JP2001318240A - Casing for housing slack in optical cable - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a casing for housing a slack in an optical cable, which is simply composed, easily formed, manufactured at a low cost without necessitating permission of a user. SOLUTION: The casing is provided with inserting parts 3, 13, 48 which are formed of synthetic resin material and through which an incoming line H for a distribution line is inserted and housing parts 4, 14, 49 for housing the slack part f of the optical cable which is additionally provided in the incoming line H for the distribution line in a state of being wound and held.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention holds an extra length of an optical cable attached to a distribution line drop-in line for connection to a transmission device until a customer installs the transmission device in the building. The present invention relates to an extra-length storage case for an optical cable.

[0002]

2. Description of the Related Art Conventionally, for example, an optical cable used as a communication line for a drop line is drawn out along a drop line for a distribution line branched from a distribution line. That is, a transmission device is provided on a trunk line, a drop line is provided from the transmission device along a drop line for a distribution line, and the drop line is connected to a transmission device installed in a building of a customer. by the way,
To connect an optical cable to a transmission device in a building, it is necessary to secure a certain extra length. Therefore, the lead-in line of the optical cable temporarily retains its extra length near the branch of the main line or around the building of the customer until connection work to the transmission equipment is started. For example, near the branch of the trunk line, when the closure is provided at the branch connection portion, the extra length portion is accommodated in the inside, and when there is no closure, the extra length portion is held on the trunk line by means such as taping. On the other hand, if the connecting part storage cabinet is pre-installed on the outer wall of the customer's building, etc., the extra length will be housed inside the drop-in wire, or if not, the extra length will be locked with the distribution wire drop-in wire. It is designed to be held by taping or other means near the anchoring tool.

[0003]

However, the closure and the cabinet for storing the connection portion are complicated in structure and difficult to form, and the production cost is high. In particular, the cabinet for storing the connection portion is a drop-in wire for unilateral expansion of facilities. When constructing a building, not only must the permission of the consumer be required, but it must be installed by drilling holes in the outer wall of the building, which is difficult and requires a great deal of labor. There was a problem that there was a risk of damage. Further, holding the excess length portion to the trunk line or the distribution wire drop-in wire by means such as taping not only complicates the work, but also has a problem that if the taping becomes loose, the excess length portion will drop unnecessarily. Was. Therefore, the present invention has been made to solve the above-mentioned problems, and has a simple structure, is easy to mold, can be manufactured at a low cost, and can easily and efficiently construct without requiring the permission of a customer. It is another object of the present invention to provide an extra-length storage case for an optical cable in which an extra-length portion can be firmly held and fixed.

[0004]

In order to achieve the above object, an extra length storage case for an optical cable according to the present invention is formed of a synthetic resin material, and has an insertion portion through which a lead wire for a distribution line is inserted, and a lead wire for the distribution line. A storage portion for storing the extra length of the optical cable attached to the storage device while being wound and held,
.

[0005] A pair of case bodies which are openably and closably polymerized by a synthetic resin material are provided. An insertion portion for inserting a lead wire for a distribution line into a desired position of the pair of case bodies, An accommodating portion for accommodating a take-up reel capable of winding and holding an extra length of an optical cable attached thereto,
May be provided.

[0006] Further, an openable and closable insertion portion formed of a synthetic resin material and through which a lead wire for a distribution line is inserted, and a winding portion capable of winding and holding an extra length of an optical cable attached to the lead wire for a distribution line. A configuration including an openable and closable storage unit for storing the reel may be employed.

[0007]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exploded perspective view of an optical cable extra length storage case according to the present invention.
Each of the extra-length storage cases of the optical cable of each embodiment is formed of a synthetic resin material, for example, polyethylene.
1 to 5 show an extra-length storage case A1 for an optical cable according to the first embodiment, FIG. 1 is a perspective view of the extra-length storage case for an optical cable, FIG. 2 is a perspective view of the opened state, and FIG.
3A is a cross-sectional view taken along line WW of FIG. 1, and FIG.
-It is an X-ray sectional view.

