JPH0371800B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (1) Technical Field of the Invention The present invention relates to a mounting structure for an electronic device rack such as a communication device, a switching device, etc.

(2) Background of the technology In recent years, there has been a trend towards higher density units such as communication equipment, switching equipment, etc., which are equipped with electronic circuits. etc. are required. On the other hand, there is a demand for unified installation methods, improved maintainability, and overall economicalization and downsizing of the system.

(3) Prior Art and Problems FIG. 1 is a front perspective view showing the entire conventional electronic device.

In Fig. 1, reference numeral 1 indicates an interframe connection cable introduced from the ceiling side, 2, 6, and 8 are cable ducts in which the above-mentioned cable 1 is laid and housed in the vertical and horizontal directions at the front of the equipment, and 3 is a cable duct installed in multiple stages on the equipment rack. The installed electronic circuit unit 4 is a fan unit for forced air cooling installed between the electronic circuit units 3, which is also installed on the equipment rack, 5 is the power distribution panel installed at the bottom, and 7 at the top is the rack. Internal power supply, shown.

As described above, cable ducts 2, 6, and 8 accommodate cables and wiring inside the equipment rack in addition to the cable 1 from outside the equipment rack, and are placed in front of the equipment rack for ease of maintenance. There was a problem that the appearance was undesirable because it was installed as an extension.

Since a forced air cooling fan 4 for cooling the electronic circuit unit 3 is provided, maintenance is troublesome due to replacing the air filter and fan.

Each structural portion will be explained below with reference to the drawings.

2 is a partially sectional perspective view of FIG. 1; FIG. In FIG. 2, 21 is a unit mounting frame attached between the pillars, 22 on the lower surface thereof is a convection guiding plate, and 23 inserted and mounted on the unit mounting frame 21 is an electronic circuit unit. A groove-shaped portion 24 in the left and right direction provided on the front surface of the convection guide plate 22 is a cable receiver, and 25 erected on the left and right are a pair of pillars. Reference numeral 26 indicates a connection cable between the frames and the electronic circuit units.

As shown in FIG. 2, the electronic circuit unit 2
A connector is provided on the front surface of each of the electronic circuit packages inserted and mounted on the cable 26, and the connector at the end of the cable 26 is connected to this connector. Therefore, when pulling out the electronic circuit package 23, it is necessary to remove the connector on the cable side, which is troublesome and complicated, and removing each connector by shaking it by hand may cause wear and tear on the internal contacts of the connector. There were some inconveniences that occurred.

FIG. 3 is a perspective view of the electronic circuit unit with the intermediate portion omitted. In FIG. 3, an electronic circuit package 32 housed in a box-shaped electronic circuit unit 31 is provided with a connector for connecting to a cable at the front of the electronic device rack, as explained in FIG. There is.

FIG. 4 is a partial perspective view of the cable handling structure, with the rack front cover removed. In Fig. 4, 41 is an electronic circuit unit, 42 is a flat cable, 43 is a cable duct provided in the left-right direction on the front, 44 is a flat cable arrangement tool, 45 is a frame column, 46 is a cable support, 47
A fan unit for forced air cooling is shown.

As shown in Fig. 4, the flat cable 4
2 is connected to an electronic circuit package by a connector on the front side of the electronic device rack, and is led to a cable duct 43 by a cable support and a flat cable arrangement tool 44. For this reason, when pulling out the electronic circuit package as described above, it is necessary to remove the cable-side connector connected to the front, which is troublesome and complicated. In addition, a cable duct 43 is provided below the front of the electronic circuit unit 41.
As a result, overall mounting efficiency was reduced by this amount.

FIG. 5 is a partial perspective view of another cable handling structure different from that shown in FIG. 4, with the rack front cover removed. In FIG. 5, 51 and 55 are flat cables, 52 is a cable duct provided in the left and right direction on the front, 53 and 54 are flat cable arrangement tools, 56 is a cable support, 5
7 is an electronic circuit unit, and 58 is a frame column.

In FIG. 5, as in FIG. 4, flat cables 51 and 55 are connected to the electronic circuit package at the front side of the electronic equipment rack, and a cable support 56 and a flat cable wiring tool 53,
54 and is guided by the cable duct 52 to connect between the frames and the electronic circuit units, it cannot be said to be sufficient in terms of mounting efficiency, appearance, security, etc. Ta.

(4) Purpose of the Invention The present invention has been made in view of the above-mentioned conventional problems, and its purpose is to integrate the mounting structures of communication devices, switching devices, etc., and to make the mounting components versatile. Based on integration and series, we have achieved consistency in mounting, unification of installation methods, ease of adding and changing functions, high-density mounting, natural air cooling, improved maintainability, improved appearance, etc. The aim is to make the system more economical and more compact.

(5) Structure of the Invention The gist of the structure of the present invention to achieve the above object is to provide a unit mounting frame on which an electronic circuit unit containing an electronic circuit package is mounted between a pair of pillars erected on the left and right sides. and convection guide plate units disposed above and below the electronic circuit unit are attached at both left and right ends, respectively, and are formed by the left and right sides of the back part of the electronic circuit unit and the back surface of the frame based on the width of the frame. The above-mentioned convection guide plate unit has a vertical space for inducing convection that rises from the front to the back. It consists of a plate and a rectifying plate parallel to the convection induction plate on the back side, and the space on the back side of the rectifying plate is used as a cable laying space in the left and right direction of the cable, and the electronic circuit unit is connected to the connector connected to the terminal of the cable. This is a mounting structure for an electronic device rack, characterized in that the connector is connected to the rear connector of the electronic device rack.

(6) Embodiments of the Invention Hereinafter, the mounting structure of the electronic device rack of the present invention will be described in detail by way of embodiments with reference to the drawings.

FIG. 6 is a perspective view of one embodiment seen from the front side to show the overall structure of the electronic device according to the present invention, in which three racks are installed in parallel. In FIG. 6, reference numeral 61 indicates an inter-frame connection cable that is suspended from the ceiling and is introduced into the electronic equipment rack, 62 is a back cover that covers the back of the electronic equipment rack, 63 is a side cover that is attached to both sides of the back of the electronic equipment rack; Reference numeral 64 denotes a frame main body consisting of a pair of frame columns erected on the left and right, a ceiling member and a bottom plate member arranged above and below to connect the frame columns, 65 is a frame body arranged above and below the electronic circuit unit, and 65 is arranged above and below the electronic circuit unit. 66 is a power distribution board disposed at the bottom of the electronic equipment rack; 67 is an electronic circuit unit mounted in multiple stages in the vertical direction on the electronic equipment rack; 68 Reference numeral 69 shows an electronic circuit package that is plug-in-mounted in large numbers in parallel to an electronic circuit unit, and 69 a unit mounting frame whose both ends are attached to the left and right pillars.

Each structural portion will be explained below with reference to the drawings.

FIG. 7 shows a horizontally cross-sectional plan view of the electronic device rack 1 of FIG. 6. As shown in FIG. In Figure 7,
71 is a cable wiring space, 72 is a cover mounting fitting, and other symbols indicate the same objects as shown in FIG. 6. Frame body 6
The left and right pillars 4 are each formed by winding sheet metal to have a rectangular cross section, have a width in the left and right direction, a length in the depth direction, and have sufficient strength. The electronic circuit unit 67 is mounted on a unit mounting frame 69, and the unit mounting frame 69 is screwed to the front surface of the frame using brackets extending outward from both left and right ends of the front surface.

