JPS63193427A - Polar type electromagnet - Google Patents

Abstract

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

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a polarized electromagnet device used in a polarized electromagnetic relay. The object is to make it small and ultra-thin and to manufacture it economically.

[Conventional technology]

Conventionally, an electromagnetic device as shown in FIG. 5 has been known as a polarized electromagnetic relay.

(Japanese Unexamined Patent Publication No. 53-122752) This polarized electromagnetic relay is composed of two parts: an electromagnet device A and a contact spring mechanism B. In this figure, two armature plates 1 are made of a magnetic material, magnetized with different polarities by two permanent magnets 14, and their central parts are connected by a central base 15 made of synthetic resin. The armature 6 is constructed by insert molding. On both sides of both armature plates 1 are cards 2 formed from synthetic resin into a substantially U-shape.
is the installation. The inner surface of the card 2 is provided with a groove 12 into which the tapered part of the side end of the armature plate 1 fits, and the stepped part 13 of the armature plate 1 abuts the bottom piece of the card 2, and the tapered part is inserted into the slot. By press-fitting the portion into the groove 12, the card 2 is positioned and attached to the armature plate 1.

4.4 in the figure shows coil 3 wound around its body.
The armature 6 is a magnetic pole piece that is magnetically polarized to different polarities when the coil 3 is energized. The magnetic pole pieces 4.4 are respectively inserted into the opposing magnetic poles 7.8. Reference numeral 18 denotes a terminal block having a recess 19 in the center, into which the coil 3 with the armature 6 mounted is inserted. Terminal block 1
One end of a movable contact spring 5 is fixed to each of the four terminal plates 20 protruding from four locations on the upper surface of the movable contact spring 5.
The movable contact 22 attached to the other end is located at 4 on the top surface of the terminal block 18.
It can be freely contacted and separated from a fixed contact 23 installed upright at a corner.

The side protrusions 24 and 25 of the card 2 are connected to the contact springs 5, respectively.
When the armature 6 rotates due to the excitation of the coil 3, the movable contact spring 5 is brought into contact with the side protrusion 24.
．． The contacts are opened and closed by being pushed and returned to the position of 25.

[Problem that the invention seeks to solve]

In a polarized electromagnet device in which the armature 6 is rotated forward and backward by the movement of the electromagnet device, and this movement is transmitted to the contact spring mechanism to open and close the contacts, a coil wound around the core body is used. 3 is provided with a support shaft 17 extending vertically from the upper surface of the coil 3, and the armature 6 is rotatably supported on this support shaft 17. Therefore, the thick armature 6 can be stacked on the thick coil 3. Since it is a combined configuration, it is not possible to make it thinner. In addition, the structure is complicated and there are many parts, especially the armature 6.
It is necessary to separate the separator 16 that supports the separator 16, and furthermore, there are problems such as an increase in size due to poor space utilization efficiency.

[Means for solving problems]

In order to eliminate these drawbacks, the present invention takes into account the components constituting the electromagnet device, especially the configuration of the iron core and the armature.
The object of the present invention is to provide an ultra-thin polarized electromagnetic relay with stable characteristics by reducing the number of component parts and downsizing.

[Function and Examples]

Hereinafter, the present invention will be explained in detail based on the drawings. Fig. 1 is a schematic exploded perspective view of a polarized electromagnet device of the present invention.

In the figure, reference numeral 1 denotes a U-shaped iron core formed by press working, and the iron core is shaped so that the plate thickness surfaces 1a at both ends thereof form magnetic pole surfaces facing the armature 2.

In general, it is commonly known that forming parts by press working is suitable for mass production and contributes to cost reduction, and the parts of the present invention are shown in Fig. 2 in consideration of this point. It is manufactured by the process shown, +81
The figure is a front view seen from the plate thickness side (Figure B1 is a plan view showing the shape of the press punched shape, (Figure C1 is a front view with both ends of the iron core 1 bent at right angles in the same direction. , since the front portions 1a on both sides thereof are made to be magnetic pole faces, the length in the height direction and the longitudinal direction of the iron core l can be shortened. 1b is a hole for positioning when fixing to the base block 5. The IC is a fixed part when the lead piece 8 of the coil terminal 7 is insert molded into the support member 9 made of synthetic resin.

Reference numeral 2 denotes an armature block including a pair of plate-like armatures 2a.

2b are arranged in parallel, and a connecting member 4 made of a permanent magnet is integrally formed in an H-shape at the center of the lower part thereof, and a shaft hole 4a is provided in the center of the connecting member 4. 5 is a base block made of synthetic resin with a support shaft 5 in the center of its recess 5a.
b is provided protrudingly.

