Flat coreless vibrator motor

Details Flat coreless vibrator motor Flat coreless vibrator motor

1990-05-22

1991-07-30

Stephan, Steven L.

Electrical generator or motor structure

Dynamoelectric

Rotary

310 81, 3403111, 340407, H02K 7075

Patent

active

050362399

ABSTRACT:
A flat coreless vibrator motor includes a casing for housing the motor, a shaft rotatably supported by the casing, a rotor mounted on the shaft and being generally in the shape of a sector, the shaft being disposed at the center of a circle, along which a generally arc-shaped outer periphery of the sector generally extends. At least three armature coils are provided on the rotor and are angularly arranged in such a manner that these armature coils do not overlap each other. A magnet is mounted on the casing so as to generate a magnetic flux. A commutator and brushes cooperate with each other to supply electric power to the armature coils. Since the rotor is eccentric, vibrations are produced during the rotation of the rotor.

REFERENCES:
patent: 3348086 (1967-10-01), Monma
patent: 3584249 (1971-06-01), Murphy
patent: 4034246 (1977-07-01), Nakashima
patent: 4864276 (1989-09-01), Tribbey et al.
patent: 4931765 (1990-06-01), Rollins et al.

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