JP3078169B2 - Printed circuit board unit - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a printed circuit board unit mainly mounted on a vehicle such as a train as various control devices.

[0002]

2. Description of the Related Art In recent years, control devices for vehicles such as electric trains have been demanded to have high functionality, diversification and multiple functions. In order to realize this, a printed circuit board unit having various kinds of printed circuit boards is installed and used.

[0003] This type of printed circuit board unit is configured, for example, as shown in FIG. That is, a large number of various printed circuit boards 2 are inserted and stored in parallel in a device box 1 of an appropriate size. Each of these printed circuit boards 2
In many cases, the printed circuit board 2 for inputting and outputting signals has a structure in which connectors 3 and 4 are provided at front and rear end faces for reasons such as wiring and ease of maintenance. The rear connector 4 is used for connecting a signal wiring 5 and the rear connector 4 is used for a bus line. That is, by connecting the wiring 5 for input / output signals to each front connector 3 of each printed circuit board 2 via the connection connector 6, the electrical connection between the required printed circuit boards 2 and 2 and the required printed circuit board 2 2 and an electrical component (for example, an interface circuit board (not shown) in the apparatus box 1), and an electrical connection between a required printed board and the outside of the apparatus box.

[0004]

By the way, in such a printed circuit board unit, the number of the printed circuit boards 2 to be incorporated becomes very large due to the demand for high performance, diversification and multifunctionality. Growing
The number of input / output signal wires 5 and the number of connection connectors 6 for connection between boards and for connection to the inside and outside of the device box are greatly increased. Accordingly, there is a problem that the work of connecting and wiring the connectors and the maintenance are troublesome and take much time, and a large wiring space is required, which hinders miniaturization of the entire apparatus.

The present invention has been made in view of the above circumstances, and has as its object to greatly reduce the number of wirings, thereby simplifying and improving the efficiency of connector connection / wiring work and maintenance, and reducing the wiring space. An object of the present invention is to provide a printed circuit board unit capable of reducing the size of the entire apparatus.

[0006]

According to a first aspect of the present invention, there is provided a printed circuit board unit in which a plurality of printed circuit boards having front connectors are inserted in parallel in an apparatus box and housed therein. And a front board on which printed wiring is provided on the back surface of the front cover, and the front board is connected to a front connector of the required printed circuit board to make an electrical connection between the printed circuit boards. It is characterized in that it is provided with a connector.

According to such a configuration, the electrical connection between the printed boards can be made by the front board provided on the back surface of the front cover and the connector provided on the front board. Wiring can be omitted, the number of connector connection wirings can be greatly reduced, connector connection / wiring work and maintenance can be simplified and efficiency can be improved, and the entire device can be downsized by reducing the wiring space.

According to a second aspect of the present invention, in addition to the configuration of the printed circuit board unit according to the first aspect, a relay connector is provided on the front board in a state of being electrically connected to a front connector of a required printed circuit board. And wiring from electrical equipment in the device box.

According to such a structure, in addition to the above-described functions, the connector connection wiring between each printed circuit board and the electric equipment in the equipment box can be simplified, and the wiring work and maintenance can be further simplified and the efficiency can be improved. As a result, the size of the entire device can be reduced by reducing the wiring space.

According to a third aspect of the present invention, in addition to the configuration of the printed board unit according to the first aspect, an external connector is provided on the front board in a state of being electrically connected to a front connector of a required printed board. It is characterized in that wiring from outside the device box is connected to the connection connector.

With such a configuration, in addition to the above-described functions, the connector connection wiring between each printed circuit board and the outside of the apparatus box can be simplified, so that the wiring work and maintenance can be further simplified and efficiency can be improved. The size of the entire device can be reduced due to the reduction in the wiring space.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a first embodiment of a printed circuit board unit according to the present invention will be described.
An embodiment will be described with reference to FIGS. In the figure, the same components as those shown in FIG. 6 described above are denoted by the same reference numerals, and the description will be simplified.

A large number of various printed circuit boards 2 are inserted and accommodated in the apparatus box 1 in parallel. Each of the printed circuit boards 2 has a structure including a front connector 3 for inputting and outputting signals and a rear connector 4 for a bus line for reasons such as wiring and ease of maintenance.

First, a front cover 10 is detachably provided on an open front portion of the apparatus box 1 by a plurality of support rods called posts and fasteners 11 such as screws. A front board (also referred to as a motherboard) 12 is provided on the rear surface of the front cover 10 with a plurality of fasteners 1 similar to those described above.
3 fixedly provided.

The front board 12 is a printed wiring board of a required size and shape, and an electrical connection is formed on the back surface of the front board 12 so as to exchange output signals between the printed boards 2 and between the electric components in the equipment box. Connection connectors 14 that are detachably attached to the required front connectors 3 of the printed circuit board 2 are fixedly provided.

That is, the front cover 10 is positioned and attached to the front portion of the equipment box 1 so that the connectors 14 of the front board 12 on the rear surface are connected to the front connectors 3 of the required printed circuit board 2. Has become.
Thus, the printed wiring provided on the front board 12 and the connection connector 14 attached thereto are connected between the required printed circuit boards 1 without performing individual wiring using the conventional input / output signal wiring 5. The printed circuit board 2 is electrically connected via the input / output signal to exchange input / output signals.

A relay connector 15 is fixedly provided at the upper end of the rear surface of the front board 12. The relay connector 15 is provided between the required printed circuit board 2 and the device box 1.
It is for making an electrical connection with an electrical component (for example, an interface circuit board, not shown) inside the device box 1, and is connected to a front connector 3 of a required printed circuit board 2 which needs to be connected to the electrical component in the device box 1. Each connector 14 is electrically connected to a printed circuit board of the front board 12. Wirings 17 from electrical components in the device box 1 are collected and connected to a connection connector 16 which is detachably connected to the relay connector 15 in a male and female pair. This wiring 1
7, a flat cable is used.

Thus, the required printed circuit board 2 and the electrical components in the equipment box can be separated from the printed wiring provided on the front board 12 without the individual wiring by the conventional input / output signal wiring 5 and the printed wiring. Is electrically connected to the connector 14 and the relay connector 15 attached to the printer 1 via the connector 16 and the wiring 17, so that input / output signals can be exchanged between the printed circuit board 2 and the electrical components in the device box. It has become.

The front cover 10 (which may include the front board 12) has an opening 18 for external connection wiring. Wiring for input / output signals from the outside of the device box (not shown) is connected to the required front connector 3 of the printed circuit board 2 via a connector through the opening 18.

According to the configuration of this embodiment, the electrical connection between the printed circuit boards 2 can be made by the front board 12 provided on the back surface of the front cover 10 and the connection connector 14 provided on the front board 12. Since individual electrical connection wiring between the printed circuit boards 2 can be omitted, the number of connector connection wirings can be greatly reduced, connector connection / wiring work and maintenance can be simplified and efficiency can be improved, and the apparatus can be reduced in wiring space. The overall size can be reduced.

Further, the connector connection wiring between the printed circuit board 2 and the electric components in the equipment box can be simplified, so that further wiring work and maintenance can be simplified and efficiency can be improved, and the wiring space can be reduced. The overall size of the device can be reduced.

FIG. 3 shows a printed circuit board unit according to a second embodiment of the present invention. This embodiment is basically the same as that of the first embodiment, and is a modification of the first embodiment. Therefore, the same components are denoted by the same reference numerals, and description thereof will be omitted.

This is an example of a unit in which a large number of printed circuit boards 2 similar to those described above are inserted and stored in a slightly larger apparatus box 1A, and a plurality of printed circuit boards 20 of different sizes are inserted and stored in the upper part. . In the case of such a configuration having two or more types of printed circuit boards 2 and 20, the device box 1A and the front cover 1 are arranged in accordance with the arrangement.
0A and the size of the front board 12A are selected, and the front board 12A is provided with a connector 22 for detachably connecting to a front connector 21 of a printed circuit board 20 having a different size. Further, the arrangement position and the orientation of the relay connector 15 are set so as to fit in the extra space between the printed circuit boards 20 arranged on the upper side.
The rest is the same as the first embodiment.

