JP2002311315A - Metal fitting for supporting surplus length part of optical fiber cable - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a metal fitting for supporting the surplus length part of an optical fiber cable, by which operability can be improved by performing stringing of a messenger wire and supporting of the surplus length part of the optical fiber cable with the same member without moving the optical fiber cable horizontally. SOLUTION: The metal fitting 4 for supporting the surplus length part of an optical fiber is fitted in a vertical direction to an arm material 3 fixed to a pole 1 nearly in a horizontal direction and in a direction orthogonal with the stringing direction of the messenger wire 2, the supporting member 8 of the surplus length part of the optical fiber for supporting the surplus length part of the optical fiber cable 7 at the lower part of the vertical frame 5 of the metal fitting 4 is provided at the frame 5. A wire holding tool 9 for holding the wire 2 is fitted to an upper part compared with the member 8.

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 extra length support bracket for supporting an extra length of an optical fiber cable on a telephone pole.

[0002]

2. Description of the Related Art Optical fiber cables are aerially wired along messenger wires stretched over telephone poles. The optical fiber cable is supported on a support member in a loop in which the length of the optical fiber cable is wound several times so that the length of the optical fiber cable has some allowance in consideration of the relocation of a utility pole in the future.

FIG. 4 shows a conventional overhead wiring metal fitting for supporting an extra length of an optical fiber cable, and FIG.
(B) is a diagram showing a positional relationship between an optical fiber cable and a messenger wire.

In FIG. 4, a messenger wire suspension metal fitting 11 used to stretch the messenger wire 2 to the utility pole 1 is fixed to an arm fitting 3 fixed to the utility pole 1, and an extra length of the optical fiber cable 7 is provided. The supporting brackets 12 are attached at an interval corresponding to the extra length of the optical fiber cable for holding the components on the electric pole.

[0005] Support bracket 12 for the extra length of the optical fiber cable
When the optical fiber cable 7 is held in the messenger wire 2, the extra length of the optical fiber cable 7 stretched over the messenger wire 2 is shifted in the horizontal direction, and the optical fiber cable 7 is supported by the support fitting 12 by the extra length of the optical fiber cable.

Further, Japanese Utility Model Publication No. 4-49602 discloses that
An optical fiber cable is fixed to a wire stretched over an arm member fixed to a telephone pole, a vertical support member is provided on the arm member, and the support member supports the optical fiber cable loop via the arm member. In this figure, a metal fitting for overhead wiring of an optical fiber cable is shown.

[0007]

In the above-mentioned overhead wiring fitting supporting the extra length of the optical fiber cable, the overhead wiring fitting is attached at a distance from the messenger wire. When the optical fiber cable is held in the metal fittings, the optical fiber cable is bent obliquely, so that there is a disadvantage that work is difficult.

In addition, a messenger wire suspension metal fitting for extending the messenger wire and a support fitting for the extra length of the optical fiber cable for supporting the extra length of the optical fiber cable are required, and these must be separately mounted. Work efficiency was poor.

In view of the above, the present invention provides an optical fiber cable in which messenger wires can be stretched and the extra length of the optical fiber cable can be supported by the same member without displacing the optical fiber cable horizontally. This is to provide a supporting bracket for the extra length.

[0010]

SUMMARY OF THE INVENTION An optical fiber cable extra length support bracket of the present invention is supported by an arm member fixed in a direction substantially horizontal to an electric pole and orthogonal to a direction in which a messenger wire is wired. A bracket is attached in the vertical direction, and the vertical frame of the support bracket for the extra length of the optical fiber cable is provided with a support member for the extra length of the optical fiber cable for supporting the extra length of the optical fiber cable at the lower part of the vertical frame, and the optical fiber cable A wire holder for holding the messenger wire is attached above the support member by an extra length.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a perspective view showing a support fitting for an extra length of an optical fiber cable of the present invention, FIG. 2 is a view showing a support fitting for an extra length of an optical fiber cable, FIG.
(B) is a side view.

In FIG. 1, a support bracket 4 is attached to an arm member 3 fixed in a direction substantially horizontal to the electric pole 1 and in a direction orthogonal to the direction of the messenger wire 2 in the vertical direction.

