Direct current vibration motor and armature structure

Details Direct current vibration motor and armature structure Direct current vibration motor and armature structure

2005-05-10

2005-05-10

Chiang, Jack (Department: 2642)

Telephonic communications

Terminal

Housing or housing component

Reexamination Certificate

active

06891949

ABSTRACT:
The direct current vibration motor comprises a stator, a rotor rotatably attached on this stator, and a cylindrical cover for sealing the rotor. The stator has four permanent magnets arranged in a ring-like configuration and magnetized in an axial direction. The rotor is provided with an armature eccentrically fixed to a portion in the circumferential direction of the rotation shaft. The armature comprises a first coil and a second coil. Furthermore, the armature is provided with a pin formed of a magnetic body for regulating the static position so that the first coil and the second coil are fixed at a position where the first coil and the second coil are deviated from the central position of the magnetic pole of the stator. Current is supplied to the coils with the commutator and the brushes arranged with the spatial phase angle of 90°.

REFERENCES:
patent: 4-355642 (1992-12-01), None
patent: 6-205565 (1994-07-01), None
patent: 9-327150 (1997-12-01), None
patent: 10-174361 (1998-06-01), None
patent: 10-336983 (1998-12-01), None
Patent Abstract of Japan 06205565 A, Jul. 22, 1994.
Patent Abstract of Japan 10336983 A, Dec. 18, 1998.
Patent Abstract of Japan 09327150 A, Dec. 16, 1997.
Patent Abstract of Japan 10174361 A, Jun. 26, 1998.

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