The invention discloses an electric power steering gear. The electric power steering gear comprises a shell; the steering shaft is arranged in the shell in a reciprocating displacement manner and extends out of the two ends of the shell, and a shaft body of the steering shaft is provided with a rack part and a screw part; the planetary roller nut is assembled in the shell and is in threaded connection with the screw rod part; the motor is controlled by an engine control unit (ECU), is arranged in the shell and is provided with an outer rotating rotor, and the outer rotating rotor is combined with the planetary roller nut to drive the planetary roller nut to rotate so as to drive the steering shaft to move in the shell in a reciprocating manner; a first waterproof ring is arranged between the planetary roller nut and the shell, and a second waterproof ring is clamped between the planetary roller nut and the hollow stator of the motor, so that the motor is sealed and waterproof, and the purpose that the motor power of the electric power steering gear does not lose efficacy is achieved.

    本发明公开了一种电动助力转向器,其包含一壳体;一转向轴,能够往复位移地设置在壳体内并伸出壳体两端,其轴体具有齿条部及螺杆部;一行星滚柱螺帽,其组设在壳体内并螺接螺杆部;一马达,其受引擎控制单元(ECU)控制,其设置于壳体内,其具有一外转转子,外转转子结合于行星滚柱螺帽以驱动其转动,进而带动转向轴于壳体内往复位移;于行星滚柱螺帽与壳体之间设有一第一防水圈,行星滚柱螺帽与马达中空定子之间夹设有一第二防水圈,藉此提供马达形成密闭防水的效用,使电动助力转向器达到马达动力不失效的目的。


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    Title :

    Electric power steering gear


    Additional title:

    电动助力转向器


    Contributors:
    LI MAODUN (author)

    Publication date :

    2024-05-07


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B62D MOTOR VEHICLES , Motorfahrzeuge



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