公开(公告)号：US09435400B2

公开(公告)日：2016-09-06

申请号：US13768305

申请日：2013-02-15

Applicant: Johnson Electric S.A.

Inventor： Chi Wang Cheung ,  Zhong Ping Wu ,  Hong Yu Ding

IPC: F16H1/16 ,  F16H57/00

CPC classification number: F16H1/16 ,  F16H57/0025 ,  Y10T74/19828

Abstract: A drive unit includes an electric motor, a worm shaft coupled to the motor, a worm gear engaging with the worm shaft, and an output shaft connected to the worm gear. The motor has a motor shaft on which the worm shaft is fixed. The worm shaft is made of plastic. The drive unit further includes a metallic sleeve press fitted to the motor shaft. An outer profile of the sleeve is non-circular. A correspondingly shaped receiving hole is formed in the worm shaft to receive the sleeve. The sleeve rotates with the motor shaft and drives the worm shaft.

Abstract translation: 驱动单元包括电动机，联接到电动机的蜗杆轴，与蜗杆轴啮合的蜗轮以及与蜗轮连接的输出轴。 电机有一个电机轴，蜗杆轴固定在其上。 蜗杆轴由塑料制成。 驱动单元还包括装配到电动机轴的金属套筒压力。 套筒的外形是非圆形的。 在蜗杆轴上形成相应形状的接收孔，以容纳套筒。 套筒与电机轴一起旋转并驱动蜗杆轴。