Piezoelectric sound component having a case with stepped portion
AssigneeMurata Manufacturing Co., Ltd.
InventorsShungo Kanai, Tadashi Okuzawa, Toshiyuki Sakai, Yuta Okada
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Abstract
A piezoelectric sound component is provided that includes a piezoelectric diaphragm and a case. The piezoelectric diaphragm is accommodated in the case. Moreover, a diaphragm 10 has a peripheral portion that includes a first peripheral portion and a second peripheral portion. The first peripheral portion is fixed to the case and the second peripheral portion is movable relative to the case. The case includes a step that is in positional agreement with the second peripheral portion in the thickness direction of the diaphragm. The step and the second peripheral portion define a clearance therebetween.
Claims20
A piezoelectric sound component, comprising:
- a case having an internal space;
- and
- a piezoelectric diaphragm disposed in the internal space of the case and including a diaphragm and a piezoelectric member, the diaphragm having a middle portion and a peripheral portion that surrounds the middle portion with the piezoelectric member disposed on the middle portion,
- wherein the peripheral portion of the diaphragm includes a first peripheral portion fixed to the case and a second peripheral portion movable relative to the case,
- wherein the case includes a step that is in positional agreement with the second peripheral portion in a thickness direction of the diaphragm, and
- wherein the step and the second peripheral portion define a clearance therebetween.
A piezoelectric sound component, comprising:
- a case having an internal space;
- and
- a piezoelectric diaphragm disposed in the internal space of the case and including a diaphragm and a piezoelectric member disposed on a main surface of the diaphragm,
- wherein the diaphragm comprises a rectangular shape in a plan view of the main surface and includes a peripheral portion that extends along sides of the rectangular shape of the diaphragm,
- wherein corners of the peripheral portion of the diaphragm are fixed to the case and sides of the peripheral portion between the corners are movable relative to the case,
- wherein the case includes a step that overlaps at least a portion of the sides of the peripheral portion in a thickness direction of the diaphragm, and
- wherein a space is provided between the step and the peripheral portion.
Dependencies are inferred from the claim text.