JP2012105489A - Insulation cover body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an insulation cover body which enables good work efficiency and has adequate strength.SOLUTION: An insulation cover body 1 is composed of a first sheet 10 which is made of a synthetic resin having flexibility and light transmissivity, a second sheet 11 which is made of a synthetic resin having flexibility and light transmissivity and is overlapped with the first sheet 10, and plate-like reinforcement bodies 12 made of a synthetic resin, which has light transmissivity and is harder than the first and second sheets 10, 11, and disposed between the first and second sheets 10, 11.

Description

  The present invention relates to an insulating cover body that covers current-carrying parts such as a circuit breaker and a transformer during electrical work performed in an electrical room or the like to ensure the safety of workers.

  As a prior art of the present invention, for example, an insulating cover for electric work described in Patent Document 1 can be cited. In this prior art, an insulating sheet is constituted by a mesh-shaped synthetic resin cloth and a transparent synthetic resin sheet, and an edge tape is attached to four sides of the insulating sheet, and a flexible metal rod is inserted into the insulating sheet on one side. Mounting and constituting an insulating cover for electrical work.

Japanese Utility Model Publication No. 7-20009

  However, in the prior art, the insulating cover is configured using a mesh-like synthetic resin cloth, and thus does not have translucency. For this reason, if the current-carrying part is covered with an insulating cover for electrical work, the current-carrying part cannot be visually confirmed from the outside. In recent years, there are various types and types of current-carrying parts, and in order for workers with little experience to check the model and model of the current-carrying part covered with the insulation cover for electrical work, the insulation cover for electrical work has been removed. There is a problem that work efficiency is poor.

  In the prior art, since the insulating cover is composed of a mesh-like synthetic resin cloth and a transparent synthetic resin sheet, for example, when the work area of electrical work is small, the operator can insert the tool while working. There is a problem that the insulating cover and the current-carrying part may be damaged by being brought into contact with the current-carrying part from above the sheet.

  An object of the present invention is to provide an insulating cover body having good working efficiency and sufficient strength.

The present invention includes a first sheet made of a synthetic resin having flexibility and translucency,
A second sheet made of a synthetic resin having flexibility and translucency, and stacked on the first sheet;
An insulating cover body comprising: a plate-shaped reinforcing body that is translucent and made of a synthetic resin harder than the first and second sheets and interposed between the first and second sheets It is.

Further, in the present invention, the first and second sheets are formed in a rectangular shape in an unfolded state by joining at least peripheral portions thereof.
The reinforcing body is composed of a plurality of reinforcing plates formed in a rectangular shape,
The reinforcing plates are spaced apart from each other in the direction in which the side portions forming the pair on the one side and the side portions forming the pair on the other side extend out of the two pairs of parallel side portions of the first or second sheet. And arranged in parallel.

  The present invention is further characterized by comprising a third sheet made of a synthetic resin having flexibility and translucency and interposed between the first sheet and the reinforcing body.

  Further, the present invention is characterized in that at least one of the second sheets is provided with a planar fastener sheet that can be attached to each other in a pair.

  According to the present invention, the insulating cover body includes a first sheet made of a synthetic resin having flexibility and translucency, a second sheet having flexibility and translucency, and between the first and second sheets. Since it is comprised by the plate-shaped reinforcement body which consists of synthetic resin harder than the 1st and 2nd sheet | seat which is interposed in this and has a translucency, it has translucency.

  Thus, even if the insulating cover body is attached to the energizing portion, the operator can visually recognize the energizing portion, and it is not necessary to remove the insulating cover body when confirming the type or type of the energizing portion. Therefore, the work efficiency of electrical work can be improved.

  Further, since the insulating cover body has a plate-like reinforcing body made of a synthetic resin harder than the first and second sheets, even if the tool comes into contact, the tool exceeds the reinforcing body and contacts the current-carrying portion. There is no. Therefore, sufficient strength of the insulating cover body can be ensured, and damage to the energized portion due to contact with a tool or the like can be prevented.

