JPS5815908B2 - How to connect lead wires - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a lead wire connection method that can be used when connecting lead wires to terminals in the manufacturing process of electrical equipment such as television receivers.

In the manufacturing process of television receivers, etc., lead wires are often connected to terminals fixed to printed circuit boards, etc., but conventionally, as shown in Figure 1, the end of lead wire 1 is insulated. The covering 2 is removed to expose a plurality of core wires 3, and after twisting or soldering the core wires 3, they are wrapped around the terminal 4 with radio pliers or the like as shown in Fig. 2, and then soldered. Ta.

However, in this conventional connection method, the tip of the core wire 3 has to be grasped with radio pliers and wrapped around the terminal 4, resulting in poor work efficiency.Moreover, since the amount of winding is large, the quality of the connection is poor. There was an inconvenience that the value was not constant.

SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a connection method that can eliminate such conventional drawbacks, improve the efficiency of connection operations, and ensure connection at all times.

DESCRIPTION OF THE PREFERRED EMBODIMENTS The lead wire connection method of the present invention will be described below with reference to drawings showing the connection process in one embodiment.

In this connection method, first, as shown in FIG. 3, the insulation coating 6 at the end of the wire 7, which has an insulation coating 6 provided around the outer periphery of a plurality of thin core wires 5, is removed to expose the core wire 5. and the exposed tip portion 8 of the core wire 5 is integrated.

Here, integration refers to fixing the core wires 5 to each other so that they do not separate, and this can be done by welding, which will be described later, or by soldering, or by fitting rings together. Any means may be used, such as by crimping the material.

Next, as shown in FIG. 4, the exposed core wire of the lead wire 7 is inserted between the lower jig 10 to which the pin 9 with a pointed end is attached and the upper jig 12 provided with the hole 11 into which the pin 9 is fitted. 5, and then, as shown in FIG. By this means, the core wire 5 is divided into two parts, and a loop-shaped part 13 is formed in this part.

FIG. 6 shows the lead wire 7 with the loop-shaped portion 13 created in this manner.

Thereafter, as shown in FIG. 7, the loop-shaped part 13 of the lead wire 7 created in this way is fitted to the terminal 14 to be connected, and the loop-shaped part 13 is pressed down with radio pliers or the like, and the lead wire 7 The connection with terminal 14 is completed.

FIG. 8 shows a state in which the connection is completed.

In this way, the loop-shaped portion 13 of the lead wire 7 is connected to the terminal 1.
4, it is only necessary to fit the screws into the screws 4 and 4, making it possible to improve the workability of the cresting work.

Furthermore, since the connection method is unified and standardized, variations in connection due to individual differences do not occur.

Furthermore, in order to ensure the connection, after fitting the loop portion 13 to the terminal 14 as shown in FIG. 9A, the lead wire γ
The loop-shaped portion 13 can be crimped onto the terminal 14 by twisting it as shown in FIG.

In order to make a more secure connection, after fitting the loop-shaped part 13 of the lead wire T to the terminal 14, either leave it as it is or crush it with radio pliers etc. as shown in Fig. 8. In this case, the core wire 5 and the terminal 14 may be soldered while being twisted and crimped as shown in FIG.

Next, an example of an apparatus for carrying out the steps of cutting the lead wire 7, exposing the core wire 5, and integrating the tip portion 8 by welding will be described with reference to FIG. 10.

This device is equipped with a cutter/electrode 15 for cutting and welding, a cutter 16 for removing insulation coating, a gripping tool 17 for holding down the lead wire, and a roller 18 for feeding the lead wire.

First, the lead wire 7 is fed by a predetermined length by the roller 18 in the state shown in FIG. 10A.

Next, as shown in FIG. B, the row 218 is stopped and the gripping tool 1 is
While gripping and fixing the lead wire 7 with the wire 7, the cutter/electrode 15 is brought close to cut the insulation coating 6, and at the same time, a current is passed from a power source (not shown) to the electrode 15 to fuse the core wire 5. Then, the tips are welded and integrated.

Further, the cutter 16 is brought close to cut the insulation coating 6 at a predetermined position.

Thereafter, the cutter/electrode 16 is released and the cutter/electrode 16 is moved leftward to remove the insulation coating 6 from the end of the lead wire 7, as shown in FIG.

After that, the state returns to the state shown in FIG. By repeating this process, it is possible to create a lead wire 7 in which the insulating coating 6 at the end is removed to expose the core wire 5 and the tip 8 is integrated by welding, as shown in FIG.

As detailed above, the lead wire connection method of the present invention includes removing the insulation coating at the end of the lead wire, which is formed by providing an insulation coating around the outer periphery of a plurality of core wires, to expose the core wires. The tips of the core wires are integrated, and a pin with a pointed end is press-fitted into the core wire between the integrated tips and the insulation coating to form a loop-shaped part in the core wire, and this loop-shaped part is fitted into the terminal. It is characterized by connecting the lead wire and the left terminal.

Therefore, according to the present invention, a loop-shaped portion can be easily created in the lead wire core wire, and since it is only necessary to fit this loop-shaped portion into a terminal, the workability of connection can be significantly improved. It is something.

Furthermore, since the connection work can be unified and simplified compared to the method in which the lead wire is wound around the terminal, variations in connection due to individual differences can be reduced, and connection reliability can also be improved.

After fitting the loop part into the terminal, twisting the lead wire and crimping the loop part to the terminal, and then soldering it, makes the connection even more reliable. .

[Brief explanation of the drawing]

Fig. 1 is a front view of a lead wire used in the conventional lead wire connection method, Fig. 12 is a perspective view of the lead wire connected by the same connection method, and Fig. 3 is a lead wire used in the lead wire connection method of the present invention. Front view of an example of the line, Figures 4A, B and 5
Figures A and B are a front view and a side view of an example of the loop-shaped part creation process in the same connection method, Figure 6 is a front view of the lead wire that created the same loop-shaped part, Figures 7, 8, and 9. Diagram A
, B are a perspective view and a plan view of an example of a state connected by the same connection method, and FIGS. 10A, B, and C are sectional front views of an example of the lead wire cutting, integration, and core wire exposure steps in the same connection method. be. 5...Core wire, 6...Insulation coating, 7...Lead wire, 8...
Integrated tip, 9...pin, 10...lower jig, 11
... Hole, 12 ... Upper jig, 13 ... Loop-shaped part, 14 ...
...Terminal, 15...Cutter and electrode, 16...Cutter,
17...Gripper, 18...Roller.

Claims (1)

[Scope of Claims] 1. The insulation coating at the end of a lead wire in which an insulation coating is provided on the outer periphery of a plurality of core wires is removed to expose the core wire, and the tips of the exposed core wires are integrated. A pin having a solid wire is press-fitted into the core wire between the turned tip portion and the insulation coating to form a loop-shaped portion in the core wire, and this loop-shaped portion is fitted to the terminal to connect the lead wire and the terminal. A lead wire connection method characterized by connecting. 2. A method for connecting a lead wire according to claim 1, characterized in that after the loop-shaped portion is fitted to the terminal, the lead wire is twisted to crimp the loop-shaped portion to the terminal. . 3. Claim 1, characterized in that the core wire of the lead wire is cut by fusing, and the cut portion is simultaneously integrated.
2. A method for connecting lead wires as described in Section 2 or Section 2. 4. The lead wire connection method according to claim 1, 2, or 3, characterized in that the fitted lead wire and core wire are soldered.