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Patent Searching and Data


Title:
DIRECT-CURRENT MOTOR BRUSH HOLDER ASSEMBLY
Document Type and Number:
Japanese Patent JP2020188635
Kind Code:
A
Abstract:
To reduce a likelihood of a protrusion coming into contact with a busbar even if the protrusion suffers damage due to centrifugal force.SOLUTION: A busbar 20 is engaged with each brush holder 50 and is electrically connected to a positive brush 30. At a portion further in a first direction Di than the brush holder 50 in a rotor 10, there are provided a coil 17, and a protrusion 16 extending in an outward direction Db electrically connecting the coil 17 to a commutator segment 15. Each brush portion 30 end surface 31b faces the outward direction Db, the busbar 20 has an engagement portion 25 with an end 25a facing an inward direction Da, and the end 25a of the engagement portion 25 is further in the outward direction than the end surface portion 31b. An end 20ii of the busbar 20 facing a second direction Dii is further in the second direction Dii than an end 30i of the brush 30 facing the first direction Di. An end 20i of the busbar 20 facing the first direction Di is further in the second direction Dii than an end 16ii of the protrusion 16 facing the second direction Dii.SELECTED DRAWING: Figure 3

Inventors:
ASAI MOTOYOSHI
Application Number:
JP2019093190A
Publication Date:
November 19, 2020
Filing Date:
May 16, 2019
Export Citation:
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Assignee:
DENSO CORP
International Classes:
H02K13/00; H01R39/38
Attorney, Agent or Firm:
Tsuyoshi Yamada
Kyoko Hino
Hiroshi Matsuda
Yusuke Kita