JP3634615B2 - Unit for communication equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a so-called bookshelf mounting type communication device unit in which a plurality of printed wiring boards are arranged in parallel in an apparatus housing, and these printed boards are inserted and removed from the front surface of the apparatus housing.
[0002]
[Prior art]
FIG. 4 shows “Harada et al .:“ Digital communication device high-density packaging method ”, NTT R & D, Vol. 150-160, ”is a perspective view showing an outline of a printed circuit board housing structure in a conventional communication device unit. Referring to FIG. 40, 40 is an electrical / optical connector. 41 is a printed circuit board on which an electronic component 43 including an optical component module is mounted 42. This printed circuit board 42 is inserted and removed in the direction of the arrow AB from the front side of the apparatus housing (not shown). When inserted, the signal is connected to the backboard 40 via the electrical / optical connector 41. A plurality of printed circuit boards 42 are arranged in parallel in the left-right direction, and the printed circuit board is connected via the wiring of the backboard 40. Signal connection is made between 42 or other units.
[0003]
In the communication device unit having such a configuration, the number of signal terminals is determined by the number of electrical / optical connectors 41 that can be mounted on the backboard 40. In other words, the number of signal terminals depends on the number of electrical / optical connectors 41 that can be mounted. Will be constrained. In recent years, an increase in the number of signals / power terminals input / output from the printed circuit board has been required due to the increase in the speed and the number of terminals of the electronic component 43 mounted on the printed circuit board 42. However, in the conventional communication device unit described above, the number of signal input / output terminals is not increased because the position of the connector for connecting signals between printed circuit boards and between units is limited only to the backboard. It has become possible.
[0004]
In order to solve this problem, a communication device unit provided with an input / output signal terminal portion on the front side of the unit is, for example, S.I. Koike et. al “High-Speed Signal Transmission at the Front of a Bookshelf Packing System,” IEEE CPMT Transactions on Components and Packaging. 353-360, (1997). FIG. 5 is a perspective view showing an outline of a connection structure between printed circuit boards in the communication device unit proposed here.
The electrical / optical connector 44 is mounted on the front portion of the printed circuit board 42, and the electrical / optical connectors 44 are connected by a front connection electrical / optical wiring cable 45. As described above, since signal connection is also performed on the front surface of the printed circuit board 42, the number of signal input / output terminals can be increased.
[0005]
[Problems to be solved by the invention]
However, in this conventional communication device unit, since signal connection is performed on the front side of the communication device unit, in a communication device rack that normally accommodates a plurality of communication device units, maintenance is performed when one unit fails. Therefore, when the door of the communication device rack is opened, problems such as an increase in electromagnetic noise radiation in the device installation facility occur. In addition, when the printed circuit board is replaced, the front connection electrical / optical wiring cable 45 is required to be attached / detached a plurality of times per printed circuit board, which causes a problem that the work efficiency of the apparatus operator is poor.
[0006]
The present invention has been made in view of the above-described conventional problems. The object of the present invention is to maintain a shielding effect similar to that of a conventional standard unit against electromagnetic noise radiation generated from a communication device unit. Another object of the present invention is to provide a communication device unit that improves the work efficiency of the device operator and increases the number of input / output terminals for signals on the printed circuit board.
[0007]
[Means for Solving the Problems]
In order to achieve this object, a communication device unit according to claim 1 of the present invention stores a plurality of printed wiring boards on which electronic components are mounted, and the plurality of printed wiring boards arranged in parallel. A communication device unit in which the printed wiring board can be freely inserted and removed from the front surface of the device housing and connected between the printed wiring boards, at least above and below the printed wiring board. A connector for wiring between printed wiring boards is attached to either of them, and an insertion / removal means for inserting / removing the connector is provided, and the operation of the insertion / removal means is performed from the front side of the apparatus housing.
Therefore, the increase in the number of connectors increases the number of terminals per printed circuit board, and the operation of the insertion / extraction means is performed from the front side of the apparatus housing, so that electromagnetic noise is reduced and the communication apparatus operator Work efficiency is improved.
According to a second aspect of the present invention, there is provided the communication device unit according to the first aspect, wherein the communication device unit is operated from the outside of the front surface of the housing and is movable in the front-rear direction and meshes with the rack. The insertion / extraction means comprises a screw rod having a pinion at one end and a screw portion formed at the other end, and a moving member having a screw portion that is screwed with the screw portion of the screw rod and having a connector attached thereto, The screw rod extends in the vertical direction perpendicular to the rack and is rotatably supported around the axis, and the moving member is supported by the screw rod and is movable in the vertical direction.