The length of the column in the depth direction is the convection guide plate unit 65, the electronic circuit unit 67, and the unit mounting frame 6.
It is shorter than the length in the depth direction of 9. Moreover, the length of these in the left-right direction is narrower than the width between the inner sides of the frame columns, and the width is such that they can be inserted from the front. Therefore, a vertical space is provided on the left and right sides of the back surface of the electronic circuit unit 67, which is formed by the back surface of the frame based on the width of the frame. That is, this space is secured as a cable wiring space 71. The cover mounting bracket 72 is the wiring space 7
1, and is along the side cover 63, the front end is attached to the back of the column, the back cover is attached to the back end, and the side cover is detachably attached to the side. ing.

Cables to be connected to other electronic equipment racks are raised from the top of the wiring space 71, routed through a cable rack (not shown) installed on the ceiling, and then similar cables are routed from the top of the corresponding electronic equipment rack. Draw into the space and make the connection. This can be avoided by laying all the connection cables between the electronic equipment racks before the installation work for installing the electronic equipment racks, and then plugging the connectors at the ends of the cables after installing and mounting the electronic circuit units. By connecting in
The connection of the electronic device rack is completed. The same applies not only to signal system cables but also to power supply cables and the like.

As described above, the short length of the frame main body 64 in the depth direction improves the manufacturability and handleability of the frame. In addition, when electronic equipment racks are installed adjacent to each other, by not attaching the side covers 63 of the adjacent parts, the connection cable between the electronic equipment racks can be directly connected between the adjacent parts without going through a cable rack on the ceiling, etc. It enables cross-connection, and is effective when cable length is limited due to problems such as delay time and signal attenuation. Note that the back cover 62 has a mesh shape so that hot air generated within the electronic device can be efficiently discharged to the external space on the back surface of the electronic device rack.

FIG. 8 is a perspective view of the convection guide plate unit 65 shown in FIGS. 6 and 7, and FIG. 9 is a sectional view of the convection guide plate unit as seen from the left side. As shown in FIG. 8, the front end portions of the left and right vertical side plates each extend outward to form a bracket, which is attached to the front surface of the column. In Fig. 8, 81 is a unit mounting guide cut horizontally inward from both sides;
2 is a convection guide plate that slopes upward from the front to the back.

In FIG. 9, 91 is an electronic circuit unit mounted above and below the convection guide plate unit, and 92 is an electronic circuit unit 82 mounted above and below the convection guide plate unit.
93 is a unit mounting guide similar to 81, 94 is a rectifying plate parallel to this convection guide plate 92 with a space between them, and 95 is a convection guide similar to 65. Guide plate unit, 96 is cable installation space in left and right direction,
Reference numeral 97 indicates a signal cable, a power supply cable, etc., and 98 indicates a cable support extending downward and toward the rear of the back surface of the rectifying plate 94.

The air that entered from the front of the convection guide plate 92 is
The heat generated by the IC, LGI, resistor, etc. mounted on the electronic circuit package in the electronic circuit unit 91 mounted on the upper part is taken away by the upper inclined surface of the convection induction plate 92, and the electronic circuit unit The convection guide plate 91 is guided between the lower inclined surface of the convection guide plate 92 of the convection guide plate unit 95 and the rectifier plate 94, and is discharged to the outside through the mesh-like back cover on the back side of the electronic device rack.

The rectifier plate 94 directs hot air discharged from the electronic circuit unit 91 mounted on the lower stage to the convection guide plate unit 9.
This serves as a guide and a chimney to prevent hot air from entering the hot air exhaust section 5 and to efficiently exhaust hot air.

Since the amount of heat generated by the electronic circuit unit 91 varies depending on the device, mounting space can be saved by installing convection guide plate units of different sizes for devices that generate less heat and those that generate more heat. This eliminates waste and increases implementation efficiency.

In this way, by adopting the natural air cooling method using the convection guide plate unit, it is possible to simplify the mounting structure, simplify maintenance, etc.

