JP4419470B2 - Optical fiber cable wiring accommodation structure, optical connector accommodation method, and optical connector connection method - Google Patents

Description

  INDUSTRIAL APPLICABILITY The present invention is applicable to all devices using optical fiber cables such as routers, from optical home network devices such as FTTH (Fiber To The Home) to large devices of IDC center (Internet Data Center) devices. The present invention relates to a cable wiring housing structure and an optical connector housing case, and in particular, it is configured so that a dummy unit having a size corresponding to the height of the mounting unit can be mounted in an empty slot as appropriate based on the mounting slot width of the shelf. An optical fiber cable housing structure, an optical connector housing case, and an optical connector housing method for a communication device in which an optical fiber cable is pre-wired to a dummy unit according to future needs, and the optical fiber cable tip is held and fixed in a protected state. And an optical connector connection method The

  With the recent increase in broadband networks, there is an increasing need for communication devices that can balance system expandability and initial cost at a high level, and that also consider global environmental issues.

  FIG. 11 is a perspective view showing an optical fiber cable wiring housing structure of a conventional communication device. In the figure, a rack 10 has two units of shelves 2 mounted on the upper and lower sides, and an optical fiber cable 1 is connected to each shelf 2 from below via a cable duct 3 to each printed board unit (actual unit) 7. Connected. The blindfold board 4 is not mounted with a printed board unit (actual machine unit) 7 and blocks a blank area in anticipation of future expansion with a blindfold board.

  On the other hand, the optical fiber cable for expansion 9 provided with the optical connector 8 at the tip is wired in preparation for the future expansion of the printed board unit (actual machine unit) 7, and the rack 10 in the vicinity of the corresponding shelf 2. Alternatively, it is held near the rack 10. When the printed board unit (actual machine unit) 7 is added, the blind board 4 is removed, the printed board unit (actual machine unit) 7 is added, and the necessary extension optical fiber cable 9 is added. Wiring is performed through the cable duct 3 to the position of the unit) 7 and the corresponding optical connector 8 is engaged with the joint portion of the corresponding printed board unit (actual machine unit) 7 (for example, see Patent Document 1).

Reference numeral 5 denotes an ejector for attaching and detaching the printed board unit (actual machine unit) 7. Reference numeral 6 denotes a forced air cooling fan.
Japanese Patent Laid-Open No. 2002-50887 (FIGS. 17 and 18)

  The conventional optical fiber cable wiring housing structure has the following problems.

  First, the conventional fiber optic cable wiring housing structure requires more equipment and fiber optic cables than necessary in order to take into account the expanded configuration from the beginning of the introduction of the communication device, resulting in a large initial cost. . Moreover, due to unexpected changes such as a sudden change in demand, there may be cases where there is an excess or shortage of equipment, etc., which has a large risk and lacks system flexibility.

  Secondly, when only the optical fiber cable is wired in advance, it is necessary to secure a minimum bending radius to prevent breakage in the optical fiber cable, and a holding adapter and a fixing panel are newly provided for each connector type. The mounting efficiency has been reduced and it has become expensive.

  Thirdly, when only the fiber optic cable is wired in advance, the fiber optic cable must be dust-proof at the tip of the fiber optic cable according to the shape of the optical connector in order to prevent seizure due to adhesion of dust, etc. and to protect the communication characteristics. There was a complicated configuration.

  Fourth, when only the optical fiber cable is routed in advance, the optical connector position differs when the printed board unit (actual machine unit) is mounted, and the cable length is insufficient or the extra length cannot be processed. There was a problem.

  Fifth, when the forced air cooling method using a fan or the like is employed, problems arise such that if air is provided in adjacent unit mounting locations in the same shelf, the air cooling effect is reduced and dust prevention measures cannot be taken.

  Sixth, in the case of adopting an electromagnetic shield structure by the unit, providing a space at the unit mounting location in the same shelf may reduce the electromagnetic shield effect and cause problems such as malfunction of other devices.

  Seventh, when performing a fire prevention structure with a unit, providing a space in the unit mounting location in the same shelf causes problems such as flame diffusion when a fire occurs.

