JPS5927623Y2 - Prototype wiring board - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a trial wiring board that allows trial wiring to be carried out quickly and reliably.

Conventionally, when wiring a prototype IC circuit, etc., a soldering type or wire wrap type IC socket was inserted into a universal perforated wiring board, the necessary IC was inserted into this, and each pin of the IC socket was soldered between each pin. Alternatively, a method was used in which the wires were connected one after another by wire wrapping.

However, with this wiring method, when connecting each pin, a series of operations such as cutting the lead wire to the required length, peeling off the skin at both ends, and then soldering or wire wrapping are repeated. However, there was a problem in that it required a great deal of effort and time.

Therefore, in view of the above problems, Figures 1 and 2
A prototype wiring board in which wiring is carried out by a press-fitting method as shown in the figure has already been devised.

In the figure, 1 is a wiring board provided with a plurality of through holes 1C, 2 is a special connection pin in which a socket part 2a and a press-fit contact 2b in which a press-fit groove 2C is formed are integrally molded.
The socket portion 2a of this special connection pin 2 is inserted and held in the through hole 1C of the wiring board 1, and the press-fit contact 2a is inserted into the through hole 1C of the wiring board 1.
b protrudes above the wiring surface 1b of the wiring board 1.

3 is an I whose pin 3a is inserted into the socket part 2a of the special connection pin 2 and assembled on the component surface 1a side of the wiring board 1.
C14 is a lead wire that connects each special connection pin 2, and 5 is a wiring pen that feeds out the lead wire 4. At the rear end of this wiring pen 5, a wire reel 5a around which the lead wire 4 is wound is attached.

This type of prototype wiring board has special connection pins 2 on the wiring board 1.
The pins 2 are connected to each other by pushing the lead wire 4 drawn out from the wiring pen 5 into the press-fitting groove 2C of the pin 2.

Then, when the lead wire 4 is pushed into the press-fitting groove 2C of the pin 2, the covering is peeled off, so that the electrical and mechanical connection between the lead wire 4 and the pin 2 is established at once.

On the other hand, an element 3 such as an IC is assembled into the wiring board 1 by inserting its pin 3a into the socket portion 2a from the component surface 1a side of the wiring board 1.

At this time, the lead wires 4 run vertically and horizontally on the wiring surface 1b side of the wiring board 1 opposite to the component surface 1a.

In the conventional prototype wiring board as described above, when press-fitting a plurality of lead wires 4 into the press-fit groove 2C of one pin 2, or when redoing and correcting wiring, etc., the press-fit contact of the pin 2 is
This has the disadvantage that the spring properties of b are impaired and connection stability is reduced.

Therefore, it was almost impossible to use it in an environment involving mechanical vibration and thermal shock.

Further, when checking the connection after wiring is completed, the printed characters such as pin numbers written on the wiring surface 1b of the wiring board 1 are buried under the lead wires 4, making it difficult to identify them.
It took a lot of time to adjust the test.

This invention was developed to eliminate the above-mentioned drawbacks of the conventional ones. By attaching a holding plate to the wiring side of the wiring board, the connection points are stabilized and printed characters such as pin numbers can be printed. The purpose is to provide a prototype wiring board that can be easily identified.

An embodiment of the present invention will be described below with reference to the drawings.

3 and 4 show a prototype wiring board according to an embodiment of the present invention.

In the figure, the same reference numerals as in FIGS. 1 and 2 indicate the same parts, and 6 is a preferably transparent holding plate having a plurality of through holes 6a that fit with the press-fit contacts 2b of the special connecting pin 2. On the surface of the holding plate 6, inscriptions 7 such as pin numbers, IC numbers, mounting positions, IC names, etc. are made to facilitate testing and adjustment.

Next, its effect will be explained.

First, wiring is performed by press-fitting the lead wire 4 into the press-fitting groove 2C of the special connection pin 2 in the same manner as shown in FIG.

Thereafter, the press plate 6 is fitted into the through hole 6a so that the press-fit contact 2b of the special connection pin 2 is inserted.

At this time, the diameter of the through hole 6a of the holding plate 6 is formed to be slightly larger than the width of the press-fit contact 2b of the special connecting pin 2, and as shown in FIG. When pushed in, the press-fit groove 2C of the press-fit contact 2b is narrowed and the lead wire 4 is tightened.

As a result, the springiness of the special connection pin 2 is reinforced, and its connection stability is significantly improved.

A holding plate 6 is similarly attached to the special connection pin 2 in which other ICs are incorporated.

Further, since the holding plate 6 is transparent, the wiring on the wiring board 1 can be checked with the holding plate 6 attached.

The test adjustment can be performed using each notation 7 written on the holding plate 6.

According to the prototype wiring board of this embodiment having the above-described structure, the spring properties of the special connection pins 2 are reinforced by the holding plate 6, so that the stability and reliability of the connection points can be easily improved. Therefore, it becomes possible to insert a plurality of lead wires 4 into one special connection pin 2 or to use the special connection pin 2 repeatedly.

Furthermore, by ensuring the connection, environmental resistance against mechanical vibration, thermal shock, etc. is improved, so the press-fit type wiring board can be used not only for circuit trial production but also for wiring semi-finished products.

Furthermore, pin numbers are printed on the surface of the transparent presser plate 6.

Since the IC number etc. are written, it becomes extremely easy to check the connection and test and adjust after wiring is completed.

However, it is clear that the holding plate 6 functions as a wiring holding member between the special connection pins 2.

Moreover, the holding plate 6 can be realized with an inexpensive insulating plate, and can be manufactured extremely economically.

Although the holding plate in the above embodiment was attached to each IC, one holding plate may be attached to the entire wiring board, and the same effect as in the above embodiment can be obtained. I can do it.

Furthermore, in the above embodiment, a case was explained in which a fork-shaped pin was used as a press-fit contact, but the connection stability of the prototype wiring board according to the present invention can be sufficiently ensured even if the springiness of the press-fit contact is weak to some extent. In addition to the fork-shaped pin, for example, a cylindrical pin with a plurality of press-fit grooves may be used, and as a result, the degree of freedom in selecting the pin shape can be improved.

As described above, according to the present invention, a press-fitting contact of a socket pin protruding from the wiring surface of a wiring board is fitted with a presser plate having a through hole, so that prototype wiring with high connection stability can be quickly and reliably assembled. This has the effect of providing a prototype wiring board that can be easily tested and adjusted after wiring is completed.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a conventional prototype wiring board, FIG. 2 is a sectional view of FIG. 1, FIG. 3 is a sectional view of a prototype wiring board according to an embodiment of the present invention, and FIG. FIG. 1...Wiring board, 1C...Through hole, 2
...Special connection pin (socket pin), 2a...
...Socket part, 2b...Press-fit contact, 3...IC (element), 3a...Pin, 6...Press plate, 6a... ...Through hole. In the drawings, the same reference numerals indicate the same or equivalent parts.

Claims (1)

[Scope of utility model registration request] A wiring board provided with a plurality of through holes, a socket part into which pins of elements to be attached to the wiring board are inserted and held in the through holes of the wiring board, and a socket part provided integrally with the socket part and the wiring board. 1. A prototype wiring board comprising: a socket pin comprising a press-fit contact that protrudes above the wiring surface of the socket pin and holds a lead wire; and a holding plate having a plurality of through holes that fit with the press-fit contacts of the socket pin.