JPH03266497A - Slim type communication equipment - Google Patents

Abstract

PURPOSE:To enable a slim type communication equipment to be improved in mounting efficiency, heat dissipating properties, and EMI resistant property by a method wherein a transmitting unit, a receiving unit, a power unit, a modem unit, and a common unit are placed on a unit support member, and the units are fixed to a side pillar, where all the units are formed of box-shaped units. CONSTITUTION:All units are formed of box-shaped units 50 in which printed boards 56, 62, and 76 are housed. A side pillar 4 to which unit support members 6 that support the units are fixed is disposed upright, a transmitting unit 12, a receiving unit 10, a power supply unit 8, a modem unit 16, and a common unit 14 all composed of the box-shaped units 50 are placed on the unit support members 6 respectively, and the units are fixed to the side pillar 4 by fixing means 38. By this setup, a slim type communication equipment can be improved in mounting efficiency, heat dissipating efficiency, and EMI characteristics.

Description

[Detailed Description of the Invention] Summary Regarding a slim type communication device, the purpose of the present invention is to provide a slim type communication device with improved mounting efficiency, heat dissipation efficiency, and EMI characteristics. In a slim type communication device with a narrow width, each of the units is configured as a box-shaped unit that accommodates a plurality of printed wiring boards inside, and a plurality of boxes that support each unit are configured. A side post to which a unit support member is attached is erected, and the transmitter unit, receiver 48g unit, its unit, modem unit 7) and the common unit, which are box-shaped units, are placed on the unit support member. and each unit is fixed to the side column by a fixing means.

Industrial applications The present invention relates to a slim communication device.

Communication equipment is generally organized into units such as a transmitter unit, receiver unit, power supply unit, modem unit, and common unit, and each unit is mounted on a rack.
The communication device is configured by being mounted in a shell provided in the . By the way, recent wireless communication devices are becoming smaller and more densely packaged, and slim rack structures with narrow widths are being adopted as their mounting form. In communication devices that employ slim racks and are mounted at high density, power consumption per unit volume, amount of wiring, etc. tend to increase.

In addition, in recent digital communications, various important information is transmitted, so communication devices may be affected by the surrounding environment, or conversely, may affect surrounding devices.
If the communication device itself or the surrounding electrical equipment malfunctions, serious consequences may occur.

Therefore, we have developed a product that has good mounting efficiency and heat dissipation efficiency, and is resistant to EMI and E.
SD (Electro Static Discharge)
There is a demand for the development of communication devices with excellent characteristics.

BACKGROUND OF THE INVENTION Conventional communication devices generally have a configuration in which printed wiring boards are mounted vertically in a rack.

In this vertical mounting of printed wiring boards, multiple electronic circuit packages (printed wiring board units) in which multiple electronic components such as IC5LSIs with electronic circuits are mounted on the printed wiring board are mounted via connectors. A shelf unit is configured by mounting the device on a single board mounted on a shelf, and a communication device is configured by mounting a plurality of shelf units on a rack.

The external dimensions of a conventional communication device mounted on a rack are generally 520 mm in width, and one or more communication devices having such a width are arranged side by side depending on the purpose. That's what I was doing. This general communication device has a width of about 520M, so it does not require high-density packaging, and the space is sufficiently large, so it has a structure that is advantageous in terms of heat dissipation characteristics. Therefore, it was easy to achieve heat dissipation characteristics that did not interfere with lid manufacturing operations without taking any special heat dissipation measures.

Recently, customer requests for slim communication devices have increased due to demands for smaller devices.

The general external dimensions of a slim communication device are 120mm wide and 8mm wide.
It is 225 mm deep x 2700 mm high, and each one needs to be independent.

Previously proposed slim type communication devices have a vertically mounted printed wiring board structure using a pair of left and right side columns, and the cables connecting each unit are exposed, resulting in poor EMI resistance and durability. There were problems in that the ESD characteristics were not sufficient, and the mounting efficiency and heat dissipation efficiency were also not very good.

The present invention has been made in view of these points, and its purpose is to improve mounting efficiency, heat dissipation efficiency, and E resistance.
An object of the present invention is to provide a slim type communication device with improved MI characteristics.

Means for Solving the Problem In a slim communication device with a narrow width in which a transmitter unit, a receiver unit, a power supply unit, a modem unit, and a common unit are mounted in a vertically elongated rack, each of the units is printed with a plurality of prints inside it. It consists of a box-shaped unit that houses a wiring board.

Then, a single side pillar to which a plurality of unit support members supporting each unit are attached is erected, and the transmitter unit, eight receiver units, a power supply unit, a modem unit, and a common unit are constructed of box-shaped units. are respectively placed on the unit support members, and then each unit is fixed to the side column by a fixing means.

