JPH09288217A - Housing case for connecting optical cable - Google Patents

Abstract

PROBLEM TO BE SOLVED: To fix tension members or indoor cables to a housing case without the occurrence of a slack with lapse of time and to easy carry out fixing work. SOLUTION: This housing case has a holding section 13 for introducing the plural optical cables having coated optical fibers and tension members from cable arranging holes 11, 12 into the housing case and fixing the cables and the members to a housing base body. This holding section 13 is formed with a fixing hole 16 and an insertion slit opened at the peripheral surface of this fixing hole 16 and is so constituted that a fixing member 14 is freely turnably fitted into the fixing hole 16 and the tension members are fixed by turning the fixing member 14. Indoor cable clampers 17 which are formed successively with the cable arranging holes 11, 12 and detain the indoor cables 1 to be inserted into the arranging grooves formed opposite to the holding section 13 are freely attachably and detachably fixed to the arranging grooves so as to fix the indoor cables 1 in the arranging grooves.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a storage case for connecting an optical cable used for connecting an optical cable having a tension member and an optical fiber core, and more particularly to an optical cable including a tension member in a case body or an indoor cable having no tension member. The present invention relates to a storage case for connecting optical cables, which holds each 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. The present invention is intended to eliminate the drawbacks of the related art, and can fix the tension member and the indoor cable without causing loosening over time,
It is another object of the present invention to provide a storage case for connecting an optical cable, which can be easily attached and detached and can be easily handled by using each cable together.

[0004]

SUMMARY OF THE INVENTION According to the present invention, a lid case is detachably assembled to a fixed case to form a case body in which a cable routing hole is formed, and a light is transmitted from the cable routing hole in the case body. An optical cable connecting storage case in which a plurality of optical cables having a fiber core wire and a tension member are introduced, and the tension members of the optical cable are fixed to the case body to connect the optical fiber core wires to each other, the optical cable connection storage case is fixed to the fixed case. The fastening member is formed by forming a fastening hole and an insertion slit that opens on a peripheral surface of the fastening hole, a grip lever at an end portion, and a insertion hole that penetrates in a radial direction at an intermediate portion. A holding portion is rotatably fitted in the hole, the tension member is inserted into the insertion hole through the insertion slit and the fastening hole, and the fastening member is rotated to be fastened. In addition, an indoor cable gripping tool that is connected to the cable routing hole and that locks the indoor cable that is inserted into the routing groove that is provided opposite to the holding portion is detachably fixed to the routing groove. It secures the indoor cable in the groove.

[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. On the other hand, in the case of an indoor cable, the cable can be gripped with a one-touch method by simply inserting the cable through the cable-groove formed opposite to the holding portion and inserting the cable gripping tool. 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.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described below with reference to FIGS.
9, the branched optical cable C branched from the aerial closure B provided in the trunk optical cable A is introduced into the optical cable connection storage case 1 according to the present invention, and the optical cable connection storage is carried out. Case 1
From this, the drop optical cable E is branched and installed toward the inside of 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.
1, 12 are provided with a plurality of optical cables having optical fiber core wires and tension members, and a holding portion 13 for fixing the tension members of the optical cables to the case body is provided. Also, the fastening slit 14 that opens on the peripheral surface of the fastening hole 16 is formed, and the fastening lever 14 is formed with the gripping lever at the end and the insertion hole 7 that penetrates the intermediate portion 8 in the radial direction. The fastening hole 1
6, the tension member is rotatably fitted, the tension member is inserted into the insertion hole 7 through the insertion slit 19 and the fixation hole 16, and the fixation member 14 is rotated to be fixed. It serves as the holding unit 13.

An indoor cable gripping tool 17 which is connected to the cable routing holes 11 and 12 and locks an indoor cable I inserted in a routing groove 15 provided opposite to the holding portion 13 is provided with the indoor cable gripping tool 17. It is configured to be detachably fixed to the groove 15 to fix the indoor cable I in the wiring groove 15. Fastening hole 1 for fastening this tension member
It is preferable that the holding portion 13 having 6 is disposed so as to face the wiring groove 15, and the indoor cable I can be held by the indoor cable gripping tool 17 on the outer peripheral wall surface of the holding portion 13 facing the wiring groove 15, respectively. .

The indoor cable gripping tool 17 is a member having an E-shaped cross section made of polypropylene resin and is fitted into the routing groove 15 by the guide grooves 18, 18 on both sides, and the routing groove 15 is formed. By using the one provided with the claw portion 21 that is locked to the locking portion 20 provided on the wall surface and the contact convex portions 22 and 22 that press the cable, the cable can be fixed with one touch without using a tool. Therefore, when the lid case 50 is assembled, it is considered that the member provided on the lid case 50 comes into contact with the lid case 50 to form a removal preventing mechanism.

Further, the fixed case 10 is detachably fitted with a core wire storage portion 30 in which a cable winding portion 31 and a connecting portion 32 are defined. The cable winding portion 31 winds a cable. A core wire storage unit 30 having a connecting portion 32 for accommodating a connector for core wire connection, which is composed of an annular wall and a pressing piece 33, on both sides, and is formed corresponding to the side wall of the fixed case 10 and the core wire storage unit wall. The fitting and locking portions 34 and 35 described above can be fitted.

As shown in detail in FIGS. 5, 6 and 7, the fastening member 14 is rotatably fitted in a fastening hole 16, and the fastening hole 16 is provided with a strip above and below the front opening. The groove-shaped insertion slit 19 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.
The optical fiber tension member of the 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 that opens on the front surface side, and the wiring holes 11 and 12 for introducing cables are provided.
And vertically cut (see FIGS. 2 to 5). Either an optical cable or an indoor cable is routed in the routing groove 15, and the optical cable has an optical fiber core wire in the routing groove 1
It is guided to the cable winding part 31 and the connection part 32 via 5,
Further, the tension member is inserted into the insertion slit 19 from the wiring groove 15 and fixed by the fixing member 14 in the fixing hole 16. Further, in the case of the indoor cable I, it may be inserted from the wiring groove 15 and pressed against the outer periphery of the holding portion 13 by the indoor cable gripping tool 17 and held. (Fig. 5)

Further, 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 fitted into this is provided on the lid case 50 side. It is preferable that the cover case 50 be provided with a contact portion or a hook portion that abuts the grip lever 9 and the cable grip 17 so as to provide a lock function.

In the core wire storage section 30, a winding section 31 for winding the cable core wire is partitioned in the central portion, and a plurality of projections partitioning the connection sections 32 serving as connector storage sections are formed on both left and right sides. Set up. 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 pressing pieces 33 hold and hold the optical cable wound around the winding section 31. The connector 3 is accommodated in the connector accommodating connection portion 32, and the optical fiber core wire is connected by the connector 3.

Reference numeral 25 is a mounting hole formed in the fixed case 10, and the fixed case 10 is fixed to the 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.
The rod-shaped member has large-diameter portions 41 and 42 at both ends and a small-diameter intermediate portion 8 between the large-diameter portions 6 and 6, and the end surface of the large-diameter portion 6 faces the front side in the fastening hole 16 described above. It is rotatably inserted. A grip lever 9 for operation is formed on one end surface of the large-diameter portion 6 of the fastening member 14, and an insertion hole 7 that opens to the peripheral surface is formed on the intermediate portion 8. The fastening member 14 has the end of the tension member inserted into the insertion hole 7 in a state where the insertion hole 7 is continuous with the insertion slit 19 and is rotated by the gripping lever 9 from this state (hereinafter, referred to as a stop). The tension member is fixedly held.

In the optical cable connecting storage case 1 according to this embodiment, when connecting the branch optical cable C and the drop optical cable E, first, the fixing case 10 is fixed to the outer wall surface of the building D with screws or the like. Then, the branched optical cable C and the drop optical cable E are respectively passed through the routing groove 15, for example, the branched optical cable C is passed through one routing hole 11 and the dropped 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.

Further, the tension member of each optical cable is guided to the fixing hole 16 through the insertion slit 19 and 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.

Thereafter, 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.

