JPS59181098A - Method of connecting cable bewteen printed boards and printed board unit - 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 (a) Technical Field of the Invention The present invention relates to a method for connecting a plurality of printed boards housed in a printed board storage box commonly used in slave devices at the front surface of the printed board storage box. The present invention relates to a method for connecting connection cables and a printed board device used in the method.

(b) Background of the technology In recent years, printed boards have become widely used in electronic equipment due to the miniaturization and high-density packaging of electronic components, and printed board storage boxes that plug-in and accommodate multiple printed boards in parallel have become popular. is often used. In the printed board storage box, electrical connections between the printed boards are generally made through connectors installed at the back of the printed board insertion box, but in recent years, with the increase in circuit conditions, the front side of the printed board storage box has been changed. Also, via the connector provided on the insertion port side of each printed board,
A common connection cable was attached to each printed board using a well-known flat cable to connect electrical signals between the printed boards.

The method of connecting cables between printed boards as described above poses no particular problem when the equipment is in operation, but when adjusting or testing the equipment, it is often necessary to insert and remove the printed boards. It is desirable to make it easier to handle rounded connectors and connection cables, which are troublesome to insert and remove connectors on the front of the box, and flat cables placed on the front of the box, which impede insertion and removal of printed boards.

(C) Prior Art and Problems A conventional connection method for connecting a plurality of printed boards housed in a printed board storage box using a flat cable at the front of the printed board storage box and a printed board device related thereto will be described in the first part. As shown in the figure. In Fig. 1, 1 indicates a plurality of printed boards housed in a storage box 2, of which 1 is a representative one.
The picture is shown in 11.

As shown in the printed board 11, each printed board is placed in a storage box 2.
Guide grooves 3 provided on the inner upper and lower surfaces of the arrow A
A connector 4 is provided on the side edge of the printed board 11 on the side of the insertion port, and is commonly connected to each printed board by a flat cable 6 via a connector 5 facing the connector 4. has been done.

When removing an arbitrary printed board, for example, the printed board 12, the flat cable 6 is located so as to stand in front of the printed board storage box 2.

If you simply remove the connector 8 facing the connector 9 of the printed board 12, the flat cable 6 will get in the way and it will be difficult to pull out the printed board 12.
The connectors 5 and 7 of the flat cable 6 that correspond to the printed circuit boards 11 and 13 adjacent to the connectors 5 and 7 must be removed.

As mentioned above, with the conventional technology, it takes time to insert and remove the printed circuit board, and other connections are constantly needed.

(d) Purpose of the Invention In view of the problems of the prior art as described above, the present invention eliminates the mechanical connector on the printed board insertion slot side.
By using a non-contact optical connection, using an east wire instead of a flat cable, and attaching the connection cable to the side of the front of the printed board storage box so as not to interfere with the insertion and removal of each printed board, printing is possible. The purpose is to facilitate the insertion and removal of plates.

(e) A.6 of the Invention For the above purpose, the present invention provides a printed board that commonly connects a plurality of printed boards that are plugged in and accommodated in a printed board storage box in parallel at the front surface of the printed board storage box. In the cable connection method between the plurality of printed boards, the plurality of printed boards are connected to the common connection cable attached to the side edge of the front surface of the printed board storage box while the plurality of printed boards are housed in the printed board storage box, and each l disposed in the printed board storage box near a predetermined position arbitrarily tangent on the outer edge of the main surface of the printed board.
@ or more light-emitting or light-receiving elements or light-emitting and light-receiving elements and the light-emitting or light-receiving elements or light-emitting and light-receiving elements disposed inside the printed board storage box on the outer edge of the main surface of each printed board 7' (A cable between printed boards that uses optical coupling to transmit and receive electrical signals between each printed board with one or more light-receiving or light-emitting elements or light-receiving and light-emitting elements. A printed board device characterized by arranging one or more light-receiving or light-emitting elements or light-receiving and light-emitting elements at a predetermined position on a main surface outer assembly used in connection with the connection method and this method. By using this, each printed board can be connected by non-contact optical coupling, making it easy to insert and remove the printed board, thereby achieving the above-mentioned purpose.

(f) Embodiments of the Invention Preferred embodiments of the invention will now be described in detail with reference to the drawings. FIG. 2 shows a perspective view of an embodiment of a cable connection method and printed board device using optical coupling in a printed board storage box that accommodates a plurality of printed boards according to the present invention, and FIG. In order to explain the optical coupling section, an example of optical coupling between an optical element on the printed board side and an optical element on the printed board storage box side is shown in a perspective view.

