Piezoelectric pump with an upper and lower vibrating body
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United States of America Patent
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-
Oct 24, 2023
Grant Date -
Oct 8, 2020
app pub date -
Jun 22, 2020
filing date -
Dec 22, 2017
priority date (Note) -
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status (Latency Note)
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Abstract
A pump includes a housing, a first vibrating body, a second vibrating body, and a peripheral wall portion that define a pump chamber, and a driving body. The housing has a first wall portion opposed to the first vibrating body and a second wall portion. The first wall portion includes a first concave portion that opens toward the first vibrating body and opposed to a central portion of the first vibrating body and a first circumferential portion adjacent to the first concave portion. A first chamber includes a first wide portion defined by the first concave portion and the first vibrating body, and a first narrow portion defined by the first circumferential portion and the first vibrating body. The first narrow portion overlaps with at least part of the first vibrating body.
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