Vibration motor

Details Vibration motor Vibration motor

2005-09-20

2005-09-20

Lam, Thanh (Department: 2834)

Electrical generator or motor structure

Dynamoelectric

Rotary

C310S179000, C310S208000

Reexamination Certificate

active

06946763

ABSTRACT:
A vibration motor includes: a lower case provided with a lower board; an upper case coupled with the lower case; a four-pole magnet provided on the lower case; a shaft supported between the lower case and the upper case; a rotor rotatably supported by the shaft with an eccentricity, in which a pair of coils is provided in the rotor at an angle ranging form 135° to 142° between centerlines thereof; a commutator formed on a bottom of the rotor with six segments; and a pair of brushes having lower parts contacted with the lower board and upper parts contacted with the segments of the commutator at an angle of 90° therebetween.

REFERENCES:
patent: 6291915 (2001-09-01), Yamaguchi
patent: 6630759 (2003-10-01), Yamaguchi
patent: 6836039 (2004-12-01), Choi et al.

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