JPS6337305A - Optical fiber containing case - Google Patents

Abstract

PURPOSE:To safely execute a fixing work of a cable and an optical connector, etc., to a rack, by containing stably an optical fiber in an uncovered state of an optical fiber cable side, an optical fiber of an optical code provided with the optical connector, and a reinforcing part for reinforcing a connecting part of both the optical fibers, in a recessed part and a containing groove which have been provided on a case body. CONSTITUTION:An optical fiber 12 being in an uncovered state from a cable 10 is made to pass through an insert-through groove 24f, and wound round annularly in an inside recessed part 24a. A reinforcing part 15 is contained in a containing groove 24d in a raised surface part 24c. Subsequently, an inner cover 25 is fixed to a fitting seat 24e with a screw 26, and roughly the lower half of the inside recessed part 24a and the containing groove 24d are covered with the inner cover 25. In this way, the reinforcing part 15 is held in a roughly fixed state in the containing groove 24d. An optical fiber 14 of an optical code 12 side and the optical code 12 are wound around on the inner cover 25 and along an outside recessed part 24b, and the optical code 12 is fixed to the outside recessed part 24b by a fixing tool 29. The tip side of the optical code 12 is drawn out to the outside of the side part of a case body 21 from an insert-through groove 24g and held by a holder 31. Thereafter, an outer cover 27 is attached to a case body 20 and the whole recessed part 24 is occluded.

Description

[Detailed Description of the Invention] [Summary] The present invention relates to an optical fiber that has been exposed through termination processing of an optical fiber cable that has been drawn into a rack, and that is connected to the optical fiber within a rod-shaped reinforcing portion. and an optical fiber storage box for storing an optical cord having an optical connector at the tip in a rack, the box having a recess provided on at least one side of a box body attached to the rack, and a storage groove in the recess. Optical fibers, optical cords, reinforcing parts, etc. are accommodated in each box, and these are stably held within the box body by means of an inner cover, a fixture, an outer cover, etc.

[Industrial application field]

The present invention relates to an optical fiber storage box for storing, in a rack, optical fibers after termination of optical fiber cables such as optical submarine cables.

[Prior art and its problems]

Generally, an optical submarine cable drawn into a rack is terminated, and the exposed optical fibers from inside the cable are connected by splicing to the exposed optical fibers of the optical cords each equipped with an optical connector. A rod-shaped reinforcing portion is fixed to the connecting portion.

After that, the cables and optical connectors are fixed in place within the rack, but in the past, exposed optical fibers were not protected in any way within the rack, so when fixing the cables and optical connectors to the rack, The exposed optical fiber is easily damaged, and is particularly susceptible to excessive tension, bending force, etc. before and after the reinforcing portion. Therefore, there is a need for an optical fiber storage box that can safely protect and store exposed optical fibers within a rack.

[Means for solving problems]

In view of the above-mentioned problems, the present invention provides an optical fiber that is exposed by terminating an optical fiber cable that has been drawn into a rack, and an optical connector that is connected to the optical fiber within a rod-shaped reinforcing part and has an optical connector at the tip. An optical fiber storage box for storing an optical fiber and an optical cord in a rack, the box body being attached to the rack has a recess for accommodating the optical fiber and the optical cord on at least one side, and a reinforcing part in the recess. The box body includes an inner lid that covers a part of the recess and the accommodation groove,
To provide an optical fiber storage box characterized by being provided with a fixture for fixing an optical cord in a recess and an outer cover covering the entire recess.

[For production]

According to the above means according to the present invention, the box body is provided with an exposed optical fiber on the optical fiber cable side, an optical fiber of an optical cord having an optical connector, and a reinforcing portion for reinforcing the connecting portion of both optical fibers. Since it can be stably stored in recesses and storage grooves, there is no need to damage exposed optical fibers or apply excessive tension or bending force to the optical fibers when fixing cables or optical connectors to racks. can be prevented.

〔Example〕

Hereinafter, the present invention will be described in detail with reference to the drawings.

1 to 6 show one embodiment of the present invention. FIG. 1 shows an optical fiber cable lO, such as an optical submarine cable, after termination. cable 1
Optical fiber 11 exposed through termination treatment
is connected by splicing to an optical fiber 14 of an optical cord 12 having an optical connector 13 at its tip, and a rod-shaped reinforcing portion 15 is fixed to the connecting portion of both optical fibers 11 and 14.

The optical fiber cable 10 is drawn into the rack 16 from above (see FIG. 2) and terminated. Rack 16
is provided with two support plates 17, 18 which are vertically spaced apart from each other.

