JPH11119072A - Optical connection box - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily ground an optical fiber cable and to facilitate a connecting operation for the optical fiber cable by providing a ground terminal for a member for fixing the optical fiber cable to a box main body. SOLUTION: In the box main body 4, a cable clamp 1 as an incoming wire member a tension member clamp 14, a fusion splicing tray 5, and a cord clap 6 as an outgoing wire member are provided. Then the ground terminal 9 is provided on a tension member clamp 14 as a member for fixing the optical fiber cable 3 to the box main body 4. The tension member clamp 14 consists of upper and lower members. The tension member 12 as a strength holding member provided in the center of the optical fiber cable 3 is run through a hole bored in the flank of the upper member and both the members are clamped with a screw to clamp the tip of the tension member 12. Further, a ground screw is provided to the lower member of the tension clamp 14 to constitute the ground terminal 9.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical connection box used for connecting an optical fiber cable.

[0002]

2. Description of the Related Art In an optical connection box, as shown in FIG. 3, an optical fiber cable 3 is fixed in a box body 4 by a cable clamp 1 and a tension member clamp 2, which are input members. It has a structure in which it is worn and then goes out via a cord clamp 6 which is an outgoing wire member. In the conventional optical connection box, the ground terminal 7 is provided at any one of the four corners of the optical connection box.

[0003] Therefore, in order to ground the drawn optical fiber cable 3, the electric wire 8 is connected to a jacket made of aluminum or the like covering the outer periphery of the core of the optical fiber cable 3 and connected to the ground terminal 7. Therefore, there is a problem that workability at the site is poor. There is also a problem that the ground wiring reduces the effective space inside the optical connection box.

[0004]

SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems in the prior art, can easily ground the optical fiber cable, can easily connect the optical fiber cable, and can easily connect the optical fiber cable inside the optical connection box. The purpose of the present invention is to provide an optical connection box which can effectively utilize the space of the optical connection box.

[0005]

In order to solve the above-mentioned problems, an optical connection box according to the present invention is characterized in that a ground terminal is provided on a member for fixing an optical fiber cable to a box body. Things.

According to the present invention, since the earth terminal is provided on the member for fixing the optical fiber cable, the sheath made of aluminum or the like covering the core of the inserted optical fiber cable is connected to the earth terminal via the electric wire. Thus, the ground can be easily taken. This not only improves workability, but also eliminates the need for wiring for grounding inside the optical connection box and the necessity of providing a separate ground terminal, making it possible to effectively use the space inside the optical connection box. it can.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below. FIG. 1 is a view showing the inside of an optical connection box according to the present invention, in which a cable clamp 1 and a tension member clamp 14 as input members, and a fusion tray 5
And the arrangement of the cord clamp 6 as an outgoing wire member are the same as in the prior art. However, in the present invention, the ground terminal 9 is provided on the tension member clamp 14, which is a member for fixing the optical fiber cable 3 to the box body 4, as shown in FIG.

In this example, the tension member clamp 1
Numeral 4 is arranged at the center of the box main body 4 so as to be able to cope with any of the upper and lower line directions. The tension member clamp 14 is composed of upper and lower members 10 and 11, and the tension member 12, which is a strength holding member provided at the center of the optical fiber cable 3, is attached to the upper member 1.
Through the hole 13 formed on the side surface of the O, the two members 10 and 11 are tightened with screws to clamp the tip of the tension member 12.

The tension member clamp 14
A ground screw is provided on the lower member 11 to constitute a ground terminal 9. This earth screw is preferably a pan head screw, and is easily connected via an electric wire 8 to a jacket made of aluminum or the like covering the core of the optical fiber cable 3 clamped by the cable clamp 1 as shown in FIG. It is a structure that can be done.

In order to make the tension member clamp 14 function as a ground terminal, the lower member 11 is welded to a metal box body 4 and this box body 4 is electrically connected to the building by a conventional method. And grounded. When the box body 4 is not grounded or when the box body 4 is made of resin, the grounded wire may be directly connected to the tension member clamp 14.

In the optical connection box of the present invention thus configured, the tension member 12 of the optical fiber cable 3 inserted from the cable clamp 1 is clamped to the tension member clamp 14, and the core of the optical fiber cable 3 is fused to the fusion tray. The wire is fused through the cord clamp 6, which is a wire-out member, in the same manner as in the related art.

However, since the grounding terminal 9 is provided on the tension member clamp 14, by connecting the grounding terminal 9 to the jacket made of aluminum or the like of the optical fiber cable 3 via the wire 8, the length of the wire 8 can be reduced. The length of the box can be shortened, the trouble of routing the electric wires 8 in the box can be omitted, and the effective space in the box is not reduced by wiring. Further, since the ground terminal does not need to be provided as a separate member, the number of parts can be reduced and the effective space in the box can be widened.

Although the ground terminal 9 is provided only on the tension member clamp 14 in this embodiment,
Any member may be used as long as it fixes the optical fiber cable 3. For example, the member may be provided in the cable clamp 1.

[0014]

As described above, in the optical connection box of the present invention, the grounding terminal is directly provided on the member for fixing the optical fiber cable, so that the optical fiber cable can be easily grounded. This not only improves workability, but also eliminates the need for complicated wiring work for grounding inside the optical connection box as in the past, and eliminates the need to provide a separate ground terminal. There is an advantage that can be effectively utilized.

[Brief description of the drawings]

FIG. 1 is a front view showing an embodiment of the present invention.

FIG. 2 is a perspective view of a tension member clamp.

FIG. 3 is a front view showing a conventional optical junction box.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cable clamp 2 Conventional tension member clamp 3 Optical fiber cable 4 Box body 5 Fusion tray 6 Cord clamp 7 Conventional ground terminal 8 Electric wire 9 Ground terminal of the present invention 10 Upper member 11 Lower member 12 Tension member 13 Hole 14 The tension member clamp of the present invention

Claims (1)

[Claims] 1. An optical connection box, wherein a ground terminal is provided on a member for fixing an optical fiber cable to a box body.