JPH0534643U - Electromagnetic relay - Google Patents

Abstract

(57) [Abstract] [Purpose] An object of the present invention is to provide an electromagnetic relay capable of accurately and firmly positioning a terminal member. [Structure] The coil block 15 includes a spool 17 on an iron core.
The coil 19 is wound via the. In the movable block 5, the movable iron piece 6 and the movable contact piece 7 are arranged side by side and integrated, and the movable block 5 is rotatably disposed below the coil block 15. Fitting portions 25 are formed on the end faces of the collar portions 18 formed at both ends of the iron core. On the other hand, the collar portion 1
8 of the terminal members 20 and 21 integrated with
An insulating plate 22 is provided on a, and a fitting receiving portion 26 capable of fitting with the fitting portion 25 is formed on the insulating plate 22.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an electromagnetic relay.

[0002]

[Prior Art]

 In recent years, along with the downsizing of electronic devices, the electromagnetic relay is also tending to downsize.However, in such a small electromagnetic relay, for example, the insulation distance between the coil and the movable contact piece becomes smaller, which causes malfunction. As a countermeasure against this, an electromagnetic relay having the structure shown in FIG. 4 has recently been proposed in Japanese Patent Application No. 02-319923.

This electromagnetic relay is roughly composed of a first base block 1, a movable block 5, a second base block 10, a coil block 15, and a case (not shown). The first base block 1 is a plate-shaped body made of a synthetic resin material, and locking claw portions 2 are provided so as to face both ends of both end edges. Common terminals 3 and 3 are insert-molded in the central portions on both sides of the first base block 1, and the upper ends of the common terminals 3 and 3 project from the upper surface of the first base block 1 and are bent outward. As a result, the welded portions 4 and 4 are formed.

In the movable block 5, movable contact pieces 7, 7 are arranged in parallel on both sides of a plate-shaped body 6 made of a magnetic material, and integrated by a central support base 9. On both sides of the central support base 9, A substantially T-shaped hinge spring portion 8, 8 extends from a substantially central portion of the movable contact piece 7, 7 and is welded to the weld portion 4 of the common terminal 3.

The second base block 10 is a plate-like body made of a synthetic resin material, and has a rectangular hole 11 elongated in the width direction at the center thereof, and fixed contact pieces 12 are integrated at both ends. There is. One end of each of the fixed contact pieces 12 projects from both side edges of the end of the second base block 10 and is provided with a fixed contact 13, and the other end projects from the lower surface to form a terminal portion 14.

In the coil block 15, a permanent magnet 16 is brought into contact with an iron core (not shown) having a substantially U-shaped cross section so as to have a substantially E-shaped cross section at a substantially central portion thereof, and the magnetic pole surfaces at both ends of the iron core and the permanent magnet 16 are provided. The coil 17 is wound around the body of the spool 17 after being integrated with the spool 17 except for the tip end of the coil 17, and a pair of coil terminals 20 is provided on the collars 18 and 18 formed at both ends of the iron core. , 20 and a pair of positioning terminals 21, 21 are respectively integrated. The leg portions 20a and 21a of the terminals 20 and 21 project from both end faces (collar portion 18) of the coil block 15 and are integrated by an insulating plate 22. Further, on both sides of the lower end of the insulating plate 22, lock receiving portions 23 for locking the locking claw portions 2 of the first base block 1 are formed.

In the electromagnetic relay, the movable block 5 is placed on the first base block 1, and the hinge spring portion 8 of the movable contact piece 7 is welded to the welding portion 4 of the common terminal 3. Then, the second base block 10 and the coil block 15 are sequentially placed, the leg portions 20a, 21a of the coil terminal 20 and the positioning terminal 21 are bent, and the lock receiving portion 23 of the insulating plate 22 is fixed to the first base block. The second base block 10 and the movable block 5 are held between the first base block 1 and the coil block 15 by being locked to the first locking claw portion 2. Thus, since the second base block 10 is interposed between the movable block 5 and the coil block 15, the insulation distance between the coil 19 and the movable contact piece 7 can be increased even in a small space. . After that, the assembly work is completed by covering the case.

[0008]

[Problems to be solved by the device]

 However, in the above-mentioned electromagnetic relay, the insulating plate 22 is attached to the first base block 1 only by locking the elastic locking claw portion 2 to the locking receiving portion 23, so that the insulating board 22 is mounted on the printed circuit board. At the time of mounting, the locking claw portion 2 may be elastically deformed to cause a positional displacement in the width direction of the insulating plate 22. In this case, the leg portions 20a, 21a of the coil terminal 20 and the positioning terminal 21 are not inserted into the through holes of the printed circuit board, but are deformed by coming into contact with the surface of the printed circuit board or the like and cannot be mounted well.

Further, even after mounting, the leg portions 20a, 21a of the coil terminal 20 or the positioning terminal 21 are fixed to the collar portion 18 of the spool 17 at their bases, although the intermediate portions thereof are fixed by the insulating plate 22. Since it was only supported, it was insufficient in terms of strength.

In view of the above problems, an object of the present invention is to provide an electromagnetic relay capable of accurately and firmly positioning a terminal member.