  Eighth, in order to use a printed board unit (actual machine unit) interchangeably with a dummy unit, it is difficult to provide a dummy unit fixing protrusion on the shelf side.

  The present invention has been made to solve the above-mentioned problems, and it becomes possible to route the optical fiber cable in advance, so that the length of the optical fiber cable does not become excessive and insufficient, and further, the mounting space of the unit or rack is reduced. It is an object of the present invention to provide an optical fiber cable wiring housing structure, an optical connector housing case, an optical connector housing method, and an optical connector mounting method for a communication device that is effectively used.

The first invention for solving the aforementioned problems is a communication apparatus configured to Ru attaching a dummy unit for each empty slot on the shelf for unit expansion, the dummy unit, engages the book-type shelf guide rail A slide rail part to be joined, a ventilation duct part that forms a duct shape through a ventilation hole in the vertical direction, and an optical connector accommodation case that accommodates an optical connector to be connected to the expansion unit in advance, on the front side of the dummy unit Is a concave-shaped structure that can accommodate the removable optical connector housing case, and the optical connector housing case is an optical fiber cable connector for expansion that is pre-wired according to the need for future expansion of the printed board unit. It is an optical fiber cable wiring housing structure configured to be held and fixed by closing in the housed state.

According to the first aspect of the invention, the optical fiber cable holding position can be optimized, so that when connecting to the actual machine using the pre-wired optical fiber cable, the length of the optical fiber cable does not occur, so that the construction is easy. Optical fiber cable wiring accommodation structure that can provide optical fiber cable wiring accommodation structure , and optical connector housing case can be attached / detached independently of dummy unit. Can provide.

According to a second aspect of the present invention, the optical connector housing case is fixed so as to face each other on the inner surface side of the resin sheet folded in a U shape so as to hold the optical fiber cable for expansion by pressing the pair of restoring elastic members. The overlapping portion is configured to be openable and closable due to the resilience of the resin sheet, and a recess is provided in a part of the restoring elastic member to disperse and arrange the extension optical fiber cable. It is an optical fiber cable wiring accommodation structure.

According to the second aspect of the present invention , an optical connector housing case that is safe without fear of breakage of the optical fiber cable can be provided even if the optical fiber cable protector is made of a lightweight member such as a resin and accidentally dropped during handling. it can.

According to a third aspect of the present invention, when a printed board unit is added to an empty slot of a unit expansion shelf of a communication device, a duct shape is formed through a slide rail portion that engages with a guide rail of a book-type shelf and a vertical vent hole. A fiber optic cable with an optical connector is pre-wired to a dummy unit having a ventilation duct portion that forms an optical connector and an optical connector housing case that houses an optical connector that is connected to the expansion unit in advance according to the need for future expansion. An optical connector housing method comprising:
Dispersing and arranging the optical connectors in the recesses of the elastic member provided on the inner surface side of the optical connector housing case that houses the optical connectors;
Holding the optical fiber cable by taking out the optical fiber cable from a mating surface between elastic materials; and
Attaching the optical connector housing case to a removable concave structure on the front side of the dummy unit;
Engaging the slide rail portion provided in the dummy unit with the guide rail of the book type shelf for each empty slot of the book type shelf for unit expansion of the communication device.

According to the third aspect of the present invention, since common products can be handled in the same procedure regardless of the type of optical fiber connector, it is possible to previously wire difficult optical fiber cables, and the initial capital investment cost Can be provided.

According to a fourth aspect of the present invention, when a printed board unit is added to an empty slot of a unit expansion shelf of a communication device, a duct shape is formed through a slide rail portion that engages with a guide rail of a book-type shelf and a vertical vent hole. An optical connector for taking out the optical connector of the optical fiber cable for expansion from a dummy unit having a ventilation duct portion forming the optical connector and an optical connector housing case for housing an optical connector to be connected to the expansion unit in advance, and connecting to the printed board unit A connection method,
The optical connector housing case is taken out by releasing the removal prevention of the removable optical connector housing case provided on the front side of the body portion of the dummy unit previously inserted in the empty slot for unit expansion, and removing the optical connector housing case. Taking out the optical fiber cable for expansion accommodated in the connector storage case;
Removing the dummy unit from the empty slot, and instead adding a printed board unit;
Connecting the optical connector to the optical connector receiving portion of the printed board unit.

