JPS63307634A - Solenoid relay - Google Patents

Abstract

PURPOSE:To enhance the insulating performance between a common terminal and a coil terminal by connecting a relay terminal protruding at flanges electrically with the lead of a coil, and connecting this relay terminal electrically with relay arms extending sideways from the coil terminal. CONSTITUTION:An electric magnet 5 formed by winding a coil 51 on a spool 52 having flanges 55, 56 is fixed to the top surface of a base 1, and this coil 51 is connected electrically with coil terminals 3, 4 furnished at the base 1. The lead of the coil 51 is connected electrically with a relay terminal 58 protruding at the flanges 55, 56, and this relay terminal 58 is connected electrically with relay arms 32, 42 extending sideways from the coil terminals 3, 4. Therefore, the coil terminals 3, 4 can be protruded down from the base in any desired position by selecting the length of relay arms 32, 42 properly. Thus the coil terminals 3, 4 and other terminals can be separated at an appropriate distance to lead to enhancement of the insulating performance.

Description

[Detailed description of the invention] Industrial applications The present invention relates to an electromagnetic relay.

Prior Art and Its Four Problems Conventionally, as an electromagnetic relay, there is, for example, one in which an electromagnetic portion is arranged and fixed in parallel on the upper surface of a base.

The electromagnet part is constructed by winding a coil around a spool having flanges at both ends, placing a yoke having a cross-sectional shape on the spool, and then inserting an iron core into the body of the spool, and inserting a protruding iron core into the body of the spool. The spool and the yoke are integrated by fitting one end of the core into a through hole provided in the vertical portion of the yoke and fixing the one end of the iron core by caulking.

Further, a movable iron piece is rotatably supported at the horizontal tip of the yoke via a movable contact piece, and a free end of the movable contact piece protruding from the tip of the movable iron piece is movable. A contact point is provided. This movable contact is then press-fitted into the base.

Arranged so that it can be connected to and separated from the fixed contact of the fixed fixed contact terminal,
It constitutes a contact mechanism. Further, a common terminal protruding from the lower surface of the base is fixed to the vertical portion of the yoke by caulking.

On the other hand, a coil terminal projecting downward is insert-molded at the lower end of the flange portion, which the vertical portion of the yoke comes into contact with. After the coil terminal is tied to the lead wire of the coil and soldered, the coil terminal is press-fitted and fixed into the through hole of the base, and protrudes from the lower surface of the base.

However, in this case, the common terminal provided on the vertical part of the yoke and the coil terminal protruding downward from the flange of the spool protrude from the bottom surface of the base in close proximity to each other. The problem was that the insulation was low.

Means for Solving the Problems In order to solve the above-mentioned problems, the present invention fixes an electromagnet section, which is formed by winding a coil around a spool having a flange, to the upper surface of a base, and also fixes an electromagnet section to the upper surface of a base. In an electromagnetic relay in which the coil is electrically connected to a terminal, a lead wire of the coil is electrically connected to a relay terminal protruding from the flange, and the relay terminal is connected to a relay arm extending laterally from the coil terminal. This is an electrically connected configuration.

Actions and Effects Therefore, according to the present invention, by appropriately selecting the length of the relay arm, the coil terminal can be made to protrude downward from an arbitrary position on the base.

For this reason, the coil terminal and other terminals can be separated by an appropriate distance, resulting in the effect of high insulation.

Kanno N Hereinafter, one embodiment of the present invention will be described with reference to the accompanying drawings of FIGS. 1 to 4.

The electromagnetic relay according to this embodiment is roughly composed of a base 1, a contact mechanism section 2, a coil terminal 3.4, an electromagnet section 5, and a movable iron piece 6.

The base l has a planar substantially rectangular plate shape, and is provided with a through hole 11 approximately in the center thereof, and has a planar road-shaped shape near one edge facing the through hole 11 in between. A through hole 12 is provided, and a through hole 13 is provided near the other edge.

Plus, the base! Through holes 14.15 and 16.17, into which the coil terminals 3 and 4 are press-fitted and fixed, are provided at opposite edges along the longitudinal direction.

