JPH0869739A - Relay - Google Patents

Abstract

PURPOSE: To stabilize the working characteristics of a relay by sealing the root of one end of a lead-out terminal with a liquid resin while it is placed with the outside of its base facing up, and thereby hindering the liquid resin from reaching a supporting piece furnished on the inside of the base. CONSTITUTION: In the condition that a relay is placed with the outside of its base facing up, the root of one end of a common terminal (lead-out terminal) 51 is sealed with a liquid resin. The liquid resin flows on the terminal 51 and is going to pass through a gap 1d formed between the common terminal 51 and the side wall 1c of the base 1 located on the other side of a supporting piece 1b, where the gap 1d is blocked by a blocking piece 51a furnished on the common terminal 51 when viewed from the outside the base 1. Therefore, the resin does not reach the supporting piece 1b on the blocking piece 51a. Naturally the resin does not either reach a hinge spring 4 secured to the supporting piece 1b, so that the spring constant of the spring force generation part 4b for swinging an armature block 3 remains unchanged, and the working characteristics of the relay can be stabilized.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a relay in which an armature block is swingably supported by a hinge spring piece fixed to a base.

[0002]

2. Description of the Related Art As this type of relay, there is one having a structure shown in FIGS. This product has a base A with a fixed contact A ₁ and a base A with a coil wound around an iron core B _1.
An electromagnet B mounted on the armature block C of the movable spring C ₁ is integrally fixed to the armature C ₂ having a movable contact that contact and separation with the fixed contact A _1, the distal end portion D ₁ is base A a hinge spring piece D for swingably hinged supporting the armature block C is secured to one surface of the support piece a ₂ provided on the inner side of the support piece a ₂
Gap A ₄ between the side walls A ₃ of the base A located on the other surface side of the
The lead-out terminal E whose one end E ₁ is led out to the outside of the base A and the base A along the outer end surface of the support piece A and the outer side surface of the lead-out terminal E. A case F which is fitted from the inner side of, and a liquid resin which seals the root of the one end E ₁ of the lead-out terminal E on the outer side of the base A,
It is configured with.

More specifically, the hinge spring piece D is shown in FIG.
As shown by the two-dot chain line in Fig.
When the upper electrode descends from one end surface side of the support piece A ₂ while being inserted into the gap A ₄ provided between the support piece A ₂ and the side wall A _{3 of the} base A and receiving the other surface side of the support piece A ₂ . The tip portion D ₁ is welded and fixed to one surface of the support piece A ₂ . At this time, the spring force generating portion D ₂ of the hinge spring piece D described later is in a state of being adjacent to the outer end surface of the support piece A ₂ located on the inner wall side of the case F, as shown in FIG.

The hinge spring piece D is extended from the movable spring C ₁ of the armature block C, and the supporting piece A ₂ is the base A.
Is connected to the lead-out terminal E inside the
C ₁ is connected to the lead-out terminal E via the hinge spring piece D, and the armature block C is connected to the supporting piece A _{2 of the} hinge spring piece D _2.
Spring force generating part which is the part excluding the tip part 4a fixed to the
While being restored by the spring force of D _{2, the} hinge spring piece D swingably supports the hinge.

After the case F has been fitted from the inside of the base A, the case A is placed with the outside of the base A facing upward, and the outside of the base A is separated from the case F. A liquid resin such as epoxy is applied to the base of the lead-out terminal E 1 led out from the fitting gap and sealed to form a sealed structure.

[0006]

In the conventional relay described above, the outer side of the base A is placed with the outer side of the base A facing upward in order to form a sealed structure. When a liquid resin such as epoxy is applied to the base of the lead-out terminal E drawn from the fitting gap between the case and the case F, the liquid resin becomes
A base located on the other side of the lead-out terminal E and the support piece A ₂ so that the lower electrode for welding can be inserted after it has passed through the lead-out terminal E.
Through the gap A ₄ provided between the side wall A _{3 of} A and the side wall A ₃ , the outer end surface of the support piece A ₂ to which the hinge spring piece D is welded and fixed is reached as shown by an outline arrow in FIG. 7. However, since the spring force generating portion D ₂ is disposed adjacent to the outer end surface of the supporting piece A ₂ of the hinge spring piece D, the liquid resin has a restoring force when the armature block C swings. supposed to flow into the spring force generator D ₂ to impart the spring constant of the spring force generating portion D ₂ is changed,
The swing of armature block C may also change and the operating characteristics of the relay may become unstable.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a relay capable of further stabilizing operating characteristics.

[0008]

In order to solve the above-mentioned problems, according to a first aspect of the present invention, a base provided with a fixed contact, an electromagnet having a coil wound around an iron core and attached to the base, An armature block in which a movable spring, which has a movable contact to and from a fixed contact, is integrally fixed to an armature, and an armature, whose tip is fixed to one surface of a support piece provided on the inner side of the base. A hinge spring piece that swingably supports the block is arranged along a side wall of the base located on the other surface side of the support piece with a gap, and one end of the hinge spring piece is located outside the base. In a relay provided with a lead-out terminal led out to the side, and a liquid resin that seals one end root of the lead-out terminal on the outer side of the base, the lead-out terminal is the one seen from the outside of the base. A blocking piece is provided to close the gap between the base and the side wall. Were are the configuration.

According to a second aspect of the present invention, in the first aspect, the engaging groove with which the blocking piece engages is provided in the side wall of the base.

According to a third aspect of the present invention, there is provided a movable spring having a base provided with a fixed contact, an electromagnet having a coil wound around an iron core and mounted on the base, and a movable contact brought into contact with and separated from the fixed contact. An armature block integrally fixed to the armature, and a hinge spring piece having a tip end fixed to one surface of a support piece provided on the inner side of the base to hingeably support the armature block. , A lead-out terminal which is disposed along the side wall of the base located on the other surface side of the support piece and whose one end is led out to the outside of the base, and an outer end surface of the support piece and an outer surface of the lead-out terminal. A hinge provided along the inner side of the base, and a liquid resin that seals the root of one end of the lead-out terminal on the outer side of the base, wherein the hinge spring piece is the armature. Generates spring force related to block swing Notches to avoid far the spring force generation unit from the outer end face of the base of the support piece are a configuration provided.

[0011]

According to the first aspect of the present invention, when the base of one end of the lead-out terminal is sealed with the liquid resin in a state where the base is placed with the outer side thereof facing upward, the liquid resin propagates through the lead-out terminal. After that, it tries to go through the gap provided between the lead-out terminal and the side wall of the base located on the other surface side of the support piece, but the gap is provided in the lead-out terminal when viewed from the outside of the base. Since it is blocked by the blocking piece, it is blocked by the blocking piece and does not reach the support piece provided on the inner side of the base, and of course the hinge spring piece fixed to the support piece does not reach.

According to another aspect of the present invention, the closing piece provided on the lead-out terminal closes a gap provided between the lead-out terminal and the side wall of the base located on the other surface side of the support piece. For example, when abutting against the side wall of the base, a slight gap may be generated in the abutting portion and the liquid resin may enter through the gap, whereas in the present invention, it is provided on the side wall of the base. Since the gap is closed by engaging with the engaging groove, the liquid resin cannot pass over the closing piece unless it goes around the engaging groove, so it is more reliable to reach the hinge spring piece. Can be stopped.

According to the third aspect of the present invention, even if the liquid resin reaches the supporting piece through the lead-out terminal and the case, the hinge is kept away from the outer end surface of the supporting piece by the notch. It does not reach the spring force generating part of the spring piece.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to FIGS.

Reference numeral 1 denotes a base, which is formed into a rectangular parallelepiped by integrally molding an electromagnet 2 and each lead-out terminal with synthetic resin as will be described later, and fixed contacts 1a are provided at four corners on the inner side thereof. .

Reference numeral 2 is an electromagnet, and a coil is wound around an iron core 2a formed of a magnetic material in a substantially U shape with both leg pieces as magnetic pole portions, and both ends of the iron core 2a have the same polarity. A permanent magnet whose central part is magnetized with different polarities is arranged. The electromagnet 2 is mounted on the base 1 by exposing both legs of the iron core 2a so as to be integrally molded.

Reference numeral 3 denotes an armature block, which is provided with an armature 3a formed of a magnetic material in the shape of a substantially rectangular flat plate, and movable contacts contacting and separating from the fixed contact 1a at both ends, and a thin leaf spring material such as a copper alloy. And a movable spring 3b that is formed in a long shape and has its central portion integrally fixedly supported by an insulator 3c and provided on both sides of the armature 3a.

Reference numeral 4 denotes a hinge spring piece, which extends from a substantially central portion of the movable spring 3b, bends in a crank shape in the middle and meanders, and then reaches a tip portion 4a on the same plane as the movable spring 3b. . This tip portion 4a is fixed by welding to one surface of a flat plate-like support piece 1b provided at the center of both sides in the longitudinal direction on the inner side of the base 1 by welding so as to swingably support the armature block 3 with a hinge. . That is, when the armature block 3 is swung like a seesaw with the hinge spring piece 4 hingedly supporting the support piece 1b at the substantially central portion, the hinge spring piece 4 is
Twist occurs in the portion excluding the tip portion 4a fixed to the support piece 1b, and the restoring force is given by the spring force. That is, this portion serves as a spring force generating portion 4b for swinging the armature block 3.

Reference numeral 5 denotes a lead-out terminal, which is composed of a common terminal 51 connected to the support piece 1b, a fixed terminal 52 connected to the fixed contact 1a, and a coil terminal 53 connected to a coil, and is integrally formed on the base 1 together with the electromagnet 2. Then, each terminal is extended on both sides of the base 1 in the longitudinal direction.
To the outside.

More specifically, the common terminal 51 is connected to the support piece 1b at the other end side inside the base 1 and is connected to the base 1 with one end side extending toward the side of the base 1. The hinge spring piece 4 is integrally formed, and the tip 4a of the hinge spring piece 4 is welded and fixed to the support piece 1b, and then bent at a right angle to the outside of the base 1.
At this time, the common terminal 51 is arranged so as to have a gap 1d between it and the side wall 1c of the base 1 located on the other surface side of the support piece 1b, and is viewed from the outside of the base 1. A blocking piece 51a that closes the gap 1d is bent and formed.

That is, first, the hinge spring piece 4 is shown in FIG.
As shown by the chain double-dashed line in FIG. 1, the lower electrode for welding is inserted into the gap 1d and receives the other surface side of the supporting piece 1b,
By lowering the upper electrode from the one end face side, the tip 4a of the upper electrode is welded and fixed to one face of the support piece 1b. Then
After removing the lower electrode from the gap 1d, bending the common terminal 51, which is extended toward the side of the base 1, at a right angle,
As shown in FIG. 3, the closing piece 51a of the common terminal 51 has its tip end engaged with the engaging groove 1e provided in the side wall 1c of the base 1 so that the outer side of the base 1, that is, the lower side in the figure. Seen from above, the gap 1d is closed.

Reference numeral 6 denotes a case, which is formed of a synthetic resin into a rectangular box shape, and a step portion 6a is provided at one corner of the bottom thereof so that the outer side is lowered by one step, and the center of the step portion 6a is provided on both inner and outer sides. A cylindrical protrusion 6b having a communication hole 6c communicating with each other is provided in a protruding manner. As shown in FIG. 4 (a), the communication hole 6c is formed with a bent portion 6d at the inner opening.

The case 6 is a support piece for the base 1.
1b along the outer end surface and the outer surface of the lead-out terminal 5
After being fitted from the inner side of the base 1, place it with the outer side of the base 1 facing upward, and place it on the outer side of the base 1 and the case.
A liquid resin such as epoxy is applied to the root of each lead-out terminal 5 led out from the fitting gap with respect to 1, and is cured by heating to seal the fitting root and the fitting gap between the base 1 and the case 1. At this time, the thermally expanded internal air is projected
Since it is released from the communication hole 6c of 6b to the outside, the internal air pressure does not rise and the sealed state is not deteriorated.

Next, as shown in FIG. 4 (b), this relay is sealed by being thermally deformed into an umbrella shape by being pressed by the projection 6b of the case 6 to be sealed. At this time, the icicle portion 6e generated by the resin melted in the communication hole 6c does not come into contact with the movable spring 3b adjacent to the inside of the opening portion by being obstructed by the bent portion 6d provided in the opening portion.

In such a relay, as described above, with the outer side of the base 1 placed upward,
When the root of one end of the common terminal (lead-out terminal) 51 is sealed with a liquid resin, the liquid resin propagates through the common terminal 51 and then, as shown by the white arrow in FIG. It tries to go through the gap 1d provided between the side wall 1c of the base 1 located on the side facing the side, and the gap 1d is formed by the blocking piece 51a provided at the common terminal 51 when viewed from the outside of the base 1. Since it is blocked, it is blocked by the blocking piece 51a and does not reach the support piece 1b provided on the inner side of the base 1.Of course, the hinge spring piece 4 fixed to the support piece 1b also does not reach, The spring constant of the spring force generator 4b for swinging the armature block 3 does not change, and the operating characteristics of the relay can be stabilized.

Further, the closing piece 51a provided on the common terminal 51 is
As a means for closing the gap 1d, for example, the side wall 1c of the base 1
However, in the present embodiment, the liquid resin may enter through the gap, while in the present embodiment, the engaging groove formed on the side wall 1c of the base 1 Since the gap 1d is closed by engaging with the 1e, the liquid resin cannot pass over the closing piece 51a unless it goes around the engaging groove 1e, so that the liquid resin is further prevented from reaching the hinge spring piece 4. It can be reliably blocked.

Since the liquid resin has a high viscosity and is difficult to flow, the engaging groove 1e may not be provided if the blocking piece 51a does not enter even if it comes into contact with the side wall 1c of the base 1.

Next, a second embodiment will be described below with reference to FIG. The members having substantially the same functions as those in the first embodiment are designated by the same reference numerals, and only different points will be described.

That is, in this device, unlike the first embodiment, the common terminal (lead-out terminal) 51 does not have the closing piece 51a, and therefore the side wall 1c of the base 1 is not provided with the engaging groove 1e. However, the hinge spring piece 4 has a spring force generating portion 4b that generates a spring force related to the swing of the armature block 4, that is, a restoring force.
By providing the notch 4c, it is kept away from the outer end surface of the support piece 1b of the base 1.

In such a relay, even if the liquid resin reaches the supporting piece 1b through the common terminal 51 and the case 6,
The spring force generating portion 4b of the hinge spring piece 4 which is kept away from the outer end surface of the support piece 1b by the cutout portion 4c does not reach the
Similar to the first embodiment, the operating characteristics of the relay can be stabilized.

If the liquid resin has a low viscosity and flows easily, the closing piece 51a and the engaging groove 1e of the first embodiment may be provided and the notch 4c of the second embodiment may be provided. .

[0032]

According to the first aspect of the present invention, when the base of one end of the lead-out terminal is sealed with the liquid resin in a state where the base is placed with the outer side thereof facing upward, the liquid resin propagates through the lead-out terminal. After that, it tries to go through the gap provided between the lead-out terminal and the side wall of the base located on the other surface side of the support piece, but the gap is provided in the lead-out terminal when viewed from the outside of the base. Since it is blocked by the blocking piece, it is blocked by the blocking piece and does not reach the supporting piece provided on the inner side of the base. Of course, the hinge spring piece fixed to the supporting piece does not reach the armature. The spring constant of the spring force generating portion for rocking the block does not change, and the operating characteristics of the relay can be stabilized.

According to a second aspect of the present invention, the closing piece provided on the lead-out terminal serves as means for closing a gap provided between the lead-out terminal and the side wall of the base located on the other surface side of the support piece. For example, when abutting against the side wall of the base, a slight gap is generated in the abutting portion, and the liquid resin may enter through the gap, whereas in the present invention, the engagement provided on the side wall of the base. Since the gap is closed by engaging with the groove, the liquid resin cannot pass over the closing piece unless it goes around the engaging groove, so that it is more surely prevented from reaching the hinge spring piece. It is possible to further stabilize the operating characteristics of the relay.

According to the third aspect of the present invention, even if the liquid resin reaches the support piece through the lead-out terminal and the case,
Since the spring force generating portion of the hinge spring piece, which is kept away from the outer end surface of the support piece by the cutout portion, does not reach the spring force generating portion, the operating characteristic of the relay can be stabilized.

[Brief description of drawings]

FIG. 1 is a perspective view showing a first embodiment of the present invention.

FIG. 2 is a partial perspective view showing an essential part of the above.

FIG. 3 is a partial cross-sectional view showing the main part of the above.

FIG. 4 is a cross-sectional view showing a sealed portion of the above case.

FIG. 5 is a partial plan view showing a main part of a second embodiment of the present invention.

FIG. 6 is a perspective view showing a conventional example.

FIG. 7 is a partial perspective view showing an essential part of the above.

FIG. 8 is a partial plan view showing the main part of the above.

[Explanation of symbols]

 1 Base 1a Fixed contact 1b Support piece 1c Side wall 1d Gap 1e Engagement groove 2 Electromagnet 2a Iron core 3 Armature block 3a Armature 3b Movable spring 4 Hinge spring piece 4a Tip part 4b Spring force generating part 4c Notch part 51 Common terminal (Leading terminal) 51a Closure piece 6 cases

Claims (3)

[Claims] 1. A base provided with a fixed contact, an electromagnet having a coil wound around an iron core and mounted on the base, and a movable spring provided with a movable contact coming in contact with and separated from the fixed contact are integrally fixed to an armature. Armature block, a hinge spring piece whose tip is fixedly attached to one surface of the support piece provided on the inner side of the base to hingeably support the armature block, and the other side of the support piece. A lead-out terminal that is disposed along the side wall of the base located with a gap and one end of which is led out to the outside of the base, and one end of the lead-out terminal on the outside of the base. A relay having a liquid resin for sealing the base, wherein the lead-out terminal is provided with a closing piece for closing a gap between the base and a side wall of the base when viewed from the outside of the base. . 2. The relay according to claim 1, wherein an engaging groove with which the closing piece engages is provided in a side wall of the base. 3. A base provided with a fixed contact, an electromagnet having a coil wound around an iron core and mounted on the base, and a movable spring provided with a movable contact coming in contact with and separated from the fixed contact are integrally fixed to an armature. Armature block, a hinge spring piece whose tip is fixedly attached to one surface of the support piece provided on the inner side of the base to hingeably support the armature block, and the other side of the support piece. A lead-out terminal that is arranged along the side wall of the base and whose one end is led out to the outside of the base, and from the inside of the base along the outer end surface of the support piece and the outside surface of the lead-out terminal. In a relay including a case to be fitted and a liquid resin that seals the base of one end of the lead-out terminal on the outer side of the base, the hinge spring piece is a spring related to the swing of the armature block. The spring force generating part for generating force is A relay characterized in that a cutout portion is provided to avoid moving away from the outer end surface of the support piece.