Anti-loosening structure of bushing

Abstract

The utility model relates to the field of novel product structure of automobile parts, disclose a kind of anti-bush loosening structure, including bush inner tube, bush rubber and bush outer tube being sleeved in the outer periphery of bush inner tube, bush rubber is sleeved in the outer periphery of bush rubber, bush outer tube outer periphery wall forms first locating portion, further including the bracket with second locating portion matched with the first locating portion, first locating portion and second locating portion cooperation form anti-loosing structure, prevent bush overall axial loosening sliding, bracket is connected with automobile fixed structure. The utility model is through the first locating portion of bush outer tube and the cooperation of second locating portion and form anti-loosing structure, avoid bush loosening sliding, can effectively increase the pull-out force of bush, simple structure, and economic practical.

Description

Technical Field

[0001] This utility model relates to the field of novel product structures for automotive parts, specifically to a structure for preventing bushing loosening. Background Technology

[0002] With the rapid development of new energy vehicles, many automotive parts are being designed for lightweighting. Aluminum and plastics are now preferred materials for many bushings, significantly reducing vehicle weight and energy consumption. However, common plastic outer tube bushings have a critical problem: their pull-out force is generally very low, making them prone to being pulled out under heavy axial loads.

[0003] Therefore, there is an urgent need for a simple bushing fit structure to increase the pull-out force of the bushing. Utility Model Content

[0004] The purpose of this invention is to provide a structure to prevent bushings from loosening.

[0005] Compared with the prior art, this utility model provides a bushing loosening prevention structure, including a bushing inner tube, a bushing rubber sleeved on the outer periphery of the bushing inner tube, and a bushing outer tube sleeved on the outer periphery of the bushing rubber. The outer peripheral wall of the bushing outer tube forms a first positioning part, and it also includes a bracket with a second positioning part that cooperates with the first positioning part. The first positioning part and the second positioning part cooperate to form an anti-loosening structure to prevent the bushing from axially loosening and sliding. The bracket is connected to the vehicle fixing structure.

[0006] According to this utility model, the first positioning part is a bidirectional drafting structure disposed on the outer peripheral wall of the bushing outer tube.

[0007] According to this utility model, the second positioning part is a positioning through hole formed on the surface of the bracket, the bidirectional drafting structure is embedded and fitted with the positioning through hole, and the edge of the positioning through hole provides longitudinal obstruction for the bidirectional drafting structure.

[0008] According to this utility model, the bidirectional drafting structure is further arranged along the length of the outer wall of the bushing tube.

[0009] According to this utility model, the positioning through hole is an elongated through hole, and its length extension direction is consistent with the length direction of the bushing outer tube.

[0010] According to this utility model, the inner bushing tube and the bushing rubber are an integrated structure, and the bushing rubber and the outer bushing tube are an integrated structure.

[0011] According to this utility model, the inner tube of the bushing is bonded to the bushing rubber by a vulcanization process, and the bushing rubber is bonded to the outer tube of the bushing by a vulcanization process.

[0012] According to this utility model, the outer tube of the bushing further has the ability to shrink and deform.

[0013] Compared with the prior art, the beneficial effects of this utility model are: This utility model uses the first positioning part of the bushing outer tube and the second positioning part of the bracket to form an anti-detachment structure and an inverted structure, which prevents the bushing from loosening and sliding, effectively increasing the pull-out force of the bushing. The structure is simple, economical and practical.

[0014] This utility model sets the first positioning part as a bidirectional drafting structure, and the second positioning part is a matching waist-shaped elongated through hole. The protruding area of ​​the bidirectional drafting structure is embedded in the waist-shaped elongated through hole, and the edge of the waist-shaped elongated through hole provides longitudinal obstruction to the bidirectional drafting structure, thereby limiting the bidirectional drafting structure and effectively increasing the pull-out force of the bushing. Attached Figure Description

[0015] Figure 1a This is a schematic diagram of a bushing loosening prevention structure according to the present invention (excluding the bracket); Figure 1b for Figure 1a A magnified view of part A; Figure 2 This is a schematic diagram (including a bracket) of a bushing anti-loosening structure according to the present invention. Figure 3 This is a schematic diagram of the structure of the bracket of this utility model.

