CN109962361B - Connecting terminal - Google Patents

Abstract

The embodiment of the invention provides a wiring terminal. The wiring terminal comprises a conductive sheet and an elastic sheet; the elastic sheet is provided with a wire clamping part and an elastic part; the conducting strip is arranged opposite to the elastic part, and the conducting wire is pressed between the conducting strip and the elastic part through elastic deformation of the elastic part; the wire clamping portion applies a clamping force to one side of the pressed position of the wire. According to the technical scheme provided by the embodiment of the invention, through structural improvement of the elastic sheet, the purposes that the elastic sheet has good conductivity and good clamping force can be realized without selecting the elastic sheet with high cost or adding new parts, the structure is simple, and the product is easier to miniaturize.

Description

Connecting terminal

Technical Field

The invention relates to the technical field of electric connectors, in particular to a wiring terminal.

Background

The wiring terminal is an accessory product for realizing electric connection, and two or more wires can be connected at any time according to the needs through the wiring terminal without welding or winding the wires together, so that the electric connector is convenient and quick.

At present, the requirements on the clamping force of the wires of the wiring terminals are higher and higher. The spring plate with good conductivity and good clamping effect has high price; the spring plate is not selected, new components are required to be added in the wiring terminal, the structural complexity of the wiring terminal is increased, and the miniaturization design of the product becomes more difficult.

Disclosure of Invention

The present invention has been made in view of the above-mentioned problems, and has as its object to provide a connection terminal which solves the above-mentioned problems or at least partially solves the above-mentioned problems.

Thus, in one embodiment of the present invention, there is provided a connection terminal including a conductive sheet and a spring sheet; wherein,

The elastic sheet is provided with a wire clamping part and an elastic part;

The conducting strip is arranged opposite to the elastic part, and the conducting wire is pressed between the conducting strip and the elastic part through elastic deformation of the elastic part;

the wire clamping portion applies a clamping force to one side of the pressed position of the wire.

Optionally, the direction of the pressing force applied by the elastic part to the wire is a first direction; the direction of the clamping force applied to the lead by the wire clamping part is a second direction; the first direction is perpendicular to the second direction or the first direction is parallel to the second direction.

Optionally, the spring plate includes a fixing portion forming a lead channel; the fixing part is sequentially provided with a spring tongue and at least one elastic clamping arm from one end to the other end of the lead channel; the spring tongue is bent towards the conductive sheet to form the elastic part, and at least one elastic clamping arm is bent towards the lead channel to form the wire clamping part.

Optionally, the fixing part is of a U-shaped structure; the spring tongue is arranged on one straight section of the U-shaped structure or on the middle section of the U-shaped structure, which connects the two straight sections; the at least one elastic clamping arm is arranged on one straight section of the U-shaped structure or distributed on two straight sections of the U-shaped structure.

Optionally, a first side of a middle section between two flat sections of the U-shaped structure extends out of the spring tongue in a first direction; two second side edges of the two straight sections of the U-shaped structure, which are connected with the first side edges, extend out of the two elastic clamping arms which are bent in opposite directions towards the first direction respectively; the end of the side where the third side of the U-shaped structure is located is a lead inlet of the lead channel, and the third side is a side of the middle section opposite to the first side.

Optionally, the spring tongue is located in a space formed between the two resilient clip arms.

Optionally, two opposite back sides of two straight sections of the U-shaped structure are respectively provided with a fastening structure, and the elastic sheet is fastened in the insulating housing of the wiring terminal through the fastening structure.

Optionally, at least one elastic clamping arm is arranged on one straight section of the U-shaped structure towards the inner side of the U-shaped structure, and the at least one elastic clamping arm and the other straight section of the U-shaped structure form the wire clamping part; or alternatively

At least one elastic clamping arm is arranged on one straight section of the U-shaped structure towards the inner side of the U-shaped structure, and at least one elastic clamping arm is arranged on the other straight section of the U-shaped structure towards the inner side of the U-shaped structure;

A part of one flat section of the U-shaped structure, which is longer than the other flat section, is bent towards the inner side of the U-shaped structure to form the spring tongue;

and a lead inlet of the lead channel is formed in the middle section between the two straight sections of the U-shaped structure.

Optionally, the number of at least one elastic clamping arm arranged on two straight ends of the U-shaped structure is the same, and the positions of the at least one elastic clamping arm are corresponding.

Optionally, the wiring terminal further comprises an insulating housing, a slot is formed in the insulating housing, and the conductive sheet is pushed into the slot along the insertion direction of the wire;

and limit stops are arranged on two opposite side edges of the conducting strip, and are pushed into place when being propped against the bottom of the slot in the pushing process.

