JP3985962B2 - Optical fiber extra length storage case and optical fiber extra length storage device - Google Patents

Description

  The present invention relates to an optical fiber surplus storage case and an optical fiber surplus storage device, and for example, an optical fiber surplus storage case and an optical fiber surplus case that can store surplus portions of optical fiber cores connected by a connecting portion. The present invention relates to a long storage device.

2. Description of the Related Art Conventionally, as shown in FIG. 8, an optical fiber extra length storage case for storing an extra length of an optical fiber core having a connecting portion is known (see, for example, Patent Document 1).
As shown in FIG. 9, the optical fiber extra-length storage case 100 includes a bottom plate 101, a side plate 102 provided to face both sides in the longitudinal direction of the bottom plate 101, and an arc shape provided at both ends of the side plate 102. The end plate 103 is formed in a box shape.

  And the core wire introduction part 104 of the optical fiber core wire 120 is provided in the intersection part of the both ends of the side plate 102 above the extra length storage case 100 formed in this box shape and the arc-shaped end plate 103. Yes. A separation guide 105 extending from the arc-shaped end plate 103 to the inner side of the extra length storage case 100 is provided inside the extra length storage case 100 of the core wire introduction portion 104. The lower side of the separation guide 105 is a surplus length storage portion 106, and an intermediate portion in the surplus length storage portion 106 has a radius of curvature equal to or less than a predetermined curvature when the surplus length core wire 121 is stored, that is, an optical fiber. A ring-shaped extra length guide 107 is provided so as not to be less than the allowable curvature radius (for example, R = 30 mm) of the core wire 120. Further, the surplus length storage portion 106 is provided with a plurality of prevention fins 108 for preventing the surplus length core wire 121 from jumping out.

  An optical fiber core wire connecting portion fixing portion 109 is provided at the center of the excess length storage portion 106, and a comb-shaped fin 110 is erected in parallel on the bottom plate 101 of the excess length storage case 100. By inserting the optical fiber extra long core wires 121 connected to both sides of the connecting portion 122 between the fins 110 and the fin 110, the connecting portions 122 of the optical fiber core wires 120 can be fixed one by one. It has become.

By the way, when storing the extra long core 121 of the optical fiber core wire 120 in the extra optical fiber storage case 100 as described above, in order to prevent the extra long core 121 from being twisted, a special case is used. The way of storing is performed.
9A to 9D show a procedure for storing, for example, the extra long core 121 with three turns.

First, as shown in FIG. 9A, it is confirmed that there is no twist in a state where the connecting portion 122 is rotated once and the extra long core wire 121 is crossed.
Next, as shown in FIG. 9B, each extra long core 121 is crossed to form three rings.

Next, as shown in FIG. 9 (C), the lowermost ring is turned inside and overlapped with the upper ring.
Then, as shown in FIG. 9 (D), the overlapped ring is further returned, overlapped with the uppermost ring, and stored in the extra length storage unit 106.

  Therefore, in order to store the extra long core wire 121 in the optical fiber extra length storage case 100 so as not to twist, it is necessary to wind the extra long core wire 121 by the special winding method as described above, which is troublesome and technical. There is a problem that requires.

Therefore, as shown in FIG. 10, an optical fiber extra-length storage case 130 that can be easily stored without twisting the extra-core is proposed (for example, see Patent Document 2).
As shown in FIG. 10, in this optical fiber extra-length storage case 130, an operation lever 133 and a movable guide 134 are connected to a box 132 in which an intermediate portion of the optical fiber cord 131 is accommodated. It is provided so as to be capable of reciprocating along the longitudinal direction of 130.

Accordingly, the extra length portion 131a of the optical fiber cord 131 is hooked on the movable guide 134 and the operation lever 133 is moved so that the optical fiber cord 131 can be accommodated inside the extra optical fiber length storage case 130 so as not to be twisted. it can.
Japanese Patent No. 3334409 (FIG. 1) Japanese Patent Laid-Open No. 2002-258065 (FIG. 1)

  In the meantime, in the optical fiber extra length storage case 130 shown in FIG. 10, the optical fiber cord 131 can be easily accommodated without being twisted, but there is a connection portion, a branching portion or the like in the middle of the extra length portion 131a. Had the inconvenience that they could not be accommodated well.

  Accordingly, an object of the present invention is to solve the above-mentioned problems, and an optical fiber extra storage case and an optical fiber extra length that can be easily accommodated without twisting an optical fiber core having functional parts in the extra length portion. It is to provide a storage device.

An optical fiber surplus storage case according to the present invention includes a functional component storage for storing and fixing a functional component attached to an optical fiber core, and a surplus length adjacent to the functional component storage and connected to the functional component. An optical fiber extra-length storage case provided with an optical fiber core wire storage part that stores the part folded back ,
The optical fiber core storage part is separated by a locking member as a partition part for separating and separately accommodating an upstream surplus length part and a downstream surplus length part connected to the functional component. The first storage part for storing the upstream surplus length part and the second storage part for storing the downstream surplus length part are connected by a thin hinge so as to be opened and closed,
One of the entrances of the optical fiber core storage part is provided on the upstream side of the functional part storage part, and the other is provided on the downstream side of the functional part storage part,
A guide bending portion for introducing the optical fiber core wire is provided in the vicinity of the entrance of the optical fiber core storage portion .

  The optical fiber extra-length storage case of the present invention is connected to the functional component storage unit that stores and fixes the functional component attached to the optical fiber core, and is adjacent to the functional component storage unit. An optical fiber extra-length storage case provided with an optical fiber core wire storage portion that stores the extra length portion in a folded manner,
  The optical fiber core storage part is separated by a locking member as a partition part for separating and separately accommodating an upstream surplus length part and a downstream surplus length part connected to the functional component. A first storage portion for storing the upstream excess length portion and a second storage portion for storing the downstream excess length portion,
  The first storage part attached to the storage case body so as to be pivotable about a rotation shaft provided on the upstream side of the functional part storage part, and the downstream side of the functional part storage part with respect to the storage case body And a second storage portion attached to be rotatable about a rotation axis provided in the storage portion so as to overlap each other.
  A guide bending portion for introducing the optical fiber core wire is provided in the vicinity of the entrance of the optical fiber core storage portion.

  The optical fiber surplus length storage device of the present invention is characterized in that a plurality of the optical fiber surplus length storage cases are stored so as to be removable.

  According to the optical fiber extra-length storage case of the present invention, when storing the optical fiber core wire to which the functional component is attached, the functional component is stored and fixed in the functional component storage portion and connected to the functional component. Since the surplus length portion is folded and accommodated in the optical fiber core wire accommodating portion, the surplus length portion of the optical fiber core wire having the functional parts can be easily accommodated without being twisted.

Embodiments according to the present invention will be described below in detail with reference to the accompanying drawings.
FIG. 1 is a partially broken perspective view showing an optical fiber extra length storage case according to a first reference example of the present invention.

As shown in FIG. 1, the optical fiber extra length storage case 10 </ b> A according to the first reference example of the present invention stores a functional component that stores and fixes, for example, a connection portion 21 as a functional component attached to the optical fiber core wire 20. And an optical fiber core wire storage portion 40 that is adjacent to the functional component storage portion 30 (here, adjacent to the lower side) and that stores the excess length portion 22 of the optical fiber core wire 20 in a folded manner.

  As shown in FIG. 1, the optical fiber extra-length storage case 10A has a rectangular box shape made of resin as viewed from the front, and has optical fiber cores on the upper ends of both longitudinal end faces (left and right end faces in FIG. 1). Openings 11a and 11b through which the line 20 enters or exits are provided, and a lid 12 is provided on one end surface in the short direction (upper end surface in FIG. 1) so as to be opened and closed.

A functional component storage unit 30 is provided in the upper part of the optical fiber extra length storage case 10A.
Therefore, when the lid 12 is opened, the connection portion 21 can be easily housed and fixed in the functional component housing portion 30.
Note that a pair of elastic locking pieces 31 a and 31 b that can sandwich and fix the connection portion 21 are provided in the fixing portion 31 in order to store and fix the connection portion 21 in the functional component storage portion 30.

An optical fiber core storage portion 40 for storing the extra length portion 22 of the optical fiber core wire 20 is provided adjacently below the functional component storage portion 30 in the optical fiber extra length storage case 10A. Yes.
The upstream surplus length portion 22a and the downstream surplus length portion 22b connected to the connection portion 21 are folded back at the inner end of the optical fiber surplus length storage case 10A, respectively. It is stored in the core wire storage unit 40.
For this reason, it is not necessary to make the extra length part 22 ring-shaped by a special method as in the prior art, and the extra length part 22 can be easily stored.

