Direct current brushless vibration motor

Details Direct current brushless vibration motor Direct current brushless vibration motor

2005-12-08

2009-02-03

Le, Dang D (Department: 2834)

Electrical generator or motor structure

Dynamoelectric

Rotary

C310S268000

Reexamination Certificate

active

07485993

ABSTRACT:
A direct current (DC) brushless vibration motor includes an inductive coil as the stator, and a magnetic element, which has a plurality of coplanar magnetic poles, as the rotor. The inductive coil is a single annular coil formed by a singly-wound conductive wire. The winding area corresponds to two magnetic poles of the magnetic element of the like polarity at opposite sides. The magnetic element has a centrifugal slot to make the gravity center of the magnetic element eccentric from the axis. When current is input into the inductive coil to form a magnetic field, the magnetic element and the magnetic field generated by the inductive coil repulse each other to generate rotation. The eccentric gravity center of the magnetic element can generate the vibration desired.

REFERENCES:
patent: 6465921 (2002-10-01), Horng et al.
patent: 6522037 (2003-02-01), Lee et al.
patent: 6573627 (2003-06-01), Sun
patent: 6700275 (2004-03-01), Horng et al.
patent: 6744163 (2004-06-01), Kajiwara et al.
patent: 6836039 (2004-12-01), Choi et al.
patent: 6850019 (2005-02-01), Gerfast

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