JP5312624B2 - Insulation cover - Google Patents

Description

  The present invention relates to an insulating cover attached by an indirect hot wire method or a direct hot wire method.

  For example, an insulating cover is attached to a sleeve for connecting wires to ensure insulation (see, for example, Patent Document 1). In some insulating covers, a first cover body and a second cover body can be opened and closed via a hinge. That is, a fitting hole is provided in the opening edge of the first cover body, and a first rib extending along the opening edge is provided inside the fitting hole. On the other hand, a fitting hook is provided at the opening edge of the second cover body, and a second rib extending along the opening edge is provided inside the fitting hook.

  Then, when the first cover body and the second cover body are closed, the fitting hook is fitted into the fitting hole and a part is exposed to the outside, and the second rib is more than the first rib. It is located inside (the first rib is located between the opening edge of the second cover body and the second rib). Moreover, putty (adhesive) for joining with a sleeve and an electric wire is arrange | positioned on the inner surface of such an insulation cover.

JP 2010-074936 A

  By the way, in recent years, in order to further secure safety, an indirect hot wire method of performing work while using an indirect hot wire tool (hot stick / insulating bar) while being energized has been widely adopted. . However, in the indirect hot wire method, since a long rod-shaped indirect hot wire tool is used, it is difficult for an operator to accurately visually recognize an attachment target (such as an insulating cover) positioned at the tip of the indirect hot wire tool.

  In addition, the insulating cover as described above has the same color (for example, black) as a whole, and it is difficult to visually identify the fitting hook, the second rib, and the like. For this reason, when the insulating cover is attached by the indirect hot wire method, whether or not the fitting hook is correctly fitted in the fitting hole, and the first cover between the second cover main body and the second rib. It may be difficult to visually check whether or not the ribs are correctly positioned, and proper attachment and work may not be performed. Moreover, since the putty is provided on the inner surface of the insulating cover, it is not only difficult to remove the insulating cover when the insulating cover fails to be installed, but the removed insulating cover cannot be reused. Was wasted.

  Accordingly, an object of the present invention is to provide an insulating cover that can be appropriately and easily attached by an indirect hot wire method or the like.

  In order to solve the above-mentioned problems, the invention of claim 1 is characterized in that a first cover body and a second cover body which are freely openable and closable via a hinge, and a fitting provided at an opening edge of the first cover body. A fitting hole, a first rib provided on the inner side of the fitting hole and extending along the opening edge, and a fitting edge provided on the opening edge of the second cover body. A fitting hook partially exposed to the outside, provided inside the fitting hook, extending along the opening edge, and closing the first cover body and the second cover body. And a second rib positioned inside the first rib in a state where the color of the fitting hook is different from the color around the fitting hole, and the color of the first rib is the fitting. It is an insulating cover characterized by being different in color from the mating hook and the second rib.

  According to the present invention, with the first cover body and the second cover body opened, the first cover body and the second cover body are applied to an attachment object (sleeve or the like) with an indirect hot wire tool, for example. Close the cover body. At this time, since the color of the first rib is different from the color of the fitting hook, for example, when the first rib is mistakenly positioned on the front side of the fitting hook, this can be easily visually observed from a distance. It becomes. In addition, since the color of the first rib is different from the color of the second rib, for example, if the first rib is mistakenly positioned on the back side (inside) of the second rib, even if it is far away. Easily visible. Furthermore, when the mating hook is fitted into the mating hole, part of the mating hook is exposed to the outside, and the mating hook is different from the color around the mating hole. Whether or not the hole is correctly fitted can be easily visually confirmed even from a distance.

  According to a second aspect of the present invention, in the insulating cover according to the first aspect, only the colors of the fitting hook and the second rib are different from the colors of the other portions.

  According to the invention of claim 1, when the first rib is mistakenly located on the front side of the fitting hook, or when the first rib is mistakenly located on the back side of the second rib, etc. This can be easily seen from a distance, and it can be easily seen from a distance whether or not the fitting hook is correctly fitted in the fitting hole. For this reason, it is possible to attach the insulation cover properly and easily while checking the installation process even when using a long bar-shaped indirect hot wire tool. Can be shortened. In addition, as a result of properly attaching the insulating cover, it is possible to prevent the cover from being wasted due to a mounting failure.

  In addition, since visibility is improved, there is no need to inadvertently approach high voltage lines, etc., and safety is improved. Can be performed easily, quickly and appropriately from the ground. In addition, since it is only necessary to change the color, this insulating cover can be manufactured easily and at low cost by utilizing existing and existing covers.

  According to invention of Claim 2, since only the color of a fitting hook and a 2nd rib differs from the color of another part, this insulation cover can be manufactured more easily and at low cost. That is, only the fitting hooks and the second ribs of the existing and existing covers that are the same color as a whole can be manufactured with different colors, and can be manufactured more easily and at low cost.

It is a front view which shows the state which closed the insulating cover which concerns on embodiment of this invention. It is a top view which shows the state which opened the insulating cover of FIG. They are AA sectional drawing (a) of FIG. 2, and BB sectional drawing (b) of FIG. It is a front view which shows the state in the middle of closing the insulating cover of FIG. 1 correctly. It is a front view which shows the state in the middle of closing the insulating cover of FIG. 1 accidentally. It is a front view which shows the state which closed the insulation cover of FIG. 1 correctly.

  The present invention will be described below based on the illustrated embodiments.

