Vibration actuator for pager

Details Vibration actuator for pager Vibration actuator for pager

1997-02-13

1999-05-11

Ramirez, Nestor

Electrical generator or motor structure

Dynamoelectric

Rotary

310 13, 34038473, 381152, 381192, H04R25/00

Patent

active

059030763

ABSTRACT:
A vibration actuator for effecting paging is provided in which a vibrating section of an electroacoustic transducer is driven using low frequencies to collide it against a fixed section, and the vibration generated from the collision is transferred as external vibration. The vibrating section of a coil and the fixed section are bonded via an elastic member provided therebetween. The vibration generated at the time of collision can be effectively increased by flexibly supporting a magnetic circuit composed of a magnet, a yoke, etc. and by driving the magnetic circuit with alternating current which has a polarity. To permit easier assembly and to prevent damage or deterioration in characteristics, it is preferable to provide an annular molded member, which has hook-like projections, around the magnetic circuit and to support the magnetic circuit by a rubber member attached to the hook-like projections.

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patent: 5184037 (1993-02-01), Kobayashi et al.
patent: 5682132 (1997-10-01), Hiroyoshi et al.

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