CN111520388A

CN111520388A - Fastening assembly

Info

Publication number: CN111520388A
Application number: CN201910107588.3A
Authority: CN
Inventors: 刘敏茜; 周伟伟
Original assignee: Beijing Treasure Car Co Ltd
Current assignee: Beijing Treasure Car Co Ltd
Priority date: 2019-02-02
Filing date: 2019-02-02
Publication date: 2020-08-11

Abstract

The invention discloses a fastening assembly, comprising: the first fastener is arranged on the first connecting piece and is suitable for penetrating through the second connecting piece, and a groove is formed in the first fastener; the second fastening piece is sleeved on the first fastening piece and matched with the groove to fasten the first connecting piece and the second connecting piece. From this, through setting up recess and the cooperation of second fastener that forms on first fastener to can be fastened by first connecting piece and second connecting piece, the recess encircles first fastener setting moreover, thereby makes the fastening effect of second fastener on first fastener better, and the atress distributes more evenly.

Description

Fastening assembly

Technical Field

The invention relates to the technical field of vehicles, in particular to a fastening assembly.

Background

At present, the fixed plastic part of installation on the automobile body panel beating adopts the fixed scheme of spiro union or joint more: a screw column structure is required to be arranged in the screw connection mode or a spring nut is arranged on the upper portion of dog house structure, and an electric screwdriver is adopted in the installation process; the card requires a dog house. If the installation space of some parts is limited, a small-sized screw post or dog house is required for design.

For the fixing scheme adopting the screw connection, firstly, the space is limited, secondly, the surface sink mark of the plastic part is easily generated when the size is increased in an inappropriate proportion, and at the moment, a screw is driven into the screw column by a proper smaller moment. However, the maneuverability in actual operation is not high, and the electric screwdriver with proper torque is not easy to match, so that the phenomenon of slipping is easily caused due to improper torque when a screw is driven, and the plastic part is not firmly installed.

For the fixing scheme adopting clamping, the clamping force is insufficient when the structural size of the dog house is small, and the plastic part is not firmly installed and is easy to lose efficacy.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art. The invention is based on the object of providing a fastening assembly which, while the fastening effect is stable, takes up less space.

A fastening assembly according to an embodiment of the invention comprises: the first fastener is arranged on the first connecting piece and is suitable for penetrating through the second connecting piece, and a groove is formed in the first fastener; the second fastening piece is sleeved on the first fastening piece and matched with the groove to fasten the first connecting piece and the second connecting piece.

According to the fastening assembly provided by the embodiment of the invention, the groove formed on the first fastening piece is matched with the second fastening piece, so that the first connecting piece and the second connecting piece can be fastened, and the groove is arranged around the first fastening piece, so that the fastening effect of the second fastening piece on the first fastening piece is better, and the stress distribution is more uniform. According to some embodiments of the invention, the first fastener comprises: the second fastener is suitable for being matched with the groove in the matching part under the guiding action of the guide part.

Optionally, the guide portion is configured to be removable after the mating portion is mated with the second fastener.

In some embodiments, the fitting portion is configured as a circular truncated cone structure, the cross-sectional area of the fitting portion gradually increases in a direction away from the first connecting piece, and a groove in snap fit with the second fastening piece is formed in the outer peripheral surface of the fitting portion.

Further, the guide portion is configured as a circular truncated cone structure, and a cross-sectional area of the guide portion gradually decreases in a direction away from the fitting portion.

Further, at least part of the second fastening piece is attached to the outer peripheral surface of the matching part.

According to some embodiments of the invention, the second fastener comprises: a limiting part, an anti-drop part and a clamping part; one end of the anti-falling part is arranged on the limiting part and the anti-falling part is attached to the outer peripheral surface of the matching part; the joint portion sets up the other end of anticreep portion and with the cooperation of recess joint.

Further, the limiting part is configured as an annular plate, the anti-dropping parts are multiple, and the anti-dropping parts are arranged on the limiting part at intervals along the circumferential direction.

According to some embodiments of the invention, the separation preventing portion is gradually close to a central axis of the stopper portion in a direction toward the second connector.

