JPH028354Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field] This invention relates to a polarized relay that can be easily miniaturized.

[Background technology]

A polarized relay is known in which an armature block is moved forward and backward by the action of an electromagnetic block, and this movement is transmitted to an operating spring of a contact mechanism to open and close a contact.

Incidentally, there is a strong demand for miniaturization of relays for mounting on printed circuit boards, but in the conventional polarized relays described above, it has been difficult to ensure a sufficient insulation distance between the magnetic circuit such as the yoke or iron core and the coil terminal. This has been an obstacle to miniaturizing relays.

[Purpose of invention]

In view of the above circumstances, this invention aims to provide a polarized relay in which an insulation distance between a magnetic circuit and a coil terminal can be easily obtained.

[Disclosure of invention]

In order to achieve the above object, this device is equipped with an electromagnetic device consisting of a combination of an electromagnetic block and an armature block, and the armature block moves forward and backward under the action of the electromagnetic block, and this movement is transmitted to the contact mechanism. It is a polarized relay whose contacts are opened and closed by the electromagnetic block, and has an iron core and a yoke.The iron core has a coil wound around it and one end serves as a central magnetic pole, and the yoke has a U-shaped planar shape. , both tips form a pair of opposing magnetic poles with the central magnetic pole part of the iron core in between, and the central rear part is connected to the other end of the iron core, and the change in polarity between the central magnetic pole part and the opposing magnetic pole part A device in which the armature block is movable, characterized in that the iron core is provided in the center of the U-shaped yoke and at a position away from the plane containing the U-shaped portion of the yoke. The main topic is polar relays. This will be explained in detail below based on drawings showing examples thereof.

FIG. 1 shows an embodiment of the polarized relay according to this invention. This polarized relay includes an electromagnetic device consisting of a combination of an electromagnetic block and an armature block. The electromagnetic block 1 includes a yoke 2 which is U-shaped in plan, and an iron core 3 is inserted into a hole 2b in a base 2a that hangs down in a T-shape at the rear of the yoke 2.
One end is press-fitted and fixed as shown by the dashed line in the figure. That is, since the yoke 2 has a hole 2b located slightly below and away from the U-shaped main body with both ends extending horizontally, the yoke 2 is attached so as to extend horizontally from the hole 2b. The iron core 3 is located at the center of the U-shaped portion of the yoke 2,
It will be placed a little further away below the horizontal plane that includes the U-shaped portion. A coil 4 is wound around the iron core 3 via a coil frame 4a. Frame 4a
The coil terminal 4b is visible at the bottom. On the other hand, the armature block 5 combined with this has a permanent magnet 7 arranged between two magnetic pieces 6, 6, and the same side ends of both magnetic pieces 6, 6 are connected to the permanent magnet. By positioning it at both ends of the magnetization direction of 7,
As shown in the diagram, it is U-shaped in plan. The electromagnetic block 1 and the armature block 5 have a central magnetic pole portion 8a, with the other end of both magnetic pieces 6, 6 of the armature block being formed at one end of the iron core 3 of the electromagnetic block 1.
and a pair of opposing magnetic pole portions 8b and 8c formed at both ends of the U-shaped yoke 2 are inserted into two gaps formed by the two. When the direction of the current flowing through the coil 4 is changed, the armature block 5 moves in the left and right directions (forward and reverse directions). The electromagnet device having such a configuration is fixed on the base 9.
At this time, in order to accurately guide the forward and reverse movement of the armature block 5, two recesses 9a are provided on the left and right on the surface of the base 9 facing toward the armature block 5, that is, on the top surface. The convex portions 5c provided on the left and right sides of the bottom surface of 5 are fitted into each other. The convex portion 5c is preferably formed integrally with the bottom surface of the spring driving portion (card) 5b, which is formed by a bulging side portion of a synthetic resin covering 5a surrounding the armature block 5. A slightly larger hole 9b is also formed in the upper surface of the base 9 at the center of the two holes 9a, 9a, into which the bottom of the central magnetic pole portion 8a of the iron core 3 is press-fitted. If you do this,
The iron core 3 itself also comes to be stably fixed. Contact mechanisms 10 are provided at the left and right sides of the base 9, that is, at the left and right sides of the electromagnet device. The contact mechanism 10 includes a fixed contact terminal 11
a, 11b and a spring fixed terminal 12, the free end of the operating spring 13 having one end fixed to the terminal 12 faces between the fixed contact terminals 11a, 11b,
The contacts are opened and closed by the pressing and releasing action of the spring driving portion 5b as the armature block 5 moves forward and backward. A contact mechanism 10 and input/output terminals for the coil 4 are provided on the lower surface of the base 9.

The electromagnet device and contact mechanism on the base 9 are covered with a cover 14.

In the above embodiment, the base 9 is provided with a concave portion and the armature block 5 is provided with a convex portion, but the concave and convex portions may be formed in the opposite manner.

[Effect of idea]

As seen above, in the polarized relay according to this invention, the iron core is provided at the center of the U-shaped yoke and at a position away from the plane that includes the U-shaped portion of the yoke, so the coil The position of the terminal is shifted from the yoke plane, and the insulation distance between the coil terminal and the magnetic circuit portion such as the yoke can be increased without increasing the overall width, making it possible to downsize the relay.

[Brief explanation of the drawing]

FIG. 1 is an exploded perspective view showing an embodiment of the polarized relay according to this invention. 1...Electromagnetic block, 2...Yoke, 2a...
... Base, 3 ... Iron core, 4 ... Coil, 4b ... Coil terminal, 5 ... Armature block, 10 ... Contact mechanism.

Claims (1)

[Claims for Utility Model Registration] (1) Equipped with an electromagnetic device consisting of a combination of an electromagnetic block and an armature block, the armature block moves forward and backward by the action of the electromagnetic block, and this movement is transmitted to the contact mechanism and the contact is activated. It is a polarized relay that opens and closes the relay, and is equipped with an iron core and a yoke on an electromagnetic block.The iron core has a coil wound around it and has one end as a central magnetic pole, and the yoke is U-shaped in plan, with both sides The tips form a pair of opposing magnetic poles with the central magnetic pole section of the iron core in between, and the central rear portion is connected to the other end of the iron core, and the change in polarity between the central magnetic pole section and the opposing magnetic pole section creates an armature. A polarized relay in which the block is movable, characterized in that the iron core is provided at the center of the U-shaped yoke and at a position away from the plane containing the U-shaped portion of the yoke. . (2) The end of the iron core is T at the rear of the U-shaped yoke.
A polarized relay according to claim 1, which is caulked to a base that hangs down in the shape of a letter.