JPS60189287A - Position fixing device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION 1. Field of Industrial Application The present invention relates to a position fixing device for fixing a member to be fixed in position, such as a position fixing device for fixing a lead wire to a printed circuit board.

2. Prior Art First, conventional means for connecting lead wires to a printed circuit board will be explained. A wiring board made of copper foil or the like is provided on the printed circuit board, and this wiring board has through balls into which lead wires of each element provided on the printed circuit board are inserted. The lead wires of each element are inserted into these through holes and soldered to electrically connect each element to the wiring board, fulfilling the electrical role required of this printed circuit board. . today,
Devices that require printed circuit boards are becoming more and more complex.
It is rare that a single printed circuit board is required, but tens or even hundreds of boards may be required. The printed circuit boards on which each element is arranged do not function independently, but are closely related to each other, and it is only when they are all electrically connected that the device can fulfill its required role. Become. Therefore,
Wiring must be done to electrically connect the printed circuit boards or the printed circuit boards and other components.

Conventional wiring means insert lead wires into through holes provided on a printed circuit board and perform wiring by soldering. However, simply inserting the lead wire into the through hole does not fix the lead wire to the printed circuit board. Therefore,
When taking out a large number of lead wires from a printed circuit board, if you insert all the lead wires into the through holes and solder all the lead wires at once, some of the lead wires will always come out of the through holes. Therefore, it was not possible to use such a method. With this method, there was no alternative but to insert one of the lead wires into the through ball of the printed circuit board and perform the subsequent soldering, which was repeated for all the lead wires.

Therefore, it took a lot of effort and was very inefficient.

Therefore, in order to solve the above-mentioned problems, a method was developed in which a terminal for connecting to a printed circuit board is provided at the tip of the lead wire. For example, one end of a tapered connection terminal is connected to a lead wire by soldering or caulking, and the other end is inserted into a hole in a printed circuit board. The connecting terminal has a tapered shape, and by being inserted into the through hole, the connecting terminal is fixed to the printed circuit board to some extent, and even if the printed circuit board is moved, the connecting terminal will not come out from the through hole. Therefore, if you insert the required number of connection terminals with lead wires connected into the printed circuit board and immerse the wiring board side of the printed circuit board in a solder bath, you can solder all the connection terminals at once. Become. This means is much more efficient than the above-mentioned means of individually soldering the lead wires.

However, with this method, the necessary lead wires and connection terminals had to be connected by soldering or caulking before inserting the connection terminals into the printed circuit board, which required a considerable amount of time. .

3. Purpose of the invention The present invention was made in consideration of the above problems, and
It is an object of the present invention to provide a position fixing device that can easily and quickly fix a member to be fixed in position, such as a lead wire.

4. Structure of the Invention That is, the present invention has an insertion holding part that fixes the position of a member to be fixed while being inserted therethrough, and a crimping means that elastically deforms when the member is inserted to press and hold the member. This relates to a position fixing device characterized by being provided with.

5. Examples Hereinafter, examples of the present invention will be described in detail using the drawings.

FIG. 1 is a partial plan view of a holding member l that holds a lead wire. This holding member 1 is made of a heat-resistant synthetic resin, such as polybutylene terephthalate, nylon resin, etc., and has holes 2 for inserting lead wires, for example, 4 holes.
0 array. Each of the holes 2 is provided with a crimping member 3 for crimping the lead wire. FIG. 2 is an overall perspective view of this fixing member 1, and FIG. 3 is a perspective view of the first fixing member 1.
It is a sectional view of the X-axis of a figure. Both sides of the crimp member 3 are provided with < 1ljll as shown in FIGS. 1 and 2,
The pressure bonding member 3 and the holding member 1 are connected by a thin supporting portion 4, as shown in FIG. The crimping members 3 in the two holes into which the lead wires are inserted have a sawtooth shape as shown in the enlarged cross-sectional view of FIG.
, 3B, and 3C become higher in this order. Therefore, the hole 2 into which the lead wire is inserted is formed to become gradually narrower as viewed from the plan view of FIG.

A case in which a lead wire is inserted into the holding member 1 configured as described above will be described next. The lead wire 6, the cross section of which is shown in FIG.
5 is provided, and when inserted into the hole 2 of the holding member 1, a certain length determined by a printed circuit board etc.
Covering layer 5 must be removed. And coating layer 5
If the portion of the lead wire 6 from which the lead wire 6 has been removed is treated with solder plating or the like so that it can be easily soldered to the wiring board on the printed circuit board, work efficiency will be increased. This solder plating can be carried out by simply immersing a large number of lead wires 6 from which a certain length of the coating layer 5 has been removed into a solder bath, and does not cause a decrease in work efficiency. Further, when the lead wire 6 is made of a bundle of thin wires, solder plating can prevent the individual thin wires from coming apart and increase the mechanical strength. This means that lead wire 6
This helps to facilitate the insertion of the through hole provided in the printed circuit board.