This support shaft 5b is inserted through a shaft hole 4a provided in the connecting member 4 of the armature block 2 and is rotatably supported. Thereafter, when the iron core 1 with the coil 3 wound thereon is fixed in the recess 5a of the heat block 5, the armatures 2a and 2b are rotated to a state where they are attracted or repelled by each magnetic pole surface 1a of the iron core 1. becomes.

Next, the magnetic circuit of the present invention will be explained in detail with reference to the operation explanatory diagram shown in FIG. 3. As shown in FIG.
The magnetic flux Φ1 generated from the permanent magnet 4 flows from the N pole of the permanent magnet 4 to the armature 2b to the iron core 1 to the armature 2a to the S pole of the permanent magnet 4, 2b
One piece of is held on the magnetic pole face 1a of the iron core 1.

Next, when the coil 3 is excited so as to generate a magnetic flux in the opposite direction to the magnetic flux Φ1 of the permanent magnet 4, the magnetic flux Φ2 changes between iron core 1 - armature 2a - iron core 1 and iron core 1 - armature as shown in figure (b). 2
b- Occurs in the direction of the arrow in the double passage of the iron core 1. The magnetic flux Φ2 of the armature 2b-iron core 1 is in the opposite direction to the magnetic flux Φ1 and cancels each other out, and the magnetic flux in this part produces a repulsive action, and the armature 2a
- The magnetic flux Φ2 flowing through the iron core 1 is superimposed on the magnetic flux Φ1 and produces an attraction effect. Therefore, the armatures 2a and 2b rotate about the support shaft 5b as a fulcrum. In other words, repulsion and attraction are generated in opposite directions diagonally around the support shaft 5b. After that, if the excitation of the coil 3 is canceled, (C
) As shown in the figure, magnetic flux Φ1'' of the permanent magnet 4 is generated in the direction of the arrow and holds the armatures 2a and 2b. At this time, as in the embodiment of the present invention shown in FIG.
By mounting the movable contact spring 11 on the support member 6 made of synthetic resin, the movable contact is opened and closed with the opposing fixed contact, and the respective contacts are switched. be exposed.

〔Effect of the invention〕

According to the present invention having the above configuration, great effects can be obtained as shown below.

(1) By placing the iron core between a pair of armatures,
Can be configured to be ultra-thin.

(2) By providing the rotating support shaft in the pace mold, a separator is no longer necessary, the number of parts is minimized, and the structure is extremely simplified, which reduces the number of manufacturing steps and contributes to cost reduction.

(3) Although it required two permanent magnets on both sides of the rotating shaft hole and a central base made of synthetic resin that constituted their bearings, the shaft hole could be provided directly there by using the permanent magnets as a connecting member between the armatures. As a result, only one permanent magnet is required, reducing the number of parts.

(4) Furthermore, since the movable contact spring is mounted on the armature via a support member made of synthetic resin, the drive card, which was conventionally necessary, can also be eliminated.

[Brief explanation of the drawing]

FIG. 1 is a schematic exploded perspective view of a polarized electromagnet device of the present invention;
Fig. 2 is a process diagram showing the shape of the iron core, which is a component of the present invention, and Fig. 3 is an explanatory diagram of the operation of the present invention (Fig. 81 shows the coil 3
Figure ('b) shows the state in which the coil 3 is energized, and Figure (a) shows the state in which the operation has been completed. FIG. 4 shows a polarized electromagnetic relay according to an embodiment of the present invention, (81
The figure is a plan view, and the figure (b) is a front view. FIG. 5 shows a conventional polarized electromagnetic relay. l is the iron core, 2 is the armature, 3 is the coil, 4 is the permanent magnet, 5
is the base block, and 5b is the support shaft.

Claims (3)

[Claims] (1) In a polarized electromagnet device consisting of an iron core wound with a coil, an armature, and a permanent magnet, a pair of armatures are arranged in parallel, and a connecting member having a shaft hole is fixed at the center of the lower part. An armature block configured in an H shape, and the H
A U-shaped iron core is inserted between the shaped armature blocks, the lower part of the magnetic pole is fixed in the recess of the base block, and the shaft hole provided in the connecting member is connected to the support shaft provided in the bottom of the recess of the base block. A polarized electromagnet device characterized by being rotatably supported. (2) The polarized electromagnet device according to claim 1, wherein the connecting member is a single permanent magnet. (3) The polarized electromagnet device according to claim 1, wherein the plate thickness surface formed by bending both end portions of the iron core at right angles to the plate thickness direction is the magnetic pole surface.