JP2913952B2 - Fixing method of coil lead wire - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of connecting a coil lead wire of a reed relay or the like, and more particularly to a method of fixing a coil lead wire of a tubular relay to a coil external terminal.

[0002]

2. Description of the Related Art Conventionally, a reed switch is arranged in the center,
A relay wound with a coil and provided with a coil terminal is used as a tubular relay.

FIG. 5 is a front view of a tubular relay for explaining an example of the related art. As shown in FIG. 5, the method of connecting and fixing the coil lead wire 16 of the conventional tubular relay to the coil external terminals 20 and 21 is as follows.
The coil 2 is wound around the outer periphery of the body of the bobbin 1a having the coil 3b. Thereafter, a coil external terminal 2 composed of a straight wire is drawn.
0 and 21 are fixed on the coil 2 with a fixing tape 22, and the coil lead wires 16 are connected to the connection fixing portions 10 and 11 of the coil external terminals 20 and 21 located outside the flange 3b of the bobbin 1a by soldering. Fix it.

FIGS. 6A and 6B are left and right side views of the relay shown in FIG. 5, respectively. FIG. 6 (a), (b)
As shown in (1), the coil external terminals 20, 21 project outside the fixing tape 22 and outside the flanges 3a, 3b. Since there is a possibility that an external force may be applied to the terminals 20 and 21, it is necessary to firmly wind the fixing tape 22.

[0005]

According to the above-mentioned conventional method of fixing a coil lead wire, the coil lead wire is connected by soldering to a connection fixing portion of a coil external terminal, and then a reed switch is inserted into a bobbin in a relay manufacturing process. External stresses such as pulling and bending are applied when the components are incorporated, when they are stored in the outer case, and when the resin is used to handle the coil external terminals when the resin is filled. Therefore, when fixing the coil external terminal on the coil, if the fixing by the fixing tape is weak,
There is a disadvantage that the coil external terminal is shifted in the longitudinal direction of the bobbin. In addition, there is also a disadvantage that a stress is directly applied to the connection fixing portion due to bending or the like using the bobbin flange as a fulcrum, thereby causing a coil disconnection.

An object of the present invention is to provide a method for fixing a coil lead wire, which can prevent the coil from being broken due to such external stress.

[0007]

A method of fixing a coil lead wire according to the present invention is to wind a coil around the outer periphery of a bobbin of a tubular relay and fix the coil lead wire to a plurality of U-shaped coil external terminals. In this case, the bottom of the U-shaped coil external terminal is fixed to a stopper groove formed at one end of the bobbin flange, and the upper part of the U-shaped coil external terminal is inserted into a through hole provided at the other end of the flange. Then, the coil lead wire is connected to the shorter end of the U-shaped coil external terminal located outside the flange.

[0008]

Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a front view of a tubular relay for explaining an embodiment of the present invention.
(B) is a right and left side view of the relay shown in FIG.
As shown in FIGS. 1 and 2A and 2B, in the present embodiment, after the coil 2 is wound around the outer periphery of the body of the bobbin 1, the U-shaped coil external terminals 6, 7 are connected to the flange 3A of the bobbin 1. , 3
Insert into B. In this attachment, the bottoms 8 and 9 of the terminals 6 and 7 are fixed to stopper grooves 4 and 5 formed in the bobbin flange 3A, and the upper portions of the U-shaped coil external terminals 6 and 7 are inserted into through holes 17 provided in the bobbin flange 3B. 12,13 and 14,15
And insert it. Next, the shorter ends 12, 14 of the U-shaped coil external terminals 6, 7 are used for soldering the coil lead wires 16, and the distal ends located outside the bobbin flange 3B are used as connection fixing parts 10, 11, The coil lead wire 16 is connected and fixed there. The long terminal upper portions of the U-shaped coil external terminals 6 and 7 are used as they are as the coil external terminals of the relay.

Thus, the U-shaped coil external terminals 6, 7
Separate the long ones 13 and 15 on the upper side of the cable for external pull-out and go through each step to prevent external stress such as pulling and bending during connection manufacturing process and handling during relay use. It is possible not to directly participate in 10,11.

FIG. 3 is a front view of the external terminal of the U-shaped coil in FIG. As shown in FIG. 3, the U-shaped coil external terminal 6 includes a left bottom portion 8 and a short terminal upper portion 12 and a long terminal upper portion 13 on which a right connection fixing portion is formed. The same applies to the other U-shaped coil external terminal 7.

FIG. 4 is a front view of a tubular relay for explaining another embodiment of the present invention. As shown in FIG. 4, the present embodiment is different from the above-described embodiment of FIG. 1 in that the through holes 17 provided in the bobbin flange 3b are changed to guide grooves 18 and 19. In the present embodiment, the insertion of the U-shaped coil external terminals 6 and 7 during the relay manufacturing process operation is further facilitated, and the number of operation steps is reduced.
The other procedures and constituent members are the same as those of the above-described embodiment, and thus the description thereof is omitted.

[0013]

As described above, according to the method of fixing the coil lead wire of the present invention, the coil external terminal is U-shaped, and the bottom of the U-shaped coil external terminal is formed at one end of the bobbin flange. After inserting the upper part of the U-shaped coil external terminal into the other end of the bobbin flange,
By connecting a coil lead wire to the shorter end of the upper part of the U-shaped coil external terminal, the coil external terminal is divided into a coil lead wire soldering terminal and an external lead terminal. Even when external stress such as tension or bending is applied after completion, there is no need to directly apply stress to the soldered portion, and there is an effect that coil disconnection can be prevented.

[Brief description of the drawings]

FIG. 1 is a front view of a tubular relay for explaining an embodiment of the present invention.

FIG. 2 is a diagram showing both side surfaces of the relay shown in FIG.

FIG. 3 is a front view of a U-shaped coil external terminal in FIG. 1;

FIG. 4 is a front view of a tubular relay for explaining another embodiment of the present invention.

FIG. 5 is a front view of a tubular relay for explaining an example of the related art.

FIG. 6 is a diagram showing both side surfaces of the relay shown in FIG. 5;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Bobbin 2 Coil 3A, 3B Flange 4,5 Stopper groove 6,7 U-shaped coil external terminal 8,9 Bottom 10,11 Connection fixing part 12,14 Short terminal upper part 13,15 Long terminal upper part 16 Lead wire 17 Through hole 18, 19 Guide groove

Claims (2)

(57) [Claims] When a coil is wound around the outer periphery of a bobbin of a tubular relay and a coil lead wire is fixed to a plurality of U-shaped coil external terminals, the bottom of the U-shaped coil external terminal is connected to the bobbin. The U-shaped coil is fixed to a stopper groove formed at one end of the flange, the upper part of the U-shaped coil external terminal is inserted into a through hole provided at the other end of the flange, and then the U-shaped coil positioned outside the flange A method for fixing a coil lead wire, comprising connecting the coil lead wire to a shorter end of an external terminal. 2. The method according to claim 1, wherein the through hole formed in one of the bobbin flanges is a guide groove.