Transducer and method of producing transducer

Patent metadata

Field	Value
Publication number	US-2024074318-A1
Application number	US-202118259410-A
Country	US
Kind code	A1
Filing date	Dec 9, 2021
Priority date	Jan 6, 2021
Publication date	Feb 29, 2024
Grant date	—

Abstract

[Object] To provide a transducer capable of providing a high degree of freedom in deformation and suppressing a risk of breakage and a method of producing the transducer. [Solving Means] In order to achieve the above-described object, a transducer according to an embodiment of the present technology includes an elastomer. The elastomer extends along a predetermined axis direction, and has both end portions in which at least two electrodes having followability are disposed on both sides around a predetermined axis in the predetermined axis direction, the both end portions being elongated to be folded in a direction perpendicular to the predetermined axis. This makes it possible to provide a high degree of freedom in deformation and to suppress a risk of breakage.

First claim

1 . A transducer, comprising:
an elastomer extending along a predetermined axis direction and having both end portions in which at least two electrodes having followability are disposed on both sides around a predetermined axis in the predetermined axis direction, the both end portions being elongated to be folded in a direction perpendicular to the predetermined axis.

2 . The transducer according to claim 1 , further comprising:
a central portion in a region different from the both end portions of the elastomer, wherein the central portion is elongated so as to approach the predetermined axis by energizing the electrodes.

3 . The transducer according to claim 1 , wherein
the both end portions located in the same direction with respect to the predetermined axis are elongated so as to be substantially parallel to the predetermined axis by energizing the electrodes.

4 . The transducer according to claim 3 , wherein
the elastomer has a donut shape viewed from the predetermined axis direction when the both end portions are elongated so as to be folded in the direction perpendicular to the predetermined axis.

5 . The transducer according to claim 1 , wherein
the elastomer has a cylindrical shape extending along the predetermined axis direction and has an opening in the predetermined axis direction, and the central portion is elongated so as to change a diameter size of the opening by energizing the electrodes.

6 . A method of producing a transducer, comprising:
a first step of depositing an electrode material in a direction perpendicular to a predetermined axis with respect to a cylindrical core material extending along the predetermined axis; a second step of depositing an elastomer on the electrode material in the direction perpendicular to the predetermined axis; and a third step of repeating the first step and the second step to deposit the electrode material and the elastomer.

7 . The method of producing the transducer according to claim 6 , wherein
in the third step, the electrode material and the elastomer are deposited at different positions in the predetermined axis direction.

8 . The method of producing the transducer according to claim 6 , further comprising:
a fourth step of removing the core material after the third step is completed.

Assignees

• Sony Group Corp

Inventors

• Kato Yusaku
• Nakata Akihiro
• Iwamuro Ryo
• Yamamoto Daisuke
• Mitsuhashi Hiroyuki
• Goto Yoshio

Classifications

• H10N30/508 Primary

  adapted for alleviating internal stress, e.g. cracking control layers · CPC title

• H10N30/057

  by stacking bulk piezoelectric or electrostrictive bodies and electrodes · CPC title

• H10N30/505

  the cross-section being annular · CPC title

• H10N30/857

  Macromolecular compositions · CPC title

• G03B9/02

  Diaphragms · CPC title