JPH098481A - Shelf structure of wireless device - Google Patents

Abstract

PURPOSE: To enable a wireless device to be enhanced in density and lessened in size and cost by a method wherein a branching device unit is mounted on a shelf from behind so as to position a band-pass filter under one of shelf boards and a three-dimensional circuit on the back of a back board. CONSTITUTION: A branching device unit 33 is composed of a band-pass filter 31 and a three-dimensional circuit 32, wherein the band-pass filter 31 is mounted on the horizontal plate 30a of an L-shaped supporting plate 30, and the three- dimensional circuit 32 is mounted on the front of a vertical plate on a horizontal plate 30a side. The branching device unit 33 is mounted on a shelf from behind in a detachable manner so as to position the band-pass filter 31 under one of shelf boards 17 to 20 and the three-dimensional circuit 32 on the back side of a back board 26. By this setup, more panel units can be housed in an empty space of the same volume, so that a wireless device of this constitution can be enhanced in mounting density and functions without providing additional racks and lessened in size.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wireless device shelf structure. For radio equipment in the high frequency band such as microwaves, mount the transmitter board, receiver board, control board, modulator / demodulator board, power board, etc. by plug-in connection to the shelf where the backboard with connectors on the back side is placed. In addition, a structure is adopted in which a plurality of these shelves are arranged vertically and accommodated in a rack. In a wireless device adopting such a structure, the overall size of the device is ETSI (European Telecom
uniations StandardsInsti
It is determined by an international standard such as the “tute”, and how to achieve high-density mounting within the range of the determined standard is an issue.

[0002]

2. Description of the Related Art FIG. 12 is an exploded perspective view showing a structure of a microwave radio apparatus adopting a conventional shelf structure.
3 is the same front view, and FIG. 14 is the same sectional view.

In the figure, reference numeral 41 is a rack, and the rack 41 is constructed by connecting and supporting a top plate and a bottom plate with a pair of side columns. A plurality of shelves 42 are accommodated and supported on the rack 41 in a vertically aligned state. The shelf 42 is constructed by horizontally installing a pair of shelf plates across a pair of upright side plates, and a back board 44 having a plurality of connectors 43 mounted thereon is provided on the back side (back side) thereof. There is.

A plurality of guide rails 45 are arrayed on the shelf plate of the shelf 42.
5, a transmission board 46, a reception board 47, a control board 48, a modulation / demodulation board 49, a power supply board 50, etc. are inserted.
The connectors of 6, 47, 48, 49 and 50 are fitted to the connector 43 of the backboard 44.

Corresponding boards 46, 47, 48, 4 respectively
A plurality of shelves 42 on which 9 and 50 are mounted are vertically arranged on a rack 41 and supported, and a three-dimensional microwave circuit unit 51 including a circulator 51a connected to an antenna is provided at the top and a plurality of rectangular parallelepiped bands. Pass filter 52
Is attached. These bandpass filters 5
2 and the transmitting board 46 or the receiving board 47 are connected by a coaxial cable 53.

In order to ensure continuous operation even in the event of a failure, this wireless device is equipped with a standby system in addition to the active system. In this figure, the left side is the active system separated by the center, and the right side is the right system. Is a standby system.

By the way, as shown in the sectional view of FIG. 15, the shelf board 54 of the shelf 42 is provided with a board 46,
A rectangular through hole 54a is formed for ventilation for cooling 47, 48, 49, 50.
A pair of reinforcing metal fittings 55 formed in a substantially L shape near a
Are mounted by welding or the like over the longitudinal direction (lateral direction) of the shelf board 54, thereby mounting the boards 46, 47, 4
It is reinforced to withstand a weight of 8, 49, 50.

Further, as shown in FIG. 16, the side edges of the pair of side plates 56 of the shelf 42 on the rear side are bent inward, respectively, and the back portion extends between the bent portions 56a. Although the board 44 is attached, the backboard 44 is mounted due to the pressing force generated by the fitting of the connector 43 when the boards 46, 47, 48, 49 and 50 are mounted.
Is bent to the outside and the fitting is insufficient, and in order to prevent damage such as breakage of the backboard 44, the cross section is formed in a substantially U shape on the back surface of the backboard 44. A pair of reinforcing metal fittings 57 are attached laterally with screws or the like.

FIG. 17 shows a configuration in which the above-mentioned wireless device is expanded by two systems for the active system to increase the number of communication channels and the like so that the active system has three systems and the standby system has one system. . That is, since the size of one rack is determined by the above-mentioned international standards and the like, it is not possible to deal with this by enlarging the rack itself. It is designed to support a plurality of shelves mounted with etc.

