JPS5831759B2 - Lead wire connection method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for connecting lead wires, and in particular, after one end of the lead wire is connected to a printed circuit board and the other end is connected to a connector, pins set with values on other printed circuit boards are connected. The present invention provides a suitable lead wire connection method for use when connecting and fixing the lead wires to the lead wires.

When wiring from one printed circuit board to another circuit or another printed circuit board, conventionally, a connector is fixed to at least one end of a lead wire, and the conductor portion of the other end of the lead wire is prepared in advance. was inserted into the specified hole of the printed circuit board and soldered to the copper foil part on the back side, while the other connector was connected to another circuit or another printed circuit board, but the lead wire with the connector was long, so the work was not completed. This has become a nuisance and has caused various problems.

The present invention eliminates the above-mentioned conventional drawbacks, and when the conductor part of one end of the lead wire is inserted into a predetermined hole of a printed circuit board and soldered to the copper foil part on the back side, a connector is simultaneously formed on the other end of the lead wire. After that, a connector is constructed, and then the connector is used to connect to another printed circuit board.

One embodiment will be described below with reference to the accompanying drawings.

In this embodiment, a case will be described in which a plurality of printed circuit boards are connected to each other.

Figures 1 to 3 show the first step of this connection method,
One end conductor portion 1a of a lead wire 1 for connecting different printed circuit boards is inserted into an insertion hole 3 of a printed circuit board 2 and fixed to a back surface copper foil portion 4 with solder 5.

At this time, the other end of the lead wire 1 has a terminal 6 formed of a cylindrical lead wire holding part 6a having a notched groove over the entire length and a leg part 6b continuous with this holding part 6a, as shown in detail in FIG. On the other hand, a hole 7 is provided on the back surface of the printed circuit board 2 where the copper foil part is not formed, and the other end of the lead wire 1 is inserted into the lead wire holding part 6a of the terminal 6 to form a conductor part. 1a is located along the leg 6b,
Hold the terminal 6 and connect the leg 6b of the terminal 6 to the lead wire 1.
It is inserted into the above-mentioned hole 7 together with the conductor portion 1a so that a part thereof protrudes from the back surface of the printed circuit board 2.

Then, as described above, the conductor portion 1a at one end of the lead wire 1 is fixed to the copper foil portion 4 together with other components 8 by dipping soldering, and at the same time, the terminal 6 inserted into the through hole 7
The leg portion 6b and the other end conductor portion 1a of the lead wire 1 are connected and fixed with solder 9.

This state is shown in FIGS. 1 and 3. In this case, since there is no copper foil around the hole 7, the terminal 6 and the lead wire 1
The other end conductor portion 1a is not fixed to the printed circuit board 2, and only the leg portion 6b and the other end conductor portion 1a are connected and fixed.

After that, insert the lead wire 1 and the leg portion 6b of the terminal 6 into the hole 7.
Here, reference numeral 10 indicates a locking piece formed integrally with the terminal 6 by cutting and bending or the like.

Next, as shown in FIGS. 4a, b, and c, the lead wire 1 is pulled out from the lead wire holding portion 6a of the terminal 6 using the notch groove.
The contact portion between the terminal 6 and the lead wire 1 is only the connection portion between the leg portion 6b and the other end conductor portion 1a.

Then, as shown in FIGS. 5a and 5b, the terminal 6 is inserted into a cylindrical insulating housing 12 having a locking step 11,
A connector is formed by engaging the locking piece 10 with the locking step 11 to prevent the terminal 6 from easily coming off in the direction opposite to the insertion direction.

Of course, it goes without saying that the terminal 6 is prevented from coming off in the insertion direction by a stopper or the like provided integrally with the insulating housing 12, although not shown.

Then, as shown in FIG.
Insert the solder into the fixed pin 15,
Terminal 6 and pin 15 are electrically connected, and printed circuit board 2
and the printed circuit board 13 are electrically connected.

According to the above configuration, the other end conductor portion 1a of the lead wire 1 connecting the connector is soldered to the one end conductor portion 1a of the lead wire and other electronic components at the same time as the terminal 6 constituting the connector on the same board 2. After that, the connector can be constructed simply by inserting the terminal 6 into the insulating housing 12, and wiring of the lead wire 1 becomes easy.

Note that although the above embodiments have been described in connection with the case where printed circuit boards are connected to each other, the present invention is of course not limited to this.

As explained above, according to the method of the present invention, the conductor at one end of the lead wire and other electronic components are soldered at the same time as the terminal constituting the connector is connected to the conductor at the other end of the lead wire, and then By inserting the terminals into the insulating housing to construct the connector, wiring of the lead wires becomes extremely easy.

[Brief explanation of the drawing]

FIG. 1 is a sectional view for explaining a lead wire connection method in an embodiment of the present invention, FIG. 2 is an exploded perspective view of the main part, FIG. 3 is a sectional view of the main part, and FIG. 4a. 5a and 5b are perspective views and sectional views of essential parts showing the process of configuring the connector, and FIG. 6 is a diagram showing how printed circuit boards are connected using the same connector. 1...Lead wire, 1a...Conductor part, 2
...Printed circuit board, 3...Insertion hole, 6.
...Terminal, 6a...Lead wire holding part, 6
b...leg, 7...stop hole.

Claims (1)

[Claims] 1. A terminal is provided which is an integral part of a substantially cylindrical lead wire holding part and a leg part into which one end of the lead wire is inserted and has a notch along the insertion direction, and one end of the lead wire is inserted into the lead wire holding part. Insert the lead wire and position the conductor at one end along the leg, insert the leg and conductor into a hole around the printed circuit board that does not have a copper foil part, and place the conductor at the other end of the lead wire. Simultaneously with soldering the parts and electronic components to the printed circuit board, the legs and one end conductor part are soldered. After that, the legs and one end conductor part of the lead wire are pulled out from the said hole, and then one end of the lead wire is soldered. is pulled out from the lead wire holding portion, the terminal and the lead wire are connected only by the soldered fixing portion between the conductor portion at one end of the lead wire and the leg portion, and the terminal is inserted into an insulating housing to form a connector. How to connect lead wires.