JPS63184540U

JPS63184540U -

Info

Publication number: JPS63184540U
Application number: JP7584787U
Authority: JP
Priority date: 1987-05-19
Filing date: 1987-05-19
Publication date: 1988-11-28

Description

[Brief explanation of the drawing]

第１図ａは本考案の圧電継電器の一実施例を示
す斜視図、第１図ｂは同図ａにおける主要部の部
分破断平面図、第２図ａ〜ｃは第１図ａにおける
接点組立部近傍の平面図、第３図は第１図に示す
駆動突起の位置での変位拡大機構および接点ばね
負荷の力―変位特性図、第４図は本考案の第２の
実施例を示す斜視図、第５図は従来の圧電継器の
一例を示す斜視図、第６図は従来の圧電継電器の
力―変位特性図である。１０……函体、１１……外枠、１２……取付部
、２０……接点駆動部、２１……圧電駆動体、２
２……駆動子、２３……駆動基板、２４……固定
体、２５……変位拡大機構、２５１，２５２……
ヒンジばね、２５３，２５３ａ，２５３ｂ……第
１、第２、最終段の腕体、２５４……駆動突起、
３０……接点組立部、３１……可動接点ばね、３
１１……可動接点、３２……固定接点保持体、４
０，４１……制止部材、５０……延長部材。 Fig. 1a is a perspective view showing an embodiment of the piezoelectric relay of the present invention, Fig. 1b is a partially cutaway plan view of the main part in Fig. 1a, and Figs. 2a to c are the contact assembly in Fig. 1a. 3 is a force-displacement characteristic diagram of the displacement magnification mechanism and contact spring load at the position of the drive protrusion shown in FIG. 1, and FIG. 4 is a perspective view showing the second embodiment of the present invention. 5 is a perspective view showing an example of a conventional piezoelectric relay, and FIG. 6 is a force-displacement characteristic diagram of the conventional piezoelectric relay. DESCRIPTION OF SYMBOLS 10...Box, 11...Outer frame, 12...Mounting part, 20...Contact drive part, 21...Piezoelectric drive body, 2
2...Driver, 23...Drive board, 24...Fixed body, 25...Displacement magnification mechanism, 251, 252...
Hinge springs, 253, 253a, 253b...first, second, and final stage arm bodies, 254...driving projections,
30...Contact assembly part, 31...Movable contact spring, 3
11...Movable contact, 32...Fixed contact holder, 4
0, 41...stopping member, 50...extension member.

Claims

[Claims for Utility Model Registration] (1) A plurality of piezoelectric elements are integrally stacked such that internal electrodes are alternately located between them, and mechanical strain caused by expansion and contraction of these piezoelectric elements in the stacking direction due to an electric field is caused. A piezoelectric drive body having a drive element at one end and a fixing part at the other end, a drive board fixing the fixing part of the piezoelectric drive body, and one end fixed to the drive board via a hinge spring. The drive element is pressed against the middle part of the arm connected to the hinge spring, and the other end has a drive protrusion that moves by magnifying the displacement of the piezoelectric drive body via the drive element based on the "lever" principle. a contact drive unit including a displacement magnification mechanism; a movable contact spring that moves the movable contact by displacement of the drive protrusion to open and close an electric circuit with the fixed contact; and the fixed contact that is arranged in a stage opposite to the movable contact. a contact assembly section that includes a fixed contact holder having contacts and is juxtaposed to the contact drive section; a drive input terminal for the piezoelectric drive body and a pull-out terminal that fixedly holds the contact assembly section and draws out the electric circuit; In the piezoelectric relay, the piezoelectric relay has a box having an outer frame for inserting the contact drive unit, and a mounting portion for fixing and holding the contact drive unit, an extension member fixed to the final stage arm of the displacement amplification mechanism, and a first arm. A piezoelectric relay characterized in that a notch portion of a restraining member fixed to a body is arranged at a predetermined interval. (2) The piezoelectric relay according to claim 1, wherein the extension member is integrally formed with the final stage arm.