JPH06275974A - Electronic circuit board collective device - Google Patents

Abstract

PURPOSE:To obtain an electronic circuit board collective device wherein signal cables can be lessened in number without changing electronic circuit boards in size and formed in an economical configuration. CONSTITUTION:A relay wiring board 7 of the same size with electronic circuit boards 1a to 1c is mounted in the empty slot of a backboard provided to a rack, and the relay wiring board 7 is equipped with a wiring connector 9 connected to a signal cable, a wiring edge connector 8 connected to the backboard of the rack, and printed wirings 10 to 12 through-connected between the wiring connector 9 and the wiring edge connector 8. The wiring edge connector 8 is through-connected to the edge connectors 6a to 6c of the electronic circuit boards 1a to 1c through the intermediary of wirings 41 to 43 provided inside the rack, and the output signals of the electronic circuit boards 1a to 1c are collectively transmitted to the wiring connector 9 of the relay wiring board 7.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic circuit board assembly apparatus constructed by mounting a plurality of electronic circuit boards on a modem rack or a control rack of a computer, and particularly to a signal cable for input / output to / from the electronic circuit board. The present invention relates to an electronic circuit board assembly device capable of reducing the number of

[0002]

2. Description of the Related Art Generally, an electronic circuit board assembly device constituting a modem rack, a control rack or the like comprises a plurality of electronic circuit boards each having an electronic circuit mounted thereon, and a rack mounting a plurality of electronic circuit boards. , Each electronic circuit board has a connector to which a signal cable from the outside is connected and an edge connector to be connected to a slot of a backboard of the rack, and the rack has a wiring line for through-connecting the slots. ing.

FIG. 4 is a plan view schematically showing one electronic circuit board which constitutes a conventional electronic circuit board assembly apparatus. In FIG. 4, 2 is an electronic circuit mounted on the electronic circuit board 28, and 3 is an electronic circuit board. Is an input connector 4 provided on the electronic circuit board 28 to which an external input signal cable 26 is connected.
Is an output connector provided on the electronic circuit board 28 to which the output signal cable 27 from the outside is connected, and 30 is an edge provided on the electronic circuit board 28 and connected to a slot of a backboard of a rack (not shown) It is a connector. The edge connector 30 has a plurality of electrodes connected to the wiring inside the rack.

In this case, the electronic circuit board 28 is provided with, for example, only one modulation / demodulation device as the electronic circuit 2 and constitutes a so-called card modem. Further, the electronic circuit 2 on the electronic circuit board 28, the input signal cable 26 and the output signal cable 27 are connected via the respective connectors 3 and 4.

FIG. 5 shows a state where a plurality of (28a to 28c) electronic circuit boards 28 of FIG. 4 are combined and mounted on a modem rack (not shown) to form a collective modem rack together with the electronic circuit boards 28a to 28c. FIG. In this case, the electronic circuit board 2 as each card modem
8a to 28c corresponding to the number of input signal cables 26a to
26c and output signal cables 27a to 27c are provided.

Normally, the external signal cables 26 and 27 are artificially wired, so increasing the number of signal cables as shown in FIG. 5 requires a lot of labor. Therefore, for example, as described in Japanese Patent Publication No. 4-26238,
Electronic circuit boards have been proposed that can realize economical signal cable configurations.

FIG. 6 is a plan view schematically showing the electronic circuit board described in the above publication, and 2 to 4 and 30 are the same as those described above. Further, 29 corresponds to the electronic circuit board 28. A printed wiring 31 connects the electronic circuit 2 and the connector 4 and is also connected to the edge connector 30. 32 and 33 are the connector 4 and the edge connector 3
It is a printed wiring for making a through connection with 0.

FIG. 7 is a plan view schematically showing a state in which a plurality (29a to 29c) of electronic circuit boards 29 of FIG. 6 are combined and incorporated in a rack, and 44 and 45 are arranged on a backboard of the rack. It is a wiring. Each electronic circuit board 29a
Printed wirings 31a to 31c, 32a to 3 on 29c to 29c
2c and 33a to 33c have the same shape for production and dual use.

Both ends of the wiring 44 are connected to the printed wiring 31a on the edge connector 30a of the electronic circuit board 29a and the printed wiring 33c on the edge connector 30c of the electronic circuit board 29c. Moreover, both ends of the wiring 45 are
The printed wiring 31b on the edge connector 30b of the electronic circuit board 29b and the printed wiring 32c on the edge connector 30c of the electronic circuit board 29c are connected.

