Integrated type motor rear-drive rear-suspension mechanism

Abstract

The invention discloses an integrated type motor rear-drive rear-suspension mechanism which comprises a rear axle, a driving mechanism and a rear suspension. A differential mechanism is a planetary gear differential mechanism. A cylindrical input gear is arranged on a planetary gear support in the planetary gear differential mechanism. The planetary gear differential mechanism and a reducer are installed in the same integrated shell body in an integrated mode. An output shaft of the reducer is connected with the cylindrical input gear in the planetary gear differential mechanism in an integrated and transmission mode through an output gear. The output shaft of the reducer is parallel to an output shaft of the planetary gear differential mechanism. An input shaft of the reducer is fixedly connected with an output shaft of an electromotor in an integrated and coaxial mode. The suspension comprises two upper trailing arms and two lower trailing arms. The integrated type motor rear-drive rear-suspension mechanism can reduce an intermediate transmission link and improve transmission efficiency, and the transmission efficiency can be improved to 92%. Meanwhile, occupied space near the rear axle can be reduced greatly so that other parts can be arranged conveniently, and comfort of a rider can be improved.

Description

technical field [0001] The invention relates to a rear-drive rear suspension mechanism, in particular to an integrated motor rear-drive rear suspension mechanism for passenger electric vehicles. Background technique [0002] Electric vehicles refer to vehicles powered by vehicle-mounted power supplies, driven by electric motors to drive wheels, and meeting 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] The structure of existing electric vehicle has two kinds. One is a front drive independent suspension structure, and the other is a single trailing arm type integral bridge rear drive structure. [0004] The problems of the front-wheel drive independent suspension structure are as follows: 1. Compared with the internal combustion vehicle, the driving force of the electric vehicle is insufficient. Since the c...

AI Technical Summary

Problems solved by technology

[0004] The problems of the front-wheel drive independent suspension structure are as follows: 1. Compared with the internal combustion vehicle, the driving force of the electric vehicle is insufficient. Since the center of gravity of the vehicle will move backward when starting, accelerating, and climbing, the front drive will have the problem of insufficient driving force, especially in the This problem is more noticeable when climbing hills

2. The front drive arrangement, the motor and the reducer are placed in the front cabin, which increases the load on the front wheels and makes the steering of the vehicle laborious

3. The front of the motor and accelerator causes the occupation of the front space

[0005] The problems existing in the rear drive structure of the single trailing arm integral bridge are as follows: 1. The single trailing arm shock absorbing structure is mainly used in the front drive form

Long-term impact by force in this direction will shorten the life of the trailing arm, which will lead to safety issues

2. In the process of transmitting the rear driving force to the body, it is only transmitted through a single arm, which reduces the stability of the vehicle

3. Vehicle comfort is not good

That is to say, the changes in the movement and force of the two lower trailing arms will interfere with each other, increase the internal stress of each component, and reduce the service life of each component

Images