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Piezoelectric vibrating diaphragm and piezoelectric loudspeaker

A piezoelectric and piezoelectric ceramic technology, applied in the field of loudspeakers, can solve the problems of poor high-frequency performance of piezoelectric loudspeakers, and achieve the effect of smooth frequency response curve and good high-frequency performance

Inactive Publication Date: 2020-10-13
MERRY ELECTRONICS SUZHOU
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, the high-frequency performance of the piezoelectric speaker in the prior art is poor

Method used

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  • Piezoelectric vibrating diaphragm and piezoelectric loudspeaker
  • Piezoelectric vibrating diaphragm and piezoelectric loudspeaker
  • Piezoelectric vibrating diaphragm and piezoelectric loudspeaker

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Embodiment Construction

[0037] In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved clearer, the technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and through specific implementation methods. It should be understood that the specific embodiments described here are only used to explain the present invention, but not to limit the present invention. In addition, it should be noted that, for the convenience of description, only the parts related to the present invention are shown in the drawings but not all of them.

[0038] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the conve...

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Abstract

The invention discloses a piezoelectric vibrating diaphragm and a piezoelectric loudspeaker, and belongs to the technical field of loudspeakers. The vibrating diaphragm comprises a substrate, piezoelectric ceramic, and a composite base material, wherein the base plate is fixed on the base plate through fixing glue; the plurality of piezoelectric ceramics comprise central piezoelectric ceramics anda plurality of annular piezoelectric ceramics; the plurality of annular piezoelectric ceramics are annular and are arranged around the central piezoelectric ceramic; the multiple annular piezoelectric ceramics are arranged in the direction from the center of the substrate to the edge, the deformation direction of the annular piezoelectric ceramics adjacent to the center piezoelectric ceramic is opposite to the deformation direction of the center piezoelectric ceramic, and the deformation directions of every two adjacent annular piezoelectric ceramics are opposite. The composite base materialis adhered to the central piezoelectric ceramic and the plurality of annular piezoelectric ceramics through a conductive adhesive. The piezoelectric vibrating diaphragm and the piezoelectric loudspeaker provided by the invention can have better high-frequency performance, reflect on a frequency response curve, can be smoother on a high-frequency-band frequency response curve, and have no more obvious wave crests and wave troughs.

Description

technical field [0001] The invention relates to the technical field of loudspeakers, in particular to a piezoelectric diaphragm and a piezoelectric loudspeaker. Background technique [0002] Piezoelectric speakers are based on the inverse piezoelectric effect of piezoelectric materials to produce sound, which has the advantages of ultra-light, ultra-thin, small sound cavity, etc., and is widely used in the field of speakers. [0003] In the prior art, a piezoelectric diaphragm in a piezoelectric speaker usually includes a whole piece of piezoelectric ceramics, glue and a substrate that are laminated. When a positive voltage is applied to the piezoelectric diaphragm, the whole piece of piezoelectric ceramic stretches, and the piezoelectric diaphragm bends upward; when a negative voltage is applied to the piezoelectric diaphragm, the whole piece of piezoelectric ceramic contracts, and the piezoelectric diaphragm The membrane bends downward; when an alternating current is appl...

Claims

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Application Information

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IPC IPC(8): H04R17/00H04R7/06
CPCH04R7/06H04R17/00H04R2307/023
Inventor 魏鹏江袁世明张瑞成翁秸宸
Owner MERRY ELECTRONICS SUZHOU
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