JPS62254332A - Relay - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a support structure for a fixed contact portion of a relay, such as a reed relay.

Conventional technology and its problems Conventionally, as a relay, for example, a movable contact portion of a movable contact piece is disposed between a pair of fixed contact portions that respectively protrude from a base and face each other, and an electromagnetic block provided on the base is energized or demagnetized. There is a method in which the movable contact piece is driven to bring the movable contact portion into contact with and away from the fixed contact portion.

However, in these methods, one end of each of the opposing fixed contact sections is a free end, so that the distance between the contacts of the opposing fixed contact sections tends to vary during the manufacturing process, and the operating characteristics tend to become non-uniform. Ta.

Moreover, since one end of each of the fixed contact sections is a free end, the distance between the contacts of the fixed contact section tends to change due to the contact/separation movement of the movable contact section, resulting in a problem that the operating characteristics tend to become unstable. was there.

Means for Solving the Problems In order to solve the above-mentioned problems, the present invention provides a method in which a movable contact portion of a movable contact piece is disposed between a pair of fixed contact portions that respectively protrude from a base and face each other, and is provided on the base. Driving the movable contact piece based on the excitation and demagnetization of the electromagnetic block,
In the relay for bringing the movable contact portion into contact with and separating from the fixed contact portion, the base may be integrally provided with a support that supports a tip portion of the fixed contact portion.

Operation and Effect Therefore, according to the present invention, one end of each of the opposing fixed contact portions is supported by the base, while the other end of each is supported by a support provided integrally with the base. Therefore, each of the fixed contact portions is supported at both ends.

Therefore, variations in the distance between the opposing fixed contact portions are less likely to occur during the manufacturing process, and the operating characteristics become uniform.

Furthermore, each fixed contact part is supported at both ends, improving structural strength, so even if the movable contact piece approaches and separates from the fixed contact piece, the distance between the contacts is difficult to change, resulting in stable operating characteristics. be.

EMBODIMENT OF THE INVENTION Hereinafter, one embodiment of the present invention will be described with reference to the accompanying drawings shown in FIGS. 1 to 6.

The reed relay according to this embodiment generally has a base l,
It consists of an electromagnet block IO, a contact mechanism section 20, an insulating cover 30, and a case 40.

The base 1 has a recess 2 in its center for storing the electromagnet block IO, and this recess 2 has a through hole 3 (in FIG. 1, the other three through holes are (not shown) is provided.

The electromagnetic block IO is a spool with flanges 15 and 16 on both ends! It is formed by winding a coil 13 around the body part 12 of the body part 12, and the extension part 17 provided in each of the collar parts 15 and 16.
Coil terminals 18a and 18b are press-fitted into a and 17b, respectively, and these coil terminals 18a and 18b
A lead wire from the coil 13 is soldered to the body part 12, and a center hole 14 is provided in the body part 12 through which a lead piece 21, which will be described later, can be inserted.

The electromagnet block 10 has two protrusions 15a provided at the lower ends of the flanges 15 and 16, respectively.

16a (the protrusion on the back side of the flange 15 is not shown) are respectively inserted into the through holes 3 provided in the recess 2 of the base l and made to protrude, and are thermally welded to define the base 11, J]. ing. At this time, the coil terminal 18a.

The lower end portions of 18b respectively protrude from the back surface of the base l.

The contact mechanism section 20 includes a lead piece 2I, a common terminal 23, contact terminals 25, 27, and a permanent magnet 29.

The lead piece 21 has a slit cut out in the length direction at one end thereof, and a movable contact portion 22 formed by metal plating is provided at the tip of the one end.

The reed piece 21 is inserted into the center hole 14 from the flange 15 side, and the protruding movable contact 22 is positioned between fixed contact parts 26 and 28, which will be described later, so as to be able to come into contact with and separate from it, while protruding from the flange 15. The other end thereof is fixed to a connecting portion 24 of a common terminal 23, which will be described later.

