JPS5841606B2 - Method for manufacturing a coil frame for a polarized reed relay - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing a coil frame of a polarized relay, and includes magnetic pole plates 9 and fixed contacts that magnetically connect each contact plate 4, 5 and various types of magnets 28. Metal pieces that will become terminals 11 and 12 are continuously formed on conductive magnetic plate B, and metal pieces that will become terminals such as common contact terminal 10 and coil terminal are formed on conductive plate A.
A conductive plate A and a conductive magnetic plate B are arranged in parallel and fed into a mold, and a pair of half bodies 1.2 and both half bodies 1, 2 constituting the coil frame 3 are formed into a continuous shape. Connecting bendable bridge parts C are simultaneously molded in a row so that the bonding surfaces of each half body 1 and 2 face in the same direction, and one half body 1 is electrically conductive with a part of the conductive magnetic plate B. The polarized structure is characterized in that the plate A is inserted into the other half body 2, and a part of the conductive magnetic plate B is inserted into the other half body 2, and both halves 1 and 2 are bent and joined from the bridge part. The present invention relates to a method for manufacturing a coil frame for a relay relay.

Conventionally, coil frames made up of a pair of halves were molded separately, went through a process, and then were joined together using adhesives, etc. However, since it is difficult to handle them individually, automation of assembly is required. In addition, positioning during joining is troublesome, and the contact gap determined by the combination of the two halves has individual variations, making it difficult to obtain a stable product.

The present invention has been made in view of the above points, and its purpose is to simplify the assembly process, enable automatic continuous assembly, and provide a coil for a polarized reed relay with stable characteristics. To provide a frame manufacturing method.

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

First, the structure of the polarized reed relay will be described. It is composed of a case 24, a coil frame 3, and a bottom cover 36. The coil frame 3 is made by joining a pair of half bodies 1 and 2, both of which are molded from thermoplastic synthetic resin. The coil 8 wound around the coil frame 3 magnetizes the wire 6 disposed within the coil frame 8, and the contact plate 4 provided on each half body 1, 2.
The contact portion 6a of the lead 6, which is attracted to one of the two contact plates 5 and 5, is attracted to the other contact plate 5, 4 to perform contact exchange using the lead 6 as a common contact.

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

The half body 2 in Figure 1 is shown upside down. One of the 10-half terminal blocks 15 and 16 has a coil lead winding part 42.
Coil terminals 22 and 22 having the following properties are inserted and protrude downward from each side, and one terminal block 15 further includes a common contact terminal 10 connected to the lead 6 and a case made of magnetic material that houses the entire coil frame 3. Protrusion 4 in contact with 24
3 and 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 the contact plate 4 facing the contact portion of the lead 6 is housed is provided on the top surface, and a conductive magnetic pole plate 9 is inserted inside to magnetically connect the magnet 28 and the contact plate 4. has been done.

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.
A mounting hole 33 for receiving the contact plate 5 is provided during molding, and a magnetic pole plate 9 integrally having a fixed contact terminal 12 is inserted therein.

When the two halves 1 and 2 are joined together, the contact portion 6a of the IJ-doro is located between the pair of contact plates 4 and 5 housed in each half body 1 and 2, and the magnet 28 and magnet The contact portion 6a of the lead 6 is attracted to one contact plate 4 due to the magnetic path formed by the magnetic pole plates 9, 9, which are close to both poles of the coil 28, and the contact plates 4, 5, and the contact portion 6a of the lead 6 is attracted to the coil 8. When current flows, the leads 6 are magnetized and attracted to the other contact plate 4.

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

Next, the manufacturing process of the coil frame 3 will be explained.

In FIG. 3, A is a conductive plate, B is a conductive magnetic plate, and the conductive plate A has a common contact terminal 10 and a coil terminal 22°2.
2. A large number of metal pieces serving as the ground terminals 25 are continuously punched out in the longitudinal direction for the coil frames 3.

The conductive magnetic plate B has a magnetic pole plate 9 and a fixed contact terminal 11.1.
Similarly, a large number of metal pieces 2 are continuously punched out along the length thereof.

The conductive plate A and the conductive magnetic plate B are arranged in parallel and sequentially fed into one mold, and both halves 1 and 2 are simultaneously molded to form each metal terminal and magnetic pole plate 9. Insert the piece.

Here, a part of the conductive magnetic plate B on the conductive plate side is inserted into one half body 1 together with the conductive plate A, and a part on the other side of the conductive magnetic plate B is inserted into the other half body 2. The bridge portion connects the terminal block 16 of the adjacent half body 1 to the terminal block 19 of the half body 2, which is inserted and molded in a line. C is also molded at the same time.

This bridge portion C is formed to have a thin wall, and a groove 44 is cut in the center so that the wall thickness is particularly thin, so that it can be bent easily and accurately around this groove 44. .

For both halves 1 and 2 formed symmetrically around the bridge portion C in this manner, the leads 6 are welded to the common contact terminal 10 in the terminal block 15, and the contact plates 4 and 5 are attached to the mounting holes 30. 3
3 and welded to each magnetic pole plate 9, 9, inserting the magnet 28 into the magnet hole 29 successively, and then cutting the conductive plate A and the conductive magnetic plate B at appropriate positions to form the bridge part. Bend from C, overlap and join both halves 1 and 2, and combine them.

Then, the bridge portion C is removed and the terminals protruding laterally are bent downward.

As mentioned above, in the present invention, a part of the same conductive magnetic plate is inserted into the pair of halves and connected to each other, and the conductive plate and the conductive magnetic plate are automatically connected to each other in succession. Each half body can be molded, and the assembly of leads and magnets after molding can be carried out continuously and automatically on the half bodies, and both halves can be joined by bending from the bridge part. They can be easily positioned and combined.

In addition, since the coil frame and the pair of halves are molded at the same time and always stand in a fixed pair, the important dimensions such as the contact gap obtained by the combination are stable and have stable characteristics with little variation. The one that has this is the one that can be obtained.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of an embodiment of the present invention, FIG. 2 is a longitudinal cross-sectional view of the same, and FIG. 3 is a perspective view showing a process of molding the same, 1 and 2 are half-split bodies, 3 is a coil frame, 4 and 5 are contact plates, 6 is a lead, 9 is a magnetic pole plate, 10 is a common contact terminal,
11 and 12 are fixed contact terminals, 22 is a coil terminal, 28
is a magnet, A is a conductive plate, B is a conductive magnetic plate, and C is a bridge.

Claims (1)

[Claims] 1. Metal pieces that will become the magnetic pole plates and fixed contact terminals that magnetically connect each contact plate and each type of magnet are continuously formed on a conductive magnetic plate, and the metal pieces that will become the terminals such as the common contact terminal and the coil terminal are electrically conductive. A bendable bridge section that connects a pair of half-split bodies and both half-split bodies that constitute a coil frame by forming a continuous plate on a plate, supplying a conductive plate and a conductive magnetic plate in parallel and feeding them into a mold. are simultaneously molded in a row so that the bonding surfaces of each half body face the same direction, a part of the conductive magnetic plate and the conductive plate are inserted into one half body, and a conductive plate is inserted into the other half body. A method for manufacturing a coil frame for a polarized reed relay, characterized in that a part of a magnetic plate is inserted, and both halves are bent and joined from a bridge part.