The extra length storage case A1 for the optical cable is
It consists of a pair of case bodies 1a and 1b having substantially the same shape, and the case bodies 1a and 1b are connected by an upper hinge portion 2 and are openably and closably overlapped. The overlapped surfaces are formed with recessed space portions K inside each other, and a cylindrical insertion portion 3 which is communicated with the space portions K and through which a lead wire H for a distribution line described later is inserted is provided at both left and right ends. Further, a circular storage portion 4 which is communicated with the space portion K and further depressed is formed inside one of the case main bodies 1a. The storage section 4 is for winding and storing an extra length f of an optical cable described later, and is selected within a range (for example, about 100 mm) in which an optical cable having a curved inner diameter is not damaged. On the inner surface of the bottom wall 5 of the storage section 4, a holding section 6 for holding an optical cable wound at a position facing the upper and lower sides of the inner peripheral edge is projected.
Each holding portion 6 is provided with a slit 7 at the upper end and a holding hole 8 connected thereto. Each case body 1
a, 1b, polymer pieces 9a,
An engagement piece 10 and an engagement hole 11 are provided at an opposing position of the overlapping pieces 9a and 9b so as to be detachably engageable with each other.

The extra length storage case A1 of the optical cable according to the first embodiment has the above-described configuration, and a method of using the same will now be described. In FIG. 4, H denotes a drop wire for a distribution line, which is drawn into a customer's building via a fastening tool G.
Therefore, the extra length f of the drop wire F of the optical cable attached to the drop wire H for the distribution line is wound in a circular shape within a range accommodated in the storage portion 4, and the extra length storage case A1 for the optical cable.
Is inserted into the storage part 4 with the slits 7 open.
The extra length f is pushed into and held in each holding hole 8 via. Then, the base end side is pulled out from one of the insertion sections 3. In this state, the extra length storage case A1 for this optical cable
Is placed over the distribution line drop-in line H from above, the distribution line drop-in line H is inserted into the insertion section 3 on both sides, the overlapping pieces 9a and 9b are aligned, and the engagement piece 10 is engaged with the engagement hole 11 to make the two cases. The main bodies 1a and 1b are polymerized. As a result, as shown in FIG. 5, the extra length storage case A1 for the optical cable is attached to the distribution line drop-in line H, and the extra length f of the optical cable is held. In this way, since only the distribution line drop-in wire H is inserted and overlapped, the extra length storage case A for the optical cable is used.
The mounting operation of the optical cable 1 is extremely simple, and the extra length f of the optical cable is securely held in the storage section 4. Also,
Similarly, the extra length storage case A1 for the optical cable can be attached near the branch of the trunk line.

FIG. 6 shows an extra length storage case A2 for an optical cable according to the second embodiment. A pair of case bodies 1a and 1b are provided with a hinge portion 2 at an upper end edge. The insertion part 3 through which the distribution line drop-in wire H is inserted is provided along the lower side, and a storage part 4 is provided below the insertion part 3 for storing the extra length f of the optical cable. Polymerization pieces 9a and 9b that overlap each other are extended below the storage section 4, and engagement pieces 10 and engagement recesses 12 that engage with each other are provided on their lower edges, and a set of case bodies 1a and 1b is formed. It is designed to open and close freely. Although not shown, the extra-length storage case A2 for the optical cable can be easily attached in the same manner as in the first embodiment.

FIGS. 7 to 13 relate to an extra length storage case A3 of an optical cable according to a third embodiment. The extra length storage case A3 of the optical cable has a cylindrical shape into which a lead wire H for a distribution line is inserted. An insertion section 13 and a circular storage section 14 for storing a take-up reel 25 to be described later, which can wind and hold the extra length f of the optical cable, are provided. The insertion portion 13 includes a pair of front and rear half-mounting cylinders 13 a and 13 b connected by a hinge 15 at an upper end edge.
a and 13b are polymerized so that they can be opened and closed freely. An insertion portion 13 having both ends opened along the hinge portion 15 is provided, and a branch tube portion 16 which is connected to the insertion portion 13 in a branch shape and is open at the lower end is provided below the insertion portion 13. Also,
At the lower end edges of the insertion portion 13 and the branch tube portion 16, overlapping pieces 17a and 17b that can overlap each other are extended, and each of the overlapping pieces 1
An engagement piece 18 and an engagement hole 19 are provided at the positions 7a and 17b so as to be opposed to each other and engage with each other in a detachable manner.

