JPS6345796Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a detention clamp used for power transmission line detention. The retaining clamp has a structure in which a steel sleeve, an aluminum sleeve, and a jumper socket are integrated with a through bolt. As a result, the bolt holes may no longer overlap. Similarly, during crimping, the twisting of the power transmission line may cause the aluminum sleeve to twist slightly, and the bifurcated plug-shaped end of the aluminum sleeve may become twisted, making it difficult to insert the jumper socket. The present invention is intended to solve these difficulties.

Examples will be described with reference to the drawings. The steel sleeve 1 includes a round bar part, a square cross-section part 1a, a square inclined part 1b, and a handle 1c in this order. A hole 1d into which a steel core wire W can be inserted and crimped is bored at the end of the round bar part, and a wavy cut 1e is provided at a part of the outer diameter. Further, an axially elongated hole 1f is bored in the rectangular cross section. The aluminum sleeve 2 consists of a cylindrical part 2a into which a round bar part of a steel sleeve can be inserted and crimped, and a square cylindrical part 2b into which a square cross-section part 1a of the steel sleeve can be slidably inserted. A bolt hole 2c is bored in the part that overlaps with 1f. The jumper socket 3 consists of a clevis part 3a that can hold the rectangular cylinder part 2b of the aluminum sleeve and a socket part 3b into which the jumper wire J can be inserted and crimped.The clevis part has a through hole 3c that overlaps with the bolt hole 2c of the aluminum sleeve. It's worn.

In the present invention configured as described above, after inserting and crimping the steel core wire w into the hole 1d of the steel sleeve, the aluminum sleeve 2 inserted into the power transmission line E in advance is
Move it to the position shown in Figure 1 and crimp it sequentially from the left end of the diagram to the front of the square part. As a result of this crimping, the aluminum sleeve is elongated, and its elongated end is expanded and brought into close contact with the rectangular inclined portion 1b of the steel sleeve. Finally, the hole 3c of the jumper socket is overlapped with the hole 2c of the rectangular cylinder part, and the three bolts 4 are passed through them.

In the above assembly, bolt hole 1 of the steel sleeve
Since f is a long hole, there is no problem in inserting the bolt 4 even if the degree of elongation of the aluminum sleeve varies. Further, since the aluminum sleeve extends while the rectangular cylindrical portion 2b slides on the outer periphery of the rectangular cross-sectional portion 1a, the aluminum sleeve does not twist with respect to the handle C. The aluminum sleeve 2 is inserted into the wavy notch 1e and the bolt 4
Since the steel sleeve is firmly integrated with the steel sleeve by tightening, no displacement occurs along the elongated hole 1f. Also, in the past, a part of the cylindrical aluminum sleeve was removed in the cutting line direction and this part was held in a jumper socket.
The necessary conductive area could not be obtained unless the length of the holding portion was increased. In this respect, since the present invention uses full-surface contact on a rectangular surface, the above-mentioned length can be shortened, and the overall length of the retaining clamp can also be shortened.

The above are the features of the present invention.

[Brief explanation of the drawing]

Fig. 1 is a front view of the present invention, Fig. 2 is a front view of the steel sleeve, Fig. 3 is a cross-sectional view of the steel sleeve in the direction of arrows AA, Fig. 4 is a front view of the aluminum sleeve, and Fig. 5 is a cross-sectional view of the steel sleeve in the direction of arrows BB. 6 and 7 are front and side views of the jumper socket. 1...Steel sleeve, 2...Aluminum sleeve, 3
... Jumper socket, 4... Bolt, E... Transmission line, w... Steel core wire.

Claims (1)

[Scope of utility model registration request] A steel sleeve comprising a round bar part, a square cross section part, a square inclined part, and a puller in this order, a steel core wire insertion hole at the end of the round bar part, and an axial long hole in the square cross section, and a steel sleeve. An aluminum sleeve comprising a cylindrical part into which a round bar part can be inserted and a square cylindrical part into which a square cross-section part can be slidably inserted, and a bolt hole is bored in a part of the square cylindrical part that overlaps with the elongated hole, and an aluminum sleeve. A detention clamp with a rectangular cross section, which has a clevis part that can hold a rectangular cylindrical part, a socket part into which a jumper wire can be inserted, and a jumper socket in which the clevis part has a through hole that overlaps with the bolt hole of the aluminum sleeve. .