[0011]

[Means for Solving the Problems]

 In order to achieve the above object, the present invention integrates a coil block formed by winding a coil around an iron core through a spool and a movable contact piece on a movable iron piece side by side so as to be rotatable below the coil block. A movable block to be disposed, and a fitting portion is formed on an end surface of a collar portion formed at both ends of the spool, and insulation provided on a leg portion of an end member integrated with the collar portion. The plate is provided with a fitting receiving portion that can be fitted into the fitting receiving portion.

[0012]

[Action]

 According to the present invention, when the legs of the terminal member are bent, the fitting portion of the spool fits into the fitting receiving portion of the insulating plate, and the insulating plate (terminal member) is accurately attached to the coil block. In addition, it is firmly positioned.

[0013]

【Example】

 Next, an embodiment of the electromagnetic relay according to the present invention will be described with reference to FIGS. 1 to 3. This electromagnetic relay is different from the electromagnetic relay shown in FIG. 4 in that a collar portion of a spool 17 constituting a coil block 15 is formed. Since only the shapes of 18 and the insulating plate 22 are different, the other parts have almost the same configuration, and therefore, corresponding parts will be denoted by the same reference numerals and description thereof will be omitted.

That is, as shown in FIG. 2, the collar portion 18 of the spool 17 is such that the leg portions 20 a, 21 a of the coil terminal 20 or the positioning terminal 21 project from both upper end portions of the end surface of the collar portion 18 of the collar portion 18. A fitting portion 25, which is a protrusion extending in the vertical direction, is provided in the middle of the end surface.

On the other hand, the insulating plate 22 is formed by molding a synthetic resin material into a substantially L-shaped cross section, and is insert-molded with the coil terminals 20 (see FIG. 3) or the leg portions 20 a, 21 a of the positioning terminals 21. On the vertical wall 22a of the insulating plate 22, a fitting recess (fitting receiving portion) 26 having a predetermined size and a predetermined depth is formed from the upper edge on the inner surface of the central portion thereof and is fitted with the fitting portion 25. It is like this. A gauge hole 27 is formed below the vertical wall 22a, and both ends of the lower end of the vertical wall 22 are laterally extended in a crank shape to serve as lock receiving portions 23.

In the electromagnetic relay provided with the coil block 15, the movable block 5, the second base block 10 and the coil block 15 are sequentially arranged on the first base block 1 in the same manner as in the conventional example, and then the coil terminal is arranged. 20 and the legs 20a and 21a of the positioning terminal 21 are bent to lock the lock receiving portion 23 of the insulating plate 22 to the locking claw portion 2 of the first base block 1, the fitting portion of the insulating plate 22 26 is fitted with the fitting portion 25 of the collar portion 18 of the spool 17.

As a result, the leg portions 20a and 21a of the coil terminal 20 and the positioning terminal 21 are accurately positioned and firmly fixed so as not to be displaced in the width direction. Then, after covering the case, when mounted on a printed circuit board (not shown), the leg portions 20a, 21a of the terminals 20, 21 can be surely inserted into the through holes of the printed circuit board, and after mounting, it is reinforced in terms of strength. Problems such as conventional deformation are unlikely to occur.

In this embodiment, the fitting concave portion 26 is formed in the insulating plate 22 and the fitting portion 25 is formed in the collar portion 18 of the spool 17, respectively, but the reverse order is also possible. It is a theory.

[0019]

[Effect of the device]

 As is clear from the above description, according to the electromagnetic relay of the present invention, when the coil terminal and the terminal member are bent, the fitting receiving portion of the insulating plate and the fitting portion of the collar portion of the spool are fitted together. Therefore, the leg portions of the coil terminal and the terminal member are accurately and firmly fixed without displacement. As a result, when the electromagnetic relay is mounted on the printed circuit board, the legs can be smoothly deformed without causing problems such as deformation.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of an electromagnetic relay according to an embodiment.

FIG. 2 is a partial perspective view of the coil block shown in FIG.

3 is a perspective view of the insulating plate shown in FIG. 1. FIG.

FIG. 4 is an exploded perspective view of an electromagnetic relay according to a conventional example.

[Explanation of symbols]

5 ... Movable block, 6 ... Movable iron piece, 7 ... Movable contact piece, 1
5 ... Coil block, 17 ... Spool, 18 ... Collar part, 1
9 ... Coil, 20 ... Coil terminal, 21 ... Positioning terminal, 20a, 21a ... Leg part, 22 ... Insulating plate, 25 ... Fitting part, 26 ... Fitting recess (fitting receiving part).

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Kazumi Sako, Omron Co., Ltd., No. 10, Hanazono Dodo-cho, Ukyo-ku, Kyoto City, Kyoto Prefecture

Claims (1)

[Scope of utility model registration request] 1. A movable block rotatably disposed below the coil block, in which a coil block formed by winding a coil around an iron core via a spool and a movable contact piece are arranged side by side and integrated with the movable iron piece. And a fitting portion is formed on an end surface of a collar portion formed at both ends of the spool, while the fitting receiving portion is provided on an insulating plate provided on a leg portion of a terminal member integrated with the collar portion. An electromagnetic relay characterized in that a fitting receiving portion which can be fitted to is formed.