When mounting a unit that does not generate enough heat to require the use of a convection guide plate unit, or a unit whose heat generation can be ignored, such as an operation panel, it is recommended to install a unit with a frame shape in plan view attached to the left and right sides of the frame. It is also possible to use a unit mounting shelf (not shown) that can simply mount and support the unit. In such a case, it is of course possible to stack a plurality of electronic circuit units that generate a relatively small amount of heat and cool them all at once by combining them with convection guide plate units.

The back space of the rectifier plate 94 is used as the electronic circuit unit 9.
A cable installation space 96 is used to accommodate signal connection cables, power supply cables, etc. 97 that go in and out of the back of 1, and cables 97 are supported and fixed by cable supports 98 in the left and right direction (direction perpendicular to the plane of the paper in FIG. 9). Since it is connected to the back side of the lower electronic circuit unit 91, the hot air exhaust path is not obstructed.

10 is a front perspective view of the unit mounting frame shown at 69 in FIG. 6 and an electronic circuit unit shown at 67 in the same figure, and FIG. 11 is a rear perspective view of the electronic circuit unit. shows.

In FIGS. 10 and 11, 101 is a metal fitting for preventing the plugged-in electronic circuit package from coming off, which is provided on the front side of the electronic circuit unit, 102 is the electronic circuit package that is plugged in and connected in parallel, and 103 is on the back side. Back wiring board An electronic circuit unit formed by plug-in mounting and accommodating a plurality of electronic circuit packages in the connector of a printed board, 104 is a unit mounting frame for mounting the electronic circuit unit, 111 is a back wiring board on the back of the electronic circuit unit. , 112 are connectors for connecting to terminal connectors such as signal connection cables, power supply cables, etc., which are connected on the back side.

The front ends of the left and right vertical side plates of the unit mounting frame 104 extend left and right to form a bracket, which is screwed to the front surfaces of the frame columns on both sides.
In the case of Figure 10, 1/4 corresponds to the inner width between the columns.
Guides are formed on the bottom surface so that four wide electronic circuit units 103 can be mounted thereon, and air circulation holes are formed between the guides. The electronic circuit unit 103 is mounted and attached to the unit mounting frame 104 at the top and bottom of the front surface using screws or the like.

Two such electronic circuit units 103 may be used, each having a width that is half the width of the unit mounting frame.
It is also possible to combine one half-width one and two 1/4-width ones, and it is also possible to make one full-width one depending on demand. FIG. 11 shows the case of such a full width. Other arbitrary forms such as 1/3 width, 1/6 width, 1/8 width, etc. can be applied.

The power supply cable from the power distribution unit is connected to the power supply connector 112 and the back wiring board 11.
1, a power supply package 1 for generating the necessary power within the electronic circuit unit 103.
02 is connected to the connector. Power generated by the power supply package 102 is supplied to each electronic circuit package 102 via a back wiring board 111. Further, another connector 112 provided on the back wiring board 111 is a connector that is connected to a signal connection cable between devices or between electronic circuit units.

As described above, the unit mounting frame 104 is for mounting the electronic circuit unit 103 on the electronic device rack, and it is possible to efficiently and orderly mount the electronic circuit units arranged in series. However, in the case of an electronic circuit unit that can accommodate the entire width of the rack, it is necessary to place it on the unit mounting guide 81 of the convection guide plate unit and attach it directly to the rack using the mounting bracket, without using a unit mounting frame. ,
It is possible to mount the unit using the unit mounting frame 104. The use of the unit mounting frame 104 is useful and effective when, in the future, electronic circuit units corresponding to the rack width are to be replaced with series electronic circuit units.

(7) Effects of the Invention As described above with respect to the embodiments, the mounting structure of the electronic device rack of the present invention has the pillar portion of the frame main body having a width that is the minimum width necessary for the strength of the pillar. In addition to ensuring a depth dimension of This eliminates the need for conventional cable ducts, etc. for accommodating cables. Furthermore, before installing the electronic equipment rack, the cables between the equipment racks are laid in advance, and after the equipment rack is installed, the connection is completed by simply plugging the cable terminal connector into the connector on the back of the electronic equipment unit. Therefore, it has become possible to simplify the installation work and shorten the installation period.

