JPH01126607A - Closer for optical fiber cable - Google Patents

Abstract

PURPOSE:To facilitate handling of optical fibers by providing a connecting bar to a deep side opposite to an aperture along the longitudinal direction of one semicylindrical body within said body and laminating and imposing surplus length housing cases on a surplus length housing case supporting base on the surface which is on an upper side at the time if handling the connecting base, then dispersedly housing the respective optical fibers therein. CONSTITUTION:The connecting bar 17 is connected to both cable gripping fittings 15 respectively via curved type auxiliary connecting plates 26 in such a manner that said bar exists on the deep side opposite to the aperture along the longitudinal direction in one of the semicylindrical bodies 2, 3. The surplus length housing case supporting base 28 is fixed to the connecting bar 17 on the face of the one semicylindrical body opposite to the aperture along the longitudinal direction thereof. The plural surplus length housing cases 31 are laminated on the surplus length housing case supporting base 28 and are supported freely removably by supporting bars. The connecting bar 17 is thereby prevented from getting in the way of operation. Since the surplus length parts 24A of the respective optical fibers 24 are dispersedly housed in the plural surplus length housing cases, the handling of the fibers is facilitated without having the need for touching the unnecessary optical fibers 24.

Description

Detailed Description of the Invention [Industrial Application Field] As shown in FIGS. 7 to 13, a conventional optical fiber cable closure has a cylindrical sleeve 1, and the sleeve 1 has a semi-cylindrical shape. The bodies 2.3 are faced with their longitudinal openings, and a sealing material 4 is interposed between the 7 flange 2A and 3A, and reinforcing material 5.6 is provided on the surface of both the 7 flange 2A and 3A. It has a structure that is airtightly connected by applying it and tightening 7 bolts. End plate mounting grooves 8 are provided on the inner surface of both ends in the longitudinal direction of the sleeve 1, and rubber end plates 9 are fitted into each end plate mounting groove 8. It is sealed airtight. A cable through hole 11 through which the optical fiber cable 10 passes is provided in the center of each end plate 9, and a sealing washer 12 is interposed in the cable through hole 11 to surround the optical fiber cable 10, thereby airtightly sealing it. There is.

The end plate 9 is also divided into two parts, which are airtightly connected by a tightening ring 13 and a bolt 14. Cable gripping fittings 15 are disposed on both sides of the sleeve 1 and are fastened to the outer periphery of the optical fiber cable 10 inserted into the sleeve 1. These cable gripping fittings 15 are also divided into two parts and connected with bolts 16. Both cable gripping fittings 15 are connected by a pair of left and right connecting rods 17 at positions corresponding to the openings along the longitudinal direction of the semi-cylindrical body 2.3. Each connecting rod 17 is attached to the cable gripping fitting 15 with a bolt 18. On both connecting rods 17@, a semi-cylindrical extra length storage shell 19 projects toward the semi-cylindrical body 2 side and is suspended and supported by bolts 20. Extra length storage shell 1
At the longitudinal center of 9 is a tension member fixing device 2.
1 is permanently installed. Further, on both edges of the opening along the longitudinal direction of the extra length storage shell 19, a pair of notches 22 are provided at positions near both ends in the longitudinal direction. Corresponding to these notches 22, arc-shaped extra length guides 23 are arranged with their convex sides protruding into the semi-cylindrical body 3. The extra length guide 23 is supported by fitting the locking protrusions 23 at both ends in the arcuate direction into the notch 22 and being prevented from coming out by the connecting rod 17. In the space surrounded by the extra length storage shell 19 and the extra length guide 23, there is an optical fiber core 2
An extra length storage sheet 25 made of Musheet, a film that collectively stores the extra length portions 24A of 4, is rolled up into a spiral shape and stored.

[Problems to be Solved by the Invention] However, in such a structure, the connecting rods 17 are provided on both sides in the width direction of the opening along the longitudinal direction of the semi-cylindrical body 19, and these connecting rods 17 have Since the extra length storage shell 19 is attached hanging down, the working direction is limited to only from above the frontage along the longitudinal direction of the extra length storage shell 19, which makes it difficult to sort the optical fiber core 24. There was a point. In addition, since the extra length portions 24A of the optical fiber cores 24 are collectively wrapped and stored in one extra length storage sheet 25, it is impossible to take out the optical fiber cores 24 one by one, and maintenance etc. In this case, the optical fiber core [124], which does not need to be touched, must also be touched, which poses a problem that can cause trouble. Further, the extra length portion 24Δ of the optical fiber core wire 24 is wound inwardly along the inner periphery of the extra length storage shell 19 and the extra length guide 23 using the repulsive force of the core wire 24, so that the extra length portion 24Δ of the optical fiber core wire 24 is 0. In the case of the optical fiber core 24 having a small diameter such as 25veφ or the optical fiber core 24 having a stiff coating such as a silicon coating, there is a risk of increased loss and breakage, and there is a problem that it cannot be used.

An object of the present invention is to provide a closure for an optical fiber cable that is easy to handle, can be applied regardless of the type of optical fiber core, and can handle the core without adversely affecting other cores.

[Means for Solving the Problems] A detailed explanation of the present invention for achieving the above object is as follows.

The first invention of the present application includes a sleeve formed by facing each other and airtightly connecting semi-cylindrical bodies, and a pair of rubber end plates having a cable through hole in the center and airtightly closing both ends of the sleeve. and a pair of cable gripping fittings disposed on both sides of the sleeve to grip the optical fiber cable, and a connecting rod interconnecting both the cable gripping fittings. The connecting rod is connected to both the cable gripping fittings via bent connecting auxiliary plates, respectively, so that the connecting rod is located on the back side facing the opening along the longitudinal direction of one of the semi-cylindrical bodies, and An extra length storage case support is fixed to the connecting rod on the side facing the opening along the longitudinal direction of the cylindrical body, and a plurality of extra length storage cases are stacked on the extra length storage case support. It is characterized in that it is removably supported by a support rod.

- The second invention of the present application includes a sleeve formed by facing semi-cylindrical bodies and connected airtightly, and a pair of rubber ends having a cable through hole in the center and airtightly closing both ends of the sleeve. An optical fiber cable closure comprising a face plate, a pair of cable gripping fittings disposed on both sides of the sleeve to grip the optical fiber cable, and a connecting rod interconnecting both cable gripping fittings, The connecting rod is connected to both the cable gripping fittings via bent connecting auxiliary plates, respectively, so that the connecting rod is located on the back side facing the frontage along the longitudinal direction of one of the semicylindrical bodies, and An extra length storage case support is fixed to the connecting rod on the side facing the opening along the longitudinal direction of the semi-cylindrical body,
A plurality of extra-length storage cases are stacked on the extra-length storage case support base and are removably supported by support rods, and a rising portion is provided on one side in the width direction of the extra-length storage case support base, At the tip of the rising part, there is a lid with a hinge at m'+m.
One end of a band for binding the stack of extra-length storage cases is fixed to the bottom surface of the extra-length storage case support base, and one end of the band that binds the stack of extra-length storage cases is fixed to the bottom of the extra-length storage case support base, and the lid is attached on the side opposite to the side where the hinge is provided. A band temporary locking device for temporarily locking the other end of the band is provided on the surface.

[Function 1] When configured as in the first invention, when the upper semi-cylindrical body is removed, the connecting rod exists under the stack of extra length storage cases in the lower semi-cylindrical body, so that The connecting rod does not get in the way of work. Since there are a plurality of extra length storage cases and the optical fibers are housed in a distributed manner, the desired optical fibers can be handled without touching the optical fibers that do not need to be tampered with.

When configured as in the second invention, in addition to the effects of the first invention described above, the effect of the band can also be obtained.

That is, when the extra length storage case above the target extra length storage case is moved onto the evacuated lid, the band can fix the extra length storage case on the lid side to the lid, You can store it so that it does not interfere with your work.

[Embodiments] Examples of the present invention will be described in detail below with reference to FIGS. 1 to 6. Note that portions corresponding to those in FIGS. 7 to 13 described above are designated by the same reference numerals. In the optical fiber cable closure of this embodiment, the connecting rod 1
7 are connected to both sides through bent connecting auxiliary plates 26, respectively, so that they are located on the back side (lower side) of the semi-cylindrical body 3 on the one side (lower side), facing the opening along the longitudinal direction. It is connected to a cable gripping fitting 15 using a bolt 16.

The bent connecting auxiliary plate 26 includes a horizontal first portion 26A connected to the cable gripping fitting 15, and a first portion 26A connected to the cable gripping fitting 15.
A second portion 26B that falls down from 6A, and a third portion 26C that changes direction horizontally from the lower end of the second portion 26B.
It is made up of.

A connecting rod 17 is fixed to the third portion 26G.

On the third portion 26G is a tension member fixture 21.
is fixedly installed, and the central tension member 27 of the optical fiber cable 10 is held and fixed. An extra length storage case support stand 28 is fixed on the surface of the connecting rod 17 on the side facing the opening along the longitudinal direction of one of the semi-cylindrical bodies 3. At the longitudinal center position of the support base 28,
A rising portion 28A is provided on one side of the support base 28 in the width direction. A hinge 130 is supported at the tip (upper end) of the rising portion 28A via a hinge 29 so as to be openable and closable. A plurality of extra length storage cases 3 are mounted on the extra length storage case support stand 28.
1 are placed in a stacked manner.

Each extra-length storage case 31 has a two-fold shape with a case body 32 and a lid part 33 connected by a hinge part 34 so as to be openable and closable.
It is mainly composed of a plastic molded product with a thickness of about 5gv+. The optical fiber core 24 is lightly pressed against the case body 32 by spongy clamps at the core wire introducing portions 35 on the left and right sides of the edge of the case body 32, and then the optical fiber 24 is held at the edge of the case body 32. The fiber connecting portion 36 is clamped and fixed by a locking protrusion 45 provided at the center of the portion, and the extra length portion 2 of each optical fiber core [124] on both sides of the fiber connecting portion 36 is fixed.
4A are each rounded to form a flat case body part 32.
These extra length portions 24A are held by a presser piece 37 provided on the case body 32 so as not to pop out. O-shaped locking slits 38 are provided at both ends of the case body 32 on the opposite side from the core wire introduction section 35 . Each extra length storage case 31 on the support stand 28 can be attached and detached by fitting the locking slits 38 into support rods 39 erected at both ends of the Q part of the support stand 28 on the opposite side from the rising part 28A. It is locked. On the lower surface of both ends in the longitudinal direction of the support base 28, one end 40A of a band 40 made of a fastener having a male hook portion and a female hook portion on both sides, such as Velcro (trade name), is attached to its female type. It is fixed with the hook part facing outward.

The band 40 is in the extra length storage case 31! The A-layer bodies are tied together, and the other end 40B is stacked on the above-mentioned one end of the lower surface of the extra-length storage case support stand 28, so that they are interconnected by connecting both the male and female hook portions. On the surface of 1130 opposite to 1129 is the other end 40 of the band 40.
In order to lock B, a band locking tool 41 made of Velcro tape with a male hook portion facing toward the surface is fixedly installed.

With this configuration, when the upper semi-cylindrical body 3 is removed, the opening along the longitudinal direction of the lower semi-cylindrical body 2 is entirely opened upward.

Further, in this state, since the connecting rod 17 exists under the stack of extra length storage cases 31, the connecting rods 17 do not interfere with handling of the extra length storage cases 31. Inside each extra length storage case 31, an extra length portion 2 of the optical fiber core 24 is stored.
Since the fibers 4A are housed in a dispersed manner, the desired optical fiber cores 1 and 24 can be handled without touching the optical fiber cores 24 that do not need to be tampered with. If you want to handle the lower extra length storage case 31 in the stacked body of extra length storage cases 31, put the unnecessary upper extra length storage case 31 on the back side of 1130 and open the lid 30 in the sixth position. By rotating 180 degrees as shown in the figure, the unnecessary upper excess length storage case 31 can be removed from the support base 28. The removed extra length storage case 31 is temporarily bundled on the back surface of the lid 30 by hanging the other end 40B of the band 40 and temporarily locking it to the band temporary locking tool 41, as shown in FIG. can be retained.

[Effects of the Invention] As explained above, according to the first invention of the present application, since the connecting rod is provided on the back side of one semi-cylindrical body, facing the opening along the longitudinal direction of the semi-cylindrical body, This has the advantage that the connecting rod does not get in the way of handling the extra length storage case. In addition, the extra length storage cases are stacked and placed on the extra length storage case support stand provided on the upper surface when handling the connecting rod,
Since each optical fiber core is distributed and stored in these extra length storage cases, there is an advantage that the desired optical fiber core can be handled without touching the optical fiber core that does not need to be handled. Furthermore, with the extra length storage case stacked and supported on the support stand, the extra length can be stored without putting a burden on the optical fiber core.

Further, according to the second invention of the present application, a band with one end fixed to the extra length storage case support base is used, and a band temporary locking tool for temporarily locking the other end of the band is provided on the lid. When you want to handle the extra length storage case that exists on the lower part of the stack of long storage cases, you can place the unnecessary extra length storage case above it on the back of the lid! With the band, the extra length storage case can be frozen onto the lid, which improves workability, and has the effect of allowing temporary storage without applying unnecessary tension to the optical fiber core inside the extra length storage case. In addition to the effects of the first invention described above, further advantages can be obtained.

[Brief explanation of the drawing]

1 and 2 are a partially longitudinal side view and a partially longitudinal plan view of an embodiment of the closure according to the present invention, and FIG. 3 shows the internal structure of the closure of this embodiment with the sleeve removed. A perspective view, FIG. 4 is a developed plan view of the extra length storage case used in this embodiment, and FIGS. 5 and 6 are a side view and a part of the extra length storage case showing the stacked storage state of the extra length storage case in this embodiment. 7 and 8 are a partially vertical plan view and a partially vertical side view of a conventional closure, and FIG. The right side view of the figure, Figure 16 is X-X of Figure 9! ! Cross section, 1st
Figure 1 is a perspective view of a conventional glue O-jar with the sleeve removed; Figure 12 is a perspective view of a conventional excess length storage sheet;
FIG. 3 is a cross-sectional explanatory view showing the storage state of a conventional surplus length storage sheet. DESCRIPTION OF SYMBOLS 1... Sleeve, 2, 3... Semi-cylindrical body, 4... Seal material, 9... End plate, 10... Optical fiber cable, 11... Cable through hole, 12... Sealing washer, 15... Cable grip fitting, 17... Connecting rod, 24... Optical fiber core wire, 26... Bent type connection auxiliary plate, 28... Extra length storage case support stand, 28A.
...Rising part, 29...Hinge, 30...Lid, 31.
... Extra length storage case, 36 ... Core wire connection section, 38 ...
- Locking slit, 39... Support rod, 40... Band, 41... Band temporary locking tool.

Claims (2)

[Claims] (1) A sleeve formed by facing each other and airtightly connecting semi-cylindrical bodies, a pair of rubber end plates having a cable through hole in the center and airtightly closing both ends of the sleeve, and an inside of the sleeve. A closure for an optical fiber cable comprising a pair of cable gripping metal fittings disposed on both sides of the optical fiber cable to grip the optical fiber cable, and a connecting rod connecting the two cable gripping metal fittings to each other, wherein the connecting rod is attached to one of the cable gripping metal fittings. connected to both cable gripping fittings via bent connecting auxiliary plates, respectively, so as to be located on the back side facing the opening along the longitudinal direction of the semi-cylindrical body; An extra-length storage case support is fixed to the connecting rod on the side facing the opening along the connecting rod, and a plurality of extra-length storage cases are stacked on the extra-length storage case support and are connected to the support rod. A closure for an optical fiber cable characterized by being supported in a detachable manner. (2) A sleeve formed by facing each other and airtightly connecting semi-cylindrical bodies, a pair of rubber end plates having a cable through hole in the center and airtightly closing both ends of the sleeve, and an inside of the sleeve. A closure for an optical fiber cable comprising a pair of cable gripping metal fittings disposed on both sides of the optical fiber cable to grip the optical fiber cable, and a connecting rod connecting the two cable gripping metal fittings to each other, wherein the connecting rod is attached to one of the cable gripping metal fittings. connected to both cable gripping fittings via bent connecting auxiliary plates, respectively, so as to be located on the back side facing the opening along the longitudinal direction of the semi-cylindrical body; An extra-length storage case support is fixed to the connecting rod on the side facing the opening along the connecting rod, and a plurality of extra-length storage cases are stacked on the extra-length storage case support and are connected to the support rod. The extra length storage case is removably supported, and a rising portion is provided on one side in the width direction of the extra length storage case support, and a lid is supported at the tip of the rising portion so as to be openable and closable via a hinge. One end of a band for binding the stack of extra length storage cases is fixed to the bottom of the support base, and the other end of the band is temporarily fixed to the surface of the lid on the opposite side to the side where the hinge is provided. A closure for an optical fiber cable, characterized in that it is provided with a band temporary locking tool.