JPH1010337A - Housing case for optical cable connection - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a housing case for an optical fiber connector capable of fixing various cables such as tension member or indoor cable to the housing case without causing secular looseness and capable of easily performing fixing work without using any tool. SOLUTION: By providing a hold part 13 for introducing plural optical cables having a coated optical fiber and a tension member from cable introducing holes 11, 12 and fixing the tension member of the optical cable to the case main body, attachably/detachably fixing an indoor cable hold tool 17 engaging the indoor cable I inserted into a distributive groove 15 connected to the cable introducing holes 11, 12 and oppositely arranged to the hold part 13 to the laying groove 15, and attachably/detachably arranging a coated optical fiber housing part provided with a coated optical fiber winding part winding the cable around the fixed case and a connector hold part for connecting the coated optical fiber, various cables are sharing held in the fixed state, and also its fixing work is enabled by easy work without using any tool.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical cable connection storage case used for connecting a tension member and an optical cable having an optical fiber core, more specifically, an optical cable including a tension member in a case body, an indoor cable having no tension member, The present invention relates to an optical cable connection storage case that holds each cable such as an air cable in a fixed state.

[0002]

2. Description of the Related Art In connecting an optical fiber core wire and an optical cable having a tension member, it is essential to fasten the tension member. For this reason, conventionally, a screw hole has been formed in the optical cable connection storage case, and the end of the tension member is wound around a screw member screwed into the screw hole and fastened using a tool.

[0003]

However, in the conventional optical cable connection storage case, there is a problem that the screw member is easily loosened over time, and the tension member and the cable may be detached. It is thought that this problem can be solved by providing a member such as a lock nut, or by periodically retightening the screw member. However, in the former case, not only the structure becomes complicated, but also the tension member and A new problem arises in that the fixing work of the cable becomes complicated, and in the latter case, a new problem arises in that an enormous amount of inspection man-hours for the optical cable connection storage case are required. SUMMARY OF THE INVENTION The present invention is intended to eliminate the conventional disadvantages, and can fix an optical cable, a tension member, an indoor cable, an air blown cable, etc. without loosening over time, and can easily perform the fixing work. It is an object of the present invention to provide an optical cable connection storage case which can be easily handled by using each cable in combination.

[0004]

According to the present invention, a cover case is detachably assembled to a fixed case to form a case body having a cable routing hole formed therein, and light is transmitted from the cable routing hole into the case body. A plurality of optical cables each having a fiber core and a tension member are introduced, and the tension member of the optical cable is fixed to a holding portion of the case body to connect the optical fiber cores to each other. An indoor cable gripper for engaging an indoor cable inserted into a wiring groove that is connected to the holding portion and that is connected to the wiring hole is detachably fastened to the wiring groove, and is attached to the fixed case. A core wire storage portion including a core wire winding portion around which a cable is wound and a connector holding portion for connecting the core wire is detachably provided.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An optical cable connection storage case according to the present invention is characterized in that a fastening member is inserted into a fastening hole of a tension member holding portion provided in a fixed case and an insertion hole and an insertion slit of the fastening member. When the tension member of the optical cable is inserted into the continuous insertion hole and the insertion slit, and the fastening member is rotated to the fastening position by operating the operation unit, the tension member is locked with the fastening hole. It is pinched and fixed between the attachment members. Then, the optical cable is connected by a connector, and the extra long core wire is wound around the core wire storage portion, and the core wire storage portion holding the connector is fitted into the fixed case. In this case, an SC connector, a single-core MT connector, or a core wire storage portion having a connector holding portion that can be housed alone or in combination with a mechanical splice is selected and fitted. In the case of the indoor cable, the cable can be fastened by a simple operation of merely passing the cable through the routing groove provided opposite to the holding portion and inserting the cable gripping tool, and one-touch gripping of the cable is possible. After that, when the lid case is assembled, the holding portion formed on the case engages with the operation lever or the cable gripper of the fastening member, and the rotation of the fastening member is prohibited, that is, the fastening member stops the tension member. The cable is held at the fixed position and the cable gripper is prevented from coming off, so that the tension member and the indoor cable can be securely prevented from coming off. If there is no SC connector or mechanical splice inside the fixed case, remove the core wire storage section from the fixed case and use the air blown pipe to bend or wind it into the fixed case and store it in the air blown pipe. The stopper provided abuts and is fixed to the wiring hole, and the lid case is assembled so that the air blown cable can be securely stored without coming off.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS.
Referring to FIG. 3, as shown in FIG. 13, a branch optical cable C branched from an overhead closure B provided in a trunk optical cable A is introduced into an optical cable connection storage case 1 according to the present invention, and The incoming optical cable E is branched and routed from the storage case 1 into the building D. The storage case 1 for connecting an optical cable can also be used as an optical outlet, and when used as an optical outlet, it can be configured as either a wall embedded type or an external wall type. Is used by connecting to the ONU 2 with a termination cable G routed inside the building D via an optical outlet F installed inside the building D.

