Invention Grant
- Patent Title: DC motor
-
Application No.: US16836318Application Date: 2020-03-31
-
Publication No.: US11303082B2Publication Date: 2022-04-12
- Inventor: Takashi Hirabayashi
- Applicant: DENSO CORPORATION
- Applicant Address: JP Kariya
- Assignee: DENSO CORPORATION
- Current Assignee: DENSO CORPORATION
- Current Assignee Address: JP Kariya
- Agency: Oliff PLC
- Priority: JPJP2019-070200 20190401
- Main IPC: H01R39/04
- IPC: H01R39/04 ; H01R39/02 ; H01R39/22 ; C22C32/00 ; H02K13/10 ; C04B35/52 ; H01R39/26

Abstract:
A DC motor is provided that can suppress a commutator from wearing. A DC motor including a commutator formed of copper or a copper alloy of 99% or more copper, and a brush pressed against and in contact with the commutator, wherein the brush is composed of a sintered compact including graphite and copper powder, hard compound particles higher in hardness than any of the copper or the copper alloy and the graphite or the copper powder are contained in at least one of the commutator and the brush and are scattered on or near a contact surface of the commutator with the brush at least during use.
Public/Granted literature
- US20200313376A1 DC MOTOR Public/Granted day:2020-10-01
Information query