JPH037245U

JPH037245U -

Info

Publication number: JPH037245U
Application number: JP6773089U
Authority: JP
Priority date: 1989-06-09
Filing date: 1989-06-09
Publication date: 1991-01-24

Description

[Brief explanation of drawings]

第１図は本考案にかかる請求項１の電磁継電器
の側面図を示し、第２図ないし第５図は本考案に
かかる請求項２の電磁継電器の一実施例を示し、
第２図は断面図、第３図は概略説明図、第４図お
よび第５図はコイルの変形にともなうばね力の変
化を説明するための説明図、第６図は従来例にか
かる電磁継電器を示す側面図である。２……ヨーク、３……コイル、５……鉄芯、５
ａ…磁極部、６……電磁石装置、７……係止部材
（固定部材）、７ａ……係止部、８……復帰ばね
、１０……可動接触片、１０ａ……可動接点、１
１……可動鉄片、１２ａ，１３ａ……固定接点。 FIG. 1 shows a side view of an electromagnetic relay according to claim 1 according to the present invention, and FIGS. 2 to 5 show an embodiment of the electromagnetic relay according to claim 2 according to the present invention,
Figure 2 is a sectional view, Figure 3 is a schematic explanatory diagram, Figures 4 and 5 are explanatory diagrams for explaining changes in spring force due to coil deformation, and Figure 6 is a conventional electromagnetic relay. FIG. 2...Yoke, 3...Coil, 5...Iron core, 5
a... Magnetic pole part, 6... Electromagnet device, 7... Locking member (fixed member), 7a... Locking part, 8... Return spring, 10... Movable contact piece, 10a... Movable contact, 1
1... Movable iron piece, 12a, 13a... Fixed contact.

Claims

[Scope of Claim for Utility Model Registration] (1) Based on the excitation and demagnetization of an electromagnetic device formed by fixing one protruding end of an iron core wound with a coil as a magnetic pole part and fixing the other protruding end to a yoke, a movable iron piece that is hinge-supported by the magnetic pole portion of the iron core so that its intermediate portion can rotate around the end of the yoke as a fulcrum, and whose one end portion is locked to a locking portion of a fixed member via a return spring; In an electromagnetic relay that drives a movable contact piece to open and close a contact by attracting and separating the other end, the fixing member is formed of a reversible shape memory alloy,
An electromagnetic relay characterized in that when the temperature reaches a predetermined temperature or higher, the locking portion of the fixed member changes to reduce the spring force of the return spring applied to the movable iron piece. (2) Based on the excitation and demagnetization of an electromagnetic device formed by fixing one protruding end of an iron core around which a coil is wound as a magnetic pole and the other protruding end to a yoke, the magnetic pole of the iron core is The other end of the movable iron piece is hinge-supported so that its intermediate part can rotate around the end of the yoke as a fulcrum, and the other end of the movable iron piece is locked to the locking part of the fixed member via a return spring. In an electromagnetic relay that opens and closes a contact by driving a movable contact piece, the return spring is formed of a reversible shape memory alloy,
An electromagnetic relay characterized in that, when the temperature exceeds a predetermined temperature, the return spring changes to reduce its own spring force applied to the movable iron piece.