JPS5925334B2 - Polar lead relay - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a coil frame 3 composed of a pair of half bodies 1 and 2.
A flat magnetic pole plate 9°9 is inserted into both half bodies 1 and 2, and a contact plate 4 is inserted into the joint surface of both half bodies 1 and 2, respectively.
, 5 are provided, and the end faces of the flat contact plates 4, 5 inserted into each mounting hole 30.33 are welded to the magnetic pole plates 9, 9 and arranged between the two magnetic pole plates 9, 9. A contact plate 4 is placed in the magnetic circuit of the magnet 28 whose poles are closely opposed to the magnetic pole plates 9, 9, respectively.
This relates to a polarized reed relay characterized in that the lead 6 is disposed within the contact gap between both contact plates 4 and 5.

In a polarized reed relay, the magnets are arranged on the surfaces of a pair of magnetic pole plates, so a certain distance must be maintained between the two magnetic pole plates, but the contact gap is much smaller than this distance, which is why conventional In this method, bent L-shaped conductive magnetic metal pieces were inserted into a pair of halves constituting the coil frame, so that one piece was used as a magnetic pole plate and the other piece was used as a contact plate.

In this conventional example, since the metal piece is bent, the insertion position into the mold can be maintained with high precision, and the accuracy during bending directly affects the contact gap. It is difficult to obtain a stable contact gap, that is, stable operating characteristics, and furthermore, molding burrs inevitably occur on and near the contact surfaces that come into contact with the leads, and it takes time and effort to remove these molding burrs. Was.

The present invention has been made in view of the above points, and its object is to provide a polarized reed relay that exhibits stable characteristics by incorporating magnetic pole plates and contact plates with high precision.

The present invention will be described in detail below based on illustrated embodiments.

The coil frame 3 is formed by joining a pair of half bodies 1 and 2, both of which are molded from synthetic resin, and in the figure, 24 is a case, and 36 is a bottom cover.

One half body 1 is composed of a groove-shaped lead receiver 14 in which a lead 6 is disposed on its upper surface, and terminal blocks 15 and 16 integrally molded at both ends of the lead receiver 140. The split body 2 is composed of a lead cover 11 that covers the lead receiver 14 and terminal blocks 18 and 19 that are integrally molded on both ends of the lead cover 17, and the two half bodies 1 and 2 are joined by one half body. This is done by fitting a guide pin 20 protruding from the upper surface of the other half body 2 into a guide hole 21 bored in the lower surface of the other half body 2.

Note that the middle hand-splitting body 2 in FIG. 1 is drawn upside down.

The terminal blocks 15 and 16 of one half body 10 have coil terminals 22 and 22 having coil lead winding portions 42 inserted thereinto protruding downward from each side.
5, a common contact terminal 10 connected to the lead 6, a protrusion 43 that contacts the case 24 made of magnetic material that houses the entire coil frame 3, and a ground terminal 25 are both inserted and protrude downward from the side surface. .

The other terminal block 16 has a magnet hole 29 in which a magnet 28 is housed.
A mounting hole 30 in which a flat contact plate 4 whose end face faces the contact portion 6a of the lead 6 is housed is provided on the top surface, and a conductive hole 30 is provided inside to magnetically connect the magnet 28 and the contact plate 4. A flat magnetic pole plate 9 is inserted.

The magnetic pole plate 9 integrally has a fixed contact terminal 11 projecting downward from the side surface of the terminal block 16.

The terminal block 19 of the other half body 2 also has a magnet hole 29 on its bottom surface.
and a mounting hole 33 for accommodating the contact plate 5, and a flat magnetic pole plate 9 integrally having a fixed contact terminal 12 is inserted therein.

Thus, when both halves 1 and 2 are joined, the contact portion 6a of the lead 6 is connected to the pair of contact plates 4 housed in each half body 1 and 2.
A magnetic circuit is constituted by the magnet 28, both magnetic pole plates 9, 9, and both contact plates 4, 5. At this time, since the magnet 28 is placed close to one of the magnetic pole plates 9, one of the contact plates 1
The contact portion 6a of the lead 6 is attracted to the coil 8, and when current flows through the coil 8, the portion 6 of the reed is magnetized and attracted to the other contact plate 4.