In some embodiments, the first connecting member is a plastic member, and the second connecting member is a sheet metal member.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic view of the engagement of a fastener assembly with first and second connectors according to an embodiment of the present invention (the guides not being removed);

FIG. 2 is another schematic illustration of the engagement of the fastener assembly with the first and second connectors according to an embodiment of the present invention (with the guides removed);

FIG. 3 is a schematic view of a first connector and a first fastener of the fastening assembly according to an embodiment of the invention;

FIG. 4 is an enlarged schematic view of area A of FIG. 3;

FIG. 5 is a schematic view of a second fastener of the fastening assembly according to an embodiment of the invention.

Reference numerals:

the fastening assembly 100, the first connector 200, the second connector 300,

the first fastening member 110, the guide portion 111, the fitting portion 112, the recess 1121,

the second fastener 120, the limiting part 121, the anti-dropping part 122 and the clamping part 123.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

A fastening assembly 100 according to an embodiment of the present invention is described below with reference to fig. 1-5.

As shown in fig. 1 to 5, a fastening assembly 100 according to an embodiment of the present invention includes: a first fastener 110 and a second fastener 120, the first fastener 110 being disposed on the first connector 200 and adapted to pass through the second connector 200, the first fastener 110 having a recess 1121; the second fastening member 120 is disposed on the first fastening member 110 and engaged with the recess 1121 to fasten the first connector 200 and the second connector 300.

According to the fastening assembly 100 of the embodiment of the invention, the groove 1121 formed on the first fastening member 110 is matched with the second fastening member 120, so that the first connecting member 200 and the second connecting member 300 can be fastened, and the groove 1121 is arranged around the first fastening member 110, so that the fastening effect of the second fastening member 120 on the first fastening member 110 is better, and the stress distribution is more uniform.

In the particular embodiment shown in fig. 4, the first fastener 110 includes: the guide portion 111 and the fitting portion 112, a groove 1121 is provided on the fitting portion 112, and the second fastening member 120 is adapted to be fitted with the groove 1121 on the fitting portion 112 under the guiding action of the guide portion 111. Therefore, on one hand, the second fastening member 120 is more easily and conveniently mounted on the first fastening member 110 by the guiding of the guiding portion 111, and on the other hand, the stability of the connection between the first fastening member 110 and the second fastening member 120 is improved by the annular groove 1121, so that the fixing effect of the first connecting member 200 and the second connecting member 300 under the action of the fastening assembly 100 is better.

As shown in fig. 4, the guide portion 111 is configured to be removable after the mating portion 112 is mated with the second fastener 120. In this way, the guide portion 111 can be separated from the mating portion 112 by an axial force or a radial force, thereby achieving the purpose of reducing the space occupation of the fastening assembly 100. Therefore, on the premise of facilitating the fastening of the first connector 200 and the second connector 300, the operation of separating the matching part 112 from the guide part 111 is simpler and more convenient, and the operability of the fastening assembly 100 of the embodiment in the assembling process is improved.

It can be understood that: a first fastening member 110 and a second fastening member 120, the first fastening member 110 being disposed on the first connector 200, the first fastening member 110 being adapted to pass through the second connector 300 and the first fastening member 110 including: a guide portion 111 and a fitting portion 112; the second fastening member 120 is adapted to cooperate with the cooperating portion 112 under the guiding action of the guiding portion 111 to fasten the first connector 200 with the second connector 300, wherein the guiding portion 111 is removable after the second fastening member 120 is completely cooperated with the cooperating portion 112.

Specifically, the first fastener 110 is disposed on the first connector 200 of the first connector 200 and the second connector 300 to be fastened or assembled, the second fastener 120 is provided with a through hole suitable for the first fastener 110 to pass through, so that the first connector 200 is located on one side of the second connector 300, at least a portion of the first fastener 110 passes through the second connector 300, the second fastener 120 is mounted on the matching portion 112 of the first fastener 110 under the guiding action of the guide portion 111 on the other side of the second connector 300, and is matched with the matching portion 112 to fixedly connect the first connector 200 and the second connector 300, so that after the second fastener 120 is assembled on the first fastener 110, the guide portion 111 can be rotated or pulled, so that the guide portion 111 is separated from the matching portion 112.

