JPH10253836A - Excess length processing device for optical fiber cable core - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily and properly treat the excess length portion of an optical fiber cable core under the application of simple constitution. SOLUTION: This device covers a tray part 11a as the first tray part and a tray part 11b as the second tray part, and the excess length portion of an optical fiber cable core 20 can be wound around the engagement pieces 14 of the parts 11a and 11b like an 8-shape. As a result, the excess length portion of the core 20 can be wound under the restraint of the occurrence of slippage or the like. Furthermore, an excess length treatment tray 10 as a treatment tray is folded double and the storage space thereof is reduced, thereby improving the storage efficiency of a storage box for housing the excess length treatment tray 10.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for processing an excess length of an optical cable for easily and properly processing the excess length of an optical cable.

[0002]

2. Description of the Related Art Heretofore, for terminating an optical cable, for example, a method has been adopted in which an excess length of an optical cable is fixed together.

In this case, for example, an extra length portion is wound around an elliptical guide portion protruded from a thin rectangular parallelepiped container and fixed. The diameter of the guide portion is the minimum radius of curvature of the optical fiber cable. Is maintained, so that the bending of the optical fiber cable is suppressed.

[0004]

However, in the above-mentioned conventional method of fixing the extra length of the optical fiber cable, the extra length is wound around the guide portion of the thin rectangular parallelepiped container. Because the space for accommodating the optical fiber cable in the thin rectangular parallelepiped container is reduced,
It becomes difficult to wind the optical cable core wire around the guide portion, which hinders the shortening of the working time for extra length processing.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has a simple configuration, and is capable of easily and appropriately performing an extra length processing operation of an optical cable core wire. The purpose is to provide.

[0006]

According to the first aspect of the present invention,
An optical fiber core excess length processing device for processing an excess length of an optical cable core, comprising: a processing tray having a folded first tray portion and a second tray portion; and a first tray portion. And a plurality of engaging pieces provided radially on the second tray portion and on an arc for engaging and holding the extra length of the optical cable core, the extra length portion of the optical cable core being provided. Are straddled over the first tray portion and the second tray portion, and are wound in a figure eight shape.

According to the present invention, the surplus portion of the optical fiber cable can be wound in a figure eight shape over the first tray portion and the second tray portion, and the respective engaging pieces can be wound. A winding operation is performed on the extra length of the core wire while suppressing the occurrence of warping and the like.

Further, since the processing tray is folded in two, the space for accommodating the processing tray is reduced.

According to a second aspect of the present invention, the plurality of engagement pieces in the first tray and the second tray are disposed at symmetric positions in the first and second trays. It is characterized by having been done.

According to the present invention, when the processing tray is folded in two, the corresponding engaging pieces of the first tray and the second tray come into contact with each other. Since a predetermined gap between the tray portions is ensured, and an appropriate rigidity can be obtained even when pressure is applied to each of the first tray portion and the second tray portion by the contact between the engagement pieces, It is possible to stably hold the surplus length of the turned optical cable core.

According to a third aspect of the present invention, the radius of curvature of the engagement piece provided radially on the first tray portion and the second tray portion and provided on a circular arc is equal to that of the optical fiber cable. It is characterized in that it is dimensioned to maintain the minimum radius of curvature.

According to the present invention, each of the first tray section and the second
Since the radius of curvature of the engaging piece provided on the tray portion of the optical cable is set to maintain the minimum radius of curvature of the optical cable core, the winding operation without causing bending or the like to the optical cable core can be performed. It becomes possible.

According to a fourth aspect of the present invention, an engagement projection is provided on the first tray portion, and an engagement hole into which the engagement projection is inserted is formed on the second tray portion. When the processing tray is bent, the bent state is maintained by inserting the engagement protrusion into the engagement hole.

According to the present invention, when the processing tray is bent,
Since the engagement protrusion of the first tray portion is inserted into the engagement hole of the second tray portion, the bent state of the processing tray is maintained by these engagement relationships.

The invention according to a fifth aspect is characterized in that the engagement projection is provided with an engagement projection piece engaged with an opening edge of the engagement hole.

According to the present invention, when the processing tray is bent,
When the engagement protrusion of the first tray portion is inserted into the engagement hole of the second tray portion, the engagement protrusion piece of the engagement protrusion is engaged with the opening edge of the engagement hole. The bent state of the processing tray is more reliably maintained by the engagement of the projection pieces.

[0017]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 to FIG. 4 show an embodiment of an apparatus for processing excess length of an optical cable according to the present invention.

As shown in these figures, the extra-length processing tray 10 made of, for example, resin is formed in a thin plate shape.

The extra length processing tray 10 is provided with tray portions 11a and 11b which can be freely bent as shown in FIG. 2 through two bending line portions 12 orthogonal to the longitudinal direction. ing.

Here, when the trays 11a and 11b are bent, the interval between the trays 11a and 11b is set to the middle plate 13 surrounded by the two bending lines 12.
Is determined by the width.

Further, a rectangular cutout hole 13a is provided at the center of the extra length processing tray 10 to secure a space for the core wire weight.

