JPH0113239B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a connection terminal for a printed wiring board for wiring a circuit mounted on the printed wiring board with an electric wire.

[Technical background of the invention]

Conventionally, when wiring using electric wires (jumper wiring, etc.) on a printing unit, there have been various methods as described below. In other words, as shown in FIG. 1, a pin 2 is placed on a printed wiring board 1 and an electric wire 3 is wrapped around the pin 2 using a wire wrap machine for wiring, and a hole 4 provided in the printed wiring board 1 for jumper wiring is used. and a method of wiring by soldering the electric wire 3 to the land part,
Or parts on the front or back side of the printed wiring board 1,
For example, wire 3 directly connects lead 6 of IC (integrated circuit) 5.
This is a method of soldering.

[Problems with background technology]

However, the above conventional method has the following drawbacks. That is, the method of pin-standing and drilling holes for jumper wiring requires pattern design of the printed wiring board 1 for jumper wiring;
It was necessary to drill holes in lands and conduct pattern wiring from the points to be connected, making it unsuitable for high-density component mounting and pattern wiring. In addition, with the method of directly connecting jumper wiring to component leads, if a component needs to be replaced due to a component defect, etc.
It was necessary to remove all the jumper wiring from the parts, and after replacing the parts, it was necessary to solder the component leads and solder the jumper wiring twice, resulting in extremely poor workability.

[Purpose of the invention]

This invention was made in view of the above circumstances.
The purpose of this is to eliminate the need to design patterns for printed wiring boards for jumper wiring, enable high-density component mounting and pattern wiring, and improve work efficiency when replacing parts. The purpose of the present invention is to provide a connection terminal for a board.

[Summary of the invention]

The present invention has an insertion part that is inserted into the same hole as a hole for inserting a lead of a component provided in a printed wiring board, and a wire connection part for connecting the lead of another component with an electric wire. and a connection terminal for a printed wiring board having an insertion tab portion which is separated from the wire connection portion after insertion, and thereby connects the leads of the component via the connection terminal.

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to the drawings. FIG. 2 shows a printed wiring board 12 on which wiring is carried out using the connection terminal of the present invention (the figure shows the connection terminal 11 with the insertion tab section separated). The connection terminal 11 is a conductive component, for example, IC1.
The lead 14 is inserted into the hole 15 into which the lead 14 of No. 3 was inserted.
It is inserted with. The connection terminals 11 are interconnected by electric wires 16. FIGS. 3 and 4 are partial cross-sectional views seen from the directions of arrows A and B shown in FIG. 2, respectively.

As shown in FIG.
Hole 1 for passing the electric wire 16 is provided in b for easy wiring.
7 and a semicircular groove 18 are formed.

That is, when wiring is performed using this connection terminal 11, the insertion portion 11a of the connection terminal 11 is inserted into the same hole as the hole 15 for inserting the lead of the IC 13 mounted on the printed wiring board 12. Then, solder 19 is applied from the back side of the printed wiring board 12. Thereby, the leads 14 of the IC 13 and the connection terminals 11 can be reliably connected and fixed to the printed wiring board 12. After that, the inserted connection terminal 1
One end of the electric wire 16 is wound around the hole 17 and groove 18 of one IC 13 and soldered 20, and the other end of this electric wire 16 is connected to the same hole 15 as the lead 14 of the other IC 13.
Hole 17 and groove 1 of connecting terminal 11 inserted in
8 and solder 20. This allows the leads 14 of different ICs 13 to be connected via the connection terminals 11.

Since the diameter of the through hole 15 of the printed wiring board 12 is small, the connection terminal 11 shown in FIG. 5 may be bent when inserted. Furthermore, if the mounting density of the IC 13 or the like is high, it will be difficult to insert the fingers into the IC 13, which will reduce work efficiency.

