JP2000075144A - Optical fiber coupling module - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform wiring work of an optical fiber only on one side of an optical wiring shelf in an optical fiber coupling module. SOLUTION: When an inter station side optical fiber code 4a is joined to a rear side adaptor 24, first, guide rails 48, 48 of a guide part 40 are inserted into guide grooves of a module main body 20 bottom part, and plural pieces of inner station side optical fiber codes 4a are arranged on a space formed between the module main body 20 and a shelf guide frame 42. Succeedingly, the inner station side optical fiber codes 4a are wound around an outer peripheral surface of around guide 46 to be folded back to the rear side adaptor 24 side, and their tips are joined to the rear side adaptor 24. Thus, plural pieces of inner station side optical fiber codes 4a are laid from the front end part side of the module main body 20 to the rear end part side through the above- mentioned space to be joined to the rear side adaptor 24 in the state that a prescribed bend radius is secured by the round guide 46.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical fiber connecting module for connecting optical fibers to each other, and more particularly, to an optical fiber in which a connecting portion for connecting one optical fiber is provided at a rear end of a module body. Regarding the connection module.

[0002]

2. Description of the Related Art As a conventional optical fiber connection module, for example, a module described in Japanese Patent Application Laid-Open No. 9-197138 is known. The optical fiber connection module described in this publication connects a subscriber side optical fiber and an office side optical fiber via a connection optical cord. This optical fiber connection module has a module main body housed in a cabinet (optical wiring frame), and a rear side optical connector connector for connecting a central optical fiber and a connection optical cord is provided on a rear surface of the module main body. Notch is attached. A receiving tray is provided in the module main body so as to be able to be pulled out. At the front end of the receiving tray, a subscriber-side optical connector receiving portion for connecting the subscriber-side optical fiber and the connection optical cord is provided. I have.

[0003]

However, in the above-mentioned prior art, as described above, the optical connector provided at the end of the optical fiber at the office side is inserted into the insertion section of the optical connector at the office provided at the rear surface of the module body. The optical connector provided at the end of the optical fiber connected to the subscriber is housed in the optical connector housing portion provided at the front end of the storage tray. Therefore, when the worker performs the wiring work of the office side optical fiber and the subscriber side optical fiber, the storage tray is pulled out, the optical connector of the subscriber side optical fiber is connected to the connection optical cord, and then the worker is connected. Moved to the rear side of the optical wiring rack, and the optical connector of the optical fiber on the office side was inserted into the optical connector insertion part of the office side. In this case, there is a need for a space for wiring work on the rear side of the optical wiring rack, and thus there is a problem that the optical wiring rack cannot be installed close to a wall or the like.

[0004] It is an object of the present invention to provide an optical fiber connection module capable of performing an optical fiber wiring operation only on one side of an optical wiring rack.

[0005]

In order to achieve the above-mentioned object, the present invention relates to an optical fiber for connecting a plurality of first optical fibers and a plurality of second optical fibers housed in an optical wiring rack. In the fiber connection module, a module main body which is housed in an optical wiring rack so as to be able to be taken in and out in the front-rear direction, and provided at a rear end thereof with a connecting portion for connecting a plurality of first optical fibers, and a plurality of first optical fibers And a routing means for routing from the front end side to the rear end side of the module main body.

[0006] By providing the module main body and the routing means in this manner, an operator can pull out the module main body from the optical wiring rack on the front side of the optical wiring rack.
A plurality of first optical fibers are routed from the front end side to the rear end side of the module main body and connected to the connecting portion, and then the module main body is housed in the optical wiring rack. For this reason, workers
After the module body is stored in the optical wiring frame, there is no need to turn around the rear side of the optical wiring frame and connect a plurality of first optical fibers to the connecting portion. Can be done with

In the above optical fiber connection module,
Preferably, the module main body guide member is detachably attached to the bottom of the module main body. Thereby, a space for routing the plurality of first optical fibers from the front end side to the rear end side of the module main body can be formed at the bottom of the module main body.

In this case, for example, the module body guide member has a rail that fits into a groove formed to extend in the front-rear direction at the bottom of the module body. Thus, the module main body guide member can be inserted and removed from the bottom of the module main body.

