Title:
MAGNETIC SOUND GENERATOR
Document Type and Number:
Japanese Patent JP3255171
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide an excellent magnetic acoustic converter with improved shock resistance in a magnetic sound generator used for radiating sound (calling, information, warning, etc.), in various industrial fields.
SOLUTION: In this magnetic acoustic converter, a plate 14, a magnet 17 arranged on this plate 14, and a coil 16 are integrated into a single body by molding them with a mold part 23 of a frame 22 at the time of molding a frame 22, and the integration by molding prevents the coil 16 and magnet 17 from coming off due to impacts after they are built in the device, thus improving the reliability.
Inventors:
Hiroko Kawai
Shinji Morimoto
Shinji Morimoto
Application Number:
JP2000220459A
Publication Date:
February 12, 2002
Filing Date:
August 19, 1988
Export Citation:
Assignee:
Matsushita Electric Industrial Co., Ltd
International Classes:
G10K9/13; H04R11/02; H04R15/00; H04R31/00; (IPC1-7): G10K9/13; H04R15/00; H04R31/00
Domestic Patent References:
| JP5642291A |
Attorney, Agent or Firm:
Fumio Iwahashi (2 others)