According to the fourth aspect of the present invention , the optical connector can be easily and flexibly adapted to change the system, can be easily separated even when the optical connector housing case and the dummy unit main body are discarded, and can reduce the load on the global environment. Can provide a method.

The effects described below can be considered in the optical fiber cable wiring accommodation structure, the optical connector accommodation case, the optical connector accommodation method, and the optical connector connection method of the present invention.
(1) Optical fiber cables that are difficult to handle can be pre-wired, reducing initial capital investment costs, and making system changes flexible and easy.
(2) Because it is possible to handle common products in the same procedure regardless of the type of optical fiber connector, it is user-friendly and can greatly reduce costs.
(3) The optical fiber cable protector can be attached and detached independently of the unit, and the device mounting density can be improved by minimizing the access area to the optical fiber cable by hand.
(4) By configuring the optical fiber cable protector with a lightweight material such as resin, there is no risk of damaging the optical fiber cable even if it is accidentally dropped during handling.
(5) Since the optical fiber cable holding position can be optimized, the length of the optical fiber cable does not become excessive or short when connecting to the actual machine using the pre-wired optical fiber cable, making the work easier.
(6) Since an expensive relay adapter is not used to hold the optical fiber cable, the cost can be greatly reduced. In addition, since a fixed space corresponding to each of the various connectors is not required, the unit and rack mounting space can be effectively used.
(7) Since the dust-proof cap attached to the optical fiber cable can be used as it is, no new dust-proof structure or the like is required, so the cost can be greatly reduced.
(8) The removable optical fiber cable protector is separated from the main body, and can be easily separated even when the dummy unit main body is discarded, reducing the burden on the global environment.
It has a very beneficial effect on the industry.

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

  In addition, in order to make an understanding easy through the whole figure, the same code | symbol shall be attached | subjected and shown to the same location.

  FIG. 1 is a perspective view showing a fiber optic cable wiring housing structure of a communication device according to a first embodiment of the present invention. A dummy unit having a size corresponding to the height of the mounting unit with reference to the mounting slot width of the shelf 24. FIG. 21 is configured so that it can be appropriately mounted in an empty slot. Further, an extension optical fiber cable 9 is wired in advance to each dummy unit 21 according to future needs, and the cable end is held and fixed in a protected state. The dummy unit 21 includes a slide rail portion (upper) 18 and a slide rail portion (lower) 12 configured vertically, a ventilation duct portion 19, an electromagnetic shield portion 20, and an optical connector housing case 15. Is configured such that a finger can be placed on the finger rest 16 and pulled out and attached.

  The slide rail portion (upper) 18 and the slide rail portion (lower) 12 are engaged with guide rails 23 provided above and below the unit mounting slot of the shelf 24 to guide the dummy unit 21 to a predetermined position. In addition, a vent hole is provided in the center of the slide rail portion (upper) 18 and the slide rail portion (lower) 12, and a concave portion is provided as a finger hook portion 16 at the front, so that the finger hook portion 16 can be moved up and down by material elasticity. The shelf engaging protrusion (upper) 17 and the shelf engaging protrusion (lower) 13 are formed in the unit engaging indentation 22 on the shelf 24 side toward the outside of the slide rail part (upper) 18 and the slide rail part (lower) 12. Configure to engage. A cable slit 11 is provided next to the finger hook 16 so that the extension optical fiber cable 9 does not protrude from the front surface of the dummy unit 21.

  The ventilation duct portion 19 guides the exhaust of the shelf 24 in the vertical direction without escaping to the other side, forms a duct shape from the left and right side walls so as to maintain appropriate ventilation resistance, and configures an optical connector housing case 15 region on the front side. . In addition, a protrusion 14 for preventing lateral jump-out is provided on the end face of the side wall so that the optical connector housing case 15 does not easily jump to the front face.

  The electromagnetic shield part 20 is a metal having a spring property around a frame opening disposed on the surface of the back panel that radiates from a back panel (not shown) that is on the back side of the shelf 24 and is conductively fitted to the dummy unit 21. Cover and shield the box surrounded by.