The contact mechanism section 2 includes a normally closed fixed contact terminal 21, a normally open fixed contact terminal 22, and a movable contact piece 23.

The normally closed fixed contact terminal 21 and the normally open fixed contact terminal 22 are
It is press-fitted and fixed into the through holes 12 and 11 provided in the base l, respectively, and the normally closed fixed contact 21a and the normally open fixed contact 22m are opposed to each other at a predetermined interval. Furthermore, the normally-closed fixed contact terminal 21 is provided with a position regulating portion 2tb4 located approximately on the same plane as the tip end surface of the fixed contact 21a by bending its upper end in the protruding direction of the fixed contact 21a.

The movable contact piece 23 is caulked and fixed to a yoke 54, which will be described later, and is provided with a movable contact 23a at its free end, and this movable contact 23a is arranged so as to be able to approach and separate from the normally open fixed contact 21a and the normally open fixed contact 22a. Shidaru (2nd ryA)
.

The coil terminal 3 has a claw portion 31 extending upward and a relay arm portion 32 extending laterally, and protrudes downward from a terminal portion 33 extending downward and the relay arm portion 32. The caulking portions 34 are press-fitted into the through holes 14 and 15 provided in the base 1, respectively, and then the caulking portions 34 are caulked to be fixed to the base 1.

On the other hand, the coil terminal 4 has a shape symmetrical to the coil terminal 3, and after the terminal portion 43 and the caulking portion 44 are press-fitted into the through holes 16 and 17 provided in the base l, the caulking portion 44 is inserted. It is fixed to the base l by caulking.

In addition, 35.45 is the relay arm portion 32 of the coil terminal 3.4.
, 42 which protrudes upward.

In the electromagnet part 5, an iron core 53 having a substantially T-shaped cross section is inserted into the body of a spool 52 around which a coil 51 is wound, and a protruding rear end 53b is inserted into a through hole 54a of a yoke 54 having a cross-sectional shape. After fitting, the rear end portion 53b is caulked to be integrated.

The spool 52 has flanges 55 and 56 at both ends, a frame 57 is integrally formed on the outer surface of one of the flanges 55, and a pair of relays protrudes downward at the lower end of the other flanges 56. The terminals 58.58 are insert molded. moreover,
A pair of guide grooves 57a are provided on both outer surfaces of the frame portion 57.
, 57b are provided, and the lead wires of the coil 51 are respectively tied to and soldered to the relay terminals 58 and 58.

The yoke 54 has a surface plated with a precious metal (for example,
The movable contact piece has a common terminal 54b fixed to its vertical part by caulking and protrudes downward, and its horizontal part is bent to have a cross-sectional shape. One end of 23 is fixed by caulking.

The movable contact piece 23 is provided with a movable contact 23a at its free end, and has a movable iron piece 6 fixed to its intermediate part by caulking. Therefore, the movable iron piece 6 is attached to the yoke 54.
It rotates about the horizontal tip of the iron core 53 as a fulcrum and can move toward and away from the magnetic pole portion 53a of the iron core 53.

In this embodiment, since the entire surface of the yoke 54 is plated with precious metal, the conductivity of the yoke 54 is improved and the yoke 54 is plated with a precious metal.
4 is less likely to generate heat. Therefore, since organic gas is less likely to be generated from the spool 52 and the like that are in contact with the yoke 54, there is an advantage that poor contact due to corrosion of the contact points caused by the organic gas is less likely to occur.

Note that noble metal plating may be applied to the surface of the movable iron piece 6. Also, yoke 54. It is not necessary to plate the entire surface of the movable iron piece 6 with noble metal; for example, only the contact portion between the yoke 54 and the movable contact piece 23 may be plated with noble metal.

Therefore, the electromagnet part 5 having the above structure is positioned above the base 1, the common terminal 54b is press-fitted into the through hole 13 of the base l, and the guide grooves 57a and 57b provided in the frame part 57 are connected to the coil terminal. 3.4 claw part 31
, 41 and are assembled, the movable contact piece 23
The movable contact 23a is located between the normally closed fixed contact 21a and the normally open fixed contact 22a so as to be able to approach and separate, and the relay terminal 58° 58 is located near the tips of the relay arms 32, 42. .

