JP2609992B2 - Arrester cover - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an arrester cover to be mounted on a lightning arrester of a so-called pole-mounted device mounted on an electric pole with an insulating tool.

[0002]

2. Description of the Related Art Heretofore, such arresters have been used with or without a cover or the like for preventing a ground fault accident.

[0003]

However, in the arrester currently used, the structure between the cap attached to the charged part of the arrester and the connector with the connecting lead and between the lower end of the cap and the insulator main body are used. If these gaps are not covered, the twigs or wires carried by the birds may hit the gaps, causing a ground fault with the ground such as the arm. . Therefore, an object of the present invention is to provide an arrester cover for solving such a problem.

[0004]

In order to achieve the above object, an arrester cover for covering a cap attached to a charging section of an arrester has a required space between the inner diameter of the large-diameter cylindrical portion and the cap. A small-diameter cylindrical portion that is formed to have a size and covers the lower portion of the connector with a lead connected to the upper part of the arrestor is formed continuously at the upper end of the large-diameter cylindrical portion, and these cylindrical portions are vertically arranged. A pair of left and right cover halves, each of which is formed by dividing into two and protruding a flange piece at each of the divided edges, are formed. An engagement groove is formed on the other half of the cover half with a locking claw protruding on one side and an engagement hole on the other, and a rib of a connector with a lead is engaged on the inner wall surface of the small-diameter cylindrical portion. The large-diameter cylindrical portion is brought into contact with the cap on the inner peripheral wall surface. While projecting spacers constructed by projecting the gripping piece for clamping an insulating tool on the outer circumferential surface.

[0005]

[Effect] Each cover half is expanded with the hinge as a fulcrum, the divided edge is expanded, the gripping piece of the arrestor cover is clamped by an insulating tool, the arrestor is housed in one cover half, and the lead is provided in the engaging groove. The connector ribs are fitted and positioned,
This arrestor cover is covered even when power is supplied by placing one cover half on the other cover half, sandwiching the opposite flange piece with an insulating tool, and locking each locking claw piece in the engagement hole. Can be mounted safely.

[0006]

An embodiment of the present invention will be described below with reference to the drawings. In the figure, reference numeral 1 denotes an arrester, and this arrester 1 is an insulator main body 2 formed by providing a plurality of protruding annular portions.
And a cap 4 is attached to the charging unit 3. Then, the connector with lead 6 is connected to the connection portion 5 protruding above the cap 4. Ribs 7 are provided around the lower part of the connector 6 with leads.

Reference numeral 8 denotes an arrester cover that covers the lower portion of the cap 4 and the connector 6 with leads. This arrester cover 8 is a large-diameter cylindrical portion 9 for covering the cap 4.
And a small-diameter cylindrical portion 10 for covering a lower portion of the connector 6 with a lead is connected to the upper end of the large-diameter cylindrical portion 9.
These two tubular portions 9 and 10 are vertically divided into two halves, and a cover half having flange portions 11a, 11b, 11a 'and 11b' and 12a, 12b, 12a 'and 12b' of a required width projecting from the divided edges. The body 8a, 8b is formed.

In the large-diameter cylindrical portion 9, one flange piece 11 is provided.
a, 11a 'are connected by a hinge 13 so as to be openable and closable, and thick portions 14, 14', 14, 14 'are respectively provided at upper and lower positions of the other flange pieces 11b, 11b' as shown in FIG. ,
One of the thick portions 14 ', 14' has locking claw pieces 15, 15 protruding from the surface facing the thick portions 14, 14, and the other thick portion 14, 14 has the locking claw. Engagement holes 16, 16 are opened facing the pieces 15, 15.

In the small-diameter cylindrical portion 10, each flange piece 12a, 1
As shown in FIGS. 1 to 3, substantially the entirety of each of 2a ', 12b, 12b' is formed to have a large thickness, and one of the opposed flange pieces 12a ', 12b' faces the flange pieces 12a, 12b. The locking claws 17, 17 are protruded, and the
a, 12b, the locking holes 1 facing the locking claw pieces 17, 17;
8 and 18 are established. Further, an engagement groove 19 for engaging the rib 7 of the connector 6 with a lead is provided at a lower portion of the inner wall of the small-diameter cylindrical portion 10.

Further, the large-diameter cylindrical portion 9 is provided with a spacer 20 at an intermediate height position on the side surface of the inner wall so as to keep an interval from the cap 4.
Are formed horizontally to form a space S, and a gripping piece 22 which is held by an insulating tool 21 at a position near the flange piece 11b on the outer peripheral surface.
To protrude. The large-diameter cylindrical portion 9 has a length such that its lower end is located below the cap 4 that covers the uppermost charging portion 3 of the insulator main body 2 of the arrester 1.

