Ultrasonic generator
AssigneeMurata Manufacturing Co., Ltd.
InventorsHironari Yamamoto, Akihiro Mitani
Life of this patent
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Abstract
An ultrasonic generator that is capable of increasing output sound pressure is provided. An ultrasonic generating element is accommodated in an accommodation space that is formed by a first case member and a second case member. The ultrasonic generating element is secured to the first case member via a plurality of first supporting members. The first supporting members are provided so that, in a first acoustic path that includes a space formed between a bottom surface of the ultrasonic generating element and a top surface of the first case member and that extends to sound-wave emission holes, a transverse section of the acoustic path has a portion that becomes smaller than another portion thereof.
Claims20
An ultrasonic generator comprising:
- a first case member;
- a second case member coupled to the first case member to define an accommodation space therebetween, the second case member including at least one sound-wave emission hole;
- an ultrasonic generating element that generates a sound wave and is disposed in the accommodation space, the ultrasonic generating element including a sound pressure generation center point;
- and
- a first supporting member disposed between the first case member and the ultrasonic generating element to define a first space between opposing surfaces of the ultrasonic generating element and the first case member,
- wherein the sound wave generated by the ultrasonic generating element propagates in a first acoustic path from the sound pressure generation center point to the at least one sound-wave emission hole via the first space, and
- wherein the first supporting member comprises a shape such that a portion of the first acoustic path narrows as it extends from the sound pressure generation center point and between the opposing surfaces of the ultrasonic generating element and the first case member.
Dependencies are inferred from the claim text.