JP3730321B2 - Storage case for optical cable connection - Google Patents

Description

[0001]
BACKGROUND 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. Specifically, each cable such as an optical cable including a tension member in the case body, an indoor cable without a tension member, an air blow cable, etc. The present invention relates to a storage case for connecting an optical cable in which a cable is held in a fixed state.
[0002]
[Prior art]
When connecting an optical fiber having an optical fiber and a tension member, it is indispensable to fix the tension member. For this reason, conventionally, a screw hole is formed in the optical cable connection storage case, and the end of the tension member is wound around the screw member screwed into the screw hole and fastened with a tool.
[0003]
[Problems to be solved by the invention]
However, the conventional optical cable connection storage case has a problem that the screw member is likely to loosen with time, and the tension member and the cable may be disconnected. This problem can be solved by providing a member such as a lock nut or by re-tightening the screw member periodically. A new problem arises in that the cable fixing operation becomes complicated. In the latter case, a new problem arises in that an enormous amount of inspection man-hours for the optical cable connection storage case is required.
The present invention is intended to eliminate the conventional drawbacks, and can fix optical cables, tension members, indoor cables, air bronze cables, etc. without loosening over time, and can easily perform fixing work. It is an object to provide a storage case for connecting an optical cable that can be easily handled by using each cable together.
[0004]
[Means for Solving the Problems]
The present invention constitutes a storage case in which a cable case is formed by detachably attaching a lid case to a fixed case, and a case where a plurality of optical cables having optical fiber core wires and tension members are formed from the cable route In the optical cable connection storage case, which is introduced into the optical cable, and the optical cable tension member is fixed to the holding part provided in the fixed case and the optical fiber core wire is connected in the storage case. And an insertion slit that communicates with the fixing hole, and there is an insertion hole connected to the insertion slit, and a fixing member having a gripping lever that is engaged with the lid case is rotated to the fixing hole. The tension member inserted freely through the insertion slit and the insertion hole is fixed by the fixing member, and the cable member is connected to the cable holding hole. Search A cable gripping tool for locking a cable inserted into the cable is detachably fixed to the routing groove, and includes a core winding part for winding the optical fiber core wire, and a connector housing part for connecting the core wire The core wire storage part is detachably arranged on the fixed case.
[0005]
DETAILED DESCRIPTION OF THE INVENTION
In the optical cable connecting storage case according to the present invention, the fixing member is inserted into the fixing hole of the tension member holding portion provided in the fixed case, and the insertion hole and the insertion slit of the fixing member are made continuous. When the tension member of the optical cable is inserted into the insertion hole and the insertion slit, and the fastening member is rotated to the fastening position by the operation of the grip lever of the operation unit, the tension member is moved between the fastening hole and the fastening member. It is pinched and fastened in between. Then, the optical cable is connected by a connector, 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, a core wire storage portion having a connector storage portion that can be stored alone or in combination of an SC connector, a single-core MT connector, or a mechanical splice is selected and fitted in the fixed case. In the case of an indoor cable, the cable can be clamped with a simple operation by simply passing the cable through the routing groove provided in the holding portion and inserting the cable gripping tool into the cable. After this, when the lid case is assembled, the holding portion formed in the case engages with the operation lever and the cable gripper of the fastening member, and the fastening member is prohibited from rotating, that is, the fastening member holds the tension member. It is held at the secured position, and the cable gripping tool is prevented from being pulled out. Therefore, it is possible to reliably prevent the tension member and the indoor cable from being detached.
If there is no SC connector or mechanical splice inside the fixed case, remove the core wire storage part from the fixed case and store it by bending or winding it in the fixed case using an air blow pipe. The stopper provided is abutted and fixed to the wiring hole, and the lid case can be assembled and securely stored without the air bron cable being disconnected.
[0006]
Embodiment
An embodiment of the present invention will be described below with reference to FIGS. 1 to 13. As shown in FIG. 13, a branched optical cable C branched from an aerial closure B provided on a trunk optical cable A is connected to an optical cable according to the present invention. The lead-in optical cable E is branched and routed from the optical cable connection storage case 1 into the building D. The optical cable connecting storage case 1 can also be used as an optical outlet, and when used as an optical outlet, it can be configured in either a wall-embedded type or an externally attached type, but it is an example shown in the figure. Then, it is used by being connected to the ONU 2 with a termination cable G routed in the building D through an optical outlet F installed in the building D.