Preferably, the routing means is a space formed between the module main body and the module main body guide member and through which a plurality of first optical fibers pass.
Thus, the plurality of first optical fibers can be routed from the front end side to the rear end side of the module main body through the space.

[0010] The routing means may be an insertion groove formed on the side surface of the module body so as to extend in the front-rear direction, and into which a plurality of first optical fibers are inserted. Thereby, the plurality of first optical fibers can be routed from the front end side to the rear end side of the module main body through the insertion groove.

In this case, preferably, a lid member having a notch extending in the front-rear direction corresponding to the insertion groove is attached to the opening of the insertion groove. Thereby, the first optical fiber can be inserted into the insertion groove from the cut portion, and the first optical fiber is prevented from falling out of the insertion groove.

Further, preferably, the plurality of first optical fibers routed from the front end to the rear end of the module main body are folded back to the connecting portion, and a predetermined bending radius of the first optical fiber is adjusted. The fiber guide member to be secured is arranged near the connecting portion. This prevents the first optical fiber from being broken when connecting the plurality of first optical fibers to the connecting portion.

In this case, preferably, the fiber guide member is a disk-shaped rotatable member provided at an end of the module body guide member. Thus, the plurality of first optical fibers are connected to the connecting portion while being wound on the outer peripheral surface of the fiber guide member, so that the fiber guide member can be rotated without forcibly pulling the first optical fiber. Thus, the first optical fiber can be shifted in the front-rear direction.

[0014]

Embodiments of the present invention will be described below with reference to the drawings.

First, an optical fiber connection module according to a first embodiment of the present invention will be described with reference to FIGS.

FIG. 1 is a sectional view showing an optical fiber connection module according to the present invention. In the figure, an optical fiber connection module 100 includes an office optical fiber cord (first optical fiber) 4a extending from an office optical cable 4 and an office optical fiber cord (second optical fiber) extending from an office (subscriber) optical cable 2. Fiber 2a). A transmission device (not shown) is connected to the inside optical cable 4, and a subscriber terminal (not shown) is connected to the outside optical cable 2.

The above optical fiber connection module 100
As shown in FIG. 2, as shown in FIG.
In the direction perpendicular to the plane of the paper when viewed from above). The optical wiring frame 10 is a rectangular parallelepiped housing having an upper frame 12 and a lower frame 14.
A plurality (five in this case) of optical fiber connection modules 100 are housed side by side in the space between the lower frame 14 and the lower frame 14. Five guide grooves 12a extending in the front-rear direction are formed at a lower portion of the upper frame 12, and five guide grooves 14a are formed at an upper portion of the lower frame 14 so as to face the respective guide grooves 12a. In addition, the upper frame 12 and the lower frame 14 are
Are arranged in the vertical direction.

Returning to FIG. 1, the optical fiber connection module 1
00 is the module body 20 and the module body 2
Guide member 4 attached to the bottom of the cylinder
0. The lower rear end of the module body 20 is notched in order to arrange a round guide 46 of the guide member 40 described later.

At the rear end of the module body 20, there is provided a rear adapter 24 which is a connecting portion for connecting a plurality of office optical fiber cords 4a. By connecting an optical connector (not shown) provided at the tip of 4a, the optical fiber cord 4a inside the office and a plurality of connection cords 34 arranged in the module body 20 are connected.

At the lower front end of the module body 20, there is provided a front adapter 26 for connecting a plurality of outside optical fiber cords 2a. The front adapter 26 is provided at the front end of the outside optical fiber cord 2a. By connecting an optical connector (not shown), the outside optical fiber cord 2a is connected to a plurality of connection cords 36 arranged in the module body 20.

The connection cord 34 and the connection cord 3
6 is connected via a connection portion 38. Connection part 38
Denotes a fusion reinforcing portion formed by fusion splicing with a fusion machine (not shown), a branch portion for performing multi-core / single-core branching, and the like.

Further, at the upper end of the module body 20,
A frame guide frame 28 that fits into the guide groove 12a of the upper frame 12 of the optical wiring frame 10 is formed to extend in the front-rear direction. As shown in FIG. 3, guide grooves 30 extending in the front-rear direction are formed on both side surfaces of the bottom of the module body 20.

