JP2580179Y2 - Fiber optic cable distributor - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical fiber cable distributor, and more particularly, connects an external optical fiber cord fusion-spliced to an external optical fiber cable core and an internal optical fiber cord with a connector. The present invention relates to an optical fiber cable distribution board having a plurality of connector trays accommodated in multiple stages.

[0002]

2. Description of the Related Art Conventionally, as this type of optical fiber cable distribution board, for example, the one shown in FIG. 8 is known. In the figure, an external optical fiber cable (not shown) introduced from the outside of the distribution board is connected to a cable fixing bracket 101.
Is led to the code exchanging unit 102. The cord exchanging unit 102 is used for fusion splicing the optical fiber cable outside the office to another optical fiber cable (external optical fiber cord) coated with a protective coating to accommodate the connection. The external optical fiber cord is located in the lower extra length storage unit 1
03 and the connector tray 1 via the code duct 104
It is drawn to 05.

The connector tray 105 is described in detail
As shown in FIG. 9, a plurality of optical fiber cords for a plurality of lines are drawn into the individual connector trays 105, and the same number of optical fiber cords for the office are connected to the connector trays 105 by the connectors. Each is connected. In addition, these connector trays 1
05, as shown in FIG.
It is rotatable. The intra-office optical fiber cord pulled in from the connector tray 105 is stored in the extra length accommodation section 1.
06, it is led out of the code duct 107 to the in-station equipment outside the wiring board.

[0004]

SUMMARY OF THE INVENTION In the optical fiber cable distribution board having the above-described configuration, when maintenance and inspection of the optical fiber cord connection portion inside and outside the office by the connector and replacement of the optical fiber cord are performed, A work space must be secured in front of or above the desired connector tray 105 by, for example, sequentially or collectively rotating the connector trays above the target connector tray 105. In this case, the desired connector tray 105 only needs to be present at a relatively upper level of the wiring board. For example, when the desired connector tray 105 is located near the lowermost level, the number of connector trays located at an upper level is large, and all of them are rotated. It took a very complicated time to move it. In addition, through such operations, the desired connector tray 105
When a maintenance space is secured in front of or above the optical fiber cord, and maintenance and inspection of the target optical fiber cord in the connector tray 105 is performed, other optical fiber cords not subject to maintenance and inspection are also exposed to the outside. Therefore, there is a risk that these may be damaged by a tool or the like, or unnecessary external force may be applied to the connection portion.

[0005] In view of this point, the applicant has previously filed Japanese Utility Model Application No. 2-7.
No. 5750 (Japanese Utility Model Laid-Open No. 4-33002) has proposed an optical fiber cable distributor. The wiring board of this application is
A connector tray having a plurality of connectors for connecting the outside optical fiber cord and the inside optical fiber cord to each other is provided.A plurality of these connector trays are vertically arranged in the frame in a frame, and these are arranged in multiple stages. The connector tray can be pulled out forward from the frame along the horizontal direction, and the connector can be exposed when the connector tray is pulled out.

According to this wiring board, each connector tray can be pulled out of the frame forward and horizontally, and all the connector trays can be pulled out easily and quickly under the same conditions regardless of their positions. The workability during maintenance and inspection of optical fiber cords, connectors, etc. can be dramatically improved compared to the past. SUMMARY OF THE INVENTION The present invention provides an optical fiber cable distribution board having a connector tray which can be pulled out from the front in this type, in which the processing of the optical fiber cord outside the office and the optical fiber cord inside the office is further improved to improve the usability. Its purpose is to provide a board.

In order to achieve the above object, the present invention provides a connector tray having a plurality of connectors for connecting an external optical fiber cord and an internal optical fiber cord to each other, and these connector trays are arranged vertically in a frame. A plurality of optical fiber cable distribution boards which are stacked and arranged in multiple stages along the horizontal direction, are pulled out forward from the frame, and the connector is exposed in a state where the connector tray is pulled out. A slit for leading each optical fiber cord to the side of the connector tray is formed in the connector tray over substantially the entire length in the depth direction , and the connector
Located on both sides of the connector tray along the tray stacking direction
Each of the optical fiber cords
That is held by a cord support with
is there.

