CN216684052U

CN216684052U - Electric automobile rear suspension assembly

Info

Publication number: CN216684052U
Application number: CN202123290456.0U
Authority: CN
Inventors: 李保奎; 陈松鹤; 王勇; 周志强; 汪仁坤; 石建伟
Original assignee: Chery Automobile Co Ltd
Current assignee: Chery Automobile Co Ltd
Priority date: 2021-12-25
Filing date: 2021-12-25
Publication date: 2022-06-07
Anticipated expiration: 2031-12-25

Abstract

The utility model aims to provide an electric automobile rear suspension assembly capable of effectively avoiding rubber cushion cracking, which comprises a rear suspension framework connected with an auxiliary frame, wherein at least two buffer bushings are integrally pressed on the rear suspension framework, a rear suspension support is connected onto the buffer bushings, and the rear suspension support is fixedly connected with a speed reducer. In the scheme, the rear suspension with at least two buffer bushings is adopted, so that the quality problem that the rear suspension is broken or rubber is cracked can be avoided, and the rear suspension can be compatible with a plurality of large-torque motors; in addition, the buffer bush is not influenced by arrangement space, and the buffer bush and the rear suspension bracket are easier to assemble.

Description

Electric automobile rear suspension assembly

Technical Field

The utility model relates to the technical field of electric automobile suspension systems, in particular to a rear suspension assembly of an electric automobile.

Background

The rear suspension of the power assembly is a core component of a power system of the whole electric automobile for bearing the whole automobile, and the working state of the power assembly directly influences the whole automobile performance of the electric automobile. In the case of the whole vehicle, the spatial arrangement of the whole vehicle is considered, the reliability and the force transmission performance of the rear suspension are also considered, and if the force transmission is uneven, the shaking of the whole vehicle is caused, so that the driving comfort and the power performance are influenced. The existing electric automobile rear suspension is generally connected with a speed reducer, and when the installation point is arranged on the side surface of the speed reducer and the arrangement space is compact, the suspension cushion can bear large load. Most suspension systems are three-point suspension systems, and generally, a rear suspension has only one suspension cushion structure, and the following technical schemes are disclosed in the utility model patent named as power assembly suspension of electric vehicle (grant publication number: CN 211416933U): the suspension framework is connected with the auxiliary frame, the suspension framework and the buffer bush are pressed into a whole, the buffer bush is connected with the suspension support, and the suspension support is connected with the power assembly through bolts. The vibration generated by the power assembly and the jolt of the road surface in the structure are buffered and reduced through the buffer bush 20, so that the suspension structure is more convenient to disassemble and assemble, and the number of parts required to be assembled and the assembly time are reduced. However, as the torque of the motor is larger and larger, one suspension cushion can bear a large load, and the rear suspension structure is easy to break or crack if not properly designed.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an electric automobile rear suspension assembly which effectively avoids cracking of a rubber cushion.

In order to achieve the purpose, the utility model adopts the technical scheme that: the utility model provides a suspension assembly behind electric automobile, includes the back suspension skeleton of being connected with sub vehicle frame, and integrative pressure equipment has two at least cushion bushes on the back suspension skeleton, is connected with the back suspension support on the cushion bush, back suspension support and reduction gear fixed connection.

In the scheme, the rear suspension with at least two buffer bushings is adopted, so that the quality problem that the rear suspension is broken or rubber is cracked can be avoided, and the rear suspension can be compatible with a plurality of large-torque motors; in addition, the buffer bush is not influenced by arrangement space, and the buffer bush and the rear suspension bracket are easier to assemble.

Drawings

FIG. 1 is a perspective view of a rear suspension assembly;

FIG. 2 is a front view of FIG. 1;

FIG. 3 is a top view of FIG. 1;

fig. 4 is a right side view of fig. 1.