The storage section 14 is provided with a hinge section 20 at the lower edge.
And a pair of semi-mounting bowls 14a and 14b, which are connected to each other at the front and rear sides, and these semi-mounting bowls 14a and 14b are overlapped so as to be openable and closable in a direction opposite to the pair of semi-mounting cylinders 13a and 13b.
Then, the one half-mounting bowl 14b is connected to the one polymer piece 17.
b is integrally connected to the lower edge of the other half-mounted bowl 14
A handle 21 is protruded at a position opposing the hinge portion 20 at a, and an engaging piece 22 is protruded from the handle 21 so that the handle 21 can be freely engaged and disengaged with an engaging hole 23 formed at the overlapping piece 17b. Is adapted to be engaged. Further, on one side of the outer peripheral wall of the storage section 14, a drop-in hole 2 into which the extra length f of the optical cable is drawn so as to straddle the overlapping surface of the two half-mounting bowls 14a, 14b.
4 have been established. 14c is one half-mounting bowl 14b
Are provided at the center of the bottom surface of the base member, and are support projections that support the take-up reel 25 by fitting a shaft support tube 30 described later.

The take-up reel 25 is formed of a transparent synthetic resin material, and as shown in FIG. 11, a reel body 26 accommodating an extra length f of the optical cable, and is fitted to the reel body 26 and rotated to rotate. A reel rotating body 27 that winds the extra length f;
An opening / closing lid 28 is supported by the reel rotating body 27 so as to be openable and closable. The reel body 26 has a short cylindrical shape in which one side surface is opened and the other side surface is closed as a bottom wall 26a, and a shaft support tube 30 having both ends opened in the center of the inner surface of the bottom wall 26a. An annular concave portion 31 is formed on the bottom wall 26a on the outer periphery of the shaft support 30. Further, a first opening 32 through which the extra length f of the optical cable is inserted is formed on one side of the outer peripheral side wall 26b.

The reel rotating body 27 has an opening 3 on one side.
And a cylindrical portion 27a having a short cylindrical shape, the other side of which is closed as a bottom wall 27b.
A flange portion 34 is provided around and in contact with the nine peripheral edges. In addition, as shown in FIG. 12, a support cylinder 35 into which the shaft support cylinder 30 can fit is protruded from the center of the bottom wall 27b,
When the flange portion 34 is aligned with the peripheral edge of the opening 29 of the reel body 26, the shaft support 30 is fitted into the support tube 35, and the bottom wall 27b of the barrel portion 27a is connected to the bottom wall of the reel body 26. A plurality of sliding projections 36 that fit into the recessed portion 31 formed in the cylindrical portion 26a and protrude from the outer surface of the bottom wall 27b of the barrel portion 27a come into contact. This is to reduce frictional resistance when the reel rotating body 27 rotates. The flange portion 34 is provided with cutout recesses 37 at opposing positions, a bearing portion 38 is provided on the lower surface of one of the cutout recesses 37, and the other cutout recess 37 is formed in the cylindrical portion 27a. It communicates with the two openings 39.
A holding portion 40 is provided near the second opening 39 and inside the barrel portion 27a for inserting and holding the tip of the extra length f of the optical cable.

The opening / closing lid 28 has a disk shape sized to fit into an annular concave portion 41 formed on the outer periphery of an opening 33 of the barrel portion 27a, and one side of the opening / closing lid 28 matches the bearing portion 38. A shaft support portion 43 is provided which is supported by being inserted through the shaft pins 42 on both sides, so that the shaft support portion 43 can be rotated around the shaft support portion 43 and can be fitted to the opening 33 of the barrel portion 27a so as to be freely opened and closed. I have. On the other side facing the shaft support portion 43, as shown in FIG.
Is extended, and an outer peripheral side wall 26 of the reel body 26 is provided on a lower surface thereof.
A guide piece 44a located inside b is protruded.
In addition, near the protruding piece 44, on the back side of the opening / closing lid 28, when fitted into the annular concave portion 41, it is fitted into the holding portion 40 so that the tip of the extra length f of the optical cable is not pulled out. An insertion piece 46 protrudes. Reference numeral 47 denotes a handle which is gripped with a fingertip to open and close the opening / closing lid 47 or rotate the reel rotating body 27. Reference numeral 45 denotes a stopper plug that is fitted to the shaft support tube 30 in a state where the shaft support tube 30 is fitted in the support tube 35 and prevents the reel rotating body 27 from falling off.

The extra length storage case A3 for an optical cable according to the third embodiment has the above-described configuration. Next, a method of using the same will be described. First, a pair of half-mounting cylinders 13a and 13b is opened in advance, and a distribution line lead wire H is interposed therebetween, and the pair of half-mounting cylinders 13a and 13b is closed again to remove the extra length storage case A3 for the optical cable. Attach to drop wire H for distribution line. The pair of front and rear half-mounted bowls 14a and 14b are opened.

Next, the take-up reel 25,
The shaft pin 42 is inserted into the notch recess 37 so as to match the bearing 38. Thus, the opening / closing lid 28 is attached to the reel rotating body 27 so as to be freely opened and closed. Then, the barrel portion 27a is inserted into the reel body 26 through the opening 29 while the reel rotating body 27 is fitted into the support cylinder 35 with the shaft support cylinder 30, and the flange portion 34 abuts on the outer peripheral edge of the outer peripheral side wall 26b. . Further, a stopper plug 45 is fitted to the shaft support 30. As a result, the reel rotating body 27 is
Will rotate freely around. Next, with the opening / closing lid 28 opened and the first opening 32 and the second opening 39 aligned and in communication with each other, the drop-in wire F of the optical cable attached to the drop-in wire H for the distribution line from outside the take-up reel 25.
Is pulled into the barrel portion 27a through the first opening 32 and the second opening 39, and the leading end portion is inserted into the holding portion 40.
Into Then, the opening / closing lid 28 is closed. As a result, the insertion piece 46 is fitted into the holding portion 40, and the distal end of the extra length portion f is held irremovably. In this state, the handle 47
Is sandwiched between fingers, and the reel rotating body 27 is rotated to wind up the extra length f on the outer peripheral surface of the barrel 27a. As shown in FIGS. 13A and 13B, the take-up reel 25 on which the extra length f has been wound in this manner is housed in the housing portion 14, and the other half-mounting bowl 14a
Put on. At this time, the extra length f pulled out from the take-up reel 25 is drawn out of the drawing hole 24 of the storage unit 14 to the outside.

As a result, as shown in FIGS. 13 (c) and 14, the extra length storage case A3 for the optical cable is attached to the distribution line drop-in wire H, and the extra length f of the optical cable is held. In this way, the winding reel 25 having the extra length f wound thereon is housed in the storage section 14 after the distribution line drop-in wire H is inserted, so that it is easy to handle. Therefore, also in this case, the operation of attaching the extra length storage case A3 for the optical cable is extremely simple, and the extra length f of the optical cable is firmly held in the storage portion 14 and further in the take-up reel 25. Similarly, the extra-length storage case A3 for the optical cable can be attached near the branch of the trunk line.

FIGS. 15 to 18 relate to an extra-length storage case A4 for an optical cable according to the fourth embodiment. The extra-length storage case A4 for the optical cable has a cylindrical shape through which the lead-in wire H for a distribution line is inserted. And a circular storage section 49 for storing the take-up reel 25 capable of winding and holding the extra length f of the optical cable. The insertion portions 48 are provided on the same axis on both sides of an outer surface of a storage portion 49, that is, a body portion 50 described later, and each of the insertion portions 48 is a pair of front and rear portions connected by a hinge portion 52 at an upper edge thereof. The half-mounting cylinders 48a and 48b
8a and 48b are polymerized so that they can be opened and closed freely. Further, on the lower side, there is provided a branch tube portion 53 which communicates with the insertion portion 48 and is divided into a branch shape and has an open lower end. The lower end between the insertion portion 48 and the insertion portion 48 and the branch tube portion 53 is provided. At the edges, overlapping pieces 54a and 54b that can be overlapped with each other are extended, and an engaging piece 55 and an engaging hole 56 are provided at positions facing the respective overlapping pieces 54a and 54b so as to be detachably engageable with each other. ing.

The housing 49 is provided with a hinge 57 at the lower edge.
The main body 50 and the lid 51 are connected to each other, and have a size that can accommodate the take-up reel 25. The engaging piece 5 is located at a position facing the hinge 52 of the lid 51.
8 are provided, and correspondingly, the main body 50 is provided with an engagement hole 5.
9 have been established. Reference numeral 60 denotes a drop-in hole which is opened on one side of the outer peripheral wall of the storage portion 49 and into which the extra length f of the optical cable is drawn. Reference numeral 61 denotes a support protrusion protruding from the center of the bottom wall of the main body 50 to support the take-up reel 25.