  According to the invention, the reinforcing body includes a plurality of reinforcing plates formed in a rectangular shape, and each reinforcing plate is paired with one of the pair of side portions of the first and second sheets that are parallel to each other. Between each side part which comprises, it arrange | positions in parallel mutually spaced apart in the direction where each side part which makes a pair on the other extends.

  Thereby, the insulating cover body can be bent between the reinforcing plates. Therefore, even if the attachment portion has a rectangular shape or a curved surface shape, the insulating cover body can be bent and attached.

  According to the invention, the insulating cover body is interposed between the first sheet and the reinforcing body, and includes the third sheet made of a synthetic resin having flexibility and translucency. Thereby, the electrical insulation of the insulating cover body can be improved.

  Moreover, according to this invention, the planar fastener sheet | seat which can be mutually joined is provided in each side part which makes a pair by the at least other side of a 2nd sheet | seat. Thereby, each fastener sheet | seat can be mutually joined and an insulating cover body can be made into a cylinder shape. Therefore, for example, even when the current-carrying portion is cylindrical, the entire circumference can be covered with the insulating cover body.

It is a front view which shows the insulating cover body 1 which concerns on 1st Embodiment of this invention. It is the expanded sectional view seen from the cut surface line II-II of FIG. It is the expanded sectional view seen from cut surface line III-III of FIG. It is a front view of the insulating cover body 30 which concerns on 2nd Embodiment. FIG. 5 is an enlarged cross-sectional view taken along the section line VV in FIG. It is a figure which shows the attachment state of the insulating cover body.

  FIG. 1 is a front view showing an insulating cover body 1 according to the first embodiment of the present invention, FIG. 2 is an enlarged cross-sectional view as seen from the cutting plane line II-II in FIG. 1, and FIG. It is the expanded sectional view seen from cut surface line III-III of FIG. Hereinafter, the insulating cover body 1 will be described with reference to the drawings.

  The insulating cover body 1 includes a first sheet 10, a second sheet 11 stacked on the first sheet 10, a plate-like reinforcing body 12 interposed between the first and second sheets 10, 11, 1 sheet 10 and the 3rd sheet | seat 13 interposed between the reinforcement bodies 12 are comprised.

  The 1st sheet | seat 10 consists of a colorless and transparent synthetic resin which has flexibility and translucency, and in this embodiment, the resin sheet | seat which consists of a polyethylene resin (Polyethylene: Abbreviation "PE"), and ethylene-vinyl acetate copolymer This is realized by a resin sheet having a multilayer structure in which a plurality of resin sheets made of resin (ethylene vinyl acetate: abbreviation “EVA”) are laminated. The first sheet 10 is formed in a rectangular shape. In the present embodiment, the first sheet 10 is formed in a square of 900 mm in each of the dimensions A and B in the longitudinal direction Y and the lateral direction X in the front view of FIG. .2 mm. However, the shape of the 1st sheet | seat 10 is not limited to this, For example, a rectangle, a triangle, etc. may be sufficient and it may have thickness of 1.2 mm or more.

  A second sheet 11 is stacked on the first sheet 10. The second sheet 11 is made of a colorless and transparent synthetic resin having flexibility and translucency. In this embodiment, the second sheet 11 is realized by a resin sheet having a three-layer structure in which PE, EVA, and PE are laminated in this order. Is done. The second sheet 11 is formed in a rectangular shape in a developed state. In the present embodiment, the second sheet 11 is selected such that the dimension in the longitudinal direction Y is 840 mm, the dimension in the lateral direction X is 756 mm, and the dimension in the thickness direction is selected from 0.30 mm to 0.34 mm. However, the shape of the second sheet 11 is not limited to this.