[0020]

According to the storage case for connecting an optical cable in accordance with the present invention, the indoor cable which is connected to the cable routing hole and which is inserted into the routing groove formed opposite to the holding portion of the tension member is locked. Since the cable gripper is detachably fixed to the wiring groove and the indoor cable in the wiring groove is fixed, the tension member can be fixed to the holding portion by an easy work of simply inserting and rotating the lever. Also, the indoor cable can be operated with one touch by simply inserting the gripping tool, and the workability can be greatly improved without tools, and the connector plug and the adapter can be connected after the core wire is connected. It can be fixed and integrated into a central storage unit for easy storage, secure and reliable cable gripping, simple structure and low cost, and tension member or India. Cable can be reliably fastening the, effect that over time loosening can also be effectively prevented. In addition, the conventional drawbacks are eliminated, and tension members and indoor cables can be fastened without slackening over time, and fastening work can be performed easily, and optical cables for easy connection by using each cable together A storage case can be provided.

[Brief description of 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.

2A and 2B show a cable gripping tool used in the same optical cable connection storage case, wherein FIG. 2A is a front view thereof, FIG. 2B is a plan view, FIG. 2C is a side view, and FIG. Is.

FIG. 3 is a perspective view of the example of FIG.

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

5 is a detailed perspective view of a portion of the example of FIG.

FIG. 6 shows details of a tension member holding part, (a)
4 is an enlarged vertical sectional view taken along the line AA of FIG. 4, and FIG.

FIG. 7 shows a fastening member used in the same optical cable connection storage case, (a) is a side view thereof, and (b) is a front view thereof.

FIG. 8 shows an enlarged detail of the core wire storage portion of the example of FIG.
(A) is the rear view, (b) is a partially cut side view.

FIG. 9 is a schematic diagram of an optical cable arranging mode showing a usage state of the present invention.

[Explanation of symbols]

 C Branch optical cable E Drop-in optical cable 1 Storage case for connecting optical cable 7 Insertion hole 8 Intermediate part 9 Grip lever 10 Fixed case 11, 12 Installation hole 13 Holding part 14 Fastening member 15 Installation groove 16 Fastening hole 17 Cable gripping tool 18 guide groove 19 insertion slit 20 locking portion 21 claw portion 22 abutting convex portion 30 core wire storage portion 50 lid case

─────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] July 30, 1996

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Fig. 8

[Correction method] Change

[Correction contents]

FIG. 8 shows an enlarged detail of the core wire storage portion of the example of FIG.
(A) is its rear view, (b) is a partially cut side view, (c)
Is a partially cut front view.

 ─────────────────────────────────────────────────── ─── Continued Front Page (72) Inventor Yasuhiko Shinmachi 4-35-3 Yoyogi, Shibuya-ku, Tokyo Inside Japan Recom Co., Ltd.

Claims (4)

[Claims] 1. A case body is constructed by detachably assembling a lid case to a fixed case to form a cable routing hole, and an optical fiber core wire and a tension member are provided in the case body from the cable routing hole. An optical cable connecting storage case in which a plurality of optical cables are introduced, and a tension member of the optical cables is fixed to the case body to connect the optical fiber core wires to each other, a fixing hole and a fixing hole of the fixing case in the fixed case. In addition to forming an insertion slit that opens on the peripheral surface, a gripping lever is formed at the end, and a fastening member having an insertion hole penetrating in the radial direction in the middle is rotatably fitted in the fastening hole. The tension member is inserted into the insertion hole through the insertion slit and the fastening hole, and the holding member for rotating and fastening the fastening member is formed, and at the same time, the cable distribution is performed. An indoor cable gripping tool, which is connected to the hole and locks an indoor cable that is inserted into a wiring groove that is provided opposite to the holding portion, is detachably fixed to the wiring groove, and the indoor cable in the wiring groove is attached. A storage case for connecting optical cables, characterized in that 2. The indoor cable gripping tool is a member having an E-shaped cross section made of polypropylene resin, which is fitted into the wiring groove by the guide grooves on both sides, and is provided on a wall surface forming the wiring groove. The optical cable connecting storage case according to claim 1, further comprising: a claw portion that is locked by the locking portion, and a contact convex portion that presses the cable. 3. The fixed case is detachably fitted in a case in which a core wire accommodating portion including an annular wall around which a cable is wound and a pressing piece and a connector holding portion for connecting the core wire is detachably mounted. Storage case for the optical cable connection described. 4. The fixing case has a holding portion having a fastening hole for fastening a tension member, which is arranged opposite to the wiring groove, and an indoor cable is attached to each of the outer peripheral wall surfaces of the holding portion facing the wiring groove. The storage case for connecting an optical cable according to claim 1, wherein the storage case can be held by a gripping tool.