Optionally, the slot is arranged in the middle of the insulating shell, and the conducting strip inserted into the slot divides the insulating shell into an upper layer and a lower layer;

Elastic parts of elastic sheets accommodated in the upper and lower layers of spaces of the insulating shell are positioned at two sides of the conducting strip so as to compress wires inserted through the upper and lower layers of spaces on two sides of the conducting strip.

Optionally, the insulating housing includes: the body shell is provided with an opening, and the cover body is buckled at one end of the opening;

At least two wire inlet holes are formed in the cover body;

And a partition wall is arranged between the at least two wire inlet holes.

Optionally, the wire inlet holes are stepped holes, the hole diameters of the wire inlet holes are gradually reduced along the insertion direction of the wires, and two adjacent hole diameters are in conical surface transitional connection.

Optionally, at least one isolation rib is arranged in the body shell;

the at least one isolation rib isolates the space in the body shell from at least two mounting cavities for mounting the elastic sheets.

Optionally, the conductive sheet is of a flat plate structure, or the conductive sheet includes a straight plate portion and an inclined plate portion connected to the straight plate portion and inclined to the elastic portion.

According to the technical scheme provided by the embodiment of the invention, the wire clamping part and the elastic part are additionally arranged on the elastic sheet, the elastic part and the conductive sheet are combined to act for compressing the wire once, and then the wire clamping part is used for clamping the wire for the second time, so that the clamping force can be effectively improved while the electric connection effect is ensured; according to the technical scheme provided by the embodiment of the invention, through structural improvement of the elastic sheet, the purposes that the elastic sheet has good conductivity and good clamping force can be realized without selecting the elastic sheet with high cost or adding new parts, the structure is simple, and the product is easier to miniaturize.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of a connection terminal according to an embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view of a connecting terminal according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a spring and a wire in a connection terminal according to an embodiment of the present invention;

FIG. 4 is a side view of the view shown in FIG. 3;

fig. 5 is a schematic structural diagram of an implementation of a spring in a connection terminal according to an embodiment of the present invention;

FIG. 6 is a side view of the view shown in FIG. 5;

fig. 7 is an isometric view of an implementation structure of a spring in a terminal according to an embodiment of the present invention;

fig. 8 is an isometric view of another implementation structure of a spring in a terminal according to an embodiment of the present invention;

FIG. 9 is a side view of the view shown in FIG. 8;

FIG. 10 is a schematic view of an implementation structure of a body shell of an insulating housing according to an embodiment of the present invention;

FIG. 11 is a right side view of FIG. 10;

FIG. 12 is a top view of FIG. 11;

FIG. 13 is an isometric view of one implementation of a body shell of an insulated housing according to an embodiment of the invention;

FIG. 14 is an isometric view of one implementation of a cover for an insulated housing according to an embodiment of the invention;

fig. 15 is a schematic structural view of a connection terminal according to another embodiment of the present invention;

Fig. 16 is a schematic view of an implementation structure of a body shell of an insulating housing in a connection terminal according to another embodiment of the present invention;

FIG. 17 is a top view of the device shown in FIG. 16;

fig. 18 is an isometric view of an implementation of a body housing of an insulating housing in a terminal according to another embodiment of the present invention;

Fig. 19 is an isometric view of an implementation structure of a cover body of an insulating housing in a connection terminal according to another embodiment of the present invention;

Fig. 20 is a schematic diagram of another implementation structure of a spring in a connection terminal according to an embodiment of the present invention;

fig. 21 is a schematic view of another implementation structure of a spring in a connection terminal according to an embodiment of the present invention;

Fig. 22 is a schematic diagram of another implementation structure of a spring in a connection terminal according to an embodiment of the present invention;

Fig. 23 is a schematic diagram of another implementation structure of a spring in a connection terminal according to an embodiment of the present invention;

fig. 24 is a schematic view of a spring sheet applying a pressing force and a clamping force to an inserted wire in a terminal according to an embodiment of the present invention;

fig. 25 is a schematic structural view of a connection terminal according to another embodiment of the present invention;

fig. 26 is a cross-sectional view of the terminal of the structure shown in fig. 25;

fig. 27 is a schematic structural view of a connection terminal according to another embodiment of the present invention;

fig. 28 is a cross-sectional view of the terminal of the structure shown in fig. 27.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention. It should be noted that, the descriptions of "first" and "second" herein are used to distinguish different components, positions, and the like, and do not represent a sequence, and are not limited to the "first" and the "second" being different types.