Detailed Description

As shown in fig. 1 to 4, a rear suspension assembly of an electric vehicle includes a rear suspension frame 10 connected to a subframe, at least two buffer bushings 20 integrally press-mounted on the rear suspension frame 10, a rear suspension bracket 30 connected to the buffer bushings 20, and the rear suspension bracket 30 fixedly connected to a speed reducer. The rear suspension assembly adopts at least two buffer bushings 20, when bearing a large load, the buffer bushings 20 and even the rear suspension bracket 30 cannot crack or break due to stress concentration, and can be compatible with a plurality of large-torque motors; in addition, the cushion bushing 20 is not affected by the arrangement space, and is more easily assembled with the rear suspension bracket 30. Meanwhile, due to the double-bushing type rear suspension, the limiting effect is better, and a good displacement control effect can be achieved on the power assembly under the limit working condition.

As a preferable scheme of the present invention, the rear suspension frame 10 includes two outer cylinders 11 connected to each other, two cushion bushes 20 are press-fitted into the outer cylinders 11 and vulcanized into one body by rubber 21, the middle portions of the cushion bushes 20 are fixedly connected to the rear suspension bracket 30 by fitting bolts 22, and the axial cores of the fitting bolts 22 are arranged in parallel with the outer cylinders 11. Because of the double-bush type rear suspension, the assembling bolt 22 can be assembled from front to back or from back to front, and the assembly process is simplified.

Furthermore, two sides of the two outer cylinders 11, which are far away from the middle joint, extend towards two sides to form flat leg plates 12, the leg plates 12 are connected with the subframe through connecting bolts 13, and the connecting bolts 13 are arranged perpendicular to the assembling bolts 22.

Rear suspension support 30 for whole plate that is the T type, including first mounting panel 31, one side face of first mounting panel 31 is through assembling bolt 22 and buffer bush 20 fixed connection, the opposite side face orientation of mounting panel 31 is kept away from one side of rear suspension skeleton 10 and is extended there is second mounting panel 32, the face and the first mounting panel 31 of second mounting panel 32 are arranged perpendicularly, and second mounting panel 32 is through three mounting bolt 33 and reduction gear fixed connection. The double-bushing type rear suspension is only connected with one rear suspension bracket 30, and has good shock absorption performance and low cost.

When the damper is installed, in order to avoid interference with the damper, the upper plate edge of the second mounting plate 32 is obliquely arranged outwards from the connection part with the first mounting plate 31 and is higher than the upper plate edge of the first mounting plate 31.

Claims

1. The utility model provides a suspension assembly behind electric automobile, includes back suspension skeleton (10) of being connected with sub vehicle frame, its characterized in that: at least two buffer bushes (20) are integrally pressed on the rear suspension framework (10), a rear suspension support (30) is connected to the buffer bushes (20), and the rear suspension support (30) is fixedly connected with the speed reducer.

2. The electric vehicle rear suspension assembly of claim 1, wherein: rear suspension skeleton (10) include two interconnect's urceolus (11), two buffer bush (20) pressure equipment in urceolus (11) and vulcanize as an organic wholely through rubber (21), the middle part of buffer bush (20) is through attaching together bolt (22) and rear suspension support (30) fixed connection, the axle core and urceolus (11) parallel arrangement of attaching together bolt (22).

3. The electric vehicle rear suspension assembly of claim 2, wherein: two sides of the two outer cylinders (11) far away from the middle connection part extend towards two sides to form horizontal supporting leg plates (12), the supporting leg plates (12) are connected with the auxiliary frame through connecting bolts (13), and the connecting bolts (13) are vertically arranged with the combining bolts (22).

4. The electric vehicle rear suspension assembly of claim 2, wherein: rear suspension support (30) be the plate of T type for whole, including first mounting panel (31), one side face of first mounting panel (31) is through assembling bolt (22) and cushion bush (20) fixed connection, the opposite side face orientation of mounting panel (31) is kept away from one side of rear suspension skeleton (10) and is extended there is second mounting panel (32), the face and the first mounting panel (31) of second mounting panel (32) are arranged perpendicularly, and second mounting panel (32) are through three construction bolt (33) and reduction gear fixed connection.

5. The electric vehicle rear suspension assembly of claim 4, wherein: the upper plate edge of the second mounting plate (32) is obliquely arranged outwards from the joint of the second mounting plate and the first mounting plate (31) and is higher than the upper plate edge of the first mounting plate (31).