[0007]
An optical cable connecting storage case 1 (hereinafter simply referred to as a storage case) includes a fixed case 10 attached to the outer wall surface of a building D and a lid case 50 covering the fixed case 10 as shown in FIGS. These are assembled to form the case body. The fixed case 10 is formed by resin injection molding or the like, and cable introduction holes 11 and 12 are formed. An optical cable having an optical fiber core and a tension member is introduced from the cable arrangement holes 11 and 12. The fixing case 10 is provided with a holding portion 13 for fixing the tension member of the optical cable to the case body. The holding portion 13 includes a fixing hole 16 and an insertion slit opened on the peripheral surface of the fixing hole 16. 19, and a fastening member 14 having an insertion hole 7 connected to the insertion slit 19 is rotatably fitted in the fastening hole 16. 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 fixing member 14 through the insertion slit 19 and the fixing hole 16, and the fixing member 14 is rotated to be fixed.
[0008]
A cable groove 15 that is connected to the cable cable holes 11 and 12 and that is provided in the holding part 13 and is detachably fixed to the cable groove 15 to lock the cable. 17, the cable inserted into the routing groove 15 is fixed. The holding portion 13 having the fastening hole 16 for fastening the tension member is disposed opposite to the routing groove 15, and the cable can be held by the cable gripping tool 17 on the outer peripheral wall surface of the holding portion 13 facing the routing groove 15. It is good to have a configuration.
[0009]
The cable gripping tool 17 is an E-shaped member made of a synthetic resin such as polypropylene resin and is fitted into the routing groove 15 by the guide grooves 18 and 18 on both sides, and the routing groove 15 is formed. The cable is provided with a claw portion 21 that is locked to the locking portion 20 provided on the wall surface and the contact projections 22 and 22 that press the cable, so that the cable can be fastened with one touch without using a tool. In addition, when the lid case 50 is assembled, the contact member provided in the lid case 50 is brought into contact with each other so that a removal prevention mechanism is provided. (FIGS. 1 and 2)
[0010]
The fixed case 10 is detachably fitted with a core wire storage portion 30 in which a core wire winding portion 31 and a connector storage portion 32 are partitioned. The core wire winding portion 31 winds a cable. A core wire storage portion provided with a connector storage portion 32 formed of an annular wall and a pressing piece 33 for storing a SC connector for connecting a core wire on both sides, and further provided with a single core MT connector storage portion 36 partitioned by a partition wall 40 30, and can be fitted by fitting locking portions 34 and 35 formed corresponding to the side wall of the fixed case 10 and the core wire storage portion wall. (FIGS. 3 and 4)
In this case, the core wire storage portion 30 is a case in which an annular wall is provided upright on the bottom and the periphery at the periphery and in the center, and forms a connector holding portion that can accommodate an SC connector, a single core MT connector or a mechanical splice alone or in combination You can select and use what you did. For example, in this embodiment, two SC connectors and four single-core MT connectors are accommodated (single-core MT connectors are each divided into two left and right, and stacked in two stages). It is also possible to use a connector holding part that can accommodate two connectors, two single-core MT connectors, or two mechanical splices).
[0011]
The connector housing portions 32 are provided on both sides, the single-core MT connector housing portion 36 is provided next to each other through the partition wall 40, and the core wire winding portion 31 is formed on the inner side. The face plate is provided with connector projecting holes 41 and 42 so that a connector can be easily taken out by inserting a stick or the like. (FIGS. 5 and 6)
[0012]
As shown in detail in FIGS. 7 to 9, the fastening member 14 is rotatably fitted in the fastening hole 16, and the fastening hole 16 has a groove-like difference vertically above and below the front opening portion. The insertion slit 19 opens. The insertion slit 19 is connected to the insertion hole 7 of the intermediate portion 8 of the fixing member 14 that is continuous with the fixing hole 16 and is fitted in this portion, and the insertion slit 19 and the insertion hole 7 are connected to the insertion slit 19. The tension member of the optical cable is inserted.
