Title:
MOTOR
Document Type and Number:
WIPO Patent Application WO/2005/031951
Kind Code:
A1
Abstract:
A motor comprising a stator (1) consisting of a magnetic element around which no field magnetic winding is wound, a rotor (4) disposed on the inner side of the stator (1) and wound with a rotor winding (5), a commutator (7), and a brush (8), an electromagnet being formed by a current supplied to the rotor winding (5) via the brush (8) and the commutator (7), wherein a plurality of protrusions (21) are intermittently formed on the inner peripheral surface of the stator (1), a brush rotation/retention unit (9) for rotating and retaining the brush (8) is provided such that the magnetic pole axis of the electromagnet is deviated a specified angle from the center axis of protrusions (21), and an attraction force between the electromagnet and the protrusions (21) is used to rotate the rotor (4), whereby the motor has a simple, low-cost, easy-to-downsize structure, and can increase a magnetic flux density and an efficiency.
Inventors:
HANEDA MASAJI (JP)
Application Number:
PCT/JP2004/005508
Publication Date:
April 07, 2005
Filing Date:
April 16, 2004
Export Citation:
Assignee:
NTT DATA EX TECHNO CORP (JP)
HANEDA MASAJI (JP)
HANEDA MASAJI (JP)
International Classes:
H02K23/04; H02K23/18; (IPC1-7): H02K23/04; H02K41/032
Foreign References:
| JPH08196067A | 1996-07-30 | |||
| JPS52142206A | 1977-11-28 | |||
| JP2002335650A | 2002-11-22 | |||
| JPH0837767A | 1996-02-06 |
Attorney, Agent or Firm:
Sakai, Hiroaki (Kasumigaseki Building 2-5, Kasumigaseki 3-chom, Chiyoda-ku Tokyo, JP)
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