Therefore, the second fastening member 120 and the first fastening member 110 formed on the first connecting member 200 are arranged to replace the existing screw fastening and clamping fastening schemes, on one hand, a stud structure or dog house structure is not required to be arranged on the first connecting member 200, so that screw fastening or clamping fastening is not required, and the first connecting member 200 and the second connecting member 300 fastened by the fastening assembly 100 of the embodiment are connected more firmly and reliably; on the other hand, the guide portion 111 of the first fastening member 110 is removable, so that the space occupation of the fastening assembly 100 can be effectively reduced, and the fastening assembly is suitable for being arranged and used in a limited space area.

It should be noted that the fastening assembly 100 of the present embodiment is particularly suitable for fastening the first connecting member 200 and the second connecting member 300 on a limited space region, and when the limited space region is fixed, if the screw fastening or the snap fastening in the prior art is still adopted, the stud or dog house is designed to be smaller due to the limitation of space, and the smaller stud may cause that the screw engaged with the stud cannot provide a sufficient fastening torque; the smaller doghouse may result in a smaller size of the clamping structure formed on the first connector 200, and thus the clamping force of the clamping between the first connector 200 and the second connector 300 is too small.

In the specific embodiment shown in fig. 3 and 4, the fitting portion 112 is configured as a circular truncated cone structure, and the cross-sectional area of the fitting portion 112 gradually increases in a direction away from the first connector 200, wherein a groove 1121 for snap-fitting with the second fastener 120 is provided on the outer circumferential surface of the fitting portion 112. In other words, the fitting portion 112 gradually extends from the end connected with the first connector 200 toward the guide portion 111 and gradually increases in cross-sectional area, and a groove 1121 for engaging with the second fastening member 120 is provided on an outer circumferential surface of the fitting portion 112.

Thus, in one aspect, the second fastening member 120 can be engaged with the groove 1121, so as to fasten the first connector 200 and the second connector 300; on the other hand, the cross-sectional area of the fitting portion 112 gradually increases on the premise that the structural strength of the first fastening member 110 can be improved, so that at least part of the second fastening member 120 can be in interference fit with the fitting portion 112 or fit with each other, and therefore loosening or shaking of the fastened first connecting member 200 relative to the fastened second connecting member 300 can be reduced, and the connection stability of the first connecting member 200 and the second connecting member 300 is further improved.

As shown in fig. 1 to 4, the guide portion 111 is configured in a circular truncated cone structure, and the cross-sectional area of the guide portion 111 gradually decreases in a direction away from the fitting portion 112. Thus, the guide portion 111 may provide a guide to the second fastening member 120 during the assembly of the second fastening member 120 on the first fastening member 110, so that the connection between the first fastening member 110 and the second fastening member 120 is simpler and more convenient, further improving the workability of the installation of the fastening assembly 100.

Further, at least a portion of the second fastening member 120 is attached to the outer circumferential surface of the fitting portion 112. Therefore, the connection between the first fastening piece 110 and the second fastening piece 120 is more stable, and the gap between the two is smaller, so that the first connecting piece 200 and the second connecting piece 300 after fastening can be prevented from loosening or shaking.

In the particular embodiment shown in fig. 5, the second fastener 120, according to some embodiments of the present invention, includes: a stopper 121, a stopper 122, and a locking portion 123; one end of the retaining part 122 is arranged on the limiting part 121, and the retaining part 122 is attached to the outer peripheral surface of the matching part 112; clamping portion 123 is disposed at the other end of anti-slip portion 122 and is in clamping fit with recess 1121.

Therefore, after the first connector 200 and the second connector 300 are fastened by the fastening assembly 100, the anti-falling part 122 is in snap fit with the groove 1121; the anti-separation portion 122 is attached to the outer peripheral surface of the fitting portion 112, and when the first connecting member 200 moves in a direction away from the second connecting member 300 under the action of external force, the limiting portion 121 is adapted to stop the second connecting member 300, so that the fastening effect of the first connecting member 200 and the second connecting member 300 is improved, the first connecting member 200 and the second connecting member 300 can be effectively prevented from shaking and loosening, and the service life of the fastening assembly 100 can be prolonged.

As shown in fig. 5, the stopper portion 121 is configured as an annular plate, the retaining portion 122 is plural, and the plural retaining portions 122 are provided on the stopper portion 121 at intervals in the circumferential direction.

