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Title:
ULTRASONIC TRANSDUCER AND NON-CONTACT TACTILE SENSATION PRESENTATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/259941
Kind Code:
A1
Abstract:
[Problem] To provide: an ultrasonic transducer that has good sound pressure and stable frequency characteristics, and that has a structure suitable for size and profile reduction; and a non-contact tactile sensation presentation device. [Solution] An ultrasonic transducer according to the present invention comprises a housing and an ultrasonic vibrator. The housing is provided with a vibration plate having a first principal surface and a second principal surface of an opposite type from the first principal surface, said vibration plate having an inner peripheral region, an outer peripheral region surrounding the inner peripheral region, and an intermediate region positioned between the inner peripheral region and the outer peripheral region, wherein: the intermediate region has a plurality of openings that penetrate the vibration plate, and a beam part that is positioned between the plurality of openings and that connects the inner peripheral region and the outer peripheral region; and on the first principal surface side of the vibration plate, an inner space that communicates with an outer space via the plurality of openings is formed. The ultrasonic vibrator is joined to the inner peripheral region of the first principal surface, and accommodated in the inner space.

Inventors:
GOTO TAKAYUKI (JP)
ISHII SHIGEO (JP)
SHIMIZU HIROYUKI (JP)
KISHIMOTO SUMIAKI (JP)
NAMIKAWA YUICHI (JP)
Application Number:
PCT/JP2022/022352
Publication Date:
December 15, 2022
Filing Date:
June 01, 2022
Export Citation:
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Assignee:
TAIYO YUDEN KK (JP)
International Classes:
H04R17/00
Domestic Patent References:
WO2008143463A22008-11-27
Foreign References:
JP2007159143A2007-06-21
JP2009148880A2009-07-09
Attorney, Agent or Firm:
MINAMI AOYAMA PATENT AND TRADEMARK ATTORNEYS (JP)
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