JP2597301Y2 - Busbar end insulation device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bus-end insulating device in which the ends of solid insulated buses that can be added in the future are insulated in distribution equipment.

[0002]

2. Description of the Related Art A conventional bus terminal end insulation device of this type is shown in FIG.
It is shown as follows. In the figure, 1 is a bus, 2
Is a plurality of screw holes formed on the end face of the bus 1, 3 is a coating of epoxy resin or the like covering the peripheral surface of the bus 1, 4 is a coating 3
Is an annular groove formed near the end of.

[0005] Reference numeral 5 denotes a cylindrical insulating cover having a bottom. An inner polymer 7 and an outer polymer 8 made of conductive rubber are polymerized on the inner surface and the outer surface of the insulating rubber 6, respectively. Reference numeral 9 denotes a ridge formed on the outer surface of the end of the outer polymer 8.

[0004] Reference numeral 10 denotes a two-part annular fastening member superposed on the outer surface of the ridge part 9, 11 denotes an annular projection part formed at an end of the inner surface of the fastening member 10 and fitted in the groove 11, 12. Is a band that tightens the clamp 10, the insulating cover 5 is fixed to the cover 3 via the clamp 10 by the band 12, the protrusion 11 fits into the groove 4, and the insulating cover 5 falls off. Has been prevented.

At the time of extension, the insulating cover 5 is removed, the connection conductor is applied to the end face of the bus bar 1, the bolt inserted into the connection conductor is screwed into the screw hole 2, and the connection conductor is fixed. The connection terminal of the additional bus is slidably connected to the connection conductor.

[0006]

In the case of the above-mentioned conventional apparatus, since the insulating rubber 6 of the insulating cover 5 is extremely fastened, the portion of the insulating rubber 6 which is fastened within a long period of time.
Is deteriorated, the force escapes to a part where no stress is applied, and the contact pressure decreases. Further, since the protrusion 11 of the fastening member 10 is fitted into the groove 4 of the cover 3 and fastened by the band 12,
A strong stress acts on the groove 4 to damage the coating 3, and
There is a problem that the structure is complicated. SUMMARY OF THE INVENTION An object of the present invention is to provide a bus-bar end insulation device having a simple structure, while keeping the above points in mind, preventing a decrease in contact pressure between the busbar covering and the insulating cover and damage to the covering.

[0007]

In order to solve the above-mentioned problems, a bus end insulating device according to the present invention comprises a screw hole formed at the center of the end face of the bus, and a coating covering the peripheral surface of the bus. Body, a tapered taper formed at the end of the coating, a cylindrical insulating cover with a bottom fitted to the taper, and a bolt embedded in the bottom of the cover and screwed into the screw hole. It is provided.

[0008]

In the bus end insulating device according to the present invention having the above-described structure, a tapered taper is formed at the end of the bus bar covering body, and an insulating cover is fitted to the tapered end and embedded in the bottom surface of the cover. Since the bolts are screwed into the screw holes on the end face of the bus bar, the cover can be fixed simply by fitting and rotating the cover to the cover, and sufficient contact pressure can be obtained and the cover can be damaged. None, the structure is simple and the handling is easy.

[0009]

An embodiment will be described with reference to FIG.
In the figure, 13 is a bus, 14 is a screw hole formed at the center of the end face of the bus 13, 15 is a coating of epoxy resin or the like covering the peripheral surface of the bus 13, and 16 is an end of the coating 15. The outer diameter X of the coating body 15 is a formed tapered taper.
In contrast, the outer diameter Y at the tip is slightly smaller.

Reference numeral 17 denotes a cylindrical insulating cover having a bottom. An inner polymer 19 and an outer polymer 20 made of conductive rubber are polymerized on the inner surface and the outer surface of the insulating rubber 18, respectively. A tapered portion is formed so that the diameter of the tip of the inner surface of the insulating cover 17 is slightly smaller than X and the diameter of the middle portion is slightly smaller than Y, similarly to the taper 16 at the end of the cover 15.

Reference numeral 21 denotes a bolt embedded in the center of the bottom surface of the insulating cover 17 and screwed into the screw hole 14 of the bus bar 13.

When the insulating cover 17 is fitted along the taper 16 at the end of the cover 15 and rotated, the bolt 21
Are screwed into the screw holes 14 of the bus bar 13, the insulating cover 17 is fixed to the bus bar 13, and the insulating cover 17 is slightly spread and pressed against the cover 15, and a sufficient contact pressure is obtained.

In addition, at the time of extension, the insulating cover 17 is removed, a center alignment rod is inserted into the screw hole 14, and the alignment rod is also inserted into the screw hole at the end face of the extension bus having the same shape to be centered. Tulip-shaped connectors are provided on the peripheral surfaces of both busbars.

[0014]

[Effects of the Invention] Since the present invention is configured as described above, the following effects can be obtained. A tapered taper 16 is formed at the end of the cover 15 of the bus bar 13, and an insulating cover 17 is fitted into the taper 16.
4, the cover 17 can be easily inserted into the cover 15, the cover 17 can be fixed only by fitting and rotating the cover 17 to the cover 15, and the cover 17 is slightly widened. A sufficient contact pressure can be obtained, the contact pressure does not decrease, and the cover 15 is not damaged, the structure is simple, and handling can be facilitated.

[Brief description of the drawings]

FIG. 1 is a partially cutaway front view of one embodiment of the present invention.

FIG. 2 is a partially cut front view of a conventional example.

[Explanation of symbols]

 13 Bus Bar 14 Screw Hole 15 Cover 16 Taper 17 Insulation Cover 21 Bolt

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-1-200523 (JP, A) JP-A-4-25419 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) H01B 7/00 302 H01B 13/00 515 H01B 17/38 H01B 17/56 H01R 4/22 H01R 4/38 H01R 4/58 H01R 4/70-4/72 H01R 13/52-13/52 302 H01R 25 / 14 H01R 35/02 H02G 5/06 386

Claims (1)

(57) [Scope of request for utility model registration] 1. A screw hole formed at a central portion of an end face of a bus bar, a covering body covering a peripheral surface of the bus bar, a tapered taper formed at an end of the covering body, and fitted to the taper. A busbar end insulation device comprising: a bottomed cylindrical insulating cover combined with the cover; and a bolt embedded in a bottom surface of the cover and screwed into the screw hole.