Title:
ULTRASONIC TRANSDUCER
Document Type and Number:
WIPO Patent Application WO/2021/172094
Kind Code:
A1
Abstract:
An ultrasonic transducer (4) comprising a transducer case (5) and an ultrasonic element (6). The transducer case is formed in a bottomed cylindrical shape having: a side plate section (51) cylindrically formed around a central axis (DA); and a floor plate section (52) closing off one end of the side plate section in the axial direction parallel to the central axis. The ultrasonic element converts electric signals and ultrasonic vibrations and is fixedly supported by the floor plate section so as to face an internal space (53) surrounded by the side plate section and the floor plate section. An eccentricity-forming section (523) formed by a recess or protrusion is provided asymmetrically to the central axis, in an outer surface (522) which is a rear surface of an inner surface (521) which is a surface facing the internal space.
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Inventors:
SATAKE MASAYOSHI (JP)
ISHII TAKESHI (JP)
KONDOU DAI (JP)
NOMURA TAKUYA (JP)
ISHII TAKESHI (JP)
KONDOU DAI (JP)
NOMURA TAKUYA (JP)
Application Number:
PCT/JP2021/005691
Publication Date:
September 02, 2021
Filing Date:
February 16, 2021
Export Citation:
Assignee:
DENSO CORP (JP)
International Classes:
H04R1/32; H04R17/00
Foreign References:
| JP2006165923A | 2006-06-22 | |||
| JP2009036623A | 2009-02-19 | |||
| JP2007318742A | 2007-12-06 |
Attorney, Agent or Firm:
YOU-I PATENT FIRM (JP)
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