JPH068906U - Optical fiber extra length processing mechanism - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a reliable optical fiber surplus processing mechanism with excellent workability in maintenance and operation. [Structure] The optical fiber 6 has a predetermined bending radius r (R ≧ 2r) required for communication characteristics, and has a substantially cylindrical shape in which a plurality of grooves 11 for winding the optical fiber 6 for extra length treatment are formed. The optical fiber extra length accommodation member 8 is provided.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an optical fiber surplus length processing mechanism, and more particularly to an optical fiber surplus length processing mechanism applied to a communication device using a plurality of optical fibers.

[0002]

[Prior art]

 FIG. 8 is a perspective view showing a conventional technique of an optical fiber surplus length processing mechanism applied to a communication device using a plurality of optical fibers. In the figure, various electronic components (not shown) constituting the communication device are mounted on the shelf 1 for each function in package units, and these electronic packages are electrically connected by a mother board 2.

A plurality of optical connectors 4 are arranged on the back surface of the mother board 2, and the mother board 2 and the optical fibers 6 are connected via the connectors 4. The optical fiber 6 is a signal line for exchanging information with other communication devices by digitally transmitting a signal by light, and one optical fiber 6 is connected to one optical connector 4.

When each optical fiber 6 is connected to the optical connector 4, extra length processing is performed. Conventionally, this extra length processing has been performed by providing the metal fitting 3 attached to the shelf 1 with two optical fiber extra length accommodation members 5. That is, as shown in the figure, the extra length is processed by winding a plurality of optical fibers 6 connected to the adjacent optical connectors 4 around the optical fiber extra length accommodation member 5.

In this case, it is necessary to secure the bending radius of the optical fiber 6 at a certain fixed value or more, for example, r or more, in view of communication characteristics. For this reason, the optical fiber 6 needs to be wound around the optical fiber extra length accommodation member 5 at a distance A (A ≧ 2r) so that the dimension r can be secured.

[0006]

However, in such a conventional technique, since a large number of optical fibers 6 are wound around one optical fiber surplus length accommodation member, the following problems occur in maintenance and operation. It was

When the optical fiber 6 is added or partially removed, it is difficult to wind and remove it. It is difficult to trace from the introduction part of the optical fiber 6 to the optical connector 4, and the workability at the time of failure is poor. When the optical fiber 6 subjected to the excess length is pulled, the bending radius may not reach the required dimension to be secured, which may deteriorate the communication characteristics. When the high-density mounting progresses and it becomes necessary to connect a larger number of optical fibers 6, the above-mentioned problems become more remarkable. As described above, the conventional optical fiber surplus length processing mechanism has various problems in terms of its structure, reliability, and workability in maintenance and operation.

An object of the present invention is to solve the above-mentioned drawbacks of the prior art and to provide a highly reliable optical fiber surplus processing mechanism which is excellent in workability in maintenance and operation.

[0009]

[Means for Solving the Problems]

 SUMMARY OF THE INVENTION In order to solve the above problems, the present invention provides an optical fiber surplus length processing mechanism in a communication device for transmitting signals using a plurality of optical fibers, in which a predetermined bending radius r required by the optical fiber is required. And a substantially cylindrical optical fiber extra length accommodating member in which a plurality of grooves for winding the optical fiber to be subjected to extra length treatment are formed.

[0010]

[Action]

 According to the present invention, since the optical fiber is wound around the groove formed in the optical fiber extra length accommodating member, the extra length is processed. Therefore, the extra length is effectively removed when the optical fiber is added or partially removed. In addition, the bending radius required for communication characteristics can be secured, and highly reliable surplus fiber length processing can be performed.

[0011]

【Example】

 Next, an embodiment of an optical fiber surplus length processing mechanism according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a perspective view of an embodiment of an optical fiber surplus length processing mechanism according to the present invention when it is attached to a communication device. As shown in the figure, in this embodiment, a cylindrical tubular optical fiber extra length accommodation member 8 is provided in place of the optical fiber extra length accommodation member 5 shown in FIG. In FIG. 1, the same components as those in FIG. 8 used in the description of the conventional technique are designated by the same reference numerals, and the duplicated description will be omitted here.

FIG. 2 is a side view of the tubular optical fiber extra length accommodating member 8 a attached to the metal fitting 7, and a front view of a portion attached to the metal fitting 7, as a first embodiment of the optical fiber extra length processing mechanism. The figure is shown. The extra length accommodating member 8a is a cylindrical accommodating member in which a plurality of grooves around which the optical fiber 6 (see FIG. 1) is wound are formed, and two mounting holes 9 for attaching to the metal fitting 7 are formed at one end thereof. Has been done. The extra length accommodation member 8a is fixed to the metal fitting 7 with a screw 10.

As described above, the optical fiber 6 needs to have a bend radius of r or more in view of its communication characteristics. Therefore, the diameter of the groove 11 of the extra length accommodating member 8a is a diameter R (R ≧ 2r) that can ensure this dimension r.

In this embodiment, one optical fiber 6 is subjected to extra length processing for one groove 11 and is connected to the connector 4. Therefore, work such as addition, removal, or tracking of the optical fiber 6 can be performed much more efficiently than before. Further, in the present embodiment, since the bending radius of the optical fiber 6 can be reliably ensured to be r or more, the extra length processing can be performed without deteriorating the communication characteristics.

FIG. 3 shows a cylindrical optical fiber extra length accommodating member 8b as a second embodiment of the optical fiber extra length processing mechanism according to the present invention. This embodiment differs from the first embodiment in that the groove 11 is coated with an adhesive rubber 12. Therefore, in the second embodiment, in addition to the effect of the first embodiment, there is an effect of preventing the wound optical fiber 6 from coming apart.

