CN210257852U

CN210257852U - Rear axle structure of electric vehicle

Info

Publication number: CN210257852U
Application number: CN201921262071.3U
Authority: CN
Inventors: 蒋思行
Original assignee: Zhejiang Langxiang Industrial Co ltd
Current assignee: Zhejiang Langxiang Industrial Co ltd
Priority date: 2019-08-06
Filing date: 2019-08-06
Publication date: 2020-04-07
Anticipated expiration: 2029-08-06

Abstract

The utility model provides an electric motor car rear axle structure belongs to vehicle suspension technical field. It has solved the poor problem of current axle stability. This electric motor car rear axle structure, install in the rear axle box of motor assembly both sides and wear to locate the drive shaft in the rear axle box including bilateral symmetry, the one end of rear axle box has the flange face of integral type structure, and be connected with motor assembly through this flange face, the outside of rear axle box has the installation face of integral type, be connected with the brake shoe through the fixed axle on the installation face, this fixed axle sets up on the installation face through self-locking nut axial of screwing, the opposite side of installation face articulates there is the brake rocking arm, the axial has linked firmly the rocking arm axle on the brake rocking arm, thereby the tip of rocking arm axle is located the clearance department control brake shoe of brake shoe. The utility model discloses a direct connection motor assembly and brake shoe form the integral structure on the rear axle box, consequently have overall structure compacter to the better advantage of electric motor car driving stability.

Description

Rear axle structure of electric vehicle

Technical Field

The utility model belongs to the technical field of the vehicle suspension, a axle, in particular to electric motor car rear axle structure is related to.

Background

The electric vehicle drives the vehicle to run by taking the vehicle-mounted power storage battery as a power source, because the electric vehicle has the characteristics of energy conservation, environmental protection and portability, the use cost is lower, more and more attention is paid to the electric vehicle, the electric vehicle rear axle is a rear driving shaft component for transmitting the power of the vehicle, the electric vehicle rear axle is composed of two half bridges and can implement half-bridge differential motion, and meanwhile, the electric vehicle rear axle is also used for supporting wheels and a device for connecting the rear wheels, is connected with a motor assembly to realize the output of the power, and a drum brake which is lower in manufacturing cost but better in braking performance is generally used in the electric vehicle.

Disclosure of Invention

The utility model aims at providing a compact structure makes electric motor car rear width littleer to the problem that exists among the prior art to the better electric motor car rear axle structure of overall stability.

The purpose of the utility model can be realized by the following technical proposal: the utility model provides an electric motor car rear axle structure, includes that bilateral symmetry installs in the rear axle box of motor assembly both sides and wears to locate the drive shaft in the rear axle box, the one end of rear axle box has the flange face of integral type structure to be connected with motor assembly through this flange face, the tip of drive shaft stretches into the inside transmission that realizes the torque force of motor assembly, its characterized in that, the outside of rear axle box has the installation face of integral type, the installation face on be connected with brake shoe through the fixed axle, this fixed axle sets up on the installation face through auto-lock nut screwing axial, the opposite side of installation face articulates there is the brake rocking arm, the brake rocking arm on the axial link firmly the rocking arm axle to thereby the tip of rocking arm axle is located the clearance department control brake shoe of brake shoe.

The technical effects of the rear axle structure of the electric vehicle are as follows: the rear axle box is directly connected with the motor assembly through a flange face, and the fixed shaft and the brake rocker arm are both directly mounted on the mounting face of the rear axle box to control the brake shoe, the brake rocker arm is driven to rotate through a brake cable, the rocker shaft on the brake rocker arm enables the brake shoe to expand to be in contact with the inner wall of a brake wheel of the electric vehicle to generate friction braking, the structure is more compact due to the fact that the rear axle is integrally small in width through the design of the structure, the running stability of the storage battery vehicle is improved, the brake shoe is directly expanded through the rotation of the rocker shaft, the structure is simple, the brake shoe is suitable for being used on the electric vehicle, and later-stage maintenance is facilitated.

In foretell electric motor car rear axle structure, the welding of the below of rear axle box has the base, and the welding of the top of rear axle box has the bumper shock absorber connecting seat.

In the rear axle structure of the electric vehicle, a sealing ring is arranged between the rear axle box body and the motor assembly.

In the rear axle structure of the electric vehicle, a bearing is clamped on the end surface of the rear axle box body through a clamping ring, and the driving shaft penetrates through the bearing to form support.