Referring to FIGS. 1 to 5, optical fiber storage box 1
9 includes a box body 20. The box body 20 is a support plate 17
．． A fitting hole 20a rotatably fits into a pivot shaft 21.22 provided in 18.

20b (see FIGS. 1 and 5) are provided at the center of the top and bottom surfaces, and by fitting the pot shafts 21 and 22 into both holes, the box body 20 is rotated between the support plates 17 and 18. Possibly supported. A bushing 23 is fitted onto the outer periphery of the lower pivot shaft 22 to support the lower surface of the box body 20.

As shown in FIGS. 1 and 4, optical fibers 11 and 14 and optical cords 12 are provided on both the front and back sides of the box body 20, respectively.
A recess 24 is provided for accommodating the. The recess 24 includes an annular internal recess 24a for accommodating the optical fiber 11 between the cable 10 and the reinforcing section 15, and an annular internal recess 24a for accommodating the optical fiber 11 between the reinforcing section 15 and the optical connector 13, and an internal recess 24a for accommodating the optical fiber 11 and the optical cord 12 between the reinforcing section 15 and the optical connector 13. and an external recess 24b for accommodating it. The outer recess 24b is formed to surround approximately the upper half of the annular inner recess 24a.

A raised surface portion 24C is formed inside the box body 20 and surrounds approximately the lower half of the internal recess 24b.
accommodating groove 24d for accommodating the rod-shaped reinforcing part 15 in c
is formed. A mounting seat 24e for the inner portion 125 is provided inside the annular inner recess 24a and around the raised surface portion 24c.
is formed. Is the inner lid 25 accommodated in approximately the lower half of the inner recess 24a? It is formed so as to cover the a24d.

The inner cover 25 can be fixed to the mounting seat 24e with screws 26, for example.

On both the front and back sides of the box body 20, there is an outer M that covers the entire recess 24.
21 can be fixed with screws 28, for example.

When viewed from the front and back sides of the box body 20, the outer recess 24b is at the shallowest position, the mounting seat 24e is at a position deeper than the outer recess 24b by approximately the thickness of the inner cover 25, and the raised surface portion 24C is located at the shallowest position. It is located deeper than the seat 24e, and the internal recess 24a is located at the deepest position.

Further, on both the front and back sides of the box body 20, there is an optical fiber insertion groove 24f that opens from the internal recess 24a toward the top surface of the box body 20, and an optical fiber insertion groove 24f that opens from the external recess 24b toward the other side surface of the box body 20. An optical cord insertion groove 24g is formed.

A fixture 29 for fixing the optical cord 12 can be fixed to the external recess 24b with, for example, a screw 30.

Note that in order to prevent damage to the optical cord 12, the fixture 2
A buffer sheet 29a made of rubber or the like is provided on the inner surface of the housing 9.

A holder 31 for holding the optical cord 12 pulled out from the recess 24 can be fixed to the side surface of the box body 20.

FIGS. 6(a) to 6(C) show the order in which optical fibers and the like are stored in the optical fiber storage box. Referring to the figure, first, as shown in FIG. 6(a), the cable 10
The optical fiber 12 exposed from the
, and then wound in an annular manner within the internal recess 24a. Then, the reinforcing portion 15 is accommodated in the accommodation groove 24d within the raised surface portion 24C.

Next, as shown in FIG. 6(b), the inner cover 25 is fixed to the mounting seat 24e with screws 26, and the inner cover 25 is inserted into the inner recess 24 by the inner cover 25.
Covers substantially the lower half of a and the housing groove 24d. This results in
The reinforcing portion 15 is held in a substantially fixed state within the housing groove 24d. The optical fiber 14 on the optical cord 12 side and the optical cord 12 are wound on the inner cover 25 and along the outer recess 24b, and the optical cord 12 is fixed to the outer recess 24b by a fixture 29.

The leading end of the optical cord 12 is pulled out from the insertion groove 24g to the side of the box body 21 and held in the holder 31.

Thereafter, the outer M27 is attached to the box body 20 to close the entire recess 24.

Once the optical fibers and the like have been stored on one side of the box body 20 as described above, as can be seen from FIGS. 2 and 3, the box body 20 is rotated approximately 180 degrees and the back side is located on the front side of the rack 16, and other optical fibers and the like are housed on the other side of the box body 20 in the same order as described above.

As shown in FIG. 1, a stopper 32 for the box body 18 is provided on the lower support plate 18 of the rack 16. As shown in FIG. The stopper 32 has a retractable tip 32a, which is urged toward the protruding side by a spring force. As shown in FIG. 5, two holes 34 and 35 are formed in the bottom of the box body 20, located on either side of the fitting hole 33 for the pivot shaft 22.

When the front and back sides of the box body 20 are directed toward the front of the rack 16, the tip of the stopper 32 engages with one of the holes 34 and 35, so that the box body 20 can be held in that position. Therefore, it is possible to easily store optical fibers and the like.

After storing optical fibers, etc. on both the front and back sides of the box body 20, the box body 20 is placed in a position where the holder 31 faces the front of the rack 16, as shown by the solid line in FIG. Then, insert the fixing screw 35 passed through the hole 36 of the lower support plate 18.
The box main body 20 can be fixed by inserting or screwing into the holes 34, 35, etc. of the box main body 20. A receiver of the optical connector 13 attached to the lower support plate 18 is connected to a connector (not shown).

Although the illustrated embodiments have been described above, the present invention is not limited to the embodiments described above, and various changes can be made to the constituent elements within the scope of the invention described in the claims. can. For example, in the above embodiment, recesses and the like are formed on both the front and back sides of the box body to accommodate two sets of optical fibers, but the recesses and the like may be formed only on one side. In this case, it is sufficient to fix the box body to the rack.

On the other hand, for example, three or more sets of optical fibers may be stored by forming recesses on three or more sides of the box body. In this case, each side of the box body may face the front of the rack. It is preferable that the box body be stopped by a stopper in the direction (position).

The recess or the receiving groove can be formed in the box body in various forms.

〔Effect of the invention〕

As is clear from the above description, according to the present invention, the exposed optical fiber on the optical fiber cable side, the optical fiber of the optical cord equipped with the optical connector, and the reinforcing part for reinforcing the connection part between the two optical fibers. can be stably stored in the recesses and storage grooves provided in the box body, so when fixing cables and optical connectors to the rack, there is no need to damage the exposed optical fibers or apply excessive tension or bending to the optical fibers. It is possible to prevent the application of force. Therefore, by using the optical fiber storage box according to the present invention, it becomes possible to safely perform the work of fixing cables, optical connectors, etc. to the rack.

[Brief explanation of drawings]

FIG. 1 is an exploded perspective view of an optical fiber storage box showing an embodiment of the present invention, FIG. 2 is a front view showing the storage box shown in FIG. 1 assembled on a rack, and FIG. Figure 4 is a cross-sectional view of the storage box and rack shown in Figure 2 taken along line mm-m, Figure 4 is a cross-sectional view of the storage box shown in Figure 1 taken along line IV-IV in Figure 2, Figure 5 is shown in Figure 1. Bottom view of storage box, Figure 6(a)~
(C) is a front view showing the order in which optical fibers and the like are stored in the storage box shown in FIG. 1; In the figure, 10 is an optical fiber cable, 11 is an optical fiber, 12 is an optical cord, 13 is an optical connector, 14 is an optical fiber, 15 is a reinforcement part, 16 is a rack, 17.18 is a support plate, 19 is a storage box, 20 is a box body, 21.22 is a pivot shaft, 24 is a recess, 24a is an internal recess, 24b is an external recess, 24d is a housing groove, 24f and 24g are insertion grooves, 25 is an inner lid, and 27 is an outer lid. , 29 is a fixture, 31 is a holder, and 32 is a stopper, respectively.

Claims (1)

[Claims] 1. Optical fiber cable (
The optical fiber (11) exposed by the termination treatment of (10) and the optical fiber (11) exposed within the rod-shaped reinforcing portion (15)
An optical fiber storage box (19) for storing in a rack (16) an optical cord (12) connected to an optical fiber (11) and equipped with an optical connector (13) at the tip thereof, the optical fiber storage box (19) being attached to the rack (16). A recess (24) for accommodating the optical fiber (11) and the optical cord (12) on at least one side of the box body (20), and a reinforcing portion (15) within the recess (24).
A housing groove (24d) is provided in the box body (20) to accommodate a part of the recess (24) and a housing groove (24d).
4d), a fixture (29) for fixing the optical cord (12) to the recess (24), and an inner lid (25) that covers the recess (24).
4) An optical fiber storage box characterized by being provided with an outer lid (27) that covers the entirety. 2. The recess (24) is inside the inner cover (25) and the optical fiber (
11) and an inner recess (24a) for accommodating the inner lid (24a).
25. An optical fiber storage box according to claim 1, further comprising an external recess (24b) for accommodating the optical cord (12) on the outside of the optical fiber storage box (25). 3. The box body (20) has a holder (31) for holding the optical cord (12) pulled out from the recess (24).
). The optical fiber storage box according to claim 1, wherein the optical fiber storage box is provided with: 4. The optical fiber storage box according to claim 1, wherein the box body (20) is rotatably attached to the rack (16).