In FIG. 17, the boards 46, 47, 48, 49, 50 accommodated in the rack 41 before expansion are all active systems (2 systems), and the boards 46 accommodated in the separate rack 61. , 47, 48, 49, 50, the left side is the active system (1 system), and the right side is the standby system (1 system), and the left side is 3 systems for the active system and 1 for the standby system. It is a system.

[0011]

However, according to the above-mentioned conventional technique, there are the following problems. That is, in the past, since a separate rack was added when the functions were added, there was a problem that the device as a whole was extremely large. Further, since the three-dimensional circuit unit and the bandpass filter are directly attached to the rack, since these three-dimensional circuits and the like have different sizes depending on the frequency, the replacement work is complicated and the number of work steps is small. There was a problem that there were many.

Further, in order to reinforce the shelf board or backboard of the conventional shelf, a reinforcing member which is a separate component is retrofitted, so that there is a problem that the number of constituent parts is large and the number of working steps is large. Also, the positional relationship between the backboard connector and the shelf guide rails must be precise for accurate mounting of the board, but since the backboard is conventionally attached to the side plate of the shelf, the side plate and shelf It is necessary to strictly set the positional accuracy with respect to the plate, and there is a problem that the number of man-hours required for manufacturing is large.

The present invention has been made in view of the above circumstances, and an object of the present invention is to achieve high-density mounting of the device, reduce the number of parts, and reduce the number of work steps, and to achieve a wireless device. It is an object of the present invention to provide a shelf structure of a wireless device that can be configured in a small size and at low cost.

[0014]

In order to solve the above problems, the following structure is provided. That is, a shelf in which a plurality of shelf plates each having a guide rail are horizontally installed between a pair of upright side plates, and a backboard in which a plurality of connectors provided near the back side of the shelf are mounted. A branching unit having a three-dimensional circuit unit and a bandpass filter connected to the antenna, a circuit including a high-frequency circuit accommodated therein, and a connector fitted to the connector of the backboard, In a wireless device including a plurality of board units inserted along the guide rails from the front side of the shelf, an L-shaped support plate formed by integrally forming a horizontal plate and a vertical plate on the horizontal plate. With the bandpass filter attached,
The three-dimensional circuit unit is attached to the front surface of the vertical plate on the side of the horizontal plate to form a duplexer unit, and the duplexer unit is
The bandpass filter is located directly below one of the shelves of the shelf, and the three-dimensional circuit unit is detachably attached to the shelf from the back side so that it is located on the back side of the backboard. .

In addition to the above-mentioned structure, a rectangular through hole is formed in the shelf plate that constitutes the shelf, and the vicinity of the edge of the through hole is substantially opposite to the side on which the board unit is mounted. It can be bent at right angles to form a structure.

Further, a back board mounting plate having a rectangular through hole which is substantially parallel to the vertical plate is provided so as to be located on the front side of the three-dimensional circuit unit of the demultiplexer unit. The board mounting plate may be integrally formed with a shelf plate constituting the shelf, and the backboard may be mounted on the backboard mounting plate so as to close the through hole.

[0017]

According to the present invention, the band-pass filter is mounted on the horizontal plate of the L-shaped support plate integrally formed with the horizontal plate and the vertical plate, and the three-dimensional structure is provided on the front surface of the vertical plate on the horizontal plate side. Attach the circuit part to make a duplexer unit, and attach this duplexer unit to the shelf from the rear side,
Since the upper part of the bandpass filter on the front side of the three-dimensional circuit in the shelf is used for mounting the panel unit, more panel units can be accommodated in the same volume, achieving high-density mounting and adding functions. Sometimes it is not necessary to use a separate rack, and the downsizing of the device can be achieved.

Further, since the demultiplexer unit is formed independently and is detachably attached to the shelf, it is possible to collectively carry out the replacement of the three-dimensional circuit unit and the bandpass filter when the operating frequency is changed. It can be replaced and the work man-hours can be reduced.

Further, if a rectangular through hole is formed in the shelf plate constituting the shelf and the vicinity of the edge of the through hole is bent at a substantially right angle, a reinforcing member as a separate component as in the prior art. Is reinforced without using
The number of component parts is reduced, and the work man-hour is reduced.

