Piezoelectric ceramic loudspeaker

A technology of piezoelectric ceramics and piezoelectric ceramic sheets, which is applied in the field of loudspeakers, can solve problems such as the influence of piezoelectric ceramic speaker product quality, damage to piezoelectric ceramic sheets, and weak welding parts, etc., to achieve good sound conversion effects and improved product quality , Simple and compact structure

Inactive Publication Date: 2010-09-08
ZHANGJIAGANG YUTONG ELECTRONICS TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the process of installation and use, the piezoelectric ceramic sheet is directly in contact with the outside world, and it is

Method used

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  • Piezoelectric ceramic loudspeaker
  • Piezoelectric ceramic loudspeaker
  • Piezoelectric ceramic loudspeaker

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Embodiment Construction

[0011] The specific content of the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0012] Such as figure 1 , figure 2 , image 3 As shown, the piezoelectric ceramic speaker includes: a front cover 1, an upper sound-transmitting cavity 2 is opened on the front cover 1, and a vibrating diaphragm 3, a metal film 4, and a transparent cavity are sequentially arranged in the front cover 1. The sound cavity 2 cooperates with the piezoelectric ceramic sheet 5, the flexible circuit board 6, the rear cover 7 and the front cover 1 cooperate with each other to press the vibrating diaphragm 3, the metal film 4 and the flexible circuit board 6 between the two. Between them, one side of the flexible circuit board 6 is pressed on one side of the piezoelectric ceramic sheet 5 and connected with each other, and the above parts are connected by glue, and on the back cover 7 pressed on the side of the flexible circui...

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Abstract

The invention discloses a piezoelectric ceramic loudspeaker, which comprises a front cover plate. A vibrating diaphragm, a metal thin film, a piezoelectric ceramic plate and a flexible circuit board are sequentially arranged in the front cover plate; the piezoelectric ceramic plate is matched with a sound penetrating cavity; a rear cover plate is matched with the front cover plate to press the vibrating diaphragm, the metal thin film and the flexible circuit board between the two cover plates; one side of the flexible circuit board is pressed on one side of the piezoelectric ceramic plate and connected with the side of the piezoelectric ceramic plate; the rear cover plate on one side, where the flexible circuit board is pressed, is provided with an opening; and the flexible circuit board at the opening is provided with a wiring point. The piezoelectric ceramic loudspeaker has the advantages that: the structure is simple, compact and beautiful; the piezoelectric ceramic plate is not directly contacted with the exterior during the installation and use; the piezoelectric ceramic plate is protected well and difficult to collide; the service life of the piezoelectric ceramic plate and the service life of the piezoelectric ceramic loudspeaker are prolonged; and convenient and stable crimp connection between the piezoelectric ceramic plate and the metal thin film and good sound conversion effect are ensured; therefore, the product quality of the piezoelectric ceramic loudspeaker is improved greatly.

Description

technical field [0001] The invention relates to a loudspeaker, in particular to a piezoelectric ceramic loudspeaker. Background technique [0002] The piezoelectric ceramic speaker is an electroacoustic transducer device that realizes electrical-mechanical-acoustic conversion through the inverse piezoelectric effect of piezoelectric ceramic sheets, and is widely used in portable device terminals. When the piezoelectric speaker has an audio signal input, the vibration component of the piezoelectric speaker will produce a corresponding expansion or contraction movement, thereby pushing the air and radiating sound. Existing piezoelectric ceramic loudspeakers mainly include piezoelectric ceramic sheets, vibrating diaphragms and metal thin films, and adopt a suspension-edge structure. In the process of installation and use, the piezoelectric ceramic sheet is directly in contact with the outside world, and it is prone to bumps, resulting in damage to the piezoelectric ceramic she...

Claims

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Application Information

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IPC IPC(8): H04R17/00
Inventor 贾开成邵育萍龙平江
Owner ZHANGJIAGANG YUTONG ELECTRONICS TECH
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