JPS6242550Y2 - - Google Patents

Description

[Detailed explanation of the invention] This invention involves inserting a core wire with the tip of the lead wire stripped of its coating into a hole in a printed wiring board, passing it through a solder bath, and applying solder to the tip of the core wire that protrudes from the back of the board. When attaching and fixing electrically to the wiring board circuit,
The present invention relates to a lead wire fixing support that fixes the lead wire to a wiring board and supports the lead wire in a state where the core wire at the tip thereof is inserted into a hole in the wiring board.

In this way, insert the bare core wire at the tip of the covered lead wire into the specified hole of the printed wiring board, apply solder to the tip of the core wire that protrudes from the back of the wiring board, and connect the lead wire to the printed wiring board. To securely connect and fix the wire, you can either hold one lead wire in your hand, use a snap-in connector, or use various lead terminals. This means that when there are a large number of lead wires to be connected and fixed to the printed wiring board, the work efficiency is extremely poor and the work is time consuming and efficiency cannot be improved.Furthermore, when using connectors, the cost is high and the lead terminals are difficult to work with. When using a terminal, there are drawbacks such as it takes time to insert each terminal into the hole in the wiring board, and there is a risk that the terminal may come out before soldering.

Therefore, even if there are multiple lead wires to be connected and fixed to the board, this proposal maintains all of them in a state aligned with the holes in the wiring board, and eliminates the risk of the core wire at the tip of each lead wire passing through each hole in the wiring board. By making it possible to insert and solder at the same time without any problems, we solved the problems of the conventional method.
The present invention is intended to streamline the work of soldering lead wires to a printed wiring board, and will be described below with reference to an embodiment shown in the drawings.

Reference numeral 1 denotes a printed wiring board, which has a plurality of wiring holes 1' arranged in a predetermined manner into which core wires 2' of lead wires 2 are inserted and fixed.

The fixing support of the present invention has a holding hole 3 in the vertical direction with the same arrangement as the wiring hole 1', and a base 5 integrally provided with clip legs 4 facing downward for fixing to the board 5 on the lower surface. , are integrally connected to protrusions 5', 5' protruding from both ends 5a of the base body 5 by thin hinge pieces 6, 6, and the retaining hole 3 is connected by bending the hinge pieces 6, 6.
It is a plastic molded product consisting of a holding piece 7 that is movable across the top surface of a base 5 with an open top end, and a receiving surface 8 that stands up along the edge of the holding hole 3 on the top surface of the base 5. A raised step 8' is provided.

During molding, the hinge pieces 6, 6 are extended in a straight line, and the holding piece 7 is placed along the other side 5b of the base 5 while keeping a distance therebetween. Of course, the hinge pieces 6, 6 are also kept at a distance from each end face of the base body (FIGS. 2 and 3).
When in use, the hinge pieces 6, 6 are bent upward and pulled slightly, and the holding piece 7 is forced to swing over the top of the step 8' as shown by the arrow in FIG. The lower part 7' of the surface facing the receiving surface 8 is brought into contact with the upper part of the receiving surface 8, and the state shown in FIG. 1 is maintained.

To attach the lead wire 2, as described above, rotate the holding piece 7 further to separate it from the receiving surface 8, hold the holding piece in this state with your fingers, and press the holding piece 7 and the receiving surface of the step 8'. Insert the lead wire 2 from above into each holding hole 3 between the holes 8 (FIG. 4), and when the necessary lead wires have been inserted, release your finger from the holding piece. As a result, the hinge pieces 6, 6
Due to the elasticity of the wires trying to return to their original positions, the holding piece 7 presses all the lead wires toward the receiving surface 8 in a manner that is offset from the receiving surface 8, thereby holding the lead wires (FIG. 4). In this case, the tip of each lead wire that has protruded into the holding hole 3 is peeled off to expose the core wire 2', but the tip of the core wire may be placed so as to protrude the required amount from the bottom surface of the base, or It does not have to protrude from the bottom surface.

