CN209870077U - Rear suspension structure of power assembly of pure electric vehicle - Google Patents

Abstract

The utility model discloses a rear suspension structure of a pure electric vehicle power assembly, comprising a rear suspension transition bracket, a rear suspension cushion assembly and a rear suspension bracket; the rear suspension transition bracket is welded on a subframe the rear suspension cushion assembly is fixed on the rear suspension transition bracket; the rear suspension bracket is fixed on the rear suspension cushion assembly, and the rear suspension bracket is connected with the power assembly. The rear suspension structure of the pure electric vehicle power assembly of the utility model is uniformly stressed, thereby reducing the jitter of the vehicle, improving the bearing capacity, and meeting the requirements of the pure electric passenger vehicle rear suspension being uniformly stressed and durable.

Description

A rear suspension structure of a pure electric vehicle powertrain

technical field

The utility model relates to the technical field of a pure electric vehicle power assembly, in particular to a rear suspension structure of a pure electric vehicle power assembly.

Background technique

The rear suspension of the powertrain is one of the important core components of the electric vehicle carrying the vehicle power system, and its working state directly affects the vehicle performance of the new energy vehicle. The rear suspension structure of the powertrain directly affects the NVH performance and dynamic performance of the vehicle. In the case of a complete vehicle, in addition to the space layout of the vehicle, the reliability of the mount itself and the force transmission performance should also be considered. If the force transmission is not uniform, it will cause the vehicle to shake, thereby affecting the driving comfort and power performance. . If the structural design is unreasonable, it will also bring greater vehicle safety hazards. Then it is very important to design the suspension structure of a car.

The traditional fuel vehicle engine and the mounting structure have many stress points, so the combination of the mounting and the engine is very close, while the powertrain of an electric vehicle is mainly composed of a motor and a reducer, in which the motor is the driving device and the reducer is the slave. Therefore, the powertrain of the electric vehicle will limit the layout of the surrounding environment, which will lead to difficulties in the design of the rear suspension bracket assembly, and the suspension structure will also be affected. Uneven force produces jitter or the suspension structure is not strong enough to cause problems in durability performance.

Utility model content

The purpose of the utility model is to provide a rear suspension structure of a pure electric vehicle power assembly, which is used to solve the problems of jitter caused by uneven force on the suspension structure and durability problems caused by insufficient strength.

The utility model adopts the following technical solutions to solve the technical problems:

A rear suspension structure of a pure electric vehicle powertrain, comprising a rear suspension transition bracket, a rear suspension cushion assembly and a rear suspension bracket;

The rear suspension transition bracket is welded on the subframe; the rear suspension cushion assembly is fixed on the rear suspension transition bracket; the rear suspension bracket is fixed on the rear suspension cushion assembly, and The rear suspension bracket is connected with the power assembly.

Further, the rear suspension transition bracket includes a quadrilateral fixing plate, and the fixing plate is provided with 4 threaded holes; the two sides of the fixing plate in the vertical direction are bent in the same direction to form a first connecting plate and the second connecting board.

Further, the rear suspension cushion assembly includes a connecting bracket, a cylindrical frame, a rubber bushing and a first bolt; the connecting bracket is provided with 4 threaded holes, and the position of the threaded holes of the connecting bracket is the same as that of the fixing plate. The positions of the threaded holes on the connecting bracket correspond to the positions; the first bolts pass through the threaded holes of the connecting bracket and the threaded holes of the fixing plate to connect the connecting bracket and the fixing plate; the cylindrical skeleton is arranged on the connecting bracket, and the connecting bracket It is integrally formed with the cylindrical skeleton; the rubber bushing is arranged inside the cylindrical skeleton, and the outer sleeve of the rubber bushing has an interference fit with the inner wall of the cylindrical skeleton; the center of the rubber bushing is also formed with an inner sleeve Tube.

Further, the first bolt is a Q150B1090 standard bolt.

Further, the rear suspension bracket is U-shaped as a whole, and includes a support plate, a first side plate and a second side plate; the first side plate and the second side plate are respectively vertically arranged on the support plate, and the first The side plate and the second side plate are parallel to each other; the support plate, the first side plate and the second side plate are integrally formed; the corresponding positions of the first side plate and the second side plate are sequentially opened from top to bottom. A through hole, a second through hole and a third through hole; the axes of the first through hole, the second through hole and the third through hole are not on the same straight line.

Further, the rear suspension bracket is connected to the rear suspension cushion assembly through a second bolt; the rear suspension bracket is connected to the speed reducer on the power assembly through a third bolt.