FIG. 4 shows a cylindrical optical fiber extra length accommodating member 8c as a third embodiment of the optical fiber extra length processing mechanism according to the present invention. This embodiment is different from the first embodiment in that protrusions 13 are formed on both sides of the groove 11 to prevent the optical fibers 6 wound around the groove 11 from being disengaged. In this embodiment, the protrusions 13 are formed at different positions on both sides of the groove 11, but the shapes and positions of the protrusions 13 are the same as long as they can lock the optical fibers 6 wound on both sides of the groove 11. It is not limited to those shown in the figure. Similar to the second embodiment, this embodiment also has the effect of preventing the wound optical fiber 6 from coming apart in addition to the effect of the first embodiment.

FIG. 5 is an explanatory view showing an arrangement example of the protrusions 13. The protrusions 13 are provided at four places on the left, right, top and bottom as indicated by the arrows in the figure. Since it is necessary to secure a certain radius of curvature when the optical fiber 6 is bent, the projection 13 has a shape and arrangement in consideration of this. More specifically, various measures have been taken to reduce the protrusion of the protrusions 13 in the groove direction to some extent, or to secure a certain distance between the protrusions 13.

FIG. 6 is a perspective view of a fourth embodiment of the optical fiber surplus length processing mechanism according to the present invention, and FIG. 7 is a side view of a cylindrical optical fiber surplus length accommodating member 8d in the same embodiment. The front view is shown. This embodiment differs from the first embodiment in that an optical connector address 14 indicating the optical connector 4 to which the optical fiber 6 wound around the groove 11 is connected is attached. In this embodiment, the optical connector address 14 makes it possible to know at a glance which optical connector 4 the optical fiber 6 wound around the groove 11 is connected to. Therefore, it is not necessary to trace the optical fiber 6 from the optical connector 4 at the time of failure or removal, and workability can be improved. By combining this embodiment with the second or third embodiment, it is possible to effectively carry out the extra length treatment of the optical fiber.

In this embodiment, one optical fiber 6 is connected to one optical connector 4; however, even when a plurality of optical fibers 6 are connected to one optical connector 4, for example. Of course, the present invention can be applied. For example, even in such a case, if the groove 11 is assigned to each connector 4, it is desirable that the width of the groove 11 can be arbitrarily changed for each connector. Therefore, the optical fiber excess length accommodating member 8 may have a structure in which the width of the groove 11 can be arbitrarily set.

[0021]

[Effect of device]

 As described above, according to the optical fiber surplus length processing mechanism of the present invention, the optical fiber surplus length accommodating member is formed into a cylindrical shape that secures a necessary radius in consideration of the communication characteristics of the optical fiber, and has a groove for winding the optical fiber. Formed. As a result, it is possible to efficiently handle the excess length when adding or removing some optical fibers, and also to ensure the bend radius required for communication characteristics, so it is highly reliable. A mechanism can be provided.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of an optical fiber surplus length processing mechanism according to the present invention.

FIG. 2 is a schematic view showing a first embodiment of an optical fiber surplus length processing mechanism.

FIG. 3 is a schematic view showing a second embodiment of an optical fiber surplus length processing mechanism.

FIG. 4 is a schematic view showing a third embodiment of an optical fiber surplus length processing mechanism.

5 is an explanatory view showing the positions of protrusions in the third embodiment shown in FIG.

FIG. 6 is a perspective view showing another embodiment of the optical fiber surplus length processing mechanism according to the present invention.

FIG. 7 is a schematic view showing a fourth embodiment of the optical fiber excess length processing mechanism.

FIG. 8 is a perspective view of a conventional optical fiber excess length processing mechanism.

[Explanation of symbols]

 1 Shelf 2 Motherboard 4 Optical connector 6 Optical fiber 7 Metal fittings 8a-8d Tubular optical fiber extra length accommodation member 9 Mounting hole 10 Screw 11 Groove 12 Adhesive rubber 13 Protrusion 14 Optical connector address

Claims (6)

[Scope of utility model registration request] 1. An optical fiber surplus length processing mechanism in a communication device for transmitting a signal using a plurality of optical fibers, wherein a predetermined bending radius r required for the communication characteristics of the optical fiber is secured, and the surplus length is maintained. An optical fiber surplus length treating mechanism comprising a substantially cylindrical optical fiber surplus length accommodating member in which a plurality of grooves for winding an optical fiber to be processed are formed. 2. The surplus length processing mechanism according to claim 1, wherein the surplus length optical fiber accommodation member is attached to the shelf of the communication device via a mounting member. . 3. The optical fiber according to claim 1, wherein one groove is formed in the optical fiber extra length accommodating member, and one optical fiber is subjected to extra length treatment. Extra length processing mechanism. 4. The surplus length processing mechanism according to claim 1, wherein each groove formed in the surplus length accommodation member for optical fiber is coated with an adhesive material. Long processing mechanism. 5. The extra length treating mechanism according to claim 1, wherein the optical fibers to be extra length processed are locked in the grooves formed in the optical fiber extra length accommodating member so as not to come apart. An optical fiber surplus length processing mechanism, characterized in that stop portions are provided at predetermined intervals. 6. The extra length processing mechanism according to claim 1, wherein a connection destination of the wound optical fiber is displayed in the vicinity of each groove formed in the extra optical fiber accommodation member. Optical fiber extra length processing mechanism.