As shown in FIGS. 1 to 5, an optical cable connection storage case 1 (hereinafter simply referred to as a storage case) has a fixed case 10 attached to an outer wall of a building D, and a lid for covering the fixed case 10. It has a case 50, which is assembled to form a case body. Fixed case 1
No. 0 is formed by injection molding of resin or the like to form cable introduction holes 11 and 12 for the cable introduction holes 1 and 12.
A plurality of optical cables each having an optical fiber core wire and a tension member are introduced from 1 and 12, and a holding portion 13 for fixing the tension member of the optical cable to the case body is provided in the fixed case 10. Fastening hole 1
6 and the insertion slit 1 opening on the peripheral surface of the fastening hole 16
9 is formed, and a fastening member 14 having an insertion hole 7 connected to the insertion slit 13 is rotatably fitted in the fastening hole 7. The fastening member 14, the gripping lever 9 with a locking convex portion 9 ₁ located at one end, with a fastening member 14 insertion hole 7 penetrating the middle portion 8 in the radial direction is formed, said tension member Is inserted into the insertion hole 7 of the fastening member 14 via the insertion slit 19 and the fastening hole 16, and the fastening member 14 is rotated to be fastened.

[0010] A routing groove 15 connected to the cable routing holes 11 and 12 and opposed to the holding portion 13 is detachably secured to the routing groove 15.
And the indoor cable gripper 17 for locking the
An indoor cable I inserted into the cable 5 is fixed. The holding portion 13 having a fastening hole 16 for fastening the tension member is provided facing the routing groove 15,
It is preferable that the indoor cable I be clamped by the indoor cable grip 17 on the outer peripheral wall surface of the holding portion 13 facing the wiring groove 15.

The indoor cable gripper 17 is a member having an E-shaped cross section made of a synthetic resin such as polypropylene resin and is fitted into the wiring groove 15 by the guide grooves 18 on both sides. One having a claw portion 21 to be locked by a locking portion 20 provided on a wall surface forming the groove 15 and contact protrusions 22 and 22 for pressing a cable is used to fasten a cable with one touch without a tool. When the lid case 50 is assembled, the lid case 50
Is designed so that the contact member provided on the contact member comes into contact with the contact member to form a detachment prevention mechanism. (FIGS. 1 and 2)

The fixed case 10 is removably fitted with a core wire storage section 30 in which a cable winding section 31 and a connector housing section 32 are defined. An SC connector accommodating section 32 for accommodating a connector for connecting a core wire, which is composed of an annular wall for taking up the wire and a holding piece 33, is provided on both sides. Wire storage unit 30
The fitting and locking portions 34 and 35 are formed so as to correspond to the side wall of the fixed case 10 and the core wire storing portion wall. (FIGS. 3 and 4) In this case, the core wire storage unit 30 is a case in which an annular wall is erected on the bottom plate around and at the center, and an SC connector, a single core MT connector, or a mechanical splice is used alone or in combination. One having a connector holding portion that can be accommodated is selected and used. For example, in this embodiment, two SC connectors and four single-core MT connectors are housed (two single-core MT connectors are divided into left and right sides and stacked in two stages). 2 connectors or 2 single-core MT connectors or 2 mechanical splices
) Can be used independently.

The SC connector housing 32 is provided on both sides, and a single-core MT connector housing 36 is provided via a partition wall 40.
Are provided next to each other, and a cable winding portion 31 is formed further inside.
1 and 42 are provided, respectively, and a connector is easily inserted by inserting a push rod or the like. (FIGS. 5 and 6)

As shown in detail in FIGS. 7 to 9, the fastening member 14 is rotatably fitted in a fastening hole 16, and the fastening hole 16 has a groove above and below a front opening portion. An insertion slit 19 in the shape of an opening opens. The insertion slit 19 is continuous with the fastening hole 16, and the intermediate portion 8 of the fastening member 14 fitted into this portion.
Is connected to the insertion hole 7, and a tension member of an optical cable is inserted into the insertion slit 19 and the insertion hole 7.