Fig. 1 and 2 show schematic structural diagrams of a connection terminal according to an embodiment of the present invention. As shown in fig. 1, the connecting terminal comprises a conductive sheet 1 and a spring sheet 2. The elastic sheet 2 is provided with a thread clamping part 21 and an elastic part 22. The conductive sheet 1 is disposed opposite to the elastic portion 22, and the conductive wire 3 is pressed between the conductive sheet 1 and the elastic portion 22 by elastic deformation of the elastic portion 22. The wire clamping portion 21 applies a clamping force to one side of the pressed position of the wire 3. The pressing position of the wire 3 is a position where the elastic portion 22 applies a pressing force to the wire 3.

According to the technical scheme provided by the embodiment of the invention, the wire clamping part and the elastic part are additionally arranged on the elastic sheet, the elastic part and the conductive sheet are combined to act for compressing the wire once, and then the wire clamping part is used for clamping the wire for the second time, so that the clamping force can be effectively improved while the electric connection effect is ensured; according to the technical scheme provided by the embodiment of the invention, through structural improvement of the elastic sheet, the purposes that the elastic sheet has good conductivity and good clamping force can be realized without selecting the elastic sheet with high cost or adding new parts, the structure is simple, and the product is easier to miniaturize.

In a specific implementation, the direction of the pressing force applied to the wire 3 by the elastic portion 22 may be parallel or perpendicular to the direction of the clamping force applied to the wire 3 by the wire clamping portion 21. For convenience of description, the direction of the pressing force applied to the wire 3 by the elastic portion 22 is a first direction; the clamping force applied to the lead 3 by the wire clamping part 21 is in a second direction; i.e. the first direction is perpendicular to the second direction or the first direction is parallel to the second direction.

The structural elastic sheet shown in fig. 3 and 4 is an example in which the first direction and the second direction are perpendicular to each other. Referring to fig. 3 and 4, the clamping force applied to the wire 3 by the wire clamping portion 21 is in a bi-direction X (i.e., a first direction) shown in fig. 3, and the pressing force applied to the wire 3 by the elastic portion 22 is in a direction perpendicular to the paper surface shown in fig. 3 (i.e., a second direction). The right side cross-sectional view shown in fig. 4 shows that the pressing force applied to the wire 3 by the elastic portion 22 is in the Y direction (i.e., the second direction) shown in fig. 4, and the clamping force applied to the wire 3 by the wire clamping portion 21 is in the two directions (i.e., the first direction) perpendicular to the paper surface shown in fig. 4.

The elastic sheet of the structure shown in fig. 24 is an example in which the first direction and the second direction are parallel to each other. Referring to fig. 24, the clamping force applied to the wire 3 by the wire clamping portion 21 is in a bidirectional Z direction (i.e., a first direction), and the pressing force applied to the wire 3 by the elastic portion 22 is in a Z' direction (i.e., a second direction) as shown in fig. 24.

Of course, in the specific implementation, the first direction and the second direction may be any angle besides parallel or perpendicular, which is not limited in the embodiment of the present invention.

Further, as shown in fig. 5 to 9 and fig. 20 to 23, the spring plate 2 includes a fixing portion 23 forming a lead path 231; from one end to the other end of the lead wire channel 231, the fixing portion 23 is sequentially provided with a spring tongue 221 and at least one elastic clamping arm 211; wherein the spring tongue 221 is bent toward the conductive sheet 1 to form the elastic portion 22, and at least one of the elastic clip arms 211 is bent toward the lead path 231 to form the clip line portion 21.

Further, the fixing portion 23 may have a U-shaped structure, as shown in fig. 7, 8, and 20 to 23. The spring tongue 221 is arranged on one straight section of the U-shaped structure or on the middle section of the U-shaped structure connecting the two straight sections; the at least one resilient clip arm 211 is disposed on one or both of the straight sections of the U-shaped structure.

Several possible structures of the spring plate of the connection terminal are described in detail below with reference to specific drawings.

One possible solution is shown in fig. 7 and 8, wherein a first side 232 of the middle section 231 between two flat sections 233 of the U-shaped structure extends out of the spring tongue 221 in a first direction a; two second sides 234 of the two flat sections 233 of the U-shaped structure, which are connected to the first sides 232, extend out of the two elastic clamping arms 211 that are bent towards each other in the first direction a; one end of the side of the third side 235 of the U-shaped structure is a lead inlet of the lead channel, and the third side 235 is a side of the middle section 231 opposite to the first side 232.

The spring tongue 221 may be located in a space formed between the two elastic arms 211 (as shown in fig. 7) or may be located outside the two elastic arms 211 (as shown in fig. 8). These two kinds of realization structures, the shell fragment structure that fig. 7 shows is more small and exquisite, is favorable to realizing binding post's miniaturized design more.