In FIG. 2, reference numeral 1 indicates a plurality of printed boards stored in the printed board storage box 2, and among the plurality of printed boards 1, a printed board 1-1 is an arbitrary number stored in the printed board storage box 2. The printed board 1-2 is shown as an example of an arbitrary Q printed board. As shown in printed board side-2, each printed board has a printed board @l.
Optical coupling holes 56 and 58 are provided on the outer edge of the main surface of the printed board, and opposite thereto, the printed board storage box Hltl is provided with optical coupling portions 55 and 57 on the printed board storage box side, respectively. Optical coupling of printed board 1-2 56.
58, when the printed board 1"-2 is inserted along the printed board guide groove (equivalent to that shown in FIG. 1) provided in the printed board receiving slot 2, the respective holes are inserted.

51 and 53 that fit into the printed board storage box side optical coupling parts 55 and 57 are printed board storage boxes (11j optical coupling parts) facing the printed board side optical coupling parts 52 and 54, respectively.

One or more light-emitting or light-receiving elements or light-emitting and light-receiving elements are arranged in the optical coupling part of each printed board based on the relationship between the printed board circuit and the external circuit. will be established. The plate 1-2 is an example in which the condition requires the largest number of elements, and the optical coupling part 56 has a plurality of light emitting elements (accommodated and arranged (one of them is
The optical coupling section 58 (indicated by 6-1) accommodates a light receiving element. FIG. 3 illustrates the relationship between the optical coupling sections 5B and 57 described above. FIG. 3 shows the optical coupling parts 58 and 57 developed for explanation, and the B side of the optical coupling part 58 of the printed board 1-2 is the 0 side of the optical coupling part 57 on the printed board storage box side. When sliding, 58 becomes the recessed part 57-3 of 57.
It will be inserted into. 5B-1 shown in the optical coupling part 58 is shown as a representative of one of the light receiving elements, and 57-1 shown in the optical coupling part 57 is shown as a representative of one of the light emitting elements. 57-1 and 58-1 face each other and are optically coupled and connected. That is, the electrical signal input to the printed board 1-2 is converted into an optical signal by the light emitting element 57-1 on the printed board storage box 2 side, and is received by the printed board side light receiving element 58-1, and is then sent back to the brush and vaporizer. and is input into the electric circuit of the printed board 1-2.

In the above case and case M, the electrical signal output from the printed board 1-2 is converted into an optical signal by one of the light emitting elements of the optical coupling section 56 of the printed board 1-2, and the printed board facing the light emitting element is converted into an optical signal. The signal is optically coupled to a light receiving element in the optical coupling section 55 on the side of the plate housing mold 2, converted into an electrical signal, and connected to another printed board.

The above-mentioned light-emitting and light-receiving elements, as shown in the examples of FIGS. 3, 57-1 and 58-1, are particularly provided in recessed parts and are arranged separately from the @-connecting elements, so that there is no possibility of misconnection due to light leakage between adjacent elements. The structure is such that it does not occur. Therefore, in the printed board 1-2, for the sake of explanation, the light emitting element and the light receiving element are completely shunted and separated into optical coupling parts 56 and 58, but these elements may be mixed. There are no problems.

As shown in FIG. 2, the optical coupling parts (51, '53, 55, 57, etc.) attached to the printed board storage box 2 are installed along the printed board insertion guide groove on the lower surface of the immersed body of the printed board storage box 2. 57-2 shown in FIG. 3(a) is a notch 9 to avoid the guide groove structure, but the printed board storage box photometric connection part is connected to the housing of the printed board storage box 2. The printed board on the top of the body is inserted into the board. It may be attached to part A in the width direction of the printed board. Needless to say, in such a case, the printed board side optical coupling part is mounted on the printed board facing them.

The input/output connection strings of the connecting parts on the sides of the printed board storage box 2 are taken out to the front of the printed board storage box 2, as shown in the example in Fig. 2, 6.2.63, and connected via a common connection cable 61 made of bundled wires. Connected to other printed boards. Since the common connection cable 61 is arranged at the front side edge of the printed board storage box 2 as shown in FIG. As shown in the example of plate 1-2, it can be inserted and removed freely.

If you take out the print board 1 from the printed board storage box 2 and perform adjustments or tests on the inside of the printed board itself, connect the optical coupling part on the printed board storage box 2 side and the optical coupling part on the printed board 1 side. If the opposing relay optical coupling parts are set separately, an intermediate cable connecting the relay optical coupling parts with a cable is made, and the printed board can be taken out of the printed board storage box 2 via the intermediate cable and the adjustment can be carried out. Can perform testing or repair work.

