Title:
DC MOTOR
Document Type and Number:
Japanese Patent JP2016171694
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a DC motor capable of having its overall axial length shortened while securing an insulation space between a riser of a commutator segment and a core-side connection plate 16.SOLUTION: A core-side position restriction part which restricts a position relative to a core-side connection plate 16 is provided on an axial core side of a brush holder 14. The core-side position restriction part has a projection-shaped part 26 which restricts a peripheral position for the core-side connection plate 16, and a plate fitting part 27 which restricts axial-directional and external-diameter-directional positions for the core-side connection plate 16. The projection-shaped part 26 is formed having its peripheral width A1 larger than a peripheral width B of a brush. Further, a fitting groove 27a formed at the plate fitting part 27 is formed at a position axially lapping a core-side end of the brush 10. Consequently, the axial distance between the core-side connection plate 16 and an anti-core side connection plate 17 can be made short, so the overall length can be made shorter than that of a motor having a conventional structure.SELECTED DRAWING: Figure 1
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| JP2003299321 | BRUSH DEVICE |
Inventors:
HIRABAYASHI TAKASHI
Application Number:
JP2015050569A
Publication Date:
September 23, 2016
Filing Date:
March 13, 2015
Export Citation:
Assignee:
DENSO CORP
International Classes:
H02K13/00; H01R39/38
Domestic Patent References:
| JP2011520414A | 2011-07-14 | |||
| JPH06327197A | 1994-11-25 | |||
| JP2011505113A | 2011-02-17 | |||
| JPH10243592A | 1998-09-11 |
Foreign References:
| US20080083556A1 | 2008-04-10 |
Attorney, Agent or Firm:
Kenji Ishiguro
Shinji Hase
Naoko Ikuta
Shinji Hase
Naoko Ikuta