By adopting the spring plate with the structure, each wire inserted into the wiring terminal needs to be correspondingly provided with one spring plate with the structure, so that the wiring terminal needs to be provided with a plurality of spring plates with the structure. As shown in fig. 1, each spring plate needs to be fixed inside the connecting terminal through a fixing structure. In one embodiment, as shown in fig. 6, 7 and 8, two opposite back sides of two straight sections of the U-shaped structure 23 are respectively provided with a fastening structure 24, and the elastic sheet is fastened in the insulating housing of the terminal through the fastening structure 24. Specifically, the snap feature 24 may be a raised snap die cut from a flat section of the U-shaped structure 23 as shown in fig. 6, 7 and 8.

As shown in fig. 20 to 22, at least one elastic clamping arm 211 is disposed on a straight section of the U-shaped structure 23 toward the inner side of the U-shaped structure 23, and the at least one elastic clamping arm 211 and another straight section of the U-shaped structure 23 form the wire clamping portion; the part of one flat section of the U-shaped structure 23, which is longer than the other flat section, is bent towards the inner side of the U-shaped structure 23 to form the spring tongue 221; a lead inlet 25 of the lead channel is provided in the middle section between the two straight sections of the U-shaped structure 23.

In practice, as shown in fig. 20, a flat section of the U-shaped structure 23 is punched with a resilient clip arm toward the inner side of the U-shaped structure 23, and the clip arm 211 and the other flat section of the U-shaped structure 23 form the clip line portion. Further, as shown in fig. 21, another straight section of the U-shaped structure 23 is provided with an arc-shaped section 26 recessed toward the inside of the U-shaped structure 23 at a position opposite to the elastic clamping arm 211 to enhance the clamping force of the wire clamping portion. Still further, fig. 22 shows an example of two elastic clamping arms arranged in an array, and two or more elastic clamping arms are arranged in sequence to effectively improve the clamping force of the wire clamping part compared with the scheme of arranging one elastic clamping arm. The arrangement manner and the arrangement number of the elastic clamp arms are not particularly limited in this embodiment.

As shown in fig. 23, at least one elastic clamping arm 211 is disposed on one flat section of the U-shaped structure 23 toward the inner side of the U-shaped structure 23, and at least one elastic clamping arm 211 is disposed on the other flat section of the U-shaped structure 23 toward the inner side of the U-shaped structure 23; the part of one flat section of the U-shaped structure 23, which is longer than the other flat section, is bent towards the inner side of the U-shaped structure 23 to form the spring tongue 221; a lead inlet 25 of the lead channel is provided in the middle section between the two straight sections of the U-shaped structure 23.

In a more specific embodiment, as shown in fig. 23, at least one of the elastic clamping arms 211 provided on two flat ends of the U-shaped structure 23 is the same in number and corresponding in position. Compared with the manner of arranging the two elastic clamping arms 211 on the same straight section of the U-shaped structure 23 shown in fig. 22, the structure shown in fig. 3 can effectively reduce the length of the spring sheet along the direction of the lead channel, which is beneficial to the miniaturization design of the wiring terminal.

The above description is mainly directed to the spring structure in the terminal. The following describes the terminal from the overall structure to describe the specific implementation structure of the terminal using the spring sheet provided in the above embodiment.

Fig. 1 and fig. 2 show schematic structural diagrams of a connection terminal according to an embodiment of the present invention. The connecting terminal provided by the embodiment comprises an insulating shell 4, a conductive sheet 1 and an elastic sheet 2. Wherein, the conductive sheet 1 and the elastic sheet 2 are both accommodated in the insulating housing 4. The elastic piece 2 is provided with an elastic part 22 and a wire clamping part 21; the elastic part 22 is arranged opposite to the conductive sheet 1, and the conductive wire is pressed between the conductive sheet 1 and the elastic part 22 by elastic deformation of the elastic part 22, so as to realize electrical connection between the conductive wire and the conductive sheet 1. The wire clamping portion 21 applies a clamping force to one side of the pressing position of the wire.

Specifically, the wire clamping portion 21 may be disposed upstream or downstream of the elastic portion 22 in the insertion direction of the wire. For example, the wire clamping portion 21 is disposed downstream of the elastic portion 22, as shown in fig. 3, the wire 3 passes through the elastic portion 22 through the wire passage and then extends into the wire clamping portion 21, the end portion of the wire is clamped by the wire clamping portion 21, and the middle portion of the wire 3 entering the insulating housing 4 is pressed between the conductive sheet 1 and the elastic portion 22 under the action of the elastic force of the elastic portion 22. Fig. 8 and 9 show an example in which the wire clamping portion 21 is disposed upstream of the elastic portion 22, that is, the wire passes through the wire clamping portion 21 through the wire passage and then extends between the elastic portion 22 and the conductive sheet 1; the end portion of the wire is pressed between the conductive sheet 1 and the elastic portion 22 by the elastic portion 22, and the wire enters the middle portion of the insulating housing 4 to be clamped by the wire clamping portion 21.