[0013]
The wiring groove 15 is a groove having a predetermined depth that opens on the front surface side, and communicates with the cable wiring holes 11 and 12 for cable introduction and vertically cuts vertically. Either an optical cable or an indoor cable is routed in the routing groove 15, and the optical fiber core wire is guided from the notch 37 to the core winding part 31 and the connector housing part 32 through the routing groove 15. Further, the tension member is inserted into the insertion slit 19 from the routing groove 15 and is fixed by the fixing member 14 in the fixing hole 16 of the holding portion 13. Further, in the case of the indoor cable I, it is only necessary to insert the cable from the routing groove 15 and press and hold it with the cable gripping tool 17 on the outer periphery of the holding portion 13. (Fig. 7)
[0014]
Further, the fixing case 10 is provided with a fitting locking portion 34 to which the lid case 50 is attached, and a fitting hole locking portion 35 for fitting to the fixing case 10 is provided on the lid case 50 side. It is preferable to provide the lid case 50 with an abutting portion or a hooking portion that contacts the gripping lever 9 and the cable gripping tool 17 so as to perform a locking function.
[0015]
The core wire storage part 30 has a core wire winding part 31 for winding the cable core wire divided into a central part, and a plurality of protrusions that project the connector storage part 32 on both the left and right sides. Each of the core wire winding portions 31 is integrally formed with a core wire pressing piece 33 extending radially toward the cable introduction portion at the tip portion. These core wire holding pieces 33 hold down and hold the optical fiber core wire wound around the core wire winding portion 31. An SC connector 3 is accommodated in the connector accommodating portion 32, and an optical fiber core wire is connected by the SC connector 3.
[0016]
Reference numeral 25 denotes an attachment 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 that penetrate the attachment hole 25.
[0017]
As shown in FIG. 9, the fastening member 14 is composed of 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. The end face of the large-diameter portion 6 faces the front side through the hole 16 and is rotatably inserted. The fastening member 14 is formed with a grip lever 9 for operation on one end face of the large diameter portion 6, and an insertion hole 7 is formed in the intermediate portion 8 and opens on the peripheral surface. The fastening member 14 has a connection state in which the insertion hole 7 is continuous with the insertion slit 19, and the end of the tension member is inserted into the insertion hole 7. is engaged with the convex portion 9 _1, 9 ₂ (hereinafter, referred to as the fixing position) to hold fastening the tension member.
[0018]
In the optical cable connection storage case 1 according to this embodiment, when connecting the branched optical cable C and the lead-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. The optical cable C and the lead-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 lead-in optical cable E is passed through the other routing hole 12. Then, the optical fiber core wire of each optical cable is led to the cable winding / connecting portion and connected by the connector 3, and the extra length portion is wound and held in the core wire storage portion 30.
[0019]
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, after the fixing member 14 is positioned at a position where the insertion hole 7 is continuous with the insertion slit 19, the end of the tension member is inserted from the insertion slit 19 into the insertion hole 7. Next, the gripping lever 9 of the fastening member 14 is rotated 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 cable is inserted from the routing groove 15, and the cable gripping tool 17 is fitted into the routing groove 15 and pressed and held by the holding portion 13.
[0020]
Thereafter, the core wire storage portion 30 of the fixed case 10 is covered with the cover case 50 and the cover case 50 is attached to the fixed case 10. Here, the contact piece such as the holding projection on the inner surface of the lid case 50 abuts on the fixing member 14 and the cable gripping tool 17 of the fixed case 10 and is locked to inhibit the movement. Therefore, the tension member and the cable fixed by the fixing member 14 and the cable gripping tool 17 can be prevented from being loosened.
In this embodiment, a grip lever 9 extending in the radial direction is integrally formed on the large diameter portion 6 of the fastening member 14 so as to be manually operable. The fixed case 10 is formed with a lever accommodating portion such as a recess for accommodating the grip lever 9 at the fixing position of the fixing member 14, and the inner surface of the lid case 50 is positioned in the lever accommodating portion in a covered state. A holding portion for pressing and holding the holding lever 9 is formed and can be manually operated without using a tool such as a screwdriver. Therefore, cable connection work is easy.
