JPH0212725A - Electromagnetic relay - Google Patents

Abstract

PURPOSE:To make an electromagnetic relay compact by providing two movable contacts able to be operated independently and by making fixed make-contacts and fixed break-contacts to which the said movable contacts are connected or disconnected as a unit respectively. CONSTITUTION:The 1st. and the 2nd. electromagnetic blocks 100, 200 are attached onto a base 500 parallel in the longitudinal direction symmetrically to the left and the right, and a fixed make-contact terminal member 300 is fixed to the base 500 so as that the leading out terminal 33 is inserted through an attaching hole 55 on the base 500, and a fixed break-contact terminal member 400 is fixed to the base 500 so as that the leading out terminal 43 is inserted through an attaching hole 56 on the base 500. Movable contact spring members 8 are fixed to the base 500 so as that the movable contact terminals 10 are inserted through attaching holes 53, 54 respectively symmetrically with respect to the left and the right. Fixed make-contacts 31, 32 and fixed break-contacts 41, 42 are constructed as a unit respectively on the common base 500, thereby the relay can be made compact.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an electromagnetic relay suitable for controlling automobile electrical components and the like involving forward and reverse rotation of a motor and forward and reverse operation of a plunger.

[Conventional technology] In recent years, the focus of automobile development has been toward automation and upgrading of various onboard equipment, such as automatic door locks, power windows, and automatic seat belts.

Various automotive electrical components such as automatic sunroofs, automatic seat controls, and retractable headlight controls have been developed.

The basic mechanism of these automotive electrical components is to rotate the armature of a motor in forward and reverse directions, or to operate the plunger of a solenoid in forward and reverse directions, and generally uses two electromagnetic relays as shown in Figure 5. The circuit configuration is as follows. In addition,
FIG. 6 is a waveform diagram of drive pulses for operating the electromagnetic relay and current flowing through the motor.

That is, when one electromagnetic relay A is driven by a drive pulse X, a current i flows through the motor M from the battery D to the electrical contact al of the electromagnetic relay A.

For example, the current flows in the positive direction through the electrical contact b2 of the electromagnetic relay B. Also, Tl! When 1m relay A is released and the other electromagnetic relay B is driven by drive pulse y, electric contacts b8. A current i flows through the electrical contact a2 of the electromagnetic relay A in the opposite direction to the above-mentioned direction. In this way, by driving either one of the electromagnetic relays A and B, the circuit configuration was such that the motor M was rotated in a desired direction.

[Issues to be solved f! ] As mentioned above, the reason why the basic electric circuit of conventional automobile electrical components uses two electromagnetic relays is because electromagnetic relays can only perform simple on/off operations. As a result, the structure of automobile electrical components becomes complicated, and there is a problem in that it is not possible to save space and reduce the size of the vehicle in order to meet the needs of higher mechanical efficiency and diversification. This is true not only for automotive electrical components, but also for various electrical devices such as electromagnetic relays shown in FIG. 5, which are comprised of two basic electrical circuits.

The present invention has been made in view of the above-mentioned problems.
The purpose of the present invention is to provide an electromagnetic relay that is equipped with two movable contacts that can each operate independently, and that can realize space saving and miniaturization by integrating a fixed make contact and a fixed break contact that connect and separate these movable contacts. .

[Means for Solving the Problems] In order to achieve the above object, the present invention has first and second electromagnetic blocks, a fixed make contact terminal member having two fixed make contacts, and a fixed make contact terminal member having two fixed break contacts. A MIFIi relay comprising a fixed break contact terminal member and a base made of a flat electrically insulating material.

The first and second electromagnetic blocks each have a left-right symmetrical structure, and include a coil with a core inside and wound around a spool, a yoke mechanically and magnetically connected to one end of the core, and this yoke. a hinge spring fixed to the yoke; an armature movably supported by the hinge spring with the end of the yoke as a fulcrum and provided facing the other end of the core; and a movable contact provided on the armature. an interlocking movable contact spring member, the base fixes the first and second electromagnetic blocks side by side in a symmetrical posture in the longitudinal direction, and also includes the fixed make contact terminal member, the fixed break contact terminal member, and The structure is such that the movable contact spring member is fixed.

[Example] Hereinafter, an example of the present invention will be described with reference to the drawings.

Figure 1 is an exploded perspective view of the electromagnetic relay according to this embodiment;
The figure is also a perspective view showing an internally assembled state.

In the drawing, loo is a flexure-shaped first electromagnetic block, and 200 is a flexure-shaped second electromagnetic block. Each of these electromagnetic blocks Zoo, 200 has a core 1 therein and a coil 3 wound around a spool 2.
have. Both ends of the conducting wire forming the coil 3 are connected to two external lead-out terminals 4 provided on the spool 2, respectively.

Further, a yoke 5 is provided near the side of the coil 3.
One end of this yoke 5 is mechanically and magnetically connected to one end of the core l. Reference numeral 6 denotes an armature formed in a substantially dogleg shape, and one end thereof is provided with a window portion 6a and a convex insulator 6b. The armature 6 is movably supported around the end of the yoke 5 as a fulcrum by a hinge spring 7 which has one end engaged with the yoke 5 and the other end inserted into the window 6a and magnetically coupled. The other end of the armature 6 is supported by the yoke 5 and faces the other end of the core l, and is attracted to the excited core l when the coil 3 is energized.