Therefore, when storing the extra length portion 22 of the optical fiber core wire 20 in the optical fiber extra length storage case 10A, first, the lid 12 is opened and the connection portion 21 is press-fitted between the pair of elastic locking pieces 31a and 31b. Then, the lid is closed by passing the upstream surplus length portion 22a and the downstream surplus length portion 22b through the openings 11a and 11b.
Then, when the extra length portions 22a and 22b of the optical fiber core wire 20 are pushed into the front and rear openings 11a and 11b, the extra length portions 22a and 22b are folded back by the optical fiber core wire storage portion 40. Be contained.

Alternatively, after the lid 12 is opened and the connection portion 21 is fixed to the functional component storage portion 30, the extra length portions 22a and 22b are folded back and stored in the optical fiber core storage portion 40 with the lid 12 opened. . And even if it closes the lid | cover 12 last, the surplus length part 22 can be accommodated.
Therefore, according to the optical fiber extra length storage case 10A described above, the extra length portion 22 of the optical fiber core wire 20 having the connection portion 21 can be easily accommodated without twisting.

2A is a partially broken perspective view showing an optical fiber extra length storage case according to a second reference example of the present invention, and FIG. 2B is a cross-sectional view taken along line BB in FIG. 2A. It is.
In addition, the same code | symbol is attached | subjected to the site | part which is common in the 1st reference example mentioned above, and the overlapping description is abbreviate | omitted.

In the optical fiber extra length storage case 10B of the second reference example , a guide bending portion 42 for introducing the optical fiber core wire 20 is provided in the vicinity of the entrance 41 of the optical fiber core wire storage portion 40. As a result, the excess length portion 22a on the upstream side of the optical fiber core 20 to be stored is prevented from undergoing a sharp bend of an allowable bending radius (for example, R = 7.5 mm) or less, so that the optical fiber core wire storage portion 40 is obtained. Can lead to.
As the shape of the guide curved portion 42, for example, as shown in FIG. 2A, a curve that smoothly continues from a convex arc to a concave arc, or a higher-order curve having a similar shape may be used. . Alternatively, it may be simply a straight slope.

  Further, the optical fiber core storage section 40 shown in FIG. 2 has an optical fiber core storage section 40a for storing the excess length portion 22a on the upstream side (left side in FIG. 2A) connected to the connection section 21. And a wall 43 that is a partition for separating and storing the optical fiber core wire storage portion 40b that stores the excess length portion 22b on the downstream side (right side in FIG. 2A). .

Therefore, for example, the upstream surplus length portion 22a is folded back and stored in the optical fiber core storage portion 40a on the near side of the wall 43 in FIG. 2A, and the downstream surplus length portion 22b is stored in FIG. Are folded and stored in the optical fiber core storage section 40b on the back side of the wall 43.
In FIG. 2, only the guide bending portion 42 provided in the optical fiber core housing portion 40a on the near side is shown, but the guide optical fiber housing portion 40b is also used for guiding. A curved portion 42 is provided.

As described above, according to the optical fiber extra length storage case 10B, the extra length portion 22 can be smoothly guided into the optical fiber core wire storage portion 40 by the action of the guide bending portion.
In addition, since the optical fiber core wire storage part 40 is separated by the wall 43, the excess length part 22a on the upstream side and the excess length part 22b on the downstream side are not entangled, and the excess length part 22 is stored in an orderly manner. In addition, only the one extra length 22a (or 22b) can be easily taken out.

FIG. 3 is a perspective view of the optical fiber extra length storage case according to the first embodiment of the present invention. In addition, the same code | symbol is attached | subjected to the site | part which is common in the 1st, 2nd reference example mentioned above, and the overlapping description is abbreviate | omitted.
As shown in FIG. 3, the optical fiber extra length storage case 10C according to the first embodiment includes an upstream extra length portion in which the optical fiber core wire storage portion 40 is separated by a locking member 44 as a partition portion. It has a first storage portion 45A for storing 22a and a second storage portion 45B for storing a downstream excess length portion 22b.

The first storage portion 45A and the second storage portion 45B are connected to each other by a thin hinge 46 so as to be opened and closed.
Further, a slit 44 a for inserting the extra length portions 22 a and 22 b inside the locking member 44 is provided at the center of the partition member 44.
The first storage portion 45A and the second storage portion 45B are provided with locking means (not shown) for holding them in a closed state.

