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Title:
BRUSH ELECTRIC MOTOR, AND ELECTRIC BRUSH STRUCTURE THEREOF
Document Type and Number:
WIPO Patent Application WO/2021/098649
Kind Code:
A1
Abstract:
An electric brush structure, comprising a contact surface. When the electric brush structure is arranged in an electric motor, the contact surface faces a commutator of the electric motor, the contact surface has a first end and a second end in an axial direction of the electric motor, a first flange is provided at the first end of the contact surface, a second flange is provided at the second end of the contact surface, when the electric brush structure is arranged in a direct-current electric motor, end faces of the first flange and the second flange make contact with the commutator, the first flange and the second flange are staggered with respect to a tangential direction of the direct-current electric motor, and the first flange and the second flange are respectively connected to commutator segments at both ends of a space between the commutator segments in a commutated state. According to the present invention, an electric brush makes quick contact with the adjacent next commutator segment so as to complete commutation, thereby reducing the generation of electric arcs, and preventing noise generation caused by swinging of an armature.

Inventors:
SHI JINGXIN (CN)
ZHAO SIJUN (CN)
ZHANG PINGMAN (CN)
LOUIE YUENTUNG (CN)
ZHENG JINGCHAO (CN)
WANG XIUXIAN (CN)
LI SHENGDU (CN)
OUYANG JUNJUN (CN)
WANG ZHI (CN)
Application Number:
PCT/CN2020/129118
Publication Date:
May 27, 2021
Filing Date:
November 16, 2020
Export Citation:
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Assignee:
JOHNSON ELECTRIC GUANGDONG CO LTD (CN)
International Classes:
H01R39/24; H02K13/10; H02K23/00
Domestic Patent References:
WO2003028190A12003-04-03
Foreign References:
CN211404958U2020-09-01
DE4438868A11996-05-15
DE4438868A11996-05-15
DE3148996A11983-06-23
CN107800233A2018-03-13
EP0540306B11996-04-03
Attorney, Agent or Firm:
SHINY INTELLECTUAL PROPERTY FIRM (CN)
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