JPH0658528U - Electric wire support insulator for switchboard - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide an insulator capable of supporting an electric wire without damaging the insulation coating of the electric wire and maintaining a high degree of electrical insulation. [Structure] An insulator body 1 formed by implanting a pair of tightening bolts 5 in an insulator 4, a pair of upper and lower clamping members 2 made of insulating synthetic resin for clamping an electric wire W, and a slit for covering the electric wire W. A rubber bushing 6 with 6a and a cap nut 3 made of an insulating synthetic resin for screwing the bolt 5 to tighten the upper and lower clamping members 2 are provided to form an electric wire support insulator. The pair of holding members 2 are of the same shape and are joined by being vertically joined together, and each holding member 2 is provided with a pair of long holes 2a through which the fastening bolts 5 pass vertically and has a pair of long lengths. An electric wire holding groove 2b having a semicircular cross section is provided on the upper surface side or the lower surface side in the middle of the hole 2a.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to improvement of an insulator for insulating and supporting electric wires in a switchboard.

[0002]

[Prior art]

 An electric wire support insulator used in a conventional switchboard is, for example, as shown in FIG. That is, this insulator is an insulator main body 13 formed by implanting a pair of tightening bolts 12 on the upper part of a cylindrical insulator 11 with a space therebetween, and an electric wire W is tightened with the tightening bolts 12 of the insulator main body 13. It has a metal sandwiching plate member 14 for sandwiching it, and sandwiches the electric wire W directly between the sandwiching plate member 14 and the insulator body 14 and tightens it with a nut 16 to support it. In such a conventional electric wire support insulator, since the electric wire W is directly clamped between the metal sandwiching plate member 14 and the insulator body 13, the insulating coating is easily damaged and the sandwiching plate member 14 is made of metal. Therefore, there is a drawback that insulation is likely to be hindered.

[0003]

[Problems to be solved by the device]

 Therefore, an object of the present invention is to provide an insulator capable of supporting an electric wire without damaging the insulating coating of the electric wire and maintaining a high degree of electrical insulation.

[0004]

[Means for Solving the Problems]

 In the present invention, in order to solve the above-mentioned problems, an insulator main body 1 formed by implanting a pair of tightening bolts 5 on an upper portion of a cylindrical insulator 4 with a space therebetween, and a tightening bolt 5 for the insulator main body 1. A pair of upper and lower clamping members 2 made of an insulating synthetic resin for clamping the electric wire W by clamping with the rubber, and a rubber having a slit 6a interposed between the clamping member 2 and the electric wire W and covering the electric wire W. The bushing 6 and the nut 3 for screwing the bolt 5 to tighten the pair of upper and lower clamping members 2 are provided, and the pair of clamping members 2 are of the same shape and are joined by combining them vertically. Moreover, each sandwiching member 2 is provided with a pair of elongated holes 2a through which the tightening bolt 5 penetrates vertically, and is located in the middle of the pair of elongated holes 2a and has a semicircular cross section on the upper surface side or the lower surface side. Switchboard with wire holding groove 2b It was constructed of wire supporting insulators.

[0005]

[Action]

 The electric wire support insulator of the present invention is used by being attached to the insulator main body 1 so that two holding members 2 of the same shape are joined upside down and a circular electric wire through hole formed by the electric wire holding groove 2b is formed between them. A rubber bushing 6 is attached to the electric wire W in advance, and the holding member 2 is clamped to the clamping bolt 5 of the insulator body 1 with the portion where the rubber bushing 6 is attached sandwiched between the clamping grooves 2b of the pair of clamping members 2. Fit in. Several rubber bushings 6 having the same outer diameter and different inner diameter are prepared, and the rubber bushing 6 is appropriately selected according to the diameter of the electric wire W so that the electric wire W is clamped by the clamping member 2 without play. Differences in the distance between the pair of tightening bolts 5 depending on the type of the insulator body 1 are dealt with by the elongated holes 2a. Since the electric wire W is further covered with the rubber bushing 6 which is softer than the covering and is held in the electric wire through hole having a circular cross section by the electric wire holding groove 2b, it is not damaged by tightening. Further, since the holding member 2 has an insulating property, a high insulating property is secured.

[0006]

【Example】

 An embodiment of the present invention will be described with reference to the drawings. 1 is a perspective view of the electric wire support insulator, FIG. 2 is a front view of the electric wire support insulator, and FIG. 3 is a side view of the electric wire support insulator.

