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Patent Searching and Data


Title:
DC MOTOR
Document Type and Number:
Japanese Patent JP2013236521
Kind Code:
A
Abstract:

To enhance the productivity and assemblability of a DC motor while reducing vibration and noise due to front bearing holding.

The DC motor with a brush includes a case 11 formed into cup shape, a brush plate 17 covering the opening of the case, a rotor housed in the case and having an armature 43 and a commutator 22, a brush 21 pressure-welded to the commutator, and a rotating shaft 32 having a rear bearing 34 attached to one end and a front bearing 33 attached to an intermediate portion with the armature being attached fixedly between these rear bearing and front bearing. The brush plate is made of resin, a metallic ring-like collar 5 molded integrally with the brush plate is disposed on the inner peripheral side of the resin brush plate and on the anti-brush side, and then the front bearing is pressure-welded to the collar.


Inventors:
EGUCHI AKIHIKO
Application Number:
JP2012108966A
Publication Date:
November 21, 2013
Filing Date:
May 11, 2012
Export Citation:
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Assignee:
KOKUSAN DENKI CO
International Classes:
H02K5/14; H02K5/16
Domestic Patent References:
JP2010074890A2010-04-02
JPH10327566A1998-12-08
JP2008172943A2008-07-24
JP2003070203A2003-03-07
Attorney, Agent or Firm:
ポレール特許業務法人