Title:
ELECTROMAGNETIC TYPE SOUND PRODUCING BODY
Document Type and Number:
Japanese Patent JP2001290484
Kind Code:
A
Abstract:
To provide an electromagnetic sound producing body with which the vibration characteristics of a diaphragm are stabilized.
A groundsel cover 2 and upper cover 3 constituting a casing 1 are united to form a sound releasing hole 1a. A yoke 4, magnet 5, coil 6, diaphragm 7 and exciting piece 8 are all built into the groundsel cover 2 side. The exciting piece 8 has a curved sectional shape and its central convex surface is welded to the center of the diaphragm 7. A pair of insertion holes 2b penetrate the outer side of a bank 2a of the groundsel cover 2. A compression coil spring 10 as an external connecting terminal is inserted into a hole 9c of a lead frame 9 in the insertion hole 2b and is soldered thereto, by which conduction is obtained.
More Like This:
| JP3664096 | BUZZER DRIVING DEVICE |
Inventors:
KUWABARA MUTSUMI
ASAHINA MASATO
ASAHINA MASATO
Application Number:
JP2000108686A
Publication Date:
October 19, 2001
Filing Date:
April 10, 2000
Export Citation:
Assignee:
CITIZEN ELECTRONICS
International Classes:
G10K9/13; H04R7/00; H04R11/00; H04R13/00; H04R31/00; (IPC1-7): G10K9/13; H04R13/00; H04R31/00
Attorney, Agent or Firm:
Takamune Hiroaki