The wiring groove 15 is a groove having a predetermined depth opened on the front surface side, and is a wiring hole for introducing a cable.
To go up and down. Either an optical cable or an indoor cable is routed in the routing groove 15, and the optical cable has a notch 37 through which the optical fiber core wire passes through the routing groove 15.
From the cable winding portion 31 and the connector housing portion 32, and the tension member is inserted into the insertion slit 19 from the wiring groove 15 and fastened in the fastening hole 16 of the holding portion 13 by the fastening member 14. Is done. Further, in the case of the indoor cable I, it may be inserted from the routing groove 15 and pressed against the outer periphery of the holding portion 13 with the indoor cable holding tool 17 to be clamped. (FIG. 7)

The fixed case 10 is provided with a fitting / locking portion to which the lid case 50 is attached, and a locking portion of a fitting hole to be fitted with the fitting / locking portion is provided on the lid case 50 side. It is preferable that a cover portion 50 be provided with a contact portion or a hook portion that comes into contact with the grip lever 9 and the cable grip member 17 so as to perform a locking function.

The core storage section 30 has a winding section 31 for winding the cable core section defined in a central portion, and a plurality of projections for partitioning the connector storage section 32 on both left and right sides, respectively. Each of the cable winding portions 31 is integrally formed with a cable pressing piece 33 that extends radially toward the cable introduction portion at the distal end. These cable holding pieces 33
Holds down the optical cable wound around the winding section 31 and holds it. An SC connector 3 is accommodated in the connector accommodating portion 32, and an optical fiber core is connected by the SC connector 3.

Reference numeral 25 denotes a mounting hole formed in the fixed case 10, and the fixed case 10 is fixed to an outer wall of the building D by screws or screws passing through the mounting hole 25.

The fastening member 14 is, as shown in FIG.
A rod-shaped member having large-diameter portions 6 and 6 at both ends and a small-diameter intermediate portion 8 between the large-diameter portions 6 and 6 is provided. Instead, it is inserted freely. The fastening member 14 is formed with a gripping lever 9 for operation on one end surface of the large-diameter portion 6, and the intermediate portion 8.
Is formed with an insertion hole 7 that opens to the peripheral surface. The fastening member 14 is inserted into the insertion hole 7 so that the insertion hole 7 is connected to the insertion slit 19, and the end of the tension member is inserted into the insertion hole 7. The tension member is engaged with the convex and concave portions 9 ₁ and 9 ₂ (hereinafter, referred to as a fixing position) to fix and hold the tension member.

In the optical cable connection storage case 1 according to this embodiment, when connecting the branch optical cable C and the drop-in optical cable E, first, the fixing case 10 is fixed to the outer wall surface of the building D using screws or the like. Then, the branch optical cable C and the drop-in optical cable E are respectively passed through the routing grooves 15, for example, the branch optical cable C is passed through the one routing hole 11, and the optical cable E is passed through the other routing hole 12. Then, the optical fiber core of each optical cable is led to the cable winding / connecting part and connected by the connector 3, and the extra length is used as the core storage part 30.
And hold it.

The tension member of each optical cable is guided to the fixing hole 16 through the insertion slit 19 and is fixed by the fixing member 14. That is, first, the fastening member 14
Is positioned at a position where the insertion hole 7 is continuous with the insertion slit 19, and then the end of the tension member is inserted from the insertion slit 19 into the insertion hole 7. Next, the holding member 9 is rotated by the gripping lever 9 to hold the end of the tension member between the fastening member 14 and the inner peripheral surface of the fastening hole 16.
Further, the indoor cable I is inserted from the routing groove 15, the cable gripping tool 17 is fitted into the routing groove 15, pressed, and clamped by the holding portion 13.

