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Tubular piezoelectric vibrator

A piezoelectric vibrator, tubular technology, applied in the direction of generator/motor, piezoelectric effect/electrostrictive or magnetostrictive motor, electrical components, etc., can solve the problems of high working voltage and long response time, and achieve Effects of reduced amplitude loss, fast response time, and small size

Inactive Publication Date: 2013-05-15
TSINGHUA UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to propose a tubular piezoelectric vibrator to solve the problems of long response time or high working voltage of existing miniature vibrators

Method used

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Embodiment Construction

[0016] The principle, structure and specific implementation of the present invention will be further described below in conjunction with the accompanying drawings.

[0017] The tubular piezoelectric vibrator provided by the present invention includes a tubular vibrating body composed of an elastic matrix and a piezoelectric element. The vibrator also includes a bracket, which includes a bracket rod 2 and a fixing part 3; Polyhedral structure 1, the piezoelectric element 4 is pasted on the outer surface or inner surface of the elastic tubular polyhedron structure; one end of the support rod 2 is connected with the elastic tubular polyhedron structure or the piezoelectric element, and the other end of the support rod is connected with the fixed part 3 connections. Multiple support rods can be used, but the number of support rods should be less than or equal to the number of piezoelectric elements. One end of the support rod is connected to one or both ends of the tubular vibrat...

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Abstract

The invention discloses a tubular piezoelectric vibrator and belongs to the field of vibration technology and piezoelectric material application. The tubular piezoelectric vibrator comprises a tubular vibrating body and a support, wherein the tubular vibrating body is composed of an elastic matrix and piezoelectric elements, and the support comprises support rods and a fixed component. The elastic matrix is in an elastic-tube-shaped polyhedral structure, and the piezoelectric elements are pasted on the outer surface or the inner surface of the elastic-tube-shaped polyhedral structure. The outer surface and the inner surface of the elastic-tube-shaped polyhedral structure can be formed by a plurality of planes, or a part of planes and a part of curved surfaces, or curved surfaces. One ends of the support rods are connected with the elastic-tube-shaped polyhedral structure or the piezoelectric elements, and the other ends of the support rods are connected with the fixed component. According to the tubular piezoelectric vibrator, the support is installed at a proper position, and therefore standing wave vibration of the elastic-tube-shaped polyhedral structure can produce large amplitude, and amplitude loss of traveling wave motion can be reduced. The tubular piezoelectric vibrator is suitable for miniaturized products and has application prospect in the fields of cell phone vibrators, ultrasonic motors and the like.

Description

technical field [0001] The invention relates to a miniature vibrator, in particular to a tubular piezoelectric vibrator, which can be widely used in technical fields such as micromechanics and optical focusing, and belongs to the technical fields of vibration technology and piezoelectric material application. Background technique [0002] Most mobile phones use a vibrator as a reminder device. At present, the vibrator used in mobile phones is mainly driven by electromagnetic force, and the electromagnetic vibrator mainly uses an eccentric electromagnetic motor to generate vibration. It takes a while for the vibrator to stabilize when it is powered on, which is the response time of the vibrator to a trigger. The trigger response time of the electromagnetic vibrator is an important index to evaluate the performance of the vibrator. Many games are installed in modern mobile phones, and these game applications require the shortest possible response time of the vibrator to have...

Claims

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Application Information

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IPC IPC(8): H02N2/02H02N2/04
Inventor 陈宇陈柱子周铁英傅德永
Owner TSINGHUA UNIV
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