JPH0124855Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a protective cylinder for a power cable connecting part, and more particularly to a protective cylinder used by being fitted over the circumference of a power cable connecting part.

It is necessary to mechanically protect the power cable connection portion from the outside, and for this reason, a predetermined protection cylinder is provided around the connection portion. On the other hand, as a conventional protection cylinder of this kind, a cast-molded cylinder is used, in which the vicinity of both ends is tapered into a tapered shape, and the inside diameter of both ends is slightly larger than the outside diameter of the cable.

However, in the case of the above-mentioned protective cylinder, although mechanical strength can be ensured, since it is a cast molded body, it is expensive and has the drawback of being inferior in economic efficiency. Furthermore, since the inner diameter of both ends of the protective cylinder is slightly larger than the outer diameter of the cable, when inserting it around the circumference of the power cable (the protective cylinder is is inserted around the circumference of the power cable prior to connection of the power cable,
After the power cable is connected, it is placed by moving it around the connection area. Further, the protective cylinder is configured so that it can be divided into two in the circumferential direction near the center of the cylinder, and each divided cylinder is inserted around the circumference of each power cable. . ), it has the disadvantage of being inferior in handling.

The present invention has been devised in view of the above points, and its purpose is to eliminate the above-mentioned conventional drawbacks and provide a protective cylinder for power cable connections that is economical and easy to handle. be.

That is, the gist of the present invention is that the invention consists of a cylindrical part and a crown-shaped part provided at both ends of the cylindrical part, and when the crown-shaped part is squeezed, at least near its end, the diameter of the crown almost matches the outer diameter of the cable. The invention is characterized by comprising a plurality of strips capable of forming a cylindrical portion having an inner diameter of It is located in a protective cylindrical body for power cable connections.

Next, an embodiment of the present invention will be described with reference to the accompanying drawings. Incidentally, FIG. 1 is an overall explanatory diagram of this embodiment, FIG. 2 is an explanatory diagram of its usage state, and FIGS. 3 and 4 are partial explanatory diagrams of the strip.

First, the power cable connection portion protection cylinder of this embodiment is composed of a metal cylindrical portion 1 and crown-shaped portions 2 provided at both ends of the metal cylindrical portion 1.

The cylindrical portion 1 and the crown-shaped portion 2 need to have excellent mechanical strength, and in consideration of this, metals are suitable as the material.
It is also good to make the cylindrical portion 1 somewhat thicker than the crown-shaped portion 2.

The crown-shaped portion 2 is, as shown in FIG.
consisting of a plurality of strips 5 which, when squeezed, form a cylindrical body 4 having an inner diameter approximately matching the outer diameter of the cable 3 near its end;
Furthermore, each of the strips 5 is provided with a locking portion 7 as shown in FIG. 3 for the purpose of making it easier for a binding line 6 provided on the circumference of the crown-shaped portion 2 to tighten. It becomes. Incidentally, the locking portion 7 may be of the type shown in FIG. 4.

In addition, ribs 8 are provided in the longitudinal direction of the surface of the strip 5 for the purpose of increasing its own mechanical strength, and ribs 8 are provided in the surface circumferential direction near the base to improve its own bendability.
Although ribs 9 are provided for the purpose of improving workability during drawing, they may be omitted.

Moreover, in the figure, 10 is an anti-corrosion protection layer formed on one circumference of the cylindrical portion. Reference numeral 11 designates a heat-shrinkable tube with an adhesive layer for waterproof sealing, which is applied around the circumference of the crown-shaped portion 2 after the protective cylinder of this embodiment is provided on the cable connection portion 12.

Although not particularly shown, in order to improve heat dissipation of the cable connection part 12, black paint may be applied to the inner surfaces of the cylindrical part 1 and the crown-shaped part 2, or arbitrary holes may be bored in the cylindrical part 1. It is possible to expose the black anti-corrosion protective layer on the cable connection part 12 side.

The cylindrical portion 1 and the crown-shaped portion are made by rolling a predetermined metal plate with strips 5 stamped on both edges and welding or soldering the butt or overlapping seams. It's practical.

According to the protective cylinder for the power cable connection part of the present embodiment constructed as described above, the installation, that is, the insertion over the circumference of the power cable, is sufficient for the cylinder itself to be sufficient relative to the outer diameter of the power cable. As a result of its large internal diameter, it is extremely easy to handle, and after it has been placed over the power cable connection to be protected, it is only necessary to squeeze both ends, and its handling is therefore very good. Furthermore, the fasteners such as binding wires provided at both ends of the cable to fix it on the circumference of the cable have a good seating position due to the presence of the locking part 7, and therefore the protective cylinder can be securely fixed to the cable. It can be taken as a thing. The protective cylinder itself can be made by rolling a stamped metal plate or the like so as to form the strips 5 on both edges and tying the seams together. It can be manufactured at low cost, and therefore its industrial value can be said to be extremely large.

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram of one embodiment of the protective cylinder for the power cable connection part of the present invention, Fig. 2 is an explanatory diagram of its usage state, and Fig. 3 is a partial diagram for explaining its fastener locking part. , FIG. 4 is a partial view for explaining a fastener locking portion of another embodiment. 1: cylindrical part, 2: crown-shaped part, 5: strip,
6: Bind line (tightening tool), 7: Locking part.

Claims (1)

[Claims for Utility Model Registration] 1. Consisting of a cylindrical portion 1 and crown-shaped portions 2 provided at both ends of the cylindrical portion 1, the crown-shaped portion 2
a plurality of strips 5 which, when squeezed, form a cylindrical body having an inner diameter approximately matching the outer diameter of the cable, at least near its ends;
A protective cylindrical body for a power cable connection part, further comprising a locking part 7 for a fastener such as a binding wire on at least one of the strips 5. 2. A protective cylindrical body for a power cable connection portion according to claim 1 of the utility model registration claim, in which the cylindrical portion and the crown-shaped portion are made of metal material. 3. The protective cylindrical body for a power cable connection portion according to claim 1, wherein the wall thickness of the cylindrical portion is thicker than the wall thickness of the crown-shaped portion. 4. A protective cylinder for a power cable connection portion according to claim 1 of the utility model registration claim, in which ribs 8 are provided in the longitudinal direction of the surface of the strip of the crown-shaped portion. 5. The protective cylinder for a power cable connection portion according to claim 1, which is provided with ribs 9 in the circumferential direction of the surface near the base of the strip of the crown-shaped portion. 6. The protective cylindrical body for a power cable connection portion according to claim 1 of the utility model registration claim, in which the inner surfaces of the cylindrical portion and the crown-shaped portion are coated with black paint. 7. A protective cylindrical body for a power cable connection portion according to claim 1 of the utility model registration claim, wherein an anti-corrosion protective layer is provided on the periphery of the cylindrical portion. 8. A protective cylinder for a power cable connection portion according to claim 1 of the utility model registration claim, wherein a heat-shrinkable tube for sealing is provided on the periphery of the crown-shaped portion. 9. A protective cylindrical body for a power cable connection portion according to claim 6 of the utility model registration claim, which is provided with holes for heat dissipation in the cylindrical portion.