FIGS. 16 to 18 show an optical cable extra length storage case A4 according to the fourth embodiment.
As shown in FIG. 6, a pair of front and rear half-mounting cylinders 48a,
48b is opened, the distribution line drop-in line H is interposed therebetween, and the pair of half-mounting cylinders 48a and 48b are closed again to attach the extra length storage case A4 of the optical cable to the distribution line drop-in line H. Then, the take-up reel 25 having the extra length f wound thereon is accommodated in the accommodating portion 49 by fitting the shaft support 30 to the support projection 61 in the same manner as described above, and the lid 51 is closed to engage the engagement piece 58. Is engaged with the engagement hole 59. At this time, the excess length f pulled out from the take-up reel 25 is drawn out of the drawing hole 60 of the storage unit 14 to the outside.

As a result, similarly to the third embodiment, the extra length storage case A4 for the optical cable is attached to the distribution line drop-in wire H, and the extra length f of the optical cable is held. In this manner, the winding reel 25 having the extra length f wound thereon is housed in the storage portion 49 after the distribution line drop-in wire H is inserted thereinto, so that it is easy to handle. Therefore, also in this case, the operation of attaching the extra-length storage case A4 for the optical cable is extremely simple, and the extra-length portion f of the optical cable is firmly held in the storage portion 49 and further in the take-up reel 25. Similarly, the extra length storage case A4 for the optical cable can be attached near the branch of the trunk line.

[0023]

As described above, the extra length storage case of the optical cable according to the present invention is formed of a synthetic resin material, and winds and holds the insertion portion for inserting the lead wire for the distribution line and the extra length portion of the optical cable. Since it has a simple configuration including a storage portion for storing in a state, it is easy to mold and the manufacturing cost can be reduced. In addition, even when installing a drop wire, it can be installed efficiently without requiring the permission of the customer and can be easily installed on the drop wire for distribution lines, etc. There is an effect that the long part is firmly held and fixed.

[Brief description of the drawings]

FIG. 1 is a perspective view of an extra-length storage case for an optical cable according to a first embodiment of the present invention.

FIG. 2 is a perspective view of the opened state.

3A is a sectional view taken along line WW of FIG. 1, and FIG.
-Y sectional drawing.

FIG. 4 is a perspective view showing the attached state.

FIG. 5 is a front sectional view showing the attached state.

FIG. 6 is a perspective view of an extra-length storage case for an optical cable according to the second embodiment.

FIG. 7 is a perspective view of an extra-length storage case for an optical cable according to the third embodiment.

FIG. 8 is an exploded perspective view of the opened state.

FIG. 9 is a front sectional view of the same.

FIG. 10 is a sectional view taken along line YY of FIG. 9;

FIG. 11 is an exploded perspective view of the take-up reel.

FIG. 12 is a front sectional view of the take-up reel.

FIG. 13 is a perspective view showing the attachment procedure.

FIG. 14 is a front sectional view showing the attached state.

FIG. 15 is a perspective view of an extra-length storage case for an optical cable according to the fourth embodiment.

FIG. 16 is an exploded perspective view of the same.

FIG. 17 is a front sectional view of the same.

FIG. 18 is a sectional view taken along line ZZ of FIG. 17;

[Explanation of symbols]

 1a, 1b Case main body 3, 13, 48 Insertion section 4, 14, 49 Storage section A1 to A4 Extra length storage case for optical cable f Extra length section H Drop wire for distribution line

Claims (3)

[Claims] 1. An insertion portion formed of a synthetic resin material, through which a lead wire for a distribution line is inserted, and a surplus portion of an optical cable attached to the lead wire for the distribution line, which are wound and held in a housed state. An extra-length storage case for an optical cable, comprising: a storage section. 2. A pair of case bodies formed of a synthetic resin material and polymerized so as to be openable and closable, and an insertion portion for inserting a lead wire for a distribution line into a desired position of the pair of case bodies; A storage section for storing an excess length portion of an optical cable attached to a service drop line, the storage portion being wound and held therein in a state of being retained. 3. An openable and closable insertion portion formed of a synthetic resin material, through which a lead wire for a distribution line is inserted, and a winding member capable of winding and holding an extra length of an optical cable attached to the lead wire for the distribution line. An extra length storage case for an optical cable, comprising: an openable and closable storage portion for storing a reel.