Compared with the prior art, the rear axle structure of the electric vehicle forms an integrated structure by directly connecting the motor assembly and the brake shoe block on the rear axle box body, so that the rear axle structure of the electric vehicle has the advantages of more compact overall structure and better driving stability of the electric vehicle.

Drawings

Fig. 1 is an exploded view of the rear axle of the electric vehicle.

In the figure, 1, a motor assembly; 2. a rear axle housing; 3. a drive shaft; 4. a flange face; 5. a mounting surface; 6. a fixed shaft; 7. a brake shoe; 8. a brake rocker arm; 9. a rocker shaft; 10. a base; 11. a connecting seat; 12. a seal ring; 13. a snap ring; 14. and a bearing.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in fig. 1, the rear axle structure of the electric vehicle includes a rear axle box 2 installed at two sides of a motor assembly 1 in a bilateral symmetry manner and a driving shaft 3 penetrating through the rear axle box 2, one end of the rear axle box 2 is provided with a flange face 4 of an integrated structure and is connected with the motor assembly 1 through the flange face 4, the end of the driving shaft 3 extends into the motor assembly 1 to realize the transmission of torque, the outer side of the rear axle box 2 is provided with an integrated installation face 5, the installation face 5 is connected with a brake shoe 7 through a fixing shaft 6, the fixing shaft 6 is screwed and axially arranged on the installation face 5 through a self-locking nut, the other side of the installation face 5 is hinged with a brake rocker arm 8, the brake rocker arm 8 is axially and fixedly connected with a rocker arm 9, and the end of the rocker arm 9 is located at a gap of the brake shoe 7 to.

In a detailed description, the base 10 is welded below the rear axle box 2 and fixedly connected with the frame through the base 10, and the damper connecting seat 11 is welded above the rear axle box 2.

Further, a sealing ring 12 is arranged between the rear axle box 2 and the motor assembly 1 for preventing engine oil in the motor assembly 1 from leaking.

Further, a bearing 14 is clamped on the end face of the rear axle box 2 through a snap ring 13, the driving shaft 3 is supported through the bearing 14, the end part of the driving shaft 3 is supported through the bearing 14, the rotating stability of the driving shaft is improved, and the end part of the driving shaft 3 is provided with a thread structure for connection and a spline structure for transmission.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Although the terms of the motor assembly 1, the rear axle housing 2, the driving shaft 3, the flange surface 4, the mounting surface 5, the fixed shaft 6, the brake shoe 7, the brake rocker arm 8, the rocker shaft 9, the pedestal 10, the connecting seat 11, the sealing ring 12, the snap ring 13, the bearing 14, and the like are used more frequently, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed in a manner that is inconsistent with the spirit of the invention.

Claims

1. The rear axle structure of the electric vehicle comprises rear axle boxes (2) which are symmetrically arranged at two sides of a motor assembly (1) in a bilateral mode and a driving shaft (3) penetrating through the rear axle boxes (2), wherein one end of each rear axle box (2) is provided with a flange face (4) of an integrated structure and is connected with the motor assembly (1) through the flange face (4), the end part of the driving shaft (3) extends into the motor assembly (1) to realize the transmission of torque, the rear axle structure is characterized in that an integrated mounting face (5) is arranged at the outer side of each rear axle box (2), a brake shoe block (7) is connected onto the mounting face (5) through a fixing shaft (6), the fixing shaft (6) is axially arranged on the mounting face (5) through a self-locking nut, a brake rocker arm (8) is hinged to the other side of the mounting face (5), and a rocker shaft (9) is axially and fixedly connected onto the brake rocker arm (8), and the end of the rocker shaft (9) is located at the gap of the brake shoe (7) to control the brake shoe (7).

2. The rear axle structure of the electric vehicle as claimed in claim 1, wherein a base (10) is welded below the rear axle box body (2), and a damper connecting seat (11) is welded above the rear axle box body (2).

3. The rear axle structure of the electric vehicle as claimed in claim 2, wherein a sealing ring (12) is arranged between the rear axle box (2) and the motor assembly (1).

4. The rear axle structure of the electric vehicle as claimed in claim 3, wherein a bearing (14) is clamped on the end face of the rear axle box (2) through a clamping ring (13), and the driving shaft (3) penetrates through the bearing (14) to form a support.