The common terminal 23 and contact terminals 25 and 27 are insert-molded along the same side of the base 1, and
The connecting portion 24 of the common terminal 23 protruding from the upper surface is bent so as to be parallel to the upper surface of the base l, and its tip is insert-molded into the columnar body 6 integrally molded to the base l. It is supported by

On the other hand, the contact terminals 25 and 27 protrude in parallel in the same direction from the sides of the columnar body 4 integrally molded on the base l,
The respective free ends are connected to the connecting portion 2 of the fixed terminal 23.
4, and are bent so as to face each other in the vertical direction to form a fixed contact portion 26°28. As described above, the fixed contact portions 26 and 28 are capable of coming into contact with and separating from the movable contact portion 22 of the lead piece 21 protruding from the collar portion 16, and their respective tip portions are integrated with the base l. It is insert-molded and supported by a molded columnar body 5 (support body).

Here, insert molding of the common terminal 23 and the contact terminals 25 and 27 to the base I will be explained.

First, a predetermined shape is punched out from a piece of strip material, and the protruding piece 26a of the fixed contact part 26 and the protruding piece 28 of the fixed contact part 28 are punched out.
A is bent, plated, and then the contact terminal 2
5.27, the fixed contact portions 26, 28, which are integral with the common terminal 23, and the connecting portion 24, which are integral with the common terminal 23, are bent to obtain a lead frame 50 (FIGS. 4 to 6).

Then, a distance gauge member (not shown) is sandwiched between the fixed contact parts 26 and 28, and in this state, the base l is insert molded, and the common terminal 23 and the contact terminals 25 and 27 are fixed (see Fig. 3). .

At this time, while the common terminal 23 is supported by insert molding on the columnar body 6 protruding from the distal end casement l of the connecting portion 24, the base portions of the fixed contact portions 26 and 28 are supported on the columnar body 4 protruding from the base 1. It is supported by insert molding, and its tip end is supported by the columnar body 5 protruding from the base 1 by insert molding.

Finally, connect each terminal 23, 25, 27 to the lead frame material 5.
Cut out from 0 and complete insert molding of base l.

According to this embodiment, the fixed contact portions 26 and 28 are insert-molded while holding the distance gauge member, so the dimensional accuracy of the distance between the contacts is high and variation is less likely to occur. Therefore, the operating characteristics of the relay are improved and made uniform.

In addition, since the connecting portion 24 and the fixed contact portions 26, 28 have a support structure at both ends, they are less likely to deform, have stable operating characteristics, and have the advantage of less deterioration over time.

A permanent magnet 29 is fixed to the fixed contact portion 26 to form a magnetic circuit.

The case 40 has a box shape and has an insulating cover 30 on its inner surface.
After being inserted and inscribed, it is fitted to the base l. Note that the base 1 into which the case 40 is fitted is sealed by injecting a sealing agent from the bottom surface thereof.

Next, the operation of this embodiment will be explained (see Figure 2).
.

In the case of non-excitation, the movable contact portion 22 of the reed piece 21 is attracted to the fixed contact portion 26, and a magnetic circuit is closed along the magnetic flux of the permanent magnet 29 shown by the dotted line.

Then, when the coil 13 is excited to generate a magnetic flux in the opposite direction to the magnetic flux of the permanent magnet 29, the movable contact portion 22 of the reed piece 21 is repelled by the fixed contact portion 26 and is attracted to the fixed contact portion 28. Therefore, the lead piece 21 rotates,
The movable contact portion 22 contacts the fixed contact portion 28 to close a magnetic circuit.

Furthermore, when the excitation of the coil I3 is released, the lead piece 21
returns to the non-excited state.

In addition, although the above-mentioned Example explained the case where it applied to a reed relay, it is not necessarily limited to this, and may be applied to other relays. Further, in the above-described embodiment, the case where the opposing fixed contact portions are parallel to the top surface of the base has been described, but this is not necessarily the case, and the case may be perpendicular to the top surface of the base. Of course.

[Brief explanation of drawings]

1 to 6 show an embodiment of the present invention,
FIG. 1 is an exploded perspective view, FIG. 2 is a side sectional view, and FIG. 3 is a front view of an insert-molded base. l...base, 5...column (support), lO...
- Electromagnet block, 21... Lead piece (movable contact piece), 22... Movable contact part, 26.28... Fixed contact part.

Claims (1)

[Claims] (1) A movable contact portion of a movable contact piece is disposed between a pair of opposing fixed contact portions that respectively protrude from a base, and the movable contact piece is driven based on excitation and demagnetization of an electromagnetic block provided on the base; A relay that causes the movable contact portion to approach and separate from the fixed contact portion, wherein a support body that supports a tip portion of the fixed contact portion is integrally provided on the base.