[0008]

According to the present invention, the optical fiber cord outside the office and the optical fiber cord inside the office are led out of the slits on the side of the connector tray, and the optical fiber cords have some allowance for movement. No excessive force is applied to the connection portion of the optical fiber cord or the connector during both storage and removal. This prevents damage to the optical fiber cord and disconnection of the connector. Further, by providing the cord support with a gate member whose front can be opened, the workability in taking out the optical fiber cord when changing the connection of the connector or the like is improved.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. First, FIG. 1 shows a main part of an optical fiber cable distribution board according to this embodiment. In FIG. 1, reference numeral 1 denotes a frame. fusion tray 2 fusion splice between ₁ and outsiders optical fiber cord C ₃ is accommodated are arranged. These fusion tray 2 is formed by removably many laminated thin type tray in accordance with the core number of nuisance optical fiber cable core C _1. Note that outsider optical fiber cable core C _1, after being introduced from the upper part of the frame 1, is introduced into fusion tray 2 as an outsider optical fiber cable core C ₂ which is covered with a protective tube.

A large number of out-of-office optical fiber cords C ₃ drawn out of the fusion tray 2 are obtained by coating optical fiber cores with an appropriate plastic or the like in order to easily route optical fiber cores. These out-of-station optical fiber cords C ₃ are guided via guide cord supports 5 and clinchers 6 into connector trays 4 arranged in multiple stages between the inner frames 3 below the fusion tray 2.

Next, the connector tray 4 and other structures will be described in detail with reference to FIGS. The connector tray 4 includes a bottom plate 4a for accommodating and leading the excess length of the outsider optical fiber cord C ₃ and intra-office optical fiber cord C ₄ as shown in FIG. 2, a plurality of code guides 4b which is fixed on the bottom plate 4a A dam fixing holder 4e, and a connector supporting portion 4c detachably mounted so as to cross over a substantially central space of the bottom plate 4a. External light is provided on both sides of the connector supporting portion 4c. Fiber cord C ₃
And connector 4d for connecting the station optical fiber cord C ₄ to each other are attached. When the type of the connector is changed according to the types of the optical fiber cords C ₃ and C ₄ , the connector can be replaced by detaching and attaching the entire connector supporting portion 4c. In addition, the connector tray 4
Along a horizontal guide member 7 arranged on the left and right sides, the movable member can be moved in the front-rear direction as shown in FIG.

As shown in FIG. 5, the front plate 4f of the connector tray 4 is provided with a notch 4g for hooking out the connector tray 4 so that the connector tray 4 can be easily pulled out. Acts to convert The front plate 4f has a connector seal 4h for writing a line or the like of the connector 4d.

As is apparent from FIGS. 4 and 6, slits 4i are formed on the side surface of the connector tray 4 for introducing and leading out the optical fiber cords C ₃ and C ₄ over substantially the entire length in the depth direction. The slit 4i communicates with a slit (not shown) formed at a position corresponding to the guide member 7. As shown in FIG. 7, notches 4k are formed at both ends of the back plate 4j of the connector tray 4. These notches 4k, the introduction portion of the optical fiber cord C _3, C ₄ when pulling out the connector tray 4 forward, a lead portion by received in the cutout 4k, the optical fiber cord C
₃ is for excessive force to the C ₄ to prevent damage to join. The slit 4i of the connector tray 4
Since the optical fiber cords C ₃ and C ₄ introduced and drawn out from the side of the connector tray 4 are secured to some extent, the optical fibers can be moved both when the connector tray 4 is stored and when the connector tray 4 is taken out. No excessive force is applied to the connection portions of the cords C ₃ and C ₄ and the connector 4d. Therefore, damage to the optical fiber cords C ₃ and C ₄ and the connector 4d
Can be prevented from coming off.

