CN205871649U - Automobile swinging arm bush with hang swing arm assembly - Google Patents

Abstract

The utility model relates to the technical field of automobile suspension systems, in particular to an automobile swing arm bushing and a suspension upper swing arm assembly; A first rubber layer is provided between the pipe and the middle pipe, and a second rubber layer is provided between the middle pipe and the outer pipe; a first depression is provided on the area where the outer wall of the inner pipe contacts the first rubber layer, and the first depression The part extends toward the central axis of the automobile swing arm bushing. The suspension upper swing arm assembly includes a swing arm body, bushes are provided at both ends of the swing arm body, and a ball joint assembly is provided at the middle of the swing arm body; the automobile swing arm bush and The suspension upper swing arm assembly takes up less space and is light in weight, and the bushing is not easy to crack, which improves the fatigue life of the bushing, thereby improving the safety of the vehicle.

Description

Automotive swing arm bushing and suspension upper swing arm assembly

technical field

The utility model relates to the technical field of automobile suspension systems, in particular to an automobile swing arm bushing and a suspension upper swing arm assembly.

Background technique

The main function of the automobile suspension system is to buffer and absorb the vibration from the wheels, and to transmit the driving force and braking force. The automobile suspension system includes many components, among which the automobile suspension swing arm device is its core component. The car suspension swing arm device usually plays the role of guiding, supporting, and shock absorption, and is related to the stability of driving. When driving on uneven roads, it needs to generate action force and reaction force to control the driving direction and ensure the smooth driving of the vehicle.

The stamped part automobile suspension upper swing arm assembly of the prior art includes a swing arm body, a spherical hinge, and a bush. The body of the swing arm is a stamping part, one end of the body of the swing arm is provided with a boss, and a ball joint is installed in the middle of the boss, and the ball joint is connected with the body of the swing arm in a split type; the other end of the body of the swing arm is stamped with two holes on both sides, and the bushing It is press-fitted in two holes through interference fit, wherein the bushing is a bushing with two skeletons, the skeleton includes an inner tube and an outer tube, and a layer of rubber is vulcanized between the inner and outer tubes of the bushing. However, the prior art has the following technical problems: first, due to the relatively large swing angle of the bushing, the existing two-frame bushing structure is prone to cracking, which affects the fatigue life of the bushing, thereby affecting the safety of the vehicle; It is because the body of the upper swing arm assembly is a stamping part, the swing arm body takes up a lot of space, and the weight of the body is relatively large, which is not conducive to the lightweight of the upper swing arm assembly.

Utility model content

The purpose of the utility model is to provide an automobile swing arm bushing and a suspension upper swing arm assembly, so as to overcome the problem that the bush of the suspension upper swing arm assembly in the prior art is prone to cracking and affects the safety of the vehicle.

In order to achieve the above purpose, the utility model provides an automobile swing arm bushing, which includes an inner tube, an intermediate tube and an outer tube arranged sequentially from the inside to the outside, and a first rubber layer is arranged between the inner tube and the intermediate tube. A second rubber layer is provided between the intermediate pipe and the outer pipe; a first recess is provided on the area where the outer wall of the inner pipe contacts the first rubber layer, and the first recess faces toward the The central axis direction of the automobile swing arm bushing extends.

As a preferred solution, in order to further increase the contact area between the intermediate pipe and the second rubber layer, a second recess is provided on the area where the outer wall of the intermediate pipe contacts the second rubber layer, and the second recess faces toward The automobile swing arm bushing extends in the direction of the central axis.

As a preferred solution, in order to further increase the contact area between the inner wall of the intermediate pipe and the first rubber layer, so that the first rubber layer is closely matched with the intermediate pipe, the inner wall of the intermediate pipe is in contact with the first rubber layer. A protruding part, the protruding part extends toward the central axis of the automobile swing arm bushing.

As a preferred solution, considering that the middle pipe and the outer pipe can strengthen the inner pipe so that the overall strength of the bushing is high, the axial lengths of the inner pipe, the middle pipe and the outer pipe are successively reduced.