Therefore, when the rack is operated from the outside of the front surface of the housing and moved to the front side, the screw rod rotates, the moving member moves along the screw rod, and the connection between the connectors is released.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 is a perspective view of a communication device unit according to the present invention, FIG. 2 is a view taken along the arrow II in FIG. 1, FIG. 3A is an enlarged view of a portion III (a) in FIG. 2, and FIG. 3 is a cross-sectional view taken along line III (b) -III (b) in FIG.
In FIG. 1, a communication device unit generally indicated by reference numeral 1 is provided with a U-shaped frame 2 having upper and lower, front and rear lower portions opened. The space in the frame 2 includes a board storage space 3 in which a printed circuit board 12 to be described later is stored, an insertion / extraction means storage space 4 newly provided above the board storage space 3, and an insertion / extraction means storage space 4. It is formed by the wiring storage space 5 provided in the rear. A front plate 6 is attached to the front opening of the frame 2, and an opening 6 a for inserting and removing the printed circuit board 12 is formed at a lower portion of the front plate 6, that is, a portion corresponding to the substrate storage space 3. A plurality of circular insertion / extraction holes (not shown) through which racks 21 to be described later are inserted / extracted are formed in the left / right direction at a portion corresponding to the section 4.
[0009]
A backboard 7 is provided behind the front plate 6 corresponding to the opening 6a, and a plurality of electrical / optical connectors 8 arranged in parallel in the left-right direction are mounted on the backboard 7. The upper opening of the frame 2 is covered with a protective plate 10, and a guide plate 11 is attached to the lower opening of the frame 2. A printed circuit board 12 is placed on the surface of the guide plate 11 in the front-rear direction (in the direction of arrows AB). ) Is slidably guided to form a guide groove 11a.
[0010]
A plurality of printed circuit boards 12 are provided in the left-right direction, an electronic component 13 including an optical module component is mounted on one surface, and a latch lever 18 is attached to the front end. The printed circuit board 12 is attached with a floating plate 17 having external dimensions that are substantially the same as each other. The electrical / optical connector 8 of the backboard 7 described above is attached to the rear end of the floating plate 17. The electrical / optical connector 14 to be coupled to the electrical / optical connector 30 to be described later is mounted on the upper end portion. The printed circuit board 12 is inserted from the opening 6a of the front plate 6 and is slid in the direction of arrow B along the guide groove 11a of the guide plate 11, so that the printed circuit board 12 is stored in the substrate storage space 3, and the electrical / optical connector 14 is connected. Connected to the electrical / optical connector 8 of the backboard 7. As the connection structure and insertion / extraction means between the electrical / optical connector 14 of the backboard 7 and each printed circuit board 12, well-known ones are used.
[0011]
Next, an insertion / extraction means for inserting / extracting the connector, which is a feature of the present invention, will be described with reference to FIGS.
The insertion / extraction means 20 includes a rack 21 extending in the front-rear direction, a pair of screw rods 23, 23 extending in the up-down direction (arrow EF direction), and a moving member 29 to which the electrical / optical connector 30 is attached. It is generally composed of The rack 21 is slidably supported in the front-rear direction by a pair of front and rear holding members 24, 24 attached to the protection plate 10 in the upper part of the insertion / extraction means storage space 4, and is inserted / removed at a front end so as to be orthogonal to the rack 21. A lever 22 is attached, and the insertion / extraction lever 22 is positioned outside the front plate 6.
[0012]
A pair of screw rods 23, 23 provided in the front-rear direction extend vertically in the upper and lower ends 24 a, 24 a formed by bending the pair of holding members 24, 24 perpendicular to the rack 21. Thus, it is supported so as to be rotatable about the axis. That is, as shown in FIG. 3 (b), pins 26, 26 are implanted in the upper and lower ends 24 a, 24 a of the holding member 24 so as to face each other, and these pins 26, 26 are connected to both ends of the screw rod 23. The screw rod 23 is rotatably supported by the holding member 24 by being formed on the surface and engaging with the blind hole. A pinion 23 a that meshes with the rack 21 described above is formed on the upper portion of the screw rod 23, and a male screw portion 23 b is formed on the lower portion.
[0013]
28 and 28 are female screws that are screwed into the male screw portions 23b and 23b of the pair of screw rods 23 and 23, and both ends of the moving member 29 are attached to the female screws 28 and 28, respectively. Therefore, the moving member 29 is supported by the screw rods 23 and 23 so as to be movable in the vertical direction so as to be horizontally mounted on the screw rods 23 and 23 provided in a pair in the front-rear direction. As shown in FIG. 2, an electrical / optical connector 30 is attached to the lower part of the moving member 29 so as to face the electrical / optical connector 15 of the printed circuit board 12 described above. A plurality of insertion / extraction means 20 are provided corresponding to each printed circuit board 12 in the insertion / extraction means storage space 4, and a plurality of electrical / optical connectors 30 provided corresponding to each printed circuit board 12 are provided in the wiring storage space 5. They are connected by electrical / optical wiring 31 to be housed. Therefore, when the electrical / optical connectors 15 and 30 are coupled, the number of connectors is increased and the number of terminals per printed circuit board is increased, so that the number of signal input / output terminals can be increased.
