JPH0793090B2 - Electromagnetic relay - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an electromagnetic relay suitable for controlling automobile electrical components and the like that involve forward / reverse rotation of a motor and forward / reverse movement of a plunger.

[Prior Art] In recent years, the development viewpoint of automobiles has been toward the automation and upgrading of various on-board equipment. For example, automatic door locks, power windows, automatic seat belts, automatic sunroofs, automatic seat controls, retractable headlights. Various automotive electrical components such as controls have been developed.

The basic mechanism of these automotive electrical components is to rotate the armature of the motor forward and backward, and to operate the plunger of the solenoid forward and reverse. Generally, two electromagnetic relays as shown in FIG. 4 are used. It has a circuit configuration. In addition,
FIG. 5 is a waveform diagram of a drive pulse for operating the electromagnetic relay and a current flowing through the motor.

That is, when one of the electromagnetic relays A is driven by the drive pulse x, the current i flowing through the motor M causes an electric contact a _{1 of} the electromagnetic relay A and an electric contact b _{2 of the} electromagnetic relay B from the battery D.
Flow through, for example, in the forward direction. In addition, the electromagnetic relay A
Is released and the other electromagnetic relay B is driven by the drive pulse y, the electrical contact b _{1 of} the electromagnetic relay B, the electromagnetic relay A
The electric current i flows in the opposite direction to the above direction through the electric contact a _{2 of} . In this way, by driving either one of the electromagnetic relays A and B, the circuit configuration is such that the motor M is rotated in a desired direction.

[Problems to be Solved] As described above, the basic electric circuit of the conventional automotive electric component uses two electromagnetic relays because the electromagnetic relays can only perform simple operations of turning on and off. For this reason, the structure of the electric components of the vehicle becomes complicated, and high functionality,
There was a problem that space saving and miniaturization to meet the needs of diversification could not be achieved. This is true not only for automobile electrical components but also for various electric devices including a basic electric circuit that requires two electromagnetic relays as shown in FIG.

The present invention has been made in consideration of the above problems,
The purpose of the present invention is to provide an electromagnetic relay that has two movable contacts that can operate independently of each other, and integrates the fixed make contact and fixed break contact that move and separate these movable contacts to realize space saving and downsizing. .

[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 two fixed break contacts. Fixed break contact terminal member, mounting hole for inserting and fixing the external lead-out terminals of the first and second electromagnetic blocks, mounting hole for inserting and fixing external lead-out terminal of the fixed make contact terminal member, and the fixed break An electromagnetic relay provided with a mounting hole for inserting and fixing an external lead-out terminal of a contact terminal member, the electromagnetic relay having a base made of a flat plate-shaped electrical insulating material, wherein the first and second electromagnetic blocks are respectively A coil having an iron core inside and wound around a spool, a yoke mechanically and magnetically connected to one end of the iron core, a hinge spring fixed to the yoke, and a hinge spring supported by the hinge spring. An armature provided opposite to the other end of the iron core; and a movable contact spring integrally formed with the hinge spring that has a movable contact and is interlocked with the armature, and spools in the first and second electromagnetic blocks. Has
A support portion for supporting and fixing the fixed make contact terminal member and the fixed break contact terminal member is formed, and the first and second electromagnetic blocks are fixed such that the armatures face each other, and The make contact terminal member and the fixed break contact terminal member are fixed with their respective contacts facing each other, and the movable contact of the movable contact spring is located between these contacts.

[Embodiment] An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is an exploded perspective view of an electromagnetic relay according to this embodiment, and FIG.
Similarly, the figure is a perspective view showing an internal assembled state.

In the drawings, 100 is a first electromagnetic block and 200 is a second electromagnetic block. Each of these electromagnetic blocks 100,200
Have coils 3 each having an iron core 1 inside and wound around a spool 2. Both ends of the lead wire forming the coil 3 are connected to two external lead-out terminals 4 provided on the spool 2.

Further, a yoke 5 is provided near the side of the coil 3,
One end of the yoke 5 is mechanically and magnetically connected to one end of the iron core 1. An armature 6 is supported by a hinge spring 7 and faces the other end of the iron core 1. When the coil 3 is energized, the armature 6 is attracted to the magnetized core 1.

The hinge spring 7 is made of a conductive material, is formed in a substantially L shape or an arc shape, and is fixed to the yoke 5. A movable contact spring 8 has movable contacts 9 on both sides of the tip.
The base end is integrated with the hinge spring 7. That is, in this embodiment, the hinge spring 7 and the movable contact spring 8 are integrally formed. A movable contact terminal 10 is formed at the base end of the hinge spring 7 or the yoke 5.

Further, a support portion 21 for supporting a fixed make contact terminal member 300 and a fixed break contact terminal member 400, which will be described later, is provided at one end of the spool 2 in the first electromagnetic block 100.

The fixed make contact terminal member 300 is formed in a flat plate shape, is provided with two fixed make contacts 31, and has a base end bent in an L shape to form an external lead-out terminal 32. The fixed break contact terminal member 400 is also formed in a substantially flat plate shape, has two fixed break contacts 41, and has a configuration in which the base end is bent into an L shape to form the external lead-out terminal 42.

Further, the fixed make contact terminal member 300 and the fixed break contact terminal member 400 are provided with supported portions 33 and 43, and these supported portions 33 and 43 are connected to the first and second electromagnetic blocks 10.
It is designed to be inserted and fixed to the supporting portions 21 and 21 at 0,200.

Reference numeral 500 denotes a base, which is made of an electrically insulating material and fixes the base end portions of the first and second electromagnetic blocks 100, 200, the fixed make contact terminal member 300, and the fixed break contact terminal member 400 described above. That is, 51 and 52 are mounting holes for inserting and supporting the external lead-out terminals 4 of the electromagnetic blocks, respectively.
Reference numerals 3 and 54 are mounting holes for inserting and supporting the movable contact terminal 10 in the same manner. 55 and 56 are fixed make contact terminal members 3
00, each external lead terminal 33,4 of fixed break contact terminal member 400
Mounting holes for inserting and supporting the 3 respectively.

The first and second electromagnetic blocks 100, 200 are mounted on the base 500 with the armatures 6 facing each other. Further, the fixed make contact terminal member 300 has the supported portion 33 inserted into and fixed to the supporting portion 21 provided on the spool 2 of the first electromagnetic block 100, and the base end external lead-out terminal 32 is attached to the mounting hole of the base 500. Insert through 55 and fix. Similarly, in the fixed break contact terminal member 400, the supported portion 43 is inserted and fixed to the supporting portion 21 provided on the spool 2 of the first electromagnetic block 100, and the proximal external lead-out terminal 42 is attached to the base 500. Hole 56
Insert it through and fix it.

Each contact terminal member 300, 400 supported and fixed in this way
The contacts 31 and 41 of are placed at positions facing each other vertically. Then, the movable contacts 9, 9 of each electromagnetic block 100, 200
Is arranged between these contacts facing each other, and contacts the fixed break contact 41 when the current to the coil 3 is cut off, and moves with the armature 6 to contact the fixed make contact 31 when the current is applied. These operations are performed by each electromagnetic block 100,
Each 200 can be controlled independently.

FIG. 3 is a circuit diagram of the electromagnetic relay described above. As can be seen from the figure, a structure is provided in which two movable contacts 9 that can operate independently of each other are provided, and the fixed make contacts 31 and 32 and the fixed break contacts 41 and 41 that contact and separate the movable contacts 9 are integrated respectively. It has become. Moreover, the base 50
Since 0 is used in common, it is downsized, space saving,
And the number of parts can be reduced.

In FIG. 1, reference numeral 600 denotes a cover, which is made of acrylic or the like, and whose open end is bonded to the base 500 in a state of covering the above-mentioned structural portion. The cover 600 is not essential to the present invention, and may be left as it is as a final product as shown in FIG. 2 if necessary.

The present invention is not limited to the above-described embodiment, and various modifications and applications can be considered. Further, the application is not limited to automobile electrical components.

[Effects of the Invention] As described above, according to the present invention, two movable contacts that can operate independently of each other are provided, and a fixed make contact and a fixed break contact that move and separate these movable contacts are integrated to form an electromagnetic field. In addition to downsizing the relay, space saving of the electric device using this electromagnetic relay,
It can be miniaturized.

Further, at the time of assembly, it is sufficient to insert two pairs of fixed contact terminal members and two electromagnetic blocks in order from one direction, which is excellent in manufacturability and is suitable for an automatic manufacturing line.

Further, the fixed contact is fixed to the terminal member by a complex and highly accurate construction method by the base and the supporting portion, and the terminal member which is made rigid to some extent is used. It is possible to realize a relay with high positional accuracy and very small variation in contact contact force.

[Brief description of drawings]

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 an internal assembly state of the same, and FIG.
FIG. 4 is a circuit diagram showing the same circuit configuration, FIG. 4 is a circuit diagram showing a conventional example, and FIG. 5 is a waveform diagram of drive pulses for operating an electromagnetic relay and currents flowing in a motor. 100: First electromagnetic block 200: Second electromagnetic block 300: Fixed make contact terminal member 400: Fixed break contact terminal member 500: Base 1: Iron core, 2: Spool 3: Coil, 4: External lead terminal 5: Yoke , 6: Armature 7: Hinge spring, 8: Moving contact spring 9: Moving contact, 10: Moving contact terminal

Claims (1)

[Claims] 1. A first and second electromagnetic block (100, 200)
A fixed make contact terminal member (300) having two fixed make contacts (31), and two fixed break contacts (41)
Fixed break contact terminal member (400), and external lead terminals (4, 4) of the first and second electromagnetic blocks (100, 200).
4) Mounting holes (51, 52) for inserting and fixing, fixing holes (55) for fixing the external lead-out terminals (32) of the fixed make contact terminal member (300), and the fixed break contact terminal member. An electromagnetic relay comprising: a base made of a plate-like electrically insulating material, having a mounting hole (56) for inserting and fixing the external lead-out terminal (42) of (400), The electromagnetic blocks (100, 200) of the coil (3, 3) each having an iron core (1, 1) inside and wound around a spool (2, 2), and one end of the iron core (1, 1) Magnetically connected yoke (5,5) and this yoke (5,5)
A hinge spring (7,7) fixed to the armature, and an armature (6,6) supported by the hinge spring (7,7) and provided to face the other end of the iron core (1,1), A movable contact spring (8, 8) integrally formed with the hinge spring (7, 7) having a movable contact (9, 9) and interlocking with the armature (6, 6); The spool (2, 2) of the second electromagnetic block (100, 200) has the fixed make contact terminal member (30
0) and a fixed break contact terminal member (400) to support and fix the fixed break contact terminal member (400), and the first and second electromagnetic blocks (100, 200),
The armatures (6, 6) are fixed so as to face each other, and the fixed make contact terminal member (300) and the fixed break contact terminal member (400) have their respective contacts (31, 41) faced to each other. An electromagnetic relay characterized in that the movable contact (9, 9) of the movable contact spring (8, 8) is positioned between these contact points (31, 41).