  The optical connector housing case 15 is located on the front side of the dummy unit 21, and is housed in a space configured in a concave shape that can be slid in and out. The details of the optical connector housing case 15 will be described later with reference to FIGS.

  FIG. 2 is an explanatory view showing a separated state of the optical connector housing case. In the figure, the optical connector housing case 15 shows a state in which a finger is put on a detachable finger hooking portion 25 provided on the upper and lower sides and pulled out from the dummy unit 21 and attached.

  FIG. 3 is an exploded perspective view of the dummy unit. In the same figure, the body portion of the dummy unit forms a ventilation duct shape in the vertical direction at the fire wall 27, and forms a box-shaped electromagnetic shield portion 20 surrounded by metal on the back side of the dummy unit. The concave structure 26 on the front side of the unit forms a concave space for storing the optical connector housing case. Reference numeral 14 denotes a protrusion prevention protrusion for storing and locking the connector housing case in the above-described space portion, and 17 is a shelf engaging protrusion for sliding and mounting the dummy unit to an empty slot of the shelf. It is.

  FIG. 4 is an explanatory view showing the mounting / drawing structure of the optical connector housing case. In the same figure, the opening of the optical connector housing case 15 is mounted on the front side of the dummy unit 21, and the projection part of the knob 28 for pulling out the case is pinched so as to get over the protrusion 14 from the ventilation duct case and over the entire surface. Configure the drawer to be possible.

  FIG. 5 is a view showing an open state of the optical connector housing case in the second embodiment of the present invention. In the figure, an optical connector housing case includes an optical connector housing portion 30 provided with a recess for housing an optical connector in a central portion of a material 29 having elasticity, such as urethane, and a pair of members covering the whole. The resin sheet 31 folded in a U-shape is attached so as to face each other, and can be opened and closed by the elasticity of the resin sheet 31, and can be held by being closed in a state where the optical connector is accommodated.

  FIG. 6 is a cross-sectional view of the optical connector housing case. In the figure, in the optical connector housing case, the type and number of the maximum number of optical fiber cables for expansion 9 introduced into the printed board unit (actual machine unit) are placed at the same position as the printed board unit (actual machine unit). A holding structure that can be accommodated in the attached state is provided, and only the holding structure portion is separable. Reference numeral 32 denotes a radius / route regulating shape, which is required to secure a minimum bending radius in order to prevent the expansion optical fiber cable 9 from being broken.

  FIG. 7 is a cross-sectional view of a two-stage optical connector housing case. The optical fiber cable for expansion from the optical connector 8 provided in the optical connector housing portion 30 which is the other housing concave portion provided with the same configuration as the optical connector housing case shown in FIG. 9 is wired in the resin sheet opening / closing axis side cable housing space 34 so that the other optical connector housing portion 30 is not vertically cut.

  FIG. 8 is an explanatory diagram for connecting an optical connector when an actual unit is added in one embodiment of the present invention. In this figure, when a printed board unit (actual machine unit) 7 is added in place of a dummy unit, an optical fiber cable for extension 9 with an optical connector 8 is taken out from the optical connector housing unit, and each optical connector 8 is connected to a corresponding print. It connects to the optical connector receiving part 35 of the board unit (actual machine unit) 7.

  FIG. 9 is an operation flowchart of the optical connector accommodation method according to the third embodiment of the present invention. In this embodiment, the optical fiber cable is pre-wired to the dummy unit according to the future expansion needs.

  Hereinafter, the operation flow of FIG. 9 will be described with reference to FIGS.

  S1. An optical fiber cable for expansion corresponding to the mounting position of the printed board unit (actual machine unit) 7 necessary for future expansion is wired in advance.

  S2. The optical connectors 8 of the extension optical fiber cable 9 are distributed and arranged in the optical connector housing portion 30 of the optical connector housing case 15.

  S3. By closing the opening of the optical connector housing case 15, the expansion optical fiber cable 9 is held by the pressure between the pair of restoring elastic members (urethane members) 29.

  S4. The optical connector housing case 15 is attached to the dummy unit 21.

  FIG. 10 is an operation flowchart of the optical connector connecting method according to the fourth embodiment of the present invention. In this embodiment, when an existing facility is expanded, an optical fiber cable previously wired for expansion is connected to a printed board unit (actual machine unit).

