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Patent Searching and Data


Title:
BONE CONDUCTION DEVICE AND TYMPANUM THEREOF
Document Type and Number:
Japanese Patent JP2006033787
Kind Code:
A
Abstract:

To provide a bone conduction device, which can be mounted efficiently, without generating dead spaces, when having a limited installation space, such as a cellular phone case having a large display screen, and a tympanum for such bone conduction device.

A magnetic sound converting device has an outer magnetic structure wherein a voice coil 3 is mounted on a center magnetic pole 2 of a yoke 1 and a magnet 4 is arranged on the outer side of the voice coil 3. The yoke 1 and the center magnetic pole 2 thereof are vertically long, the magnet 4 is arranged on the short side edge parts on the both sides of the yoke, and a tympanum-fixing part 6 is arranged on the outer side of each magnet 4 on the magnet-arranging axis.


Inventors:
FUKUDA MIKIO
Application Number:
JP2004000319255
Publication Date:
February 02, 2006
Filing Date:
November 02, 2004
Export Citation:
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Assignee:
TEMCO JAPAN
International Classes:
H04R1/00; H04R1/02; H04R1/10; H04R7/04; H04R9/02; H04R11/06; H04R25/00
Attorney, Agent or Firm:
斎藤 晴男