hub drive assembly

Abstract

A wheel hub drive assembly, the shell located in the wheel hub forms a sealed motor chamber with a drive motor, a sealed reducer chamber with a reducer, and a brake chamber that communicates with the outside and is provided with a brake. The reducer chamber, The brake cavity is distributed along the axial direction away from the hub mounting surface; the motor cavity includes a body close to the inner peripheral surface of the hub and a channel extending toward the central axis of the hub; the output end of the driving motor extends out of the motor cavity after passing through the channel, and is connected with the reducer The input end of the brake is connected to the output end of the brake, and the output end of the reducer is connected to the hub; the casing is provided with a supporting bearing between the part near the radial inner end of the channel and the rotor support to support the rotor support. The speed reducer of the present invention can strengthen the driving torque and the braking torque at the same time, reducing the dynamic requirements on the driving motor and the brake; the supporting bearing is closer to the central axis of the hub, reducing the requirements on reliability and durability.

Description

technical field [0001] The invention relates to the field of automobiles and vehicles, in particular to a wheel hub drive assembly. Background technique [0002] In-wheel motor technology, also known as in-wheel motor technology, is characterized by the integration of power, transmission and braking devices into the wheel hub, thus greatly simplifying the mechanical parts of electric vehicles. [0003] figure 1 It is a hub system using in-wheel motor technology in the prior art, including a hub 1, a motor 2 placed in the hub 1, a brake 3 and a reducer 4, wherein the brake 3 is closer to the hub 1 than the reducer 4 The mounting surface 1a. The reducer 4 is located at the output end of the motor 2 , the driving torque output by the motor 2 can be amplified through the action of the reducer 4 , and the amplified driving torque is finally output to the wheel hub 1 . The brake 3 acts directly on the hub 1 to achieve braking. Wherein, the motor 2 is close to the inner periphe...

AI Technical Summary

Problems solved by technology

[0008] The first problem solved by the present invention is that the existing hub system has high dynamic requirements for the brake and the size of the device is large; the second problem solved is that the motor cavity in the existing hub system occupies a large space, which affects the selection of the reducer , and the reliability and durability requirements of the support bearing are too high

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