Piezoelectric element for frequency self-regulation circuit, oscillating mechanical system and device including same, and method for manufacturing piezoelectric element

一种自动控制电路、压电元件的技术，应用在制造压电元件,机械振荡系统领域，能够解决无法利用元件压电效应等问题

Active Publication Date: 2019-03-22
THE SWATCH GRP RES & DEVELONMENT LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, a disadvantage of the proposed piezoelectric element is that it is not possible to exploit the piezoelectric effect of the element in a precise and optimal way without significantly complicating the design of the system

Method used

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  • Piezoelectric element for frequency self-regulation circuit, oscillating mechanical system and device including same, and method for manufacturing piezoelectric element
  • Piezoelectric element for frequency self-regulation circuit, oscillating mechanical system and device including same, and method for manufacturing piezoelectric element
  • Piezoelectric element for frequency self-regulation circuit, oscillating mechanical system and device including same, and method for manufacturing piezoelectric element

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Embodiment Construction

[0027] In the following description, reference is made to piezoelectric elements for automatic frequency control circuits, in particular for automatic control of the oscillation frequency of mechanical oscillating systems. The electronic components of the automatic frequency control circuit, which are known to all those skilled in the art, will only be described in a simplified manner. As described below, the automatic control circuit is mainly used to control the oscillation frequency of the balance on which the hairspring of the piezoelectric element is mounted. However, other mechanical oscillation systems are also conceivable, but in the following description only the mechanical oscillation system of the balance wheel on which the balance spring in the form of a piezoelectric element is mounted will be mentioned.

[0028] figure 1 Shown is a device 1 comprising a mechanical oscillating system 2, 3 and a circuit 10 for automatically controlling the oscillating frequency f...

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Abstract

The invention relates to a piezoelectric element (3) for an automatic frequency control circuit. The element includes a balance spring (7) formed of a strip of piezoelectric material, a first electrode connected to the automatic control circuit, and disposed on all or part of one side of the strip, and a second electrode connected to the automatic control circuit and disposed on all or part of another side of the strip of piezoelectric material. The element further comprises at least two discontinuous layers of an insulating material, each discontinuous layer of insulating material being disposed on at least one side of the strip of piezoelectric material and separating a first electrode from a second electrode. The discontinuous layers of insulating material are distributed on predetermined portions of the balance spring substantially forming arcs, with a predetermined angular periodicity. The invention further relates to an oscillating mechanical system and device including the piezoelectric element, and a method for manufacturing the piezoelectric element.

Description

technical field [0001] The invention relates to a piezoelectric element used in an automatic frequency control circuit. [0002] The invention also relates to a mechanical oscillation system comprising a piezoelectric element and a balance wheel. [0003] The invention also relates to a device comprising a mechanical oscillating system and a circuit for automatically controlling the oscillating frequency of the mechanical oscillating system. [0004] The invention also relates to a method for producing a piezoelectric element. Background technique [0005] Piezoelectric elements are commonly used in the field of electromechanical systems, e.g. for the manufacture of oscillators used as time bases, or in applications for mass, force, gyroscope sensors and many other sensors [0006] In the field of timepieces, in particular mechanical or electromechanical watches, it is known to provide mechanical oscillation systems with piezoelectric elements. This mechanical oscillating...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03H3/04H03H9/02H03H9/19
CPCH03H3/04H03H9/02023H03H9/19H03H2003/0414G04C3/047G04B17/063G04B17/066H10N30/02H10N30/06H10N30/082H10N30/85H10N30/085H10N30/802H10N30/875H10N30/883
Inventor A·埃梅利F·盖斯萨斯L·通贝兹B·施奈德S·达拉皮亚扎
Owner THE SWATCH GRP RES & DEVELONMENT LTD
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