In-wheel motor assembly

Abstract

The present invention provides an in-wheel motor assembly, including: a motor assembly, which has a stator and a rotor, and generates rotational driving force; a reducer assembly, which has a planetary gear set and a reverse gear set, wherein the planetary gear set reducing the rotational driving force of the motor assembly for the first time or increasing the torque, and the counter gear set is connected with the planetary gear set to perform the second deceleration of the rotational driving force of the motor assembly; the hub assembly, which is connected to the speed reducer assembly, transmits the rotational driving force decelerated or increased in torque in the speed reducer assembly to the wheels of the vehicle, and has a rotational axis different from that of the rotor The hub inner ring that rotates as the center and the hub outer ring that accommodates the hub inner ring and is fixedly supported; and a knuckle member that fixes the motor assembly, the reducer assembly, and the hub assembly The support is combined with the body through the support rod and the lower arm.

Description

technical field [0001] The invention relates to an in-wheel motor assembly, in particular to an in-wheel motor assembly capable of driving a vehicle through a motor arranged inside a wheel. Background technique [0002] In-wheel motor system (In-wheel motor system) does not use a large single motor in electric vehicles, plug-in hybrid cars, fuel cell vehicles, etc., which use electric energy as the main power source. Rather, it is a system in which motors are separately installed in the wheels to perform decentralized control, and the inside of the wheels is composed of an integrated system such as drive motors, brakes, bearings, and speed reducers. Compared with the system driven by a large-capacity motor, the in-wheel motor system has technical advantages such as high energy efficiency, easy configuration of an electric four-wheel drive system, and improved vehicle driving stability by independently driving and controlling the left and right wheels. [0003] Generally spe...

AI Technical Summary

Problems solved by technology

This requires the production and installation of a special wheel hub that matches the in-wheel motor system, and there is a problem that the existing wheel cannot be used for the in-wheel motor system.

In addition, since the torque is increased by the second deceleration of the planetary gear, there is a problem of increasing the capacity of the planetary gear with a complex structure. At the same time, in order to ensure sufficient structural rigidity, the width, outer diameter, etc. should be designed become larger, so it will also become a factor that leads to an increase in cost

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