JPH0430563Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention provides a cable tension member, a plurality of optical fiber units each having a plurality of optical fiber cores and a unit tension member, and a cable tension member. The present invention relates to an optical fiber connection board for connecting optical fiber cables comprising a fiber optic member and a jacket layer covering the plurality of optical fiber units.

[Conventional technology and its problems]

Conventionally, when connecting this type of optical fiber cable, each optical fiber core wire was connected by fixing the jacket layer and the cable tension member, respectively. In other words, each optical fiber core wire is exposed at the portion where the jacket layer and cable tension member are fixed. Therefore, the optical fibers to be connected were mixed up, resulting in poor work efficiency. Furthermore, the positions of each member for fixing the outer jacket layer, cable tension member, etc. are determined by each connection board. Therefore, if the connection board is set to handle the case where the optical fiber cable to be connected is inserted into the connection board from below, if the connection board is placed in a position where the optical fiber cable is inserted from above the connection board. If the cable is attached, the cable must be routed downward and then inserted into the connection board, which is cumbersome and requires an extra length of cable.

This invention solves these conventional problems and
The purpose is to provide an optical fiber connection board that is easy to perform connection work and maintenance.

[Means for solving problems]

The optical fiber connection board of the present invention includes a cable tension member, a plurality of optical fiber units each having a plurality of optical fiber cores and a unit tension member, and the cable tension member and the plurality of optical fiber units. An optical fiber connection board for connecting optical fiber cables, comprising: an outer jacket layer covering the optical fiber cable; A tension member fixing member for fixing a cable tension member, a connecting member for connecting an optical fiber core of an optical fiber unit with an extra length provided, the jacket layer fixing member and the tension member fixing member. and a mounting member to which the connecting member is attached interchangeably.

[Action]

With the configuration described above, the positions of the jacket layer fixing member, tension member fixing member, and connection member can be interchanged, and the insertion direction of the optical fiber cable inserted into the connection board can be changed. We can also accommodate you if you do.

〔Example〕

Hereinafter, the present invention will be explained in detail based on drawings showing embodiments.

FIG. 1 shows an optical fiber connection board according to the present invention, to which an optical fiber cable 1 as shown in FIG. 3 is connected.

Thus, the optical fiber cable 1 includes a cable tension member 2 made of steel wire or the like, a plurality of optical fiber units 3 (two in the illustrated example), and the cable tension member 2 and optical fiber units 3, 3. An outer covering layer 4 covering the.
As shown in FIG. 4, the optical fiber unit 3 includes a unit tension member 5 made of steel wire or the like, and the unit tension member 5 and optical fiber core wires 6 (six in the example shown). and a covering buffer layer 7 made of polypropylene string or the like. Further, the outer covering layer 4 includes an outer covering material 8 and the outer covering material 8.
and a filler 9 interposed between the optical fiber unit 3 and the optical fiber unit 3. 10... are intervening members interposed within the outer covering layer 4.

Therefore, this optical fiber connection board fixes the connection box 11 (in the illustrated example, the box 11 has an open shape with the lid omitted) and the jacket layer 4 of the optical fiber cable 1. The jacket layer fixing member 12, the tension member fixing member 13 that fixes the tension member 2 of the optical fiber cable 1, and the connecting member 14 that fixes the unit tension member 5 of the optical fiber unit 3 (in the example shown in FIG. ) and.

The outer covering layer fixing member 12, the tension member fixing member 13, and the connecting member 14 are mutually replaceable via attachment members 15, 15, which are a pair of rigid frames attached to the box body 11. It is attached to the box body 11 as a. Specifically, the outer covering layer fixing member 12 and the tension member fixing member 13 are
Each of them is made of a square bar with a substantially rectangular cross section, and is attached to the attachment members 15, 15 in the form of a horizontal frame. Further, the connecting member 14 is attached to the mounting members 15, 15 in a horizontal structure, and the thin plate body 1 is substantially rectangular when viewed from above.
6, extra length forming members 17, 17 fixed to both ends of the thin plate body 16 to provide an extra length of the optical fiber core 6; It consists of a connector holding member 19 attached with an optical fiber connector 18 for connecting the fiber core wire 6.

Further, as shown in FIG. 2, the extra length forming members 17 include a channel-shaped extra length forming body 20 having an inner flange at the open end, and a plurality of extra length forming members 17 are housed inside the extra length forming body 20 and are made of sponge or the like. It consists of an optical fiber core holding member 22 having an elastic body 21, and the tip of the optical fiber core 6 is wound around the elastic body 21 so as to be placed therein.

The outer covering layer fixing member 12, the tension member fixing member 13, and the connecting member 14 are respectively attached to the attachment members 15, 15 with attachment tools 28 such as screws, but in this case, the attachment members 28... Set the mounting pitch of the two to be the same. In other words, the dimension X between the fittings 28, 28 of the outer covering layer fixing member 12 and the tension member fixing member 13, and the fitting 2 of the connecting member 14.
Set the dimension Y between 8 and 28 to be the same. Furthermore, ducts 23, 23 into which the optical fiber unit 3 is inserted are attached to both ends of the connecting member 14. That is, the ducts 23, 23 are attached to the attachment members 15, 15, respectively, along the longitudinal direction.

Therefore, from the lower wall 24 of the box body 11, the box body 11
The optical fiber core wires 6 . That is, the jacket layer 4 at the tip of the optical fiber cable 1 on the left side of the figure is fixed to one end (the left end in the diagram) of the jacket layer fixing member 12, and the cable tension member of the optical fiber cable 1 is fixed to the side of the jacket layer fixing member 12. 2 is fixed to one end (left end in the figure) of the tension member fixing member 13. Note that in order to fix the outer covering layer 4 to the outer covering layer fixing member 12, for example, when the outer covering material 8 of the outer covering layer 4 is made of metal, the tip of the outer covering material 8 of the outer covering layer 4 is A fitting 25 is provided which forms a threaded portion and has a threaded hole into which the threaded portion is threaded into the outer covering layer fixing member 12, and the threaded portion is threaded into the threaded hole. Furthermore, in order to fix the cable tension member 2 to the tension member fixing member 13,
For example, a fixture 26 made of a crimp terminal or the like having a mounting hole is fixed to the tip of the tension member 2,
The fixture 26 is attached to the tension member fixing member 13 using screws or the like through the attachment hole. Further, when the outer covering material 8 is made of a synthetic resin other than metal, it is preferable to use a crimp terminal or the like as the fitting 25 similar to the fixing device 26, or to use one having an approximately Ω-shaped cross section. .

Then, from the outer coating layer 4 to the optical fiber unit 3,
3 is exposed, and the exposed optical fiber units 3, 3 are inserted into the duct 23 (left side),
Each unit 3, 3 is made to protrude from the duct 23 to one end (left end) side of each connecting member 14, 14. Further, the unit tension member 5 and the optical fiber core wire 6 are exposed from the unit 3, and the tension member 5 is crimped using the crimp used to fix the cable tension member 2 to the tension member fixing member 13. It is fixed to the thin plate body 16 of the connecting member 14 with a fixture 27 made of a crimp terminal or the like similar to a terminal, and each exposed optical fiber core 6 is held by the extra length forming member 17 to hold each optical fiber core. Part 2
2 as shown in the figure, and the tips of the optical fiber cores 6 are inserted into the optical fiber connector 18. Therefore, each optical fiber core wire 6... is provided with an extra length.

Further, in the optical fiber cable 1 on the right side, similarly to the optical fiber cable 1 on the left side, the jacket layer 4 is fixed to the jacket layer fixing member 12, and the cable tension member 2 is fixed to the tension member fixing member 13. Furthermore, the optical fiber units 3, 3 are connected to each connecting member 14, 1 via the duct 23 (right side).
4, the unit tension member 5 is fixed to the thin plate member 16 of the connecting member 14, and the tip of each optical fiber core 6... is attached to the extra length forming member 17. It is inserted into the optical fiber connector 18 . . .

