JPS6147908A - Optical fiber surplus length containing tool - Google Patents

Abstract

PURPOSE:To contain plural surplus length parts in one containing part without entangling them by containing plural surplus length holding sheets on the second sheet being the same shape as the first rectangular sheet and having a folding part, and holding separately each surplus length part by this sheet. CONSTITUTION:A main body is formed by the first rectangular sheet 9, the second sheet 10 of the same size, and two surplus length holding sheets 11. On the holding sheet 11, slits 16 for forming a pair of holding pieces 15 are provided so as to be opposed in the direction opposite to each other. One side of the parts between long side parts of the sheets 9, 10 is connected by thermal welding and formed to a depth choking part 18, and the other side is formed to an opening part 17. In such a state, a surplus length part 1A is shaped like a loop and held by the holding piece 15 and the sheet 11, and a folding part 14 of the opening part 17 is contained as a falling-out stopper on the sheet 10. Accordingly, even if two surplus length parts 1A are contained on one sheet 10, they are not entangled since they are held by the holding sheet 11. Also, since the number of laminated sheets can be decreased, a connecting box for containing many middle parts can be made small in size. In this regard, the surplus length part can be inserted and drawn out into and from the sheet.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention is an optical fiber that is suitable for use when storing the excess length of optical fiber cores or optical fiber cords, for example, at the drop-in connection part of optical cables. This article is related to extra fiber length storage equipment.

(Prior Art) At the connection points of optical fibers, etc., an extra length is provided in advance in the optical fibers, etc., adjacent to the fiber connection portion in preparation for reconnection such as connection change.

The excess length of the optical fiber is generally stored in a case in the form of a loop.

Conventionally, the extra length 1A of the optical fiber core 1 etc. has been stored in a loop shape in a rigid hard case 2 as shown in FIG. 8, or it has been stored in a flexible form as shown in FIG. I used to store it in a loop shape inside a soft case 3. In addition, in the figure, 4 is the optical cable, and 5 is the case 2.
, 3, etc., 6 is a fiber connection part, and 7 is a seam 11 that fuses the three sides of the soft case 3.

(The problem that the invention is trying to solve) However,
The conventional optical fiber extra length storage device is hard case 2,
Even if it is a soft case 3, the extra length 1 of the optical fiber core 1 etc.
For A, it was not possible to store only one extra length 1AL in one case in order to avoid mutual entanglement. For this reason,
When a large number of extra length portions 1A are present, extra length storage devices corresponding to the number of extra length portions 1A are required, and there is a drawback that the connecting surface for accommodating them becomes large.

(Object of the Invention) An object of the present invention is to provide an optical fiber surplus length storage device that can store a plurality of surplus length portions in one storage portion without tangling them with each other.

(Means of the present invention for solving the problems) The optical fiber surplus length storage device according to the present invention includes a first sheet having a rectangular shape and having flexibility; and a second sheet with the same orientation, an opening is formed between the edges of both sheets on one side in the insertion direction of the extra length, and an edge on the other side of the two sheets in the insertion direction of the extra length. The edges of both sheets in the direction orthogonal to the insertion direction of the extra length are connected at least part of the edge direction, and the second A folded part is provided on the edge of the sheet at the opening facing the first sheet, and a plurality of sheets are provided on the second sheet using the folded part as a means for preventing removal. It is characterized by storing an extra length holding sheet.

(Function of the Invention) Such an optical fiber surplus length storage device stores a plurality of surplus length holding sheets on the second sheet having a folded portion at the entrance. The extra length of the core wire can be held and stored separately. Therefore, a plurality of extra length portions can be stored in one storage portion without being entangled with each other.

(Example) Embodiments of the present invention will be described in detail below with reference to the drawings.

1 and 2 show a first embodiment of the present invention. The optical fiber surplus length storage device 8 of this embodiment includes a first sheet 9 having a rectangular shape and a second sheet 10 having the same apparent size as the first sheet 9. and two extra length holding sheets 11.