Further, as shown in fig. 1,2, and 10 to 13, the insulating housing 4 of the terminal is provided with a slot 411, and the conductive sheet 1 is pushed into the slot 411 along the wire insertion direction; the two opposite sides of the conductive sheet 1 are provided with limit stops 101, and the limit stops 101 are pushed into place when being propped against the bottom of the slot 411 during pushing.

As shown in fig. 1 and 2, the insulating housing 4 of the terminal includes a body case 41 having an opening; and a cover 42 fastened to one end of the opening. As shown in fig. 10 to 13, the insertion slot 411 is provided at a position of the body case 41 of the insulating housing 4 near the side wall plate 412. As shown in fig. 15 to 18, the connection terminal with a double-layer structure is characterized in that the insertion slot 411 is arranged in the middle of the main body shell 41 of the insulating shell 4, and the conductive sheet 1 inserted into the insertion slot 411 divides the insulating shell into an upper layer and a lower layer; elastic parts 22 of the spring pieces 2 accommodated in the upper and lower spaces of the insulating housing 4 are positioned at both sides of the conductive sheet 1 so as to press the conductive wires inserted through the upper and lower spaces against both sides of the conductive sheet 1.

Further, as shown in fig. 12 and 13, at least one isolation rib 413 is disposed in the body shell 41, and the at least one isolation rib 413 partitions the space in the body shell 41 into at least two mounting cavities for mounting the spring. For the connection terminal of the single-layer structure, a gap is left between one end of the at least one blocking rib 413 and a side wall plate of the body case 41 to form a slot 411 for inserting a conductive sheet. For the connection terminal of the double-layer structure, the middle portion of the at least one blocking rib 413 is truncated to form a slot 411 for inserting the conductive sheet (as shown in fig. 16, 17 and 18).

Still further, as shown in fig. 12 and 13, a stopper is further provided in each installation cavity of the body case 41. As shown in fig. 12 and 13, the limiting block 414 is disposed on a side of the inner wall of the installation cavity away from the slot 411. The limiting block 414 can limit the depth of inserting the elastic sheet into the installation cavity, namely, the elastic sheet with the structure shown in fig. 7, and the two elastic clamping arms 211 are provided with limiting steps 2110, so that the limiting steps 2110 are propped against the limiting block to be installed in place in the process of pushing the elastic sheet into the installation cavity.

Further, as shown in fig. 14, at least two wire inlet holes 421 are provided on the cover 42; a partition wall 423 is disposed between the at least two wire inlet holes 421. Specifically, the wire inlet hole 421 may be a stepped hole, the hole diameter is gradually reduced along the wire insertion direction, and two adjacent hole diameters are in conical surface transitional connection.

Further, as shown in fig. 2, the conductive sheet 1 is of a flat plate structure, or as shown in fig. 20, the conductive sheet 1 includes a straight plate portion and an inclined plate portion connected to the straight plate portion and inclined toward the elastic portion 221.

Fig. 10 to 13 are schematic structural views of a body case of the single-layer structure terminal. Fig. 14 shows a schematic structural view of a cover of a single-layer terminal. Fig. 15 shows an exploded schematic view of a connection terminal of a double-layered structure. The structure of the body case of the connection terminal having the double-layer structure shown in fig. 16 to 18 is schematically shown. Fig. 19 shows a schematic structural view of a cover body of a connection terminal of a double-layer structure.

As can be seen from fig. 15, the upper and lower layers of the connection terminal with the double-layer structure can share the same conductive sheet. That is, as shown in fig. 16 and 18, a slot 411 for inserting a conductive sheet may be provided between two layers of the body case of the two-layer structure of the connection terminal, and the elastic sheets of the upper and lower layers may be arranged in mirror symmetry with respect to the conductive sheet; as shown in fig. 15, the two layers of the same conductive sheet can effectively reduce the thickness of the connecting terminal, so that the structure is more compact and miniaturized. Correspondingly, the cover body of the wiring terminal with the double-layer structure is provided with a corresponding number of holes. As shown in fig. 19, the wire inlet hole may be provided with a long round hole, in which a partition rib is provided to partition the long round hole into two wire inlet holes of upper and lower layers.

