公开(公告)号：US20170054345A1

公开(公告)日：2017-02-23

申请号：US15240307

申请日：2016-08-18

Applicant: Johnson Electric S.A.

Inventor： Min LI ,  Jin Jin WU ,  Kok Ang CHONG ,  Cheng Zhuang ZHU

IPC: H02K9/06 ,  H02K5/20 ,  F04D29/58 ,  F04D25/06 ,  F04D29/28

Abstract: A cover assembly and a brushed motor are provided. The cover assembly includes a mounting portion and a flow guide portion. The mounting portion defines a first opening through the mounting portion along an axial direction of the motor. The flow guide portion includes a top wall disposed at one end thereof away from the mounting portion along the motor axial direction. The fluid guide portion defines a second opening extending to an inner wall surface of the top wall in the motor axial direction. The first opening and the second opening are in flow communication with each other. The flow guide portion further defines a winding flow passage. The flow passage has an inner inlet in flow communication with the second opening and an outer outlet in flow communication with an outside environment. The present invention facilitates absorption of the motor noise and hence reduction of the output noise.

Abstract translation: 提供了盖组件和带刷电动机。 盖组件包括安装部分和流动引导部分。 安装部分沿着马达的轴向限定通过安装部分的第一开口。 导流部包括沿着电动机轴向设置在远离安装部的一端的顶壁。 流体引导部分限定了在马达轴向方向上延伸到顶壁的内壁表面的第二开口。 第一开口和第二开口彼此流动连通。 流动引导部分进一步限定了一个卷绕流动通道。 流动通道具有与第二开口流动连通的内部入口和与外部环境流动连通的外部出口。 本发明有助于吸收电机噪声并因此降低输出噪声。