JPH0785382B2 - Electromagnetic relay - Google Patents

Description

TECHNICAL FIELD The present invention relates to a multi-pole type electromagnetic relay including two sets of relay units.

(Prior Art) Conventionally, there is an electromagnet device including a coil device in which a coil is wound around a cylindrical spool body having flanges at both ends, and an iron core inserted into the spool body, and an electric current is supplied to the coil. Is applied to excite and demagnetize the iron core to operate the movable part and to provide two sets of relay units that open and close contacts, and each relay unit is independently driven to turn on two contact mechanisms.
An off-controlled type is proposed in Japanese Patent Laid-Open No. 56-134435.

Then, in this one, a wide terminal block is applied to the upper surfaces of the flanges of the two coil devices arranged side by side, and the iron cores are inserted into the spool bodies of the coil devices through the iron core insertion holes of the terminal blocks.
The lower end protruding portion is caulked to the yoke so that the two relay units are integrally fixed in the vertical direction.

(Problems to be Solved by the Invention) However, the core insertion portion of the spool body is formed to be slightly larger than the outer diameter of the core in consideration of the insertability of the core.

For this reason, the coil device laterally moves by the gap, and the withstand voltage characteristic changes due to the change in the distance between the coil devices, which makes it impossible to maintain the normal operating characteristics of the relay unit. Was there.

(Means for Solving Problems) The present invention has been made to solve the above problems,
An electromagnet device including a coil device in which a coil is wound around a tubular spool body having flanges at both ends and an iron core inserted in the spool body is provided, and an electric current is applied to the coil to excite the iron core. In an electromagnetic relay in which two sets of relay units are arranged side by side to demagnetize and operate a movable part to open and close contacts, a coil device mounting part is formed on a spool collar part of a coil device in the one relay unit, and the coil device mounting part is formed. Attach the coil device of the other relay unit to the attachment part,
The coil device of two relay units is combined and integrated.

(Example) Hereinafter, the present invention will be described with reference to the accompanying drawings showing an example.

FIG. 1 is an exploded perspective view of an electromagnetic relay according to the present invention, and an electronic relay is roughly composed of a coil device part 1, a terminal block 2, a fixed terminal part 3, a yoke part 4, an iron core part 5, and a movable part 6. Is.

The coil device unit 1 is composed of two coil devices 10a and 10b. The one coil device 10a has flange portions 11a and 12a at both ends of a cylindrical spool body 13a, and the body 13a
The coil 14a is wound around the coil 14a and both ends thereof are connected to the coil terminals 19a, 19a attached to the lower collar portion 11a.

Further, one side of the flange portions 11a, 12a is extended laterally, and the opposite surfaces of the extension portions are respectively provided with another coil device 10b.
Grooves 15a, 17a having a convex cross-section, which are mounting portions, are formed.

Another coil device 10b is one in which the coil 14b is wound between the collar portions 11b, 12b at both ends of the spool body 13b, and both ends thereof are connected to the coil terminals 19b, 19b attached to the lower collar portion 11b. The collar portions 11b and 12b are respectively the coil device 10a.
The groove portions 15a and 17a can be fitted by being slid from the front and fitted.

The extension portions of the collar portions 11a, 12a are formed with insertion holes 16b, 18b facing each other in the vertical direction.
When 0b is attached to the groove portions 15a and 17a, the insertion holes 16b and 18b communicate with the cylindrical spool body 13b.

The terminal block 2 is formed to have substantially the same size as the spool collar portion 12a of the coil device 10a, and the iron core insertion hole 24a,
24b is formed, and pedestals 21a and 21b are formed on both sides of the front part of the upper surface. And the base 21a
Has terminal grooves 22a and 23a, and the base portion 21b has terminal grooves 22b and 23b.
The terminal grooves 22a and 22b and 23a and 23b are formed on the same plane.

The fixed terminal portion 3 is a normally open fixed terminal 31a formed in an inverted L shape.
And a normally closed fixed terminal 31b.
In 2b, normally open fixed contacts 34a, 35a and normally closed fixed contacts 34b, 35b are provided at the same interval.

The yoke portion 4 is composed of yokes 41a and 41b formed in an L shape, and iron core fixing holes 43a and 43b are formed in the horizontal portions 42a and 42b, respectively.

The vertical parts 44a and 44b have movable part mounting holes 45a and 45b, respectively.
Is formed.

The iron core portion 5 is composed of iron cores 51a and 51b, and upper ends thereof are magnetic pole surfaces 52a and 52b.
And the lower parts are fixed parts 53a and 53b.

The movable part 6 includes movable iron pieces 67a and 67b, respectively, and has an inverted L-shape.
It consists of spring-like movable contact pieces 61a, 61b formed in a letter shape,
The movable iron pieces 67a, 67b have the protrusions 68a, 68b and the movable contact pieces 61a, 61b.
The horizontal portions 62a and 62b are each caulked and integrated.

Movable contacts 63a and 63b are provided at the tips of the horizontal portions 62a and 62b of the movable contact pieces 61a and 61b, and holes 66a and 66b are formed in the vertical portions 64a and 64b, and part of the movable contact pieces 61a and 62b To extend as the common terminals 65a and 65b.

The electromagnetic relay having the above-described configuration is the groove portion 1 of the coil device 10a.
5a, 17a, the spool collar portion 11 of the other coil device 10b
The coil devices 10a and 10b are integrated by sliding and fitting the b and 12b from the front.

As a result, the relative positional relationship between the coil devices 10a and 10b is fixed, and the distance between the coils 14a and 14b is regulated to be constant.

Next, the terminal block 2 is placed on the spool collar portion 12a of the coil device 10a, and the iron core 51a is attached to the iron core insertion hole 24a and the spool body 13a.
The core 51a and the core core insertion hole 24b,
18b, the spool body 13b, and the insertion hole 16b.

Then, the fixed portions 53a and 53b at the tips are fitted into the fixing holes 43a and 43b of the yokes 41a and 41b, which are applied to the lower surface of the spool collar portion 11a, and are caulked to make the terminal block 2, the coil device portion 1, and the yoke portion 4 Is fixed integrally.

Next, the normally open fixed terminal 31a and the normally closed fixed terminal 31b are
Horizontal portions 32 are respectively formed in the terminal grooves 22a, 22b and 23a, 23b of 21a, 21b.
Fix both ends of a and 32b by press-fitting and fix them to the fixed contacts 34a and 34b, 3
Make 5a and 35b face each other vertically (see Fig. 2).

In addition, the movable part 6 includes the vertical parts 64a, 6 of the movable contact pieces 61a, 61b.
4b is located on the back surface of the yokes 41a, 41b, and is integrally fixed to the holes 66a, 66b and the movable part mounting holes 45a, 45b via screws or the like.

At this time, the movable contacts 63a, 63b are respectively located between the fixed contacts 34a, 34b and 35a, 35b, and the upper normally open fixed contacts 34b, 35b are provided by the springiness of the movable contact pieces 61a, 61b.
Is pressed against (see Fig. 2).

The movable iron pieces 67a, 67b face the magnetic pole surfaces 52a, 52b of the iron cores 51a, 51b, respectively.

In this way, the coil device unit 1, the terminal block 2, the fixed terminal unit 3, the yoke unit 4, the iron core unit 5, and the movable unit 6 are assembled and 2
A pair of relay units Ra and Rb are integrally configured.

That is, in the relay unit Ra, the coil terminals 19a, 19
When a current is applied to the coil 14a via a, the movable iron piece 67a is attracted to the magnetic pole surface 52a by exciting the iron core 51a, the movable contact 63a is separated from the normally closed fixed contact 34b, and the normally open fixed contact 34a. Contact with.

As a result, the circuit connecting the normally open fixed terminal 31a and the common terminal 65a is closed.

Conversely, when the coil 14a is de-energized and the iron core 51a is demagnetized, the movable contact 63a returns upward due to the spring property of the movable contact piece 61a to contact the normally closed fixed contact 34b, and the normally closed fixed terminal 31b. The circuit connecting the common terminal 65a and the common terminal 65a is closed.

The operation of the other relay unit Rb is also the same as that of the relay unit Ra, and the description thereof will be omitted.

In the above-mentioned operation, the coil device 10b has the upper and lower collar portions 1
2a, 11a are integrally fixed to the extended coil device 10a, so that the relative positional relationship between the two does not occur, and the distance between the coils 14a and 14b is always kept constant. There is.

Therefore, even when it is used in a device that generates vibration, the operating characteristics of the electromagnetic relay do not change.

Although the terminal block 2 is separately formed in the above embodiment, the present invention is not limited to this. As shown in FIG. 2, the spool collar portion 12a of the coil device 10a serves as a terminal block, and the terminal is placed there. The base 21a having the grooves 22a and 23a and the base 21b having the terminal grooves 22b and 23b may be formed, respectively.

By doing so, the number of parts can be reduced accordingly, and the cost can be reduced.

Further, in the above embodiment, the vertical portions 33a and 33b of the normally open fixed terminal 31a and the normally closed fixed terminal 31b are attached so as to be located on both sides of the electromagnetic relay, but the present invention is not limited to this and is shown in FIG. Thus, the electromagnetic relays may be collected on one side.

Further, in the above embodiment, the upper and lower collar portions 12 of the coil device 10a are
Although the groove portions 17a and 15a are formed in the facing portions of a and 11a, respectively, and the coil device 10b is attached to and integrated with the groove portions, the means for integrating the two is not limited to this.

(Effects of the Invention) As is apparent from the above description, in the electromagnetic relay according to the present invention, one coil device is integrally mounted with the other coil device, and the relative positional relationship between the two coil devices is changed vertically and horizontally. I try not to.

Therefore, the distance between the coils does not change and is always constant, and the electromagnetic relay can maintain constant operating characteristics and can be used stably.

[Brief description of drawings]

1 is an exploded perspective view of an electromagnetic relay according to the present invention, FIG.
The drawing is a front view showing another embodiment. Ra, Rb: Relay unit, 1 ... Coil device, 2 ... Terminal block, 3 ... Fixed terminal, 4 ... Yoke, 5 ... Iron core, 6 ... Movable part, 10a, 10b ... … Coil device, 11a, 11b, 12a, 12b …… Spool collar part, 13a, 13b …… Spool body, 14a, 14b …… Coil, 15a, 17a …… Groove part, 21a, 21b …… Base part, 31a …… Normally open fixed terminal, 31b ...... Normally closed fixed terminal, 34a, 35a ...... Normally open fixed contact, 34b, 35b ...... Normally closed fixed contact, 61a, 61b ...... Movable contact piece, 63a, 63b ...... Movable contact.

Claims (1)

[Claims] 1. An electromagnet device comprising a coil device in which a coil is wound around a cylindrical spool body having flanges at both ends, and an iron core inserted in the spool body, and an electric current is applied to the coil. Then, in the electromagnetic relay in which two sets of relay units are installed side by side to excite and demagnetize the iron core to operate the movable part and open and close the contacts, the coil device mounting part is formed on the spool collar part of the coil device in the one relay unit. Then
An electromagnetic relay in which the coil device of the other relay unit is mounted on the coil device mounting portion, and the coil devices of the two relay units are combined and integrated.