The electric wire support insulator of the illustrated embodiment includes an insulator body 1 fixed on a base B, a pair of upper and lower holding members 2, and a nut 3 for tightening the holding member 2. . The insulator main body 1 is formed by implanting a pair of tightening bolts 5 on top of a cylindrical insulator 4 with a space therebetween. The holding member 2 is made of an insulating synthetic resin, and is used to hold the electric wire W by vertically tightening the nut 3 and the tightening bolt 5. The holding member 2 is formed by joining the same shape by vertically joining the two members, and has a pair of long holes 2a through which the tightening bolts 5 pass vertically, and the middle of the pair of long holes 2a. The wire holding groove 2b having a semicircular cross section is provided on the upper surface side or the lower surface side. The rubber bushing 6 is interposed between the holding member 2 and the electric wire W, covers the electric wire W, and has a cylindrical shape with a slit 6a. The material is softer than the insulating coating of the electric wire W. As the rubber bushings 6, several kinds having different outer diameters and different inner diameters are prepared, and the rubber bushings 6 are appropriately selected according to the diameter of the electric wire W so that the electric wire W is clamped by the clamping member 2 without play. The electric wire support insulator of this embodiment is used by attaching two holding members 2 of the same shape to each other upside down and mounting it on the insulator body 1 so as to form a circular electric wire through hole by the electric wire holding groove 2b therebetween. . The rubber bushing 6 is attached to the electric wire W in advance. The rubber bushing is attached to the electric wire W by opening the slit 6a. Then, the sandwiching member 2 is fitted into the tightening bolt 5 of the insulator body 1 in a state where the portion where the rubber bushing 6 is mounted is sandwiched between the sandwiching grooves 2b of the pair of sandwiching members 2. As the rubber bushings 6, several types having different outer diameters and different inner diameters are prepared, and are appropriately selected according to the diameter of the electric wire W so that the electric wire W is clamped by the clamping member 2 without any play. The difference in the distance between the pair of tightening bolts 5 depending on the type of the insulator body 1 is dealt with by the elongated hole 2a. Since the electric wire W is covered with the rubber bushing 6 and is held in the electric wire through hole having a circular cross section by the electric wire holding groove 2b, it is not damaged by tightening. Further, since the holding member 2 has an insulating property, a high insulating property is secured.

[0008]

[Effect of device]

 As described above, according to the present invention, the insulator body 1 is formed by arranging the pair of tightening bolts 5 on the upper portion of the cylindrical insulator 4 at a distance from each other, and the tightening bolt 5 of the insulator body 1. And a pair of upper and lower clamping members 2 made of insulating synthetic resin for clamping the electric wire W by tightening it and a rubber with a slit 6a interposed between the clamping member 2 and the electric wire W and covering the electric wire W. The bushing 6 and the nut 3 for tightening the pair of upper and lower clamping members 2 by screwing with the bolts 5 are provided, and the pair of clamping members 2 are the same in shape and are joined by being assembled upside down. Moreover, each sandwiching member 2 is provided with a pair of elongated holes 2a through which the tightening bolt 5 penetrates vertically, and is located in the middle of the pair of elongated holes 2a and has a semicircular cross section on the upper surface side or the lower surface side. Electric wire support for distribution board with holding groove 2b For configuring the insulator, kills with providing insulators can not, moreover supports the wire W while maintaining a high degree of electrical insulation hurt insulating coating of the wire W.

[Brief description of drawings]

FIG. 1 is a perspective view of an electric wire support insulator.

FIG. 2 is a front view of an electric wire support insulator.

FIG. 3 is a side view of an electric wire support insulator.

FIG. 4 is a front view of a conventional electric wire support insulator.

[Explanation of symbols]

 1 Insulator main body 2 Clamping member 2a Long hole 2b Electric wire holding groove 3 Nut 4 Cylindrical insulator 5 Bolt 6 Rubber bushing 6a Sliding

Claims (1)

[Scope of utility model registration request] 1. An insulator main body formed by implanting a pair of tightening bolts at an upper part of a cylindrical insulator with a mutual interval, and an insulating synthetic resin for clamping the electric wire by tightening with the tightening bolts of the insulator main body. Made of a pair of upper and lower clamping members, a flexible rubber bushing provided between the clamping member and the electric wire, the flexible rubber bushing covering the electric wire, and the pair of the upper and lower clamping members screwed to the bolts. And a nut for tightening the pair of clamping members, the same shape is assembled by vertically joining the same, and each has a pair of elongated holes for vertically penetrating the tightening bolt, An electric wire support insulator for a switchboard, which is located in the middle of a pair of elongated holes and has an electric wire holding groove having a semicircular cross section on the upper surface side or the lower surface side.