Ultrasonic transducer for a measuring device
AssigneeHonda Electronics Co., Ltd.
InventorKenji Nagareda
Life of this patent
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Abstract
An ultrasonic transducer for a measuring instrument includes a housing container with a support plate and a piezoelectric element that is supported by the support plate and has a substantially circular shape. The piezoelectric element includes multiple substantially sector-shaped oscillation parts that are divided by multiple grooves that communicate with each other at the central part and extend radially. The piezoelectric element oscillates in the thickness direction A3 in the first frequency band and in the radial direction A4 in the second frequency band, which is lower than the first frequency band. The ultrasonic transducer is capable of expanding the frequency band suitable for transmitting and receiving ultrasound.
Claims9
An ultrasonic transducer for a measuring device that transmits and receives ultrasonic waves, comprising:
- a housing container with a support body;
- and
- a piezoelectric element with a substantially circular outer shape supported by the support body,
- wherein the piezoelectric element includes;
- multiple substantially sector-shaped oscillation parts that are divided by multiple grooves that communicate with each other at a central part and extend radially, and
- soundproof sheets with double-sided tape arranged to fill multiple grooves in order to join and fix the multiple adjacent oscillation parts to each other so as to oscillate in a thickness direction in a first frequency band, as well as to oscillate in a radial direction in a second frequency band, which is lower than the first frequency band.
An ultrasonic transducer for a measuring device that transmits and receives ultrasonic waves, comprising:
- a housing container with a support body;
- and
- a piezoelectric element with a substantially circular outer shape supported by the support body, wherein
- the support body includes a surface shape corresponding to the pyramidal surface of a polygonal pyramid or polygonal truncated pyramid and is a support plate that is generally convex or concave on an outside of the support plate;
- and
- the piezoelectric element includes;
- multiple substantially sector-shaped oscillation parts that are divided by multiple grooves that communicate with each other at a central part and extend radially;
- and
- soundproof sheets with double-sided tape arranged to fill multiple grooves in order to join and fix the multiple adjacent oscillation parts to each other, so as to oscillate in a thickness direction in a first frequency band, as well as to oscillate in a radial direction in a second frequency band, which is lower than the first frequency band.
Dependencies are inferred from the claim text.