Further, the output signal cable 27 is connected only to the output connector 4c of the electronic circuit board 29c,
The output signal cable 27 is not connected to the output connectors 4a and 4b of the electronic circuit boards 29a and 29b. Therefore, in order to connect the electronic circuit board assembly device and the output signal cable 27, only one output connector 4c of the electronic circuit board 29c may be used. Therefore, it is possible to economically mount the electronic circuit board on the rack by reducing the number of signal cables.

In this case, the output signal of the electronic circuit 2a on the electronic circuit board 29a is transmitted from the printed wiring 31a to the edge connector 30c of the electronic circuit board 29c via the edge connector 30a and the wiring 44 of the backboard.
Further, it is sent to the output signal cable 27 via the printed wiring 33c on the electronic circuit board 29c and the output connector 4c.

Similarly, the output signal of the electronic circuit 2b on the electronic circuit board 29b is transmitted from the printed wiring 31b to the edge connector 30c of the electronic circuit board 29c via the edge connector 30b and the wiring 45 of the backboard, Further, it is sent to the output signal cable 27 via the printed wiring 32c on the electronic circuit board 29c and the output connector 4c. The output signal of the electronic circuit 2c on the electronic circuit board 29c is sent to the output signal cable 27 via the printed wiring 31c and the connector 4c.

[0013]

As described above, in the conventional electronic circuit board assembly device, when the electronic circuit boards 28a to 28c having no printed wiring as shown in FIG. 5 are used as they are, the input signal cables 26a to 26c and a large number of output signal cables 27a to 27c are required, and it is uneconomical, so that there is a problem that cost reduction cannot be realized.

Further, when the electronic circuit boards 29a to 29c described in Japanese Patent Publication No. 4-26238 are used as shown in FIG. 7, the printed wirings 31a to 33c have the same structure, so that, for example, a large-scale assembly. When configuring a modem rack,
According to the number of modem racks, each of the electronic circuit boards 29a-2
The printed wirings 31a to 33c on 9c are also required in the same number, and the size of the electronic circuit boards 29a to 29c becomes large. Further, in this case, there is a problem that the number of printed wirings cannot be determined unless the number of constituents of the collective modem rack is determined in advance.

The present invention has been made in order to solve the above problems, and even when a large-scale aggregate modem rack or the like is configured, the size of each electronic circuit board is fixed regardless of the number of components. It is an object of the present invention to provide an electronic circuit board assembly device capable of reducing the number of signal cables and enabling an economical cable configuration.

[0016]

An electronic circuit board assembly apparatus according to the present invention comprises a plurality of electronic circuit boards each having an electronic circuit mounted thereon, and a rack for mounting the plurality of electronic circuit boards. The circuit board has a connector to which a signal cable from the outside is connected, and an edge connector to be connected to a slot of a backboard of the rack, and the rack has a wiring for through-connecting the slots, and an electronic circuit. An electronic circuit board assembly device configured by mounting a plurality of boards on a rack and providing a relay wiring board having the same size as the electronic circuit board and mounted in an empty slot of a backboard of the rack. , The relay wiring board connects the wiring connector to which the signal cable is connected, the wiring edge connector connected to the backboard of the rack, the wiring connector and the wiring edge connector through connection And a that the printed wiring, wiring edge connector via a wiring in a rack, in which the through connection to the edge connector.

[0017]

The electronic circuit board assembly device according to the present invention transmits the output signal of the electronic circuit on the electronic circuit board from the printed wiring to the edge connector, and from the edge connector via the wiring on the backboard of the rack. , Through connection to a relay wiring board provided with a large number of through connection print wirings. As a result, the output signals of the electronic circuit boards are collectively sent to the wiring connector provided on the relay wiring board, and sent to the output signal cable through the wiring connector. At this time, the printed wiring to the edge connector on each electronic circuit board is always a fixed number, and even when a large-scale collective modem rack is configured, the size of the electronic circuit board is not changed regardless of the number of configurations. An economical cable configuration can be realized.

[0018]

EXAMPLES Example 1. Embodiment 1 of the present invention will be described below with reference to the drawings. 1 is a plan view schematically showing Embodiment 1 of the present invention, FIG. 2 is a plan view schematically showing an electronic circuit board used in the present invention, and FIG. 3 is a schematic view showing a relay wiring board used in the present invention. FIG.