What needs to be explained here is: the elastic sheet in this embodiment may be implemented by using the structure of the elastic sheet provided in the foregoing embodiment, and the specific implementation structure may refer to the corresponding content in the foregoing embodiment, which is not described in detail in this embodiment.

According to the technical scheme provided by the embodiment of the invention, the wire clamping part and the elastic part are additionally arranged on the elastic sheet, the elastic part and the conductive sheet are combined to act for compressing the wire once, and then the wire clamping part is used for clamping the wire for the second time, so that the clamping force can be effectively improved while the electric connection effect is ensured; according to the technical scheme provided by the embodiment of the invention, through structural improvement of the elastic sheet, the purposes that the elastic sheet has good conductivity and good clamping force can be realized without selecting the elastic sheet with high cost or adding new parts, the structure is simple, and the product is easier to miniaturize.

Fig. 25 is a schematic structural view of a connection terminal according to another embodiment of the present invention. As shown in the figure, the connection terminal provided in this embodiment includes: insulating housing 4, conducting strip 1 and shell fragment 2. Wherein, the conductive sheet 1 and the spring sheet 2 are arranged in the insulating shell 4. The spring plate 2 includes a wire clamping portion 21 and an elastic portion 22. The elastic part 22 is arranged opposite to the conductive sheet 1, and the conductive wire is pressed between the conductive sheet 1 and the elastic part 22 by elastic deformation of the elastic part 22, so as to realize electrical connection between the conductive wire and the conductive sheet 1. The wire clamping portion 21 applies a clamping force to one side of the pressing position of the wire.

Specifically, the spring plate 2 is a U-shaped structure 23. As shown in fig. 20, at least one elastic clamping arm 211 is punched out of a straight section of the U-shaped structure 23 toward the inner side of the U-shaped structure 23, and the at least one elastic clamping arm 211 and another straight section of the U-shaped structure 23 form the wire clamping portion 21. For another example, in the structure shown in fig. 21, one elastic clamping arm 211 is provided on one straight section of the U-shaped structure 23, but in order to improve the clamping force of the elastic clamping arm 211, a concave section is provided on the other straight section of the U-shaped structure at a position opposite to the elastic clamping arm 211. For another example, fig. 22 shows a structure in which two elastic clamping arms 211 are provided on one flat section of the U-shaped structure 23, and the two elastic clamping arms 211 respectively form clamping portions with the other flat section of the U-shaped structure. Of course, three or more elastic clamping arms can be further arranged on the straight section of the U-shaped structure, and the elastic clamping arms can be specifically set according to the actual size of the spring structure, and the embodiment is not particularly limited. For another example, as shown in fig. 23, a flat section of the U-shaped structure is punched with an elastic clamping arm 211 toward the inner side of the U-shaped structure, and another flat section of the U-shaped structure is punched with an elastic clamping arm 211 toward the inner side of the U-shaped structure, and two opposite elastic clamping arms 211 form the wire clamping portion. Compared with the mode that the first spring tongue is arranged on the straight section of one side of the U-shaped structure, the mode that the spring tongues are arranged on two sides is adopted, the clamping force provided by the spring tongue is larger, and the wiring terminal used in the application scene with higher clamping force requirements is easier to meet.

Correspondingly, the part of one straight section of the U-shaped structure 23, which is longer than the other straight section, is bent towards the inner side of the U-shaped structure 23 to form the elastic part 22; a lead inlet 25 of the lead channel is provided in the middle section between the two straight sections of the U-shaped structure 23.

Furthermore, the conductive sheet may have a flat structure, or may be provided with an inclined plane inclined to the elastic portion as shown in fig. 24, and the conductive wire may be bent toward the elastic portion under the guidance of the inclined plane, so that the elastic portion applies a pressing force to the conductive wire again, so that the electrical connection between the conductive wire and the conductive sheet is more stable and reliable.

In this embodiment, a plurality of elastic pieces may be disposed in the connection terminal, where each elastic piece corresponds to one wire; or as shown in fig. 25, the elastic piece 2 in the connecting terminal is in an integrated structure, that is, the elastic piece 2 is provided with a plurality of elastic parts 22 and at least one wire clamping part 21. Specifically, as shown in fig. 25, elastic parts 22 with the same number as the wire inlet holes are arranged on the elastic sheet 2, each elastic part 22 is arranged along the length direction of the elastic sheet 2, and gaps are reserved between each elastic part 22; the spring plate 22 is provided with a wire clamping part 21. The one wire clamping portion 21 includes an elongated resilient clamping arm traversing one flat section of the U-shaped structure and an elongated resilient clamping arm traversing the other flat section of the U-shaped structure. In specific implementation, the strip-shaped elastic clamping arms on the two straight sections can be obtained by adopting a punching and forming process. Of course, the spring plate may also be provided with wire clamping portions with the same number as the wire inlet holes, for example, the corresponding positions on the two flat surfaces of the U-shaped structure corresponding to each wire inlet position are provided with elastic clamping arms.

