Title:
ULTRASONIC SENSOR AND MANUFACTURING METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2013/051524
Kind Code:
A1
Abstract:
An ultrasonic sensor (101) is provided with: a bottomed cylindrical case (31) having a bottom section (31b) and side wall section (31a); a piezoelectric element (32) disposed inside the bottom of the case (31); terminals (43), which are electrically connected to the piezoelectric element (32) via a conductive member inside the case (31), and protrude to the outside of the case (31); a terminal holding member (41) which holds the terminals (43); a buffer member (33) which holds the terminal holding member (41) inside the case (31); a damping member (39) which is disposed along the inner peripheral surface of the side wall section (31a) of the case (31); and a filler member (36) which is filled in above the damping member (39) and the buffer member (33), inside the case (31). A gap (40) is disposed between the damping member (39) and the buffer member (33). This configuration prevents vibration leakages to the terminals, improving reverberation characteristics resulting from vibration leakages.
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Inventors:
ISOMOTO MAYUMI (JP)
Application Number:
PCT/JP2012/075446
Publication Date:
April 11, 2013
Filing Date:
October 02, 2012
Export Citation:
Assignee:
MURATA MANUFACTURING CO (JP)
International Classes:
H04R17/00; H04R31/00
Domestic Patent References:
| WO2011090201A1 | 2011-07-28 | |||
| WO2007029506A1 | 2007-03-15 |
Foreign References:
| JPH04238496A | 1992-08-26 | |||
| JP2011077919A | 2011-04-14 |
Attorney, Agent or Firm:
Kaede Patent Attorneys' Office (JP)
Patent business corporation Kaede Patent Attorneys' Office (JP)
Patent business corporation Kaede Patent Attorneys' Office (JP)
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