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Piezoelectric vibrator

A piezoelectric vibrator and piezoelectric material technology, applied in circuits, electrical components, piezoelectric/electrostrictive/magnetostrictive devices, etc., can solve the problems of narrow response range, inability to effectively complete energy conversion, etc., to improve energy Conversion efficiency, effect of widening frequency response range

Active Publication Date: 2015-09-09
UNIV OF SCI & TECH OF CHINA
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of this, this application provides a piezoelectric vibrator, which is used to solve the problem that the existing piezoelectric vibrator has a narrow frequency response range and cannot effectively complete energy conversion when the frequency of the vibration source changes

Method used

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Embodiment Construction

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the application with reference to the drawings in the embodiments of the application. Apparently, the described embodiments are only some of the embodiments of the application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0026] see Figure 1-Figure 3 It can be seen that the piezoelectric vibrator disclosed in the embodiment of the present application includes:

[0027] Folding the layered elastic body 1, the folded layered elastic body 1 includes at least three elastic beam units 11 parallel to each other, every two adjacent elastic beam units 11 are connected by a rigid connector 12, the folded The elastic beam units 11 at both ends of the layered elastic body 1 are connected with a rigid mass 2 t...

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Abstract

A piezoelectric vibrator comprises a folded layered elastomer. The elastomer comprises at least three elastic beam units which are parallel with one another. Two adjacent elastic beam units are connected through a rigid connector. The elastic beam units at two ends of the elastomer are respectively connected with a rigid mass through a rigid connector. The surface of a random elastic beam unit or each of a plurality of elastic beam units is provided with a piezoelectric material layer. Furthermore electrode leads are arranged on the piezoelectric material layer for leading out electric current. When the piezoelectric vibrator is applied, the rigid mass at a random end is fixed with a vibration source. Vibration of the vibration source is transmitted to the elastic beam unit through the mass, thereby making the elastic beam units generate first-order bending deformation vibration, second-order bending deformation vibration and first-order torsional deformation vibration. A certain proportional relation exists among the vibration frequencies of the three vibration modes, thereby generating a plurality of resonance modes in a relatively wide frequency range next to a first-order resonance frequency and expanding the frequency response range of the piezoelectric vibrator.

Description

technical field [0001] The present application relates to the technical field of piezoelectric applications, and more specifically, relates to a piezoelectric vibrator. Background technique [0002] The main function of the piezoelectric vibrator is to convert the collected vibration energy in the industrial production and living environment into electrical energy, and then supply power to other micro-power electronic components. [0003] To collect vibration energy in the environment, a vibration energy converter is often required, that is, the resonance frequency of the piezoelectric vibrator is close to or equal to the vibration frequency of the environment, thereby improving the energy conversion efficiency. The inventors of this case have studied the existing piezoelectric vibrator and found that the existing piezoelectric vibrator only has a first-order vibration mode, that is, its operating frequency is near the first-order resonance frequency, and its response range ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L41/113H10N30/30
Inventor 龚立娇冯志华潘巧生
Owner UNIV OF SCI & TECH OF CHINA
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