Further, the conductive sheet may be a whole conductive plate, or may have a structure as shown in fig. 25, that is, the conductive sheet 1 may be provided with a plurality of grooves to divide the conductive sheet into connection areas corresponding to different wires.

Further, as shown in fig. 25, the conductive sheet 1 includes a straight plate portion and an inclined portion connected to the straight plate portion and inclined to the elastic portion of the elastic piece. The inclined part is connected to one side edge of the straight plate part, and limit stops 101 are respectively arranged on two opposite side edges of the straight plate part, which are connected with the side edge. As shown in fig. 26, the conductive sheet 1 is inserted into the body case 41 of the insulating case of the terminal, and is mounted in place at a corresponding position in the body case 41 where the limit stopper 101 of the conductive sheet 1 abuts. The corresponding position in the body shell may be a groove bottom of the slot, or may be a limit fixing structure corresponding to the limit stop in the inner cavity of the body shell according to the shape and the size of the conductive sheet 1, which is not specifically limited in this embodiment, so long as a limit fixing effect can be achieved.

Fig. 25 and 26 show schematic structural views of the connection terminal of the single-layer structure. Fig. 27 and 28 show schematic structural views of the connection terminal of the double-layer structure. For the wiring terminal with a double-layer structure, each layer can be provided with the spring sheet shown in fig. 25, and of course, the spring sheet can also be a structure shown in fig. 27, namely, two spring sheets of the structure shown in fig. 25 are mirror images combined together to form an integral spring sheet (shown in fig. 27), and the two U-shaped structures are combined together with a certain gap in the middle. This gap may be determined according to the actual design space, for example, the gap may be 1.5-3 mm. Accordingly, as shown in fig. 27 and 28, the conductive sheet 1 of the terminal of the double-layered structure includes a standing plate 103 and conductive flat plates 102 located at opposite sides of the standing plate 103. The opposite sides of the vertical plate 103, on which the conductive plate 102 is disposed, are a first side and a second side, respectively. The other two opposite sides of the vertical plate 103 are respectively provided with a limit stop 101. The conductive sheet 1 of the structure shown in fig. 27 and 28 is inserted into the body case 41 of the insulating case of the terminal and is mounted in place at a corresponding position in the body case 41 where the limit stopper 101 of the conductive sheet 1 abuts. The corresponding position in the body shell may be a groove bottom of the slot, or may be a limit fixing structure corresponding to the limit stop in the inner cavity of the body shell according to the shape and the size of the conductive sheet 1, which is not specifically limited in this embodiment, so long as a limit fixing effect can be achieved.

Further, the insulating housing includes a body case 41 having an opening; and a cover 42 fastened to one end of the opening. For the wiring terminal with a single-layer structure, the elastic sheet 2 with an integrated structure shown in fig. 25 is adopted, and a plurality of grooves are formed in the conductive sheet 1; partition walls corresponding to the plurality of grooves can be arranged in the body shell of the corresponding insulating shell, the partition walls divide the space in the body shell into at least two chambers, and each chamber corresponds to one wire, namely one wire is electrically connected with the conducting strip in one chamber. The cover 42 is provided with a plurality of wire inlet holes, and each wire inlet hole corresponds to the wire inlet 25 formed in the elastic sheet U-shaped structure.

For the connection terminal of the double-layer structure, the spring piece 2 of the integrated structure shown in fig. 27 is adopted. A boss structure adapted to the U-shape (the shape formed by the vertical plate and the two conductive plates) of the conductive sheet 1 is disposed in the body shell 41 of the insulating housing, and the conductive sheet 1 is inserted into the boss structure, as shown in fig. 28. The connection part of the two mirror symmetry structures (namely, the two mirror symmetry structures of the elastic sheet in the structure shown in fig. 25) of the elastic sheet 2 is propped against the vertical plate 103 of the conducting sheet, a protrusion is arranged at a position corresponding to the connection part in the cover body 42 of the body shell 41 of the insulating shell, and after the cover body is buckled on the body shell, the protrusion extends into a recess formed at the connection part of the two mirror symmetry structures of the elastic sheet so as to limit and fix the elastic sheet.