Further, in each of the above-described embodiments, the lid case 50 is attached to the fixed case 10 to prevent the fastening member 14 from rotating and holding (preventing lifting), but the lid case 50 only prevents lifting. It is also possible. In this case, a non-rotating section having a deformed cross section such as a square is formed at the end of the fixing member 14, and the non-rotating section is fitted to the bottom surface of the fixing hole 16 of the fixed case 10. Form a non-rotating hole, insert the non-rotating part of the fastening member 14 in a state different from the phase of the non-rotating hole, and insert the tension member with the end face of the non-rotating part riding on the opening edge of the non-rotating hole. After being inserted into the insertion hole 7, the fixing member 14 is rotated by a predetermined angle so that the non-rotating portion is fitted into the non-rotating hole, thereby preventing the fixing member 14 from being lifted by the inner surface of the attached lid case 50. It can also be configured as follows.
[0021]
In the specific examples of FIGS. 10 to 12, the core wire storage portion 30 is provided with a connector storage portion 32 that can receive the SC connector 3 detachably attached to the fixed case 10. In some cases, the core wire storage unit 30 is fixed and used. When there is no connection member such as an SC connector or a mechanical splice, the core wire storage unit 30 is detached from the fixed case 10 and used. (See Figure 11)
[0022]
In other words, when using the air bron cable J, the air bron pipe 38 is used to wind it inside the fixed case or turn it into a U shape, and the bron pipe stopper 43 fixes the pipe to the cable routing holes 11 and 12. The lid case 50 can be assembled and effectively stored and held so that the air bron cable J does not come off.
The core wire storage portion 30 is not limited to the SC connector 3 and can be replaced with a type that can store and hold various connectors.
[0023]
【The invention's effect】
The present invention relates to an optical cable connection storage case in which a tension member of an optical cable is fixed to a holding part provided in a fixed case and an optical fiber core wire is connected in the storage case, and a fixing hole and the fixing hole are formed in the holding part. An insertion slit that communicates with the insertion slit, and there is an insertion hole that connects to the insertion slit, and a fastening member having a gripping lever that is engaged with the lid case is rotatably fitted in the fastening hole. The fastening member is used to fasten the tension member inserted into the insertion slit and the insertion hole, and is further inserted into the routing groove that is connected to the cable routing hole and that is opposed to the holding portion. A cable gripper that engages with the lid case and is removably fastened to the routing groove, and a core winding part for winding the optical fiber core, and a connector for connecting the core A core wire storage section provided with a storage section. By detachably installing the case, the tension member is inserted into the insertion hole from the insertion slit and operated with the gripping lever of the fastening member, and is held by the fastening member. When the gripping tool is fitted and clamped, and the core wire storage part of the fixed case is covered and attached by the lid case, the lid member suppresses the movement of the fastening member and the cable gripping part, and the secured tension member and cable are loosened. Since the lock function is eliminated and various cables can be held in a fixed state, the fixing work can be fixed with a simple tool-less operation when the lid case is incorporated into the fixed case, and the tension member and indoor Cables and Air-Bron cables can also be easily operated with a single touch, greatly improving the workability of cable connection work, and after connecting the cable The plug can be connected to the adapter, the connection members can be fixed together in a central storage section, the storage is easy, the cable can be securely gripped, the configuration is simple and inexpensive, and the tension member or The indoor cable can be securely fastened, and the effect of effectively preventing loosening over time can be obtained.
In addition, it eliminates the conventional drawbacks, and can fix the tension member, indoor cable or air blown cable without loosening over time, and can also be easily fixed and handled by using each cable together. An easy storage case for optical cable connection can be provided.
[Brief description of the drawings]
BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is a perspective view of a storage case for connecting an optical cable according to an embodiment of the present invention, with a cover case removed, (a) a front view, (b) a side view, and (c). Is a plan view.
