Title:
ULTRASONIC SENSOR
Document Type and Number:
WIPO Patent Application WO/2016/104415
Kind Code:
A1
Abstract:
An ultrasonic sensor (101) is provided with the following: a bottomed cylindrical case (2) having a bottom plate (2a) and side walls (2b); a piezoelectric element (3) disposed above the bottom plate (2a) inside the case (2); and a filling resin (8) filled into at least a portion of the inside of the case (2), so as to cover the piezoelectric element (3) inside the case (2). Among the inner surfaces of the case (2), at least a surface with which the filling resin (8) makes contact is a rough surface.
Inventors:
NANBU KOJI (JP)
Application Number:
PCT/JP2015/085653
Publication Date:
June 30, 2016
Filing Date:
December 21, 2015
Export Citation:
Assignee:
MURATA MANUFACTURING CO (JP)
International Classes:
H04R17/00; G01S7/521; H01L41/083
Domestic Patent References:
| WO2008047743A1 | 2008-04-24 |
Foreign References:
| JP2010050963A | 2010-03-04 | |||
| JP2012060369A | 2012-03-22 | |||
| JP2007318742A | 2007-12-06 | |||
| JP2001232294A | 2001-08-28 |
Attorney, Agent or Firm:
Fukami Patent Office, p. c. (JP)
Patent business corporation Fukami patent firm (JP)
Patent business corporation Fukami patent firm (JP)
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