The hinge spring 7 is made of a conductive material and is connected to the yoke 5 at one end. Reference numeral 8 denotes a movable contact spring member made of an elastic material and formed into a substantially L-shape, and is provided with movable contacts 9 on both sides of its tip.

In the above configuration, the first and second electromagnetic blocks 100.20
0, but the difference is that the assembled state has a symmetrical structure.

Reference numeral 300 designates a fixed make contact terminal member, which is formed in a T-shape, has two fixed make contacts 31 and 32 at both ends, and has an external lead-out terminal 33 extending downward. . The fixed break contact terminal member 400 is also formed in a substantially T-shape, has two fixed break contacts 41 and 42 at both ends, and has an external lead-out terminal 43 extending downward.

A base 500 is made of an electrically insulating material, and includes the first and second electromagnetic blocks 100, 200 and the fixed make contact terminal member 300. Fixed break contact terminal member 4
Fix 00. That is, reference numerals 51 and 52 denote mounting holes through which the external lead-out terminals 4 of each electromagnetic block are inserted to support and fix them, and 53 and 54 are attachment holes through which the movable contact terminals 10 of each movable contact spring member 8 are inserted and supported and fixed. It is. Also,
55 and 56 are fixed make contact terminal members 300. Each external lead-out terminal 33.43 of the fixed break contact terminal member 400
These are mounting holes that are inserted through and supported and fixed.

The first and second electromagnetic blocks Zoo, 200 are mounted on the base 500 side by side in the longitudinal direction in bilaterally symmetrical positions. Further, in the fixed make contact terminal member 300, the external lead-out terminal 33 is inserted into the mounting hole 55 of the base 500 and fixed. Similarly, fixed break contact terminal member 40
0, the external lead-out terminal 43 is inserted into the mounting hole 56 of the base 500 and fixed.

Each contact terminal member 300 supported and fixed in this manner.
Each of the contacts 31 and 41 of 400, and 32 and 42 are placed in opposing positions, respectively. The movable contact spring member 8 inserts and fixes the movable contact terminal 10 into the mounting hole 53, 54 of the base 5oo so that the movable contact terminal 10 has a symmetrical posture. The movable contacts 9, 9 of the movable contact spring member 8 are connected to the respective contacts 31, 32, 41° 42 of each contact terminal member 300, 400.
placed between. The movable contacts 9.9 contact the fixed break contacts 41 and 42 when the current to the coil 3 is cut off, and are pressed against the insulator 6b of the armature 6 and contact the fixed make contacts 31 and 32 when the current is applied. . These operations can be controlled independently for each electromagnetic block 100, 200.

FIG. 3 is a circuit diagram of the electromagnetic relay described above.

As can be seen from the figure, the structure includes two movable contacts 9 that can each operate independently, and also integrates fixed make contacts 31, 32 and fixed break contacts 41, 42, which these movable contacts 9 connect and separate. It has become. Moreover, since the base 500 is commonly used, it is possible to downsize, save space, and reduce the number of parts.

In FIG. 1, 600 is a cover made of acrylic or the like, and is attached to the base 500 in a state that covers the above-mentioned structural parts.
The open end is glued to the Note that this cover 600 is not essential to the present invention, and the final product may be left uncovered as shown in FIG. 2 if necessary.

It should be noted that the present invention is not limited to the one embodiment described above, and it goes without saying that various modifications can be made without changing the gist. Moreover, the application is not limited to automobile electrical parts.

[Effects of the Invention] As explained above, according to the present invention, a fixed make contact is provided with two movable contacts that can each operate independently, and the movable contacts are brought into contact and separated.

By integrating the fixed break contacts, the electromagnetic relay is made more compact, and this i! Space saving and miniaturization of magnetic devices using electromagnetic relays can be achieved.

[Brief explanation of the drawing]

FIG. 1 is an exploded perspective view of an electromagnetic relay according to an embodiment of the present invention;
Fig. 2 is a perspective view showing the internal assembly state, Fig. 3 is a circuit diagram showing the configuration of circuit a, Fig. 4 is a circuit diagram showing a conventional example, and Fig. 5 is a drive for operating an electromagnetic relay. FIG. 3 is a waveform diagram of pulses and current flowing through the motor. 100: 1st) 71! 81 Block Zoo: Second electromagnetic block 300: Fixed make contact terminal member 400: Fixed break contact terminal member 500: Base l: Core 2 Nisbourg 3 Coil
4: External lead terminal 5: Yoke
6: Armature 6a: Window 6b = Insulator 7: Hinge spring 8: Movable contact spring member 9: Movable contact 10: Movable contact terminal

Claims (1)

[Scope of Claims] First and second electromagnetic blocks, a fixed make contact terminal member having two fixed make contacts, a fixed break contact terminal member having two fixed break contacts, and a flat electrical The first and second electromagnetic blocks each have a left-right symmetrical structure, and a coil with a core inside and wound around a spool, and a base made of an insulating material. a yoke mechanically and magnetically connected to one end; a hinge spring fixed to the yoke; movably supported by the hinge spring with the end of the yoke as a fulcrum, and facing the other end of the core; and a movable contact spring member having a movable contact and interlocking with the armature, the base fixing the first and second electromagnetic blocks side by side in a symmetrical posture in the longitudinal direction. An electromagnetic relay characterized in that the fixed make contact terminal member, the fixed break contact terminal member, and the movable contact spring member are fixed.