CN114278653A - Connecting assembly, connecting system and mounting method - Google Patents

Abstract

The invention discloses a connecting assembly, a connecting system and an installation method, which are used for connecting a first member and a second member, wherein the connecting assembly comprises a first connecting piece, a second connecting piece and a threaded fastener; one end of the second connecting piece is provided with a connecting groove, and the other end of the second connecting piece is arranged in the first connecting channel in a penetrating way and at least one part of the connecting groove is arranged at the position where the first connecting channel is communicated with the first connecting hole; the periphery lateral wall of threaded fastener is equipped with the external screw thread structure, and threaded fastener threaded connection is in first connecting hole, and threaded fastener slides in first connecting hole so that threaded fastener's one end inserts in the connecting groove. The furniture finished product can improve the invisibility and the overall aesthetic property after being connected by the connecting component.

Description

A connection component, connection system and installation method

technical field

The invention discloses a connecting assembly, a connecting system and an installation method, which are used for connecting a first component and a second component, especially for connecting furniture components.

Background technique

At present, with the continuous improvement of people's aesthetic concepts, invisible connectors are gradually used between two furniture panels or two metal components to achieve invisible connection, thereby improving the aesthetics of furniture or equipment. Among them, four-in-one connectors are widely used. Applied to the connection between two furniture panels. As shown in Figure 1, the existing four-in-one connector is mainly composed of an expansion nut 5', a connecting rod 2', a fixing pin 3' and a threaded fastener 4'. The first end of the connecting rod 2' is provided with an external The threaded structure, the second end is provided with a locking groove 21', the circumferential side wall of the fixing pin 3' is provided with pin holes 31' penetrating the opposite sides of the fixing pin 3', and the end is provided with an internal thread communicating with the pin hole 31'. Keyhole 32'. When in use, as shown in FIGS. 2-3 , an installation channel 101 ′ is first opened on one side of the first member 10 ′, and a first installation hole 102 communicated with the installation channel 101 ′ is opened on the top of the first member 10 ′ ', the surface of the second member 20' is provided with a second installation hole 201', then insert the fixing pin 3' into the first installation hole 102' and make the pin hole 31' communicate with the installation channel 101', and the expansion nut 5' is pre-installed. Buried in the second mounting hole 201' of the second member 20', then the first end of the connecting rod 2' is rotatably inserted into the interior of the expansion nut 5' and locked with the second member 20' through the expansion nut 5' , the second end of the connecting rod 2' is inserted into the installation channel 101' and the lock groove 21' is placed inside the pin hole 31', and finally the threaded fastener 4' is inserted into the lock hole 32' and inserted into the lock hole 32' Rotate inwardly, so that one end of the threaded fastener 4' is smoothly inserted into the locking groove 21', and the second end of the connecting rod 2' is restricted from being pulled out from the installation channel 101' by the threaded fastener 4', so as to realize the first The member 10' is interconnected with the second member 20'.

Since the first member 10' and the second member 20' are connected by a four-in-one connector, they have the characteristics of firm connection, strong load bearing capacity, and easy disassembly, so they are widely used in the concealment between two furniture panels of finished furniture. form connection. However, in the prior art, in order to enable the first end of the connecting rod 2' to rotate in the expansion nut 5' to achieve a firm connection, the second end of the connecting rod 2' has a round head structure, and is in the shape of a round head. The end face is provided with a word groove, a cross groove or a hexagonal groove, and a screwdriver or a hexagonal wrench is used to turn the round head to make the first end of the connecting rod 2' rotate in the expansion nut 5'. Among them, according to the existing general usage habits, in order to ensure that the round head of the connecting rod 2' can be operated multiple times to achieve a better disassembly and assembly effect, the diameter size of the round head of the existing connecting rod 2' is designed to be larger, resulting in The diameter of the pin hole 31 ′ of the fixing pin 3 ′ is larger, so that the diameter of the fixing pin 3 ′ is larger. Usually, the diameter of the end of the fixing pin 3 ′ is more than 10 mm, which leads to the need for the first member 10 to have a larger diameter. A first installation hole 102' with a larger diameter is opened on the ', so that the user can easily observe the fixing pin 3' through the first installation hole 102' with a larger diameter, thereby causing a gap between the first member 10' and the second member 20'. The invisibility of the joint is low, which reduces the aesthetics of the finished furniture.

SUMMARY OF THE INVENTION

In order to solve the technical problem of low invisibility of the fixing pin of the four-in-one connector on the finished furniture product in the prior art, a first aspect of the present invention provides a connecting assembly, including:

A first connector, one end of the first connector is provided with a first connection channel, an outer side wall of the first connector is provided with a first connection hole communicating with the first connection channel, the first connector The outer side wall of the connecting piece is provided with at least one fastening inverse tooth;

A second connecting piece, one end of the second connecting piece is formed with a connecting groove, one end of the second connecting piece is penetrated in the first connecting channel and at least a part of the connecting groove is placed in the at the position where the first connection channel communicates with the first connection hole; and

A threaded fastener, the outer peripheral side wall of the threaded fastener is provided with an external thread structure, the threaded fastener is threaded in the first connection hole, and the threaded fastener is connected in the first connection The hole is slid so that one end of the threaded fastener is inserted into the connecting groove.

In some embodiments, one end of the threaded fastener inserted into the connection groove is sharp-shaped, and the threaded fastener is mutually threadedly connected to the inner side wall of the first connection hole through self-tapping.

In some embodiments, the inner side wall of the first connection hole is integrally formed with threaded threads, and the threaded fasteners are threadedly connected with the threaded threads so that the threaded fasteners are threadedly connected to the first connection holes. in a connecting hole.

In some embodiments, the thread teeth are made of metal.

In some embodiments, the connection assembly further includes a first metal block disposed inside the first connection hole, the first metal block is provided with a first threaded hole, and the threaded fastener passes through the connection with the first connection hole. The first threaded hole is matched with a threaded connection so that the threaded fastener is threaded into the first connection hole.

In some embodiments, the first metal block is clamped inside the first connection hole with an interference fit.

In some embodiments, the inner side wall of the first connection hole is protruded and formed with a raised portion, and the raised portion is arranged at a relatively spaced distance between the first connection channel and the first connection hole; so The first metal block is located between the protruding portion and the connection between the first connection hole and the first connection channel.

In some embodiments, an insertion hole communicated with the first connection hole is formed on the outer side wall of the first connecting member, and the first metal block is inserted into the protruding portion and the between the first connection hole and the connection between the first connection channel.

In some embodiments, the connection assembly further includes a second metal block provided at the opening of the first connection hole, and the second metal block is provided with a second threaded hole communicated with the first connection hole; The threaded fastener is threadedly connected with the second threaded hole so that the threaded fastener is threaded into the first connection hole.

In some embodiments, the first connecting member is formed with a receiving groove for receiving the second metal block along the opening periphery of the first connecting hole.

Compared with the prior art, the above-mentioned connection assembly of the first aspect of the present invention has the following beneficial effects:

In the process of connecting the first member and the second member through the connecting assembly of the present invention, an installation channel is first opened on one side of the first member and a first installation hole communicated with the installation channel is opened on the top of the first member, and A second mounting hole is formed on the surface of the second member; then insert the first connecting piece into the mounting channel and make the first connecting hole correspond to the position of the first mounting hole, so that the first connecting hole and the first mounting hole The end of the second connector that is far away from the connection groove can be locked in the second installation hole by screw connection or expansion nut; finally, the end of the second connector with the connection groove is inserted into the first connection channel and made The connecting groove is placed at the position where the first connecting channel communicates with the first connecting hole, and then the threaded fastener is driven from the first mounting hole to rotate in the first connecting hole, so that the threaded fastener is in the first connecting hole Sliding inside and inserting one end of the threaded fastener into the connecting groove, and using the threaded fastener and the connecting groove to cooperate with each other to restrict the relative separation of the first connecting piece and the second connecting piece, so that the first member and the second member are separated. firmly connected to each other.

Compared with the four-in-one connecting piece of the prior art, the connecting assembly of the present invention omits the use of fixing pins, so that the diameter of the first mounting hole can be designed according to the diameter of the threaded fastener. The diameter of the fastener is small, so that the diameter of the first installation hole is also small. By reducing the diameter of the first installation hole, the invisibility of the connecting assembly of the present invention inside the first member and the second member is improved, thereby Improve the aesthetics of finished furniture.

In addition, the threaded fastener of the present invention can also be pre-installed in the first connection hole, so that the diameter of the first installation hole can be so small that only a tool for rotating the threaded fastener can pass through; then use a screwdriver, etc. After the tool passes through the first installation hole, the threaded fastener is driven to rotate in the first connection hole. Compared with the four-in-one connection in the prior art, the fixing pin needs to be positioned in the first installation hole during assembly, and the operation is more efficient. The utility model is convenient and quick, effectively shortens the assembling time of the connecting assembly on the first component and the second component, and improves the assembling efficiency between the first component and the second component.

In order to solve the technical problem of low invisibility of the fixing pin of the four-in-one connector on the finished furniture product in the prior art, a second aspect of the present invention provides a connecting assembly, comprising:

A first connector, one end of the first connector is provided with a first connection channel, an outer side wall of the first connector is provided with a first connection hole communicating with the first connection channel, the first connector The outer side wall of the connecting piece is provided with at least one fastening inverse tooth;

a second connecting piece, one end of the second connecting piece is formed with a connecting groove;

a third connecting piece, the outer side wall of the third connecting piece is provided with a third connecting channel, one end of the third connecting piece is provided with a third connecting hole communicating with the third connecting channel, the third connecting piece Inserted into the first connection hole and communicated with the third connection channel and the first connection channel, one end of the second connection piece is inserted into the first connection channel At least a part of the connecting groove is placed at the position where the third connecting channel communicates with the third connecting hole; and

A threaded fastener, the outer peripheral side wall of the threaded fastener is provided with an external thread structure, the threaded fastener is threaded in the third connection hole, and the threaded fastener is connected in the third connection The hole is slid so that one end of the threaded fastener is inserted into the connecting groove.

In some embodiments, the outer side wall of the third connecting member has at least one positioning plane or positioning convex point or positioning groove, or, the cross section of the third connecting member is oval or waist circular;

The shape of the inner side wall of the first connecting hole and the shape of the outer side wall of the third connecting piece are matched with each other.

In some embodiments, two ends of the third connecting channel penetrate through opposite sides of the third connecting member respectively, and one end of the second connecting member passes through the third connecting channel and protrudes out outside the third connecting piece, and at least a part of the connecting groove is located at the position where the third connecting channel communicates with the third connecting hole.

Based on the connection assembly of the second aspect of the present invention, compared with the prior art, its beneficial effects are:

In the process of connecting the first member and the second member through the connecting assembly of the present invention, an installation channel is first opened on one side of the first member and a first installation hole communicated with the installation channel is opened on the top of the first member, and A second mounting hole is formed on the surface of the second member; then insert the first connecting piece into the mounting channel and make the first connecting hole correspond to the position of the first mounting hole, so that the first connecting hole and the first mounting hole The end of the second connector that is far away from the connection groove can be locked in the second installation hole by screw connection or expansion nut; finally, the end of the second connector with the connection groove is inserted into the first connection channel and made The connection groove is placed at the position where the third connection channel communicates with the third connection hole, and then the threaded fastener is driven from the first installation hole to rotate in the third connection hole, so that the threaded fastener is in the third connection hole Slide inside and insert one end of the threaded fastener into the connecting groove, and use the threaded fastener and the connecting groove to cooperate with each other to limit the relative separation of the first connecting piece and the second connecting piece, so that the first member and the second member are separated. firmly connected to each other.

Compared with the four-in-one connecting piece of the prior art, the connecting assembly of the present invention can be pre-installed in the first connecting hole and connect the third connecting channel with the first connecting channel, avoiding the need for The prior art four-in-one connector is troublesome to locate the fixing pin in the first mounting hole during assembly, and the operation is more convenient and rapid, and the assembly time of the connecting assembly on the first member and the second member is effectively shortened. At the same time, the present invention does not need to design according to the diameter of the third connector (that is, the diameter of the fixing pin in the prior art) when opening the first installation hole on the first member, and only needs to make the diameter of the first installation hole suitable for The threaded fastener can be passed through and inserted into the third connection hole, and the diameter of the first installation hole is greatly reduced to improve the invisibility of the connection assembly of the present invention inside the first member and the second member, thereby improving the finished furniture. of aesthetics.

In addition, the threaded fastener of the present invention can also be pre-installed in the third connection hole, so that the diameter of the first installation hole can be so small that only a tool for rotating the threaded fastener can pass through; then use a screwdriver, etc. After the tool passes through the first installation hole, the threaded fastener is driven to rotate in the third connection hole, and the threaded fastener needs to be inserted into the third connection hole from the outside of the first member during assembly with the four-in-one connection in the prior art. Compared with the above, the operation is more convenient and rapid, the assembling time of the connecting assembly on the first member and the second member is effectively shortened, and the assembling efficiency between the first member and the second member is improved.

Further, based on the connection assembly of the first aspect and the second aspect of the present invention,

In some embodiments, the first connecting member is a metal member or a rigid plastic member.

In some embodiments, the first connector includes a first connector body and a mounting post integrally formed with the first connector body, and the first connector body includes an opposite first connecting end and a first connecting end. an installation end, the first connection channel is located at the first connection end, and the installation column is located at the first installation end;

The first connection hole is located on the outer sidewall of the first connector body, and the outer sidewall of the first connector body and/or the outer sidewall of the mounting post is provided with the fastening indent.

In some embodiments, along the viewing direction of the first connection end toward the first installation end, the outline of the outer sidewall of the first connection member body is an axisymmetric figure and has at least two first axes of symmetry, The minimum distance between the straight line where the central axis of the mounting column is located and the intersection of the at least two first symmetry axes is greater than zero.

In some embodiments, the first connector body is cylindrical, and the central axis of the mounting column is not on the same line as the central axis of the first connector body.

In some embodiments, the outer side wall of the first connecting member includes a first side surface and a second side surface opposite to each other, the first connecting hole is opened on the first side surface, and the threaded fastener is inserted from the first side surface. The first side surface of the first connecting piece is inserted into the first connecting hole;

The distance between the central axis of the first connecting channel and the first side surface of the first connecting piece is set as L1, and the central axis of the first connecting channel and the second side of the first connecting piece are set as L1. The distance between the sides is L2; among them, L1 and L2 satisfy: L1>L2.

In some embodiments, the minimum distance between the second side surface of the first connecting piece and the inner side wall of the first connecting channel is set to be L3; wherein, L3 satisfies: 0.3mm≤L3≤6mm.

In some embodiments, the outer sidewall of the first connector body is provided with a positioning boss.

In some embodiments, a correcting inclined portion is formed at a position where the inner side wall of the connecting groove is connected with the groove bottom of the connecting groove.

In some embodiments, the second connecting member has an opposite second connecting end and a second mounting end, the connecting groove is located on the second connecting end, and the second mounting end is used for detachment connected to the second member.

In some embodiments, a concave portion is formed on the outer peripheral wall of the second connecting end, and the connecting groove is opened on the concave portion.

In some embodiments, the outer side wall of the second mounting end is formed with a first mounting external thread portion.

In some embodiments, the connection assembly further includes an expansion nut, and the second mounting end is rotatably provided inside the expansion nut for driving the outer peripheral wall of the expansion nut to expand outward, so as to make the The second installation end is connected to the second member through the expansion nut.