As shown in FIGS. 4 and 5, the guide member 40 is fitted in a guide groove 14a formed in the lower frame 14 of the optical wiring frame 10 and is formed to extend in the front-rear direction. 42, and guide grooves 30, 3 formed at the top of the frame guide frame 42 so as to extend in the front-rear direction and formed at the bottom of the module body 20.
0, a pair of L-shaped guide rails 48, 48 having a portion to be fitted to the pair, a pair of support frames 44, 44 fixed to one end of the bridge guide frame 42, and the pair of support frames 44. , 44 and a disc-shaped round guide 46 as an example of a fiber guide member having guide flanges 46a, 46a formed at both ends in the axial direction. Here, the frame guide frame 42 and the guide rails 48 constitute a module body guide member.

As shown in FIG. 3, the guide rails 48 extend between the module body 20 and the frame guide frame 42 when the guide rails 48 are inserted into the guide grooves 30, 30. Is formed such that a space 32 is formed, which is a routing means for passing the optical fiber cord 4a inside the station.

Also, as shown in FIG.
A stopper 50 protruding toward the front end is provided at an end (rear end) of the round guide 46 on the side of the round guide 46, and the stopper 50 has a hook 50a at the tip. Stopper 50
Is a fixing hole 2 formed at the lower rear end of the module body 20.
2 (see FIG. 1), and when the hook 50a is hooked on the inner wall (not shown) formed in the fixing hole 22, the guide member 40 is fixed to the module body 20.

As shown in FIGS. 1 and 3, the round guide 46 passes through the space 32 formed between the module main body 20 and the rack guide frame 42, from the front end to the rear end of the module main body 20. A plurality of office optical fiber cords 4a routed in the direction are folded back toward the rear adapter 24, and a predetermined bending radius of the office optical fiber cord 4a is secured.

In this embodiment configured as described above, when an operator performs an optical wiring operation, first, with the guide member 40 pulled out from the module main body 20, the station is placed on the front side of the optical wiring rack 10. A plurality of office inside optical fiber cords 4a extending from the inside optical cable 4 are extended from the front end side to the rear end side of the module main body 20 along the bottom of the module main body 20. Subsequently, the guide rails 48, 48 of the guide member 40 are inserted into the guide grooves 30, 30 at the bottom of the module main body 20, and a plurality of station inside light are inserted into the space 32 formed between the module main body 20 and the guide frame 42. After the fiber cord 4a is arranged, the guide member 40 is fixed to the module body 20. Subsequently, the distal end of the office inside optical fiber cord 4a is wound around the outer peripheral surface of the round guide 46 through the space between the round guide 46 and the frame guide frame 42, and the office inside optical fiber cord 4a is folded back to the rear adapter 24 side. Then, the optical connector at the end of the optical fiber cord 4a inside the office is connected to the rear adapter 24.

As a result, as shown in FIG. 1, a plurality of optical fiber cords 4a inside the office pass through the space 32 formed between the module body 20 and the guide member 40 from the front end side of the module body 20. The wire is drawn to the rear end side, and is connected to the rear adapter 24 with a predetermined bending radius secured by the round guide 46.

Thereafter, the bridge guide frame 28 of the upper end of the module body 20 and the bridge guide frame 42 of the guide member 40 are inserted into the guide grooves 12a of the upper frame 12 and the guide grooves 14a of the lower frame 14 of the optical wiring frame 10, respectively. Then, the optical fiber connection module 100 is housed in the optical wiring frame 10. Then, the optical connectors at the distal ends of the plurality of office optical fiber cords 2 a extending from the office optical cable 2 are connected to the front adapter 26.