After that, the core wire storage portion 30 of the fixed case 10
Is covered with the lid case 50 and the lid case 50 is attached to the fixed case 10. In this case, the cover case 50 is locked by the abutment such as the holding projection on the inner surface abutting against the fastening member 14 and the cable gripping member 17 of the fixed case 10 to prevent the cover case 50 from moving. Therefore, the fastening member 14 and the cable gripper 1
7 prevents the tension member or the cable fixed thereto from becoming loose. In this embodiment, a gripping lever 9 extending radially to a large diameter portion 6 of a fastening member
Are integrally formed so that they can be manually operated. And fixed case 1
0, a lever accommodating portion such as a concave portion for accommodating the grip lever 9 at the fastening position of the fastening member 14 is formed.
A holding portion for pressing and fitting or holding the grip lever 9 located in the lever accommodating portion in the cover state is formed on the inner surface of the cover 0, and the grip lever 9 can be manually operated without using a tool such as a driver. Cable connection work is easy. Further, in each of the above-described embodiments, the stopper member 50 is attached to the fixed case 10 to prevent the fastening member 14 from rotating and to be held down (to prevent the lifting), but the lid case 50 only prevents the lifting. It is also possible. In this case, a detent part having a deformed cross section such as a square is formed at the end of the fixing member 14, and the detent part having the same shape that the detent part can be fitted to the bottom surface of the fixing hole 16 of the fixed case 10. Forming a detent hole, the fixing member 14
After inserting the tension member into the insertion hole 7 with the end surface of the detent portion riding over the opening edge of the detent portion, the detent portion is inserted in a state where the phase is different from that of the detent hole.
The fastening member 14 may be rotated by a predetermined angle so that the detent portion fits into the detent hole, and the fastening member 14 may be prevented from floating on the inner surface of the attached lid case 50.

In the specific examples shown in FIGS. 10 to 12, the cord storage section 30 has the connector storage section 3 capable of storing the SC connector 3.
2 is provided in the fixed case 10 in a detachable manner. When a core wire connection part is required, the core wire storage part 30 is fixed and used, and there is no connection member such as an SC connector or a mechanical splice. In case, fixed case 10
The core storage unit 30 is detached from the device and used. (See Fig. 11)

That is, when the air blown cable J is used, the air blown pipe 38 is used to wind the inside of the fixed case, or the air blown into a U-shape to turn the blown pipe stopper 4.
The pipes are fixed to the wiring holes 11 and 12 at 3 and the lid case 50
Can be effectively stored and used so that the air blown cable J does not come off. In addition, the core wire storage part 3
Reference numeral 0 is not limited to the SC connector 3, but may be replaced with a type capable of storing and holding a casksh connector.

[0023]

According to the present invention, there is provided an optical cable connecting storage case for connecting a tension member of an optical cable to a holding portion of a case body and connecting optical fiber core wires to each other, wherein the holding portion is connected to the cable routing hole. A core winding portion for detachably fixing an indoor cable gripper for locking an indoor cable inserted into a routing groove provided opposite to the routing groove, and winding a cable around the fixed case; The detachable core storage section with a connector holding part for core connection allows various cables to be held in a fixed state, and the fixing work can be stopped by a tool-less easy operation. In addition to being able to attach, indoor cables and air blown cables can be easily operated with one touch, and workability can be greatly improved without tools, and connector plugs and adapters after core connection A also simple and inexpensive form storage also allows easy and secure cable gripping arrangement connection is a possible fixing of the connecting member to aggregate the centralized storage unit,
In addition, the tension member or the indoor cable can be securely fixed, and the effect of preventing loosening over time can be effectively obtained. In addition, the conventional disadvantages are eliminated, and tension members, indoor cables, air blown cables, etc. can be fixed without loosening over time, and the fixing work can be easily performed. An easy optical cable connection storage case can be provided.

[Brief description of the drawings]

FIG. 1 is a view showing an embodiment of an optical cable connection storage case according to one embodiment of the present invention, from which a lid case is removed.
(A) is a front view, (b) is a side view, and (c) is a plan view.

FIGS. 2A and 2B show a cable gripper used in the optical cable connection storage case of the example of FIG. 1, and FIG.
(B) is a plan view, (c) is a side view, and (d) is a perspective view in a used state.

FIG. 3 is a perspective view of a use state of the example of FIG. 1;

FIG. 4 is a front view of a separated state using the example of FIG. 1;

FIGS. 5A and 5B are enlarged explanatory views of a part of the cord storage section, wherein FIG. 5A is a front view and FIG. 5B is a longitudinal sectional view taken along line AA.