In some embodiments, the second connecting member is fixedly provided with an operating portion between the second connecting end and the second mounting end, and the operating portion has at least one first operating plane or a first operating hole Or the first operating convex point or the first operating groove, or, the cross-section of the operating portion is adapted to the cross-section of the sleeve.

In some embodiments, the connecting assembly further includes an expansion body, and a conical channel is formed in the interior of the expansion body;

The second mounting end is formed with a tapered portion, and the tapered portion is slidably arranged in the tapered channel; the second connecting piece is fixed between the second connecting end and the second mounting end There is a second installation external thread part, and the second installation external thread part is threadedly connected with a rotating body with an internal thread; the outer side wall of the rotating body has at least one second operation plane or second operation hole or first Two operating bumps or second operating grooves, or, the cross section of the rotating body is adapted to the cross section of the sleeve;

When the rotating body is driven to rotate by an external tool, the tapered portion slides a certain distance in the tapered channel to expand the outer peripheral wall of the expansion body outward, so that the second mounting end passes through the The expansion body is connected to the second member.

In some embodiments, the second connecting member has a hinge portion between the second connecting end and the second mounting end, and the second connecting end and the second mounting end pass through the hinge portion rotate each other.

In order to solve the technical problem that the fixing pin of the four-in-one connector in the prior art has low invisibility on the finished furniture, the third aspect of the present invention provides a connection, which includes a first component, a second component and the above-mentioned present invention. The connecting assembly according to the first aspect or the second aspect of the invention;

An installation channel for accommodating the first connector is opened on one side of the first member, and a first installation hole communicated with the first connection hole is formed on the top of the first member;

One side of the second member is provided with a second mounting hole, and one end of the second connecting piece away from the connecting groove is mounted in the second mounting hole.

In some embodiments, the installation channel includes a first-stage sub-channel and a second-stage sub-channel that communicate with each other, the cross-section of the first-stage sub-channel is an axisymmetric figure and has at least two second symmetry axes, The minimum distance between the straight line where the central axis of the second-stage sub-channel is located and the intersection of the at least two second symmetry axes is greater than zero.

In some embodiments, the cross-section of the first-stage sub-channel and the cross-section of the second-stage sub-channel are respectively circular, and the central axis of the first-stage sub-channel and the second-stage sub-channel are respectively circular. The central axes are not on the same line.

In order to solve the technical problem of low invisibility of the fixing pin of the four-in-one connector on the finished furniture product in the prior art, the fourth aspect of the present invention provides a method using the above-mentioned first or second aspect of the present invention. The installation method of the connection component includes the following steps:

A mounting channel is processed on one side of the first component, and a first mounting hole communicated with the mounting channel is processed on the top of the first component;

Install the end of the second connecting piece away from the connecting groove on one side of the second member;

Insert the first connector into the installation channel and make the first connection hole communicate with the first installation hole, and drive the threaded fastener to rotate from the first installation hole so that one end of the threaded fastener is inserted into the connection groove to restrict The second connector slides within the first connecting channel, thereby interconnecting the first member and the second member.

In some embodiments, the installation channel includes a first-stage sub-channel and a second-stage sub-channel that communicate with each other, the cross-section of the first-stage sub-channel is an axisymmetric figure and has at least two second symmetry axes, The minimum distance between the straight line where the central axis of the second-stage sub-channel is located and the intersection of the at least two second symmetry axes is greater than zero.

In some embodiments, the cross-section of the first-stage sub-channel and the cross-section of the second-stage sub-channel are respectively circular, and the central axis of the first-stage sub-channel and the second-stage sub-channel are respectively circular. The central axes are not on the same line.

In some embodiments, the threaded fastener is inserted through the first mounting hole and one end of the threaded fastener is inserted into the connection groove.

Description of drawings

1 is a schematic structural diagram of a four-in-one connector in the prior art;

Fig. 2 is the disassembly schematic diagram of the four-in-one connector, the first member and the second member in the prior art;

3 is a cross-sectional view of the first component and the second component connected by a four-in-one connector in the prior art;

Fig. 4 is the first connection schematic diagram of the connection assembly of Embodiment 1 of the present invention;

Fig. 5 is the exploded view of Fig. 4;

Fig. 6 is the sectional view of Fig. 4, in the figure, the threaded fastener is not inserted into the connecting groove;

Fig. 7 is the sectional view of Fig. 4, in the figure the threaded fastener is inserted into the connecting groove;

Fig. 8 is the second disassembled schematic diagram of the connecting assembly of Embodiment 1 of the present invention;

Fig. 9 is the sectional view of Fig. 8 in the connected state, in which the threaded fastener is inserted into the connecting groove;

Fig. 10 is the third disassembly schematic diagram of the connecting assembly of the embodiment 1 of the present invention;

Figure 11 is a schematic view of Figure 10 from another perspective;

Fig. 12 is a sectional view of Fig. 10 in the connected state, in which the threaded fastener is not inserted into the connecting groove;

Fig. 13 is a sectional view of Fig. 10 in the connected state, in which the threaded fastener is inserted into the connecting groove;

Fig. 14 is the fourth disassembled schematic diagram of the connecting assembly of Embodiment 1 of the present invention;

Fig. 15 is a sectional view of Fig. 14 in the connected state, in which the threaded fastener is not inserted into the connecting groove;

Fig. 16 is a sectional view of Fig. 14 in the connected state, in which the threaded fastener is inserted into the connecting groove;

17 is a schematic diagram of the fifth connection of the connection assembly of Embodiment 1 of the present invention;

Fig. 18 is the disassembled schematic diagram of Fig. 17;

Fig. 19 is a cross-sectional view of Fig. 17, in which the threaded fastener is inserted into the connecting groove;

Fig. 20 is the sixth kind of disassembly schematic diagram of the connecting assembly of Embodiment 1 of the present invention;

Fig. 21 is the seventh disassembled schematic diagram of the connecting assembly of Embodiment 1 of the present invention;

Figure 22 is a cross-sectional view of Figure 21 in the connected state, in which the threaded fastener is inserted into the connection groove;

Fig. 23 is the eighth kind of disassembly schematic diagram of the connecting assembly of the embodiment 1 of the present invention;

Figure 24 is a cross-sectional view of Figure 23 in the connected state, in which the threaded fastener is inserted into the connection groove;

25 is a schematic diagram of a ninth connection of the connection assembly according to Embodiment 1 of the present invention;

Figure 26 is the split schematic diagram of Figure 25;

Fig. 27 is a cross-sectional view of Fig. 25, in which the threaded fastener is inserted into the connecting groove;

Fig. 28 is a tenth connection schematic diagram of the connection assembly of Embodiment 1 of the present invention;

Fig. 29 is the disassembled schematic diagram of Fig. 28;

Figure 30 is a cross-sectional view of Figure 28, in which the threaded fastener is not inserted into the connecting groove;

Fig. 31 is the sectional view of Fig. 28, in which the threaded fastener is inserted into the connecting groove;

Fig. 32 is the eleventh connection schematic diagram of the connection assembly of Embodiment 1 of the present invention;

FIG. 33 is a first structural schematic diagram of the first connector according to Embodiment 1 of the present invention;

Figure 34 is a half cross-sectional view of Figure 33;

Figure 35 is a rear view of Figure 33;

Figure 36 is a front view of Figure 33;

37 is a schematic diagram of the second structure of the first connector according to Embodiment 1 of the present invention;

Figure 38 is a rear view of Figure 37;

Figure 39 is a front view of Figure 37;

FIG. 40 is a third structural schematic diagram of the first connector according to Embodiment 1 of the present invention;

41 is a schematic diagram of the fourth structure of the first connector in Embodiment 1 of the present invention;

FIG. 42 is a schematic diagram of the first structure of the second connector according to Embodiment 1 of the present invention;

Figure 43 is a half-section view of Figure 42;

FIG. 44 is a schematic diagram of the second structure of the second connector according to Embodiment 1 of the present invention;

45 is a schematic diagram of the third structure of the second connector according to Embodiment 1 of the present invention;

FIG. 46 is a schematic diagram of the fourth structure of the second connector according to Embodiment 1 of the present invention;

47 is a schematic diagram of the fifth structure of the second connector according to Embodiment 1 of the present invention;

FIG. 48 is a schematic diagram of the sixth structure of the second connector according to Embodiment 1 of the present invention;

FIG. 49 is a seventh structural schematic diagram of the second connector according to Embodiment 1 of the present invention;

50 is a schematic diagram of the eighth structure of the second connector according to Embodiment 1 of the present invention;

FIG. 51 is a ninth structural schematic diagram of the second connector according to Embodiment 1 of the present invention;

FIG. 52 is a tenth structural schematic diagram of the second connector according to Embodiment 1 of the present invention;

FIG. 53 is an eleventh structural schematic diagram of the second connector according to Embodiment 1 of the present invention;

Fig. 54 is the twelfth structural schematic diagram of the second connector of Embodiment 1 of the present invention;

55 is a schematic structural diagram of the second connector and the expansion nut according to Embodiment 1 of the present invention;

56 is a schematic diagram of the connection of the second connector, the expansion body and the rotating body according to Embodiment 1 of the present invention;

Figure 57 is the split schematic diagram of Figure 56;

Fig. 58 is the half-section schematic diagram of Fig. 56;

Figure 59 is a schematic structural diagram of the first member of Embodiment 1 of the present invention;

Figure 60 is a cross-sectional view along A-A in Figure 59;

Figure 61 is a schematic view of the disassembly of the first connector and the first member in Embodiment 1 of the present invention;

Figure 62 is a schematic diagram of the connection of the first connector in Figure 61 installed on the first member;

Figure 63 is a sectional view taken along B-B in Figure 62;

Fig. 64 is the first disassembly schematic diagram of the connection system of Embodiment 1 of the present invention;

Figure 65 is a cross-sectional view of Figure 64 in a connected state;

Figure 66 is a schematic view of the disassembly of the first connector and the third connector according to Embodiment 2 of the present invention;

67 is a cross-sectional view of the third connector pre-installed inside the first connector according to Embodiment 2 of the present invention;

Fig. 68 is the first disassembled schematic diagram of the connecting assembly of Embodiment 2 of the present invention;

Figure 69 is a cross-sectional view of Figure 68 in a connected state;

Fig. 70 is the second disassembled schematic diagram of the connecting assembly of Embodiment 2 of the present invention;

Figure 71 is a cross-sectional view of Figure 70 in a connected state;

Fig. 72 is the third disassembly schematic diagram of the connecting assembly of the second embodiment of the present invention;

Figure 73 is a sectional view of Figure 72 in a connected state;

Fig. 74 is the fourth disassembled schematic diagram of the connecting assembly of Embodiment 2 of the present invention;

FIG. 75 is a schematic diagram of the first structure of the third connector according to Embodiment 2 of the present invention;

FIG. 76 is a schematic structural diagram of FIG. 75 from another perspective;

FIG. 77 is a schematic diagram of the second structure of the third connector according to Embodiment 2 of the present invention;

FIG. 78 is a schematic diagram of the third structure of the third connector according to Embodiment 2 of the present invention;

FIG. 79 is a schematic diagram of the fourth structure of the third connector according to Embodiment 2 of the present invention;

FIG. 80 is a fifth structural schematic diagram of the third connector according to Embodiment 2 of the present invention;

FIG. 81 is a schematic diagram of the sixth structure of the third connector according to Embodiment 2 of the present invention;

Figure 82 is a schematic structural diagram of the third connector according to Embodiment 2 of the present invention being pre-installed inside the first connector and then installed on the first member;

Figure 83 is a sectional view taken along C-C in Figure 82;

Figure 84 is a schematic view of the disassembly of the connection system of Embodiment 2 of the present invention;

Figure 85 is a cross-sectional view of Figure 84 in a connected state;

FIG. 86 is a schematic diagram of the first structure of the second connector according to Embodiment 3 of the present invention;

Fig. 87 is the disassembled schematic diagram of Fig. 86;

FIG. 88 is a schematic diagram of the second structure of the second connector according to Embodiment 3 of the present invention;

FIG. 89 is a third structural schematic diagram of the second connector according to Embodiment 3 of the present invention;

Figure 90 is the split schematic diagram of Figure 89;

Figure 91 is a schematic diagram of the connection between the first member and the second member in Embodiment 3 of the present invention;

FIG. 92 is a schematic structural diagram of the first connector according to Embodiment 3 of the present invention;

Fig. 93 is a kind of disassembled schematic diagram of the connection system of Embodiment 3 of the present invention;

Figure 94 is a cross-sectional view of Figure 93 in a connected state;

Fig. 95 is another disassembly schematic diagram of the connection system of Embodiment 3 of the present invention;

FIG. 96 is a cross-sectional view of FIG. 95 in the connected state.

Detailed ways

The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and embodiments. The following examples are intended to illustrate the present invention, but not to limit the scope of the present invention.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", " Rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc. The relationship is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore It should not be construed as a limitation of the present invention.

In addition, the terms "first" and "second" are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, a feature defined as "first" or "second" may expressly or implicitly include one or more of that feature. In the description of the present invention, "plurality" means two or more, unless otherwise expressly and specifically defined.

In the present invention, unless otherwise expressly specified and limited, the terms "installed", "connected", "connected", "fixed" and other terms should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection , or integrated; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of the two elements or the interaction relationship between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

In the present invention, unless otherwise expressly specified and limited, a first feature "on" or "under" a second feature may include the first and second features in direct contact, or may include the first and second features Not directly but through additional features between them. Also, the first feature being "above", "over" and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is level higher than the second feature. The first feature is "below", "below" and "below" the second feature includes the first feature being directly below and diagonally below the second feature, or simply means that the first feature has a lower level than the second feature.

As shown in Figures 1-3, in the prior art, the four-in-one connector is composed of an expansion nut 5', a connecting rod 2', a fixing pin 3' and a threaded fastener 4', and is mainly used to realize two furniture pieces. Invisible connections between panels. Wherein, in the embodiment of the present invention, one furniture panel is set as the first member 10', and the other furniture panel is set as the second member 20', and the shape or material of the first member 10' and the second member 20' may be the same, It can also be different, the shape is for example a plate-like body, a block-like body or a column-like body, etc., and the material can be wood, plastic, metal, or polymer composite material, etc. or a combination thereof, which is not limited here.

Further, the specific structure of the existing four-in-one connector will be described in detail below. The expansion nut 5' has a certain elastic deformation ability, the interior of the expansion nut 5' has an internal thread structure, and the outer side wall is provided with a protrusion. The first end of the connecting rod 2' is provided with an external thread structure that is internally matched with the expansion nut 5', and the second end of the connecting rod 2' is provided with a locking groove 21'. The fixing pin 3' is, for example, in the shape of a cylinder, the circumferential side wall of the fixing pin 3' is provided with pin holes 31' penetrating the opposite sides of the fixing pin 3', and one end of the fixing pin 3' is provided with a connection with the pin hole 31'. Internally threaded lock hole 32'. The outer peripheral side wall of the threaded fastener 4' is provided with an external thread structure, and the threaded fastener 4' is, for example, a screw or a bolt, so that the threaded fastener 4' can cooperate and rotate in the locking hole 32'.

