JPS5939418Y2 - circuit board equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a circuit board device suitable for bonding a circuit board to another circuit board or other object, particularly by using pressure-sensitive conductive rubber or the like.

Connectors have generally been required when coupling printed circuit boards to other printed circuit boards or other circuit devices.

By the way, in order to simplify the connector part, pressure-sensitive conductive rubber has already been placed between one printed circuit board and the other to electrically connect them. Since it is practically difficult to form a printed circuit on the end surface of a printed circuit board, one printed circuit board is arranged orthogonally to the other printed circuit board and bonded with a pressure-sensitive conductive rubber sheet. That was impossible.

For this reason, connectors had to be used when connecting orthogonally.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a circuit board device that can perform electrical coupling using end faces.

To achieve the above object, the present invention includes a circuit board having a hole formed inward from an end surface of the circuit board, and a hole formed in the hole such that a part of the hole is exposed at the end surface of the circuit board. The present invention relates to a circuit board device including an embedded conductive material and a circuit conductor provided on at least one main surface of the circuit board and electrically connected to the conductive material.

According to the present invention, since the conductive material is exposed on the end surface of the circuit board, it becomes possible to connect other circuit boards to electrical devices using this area, making it possible to diversify the connection methods. .

Embodiments of the present invention will be described below with reference to FIGS. 1-J4.

FIG. 1 shows a method of manufacturing a printed circuit board according to the present invention, in which a circuit board 1 that is slightly larger than the final printed circuit board is prepared, and one main surface 2 of the circuit board 1 is marked with diagonal lines for explanatory purposes. In addition to providing a printed circuit conductor 2 shown in FIG.
A circular through hole 5 is provided on the straight line 4 corresponding to the portion that will eventually become the end surface, and solder 6 is applied to this through hole 5 as a conductive material.
embed using the depth method.

Next, the circuit board 1 is cut along a straight line 40 that approximately divides one through hole 5 into two to obtain a circuit board 1a shown in FIG.

The circuit board lad shown in FIG. 2 has a through hole 5a extending inward from its end surface 7, and has solder 6a embedded in the through hole 5a.

Since the through hole 5a communicates from one main surface 2 to the other main surface 8 and is exposed at the end surface T, the solder 6a is also embedded from one main surface 2 to the other main surface 8. , and is exposed on the end surface 1.

Further, the solder 6a is electrically and mechanically coupled to a connecting portion 9 of the circuit conductor 3 formed so as to surround the through hole 5a.

A first printed circuit board 1aII′i configured as shown in FIG. 2, for example, as shown in FIG. .

A pressure-sensitive conductive elastic sheet, ie, a pressure-sensitive The conductive rubber sheet 14 is arranged, and the main surface 11 of the second printed circuit board 10 is held by the holding member 15.
The first printed circuit board 1a is pressed against the first printed circuit board 1a to couple them together.

In this embodiment, the connection 1 of the second printed circuit board 10
Since the 3Fi circuit conductor 12 is configured with a raised part 16 made of solder, the part of the conductive rubber sheet 14 corresponding to the raised part 16 is pressed, and this pressed part becomes electrically conductive. , the solder 6a of the first printed circuit board 1a and the connecting portion 13 of the second printed circuit board 10 are electrically coupled.

Therefore, according to this embodiment, the first printed circuit board 1a can be mounted and electrically connected orthogonally to the second printed circuit board 10 without using a special complicated and expensive connector. It becomes possible to do so.

In addition, when the pressure-sensitive conductive rubber sheet 14 is interposed, VcI
I'i, Even if the angle of the first printed circuit board 1a with respect to the second printed circuit board 10 is arbitrarily selected, the two can be electrically coupled via the solder 6a exposed on the end surface 7. I can do it.

Although the embodiments of the present invention have been described above, the present invention is not limited thereto and can be further modified.

For example, as shown in FIG. 5, the solder 6a may be made to protrude from the end face I, and this may be used as a protrusion that presses the conductive rubber sheet 14.

Alternatively, as shown in FIG. 6, the circuit conductor of the connecting portion 13 of the second printed circuit board 10 may be made to protrude, and this portion may be used as a raised portion for suppression.

It is also applicable to cases where a transistor, an IC, etc. are coupled in place of the second printed circuit board 10.

Further, instead of the solder 6a, a metal rod or the like may be inserted into the through hole 5a.

[Brief explanation of drawings]

FIG. 1 is a front view showing a method for manufacturing a printed circuit board device according to an embodiment of the present invention, FIG. 2 is a perspective view showing a part of the printed circuit board manufactured by the method shown in FIG. 1, and FIG. The figure is a perspective view schematically showing the coupling structure of the first and second printed circuit boards, and FIG. 4 is a partially enlarged sectional view of FIG. 3. FIGS. 5 and 6 are cross-sectional views showing modified examples of the coupling mechanism for the first and second printed circuit boards. In the symbols used in the drawings, 1a is a first printed circuit board, 5aij is a through hole, 6a is solder, 7 is an end surface, and 10 is a second printed circuit board. 14 is a pressure-sensitive conductive rubber sheet.

Claims (1)

[Claims for Utility Model Registration] A circuit board having a hole formed inward from an end surface of the circuit board, and a hole embedded in the hole so that a part of the hole is exposed on the end surface of the circuit board. A circuit board device comprising: a conductive material; and a circuit conductor provided on at least one main surface of the circuit board and electrically connected to the conductive material.