According to the technical scheme provided by the embodiment of the invention, the wire clamping part and the elastic part are additionally arranged on the elastic sheet, the elastic part and the conductive sheet are combined to act for compressing the wire once, and then the wire clamping part is used for clamping the wire for the second time, so that the clamping force can be effectively improved while the electric connection effect is ensured; according to the technical scheme provided by the embodiment of the invention, through structural improvement of the elastic sheet, the purposes that the elastic sheet has good conductivity and good clamping force can be realized without selecting the elastic sheet with high cost or adding new parts, the structure is simple, and the product is easier to miniaturize.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims (12)

1. A wiring terminal is characterized by comprising a conductive sheet and an elastic sheet; wherein,

The elastic sheet is provided with a wire clamping part and an elastic part;

The conducting strip is arranged opposite to the elastic part, and the conducting wire is pressed between the conducting strip and the elastic part through elastic deformation of the elastic part;

The wire clamping part applies clamping force to one side of the pressing position of the wire;

Wherein, the spring plate comprises a fixing part forming a lead channel; the fixing part is sequentially provided with a spring tongue and at least one elastic clamping arm from one end to the other end of the lead channel; the spring tongue is bent towards the conductive sheet to form the elastic part, and at least one elastic clamping arm is bent towards the lead channel to form the wire clamping part;

the fixing part is of a U-shaped structure; the spring tongue extends from a first side edge of a middle section between two straight sections of the U-shaped structure to a first direction; two second side edges of the two straight sections of the U-shaped structure, which are connected with the first side edges, extend out of the two elastic clamping arms which are bent in opposite directions towards the first direction respectively; the spring tongue is positioned in a space formed between the two elastic clamping arms or is positioned outside the two elastic clamping arms;

Or at least one elastic clamping arm is arranged on one straight section of the U-shaped structure towards the inner side of the U-shaped structure, and the at least one elastic clamping arm and the other straight section of the U-shaped structure form the wire clamping part; a part of one flat section of the U-shaped structure, which is longer than the other flat section, is bent towards the inner side of the U-shaped structure to form the spring tongue;

The direction of the pressing force applied by the elastic part to the lead is the first direction.

2. A terminal as defined in claim 1, wherein,

One end of the side of the third side of the U-shaped structure is a lead inlet of the lead channel, and the third side is the side of the middle section opposite to the first side.

3. The terminal according to claim 1 or 2, wherein two opposite back sides of the two straight sections of the U-shaped structure are respectively provided with a fastening structure, and the spring plate is fastened in the insulating housing of the terminal through the fastening structure.

4. A terminal according to claim 1, wherein, when at least one of the resilient clip arms is provided on a flat section of the U-shaped structure inwardly of the U-shaped structure,

At least one elastic clamping arm is arranged on the other straight section of the U-shaped structure towards the inner side of the U-shaped structure.

5. The terminal of claim 4, wherein a wire inlet of the wire passage is provided in an intermediate section between two straight sections of the U-shaped structure.

6. The terminal of claim 4, wherein at least one of the resilient clip arms is provided on both flat ends of the U-shaped structure in the same number and in corresponding positions.

7. The terminal according to claim 1 or 2, further comprising an insulating housing, wherein the insulating housing is provided with a slot; the conducting strip is pushed into the slot along the wire inserting direction;

and limit stops are arranged on two opposite side edges of the conducting strip, and are pushed into place when being propped against the bottom of the slot in the pushing process.

8. The terminal of claim 7, wherein the slot is provided in a middle portion of the insulating housing, and the conductive sheet inserted into the slot divides the insulating housing into upper and lower layers;

Elastic parts of elastic sheets accommodated in the upper and lower layers of spaces of the insulating shell are positioned at two sides of the conducting strip so as to compress wires inserted through the upper and lower layers of spaces on two sides of the conducting strip.

9. The terminal of claim 7, wherein the insulating housing comprises: the body shell is provided with an opening, and the cover body is buckled at one end of the opening;

At least two wire inlet holes are formed in the cover body;

And a partition wall is arranged between the at least two wire inlet holes.

10. The terminal of claim 9, wherein the wire inlet hole is a stepped hole, the hole diameter is gradually reduced along the insertion direction of the wire, and conical surface transition connection is adopted between two adjacent hole diameters.

11. The terminal of claim 9, wherein at least one spacer rib is disposed within the body housing;

the at least one isolation rib isolates the space in the body shell from at least two mounting cavities for mounting the elastic sheets.

12. The terminal according to claim 1 or 2, wherein the conductive sheet is of a flat plate structure, or the conductive sheet includes a straight plate portion and an inclined plate portion connected to the straight plate portion and inclined toward the elastic portion.