Therefore, the optical fiber core wires 6 of the left and right cables 1, 1 are connected with extra length, respectively.

Therefore, when the optical fiber cables 1, 1 are inserted from the upper wall 29 of the box body 11 as shown in FIG. are set the same, so if the outer covering layer fixing member 12, tension member fixing member 13, and connection member 14 are sequentially installed from the upper wall 29 side as shown in the figure, the light will be the same as in the case of FIG. Fiber cables 1, 1 can be connected.

The present invention is not limited to the illustrated embodiment, and design changes may be made without departing from the gist of the present invention. For example, in the illustrated example, the optical fiber cable 1 has three optical fiber units 3; Core wire 6
Although the number of connecting members 14 is six, it is of course possible to use fewer or more connecting members, and the number of connecting members 14 can also be increased or decreased. In addition, the outer covering layer fixing member 1
2. Tension member fixing member 13, connection member 1
4. The ducts 23, 23 and the mounting members 15, 15 are made into one unit, and multiple units are assembled into the box 1.
You are free to choose the interior as 1. In addition, the connection of each optical fiber core wire 6 can be made by connector connection (that is, detachable connection) as shown in the figure, permanent connection (fusion splicing), or coexistence of connector connection and permanent connection. You are free to do so. Furthermore, the box body 11 can be mounted in any direction, up, down, left, or right. In addition, the mounting member 15
Instead of using a pair of rigid frames as shown in the illustration, it is also possible to use a single plate member or the like.

[Effect of idea]

For example, in the optical fiber connection board of the present invention, as shown in FIG. , the connecting member 14, and when the optical fiber cables 1, 1 are inserted from above as shown in FIG.
By switching the positions of the members 12, 13, and 14, the outer sheath layer fixing member 12, the tension member fixing member 13, and the connecting member 14 can be formed in order from above, thereby making the optical fiber cable 1 extra long. Optical fiber cables can be easily and quickly connected. Therefore, one connection board can accommodate the insertion directions of the upper and lower optical fiber cables 1, and there is no need to manufacture various connection boards, contributing to cost reduction. Further, the optical fiber unit 3 of the optical fiber cable 1 can be guided as a unit to the connecting member 14. In other words, each optical fiber core wire 6 does not become so-called "disjointed" up to the vicinity of the part to which it is connected. Therefore, there is no possibility of mixing up the optical fiber cores 6, 6 to be connected, and connection work and maintenance are easy to perform, and each optical fiber core 6...
Easy to organize.

[Brief explanation of the drawing]

Fig. 1 shows one embodiment of the present invention, a front view when the optical fiber cable is inserted from below, and Fig. 2 shows an embodiment of the present invention.
The figure is an enlarged cross-sectional view of the extra length forming member, Figure 3 is an enlarged cross-sectional view of the optical fiber cable, Figure 4 is an enlarged cross-sectional view of the optical fiber unit, and Figure 5 is an enlarged cross-sectional view of the optical fiber cable inserted from above. Front view of the case. 1... Optical fiber cable, 2... Table tension member, 3... Optical fiber unit, 4
...Outer cover layer, 5...Unit tension member,
6... optical fiber core wire, 12... jacket layer fixing member, 13... tension member fixing member, 14...
...Connecting member, 15...Mounting member.

Claims (1)

[Scope of utility model registration request] A cable tension member, a plurality of optical fiber units having a plurality of optical fiber cores and a unit tension member, and an outer covering layer covering the cable tension member and the plurality of optical fiber units. An optical fiber connection board for connecting optical fiber cables, comprising: an outer covering layer fixing member for fixing an outer covering layer of the optical fiber cable; and a tensioner for fixing a cable tension member of the optical fiber cable. The member fixing member, the connecting member for connecting the optical fibers of the optical fiber unit with extra length, the jacket layer fixing member, the tension member fixing member, and the connecting member are mutually interchangeable. An optical fiber connection board characterized by comprising: a mounting member to be attached as an optical fiber connection board;