Next, a method of mounting the arrester cover 8 configured as described above will be described. As shown in FIG. 6, the arrestor cover 8 has the cover halves 8a and 8b opened, holds the gripping piece 22 provided on the outer peripheral surface of the arrester cover 8 with an insulating tool 21 called a hot stick, and holds the arrester cover 8. The arrestor 1 with one cover half 8a covered with the cap 4 as shown in FIG.
When the rib 7 of the connector 6 with the lead is fitted and positioned in the engaging groove 19 provided in the small-diameter cylindrical portion 10 of the arrester cover 8, the arrestor cover 8 is fixed to the arrester 1 in a suspended state. Is done. With this positioning, the small-diameter cylindrical portion 10 covers the half of the connector 6 with the lead,
The large-diameter cylindrical portion 9 has a lower end covered by a half of the uppermost projecting annular portion of the insulator main body 2, and a spacer 20 provided in the middle sandwiches a half-circle of the cap 4. While holding S, it is covered by the cover half 8a.

Therefore, the other cover half 8b is put on the cover half 8a in the same manner as described above, and the thick portions 14,
As shown in FIG. 8, 14 'is sandwiched between insulating tools 20 so that the locking claw pieces 15, 15 are locked in the engaging holes 16, 16, respectively.
(See FIG. 9) Also, the flange pieces 12b and 12b 'are
1 and the locking claw piece 17 is locked in the engaging hole 16. Then, the arrester cover 8 is
Rotate by 0 degrees, clamp the flange pieces 12a and 12a 'with the insulating tool 21 and lock the locking claw 17 in the locking hole 18,
Installation is completed.

[0013]

As described above, the arrester cover of the present invention completely covers the space from the lower part of the connector with leads connected to the arrestor to the uppermost annular protrusion of the insulator main body, and is structurally disposed above and below the cap. The existing gap is concealed, and it is possible to prevent a ground fault accident caused by contact of a twig, a wire, or the like carried by the bird to the gap. Then, there is no danger that the arrester cover will be damaged when an overvoltage is generated by radiating heat by the space existing between the arrester cover and the cap attached to the charged part of the arrester cover. Also, the arrester cover is
By using an insulating tool, installation during energization can be easily performed, and danger during operation is completely eliminated.

[Brief description of the drawings]

FIG. 1 is a front view of an arrester cover of the present invention.

FIG. 2 is a side view mainly showing a joint portion of the arrester cover.

FIG. 3 is a plan view of an arrester cover.

FIG. 4 is a front view of a half of an arrester cover.

FIG. 5 is a front view showing a use state of the arrester cover.

FIG. 6 is a perspective view showing the order of mounting the arrester cover.

FIG. 7 is a perspective view showing the order of mounting the arrester cover.

FIG. 8 is a perspective view showing the order of mounting the arrester cover.

FIG. 9 is a perspective view showing the order of mounting the arrester cover.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Arrester 3 Charging part 4 Cap 6 Leaded connector 7 Rib 8 Arrester cover 8a, 8b Cover half 9 Large diameter cylinder part 10 Small diameter cylinder part 11a, 11a 'Flange piece 11b, 11b' Flange piece 12a, 12a 'Flange piece 12b , 12b 'flange piece 13 hinge 15, 15 locking claw piece 16, 16 engaging hole 17, 17 locking claw piece 18, 18 engaging hole 19 engaging groove 20 spacer 21 insulating tool 22 gripping piece S space

Claims (1)

(57) [Claims] An arrestor cover for covering a cap attached to a charged part of an arrester has an inner diameter of a large-diameter cylindrical portion and a cap.
To a size that has the required space between
The upper end of the large-diameter cylindrical portion, the shape and continuously provided a small-diameter cylindrical portion to cover the bottom of the leaded connector connected to the top of arrester
Form, to form a pair of left and right cover halves of each split edge and bisects each of these cylindrical portion longitudinally projecting from the flange pieces, these cover half of one of the large-diameter cylindrical portion openably connecting the collar piece as a hinge, opened engagement holes in the other with the other flange pieces each cover half to project the engaging claw to one, the small diameter tubular portion inner side An engaging groove for engaging the rib of the connector with a lead is provided on the wall surface, and the inner peripheral portion is
When a spacer to be in contact with the cap projects from the wall
In both cases, the arrestor cover is characterized in that a gripping piece to be clamped by an insulating tool protrudes from the outer peripheral surface .