  S5. The optical connector housing case 15 is taken out from the dummy unit 21.

  S6. The extension optical fiber cable 9 is taken out from the optical connector housing case 15.

  S7. The dummy unit 21 is discarded.

  S8. A printed board unit (actual machine unit) 7 is added to the corresponding part of the shelf on which the dummy unit 21 is mounted.

  S9. An optical fiber cable for expansion 9 corresponding to the printed board unit (actual machine unit) 7 is connected.

  The embodiment of the present invention described above is as follows.

(Supplementary Note 1) A communication device having a dummy unit mounting configuration for each empty slot of a unit expansion shelf, wherein the dummy unit includes a slide rail portion that engages with a guide rail of a book-type shelf, and a vertical ventilation. It has a ventilation duct portion that forms a duct shape through a hole, and an optical connector housing case that houses an optical connector that is connected in advance to the expansion unit. The optical connector housing case is pre-wired according to future needs. An optical fiber wiring housing structure characterized by being configured to be held and fixed by closing an optical connector of a certain optical fiber for expansion.
(Additional remark 2) The optical fiber wiring accommodation structure of Additional remark 1 WHEREIN: It was made into the concave shape structure which can accommodate the said optical connector accommodation case which can be removed in the front side of the said dummy unit.
(Additional remark 3) It is the optical connector accommodation case of the optical fiber for an expansion | deployment previously wired, Comprising: The resin-made sheet | seat which made the pair with the decompression | restoration elastic member and the said restoration | restoration elastic member, and was bent in the U-shape The optical connector housing case is configured to be fixed to the inner surface side of the resin sheet so as to face each other and to be able to open and close the overlapping portion due to the restoring property of the resin sheet.
(Additional remark 4) In the optical connector accommodation case of Additional remark 3, From the inner side of the said resin-made sheet | seat, the restoration | reformation elastic member which provided the multi-step hollow in the up-down direction, and the optical connector accommodated in the other hollow part An optical connector housing case, wherein a space for optical fiber wiring is provided on the opening / closing axis side of the resin sheet.

  (Additional remark 5) The optical connector accommodation case of Additional remark 3 WHEREIN: The said restoring elastic member is a urethane member, The optical connector accommodation case characterized by the above-mentioned.

(Additional remark 6) It is an optical connector accommodation method which pre-wires the optical fiber with an optical connector according to future expansion | extension necessity, Comprising: The elastic member provided in the inner surface side of the optical connector accommodation case which accommodates the said optical connector A step of distributing and arranging optical connectors in the recesses, a step of holding the optical fiber by protruding the optical fiber cable from a mating surface of elastic materials, and a step of attaching the optical connector housing case to a dummy unit. An optical connector housing method characterized by the above.
(Appendix 7) A connection method for connecting an optical connector of an optical fiber for expansion to the printed board unit when a printed board unit is added to an empty slot for unit expansion, which is inserted in the empty slot for expansion of the unit in advance. An optical fiber for expansion accommodated in the optical connector housing case by releasing the removable optical connector housing case provided on the front side of the body portion of the dummy unit and removing the optical connector housing case Removing the dummy unit from the empty slot, instead of adding a printed board unit, and connecting the optical connector to the optical connector receiving portion of the printed board unit. An optical connector connection method. (5)

  It can be used in all devices that use optical fibers, including routers, and can be applied to communication devices that anticipate future system expandability by performing prior fixed wiring of optical fiber cables with a simple structure.