FIGS. 6A and 6B are enlarged views of the cord storage section, wherein FIG. 6A is a partially cut-away side view, FIG. 6B is a rear view, and FIG.

FIG. 7 is a detailed perspective view of a part of the example of FIG. 3;

8A and 8B show details of a tension member holding unit, and FIG.
4 is an enlarged vertical sectional view taken along line BB of FIG. 4, and FIG.

9A and 9B show a fastening member used in the optical cable connection storage case, wherein FIG. 9A is a side view and FIG. 9B is a front view.

FIG. 10 shows a core wire storage part according to another embodiment of the present invention,
(A) is a front view, (b) is a partially cut side view, (c)
Is a partially cut plan view.

FIG. 11 is a perspective view of the example of FIG. 10 in a use separated state.

FIG. 12 is a perspective view of the example of FIG. 10 in one use state.

FIG. 13 is a schematic diagram of an optical cable routing mode showing a use state of the present invention.

[Explanation of symbols]

 C Branch optical cable E Lead-in optical cable 1 Optical cable connection storage case 7 Insertion hole 8 Intermediate part 9 Grasping lever 10 Fixed case 11, 12 Routing hole 13 Holding portion 14 Fastening member 15 Routing groove 16 Fastening hole 17 Cable gripping tool DESCRIPTION OF SYMBOLS 18 Guide groove 19 Insertion slit 20 Locking part 21 Claw part 22 Contact convex part 30 Core wire storage part 31 Cable winding part 32 SC connector storage part 34, 35 Fitting locking part 36 Single core MT connector storage part 38 Airblon pipe 40 Partition wall 41, 42 Connector protruding hole 50 Lid case

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Ichiro Tanaka 4-35-3 Yoyogi, Shibuya-ku, Tokyo Inside Japan Recomm Inc. (72) Inventor Kimio Ando 3-19-2 Nishishinjuku, Shinjuku-ku, Tokyo Nippon Telegraph and Telephone Telephone Co., Ltd. (72) Inventor Kenichi Nakazawa 3-19-2 Nishi-Shinjuku, Shinjuku-ku, Tokyo Nippon Telegraph and Telephone Corporation (72) Inventor Sadaaki Takano 3-19-2 Nishi-Shinjuku, Shinjuku-ku, Tokyo Nippon Telegraph and Telephone Stock In company

Claims (5)

[Claims] A cover case is detachably assembled to a fixed case to form a case body having a cable routing hole formed therein, and the case body has an optical fiber core wire and a tension member from the cable routing hole. In an optical cable connection storage case for introducing a plurality of optical cables, fixing a tension member of the optical cable to a holding portion of a case body, and connecting optical fiber core wires to each other, the holding portion is connected to the cable routing hole. A core winding portion for detachably fixing an indoor cable gripper for locking an indoor cable inserted into a routing groove provided opposite to the routing groove, and winding a cable around the fixed case; A storage case for connecting an optical cable, wherein a storage portion for storing a core having a connector holding portion for connecting a core is detachably provided. 2. The indoor cable gripper is a member having an E-shaped cross section made of a synthetic resin, which is fitted into the wiring groove by guide grooves on both sides, and is provided on a wall surface forming the wiring groove. The optical cable connection storage case according to claim 1, further comprising a claw portion locked by the locking portion, and a contact convex portion pressing the cable. 3. An SC connector, a single-core MT connector, wherein the core wire storage portion has an annular wall erected at the periphery and a central portion and can be fitted by a fitting locking portion corresponding to a fixed case. 3. The optical cable connection storage case according to claim 1, wherein a connector holding portion capable of housing a single or a combination of mechanical splices is formed. 4. The fixing case, wherein a holding portion having a fixing hole communicating with an insertion slit for fixing a tension member is provided to face a wiring groove, and the fixing case is provided on an outer peripheral wall surface of the holding portion facing the wiring groove. 4. The optical cable connection storage case according to claim 1, wherein each of the indoor cables can be held by an indoor cable gripper. 5. The fixing case includes a holding portion having a fixing hole and an insertion slit communicating with the fixing hole, and the fixing member having the insertion hole connected to the insertion slit is fixed to the fixing member. 5. The optical cable connection storage case according to claim 4, wherein the storage case is rotatably fitted in the mounting hole.