JP2014121157A - Indirect sheet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an indirect sheet capable of easily and temporarily fastening an electric wire opened during construction work of an indirect live line.SOLUTION: An indirect sheet 1 comprises: a two-folded insulation sheet 2 covering a high-voltage drop wire L1; a pair of holding parts 6, 6 attached to an exterior surface of the insulation sheet 2; a pair of grip parts 7, 7 arranged on a fold line part 21 side of the insulation sheet 2 and configured to open and close the pair of holding parts 6, 6; and a first clip 4 and a second clip 5 having a plurality of projections 8 arranged on exterior surfaces of the pair of holding parts 6, 6.

Description

  The present invention relates to an indirect sheet. More specifically, the present invention relates to an indirect sheet that can temporarily fix an electric wire opened during indirect hot wire construction.

Conventionally, as an indirect sheet, the technique disclosed in Patent Document 1 is known (see, for example, Patent Document 1).
In the technique disclosed in Patent Document 1, a two-fold insulating sheet, a rod-like body disposed on each of two side edges opposite to the folding line side of the two-fold insulating sheet, and the rod-like body are fixed. And a clip having a pair of clamping portions attached to the outer surface of the insulating sheet.
In this technique, a bent portion that protrudes toward a space near the other tip portion is provided at one tip portion of the pair of holding portions of the clip. Thereby, even if it is a case where a pair of clamping part of a clip clamps a some electric wire, an electric wire does not pull out from a pair of clamping part of a clip.

Japanese Unexamined Patent Publication No. 2011-62004

By the way, when the distribution transformer is replaced or the high-voltage cutout is replaced by indirect hot-wire work, the high-voltage underline is removed to open the circuit.
Specifically, since the high voltage underline is in a charged state, the indirect sheet is first covered with the high voltage underline, and then the high pressure underline is removed. The high-voltage underline removed at this time is temporarily fixed to the high-voltage line or the high-pressure underline that has not been removed by using a clip.
In the operation of temporarily fixing the high-voltage underline removed using the clip, it is necessary to temporarily hold the removed high-pressure underline and the high-voltage line or the high-pressure underline that has not yet been removed. The removed high-pressure underline is easily pulled out from the pair of holding portions of the clip, and the above operation is troublesome for the operator.

  This invention is for solving the said subject, The objective is to provide the indirect sheet | seat which can carry out the temporary stop of the electric wire open | released during indirect hot wire construction.

  (1) An indirect sheet according to the present invention is arranged on the side of a folded line part of the insulating sheet, a pair of sandwiched parts attached to the outer surface of the insulating sheet, and a pair of sandwiched parts that are covered with the charging part. And a clip having a plurality of protrusions disposed on the outer surface of the pair of clamping parts.

  (2) It is preferable that the plurality of protrusions are made of a flexible resin member.

  ADVANTAGE OF THE INVENTION According to this invention, the indirect sheet | seat which can temporarily fix an electric wire easily during indirect hot wire construction can be provided.

It is a top view which shows the indirect sheet | seat which concerns on embodiment of this invention. It is a figure which shows the 1st clip part of the indirect sheet | seat which concerns on the said embodiment, FIG. 2 (a) is a perspective view of a 1st clip part, FIG.2 (b) is a side view of a 1st clip part. FIG. 2C is a plan view of the first clip portion. It is an exploded view showing the 1st clip part of the indirect sheet concerning the above-mentioned embodiment. It is a figure which shows the state which coat | covered the indirect sheet | seat which concerns on the said embodiment on the high voltage underline. FIG. 5A is a diagram illustrating a state in which the removed high-pressure underline according to the embodiment is temporarily fixed between the protrusions of the first clip of the indirect sheet, FIG. 5A is an overall view, and FIG. FIG. 5 is an enlarged view of the first clip of the indirect sheet temporarily secured with the removed high-pressure underline.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[Configuration of indirect sheet]
The indirect sheet 1 is covered with the high-voltage underline L1 when the distribution transformer 100 is suspended or the high-voltage cutout is replaced by indirect hot-wire work (see FIG. 4).

  As shown in FIG. 1, the indirect sheet 1 includes an insulating sheet 2, a rod-shaped body 3, a first clip 4, and a second clip 5.

The insulating sheet 2 is configured by folding a rectangular sheet. The insulating sheet 2 is made of a soft synthetic resin material and has an insulating property.
The insulating sheet 2 includes a fold line portion 21, a flat surface portion 22, and a folded portion 23.

  The fold line portion 21 is formed on the position of the fold line when the insulating sheet 2 is folded in the width direction, that is, on the width direction center line C <b> 1 extending in the longitudinal direction of the insulating sheet 2. The insulating sheet 2 folded in two at the fold line portion 21 is used in a state in which the longitudinal direction coincides with the vertical direction.

  Two flat portions 22 are constituted by one and the other in the width direction of the broken line portion 21 in the insulating sheet 2.

The folded portion 23 is configured by folding the insulating sheet 2 outwardly at a pair of open side edges extending in parallel with the fold line portion 21 of each of the two plane portions 22. In more detail, the folding | returning part 23 is joined to the plane part 22 in the folding | turning end 23a, and is not joined to each plane part 22 in the part except the folding | turning end 23a.
The folded portion 23 is formed in a cylindrical shape having a hole 24 extending in the longitudinal direction (vertical direction) of the insulating sheet 2.

The rod-shaped body 3 is constituted by a columnar rod. This rod-shaped body 3 is made of hard plastic and has an insulating property.
The diameter of the rod-shaped body 3 is set smaller than the hole diameter of the hole portion 24 so that the rod-shaped body 3 can be fitted into the hole portion 24 formed in the folded portion 23 of the insulating sheet 2.

The first clip 4 and the second clip 5 can open and close the insulating sheet 2 folded in two at the folding line portion 21, and normally hold the insulating sheet 2 in a closed state.
As shown in FIG. 1, the first clip 4 is disposed on the upper end portion of the insulating sheet 2 folded in two at the fold line portion 21. Further, the second clip 5 is disposed at the longitudinal center portion (vertical direction center portion) of the insulating sheet 2 folded in two at the folding line portion 21.

Next, the configuration of the first clip 4 and the second clip 5 will be described with the first clip 4 as a representative.
As shown in FIG. 2, the first clip 4 includes a first clamping member 41, a second clamping member 42, and a coil spring 43.

The 1st clamping member 41 and the 2nd clamping member 42 are formed in the rectangular plate shape bent in the position where the longitudinal direction deviated. The first clamping member 41 and the second clamping member 42 are made of hard plastic and have insulating properties.
The 1st clamping member 41 and the 2nd clamping member 42 have the axis | shafts 41a and 42a extended in the width direction in a bending part. The first clamping member 41 and the second clamping member 42 are pivotally supported so that the shafts 41a and 42a are aligned with each other, and the shafts 41a and 42a are pivotable with respect to each other.
Each of the first clamping member 41 and the second clamping member 42 has the clamping part 6 on one side and the gripping part 7 on the other side with the shafts 41a and 42a as a boundary.

Each clamping part 6 is the same substantially rectangular parallelepiped shape, and is connected with the axis | shafts 41a and 42a in the base end side.
Each clamping part 6 has two recessed parts 61 and 62 arranged in a longitudinal direction on the opposing inner surface of a pair of clamping parts 6 and 6 of the first clamping member 41 and the second clamping member 42. The concave portion 61 on the distal end side that is opposite to the proximal end side of each clamping portion 6 has a curved arc shape. The concave portion 62 on the base end side of each clamping portion 6 is rectangular.
Each clamping part 6 has a through-hole 63 that penetrates both side surfaces at the tip. The diameter of the through-hole 63 is set larger than the diameter of the rod-shaped body 3 so that the rod-shaped body 3 can be inserted into the through-hole 63.

Each gripping part 7 has the same substantially rectangular parallelepiped shape smaller than the sandwiching part 6, and is provided on the opposite side of the sandwiching part 6 with respect to the shafts 41a and 42a.
The outer surface of each gripping portion 7 is processed into a grip surface 71 that has been subjected to anti-slip processing. The upper end portion of each gripping portion 7 has a flange portion 72 that protrudes outward.

  The coil spring 43 includes a main body portion 43 a on the shafts 41 a and 42 a and each end portion 43 b in each of the pair of gripping portions 7. The coil spring 43 biases the force in a direction to close the pair of sandwiching portions 6 and 6. For this reason, the operator can open the pair of holding portions 6 and 6 when the pair of gripping portions 7 and 7 are brought close to the urging force of the coil spring 43 using an indirect hot wire tool. On the other hand, when the operator releases the pair of gripping portions 7, 7, the pair of sandwiching portions 6, 6 are closed by the bias of the coil spring 43.

  Here, the outer surface of each clamping part 6 has a plurality of rod-shaped protrusions 8 protruding outward. The protrusion 8 is made of soft silicon, plastic, or ethylene propylene rubber, and has flexibility. As will be described later, the protruding amount of the protruding portion 8 is set to a length having a margin on the tip end side even when the high-voltage underline L1 is sandwiched between the protruding portions 8.

The plurality of protrusions 8 are arranged in two rows in the longitudinal direction of each clamping portion 6 of the first clip 4 and the second clip 5 that coincides with the width direction of the indirect sheet 1. This two-row arrangement is configured in an equal arrangement in which a plurality of protrusions 8 are arranged in the same order in the longitudinal direction of each sandwiching portion 6.
The gap between the protrusions 8 is set to a size that allows the high-voltage underline L1 to be sandwiched and does not allow the sandwiched high-pressure underline L1 to escape.

[Indirect sheet assembly method]
Next, a method for assembling the indirect sheet 1 will be described.
As shown in FIG. 3, first, the first clip 4 and the second clip 5 are arranged so that the insulating sheet 2 folded in half is sandwiched between the pair of sandwiching portions 6 and 6. Here, the first clip 4 and the second clip 5 are arranged between the folded portions 23 of the insulating sheet 2 so as to connect the through holes 63 into which the rod-shaped bodies 3 are inserted, like the hole portions 24 of the folded portions 23. The

  Next, the two rod-like bodies 3 are inserted into the hole 24 of the folded portion 23 and the through holes 63 of the first clip 4 and the second clip 5, respectively. Accordingly, the pair of sandwiching portions 6 and 6 of the first clip 4 and the second clip 5 are attached to the outer surface of the insulating sheet 2 via the rod-shaped body 3.

[Indirect sheet usage example]
As shown in FIG. 4, the indirect sheet 1 is connected to a high-voltage underline L <b> 1 extending vertically between the braces 101 and 102 when the distribution transformer 100 is replaced or the high-voltage cutout is replaced by indirect hot-wire work. Covered. The indirect sheet 1 covered with the high voltage underline L1 prevents a short circuit between the high pressure underlines L1 and L2.

First, in a state where the indirect sheet 1 is held by one worker, the other worker uses the indirect hot wire tool to bring the pair of gripping portions 7 and 7 close to each other and move the first clip 4 A pair of clamping parts 6 and 6 are opened, and the upper side of the insulating sheet 2 is opened. Next, the worker puts the upper side of the insulating sheet 2 on the high-voltage underline L1. And this operator removes an indirect hot wire tool, closes a pair of clamping parts 6 and 6 of the 1st clip 4, and attaches the 1st clip 4 to the high voltage underline L1.
The operator then opens and closes the second clip 5 in the same manner as the first clip 4 with the indirect sheet 1 attached to the high-pressure underline L1 by the first clip 4, and the second clip 5 is attached to the high-pressure underline L1. Install. Thereby, the indirect sheet | seat 1 is coat | covered by the high voltage underline L1.

The indirect sheet 1 covered with the high-voltage underline L1 is in a state in which the longitudinal directions of the first clip 4 and the second clip 5 are aligned with the horizontal direction.
In FIG. 4, since the high pressure underline L1 is long, the two indirect sheets 1 and 1 are covered with the high pressure underline L1.

[Example of temporary fixing of the opened underline]
Next, as shown in FIG. 5, in the indirect hot-wire construction, the high-voltage draw line L <b> 1 is removed from the high-voltage line M <b> 1 to open the electric circuit. The high-voltage underline LA removed at this time is sandwiched between any one of the plurality of projecting portions 8 provided on the outer surfaces of the pair of sandwiching portions 6 and 6 in the second clip 5 of the indirect sheet 1 and temporarily fixed. To do.