When the first member 10' and the second member 20' are connected to each other using the four-in-one connector in the prior art, a mounting channel 101' and a mounting channel 101' and The top (or bottom) is provided with a first mounting hole 102' communicating with the mounting channel 101', a second mounting hole 201' is provided on the surface of the second member 20', and then the fixing pin 3' is inserted into the first mounting hole 102' inside and make the pin hole 31' communicate with the installation channel 101', the expansion nut 5' is pre-embedded in the second installation hole 201' of the second member 20' with a clearance fit, and then the first end of the connecting rod 2' is rotatably Inserted into the expansion nut 5' and locked with the second member 20' through the expansion nut 5', the second end of the connecting rod 2' is inserted into the installation channel 101' and the locking groove 21' is placed in the pin hole 31'. Inside, finally insert the threaded fastener 4' into the lock hole 32' and rotate in the lock hole 32', so that one end of the threaded fastener 4' is smoothly inserted into the lock groove 21', and the threaded fastener 4' passes through the threaded fastener 4'. The second end of the connecting rod 2' is restricted from being pulled out from the installation channel 101', so as to realize the interconnection of the first member 10' and the second member 20'.

Wherein, in order to enable the first end of the connecting rod 2' to rotate inside the expansion nut 5', a word groove, a cross groove or a hexagonal groove (usually a cross groove is usually provided on the end face of the second end of the connecting rod 2' ), use a screwdriver to act on the cross groove to drive the connecting rod 2' to rotate, so that the first end of the connecting rod 2' rotates inside the expansion nut 5' and is firmly connected to the second member 20' through the expansion nut 5'. However, since the first end of the connecting rod 2' is inserted into the expansion nut 5' and the second end is inserted into the installation channel 101', this inevitably leads to the need for the connecting rod 2' to have a sufficient length, usually greater than 30mm, in order to achieve better The second end of the connecting rod 2' is in the shape of a round head, and the diameter of the round head is large, so that a deep cross groove can be opened on the round head to ensure that the screwdriver acts on the round head. The force of the head and the stability of driving the connecting rod 2' to rotate, and ensuring that the screwdriver can repeatedly operate the round head to realize the multiple disassembly and assembly of the connecting rod 2' on the first member 10'.

However, the round head at the second end of the connecting rod 2' will directly lead to a larger diameter of the pin hole 31', which in turn makes the diameter of the fixing pin 3' larger. This results in that the diameter of the first installation hole 102' of the first member 10' needs to be larger, and the user can easily observe the fixing pin 3' through the first installation hole 102' of the larger diameter, thereby causing the first member 10' to be connected to the first installation hole 102'. The invisibility of the joint between the two components 20' is low, which reduces the aesthetics of the finished furniture.

Example 1

Therefore, in view of the technical problem of low invisibility of the fixing pin of the four-in-one connector on the finished furniture in the prior art, as shown in FIGS. 4-65 , Embodiment 1 of the present invention provides a connecting assembly, In order to realize the invisible connection between the first member 10 and the second member 20 through the connection assembly of Embodiment 1 of the present invention, and the size of the slot opened on the first member 10 or the second member 20 is small, it is difficult for the user to connect the first member from the first member. 10 or the outside of the second member 20 view the connecting assembly, thereby enhancing the aesthetics of the finished furniture.

Specifically, as shown in FIGS. 4 to 32 , the connection assembly of Embodiment 1 of the present invention includes a first connection piece 1 , a second connection piece 2 and a threaded fastener 4 . When in use, the first connection piece 1 is installed first. On the first member 10, the second connector 2 is mounted on the second member 20, and then part of the second connector 2 is inserted into the interior of the first connector 1, and then the threaded fastener 4 is inserted into the first connector 1 and restrict the pulling out of the second connector 2 from the inside of the first connector 1, so that the first connector 1 and the second connector 2 are connected to each other, and the first member 10 and the second member 20 are firmly connected to each other. .

The specific structures of the first connecting piece 1 , the second connecting piece 2 and the threaded fastener 4 of the connecting assembly according to Embodiment 1 of the present invention and the principle of realizing mutual connection are described in detail below.

As shown in FIGS. 33 to 41 , a first connecting channel 113 is opened at one end of the first connecting piece 1 according to the first embodiment of the present invention, and a second connecting piece 113 is opened on the outer side wall of the first connecting piece 1 . A connecting hole 114 is provided on the outer side wall of the first connecting piece 1 with at least one fastening indent 13 . As shown in FIGS. 42-58 , a connecting groove 23 is formed at one end of the second connecting member 2 according to Embodiment 1 of the present invention. As shown in FIGS. 4-32 , the outer peripheral side wall of the threaded fastener 4 according to Embodiment 1 of the present invention is provided with an external thread structure, and the threaded fastener 4 is threadedly connected in the first connection hole 114 . As shown in Figures 4-32, 61-65, when in use, firstly install the first connecting piece 1 inside the first member 10, and install the end of the second connecting piece 2 away from the connecting groove 23 on the first connecting piece 1. On the second member 20, the end of the second connector 2 with the connecting groove 23 is inserted into the first connecting channel 113 and at least a part of the connecting groove 23 is placed in the first connecting channel 113 and the first connecting hole. 114 is connected to the location. While driving the threaded fastener 4 to rotate in the first connection hole 114, the threaded fastener 4 slides in the first connection hole 114, so that one end of the threaded fastener 4 can be inserted into the connection groove 23, The fastener 4 cooperates with the connecting groove 23 to restrict the end of the second connecting member 2 having the connecting groove 23 from being pulled out from the first connecting channel 113, so that the first connecting member 1 and the second connecting member 2 are mutually connected. connection, so that the first member 10 and the second member 20 are firmly connected to each other.

Wherein, Embodiment 1 of the present invention does not limit the specific shape and material of the first connector 1. For example, the first connector 1 may be cylindrical, conical, square, or trapezoidal, or the cross section may be a shaft. The symmetrical figure or the cross-section is a non-axisymmetric figure, etc. The material of the first connector 1 can be metal material or hard plastic material or wood or other materials with higher hardness, etc., and the first connector 1 has strong physical properties. Or chemical stability, stable structure and long service life. Preferably, the first connector 1 in Embodiment 1 of the present invention is preferably a metal piece or a hard plastic piece, and the metal material is stainless steel, zinc alloy or other hard alloy, etc., which has a strong load bearing capacity, and is physically and strong chemical stability. Still further preferably, the first connecting piece 1 in Embodiment 1 of the present invention is a rigid plastic piece, which can be fabricated into an integral piece through an injection molding process, thereby reducing the processing steps and improving the production efficiency.

Further, the first connector 1 of the first embodiment of the present invention is locked to the inside of the first member 10 by tightening the inverted teeth 13 , specifically as shown in FIGS. 59-60 . An installation channel 101 is opened on the upper part, and the structure and size of the installation channel 101 are compatible with the structure and size of the first connector 1. During the process of inserting the first connector 1 into the installation channel 101, the tightening inverse teeth 13 occur toward the first connector. The outer side wall of a connecting piece 1 is bent inward, and after resting, the inverse teeth 13 are fastened to form a large deformation tension on the inner side wall of the installation channel 101 , and the sliding between the first connecting piece 1 and the inner wall of the installation channel 101 is increased. The friction force makes it difficult to pull out the first connector 1 after being inserted into the installation channel 101 , so that the first connector 1 is firmly locked inside the first member 10 . At the same time, in order to enable the operator to drive the threaded fastener 4 from the outside of the first member 10 to rotate in the first connection hole 114 , the top (or bottom) of the first member 10 is provided with a first connection to the first connection hole 114 . An installation hole 102, wherein the first installation hole 102 communicates with the installation channel 101, that is, before the first connector 1 is inserted into the installation channel 101, an installation channel is opened on the side wall of the first member 10 by, for example, machining or the like 101, and a first installation hole 102 connected to the installation channel 101 is opened at the top, and then the first connector 1 is inserted into the installation channel 101 so that the position of the first connection hole 114 is aligned with the position of the first installation hole 102. connected.

In order to ensure the connection firmness of the first connector 1 on the first member 10, the fastening indent 13 of the first embodiment of the present invention and the first connector 1 are integrally formed, for example, by machining or injection molding. The outer side wall of the first connecting piece 1 is formed with a fastening indent 13 . The number of the fastening indents 13 is one or more, for example, a plurality of fastening indents 13 are arranged between the two ends of the first connector 1 at intervals. Further, in order to improve the connection stability of the first connector 1 on the first member 10 , the opposite outer side walls of the first connector 1 are provided with fastening indents 13 to enable the first connector 1 to be inserted into the first member 10 . The inner rear is fastened with the inner side walls of the installation channel 101 through the fastening inverted teeth 13 on both sides respectively, thereby improving the stability and firmness of the first connector 1 in the installation channel 101 .

Further, the threaded fastener 4 in the first embodiment of the present invention is a threaded fastener 4 in a four-in-one connector in the prior art, such as a screw or a bolt or a threaded rod, and preferably a countersunk head screw Or bolts, the material of the threaded fastener 4 can be metal or hard plastic, etc., preferably a metal material, with a greater hardness to prevent the first connector 1 from being damaged by a greater tensile force on the threaded fastener 4 , so that the end of the second connecting member 2 with the connecting groove 23 is easily pulled out from the first connecting channel 113 .

Based on the above solution, compared with the four-in-one connector of the prior art, the connection assembly of Embodiment 1 of the present invention omits the use of fixing pins, so that the diameter of the first mounting hole 102 can be adjusted according to the thread The diameter size of the fastener 4 or the diameter size of the tool for turning the threaded fastener 4 is designed accordingly. Since the diameter size of the threaded fastener 4 or the diameter size of the tool for turning the threaded fastener 4 is small, The diameter of the first installation hole 102 is also made smaller, and the invisibility of the connecting assembly of the first embodiment of the present invention in the first member 10 and the second member 20 is improved by reducing the diameter of the first installation hole 102, thereby improving the furniture. The aesthetics of the finished product. In addition, the threaded fastener 4 of the first embodiment of the present invention can also be pre-installed in the first connection hole 114, so that the diameter of the first installation hole 102 can be so small that only a tool for rotating the threaded fastener 4 can pass through Then use a tool such as a screwdriver to pass through the first installation hole 102 to drive the threaded fastener 4 to rotate in the first connection hole 114, and the four-in-one connector of the prior art needs to be assembled with the fixing pin in the first connection hole 114. Compared with positioning in a mounting hole 102 , the operation is more convenient and rapid, effectively shortening the assembly time of the connecting assembly on the first member 10 and the second member 20 , and improving the assembly efficiency between the first member 10 and the second member 20 .

In addition, after the first member 10 and the second member 20 are connected using the connection assembly of the first embodiment of the present invention, when the first member 10 and the second member 20 are separated by a tensile force, the tensile force borne by the first connector 1 mainly acts. Between the fastening indent 13 and the inner side wall of the installation channel 101, since the occlusal area between the fastening inverse 13 and the installation channel 101 is large and the occlusal effect is strong, the first connector 1 can be installed in the installation channel 101. The internal tensile load capacity is stronger. Compared with the first member 10 and the second member 20 being connected to each other by the four-in-one connector in the prior art, the tensile force between the first member 10 and the second member 20 is greatly improved. load-bearing capacity, thereby improving the connection stability between the first member 10 and the second member 20 .

Further, the threaded fastener 4 is directly threaded or indirectly connected to the first connection hole 114 to drive the threaded fastener 4 to rotate to drive the threaded fastener 4 to slide in the first connection hole 114, so that the thread One end of the fastener 4 is inserted into the connecting groove 23 . The specific content of the threaded fastener 4 being screwed into the first connection hole 114 will be described in detail below.

As shown in FIGS. 4-7 , as the first embodiment of the direct screw connection of the threaded fastener 4 with the first connection hole 114 , the end of the threaded fastener 4 inserted into the connection groove 23 is sharp, and the thread The fasteners 4 are mutually threadedly connected to the inner side wall of the first connection hole 114 through self-tapping. Specifically, at this time, the threaded fastener 4 is, for example, a screw, and the hardness of the threaded fastener 4 is greater than the hardness of the first connector 1 , for example, the threaded fastener 4 is made of iron or stainless steel or an alloy with higher hardness, etc. , the material of the first connector 1 is hard plastic or aluminum alloy or zinc alloy with lower hardness, etc., and the diameter of the outer side wall of the threaded fastener 4 is larger than the diameter of the first connecting hole 114. When the thread is tightened When the sharp end of the fastener 4 is inserted into the first connection hole 114 from the opening of the first connection hole 114, and the external force drives the threaded fastener 4 to rotate in the first connection hole 114, the external thread structure on the threaded fastener 4 In the self-tapping type, an internal thread structure is formed on the inner side wall of the first connection hole 114, and at the same time, the threaded fastener 4 and the inner side wall of the first connection hole 114 are engaged with each other, and the sharp end of the threaded fastener 4 is used to better The external thread on the threaded fastener 4 forms an internal thread structure on the inner side wall of the first connection hole 114 . When at least a part of the sharp end of the threaded fastener 4 is inserted into the connection groove 23, the outer thread of the threaded fastener 4 is relatively fastened with the inner thread of the first connection hole 114, so that the threaded fastener 4 is in the first connection hole 114. The connection hole 114 is in a static state, and the second connection member 2 is inserted into the threaded fastener 4 through the connection groove 23 to restrict the end of the second connection member 2 with the connection groove 23 from entering the first connection channel 113. Pull out, so that the first member 10 and the second member 20 are firmly connected to each other.

As a second embodiment in which the threaded fastener 4 is directly threadedly connected with the first connection hole 114, the inner side wall of the first connection hole 114 is integrally formed with threaded teeth, and the threaded fastener 4 is threadedly connected with the threaded teeth to make The threaded fastener 4 is screwed into the first connection hole 114 . At this time, the threaded fastener 4 is, for example, a screw, a bolt or a threaded rod, and the threaded fastener 4 is driven to engage with the threaded teeth on the inner side wall of the first connection hole 114, so that the threaded fastener 4 is in the first connection hole. 114 is rotated while sliding, so that one end of the threaded fastener 4 can be inserted into the connecting groove 23 . When one end of the threaded fastener 4 is inserted into the connection groove 23, since the external thread of the threaded fastener 4 is relatively clenched against the threaded teeth, the threaded fastener 4 is in a stationary state in the first connection hole 114, and the first The two connecting pieces 2 are inserted into each other through the connecting groove 23 and the threaded fastener 4 to restrict the end of the second connecting piece 2 having the connecting groove 23 from being pulled out from the first connecting channel 113 , so that the first member 10 is The second member 20 is firmly connected to each other.

Further, the thread teeth of Example 1 of the present invention are made of metal. For example, when the first connecting member 1 is made of metal material, the threaded teeth in the first connecting hole 114 may be formed on the inner side wall of the first connecting hole 114 by tapping a tap. For another example, when the first connector 1 is made of a hard plastic material, a metal thread can be integrally formed in the first connection hole 114 through an injection molding process, and the thread and the first connector 1 become one piece, and the overall structure is More solid and reliable. The threaded teeth made of such metal can increase the clenching force with the external thread of the threaded fastener 4 (the threaded fastener 4 is usually made of metal), and improve the threaded fastener 4 in the first connection hole 114. In addition, the threaded fasteners 4 are prevented from being worn out due to repeated disassembly and assembly of the threaded fasteners 4 .

