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Patent Searching and Data


Title:
PIEZOELECTRIC VIBRATION SENSOR
Document Type and Number:
WIPO Patent Application WO/2013/027741
Kind Code:
A1
Abstract:
This piezoelectric vibration sensor is provided with: a piezoelectric structural body, which includes a piezoelectric element firmly fixed to a metal plate; and a base that supports the piezoelectric structural body. In the piezoelectric vibration sensor, the piezoelectric structural body is supported by means of a double-supported beam structure, and a displacement quantity increasing section that increases piezoelectric structural body displacement in the thickness direction with respect to external vibration is provided. The displacement quantity increasing section is formed at a position further toward the center side of the piezoelectric element than at least a piezoelectric element end portion in the longitudinal direction.

Inventors:
KASAI, Shigeru (7-1Shiba 5-chome, Minato-k, Tokyo 01, 〒1088001, JP)
葛西 茂 (〒01 東京都港区芝五丁目7番1号日本電気株式会社内 Tokyo, 〒1088001, JP)
TAKATA, Soichiro (7-1Shiba 5-chome, Minato-k, Tokyo 01, 〒1088001, JP)
高田 宗一朗 (〒01 東京都港区芝五丁目7番1号日本電気株式会社内 Tokyo, 〒1088001, JP)
SHINODA, Shigeki (7-1Shiba 5-chome, Minato-k, Tokyo 01, 〒1088001, JP)
Application Number:
JP2012/071111
Publication Date:
February 28, 2013
Filing Date:
August 15, 2012
Export Citation:
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Assignee:
NEC CORPORATION (7-1Shiba 5-chome, Minato-ku Tokyo, 01, 〒1088001, JP)
日本電気株式会社 (〒01 東京都港区芝五丁目7番1号 Tokyo, 〒1088001, JP)
KASAI, Shigeru (7-1Shiba 5-chome, Minato-k, Tokyo 01, 〒1088001, JP)
葛西 茂 (〒01 東京都港区芝五丁目7番1号日本電気株式会社内 Tokyo, 〒1088001, JP)
TAKATA, Soichiro (7-1Shiba 5-chome, Minato-k, Tokyo 01, 〒1088001, JP)
高田 宗一朗 (〒01 東京都港区芝五丁目7番1号日本電気株式会社内 Tokyo, 〒1088001, JP)
International Classes:
G01P15/09; H01L41/08; H03H9/17
Foreign References:
JPS57162534U
JP3017442U
JP2004251702A
JPS57192441U
JPH06308149A
JPS58178225A
Attorney, Agent or Firm:
SHIMOSAKA, Naoki (7-1Shiba 5-chome, Minato-k, Tokyo 01, 〒1088001, JP)
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Claims: