JPH0745045Y2 - Optical fiber extra length storage - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to an extra length storage device for optical fibers, and in particular, stacks a plurality of trays storing the extra lengths of optical fibers in a vertically stacked manner. At the same time, the present invention relates to an extra length storage device capable of opening the upper part of each tray.

"Prior art" When connecting an optical fiber cable in the middle of a transmission section,
It has been practiced to form an extra length by winding a loop around the splicing part of the optical fiber exposed from the cable end. A plurality of extra lengths of fibers are housed in the recesses of the trays, and these trays are held in a stacked state. In this case, it is necessary to open the upper part of each tray when performing maintenance, inspection, repair, etc. of the connection part.

Therefore, conventionally, for example, an extra length storage device has been devised in which the trays are stacked vertically and held so that each tray can be pulled out side by side.

[Problems to be solved by the invention] However, in the extra length storage device described above, the same extra length portion can be stored only in each tray, and for example, when the extra length portion becomes long, It is difficult to store the tray in the recess of the limited space, and the extra length is wound multiple times, which makes maintenance and repair inside the tray extremely troublesome. turn into.

In addition, unless each tray is pulled out one by one, internal maintenance and repair cannot be performed, which complicates these operations.

This invention is to effectively solve the above-mentioned problems, it is possible to open the upper side of each tray, it is possible to continuously store the same extra length portion in a plurality of trays, and, An object of the present invention is to provide an extra length storage device for an optical fiber, which can open the upper parts of a plurality of trays at a time after the trays are collectively pulled out.

"Means for Solving the Problem" The present invention relates to a plurality of trays each having a storage portion for storing an extra length portion of an optical fiber, and a support frame for holding the trays in a stacked state so as to form a step. The support frame is provided with a vertical frame member, and a plurality of shelf members for supporting the trays are provided in multiple stages, and the tray is configured to be retractable in one direction. , The plurality of units are connected so as to be pulled out from the support frame, and in the trays of the plurality of units, one ends of vertically adjacent ones are openably and closably hinged, and the bottom plate of the tray is Since the extra length portions of the optical fibers housed in each of the plurality of units of trays are continuous with each other, holes vertically passing therethrough are formed.

"Action" By passing the extra length through the hole formed in the bottom plate of the tray, the extra length of the same optical fiber can be continuously stored in each unit tray, and these trays are connected continuously. Therefore, it can be pulled out from the support frame for each unit,
Further, if the tray of each unit is pulled out from the support frame, the upper tray can be rotated around the one end portion hinged to expose the inside of the lower tray.

[Embodiment] An embodiment of the present invention will be described below with reference to FIGS. 1 to 6.

As shown in FIGS. 1 and 2, the extra length storage device 1 includes a plurality of trays 3 for storing the extra length portion 2 _a of the optical fiber 2 pulled out from a cable (not shown), and these trays 3. And a support frame 4 that holds the two in a stacked state so as to form a step.

As shown in FIGS. 3 to 5, the tray 3 has an extra length portion.
Rectangular bottom plate 5 on which _2a is placed, and side plates 6A to 6D surrounding the four sides
With the above, it is formed in a rectangular box shape having a storage portion 7 whose upper part is in an open state. The both side plates 6A and 6C at both end portions in the longitudinal direction are widely cut at the width center portion. Then, at both ends in the longitudinal direction, an inverted U-shaped introduction port 8 for drawing in or drawing out the optical fiber 2 is formed adjacent to the side plate 6D.

In addition, the other side plates 6B and 6D have pressing pieces 9A parallel to the bottom plate 5.
~ 9D, L-shaped holding piece 9E at the center of both ends in the longitudinal direction
・ 9F is an L-shaped holding piece 9G at the center of both ends in the width direction.
When 9H are arranged so as to form a plurality of pairs in an inward direction and the extra length portion _2a of the optical fiber 2 is accommodated in the accommodating portion 7, an extra space is provided between the pressing pieces 9A to 9H and the bottom plate 5. A part of the long portion _2a is interposed to prevent lifting. A lid (not shown) is placed on the pressing pieces 9A to 9H to prevent the extra length portion _2a from being damaged. Further, a connector holding piece 10 is provided between the pressing piece 9H and the side plate 6D so as to tightly fix the connector 11 provided in the middle of the extra length portion _2a . At the end of the bottom plate 5 of the tray 3 in the longitudinal direction, a step which is lifted upward is provided so that a space 12 is created between the trays 3 when the trays 3 are stacked.