[0014]
Next, the operation of inserting / removing the electrical / optical connectors 15 and 30 by the insertion / extraction means 20 having such a configuration will be described with reference to FIGS.
When the insertion / extraction lever 22 is pulled in the direction of arrow A, the rack 21 also slides in the A direction. Therefore, the screw rod 23 rotates clockwise through the pinion 23a meshing with the rack 21, and is screwed onto the external thread 23b. The moving member 29 rises in the direction of arrow E via the mating female screw 28, and the electrical / optical connectors 15 and 30 are disconnected. Thus, the operation efficiency of the communication device operator is improved because the electrical / optical connectors 15 and 30 are disconnected at the same time by simply pulling the insertion / extraction lever 22. In addition, the electrical / optical connectors 15 and 30 can be disconnected by pulling the insertion / extraction lever 22 located outside the front plate 6, and the front plate 6 is not opened. An increase in electromagnetic noise radiation in the installation facility can be suppressed.
[0015]
After disconnecting the coupling of electrical / optical connector 15, 30 and by operating the latch lever 18 and pull out the printed circuit board 12 from the insertion hole of the front plate 6, and an electrical / optical connector 14 of the printed circuit board 12, the back board 7 The electrical / optical connector 8 is disconnected. When the maintenance of the printed circuit board 12 removed from the communication device unit 1 is completed, the printed circuit board 12 is again inserted into the communication device unit 1 from the insertion / extraction hole of the front plate 6 and the electrical / optical connectors 8 and 14 are coupled. When the insertion / extraction lever 22 is pushed in the direction of arrow B, the rack 21 also slides in the direction B. Therefore, the screw rod 23 rotates counterclockwise via the pinion 23a meshed with the rack 21, and the male thread 23b The moving member 29 is lowered in the direction of arrow F via the screwed female screw 28, and the electrical / optical connectors 15 and 30 are coupled.
[0017]
In the present embodiment, the electronic component mounted on the printed wiring board is configured to include the optical module, but the optical module may not be included.
[0018]
【The invention's effect】
As described above, according to the first and second aspects of the invention, the number of terminals per printed circuit board increases as the number of connectors increases, and the insertion / extraction means is operated from the front side of the apparatus housing. By doing so, the electromagnetic noise is reduced and the work efficiency of the communication device operator is improved.
[Brief description of the drawings]
FIG. 1 is a perspective view of a communication device unit according to the present invention.
FIG. 2 is a view taken in the direction of arrow II in FIG.
3 (a) is an enlarged view of a portion III (a) in FIG. 2, and FIG. 3 (b) is a sectional view taken along line III (b) -III (b) in FIG.
FIG. 4 is a perspective view of a conventional communication device unit.
FIG. 5 is a perspective view showing a second example of a conventional communication device unit.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Communication apparatus unit, 3 ... Printed circuit board storage space, 4 ... Connector storage space, 7 ... Back board, 8, 14, 15, 30 ... Electrical / optical connector, 12 ... Printed circuit board, 13 ... Optical component module included Electronic parts, 20 ... Inserting / extracting means, 21 ... Rack, 22 ... Lever, 23 ... Screw rod, 23a ... Pinion, 23b ... Male thread part, 28 ... Female screw, 29 ... Moving member.

Claims (2)

A plurality of printed wiring boards on which electronic components are mounted, and an apparatus housing that stores and arranges the plurality of printed wiring boards in parallel, and allows the printed wiring board to be inserted and removed from the front surface of the apparatus housing. In the communication device unit in which the printed wiring boards are connected by wiring, a connector for wiring between the printed wiring boards is attached to at least one of the upper and lower portions of the printed wiring board, and this connector is inserted and removed. A communication device unit comprising an insertion / extraction means, wherein the insertion / extraction means is operated from the front side of the device housing. 2. The communication device unit according to claim 1, wherein the rack is operated from the outside of the front surface of the housing and is movable in the front-rear direction, and a screw rod having a pinion engaged with the rack at one end and a threaded portion formed at the other end. And a moving member having a threaded portion that engages with a threaded portion of the threaded rod and having a connector attached thereto, the insertion / extraction means is configured, and the threaded rod extends in the vertical direction perpendicular to the rack, and the axis line The communication device unit is characterized in that it is supported so as to be rotatable around the center, and the moving member is supported by the screw rod so as to be movable in the vertical direction.

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