JPS6255848U

JPS6255848U -

Info

Publication number: JPS6255848U
Application number: JP14832885U
Authority: JP
Priority date: 1985-09-27
Filing date: 1985-09-27
Publication date: 1987-04-07
Also published as: JPH0427079Y2

Description

[Brief explanation of the drawing]

第１図ａは本考案の一実施例の一部分解斜視図
、第１図ｂは第１図ａにおける接点駆動部の詳細
を示す断面図、第２図は従来の圧電継電器の斜視
図、第３図は圧電継電器における温度補正の原理
を示す図である。４０…接点駆動部、２１…圧電駆動体、２２…
駆動子、２３…駆動基板、２３１…案内面、２４
…固定体、２５…変位拡大機構、２５１，２５２
，２５７，２５８…ヒンジばね、２５３，２５５
，２５６…腕体、２５４…駆動突起、４４…温度
補正部材、４４１…固定面、４４２…固着面、４
４４…逃げ溝、４４５…境界線。 FIG. 1a is a partially exploded perspective view of an embodiment of the present invention, FIG. 1b is a sectional view showing details of the contact drive section in FIG. 1a, FIG. FIG. 3 is a diagram showing the principle of temperature correction in a piezoelectric relay. 40... Contact drive unit, 21... Piezoelectric drive body, 22...
Driver element, 23... Drive board, 231... Guide surface, 24
...Fixed body, 25...Displacement magnification mechanism, 251, 252
, 257, 258...hinge spring, 253, 255
, 256... Arm body, 254... Drive protrusion, 44... Temperature correction member, 441... Fixed surface, 442... Adhering surface, 4
44...Escape groove, 445...Boundary line.

Claims

[Claims for Utility Model Registration] (1) A plurality of piezoelectric elements that generate mechanical strain due to an applied voltage are integrally stacked such that a plurality of internal electrodes are alternately located between them, and a drive element is attached to one end. a piezoelectric drive body having a free end and a fixed end; a drive board fixing the fixed end of the piezoelectric drive body; one end fixed to the drive board via a hinge spring; a displacement amplifying mechanism having an arm that is coupled to and contacts the driver, and a drive protrusion in which the driver presses the arm to expand the displacement of the driver based on this principle and moves by this displacement; a fixing surface on which a fixing end of the piezoelectric drive body is installed;
a temperature correction member having a fixed surface fixed to the drive board and an escape groove provided on the fixed surface; A piezoelectric relay, characterized in that one of its surfaces is fixed to the drive board. (2) The thermal expansion coefficients of the piezoelectric drive body, displacement magnification mechanism, and temperature correction member are α ₁ , α _{2 ,} and α ₃ , respectively, and the longitudinal length of the piezoelectric drive body is l.
_1. When the length from the fixed surface of the temperature correction member to the boundary line between the fixed surface and the relief groove is l ₃ and the length l ₂ = l ₁ + l ₃ , the thermal expansion coefficient α ₃ and the length l ₃ is l ₃ α ₃ = l ₂ The piezoelectric relay according to claim 1, which satisfies α ₂ −l ₁ α ₁ .