As the first embodiment of the indirect threaded connection between the threaded fastener 4 and the first connection hole 114 , as shown in FIGS. The first metal block 8, the first metal block 8 is provided with a first threaded hole 81, and the threaded fastener 4 is threadedly connected with the first threaded hole 81 so that the threaded fastener 4 is threaded in the first connection hole 114. . Wherein, for example, a tap is used to form the first threaded hole 81 on the first metal block 8 by tapping, so that the inner wall of the first threaded hole 81 has an internal thread structure that is threadedly connected with the threaded fastener 4 . It should be noted that Embodiment 1 of the present invention does not limit the shape and thickness of the first metal block 8 , for example, the cross-sectional shape of the first metal block 8 is the same or different from the cross-sectional shape of the first connection hole 114 , as long as The first metal block 8 can be placed in the first connection hole 114 . For another example, the thickness dimension of the first metal block 8 is small, so that the first metal block 8 is in the shape of a sheet, or the first metal block 8 is in the shape of a flat plate or an arc plate, and the inner side wall of the first threaded hole 81 can be formed with The internal thread structure of two or more turns is sufficient.

Further, in order for the threaded fastener 4 to be firmly and stably placed in the first connection hole 114 , the first metal block 8 needs to be firmly placed in the first connection hole 114 . In some embodiments, the first metal block 8 is clamped inside the first connection hole 114 with an interference fit. Specifically, the cross-sectional area of the first metal block 8 is larger than the cross-sectional area of the first connection hole 114 , so that the After the first metal block 8 is inserted into the first connection hole 114 under the action of external force, there is a large frictional force between the outer side wall of the first metal block 8 and the inner side wall of the first connection hole 114 to achieve mutual abutment, thereby The first metal block 8 in the static state is restricted from being pulled out or falling off directly from the first connection hole 114 . When the threaded fastener 4 is screwed into the first threaded hole 81, the threaded fastener 4 is driven to rotate to make the threaded fastener 4 slide in the first connection hole 114, so that one end of the threaded fastener 4 is inserted into the connection In the groove 23, the second connecting member 2 is inserted into the threaded fastener 4 through the connecting groove 23 to restrict the end of the second connecting member 2 having the connecting groove 23 from being pulled out from the first connecting channel 113. Thus, the first member 10 and the second member 20 are firmly connected to each other.

In other embodiments, as shown in FIGS. 8-13 , the inner sidewall of the first connection hole 114 is protruded and formed with a raised portion 114a, and the raised portion 114a is relatively spaced between the first connection channel 113 and the first connection hole 114 ; the first metal block 8 is located between the raised portion 114a and the first connecting hole 114 and the first connecting channel 113 . The protruding portion 114a may be a bump structure, the number of the bumps is at least two, and the at least two bumps are respectively disposed on the inner sidewall of the first connection hole 114 at intervals. The raised portion 114a may also be an annular enclosure provided along the circumferential direction of the first connecting hole 114, wherein the thickness of the annular enclosure may be smaller to divide the first connecting hole 114 into upper and lower parts; The thickness dimension is relatively large, and the thickness of the annular enclosure extends along the axial direction of the first connecting hole 114 , so that the first connecting hole 114 is in the shape of a stepped hole. When the threaded fastener 4 is screwed into the first threaded hole 81 , the threaded fastener 4 is driven to rotate so that the threaded fastener 4 slides in the first connection hole 114 , and the first metal block 8 is fastened relative to the thread. The member 4 slides in the reverse direction, because the protrusion 114a abuts against the first metal block 8 to limit the sliding of the first metal block 8 in the direction away from the connection between the first connection hole 114 and the first connection channel 113, so that the One end of the threaded fastener 4 is smoothly inserted into the connecting groove 23, and the second connecting member 2 is inserted into the threaded fastener 4 through the connecting groove 23 to restrict the end of the second connecting member 2 with the connecting groove 23. Pull out from the first connecting channel 113 , so that the first member 10 and the second member 20 are firmly connected to each other.

Further, in some embodiments, as shown in FIGS. 10-11 , when the first connection hole 114 is a through-hole structure, that is, two ends of the first connection hole 114 respectively penetrate through two opposite sides of the first connection member 1 . On the outer side wall, the first metal block 8 can be inserted from the end opening of the first connection hole 114 close to the first connection channel 113 between the raised portion 114a and the connection between the first connection hole 114 and the first connection channel 113 , The threaded fastener 4 is inserted from the other end opening of the first connection hole 114 and is threadedly connected with the first threaded hole 81 . In other embodiments, as shown in FIG. 8 , when the first connection hole 114 is a blind hole or a through-hole structure, the outer side wall of the first connection member 1 is provided with an insertion hole 119 that communicates with the first connection hole 114 , The first metal block 8 is inserted between the protruding portion 114 a and the connection between the first connection hole 114 and the first connection channel 113 through the insertion hole 119 . It can be understood that one end of the insertion hole 119 penetrates between the convex part 114a and the connection between the first connection hole 114 and the first connection channel 113 , so that the first metal block 8 can be inserted into the convex part 114a through the insertion hole 119 The axial direction of the first threaded hole 81 is the same as the axial direction of the first connecting hole 114 between the communication point with the first connecting hole 114 and the first connecting channel 113 .

In other embodiments, when the first connecting member 1 is made of hard plastic material, the first metal block 8 can be integrally formed inside the first connecting member 1 through an injection molding process.

As a second embodiment of the indirect threaded connection between the threaded fastener 4 and the first connection hole 114 , as shown in FIGS. 14 to 20 , the connection assembly of Embodiment 1 of the present invention further includes a The second metal block 9 is provided with a second threaded hole 91 communicating with the first connecting hole 114 ; the threaded fastener 4 is threadedly connected with the second threaded hole 91 to make the threaded fastener 4 It is screwed into the first connection hole 114 . Wherein, for example, a tap is used to form the second threaded hole 91 on the second metal block 9 by tapping, so that the inner wall of the second threaded hole 91 has an internal thread structure that is threadedly connected with the threaded fastener 4 . It should be noted that Embodiment 1 of the present invention does not limit the shape and thickness of the second metal block 9. For example, the cross-sectional shape of the second metal block 9 is the same or different from the cross-sectional shape of the first connection hole 114, only the At least a part of the second metal block 9 needs to cover the opening of the first connection hole 114 and make the second screw hole 91 communicate with the first connection hole 114 . For example, the second metal block 9 is in the shape of a flat plate or a curved plate.

In some embodiments, the second metal block 9 is relatively separated from the outer side wall of the first connector 1, so that when the threaded fastener 4 rotates in the second threaded hole 91, the second metal block 9 is fastened along the thread The member 4 slides in the opposite direction of the sliding direction, so that the second metal block 9 is pressed against the inner side wall of the installation channel 101 . Further, as shown in FIGS. 14-19 , in order to avoid displacement of the second metal block 9 when the first connecting piece 1 is inserted into the installation channel 101 , the first connecting piece 1 is formed along the outer periphery of the opening of the first connecting hole 114 to accommodate the second metal block 9 . The accommodating groove 110 of the second metal block 9, the second metal block 9 is all placed in the accommodating groove 110 so that the surface of the second metal block 9 is flush with the outer side wall of the first connector 1 to ensure that the first connector 1 is inserted No displacement occurs when the channel 101 is installed. For example, as shown in FIGS. 17-19 , the second metal block 9 is flat and can be fully accommodated in the accommodating groove 110 , and the side wall of the accommodating groove 110 may be provided with a buckle to fix the second metal block 9 in the accommodating groove within 110. For another example, as shown in FIGS. 14-16 , the second metal block 9 is in the shape of an arc-shaped plate. When the second metal block 9 is set in the receiving groove 110 , the arc-shaped outer surface of the second metal block 9 is connected to the first connecting piece. The curved outer surface of 1 is smoothly connected to make the overall aesthetics better.

In other embodiments, as shown in FIG. 20 , the second metal block 9 and the outer side wall of the first connecting piece 1 can be fixedly connected by means of gluing or the like, so that the first connecting piece 1 can be inserted into the installation channel 101 easily. The two metal blocks 9 will not be displaced.

In some embodiments, as shown in FIGS. 33 to 41 , the first connector 1 of Embodiment 1 of the present invention includes a first connector body 11 and a mounting post 12 integrally formed with the first connector body 11 . The connector body 11 includes a first connection end 111 and a first installation end 112 opposite to each other, the first connection channel 113 is located at the first connection end 111 , the installation post 12 is located at the first installation end 112 ; the first connection hole 114 is located at the first connection end 112 . The outer side wall of the connector main body 11 , the outer side wall of the first connector body 11 and/or the outer side wall of the mounting post 12 are provided with fastening back teeth 13 . When the first connector 1 is a rigid plastic component, the first connector body 11 and the mounting post 12 are formed into an integrated structure through an injection molding process. The cross-sections of the first connector body 11 and the mounting post 12 may be circular or oval, waist circular, square or other irregular shapes, respectively, which are not limited here. The number of mounting posts 12 may be one or more.

Further, in order to reduce the overall material and weight of the first connector 1 , the number of mounting posts 12 is preferably one, and the cross-sectional area of the mounting post 12 is smaller than the cross-sectional area of the first connector body 11 , and the mounting post 12 is integrally formed. on the end surface of the first mounting end 112 . At this time, the structure of the installation channel 101 should be relatively matched with the structure of the first connector 1 , as shown in FIGS. 59-63 , that is, the installation channel 101 includes two-stage sub-channels, and specifically includes a pair of sub-channels that are relatively matched with the main body 11 of the first connector. The first-stage sub-channel 101a, and the second-stage sub-channel 101b matched with the mounting post 12, so that the first connector 1 is fitted in the mounting channel 101 to reduce the friction of the first connector 1 in the mounting channel 101. The gap increases the contact friction between the first connector 1 and the inner side wall of the installation channel 101 , thereby improving the connection firmness of the first connector 1 on the first member 10 . The two-stage sub-channel processing method of the installation channel 101 can be as follows: firstly, a drill bit (such as a six-sided drill) is used to drill into the side wall of the first member 10 and then slide to form a first-stage sub-channel 101a, and then control the drill bit to move to the first stage. The position corresponding to the second-stage sub-channel 101b is then screwed down to form the second-stage sub-channel 101b. Finally, the drill bit is controlled to move out of the second-stage sub-channel 101b and the first-stage sub-channel 101a in sequence. A mounting channel 101 of two-stage sub-channels is machined on the side wall of the device.

It can be further understood that, as shown in FIG. 37, the fastening inverse teeth 13 can be located on the outer side wall of the first connector main body 11. At this time, the outer side wall of the mounting column 12 is a smooth structure, and the mounting column 12 serves the purpose of positioning. It is used to distinguish the position of the first connecting hole 114 of the first connecting piece 1 . Alternatively, as shown in FIGS. 40-41 , the fastening back teeth 13 are located on the outer side wall of the mounting post 12 , and the outer side wall of the first connector body 11 is a smooth structure, and the first connector 1 is in the mounting channel 101 . The locking effect relies on the frictional force between the fastening indents 13 of the mounting posts 12 and the inner side walls of the second-stage sub-channels 101b. Or as shown in FIG. 33 , the outer side wall of the first connector main body 11 and the outer side wall of the installation column 12 are respectively provided with fastening inverted teeth 13, and the locking effect of the first connector 1 in the installation channel 101 is respectively Relying on the friction between the fastening back teeth 13 of the first connector main body 11 and the inner wall of the first stage sub-channel 101a, the fastening back teeth 13 of the mounting post 12 and the inner wall of the second stage sub-channel 101b, the The frictional force between the entire body of a connector 1 and the inner side wall of the installation channel 101 is relatively large, and a relatively large external force is required to pull out the first connector 1 from the installation channel 101 , which is laborious to remove.

Further, in some embodiments, as shown in FIGS. 35 and 38 , along the viewing direction from the first connecting end 111 to the first mounting end 112 , the outline of the outer side wall of the first connecting piece body 11 is an axisymmetric figure And there are at least two first symmetry axes 117, that is, the outline of the outer side wall of the first connector body 11 is, for example, a circle or an ellipse, a waist circle, a diamond or a square, etc. Correspondingly, the The cross section is adapted to be an axisymmetric figure with at least two axes of symmetry. After the first connector 1 is inserted into the installation channel 101, in order to ensure that the first connecting hole 114 of the The positions of the mounting holes 102 correspond to and communicate with each other, so as to avoid the need for disassembly and reassembly after the reverse assembly of the first connector 1, the minimum distance between the straight line where the central axis of the mounting column 12 is located and the intersection of at least two first symmetry axes 117 Greater than zero, that is, the straight line where the central axis of the mounting post 12 is located does not pass through the intersection of at least two first symmetry axes 117 , so that the mounting post 12 is eccentrically disposed on the first mounting end 112 .

For example, the first connector body 11 is cylindrical, and the central axis of the mounting post 12 and the central axis of the first connector body 11 are not on the same straight line. Correspondingly, the central axis of the second-stage sub-channel 101b and the central axis of the first-stage sub-channel 101a are not on the same line, and at this time, the second-stage sub-channel 101b is eccentric relative to the first-stage sub-channel 101a. When the first connector 1 is inserted into the installation channel 101, due to the eccentricity of the installation column 12 relative to the first connector main body 11 and the eccentricity of the second stage subchannel 101b relative to the first stage subchannel 101a, the operator needs to rotate the A connector body 11 adjusts the angle of the first connector body 11 in the first-stage sub-channel 101a so that the mounting post 12 can be smoothly inserted into the second-stage sub-channel 101b, so that the mounting post 12 is relatively opposite to the first connector body 11 The eccentricity of the first connection hole 114 and the first installation hole 102 can be achieved to achieve the purpose of positioning the first connection hole 114 and the first installation hole 102 to ensure that the first connection hole 114 and the first installation hole 102 correspond to and communicate with each other after the first connection member 1 is inserted into the installation channel 101 . In this case, the two-stage sub-channel processing method of the installation channel 101 can be as follows: first, a drill bit with a diameter adapted to the first-stage sub-channel 101a is used to drill into the side wall of the first member 10 and then slide to form a first-stage sub-channel 101a. After the stage sub-channel 101a, the drill bit is moved out of the first member 10; then the drill bit is moved to the position corresponding to the second-stage sub-channel 101b and screwed down to form the second-stage sub-channel 101b, and then the drill bit is moved out of the first member 10, So far, an eccentric mounting channel 101 is processed on the side wall of the first member 10 .