Referring again to FIG. 2, a cord support 5 disposed on the left side of the connector tray 4 for holding and guiding the optical fiber cord C ₃ is a rod-shaped rotatably supported so as to open forward. The gate member 5a is arranged such that its ends are fixed with screws or the like in a closed state (a state indicated by a solid line in FIG. 2). On the other hand, the code support 8 which also holds the optical fiber cord C ₄ to the right of the connector tray 4, guides,
9 are arranged at appropriate intervals, and the gate members 8a and 9a are also rotatably supported so as to open forward. The opening / closing structure of the gate members 5a, 8a, 9a is used when it is desired to take out the optical fiber cords C ₃ , C ₄ from the cord supports 5, 8, 9 at the time of changing the connection of the connector 4d or performing maintenance and inspection of the connector tray 4. This makes it easy to take them out to the front and greatly contributes to improvement of workability.

As shown in FIGS. 1 and 2, the intra-station optical fiber cord C ₄ connected to the connector 4d is led out of the connector tray 4 through the slit 4i and the slit of the guide member 7, and Code support 8, 9
In addition, the upper end of the frame 1 is connected to the in-station equipment outside the wiring board via the cord ducts 10 and 11.

[0016]

As described above, according to the present invention, the optical fiber cord outside the office and the optical fiber cord inside the office are led out from the slits extending over substantially the entire length in the depth direction on the side of the connector tray, and these optical fiber cords can move to some extent. Since the margin is ensured, no excessive force is applied to the optical fiber cord and the connection portion of the connector both when storing and removing the connector tray. Thus, damage to the optical fiber cord and disconnection of the connector are prevented, and a highly reliable wiring board can be provided. In addition, by providing the cord support with a gate member that can be opened forward, the workability when taking out the optical fiber cord at the time of connection change of the connector and the like is improved, and the maintenance and inspection work can be further facilitated.

[Brief description of the drawings]

FIG. 1 is a front view of a main part showing an embodiment of the present invention.

FIG. 2 is a plan view of a main part of the embodiment of FIG.

FIG. 3 is a plan view of the connector tray.

FIG. 4 is a right side view of the connector tray.

FIG. 5 is a front view of the connector tray.

FIG. 6 is a sectional view taken along the line AA ′ of FIG. 3;

FIG. 7 is a partial rear view of the connector tray.

FIG. 8 is a front view showing a conventional technique.

FIG. 9 is a right side view showing a conventional technique.

[Explanation of symbols]

Reference Signs List 1 frame 2 fusion tray 3 internal frame 4 connector tray 4a bottom plate 4b code guide 4c connector support 4d connector 4e dam fixing holder 4f front plate 4g, 4k notch 4h connector seal 4i slit 4j back plate 5,8,9 code support 5a , 8a, 9a Gate member 6 Clincher 7 Guide member 10, 11 Code duct C ₃ Outside optical fiber cord C ₄ Internal optical fiber cord

──────────────────────────────────────────────────続 き Continuing on the front page (72) Koji Soma, creator Koji Soma 1-2-2-23 Oshima, Koto-ku, Tokyo Shoden Co., Ltd. (56) References JP-A 4-33002 (JP, U) JP-A 2- 90804 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) G02B 6/00 336

Claims (1)

(57) [Scope of request for utility model registration] 1. A connector tray having a plurality of connectors for connecting an external optical fiber cord and an intra-office optical fiber cord to each other, and a plurality of these connector trays are arranged in a plurality of layers along a vertical direction in a frame. In the optical fiber cable distribution board which is drawn forward from the frame along the horizontal direction and is exposed in a state where the connector tray is pulled out, each optical fiber is provided in the connector tray. a slit for deriving the code to the side of the connector tray and forming substantially the entire length in the depth direction, the connector tray
Located on both sides of the connector tray along the stacking direction of
Each optical fiber cord has a gate that can be opened at the front.
An optical fiber cable distributor held by a cord support having a material .