JPS59221934A - Polarized relay - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

TECHNICAL FIELD The present invention relates to a so-called lift-off type relay of a polarized type, in which a current flowing through a coil inverts a card together with an armature to open and close contacts.

BACKGROUND ART In such a polarized relay, it is necessary to improve the breaking speed when the movable contact and the fixed contact open and separate, thereby preventing the two contacts from welding. Although it is easy to imagine increasing the spring force of the movable contact to improve the conduction and breaking speed between the movable contact and the fixed contact, doing so requires increasing the electromagnetic force that resists the spring force. This will make it larger.

Purpose An object of the present invention is to provide a framed relay that improves the conduction and breaking speed between a movable contact and a fixed contact, and that does not require large electromagnetic force and can be miniaturized. be.

Embodiment FIG. 1 is a perspective view of a polarized relay according to an embodiment of the present invention, and FIG. 2 is an exploded perspective view thereof. Coil block 1
includes a yoke 3 and a coil frame 5. Both ends of the yoke 3 are magnetic pole pieces 2, and the yoke 3 is formed into a U-shape. The coil frame 5 supports the yoke 3, and a coil 4a is wound around the body of the coil frame 5. On one surface of the magnetic pole piece 2,
Residual plates 6 for adjusting the magnetic absorption force are respectively provided.

A plurality of fixed terminals 11 are supported on the base plate 7 of the contact block C17 17. The lead wire of the coil 4a is connected to the terminal 11. The contact spring 15 has a movable contact 16 facing the fixed contact 12, and a base 15a is bent into a protruding shape toward the yoke 3.

This base portion 15a is connected to the terminal 1 disposed between the fixed terminals 11.
Fixed to 3. The contact springs 15 are arranged in pairs on both sides of the yoke 3. The contact spring 15 has a bifurcated shape to improve contact reliability, and the movable contact 16 has a two-headed shape.

The separator 18 covers the coil 4a of the coil block 1, and extends the magnetic pole piece 2 from both ends in the longitudinal direction upwardly in FIG.
let A support shaft 20 is provided protruding from the longitudinal center of the separator 18 .

The armature block 21 basically includes a pair of armatures 22 facing the magnetic pole piece 2, a permanent magnet 26 interposed between the armatures 22, and a synthetic resin card 25. The pair of armatures 22 are arranged parallel to each other.

The armature 22 is integrated with an armature holder 24 having a shaft hole 23 through which the support shaft 20 is inserted. At both ends of the armature holder 24, cards 25 are provided which protrude outward in a direction perpendicular to the longitudinal direction of the armature 22.
i is formed.

FIG. 3 is an exploded perspective view of the vicinity of the card 25.

The fixed contact 10 is attached to a support shaft 9 (a second
(see figure) for angular displacement. A spring 8 is interposed between the fixed contact member 10 and the armature block 21 at a distance of 1σ from the shaft hole 23 with respect to the support shaft 9. An E-shaped connecting member 30 is fitted between the fixed contact member 10 and the movable contact 15. The intervening piece 31 of this connecting member 30 connects the fixed member 10 and the contact spring 1.
5, and the leg portions 32 and 33 at both ends thereof.
is located outside of the fixed contact member 10 and the contact spring 15.

When the coil 4a is excited, the armature block 21
Angular displacement in the clockwise direction as shown in Figure (1). As a result, the 25 card contact springs 15 located at the upper left in FIG. 4(1) are pressed upward in FIG. 4(1). Therefore, the connecting member 30 resists the spring force of the spring 8 and the fixed contact member 1
0 is angularly displaced counterclockwise around the support shaft 9. As a result, the fixed contact 12 and the movable contact 16 are quickly separated, and the breaking speed is improved.

Card 25 provided at the lower left in Fig. 4 (],)
is illuminated by the contact spring 15. Therefore, the fixed contact member 10 is angularly displaced counterclockwise around the support shaft 9 by the spring force of the spring 8 . This improves the speed of conduction between the fixed contact 12 and the movable contact 16. Similar operations occur with respect to the remaining diagonally located fixed contacts 12 and movable contacts 16. Even after the coil 4a is demagnetized, the switch jig mode shown in FIG. 4(1) is maintained.

When a current is applied in the opposite direction to the coil 4a, the armature block is angularly displaced in the counterclockwise direction as shown in FIG. 4(2). As a result, the armature 25 shown in the upper left part of FIG. 4(2) separates from the contact spring 15, and the spring force of the spring 8 causes the breaking speeds of the fixed contact 12 and the movable contact 16 to be adjusted. Further, the card 25 shown at the lower left of FIG. 4(2) presses the contact spring 15. As a result, the fixed contact member 10 is angularly displaced clockwise around the support shaft 9 against the spring force of the spring 8 . Therefore, fixed contact 1
2 and the movable contact 16 are improved.

Effects As described above, according to the present invention, the fixed contact 12 is connected to the contact spring 15, and the angular displacement direction of the fixed contact is set in a direction that improves conduction and disconnection speed with the movable contact. Electrical conduction and interruption between the fixed contact and the movable contact are performed at high speed, and arcing of the contact by 10 mm is suppressed, resulting in a long life.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of an embodiment of the present invention, Fig. 2 is an exploded perspective view of the embodiment shown in Fig. 1, and Fig. 3 is a perspective view of an embodiment of the present invention.
(Fig. 4 is an exploded perspective view of the armature block 21 for explaining the operation of the embodiment shown in Figs. 1 to 3.
FIG. 1... Coil block, 2 Inner magnetic pole piece, 3... Yoke, 4a... Coil, 7... Base plate, 8...
・Spring, 9... Support shaft, 10... Fixed contact member, 12
...Fixed contact, 15...Fixed contact spring, 16...
Movable contact, 17... Contact block, 22... Armature, 23... Shaft hole, 25... Card, 26... Permanent magnet, 30... Connecting member Fig. 1 Fig. 2 Fig. 3 figure

Claims (1)

[Claims] Coil blocks 1 and 1 each have a U-shaped yoke 3 with magnetic pole pieces 2 at both ends, and a coil 4a wound around this yoke 3. Coil blocks 1 and 1 are arranged on both sides of the magnetic pole piece 2, respectively. a contact block 17 having a fixed contact 12 and a contact spring 15 having a movable contact 16 facing the fixed contact 12, to which the coil block 1 is fixed; a pair of armatures 22 facing the magnetic pole pieces 2; , amateur 2
A permanent magnet 26 interposed between the armature 22 and the contact spring 15 contact the contact spring 15 at one diagonal position of the armature 22.
to separate the fixed contact 12 and the movable contact 16, and the fixed contact 12 and the movable contact 16 at the other diagonal position.
a card 25 that allows contact with the fixed contact 1, and an armature block 21 that extends between the magnetic pole pieces 2 of the yoke 3 and is movable in a reversal angle about the central part;
2 is connected to the contact spring, and the fixed contact 120 angular displacement direction is
A polarized relay characterized in that it is designed to improve the conduction or disconnection speed between the fixed contact 12 and the movable contact 16.