CN216833096U

CN216833096U - Connection structure of swing arm assembly and sub vehicle frame

Info

Publication number: CN216833096U
Application number: CN202220245621.6U
Authority: CN
Inventors: 肖溦; 苏忠; 刘正兴; 牟俊围
Original assignee: Chongqing Changan New Energy Automobile Technology Co Ltd
Current assignee: Deep Blue Automotive Technology Co ltd
Priority date: 2022-01-30
Filing date: 2022-01-30
Publication date: 2022-06-28
Anticipated expiration: 2032-01-30

Abstract

The utility model relates to a connection structure of swing arm assembly and sub vehicle frame, including swing arm assembly and the sub vehicle frame of being connected rather than the cooperation, characterized by: the swing arm assembly is composed of a bayonet-shaped swing arm framework, two swing arm sleeves and two swing arm bushings, wherein the two swing arm bushings are coaxially arranged and fixedly connected to bayonets of the swing arm framework, and the two swing arm bushings are respectively matched in the two swing arm bushings; one side of the auxiliary frame is provided with two matching parts, and the two swing arm bushings are matched with the two matching parts and connected to the auxiliary frame through bolts and nuts. This structure can satisfy the simple and easy requirement of whole car assembly when satisfying sound rigidity.

Description

Connection structure of swing arm assembly and sub vehicle frame

Technical Field

The utility model relates to an automobile chassis suspension system, concretely relates to connection structure of swing arm assembly and sub vehicle frame.

Background

The swing arm of the automobile chassis suspension is used as a structural connecting component for realizing the chassis and the body-in-white, bears transverse and longitudinal impact transmitted from a road surface, and needs to have enough rigidity strength on one hand and to relax the impact on the other hand so as to reduce the influence of the impact on the comfort of members.

At present, there are two common swing arm mounting structures: a double-point axial forced assembly type and a double-point axial sliding assembly type. The double-point forced assembly structure provides better dynamic and static performance parameters, and the double-point sliding assembly structure provides better assembly conditions. Therefore, it is necessary to develop a connection structure of a swing arm assembly and a subframe, which can provide good dynamic and static performance parameters and good assembly conditions.

CN 210941221U the utility model discloses a "swing arm and sub vehicle frame connection structure", including swing arm, sub vehicle frame, be equipped with front bush and back bush in the swing arm, the swing arm through front bush and back bush with the sub vehicle frame rotates to be connected, install the installing support on the back bush, installing support and sub vehicle frame fixed connection; the front bushing and the rear bushing can absorb impact load brought by the wheel; when the volume of the rear bushing is increased, the size of the connecting part of the mounting bracket and the rear bushing is only required to be correspondingly increased, and the size of the connecting part of the mounting bracket and the auxiliary frame is not changed, so that the size of the auxiliary frame is not influenced; the problem of among the prior art, because back bush stopper is in sub vehicle frame, when the back bush volume increased, sub vehicle frame's whole thickness and quality all need corresponding increase, have influenced vehicle chassis overall arrangement is solved.

CN 210211933U discloses a swing arm bushing and a swing arm bushing assembly. This swing arm bush is used for connecting the suspension swing arm and the sub vehicle frame of vehicle, the suspension swing arm includes the swing arm sleeve pipe of metal, the swing arm bush includes: the inner wall of the inner sleeve is connected with the auxiliary frame; the rubber body is tubular and is sleeved on the outer wall of the inner sleeve; and the outer framework is a metal tubular part, the outer framework is sleeved and fixed at the outer wall of the rubber body, the outer wall of the outer framework is sleeved with the swing arm sleeve, and the outer framework is in interference fit with the swing arm sleeve. It also provides a swing arm sleeve assembly comprising the swing arm sleeve. The swing arm bushing and the swing arm bushing assembly can reduce abnormal sound which is easy to appear when the swing arm bushing is twisted.

The technical solutions disclosed in the above patent documents are all an attempt to be beneficial in the art.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a connection structure of swing arm assembly and sub vehicle frame, it can satisfy the simple and easy requirement of whole car assembly when satisfying sound rigidity.

A connection structure of swing arm assembly and sub vehicle frame, including swing arm assembly and the sub vehicle frame of being connected rather than the cooperation, characterized by: the swing arm assembly is composed of a bayonet-shaped swing arm framework, two swing arm sleeves and two swing arm bushings, wherein the two swing arm bushings are coaxially arranged and fixedly connected to bayonets of the swing arm framework, and the two swing arm bushings are respectively matched in the two swing arm bushings; one side of the auxiliary frame is provided with two matching parts, and the two swing arm bushings are matched with the two matching parts and connected to the auxiliary frame through bolts and nuts.

Further, the swing arm bush comprises a bush core body and a rubber sleeve which is sleeved outside the bush core body and is vulcanized into a whole, and a plurality of balls are embedded on the circumference of the end face of one end of the bush core body at equal intervals.

Furthermore, a graphite layer is arranged on the end face of one end of the bushing core body.

Further, the bushing core body is made of steel, aluminum/magnesium alloy or high-performance plastic.