[0016] In the attached diagram, 1-inner bushing tube; 2-rubber bushing; 3-outer bushing tube; 31-bidirectional drafting structure; 4-bracket; 41-positioning through hole. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] like Figure 1a , 1b and Figure 2As shown, this application embodiment provides an anti-bushing loosening structure, including an inner bushing tube 1, an integrally fitted bushing rubber 2 around the outer periphery of the inner bushing tube 1, and an integrally fitted bushing outer tube 3 around the outer periphery of the bushing rubber 2. The outer peripheral wall of the outer bushing tube 3 forms a bidirectional pull-out structure 31, and also includes a bracket 4 forming an anti-loosening structure with the bidirectional pull-out structure 31. The bracket 4 is connected to the vehicle mounting structure. Through the combined action of the bracket 4 and the bidirectional pull-out structure 31, axial loosening and sliding of the bushing are prevented, effectively increasing the pull-out force of the bushing. The vehicle mounting structure can be a chassis suspension wall, control wall, or subframe.

[0019] like Figure 2 and 3 As shown, the bidirectional draft structure 31 is a structure located on the outer peripheral wall of the bushing outer tube 3, with a higher center and lower sides. Correspondingly, the bracket 4 has a positioning through hole 41 corresponding to the higher center part of the bidirectional draft structure 31. The higher center part is embedded in the positioning through hole 41 to fix the bracket 4 and the bidirectional draft structure 31. The highest point of the bidirectional draft structure 31 is located at the center of the bushing outer tube 3 along its length, and gradually decreases in height at both ends along the length of the bushing outer tube 3 until the lowest point. Here, the highest point is the position where the distance between the outer wall of the bidirectional draft structure 31 and the outer wall of the bushing outer tube 3 is the largest, and the lowest point is the position where the distance between the outer wall of the bidirectional draft structure 31 and the outer wall of the bushing outer tube 3 is the smallest. After the bushing outer tube 3 is pressed into the bracket 4, the high point area of ​​the bidirectional draft structure 31 cooperates with the positioning through hole 41 of the bracket, which can effectively improve the pull-out force of the bushing.

[0020] In this embodiment, the positioning through hole 41 is an elongated through hole, the length of which extends in the same direction as the length of the bushing outer tube 3, thereby increasing the volume of the bidirectional drafting structure 31 embedded in the positioning through hole 41 and thus improving the locking degree between the two.

[0021] In this embodiment, the inner bushing tube 1 and the bushing rubber 2 are bonded together by a vulcanization process, and the bushing rubber 2 is then bonded together with the outer bushing tube 3 by a vulcanization process. The outer wall of the outer bushing tube 3 is relatively thin, giving it a certain shrinkage and deformation capability.

[0022] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A bushing anti-loosening structure, comprising an inner bushing tube, a bushing rubber sleeve fitted around the outer periphery of the inner bushing tube, and an outer bushing tube fitted around the outer periphery of the bushing rubber, characterized in that, The outer peripheral wall of the bushing tube forms a first positioning part, and also includes a bracket with a second positioning part that cooperates with the first positioning part. The first positioning part and the second positioning part cooperate to form an anti-detachment structure to prevent the bushing from axially loosening and sliding. The bracket is connected to the vehicle fixing structure.

2. The anti-bushing loosening structure as described in claim 1, characterized in that, The first positioning part is a bidirectional drafting structure disposed on the outer peripheral wall of the bushing outer tube.

3. The anti-bushing loosening structure as described in claim 2, characterized in that, The second positioning part is a positioning through hole formed on the surface of the bracket. The bidirectional drafting structure is embedded and fitted with the positioning through hole, and the edge of the positioning through hole provides longitudinal obstruction for the bidirectional drafting structure.

4. The anti-bushing loosening structure as described in claim 2, characterized in that, The bidirectional drafting structure is arranged along the length of the outer wall of the bushing tube.

5. The anti-bushing loosening structure as described in claim 3, characterized in that, The positioning through hole is an elongated through hole, and its length extension direction is consistent with the length direction of the bushing outer tube.

6. The anti-bushing loosening structure as described in claim 1, characterized in that, The inner bushing tube and the bushing rubber are an integral structure, and the bushing rubber and the outer bushing tube are an integral structure.

7. The anti-bushing loosening structure as described in claim 6, characterized in that, The inner tube of the bushing is bonded to the bushing rubber through a vulcanization process, and the bushing rubber is bonded to the outer tube of the bushing through a vulcanization process.

8. The anti-bushing loosening structure as described in claim 1, characterized in that, The outer tube of the bushing has the ability to shrink and deform.

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