Each of the trays 3, which are vertically adjacent to each other, is hinged in pairs. That is, the side plate of the tray 3
The protruding portion 13 protruding outward is formed on the 6B, and the connecting portion 16 is connected to the protruding portion 13 of the upper tray 3 and the lower tray 3 of each unit via the shafts 14 and 15, respectively. Are connected. In this way, the protruding portion 13, the connecting portion 16, the shaft body 14, 1
5, the hinge part 17 is formed, and the hinge part 17
Since the two trays 3 are connected by, the tray 3 is pulled out from the support frame 4 in units of two connected trays. At the same time, after pulling out the tray 3 of each unit from the support frame 4, as shown in FIG. 6, the upper tray 3 can be rotated and opened while keeping the lower tray 3 horizontal. , The upper sides of both trays 3 can be opened. The side plates 6D that are hinged together and the side plates 6D that face each other are normally connected by clasps 18 as shown in FIGS. 3 to 5. That is, a pile 19 is partially embedded in the side plate 6D, and normally, the clasp 18 is hooked on both the piles 19 of the upper and lower trays 3.

Further, the bottom plate 5 of the tray 3 is formed with two holes 20 vertically penetrating at a position near the hinge portion 17. Since the holes 20 are formed, the extra length portion _2a is first wound in the upper tray 3, passed through one of the holes 20, and then wound in the lower tray 3. It is arranged so as to pass through the other hole 20 and extend outward from the upper tray 3. For this reason, the hole 20 is formed at a position slightly closer to the center in the longitudinal direction, and the extra long portion _{2a that} is passed therethrough is
The opening of the upper tray 3 cannot be prevented.

On the other hand, as shown in FIGS. 1 and 2, the support frame 4 holds the trays 3 in a stacked state so as to form a vertical step, and a space 12 provided at the end of the tray 3. And a vertical frame member 22 for connecting the shelf members 21 and the shelf members 21 provided in multiple stages for horizontally holding the tray 3 by invading the shelf members 21.
It consists of and. The tray 3 is housed in the support frame 4 slidably along the shelf members 21 of the support frame 4. Then, the tray 3 is drawn out toward the hinge portion 17 side.

As described above, in this optical fiber extra length storage device 1, by inserting the extra length portion 2 _a into the hole 20 formed in the bottom plate 5 of the tray 3, the same optical fiber can be attached to each unit tray 3. The extra length _2a of 2 can be stored continuously. Also,
Since these trays 3 are connected, a support frame 4 is provided for each unit.
If the tray 3 of each unit can be further pulled out from the support frame 4, the upper tray 3 can be rotated around the hinge portion 17 to expose the inside of the lower tray 3.

"Effect of Device" The extra length storage device for an optical fiber of the present invention exhibits the following excellent effects.

That is, by passing the extra length portion through the hole formed in the bottom plate of the tray, the extra length portion of the same optical fiber can be continuously accommodated in each unit tray. Therefore, there is no need to wind and store a long extra length portion in a single tray, and maintenance and repair of the tray can be facilitated.

Also, since these trays are connected, it is possible to pull out from the support frame for each of the connected multiple units, and if the trays of multiple units are collectively pulled out from the support frame, the hinged one end will be the center. The inside of the lower tray can be exposed by rotating the upper tray to open it. Therefore, maintenance / inspection and repair in the tray for each unit becomes easy.

[Brief description of drawings]

1 to 6 are views showing an embodiment of the present invention. FIG. 1 is a plan view of an extra length storage device, FIG. 2 is a front view thereof, and FIG. 3 is a plan view of a tray. FIG. 4 is a front view of the same, FIG. 5 is a side view of the same at all times, and FIG. 6 is a side view of the same when opened. 2 ... Optical fiber, _2a ... Extra length part, 7 ... Storage part, 3 ...
… Tray, 4 …… Support frame, 22 …… Vertical frame member, 21 …… Shelf member, 17 …… Hinge part, 5 …… Bottom plate, 20 …… Hole.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Yoshikazu Nomura, Inventor Yoshikazu Nomura, 1440, Rokuzaki, Sakura City, Chiba Fujikura Electric Co., Ltd. Sakura Factory (56) References JP 61-193109 (JP, A) (JP, U)

Claims (1)

[Scope of utility model registration request] 1. A support frame, comprising: a plurality of trays each having a storage portion for storing an extra length portion of an optical fiber; and a support frame for holding the trays in a stacked state so that the trays are vertically stacked. Is a vertical frame member in which a plurality of shelf members for respectively supporting the trays are provided in multiple stages, and is configured to accommodate the trays so that the trays can be pulled out in one direction. The trays of the plurality of units are connected so as to be drawn out, and one end of the plurality of trays that are vertically adjacent to each other is hinged so that the trays can be opened and closed. An extra length storage device for an optical fiber, characterized in that a hole penetrating vertically is formed so that the extra lengths of the formed optical fiber are continuous with each other.