The utility model provides a suspension upper swing arm assembly, which includes a swing arm body, the two ends of the swing arm body are provided with the above-mentioned bushings, and the middle part of the swing arm body is provided with a ball joint assembly.

As a preferred solution, considering that while ensuring the strength of the swing arm body, it helps to reduce the weight of the swing arm body and is beneficial to the weight reduction of the swing arm body, the swing arm body is made of forged aluminum.

As a preferred solution, in order to help reduce the weight of the swing arm body according to the law of force, the cross section of the swing arm body is in a "convex" shape.

As a preferred solution, in order to ensure the tight connection between the bush and the swing arm body for ease of use, the bush is in interference fit with the swing arm body.

As a preferred solution, considering the stability of the connection between the ball joint assembly and the swing arm body, the use of the ball joint assembly is convenient, and the ball joint assembly is integrally formed with the swing arm body.

As a preferred solution, in order to ensure that the ball joint assembly is easy to use, the ball joint assembly includes a housing, a ball stud, a ball seat and a dust cover; the ball stud includes a ball stud and a The ball head is installed in the ball seat, and the ball seat is installed in the housing; one end of the dust cover is connected to the housing, and the other end is connected to the ball pin The columns are connected.

The utility model provides an automobile swing arm bushing and a suspension upper swing arm assembly, which has the following technical effects: by setting the three-frame bushing structure of the inner pipe, the middle pipe and the outer pipe, and the inner pipe and the middle There is a first rubber layer between the tubes, a second rubber layer between the middle tube and the outer tube, and a first depression on the outer wall of the inner tube, which helps to increase the contact area between the inner tube and the first rubber layer , while ensuring the radial stiffness of the bushing, it reduces the torsional stiffness of the bushing, solves the problem that the bushing with a large swing angle is prone to cracking, further improves the fatigue life of the bushing, and thus improves the safety of the vehicle.

Description of drawings

Fig. 1 is the sectional view of the bushing of the embodiment of the present utility model;

Fig. 2 is the perspective view of the suspension upper swing arm assembly of the embodiment of the present utility model;

Fig. 3 is the front view of the suspension upper swing arm assembly of the embodiment of the present utility model;

Fig. 4 is the D-D sectional view of Fig. 3;

Fig. 5 is a cross-sectional view of the ball joint assembly of the suspension upper swing arm assembly according to the embodiment of the present invention.

In the figure: 1-swing arm body, 11-first connecting part, 12-second connecting part, 13-third connecting part, 2-ball hinge assembly, 3-bush hole, 4-bush, 21-shell Body, 22-cover plate, 23-inner ball seat, 24-outer ball seat, 25-skeleton, 26-clamp, 27-dust cover, 28-ball pin, 281-ball pin, 282-ball head , 41-inner tube, 411-first depression, 42-first rubber layer, 43-middle tube, 431-second depression, 432-protrusion, 44-second rubber layer, 45-outer tube.

detailed description

Below in conjunction with accompanying drawing and embodiment the technical scheme of the utility model is further described:

As shown in Figure 1: the utility model provides an automobile swing arm bushing, comprising an inner tube 41, an intermediate tube 43 and an outer tube 45, a first rubber layer 42 is arranged between the inner tube 41 and the intermediate tube 43, and the intermediate tube 43 and the outer tube 45 are provided with a second rubber layer 44; the area where the outer wall of the inner tube 41 is in contact with the first rubber layer 42 is provided with a first concave portion 411, and the first concave portion 411 faces the automobile swing arm bushing extending in the direction of the central axis. By setting the inner tube 41, the middle tube 43 and the outer tube 45, and the outer wall of the inner tube 41 is provided with a first recess 411 to increase the contact area between the inner tube 41 and the first rubber layer 42, thereby further helping to prevent lining. The sleeve 4 is cracked. This structure not only ensures the radial stiffness of the sleeve 4, but also reduces the torsional stiffness of the sleeve 4, solves the problem that the sleeve 4 with a large swing angle is prone to cracking, and further improves the fatigue life of the sleeve 4. .

Preferably, the area where the outer wall of the intermediate pipe 43 is in contact with the second rubber layer 44 is provided with a second recessed portion 431, and the second recessed portion 431 extends toward the central axis of the automobile swing arm bushing, further increasing the contact between the intermediate pipe 43 and the second rubber layer 44. The contact area of the second rubber layer 44 . In addition, the area where the inner wall of the intermediate pipe 43 is in contact with the first rubber layer 42 is provided with a raised portion 432, and the raised portion 432 extends towards the central axis of the automobile swing arm bushing. Preferably, the raised portion 432 is facing The second concave portion 431 is provided to further increase the contact area between the inner wall of the intermediate tube 43 and the first rubber layer 42 , so that the first rubber layer 42 and the intermediate tube 43 are tightly fitted. In addition, considering that the middle pipe 43 and the outer pipe 45 can strengthen the inner pipe 41 so that the overall strength of the bushing 4 is high, the axial lengths of the inner pipe 41 , the middle pipe 43 and the outer pipe 45 are successively reduced. In addition, it is worth noting that the first rubber layer 42 can be set between the inner tube 41 and the middle tube 43 by vulcanization, and the second rubber layer 44 can be set between the middle tube 43 and the outer tube 45 by vulcanization. The technological process of network polymers formed by molecules through cross-linking.

As shown in Figure 2-Figure 5: the utility model provides a suspension upper swing arm assembly, including a swing arm body 1, the two ends of the swing arm body 1 are provided with the above-mentioned bushing 4; Ball joint assembly 2 is arranged.

Specifically, referring to FIG. 2 and FIG. 3 , the swing arm body 1 in this embodiment is in a “U” shape, so that the overall performance of the swing arm body 1 is good and the use is more convenient. The swing arm body 1 includes a first connecting portion 11 , the second connecting part 12 and the third connecting part 13, the first connecting part 11 and the second connecting part 12 are arranged at both ends of the swing arm body 1, the third connecting part 13 is arranged at the middle part of the swing arm body 1, the first The positional relationship between the connecting part 11, the second connecting part 12 and the third connecting part 13 is distributed in a triangle, and the above-mentioned bushing 4 is arranged on the first connecting part 11 and the second connecting part 12, and the third connecting part 13 is provided with Ball joint assembly 2. It is worth noting that the first connecting portion 11 and the second connecting portion 12 are located at two free ends of the “U”-shaped swing arm body 1 .

In addition, the swing arm body 1 is made of forged aluminum parts. The material and structure of the forged aluminum parts can not only ensure the strength of the swing arm body 1, but also help to reduce the weight of the swing arm body 1, which is beneficial to the weight reduction of the swing arm body 1. In addition, referring to FIG. 3 and FIG. 4 , the cross section of the swing arm body is in a "convex" shape, which further helps to realize the weight reduction of the swing arm body according to the law of force.

In addition, the bushing 4 has an interference fit with the swing arm body 1, specifically, the first connecting portion 11 and the second connecting portion 12 are both processed with a bushing hole 3, and the bushing 4 and the bushing hole 3 have an interference fit, so that The bushing 4 is closely connected with the bushing hole 3, which is convenient for use. It is worth noting that the first connecting part 11 and the second connecting part 12 can be respectively provided with a first bushing hole and a second bushing hole, and the sizes and specifications of the first bushing hole and the second bushing hole are exactly the same. For example, the first bushing hole and the second bushing hole are unified into bushing hole 3. In addition, the above-mentioned bushing 4 is respectively press-fitted on the first bushing hole and the second bushing hole through interference fit, that is, the bushing The outer tube 45 of the sleeve 4 is interference fit with the first bushing hole and the second bushing hole respectively. In addition, the ball joint assembly 2 and the swing arm body 1 are integrally formed, so that the connection between the ball joint assembly 2 and the swing arm body 1 is more stable, and the use of the ball joint assembly 2 is convenient.

