JPH09178993A - Spacer connection jig for optical fiber cable - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a connection jig for safely and easily connecting the spacer of an optical fiber cable. SOLUTION: A connection tool main body 7 is constituted by oppositely arranging a pair of semi-cylindrical members 8 for which plural projected lines 10 are projectingly provided at fixed intervals on an inner peripheral surface and connecting end parts on one side by a hinge and an engagement tightening means composed of a hooking piece 12 in a rectangular plate shape or the like and a hook-like member 13 is provided on the end parts on a non-connected side of the connection tool main body 7. Then, by fitting the connection tool main body 7 on the outer periphery of the spacer for which the end parts are abutted and arranged and tightening it by hooking the hooking piece 12 to the hook-like member 13, the connection tool main body 7 is closed and the spacer is strongly connected and fixed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a spacer connecting jig for an optical fiber cable, and more particularly to a connecting jig for connecting spacers of a spacer type optical fiber cable to each other.

[0002]

2. Description of the Related Art In recent years, so-called spacer type optical fiber cables have been widely used as communication cables. As shown in FIG. 7, this has a tensile strength member 1 such as a steel wire in the center and a plurality of grooves 2 in a spiral shape on the outer circumference. The fiber core wire 4 is housed, and the outer circumference of the spacer 3 is provided with a presser winding 5 and a jacket 6 is further formed on the presser winding 5, so that the optical fiber core wire 4 which is weak against lateral pressure is protected by the spacer 3. There is.

In the process of manufacturing such an optical fiber cable, in order to manufacture it more efficiently, two spacers 3 are used.
May be required to be connected to each other, and the spacers 3 are also required to be connected at the time of the rear branch of the cable.

Conventionally, in order to connect the spacers 3 made of steel wire as the tensile strength member 1 to each other, the main body of the spacer 3 made of high-density polyethylene or the like is heated and melted by a burner to be removed, and the exposed tensile strength is then removed. A method has been adopted in which the members 1 are intertwined with each other and bonded, and an insulating tape such as polyethylene is wound around the members 1 as necessary.

[0005]

However, in such a conventional spacer connecting method, since the means for heating and melting by the burner is used to remove the spacer 3 main body, not only is the work time consuming, There is a problem that it is not preferable in terms of work safety.

The present invention has been made in order to solve such a problem, and in order to efficiently manufacture an optical fiber cable and perform post branching, the spacers of the optical fiber cable can be connected safely and easily. It is an object of the present invention to provide a connection jig for doing this.

[0007]

A jig for connecting a spacer of an optical fiber cable according to a first aspect of the present invention is a jig for connecting a spacer of an optical fiber cable. A pair of semi-cylindrical members provided with means are arranged so as to face each other so as to form a cylindrical shape, and one end portion of the semi-cylindrical member is openably and closably connected, and a non-coupling side end of the connection body And an engaging and fastening means attached to the portion, and the connector main body is configured to be fitted on the outer periphery of the spacer arranged so as to abut the ends.

Further, a spacer connecting jig for an optical fiber cable according to a second aspect of the present invention is a jig for connecting a spacer for an optical fiber cable, wherein an inner peripheral surface has locking means for the spacer. A pair of connecting member main bodies formed by connecting a pair of arcuate cross-section members opposed to each other such that they can be opened and closed at lengthwise ends, short wires connecting these connecting device main bodies, and the connection A ring-shaped screw body screwed to the outer periphery of the tool body so as to be reciprocally movable in the axial direction, and the spacer inserted into the opening end of the connector body is formed by the pair of arc-shaped members in cross section. It is characterized in that it is configured to be sandwiched.

In the connecting jig according to the first aspect of the present invention, the connecting tool main body having a structure in which a pair of semi-cylindrical members are openably and closably connected at one end should be connected such that the ends are abutted against each other. The spacer is fitted around the outer periphery of the spacer, and is engaged and fastened by the engaging and fastening means attached to the end portion on the non-connection side to be closed.
Then, in this state, the spacer is securely locked and fixed to the connector body by the locking means provided on the inner peripheral surface of the semi-cylindrical member that constitutes the connector body without the spacer being displaced or pulled out.

In the connection jig of the second invention,
An end of a spacer to be connected is inserted into an open end of a connector body that has a shape in which a pair of arcuate members in cross section are connected so as to be openable and closable, and that are connected to each other via a short wire. Then, the ring-shaped screw body screwed to the outer periphery of the connector body is rotated, and is moved forward along the outer periphery of the connector body toward the tip opening portion, whereby the diameter of the opening portion is reduced and the cross section circle The end portion of the spacer is firmly held by the arc-shaped member. Further, at this time, the spacer is firmly locked and fixed by the locking means provided on the inner peripheral surface of the member having an arcuate cross section without being displaced or pulled out.

As described above, by using the connecting jig of the present invention, the spacers of the optical fiber cable can be surely connected in a short time, the work environment is not polluted by wastes, and the connection work is further prevented. Safety is improved.

[0012]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a perspective view showing an embodiment of a spacer connecting jig for an optical fiber cable according to the present invention, and FIG. 2 is a side view.

In the drawings, reference numeral 7 indicates a connection tool body,
In this structure, a pair of semi-cylindrical members 8 each having a shape obtained by dividing a cylindrical body into two in the axial direction are arranged so as to face each other so as to have a cylindrical shape, and one end is rotatably connected by a hinge 9. Have. On the inner peripheral surface of the semi-cylindrical member 8, a plurality of projections 10 having thin tips and sharp blade edges are provided so as to extend in the circumferential direction of the semi-cylindrical member 8 at regular intervals. Therefore, when the connector body 7 is fitted on the outer periphery of the spacer, the tips of the ridges 10 bite into the body of the spacer made of polyethylene or the like to lock it and prevent the spacer from pulling out. Has become. Further, an engagement fastening means 11 described below is provided at the end portion on the non-coupling side (opening side) of the connector main body 7. That is, a rectangular plate-shaped or ring-shaped hooking piece 12 is attached to one end of the semi-cylindrical member 8 (upper semi-cylindrical member 8a) that constitutes the connector main body 7, while the other (lower semi-cylindrical member 8a) is attached. The hook-shaped member 13 is attached to the end of the strip-shaped member 8b),
Is hooked on the hook-shaped member 13 and is fastened in a closed manner, so that the open end of the connector main body 7 is closed.
In addition, the hook-shaped members 13 are provided in a plurality of stages at different positions, and the hooking members 1 correspond to changes in the outer diameter of the spacer.
It is possible to change the step of the hook-shaped member 13 that engages the two and engage and fasten them at the optimum position.

According to the connecting jig of the embodiment thus constructed, as shown in FIG. 3, the connector main body 7 is provided on the outer circumference of the spacer 14 of the optical fiber cable arranged so as to abut the ends. The fitting main body 7 is fitted by engaging the fastening piece 12 attached to the upper semi-cylindrical member 8a with the hook-like member 13 attached to the lower semi-cylindrical member 8b and fastening them. The open side end of the spacer 14 is closed, and the spacer 14 is firmly connected and fixed together with the locking effect of the ridge 10 provided on the inner peripheral surface.

Next, another embodiment of the spacer connecting jig of the present invention will be described.

In this embodiment, as shown in FIGS. 4 and 5, a pair of members 15 having arcuate cross-sections, which are arranged so as to face each other, are connected at their lengthwise ends so as to be openable and closable. The pair of connector main bodies 16 are connected to each other via a short wire 17 fixed to the connecting end. And, on the inner peripheral surface of each of the circular-arc members 15 in cross section,
A plurality of protrusions 18 having thin tips and sharpened like blades are provided so as to extend in the circumferential direction of the arc-shaped member 15 at a constant interval, and the connector body 16 sandwiches the end portion of the spacer. At this time, the tips of the protrusions 18 bite into the body of the spacer to hold it in place, so that the spacer cannot be pulled out. Further, a large-diameter ring-shaped screw body 19 having a thread groove formed on the inner peripheral surface is provided on the outer periphery of the connector main body 16.
It is fitted by screwing the thread groove into the thread formed on the outer periphery of the connector body 16, and by rotating this screw body 19 around the connector body 16 and reciprocating in the axial direction, The diameter of the open end of the connector main body 16 can be adjusted.

The connecting jig of the embodiment thus constructed is inserted between the spacers of the two optical fiber cables as shown below to surely connect the spacers.

A pair of arcuate members in cross section sandwich the spacer end portion of the optical fiber cable from above and below, for example. That is, as shown in FIG. 6, the ends of the two spacers 20 to be connected are respectively connected to the connector main body 16
Of the screw body 19 after being inserted into the opening end of the
The end of the spacer 16 is firmly sandwiched by rotating the connector 16 along the outer peripheral surface of the connector body 16 toward the tip opening (indicated by an arrow) to reduce the diameter of the opening end of the connector body 16. To be done. Further, the spacers 20 allow the spacers 20 to be provided by the protrusions 18 provided on the inner peripheral surface of the member 15 having an arcuate cross section.
Since the spacer 20 is engaged with the spacer 6, the spacer 20 is securely connected without being displaced or pulled out.

As described above, by using the connecting jigs of the above embodiments, the spacer 20 of the optical fiber cable can be surely connected in a short time, and the main body of the spacer 20 needs to be heated and melted to be removed. Therefore, the connection workability is good and the safety is improved, and the work environment is not polluted by waste materials.

[0021]

As described above, according to the connecting jig of the present invention, the spacers of the optical fiber cable can be reliably connected to each other in a short time. It can be manufactured efficiently and post-branching can be performed.

Further, according to the present invention, since it is not necessary to heat and melt and remove the spacer body made of polyethylene or the like, workability is improved and safety is improved, and the work environment is polluted with waste materials. There is no.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of a spacer connecting jig for an optical fiber cable according to the present invention.

FIG. 2 is a side view of the spacer connecting jig of the same embodiment.

FIG. 3 is a perspective view for explaining a usage mode of the spacer connecting jig of the embodiment.

FIG. 4 is a front view showing another embodiment of the spacer connecting jig of the present invention.

FIG. 5 is a side view from the direction A of the connector main body according to the second embodiment.

FIG. 6 is a front view for explaining a usage mode of a spacer connecting jig according to a second embodiment.

FIG. 7 is a cross-sectional view showing an example of a spacer type optical fiber cable.

[Explanation of symbols]

 7, 16 ...... Connector body 8 ...... Semi-cylindrical member 9 ...... Hinge 10,18 ...... Ridge 12 ...... Latching piece 13 ...... Hook member 14, 20 ...... Spacer 15 ………… Circular section member 17 ………… Wire 19 ………… Ring-shaped screw

Claims (2)

[Claims] 1. A jig for connecting a spacer of an optical fiber cable, wherein a pair of semi-cylindrical members provided with locking means for the spacer on the inner peripheral surface are opposed to each other in a cylindrical shape. The connector body is arranged and is connected at one end so as to be openable and closable, and an engagement fastening means attached to a non-connecting side end of the connector body. A spacer connecting jig for an optical fiber cable, wherein the spacer connecting jig is configured to be fitted on the outer periphery of the spacers arranged in abutment with each other. 2. A jig for connecting spacers of an optical fiber cable, wherein a pair of arc-shaped cross-section members having locking means for the spacers on the inner peripheral surface and arranged to face each other are provided in the longitudinal direction. A pair of connector bodies that are openably and closably connected at their ends, a short wire that connects these connector bodies, and a ring shape that is axially reciprocally screwed onto the outer periphery of the connector body. And the spacer inserted into the opening end of the connector body is configured to be sandwiched by the pair of arcuate members having a cross-section. Ingredient