In this embodiment configured as described above, before mounting the optical fiber connection module 100 on the optical wiring frame 10, the operator needs a plurality of stations on the front side of the optical wiring frame 10. The inner optical fiber cord 4a is inserted into the space 32 formed between the module body 20 and the guide member 40.
The cable is routed from the front end to the rear end of the module main body 20 via the connector and connected to the rear adapter 24, so that the operator can perform the optical fiber wiring work only on the front side of the optical wiring rack 10. That is, the operator connects the optical fiber cord 4a inside the office to the rear adapter 24 in advance on the front side of the optical wiring frame 10, and then mounts the optical fiber connection module 100 on the optical wiring frame 10. It is only necessary to connect a plurality of outside optical fiber cords 2a to the front adapter 26 on the front side of the rack 10, move to the rear side of the optical wiring rack 10 and connect the inside optical fiber cord 4a to the rear adapter 24. There is no need to connect. Therefore, no space is required on the rear side of the optical wiring rack 10 for wiring work, and the optical wiring rack 10 can be installed close to a wall or the like.

The guide member 40 is provided with a rotatable disk-shaped round guide 46, and the optical fiber cord 4 inside the station is provided.
a is wound around the outer peripheral surface of the round guide 46 and folded back toward the rear adapter 24, so that a predetermined bending radius of the intra-office optical fiber cord 4a is secured and the intra-office optical fiber cord 4a is broken. Can be prevented.

Furthermore, since the optical fiber cord 4a is connected to the rear adapter 24 while being wound on the outer peripheral surface of the round guide 46, for example, the rear adapter 2
When it is desired to process the extra length of the inside optical fiber cord 4a formed in the vicinity of the optical fiber cord 4, the inside optical fiber cord 4a can be shifted to the front end side of the module body 20 by rotating the round guide 46. it can. Therefore, it is possible to prevent the office optical fiber cord 4a from being forcibly pulled and the office optical fiber cord 4a from being broken.

A second embodiment of the optical fiber connection module according to the present invention will be described with reference to FIGS. This embodiment differs from the first embodiment in that the means for routing the optical fiber cord 4a from the front end to the rear end of the module main body is changed. In the figure, the first
The same reference numerals are given to the same or equivalent members as those of the embodiment, and the description is omitted.

6 and 7, the optical fiber connection module 100A has a module main body 20A and a guide member 40A integrally fixed to the bottom of the module main body 20A.

The module main body 20A is provided with a guide groove 3 formed in the module main body 20 in the first embodiment.
Instead of 0 and 30, it has an insertion groove 72 formed in the lower side surface and extending in the front-rear direction (the left-right direction in FIG. 6). The insertion groove 72 functions as a routing unit into which a plurality of office optical fiber cords 4a extending from the office optical cable 4 are inserted.

The opening of the insertion groove 72 is provided with the insertion groove 7.
2, a cover member 74 having a cutout 74K extending in the front-rear direction is attached. This lid member 74
Is composed of two lids 74a and 74b made of resin such as urethane, and these lids 74a and 74b are fixed to opposing inner wall surfaces forming both sides of the insertion groove 72, respectively. The cutout 74K is formed to be thinner than the optical fiber cord 4a, and the optical fiber cord 4a can be passed through the cutout 74K by the elastic force of the lids 74a and 74b.

In addition, the lid member may be constituted by a single lid portion made of, for example, resin, and the lid portion may be fixed to one of opposing inner wall surfaces forming both side portions of the insertion groove 72, and the inner wall surface may be fixed. May be formed with a notch smaller than the optical fiber cord 4a.

The guide member 40A is similar to the guide member 40 in the first embodiment, and includes
A pair of support frames 44, 44 and a round guide 46 are provided.
It is fixed to the bottom of 0A.

In this embodiment configured as described above, when an operator performs an optical wiring operation, a plurality of office-side optical fiber cords 4a are inserted from the cutout 74K between the cover members 74a and 74b of the cover member 74. Each of the modules is inserted into the insertion groove 72, and the optical fiber cord 4a is routed from the front end to the rear end of the module body 20A.

Thereafter, similarly to the first embodiment, the inside optical fiber cord 4a is wrapped around the outer peripheral surface of the round guide 46 and folded back toward the rear adapter 24, and the optical connector at the end of the inside office optical fiber cord 4a is connected. The rear adapter 2
Connect to 4. Then, the optical fiber connection module 10
0A is housed in the optical wiring frame 10, and the optical connector at the tip of the optical fiber cord 2a outside the office is connected to the front adapter 26.

In this embodiment configured as described above, the optical fiber connection module 100A is
Before mounting on a plurality of office inside optical fiber cords 4a
Is drawn from the front end side to the rear end side of the module main body 20A through the insertion groove 72, and is connected to the rear adapter 24. Therefore, as in the first embodiment, the operator can
There is no need to move to the rear side for wiring work.

In the present embodiment, the cover member 74 is attached to the opening of the insertion groove 72 so as to form a notch 74K extending in the front-rear direction corresponding to the insertion groove 72. Even if the guide member does not have a structure that can be inserted into and removed from the module main body as described above, the inside optical fiber cord 4a can be routed from the front end side to the rear end side of the module main body 20A. In addition, the cover member 74 can prevent the inside optical fiber cord 4a from falling out of the insertion groove 72.

In the embodiment described above, the round guide 46 for securing a predetermined bending radius of the optical fiber cord 4a inside the office is provided on the guide member, but the cord itself has a function of defining the bending radius. In the case where the radius guide 46 is provided, such a radius guide 46 may not be particularly provided.

[0044]

According to the present invention, since the optical fiber wiring work can be performed only on the front side of the optical wiring rack, no space is required for the wiring work on the rear side of the optical wiring rack. The rack can be installed close to a wall or the like.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a first embodiment of an optical fiber connection module according to the present invention.

FIG. 2 is a front view of an optical wiring rack accommodating the optical fiber connection module shown in FIG.

FIG. 3 is a sectional view taken along line III-III of FIG. 1;

FIG. 4 is a side view of the guide member shown in FIG.

FIG. 5 is a rear view of the guide member shown in FIG. 1;

FIG. 6 is a sectional view showing a second embodiment of the optical fiber connection module according to the present invention.

FIG. 7 is a sectional view taken along line VII-VII of FIG. 6;

[Explanation of symbols]

2a: outside optical fiber cord, 4a: inside optical fiber cord, 10: optical wiring frame, 20, 20A: module body, 24: rear adapter, 30: guide groove, 32: space, 40, 40A: guide member , 42 ... frame guide frame, 46 ... are guide, 48 ... guide rail, 7
2 ... insertion groove, 74 ... lid member, 74K ... notch, 10
0,100A: Optical fiber connection module.

Claims (8)

[Claims] 1. An optical fiber connection module housed in an optical wiring rack for connecting a plurality of first optical fibers and a plurality of second optical fibers, wherein the optical fiber connecting module can be freely inserted into and removed from the optical wiring rack in the front-rear direction. A module main body, which is housed and provided with a connecting portion for connecting the plurality of first optical fibers to a rear end portion, and the plurality of first optical fibers are connected from the front end side to the rear end side of the module main body. An optical fiber connection module, comprising: a routing means for routing toward the optical fiber. 2. The optical fiber connection module according to claim 1, wherein a module main body guide member is detachably attached to the bottom of the module main body. 3. The optical fiber connection module according to claim 2, wherein the module main body guide member has a rail that fits into a groove formed to extend in the front-rear direction at the bottom of the module main body. 4. The device according to claim 2, wherein the routing means is formed between the module main body and the module main body guide member, and is a space through which the plurality of first optical fibers pass. An optical fiber connection module as described in the above. 5. The module according to claim 1, wherein the routing means is an insertion groove formed on a side surface of the module body so as to extend in the front-rear direction, and for inserting the plurality of first optical fibers. An optical fiber connection module according to any one of claims 1 to 3. 6. The optical fiber connection module according to claim 5, wherein a lid member having a notch extending in the front-rear direction corresponding to the insertion groove is attached to an opening of the insertion groove. 7. A plurality of first optical fibers routed from a front end side to a rear end side of the module main body are turned back to the connecting portion side, and a predetermined bending radius of the first optical fiber is adjusted. The optical fiber connection module according to any one of claims 1 to 6, wherein a fiber guide member to be secured is arranged near the connecting portion. 8. The optical fiber connection module according to claim 7, wherein said fiber guide member is a disk-shaped rotatable member.