A case will be described in which the lead wire 6 treated as described above is inserted into the hole 2 provided in the holding member l. Fifth
The figure is a sectional view showing an initial state in which the lead wire 6 is inserted into the hole 2. A part of the outer peripheral surface of the coating layer 5 of the lead wire 6 is guided by the inner wall surface IA of the hole 2, so that the lead wire 6 is inserted into the hole 2 almost vertically. As described above, each edge of the crimping member 3 is raised in the order of 3A, 3B, and 3C, and the end 5A of the coating layer 5 of the lead wire 6 does not reach the edge when passing through the edge 3A. 3A, but when passing through edge 3B, it comes into contact with the oblique side of edge 3B.

If the end portion 5A and the oblique side of the edge 3B contact, the crimping member 3
is integrated with the holding member 1 by a thin supporting portion 4, and when pressed by the end portion 5A, the crimping member 3 rotates slightly in the direction of arrow A about the supporting portion 4. . Here, the outer peripheral surface of the coating layer 5 of the lead wire 6 is
It passes through this part while contacting the edge 3B, and also passes through the edge 3C part in the same process as described above. The outer circumferential surface of the coating layer 5 of the lead wire 6 is guided by the inner wall surface IA of the hole 2, so the lead wire 6 is not inserted perpendicularly into the hole 2, and there is a risk that the tip thereof may be bent. However, if the crimping member 3 is provided in the hole 2 and the edges 3A, 3B, and 3C are brought into contact with the outer peripheral surface of the coating layer 5 depending on the insertion stage of the lead wire, the pressing force of each edge will cause the lead to This serves as a guide to prevent the wire 6 from bending and breaking in the direction of the crimp member 3. As shown in Figure 5,
When the lead wire 6 is inserted, the crimping member 3 is moved in the direction of the arrow by coming into contact with the covering N5 of the lead wire 6,
After insertion, it will be in a slightly inclined state as shown in FIG.

When the lead wire 6 is inserted, the support part 4 that mainly supports the crimp member 3 is elastically deformed, but the holding member 1 is made of a material with a high elastic modulus such as polybutylene terephthalate or nylon resin. If a force is applied in the direction of the arrow in the figure, a repulsive force will act in the opposite direction to arrow A.

Therefore, as shown in FIG. 6, when the lead wire 6 is inserted into the hole 2 provided in the holding member l, the crimping member
is opposite to the arrow A shown in FIG. 5, that is, the force is acting on the lead wire 6 side. As a result, each edge 3A, 3B, 3C of the crimp member 3 presses the coating layer 5 of the lead wire 6 and bites into it a little.

Therefore, even if a force is applied to the lead wire 6 in the direction opposite to that at the time of insertion, each edge of the crimp member 3 bites into the MN 5 to prevent the lead wire 6 from coming off from the hole 2. That is, the crimp member 3 serves as a guide for inserting the lead wire 6 along the inner wall surface IA of the hole 2, and also holds the lead wire 6 after insertion and prevents it from coming off from the hole 2. That's what I'm doing. Therefore, the lead wire 6 is simply inserted into the hole 2 and held without being soldered or caulked to the holding member 1. Since the lead wire 6 is inserted along the inner wall surface IA of the hole 2, its tip does not bend and faces in a fixed direction, making it easy to insert the through pole 12 provided on the printed circuit board 7 as shown in FIG. can penetrate. By simply inserting the required number of lead wires 6 into the holes 2 of the holding member 1, each lead wire 6 is held by the holding member 1, and each tip of the lead wire 6 is oriented in a predetermined direction to prevent misalignment. is less likely to occur. Therefore, the tip of each lead wire 6 can be easily inserted into the through hole 12 provided in the printed circuit board 7.

FIG. 7 is a partial plan view seen from the Y-axis direction of FIG. 6, and the lead wire 6 is not inserted into the hole 2 on the end side of the holding member 1. This hole 2 is connected to the holding member 1 as shown in FIG.
and a printed circuit board 7 by a fixing member 8. The fixing member 8 is made of phosphor bronze having a high modulus of elasticity, and is manufactured by bending a round rod as shown in FIG.

The tip 8A of the fixing member 8 is pressed when passing through the mounting hole 7A provided in the printed circuit board 7, becomes thinner, and passes through the mounting hole 7A. As shown in FIG. 8, even if the holding member 1 passes through the attachment of the printed circuit board 7, the tip 8A of the fixing member 8
are pressed inward by the printed circuit board 7. The fixing member 8 is made of an elastic body, and a repulsive force is generated at the tip @8A, which applies pressure to the printed circuit board 7. The holding portion JrA1 and the printed circuit board 7 are fixed by these two forces. Fig. 9 is a partial plan view when the lead wire 6 is inserted into the hole 2 of the holding member 1 and the fixing part JAS is attached to the holes 2 at both ends, and Fig. 10 is a partial front view at this time. It is a diagram. The tip of the lead wire 6 inserted into the hole 2 of the holding member 1 passes through a through hole 12 provided on the wiring board 9 of the printed circuit board 7, and the holding member 1 is fixed to the printed circuit board 7 by the fixing member 8. It shows that Note that the hole provided in the holding member 1 into which the lead wire 6 is inserted and the hole into which the fixing member 8 is inserted are not different in shape but have the same shape. This makes it possible to cut the long holding member 1 appropriately according to the number of lead wires 6 required and use it freely, greatly increasing the versatility of the holding member 1.

That is, there is no need to create special holding members 1 according to the number of lead wires 6, and the cost is also reduced.

As shown in FIG. 10, when the tip of each lead wire 6 passes through the through ball 12 provided on the printed circuit board 7 and the holding member 1 and the printed circuit board 7 are fixed by the fixing member 8, the leads are The wire 6 must be soldered to the wiring board 9 provided on the printed circuit board 7. Each lead wire 6 is held by a holding member 1, and this holding member 1 is fixed to a printed circuit board 7, so that the tip of each lead wire 6 does not come out of the through hole 12. Therefore,
By simply dipping the wiring board 9 side of the printed circuit board 7 into a solder bath, the tips of each lead wire 6 and each wiring board 9 can be reliably soldered. FIG. 11 is a partial sectional view when soldering is completed, and the tip of each lead wire 6 and the wiring board 9 are connected to the solder 1
electrically connected by 0.

As is clear from the embodiments described above, by using this holding member 1, it is not possible to individually solder each lead wire to the wiring board of a printed circuit board or use connection terminals as in the conventional example. Therefore, each lead wire 6 can be easily soldered to the wiring board 9 of the printed circuit board 7,
The work efficiency was significantly increased.

Note that the present invention can be further modified based on its technical idea.

For example, the shape of the hole 2 provided in the holding member 1 may also be changed. Note that FIG. 15 is a plan view of FIG. 14. Further, in the above embodiment, the lead wire was used as an example of the member to be fixed in position, but the present invention can also be applied to fixing a member such as a rod.

6. Effects of the Invention As described above, according to the present invention, a member to be fixed in position is inserted into the insertion holding part, and the crimping means that elastically deforms when the member is inserted, holds this member. Crimp and fix the position. Therefore, the member can be fixed in position without using means such as soldering or caulking.
It becomes possible to save the time and materials required for these, improving work efficiency and reducing costs.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, in which FIG. 1 is a partial plan view of a holding member, FIG. 2 is a perspective view of the holding member, FIG. 3 is a cross-sectional view of the X-axis in FIG. 1, FIG. 4 is an enlarged sectional view of the crimping member, FIG. 5 is a sectional view showing when the lead wire is inserted into the holding part, FIG. 6 is a sectional view showing when the tip of the lead wire passes through the through hole, Fig. 7 is a plan view of Fig. 6, Fig. 8 is a sectional view when the holding member and the printed circuit board are fixed by the fixing member, and Fig. 9 shows the case where the lead wire and the fixing member are inserted into the holding member. FIG. 10 is a front view of FIG. 9, FIG. 11 is a partial sectional view showing the lead wire soldered to the wiring board of the printed circuit board, FIG. 12, FIG. 13, FIG. 14, FIG. 15 is a diagram showing a modified example. Regarding the symbols used in the drawings, ■---
Holding member 2 - Hole 3 - - Crimping member 3 A, 3 B, 3 G - - Enoji 4 ----
Supporting part 5 --- Covering layer 6 --- Lead wire 7 --- Printed circuit board 8 --- A fixing member. Agent: Patent attorney Hiroshi Aisaka (and 1 other person) Figure 1 Figure 9 Figure 10

Claims (1)

[Claims] (8) It has an insertion holding part that fixes the member to be inserted and held in position, and is provided with a crimping means that elastically deforms when the member is inserted and holds the member crimped. position fixing device.