JPS6149937U

JPS6149937U -

Info

Publication number: JPS6149937U
Application number: JP10769585U
Authority: JP
Priority date: 1985-07-15
Filing date: 1985-07-15
Publication date: 1986-04-03

Description

[Brief explanation of the drawing]

第１図は従来の熱応動スイツチの一例を示し、
第２図は第１図の−線矢印方向の部分平面図
を示す。第３図は本考案の実施例を示し、第４図
は第３図の−線矢印方向の部分平面図を示す
。２ａ……固定接点、３ａ……可動接点、３……
熱変形板、Ｐ……保護板。 Figure 1 shows an example of a conventional thermally responsive switch.
FIG. 2 shows a partial plan view in the direction of the - arrow in FIG. 1. FIG. 3 shows an embodiment of the present invention, and FIG. 4 shows a partial plan view in the direction of the - line arrow in FIG. 2a...Fixed contact, 3a...Movable contact, 3...
Heat deformable plate, P...protective plate.

Claims

[Scope of utility model registration request]

It has a fixed contact and a movable contact that are electrically insulated, and the movable contact is provided at the movable end of a thermally deformable plate such as a bimetal, and the thermally deformable plate suddenly jumps at a predetermined first temperature. A shallow dish-shaped portion is formed approximately in the center so that the movable contact is separated from the fixed contact by reversing the contact, and is quickly returned at a predetermined second temperature to bring the movable contact into contact with the fixed contact. One end of a protection plate made of a heat-resistant material is fixed to the part to which the movable contact is fixed, and the protection plate is inserted between the movable contact and the thermally deformable plate to prevent the fixed contact from moving between the fixed contact and the movable contact. In order to shield the thermally deformable plate from the high temperature caused by the electric discharge that occurs when the current is switched on and off between them, the thermally deformable plate is extended almost parallel to the thermally deformable plate in the direction of the fixed end of the thermally deformable plate in a cantilever shape from one fixed end of the thermally deformable plate. A heat-responsive switch characterized by: