JPS6338519Y2 - - Google Patents

Description

[Detailed explanation of the idea] This invention relates to relays.

Sealed relays used in conventional relays are
Since the coil part and the contact part are housed in the same container, as the coil heats up during use, organic substances are generated as a gas from the coil windings and coil frame, and the contact part It adhered to parts and caused poor contact and corrosion.

On the other hand, there have been conventional relays in which the coil portion and the contact portion are sealed and separated by a substrate (for example, Japanese Patent Laid-Open No. 85852/1983). However, since the contact portion operates at right angles to the plane of the substrate, there was a drawback that the dimension in the thickness direction of the substrate became large. In addition, some general relays have contacts that operate parallel to the board (for example, Utility Model Application No. 50-23636).
However, since the armature and the coil section are arranged in a stacked manner above the contact section, the substrate is large in the thickness direction, making it unsuitable for a flat type.

Therefore, an object of this invention is to provide a relay in which the contact portion and the coil can be hermetically separated and the dimension of the board in the thickness direction can be reduced.

An embodiment of this invention will be explained based on FIGS. 1 to 3. In other words, FIG. 1 is an exploded view of the parts, in which a case 2 is attached to the contact opening/closing part 1, a coil 3 is connected thereto, and an outer case 4 is further attached to this to be assembled.

The contact switching unit 1 has a support shaft 6 for an armature in the center on the upper surface of a substrate 5 made of a non-magnetic metal plate, and a fixed contact spring 8 is mounted around the support shaft 6.
A pair of contact portions consisting of a movable contact spring 9 and two yokes 7 are arranged symmetrically so as to maintain electrical insulation from each other, and
An armature 10 is rotatably supported on the support shaft 6 in a direction parallel to the substrate 5, and its tip acts on the movable contact spring 9 when it is attracted to and detached from the yoke 7. There is. That is, by energizing the coil 3 (to be described later), a magnetic attraction force is applied to the yoke 7, and by attracting the armature 10, the movable contact spring 9 is pressed by the cards 11 provided at both ends of the armature 10. and the movable contact spring 9 and the fixed contact spring 8
The movable contact 9a and the fixed contact 8a are separated from each other. In this case, the movable contact spring 9 operates parallel to the substrate 5. Also, coil 3
When not energized, the return spring 12 disposed near the support shaft 6 of the armature 10 releases the armature 10 from the yoke 7, and the fixed contact 8 of the fixed contact spring 8
a and the movable contact 9a of the movable contact spring 9 are kept in contact with each other. Furthermore, as shown in FIG. 2, terminals 13 and 14 are made to penetrate and protrude from the bottom surface of the substrate from the ends that serve as fulcrums of the fixed contact spring 8 and the movable contact spring 9 arranged on the top surface of the substrate 5, respectively. There are terminals 1 for the coil on both sides of the
5 is also provided penetrating the upper and lower surfaces. Glass sealing 16 is applied to each penetrating portion to maintain insulation.

The case 2 is made of a non-magnetic metal plate, and has a hole 1 with a collar on the top surface for protruding the yoke 7.
7 and a coil terminal recess 1 on both sides.
There are 8. Then, this case 2 is attached to the contact opening/closing part 1, the yoke 7 is made to protrude from the hole 17, and both ends of the iron core 19 of the coil 3 are brought into contact with the tip of the yoke 7,
At that point, the iron core 19 and collared hole 17 are welded and sealed to the yoke 7, and the winding end of the coil 3 is connected to the coil terminal 15 of the board 5 in the case 2 of the coil terminal recess 18. Connect on the outside and connect the third
Assemble as shown in the figure, and then attach the outer case 4 to complete the relay.

As a result of this configuration, the contact opening/closing part 1 and the upper surface of the case 2 in which the coil 3 is installed are completely separated, and the yoke 7 connecting the contact opening/closing part 1 and the iron core 19 of the coil 3 is completely separated. Since the hole 17 with the collar on the case 2 is welded and sealed,
The organic gas generated in the coil 3 does not enter the contact opening/closing part 1, and therefore the support shaft 6, fixed contact spring 8, movable contact spring 9, armature 10 and its card 11, etc. are free from organic substances. Since it does not adhere, it always operates accurately without causing poor contact or corrosion, and has excellent durability. Note that the substrate 5, case 2, etc. may be made of plastic, and since the contact opening/closing part 1 and the coil 3 part are completely separated, it is only necessary to consider the moisture resistance of the coil 3 part. Therefore, it is possible to make the outer case 4 a plastic case or to seal it by resin filling.

As mentioned above, the relay of this invention has a substrate,
A pair of terminals having a terminal penetrating through the board, a movable contact spring mounted on the top surface of the board and opening/closing in a direction parallel to the plane of the board, and a fixed contact spring opposing this, and connected to the terminal. and an armature whose intermediate portion is pivotally supported between the pair of contact portions of the substrate, rotates in a direction parallel to the plane of the substrate, and is biased to return in one direction by a return spring. A pair of yokes are installed at both ends of the armature on opposite sides of the biasing direction of the return spring, and the upper surface of the substrate is coated so as to pass through these yokes to seal the contact portion. and an iron core connected between yoke protruding from the upper surface of the case and wound with a coil, the movable contact spring being driven by the armature with the armature being attracted to the yoke. Since it is opened or closed with respect to the fixed contact spring, it has the following effects.

In other words, since the contact part is completely separated from the coil by the case, the contact part is not affected by the organic gas generated in the coil part, and the contact part always operates accurately and has stable performance with good durability. It can be made reliable. In addition, since an armature that operates in a direction parallel to the board is placed between a pair of contact parts having a movable contact spring that operates in a direction parallel to the plane of the board, the dimension in the thickness direction of the board can be reduced, and the flat A relay can be realized.

[Brief explanation of the drawing]

FIG. 1 is an exploded parts diagram showing one embodiment of this invention, FIG. 2 is an explanatory diagram of a board, and FIG. 3 is an explanatory diagram of assembly. 1... Contact opening/closing part, 2... Case, 3... Coil, 5... Board, 6... Support shaft, 7... Yoke, 8
...Fixed contact spring, 9...Movable contact spring, 10...
... Armature, 12 ... Return spring, 13-15 ... Terminal, 17 ... Hole, 19 ... Iron core.

Claims (1)

[Scope of utility model registration request] The device has a circuit board, a terminal penetrated through the circuit board, a movable contact spring mounted on the top surface of the circuit board to open and close in a direction parallel to the plane of the circuit board, and a fixed contact spring facing the same, and connected to the terminal. The intermediate portion is pivotally supported between the pair of contact portions of the substrate and the pair of contact portions of the substrate, and rotates in a direction parallel to the plane of the substrate, and is biased to return in one direction by a return spring. an armature, a pair of yokes erected at both ends of the armature on opposite sides of the biasing direction of the return spring, and a contact point that is coated on the upper surface of the substrate so as to pass through these yokes. and an iron core connected between yoke protruding from the upper surface of the case and wound with a coil; A relay that opens or closes a contact spring relative to the fixed contact spring.