Title:
VIBRATION DETECTION DEVICE
Document Type and Number:
WIPO Patent Application WO/2007/129500
Kind Code:
A1
Abstract:
A vibration detection device highly practical and having stable sensitivity and anti-noise characteristics. The vibration detection device (1) has silicone (4), one side of which can be in contact with a vibration source; a microphone element (3) having a vibration diaphragm (33) in contact with the other side of the silicone (4); and an inner case (2) for receiving the silicone (4) and the microphone element (3). On the inner wall of the inner case (2) for receiving the silicone (4) is stretched a rib (23) between the vibration diaphragm (33) and that surface of the silicone (4) which is in contact with the vibration source, and the rib (23) is embedded in the silicone (4).
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Inventors:
FUJII KAZUYA (JP)
Application Number:
PCT/JP2007/053273
Publication Date:
November 15, 2007
Filing Date:
February 22, 2007
Export Citation:
Assignee:
MITSUMI ELECTRIC CO LTD (JP)
FUJII KAZUYA (JP)
FUJII KAZUYA (JP)
International Classes:
G01H11/06; G10K11/02; H04R1/02
Foreign References:
| JP2004080577A | 2004-03-11 | |||
| US3663842A | 1972-05-16 | |||
| JPH03186100A | 1991-08-14 |
Attorney, Agent or Firm:
ARAFUNE, Hiroshi et al. (5F.Nikko Kagurazaka Bldg.,18, Iwatocho, Shinjuku-ku, Tokyo 32, JP)
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