Further, the position regulating portion 21b located at the upper end of the normally closed fixed contact terminal 21 can come into contact with the lower end of the movable iron piece 6. Therefore, even if impact force is applied from the outside, the movable iron piece 6
Since the lower end portion of the movable iron piece 6 contacts the position regulating portion 21b, there is an advantage that the movable iron piece 6 does not swing too much and the movable contact piece 23 does not bend.

Further, as shown in FIG. 4, since the terminal portion 33.43 of the coil terminal 3.4 projects apart from the common terminal 54b, the insulation between the terminal portion 33.43 and the common terminal 54b is high, and Since the normally open fixed terminal 22 protrudes downward from the center of the base l and is separated from the normally closed fixed contact terminal 21 and the terminal portions 33 and 43 of the coil terminal 3.4, the normally open fixed contact terminal 21 and other High insulation with terminals.

As a result, there is an advantage that the insulation of the entire device is high.

Then, by caulking the claws 31, 41 of the coil terminal 3.4 inward and soldering the relay terminals 58, 58 to the relay arms 32, 42 of the coil terminal 3.4, the base l is connected. The electromagnet part 5 is integrated (first
), then a substantially box-shaped case (not shown) is fitted to the base l, and the assembly work is completed.

In addition, if necessary, the connecting portion 35.4 of the coil terminals 3, 4
5 may be connected to a resistor or the like.

In the electromagnetic relay configured as described above, when not energized, the movable contact 23a is urged outward by the spring force of the movable contact piece 23, and is closed to the normally closed fixed contact 21a.

Next, when the coil 51 is excited, the movable iron piece 6 moves to the iron core 53.
The movable iron piece 6 rotates against the spring force of the movable contact piece 23, and the movable contact 23a switches from the normally closed fixed contact 21a to the normally open fixed contact 22a.

And 1. When the excitation is released, the spring force of the movable contact piece 23 returns it to its original state.

In addition, in the above-mentioned embodiment, a case was explained in which the electromagnet part is fixed to the base by caulking the straight claws of two coil terminals, but this is not necessarily the case. Alternatively, one side of the electromagnet part may be engaged with a claw part protruding from the base, and
The electromagnet part may be fixed to the base by locking the other side with a claw part formed by caulking a part of the terminal.

Furthermore, after placing the electromagnet on the base, you can not only fix the electromagnet to the base by caulking the straight claws of the coil terminal, but also bend the claws of the terminal in advance and deform the claws elastically. Alternatively, the electromagnet part may be press-fitted into the base, and the electromagnet part may be fixed to the base by the spring force of the elastically restored claw part.

Further, the terminal is not limited to one that is press-fitted and fixed to the base, but it goes without saying that it may be insert-molded on the base.

[Brief explanation of the drawing]

1 to 4 show an embodiment of the present invention,
1 is an overall perspective view, FIG. 2 is a cross-sectional view taken along the line ■--■ in FIG. 1, FIG. 3 is an exploded perspective view, and FIG. 4 is a bottom view. DESCRIPTION OF SYMBOLS 1... Base, 3.4... Coil terminal, 5... Electromagnet part, 51... Coil, 52... Spool, 55
．． 56... Flange portion, 58. 58... Relay terminal, 32.
42... Relay arm patent Applicant: Tateishi Electric Co., Ltd. Agent
Patent Attorneys Aohaku, Bō, and 2 others 2nd (!I Figure 4)

Claims (1)

[Claims] (1) In an electromagnetic relay in which an electromagnet formed by winding a coil around a spool having a flange is fixed to the upper surface of a base, and the coil is electrically connected to a coil terminal provided on the base, the electromagnet protrudes from the flange. An electromagnetic relay characterized in that a lead wire of the coil is electrically connected to a relay terminal that is connected to the coil terminal, and the relay terminal is electrically connected to a relay arm that extends laterally from the coil terminal.