Connection ears 12.13 are formed at both ends of each sheet 9.10 in the length direction (direction perpendicular to the extra length insertion direction), and each ear 12.13 has a hole 12A,
13Δ is opened. Second shi.

A folded portion 14 is formed on one long side (or edge) of the tray 10 in the width direction (extra length insertion direction). A notch 4A is formed in the center of the folded portion 14 in the longitudinal direction. Each extra-length holding sheet 11 is provided with holding piece forming slits 16 which form a pair of holding pieces 15 and facing each other in opposite directions. Each sheet 9.1
0.11 is made of, for example, polyester sheet 1- whose surface is laminated with polyethylene.

Both sheets 9 and 10 are attached to the folded portion 14 of the second sheet 10.
The distance between the long sides of one side in the width direction (extra length insertion direction) of both sheets 9 and 10 which are stacked in the same direction as shown in FIG. Opening 1
7, and adjacent long sides of each sheet 9 and 10 on the other side in the width direction are connected by heat R bonding to each other to form a depth closing portion 18. The extra length holding sheet 1 is placed on the second sheet 10 using the folded portion 14 as a stopping means.
1 are stored at different positions in the longitudinal direction of the sheet 10. The ears 12 and 13 of both seams 1-9 and 10 are removably connected at their ears 12 and 13 with pock 19, respectively.

Such an optical fiber surplus length storage device 8 is constructed by taking out the surplus length holding sheet 11 as shown in FIG. The extra length holding sheet 11, which is held by the holding piece 15 and the sheet 11 and holds the extra length part 1A in this state, is placed on the second sheet 10 to prevent its folded part 14 from being pulled out, as shown in FIG. Store as a means.

In this way, even if two extra length parts 1A are stored on one second sheet 10, each extra length part 1A is held by the extra length holding sheet 11, so they will not get tangled with each other. do not have.

5 and 6 show a second embodiment of the present invention. Note that portions corresponding to those in the first embodiment are indicated by the same reference numerals. The optical fiber surplus length storage device 8 of this embodiment is the first one described above. In addition to the second seat 9,10, a third seat 20 is provided. In this embodiment, the second sheet 10 is wider than the first sheet 9 (dimension in the extra length insertion direction), and the third sheet 20 is wider than the second sheet 10. The third sheet 20 is also provided with a folded portion 21. There is a notch 21A in the center of the folded part 21.
is provided. Ear portions 22 are also provided at both ends of the third sheet 20 in the length direction (direction perpendicular to the extra length insertion direction), and holes 22A are also formed in the eel portions 22. A triangular first chevron-shaped rising portion 23 is provided on the other widthwise side of the first sheet 9 along the longitudinal direction of the long side. Outer edge 23 of this first chevron-shaped rising portion 23
A is folded inward. A triangular second chevron-shaped rising portion 24 is provided along the longitudinal direction of the long side of the second sheet 10 on the other side in the width direction. The outer end edge 24A of the first chevron-shaped rising portion 23 is folded inward.

A metal connecting portion holder 25 is attached to one edge of the extra length holding sheet 11.

Each sheet 9, 10, 20 is stacked with one long side in the width direction aligned, and the opening 17 is formed between one long side of these sheets 9, 10, 20 as described above. There is. The outer edge 23A of the first sheet 9 is fixed to a corresponding portion of the second sheet 10 by fusion. The outer edge 24A of the second sheet 10 is fixed to a corresponding portion of the third sheet 20 by m-fitting. Such a sheet9.
10. The stacked body of 20 has the first chevron-shaped rising portion 23
The inner end edges 23B of the inner end edges 23B are connected at both ends in the length direction by connecting fittings 26. Ears 12, 1 of each sheet 9, 10.2O
．． 3.22 is removably connected with the hook 17 as described above. Second. On the third sheet 10.20, two extra length holding sheets 11 per sheet are housed with respective folded portions 14 and 21 (the folded portions 14 and 21 serve as stopping means) and are shifted in position in the longitudinal direction. In this state, each connection portion holder 25 is housed within the first and second chevron-shaped rising portions 23 and 24.