  A reinforcing body 12 is provided between the first sheet 10 and the second sheet 11. The reinforcing body 12 has translucency and is formed of a synthetic resin that is harder and colorless and transparent than the first and second sheets 10 and 11. The reinforcing body 12 is composed of a plurality (8 in this embodiment) of reinforcing plates 12a, 12b, ..., 12h formed in a rectangular shape. The reinforcing plates 12 a to 12 h are provided in parallel, and are interposed between the first sheet 10 and the second sheet 11. In the present embodiment, the reinforcing plates 12a to 12h are made of a polycarbonate plate-like body, the dimension in the longitudinal direction Y is selected as 810 mm, the dimension in the lateral direction X is selected as 80 mm, and the dimension in the thickness direction is 2 mm. To be elected.

  A third sheet 13 is provided between the first sheet 10 and the reinforcing body 12. The third sheet 13 is made of a colorless and transparent synthetic resin having flexibility and translucency. In the present embodiment, the third sheet 13 is realized by a resin sheet having a three-layer structure similar to the second sheet 11. The third sheet 13 is formed in a rectangular shape in a developed state. The third sheet 13 has the same vertical dimension Y and horizontal dimension X as the first sheet 10.

  The first sheet 10 and the third sheet 13 are welded to each other by, for example, welder welding using an ultrasonic heating welding apparatus. Specifically, the 1st sheet | seat 10 and the 3rd sheet | seat 13 are 5 mm wide in a peripheral part, and are welded mutually by welder welding over the perimeter.

  Each of the reinforcing plates 12a to 12h extends between two side portions forming a pair on one side of the first or third sheet 10 and 13 and extending from each side portion forming a pair on the other side. They are arranged in parallel at intervals in the direction. As shown in FIG. 1, in the present embodiment, each reinforcing plate 12 a to 12 h is provided with one end in the longitudinal direction from one end in the longitudinal direction Y of the third sheet 13. The reinforcing plates 12a to 12h are arranged in parallel at equal intervals in the lateral direction X with respect to the center line L1 of the insulating cover body 1.

  You may stick the seal | sticker 20 on which the character which alerts an operator's attention was printed on the surface part which faces the 2nd sheet | seat 11 of each reinforcement board 12a-12h. In the present embodiment, a seal 20 is affixed to the central part of the reinforcing plates 12b to 12g, thereby displaying a message “Danger during power transmission!”.

  The second sheet 11 is provided on the other surface side opposite to the one surface on which the third sheet 13 of the reinforcing body 12 is provided. The second sheet 11 has a surface area slightly larger than the surface area of the reinforcing body 13 and is provided so as to cover the entire other surface of the reinforcing body 12. The 2nd sheet | seat 11 is 4 mm wide in a peripheral part, and is welded with the 3rd sheet | seat 13 by the welder welding to the 3rd sheet | seat 13 over the perimeter. Moreover, the 2nd sheet | seat 11 is welded by the 3rd sheet | seat 13 and welder welding between each reinforcement board 12a-12h. Therefore, the third sheet 13 and the second sheet 11 are welded to each other so as to surround the reinforcing plates 12a to 12h. As a result, the movement of the reinforcing plates 12a to 12h is prevented, and the reinforcing plates 12a to 12h can always be maintained in parallel.

  As described above, when the first sheet 10 and the third sheet 13 are welded and the second sheet 11 and the third sheet 13 are welded, the insulating cover body 1 has three sides, and is concave in front view. The peripheral edge 21 is formed. A substantially annular rivet member 22 is attached to the four corners of the peripheral portion 21 and an intermediate portion between the corners, and a through hole 23 is formed at the center thereof.

  The main body exposed on the third sheet 13 of the rivet member 22 is sandwiched between a pair of base sheets 24a and 24b. The base sheets 24a and 24b are made of a synthetic fiber cloth made of EVA, and the base sheets 24a and 24b are welded to the third sheet 13, respectively. Thereby, electrical insulation is ensured in the rivet member 22 portion of the insulating cover body 1.

  According to the present embodiment, the insulating cover body 1 includes a first sheet 10 made of a synthetic resin having flexibility and translucency, a second sheet 11 having flexibility and translucency, A plate-like reinforcing body 12 which is interposed between the second sheets 10 and 11 and has a light transmitting property and is made of a synthetic resin harder than the first and second sheets 10 and 11, and the first sheet 10 and the reinforcing body Since it is comprised by the 3rd sheet | seat 13 which is interposed between 12 and consists of a synthetic resin which has flexibility and translucency, it has translucency.

  Thereby, even if the insulating cover body 1 is attached to an attachment object such as a current-carrying part, the operator can visually recognize the attachment object from the outside, and can confirm the type and type of the attachment object. . Therefore, work efficiency such as electrical work can be improved.

  Moreover, since the insulating cover body 1 has the plate-shaped reinforcement body 12 which consists of a synthetic resin harder than the 1st-3rd sheet | seat 10,11,13, even if the insulating cover body 1 etc. contact, this tool Does not contact the object to be attached beyond the reinforcing body 12. Therefore, sufficient strength of the insulating cover 1 can be ensured, and damage to the current-carrying part due to contact with a tool or the like can be prevented.

  Further, according to the present embodiment, the reinforcing body 12 includes a plurality of reinforcing plates 12a to 12h formed in a rectangular shape, and the reinforcing plates 12a to 12h are parallel to each other of the first and second sheets 10 and 11, respectively. Among the pair of side portions, the side portions that are paired on one side are arranged in parallel at intervals in the extending direction of the side portions that are paired on the other side.

  Thereby, the insulating cover body 1 can be bent between the reinforcing plates 12a to 12h. Therefore, even if the object to be attached has a rectangular shape or a curved surface shape, the insulating cover body 1 can be bent and attached.

  Further, according to the present embodiment, the insulating cover body 1 includes the third sheet 13. Thereby, the electrical insulation of the insulating cover body 1 can be further improved.

  In the above description, the case where the insulating cover 1 is constituted by three sheets has been described. However, the second sheet 11 and the first sheet 10 are welded without providing the third sheet 13. May be. In this case, the first sheet 10 also serves as the third sheet 13.

  Next, an insulating cover body 30 according to a second embodiment of the present invention will be described. FIG. 4 is a front view of the insulating cover body 30 according to the second embodiment, and FIG. 5 is an enlarged cross-sectional view as seen from the cutting plane line VV in FIG.

  The insulating cover body 30 has a configuration similar to that of the insulating cover body 1. The insulating cover body 30 is formed in a rectangular shape when viewed from the front. As with the insulating cover body 1, the insulating cover body 30 includes first to third sheets 31, 32, 34 and a reinforcing body 33. The first to third sheets 31, 32, and 34 are formed in the same manner as the first to third sheets of the first embodiment except that their surface shapes are formed in a rectangular shape, and thus description thereof is omitted. The reinforcing body 33 is the same as the reinforcing body 12 of the first embodiment except that the dimension in the longitudinal direction is different.

  The dimension P in the longitudinal direction Y of the second sheet 34 is selected to be slightly larger than the dimension in the longitudinal direction Y of the reinforcing body 12, and the dimension Q in the lateral direction X is the dimension in the lateral direction X of the reinforcing body 12. Is chosen to be a slightly larger value.

  In the present embodiment, the reinforcing body 33 is provided at the center of the third sheet 34. The second sheet 32 is welded to the third sheet 34 over the entire periphery of the periphery of the reinforcing body 33. Moreover, the 2nd sheet | seat 32 is welded with the 3rd sheet | seat 34 along the long side of each reinforcement board 33a-33h between each reinforcement board 33a-33h. Accordingly, the insulating cover body 30 is formed with a rectangular peripheral edge 35 that surrounds the reinforcing body 33. Rivet members 22 similar to the insulating cover body 1 are provided at the four corners of the peripheral edge 35.

