JPH08122539A - Optical fiber wiring fixing tool - Google Patents

Abstract

PURPOSE: To provide an optical fiber wiring fixing tool which surely fixes all of the excess length part of an optical fiber however long this part may be. CONSTITUTION: An optical fiber 2 which has the front end connected to parts 1a of a communication equipment 1 is pulled around while being fixed to plural wiring fixing tools 4 to 7 arranged like a circular loop at prescribed intervals in an excess length storage part 3 and is extended out of the communication equipment 1. Wiring fixing tools 4 to 7 are attached to the excess length storage part 4 freely rotatably by eccentrically provided flucrums 8 to 11.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical fiber wiring fixture for fixing an extra length portion of an optical fiber connected to a communication device or the like.

[0002]

2. Description of the Related Art When constructing or maintaining a communication device or the like, it is necessary to securely fix an extra length of the optical fiber when the optical fiber is connected to the communication device to prevent an increase in transmission loss and a break in the fiber core wire. Although it is important to prevent this, conventionally, the extra length portion of such an optical fiber is wound around and fixed to a drum-shaped extra length accommodation portion provided outside the apparatus and having a constant outer diameter.

[0003]

As described above, in the conventional method of winding and fixing the extra length portion of the optical fiber around the drum-shaped extra length accommodation portion having a constant outer diameter, the outer diameter of the extra length accommodation portion is fixed. Is constant, it is impossible to completely wind the extra length portion around the extra length accommodation portion depending on the length of the extra length portion of the optical fiber, and the extra length portion is further left over, and is not securely fixed,
There is a problem that some parts play instability.

The present invention has been made in view of the above,
It is an object of the present invention to provide an optical fiber wiring fixture capable of securely fixing all extra lengths of the optical fiber regardless of the length.

[0005]

In order to achieve the above object, an optical fiber wiring fixture of the present invention comprises a first engaging portion and a second engaging portion capable of engaging an optical fiber with an arm member. A plurality of wiring fixtures are pivotally supported on the base body by being rotatable about a position eccentric from the center between the first engaging portion and the second engaging portion of the wiring fixing tool. To do.

Specifically, in the optical fiber wiring fixture of the present invention, in order to fix the extra length portion of the optical fiber connected to the apparatus, a plurality of wiring fixtures are looped on the base body at predetermined intervals. Are arranged in a shape. In addition, each of the wiring fixtures has a U-shaped portion with a U-shaped cross section so that the optical fiber can be sandwiched and fixed.
It has the 1st engaging part and the 2nd engaging part for engaging an optical fiber, and it is constituted so that it can rotate centering on the position eccentric from the center between these engaging parts. While holding the extra length portion of the optical fiber in the U-shaped portion of the plurality of wiring fixtures configured as described above while fixing the extra length portion along the loop-shaped portion, it is fixedly accommodated. The length of the loop-shaped portion can be varied by rotating the U-shaped portion around the rotation center.

[0007]

In the optical fiber wiring fixture of the present invention, the extra length of the optical fiber is engaged with the first engaging portion and the second engaging portion of the plurality of wiring fixing devices arranged in a loop. The portion is fixedly accommodated by being drawn along the loop-shaped portion, and the rotation center of the wiring fixture is provided eccentrically,
By rotating around the center of rotation, the length of the loop-shaped portion can be made variable.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a diagram showing an optical fiber wiring fixture according to an embodiment of the present invention. In the figure, an optical fiber 2 whose tip is connected to an appropriate component 1a of a communication device 1 has a plurality of wiring fixtures arranged in a circular loop shape at predetermined intervals in a surplus length accommodating portion 3 as a base. After being routed while being fixed to 4,5, 6, 7, it extends to the outside of the communication device 1. Further, each of the wiring fixtures 4 to 7 has a fulcrum 8,
It is rotatably attached to the extra length accommodating portion 3 by 9, 10, and 11.

The wiring fixture 4 is shown in FIG.
As shown in the top view, front view, and side view in (b) and (c), respectively, a U-shaped portion 4 having a U-shaped section is formed.
a, and a U-shaped portion 4a as the first engaging portion
The extra length of the optical fiber is engaged with and fixed. The open end side of the U-shaped portion 4a functions as a second engaging portion and is formed in a V shape so that the excess length of the engaged optical fiber does not come out.
The upper portion of the U-shaped portion 4a including the U-shaped portion is formed of an elastic member so as to bend upward when sandwiching the extra length of the optical fiber. Further, a fulcrum 8 for pivotally supporting the wiring fixture 4 in the extra length accommodating portion 3 is attached to a lower portion corresponding to the V-shaped portion, and wiring is performed around the fulcrum 8. The fixture 4 is configured to be freely rotatable in both left and right directions as indicated by an arrow 21 in FIG. Although FIG. 2 shows only the wiring fixture 4 as a representative, the other wiring fixtures 5 to 7 have the same structure.

