JPH0625804B2 - Optical fiber cable storage - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fiber optic cable storage container, and more particularly to an optical fiber cable storage container that is suitable for surplus length treatment and protection of an optical fiber cable and conversion of a guide direction.

[Background of the Invention]

Since the conventional container has only the first guide wall 2 having a radius of curvature R1 as shown in FIG. 2, the excess length of the optical fiber cable is processed only on the outer circumference of the guide wall 2, so that the excess or deficiency of 2πR1 is worst. Was occurring. Unlike the conventional signal cable, the optical fiber cable has a large allowable minimum radius of curvature, so that it is difficult to process the extra length of 2πR1 in or near the device. For this reason, it is necessary to prepare several types of storage devices or to use optical fiber cables at the site.

[Object of the Invention]

An object of the present invention is to provide an optical fiber cable storage device capable of appropriately protecting the optical fiber cable against any extra length and accommodating the extra length, and further capable of arbitrarily changing the direction of the optical fiber cable. Especially.

[Outline of Invention]

A feature of the invention is to have a radius that is greater than or equal to the minimum allowable radius of curvature of the fiber optic cable. At least two guide walls are provided, and a circle having a large radius of curvature of the two guide walls is inscribed with another circle to serve as a guide guide for the optical fiber cable, with the two radiuses of curvature as upper and lower limits, The optical fiber cable can be stored and protected with an arbitrary radius of curvature in between.

Example of Invention

An embodiment of the present invention will be described below with reference to FIGS. 1 and 3. The first substrate having an appropriate radius of curvature R1 on the plate-shaped substrate 1
And a second guide wall 4 which is inscribed in the first guide wall 2 and has a radius of curvature R2 larger than the minimum allowable radius of curvature of the optical fiber cable 5. Further, at a portion where the first guide wall 2 and the second guide wall 4 are in contact with each other, the first guide wall 2 is provided with a notch and a notch 3 having an appropriate length.

With the above configuration, the optical fiber cable 5 is
When the direction is changed from the point to the point B and the extra length treatment of the optical fiber cable 5 is performed, the optical fiber cable 5 is clamped by the cable clamps 6 and 7 at the positions corresponding to the points A and B. Further, the extra length is wound along the outer circumference of the first guide wall having the maximum radius R1 until the residual length becomes an appropriate length. The remaining length is introduced into the space formed by the first guide wall 2 and the second guide wall 4 from the notch 3 provided in the first guide wall 2 and stored in the range of the maximum radius R1 and the minimum radius R2. To do. Therefore, it occurs in the optical fiber cable 5,
With respect to any extra length, it is possible to store and protect the entire extra length without making the optical fiber cable 5 less than the allowable minimum radius of curvature for cutting.

FIG. 4 is a perspective view showing another embodiment, and in FIG.
A guide rod 13 which replaces the guide wall is formed on the circumferences 11 and 12 having the radii of curvature R1 and R2. In this case, the notch portion 3 shown in FIG. 1 may be unnecessary depending on the formation interval of the guide rods 13. In the figure, 8 is a clamp 6, 7 mounting screw, 9 is a cushioning material for protecting the optical fiber cable,
Reference numeral 10 is a protective cover attached to the flat substrate 1.

〔The invention's effect〕

According to the present invention, when laying an optical fiber cable, it is possible to protect the storage even if any extra length is generated. (1) Terminal processing of the optical fiber cable can be performed in the factory and productivity is improved. .

(2) Installation work of optical fiber cable is easy,
The construction period can be shortened.

[Brief description of drawings]

FIG. 1 is a perspective view of an optical fiber cable storage container showing an embodiment of the present invention, FIG. 2 is a perspective view of a conventional optical fiber cable storage container, and FIG. 3 is a view taken along the line XX in FIG. Four
The drawing is a perspective view showing another embodiment of the present invention. 1 ... Plate-shaped substrate, 2 ... Guide wall 1, 3 ... Notched portion of guide wall 1, 4 ... Guide wall 2, 5 ... Optical fiber cable, 6 ... Cable clamp 1, 7 ... Cable Clamp 2.

Claims (1)

[Claims] 1. A first guide wall having a proper radius that can be accommodated in the substrate and a first guide wall which is inscribed on the first guide wall on a flat plate-like substrate, and which has an appropriate minimum radius of curvature of the optical fiber cable or more. At least one second guide wall having a radius is provided, a portion where the two guide walls contact each other is cut out with an appropriate length, and the optical fiber cable is fixed in the connecting direction of the first guide wall. One or more clamps are provided, the outer wall of the first guide wall stores and changes the direction of the optical fiber cable, and the optical fiber is a space formed by the inner wall of the first guide wall and the outer wall of the second guide wall. An optical fiber cable storage device that stores cables.