In FIG. 6, reference numeral 21 indicates the connection terminal before the insertion tab part is separated, which improves the ease of inserting the connection terminal 11 into the lead insertion hole 15 shown in FIG. 5 above and the workability. In order to
An insertion tab portion 22 is provided on the top. A notch 23 is formed between the insertion tab portion 22 and the wire connection portion 11b, and the two can be easily separated by bending the tab portion 22 after inserting the connection terminal 21. ing. That is, this connection terminal 21 has an insertion tab portion 22, and after inserting the insertion portion 11a into the lead insertion hole 15, the insertion tab portion 22 is bent and the insertion tab portion 22 is separated. After that, wiring can be performed in the same manner as for the connection terminal 11 described above. Considering the manufacturing cost of the connection terminal 21, it is preferable to form a terminal consisting of the wire connection part 11b and the insertion part 11a above and below the tab part 22.

In the method of performing jumper wiring using the connection terminals 11 and 21, the following effects can be obtained. That is, there is no need for pattern design of the printed wiring board 12 for jumper wiring (land and hole drilling, pattern wiring from leads of components to be connected),
High-density component mounting and pattern wiring become possible. In addition, even if a design change etc. occurs, it can be easily accommodated by additionally inserting the connecting terminals 11, 21 into the component lead part and wiring.
Component lead and connection terminal 1 in one soldering operation
1 and 21 can be soldered.

If a part needs to be replaced due to a failure of a part in the jumper wiring section, etc., at the same time as removing the part from the printed wiring board 12,
1 and 21 can also be removed without separating the terminals 11 and 21 and the electric wire 16. After the parts are replaced, the connection terminals 11 and 12 with the electric wires 16 are returned to their original positions and the soldering operation is performed once, thereby allowing the repair to be the same as before the parts were replaced. Therefore, the number of man-hours required for assembling and changing the printing unit can be reduced.

In the above embodiment, the connection terminals 11 and 2
Although we have explained how to use 1 for jumper wiring, since holes 17 and grooves 18 are formed in the wire connection part 11b, it can also be used as a check terminal during circuit function inspection or testing/adjustment. be.

〔Effect of the invention〕

As described above, according to the present invention, in the connection terminal for a printed wiring board, since the insertion tab part that is separable from the wire connection part is integrally provided on the wire connection part, the insertion work is easy. It is possible to provide a connection terminal for a printed wiring board that is easy and allows high-density component mounting by separating the insertion tab portion from the wire connection portion after insertion.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing a conventional jumper wiring method, FIG. 2 is a perspective view showing a jumper wiring means according to an embodiment of the present invention, and FIGS. 3 and 4 are arrows A and 4 in FIG. FIG. 5 is a partial cross-sectional view as seen from direction B, FIG. 5 is a perspective view showing the connection terminal after the insertion tab used in the jumper wiring means is separated from the wire connection portion, and FIG. 6 is an embodiment of the present invention. FIG. 2 is a perspective view showing a connection terminal according to the invention. 11... Connection terminal, 12... Printed wiring board, 13
...IC, 15...Lead.

Claims (1)

[Scope of Claims] 1. It has a shape that fits into a gap between a through hole provided in a printed wiring board and a lead of a mounted component inserted into the through hole, and is inserted into the through hole together with the lead of the mounted component. an insertion portion that is configured integrally with the insertion portion, and that should protrude from the through hole and be electrically connected to the component lead when the insertion portion is inserted into the through hole. an electric wire connection part to which an electric wire is fixed; and an insertion tab part that is separably integrated with the electric wire connection part and is separated from the electric wire connection part after the insertion part is inserted into the through hole. A connection terminal for a printed wiring board, characterized by having the following. 2. The connection terminal for a printed wiring board according to claim 1, further comprising cut portions at both ends of the boundary between the insertion tab portion and the wire connection portion. 3. The insertion is performed so that a recess is formed in the wire connection portion to prevent the wire electrically connected to the component lead from shifting when the insertion tab portion is separated from the wire connection portion. The connecting terminal for a printed wiring board according to claim 1, further comprising a central hole at the center of the boundary between the wire tab portion and the wire connecting portion.