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Title:
ELECTROMAGNETIC SOUNDING BODY WITH VIBRATION MOTOR
Document Type and Number:
Japanese Patent JP2001058158
Kind Code:
A
Abstract:

To provide the whole constitution of an electromagnetic sounding body with a vibration motor high in sound pressure, in the vibration motor constituted of megnetic fields of permanent magnet pieces same in magnetic polarity and an armature using two coils.

An electromagnetic sounding body 300 with a vibration motor is constituted by arranging the upper yoke 304 magnetically coupled with the upper surface of the permanent magnet pieces on a lower yoke, the vibration plate driving part 303 on the vibration plate 302 arranged on the upper yoke and an armature 100 having two coils 111A, 111B forming a bias magnetic field in the fine gap with the drive magnetic pole arranged on the lower yoke and freely rotatable with respect to the drive magnetic pole and magnetically determined in stop position by the magnetic pole of the lower yoke and the head of the needle-like terminal of a commutator 120.


Inventors:
WATANABE TOKIO
KOIKE AKIRA
Application Number:
JP1999000236189
Publication Date:
March 06, 2001
Filing Date:
August 23, 1999
Export Citation:
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Assignee:
CITIZEN ELECTRONICS
International Classes:
B06B1/04; H02K7/075; H02K23/54; H02K23/58; (IPC1-7): B06B1/04; H02K7/075; H02K23/54; H02K23/58
Attorney, Agent or Firm:
高宗 寛暁