Desirably, the side post has a generally U-shaped cross section, and a cable connecting each unit is inserted into the side post.

Function Since each unit is constructed from a box-shaped unit, a shield can be completed in each unit, and the EMI resistance characteristics can be improved. In addition, since the slim rack has only one side pillar on either the left or right side, mounting efficiency can be improved, and since there is no backboard and a clear space is provided in the front and rear direction, heat dissipation efficiency can be improved. I can do it. Further, since the cross section of the side column is formed into a substantially U-shape, and the cable connecting each unit is passed through the side column, the EMI resistance characteristics can be improved.

Embodiments Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

First, the overall configuration of an embodiment of the present invention will be described with reference to FIGS. 1 to 3. The slim type rack 2 is constructed with one side post 4 erected, and unit support fittings 6 for supporting each unit are fixed to the side post 4.

On each support bracket 6 are a power supply unit (PS) 8, a receiver unit (RX) 10, and a transmitter unit (TX) 1.
2, a common unit (COM) 14, and a modem unit (MD) 16 are installed. 18 is a terminal board unit (TERM), and a multiplexer/demultiplexer 20 is provided between the receiver unit 10 and the transmitter unit 12.

As shown in FIGS. 3 and 4, the terminal board unit 18 is provided with a plurality of circulators 22, a converter 24 for mode conversion from a waveguide mode to a coaxial mode, and a plurality of connectors 26. Further, the multiplexer/demultiplexer 20 includes a plurality of circulators 28 and a plurality of filters 30. A unit connector 32 is detachably connected to each unit 8, 10, 12, 14, 16, and connections between the units are made via the unit connector 32 and a cable.

Since the installation procedure for each unit is the same, the installation procedure for the power supply unit 8 will be described as a representative example. Side pillar 4
Two guide pins 34 are provided for the power supply unit 8, and the power supply unit 8 is supported as a unit so that these guide pins 34 fit into guide holes provided on the front surface of the power supply unit 8. Place it on the metal fitting 6 and tighten the screw 38.
Fix the front of the power supply unit 8 to the side column 4 with the steps. Other units can be attached in the same manner.

Figure 4 shows a schematic plan view when four slim racks 2 are connected, and in order to facilitate the horizontal connection between each slim rack, the depth of the side pillar 4 of each slim rack 2 is set for each slim rack. The depth is reduced to approximately 1/2 of the depth of . As is clear from the enlarged sectional view of FIG. 5, the side column 4 has a generally U-shape or C-shape, and accommodates therein a plurality of cables 40 that connect the units. The side pillar 4 is made of aluminum, for example, and a shielding cover 42 also made of aluminum is attached if necessary. As shown in FIG. 6, the shield cover 42 has a plurality of notches 4 for pulling out cables.
3 is provided.

In this way, connect the cable 40 connecting each unit to the side pillar 4.
Since it is housed inside, it is possible to improve EMI resistance.

Each unit 8, 10, 12, 14, 16 is composed of a box-shaped unit, and each unit has EM resistance by shielding the printed wiring board housed inside.
In addition to improving I characteristics, the back wiring board required in conventional mounting is omitted to create a slim rack 2.
Heat dissipation efficiency is improved by providing transparent space in the front and rear directions.

Hereinafter, the box-shaped unit structure, which is one of the features of the present invention, will be explained with reference to FIG. 7 and FIG. IJ8. A first printed wiring board 56 on which electronic components 54 are mounted is accommodated in the box body 52 of the box-shaped unit 50, and the first printed wiring board 56 is electrically connected to the unit connector 32 via a connecting cable 58. It is connected. A hinge attachment fitting 60 is fixed to the box body 52, and by attaching the hinge 64 fixed to the M2 printed wiring board 62 to the metal fitting 60, the second printed wiring board 62 is attached to the box body 52 as shown by arrow A. It can be opened and closed freely.

By connecting the connector 66 of the first printed wiring board 56 and the connector 68 of the second printed wiring board 62 with the connecting cable 70 as shown by arrow B, the first and second printed wiring boards 56, 62 are electrically connected. Connected.

Second printed wiring board 6 relative to first printed wiring board 56
2 is achieved by aligning the fixing member 72 provided on the first printed wiring board 56 and the hole 73 of the second printed wiring board 620, and tightening the screw to the fixing member 72 through the hole 73.