In the coil frame 3 configured as described above, each terminal is inserted into the terminal insertion hole 37 provided in the bottom cover 3b, the case 24 is covered, and the space between the groove 38 on the back surface periphery of the bottom cover 36 and the opening periphery of the case 24 is is filled with sealing material 45.

Next, referring back to the manufacturing process of the coil frame 3, we will explain how to assemble the magnetic pole plate 9 and the contact plates 4 and 5. In Fig. 6, A is a conductive plate, and this conductive plate A has a ground terminal 25 and a common contact. The metal pieces that will become the terminal 10 and the coil terminals 22 and 22 are punched and formed to match these shapes.

Reference numeral B designates a conductive magnetic plate, and on this conductive magnetic plate B, a pair of magnetic pole plates 9 and metal pieces forming fixed contact terminals 11 and 12 are punched and formed to match the shapes of these plates.

Then, the conductive plate A and the conductive magnetic plate B are arranged in parallel and housed in one mold, and both halves 1 and 2 are simultaneously molded to form each metal piece that will become each terminal and magnetic pole plate 9, 9. Insert it.

Here, a part of the conductive magnetic plate B is inserted into one half body 1 and a part is inserted into the other half body 2, and both halves 1 and 2 are aligned and molded.

Thereafter, the rectangular flat contact plates 4 and 5 with uniform plating are inserted into the mounting holes 30 and 33, and their end faces are welded to the magnetic pole plates 9 and 9, respectively, and one end of the lead 6 is connected to the terminal block 15. The lead 6 is placed in the lead receiver 14 by welding to the common contact terminal 10 inside, and the magnet 28 is placed in the magnet hole 29.

Then, the conductive plate A and the conductive magnetic plate B are cut at appropriate positions, the two halves 1 and 2 are joined, and each terminal protruding laterally is bent downward.

As mentioned above, in the present invention, what is inserted into the pair of half halves constituting the coil frame is a flat magnetic pole plate, and the contact plate is attached after molding, so the magnetic pole plate during insert molding is In addition to being able to hold the position with high precision and suppressing variations in the spacing of the magnetic pole plates, it also allows for automation of insert insertion, and the contact plate, which is inserted into the mounting hole and whose end face is welded to the magnetic pole plate, is also flat. This has the effect of not only maintaining high dimensional accuracy but also making the thickness of the plating applied to this contact plate uniform, and eliminating dimensional errors during bending as in the conventional method. However, it is possible to obtain a stable contact gap, that is, stable characteristics.Moreover, the coil frame is composed of a pair of halves into which magnetic pole plates are inserted, and the coil frame is made up of a pair of halves into which magnetic pole plates are inserted. The contact plate that is welded to the magnetic pole plate is inserted into the mounting hole provided on the joint surface of both halves. Despite the fact that the contact plate is installed by inserting it into the mounting hole on the joining surface of both halves, which will be located inside the coil frame when both halves are combined, the contact plate is It is easy to assemble the plate, and the tip inserted into the mounting hole of the contact plate is the welding side with the magnetic pole plate, and the rear end, which is the joint surface side, becomes the contact surface, so the contact gap can be managed. It is also easy to perform, and therefore, it is easy to respond to manufacturing automation.

[Brief explanation of the drawing]

Fig. 1 is an exploded perspective view of one embodiment of the present invention, Fig. 2 is a cutaway plan view of the same, Fig. 3 is a sectional view taken along line C-C in Fig. 2, and Fig. 4 is a C-C in Fig. 2. 5 is a sectional view taken along the line C--C in FIG. 2, and FIG. 6 is a perspective view showing a process of forming the same coil frame, in which 1 and 2 are half pieces, and 3 is a half-piece. Coil frame, 4
and 5 is a contact plate, 6 is a lead, 9 is a magnetic pole plate, 28 is a magnet, 30... *""".

Claims (1)

[Claims] 1 A flat magnetic pole plate was inserted into both halves of a coil frame composed of a pair of halves, and mounting holes for contact plates were provided on the joining surfaces of both halves, and the contact plates were inserted into each mounting hole. The end face of a flat contact plate is welded to a magnetic pole plate, and the contact plate is positioned in the magnetic circuit of a magnet that is placed between both magnetic pole plates and whose poles closely face each other, thereby forming a contact between both contact plates. A polarized reed relay characterized by having a lead arranged within a gap.