Anti-collision safety rear axle structure for rear-drive electric vehicles

Abstract

The invention discloses an anti-collision safety rear axle structure for a rear-drive electric automobile. The anti-collision safety rear axle structure comprises a transversely arranged cylindrical rear axle shell, a motor and a trailing arm, wherein a power mechanism is arranged in the middle of the rear axle shell, and comprises a differential mechanism which is fixedly arranged in the middle of the rear axle shell; the motor is fixed on the differential mechanism; an output shaft of the motor is connected with the differential mechanism; the output shaft of the differential mechanism is connected with a wheel through a transmission shaft in the rear axle shell; the front end of the trailing arm is connected with a frame main body at the chassis position of an automobile body; the rear end of the trailing arm is connected with the rear axle shell. The anti-collision safety rear axle structure is characterized in that a side collision-resistant buffer device and a damping suspension mechanism are also arranged between the rear axle shell and a frame. The anti-collision safety rear axle structure is capable of relieving impact force of lateral collision, and is good in safety, meanwhile, the vibration reducing performance and the damping performance can also be conveniently adjusted to be suitable for electric automobiles, and the anti-collision safety rear axle structure has the advantages of being good in vibration reducing effect, convenient and quick to install, good in overall stability, convenient to install and overhaul and the like.

Description

technical field [0001] The invention relates to a rear-drive electric vehicle, in particular to an anti-collision and safe rear axle structure of the rear-drive electric vehicle. Background technique [0002] An electric vehicle is a vehicle that uses a battery as an energy source, and converts electrical energy into mechanical energy through controllers, motors and other components to control the current and change the speed. The first electric car was produced in 1834 and it was driven by a DC motor. Today, electric vehicles have changed dramatically and come in many varieties. Among them, an electric vehicle (EV) refers to a vehicle powered by an on-board power supply, driven by a motor to drive the wheels, and conforms to the requirements of road traffic and safety regulations. Due to its smaller impact on the environment than traditional cars, its prospects are widely optimistic, but the current technology is still immature. [0003] In terms of electric vehicles, th...

AI Technical Summary

Problems solved by technology

[0005] Existing electric vehicles generally imitate the structure research and development of ordinary automobiles during research and development. For example, a rear axle assembly disclosed in CN201410249550 belongs to this technology, which has the following defects: 1. It is most likely to cause death in a lateral impact, and electric vehicles are lighter than ordinary cars, so if they are subjected to a side impact, they are more likely to cause death of the driver, and the safety is poor

2 In the shock absorbing device, the shock absorbing spring and the damper directly adopt the structure of the shock absorbing and damping device in the automobile, that is, the two are integrated together, but the existing shock absorbing and damping devices are all developed and designed for ordinary cars, and their The matching degree of shock absorption performance and damping performance is suitable for ordinary cars, and the weight of electric vehicles is much lower than that of ordinary cars, so the existing shock absorption and damping devices cannot adjust the shock absorption and damping performance independently. If the performance of the two does not match It will cause mutual influence on performance, so the integrated shock absorption and damping device of ordinary cars is not suitable for application in electric vehicles

3. The trailing arm is fixedly connected to the rear axle shell by welding or fastening with two bolts arranged in the same line, which has poor shock absorption effect and is inconvenient to install

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