Further, in some embodiments, as shown in FIGS. 62-63 , the threaded fastener 4 may be pre-installed in the first connection hole 114 and installed on the first member 10 along with the first connection member 1 , but Since the thickness of the existing furniture panel is about 16mm or 18mm, correspondingly, in order to ensure the strong installation stability of the first connector 1, the thickness of the first connector 1 is usually within 14mm or 16mm. Therefore, As shown in FIGS. 34 , 36 and 39 , in order to ensure that the threaded fastener 4 can be smoothly pre-installed in the first connecting hole 114 of the first connecting piece 1 , the outer side of the first connecting piece 1 in Embodiment 1 of the present invention is The wall includes opposite first side surfaces 115 and second side surfaces 116 , a first connection hole 114 is opened on the first side surface 115 , and the threaded fastener 4 is inserted into the first connection hole from the first side surface 115 of the first connector 1 114; set the distance between the central axis of the first connecting channel 113 and the first side surface 115 of the first connecting piece 1 as L1, set the central axis of the first connecting channel 113 and the second connecting piece 1 The distance between the side surfaces 116 is L2; wherein, L1 and L2 satisfy: L1>L2. It can be understood that the first connecting channel 113 is disposed close to the second side surface 116 of the first connecting piece 1, so that the first connecting channel 113 is eccentrically located on the first connecting end 111, so that the threaded fastener 4 can The side surface 115 is inserted into the first connection hole 114 and completely placed in the first connection hole 114 , and one end of the threaded fastener 4 is not at the position where the first connection hole 114 communicates with the first connection channel 113 at this time. , and then the threaded fastener 4 can be inserted into the installation channel 101 together with the first connector 1 . After the connecting groove 23 passes through the first connecting channel 113 and is placed at the position where the first connecting hole 114 communicates with the first connecting channel 113 , a tool is used to drive the screw from the first mounting hole 102 of the first member 10 to fasten the thread. The member 4 is rotated in the first connecting hole 114 so that one end of the threaded fastener 4 is inserted into the connecting groove 23, so that the first connecting member 1 and the second connecting member 2 are connected to each other, and the first member 10 and the second connecting member 2 are connected to each other. The two members 20 are connected to each other.

Further, as shown in FIG. 34 , when the first connection channel 113 is disposed close to the second side surface 116 of the first connection piece 1 , the second side surface 116 of the first connection piece 1 and the inner side wall of the first connection channel 113 are set. The minimum distance between them is L3; where L3 satisfies: 0.3mm≤L3≤6mm, for example, L3 is 0.3mm, 0.6mm, 0.8mm, 1.0mm, 2.3mm, 3.0mm, 3.5mm, 5.0mm or 6.0mm, etc. , such a design can ensure that the distance between the central axis of the first connecting channel 113 and the first side surface 115 of the first connecting member 1 is relatively large, and there is sufficient space for pre-installing the threaded fastener 4 .

In some embodiments, please refer to FIG. 41 , the outer sidewall of the first connector body 11 is provided with a positioning boss 118 . It should be noted that the number of positioning bosses 118 in Embodiment 1 of the present invention may be one or more, for example, two positioning bosses 118 are provided on the same side of the first connector body 11 . Preferably, the number of the positioning bosses 118 is one, and the positioning bosses 118 are integrally formed on the outer side wall of the first connector body 11 . The cross-section of the positioning boss 118 in Embodiment 1 of the present invention may be an arc shape, a square shape, a triangular shape, or the like, which is not limited here. When the positioning boss 118 interferes with the opening of the first connecting hole 114, the positioning boss 118 is provided with a through hole communicating with the first connecting hole 114, so that the threaded fastener 4 passes through the through hole and is placed in the first connection inside hole 114 . Correspondingly, the structure of the first-stage sub-channel 101a of the installation channel 101 is adapted to the first connecting piece 1 having the positioning boss 118 , that is, the inner side wall of the first-stage sub-channel 101a is formed with a space for accommodating the positioning boss 118 . With the groove structure, when the first connector 1 is inserted into the installation channel 101, the first connector 1 can be smoothly inserted into the installation channel 101 only by aligning the positioning boss 118 with the groove on the inner side wall of the first-stage sub-channel 101a. , when the first connector 1 is completely placed in the installation channel 101, the position of the first connection hole 114 corresponds to the position of the first installation hole 102 and communicates with each other, and the positioning boss 118 plays the role of the first connection hole 114 and the first connection hole 114. The purpose of positioning the mounting holes 102 with each other. In addition, the technical solution of providing the positioning bosses 118 on the outer side wall of the first connector body 11 in the first embodiment of the present invention and the above-mentioned technical solution of eccentrically arranging the mounting post 12 relative to the first connector body 11 can coexist.

Further, Embodiment 1 of the present invention does not limit the specific shape or material of the second connecting member 2, for example, the second connecting member 2 may be a cylindrical structure, a square cylindrical structure or a cone structure. The second connecting member 2 can be made of metal material or hard material, etc., preferably metal material, and has strong tensile force bearing capacity and gravity bearing capacity. In some embodiments, as shown in FIGS. 42 to 58 , the structure of the second connector 2 in Example 1 of the present invention is similar to the structure of the connecting rod of the four-in-one connector in the prior art, that is, the second connector 2 The second connecting end 21 and the second mounting end 22 are opposite to each other, the connecting groove 23 is located on the second connecting end 21 , and the second mounting end 22 is used for detachably connecting to the second member 20 . Wherein, in order to avoid the need to adjust the position of the connection groove 23 after the second installation end 22 is installed on the second member 20 , the connection groove 23 in Embodiment 1 of the present invention is an annular shape arranged along the circumference of the outer peripheral wall of the second connection end 21 . The groove is used to avoid the trouble of positioning the connecting groove 23 at the position where the first connecting hole 114 communicates with the first connecting channel 113 , thereby improving the assembly efficiency.

The connection between the second installation end 22 of the second connector 2 and the second member 20 will be described in detail below.

As a first detachable connection method between the second installation end 22 of the second connector 2 and the second member 20 , as shown in FIGS. 42-54 , the outer side wall of the second installation end 22 is formed with a first installation external thread Section 221. When in use, a second installation hole 201 is first opened on the surface of the second member 20, the diameter of the second installation hole 201 is smaller than the diameter of the outer contour of the first installation external thread portion 221, and the second installation end 22 is inserted into the second installation The first mounting external thread portion 221 is self-tapping into the second mounting hole 201 and rotates in the hole 201, so that the inner wall of the second mounting hole 201 is formed with an internal thread structure. The internal threads in the two mounting holes 201 are fastened to each other so that one end of the second connector 2 is firmly connected to the second member 20 . Wherein, the end of the second installation end 22 is sharp, so that the second installation end 22 can be more easily self-tapping connected to the second installation hole 201 .

As a second detachable connection method between the second installation end 22 of the second connector 2 and the second member 20, as shown in FIG. The connection assembly of the first embodiment of the present invention further includes an expansion nut 5, and the structure of the expansion nut 5 is exactly the same as that of the expansion nut 5 of the four-in-one connector in the prior art, and the structure of the expansion nut 5 is omitted here. The second installation end 22 is rotatably disposed inside the expansion nut 5 for driving the outer peripheral wall of the expansion nut 5 to expand outward, so that the second installation end 22 is connected to the second member 20 through the expansion nut 5 . When in use, a second installation hole 201 is first opened on the surface of the second member 20, and the diameter of the second installation hole 201 is larger than the diameter of the outer contour of the expansion nut 5, and then the expansion nut 5 is pre-embedded in the second installation through clearance fit. In the hole 201, the second mounting end 22 is rotatably inserted into the interior of the expansion nut 5 (that is, the first mounting external thread portion 221 is threadedly connected with the internal thread structure of the expansion nut 5), so that when the second connecting member 2 rotates, the first The two mounting ends 22 drive the outer peripheral wall of the expansion nut 5 to expand radially outward gradually and abut the inner side wall of the second mounting hole 201 , so that the second mounting end 22 is firmly connected to the second member 20 through the expansion nut 5 .

In some embodiments, in order to enable the above-mentioned two second installation ends 22 to be rotated, in the prior art, a slot, a cross groove or a hexagonal socket is usually provided on the end face of the second connection end 21, and the screwdriver or The Allen wrench drives the second connecting end 21 to rotate to drive the second mounting end 22 to rotate. In other embodiments, as shown in FIGS. 42-55 , the second connecting member 2 is fixedly provided with an operating portion 24 between the second connecting end 21 and the second mounting end 22 , and the operating portion 24 has at least one first operation The plane or the first operating hole or the first operating convex point or the first operating groove, or, the cross-section of the operating portion 24 is adapted to the cross-section of the sleeve. In this way, the second connecting member 2 is fixedly provided with the operating portion 24 between the second connecting end 21 and the second mounting end 22 , and the second connecting member 2 is driven by using an external tool to act on the operating portion 24 to drive the operating portion 24 to rotate. Rotate as a whole, and then rotate the second installation end 22, which avoids that a word groove, a cross groove or a hexagonal socket is provided on the end face of the second connecting end 21 in the prior art, so that the end of the second connecting end 21 is The diameter size can be designed to be smaller, thereby reducing the cross-sectional area of the first connection channel 113; in addition, a threaded fastener 4 with a smaller diameter size can also be selected to cooperate with the connection groove 23 of the second connection end 21 for mutual insertion, Furthermore, the diameter of the first installation hole 102 on the first member 10 is made smaller, which improves the aesthetics of the finished furniture product.

It can be further understood that, in order to ensure that the external tool can drive the operating portion 24 to rotate to drive the second connecting piece 2 to rotate, the operating portion 24 is integrally formed on the second connecting piece 2, and the cross-section of the operating portion 24 needs to be designed to be non-circular. Alternatively, the operating portion 24 needs to be designed in a non-cylindrical structure. For example, as shown in FIGS. 42 , 44 , 45 , 44 , 50 , and 54 , the side wall of the operating portion 24 has at least one first operating plane, and the number of the first operating planes can be one, two or four. One or six, etc., the operation part 24 is clamped by an external tool such as a vice or other pliers or a wrench to drive the operation part 24 to rotate. In another example, the side wall of the operation part 24 has a first operation hole, and an external tool such as a screwdriver, a metal rod or an Allen wrench is inserted into the first operation hole to drive the operation part 24 to rotate. For another example, as shown in FIGS. 46 and 47 , the side wall of the operating portion 24 has a first operating bump or a first operating groove, and an external tool such as a vice or a wrench is used to clamp the first operating bump or the first operating groove. The operation part 24 is driven to rotate. 42 , 44 , 45 , 48 , 49 , 51 , and 52 , the cross-section of the operating portion 24 is adapted to the cross-section of the sleeve, and the external tool that drives the operating portion 24 to rotate at this time It is a socket wrench, wherein the socket wrench is a commonly used tool in the field, such as a manual socket wrench of the national standard GB T 3390.1-2004, or a manual socket wrench or an electric wrench of other national standards, and the cross-section of the socket is non-circular shape, including but not limited to triangle or square or hexagon or octagon or oval or waist circle or petal shape, etc., so that the socket wrench can drive the operation part 24 and the sleeve during the rotation of the socket wrench driving sleeve. The cylinder rotates synchronously, so that the second connecting piece 2 is rotated as a whole, and then the second mounting end 22 is rotated, so that the second mounting end 22 is firmly connected to the second member 20, or the second mounting end 22 is fixed by the expansion nut 5. connected to the second member 20 .

Further, as shown in FIG. 43 , when the second connecting member 2 has a cylindrical structure and has an operating portion 24 , the diameter of the end portion of the second connecting end 21 is set as D1, and the diameter of the ring-shaped connecting groove 23 is set as D1. The size is D2, wherein, in order to reduce the overall volume of the second connector 2 to improve the invisibility, 2.0mm≤D1≤8.5mm, 1.8mm≤D2≤8.5mm, wherein, D1 and D2 need to satisfy the relationship of D1>D2 The adaptive design means that the relationship in Table 1 below is satisfied:

D1(mm) D2(mm) 2 to 8.5 1.8 to 8.5 2 to 8.0 1.8 to 8.0 2 to 7.5 1.8 to 7.5 2 to 7.0 1.8 to 7.0 2 to 6.5 1.8 to 6.5 2 to 6.0 1.8 to 6.0 2 to 5.5 1.8 to 5.5 2 to 5.0 1.8 to 5.0 2 to 4.5 1.8 to 4.5 2 to 4.0 1.8 to 4.0 2 to 3.5 1.8 to 3.5

Table 1

As a third detachable connection method between the second installation end 22 of the second connector 2 and the second member 20 , as shown in FIGS. 56-58 , the structure of the second connector 2 in Embodiment 1 of the present invention is the same as The structure of the connecting rod of the four-in-one connecting piece in the prior art is completely different. Specifically, the second mounting end 22 is formed with a tapered portion, and the second connecting piece 2 is fixedly arranged between the second connecting end 21 and the second mounting end 22 . There is a second mounting male thread portion 25 . Further, the connection between the second connector 2 and the second member 20 in the first embodiment of the present invention is specifically as follows: the connecting assembly in the first embodiment of the present invention further includes an expansion body 6, and the interior of the expansion body 6 is formed with a tapered shape Channel 63; the tapered portion is slidably arranged in the tapered channel 63; the second mounting external thread portion 25 is threadedly connected with the rotary body 7 with internal thread; the outer side wall of the rotary body 7 has at least one second operating plane or first Two operating holes or second operating bumps or second operating grooves, or, the cross-section of the rotating body 7 is adapted to the cross-section of the sleeve; when the rotating body 7 is driven to rotate by an external tool, the tapered portion is in the conical shape The passage 63 slides a certain distance to make the outer peripheral wall of the expansion body 6 expand outward, so that the second installation end 22 is locked in the second installation hole 201 of the second member 20 through the expansion body 6 . Wherein, the outer peripheral side wall of the expansion body 6 is formed with a fastening boss, so as to increase the locking effect between the outer peripheral side wall of the expansion body 6 and the second installation hole 201 . The cross-sectional area of one end of the tapered portion is larger than the cross-sectional area of the other end. The outer peripheral side wall of the expansion body 6 may be expanded radially outward, and the shape of the tapered portion is not particularly limited here. The tapered portion is preferably in the shape of a truncated cone, for example, the tapered portion is integrally formed at one end of the second connecting member 2 away from the connecting groove 23 , and the inner peripheral wall of the tapered channel 63 is also in the shape of a truncated cone. The structure of the rotating body 7 in Embodiment 1 of the present invention is similar to the structure of the above-mentioned operating portion 24 , and the structure and driving principle of the rotating body 7 are omitted here.

Further, in order to enable the tapered portion to be smoothly placed in the tapered channel 63 in the expansion body 6, the expansion body 6 may be formed by splicing a plurality of sub-components. For example, as shown in FIG. 57, the expansion body 6 includes a first sub-component 61 and a The second sub-component 62, the first sub-component 61 is provided with a first tapered groove, and the second sub-component 62 is provided with a second tapered groove. The conical groove and the second conical groove spliced the conical channel 63 with each other. Wherein, before the first sub-component 61 and the second sub-component 62 are connected, the conical part is pre-placed in the first conical groove or the second conical groove through clearance fit, and the cross-sectional area of the conical part is The larger end is located in the first conical groove or the end with the larger cross-sectional area of the second conical groove, and the end with the smaller cross-sectional area of the tapered part is located in the first conical groove or the second conical groove The end with the smaller cross-sectional area, so that after the first sub-piece 61 and the second sub-piece 62 are connected, the tapered portion is placed in the tapered channel 63 and can slide in the tapered channel 63 . Further, the expansion body 6 and the conical part can be separate structures, that is, the conical part is only installed inside the expansion body 6 formed by splicing the first sub-component 61 and the second sub-component 62 during use, and then the expansion body 6 is assembled. Inserted into the first mounting hole 102 of the first member 10 . The expansion body 6 and the tapered part can also be connected structures, that is, after the first sub-piece 61 and the second sub-piece 62 are assembled, they are fixed by means of snapping or gluing, so as to limit the tapered part to the tapered channel 63 , so that the expansion body 6 and the tapered part form a connection structure.