Therefore, the retaining portions 122 are substantially annular, and the clamping portions 123 at the other ends of the retaining portions 122 are also annular, so that the matching effect between the clamping portions 123 and the grooves 1121 can be improved, the stress between the clamping portions 123 is more uniform, and the retaining portions 122 can be more attached to the matching portion 112; moreover, the gaps between the anti-slip parts 122 can reduce the material usage of the second fastening member 120, thereby reducing the material cost of the fastening assembly 100.

Alternatively, the disengagement preventing portion 122 is an elastic member, and the disengagement preventing portion gradually approaches the central axis of the stopper portion 121 in a direction toward the second connector 300. Therefore, the anti-dropping part 122 configured as an elastic member is elastically stopped against the matching part 112, so that the connection effect of the first fastening piece 110 and the second fastening piece 120 is improved, and the second fastening piece 120 is more simply and conveniently mounted on the first fastening piece 110.

In some embodiments, the first connecting member 200 is a plastic member, and the second connecting member 300 is a sheet metal member.

That is to say, the fastening assembly 100 of the embodiment is suitable for connection between a plastic part and a sheet metal part, and can effectively reduce the space occupation after the first connecting piece 200 and the second connecting piece 300 are connected, and improve the connection stability of the two.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.

In the description of the present invention, "the first feature" and "the second feature" may include one or more of the features.

In the description of the present invention, "a plurality" means two or more.

In the description of the present invention, the first feature being "on" or "under" the second feature may include the first and second features being in direct contact, and may also include the first and second features being in contact with each other not directly but through another feature therebetween.

In the description of the invention, "above", "over" and "above" a first feature in a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above 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.

While embodiments of the 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 to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A fastening assembly (100) comprising:

a first fastening piece (110), wherein the first fastening piece (110) is arranged on the first connecting piece (200) and is suitable for penetrating through the second connecting piece (300), and a groove (1121) is arranged on the first fastening piece (110);

a second fastening member (120), wherein the second fastening member (120) is suitable for being sleeved on the first fastening member (110) and matched with the groove (1121) to fasten the first connecting piece (200) and the second connecting piece (300).

2. The fastening assembly (100) of claim 1 wherein the first fastener (110) comprises: the fastener comprises a guide portion (111) and a matching portion (112), wherein a groove (1121) is formed in the matching portion (112), and the second fastener (120) is suitable for being matched with the groove (1121) in the matching portion (112) under the guiding action of the guide portion (111).

3. The fastening assembly (100) of claim 2 wherein the guide portion (111) is configured to be removable after the mating portion (112) is mated with the second fastener (120).

4. The fastening assembly (100) according to claim 2, wherein the engaging portion (112) is configured as a circular truncated cone structure, the cross-sectional area of the engaging portion (112) is gradually increased in a direction away from the first connector (200), and wherein a groove (1121) for snap-fitting with the second fastener (120) is provided on an outer circumferential surface of the engaging portion (112).

5. The fastening assembly (100) according to claim 3, wherein the guide portion (111) is configured as a circular truncated cone structure, and a cross-sectional area of the guide portion (111) is gradually reduced in a direction away from the mating portion (112).

6. The fastening assembly (100) of claim 3 wherein at least a portion of the second fastener member (120) conforms to an outer peripheral surface of the mating portion (112).

7. The fastening assembly (100) of claim 6 wherein the second fastener (120) comprises:

a stopper (121);

a retaining part (122), one end of the retaining part (122) is arranged on the limiting part (121), and the retaining part (122) is attached to the outer peripheral surface of the matching part (112);

joint portion (123), joint portion (123) set up anticreep portion (122) the other end and with recess (1121) joint cooperation.

8. The fastening assembly (100) according to claim 7, wherein the stopper portion (121) is configured as an annular plate, the retaining portion (122) is plural, and the plurality of retaining portions (122) are provided on the stopper portion (121) at intervals in a circumferential direction.

9. The fastening assembly (100) according to claim 7, wherein the coming-off prevention portion (122) is gradually close to the central axis of the stopper portion (121) in a direction toward the second connector (300).

10. The fastening assembly (100) of claim 1 wherein the first connector (200) is a plastic piece and the second connector (300) is a sheet metal piece.