JPH09127342A - Optical cord extra length storage structure - Google Patents

Abstract

(57) 【Abstract】 PROBLEM TO BE SOLVED: To store an extra length of an optical cord in an underfloor wiring space, and to put the optical cord in and out in any direction, fix an end portion of the optical cable, and connect a connecting portion between the optical cables. Provide a structure that can be accommodated. A substrate, a plurality of inner peripheral guides having an outer diameter and a height required to wind an optical cord and fixedly mounted on the substrate, and an inner diameter larger than an outer diameter of the inner peripheral guide, and a part of the inner peripheral guide. A plurality of outer circumference guides are provided around the inner circumference guide, which are notched so as to form the entrance and exit of the optical code, and the inner surface of which is fixed on the substrate at a position concentric with the inner circumference guide. Further, it is convenient to provide a core wire connecting portion housing means for housing a connecting portion between the optical fiber core wire of the optical fiber cable and the optical cord. Further, a cable fixing means for fixing the tip portion of the optical fiber cable may be provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a technique for wiring an optical fiber under a floor of a building, and more particularly to a storage structure for efficiently storing an extra length portion of an optical cord in a small volume. It is a thing.

An optical cord used for wiring an optical fiber indoors has an optical connector attached to the end of an optical fiber of a predetermined length in order to make it easy to use at the wiring site. Therefore, an extra length is usually generated when wiring is performed. This extra length is extremely convenient when moving a wired device or when changing the wiring, but when wiring is completed, it is necessary to store it in a place where it does not interfere. This method of storage entails the requirement that it be quickly accessible when needed.

[0003]

[0005] In the conventional technology,
The extra length of the optical cords in the underfloor wiring was simply bundled and placed in an empty space. Therefore, it causes congestion in the underfloor space, and it is considerably difficult to select and take out the required optical cords when the optical cords are transferred, additionally installed, removed, or the like, and workability is deteriorated.

An object of the present invention is to store an extra length of an optical cord in an underfloor wiring space and to introduce or lead the optical cord in an arbitrary direction, fix an end portion of the optical cable, and connect the optical cable to each other. It is to provide a structure capable of accommodating a part.

[0005]

In order to solve the above-mentioned problems, an optical cord extra length storage structure of the present invention has a substrate, an outer diameter and a height required for winding an optical cord, and is fixed on the substrate. A plurality of inner peripheral guides, and an inner peripheral guide around the inner peripheral guide having an inner diameter larger than the outer diameter of the inner peripheral guide and a part of which is cut out to form an entrance / exit of the optical cord. It is characterized by comprising a plurality of outer peripheral guides fixedly provided on the substrate at positions forming concentric circles.

Further, in the present invention, it is convenient to fix the core wire connecting portion housing means for housing the connecting portion between the optical fiber core wire of the optical fiber cable and the optical cord on the substrate. Further, it is preferable that a cable fixing means for fixing the tip portion of the optical fiber cable is fixedly provided on the substrate.

According to the present invention as described above, the underfloor space for accommodating the optical cord is organized, congestion is prevented, and the workability when changing the accommodation of the optical cord is improved. Further, the core wire connecting portion accommodating means and the cable fixing means can be provided in the vicinity of the extra length accommodating portion, and the efficiency of the optical fiber wiring can be improved.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view for explaining an example of a structure for accommodating an extra length of an optical cord according to the present invention. The substrate 1 has an outer diameter and a height required for winding an optical cord and is fixedly mounted on the substrate. A plurality of inner peripheral guides 2 and an inner peripheral guide having an inner diameter larger than the outer diameter of the inner peripheral guides 2 so that a part of the inner peripheral guides is cut out to form the entrance / exit 4 of the optical cord. And a plurality of outer peripheral guides 3 fixedly mounted on the substrate at positions forming concentric circles.

Such an optical cord extra length storage structure of the present invention is usually used in a state of being installed in a space of a double floor structure and covered with a lid (not shown). In the optical cord extra length storage structure of the present invention, four inner peripheral guides 2 are provided in this example, but the outer diameter thereof has a diameter of 6 cm or more, which is the allowable minimum curvature of the optical cord, and its height is higher. The length is about a few cm. In this example, four peripheral guides 3 are also provided, but they have a diameter of, for example, ten and several centimeters so that the optical code can be accommodated inside them.

