JPS6147903A - Optical fiber surplus length containing tool - Google Patents

Abstract

PURPOSE:To make a depth size small by superposing two rectangular and flexible sheets, and providing a choking part, an opening part and its folding part between its long side parts, respectively. CONSTITUTION:Two rectangular and flexible 1st and 2nd sheets 9, 10 are superposed, one of the parts between long side parts is formed as a depth choking part 14 by connecting each of them, and the other is formed as an opening part 13, and a folding part 16 is provided on the side facing the sheet 9, of the sheet 10. Also, a surplus length part 1A is contained in a shape of a long circular loop on the sheet 10, and its shape is held by using the folding part 16 and the choking part 14 as stoppers. A fiber connecting part 6 being on the way of the surplus length part 1A is also contained together, and in that state, both end part lug parts 11, 12 in the length direction are connected by a hook 15. Accordingly, since a size of a depth is smaller than a length, the surplus length part can be contained in a long circular shape, and a connecting box can be slimmed by making a size in the diameter direction small. Also, by holding the surplus length part by the folding part 16 and the connecting part 14, it can be prevented from getting out. Also, by reversing the folding part 16, the surplus length part can be taken out easily.

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 invention relates to a fiber extra length storage tool.

(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. is stored in a circular loop shape in a rigid hard case 2 as shown in FIG. 4, or as shown in FIG. It was stored in a circular loop inside a flexible soft case 3. In addition, in the figure, 4 is an optical cable,
Reference numeral 5 designates a connecting portion for housing the case 2, 3, etc., 6 a fiber connecting portion, and 7 a seam welding portion that fuses the three sides of the soft case 3.

(The problem that the invention is trying to solve) However,
Conventionally, the extra length 1A of the optical fiber core 1 etc. has been wound into a circular loop shape, so the case 2.3 that stores it has to be square shaped. 3 becomes large, and the radial dimension of the connecting surface 5 becomes large, which has the disadvantage that it cannot meet the demand for slimming the connecting surface 5.

An object of the present invention is to provide an optical fiber surplus length storage tool that can reduce the depth dimension.

(Means of the present invention for solving problems) The optical fiber extra 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 long sides of one side in the width direction of both the sheets, and a long side of the other side of the seeds in the width direction is connected to each other to form a depth closed part. The short sides on both sides in the length direction of the sheets are connected at least partially in the width direction, and the long side located at the opening of the second sheet has a side facing the first sheet. It is characterized by being provided with a folded part.

(Function of the invention) Since such an optical fiber surplus length storage device has smaller dimensions in the width direction, that is, in the depth direction, than in the length direction, the loop-shaped surplus portion of the optical fiber core wire, etc. The long storage device is stored in an elliptical shape having a long axis in the longitudinal direction. At this time, the loop-shaped extra length is held down by the folded part of the second sheet on the opening side of the extra length storage device, and is held down by the central connecting part on the depth side, so that the oval shape of the extra length is The shape is maintained and the extra length is prevented from coming off. When taking out the extra length part, it can be easily taken out by folding the folded part in the opposite direction. Since this extra length storage tool has a small depth dimension, the radial dimension of the connecting surface can be reduced, and the connecting surface can be made slimmer.

(Example) Examples of the present invention will be described in detail below with reference to FIGS. 1 and 2. As shown in the figure, the optical fiber surplus length storage device 8 of this embodiment includes a rectangular first sheet 9 and a second sheet having the same apparent size as the first sheet 9. It is formed mainly of two sheets 10. Each sheet 9
．． Connecting ears 11.12 are formed at both longitudinal ends of 10, and holes 11 are formed in each ear 11.12.
A, 12△ is opened. These sheets 9 and 10 are made of, for example, a transparent polyester sheet whose surface is laminated with polyethylene.

These sheets9. ．． 10 are stacked in the same direction, an opening 13 is formed between the long sides of each sheet 9 and 10 on one side in the width direction, and an opening 13 is formed between the long sides of the other sheet 9 and 10 in the width direction. Adjacent comrades are heat-sealed and connected to each other to form a depth closing portion 14.

Both longitudinal ends of each sheet 9, 10 are removably connected to each other by hooks 15 at ear portions 11 and 12. A folded portion 16 that is folded back toward the side facing the first sheet 9 is provided on the long side of the second sheet 10 located at the opening 13 . A notch 16A is provided in the center of the folded portion 16.

Such an optical fiber surplus length storage device 8 is used to store light onto the second sheet 10 as shown in FIG. The extra length part 1A of the fiber core wire 1 etc. is stored in an oval loop shape, and its shape is maintained using the folded part 16 and the depth blocking part 14 as stoppers. The fiber connection part 6 provided in the middle of the extra length part 1A is also stored together. With the extra length part 1A stored, both ends are connected with hooks 15.

Such an optical fiber surplus length storage tool 8 can also be used for storing 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 has a rectangular shape in which the dimension in the width direction, that is, the depth direction is smaller than the length direction. The surface can be slimmed down. In the case of such an optical fiber surplus length storage device, the surplus length of the optical fiber core is stored in an elliptical shape, but in the case of this storage device, a closing part is provided at the back, and a closing part is provided at the front. Since the folded portions of the second sheet are provided, the oval shape of the extra length portion can be easily maintained using these folded portions. In addition, since this extra length storage device is made of stacked flexible sheets, it is thinner than a hard case even when folded together, making it extremely useful for slimming the connection direction. suitable for Furthermore, the second sheet that stores the extra length has a folded part on its long side on the opening side, so even though it is just a stack of sheets, the extra length can be stored reliably. can be done,
In addition, the extra length can be easily removed.

Moreover, since this extra length storage tool is formed from a sheet in a simple shape, it has the advantage that it can be manufactured at a very low cost.

There is a point.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an example of a completed state of the optical fiber extra length storage device according to the present invention, FIG. 2 is a perspective view of an example of this length storage device in an exploded state, and FIG. FIGS. 4 and 5 are perspective views of a conventional extra length storage device in a hard case and a soft case, respectively. 1... Optical fiber core wire, 1A... Extra length part, 4...
Optical cable, 6... Fiber connection part, 8... Optical fiber extra length storage device, 9... First sheet, 10... Second sheet, 11.12... Ear part, 13...Opening part, 14...Depth closing part, 15...Hook, 1
6...Folding part.

Claims (1)

[Claims] A first flexible sheet having a rectangular shape and a second flexible sheet also having a rectangular shape are stacked in the same direction, and one side in the width direction of both sheets is stacked on top of each other in the same direction. An opening is formed between the long sides, the long sides on the other side in the width direction of both sheets are connected to each other to form a depth closure, and short sides on both sides in the length direction of both sheets are connected to each other to form a depth closure. The sheets are connected at least partially in the width direction, and the long side of the second sheet located at the opening is provided with a folded part that is folded back toward the side facing the first sheet. An optical fiber extra length storage device featuring: