JPH08334642A - Case for connecting optical cable - Google Patents

Abstract

PURPOSE: To provide an inexpensive structure with which the deformation of a cable juncture housing body is prevented, safety and hermeticity are enhanced and assembly workability is greatly improved. CONSTITUTION: A cylindrical case 2 enclosing the circumference of the optical cable juncture 1 is freely expandably constituted by having a hinge part 3 embedded in an axial direction and divided end edges 4, 4 disposed to face this hinge part 3. Side wall parts 5 are integrally formed at both end faces of the cylinder case 2 and end faces sealing member 6 to be fitted and inserted with the cable are freely attachably and detachably fitted and disposed at the central parts of the side wall parts 5. Both end edges of the cylinder case 2 are fitted and disposed at a bottom plate 7 and end face sealing members 6 are attached and held in the cylindrical case 2. As a result, the extremely rapid execution of the work to cover and house the cable juncture is made possible and the hermetic sealing of high reliability is assured by compressing the sleeve uniformly over the entire periphery at the few tightening points. In addition, the posture of the case is stabilized by omission of end face plate.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical cable connecting case for protecting and housing a connecting portion for connecting and branching a communication cable of an optical cable.

[0002]

2. Description of the Related Art Generally, a cable connecting device uses a container for enclosing and protecting a connecting portion of the cable. The container is a vertically split cylindrical case, and both ends of the case are closed to close the cable. It is known to have a structure that consists of an end plate that inserts through, and connects the divided surfaces of the case with each other and connects them with a fixing means such as a mounting screw or a band to tightly integrate them and keep the cable connection part including the connector in an airtight state. ing.

However, the housing of this cable connecting portion is often a split type because it is necessary to expose the inside for maintenance work such as cable connection or branch wiring for maintenance and inspection. When the split type is used, the case is prevented from being deformed. The components of the case are tightly coupled to each other in order to maintain rigidity and prevent the ingress of moisture, moisture and dust.
And the connection with the cable insertion part must also be tight, and the cable connection part container provided with the airtight material is complicated and expensive to manufacture, costly, and there is also a problem in terms of durability,
There was a problem that management of tightening force and assembly workability became complicated to ensure airtightness. The present invention is intended to eliminate these conventional drawbacks, prevents deformation of the housing of the cable connection portion, and enhances safety and airtightness, and
It is an object of the present invention to provide a cable connection case that can significantly improve the assembly workability in a simple and inexpensive form.

[0004]

SUMMARY OF THE INVENTION According to the present invention, a cylindrical case that encloses the periphery of an optical cable connecting portion is provided with a hinge portion arranged along the axial direction, and a divided edge portion provided opposite to the hinge portion. And a side wall portion is integrally formed on both end surfaces of the tubular case, and an end face seal member for inserting a cable is detachably fitted and arranged in the central portion of the side wall portion. At the same time, both end edges of the tubular case are fitted and arranged on the bottom plate, and the end face seal member is fitted and held in the tubular case.

[0005]

Operation: Remove the case from the bottom plate, connect the cables to the cable grips on the bottom plate, grind the cable jacket in the circumferential direction, fit the spacers, and then attach the tension member grips to the mounting bolts. Tighten evenly with. Then, the cable is inserted into the cable fitting hole of the end face seal member, the end face seal member is placed on the cable, and both ends of the case are expanded around the hinge portion to the end face seal member to the case side wall. The recessed groove of the part is fitted and connected, and further, both end edges of the case are fitted to the bottom plate, and the end face seal member is also closely fixed, so that the mounting posture is stable and strong, and the lock mechanism provided in the case By tightening and locking, the sealing performance is greatly improved and it can be used safely.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described with reference to the examples shown in FIGS. 1 to 8. A cylindrical case 2 that encloses the periphery of an optical cable connection portion 1 has a hinge portion 3 provided along an axial direction, and the hinge portion 3. And the divided edge portions 4 and 4 arranged so as to face each other, are configured to be expandable, and the side wall portion 5 is integrally formed on both end faces of the cylindrical case 2, and the side wall portion 5 has a central portion. The end face seal member 6 for inserting and inserting the cable is detachably fitted and arranged, and the both end edges 4 and 4 of the tubular case 2 are fitted and arranged on the bottom plate 7, that is, the concave groove of both end edges 4 is formed. The flange portion 18 of the bottom plate is fitted to the bottom plate, and the hook-shaped protrusions of both end edge portions 4 are hooked on the locking projections of the bottom plate 7 so that they can be closely adhered to each other, and the end face seal member 6 is attached to the cylindrical case 2 It is a case for connecting the optical cable that is fitted and held in the. The tubular case 2 is a cylindrical body or a rectangular tubular body, and the side wall portion 5 thereof has a divided gap portion 9 in which a fitting groove 8 is formed in the vertical direction, and side plates 1 protruding from both ends of the bottom plate 7.
A fitting recess 10 for fitting 1 is provided so that the outer peripheral edge of the end face sealing member 6 can be contacted and integrated with high density.

The end face seal member 6 is an elastic plate member having an optical cable fitting hole 12, an aerial wiring or base line cable fitting hole 13, and a support wire fitting hole 14. Slits 15 communicating with the fitting insertion hole from the peripheral end surface of the member are provided so as to be freely opened, and wiring such as a cable is easily inserted. After the insertion, the slits are in close contact with each other and the sealing property is appropriately maintained. .

Further, the end face seal member 6 is provided with a ring-shaped gasket portion 16 having concave and convex lines on the inner peripheral surfaces of the fitting insertion holes 12, 13, 14 for the cable and the like, and the optical cable fitting insertion hole 12 is a through hole. However, a separable thin-walled cap portion 17 may be provided as necessary and cut off to be used as a through hole.

As the bottom plate 7, side plates having recessed grooves for fitting the lower end of the end face sealing member 6 are erected at both ends, and the side plates are provided with the divided edge portions of the cylindrical case. It is preferable to use the one in which the flange 18 and the projecting piece 18 ₁ fitted in the groove are provided so as to project in the horizontal direction and the vertical direction.

Incidentally, the fitting insertion hole 12 of the end face seal member 6
The trunk optical fiber is pierced through and is fixed by the cable holding metal fitting 21, and the tension member of the cable is connected and connected to the tension member holding metal fitting 20 of the support clamp. The split case 2 is a cylindrical housing,
One side is split along the axial direction so that it can be divided into two parts with a separate joining surface. It is made of synthetic resin, such as PP resin or flame-retardant FRPP, and is butt-jointed to divide into two in the axial direction. A surface and end face sealing members 6 penetrating the cables on both sides of the cable connecting portion at both ends of the case 2 so that the end face sealing members 6 can be connected to the side wall portions 5 by tightening lock bars 22. Including the facing joint surface, the split joint surface of the case 2 is provided with a fitting groove 8 of a concave groove for fitting and holding a gasket, and an inner surface of the bottom plate 7 is composed of a holding piece along the outer circumference of the cable. Connection fitting 1 provided with a cable grip 21, a tension member grip 20 and an outdoor wire grip 23
9 may be fixedly installed, and if necessary, a band 24 having a fastener 25 composed of a screw may be removably wound around the outer periphery of the case 2, but the both end edges of the case and the bottom plate may be projected or recessed. Are fastened by one-touch by fitting with a corresponding member, or they are integrated with a fastener made of a screw on the outer periphery of the case so that the sealability at the separation surface can be improved and the connection can be made.

It should be noted that a rubber spacer or airtight tape is wound around the through hole formed by the cable fitting hole 12 or the like so that the outer peripheral surface of the cable 3 can be closely attached. . Also, case 2
A leg piece 26 is attached to the bottom plate 7.

In the embodiment shown in FIG. 9, the end face seal member 6 is provided with a cable fitting insertion hole 12, a base line fitting insertion hole 13, and a slit 15 for a support wire fitting insertion hole 14 formed by concave and convex portions to provide a hermetic seal. It is a raised form.

As the bottom plate 7, as shown in FIG. 10, reinforcing ribs 27 are provided on the bottom surface and side plates 11 and 11 having concave grooves 28 into which the end face seal members 6 are fitted at both ends. Is erected, and the divided edge 4 of the case side wall 5 is
Are formed in a hook-shaped projection or a concave groove so that they can be closely attached and integrated. Further, a raised strip portion is formed on the inner surface side of the bottom plate 7,
The cable gripping metal fittings 21 and the tension member gripping metal fittings 20 are attached to both ends of the bottom plate, and a storage mounting metal fitting 30 having a pair of rings 29 is provided in the central portion, and a large number of core wire cord storage trays 31 are provided. The core wire that is dropped into the outdoor wire gripping fitting 23 can be gripped. The cord storage tray 31 is a case in which a lid 33 and a receiving plate 34 that can be opened and closed are provided in a pocket-shaped tray as shown in FIG. 11, and is provided with tongues 35 and 36 for locking the cord and a ring 29 is fitted. A through hole 39 to be inserted is formed with a slit 38.

In the embodiment shown in FIG. 12, the cylindrical case is an example of a rectangular tube, and the case is a high-density storage case. The internal structure includes an outdoor wire gripping metal fitting 23, and an extra length for accommodating a storage sheet into which a fiber core wire is inserted. Shelf storage type cord storage unit 23 ₁ and connector holder 23 _{2 that} can store a large number of storage cases
It has a configuration with.

Further, in FIG. 13, a cylindrical case 42 for enclosing a member including an optical cable connecting portion is provided with an openable / closable lower opening lid body connected by a hinge portion 43 provided along the axial direction. A case configuration in which a split case includes a detachable buckle 32 for tightening the split joint edge portions 44, 44, and is detachably fitted to a fixed mounting member 37 of a member installed inside the case. It is what In this two-part case, a suspending metal fitting 41 having a support wire fitting insertion hole 40 formed therein is projected so that the case 42 can be hung from the support wire. The support member of the cable connection mechanism inside the case is It has the same configuration as the previous example. Also, the lids may be connected by a hinge portion having an upper opening configuration (not shown).

In the embodiment shown in FIG. 14, the rectangular tubular case 52 is a two-piece case which is connected by a hinge portion 53 provided along the axial direction so as to be openable and closable. I can do it. The cable fitting hole 50 and the support wire fitting hole 51 are formed in the side wall of the case, and the supporting member of the cable connecting mechanism is a high density container for intermediate rear branch as shown in FIGS. 15 and 16. Therefore, a case method is provided in which the outdoor wire gripping metal fitting 23 is provided and a plurality of extra length storage trays 31 for accommodating the fiber core wires are accommodated in parallel (see FIG. 1).
5) or adopting the structure of the shelf accommodation system (FIG. 16) for easy handling.

In the examples of FIGS. 17 to 19, the bottom plate 63 is detachably fitted to the bottom surface of the semi-cylindrical case 62, and a plurality of reinforcing ribs 61 are provided on the inner peripheral surface of the case 62 at intervals. In addition, the end face seal member 64 and the end face plate portion 65 are provided on the bottom plate 63. Further, the bottom plate 63 is fitted into a guide groove 66 formed on the edge of the case 62, and
And the bottom plate 63, the snap rails 69 and 68 that are connected to the bottom plate 63 in a straight line are provided with snaps 69 that can be engaged and disengaged so that they can be integrally fastened. Has been done.

A cable grip fitting 70 is fixed on the bottom plate 63 by a mounting piece 71 and connected to a cable grip fitting of the other end by a connecting rod 72. Further, without using the end face sealing member 64 or the like, a butt hole portion matching the cable shape is formed in the end face wall portion, and an uneven gasket is provided on the inner periphery of the hole portion to hold the cable and maintain watertightness. You can also do so.

[0019]

According to the present invention, a tubular case that encloses the periphery of an optical cable connecting portion is provided with a hinge portion arranged along the axial direction,
It is configured so as to be expandable by including a divided end edge portion provided opposite to the hinge portion, side walls are integrally formed on both end surfaces of the tubular case, and a cable is inserted and inserted in a central portion of the side wall portion. The end face seal member is detachably fitted and arranged, and both end edges of the tubular case are fitted and arranged on the bottom plate to fit and hold the end face seal member in the tubular case. The covering and accommodating work can be performed extremely quickly, and the entire circumference of the sleeve can be pressed uniformly with a small number of tightening points to ensure reliable sealing, and the omission of the end plate ensures a stable posture and good handling of the case. It helps to facilitate the assembly work, it can be easily and safely connected and fixed with the cable gripping tool, and the deformation of the housing of the cable connection part is prevented, which improves safety and airtightness, and greatly improves the assembly workability. Improved to Kill.

[Brief description of drawings]

FIG. 1 is a partially cutaway plan view showing an embodiment of the present invention.

FIG. 2 is a longitudinal sectional view taken along line AA of FIG.

FIG. 3 is a front view of the example of FIG. 1;

FIG. 4 is a vertical sectional view taken along the line BB in FIG.

FIG. 5 is a partially cut side view of the example of FIG.

6 is a vertical cross-sectional view taken along the line CC of FIG.

FIG. 7 is a vertical cross-sectional view taken along line D-D of FIG. 1 showing a separated state.

8A and 8B show an end face seal member of the example of FIG. 7, where FIG. 8A is a front view, FIG. 8B is a longitudinal sectional view, FIG. 8C is a left side view, and FIG.

9A and 9B show other examples of end face spacers, FIG. 9A is a front view, FIG. 9B is a left side view, and FIG. 9C is a top plan view.

FIG. 10 shows a bottom plate of the example of FIG. 7, (a) is a front view,
(B) is a plan view, (c) is a vertical sectional view taken along the line EE.
(D) is a bottom view and (e) is a partial vertical cross-sectional view taken along the line FF.

FIG. 11 shows a cable extra length cord storage tray,
(A) is a side view and (b) is a front view.

FIG. 12 shows another embodiment of the present invention, (a) is a front view and (b) is a partially cut side view.

13A and 13B show still another embodiment of the present invention, in which FIG. 13A is a front view, FIG. 13B is a partially cutaway side view, FIG. 13C is a front view in a developed state, and FIG. FIG. 3E is a vertical cross-sectional view, and FIG.

14A and 14B show another embodiment of the present invention, in which FIG. 14A is a front view in a developed state, FIG. 14B is a partially cut side view, and FIG.
A vertical sectional view taken along the line, (d) is a partially cut plan view.

FIG. 15 shows an internal structure of the case system of the example of FIGS. 13 and 14, (a) is a cut side view, and (b) is a plan view thereof.

FIG. 16 shows an internal structure of the rack accommodation system of the examples of FIGS. 13 and 14, (a) is a cut side view, and (b) is a plan view thereof.

FIG. 17 shows still another embodiment of the present invention, (a) is a partially cut plan view, (b) is a vertical cross-sectional view taken along line I-I,
(C) is a vertical cross-sectional view taken along the line JJ.

FIG. 18 (a) is a partially cut side view of the example of FIG.
(B) is a front view.

FIG. 19 is an exploded perspective view showing a fitted state of the case and the bottom plate of the example of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Optical cable connection part 2 Cylindrical case 3 Hinge part 4 Divided end edge part 5 Side wall part 6 End face seal member 7 Bottom plate 8 Fitting groove 9 Dividing gap part 10 Fitting recessed part 11 Side plate 12, 13, 14 Fitting insertion hole 15 Slit 16 Gasket part 17 Thin cap 21 Cable grip 31 Code storage tray

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Noriaki Hayashi 4-35-3 Yoyogi, Shibuya-ku, Tokyo ▲ our ▼ Yama Building Japan Recom Co., Ltd. (72) Inventor Hiroshi Yokosuka 1-5 Kiba, Koto-ku, Tokyo No. 1 in Fujikura Ltd. (72) Inventor Yasuhiro Itsuki 1-1-5 Kiba, Koto-ku, Tokyo Inside Fujikura Ltd.

Claims (6)

[Claims] 1. A cylindrical case that encloses the periphery of an optical cable connecting portion is provided with a hinge portion provided along the axial direction and a split end edge portion that is arranged so as to face the hinge portion, so that it can be expanded. And a side wall portion integrally formed on both end surfaces of the tubular case,
An end face sealing member for inserting and inserting a cable is detachably fitted and arranged in the central portion of the side wall portion, and both end edge portions of the tubular case are fitted and provided on a bottom plate to put the end face sealing member in the tubular case. A case for connecting an optical cable, which is fitted and held. 2. The tubular case is a cylindrical body or a rectangular tubular body, and a side wall portion thereof has a divided gap portion having a fitting groove formed in a vertical direction and side plates protruding from both ends of the bottom plate. The optical cable connection case according to claim 1, further comprising a fitting recess for fitting. 3. The end face seal member is an elastic plate member having an optical cable fitting hole, an aerial wiring or base line cable fitting hole, and a support wire fitting hole, and the periphery of the plate member. The optical cable connection case according to claim 1 or 2, further comprising slits that are opened from the end faces and communicate with the fitting insertion holes. 4. The end face seal member is provided with a ring-shaped gasket portion having a concavo-convex strip on the inner peripheral surface of a fitting insertion hole for a cable or the like, and a separable thin wall cap portion for the optical cable fitting insertion hole. The optical cable connection case according to item 3. 5. The bottom plate is one in which side plates having recessed grooves for fitting the lower ends of the end face sealing members are provided upright at both ends, and the side plates are provided with recesses at the divided edge portions of the tubular case. The optical cable connecting case according to claim 3 or 4, wherein the flange and the projecting piece fitted in the groove are provided so as to project in the horizontal direction and the vertical direction. 6. A two-piece openable and closable case in which a tubular case that encloses a member including an optical cable connection part is connected by a hinge part provided along an axial direction, and the split joint edge part. A case for connecting an optical cable, characterized in that it has a detachable buckle for tightening, and has a case configuration in which it is detachably fitted and arranged on a fixed mounting member of a member installed inside the case.