Further, a plurality of engaging pieces 14 for engaging and holding the optical cable 20 are radially outwardly arranged on each of the trays 11a and 11b. The base 14a of the engagement piece 14 is provided in an upright state perpendicular to the radial direction, so that the engagement piece 14 is moved from the surface of each tray 11a, 11b to the base 14a as shown in FIG. It is arranged at a position that is suspended by the height of.

In the drawing, reference numeral 14b denotes a hole corresponding to each engaging piece 14. Here, the location of the base 14a of the engagement piece 14 in each of the trays 11a and 11b is radial and located on an arc as described above. The radius of curvature of the arc connecting the bases 14a is set to maintain the minimum radius of curvature of the optical cable 20.

As a result, the extra length of the optical cable 2
0 so that each engagement piece 14 is not bent.
Winding over is possible.

When the extra length of the optical cable 20 is wound, a figure-eight winding over the tray portions 11a and 11b is possible. The long optical cable core 20 can be wound.

Further, the engaging pieces 14 of the tray sections 11a and 11b are disposed at positions symmetrical with each other, and when the extra length processing tray 10 is bent, the engaging pieces 14 corresponding to each other are provided. The contact between the tray portions 11a and 11b maintains the gap between the tray portions 11a and 11b.

Further, an engaging projection 15 having an engaging projection piece 15a is provided at the center of each of the tray portions 11a and 11b.
And an engagement hole 16 into which the engagement protrusion 15 is inserted.

When the extra length processing tray 10 is bent, the engaging projection 15 is inserted into the engaging hole 16, and the engaging projection piece 15 a is engaged with the opening edge of the engaging hole 16. The bent state of the extra length processing tray 10 is maintained.

Here, as shown in FIG. 3, the engaging hole 16 is formed on the upper end side of the cylindrical portion 16a, and is formed at a position slightly higher than the surface of the tray portion 11b. I have. In addition, the engagement protrusion 15 on the tray 11a side is
As shown in FIG. 4, when inserted into the engagement hole 16, the upper end thereof has such a height that it does not protrude from the back side of the tray portion 11b.

The extra length processing of the optical cable 20 in the extra length processing tray 10 having such a configuration is performed as follows.

First, as shown in FIG.
1 is left open. In this state, the tray unit 11
The extra length of the optical cable 20 is wound several times in an eight-shape around each of the engagement pieces 14 arranged in the arc shape of a and 11b.

At this time, the wound optical cable 20
Are received by the inner surface of the base portion 14a of each engaging piece portion 14 and are prevented from rising by the inner surface of the engaging piece portion 14, so that not only the winding operation is easy, but also the winding holding is stable. Becomes

At this time, each tray 11a, 11b
As described above, the location of the base portion 14a of the engagement piece portion 14 is radial and located on an arc as described above, and is sized to maintain the minimum radius of curvature of the optical cable 20. The winding operation is performed without causing bending or the like of the wound optical cable core wire 20.

Further, when the extra length of the optical cable 20 is wound, the figure-eight winding over the tray portions 11a and 11b can be performed, so that the winding operation without generation of twisting or the like is possible. Is performed.

After the winding of the optical cable 20 is completed, the tray body 11 is bent as shown in FIG.

At this time, the corresponding engaging pieces 14 of the trays 11a and 11b come into contact with each other,
Since a certain degree of synthesis is maintained, each tray 11
The gap between a and 11b is favorably maintained.

At this time, the engaging projection 15 on the tray 11a is inserted into the engaging hole 16 on the tray 11b, and the engaging projection piece 15a of the engaging projection 15 is fitted to the opening edge of the engaging hole 16. By being engaged, the opening of the tray portions 11a and 11b is suppressed, and the bent state of the extra length processing tray 10 is maintained.

As described above, in the present embodiment, the optical cable cores are straddled over the tray portion 11a as the first tray portion and the tray portion 11b as the second tray portion, and Since the extra length of the optical cable 20 can be wound in the shape of a figure 8, it is possible to perform a winding operation on the extra length of the optical fiber cable 20 while suppressing the occurrence of warping or the like.

Since the extra-length processing tray 10 as a processing tray is folded in two, the extra-length processing tray 10
Since the storage space of the storage box is reduced, the storage efficiency of the storage box that stores the extra-length processing tray 10 can be improved.

Further, in the present embodiment, when the excess length processing tray 10 is folded in two, each of the tray portions 11a, 1
1b, the corresponding engaging pieces 14 abut against each other, so that a predetermined gap between the trays 11a and 11b is secured, and the abutment between the engaging pieces 14 prevents the trays 11a and 11b from being pressed. Also, since an appropriate rigidity is obtained, the extra length of the wound optical cable 20 can be stably held.

Further, in the present embodiment, the radius of curvature of the engagement piece 14 provided on each of the trays 11a and 11b is set to maintain the minimum radius of curvature of the optical cable 20. In addition, it is possible to perform a winding operation without causing bending or the like of the optical cable 20.

In this embodiment, when the excess length processing tray 10 is bent, the engaging projection 15 of the tray 11a is inserted into the engaging hole 16 of the tray 11b. The bent state of the extra length processing tray 10 is maintained.

Further, in the present embodiment, when the extra length processing tray 10 is bent and the engagement projection 15 of the tray portion 11a is inserted into the engagement hole 16 of the tray portion 11b, the engagement of the engagement projection 15 is reduced. Since the mating projection 15a is engaged with the opening edge of the engagement hole 16, the bent state of the extra length processing tray 10 is more reliably maintained by the engagement by the engagement projection 15a.

In the present embodiment, the tray 11
Although the case where five engagement pieces 14 are provided on each of a and 11b has been described, the present invention is not limited to this example, and six or more engagement pieces 14 may be provided. In addition, the engagement piece 1
4 may be four or less. In this case, the bending of the optical cable 20 may be performed by maintaining the minimum radius of curvature of the optical cable 20 by, for example, increasing the size of each engagement piece 14. And the like are suppressed.

Further, the engagement pieces 14 may be formed in a ring shape without providing the engagement pieces 14 individually.

Further, the engagement projection 15 in the present embodiment
The number of the engagement protrusions 15a is not limited, and the engagement protrusions 15a may be formed in a ring shape without providing the engagement protrusions 15 individually.

Further, in this embodiment, the engagement piece 14
Although the description has been given of the case where the base 14a is disposed so as to be orthogonal to the radiation direction, the present invention is not limited to this example, and the base 14a may be curved along the winding direction of the optical cable 20. In this case, the accuracy of the minimum radius of curvature for the wound optical cable 20 can be improved.

[0048]

As described above, according to the optical cable core excess length processing apparatus of the present invention, the optical cable extends over the first tray section and the second tray section and engages with the respective engagement pieces. Since the extra length of the core wire can be wound in a figure-eight shape, it is possible to perform a winding operation on the extra length portion of the optical cable core while suppressing the occurrence of kinks and the like. It is possible to easily and appropriately carry out the extra length processing operation of the optical cable core.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a surplus processing tray according to an embodiment of an optical fiber core surplus processing apparatus of the present invention.

FIG. 2 is a perspective view showing a state in which a tray main body of the extra-length processing tray in FIG. 1 is bent.

FIG. 3 is a sectional view taken along line AA of the extra-length processing tray of FIG. 1;

FIG. 4 is a cross-sectional view of the extra-length processing tray of FIG. 2 taken along line BB.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Extra length processing tray 12 Bending line part 11a, 11b Tray part 14 Engagement piece part 14a Base 15 Engagement projection 15a Engagement projection piece 16 Engagement hole 20 Optical cable core wire

Continuing on the front page (72) Inventor Takahiro Asaga 3--18-14 Takada, Toshima-ku, Tokyo Inside the Hakusan Works, Ltd. (72) Inventor Rama Yamazaki 3--18-14 Takada, Toshima-ku, Tokyo Shirayama Corporation Inside the factory (72) Inventor Shoichiro Taniguchi 2-17-7 Shimomeguro, Meguro-ku, Tokyo Daito Communication Equipment Co., Ltd. (72) Inventor Makoto Kato 2-17-7 Shimomeguro, Meguro-ku, Tokyo Daito Communication Equipment Co., Ltd. (72) Inventor Hiroshi Maejima 3-2-30 Tarumachi, Kohoku-ku, Yokohama-Tokyo Shinki Industry Co., Ltd. (72) Inventor Yoshihiro Horie 3-2-30, Tarumachi, Kohoku-ku, Yokohama, Tokyo Communication Equipment Co., Ltd.

Claims (5)

[Claims] 1. An optical fiber core excess length processing device for processing an extra length of an optical cable core, comprising: a processing tray having a first tray part and a second tray part folded in two; A plurality of engaging pieces which are provided on the first tray portion and the second tray portion and which are radial and provided on an arc, and which engage and hold the extra length of the optical cable core; A surplus length processing device for an optical fiber cable, wherein a surplus length portion of the wire straddles the first tray portion and the second tray portion and is wound in a figure eight shape. 2. A method according to claim 1, wherein the plurality of engaging pieces in the first tray and the second tray are arranged symmetrically in the first and second trays. The apparatus for processing excess length of an optical cable according to claim 1. 3. The radius of curvature of the engagement piece provided radially on the first tray portion and the second tray portion and provided on an arc maintains the minimum radius of curvature of the optical fiber cable. 2. The method according to claim 1, wherein the size is a dimension.
Or an extra length processing device for an optical cable core according to 2. 4. An engaging projection is provided on the first tray portion, and an engaging hole into which the engaging projection is inserted is formed on the second tray portion. 4. The apparatus according to claim 1, wherein the bent state is maintained by inserting the engagement protrusion into the engagement hole when the optical fiber cable is bent. . 5. The engagement projection according to claim 1, wherein said engagement projection is provided with an engagement projection piece engaged with an opening edge of said engagement hole. Extra length processing device for optical fiber cable.