When in use, a second installation hole 201 is first opened on the surface of the second member 20 , and the diameter of the second installation hole 201 is larger than the diameter of the outer contour of the expansion body 6 , and then the expansion body 6 is placed on the second member 20 through clearance fit. In the second mounting hole 201, when the external tool drives the rotating body 7 to rotate, the second connecting piece 2 slides in a straight line through the threaded connection between the internal thread of the rotating body 7 and the second mounting external thread portion 25, and drives the cone The shaped portion slides in the tapered channel 63, so that the end with the larger cross-sectional area of the tapered portion gradually slides toward the end with the smaller cross-sectional area of the tapered channel 63, so that the tapered portion is connected to the inner peripheral wall of the tapered channel 63. There is gradually an interference fit between them, so that the tapered portion is pressed against the inner wall of the tapered channel 63 , so that the outer peripheral wall of the expansion body 6 gradually expands radially outward and is connected to the second mounting hole 201 of the second member 20 . The inner sidewalls are snapped together, so that the second mounting end 22 is connected to the second member 20 through the expansion body 6 .

In some embodiments, as shown in FIGS. 21-24 , 53-54 , a concave portion 211 is formed on the outer peripheral wall of the second connecting end 21 , so that the second connecting end 21 is stepped, and the connecting groove is 23 is opened on the recessed portion 211 . Correspondingly, the position corresponding to the second connecting end 21 on the first connecting channel 113 is also stepped to increase the depth of the first connecting hole 114 , so that the threaded fastener 4 is located in the first connecting hole 114 There is enough space to be pre-installed in the first connection hole 114 to facilitate the insertion of the threaded fastener 4 into the installation channel 101 along with the first connection member 1, thereby improving the assembly efficiency.

In some embodiments, when the first connecting member 1 is connected with the second connecting member 2, that is, after the end of the second connecting member 2 with the connecting groove 23 is inserted into the first connecting channel 113, the following situations may exist : The connecting groove 23 is insufficient at the position where the first connecting hole 114 communicates with the first connecting channel 113 , which results in a gap between the side surface of the first member 10 and the surface of the second member 20 , which affects the aesthetics. To this end, as shown in FIG. 43 , a correction inclined portion 231 is formed at the position where the inner side wall of the connection groove 23 is connected with the groove bottom of the connection groove 23 . For example, the correction inclined portion 231 makes the inner side wall of the connection groove 23 appear as The threaded fastener 4 is in the shape of an inclined surface, so that when the threaded fastener 4 slides in the first connection hole 114 and makes one end of the threaded fastener 4 abut against the correction inclined portion 231 , the end of the threaded fastener 4 drives the first The second connecting piece 2 slides further in the first connecting channel 113 , thereby driving the second member 20 to move toward the first member 10 , so that the surface of the second member 20 is attached to the side surface of the first member 10 , so as to avoid the first member 10 . A gap is generated between the second member 20 and the appearance is improved.

Based on the connection assembly of the first embodiment of the present invention, the first member 10 and the second member 20 of the present invention are connected to each other through the connection assembly of the first embodiment of the present invention to form a connection system. The connection system is shown in Fig. 64-Fig. 65, it includes a first member 10, a second member 20, a first connector 1, a second connector 2 and a threaded fastener 4; wherein, the first connector 1, the second connector 2 and the threaded fastener For the structure of the component 4, please refer to the description of Embodiment 1 of the present invention above, and the repeated description is omitted here. One side of the first member 10 is provided with an installation channel 101 for accommodating the first connector 1 , the first connector 1 is inserted into the installation channel 101 , and the top of the first member 10 is provided with a first connection hole 114 that communicates with One side of the second member 20 is provided with a second mounting hole 201, and the end of the second connector 2 away from the connecting groove 23 (ie, the second mounting end 22) is mounted in the second mounting hole 201 Inside. Specifically, one side of the first member 10 is provided with an installation channel 101, and the top (or bottom) of the first member 10 is provided with a first installation hole 102 connected with the installation channel 101, so that the first connector 1 can be inserted and installed After the passage 101 , the position of the first connection hole 114 is opposite to and communicated with the position of the first installation hole 102 . For the installation method of the end of the second connector 2 away from the connection groove 23 in the second installation hole 201 of the second member 20, please refer to the connection method between the second installation end 22 and the second member 20 in the first embodiment of the present invention. , and details are omitted here. During installation, the threaded fastener 4 can be pre-installed in the first connection hole 114 and inserted into the installation channel 101 together with the first connection piece 1 , so that the position of the first connection hole 114 is the same as the position of the first installation hole 102 Correspondingly, the operator can use a tool such as a screwdriver from the outside of the first member 10 to pass through the first installation hole 102 and then drive the threaded fastener 4 to rotate in the first connection hole 114 to make the threaded fastener 4 rotate. One end of the connector is inserted into the connecting groove 23 , so as to restrict the pulling out of the second connector 2 from the first connecting channel 113 , so that the first member 10 and the second member 20 are firmly connected to each other.

Further, as shown in FIGS. 59-63 , when the first connector 1 includes the first connector body 11 and the mounting post 12 , the mounting channel 101 includes a first-stage sub-channel 101a and a second-stage sub-channel that communicate with each other 101b, the shape of the first-stage sub-channel 101a is adapted to the shape of the first connector body 11 for accommodating the first connector body 11, and the shape of the second-stage sub-channel 101b is adapted to the shape of the mounting post 12 It is used for accommodating the mounting post 12 to reduce the gap between the overall outer sidewall of the first connector 1 and the inner sidewall of the mounting channel 101 and improve the firmness and stability of the first connector 1 in the mounting channel 101 . In some embodiments, when the outer contour of the cross-section of the first connector body 11 is an axisymmetric shape or a non-axisymmetric shape, the cross-section of the first-stage sub-channel 101a may be an axisymmetric shape with at least two The second axis of symmetry, when the first connector 1 is inserted into the installation channel 101, it is necessary to distinguish the installation direction of the first connector body 11 in the first-stage sub-channel 101a to ensure that the first connector 1 is inserted into the installation channel 101 after the first The position of the connection hole 114 corresponds to and communicates with the position of the first installation hole 102, so as to avoid the need for disassembly and reassembly of the first connection piece 1 after reverse assembly. The minimum distance between the intersection points of at least two second symmetry axes is greater than zero, that is, the central axis of the second-stage sub-channel 101b and the central axis of the first-stage sub-channel 101a are not on the same line, at this time, the second-stage sub-channel 101b is relatively opposite to the first-stage sub-channel 101b. The first-stage sub-channel 101a is eccentric, for example, the cross-section of the first-stage sub-channel 101a and the cross-section of the second-stage sub-channel 101b are circular, respectively, and the central axis of the first-stage sub-channel 101a and the center of the second-stage sub-channel 101b The axes are not on the same line. Correspondingly, the central axis of the mounting column 12 and the central axis of the first connector body 11 are not on the same line, that is, the mounting column 12 is eccentrically arranged relative to the first connector body 11 . The operator needs to rotate the first connector body 11 to adjust the angle of the first connector body 11 in the first-stage sub-channel 101a so that the mounting post 12 can be inserted into the second-stage sub-channel 101b smoothly. The eccentricity of the first connector body 11 is to achieve the purpose of locating the first connection hole 114 and the first installation hole 102 to each other, and to ensure that the first connection hole 114 is communicated with the first installation hole 102 after the first connector 1 is inserted into the installation channel 101 .

In addition, the first member 10 and the second member 20 of the connection system in Embodiment 1 of the present invention can be connected to each other through one or more connection assemblies, so the present invention does not limit the connection assemblies between the first member 10 and the second member 20 The quantity can be designed according to the actual use.

Based on the connection assembly of the first embodiment of the present invention, the installation method for the first member 10 and the second member 20 using the above connection assembly includes the following steps:

S100 , an installation channel 101 is processed on one side of the first member 10 , and a first installation hole 102 communicated with the installation channel 101 is processed on the top of the first member 10 . For example, a six-sided drill or a common drill is used to drill into one side of the first member 10 and slide it for a certain distance to form the installation channel 101, and then use a drill to process the first installation hole 102 on the top (or bottom) of the first member 10. , wherein the diameter of the first installation hole 102 may be the same as or slightly larger than the diameter of the threaded fastener 4, or the diameter of the first installation hole 102 can be passed through by a tool for rotating the threaded fastener 4. The diameter of the first installation hole 102 is much smaller than the diameter of the first installation hole 102 processed on the first member 10 by using a four-in-one connector in the prior art, thereby improving the invisibility of the connecting assembly in Embodiment 1 of the present invention and improving the furniture The aesthetics of the finished product.

Further, when the first connector 1 includes the first connector body 11 and the mounting post 12, the mounting channel 101 includes a first-stage sub-channel 101a and a second-stage sub-channel 101b that communicate with each other. The cross section is an axisymmetric graph and has at least two second symmetry axes, and the minimum distance between the line where the central axis of the second-stage sub-channel 101b is located and the intersection of the at least two second symmetry axes is greater than zero, that is, the second-stage sub-channel The central axis of 101b is not on the same line as the central axis of the first-stage sub-channel 101a. At this time, the second-stage sub-channel 101b is eccentric relative to the first-stage sub-channel 101a, such as the cross-section of the first-stage sub-channel 101a and the second-stage sub-channel 101a. The cross sections of the sub-channels 101b are respectively circular, and the central axis of the first-stage sub-channel 101a and the central axis of the second-stage sub-channel 101b are not on the same straight line. In this way, the operator needs to rotate the first connector body 11 to adjust the angle of the first connector body 11 in the first-stage sub-channel 101a, so that the mounting post 12 can be smoothly inserted into the second-stage sub-channel 101b, so that through the mounting post 12 The eccentricity relative to the first connector body 11 is used to achieve the purpose of positioning the first connecting hole 114 and the first mounting hole 102 with each other, and to ensure that the first connecting hole 114 is connected to the first mounting hole 102 after the first connector 1 is inserted into the mounting channel 101 Pass.

S200 , install the end of the second connector 2 away from the connecting groove 23 on one side of the second member 20 . Wherein, for the installation method of the end of the second connector 2 away from the connection groove 23 and the second member 20, please refer to the connection method between the second installation end 22 and the second member 20 in Embodiment 1 of the present invention above, here Repeated descriptions are omitted.

S300, insert the first connector 1 into the installation channel 101 and connect the first connection hole 114 with the first installation hole 102, and pass the end of the second connector 2 with the connection groove 23 through the first connection channel 113 and at least a part of the connecting groove 23 is placed at the position where the first connecting channel 113 communicates with the first connecting hole 114, and the threaded fastener 4 is driven to rotate from the first mounting hole 102 to make the threaded fastener 4 One end of the connector is inserted into the connecting groove 23 to restrict the sliding of the second connecting piece 2 in the first connecting channel 113 , so that the first member 10 and the second member 20 are connected to each other. The threaded fastener 4 can be pre-installed in the first connection hole 114 and inserted into the installation channel 101 together with the first connection piece 1, so that the first connection hole 114 is communicated with the first installation hole 102, and then the The tool drives the threaded fastener 4 from the first installation hole 102 to rotate in the first connection hole 114 to insert one end of the threaded fastener 4 into the connection groove 23 , which makes the operation more convenient and shortens the assembly time. In addition, the threaded fastener 4 can also be installed separately from the first connector 1, that is, after the first connector 1 is inserted into the installation channel 101 alone, the first connection hole 114 is communicated with the first installation hole 102, and then the threaded fastener 4 is inserted into the first connection hole 114 through the first installation hole 102, and then a tool is used to drive the threaded fastener 4 from the first installation hole 102 to rotate in the first connection hole 114 so that one end of the threaded fastener 4 is inserted into the connection recess. In addition, a tool can be used to drive the threaded fastener 4 to rotate so that the external thread of the threaded fastener 4 forms an internal thread structure on the inner wall of the first installation hole 102 (the diameter of the first installation hole 102 is slightly smaller than The outer diameter of the threaded fastener 4), and then the threaded fastener 4 is driven to rotate in the first connection hole 114 so that one end of the threaded fastener 4 is inserted into the connection groove 23, so that the threaded fastener 4 passes through the first connection hole 114. A mounting hole 102 is threadedly connected with the first connecting hole 114 at the same time, so that one end of the threaded fastener 4 is inserted into the connecting groove 23 .

It should be further noted that, the order of the above-mentioned steps S100 and S200 may be interchanged with each other.

In addition, for the disassembly method of the first member 10 and the second member 20 in the first embodiment of the present invention, please refer to the reverse operation of S300, that is, first pull out the threaded fastener 4 from the connecting groove 23 to release the thread The fastener 4 locks the second connector 2, so that the end of the second connector 2 with the connecting groove 23 can be pulled out from the first connecting channel 113 and separated from the second member 20, so that the first The first member 10 and the second member 20 are separated from each other.

Example 2

Aiming at the technical problem of the low invisibility of the fixing pin of the four-in-one connector on the finished furniture product in the prior art, as shown in FIGS. 66 to 74 , Embodiment 2 of the present invention provides a connecting assembly, which is similar to the above The connection assembly of Embodiment 1 is similar, except that the connection assembly of Embodiment 2 of the present invention includes the first connection member 1, the second connection member 2 and the threaded fastener 4 of the above Embodiment 1, Also includes a third connector 3, the structure of the third connector 3 is the same as the structure of the fixing pin of the four-in-one connector in the prior art, specifically: as shown in Figures 75-81, the third connector A third connection channel 31 is opened on the outer side wall of 3 , and a third connection hole 32 communicated with the third connection channel 31 is opened at one end of the third connection member 3 . It should be noted that, for the specific structures, materials or shapes of the first connector 1, the second connector 2 and the threaded fastener 4 in the second embodiment of the present invention, please refer to the first connector 1, the first connector 1, the The detailed description of the specific structure or material or shape of the second connecting piece 2 and the threaded fastener 4 is omitted here.

Further, the connection relationship between the first connecting piece 1, the second connecting piece 2, the third connecting piece 3 and the threaded fastener 4 of the connecting assembly according to the second embodiment of the present invention is as follows: As shown, the third connecting piece 3 is inserted into the first connecting hole 114 and makes the third connecting passage 31 communicate with the first connecting passage 113, and one end of the second connecting piece 2 is inserted into the first connecting passage 113 and makes the third connecting passage 31 communicate with the first connecting passage 113. At least a part of the connection groove 23 is placed at the position where the third connection channel 31 communicates with the third connection hole 32; the threaded fastener 4 is threadedly connected in the third connection hole 32, and the threaded fastener 4 is connected in the third connection The hole 32 is slid so that one end of the threaded fastener 4 is inserted into the connecting groove 23 . Wherein, the material of the third connecting member 3 may be a metal material or a hard plastic material. For example, when the third connecting member 3 is made of a metal material, for example, a tap is used to form an inner wall of the third connecting hole 32 by tapping. Threaded structure, the threaded fastener 4 is threadedly connected to the inner threaded structure of the inner side wall of the third connection hole 32 to realize the threaded connection of the threaded fastener 4 in the third connection hole 32 . For another example, when the third connecting member 3 is a rigid plastic, the third connecting member 3 is integrally formed with metal threaded teeth on the inner wall of the third connecting hole 32 during the injection molding process. The threads on the inner wall of the third connection hole 32 are threadedly connected to realize the threaded connection of the threaded fastener 4 in the third connection hole 32 .