A backboard mounting plate having a rectangular through hole substantially parallel to the vertical plate is provided so as to be located on the front side of the three-dimensional circuit unit of the duplexer unit. Is integrally formed with a shelf plate that constitutes the shelf, and the backboard is attached to the backboard mounting plate so as to close the through hole, a conventional reinforcing member is used as a separate component. Without having to reinforce it, the number of component parts is reduced, the work man-hour is reduced, and the alignment of the backboard connector and the shelf board guide rail is easy, which also contributes to the work man-hours during manufacturing. Can be reduced.

[0021]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an exploded perspective view showing a main configuration of a microwave radio apparatus according to an embodiment of the present invention, FIG. 2 is a front view showing the same overall configuration, and FIG. 3 is a sectional view showing the same overall configuration.

In FIG. 2 and FIG. 3, 11 is a rack,
The rack 11 includes a top plate 11a and a bottom plate 11b as a pair of side columns 11c.
It is connected and supported by. On the rack 11, there are arranged a first shelf 12 that constitutes a transmitter / receiver, a second shelf 13 that constitutes a controller, a third shelf 14 that constitutes a modulator / demodulator, and a fourth shelf 15 that constitutes a power supply unit in this order from the top. It is supported in a fixed state.

The first shelf 12 is a shelf to which the shelf structure of the present invention is applied, and is constructed as shown in FIG. In the figure, the first shelf 12
Is a set of four shelves 1 extending between a pair of upright side plates 16.
7, 18, 19, and 20 are horizontally installed.

As shown in FIGS. 4 and 5, the shelf plates 17, 18, 19, 20 are formed by bending the outer peripheral portion of the sheet metal and forming a rectangular through hole 21 in the central portion. The vicinity of both side edges in the lateral direction of the hole is bent inward to form a reinforcing portion 22. These reinforcing portions 22 are arranged in the longitudinal direction of the shelves 17, 18, 19, 20 (the direction across the side plates 16).
Shelf plates 17, 18, 19, 20 due to the load acting on 20
This is to prevent bending.

Further, as shown in FIG. 1, a plurality of guide rails 23 are attached to these shelf plates 17, 18, 19, 20 so as to straddle the through holes 21.
The depth of the shelf plates 17 and 18 is set smaller than that of the shelf plates 19 and 20.

Further, as shown in FIGS. 6 and 7, the shelf boards 17 and 20 are integrally formed with a backboard mounting portion 24 so as to be substantially orthogonal to the surface on which the guide rail 23 is mounted. Has been done. A plurality of rectangular through holes 24a are formed in the backboard mounting portion 24, and a backboard 26 having a plurality of connectors 25 mounted thereon is screwed and fixed so as to close the through holes 24a.

As shown in FIG. 1, the shelf board 17 is provided with its backboard mounting portion 24 facing downward, and the shelf board 20 is provided with its backboard mounting portion 24 facing upward. Further, a transmitting board 27 and a receiving board 28 are mounted on the first shelf 12. The transmitting board 27 or the receiving board 28 is
A low-frequency circuit section formed on a printed wiring board is constructed by attaching a high-frequency circuit section and a surface plate housed in a metal case to the low-frequency circuit section, as best shown in FIG. A connector 29 for connecting to the connector 25 of the backboard 26 is mounted on the printed wiring board constituting the above.

In the transmitting board 27 or the receiving board 28, the upper and lower side edges of the printed wiring board constituting the respective low frequency circuit parts are arranged along the guide rails 23 of the shelves 17, 18, 19, 20. Inserted in the first shelf 12, the connector 25 of the backboard 26 has a transmitter board 27 or a receiver board 28.
The connector 29 is fitted to be mounted on the first shelf 12.

In FIG. 1, reference numeral 30 denotes an L-shaped support plate integrally formed with a horizontal plate 30a and a vertical plate 30b,
A plurality of bandpass filters 31 are mounted on the horizontal plate 30a of the L-shaped support plate 30, and a circulator 32a is attached to the front surface (the surface on the horizontal plate 30a side) of the vertical plate 30b of the L-shaped support plate 30. The microwave three-dimensional circuit section 32 including the same is attached, and these configure the independent demultiplexer section unit 33.

In the duplexer unit 33, the horizontal plate 30a to which the bandpass filter 31 is attached is located between the shelves 18 and 19, and the vertical plate 30b to which the microwave circuit unit 32 is attached. Backboard 26
The first shelf 12 is inserted from the back side of the first shelf 12 so as to be located on the back side thereof, and is attached by screws or the like. The duplexer unit 33 is attachable to and detachable from the first sheuffle 12 by removing a screw or the like.
Although not shown, the band pass filter 31 and the transmission board 27 or the reception board 28 are connected by a coaxial cable on the front side thereof.

