JPS5929318Y2 - Polar relay - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a polarized relay, and its purpose is to ensure the opening and closing of contacts.

An embodiment of the present invention will be described below with reference to the drawings. Reference numeral 1 denotes a bottomed case with an opening at the top, 2a, 2b, and 3a.

3b is a fixed contact terminal that is fixed through both ends of both side walls of the case 10; 4a, 4b, 5a, and 5b are coil terminals that are fixed through the middle of both side walls of the case 10; 6 is a U-shaped iron core;
, 8 are coils to be wound around a coil frame 9 attached to the center of the U-shaped iron core 6, and coil connection pieces 10a and 1 are attached to the flanges 9a and 9b at both ends of the coil frame 9 at both ends thereof.
0b, lla.

11b.

A U-shaped iron core 6 is housed in the case 1, and each coil connection piece is connected to each of the coil terminals.

A permanent magnet 12 has magnetic poles of the same polarity at both ends and a magnetic pole of a different polarity at the center, and is arranged between both legs of the U-shaped iron core 60 so that the magnetic poles at both ends come into contact with the legs on both sides of the U-shaped iron core 60. will be established.

13 is a dogleg-shaped movable iron piece, the center of its outer surface is placed on the center of the upper surface of the permanent magnet 12, and the lower surfaces of both ends of the movable iron piece 130 are opposed to the end surfaces of both legs of the U-shaped iron core 60.

14 is a leaf spring whose lower surface is fixed to the center of the upper surface of the movable iron piece 13; 15.16 is a contact leaf spring whose central portion is pivoted to both ends of the leaf spring 140; movable contacts 17a are fixed to the lower surface of both ends; 17bs 18a*iab are fixed contacts 19a and 19b fixed to each of the fixed contact terminals.

20 a y 20 b are opposed to each other so as to approach and separate from each other.

Reference numeral 21 denotes a lid for closing the opening of the case 1, and a protrusion 22 protruding from the inner surface of the lid is designed to come into contact with the center of the upper surface of the movable iron piece 13.

The present invention has the above-described configuration, and when a current is passed through the coil r to magnetize the end surfaces of both legs of the U-shaped iron core 60 to different polarities, the bottom surface of one end of the movable iron piece 13 is attracted to the end surface of one side leg of the iron core 6. The movable iron piece 13 is attracted and rotates around its center, and the movable contacts 17a, 17b and the fixed contacts 19a,
19b is closed to connect the movable contacts 18a, 18b and the fixed contact 2.
0a.

20b is opened.

Next, when the current in the coil l is cut off and the current is applied to the coil 8 to magnetize the end surfaces of both legs of the iron core 60 to different magnetic poles, the movable iron piece 13 rotates in the opposite direction around its center.
Movable contacts 17a, 17b and fixed contacts 19a p 19b
When opened, the movable contacts 18a, 18b and the fixed contact 20a are opened.

20b is for closing.

Since the center part of the movable contact plate spring, which fixes the movable contacts to the bottom surface of both ends, is pivotally supported by both ends of the plate spring, the movable contact, which fixes the movable contacts to the bottom surface of both ends of the movable contact plate spring, reliably contacts the fixed contact. This has the effect of preventing a situation in which one of the movable contacts on the lower surface of both ends of the movable contact leaf spring contacts the fixed contact and the other does not contact the fixed contact.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, and FIG. 1 is a sectional view;
FIG. 2 is a plan view with the lid removed, and FIG. 3 is an exploded perspective view. 1 is the case, 2a, 2b, 3a, 3b are fixed contact terminals,
4a, 4b, 5a, 5b are coil terminals, 6 is a U-shaped iron core, l, 8 are coils, 9 is a coil frame, 12 is a permanent magnet,
13 is a movable iron piece, 14 is a leaf spring, 15.16 is a contact leaf spring, lya, Hb. 18a, 18b are movable contacts, 19a, 19b. 20at20b is a fixed contact, and 21 is a lid body.

Claims (1)

[Claim for Utility Model Registration] A coil is wound around a coil frame 9 attached to the center of a U-shaped iron core 6, and the iron core 6 is housed and arranged in a case 1, with magnetic poles of the same polarity at both ends. A permanent magnet 12 having different magnetic poles in the central part is disposed between the legs of the iron core 60 with its magnetic poles at both ends in contact with the legs on both sides of the iron core 60, and the center part of the outer surface of the dogleg-shaped movable iron piece 13 is permanently attached. A leaf spring 14 is placed on the center of the upper surface of the magnet 12, with the lower surfaces of both ends of the movable iron piece 130 facing the end surfaces of both legs of the iron core 6, and whose center portion is fixed to the center of the upper surface of the movable iron piece 13.
A movable contact 1 having central portions of contact leaf springs 15 and 16 pivoted at both ends thereof and fixed to the lower surfaces of both ends of the contact leaf springs 15 and 16.
Fixed contacts 19a, 19b have ra, 1 rb, 18a, 18b fixed to each fixed contact terminal. A polarized relay that faces 20a and 20b so as to come into contact with and separate from them.