Therefore, when the extra length portion 22 is accommodated in the optical fiber extra length accommodation case 10C of the first embodiment, first, the first accommodation portion 45A and the second accommodation portion 45B are opened as shown in FIG. And
Next, the connecting portion 21 is attached to the functional component storage portion 30, and the upstream surplus length portion 22a and the downstream surplus length portion 22b are folded back and stored in the first storage portion 40A and the second storage portion 40B, respectively. At this time, the extra length portions 22a and 22b are inserted into the locking member 44 from the slit 44a.
Then, the first storage portion 45A and the second storage portion 45B are closed by being rotated by the thin hinge 46, and are integrated as illustrated by an imaginary line in FIG.

As described above, according to the optical fiber surplus length storage case 10C of the first embodiment, the upstream surplus length portion 22a and the downstream surplus length portion 22b connected to the connecting portion 21 are respectively connected to the first. When separately folded and stored in the storage portion 45A and the second storage portion 45B, the first storage portion 45A and the second storage portion 45B can be held in the locking member 44 in an opened state, so that the surplus can be easily performed. The long portion 22 can be stored, and workability is improved.

  Further, each of the extra length portions 22a and 22b is separated by the locking member 44 and is folded and stored in the first storage portion 45A and the second storage portion 45B separately formed, so that these first storage portions Even when 45A and the second storage portion 45B are closed, the extra length portions 22a and 22b can be folded and stored without being entangled.

FIG. 4 is a partially broken perspective view of an optical fiber extra length storage case according to the second embodiment of the present invention. In addition, the same code | symbol is attached | subjected to the site | part which is common in 1st Embodiment mentioned above, and the overlapping description is abbreviate | omitted.

As shown in FIG. 4, an optical fiber extra length storage case 10 </ b > D according to the second embodiment includes an upstream extra length portion in which the optical fiber core wire storage portion 40 is separated by a locking member 44 as a partition portion. It has a first storage portion 45A for storing 22a and a second storage portion 45B for storing a downstream excess length portion 22b.
The first storage portion 45A and the second storage portion 45B are attached to the storage case body 13 so as to be pivotable about the rotation shaft 47, and are open on the lower surface of the storage case body 13 having a rectangular box shape. 13a is stored inside.

Therefore, when storing the extra length portions 22a and 22b in the optical fiber extra length storage case 10D, first, the first storage portion 45A and the second storage portion 45B are turned around the rotation shaft 47, respectively. The storage case body 13 is pulled out from the opening 13a on the lower surface.
Next, the connecting portion 21 of the optical fiber core wire 20 is attached to the functional component storage portion 30, and the extra length portions 22 a and 22 b are passed through the openings 11 a and 11 b provided on the end surface in the longitudinal direction of the storage case body 13.

Then, the upstream surplus length portion 22a and the downstream surplus length portion 22b are folded back and stored in the first storage portion 45A and the second storage portion 45B, respectively, in the same manner as in the third embodiment described above.
Then, the first storage portion 45 </ b> A and the second storage portion 45 </ b> B are respectively turned around the rotation shaft 47 and stored in the storage case body 13 from the opening 13 a on the lower surface. Since the first storage portion 45A and the second storage portion 45B stored in the storage case body 13 are stored so as to overlap each other as shown in FIG.

As described above, according to the optical fiber surplus length storage case 10D of the second embodiment, the upstream surplus length portion 22a and the downstream surplus length portion 22b connected to the connection portion 21 are connected to the first. When separately folded and stored in the storage portion 45A and the second storage portion 45B, the first storage portion 45A and the second storage portion 45B can be pulled out from the storage case body 13 and held by the locking member 44. The extra length portion 22 can be easily folded and stored, and workability is improved.

Further, each of the extra length portions 22a and 22b is separated by the locking member 44 and is folded and stored in the first storage portion 45A and the second storage portion 45B separately formed, so that these first storage portions Even if 45A and the 2nd accommodating part 45B are closed, both the surplus length parts 22a and 22b can be accommodated without being entangled.

FIG. 6 is a perspective view showing an embodiment of the optical fiber surplus length storage device of the present invention. As shown in FIG. 6, the optical fiber extra length storage device 50 of the present embodiment includes a storage device body 51 having a rectangular cross-section box shape whose upper surface is open, and the storage device body 51 has an upper lid 52 that covers the opening. Is provided to be freely opened and closed.
The front wall 53 a and the rear wall 53 b of the storage device main body 51 are provided with a gap 54 between the upper cover 52 and the optical fiber core wire 20.

A plurality of optical fiber extra-length storage cases are removably stored in the storage device main body 51.
The configuration of each optical fiber extra length storage case is, for example, substantially the same as the configuration in which the cover 12 is removed from the optical fiber extra length storage case 10A described above, and the extra length portions 22a and 22b are provided in the optical fiber core wire storage portion 40. It is stored in a folded manner.