In addition, by using a convection induction plate unit with improved natural air cooling capacity in combination with one that matches the heat output of the electronic circuit unit, an optimal cooling condition can be obtained and packaging density can be improved. . By making the back of this unit a horizontal cable laying space, it is possible to lay cables in an orderly manner in combination with the vertical direction.

In terms of maintenance, most of the maintenance is normally performed from the front side of the equipment rack, but according to the mounting structure of the present invention, there are no obstacles on the front side of the equipment, and maintenance can be easily performed. Note that a front cover may be added if necessary, for example, in response to requests for aesthetics, safety, etc. of the front of the device.

According to the mounting structure of the present invention, it is possible to integrate the mounting of various electronic devices, unify the appearance, unify installation work, unify maintenance work, etc., and contribute to overall economicalization and miniaturization of the system. It's a big deal.

[Brief explanation of drawings]

Fig. 1 is a front perspective view showing the entire conventional electronic device, Fig. 2 is a partially sectional perspective view of Fig. 1, Fig. 3 is a perspective view of a conventional electronic circuit unit, and Fig. 4 is a conventional cable. FIG. 5 is a partial perspective view of a conventional cable processing structure different from FIG. 4, FIG. 6 is a front perspective view showing the entire electronic device according to the present invention, and FIG. Fig. 6 is a horizontal cross-sectional plan view of the electronic device rack, Fig. 8 is a perspective view of the convection guide plate unit, Fig. 9 is a sectional view of the convection guide plate unit, and Fig. 10 is the unit mounting frame and electronic circuit. FIG. 11 is a front perspective view of the unit, and FIG. 11 is a rear perspective view of the electronic circuit unit. In each drawing, 61 is an interframe connection cable;
2 is the back cover, 63 is the side cover, 64 is the frame body, 65 is the convection guide plate unit, 66 is the power distribution panel, 67 is the electronic circuit unit, 68 is the electronic circuit package, 69 is the unit mounting frame, 71 is the upper and lower parts. Cable wiring space in the direction, 72 is the cover mounting bracket, 81 is the unit mounting guide, 82
91 is a convection guide plate, 91 is an electronic circuit unit, 92 is a convection guide plate, 93 is a unit mounting guide, 94
95 is a rectifier plate, 95 is a convection guide plate unit, 96 is a cable laying space in the left and right direction, 97 is a signal cable, power supply cable, etc., 98 is a cable support, 101 is a stopper for the electronic circuit package,
Reference numeral 102 indicates an electronic circuit package, 103 indicates an electronic circuit package, 104 indicates a unit mounting frame, 111 indicates a back wiring board, and 112 indicates a connector directly connected to a connector such as a signal connection cable or a power supply cable connected on the back side.

Claims (1)

[Scope of Claims] 1. A unit mounting frame on which an electronic circuit unit containing an electronic circuit package is mounted between a pair of pillars erected on the left and right sides, and a convection guide plate unit disposed above and below the electronic circuit unit. They are attached at both left and right ends, and a vertical space is provided between the left and right rear parts of the electronic circuit unit and the back surface of the frame based on the width of the frame, and the space is connected to the outside of the device. A mounting structure for an electronic equipment rack, characterized in that the installation space is used for a cable connected to an electronic circuit unit. 2. The convection guide plate unit is composed of a convection guide plate that rises from the front to the back, and a rectifier plate that runs parallel to the convection guide plate on the back, and uses the space on the back side of the rectifier plate as a cable installation space in the left and right direction of the cable. 2. The mounting structure of an electronic equipment rack according to claim 1, wherein the connector connected to the terminal of the cable is connected to the rear connector of the electronic circuit unit.