As shown in FIG. 7, such an optical fiber 1 fiber surplus length storage device 8 holds the surplus length portion 1A of the optical fiber core 1 etc. in each surplus length holding sheet 11 as described above, and performs fiber connection. With the section 6 held by the connecting section boulder 25, each sheet 1
0.20 extra length retaining seams 1 to 11, 2 per sheet
The two extra length portions 1A are stored. Each fiber connection part 6 is
The chevron-shaped rising portion 23 is held in the connection portion holder 25.
Stored at ゜24.

With this structure, even if there are fiber connection parts 6, these fiber connection parts 6 are stored in the angular rising parts 23 and 24, so even if the soft type extra length storage tool 8 is used,
It is possible to prevent the fiber connection portions 6 from overlapping each other in an adjacent living room and causing the extra length storage i8 to partially become abnormally swollen.

The optical fiber surplus length storage device 8 of the present invention is not limited to the above-mentioned embodiments. For example, in the case of the first embodiment, a plurality of second sheets 10 may be used, or a plurality of second sheets 10 may be used. In the case of the second embodiment, it is of course possible to adopt a structure in which the first sheet 9 and the second sheet 10 having no second chevron-shaped rising portion 24 are formed.

Further, each sheet is not limited to a rectangular shape, and any one of the sheets may be a square shape.

That is, each sheet may be rectangular.

This optical fiber surplus length storage tool 8 can also be used to store surplus lengths of optical fiber cords for outdoor wiring, for example.

(Effects of the Invention) As explained above, the optical fiber surplus length storage device according to the present invention stores a plurality of surplus length holding sheets on the second sheet having a folded portion at the entrance. Individual fiber optic hearts in sheets! ! ! The extra length of the hat can be held and stored separately.

Therefore, a plurality of extra length portions can be stored in one storage portion without being entangled with each other. For this reason, in the case of a connecting surface that accommodates a large number of intermediate parts, the number of stacked sheets can be avoided without reducing the size of the connecting surface. In addition, if the extra length holding seat 1- holds the extra length, the extra length can be inserted into the sheet and removed very easily, making it easier to handle the extra length. There are advantages.

[Brief explanation of drawings]

FIG. 1 is a perspective view of a completed state of a first embodiment of an optical fiber surplus storage device according to the present invention, FIG. 2 is a perspective view of an exploded state of the surplus length storage device of the first embodiment, and FIG. A perspective view of the surplus length retention sheet used in this example, FIG.
FIG. 5 is an exploded perspective view of the second embodiment of the optical fiber surplus storage device according to the present invention, and FIG. 6 is a perspective view of the surplus optical fiber length storage device of the second embodiment in use. FIG. 7 is a perspective view of the extra length storage device of the second embodiment in its used state, and FIGS. 8 and 9 show the hard case of the conventional extra length storage device. It is each perspective view in the case of a soft case.

Claims (2)

[Claims] (1) A first flexible sheet having a rectangular shape and a second flexible sheet having a rectangular shape are overlapped in the same direction, and the remaining length of both sheets is in the insertion direction. The space between the edges on one side is an opening, and the space between the edges on the other side in the insertion direction of the extra length of both sheets is connected to each other to form a depth closure, and The edges on both sides in the orthogonal direction are connected at least in part in the edge direction, and the edge located at the opening of the second sheet is folded on the side facing the first sheet. 1. An optical fiber surplus length storage device, characterized in that a folded part is provided, and a plurality of surplus length holding sheets are stored on the second sheet using the folded part as a means for preventing slippage. (2) The extra length holding sheet is characterized in that holding piece forming slits forming a pair of holding pieces are provided in the sheet main body so as to face each other in opposite directions. Optical fiber extra length storage device as described in section.