JP3311535B2 - Optical fiber cable storage case - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical fiber cable storage case for housing a connection portion of an optical fiber cable with a connector or the like with an appropriate extra length.

[0002]

2. Description of the Related Art In a case where an optical fiber core is stored in an optical fiber core storage case or a connection state of the stored optical fiber core is switched, the work is performed easily. It is desirable to set the storage case on a workbench or the like so as not to move.

As one of the means, a projection is formed on a worktable or the like, and a hole for receiving the projection is formed on a bottom plate of the storage case. It has been studied to fit a projection such as a worktable into a hole of the bottom plate to prevent the storage case from moving.

However, in this structure, when the storage case is set on a work table or the like, the projection of the work table or the like penetrates the bottom plate of the storage case and projects into the storage case. During handling, there is a danger that the optical fiber core may be accidentally hooked on the projection and damaged, or the optical fiber core may be bent with a small radius of curvature at the projection to cause an increase in loss. There is.

[0005] An object of the present invention is to provide an optical fiber cable storage case that solves such problems.

[0006]

In order to achieve the above object, an optical fiber core storage case according to the present invention has a bottom plate formed with a hole through which a projection for positioning the storage case is inserted, and a hole formed around the hole. , have a tapered outer peripheral surface of the diameter toward the upper is reduced, pop out height of the optical fiber prevents
An annular wall lower than the height of the piece is formed.

[0007]

When such a circular wall is formed, when the storage case is set on the work table or the like, the projection of the work table or the like protruding into the storage case is surrounded by the circular wall, so that the optical fiber cable is provided. There is no danger that the optical fiber core will be caught on the annular wall because the outer peripheral surface of the annular wall is tapered so that the diameter decreases as going upward. For this reason, there is no possibility of damaging the optical fiber or increasing the loss.

[0008]

Embodiments of the present invention will be described below in detail with reference to the drawings. 1 to 3 show an embodiment of the present invention. The optical fiber core storage case 11 includes a case body 13 and a cover plate 15.

The case body 13 includes a bottom plate 17 and a front wall 1.
9a, a back wall 19b, left and right side walls 19c and 19d, and a guide wall 21 of the optical fiber 1 are integrally formed. Although the optical fiber core 1 is in the form of a multicore tape in the illustrated example, it may be a single core. Left and right side walls 19
An optical fiber lead-in portion 23 is formed in c and 19d. Also, at the upper ends of the left and right side walls 19c and 19d, the upper end of the guide wall 21, and the like, a protrusion preventing piece 25 is formed to prevent the optical fiber core wire 1 from protruding. The cover plate 15 is attached to the case body 13 by a hinge 27 so as to be openable and closable.

The storage case 11 is installed on the work table 3 as shown in FIG. 2 to store the optical fiber 1. In order to prevent the storage case 11 from moving on the work table 3, the work table 3 is formed with a protrusion 5, and the bottom plate 17 of the storage case 11 is provided with a hole 2 through which the protrusion 5 is inserted.
9 are formed.

The feature of the storage case 11 is that the hole 29
Is formed around the periphery of the annular wall 31. The outer peripheral surface of the annular wall 31 has a tapered shape in which the diameter decreases as going upward. The height of the annular wall 31 is higher than the height of the protrusion 5 protruding from the bottom plate 17 and lower than the height of the protrusion preventing piece 25.

[0012]

The optical fiber core storage case of the present invention is
With the above-described configuration, there is no possibility that the optical fiber core will be caught on the projection of the work table or the like when the optical fiber cable is stored on the work table or the like for storage work. Therefore, it is possible to reliably prevent the damage and loss increase of the optical fiber, and it is possible to easily perform the operation.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an optical fiber core storage case according to an embodiment of the present invention.

FIG. 2 is a sectional view of a main part showing a state where the storage case of FIG. 1 is set on a workbench;

FIG. 3 is a plan view showing a main part of the storage case of FIG. 1;

[Explanation of symbols]

 11: Optical fiber core wire storage case 13: Case body 15: Cover plate 17: Bottom plate 19a: Front wall 19b: Back wall 19c, 19d: Left and right side walls 21: Guide wall 23: Optical fiber core wire introduction part 25: Prevention of projection Piece 27: hinge part 29: hole 31: annular wall

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Shigeyuki Kojima 16-9 Wakamatsucho, Shinjuku-ku, Tokyo Inside Shinri Kogyo Co., Ltd. (72) Inventor Toshiaki Takeda 5-23-8 Nishigotanda, Shinagawa-ku, Tokyo Co., Ltd. Shoden In-house (56) References JP-A-62-112107 (JP, A) JP-A-59-63320 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) G02B 6/00 G02B 6/24

Claims (1)

(57) [Claims] To 1. A bottom plate, a bore projection for positioning the storage case is inserted is formed, around the hole, have a tapered outer peripheral surface of the diameter toward the upper is reduced, the height of light Fa
An optical fiber core storage case, wherein an annular wall lower than the height of the piece for preventing the protrusion of the fiber core is formed.