2 shows a cable gripper used in the optical cable connection storage case of the example of FIG. 1, wherein (a) is a front view thereof, (b) is a plan view, (c) is a side view, and (d) is a use case. It is a perspective view of a state.
3 is a perspective view of the example of FIG. 1 in use.
4 is a front view of a separated state using the example of FIG. 1. FIG.
FIGS. 5A and 5B are enlarged explanatory views of a part of the core wire storage portion, in which FIG. 5A is a front view and FIG. 5B is a longitudinal sectional view taken along line AA.
FIG. 6 is an enlarged view of the core wire storage part, (a) is a partially cut side view, (b) is a rear view, and (c) is a partially cut bottom view.
7 is a detailed perspective view of a portion of the example of FIG.
8A and 8B show details of the tension member holding portion, in which FIG. 8A is an enlarged longitudinal sectional view taken along line BB in FIG. 4, and FIG. 8B is a front view thereof.
9A and 9B show a fastening member used in the optical cable connecting storage case, wherein FIG. 9A is a side view thereof, and FIG. 9B is a front view thereof.
10A and 10B show a core wire storage unit according to another embodiment of the present invention, in which FIG. 10A is a front view thereof, FIG. 10B is a partially cut side view, and FIG.
FIG. 11 is a perspective view of the use separation state of the example of FIG.
12 is a perspective view of the example of FIG. 10 in use.
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 middle part 9 gripping lever 10 fixed case 11, 12 routing hole 13 holding part 14 fastening member 15 routing 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 31 Core wire winding portion 32 Connector storage portion 33 Core wire presser pieces 34, 35 Fitting lock portion 36 Single core MT connector housing part 38 Air blow pipe 40 Partition wall 41, 42 Connector projection hole 50 Lid case

Claims (4)

A cover case 50 is detachably assembled to the fixed case 10 to constitute a storage case in which the cable routing holes 11 and 12 are formed. An optical cable having an optical fiber core wire and a tension member is formed from the cable routing holes 11 and 12. introduced into the storage case, the optical cable connecting housing case to connect the optical fibers in and fixed to the holding portion 13 in the housing case having the fixed case 10 a tension member of the optical cable,
A holding hole 16 and an insertion slit 19 communicating with the fixing hole 16 are formed in the holding portion 13, and there is an insertion hole 17 connected to the insertion slit 19. A fastening member 14 with a lever 9 is rotatably fitted in the fastening hole 16, and the fastening member 14 is used to fasten the insertion slit 19 and the tension member inserted into the insertion hole 7, Furthermore, the said cable Haisakuana 11,12 cable gripper 17 Ru engaged in the lid case 50 to lock the cable to be inserted into wiring groove 15 which is oppositely arranged to the holding portion 13 becomes communicated et al The fixed case 10 includes a core wire storage portion 30 that is detachably fixed to the routing groove 15 and includes a core wire winding portion 31 around which an optical fiber core wire is wound and a connector storage portion 32 for connecting a core wire. optical cables, characterized in that removably deployed Continue for the storage case. The cable gripper 17 is an E-shaped member made of a synthetic resin and is fitted into the routing groove 15 by the guide grooves 18 on both sides, and is provided on the wall surface forming the routing groove 15. The optical cable connecting storage case according to claim 1, further comprising a claw portion 21 that is locked to the portion 20 and an abutting convex portion 22 that presses the cable. The core wire receiving portion 30, an annular wall is erected around and central portion, a case that fit can wear fitting engagement portions 34 and 35 corresponding to the fixed case 10, the core wire winding portion 31 3. A storage case for connecting an optical cable according to claim 1 or 2, wherein a connector holding part 32 capable of accommodating a single connector or a combination of an SC connector, a single fiber MT connector, or a mechanical splice is formed. The fixed case 10, the holding portion 13 with a fastening hole 16 communicating with the insertion slit 19 which fastened the tension member opposite deployed wiring groove 15, the outer periphery of the holding portion 13 facing the該配Sakumizo 15 The storage case for connecting an optical cable according to claim 1, 2, or 3, wherein the indoor cable I can be held on the wall surface by the indoor cable gripping tool 17 .

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