As shown in FIG. 2, the supporting bracket 4 for the extra length of the optical fiber cable has a mounting bracket 6 for attaching the supporting bracket 4 for the extra length of the optical fiber cable to the arm member 3 on the upper part of the vertical frame 5. . Arm 3 with mounting bracket 6
The supporting bracket 4 is fixed by the extra length of the optical fiber cable by the bolt 6a and the nut 6b with the upper and lower sides of the supporting bracket 4 being sandwiched.

In order to support the extra length 7a of the optical fiber cable formed in a loop by winding the extra length of the optical fiber cable several times in a loop, the extra length of the optical fiber cable consisting of an arcuate pipe is provided under the vertical frame 5. The minute support member 8 is provided along the overhead wire direction so as to be located directly below the messenger wire 2.

Further, the vertical frame 5 is formed with a through-hole 10 through which a J-shaped bolt 9 having a hook 9a as a wire holder for holding the messenger wire 2 at an overhead level of the messenger wire 2 is passed.

FIG. 3 is a perspective view showing another embodiment of the wire holder. In this embodiment, an L-shaped wire support member 9b is provided on the vertical frame 5 by welding or bolts, and the messenger wire 2 is held between the L-shaped bolts 9c.

Next, a method of using the support fitting 4 for the extra length of the optical fiber cable according to the present invention will be described.

The mounting bracket 6 provided on the vertical frame 5 of the supporting bracket 4 for the extra length of the optical fiber cable is connected to the bolt 6a.
And the arm member 3 fixed to the utility pole 1 by a nut 6b.

Next, the hook 9a of the J-bolt 9 is passed through the messenger wire 2 and the screw portion of the J-bolt 9 is passed through the through hole 10 of the vertical frame 5, and a nut is screwed into the messenger wire 2. It is supported by the hook 9a of the shaped bolt 9.

Next, a preformed optical fiber cable extra length 7a is fixed to and supported by a tape on the optical fiber cable extra length support member 9 formed of an arcuate pipe.

According to the present invention, since the extra length of the optical fiber cable can be supported just below the messenger wire without displacing the optical fiber cable from the cable in the horizontal direction, the workability is improved.

[0022]

According to the present invention, the messenger wire is held by the wire holder in the vertical frame of the support bracket for the extra length of the optical fiber cable, and the extra length of the optical fiber cable is supported just below the messenger wire.
The extra length of the optical fiber cable and the J-bolt for passing the messenger wire are on the same track, so that the cable is not shifted horizontally, workability is improved, and the appearance is improved.

[Brief description of the drawings]

FIG. 1 is a perspective view of a support member for an extra length of an optical fiber cable according to the present invention.

FIGS. 2A and 2B show a supporting bracket for an extra length of an optical fiber cable of the present invention, wherein FIG. 2A is a front view and FIG. 2B is a side view.

FIG. 3 is a perspective view showing another embodiment of the wire holder of the present invention.

FIG. 4 (a) is a perspective view of a conventional aerial wiring fitting for an optical fiber cable, and FIG. 4 (b) is a view showing a positional relationship between the optical fiber cable and a messenger wire.

[Explanation of symbols]

 1: telephone pole 2: messenger wire 3: arm material (arm bracket) 4: support bracket for extra length of optical fiber cable 5: vertical frame 6: mounting bracket 6a: bolt 6b: nut 7: optical fiber cable 7a: extra length of optical fiber cable 8 : Support member for extra length of optical fiber cable 9: J-bolt 9a: Hook 9b: L-shaped wire support 9c: L-shaped bolt 10: Through hole 11: L-shaped wire support 12: L-shaped bolt 11: Messenger wire Suspension bracket 12: Support bracket for extra length of optical fiber cable

Claims (1)

[Claims] 1. An optical fiber cable extra length support bracket is vertically attached to an arm member fixed in a direction substantially horizontal to a utility pole and perpendicular to a direction in which a messenger wire is wired, and the optical fiber cable extra length support bracket is provided. The vertical frame is provided with a support member for the extra length of the optical fiber cable that supports the extra length of the optical fiber cable at the lower portion of the vertical frame, and a wire holder that holds the messenger wire above the support member for the extra length of the optical fiber cable. A support bracket for an extra length of an optical fiber cable, wherein a support bracket is attached.