(Effects of the Invention According to the present invention, when the printed boards of a printed board storage box that accommodates a plurality of printed boards are commonly connected by a connecting cable at the front of the printed board storage box, each printed board and By optically coupling the connection of the printed board storage box, the printed board can be freely inserted and removed without removing the connector of the common connection cable, making it extremely easy to handle the printed boards stored in the printed board storage box. It is possible to easily deal with the requirements for the establishment, adjustment, testing and maintenance of electronic equipment, which has a great effect on shortening the manufacturing process and reducing costs of electronic equipment.

[Brief explanation of the drawing]

In a printed board storage box that stores a plurality of printed boards, a method and a printed board device for interconnecting the printed boards by a common connection cable at the front surface of the printed board storage box, The figure shows the prior art, FIG. 2 shows an example of a cable connection method and printed board device according to the present invention in perspective view, and FIG. 3 shows a printed board storage box and a printed board storage box according to the present invention. This is a perspective view showing one embodiment of the optical coupling structure of the light emitting and light receiving elements arranged. In FIG. 1, L is a plurality of conventional printed boards; 11.
12 and 13 are printed boards shown as representative of the above, 3 is a lint slope insertion/extraction guide groove, 4 and 9 are printed board side connectors used in the conventional printed board cable connection method, 5, 7, and 8 is a common v:: used in the method.
The rice/lid 6 of the connection cable VA1 is a common connection cable using a conventional flat cable. In FIGS. 1 and 2, 2 indicates a printed board storage box, and A indicates the direction of force for inserting each flint board. In FIGS. 2 and 3, 1 shows a number of printed boards as an embodiment of the present invention, and 1-1.1-2 and 1-3 show representative examples of a plurality of printed boards. Especially on printed boards 1
-1.1-2 describes an embodiment of the printed board device according to the present invention, and 52 and 54 refer to the printed board 1'-I KE
56 and 58 indicate the printed board side optical coupling/sound 11 for the printed board 1-2, of which 56- is an example.
1 is a light-emitting element on the printed board 1-2 side, 58-1 is a light-receiving element for print & 1-2 and 11, and 57-1 is a light-emitting element on the side of the printed board storage box facing the light-receiving element 58-1. . 61 is the common connection cable by the East Line, 62 and 63
indicates a lead line from the printed board storage box corresponding to printed board 1-1. FIG. 3 is a perspective view showing the optical coupling section 58 cut into the printed board 1-2 in FIG. Fold,
FIG. 3(a) shows the optical coupling part 57, and FIG. 13(b) shows the optical coupling part 58, and (a) and (bl) are shown rotated by 90 degrees to make it easier to see. .That is, (b
) is in contact with C in (a), and the whole 58 is 5
57 in Figure 3 (b)
-2 is the four parts that escape the protrusion of the printed board insertion/extraction guide hole provided on the printed board 1-2 of the printed board storage box 21 (the entire 57 is attached). Figure 1? Figure 3 on the second bar, Noah, 5 and ε] - ノ' 1-2

Claims (1)

[Claims] (1) In a cable connection method between printed boards in which a plurality of printed boards housed in parallel in a printed board storage box are connected in common at the front surface of the printed board storage box, When the printed board is housed in the printed board storage box, it is connected to a common connection cable attached to the front side edge of the printed board storage box, and is arbitrarily selected on the outer edge of the main surface of each printed board. One or more light-emitting or light-receiving elements or light-emitting and light-receiving elements disposed in the printed board housing box in close proximity to a predetermined position, and a light-emitting or light-receiving element or light emitting and light-receiving element within the printed board housing box. (ζ Optical transmission and reception of electrical signals between each printed board by means of one or more light receiving or UR optical elements or light receiving and light emitting elements disposed on the outer surface of the main surface of the printed board facing each element. Cable connection method between printed boards characterized by connection 0 (2) The cables are plugged in and accommodated in a row in a printed board storage box, and connected by a common connection cable at the front of the printed board storage box. In a plurality of printed boards, the common connection cable is used to optically couple and transmit and receive electrical signals between each printed board while the plurality of printed boards are housed in the printed board storage box. one or more light-emitting or light-receiving elements connected to the printed board storage box and arranged at arbitrarily selected predetermined positions, or the main body of the printed board facing each of the light-emitting and light-receiving elements. A printed board device comprising one or more light-receiving or light-emitting elements or light-receiving and light-emitting elements arranged at predetermined positions on the outer edge of a surface.