Title:
BONE CONDUCTION DEVICE AND TYMPANUM THEREOF
Document Type and Number:
WIPO Patent Application WO/2005/125266
Kind Code:
A1
Abstract:
A bone conduction device, which can be efficiently mounted, without generating a dead space, in a case having a limited installation space, such as a cellular phone case having a large display screen, and a tympanum for such bone conduction device are provided. 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 a magnet arranging axis.
Inventors:
FUKUDA MIKIO (JP)
Application Number:
PCT/JP2005/010917
Publication Date:
December 29, 2005
Filing Date:
June 15, 2005
Export Citation:
Assignee:
TEMCO JAPAN (JP)
FUKUDA MIKIO (JP)
FUKUDA MIKIO (JP)
International Classes:
H04R1/00; H04R1/10; H04R9/02; H04R11/06; H04R25/00; (IPC1-7): H04R1/00; H04R1/10; H04R9/02; H04R25/00
Foreign References:
| JP2001313989A | 2001-11-09 | |||
| JPH11355871A | 1999-12-24 | |||
| JP2003340370A | 2003-12-02 | |||
| JP2002199480A | 2002-07-12 |
Other References:
See also references of EP 1768445A1
Attorney, Agent or Firm:
Saitoh, Haruo (Kyobashi 2-chome Chuo-ku, Tokyo 31, JP)
Download PDF: