JP2002365445A - Optical termination box - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an inexpensive and small optical termination box by drastically reducing the varieties and the number of component parts. SOLUTION: In the optical termination box 1 in which an optical fiber cable 56 is terminated and connected to an optical fiber cord 59 or another fiber cable for example, a part of the termination box body 1a is extended to form projections 3a, 3b, 4a, 5a, 6a, 6b, which are folded inside of the box body 1a to make seats 3A, 3B, 4A, 5A, 6A, 6B for installing various types of parts. Holes and screw holes are machined on these seats 3A, 3B, 4A, 5A, 6A, 6B, so that various parts are installed and that functions are given holding, fixing and guiding the optical fiber cable 56 and the optical fiber cord 59 or another optical fiber cable for example.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical termination box for terminating an optical fiber cable and connecting the optical fiber cable to another optical fiber cable or an optical fiber cord. And a cost-reducing and miniaturized optical termination box.

[0002]

2. Description of the Related Art An optical termination box which has been widely manufactured and used in the past is for terminating an optical fiber cable and connecting it to an optical fiber cord or another optical fiber cable. On top of this, various dedicated parts with the required functions are mounted and fixed at any designed position with screws, etc., and optical fiber cables and optical fibers introduced into the optical termination box with those parts The cord, the optical connector or its constituent parts are gripped and covered by a cover.

A conventional optical termination box 50 as shown in FIG.
A column-shaped cover fixing base 52 is attached to the base bottom plate 51 as a separate component.
And a cover 53 is fixed to the cover fixing base 52 with screws or the like.

[0004] A cable sheath clamp 54 and a tension member clamp 55 are attached to the base bottom plate 51 with screws or the like. The introduced optical fiber cable 56 is gripped by the cable sheath clamp 54 and the cable tension member is provided. 57 is gripped by the tension member clamp 55 and introduced and fixed into the optical termination box 50.

Further, a cord tension member clamp 58 is attached to the base bottom plate 51 with screws or the like.
In the introduced optical fiber cord 59, the cord tension member 60 is gripped by the cord tension member clamp 58.

The optical fiber core 56a of the optical fiber cable 56 and the optical fiber core 59a of the optical fiber cord 59
Together with the optical fiber connecting portion 61 connecting both ends thereof,
The optical fiber is accommodated and accommodated in an optical fiber extra length accommodating portion 62 formed in the base bottom plate 51.

The introduced optical fiber cable 56 and optical fiber cord 59 are introduced through the cable introduction grommet 63 and the cord introduction grommet 64 provided on the cover 53, so that dust and the like enter the optical termination box 50. Is prevented.

As described above, the conventional optical termination box 50 has a structure in which components having necessary functions are separately attached to the base bottom plate 51 of the box. Accordingly, the type and number of constituent parts are required to be large and expensive, and a considerable amount of mounting space is required, making it difficult to reduce the size. Improvements are also required for cost reduction and size reduction.

[0009]

However, as is apparent from the above description, in the conventional optical termination box 50, the necessary components for performing the necessary functions as the optical termination box 50 are separately provided. These are specially designed and manufactured parts, all of which are fixed to the base bottom plate 51 of the optical termination box 50. Therefore, there is a problem that the type and the number of required components are large and the cost is high. further,
In order to fix those parts on the base bottom plate 51,
It is not rational because it takes time and effort for installation work.

[0010] Further, since a large mounting space is required, there is a problem that further miniaturization is difficult. Since further cost reduction, miniaturization, resource saving, and the like of optical termination boxes are required, it is required to solve these problems.

SUMMARY OF THE INVENTION An object of the present invention is to provide a low-cost and compact optical termination box in which the types and the number of parts are greatly reduced.

[0012]

SUMMARY OF THE INVENTION The present invention has been made to achieve the above object, and the invention of claim 1 is as follows.
In an optical termination box for terminating an optical fiber cable and connecting to an optical fiber cord or another optical fiber cable, a part of the termination box main body is extended to form a projection, and the projection is formed. It is bent to the inside of the termination box main body to make various component mounting pedestals, and holes and screw holes are made in the various component mounting pedestals, and various components are attached, and optical fiber cables, optical fiber cords or other optical fiber cables etc. are attached. It is an optical termination box that has the function of holding, fixing and guiding.

According to the second aspect of the present invention, the height of the projection formed by extending a part of the side plate of the main body coincides with the vicinity of the center of the optical fiber cable introduced into the optical termination box. In this manner, the cable is bent at 90 ° or an arbitrary angle to the cable side to form a cable component mounting pedestal, a hole or a screw hole is formed on the cable component mounting pedestal, and a cable gripping component is mounted, and a sheath of the introduced optical fiber cable is introduced. The optical termination box according to claim 1, wherein the cable termination clamp is a cable sheath clamp for gripping a cable tension member and a cable tension member clamp for gripping a cable tension member.

According to a third aspect of the present invention, the height of the projection formed by extending a part of the side plate of the main body coincides with the vicinity of the center of the optical fiber cord introduced into the optical termination box. In this manner, the optical fiber is bent at 90 ° or at an arbitrary angle to the cord side to form a cord component mounting pedestal, and a hole or a screw hole is formed on the cord component mounting pedestal, and a cord gripping component is attached thereto. 2. The optical termination box according to claim 1, wherein the box is a cord tension member clamp for gripping a tension member of the cord.

[0015]

Preferred embodiments of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a perspective view of an optical termination box according to a preferred embodiment of the present invention.

As shown in FIG. 1, an optical termination box 1 according to the present invention terminates an optical fiber cable 56 and connects it to an optical fiber cord 59, an optical fiber cord with a connector, or another optical fiber cable. Is what you do.

The optical termination box 1 has a container-shaped termination box main body 1a composed of a base bottom plate 2, a right side plate 3, a left side plate 4, a front plate 5, and a back plate 6, and a cover to be covered from above the main body 1a. 7 and has a box shape as a whole. The cover 7 has screw holes 8, 9, 9 and 9 for fixing the cover 7 with screws when the cover 7 is put on the main body 1 a.
10 are formed. That is, the main body 1a includes a rear plate 6, a front plate 5, a left side plate 4,
A right side plate 3 is provided, and is bent inward by 90 ° from the base bottom plate 2 to form a box.

At the center of the front plate 5, a projection 5a is formed which extends upward when the front plate 5 is bent by 90 ° toward the base bottom plate 2 side. A screw hole 11 is provided in the protrusion 5a.
Are formed. The protruding portion 5a is bent 90 ° inside the main body 1a to form the cover fixing pedestal 5A. A substantially circular cable introduction grommet groove 12 is formed on the left side of the front plate 5, and a substantially concave cord introduction grommet groove 13 is formed on the right side of the front plate 5. The cable introduction grommet 63 is fitted into the cable introduction grommet groove 12 from above, and the cord introduction grommet 64 is provided.
Is fitted into the cord introduction grommet groove 13 from above. That is, the grommets 63 and 64 are structured so as not to fall off from the main body 1a.

Since the optical fiber cable 56 and the optical fiber cord 59 introduced into the optical termination box 1 are introduced through or sandwiched between the respective grommets 63 and 64, dust and the like into the optical termination box 1 are introduced. Mixing is prevented and reliable dust prevention is achieved.

Projections 6a and 6b are formed at both ends of the back plate 6 and extend upward when the back plate 6 is bent at 90 ° to the base bottom plate 2 side. The projections 6a and 6b have
Screw holes 14 and 15 are respectively formed. These projections 6a, 6b are also bent 90 ° inside the main body 1a to form cover fixing pedestals 6A, 6B, similarly to the projection 5a.

As described above, a part of the front plate 5 and the rear plate 6 is lengthened and made high, and further bent 90 ° inside the box to provide screw holes, thereby forming the cover fixing pedestals 5A, 6A and 6B. The optical termination box 1 covers the cover fixing seats 5A, 6A, and 6B with the cover 7, and the screw holes 11, 14, 15 and the screw holes 8,
9 and 10 are matched with each other, and the cover 7 is fastened and fixed with screws. This is a feature of the present invention in that a dedicated component such as the columnar cover fixing base 52 of the conventional example described with reference to FIG. 2 is not required.

Protrusions 3a extending upward when the right side plate 3 is bent 90 ° toward the base bottom plate 2 are formed near the front plate 5 side of the right side plate 3 (near the inlet of the optical fiber cable 56). Have been. A screw hole for attaching a thin plate-like cable gripping component 16 is formed in the projection 3a. The projection 3a is bent toward the cable 56 at 90 ° or an arbitrary angle so that the projection 3a has a height corresponding to the vicinity of the center of the optical fiber cable 56 introduced into the optical termination box 1, and is attached to the cable sheath clamp. Pedestal 3A
Becomes

On the cable sheath clamp mounting base 3A,
Attach the thin plate cable gripping part 16 with screws etc.
The cable sheath clamp 17 holds the sheath of the introduced optical fiber cable 56.

The right side plate 3 located at a predetermined distance from the protrusion 3a toward the back plate 6 has a protrusion 3 extending upward when the right side plate 3 is bent 90 ° toward the base bottom plate 2 side.
b is formed. A screw hole for attaching the thin plate-like cable gripping component 18 is formed in the protruding portion 3b. The projection 3b is bent toward the cable 56 at 90 ° or an arbitrary angle so as to have a height corresponding to the vicinity of the center of the optical fiber cable 56 introduced into the optical termination box 1, and the cable tension member clamp is formed. It becomes the mounting base 3B.

A thin plate-like cable gripping part 18 is attached to the cable tension member clamp mounting base 3B with screws or the like, and a cable tension member clamp 19 for gripping the tension member 57 of the introduced optical fiber cable 56 is provided.

As described above, a part of the right side plate 3 is made longer and higher, and further bent inwardly by 90 ° to form a screw hole, and a cable sheath clamp mounting base 3A and a cable tension member clamp mounting base 3B are provided. ing.

The mounting pedestals 3A and 3B are provided with extremely simple structural parts (thin-plate cable gripping parts 16, 1 and 2).
By mounting 8) with screws, a simple cable sheath clamp 17 and a simple cable tension member clamp 19 are realized. This makes it possible to extremely simplify and reduce the size of the dedicated components such as the cable sheath clamp 54 and the tension member clamp 55 of the conventional example described with reference to FIG. 2 and greatly reduce the types and the number of components. is there.

The introduced optical fiber cable 56 is gripped by the cable sheath clamp 17 provided on the cable sheath clamp mounting base 3A, and
7 is a cable tension member clamp mounting base 3B
And is stored and fixed in the optical termination box 1.

Near the front plate 5 side of the left side plate 4 (near the inlet of the optical fiber cord 59), there is formed a projection 4a extending upward when the left side plate 4 is bent 90 ° toward the base bottom plate 2 side. Have been. A screw hole for attaching the cord gripping component 20 is formed in the projection 4a.
The height of the projection 4a is set so as to coincide with the vicinity of the center of the optical fiber cord 59 introduced into the optical termination box 1.
It is bent toward the cord 59 at 90 ° or any angle to form the cord tension member clamp mounting base 4A.

The cord-tensioning member 20 in the form of a thin plate is attached to the cord-tension-member clamp attachment base 4A with screws or the like, and the cord-tensioning member clamp 21 for holding the cord-tensioning member 60 of the introduced optical fiber cord 59.

As described above, a part of the left side plate 4 is made longer and higher, and further bent inwardly by 90 ° to form a screw hole to form a cord tension member clamp mounting base 4A, and a thin plate-like cord gripping part. For example, a cord tension member clamp 21 is formed by attaching a Kevlar gripping component such as a crimp terminal with a screw. Thus, the feature of the present invention is that the large and complicated special-purpose cord tension member clamp 58 described in FIG. 2 is not required.

In the introduced optical fiber cord 59, the cord tension member 60 is gripped by the cord tension member clamp 21 to have a tensile strength.

The optical fiber core 56a of the introduced optical fiber cable 56 and the optical fiber core 59a of the optical fiber cord 59 are connected by the optical fiber core connector 22.
The extra lengths of the optical fiber core connection part 22, the optical fiber core 56a, and the optical fiber core 59a are accommodated in an optical fiber extra length accommodation part 23 formed in the optical termination box 1.

