Title:
DC MOTOR WITH PLATE BRUSHES
Document Type and Number:
WIPO Patent Application WO/2011/155004
Kind Code:
A1
Abstract:
It is an object to recover a residual magnetic energy of an armature coil of a DC motor with a simple and compact brush structure. Upper sub brush (53), lower sub brush (54), upper recovery diode (61) and a lower recovery diode (62) are added to the conventional brush structure with main brushes (51, 52). Main brushes (51, 52) and sub brushes (53, 54) are made of a metal plate each. Cross-angle (X1) between the sub brush and the main brush, which are adjacent each other in the axial direction across a small distance, is less than 60 degrees. The recovery current caused by the residual magnetic energy flows via the recovery diode and the sub brush. The sub brushes (53,54), which are adjacent each other in the axial direction, can have planetary-gear-shape. The sub brushes (53, 54) rotate around a sun-gear-shaped commutator.
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Inventors:
TANAKA, Shouichi (2-601, Oumorihachiryuu Moriyama-ku, Nagoya-sh, Aichi 28, 46300, JP)
Application Number:
JP2010/003901
Publication Date:
December 15, 2011
Filing Date:
June 11, 2010
Export Citation:
Assignee:
THREE EYE CO., LTD. (4-18, Wakamiya-cho Nakamura-ku, Nagoya-sh, Aichi 23, 45300, JP)
TANAKA, Shouichi (2-601, Oumorihachiryuu Moriyama-ku, Nagoya-sh, Aichi 28, 46300, JP)
TANAKA, Shouichi (2-601, Oumorihachiryuu Moriyama-ku, Nagoya-sh, Aichi 28, 46300, JP)
International Classes:
H02K13/00
Attorney, Agent or Firm:
OHKAWA, Hiroshi (2-5 Meieki 3-chome, Nakamura-ku Nagoya-sh, Aichi 02, 45000, JP)
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