Next, a third embodiment of the printed circuit board unit of the present invention will be described with reference to FIGS. Since this embodiment is basically the same as the first embodiment, the same reference numerals are given to the same components as those shown in FIGS. 1 and 2 to simplify the description. .

Here, a front cover 30 having no cutout opening is provided on the open front part of the apparatus box 1 by a fastener 11 so as to be detachable. Further, a large front board 32 is provided on the rear surface of the front cover 30 with the fastener 13 interposed therebetween.

The front board 32 is provided with printed wiring, and is electrically connected so as to exchange output signals between the printed circuit boards 2 and between the electric components in the equipment box as in the above-described embodiment. The connection connectors 14 which can be attached to and detached from the front connector 3 of the required printed circuit board 2 which requires the above are fixedly provided. In addition, a relay connector 15 is provided on the upper portion of the rear surface of the front board 32 via the printed wiring of the front board 12 to each connection connector 14 connected to the front connector 3 of the required printed circuit board 2 which needs to be connected to the electric components in the equipment box 1. The device box 1 is connected to a connection connector 16 which is provided in an electrically connected state and which is detachably connected to the relay connector 15 in a male and female pair.
The wirings 17 from the electric components inside are collected and connected.

In the same manner as in the above-described embodiment, individual wirings between the required printed circuit boards 2 and between the required printed circuit boards 2 and the electrical equipment in the device box are performed by the conventional wiring 5 for input / output signals. Instead, they are electrically connected by the printed wiring provided on the front board 12 and the connection connector 14 and the relay connector 15 attached thereto, so that input / output signals can be exchanged with each other.

In this embodiment, a plurality of external connectors 33 are provided on the front board 32.
The connection pin 33a is provided so as to be inserted from the front side of the connector 0. The external connection connectors 33 are electrically connected to the connection connectors 34 via the printed wiring of the front board 32 by the connection pins 33a, and the connection connectors 34 are connected to the required printed circuit board 2 that requires external input / output signal wiring. Is detachably connected to the front connector 3. And these external connectors 33
Although not shown, wires for input / output signals from the outside of the device box are collected and connected.

According to such a configuration, in addition to the above-described operation, individual connector connection wiring between each printed circuit board 2 and the outside of the apparatus box can be simplified, further simplifying wiring work and maintenance and improving efficiency. At the same time, the size of the entire device can be reduced by reducing the wiring space.

[0030]

Since the printed circuit board unit of the present invention is constructed as described above, the number of wirings for input / output signals and the like can be greatly reduced, so that connector connection / wiring work and maintenance can be simplified and efficiency can be improved. In addition, the effect of reducing the size of the entire device by reducing the wiring space can be obtained.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a first embodiment of a printed circuit board unit according to the present invention.

FIG. 2 is a sectional view taken along the line AA in FIG. 1;

FIG. 3 is a perspective view showing a second embodiment of the printed circuit board unit of the present invention.

FIG. 4 is a perspective view showing a third embodiment of the printed circuit board unit of the present invention.

FIG. 5 is a sectional view taken along the line BB in FIG. 4;

FIG. 6 is a perspective view showing a conventional printed circuit board unit.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Device box, 2 ... Printed circuit board, 3, 21 ... Front connector, 10, 10A, 30 ... Front cover, 12, 12A,
32 ... front board, 14, 22, 34 ... connection connector, 15 ... relay connector, 18 ... opening, 33 ... external connection connector.

Claims (3)

(57) [Claims] 1. A printed circuit board unit in which a plurality of printed circuit boards having front connectors are inserted in parallel in a device box and housed, and a front cover provided on an open front portion of the device box, and a back surface of the front cover. A printed circuit board unit, comprising: a front board provided on a printed circuit board and printed wiring; and a connector provided on the front board and connected to a front connector of the required printed circuit board to make an electrical connection between the printed circuit boards. 2. The relay connector according to claim 1, wherein the relay connector is provided on the front board in a state of being electrically connected to a required front connector of the printed board, and is connected to wiring from an electrical component in the device box. Printed circuit board unit. 3. The printed circuit board unit according to claim 1, further comprising an external connector provided on the front board in a state of being electrically connected to a front connector of the required printed circuit board, to which wiring from outside the device box is connected. Printed circuit board unit.