Next, the clip legs 4 are pushed into the mounting holes 9 formed in the printed wiring board 1 to fix the base body 5 on the wiring board. When the core wires of the lead wires protrude by the required amount from the lower surface of the base, the core wires are passed through the wiring holes 1' and the clip legs are pushed into the mounting holes and fixed to the wiring board. In addition, when the core wire does not protrude from the bottom surface of the base, if the base is fixed on the printed wiring board using the clip legs, the lower end of each holding hole 3 will communicate with the wiring hole 1', so press the holding piece 7 with your fingers again to the hinge piece 6. , 6, and push each lead wire downward into the holding hole, causing the core wire to protrude from the lower surface of the base and pass through into the wiring hole.

In this way, all of the lead wires that have passed through the core wires 2' at the tips into the wiring holes 1' are between the receiving surface 8 of the step 8' of the base body fixed on the wiring board 1 by the clip leg 4 and the holding piece 7. It is held in place and fixed to the wiring board without coming off. Therefore, by immersing the bottom surface of the wiring board in the liquid level of the solder solution in the solder melting tank, solder adheres to the tip of each core wire of the lead wire that protrudes from the bottom surface of the wiring board, and the lead wire is electrically connected to the wiring board. Fixed.

As shown in the figure, the holding hole 3 of the base body into which the lead wire is inserted is a tapered hole 3a whose diameter expands upward in the upper half, and the lower half 3b is a small diameter hole through which the core wire 2' can just pass, making it easy to insert the lead wire. Not only is it easy to push in the lead wire, but the lower end of the sheath is received and stopped just above the lower half 3b, so the pushing of the lead wire is automatically controlled and the protrusion length of the core wire from the bottom surface of the base is controlled automatically. It is possible to maintain a constant level.

In addition, vertical depressions 10 and 11 are provided in the front surface of the receiving surface 8 and the holding piece 7 that faces the receiving surface 8 so as to cross each other, at positions corresponding to the respective holding holes 3, so as to receive part of the lead wire. There is. This depression may not be provided on both the receiving surface and the front surface of the holding piece, but may be provided on either one of them, but by providing the depression in this way, it can be sandwiched between the receiving surface and the front surface of the holding piece. It is possible to reliably prevent the lead wire from shifting along both surfaces.

Although the clip leg 4 is shown as an anchor type in this embodiment, when it is narrowed and pushed into the mounting hole 9 and the bottom surface of the base comes into contact with the top surface of the wiring board, it tries to expand to its original state. Any structure may be used as long as the base can be fixed onto the wiring board.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention; Fig. 1 is a perspective view of the used state, Fig. 2 is a plan view of the molded state;
Figure 3 is a sectional view taken along the same line as above, Figure 4 is a slope view with the lead wire attached, Figure 5 is a slope view with the lead wire installed, and Figure 6 is a perspective view of the lead wire fixed on the wiring board. Figure 7 is a side view of the state in which the core wire of the lead wire is pushed into the wiring hole of the wiring board. In the figure, 1 is the printed wiring board, 1' is the wiring hole,
2 is a lead wire, 2' is its core wire, 3 is a holding hole, 4
5 is a clip leg, 5 is a base body, 6 is a hinge piece, 7 is a holding piece, and 8 is a receiving surface.

Claims (1)

[Claims for Utility Model Registration] Holding holes that penetrate in the vertical direction and accommodate lead wires are arranged in a row between both ends in the same arrangement as the wiring holes in the printed wiring board, and are visible from the bottom side of the printed wiring board. A clip leg that is attached by being pushed into the mounting hole is connected to a protruding base, and a protrusion from one side of each end of the base,
a pair of hinge pieces extending beyond the other side of the base; and a holding piece connecting the tips of the pair of hinge pieces; The retaining piece has a receiving surface that stands upright facing toward the base, and the holding piece can bend the pair of hinge pieces upward and move across the top of the base so that it can face the receiving surface. At the same time, the lower half of each holding hole arranged in a row between both ends of the base has a small diameter so as to pass through the core wire with the sheath removed from the tip of the lead wire. On one or both of the surface and the surface of the holding piece facing this receiving surface, vertical recesses for receiving part of the lead wires to be inserted into each holding hole are arranged in rows in the same arrangement as the holding holes. A fixed support for lead wires.