JP2522448Y2 - Electromagnetic relay device - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to an electromagnetic relay device, and more particularly, to an electromagnetic relay device in which a plurality of electromagnetic relays, which are in great demand for automotive electrical products, are integrated.

[Conventional technology]

In recent years, along with the sophistication of electric devices for automobiles, there has been a tendency for electromagnetic relays to be frequently used to control the electric devices. Electrical devices for automobiles include automatic door locks, power windows, automatic seat belts, automatic sunroofs, automatic seat controls, retractable headlight controls, and the like. The basic function of each of these devices is to control the forward / reverse current to the electric load in order to rotate the armature of the motor or the plunger of the solenoid in the forward / reverse or forward / reverse direction. Therefore, these devices require at least two electromagnetic relays.

At present, a twin electromagnetic relay device in which two flexure-type electromagnetic blocks are housed in one case has become mainstream.

As shown in FIG. 3, the twin electromagnetic relay includes two fracture-type electromagnetic blocks 110 and 220 having the same structure.
A make-side fixed contact terminal member 53, fixed and arranged on a flat insulating base 330 so as to be point-symmetrical, and further into two substantially U-shaped slots 51, 52 at the center on the insulating base 330, The structure is such that the break-side fixed contact terminal member 54 is press-fitted and fixed.

The insulating base 330 has U-shaped slots 51, 52 for mounting the fixed contact terminal members 53, 54 on the make side and the break side at the center, and the electromagnetic blocks 110, 220 are point-symmetrically arranged on both sides thereof. Relatively wide slit-shaped grooves 331 and 332 are provided for separately mounting. This slit-shaped groove 331,3
32 are provided with electromagnetic blocks 110 and 220, and movable contacts 112 and 222
Can be operated to appropriately control the opening and closing of a predetermined circuit. Reference numerals 61 and 62 are electromagnetic blocks 110 and 2 respectively.
Reference numeral 440 indicates a cover through which the movable contact side output terminals 111 and 221 for the 20 are inserted.

[Problems to be solved by the invention]

In this conventional twin electromagnetic relay, a technique is adopted in which the fixed contact terminal members on the make side and the break side are individually press-fitted into the slots 51, 52 on the base. For this reason, in order to obtain the accuracy of the contacts facing each other, the substantially U-shaped slots 51 and 52 provided in the base must be formed with high precision. However, since the base is usually formed by using plastic as a material, it is difficult to obtain processing accuracy for a slot or the like. Therefore, as described above, there is actually a problem in the contact opposition.

Further, the failure rate of contact contact resistance due to press-fit burrs or the like generated when press-fitting metal into plastics is also affected.

[Purpose of the invention]

An object of the present invention is to improve the disadvantages of the conventional example, and in particular, to improve the productivity and improve the productivity of the contacts when two electromagnetic relays are integrally provided. It is to provide a relay device.

[Means for solving the problem]

In the present invention, an iron core on which a coil is wound, a yoke fixed to one end of the iron core, an armature arranged to face the other end of the iron core and attracted to the iron core by energizing the coil, and a movable armature It has two flexure-type electromagnetic blocks that have contacts and have a movable contact spring that is linked to the armature. Also, a pair of make-side contact terminals each having a make-side contact facing one of the movable contacts of each electromagnetic block at one end, and a break-side contact facing the movable contact of each of the electromagnetic blocks at one end. And a pair of break-side contact terminals. A make-side contact terminal and a break-side contact terminal are provided at the center, and a flat insulating base provided with the two electromagnetic blocks in a point-symmetric manner on both sides thereof. Then, in a state where an electrical connecting portion connecting the two fixed contacts on the make side is exposed to the outside, each central portion of the make-side contact terminal and the break-side contact terminal is integrally formed by a contact terminal fixing block made of an insulating member. , And a through hole is formed in the fixed block, which can cut an electric connecting portion connecting the two fixed contacts on the break side as required. This aims to achieve the above-mentioned object.

[Example of the invention]

Hereinafter, an embodiment of the present invention will be described with reference to FIGS.

The embodiment shown in FIGS. 1 and 2 has a core 11 on which a coil is wound, and a yoke fixed to one end of the core 11.
15, an armature 16 disposed opposite to the other end of the iron core 11 and attracted to the iron core 11 by energizing the coil 12, and a movable contact spring 18 having a movable contact 18A and interlocking with the armature 16. Flexure-shaped electromagnetic blocks 1,2
It has.

A pair of make-side contact terminals 31 each having at one end thereof make-side contacts 31A, 31A opposed to the movable contacts 18A of the respective electromagnetic blocks 1, 2; It has a pair of break-side contact terminals 36 each having at one end a break-side contact 36A facing the contact 18A.

Further, a make-side contact terminal 31 and a break-side contact terminal 36 are provided at the center, and a flat insulating base 3 provided with the two electromagnetic blocks 1 and 2 mentioned above on both sides thereof in a point-symmetric manner.

Then, make-side contact terminal 31 and break-side contact terminal 36
The central portions are integrally connected by a fixed block 4 made of an insulating member.

The fixed block 4 has through holes 25, 25 through which the break terminal connecting portion 36R connecting the two fixed contact terminals 36, 36 on the break side described above can be cut as required.

More specifically, in FIG. 1, the flexure-type electromagnetic blocks 1 and 2 have the same structure, have an iron core 11 therein, and a spool 13 around which a coil 12 is wound, and a set of externally extending coils. A terminal 14 and a yoke 15 mechanically and magnetically engaged with one end of the iron core 11 are provided. In addition, armature
A substantially L-shaped or arcuate hinge spring mechanically engaged with a rivet or the like and capable of mechanically and magnetically engaging and holding one end of the yoke 15 and the armature 16 and performing an electrical conduction function. 17, a movable contact spring 18 having a movable contact 18A, and a movable contact side output terminal 15A that is electrically connected to the movable contact 18A.

The movable contact side output terminal 15A is connected to the first end from one end of the yoke 15.
It protrudes downward in the figure. The hinge spring 17 and the movable contact spring 18 are formed from one integrated spring member. The movable contact side output terminal 15A may be formed so as to protrude from the spring member. The make-side contact terminal 31 is made of a substantially U-shaped conductive member, and has a pair of make-side contacts 31A, 31A and at least one external lead-out piece 31B. Break side contact terminal 36
Is formed of a conductive member also formed in a substantially U-shape, has a set of break contacts 36A, 36A and at least one external lead-out piece 36B, 36B, and further includes a connecting portion of both terminal pieces 36B, 36B. A protruding portion 36E is press-fitted and fixed to the base 3 at the center.

In the fixed contact terminal block 4, the break-side contact terminal 36 and the make-side contact terminal 31 are integrally formed by insertion molding using an insulating resin or the like.

The flat base 3 is made of an electrically insulating member, fixes the electromagnetic blocks 1 and 2 described above, and
Holes 3A, 3B through which 4 and movable contact side output terminal 15A penetrate
Similarly, the electromagnetic block 2 is fixed in a point-symmetrical positional relationship on the same surface of the base 3, and the lead terminal 14 and the output terminal 15A are fixed.
Holes 3C and 3D through which the fixing block 4 is fixed, and a hole 3E into which the protruding portion 36E is press-fitted and fixed to fix the fixing block 4; It has holes 3G and 3H for penetrating the piece 36B respectively.

Make-side contact terminal 31 has two make-side terminals 31A, 31A
Are connected to each other. The make terminal connecting portion 31R protrudes upward as shown in FIG. Because of this, this make terminal connection section
31A has a configuration in which a central portion thereof protrudes outward from the fixed block 4. A break terminal connecting portion 36R connecting the two break-side contact terminals 36, 36 is embedded in the fixed block 4 described above. The fixed block 4 has a break terminal connecting portion as described above.
Cut 36R as necessary and cut off two break-side contact terminals 36,
Cutting square holes 4A, 4A for electrically isolating 36 are provided. X ₂ each show cut lines.

