Piezoelectric sounding body

A sounding body and piezoelectric technology, applied in the direction of piezoelectric/electrostrictive transducers, electrical components, sensors, etc., can solve problems such as complex operations, sound pressure or sound quality degradation

Pending Publication Date: 2022-03-01
TDK CORPARATION +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, in such a structure in which the terminal is fixed to the case and the periphery of the piezoelectric vibrating piece is bonded to the case using a silicone-based adhesive or the like, the vibration of the piezoelectric vibrating piece is excessively restricted, and the sound pressure may be lowered. or sound quality degradation
In addition, the work for bonding the surrounding of the piezoelectric vibrating piece is also complicated.

Method used

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Examples

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Embodiment Construction

[0098] Hereinafter, the present invention will be described based on the embodiments shown in the drawings. Also, in the attached drawings. The X-axis, Y-axis, and Z-axis are perpendicular to each other, and the side opposite to the direction of the Z-axis arrow is the mounting surface side.

[0099] Such as Figure 1A and Figure 1B As shown, a piezoelectric sounding body 10 according to an embodiment of the present invention has a piezoelectric vibrating piece 20 , a cover-like substrate 40 and a housing 50 . First, the piezoelectric vibrating reed 20 will be described.

[0100] (Piezoelectric vibrating piece)

[0101] Such as Figure 2A and Figure 2B As shown, the piezoelectric vibrating piece 20 has a flat vibrating piece 24 . A plate-shaped piezoelectric element 22 having a smaller outer diameter than the vibrating piece 24 is fixed to one surface of the vibrating piece 24 along the Z-axis. Such as Figure 5C As shown, a first electrode 22a and a second electrode...

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PUM

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Abstract

The invention provides a piezoelectric sounding body. A piezoelectric sounding body (10) is provided with: a piezoelectric vibrating piece (20); a case (50) in which the piezoelectric vibrating piece (20) is housed; a cover-like substrate (40) that is attached to the case (50) and forms, together with the case (50), a housing space for the piezoelectric vibrating piece (20); and conductive terminals (60, 70) electrically connected to the piezoelectric vibrating piece (20). The conductive terminals (60, 70) have tip portions (62, 72) that elastically press the piezoelectric vibrating piece (20) toward the housing side, and terminal bodies (68, 78) that are connected to the tip portions (62, 72). At least a part of the terminal bodies (68, 78) is embedded in a cap-shaped substrate (40) and fixed. According to the invention, the piezoelectric vibrating piece in the piezoelectric sounding body can be fully vibrated.

Description

technical field [0001] The present invention relates to a piezoelectric sound generating body that generates sound through vibration of a piezoelectric vibrating piece. Background technique [0002] The piezoelectric sound generator generates sound by vibrating the piezoelectric vibrating reed by applying an electric signal to the piezoelectric vibrating reed housed in the case. In Patent Document 1, a terminal for applying an electric signal to a piezoelectric vibrating reed is fixed to a case, and the periphery of the piezoelectric vibrating reed and the case are bonded and fixed using a silicone-based adhesive or the like. [0003] However, in such a structure in which the terminal is fixed to the case and the periphery of the piezoelectric vibrating piece is bonded to the case using a silicone-based adhesive or the like, the vibration of the piezoelectric vibrating piece is excessively restricted, and the sound pressure may be lowered. or problems with reduced sound qua...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04R17/00
CPCH04R17/00
Inventor 谷胁宏治佐藤晃木嶋薰高伟亮张奕琦黄晓鹏曾有义
Owner TDK CORPARATION
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