It is a perspective view which shows the optical fiber wiring accommodation structure of the communication apparatus in 1st Embodiment of this invention. It is explanatory drawing which shows the isolation | separation state of an optical connector accommodation case. It is a dummy unit exploded perspective view. It is explanatory drawing which shows the insertion and extraction structure of an optical connector accommodation case. It is a perspective view which shows the open state of the optical connector storage case in one Embodiment of this invention. It is sectional drawing of an optical connector accommodation case. It is sectional drawing of the optical connector accommodation case of 2 steps | paragraphs structure. It is explanatory drawing which connects an optical connector at the time of real machine unit expansion. It is an operation | movement flowchart of the optical connector accommodation method in 3rd Embodiment of this invention. It is an operation | movement flowchart of the optical connector connection method in one Embodiment of this invention. It is a perspective view which shows the optical fiber wiring accommodation structure of the communication apparatus by a prior art.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Optical fiber cable 2 Shelf 3 Cable duct 4 Blindfold board 5 Ejector 6 Fan 7 Printed board unit (actual machine unit)
8 Optical connector 9 Optical fiber cable for expansion 10 Rack 11 Slit for cable 12 Slide rail part (bottom)
13 Shelf engagement protrusion (bottom)
14 Protrusion prevention protrusion 15 Optical connector housing case 16 Finger hook 17 Shelf engagement protrusion (upper)
18 Slide rail (top)
DESCRIPTION OF SYMBOLS 19 Ventilation duct part 20 Electromagnetic shield part 21 Dummy unit 22 Unit engagement hollow 23 Guide rail 24 Shelf 25 Detachable finger hook part 26 Recess structure 27 Fire barrier 28 Case drawer knob 29 Restoring elastic member (urethane member)
30 Optical connector housing part 31 Resin sheet
32 Radius route regulation shape 33 Dustproof cap 34 Resin sheet opening / closing axis side cable housing space 35 Optical connector receiving part

Claims (4)

A communication apparatus configured to every unit empty slot extension shelf Ru mounting a dummy unit,
The dummy unit accommodates an optical connector that accommodates a slide rail portion that engages with a guide rail of a book-type shelf, a ventilation duct portion that forms a duct shape through a vertical ventilation hole, and an optical connector that is connected in advance to the expansion unit. With a case,
The front side of the dummy unit has a concave structure that can accommodate the removable optical connector housing case,
The optical connector housing case is configured to be held and fixed by closing in a state in which the optical connector of the optical fiber cable for expansion that has been wired in advance according to the necessity of expansion of the future printed board unit is accommodated. Optical fiber cable wiring housing structure. The optical fiber cable wiring housing structure according to claim 1, wherein the optical connector housing case is an inner surface of a resin sheet that is bent into a U shape so as to hold the optical fiber cable for expansion by pressing between a pair of restoring elastic members. The resin sheet is fixed so as to face each other, and the overlapping portion is configured to be openable and closable due to the resilience of the resin sheet. An optical fiber cable wiring accommodation structure characterized by being provided. When installing a printed board unit in an empty slot of a shelf for expansion of a communication device unit, a slide rail portion that engages with a guide rail of a book-type shelf and a ventilation duct portion that forms a duct shape through a vertical ventilation hole And an optical connector housing method in which an optical fiber cable with an optical connector is pre-wired to a dummy unit having an optical connector housing case for housing an optical connector to be connected to the expansion unit in advance according to the necessity for future expansion. And
Dispersing and arranging the optical connectors in the recesses of the elastic member provided on the inner surface side of the optical connector housing case that houses the optical connectors;
Holding the optical fiber cable by taking out the optical fiber cable from a mating surface between elastic materials; and
Attaching the optical connector housing case to a removable concave structure on the front side of the dummy unit;
Engaging the slide rail portion provided in the dummy unit with the guide rail of the book type shelf for each empty slot of the book type shelf for unit expansion of the communication device;
An optical connector accommodation method comprising: When installing a printed board unit in an empty slot of a shelf for expansion of a communication device unit, a slide rail portion that engages with a guide rail of a book-type shelf and a ventilation duct portion that forms a duct shape through a vertical ventilation hole And an optical connector connection method for taking out an optical connector of an optical fiber cable for expansion from a dummy unit having an optical connector housing case for housing an optical connector to be connected to the expansion unit in advance, and connecting it to the printed board unit,
  The optical connector housing case is taken out by releasing the removal prevention of the removable optical connector housing case provided on the front side of the body portion of the dummy unit previously inserted in the empty slot for unit expansion, and removing the optical connector housing case. Taking out the optical fiber cable for expansion accommodated in the connector storage case;
  Removing the dummy unit from the empty slot, and instead adding a printed board unit;
  Connecting the optical connector to the optical connector receiving portion of the printed board unit;
An optical connector connection method comprising:

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