Based on the above solution, compared with the four-in-one connector of the prior art, the third connector 3 of the second embodiment of the present invention can be pre-installed in the first connecting hole 114 and the third connector 3 can be preinstalled in the first connecting hole 114. The three connecting channels 31 are communicated with the first connecting channel 113, which avoids the trouble of positioning the fixing pin in the first mounting hole 102 during assembly of the four-in-one connector in the prior art, makes the operation more convenient and quicker, and effectively shortens the connection time. Assembly time of the components on the first member 10 and the second member 20 . At the same time, the present invention does not need to design the first mounting hole 102 according to the diameter of the third connector 3 (ie, the diameter of the fixing pin in the prior art) when opening the first mounting hole 102 on the first member 10 , and only needs to make the first mounting hole The hole diameter of 102 is sufficient for the threaded fastener 4 to pass through and be inserted into the third connection hole 32, which greatly reduces the hole diameter of the first installation hole 102 to improve the connection assembly of the present invention between the first member 10 and the second member 20. Invisibility of the interior, thereby enhancing the aesthetics of the finished furniture. In addition, the threaded fastener 4 of the present invention can also be pre-installed in the third connection hole 32 (as shown in FIG. 67 ), so that the diameter of the first installation hole 102 can be so small that only the threaded fastener 4 can be rotated Then use a screwdriver and other tools to pass through the first installation hole 102 to drive the threaded fastener 4 to rotate in the third connection hole 32, and the four-in-one connector of the prior art needs to be assembled when assembling Compared with the threaded fastener 4 being inserted into the third connecting hole 32 from the outside of the first member 10, the operation is more convenient and quicker, which effectively shortens the assembling time of the connecting assembly on the first member 10 and the second member 20, and improves the performance of the first member. Assembly efficiency between 10 and second member 20 .

In some embodiments, according to the shape of the fixing pin of the existing four-in-one connector, the shape of the fixing pin is usually a cylindrical structure, and the third connector 3 of the second embodiment of the present invention is preferably a cylindrical structure. The cross-section of is adapted to the circular hole of the third connector 3 . However, the cylindrical third connecting piece 3 needs to adjust the installation angle in the first connecting hole 114 to ensure that the third connecting channel 31 communicates with the first connecting channel 113 . Usually, the end of the third connecting piece 3 is formed with a Grooves, tools such as coins or thin plates are inserted into the grooves to adjust the angle of the third connecting piece 3 in the first connecting hole 114, but due to the large axial depth of the first connecting channel 113, it is difficult to judge the first connection with the naked eye The channel 113 communicates with the third connection channel 31 , and there is a technical problem of difficulty in adjustment. Meanwhile, frequently adjusting the position of the third connection member 3 in the first connection hole 114 many times will easily lead to lower assembly efficiency. To this end, as shown in FIGS. 77 to 81 , the outer side wall of the third connecting piece 3 according to the second embodiment of the present invention has at least one positioning plane 33 or positioning convex point or positioning groove, or, the transverse direction of the third connecting piece 3 The cross-section is oval or waist-shaped; the shape of the inner side wall of the first connecting hole 114 and the shape of the outer side wall of the third connecting piece 3 cooperate with each other, that is, one side of the inner side wall of the first connecting hole 114 is in the shape of a plane or a groove or bumps, etc. In this way, when the third connecting member 3 is inserted into the first connecting hole 114, the outer side wall of the third connecting member 3 and the inner side wall of the first connecting hole 114 are shaped to fit each other, so that the first connecting channel 113 can be quickly connected to the inner wall of the first connecting hole 114. The third connecting channel 31 is connected to avoid the trouble of adjusting the angle of the third connecting piece 3 in the first connecting hole 114 , thereby improving the assembly efficiency of the connecting assembly of the second embodiment of the present invention.

In some embodiments, when the first member 10 or the second member 20 is subjected to a large gravitational load, the end of the second connecting piece 2 with the connecting groove 23 will bear a large load in the third connecting channel 31 It is easy to cause the connecting groove 23 to move greatly at the connection point between the third connecting channel 31 and the third connecting hole 32, thereby causing the connecting groove 23 to separate from the threaded fastener 4. At this time, the end of the second connecting member 2 with the connecting groove 23 is easily pulled out from the first connecting channel 113 , resulting in poor connection firmness and stability between the first member 10 and the second member 20 . To this end, both ends of the third connecting channel 31 respectively penetrate through opposite sides of the third connecting piece 3 , and one end of the second connecting piece 2 passes through the third connecting channel 31 and protrudes out of the third connecting piece 3 . outside, and at least a part of the connecting groove 23 is located at the position where the third connecting channel 31 communicates with the third connecting hole 32 . In this way, when the end of the second connecting piece 2 with the connecting groove 23 is bent under a large bending moment in the third connecting channel 31 , one end of the second connecting piece 2 will be pressed against the third connecting channel 31 . The inner side wall of one end, thereby limiting the moving distance of the connecting groove 23 at the connection between the third connecting channel 31 and the third connecting hole 32, preventing the connecting groove 23 from separating from the threaded fastener 4, thereby improving the first component The connection firmness and stability of the 10 and the second member 20 during use. In addition, when one end of the second connecting piece 2 and the inner side wall of one end of the third connecting channel 31 are pressed against each other, the gravity load bearing capacity of the first member 10 or the second member 20 can be further improved.

Further, as shown in FIG. 43 and FIG. 76 , when the second connecting member has the operating portion 24 and the third connecting member 3 is a cylindrical structure, the diameter of the end portion of the second connecting end 21 is set as D1, and the ring shape The diameter dimension of the connecting groove 23 is D2, and the diameter dimension of the third connecting piece is D3, wherein, in order to reduce the overall volume of the second connecting piece 2 to improve invisibility, 2.0mm≤D1≤8.5mm, 1.8mm≤ D2≤8.5mm, 4.5mm≤D3≤9.5mm, among them, D3, D1 and D2 need to satisfy the relationship of D3≥D1>D2 to be suitable for design, that is, to satisfy the relationship in Table 2 below:

D3(mm) D1(mm) D2(mm) 9.5 2 to 8.5 1.8 to 8.5 9.0 2 to 8.0 1.8 to 8.0 8.5 2 to 7.5 1.8 to 7.5 8.0 2 to 7.0 1.8 to 7.0 7.5 2 to 6.5 1.8 to 6.5 7.0 2 to 6.0 1.8 to 6.0 6.5 2 to 5.5 1.8 to 5.5 6.0 2 to 5.0 1.8 to 5.0 5.5 2 to 4.5 1.8 to 4.5 5.0 2 to 4.0 1.8 to 4.0 4.5 2 to 3.5 1.8 to 3.5

Table 2

Based on the connection assembly of the second embodiment of the present invention, the first member 10 and the second member 20 of the present invention are connected to each other through the connection assembly of the second embodiment of the present invention to form a connection system. The connection system is shown in Fig. 84-Fig. 85, including a first member 10, a second member 20, a first connector 1, a second connector 2, a third connector 3 and a threaded fastener 4; wherein, the first connector 1, the second connector For the structures of the component 2, the third connecting component 3 and the threaded fastener 4, please refer to the description of the second embodiment of the present invention above, and the detailed description is omitted here. One side of the first member 10 is provided with an installation channel 101 for accommodating the first connector 1 , the first connector 1 is inserted into the installation channel 101 , and the top of the first member 10 is provided with a first connection hole 114 that communicates with One side of the second member 20 is provided with a second mounting hole 201, and the end of the second connector 2 away from the connecting groove 23 (ie, the second mounting end 22) is mounted in the second mounting hole 201 Inside. Specifically, one side of the first member 10 is provided with an installation channel 101, and the top (or bottom) of the first member 10 is provided with a first installation hole 102 connected with the installation channel 101, so that the first connector 1 can be inserted and installed After the passage 101 , the position of the first connection hole 114 is opposite to and communicated with the position of the first installation hole 102 . Please refer to the second installation end 22 and the second member 20 of the above Embodiment 1 for the installation method of the end of the second connector 2 away from the connection groove 23 in the second installation hole 201 of the second member 20 according to the second embodiment of the present invention The connection mode between them is omitted here. During installation, the third connecting piece 3 is pre-installed in the first connecting hole 114 and inserted into the installation channel 101 together with the first connecting piece 1, so that the position of the first connecting hole 114 is the same as that of the first mounting hole 102. Correspondingly, the operator can use a tool such as a screwdriver from the outside of the first member 10 to pass through the first installation hole 102 and then drive the threaded fastener 4 to rotate in the third connection hole 32 to make the threaded fastener 4 rotate. One end is inserted into the connecting groove 23 , so as to restrict the second connecting piece 2 from being pulled out from the first connecting channel 113 , so that the first member 10 and the second member 20 are firmly connected to each other.

Further, as shown in FIGS. 82-83 , when the first connector 1 includes the first connector body 11 and the mounting post 12 , the mounting channel 101 includes a first-stage sub-channel 101a and a second-stage sub-channel that communicate with each other 101b, the shape of the first-stage sub-channel 101a is adapted to the shape of the first connector body 11 for accommodating the first connector body 11, and the shape of the second-stage sub-channel 101b is adapted to the shape of the mounting post 12 It is used for accommodating the mounting post 12 to reduce the gap between the overall outer sidewall of the first connector 1 and the inner sidewall of the mounting channel 101 and improve the firmness and stability of the first connector 1 in the mounting channel 101 . In some embodiments, when the outer contour of the cross-section of the first connector body 11 is an axisymmetric shape or a non-axisymmetric shape, the cross-section of the first-stage sub-channel 101a may be an axisymmetric shape with at least two The second axis of symmetry, when the first connector 1 is inserted into the installation channel 101, it is necessary to distinguish the installation direction of the first connector body 11 in the first-stage sub-channel 101a to ensure that the first connector 1 is inserted into the installation channel 101 after the first The position of the connection hole 114 corresponds to and communicates with the position of the first installation hole 102, so as to avoid the need for disassembly and reassembly of the first connection piece 1 after reverse assembly. The minimum distance between the intersection points of at least two second symmetry axes is greater than zero, that is, the central axis of the second-stage sub-channel 101b and the central axis of the first-stage sub-channel 101a are not on the same line, at this time, the second-stage sub-channel 101b is relatively opposite to the first-stage sub-channel 101b. The first-stage sub-channel 101a is eccentric, for example, the cross-section of the first-stage sub-channel 101a and the cross-section of the second-stage sub-channel 101b are circular, respectively, and the central axis of the first-stage sub-channel 101a and the center of the second-stage sub-channel 101b The axes are not on the same line. Correspondingly, the central axis of the mounting column 12 and the central axis of the first connector body 11 are not on the same line, that is, the mounting column 12 is eccentrically arranged relative to the first connector body 11 . The operator needs to rotate the first connector body 11 to adjust the angle of the first connector body 11 in the first-stage sub-channel 101a so that the mounting post 12 can be inserted into the second-stage sub-channel 101b smoothly. The eccentricity of the first connector body 11 is to achieve the purpose of locating the first connection hole 114 and the first installation hole 102 to each other, and to ensure that the first connection hole 114 is communicated with the first installation hole 102 after the first connector 1 is inserted into the installation channel 101 .

In addition, the first member 10 and the second member 20 of the connection system in the second embodiment of the present invention can be connected to each other through one or more connection assemblies, so the present invention does not limit the connection assemblies between the first member 10 and the second member 20 The quantity can be designed according to the actual use.

Based on the connection assembly of the second embodiment of the present invention, the installation method of the first member 10 and the second member 20 using the above connection assembly includes the following steps:

S100', an installation channel 101 is processed on one side of the first member 10, and a first installation hole 102 communicated with the installation channel 101 is processed on the top of the first member 10. For example, a six-sided drill or a common drill is used to drill into one side of the first member 10 and slide it for a certain distance to form the installation channel 101, and then use a drill to process the first installation hole 102 on the top (or bottom) of the first member 10. , wherein the diameter of the first installation hole 102 may be the same as or slightly larger than the diameter of the threaded fastener 4, or the diameter of the first installation hole 102 can be passed through by a tool for rotating the threaded fastener 4. The diameter of the first installation hole 102 is much smaller than the diameter of the first installation hole 102 processed on the first member 10 by using a four-in-one connector in the prior art, thereby improving the invisibility of the connecting assembly in the second embodiment of the present invention and improving the furniture The aesthetics of the finished product.

Further, when the first connector 1 includes the first connector body 11 and the mounting post 12, the mounting channel 101 includes a first-stage sub-channel 101a and a second-stage sub-channel 101b that communicate with each other. The cross section is an axisymmetric graph and has at least two second symmetry axes, and the minimum distance between the line where the central axis of the second-stage sub-channel 101b is located and the intersection of the at least two second symmetry axes is greater than zero, that is, the second-stage sub-channel The central axis of 101b is not on the same line as the central axis of the first-stage sub-channel 101a. At this time, the second-stage sub-channel 101b is eccentric relative to the first-stage sub-channel 101a, such as the cross-section of the first-stage sub-channel 101a and the second-stage sub-channel 101a. The cross sections of the sub-channels 101b are respectively circular, and the central axis of the first-stage sub-channel 101a and the central axis of the second-stage sub-channel 101b are not on the same straight line. In this way, the operator needs to rotate the first connector body 11 to adjust the angle of the first connector body 11 in the first-stage sub-channel 101a, so that the mounting post 12 can be smoothly inserted into the second-stage sub-channel 101b, so that through the mounting post 12 The eccentricity relative to the first connector body 11 is used to achieve the purpose of positioning the first connecting hole 114 and the first mounting hole 102 with each other, and to ensure that the first connecting hole 114 is connected to the first mounting hole 102 after the first connector 1 is inserted into the mounting channel 101 Pass.

S200', install the end of the second connector 2 away from the connecting groove 23 on one side of the second member 20. Wherein, for the installation method of the end of the second connector 2 away from the connection groove 23 and the second member 20 in the second embodiment of the present invention, please refer to the connection method between the second installation end 22 and the second member 20 in the above embodiment 1 , and details are omitted here.

S300 ′, insert the first connector 1 into the installation channel 101 and connect the first connection hole 114 with the first installation hole 102 , and pass the end of the second connector 2 with the connection groove 23 through the first connection Inside the channel 113 and placing at least a part of the connecting groove 23 at the position where the first connecting channel 113 communicates with the first connecting hole 114, the threaded fastener 4 is driven to rotate from the first mounting hole 102 to make the threaded fastener One end of 4 is inserted into the connecting groove 23 to restrict the sliding of the second connecting piece 2 in the first connecting channel 113 , so as to connect the first member 10 and the second member 20 to each other. Wherein, the third connecting member 3 is pre-installed in the first connecting hole 114, and the third connecting channel 31 is communicated with the first connecting channel 113, and then the threaded fastener 4 can also be pre-installed in the third connecting hole. 32, the third connector 3 and the threaded fastener 4 are inserted into the installation channel 101 together with the first connector 1 to make the first connection hole 114 communicate with the first installation hole 102, and then use a tool to remove the The threaded fastener 4 is driven to rotate in the third connection hole 32 so that one end of the threaded fastener 4 is inserted into the connection groove 23 , the operation is more convenient and the assembly time is shortened. In addition, the threaded fastener 4 can also be installed separately from the third connecting piece 3, that is, the third connecting piece 3 is inserted into the installation channel 101 together with the first connecting piece 1 first, and then the first connecting hole 114 is connected to the first mounting hole 102. Then, the threaded fastener 4 is inserted into the third connection hole 32 through the first installation hole 102, and then a tool is used to drive the threaded fastener 4 from the first installation hole 102 to rotate in the third connection hole 32 to make the thread tighten. One end of the fastener 4 is inserted into the connecting groove 23; in addition, a tool can be used to drive the threaded fastener 4 to rotate so that the external thread of the threaded fastener 4 forms an internal thread structure on the inner wall of the first installation hole 102 (No. The diameter of a mounting hole 102 is slightly smaller than the outer diameter of the threaded fastener 4), and then the threaded fastener 4 is driven to rotate in the third connection hole 32 so that one end of the threaded fastener 4 is inserted into the connection groove 23, and so on The threaded fastener 4 is threadedly connected with the third connection hole 32 while the first installation hole 102 is threadedly connected, so that one end of the threaded fastener 4 is inserted into the connection groove 23 .