For this reason, along the cutting lines X ₁ and X ₂ , the break terminal connection portion
By cutting 36R, two break-side contact terminals 3
Electrical continuity between 6,36 is cut off. Similarly, by cutting a make terminal connection portion 31R along a line X _1, electrical continuity between the two make contact terminal 31 is cut off.
In this way, the electromagnetic blocks 1 and 2 are completely independent of the outside.

In the embodiment thus formed, the coil 12
When no current is supplied to the movable contact 18A, the movable contact 18A is in contact with the break-side contact 36A by the elastic support of the hinge spring 17. When the coil 12 is energized to excite the core 11, the core
The movable contact 18A moves away from the break-side contact 36A in conjunction with the armature 13 attracted to the end of the contact 11, and the make-side contact 31A
Contact This completes the selection operation for various circuits.

[Effect of the invention]

As described above, according to the present invention, a method such as insertion molding is used in which the make-side contact terminal and the break-side contact terminal are preliminarily made of insulating resin at the center of the two electromagnetic blocks arranged point-symmetrically on the base. In addition, the contact block is integrated with a fixed block using a slab, and it is press-fitted into the base, so that the contact opposition is extremely accurate. In addition, since there is only one press-fitting point, the contact points such as burrs The contact resistance defect rate can be reduced, and the number of pieces at the time of assembly is reduced, thereby improving productivity.
Furthermore, it is possible to provide a practical electromagnetic relay device that can realize two electrically independent relays with one component.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing an embodiment of the present invention, FIG. 2 is an enlarged explanatory view showing a fixed block portion of FIG. 1, and FIG. 3 is an exploded perspective view showing a conventional example. 1,2 ... electromagnetic block, 3 ... plate-shaped insulating base, 4 ...
… Fixing block, 4A …… Square hole for cutting, 11 …… Iron core, 12…
... coils, 15 ... yoke, 16 ... armature, 18 ...
Movable contact spring, 18A… Movable contact, 31… Make side contact terminal, 31A… Make side contact, 36 …… Break side contact terminal, 36A …… Break side contact.

Continuing on the front page (72) Inventor Tatemi Ide 5-7-1 Shiba, Minato-ku, Tokyo Within NEC Corporation (72) Inventor Takashi Chiba 1 Igarose, Ichinoseki-shi, Iwate Tohoku NEC Corporation (72 ) Inventor Tsutomu Ono 1 Togoku NEC Corporation, Ichinoseki City, Iwate Prefecture (72) Inventor Suejiro Ikeda 1 Togoku Shellfish, Ichinoseki City, Iwate Prefecture Tohoku NEC Corporation (56) References JP Showa 49 -27857 (JP, A) JP-A-49-116557 (JP, A) JP-A-59-214125 (JP, A) JP-A-62-144038 (JP, U) JP-A-1-142137 (JP, U) )

Claims (1)

(57) [Scope of request for utility model registration] 1. An armature on which a coil is wound, a yoke fixed to one end of the iron core, and an armature arranged opposite to the other end of the iron core and attracted to the iron core by energizing the coil. And two flexure-type electromagnetic blocks having a movable contact and a movable contact spring interlocked with the armature are provided, and a make-side contact opposed to the movable contact provided in each of the electromagnetic blocks is provided at one end. A pair of make-side contact terminals, and a pair of break-side contact terminals having at one end a break-side contact facing the movable contact of each of the electromagnetic blocks; A break-side contact terminal is provided at a center portion, and the two electromagnetic blocks are provided on both sides thereof in a point-symmetrical manner, and a plate-shaped insulating base is provided for supporting the two electromagnetic blocks. In a state where the electrical connection portion is exposed to the outside, the respective center portions of the make side contact terminal and the break side contact terminal are integrally connected by a contact terminal fixing block made of an insulating member, and An electromagnetic relay device, characterized in that a through-hole, which can cut an electrical connecting portion connecting the two fixed contacts as required, is formed in the fixed block.