The bandpass filter 31 is located between the shelves 18 and 19 because the bandpass filter may be replaced for maintenance or the like, without removing other members or other means. , So that it can be exchanged.

In order to facilitate understanding of the structure of the main part of this embodiment, the structure in which the duplexer unit 33 is mounted in FIG. 8 and the shelf board 17 is removed is shown in FIGS. 9 and 10. FIG. 11 shows the configuration in which the transmitter 27 and receiver 28 are not mounted, and FIG. 11 shows the configuration in which the transmitter 27 and receiver 28 are mounted.

As shown in FIG. 11, the first shelf 12 has a transmitting board 27 mounted on an upper stage composed of shelf boards 17 and 18, and is composed of shelf boards 19 and 20. The receiving board 28 is mounted on the lower stage.

2 and 3, the first shelf 12 is shown.
The second to fourth shelves 13, 14, 1 arranged on the lower side of
5 is constructed by horizontally installing a pair of upper and lower shelves across a pair of upright side plates. These 2nd-4th
The upper and lower shelves of the shelves 13, 14, and 15 are configured similarly to the shelves 19 and 20 of the first shelf 12 described above, and one of the upper and lower shelves has a backboard mounting portion. A backboard having a connector mounted thereon is attached to the backboard attachment portion.

In the second shelf 13, a plurality of control boards 34 each having a printed wiring board on which electronic components and the like are mounted are inserted, and inside the third shelf 14, electronic components and the like are also mounted on the printed wiring board. A plurality of modulation / demodulation boards 35 are mounted, and in the fourth shelf 15, a plurality of power boards 36, which are also formed by mounting electronic components on a printed wiring board, are mounted.

This wireless device has substantially the same function as that of the wireless device shown in FIG.
The system has one system as a system and a standby system, and the size of the rack 11 complies with international standards such as ETSI. In addition, in FIG. 2, the rightmost transmission board 2
7, the rightmost receiving board 28, the rightmost and fourth modulation / demodulation boards 35, and the rightmost power board 36 are standby systems,
The rest is the active system, and the control panel 34 is shared by the active system and the standby system.

According to this embodiment, the band-pass filter 31 is mounted on the horizontal plate 30a of the L-shaped support plate 30 formed by integrally forming the horizontal plate 30a and the vertical plate 30b, and the three-dimensional structure is provided on the front surface of the vertical plate 30b. The circuit unit 32 is attached to form a duplexer unit 33, and the duplexer unit 3
3 was attached to the first shelf 12 from the back side, and the front side of the three-dimensional circuit section 32 in the first shelf 12 and the upper side of the bandpass filter 31 was used for mounting the transmission board 27.

Therefore, more boards can be accommodated in the same volume, high-density mounting is achieved, and it is not necessary to use a separate rack as in the prior art as shown in FIG. The miniaturization of can be achieved.

Further, the transmitting board 27 is provided above the horizontal plate 30a on which the bandpass filter 31 is mounted, and the receiving board 2 is provided below the horizontal board 30a.
8 is mounted, and since the transmission board 27 that consumes a large amount of power and generates a large amount of heat is located at the top, heat from the transmission board 27 does not adversely affect other receiving boards 28 and the like.

Further, since the demultiplexer unit 33 is constructed independently and is attachable / detachable to / from the first shelf 12, when the three-dimensional circuit unit 32 or the bandpass filter 31 is replaced due to the change of the used frequency or the like. They can be replaced collectively and the work is extremely simple.

Further, rectangular through holes 21 are formed in the shelf plates 17, 18, 19, 20 constituting the shelves 12, 13, 14, 15 and the vicinity of the edge of the through holes 21 is bent substantially vertically. Since the bent portion 22 is formed by using the bent portion 22, the reinforcement can be achieved without using a conventional reinforcing member as a separate component, the number of component parts is reduced, and the number of working steps is small.

Further, a backboard mounting plate 24 having a rectangular through hole 24a which is substantially parallel to the vertical plate 30b and which is located on the front surface side of the three-dimensional circuit portion 32 of the duplexer unit 33 is attached to the shelf. Since the backboard 26 is formed integrally with the shelves 17 and 20 constituting it and the backboard 26 is attached to the backboard mounting plate 24 so as to close the through hole 24a, a conventional reinforcing member as a separate component is provided. The backboard 26 can be reinforced without using it, the number of constituent parts can be reduced, and the work man-hour can be reduced.
The connector 25 and the guide rails 23 of the shelves 17, 18, 19, 20 can be easily aligned with each other, which also reduces the man-hours required for manufacturing.