In the optical fiber wiring fixture constructed as described above, the extra length portion of the optical fiber 2 connected to the tip of the component 1a of the communication device 1 has an extra length as shown in FIGS. U-shaped portions 4a to 4a of the plurality of wiring fixtures 4 to 7 arranged in a circular loop shape at predetermined intervals on the housing portion 3 to
The extra length of the optical fiber 2 is reliably fixed to the wiring fixtures 4 to 7 by being routed along the wiring fixtures 4 to 7 while being sandwiched and fixed by 7a.

In this case, when the extra length portion of the optical fiber 2 is long, as shown in FIG. 3, the extra length portion is drawn around the plural wiring fixtures 4 to 7 in a loop shape plural times. As a result, even a long extra length portion can be securely fixed.

Further, the length of the extra length portion of the optical fiber 2 is shown in FIG.
If the length of the loop-shaped portion does not match an integer multiple of the length and is a little long, the plurality of wiring fixtures 4 to 7 are inwardly directed toward the open end of the wiring fixture around each fulcrum as shown in FIG. By rotating so as to increase the length of the loop-shaped portion composed of the respective wiring fixtures 4 to 7, the optical fiber 2 having this long extra length portion can be reliably fixed.

Further, in FIG. 3, all the wiring fixtures 4 to
7, the open end side is set outward, and in FIG. 4, all the wire fixing tools 4 to 7 are arranged so that the open end side is set inward, but all the wire fixing tools 4 to 7 are arranged. Need not be aligned, and some of the plurality of wiring fixtures 4 to 7 should be set inward so that the remaining open ends are outward, and The length of the loop-shaped portion composed of 4 to 7 can be varied to various lengths, so that the extra length of the optical fiber 2 can be securely fixed regardless of the length. it can.

Further, when the extra length portion of the optical fiber 2 is routed along the plurality of wiring fixtures 4 to 7, it is not necessary to route the extra length portion along all the wiring fixtures 4 to 7.
By skipping and pulling around one, two, or some of the wiring fixtures, the length of the loop-shaped portion formed by the wiring fixtures can be adjusted to a shorter length, whereby the optical fiber 2 The extra length part can be accommodated appropriately. Further, in this case, first, the extra length portion of the optical fiber 2 is drawn along all the wiring fixtures 4 to 7 and fixed,
Finally, by skipping some wiring fixtures around the remaining portion and pulling it around, even if the remaining portion of the optical fiber 2 is left slightly at the end, the remaining portion can be reliably fixed. .

When the extra length of the optical fiber is drawn along the plurality of wiring fixtures 4 to 7 and fixed, the extra length of the optical fiber is sandwiched between the U-shaped portions of the wiring fixture and fixed. However, this U-shaped portion is configured so that a plurality of extra length portions of the optical fiber can be sandwiched and fixed.

In the above embodiment, the plurality of wiring fixtures 4 to 7 are arranged in a circular loop shape, but they do not have to be circular and may be elliptical or rectangular. It is provided that the extra length portion of the optical fiber can be routed along this loop-shaped portion. The engaging portion may have any shape as long as it can engage with the optical fiber. For example, both ends may be U-shaped, or may be simply provided with protrusions.

[0017]

As described above, according to the present invention,
While holding the extra length of the optical fiber in the U-shaped part of the plurality of wiring fixtures arranged in a loop shape, the extra length is drawn along the loop part and fixedly accommodated. The length of the loop-shaped part can be changed by rotating the U-shaped part around the fulcrum of the wire fixing device that is provided with care, so no matter what the extra length of the optical fiber becomes, Also, it is possible to reliably accommodate and fix all the extra length portions. Therefore, the extra length is not fixed as in the conventional case, and the bending and lateral pressure due to unstable play are eliminated, resulting in disconnection of the optical fiber core and increase in transmission loss. Things will disappear.

[Brief description of drawings]

FIG. 1 is a diagram showing an optical fiber wiring fixture according to an embodiment of the present invention.

FIG. 2 is a top view, a front view, and a side view showing the structure of a wiring fixture used in the optical fiber wiring fixture shown in FIG.

FIG. 3 is a view showing a usage state of the optical fiber wiring fixture shown in FIG.

FIG. 4 is a view showing a usage state of the optical fiber wiring fixture shown in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Communication device 2 Optical fiber 3 Extra length accommodation part 4-7 Wiring fixture 4a U-shaped part 8-11 Support point

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Keisuke Sugiyama 1-1-6 Uchisaiwaicho, Chiyoda-ku, Tokyo Nihon Telegraph and Telephone Corporation

Claims (1)

[Claims] 1. A first device capable of engaging an optical fiber with an arm member.
Rotating a plurality of wiring fixtures each including a hooking portion and a second hooking portion around a position eccentric from a center between the first hooking portion and the second hooking portion of the wire fixing tool. An optical fiber wiring fixture characterized by being freely supported and pivotally supported on a substrate.