It is worth noting that the ball joint assembly 2 can adopt existing conventional technology. Specifically, as shown in FIG. 5 , the ball joint assembly 2 includes a housing 21, a ball stud 28, a ball socket and a dust cover 27; the ball stud 28 includes a ball stud 281 and a ball at one end of the ball stud 281. The head 282 and the ball head 282 are installed in the ball head seat, and the ball head seat is installed in the housing 21 ; In addition, the ball seat also includes an inner ball seat 23 and an outer ball seat 24 connected with the inner ball seat 23, one side of the inner ball seat 23 is connected with the ball head 282, and the other side is connected with the outer ball seat 24, and the outer ball seat 24 is located between the housing 21 and the inner ball seat 23 . In addition, a cover plate 22 may also be provided on the housing 21 to play the role of connection and protection. A groove can also be provided on the housing 21 , and the dust cover 27 can be fixed in the groove by a clamp 26 , so as to facilitate the stable connection of the dust cover 27 and the housing 21 . It is worth noting that a frame 25 is provided at the joint between the ball pin 281 and the ball head 282 , one end of the frame 25 is in contact with the housing 21 , and the other end is connected with the inner wall of the dust cover 27 .

The automobile swing arm bush and the suspension upper swing arm assembly adopting the technical solution of the utility model, by setting a three-skeleton bush structure, this structure ensures the radial stiffness of the bush 4 and reduces the torsional stiffness of the bush 4 , solve the problem that the bushing 4 with a large swing angle is prone to cracking, further improve the fatigue life of the bushing 4, thereby improving the safety of the vehicle, and further, the swing arm body 1 is set as a forged aluminum part, ensuring that the swing arm body 1 strength, it helps to reduce the weight of the swing arm body 1, which is beneficial to the weight reduction of the swing arm body 1.

The above description is only the preferred embodiment of the utility model, it should be pointed out that for those of ordinary skill in the art, without departing from the technical principle of the utility model, some improvements and replacements can also be made. And replacement should also be regarded as the protection scope of the present utility model.

Claims (10)

1. a bush of swing arm of automobile, it is characterised in that: include by interior inner tube, intervalve and the outer tube set gradually outward, institute State and between inner tube and intervalve, be provided with the first rubber layer, between described intervalve and described outer tube, be provided with the second rubber layer；Described The region that the outer wall of inner tube contacts with described first rubber layer is provided with the first depressed part, and described first depressed part is towards described vapour The central axis direction of car bush of swing arm extends.

Bush of swing arm of automobile the most according to claim 1, it is characterised in that: the outer wall of described intervalve and described second rubber The region of glue-line contact is provided with the second depressed part, and described second depressed part is towards the central axis direction of described bush of swing arm of automobile Extend.

Bush of swing arm of automobile the most according to claim 2, it is characterised in that: the inwall of described intervalve and described first rubber The region of glue-line contact is provided with lobe, and described lobe extends towards the central axis direction of described bush of swing arm of automobile.

Bush of swing arm of automobile the most according to claim 3, it is characterised in that: said inner tube, intervalve and outer tube axial Length is sequentially reduced.

5. hang a top link assembly, including swing arm body, it is characterised in that: the two ends of described swing arm body are provided with such as right Requiring the lining described in any one of 1-4, the middle part of described swing arm body is provided with ball pivot assembly.

Suspension top link assembly the most according to claim 5, it is characterised in that: described swing arm body is set to wrought aluminium part.

Suspension top link assembly the most according to claim 6, it is characterised in that: the cross section of described swing arm body is in " convex " Shape.

8. according to the suspension top link assembly described in any one of claim 5-7, it is characterised in that: described lining and described swing arm Body interference fit.

9. according to the suspension top link assembly described in any one of claim 5-7, it is characterised in that: described ball pivot assembly is with described This body by integral forming of swing arm.

Suspension top link assembly the most according to claim 9, it is characterised in that: described ball pivot assembly includes housing, bulb Pin, ball cup and dust cover；

Described ball stud includes ball pin post and is positioned at the bulb of described ball pin post one end, and described bulb is installed on described ball cup In, described ball cup is arranged in described housing；One end of described dust cover is connected with described housing, the other end and described ball pin Post is connected.