  First, when the operator removes the high-voltage underline L1 connected to the high-voltage line M1 by the connector 103, the removed high-voltage underline LA is perpendicular to the terminal 104 in parallel with the indirect sheet 1 covered with the high-voltage underline L1. Hanging in the direction. At this time, the removed high voltage underline LA hanging from the terminal 104 in the vertical direction intersects with the first clip 4 and the second clip 5 whose longitudinal directions are aligned with the horizontal direction.

Next, the operator, at the position where the removed high pressure underline LA intersects with the first clip 4 or the second clip 5, uses the high pressure underline LA as a pair of the first clip 4 or the second clip 5. It is sandwiched between any of the plurality of projections 8 provided on the outer surfaces of the clamping units 6 and 6 and arranged in the horizontal direction, and temporarily fixed.
Here, since the plurality of protrusions 8 are equally arranged in two rows in the longitudinal direction on the outer surfaces of the pair of sandwiching portions 6, 6, two rows of the high-voltage pull-down lines LA hanging down in the vertical direction are multiplexed at the same time. Can be sandwiched between them. As a result, as shown in FIG. 5B, the high-voltage underline LA is sandwiched between the protrusions 8 in a multiple manner, and even if the high-pressure underline LA vibrates due to wind or the like, it is difficult to come off between the protrusions 8.
In addition, since the plurality of protrusions 8 are provided on the outer surfaces of the pair of sandwiching portions 6 and 6 in the first clip 4 and the second clip 5 of the indirect sheet 1, the high-voltage underline LA is connected to the plurality of clips 4 and 5. The high pressure underline LA may be more difficult to come off between the protrusions 8 by being sandwiched between the protrusions 8 in a multiple manner.

  According to the indirect sheet | seat 1 which concerns on the above this embodiment, there exist the following effects.

  (1) The indirect sheet 1 has a plurality of protrusions 8 on the outer surfaces of the pair of sandwiching portions 6 and 6 of the first clip 4 and the second clip 5. For this reason, the high-voltage underline LA removed during the indirect hot wire construction is applied to the outer surfaces of the pair of sandwiching portions 6 and 6 in the first clip 4 or the second clip 5 of the indirect sheet 1 covered with the high-pressure underline L1. The projections 8 are sandwiched between any one of the plurality of projections 8 provided. Therefore, the operator can easily temporarily fix the high-voltage underline LA using only the indirect sheet 1 covered with the high-voltage underline L1 without requiring another tool. As a result, the number of tools required for work can be reduced, and work efficiency can be improved.

  (2) The plurality of protrusions 8 are made of a flexible resin member. Accordingly, the plurality of protrusions 8 are easily deformed, and the high-voltage underline LA is easily sandwiched between the protrusions 8.

  Note that the present invention is not limited to the above-described embodiment, and modifications, improvements, and the like within the scope that can achieve the object of the present invention are included in the scope of the present invention.

  In the present embodiment, the plurality of projecting portions 8 are arranged in two rows in the longitudinal direction on the outer surfaces of the pair of sandwiching portions 6 and 6, but are not limited thereto. For example, the plurality of protrusions 8 may be arranged in three or more rows in the longitudinal direction on the outer surfaces of the pair of sandwiching portions 6 and 6. The plurality of protrusions 8 are configured as hook-shaped protrusions extending in the entire width direction on the outer surfaces of the pair of sandwiching parts 6, 6, and are provided in a row in the longitudinal direction on the outer surfaces of the pair of sandwiching parts 6, 6. May be used.

DESCRIPTION OF SYMBOLS 1 ... Indirect sheet | seat 2 ... Insulating sheet 21 ... Folding line part 4 ... 1st clip 5 ... 2nd clip 6 ... Clamping part 7 ... Grip part 8 ... Protrusion part

Claims (2)

A half-folded insulation sheet coated on the live part;
A pair of clamping parts attached to the outer surface of the insulating sheet, a pair of gripping parts arranged on the folding line part side of the insulating sheet to open and close the pair of clamping parts, and a plurality of arranged on the outer surfaces of the pair of clamping parts An indirect sheet comprising: a clip having a protrusion. The indirect sheet according to claim 1, wherein the plurality of protrusions are configured by a resin member having flexibility.

Images