[0043]

Since the present invention is configured as described above, it is possible to achieve high-density mounting of the device, reduce the number of parts, and reduce the number of work steps, and to configure the wireless device in a compact and inexpensive manner. Has the effect of becoming.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing a main configuration of an embodiment of the present invention.

FIG. 2 is a front view showing the overall configuration of the embodiment of the present invention.

FIG. 3 is a cross-sectional view showing the overall configuration of an embodiment of the present invention.

FIG. 4 is a plan view showing a configuration of a shelf board according to an embodiment of the present invention.

FIG. 5 is a cross-sectional view showing a configuration of a shelf board according to an embodiment of the present invention.

FIG. 6 is a front view of the vicinity of a backboard according to an embodiment of the present invention.

FIG. 7 is a cross-sectional view of the vicinity of a backboard according to an embodiment of the present invention.

FIG. 8 is a front view showing the configuration of the shelf in which the duplexer unit according to the embodiment of the present invention is mounted and a part of the shelf board is removed.

FIG. 9 is a front view showing the configuration of the shelf in a state in which the transmitting board and the receiving board are not mounted in the embodiment of the present invention.

FIG. 10 is a plan view showing a configuration of a shelf in a state in which a transmitting board and a receiving board are not mounted in the embodiment of the present invention.

FIG. 11 is a front view showing a configuration in which a transmitting board and a receiving board are mounted in the embodiment of the present invention.

FIG. 12 is an exploded perspective view showing an overall configuration of a conventional technique.

FIG. 13 is a front view showing the overall configuration of a conventional technique.

FIG. 14 is a cross-sectional view showing the overall configuration of a conventional technique.

FIG. 15 is a cross-sectional view showing the structure of a conventional shelf board.

FIG. 16 is a cross-sectional view showing a configuration in the vicinity of a conventional backboard.

FIG. 17 is a front view showing the overall configuration when a function of the conventional technique is added.

[Explanation of symbols]

 11 rack 12 first shelf 16 side plate 17, 18, 19, 20 shelf plate 21 through hole 22 reinforcing portion 23 guide rail 24 backboard mounting portion 24a through hole 25 connector 26 backboard 27 transmitter board 28 receiver board 29 connector 30 L type Support plate 30a Horizontal plate 30b Vertical plate 31 Bandpass filter 32 Microwave three-dimensional circuit unit 33 Divider unit unit

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Manabu Miyamoto, 1015 Kamiodanaka, Nakahara-ku, Kawasaki-shi, Kanagawa, within Fujitsu Limited

Claims (4)

[Claims] 1. A shelf in which a plurality of shelf plates each having a guide rail are horizontally installed across a pair of upright side plates, and a plurality of connectors provided near the back side of the shelf are mounted. A backboard, a duplexer section having a three-dimensional circuit section connected to the antenna and a bandpass filter, a circuit containing a high-frequency circuit inside the backboard section, and a connector fitted to the connector of the backboard. In a wireless device having a plurality of panel units inserted along the guide rail from the front side of the shelf, an L-shaped support plate formed by integrally forming a horizontal plate and a vertical plate. The bandpass filter is mounted on a horizontal plate, and the three-dimensional circuit unit is mounted on the front surface of the vertical plate on the horizontal plate side to form a duplexer unit. Is attached to the shelf from the back side so that the bandpass filter is located directly below one of the shelf boards of the shelf and the three-dimensional circuit section is located on the back side of the backboard. A shelf structure of a wireless device characterized by the above. 2. The wireless device according to claim 1, wherein the board unit is mounted vertically with a horizontal plate to which the bandpass filter of the demultiplexer unit is attached sandwiched therebetween. Shelf structure. 3. A shelf plate constituting the shelf is formed with a rectangular through hole, and an edge portion of the through hole is bent substantially at a right angle to a side opposite to a side where the board unit is mounted. The shelf structure for a wireless device according to claim 1, wherein: 4. A backboard mounting plate having a rectangular through hole, which is substantially parallel to the vertical plate and is located on the front side of the three-dimensional circuit unit of the demultiplexer unit, is attached to the shelf plate. A shelf structure of a wireless device, wherein the backboard is integrally provided so as to be substantially orthogonal to each other, and the backboard is attached to the backboard attachment plate so as to close the through hole.