  As described above, according to the optical fiber surplus length storage device 50 of the present embodiment, a plurality of optical fiber surplus length storage cases storing the surplus length portion 22 of the optical fiber core wire 20 connected to the connection portion 21 are provided. Since the individual pieces can be stored, the plurality of extra length portions 22 can be stored orderly without being entangled. Further, it is easy to take out a desired optical fiber extra-length storage case, and it is possible to easily perform operations such as connection and branching by taking out the desired optical fiber core wire 20.

FIG. 7 is a perspective view showing another embodiment of the extra optical fiber length storage device.
The optical fiber surplus storage device 60 shown in FIG. 7 is capable of storing a plurality of optical fiber surplus storage cases 10A in a plurality of drawers 61 in a juxtaposed state. The wire 20 can be stored.
Therefore, the present invention is applied to, for example, an optical connection box and a closure.

In addition, the optical fiber surplus length storage case and the optical fiber surplus length storage device of the present invention are not limited to the above-described embodiments, and it goes without saying that various forms can be taken based on the spirit of the present invention. .
For example, in each of the embodiments described above, the connection portion 21 is exemplified as a functional component, but the present invention can also be applied to other functional components such as an optical splitter.
Moreover, as the optical fiber extra length storage case, a rectangular shape in a front view is illustrated as an example, but it is not limited to this.

It is a partially broken perspective view which shows the optical fiber surplus length storage case which concerns on the 1st reference example of this invention. (A) is a partially broken perspective view which shows the optical fiber surplus length storage case which concerns on the 2nd reference example of this invention, (b) is a BB cross-sectional arrow view in (a). It is a perspective view of the optical fiber surplus length storage case which concerns on 1st Embodiment of this invention. It is a partial fracture perspective view of the optical fiber surplus length storage case concerning a 2nd embodiment of the present invention. In FIG. 4, it is the arrow view seen from the V direction. It is a perspective view which shows embodiment which concerns on the optical fiber surplus length storage apparatus of this invention. It is a perspective view which shows other embodiment which concerns on an optical fiber surplus length storage apparatus. It is sectional drawing which shows an example of the conventional optical fiber surplus length storage case. It is explanatory drawing explaining the storage method of the conventional extra long core wire. It is a perspective view which shows the other example of the conventional optical fiber surplus length storage case.

Explanation of symbols

10A Optical fiber extra length storage case 13 Storage case body 20 Optical fiber core wire 21 Connection part (functional component)
22 Surplus length portion 22a Upstream surplus length portion 22b Downstream surplus length portion 30 Functional component storage portion 40 Optical fiber core wire storage portion

Claims (3)

A functional component storage unit for storing and fixing a functional component attached to the optical fiber core, and an optical fiber core storage unit for folding back and storing an extra length portion adjacent to the functional component storage unit and connected to the functional component An optical fiber extra-length storage case with
The optical fiber core storage part is separated by a locking member as a partition part for separating and separately accommodating an upstream surplus length part and a downstream surplus length part connected to the functional component. The first storage part for storing the upstream surplus length part and the second storage part for storing the downstream surplus length part are connected by a thin hinge so as to be opened and closed,
One of the entrances of the optical fiber core storage part is provided on the upstream side of the functional part storage part, and the other is provided on the downstream side of the functional part storage part,
An optical fiber extra-length storage case , wherein a guide bending portion for introducing the optical fiber core is provided near the entrance of the optical fiber core storage.   A functional component storage unit for storing and fixing a functional component attached to the optical fiber core, and an optical fiber core storage unit for folding back and storing an extra length portion adjacent to the functional component storage unit and connected to the functional component An optical fiber extra-length storage case with
  The optical fiber core storage part is separated by a locking member as a partition part for separating and separately accommodating an upstream surplus length part and a downstream surplus length part connected to the functional component. A first storage portion for storing the upstream excess length portion and a second storage portion for storing the downstream excess length portion,
  The first storage part attached to the storage case body so as to be pivotable about a rotation shaft provided on the upstream side of the functional part storage part, and the downstream side of the functional part storage part with respect to the storage case body And a second storage portion attached to be rotatable about a rotation axis provided in the storage portion so as to overlap each other.
  An optical fiber extra-length storage case, wherein a guide bending portion for introducing the optical fiber core is provided near the entrance of the optical fiber core storage. An optical fiber surplus length storage device, wherein a plurality of optical fiber surplus length storage cases according to claim 1 or 2 are removably stored.

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