Further, the rubber sleeve is formed by adopting natural rubber, sulfur, an activity promoter, an anti-aging agent and the bushing core body through a vulcanization process.

The utility model has the advantages that:

because a plurality of balls are embedded on the circumference of the end face of one end of the bushing core body at equal intervals; the stress of the matching part is well transferred and balanced, the tangential resistance between the end face of the bushing core body and the matching part of the auxiliary frame is reduced, the performance parameters of the chassis can be guaranteed to reach the standard, and the convenience for assembling the swing arm assembly can be improved.

Because the matching mode of the swing arm bushing and the auxiliary frame is changed into the matching of the balls on the end surface of the bushing core and the auxiliary frame from the matching of the end surface of the bushing core and the auxiliary frame, compared with the traditional swing arm assembling mode (axial forced assembly and axial sliding assembly), the problem of attenuation of effective force caused by local stress concentration of a contact surface is avoided, and the performance of the chassis is ensured.

Drawings

Fig. 1 is an exploded view of the present invention;

FIG. 2 is a schematic structural view of a swing arm assembly;

FIG. 3 is an enlarged view of portion A of FIG. 2;

FIG. 4 is a schematic structural view of the subframe;

FIG. 5 is an enlarged view of portion B of FIG. 4;

FIG. 6 is a cross-sectional view of the connection of the swing arm assembly to the subframe.

In the figure (technical signature):

1-swing arm framework, 11-swing arm sleeve;

2-swing arm bush, 21-bush core, 22-rubber sleeve, 23-ball, 24-graphite layer;

3-subframe, 31-matching surface;

4-bolt, 41-nut.

Detailed Description

The technical solution of the present invention will be described in detail with reference to the accompanying drawings.

Referring to fig. 1 to fig. 6, the connection structure of the swing arm assembly and the subframe comprises the swing arm assembly and the subframe 3 connected with the swing arm assembly in a matching way, and is characterized in that: the swing arm assembly is composed of a bayonet-shaped swing arm framework 1, two swing arm sleeves 11 and two swing arm bushings 2, wherein the two swing arm sleeves 11 are coaxially arranged and fixedly connected to bayonets of the swing arm framework 1, and the two swing arm bushings 2 are respectively matched in the two swing arm sleeves 11; one side of the subframe 3 is provided with two matching parts 31, and the two swing arm bushings 2 are respectively matched with the two matching parts 31 and connected to the subframe 3 through bolts 4 and nuts 41.

The swing arm bushing 2 is composed of a bushing core body 21 and a rubber sleeve 22 which is sleeved outside the bushing core body and vulcanized into a whole, and a plurality of balls 23 are embedded on the circumference of the end face of one end of the bushing core body 21 at equal intervals; good transmission and equilibrium are carried out with the stress to the matching portion, reduce the tangential resistance between bush core terminal surface and the sub vehicle frame matching portion, can enough guarantee that chassis performance parameter is up to standard, can improve the convenience of swing arm assembly again. The balls are made of high-wear-resistant materials, and the diameters and the number of the balls are adjusted according to the end face sizes of different bushings and performance indexes of the chassis.

A graphite layer 24 is also arranged on the end face of one end of the bush core body 21; the strength of the stress direction can be improved while the surface sliding is ensured. The graphite layer is made of conventional graphite or modified graphite materials, is formed by a mould, and is combined with the lining core body in a filling mode.

The bushing core 21 is made of steel, aluminum/magnesium alloy or high-performance plastic.

The rubber sleeve 22 is formed by adopting natural rubber, sulfur, an activity promoter, an anti-aging agent and the bushing core 22 through a vulcanization process.

Claims

1. The utility model provides a connection structure of swing arm assembly and sub vehicle frame, includes swing arm assembly and sub vehicle frame (3) rather than the cooperation is connected, characterized by: the swing arm assembly is composed of a bayonet-shaped swing arm framework (1), two swing arm sleeves (11) and two swing arm bushings (2), wherein the two swing arm sleeves (11) are coaxially arranged and fixedly connected to bayonets of the swing arm framework (1), and the two swing arm bushings (2) are respectively matched in the two swing arm sleeves (11); two matching parts (31) are arranged on one side of the auxiliary frame (3), and the two swing arm bushings (2) are respectively matched with the two matching parts (31) and connected to the auxiliary frame (3) through bolts (4) and nuts (41);

the swing arm bushing (2) is composed of a bushing core body (21) and a rubber sleeve (22) which is sleeved outside the bushing core body and vulcanized into a whole, and a plurality of balls (23) are embedded on the circumference of one end face of the bushing core body (21) at equal intervals.

2. The connecting structure of a swing arm assembly and a sub-frame according to claim 1, wherein: and a graphite layer (24) is also arranged on the end face of one end of the bushing core body (21).

3. The connecting structure of the swing arm assembly and the sub-frame according to claim 1 or 2, wherein: the bushing core body (21) is made of steel, aluminum/magnesium alloy or high-performance plastic.

4. The connecting structure of a swing arm assembly and a sub-frame according to claim 1 or 2, wherein: the rubber sleeve (22) and the bushing core body (21) are molded through a vulcanization process.