It should be further noted that the order of the above-mentioned steps S100' and S200' can be exchanged with each other.

In addition, for the disassembly method of the first member 10 and the second member 20 in the second embodiment of the present invention, please refer to the reverse operation of S300', that is, first pull out the threaded fastener 4 from the connecting groove 23 to release the The threaded fastener 4 locks the second connecting piece 2, so that the end of the second connecting piece 2 with the connecting groove 23 can be pulled out from the first connecting channel 113 and separated from the second member 20, so that the The first member 10 and the second member 20 are separated from each other.

Example 3

Embodiment 3 of the present invention provides a connection assembly, which is similar to the connection assembly of Embodiment 1 or Embodiment 2 above, except that: as shown in FIG. 86 to FIG. The second connecting end 21 and the second mounting end 22 of the second connecting member 2 of the connecting assembly of There is a hinge portion 26 between the second mounting ends 22, and the second connecting end 21 and the second mounting end 22 are mutually rotated through the hinge portion 26, so that the second connecting end 21 and the second mounting end 22 form a certain angle, the angle is For example, it is 10°, 30°, 65°, 100°, 150°, or 180°. As shown in FIG. 91 , when the sides of the first member 10 and the second member 20 that are connected to each other and are attached to each other are inclined surfaces, the second connecting end 21 is adjusted according to the inclined surfaces where the first member 10 and the second member 20 are connected to each other. The angle between the second mounting end 22 and the second mounting end 22 makes the second mounting end 22 fixedly connected to the connecting surface of the second member 20 , and then the second connecting end 21 is inserted into the first connecting member A connecting channel 113 , and finally the connecting surface of the first member 10 and the connecting surface of the second member 20 are attached to each other to realize the invisible connection, and the threaded fastener 4 is driven to move and insert into the connecting groove 23 to restrict the second connection The end 21 is pulled out from the first connection channel 113 .

It should be noted that, for other structures of the second connector 2 in Embodiment 3 of the present invention, please refer to the structure of the second connector 2 in Embodiment 1 or Embodiment 2 above, and details are omitted here. For example, as shown in FIGS. 86-87 and FIGS. 89-90 , when the second connecting member 2 is provided with the operating portion 24 , the operating portion 24 may be closer to the second connecting end 21 than the hinge portion 26 . For another example, as shown in FIG. 88 , when the second connecting member 2 is provided with the rotating body 7 , the rotating body 7 is closer to the second mounting end 22 than the hinge portion 26 .

Further, as shown in FIG. 92 , in order to insert the first connector 1 into the interior of the first member 10 more stealthily and not affect the bonding between the connecting surface of the first member 10 and the connecting surface of the second member 20, the present invention The end of the first connecting end 111 of the first connector 1 of the third embodiment is sharp, and the inclination angle of the end of the first connecting end 111 is the same as the inclination of the connecting surface of the first member 10, so that the first connector After being inserted into the installation channel 101 of the first member 10, the end of the first connecting end 111 is flush with the connecting surface of the first member 10, so as to achieve the purpose of invisibility.

Further, the hinge portion 26 of the third embodiment of the present invention may be a pivot shaft or a hinge ball or a universal joint structure. Specifically, for example, as shown in FIGS. 86-88 , when the hinge portion 26 is a pivot shaft, the second connecting end 21 and the second mounting end 22 are respectively provided with pivot holes, and a pin shaft or a cylindrical structure is used as the pivot shaft to pass through them in turn. The pivot holes are provided on the second connection end 21 and the second installation end 22 so that the second connection end 21 and the second installation end 22 can rotate relative to each other. For another example, as shown in 89-90, when the hinge portion 26 is a universal joint, the universal joint is, for example, a cross shaft, the second connecting end 21 and the second mounting end 22 are respectively provided with shaft holes, The rotating shaft hole is sleeved on the first rotating shaft of the cross shaft, and the rotating shaft hole of the second installation end 22 is sleeved on the second rotating shaft of the cross shaft, so that the second connecting end 21 and the second installation end 22 are respectively around the cross shaft. The rotation of the two axes realizes the angle adjustment of the second connection end 21 and the second installation end 22 in three-dimensional space, the angle adjustment is more flexible, and the assembly convenience is improved, so that the connection assembly of the third embodiment of the present invention is suitable for two The connecting surface of each furniture panel is an invisible connection of inclined surfaces, which improves the aesthetics of the finished furniture.

In the description of this specification, reference to the terms "one embodiment," "some embodiments," "exemplary embodiment," "example," "specific example," or "some examples", etc., is meant to incorporate the embodiments A particular feature, structure, material, or characteristic described by an example or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, The scope of the invention is defined by the claims and their equivalents.

Claims (35)

1. A connection assembly, comprising:

the outer side wall of the first connecting piece is provided with at least one fastening inverted tooth;

a second connecting piece, one end of which is provided with a connecting groove, and one end of the second connecting piece is arranged in the first connecting channel in a penetrating way and at least one part of the connecting groove is arranged at the position where the first connecting channel is communicated with the first connecting hole; and

the outer peripheral side wall of the threaded fastener is provided with an external thread structure, the threaded fastener is in threaded connection with the first connecting hole, and the threaded fastener slides in the first connecting hole so that one end of the threaded fastener is inserted into the connecting groove.

2. A connection assembly, comprising:

the outer side wall of the first connecting piece is provided with at least one fastening inverted tooth;

a second connecting piece, one end of which is formed with a connecting groove;

a third connecting piece, wherein a third connecting channel is arranged on the outer side wall of the third connecting piece, a third connecting hole communicated with the third connecting channel is arranged at one end of the third connecting piece, the third connecting piece is inserted into the first connecting hole and enables the third connecting channel to be communicated with the first connecting channel, one end of the second connecting piece is arranged in the first connecting channel in a penetrating way and enables at least one part of the connecting groove to be arranged at the position where the third connecting channel is communicated with the third connecting hole; and

the outer peripheral side wall of the threaded fastener is provided with an external thread structure, the threaded fastener is in threaded connection with the third connecting hole, and the threaded fastener slides in the third connecting hole so that one end of the threaded fastener is inserted into the connecting groove.

3. The connecting assembly as set forth in claim 1, wherein one end of the threaded fastener inserted into the connecting groove is pointed, and the threaded fastener is threadedly coupled with the inner sidewall of the first connecting hole by a self-tapping type.

4. The connection module of claim 1, wherein the first bore has an inner sidewall integrally formed with a threaded ridge, and the threaded fastener is threadably coupled to the first bore by mating with the threaded ridge.

5. The connection assembly of claim 4, wherein the thread ridge is metal.

6. The coupling assembly of claim 1 further comprising a first metal block disposed within the first coupling aperture, the first metal block defining a first threaded aperture, the threaded fastener threadably engaging the first threaded aperture to threadably couple the threaded fastener within the first coupling aperture.

7. The connection assembly of claim 6, wherein the first metal block is clamped inside the first connection hole in an interference fit manner.

8. The connecting assembly of claim 6, wherein a protrusion is formed on an inner sidewall of the first connecting hole, and the protrusion is disposed at a position where the first connecting channel communicates with the first connecting hole; the first metal block is positioned between the lug boss and the communication positions of the first connecting hole and the first connecting channel.

9. The connecting assembly of claim 8, wherein the outer sidewall of the first connecting member defines an insertion hole communicating with the first connecting hole, and the first metal block is inserted between the protruding portion and the communication portion of the first connecting hole and the first connecting channel through the insertion hole.

10. The connecting assembly of claim 1, further comprising a second metal block disposed in the first connecting hole opening, the second metal block defining a second threaded hole in communication with the first connecting hole; the threaded fastener is in threaded connection with the second threaded hole in a matched mode, so that the threaded fastener is in threaded connection with the first connecting hole.

11. The connecting assembly of claim 10, wherein the first connecting member is formed with a receiving groove along an open periphery of the first connecting hole for receiving the second metal block.

12. The connecting assembly of claim 2, wherein the outer sidewall of the third connector has at least one positioning plane or positioning bump or positioning groove, or the cross section of the third connector is oval or oval;

the shape of the inner side wall of the first connecting hole is matched with the shape of the outer side wall of the third connecting piece.

13. The connecting assembly according to claim 2, wherein both ends of the third connecting passage respectively penetrate through opposite sides of the third connecting member, one end of the second connecting member penetrates through the third connecting passage and protrudes outside the third connecting member, and at least a portion of the connecting groove is located at a position where the third connecting passage communicates with the third connecting hole.

14. The connection assembly of claim 1 or 2, wherein the first connection member is a metal member or a rigid plastic member.

15. The connection assembly of claim 1 or 2, wherein the first connector includes a first connector body and a mounting post integrally formed with the first connector body, the first connector body including a first connection end and a first mounting end that are opposed, the first connection channel being located at the first connection end, the mounting post being located at the first mounting end;

the first connecting hole is located on the outer side wall of the first connecting piece body, and the outer side wall of the first connecting piece body and/or the outer side wall of the mounting column are/is provided with the fastening inverted teeth.

16. The connector assembly of claim 15, wherein the outer sidewall of the first connector body is contoured in an axisymmetric pattern and has at least two first axes of symmetry, and wherein the minimum distance between a line along the central axis of the mounting post and an intersection of the at least two first axes of symmetry is greater than zero, as viewed from the first connector end toward the first mounting end.

17. The connection assembly of claim 16, wherein the first connector body is cylindrical and the central axis of the mounting post is not collinear with the central axis of the first connector body.

18. The connection assembly of claim 15, wherein the outer sidewall of the first connector includes first and second opposing sides, the first connection aperture opens on the first side, and the threaded fastener is inserted into the first connection aperture from the first side of the first connector;

setting a distance between a central axis of the first connecting passage and a first side of the first connecting piece to be L1, and setting a distance between the central axis of the first connecting passage and a second side of the first connecting piece to be L2; wherein L1 and L2 satisfy: l1> L2.

19. The connecting assembly of claim 18, wherein a minimum distance between the second side of the first connector and the inner sidewall of the first connecting channel is set to L3; wherein L3 satisfies: l3 is more than or equal to 0.3mm and less than or equal to 6 mm.

20. The connector assembly of claim 15 wherein the outer side wall of the first connector body is provided with a locating boss.

21. The connecting assembly according to claim 1 or 2, wherein a correction slope portion is formed at a position where an inner side wall of the connecting groove is connected to a groove bottom of the connecting groove.

22. A connection assembly according to claim 1 or claim 2, wherein the second connector has opposed second connecting ends on which the connection recess is located and second mounting ends for removable connection to a second member.

23. The connection module according to claim 22, wherein a recess is formed in an outer circumferential wall of the second connection end, and the connection groove is opened in the recess.

24. The connection module of claim 22 wherein an outer side wall of said second mounting end is formed with a first mounting external thread portion.

25. The coupling assembly of claim 24, further comprising an expansion nut, wherein the second mounting end is rotatably disposed within the expansion nut for driving the outer peripheral wall of the expansion nut to expand outwardly to couple the second mounting end to the second member via the expansion nut.

26. The connecting assembly of claim 22, wherein the second connecting member is fixedly provided with an operating portion between the second connecting end and the second mounting end, the operating portion having at least one first operating plane or first operating hole or first operating bump or first operating groove, or the cross section of the operating portion being adapted to the cross section of the sleeve.

27. The connection assembly of claim 22, further comprising an expansion body having a tapered channel formed therein;

the second mounting end is provided with a conical part which is arranged in the conical channel in a sliding manner; a second mounting external thread part is fixedly arranged between the second connecting end and the second mounting end of the second connecting piece, and the second mounting external thread part is in matched threaded connection with a rotating body with internal threads; the outer side wall of the rotating body is provided with at least one second operating plane or second operating hole or second operating convex point or second operating groove, or the cross section of the rotating body is matched with the cross section of the sleeve;

when the rotating body is driven to rotate by an external tool, the conical part slides in the conical channel for a certain distance to enable the peripheral wall of the expansion body to expand outwards, so that the second mounting end is connected to a second component through the expansion body.

28. The connection assembly of claim 22, wherein the second connector member has a hinge portion between the second connection end and the second mounting end, the second connection end and the second mounting end being rotatable relative to each other via the hinge portion.

29. A connection system comprising a first member, a second member and a connection assembly as claimed in any one of claims 1 to 28;

one side of the first member is provided with an installation channel for accommodating the first connecting piece, and the top of the first member is provided with a first installation hole communicated with the first connecting hole;

and one side of the second member is provided with a second mounting hole, and one end of the second connecting piece, which is far away from the connecting groove, is mounted in the second mounting hole.

30. The connecting system of claim 29 wherein the installation channel comprises a first-stage sub-channel and a second-stage sub-channel that are interconnected, the first-stage sub-channel having an axisymmetric cross-section and at least two second axes of symmetry, the second-stage sub-channel having a center axis that is located at a minimum distance greater than zero from an intersection of the at least two second axes of symmetry.

31. The connecting system of claim 30 wherein the cross-section of the first-stage sub-passageway and the cross-section of the second-stage sub-passageway are each circular, and the central axis of the first-stage sub-passageway is not collinear with the central axis of the second-stage sub-passageway.

32. A method of installation using a connection assembly according to any of claims 1 to 28, comprising the steps of:

a mounting channel is processed on one side of the first component, and a first mounting hole communicated with the mounting channel is processed on the top of the first component;

mounting one end of the second connecting piece far away from the connecting groove on one side of the second component;

inserting the first connecting piece into the mounting channel and communicating the first connecting hole with the first mounting hole, penetrating the end of the second connecting piece with the connecting groove into the first connecting channel and placing at least one part of the connecting groove at the position where the first connecting channel is communicated with the first connecting hole, driving the threaded fastener to rotate from the first mounting hole so that one end of the threaded fastener is inserted into the connecting groove to limit the second connecting piece to slide in the first connecting channel, and thus connecting the first member and the second member with each other.

33. The mounting method according to claim 32, wherein the mounting channel comprises a first-stage sub-channel and a second-stage sub-channel which are communicated with each other, the cross section of the first-stage sub-channel is in an axisymmetric pattern and has at least two second symmetry axes, and the minimum distance between the intersection point of a straight line where the central axis of the second-stage sub-channel is located and the at least two second symmetry axes is greater than zero.

34. The method of claim 33, wherein the cross-section of the first-stage sub-passageway and the cross-section of the second-stage sub-passageway are each circular, and the central axes of the first-stage sub-passageway and the second-stage sub-passageway are not collinear.

35. The method of mounting of claim 32, wherein the threaded fastener is inserted through the first mounting hole and one end of the threaded fastener is inserted into the attachment recess.

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