Further, the outer peripheral guide 3 is provided with a notch portion so as to constitute an entrance / exit 4 of the optical cord.
The width of the entrance / exit 4 of the optical cord is designed so that when the optical cord is wired from the inner side to the outer side of the outer peripheral guide 3 or from the outer side to the inner side, the optical cord is not bent below the allowable minimum curvature. Further, in this example, the entrance / exit 4 of the optical cord is opened toward the center where the four outer peripheral guides 3 are arranged. However, by doing so, the optical cord is bent to have a bend of the allowable minimum curvature or less. Never.

In order to prevent the bending of the optical cord from being less than the allowable minimum curvature, the width and position of the entrance / exit 4 are selected, and, for example, the end of the cutout portion of the outer peripheral guide 3 is connected to the outer peripheral guide 3. It may be bent inward or outward with a curvature different from the curvature of. The outer peripheral guide 3 thus provided has an effect of separating the extra length portion of the optical code housed inside and the portion extending from the extra length storage structure to the outside and preventing the intersection.

Further, a core wire connecting portion accommodating means 8 for accommodating a connecting portion between the optical fiber core wire 7 of the optical fiber cable 6 and the optical cord 5 is provided on the substrate 1 of the optical cord extra length accommodating structure of the present invention. It is convenient to provide. The core wire connecting portion housing means 8 houses a plurality of core wire connecting portions so that they can be organized and easily taken out as needed.

Furthermore, it is preferable that a cable fixing means 9 for gripping and fixing the tip portion of the optical fiber cable 6 on the substrate 1 is fixedly provided on the substrate. With such a structure, the end of the optical cable is fixed, and it is possible to prevent the stress from being applied to the optical fiber due to the movement of the end of the optical cable.

Although the optical cord extra length storage structure of the present invention has been described in detail above, the optical cord extra length storage structure of the present invention is usually used by covering the lid with the lid, and the optical cord of the lid is led out. There is a notch in the place to do,
By covering this, dust can be prevented from entering the inside.

[0015]

As described above, according to the extra length storage structure of the optical cord of the present invention, the underfloor space for accommodating the optical cord is organized, congestion is prevented, and the operation for changing the accommodation of the optical cord is performed. Further, it is possible to provide the excellent effect that the core wire connecting portion accommodating means and the cable fixing means can be provided in the vicinity of the extra length accommodating portion, and the efficiency of the optical fiber wiring can be improved.

[Brief description of the drawings]

FIG. 1 is a perspective view of an optical cord extra length storage structure of the present invention.

[Explanation of symbols]

 1 substrate 2 inner circumference guide 3 outer circumference guide 4 optical code entrance / exit 5 optical code 6 optical fiber cable 7 optical fiber core 8 core connecting part accommodation means 9 cable fixing means

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Tetsuro Mori 3-19-2 Nishishinjuku, Shinjuku-ku, Tokyo Nippon Telegraph and Telephone Corporation (72) Inventor Akihiro Ofuji 3-23-14 Takanawa, Minato-ku, Tokyo Within Japan Comsys Co., Ltd.

Claims (3)

[Claims] 1. A substrate, a plurality of inner peripheral guides having an outer diameter and a height required for winding an optical cord and fixedly mounted on the substrate, and a part having an inner diameter larger than the outer diameter of the inner peripheral guide. A plurality of outer peripheral guides are fixed around the inner peripheral guide so that the inner surface of the inner peripheral guide forms a concentric circle with the inner peripheral guide so that the outer peripheral guides are cut out to form the entrance and exit of the optical code. Optical cord extra length storage structure. 2. The optical fiber connecting portion accommodating means for accommodating a connecting portion between the optical fiber optical fiber of the optical fiber cable and the optical cord is fixedly provided on the substrate. Optical cord extra length storage structure. 3. An optical cord extra length storage structure according to claim 2, further comprising fixed cable fixing means for fixing the tip portion of the optical fiber cable on the substrate.