1 to 3, 2 to 4 and 2a to 4
c, 26, 26a to 26c and 27 are the same as described above. Also, 1 and 1a to 1c, and 6, 6a to 6
c are electronic circuit boards 29 and 29a to 29, respectively.
c, and the edge connectors 30 and 30a to 30c.

In FIG. 1, 41 to 43 are wiring lines provided in a backboard of a rack, and 7 is electronic circuit boards 1a to 1c.
A relay wiring board having the same size as the wiring wiring board connector 8 is provided on the relay wiring board 7. The wirings 41 to 43 connect the edge connectors 6a to 6c to the wiring edge connector 8. A detailed description of the relay wiring board 7 will be given later.

In FIG. 2, reference numeral 5 is a printed wiring for connecting the electronic circuit 2 on the electronic circuit board 1 and the output connector 4, and is also connected to the edge connector 6. In FIG. 3, a relay wiring board 7 having the same size as the electronic circuit board 1 includes a wiring edge connector 8 connected to a backboard of a rack, a wiring connector 9 connected to an output signal cable 27, and a wiring It has print wirings 10 to 18 that connect the edge connector 8 and the wiring connector 9 through.

As shown in FIG. 1, the printed wirings 10 to 12 on the relay wiring board 7 are connected to the edge connectors 6a to 6c of the electronic circuit boards 1a to 1c via wirings 41 to 43 in the rack.
6c is through-connected. The printed wirings 10 to 18 on the relay wiring board 7 are provided by the number of contacts (electrodes) provided on the wiring edge connector 8. Furthermore,
The relay wiring board 7 is mounted in an unused slot on the same rack on which the electronic circuit boards 1a to 1c are mounted.

In this way, the relay wiring board 7 provided with a large number of printed wirings 10 to 18 which are through-connected from the wiring edge connector 8 to the wiring connector 9 is combined with the electronic circuit boards 1a to 1c to form the same rack. When incorporated into
The respective output signals from the electronic circuits 2a to 2c on the electronic circuit boards 1a to 1c are collectively sent to the output signal cable 27 as follows.

First, the electronic circuit 2a on the electronic circuit board 1a
Output signal of the printed wiring 5a and the edge connector 6
Wiring of the relay wiring board 7 which is transmitted to the wiring 41 of the backboard of the rack via a and is routed from the edge connector 6a of the electronic circuit board 1a to the empty slot in the same rack via the wiring 41. Is transmitted to the edge connector 8 for
It is sent to the output signal cable 27 via the printed wiring 12 and the wiring connector 9 on the relay wiring board 7.

Similarly, the electronic circuit 2 on the electronic circuit board 1b
The output signal of b is transmitted to the wiring 42 of the backboard of the rack via the printed wiring 5b and the edge connector 6b,
Via the wiring 42, from the edge connector 6b of the electronic circuit board 1b to the wiring edge connector 8 of the relay wiring board 7
To the output signal cable 2 via the printed wiring 11 and the wiring connector 9 on the relay wiring board 7.
7 is sent.

The output signal of the electronic circuit 2c on the electronic circuit board 1c is the printed wiring 5c and the edge connector 6c.
To the wiring 43 of the backboard of the rack via the wiring 43 and the edge connector 6 of the electronic circuit board 1c via the wiring 43.
c to the wiring edge connector 8 of the relay wiring board 7, and the printed wiring 10 on the relay wiring board 7 is further transmitted.
And is output to the output signal cable 27 via the wiring connector 9.

Thus, the output signal cable 27 connected to the wiring connector 9 of the relay circuit board 7 collectively receives the three output signals from the electronic circuits 2a to 2c on the electronic circuit boards 1a to 1c. Sent out. Therefore, the output signals can be collectively fetched by using only one wiring connector 9.

Further, since a required number of printed wirings 10 to 18 corresponding to the number of electronic circuit boards 1 are collectively arranged on the relay wiring board 7, the electronic circuit boards 1a to 1 are provided.
It suffices that each c individually has a single printed wiring 5a to 5c, and the electronic circuit board assembly device does not become large.

Example 2. In the first embodiment, the case where the number of electronic circuit boards 1 is three (1a to 1c) has been described as an example. However, the printed wirings 10 to 18 for through connection on the relay circuit board 7 are the wiring edge connectors 8 Since there are as many contacts as possible, the wiring edge connector 8
The electronic circuit board 1 can be incorporated by the number of contacts (9). Needless to say, the number of contacts and the number of printed wirings can be set arbitrarily.

At this time, the number of signal cables can be reduced and the electronic circuit board 1 can be economically mounted on the rack regardless of the number of electronic circuit boards 1 incorporated in the rack and without changing the size of the electronic circuit board. can do.

Therefore, when a large number of the same electronic circuit boards 1 are mounted on a rack to form a large-scale aggregate modem rack or the like,
The number of signal cables 26 and 27 for inputting / outputting to / from each electronic circuit board 1 can be significantly reduced regardless of the number of components and without changing the size of the electronic circuit board 1.
An economical structure can be realized.

When the relay wiring board 7 is used, the output connectors 4a to 4c of the electronic circuit boards 1a to 1c are unnecessary, but the output signal cables 27a are individually provided without using the relay wiring board 7. It is configured so that it can be applied to the case of connecting ~ 27c.

[0033]

As described above, according to the present invention, a plurality of electronic circuit boards each mounting an electronic circuit and a rack for mounting the plurality of electronic circuit boards are provided, and each electronic circuit board is externally connected. Has a connector to which the signal cable of, and an edge connector to be connected to the slot of the backboard of the rack, the rack has a wiring for through connection between the slots,
An electronic circuit board assembly device configured by mounting a plurality of electronic circuit boards on a rack, the relay wiring board having the same size as the electronic circuit board and mounted in an empty slot of a backboard of the rack. The relay wiring board has a wiring connector to which the signal cable is connected, a wiring edge connector connected to the backboard of the rack, and a printed wiring for through-connecting the wiring connector and the wiring edge connector. The wiring edge connector is through-connected to each edge connector through the wiring inside the rack, and the output signals of each electronic circuit board are collectively sent to the wiring connector of the relay wiring board. Therefore, a fixed number of printed wiring to the edge connector on each electronic circuit board,
Even when configuring a large-scale aggregate modem rack, the number of signal cables can be reduced without changing the size of the electronic circuit board regardless of the number of configurations, and an electronic circuit that enables an economical cable configuration There is an effect that a substrate assembly device can be obtained.

[Brief description of drawings]

FIG. 1 is a plan view schematically showing a first embodiment of the present invention.

FIG. 2 is a plan view schematically showing one of electronic circuit boards used in Embodiment 1 of the present invention.

FIG. 3 is a plan view schematically showing a relay wiring board used in Embodiment 1 of the present invention.

FIG. 4 is a plan view schematically showing one of electronic circuit boards used in a conventional electronic circuit board assembly device.

FIG. 5 is a plan view schematically showing a conventional electronic circuit board assembly device using a plurality of electronic circuit boards of FIG.

FIG. 6 is a plan view schematically showing one of electronic circuit boards used in another conventional electronic circuit board assembly device.

7 is a plan view schematically showing a conventional electronic circuit board assembly device using a plurality of electronic circuit boards of FIG.

[Description of Reference Signs] 1, 1a to 1c Electronic circuit board 2, 2a to 2c Electronic circuit 3, 3a to 3c Input connector 4, 4a to 4c Output connector 6, 6a to 6c Edge connector 7 Relay wiring board 8 Wiring Edge connector 9 Wiring connector 10-18 Printed wiring 26, 26a-26c Input signal cable 27 Output signal cable 41-43 Wiring

Claims (1)

[Claims] 1. A plurality of electronic circuit boards each mounting an electronic circuit, and a rack for mounting the plurality of electronic circuit boards, wherein each electronic circuit board is a connector to which a signal cable from the outside is connected. And an edge connector connected to a slot of the backboard of the rack, the rack having a wiring for through-connecting the slots, and mounting a plurality of the electronic circuit boards on the rack. In the electronic circuit board assembly device configured as described above, a relay wiring board having the same size as the electronic circuit board and mounted in an empty slot of the backboard of the rack is provided, and the relay wiring board is the Through the wiring connector to which the signal cable is connected, the wiring edge connector to be connected to the backboard of the rack, the wiring connector and the wiring edge connector And a printed wiring for connection, the wiring edge connector, the through wiring in the rack, an electronic circuit board assembly apparatus characterized by being through connected to the each edge connector.