74 is a lid housing a third printed wiring board 76;
It is attached to the box body 52 by a hinge 78 so as to be openable and closable. Connector 80 provided on first printed wiring board 56
By connecting the connector 82 provided on the third printed wiring board 76 with the connecting cable 84 as shown by the arrow, electrical connection between the first and third printed wiring boards 56 and 76 is achieved. The box body 52 has many ventilation holes 5.
3 are provided, and the lid body 74 is also provided with a large number of ventilation holes 75. FIG. 8 shows a cross-sectional view of the box-shaped unit with the second printed wiring board 62 folded and the third printed wiring board 76 opened.

FIG. 9 shows an exploded perspective view of an embodiment in which one box-shaped unit 50 is attached to the side column 4 of a rack. A unit support fitting 6 is fixed to the side column 4, and two guide pins 34 are provided for one unit on the front side.
is provided.

After the box-shaped unit 50 is folded as shown in FIG. 9, the top plate 86 is fixed to the front surface of the box-shaped unit 50 with screws 88.
It can be fixed to 2. Box-shaped unit 50
A metal fitting 90 provided with two guide holes 91 into which the guide pins 34 fit is fixed to the frame, and the box-shaped unit 50 is placed on the unit support metal fitting 6 by fitting the guide pins 34 into the guide holes 91. After being placed, the box-shaped unit 50 can be fixed to the side post 4 by fixing the metal fittings 90 to the side post 4 with the screws 38.

Note that although the metal fitting 90 in FIG. 9 is not provided with a handle to make it easier to handle the box-shaped unit 50, the metal fitting 90
A handle may be provided by extending in the vertical direction.

Effects of the Invention Since the slim type communication device of the present invention is configured as detailed above, it has the following effects.

(a) Since the side pillars are on one side, mounting efficiency and heat dissipation efficiency are good.

(b) Since each unit is a box-shaped unit, the shielding is completed in a single unit, and the EMI resistance is excellent.

(c) Since the contact area for heat transfer to the side pillars is large, the heat radiation efficiency is good.

(d) Since the cables connecting each unit are passed inside the side pillars, the EMI resistance is excellent.

(e) Burmese without a backboard etc. on the rear side;
It is transparent in the front and back directions, allowing for good ventilation.

(f) Since grounding can be ensured through the side pillars, ES resistance is ensured.
Excellent D characteristics.

(g) It is easy to connect multiple slim racks.

[Brief explanation of drawings]

Figure 1 is a perspective view of an embodiment of the present invention, Figure 2 is a front view of an embodiment in which two slim racks are connected, Figure 3 is a side view of the embodiment, and Figure 4 is a diagram in which four slim racks are connected. FIG. 5 is an enlarged cross-sectional view of the side column, FIG. 6 is a perspective view of the side column cover, FIG. 7 is an exploded perspective view of the box-shaped unit, and FIG. 8 is a cross-section of the box-shaped unit. FIG. 9 is an exploded perspective view of an embodiment in which one box-shaped unit is attached. 2... Slim rack, 4... Side pillar, 6... Unit support bracket, 8... Power supply unit, 10... Receiver unit, 12... Transmitter unit, 14... Common Part unit, 16... Modem unit, 18... Terminal board unit, 20... Multiplexer/demultiplexer, 4... Guide pin, 0... Cable, 0... Box-shaped unit, 2. ...Box body, 6...First printed wiring board, 2...Second printed wiring board, 6...Third printed wiring board.

Claims (3)

[Claims] 1. In a narrow slim type communication device in which a transmitter unit (12), a receiver unit (10), a power supply unit (8), a modem unit (16), and a common unit (14) are mounted on a vertically long rack (2). , each unit has a plurality of printed wiring boards (5
6, 62, 76), and a single side post (4) to which a plurality of unit support members (6) for supporting each unit are attached is erected. the transmitter unit (12) comprising a box-shaped unit (50);
A receiving section unit (10), a power supply unit (8), a modem unit (16), and a common section unit (14) are respectively placed on the unit support member (6), and each of the units is mounted on the side column (4). A slim type communication device, characterized in that it is fixed by a fixing means (38). 2. The box-shaped unit (50) has a box body (52) foldably housing a plurality of printed wiring boards (56, 62) that are electrically connected to each other, and a printed wiring board (76) inside. The housed lid body (74) is attached so as to be openable and closable, and the printed wiring board (56, 62) inside the box body (52) is attached.
2. The slim type communication device according to claim 1, wherein the slim type communication device is configured by electrically connecting the and a printed wiring board (76) inside the lid (74). 3. The side pillar (4) has a generally U-shaped cross section, and a cable (40) connecting each unit is installed inside the side pillar.
2. The slim type communication device according to claim 1, wherein a slim type communication device is inserted through the slim type communication device.