JPH0232641U

JPH0232641U -

Info

Publication number: JPH0232641U
Application number: JP11089788U
Authority: JP
Priority date: 1988-08-24
Filing date: 1988-08-24
Publication date: 1990-02-28

Description

[Brief explanation of drawings]

第１図ａは本考案の第１の実施例である電磁石
装置を示す断面図、第１図ｂは本考案の第２の実
施例である電磁石装置を示す断面図、第２図ａ，
ｂ，ｃは関係式の成立について示す概略断面図、
第３図ａ，ｂ，ｃは従来の電磁石装置を示す断面
図である。１…固定鉄心、２…継鉄、３…可動片、４…ば
ね、５…可動接点、６…下側接点板、７…下側固
定接点、８…上側接点板、９…上側固定接点、１
０…ボビン、１１…コイル、１２…ケース、１３
…底蓋、１４…ターミナル。 FIG. 1a is a cross-sectional view showing an electromagnet device according to the first embodiment of the present invention, FIG. 1b is a cross-sectional view showing an electromagnet device according to the second embodiment of the present invention, FIG.
b, c are schematic cross-sectional views showing the establishment of the relational expression;
FIGS. 3a, 3b, and 3c are sectional views showing a conventional electromagnetic device. 1... Fixed iron core, 2... Yoke, 3... Movable piece, 4... Spring, 5... Movable contact, 6... Lower contact plate, 7... Lower fixed contact, 8... Upper contact plate, 9... Upper fixed contact, 1
0...Bobbin, 11...Coil, 12...Case, 13
...Bottom lid, 14...Terminal.

Claims

[Claims for Utility Model Registration] A fixed core, a bobbin around which a coil is wound and fixed to the fixed core, a lower contact plate and an upper contact plate attached to the bobbin, and a bobbin connected to the fixed core. An electromagnetic device having a fixed iron core connected to the yoke and a lower fixed iron connected to the upper surface of the fixed iron core and the lower contact plate. The positioning was performed so that the dimensional relationship was calculated by a relational formula based on the measurement results of the step size with the top surface of the contact and the step size between the bottom surface of the movable piece and the bottom surface of the movable contact when the spring was in a free state. After that, they are joined by welding or gluing, and when the coil is energized, the movable piece is attracted to the fixed iron core, and the lower surface of the movable piece and the upper surface of the fixed iron core are connected at the moment when the movable contact contacts the lower fixed contact. An electromagnetic device characterized by an assembly structure that reduces variations in spacing.