Further, the second bolt is preferably a Q150B1090 standard bolt; the third bolt is preferably a Q150B08105 standard bolt.

The utility model has the following beneficial effects: the rear suspension structure of the pure electric vehicle powertrain of the utility model is uniformly stressed, thereby reducing the jitter of the vehicle, improving the bearing capacity, and satisfying the force of the rear suspension of the pure electric passenger vehicle Uniform and meet the requirements of durable performance.

Description of drawings

Fig. 1 is the connection schematic diagram of the rear suspension of the pure electric vehicle powertrain of the present invention;

Fig. 2 is the structural representation of the rear suspension of the pure electric vehicle powertrain of the present invention;

Fig. 3 is the force analysis diagram of the rear suspension of the pure electric vehicle powertrain of the utility model;

4 is an exploded view of the rear suspension of the pure electric vehicle powertrain of the present invention;

FIG. 5 is a schematic diagram of the cooperation between the rear mount of the powertrain of the pure electric vehicle of the present invention and the powertrain.

The markings in the figure are as follows: 1-rear suspension transition bracket; 2-rear suspension cushion assembly; 3-rear suspension bracket; 4-subframe; 5-fixed plate; 6-first connecting plate; 7 -Second connecting plate; 8-Connecting bracket; 9-Cylinder frame; 10-Rubber bushing; 11-First bolt; 12-Outer sleeve; 13-Inner sleeve; 14-Support plate; 15-First side plate; 16-second side plate; 17-first through hole; 18-second through hole; 19-third through hole; 20-second bolt; 21-third bolt; 22-reducer; 23-theory Force transmission direction line; 24-Force transmission line.

Detailed ways

The technical solutions of the present utility model are further described below in conjunction with the embodiments and the accompanying drawings.

Example 1

This embodiment provides a rear suspension of a pure electric vehicle powertrain, including a rear suspension transition bracket 1, a rear suspension cushion assembly 2 and a rear suspension bracket 3; the rear suspension transition bracket 1 is welded on on the subframe 4; the rear suspension cushion assembly 2 is fixed on the rear suspension transition bracket 1; the rear suspension bracket 3 is fixed on the rear suspension cushion assembly 2, and the rear suspension The mounting bracket 3 is connected to the powertrain.

FIG. 2 is a schematic structural diagram of the rear suspension of the pure electric vehicle powertrain of the present invention. The rear suspension transition bracket 1 includes a quadrilateral fixing plate 5, and the fixing plate 5 is provided with 4 threaded holes; the two sides of the fixing plate 5 in the vertical direction are bent in the same direction to form a first The connecting plate 6 and the second connecting plate 7 . Specifically, the edges of the first connecting plate 6 and the second connecting plate 7 are formed in a shape consistent with the subframe 4 , so that the rear suspension transition bracket 1 is welded more firmly.

The rear suspension cushion assembly 2 includes a connecting bracket 8, a cylindrical frame 9, a rubber bush 10 and a first bolt 11; The position of the hole corresponds to the position of the threaded hole on the fixing plate 5; the first bolt 11 connects the connecting bracket 8 and the fixing plate 5 through the threaded hole of the connecting bracket 8 and the threaded hole of the fixing plate 5; the cylindrical skeleton 9 is arranged on the connecting bracket 8, and the connecting bracket 8 and the cylindrical frame 9 are integrally formed; the rubber bushing 10 is arranged inside the cylindrical frame 9, and the outer sleeve 12 of the rubber bushing 10 is The inner wall of the cylindrical frame 9 is in an interference fit; an inner sleeve 13 is also formed in the center of the rubber bushing 10 .

Preferably, the first bolt 11 is a standard Q150B1090 bolt.

In this embodiment, the rear suspension cushion assembly is used to isolate and absorb engine vibration and road excitation, reduce the deformation of the frame and the impact received, and reduce the fatigue of other components due to excessive vibration. damage, while reducing the impact on people in the passenger compartment, and improving the ride and comfort of the vehicle during driving.

The rear suspension bracket 3 is U-shaped as a whole, and includes a support plate 14 , a first side plate 15 and a second side plate 16 ; the first side plate 15 and the second side plate 16 are respectively vertically arranged on the support plate 14 the first side plate 15 and the second side plate 16 are parallel to each other; the support plate 14, the first side plate 15 and the second side plate 16 are integrally formed; the first side plate 15 and the second side plate 16 At the corresponding positions, a first through hole 17 , a second through hole 18 and a third through hole 19 are opened in sequence from top to bottom; the axes of the first through hole 17 , the second through hole 18 and the third through hole 19 not on the same straight line.