As described above, according to the present invention, the components can be simplified, the number of components can be reduced, the resource can be saved, the workability is easy, and a low-cost optical termination box is realized. be able to.

Further, since the constituent parts are simple, the number of parts is small, the size of the parts can be reduced, and the internal space can be effectively used. Therefore, the size of the optical termination box can be reduced, and the mounting space can be reduced. It becomes possible.

The present invention has the same functions as those of the conventional example, but greatly reduces the types and the number of components that exhibit the required functions to reduce the cost and extremely reduce the time and effort for mounting the components. In this way, the space inside the optical termination box is effectively used to achieve downsizing, and at the same time save resources.

According to the present invention, since the components are simple, the workability of construction is good. In addition, since the space between the component base and the bottom surface of the base plate is reduced and the space can be utilized for wiring and routing of the optical fiber core, further downsizing can be achieved.

The present invention can be applied to the same method of use, purpose of use, and place of use as in the conventional example, but due to the miniaturization, the space for grounding the optical termination box can be reduced, and The miniaturization and high density can be achieved by combining the device with the built-in end box, the rack and the box.

In this embodiment, an example in which the present invention is applied to an optical termination box has been described. However, the present invention is applicable not only to an optical termination box but also to, for example, an optical termination device or an optical terminal box. Can be applied.

The present invention is not limited by materials, dimensions, capacities, functions and the like, but can be widely applied. In the present invention, there is no restriction on the materials of parts and constituent materials to be used. Furthermore, in the present invention, there are no restrictions on the type, number, size, capacity, and the like of the functions added to the optical termination box.

[0042]

As is apparent from the above description,
According to the present invention, the following excellent effects are exhibited.

(1) The components can be simplified, the number of components can be reduced, resources can be saved, work workability can be facilitated, and a low-cost optical termination box can be realized.

(2) Since the components are simple, the number of components is small, the size of the components can be reduced, and the internal space can be effectively used. Therefore, the miniaturization of the optical termination box can be realized, and the mounting space can be reduced. Becomes possible.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a preferred embodiment of the present invention.

FIG. 2 is a perspective view of a conventional optical termination box.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Optical termination box 3a, 3b, 4a, 5a, 6a, 6b Projection part 3A, 3B, 4A, 5A, 6A, 6B Component mounting base 56 Optical fiber cable 59 Optical fiber cord

Continued on the front page F term (reference) 2H038 CA36 CA37 CA38 5G355 AA10 BA01 BA11 5G375 AA18 BA27 BB13 BB24 CA02 CA19 CC02 DB16 DB23

Claims (3)

[Claims] In an optical termination box for terminating an optical fiber cable and connecting to an optical fiber cord or another optical fiber cable, a part of the termination box main body is extended to form a projection. The projections are bent inside the termination box body to form various component mounting pedestals, and various components are mounted on the various component mounting pedestals by mounting holes and screw holes, and optical fiber cables, optical fiber cords or other An optical termination box having a function of gripping, fixing, and guiding an optical fiber cable or the like. 2. A projection formed by extending a part of a side plate of a main body, and having a height of 90 ° or a height corresponding to the vicinity of the center of an optical fiber cable introduced into an optical termination box. Bend to the cable side at an arbitrary angle to form a cable component mounting pedestal, make holes or screw holes in the cable component mounting pedestal, attach the cable gripping component, and grip the introduced optical fiber cable sheath. The optical termination box according to claim 1, wherein the optical termination box is a cable tension member clamp that holds the sclamp and the cable tension member. 3. The projection formed by extending a part of the side plate of the main body is formed at an angle of 90 ° or so as to have a height corresponding to the vicinity of the center of the optical fiber cord introduced into the optical termination box. A cord that bends at an arbitrary angle to the cord side to form a cord component mounting pedestal, a hole or a screw hole is formed in the cord component mounting pedestal, a cord gripping component is attached, and a tension member of the introduced optical fiber cord is gripped. The optical termination box according to claim 1, which is a tension member clamp.