  The peripheral portion 35 is provided with a planar fastener sheet 36 that can be attached to each other with respect to the center line L2. More specifically, the peripheral portion 35a1 (left side in FIG. 4) along one short side of the insulating cover body 30 and the peripheral portions 35b1 and 35b2 along the long side are divided into two equal parts by the center line L2. Sometimes, a pair of peripheral edge portions 35b1L and 35b2L arranged on the one (left) side is provided with a female fastener sheet 36a. In addition, a pair of peripheral portions 35a2 (on the right in FIG. 4) along the other short side and peripheral portions 35b1 and 35b2 along the long side, which are divided into two at the center line L2, are arranged on the other side. Male fastener sheets 36b are provided on the peripheral portions 35b1R and 35b2R.

  The fastener sheets 36a and 36b are sewn and fixed to a base sheet 37 made of synthetic fiber cloth. The fastener sheets 36 a and 36 b are attached to the third sheet 34 by welding the base sheet 37 to the third sheet 34. By adopting such a configuration, the insulating cover body 30 can be formed into a cylindrical shape by attaching the fastener sheets 36a and 36b to each other. Therefore, for example, even when the energizing portion is cylindrical, the entire periphery can be covered by the insulating cover body 30.

  In the above description, the case where the insulating cover body 30 is configured by the three sheets 31, 32, 34 has been described. However, the second sheet 32 and the first sheet 31 are welded without providing the third sheet 34. It may be configured to. In this case, the first sheet 31 also serves as the third sheet 34.

  FIG. 6 is a view showing a state in which the insulating cover body 1 is attached. As shown in FIG. 6, the insulating cover body 1 is attached to a support 5 provided in the vicinity of a current-carrying portion (not shown) by inserting a cord 6 such as a string through a rivet member 22. Moreover, you may attach the insulating cover body 1 upright against an electricity supply part. Alternatively, the insulating cover body 1 may be installed by attaching a hook member to the rivet member 22 and attaching the hook member to the column 5 or the like.

  Thus, by attaching the insulating cover body 1 to the current-carrying part, the current-carrying part is covered with the insulating cover body 1, and the operator is prevented from coming into contact with the current-carrying part. Further, the contact of the working tool or the like prevents the energized portion from being damaged.

DESCRIPTION OF SYMBOLS 1 Insulation cover body 5 Strut 6 Strip 10 1st sheet 11 2nd sheet 12 Reinforcement body 12a Reinforcement board 13 3rd sheet 20 Seal 21 Peripheral part 22 Rivet member 23 Through-hole 24a, 24b Base sheet 30 Insulation cover body 31 1st Sheet 32 Second sheet 33 Reinforcing body 34 Third sheet 35 Peripheral part 36 Fastener sheet 37 Base sheet

Claims (4)

A first sheet made of a synthetic resin having flexibility and translucency;
A second sheet made of a synthetic resin having flexibility and translucency, and stacked on the first sheet;
An insulating cover body comprising a plate-shaped reinforcing body that is translucent and made of a synthetic resin harder than the first and second sheets and interposed between the first and second sheets. The first and second sheets are formed in a rectangular shape in an unfolded state by at least peripheral edges being joined to each other.
The reinforcing body is composed of a plurality of reinforcing plates formed in a rectangular shape,
The reinforcing plates are spaced apart from each other in the direction in which the side portions forming the pair on the other side and the side portions forming the pair on the other side are extended between the two parallel side portions of the first or second sheet. The insulating cover body according to claim 1, wherein the insulating cover bodies are arranged in parallel.   The insulating cover body according to claim 1 or 2, further comprising a third sheet made of a synthetic resin having flexibility and translucency and interposed between the first sheet and the reinforcing body.   The insulation according to any one of claims 1 to 3, wherein a planar fastener sheet that can be attached to each other is provided on each side portion that forms a pair in at least one of the second sheets. Cover body.

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