JPH1064354A - Protective cover for communication line - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a connecting part of a cover installed on a communication line supported on a suspension wire of a wire cable through a cable hanger from slipping out by impact or the like. SOLUTION: In a protective cover C for a communication line, a ring inserting hole 10 is arranged in an outside upper part close to the tip of a joint pipe 4, and a ring through hole 11 is bored in a lower end protrusive piece 8 so as to be opposed to the ring inserting hole 10, and a grip 12 is arranged on the joint pipe 4 in its upper part, and in a lower end protrusive piece 7 on the goose-necked protrusion 3 side peripherally arranged on a main body pipe 1, a ring through hole 13 is bored in a position to communicate with the ring through hole 11, on the one hand, a fastening ring 14 fitted to and installed on the joint pipe 4 is formed in a circular arc shape coincident with an outer diameter, and a lug piece is protrusively arranged on the outside of its lengthwise directional almost intermediate position, and an outward bending stopper piece is formed on one end, and expansive opening of the respective protrusive pieces 7 and 8 is checked, and connection of a fitting inserting pipe part 2 and the joint pipe 4 is made unseparable.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a communication line, such as a telephone line, installed between telephone poles, in particular, a communication line supported by a suspension line such as a wire cable via a cable hanger over a required length. The present invention relates to a communication line protection cover that is attached to a communication line to protect the communication line.

[0002]

2. Description of the Related Art Conventionally, this kind of communication line protection cover 10 is used.
0 is the joint pipe 101 as shown in FIG. 11 and FIG.
The projecting piece 10 is formed by a half-split cylindrical tube and
2 and 102, a plurality of reinforcing ribs 103 are protruded from the outer periphery of the joint pipe 101 at substantially equal intervals, and two adjacent reinforcing ribs 103 near the one end (left end) of the joint pipe 101 are provided.
A ring insertion hole 104 is formed by straddling a bar 104 ′ at the top of 103, and a large-diameter tube 105 is formed at the center of the joint tube 101. The main body tube 106
A protruding piece 1 at the lower divided end formed by a half cylindrical tube
07, 107, and the joint pipe 1 is provided at the end in the longitudinal direction.
01 is fixed, and the other end is provided with a gooseneck (not shown). Then, the gooseneck of the main body tube 106 is inserted into the joint tube 101 of another communication line protection cover 100 and the gooseneck portion is engaged with the large-diameter tube portion 105 of the joint tube 101, so that the joint tube 101 and another main body are separated. The pipe 106 is connected, and one end of an arc-shaped tightening ring 108 is connected to the ring insertion hole 104 of the joint pipe 101.
The joint tube 101 is rotated around the fastening ring 108 so that the joint tube 101 is fastened so that the protruding pieces 102, 102 provided at the divided ends are not opened.

[0003]

However, even when the joint pipe 101 is rotated around the tightening ring 108 as described above, a sufficient tightening force cannot be obtained, and an impact such as being blown by a strong wind or a gust during use. When receiving the joint pipe 101, the protruding pieces 102, 102 at the half-split end of the joint pipe 101 are expanded and the main pipe 10
6 was sometimes disconnected. SUMMARY OF THE INVENTION In view of such a conventional technique, an object of the present invention is to provide a communication line protection cover in which a tightening ring is particularly improved so that a connection between a joint pipe and a main pipe is not disconnected. .

[0004]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a long body tube formed in a half-cylindrical shape and having a gooseneck projection at one end in a longitudinal direction at one end in a longitudinal direction. At the end, a joint pipe for fitting the gooseneck-shaped projection is fixed, and at the longitudinal ends of the lower end of the main pipe and the joint pipe, projecting pieces are respectively provided outside the divided ends which are linearly divided so as to face each other. A ring insertion hole is projected from an upper portion of the communication line protection cover formed in a half-cylindrical shape on the outer side near the end of the joint pipe, and a ring through hole is formed on a protruding piece at the lower end so as to face the ring insertion hole. The handle was protruded from the joint pipe so as to be located at the top of the ring insertion hole and the ring through hole, and the main pipe was connected to the protruding piece at the lower end of the gooseneck-shaped projection provided around the main pipe. The ring through hole at a position that communicates with the ring through hole On the other hand, the fastening ring to be fitted to the joint pipe is formed in an arc shape corresponding to the outer diameter of the joint pipe, and a knob is protruded outside a substantially intermediate position in the longitudinal direction of the fastening ring. A stopper piece that is bent outward at one end of the tightening ring is formed, and another communication pipe is formed in the projecting piece of the main pipe and the coupling pipe by fitting another main pipe to the coupling pipe of the main pipe. After holding the knob of the tightening ring, the stopper piece of the tightening ring is inserted through the ring insertion hole and fitted around the joint pipe, and then the tightening ring is turned in the opposite direction. By moving the other end of the tightening ring through each communication hole and connecting the joint pipe to the main body, the joint between the joint pipe and the main pipe is prevented from coming off due to an impact. Further, the stopper is provided at a certain interval from the stopper piece provided on the tightening ring, and one side of the stopper is provided with a projection having a gentle slope so that the other side functions as a double stopper.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments according to the present invention will be described below with reference to the drawings. FIG. 1 is a side view of a communication line protective cover according to the present invention, and FIG. 2 is a perspective view of a left end portion thereof and a tightening ring. In FIG. 1, reference numeral 1 denotes a main body tube having a required length, and a fitting / inserting portion 2 having a larger diameter than the main body tube 1 is connected to one end in the longitudinal direction of the main body tube 1. The gooseneck-shaped projection 3 is formed in a circular shape, and the main body tube 1 is formed.
The joint pipe 4 is integrally connected to the other end in the longitudinal direction to form a communication line protection cover C.

The joint pipe 4 has a larger diameter than the fitting section 4a at the inner end of the fitting section 4a having an inner diameter for fitting the large-diameter fitting insertion section 2 formed at one end of the main body pipe 1 without any gap. And the body tube 1
The large-diameter tube portion 5 for fitting and locking the gooseneck-shaped projection 3 is formed. A plurality of reinforcing ribs 6 project from the outer peripheral surface of the joint pipe 4.

The entire body tube 1 of the communication line protective cover C is formed into a half-segmented tubular shape with its lower end linearly divided in the longitudinal direction, and protruding pieces 7, 7 are provided opposite to the divided edges. Further, protruding pieces 8, 8 are provided opposite to the divided edges of the joint pipe 4 with an interval sandwiching the protruding pieces 7, 7 of the fitting / inserting tube portion 2 of the main pipe 1. The joint pipe 4 has two reinforcing ribs 6, 6 near the tip.
The bar 9 is straddled on the upper end of the
Are formed, and ring through holes 11, 11 are formed in the protruding pieces 8, 8 at the lower ends so as to face the ring insertion holes 10. Further, a handle 12 is formed on the joint pipe 4 so as to protrude so as to be located above the ring insertion hole 10 and the ring through holes 11, 11. Further, the projecting pieces 7, 7 at the lower end of the gooseneck-shaped projection 3 provided around the main pipe 1 are provided on the projecting pieces 8, 8 of the joint pipe 4 when another main pipe 1 is connected to the joint pipe 4. Ring through holes 13, 13 are formed at positions communicating with the ring through holes 11, 11, respectively.

Reference numeral 14 denotes a tightening ring to be fitted on the peripheral surface of the joint pipe 4. The tightening ring 14 has an arc shape with an inner diameter to be attached to the joint pipe 4 as shown in FIG. Consisting of a belt-like body. Then, a knob 15 is protruded outside the intermediate position in the longitudinal direction of the tightening ring 14, and a stopper piece 1 is bent at one end of the tightening ring 14 at a right angle outward.
6 and the other end is pointed like a sword to form an insertion piece 17. Further, a projection 18 having a streamlined side surface protrudes from the outer surface of the tightening ring 14 at a position close to the stopper piece 16. The shape of the projection 18 is shown in FIG.
As shown in the cross section, a vertical surface 18a is formed on the stopper piece 16 side.
, And a gentle gentle slope 18b is formed on the knob 15 side.

A state in which the thus formed tightening ring 14 is attached to the joint pipe 4 will be described with reference to FIGS. First, as shown in FIG. 3, a stopper piece 16 protruding from one end of the tightening ring 14 is passed through a ring insertion hole 10 provided in an upper part of the joint pipe 4. Then, as shown in FIG. 4, with the projection 18 provided in the vicinity of the stopper piece 16 being forcibly passed through the ring insertion hole 10, the knob 15 is picked, and the fastening ring 14 is rotated in the direction of the arrow. The joint pipe 4 is resiliently spread along the outer peripheral surface of the joint pipe 4. At this time, the knob 15 of the tightening ring 14 rotates to a position close to the handle 12 provided above the joint pipe 4. Next, in this state, when the gripping piece 15 is gripped and the tightening ring 14 is rotated in the direction indicated by the arrow in FIG. 5, the insertion piece portion 17 at the tip of the tightening ring 14 causes the projecting pieces 8,
8, the split end of the joint pipe 4 which is penetrated through the ring through holes 11 and 11 is non-expandably fastened and the tightening ring 1
The projection 18 of the ring 4 is inserted into the ring insertion hole 10 from the side of the gentle slope 18b.
, The stopper piece 16 of the tightening ring 14 is locked to the handle 12 of the joint pipe 4.

Next, the use state of the communication line protection cover C will be described. As shown in FIG. 6, a communication line 19 such as a telephone line installed between telephone poles is supported by a suspension line 21 made of a wire cable via a number of cable hangers 20. The communication line protective cover C is extended from above the suspension line 21 to the communication lines 19 laid between the telephone poles by extending the projecting pieces 7, 7 of the main pipe 1 and the projecting pieces 8, 8 of the joint pipe 4, respectively. It is opened and attached to the suspension line 21 and the communication line 19.

As described above, a plurality of communication line protection covers C are attached over a required length, and the protruding pieces 8, 8 of the joint pipe 4 provided at one end of the adjacent communication line protection cover C are expanded. The gooseneck-shaped projection 3 formed at the tip of the other end that has been opened is fitted and locked to the large-diameter tube portion 5 provided on the joint tube 4. When the fastening ring 14 is attached to the joint pipe 4 in the manner described with reference to FIGS. 3 to 5 in the state where the plurality of opposed communication line protective covers C are connected in this manner, as shown in FIG. The insertion piece 17 of the tightening ring 14 penetrates the ring through holes 11, 11 penetrating the projecting pieces 8, 8 of the joint pipe 4 and the ring through holes 13, 13 of the projecting pieces 7, 7 of the main pipe 1. The divided end of the connecting portion of the communication line protection cover C is closed. When the tightening ring 14 is further rotated, the stopper piece 16 and the projection 18 are blocked by the bar 9 and the handle 12 above the ring insertion hole 10 of the joint pipe 4 to prevent the tightening ring 14 from rotating. And the connection state is surely maintained. The communication line protection cover C can also be used for transmission and distribution lines.

The fastening ring 14 can be attached to the joint tube 4 before the communication line protective cover C is connected, as shown in FIG. , 8
Can be expanded, and in this state, the joint pipe 4
And the gooseneck-shaped projection 3 is inserted into the joint pipe 4
Then, the main body pipe 1 and the joint pipe 4 can be connected by rotating the tightening ring 14. Therefore, if the fastening ring 14 is previously attached to the joint pipe 4, it is possible to reduce dangerous work at high places.

[0013]

As described above, the communication line protection cover according to the present invention comprises a plurality of communication line protection covers attached to a communication line, and a main body tube of an adjacent communication line protection cover. A gooseneck-shaped projection of a fitting / inserting tube portion provided at the other end in the longitudinal direction of the main body tube is fitted and connected to a joint tube provided at one end in the longitudinal direction, and a tightening ring is inserted into a ring insertion hole provided in the joint tube. By attaching and then rotating the tightening ring in the opposite direction, the tightening ring is passed through each ring through hole of the protruding piece opposed to the split end of the joint tube and the fitting / inserting tube portion, so that each The projecting piece cannot be expanded, and the connection between the joint tube and the fitting / inserting tube portion is not separated by an impact.

[Brief description of the drawings]

FIG. 1 is a side view of a communication line protective cover according to the present invention.

FIG. 2 is an enlarged perspective view showing one end portion of FIG. 1 together with a tightening ring.

FIG. 3 is a sectional view showing a state in which a fastening ring is attached to the joint pipe.

FIG. 4 is a cross-sectional view showing a state in which a fastening ring is attached to the joint pipe and straddled.

FIG. 5 is a cross-sectional view of the state in which the tightening ring has been turned in the reverse direction from the state shown in FIG. 4;

FIG. 6 is a sectional view of a use state mainly showing a connecting portion of the communication line protection cover.

FIG. 7 is a side view of the communication line protection cover corresponding to FIG. 6;

FIG. 8 is a cross-sectional view of an intermediate state in which a fastening ring is attached to the joint pipe.

FIG. 9 is a sectional view taken along line AA of FIG. 7;

FIG. 10 is a perspective view showing a state where a fastening ring is attached to the joint pipe.

FIG. 11 is a side view of a main part of a conventional example.

FIG. 12 is a bottom view showing FIG. 11 by rotating it by 90 degrees;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main body pipe 2 Fitting insertion part 3 Gooseneck-shaped projection 4 Joint pipe 5 Large diameter pipe part 7, 7, 8, 8 Projection piece 10 Ring insertion hole 11, 11, 13, 13 Ring through hole 12 Handle 14 Tightening ring 15 Knob Piece 16 stopper piece 18 protrusion 18b gentle slope C protection cover for communication line

Claims (2)

[Claims] An elongate main body formed in a half-cylindrical shape is provided with a gooseneck-shaped protrusion at one end in the longitudinal direction at one end thereof and a joint tube fitted with the gooseneck-shaped protrusion at the other end. In the communication line protective cover, which is fixed and provided with a protruding piece facing the outside of each of the divided ends which are linearly divided in the longitudinal direction of the lower ends of the main body pipe and the joint pipe, and the whole is formed in a half cylindrical shape. A ring insertion hole is protrudingly provided on the outer upper portion near the tip of the joint pipe, and a ring through hole is formed in the protruding piece at the lower end so as to face the ring insertion hole, and at the top of the ring insertion hole and the ring through hole. The handle protrudes from the joint pipe so as to be located, and the projecting piece at the lower end of the gooseneck-shaped projection provided around the main pipe has a position communicating with the ring through hole provided in the joint pipe when the main pipe is connected. A ring through hole is drilled in the Formed in an arc shape corresponding to the outer diameter of the hand tube, a knob is protruded outside a substantially intermediate position in the longitudinal direction of the fastening ring, and a stopper piece bent outward at one end of the fastening ring is provided. A communication line protection cover, wherein a fastening ring is formed and fitted in a ring insertion hole of the joint pipe. 2. The communication line protective cover according to claim 1, further comprising: a projection formed by a gentle slope with one side of the stopper being raised at a predetermined interval from a stopper piece provided on the tightening ring.