The rear suspension bracket 3 is connected to the rear suspension cushion assembly 2 through a second bolt 20 . Specifically, the second bolt 20 passes through the third through hole 19 on the first side plate 15 , the inner sleeve 13 of the rubber bush 10 and the third through hole 19 on the second side plate 16 in sequence, and passes through The nut fixedly connects the rear suspension bracket 3 with the rear suspension cushion assembly 2 .

The rear suspension bracket 3 is connected with the speed reducer 22 on the power assembly through a third bolt 21 . Specifically, the two third bolts 21 pass through the second through holes 18 and the third through holes 19 respectively and are combined with the threaded holes on the speed reducer 22 to connect the rear suspension bracket 3 with the powertrain.

Further, the second bolt 20 is preferably a Q150B1090 standard bolt; the third bolt 21 is preferably a Q150B08105 standard bolt.

As shown in Figure 3, the powertrain rear suspension of the present invention carries the weight of the entire powertrain; the overall force analysis is carried out. It is embodied that the theoretical force transmission direction line 23 and the force transmission line 24 (between bolts and bolts) are in a triangular state, and the triangular shape is stable and the force transmission distance is also the shortest. Specifically, this structure can effectively improve the user's driving performance and vehicle dynamic performance, and has been applied and verified on the CA6462EV1 model.

The sequence of the above embodiments is only for convenience of description, and does not represent the advantages or disadvantages of the embodiments.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model, but not to limit them; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: It is still possible to modify the technical solutions recorded in the foregoing embodiments, or to perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit of the technical solutions of the embodiments of the present invention. and range.

Claims (7)

1. A rear suspension structure of a pure electric vehicle powertrain, characterized in that it comprises a rear suspension transition bracket, a rear suspension cushion assembly and a rear suspension bracket; The rear suspension transition bracket is welded on the subframe; the rear suspension cushion assembly is fixed on the rear suspension transition bracket; the rear suspension bracket is fixed on the rear suspension cushion assembly, and The rear suspension bracket is connected with the power assembly. 2 . The rear suspension structure of the pure electric vehicle powertrain according to claim 1 , wherein the rear suspension transition bracket comprises a quadrilateral fixing plate, and the fixing plate is provided with 4 threaded holes; 3 . Both sides of the fixing plate in the vertical direction are bent in the same direction to form a first connecting plate and a second connecting plate. 3. The rear suspension structure of the pure electric vehicle powertrain according to claim 1, wherein the rear suspension cushion assembly comprises a connecting bracket, a cylindrical frame, a rubber bush and a first bolt; The connecting bracket is provided with 4 threaded holes, and the positions of the threaded holes of the connecting bracket correspond to the positions of the threaded holes on the fixing plate; the first bolts pass through the threaded holes of the connecting bracket and the threaded holes of the fixing plate. The connecting bracket is connected with the fixing plate; the cylindrical frame is arranged on the connecting bracket, and the connecting bracket and the cylindrical frame are integrally formed; the rubber bushing is arranged inside the cylindrical frame, and the rubber bushing is The outer sleeve of the rubber sleeve is in interference fit with the inner wall of the cylindrical frame; an inner sleeve is also formed in the center of the rubber sleeve. 4 . The rear suspension structure of the pure electric vehicle powertrain according to claim 3 , wherein the first bolt is a standard Q150B1090 bolt. 5 . 5 . The rear suspension structure of the pure electric vehicle powertrain according to claim 1 , wherein the rear suspension bracket is U-shaped as a whole, and comprises a support plate, a first side plate and a second side plate; 6 . The first side plate and the second side plate are respectively vertically arranged on the support plate, and the first side plate and the second side plate are parallel to each other; the support plate, the first side plate and the second side plate are integrally formed; At the corresponding positions of the first side plate and the second side plate, a first through hole, a second through hole and a third through hole are opened in sequence from top to bottom; the first through hole, the second through hole and the third through hole The axes of the through holes are not on the same straight line. 6 . The rear suspension structure of the pure electric vehicle powertrain according to claim 5 , wherein the rear suspension bracket is connected to the rear suspension cushion assembly through a second bolt; the rear suspension bracket Connect with the reducer on the powertrain through the third bolt. 7 . The rear suspension structure of the pure electric vehicle powertrain according to claim 6 , wherein the second bolt is preferably a Q150B1090 standard bolt; the third bolt is preferably a Q150B08105 standard bolt. 8 .