  1 and 2 are a front view showing a state in which the insulating cover 1 according to the embodiment of the present invention is closed and a plan view showing the opened state. The insulating cover 1 is a cover that covers a sleeve (not shown) that connects the electric wires 100 and a connecting end portion of the electric wire 100, and is attached by an indirect hot wire tool or the like. Here, in this embodiment, the case where it attaches using an indirect hot wire tool is mainly demonstrated. Moreover, an indirect hot wire tool is a tool used in the indirect hot wire method of performing work in an energized state, that is, a tool for performing work without an operator directly contacting the electric wire 100 or the electric equipment. A variety of operations and operations can be performed by attaching various tip tools (such as Yatco) to the common joint and tip of a long common operation rod.

  The insulating cover 1 is made of an electrical insulating material, and includes a first cover body 2 and a second cover body 3 that can be opened and closed and rotated via a hinge 1a. As shown in FIG. 3, the cover main bodies 2 and 3 are both semicircular in cross section and formed so that the entire insulating cover 1 is substantially cylindrical when closed.

  A plate-like first flange extending along the edge perpendicular to the arc of the first cover body 2 is provided on the opening edge (opening edge) of the first cover body 2 on the opening side (the anti-hinge 1a side). 21 is formed, and a plurality of (three in this embodiment) fitting holes 22 each having a square hole shape are formed in the first flange 21. Further, at the same end edge of the first cover main body 2, a pleated first rib 23 extending along the end edge is provided inside the fitting hole 22 (center side of the first cover main body 2). Is formed.

  A plate-shaped second flange extending along the edge perpendicular to the arc of the second cover main body 3 is provided at the end edge (opening end edge) of the second cover main body 3 on the opening side (the anti-hinge 1a side). 31 is formed, and a plurality of (three in this embodiment) fitting hooks 32 are formed on the second flange 31. The fitting hook 32 is a claw having a substantially rectangular base end and a substantially trapezoidal tip, and is formed and disposed so as to be fitted into the fitting hole 22 by closing the cover main bodies 2 and 3. As shown in FIG. 3B, the tip (part) is exposed to the outside when fitted.

  Further, a pleated second rib 33 extending along the opening edge is formed on the inner side (center side of the second cover main body 3) of the fitting hook 32 of the second cover main body 3. . As shown in FIG. 3B, the second rib 33 is positioned on the inner side (center side of the insulating cover 1) than the first rib 23 with the cover main bodies 2 and 3 closed. That is, it is formed and arranged so that the first rib 23 is positioned between the fitting hook 32 and the second rib 33.

  A plurality of putties (adhesive, not shown) for joining the sleeve and the electric wire 100 are disposed on the inner surfaces of the cover bodies 2 and 3. Furthermore, a flat grip portion 24 is formed on the second collar 31.

  Such an insulating cover 1 has a configuration equivalent to that of a ready-made / existing insulating cover, and the whole is colored black. And only the surface of each fitting hook 32 and the 2nd rib 33 is colored white. Thereby, the color of the fitting hook 32 is different from the color around the fitting hole 22, and the color of the first rib 23 is different from the colors of the fitting hook 32 and the second rib 33.

  Next, the mounting method and operation of the insulating cover 1 having such a configuration will be described.

  First, in a state where the first cover body 2 and the second cover body 3 are opened, the gripping portion 24 is gripped by the tip tool of the indirect live tool, and the operator holds the lower end portion of the indirect live tool. The central portion of the second cover body 3 is disposed on the sleeve (temporarily fixed with a putty). In this state, while confirming that the first rib 23 is positioned between the fitting hook 32 and the second rib 33 and each fitting hook 32 is fitted into the fitting hole 22, The first cover body 2 is tilted toward the second cover body 3 with a tool and closed. At this time, since only the fitting hooks 32 and the second ribs 33 are white and the other parts are all black, they are arranged and operated correctly according to the coloring pattern and color condition (pattern and drawing represented by the color). Check whether or not

  In other words, when it is about to close properly, the fitting hook 32 is just before fitting into the fitting hole 22, and as shown in FIG. The second rib 33 extends linearly and appears white. On the other hand, when a part of the first rib 23 is mistakenly positioned on the front side of the part of the fitting hooks 32, part of the parts (the right side and the center in the figure) are fitted as shown in FIG. The hook 32 becomes invisible. Similarly, for example, when the first rib 23 is mistakenly positioned on the back side of the second rib 33, the second rib 33 looks white and large in a plate shape.

  Further, when all the fitting hooks 32 are properly fitted in the fitting holes 22 and the cover main bodies 2 and 3 are properly closed, as shown in FIG. Appears to be white. On the other hand, when the cover main bodies 2 and 3 are not properly closed, for example, the front ends of some of the fitting hooks 32 are hidden behind the first cover main body 2 and cannot be seen. As described above, the insulating cover 1 is attached by closing the cover bodies 2 and 3 while confirming the attaching process with the colored pattern.

  As described above, according to the insulating cover 1, since the whole is black and only the fitting hooks 32 and the second ribs 33 are colored white, the first ribs 23 are mistakenly attached to the fitting hooks 32. If the first rib 23 is mistakenly positioned on the back side of the second rib 33, etc., the coloring pattern makes it easy and accurate for the operator from a distance. Becomes visible. Similarly, whether or not the fitting hook 32 is being properly fitted into the fitting hole 22 and further whether or not the fitting hook 32 is correctly fitted can be easily and accurately visually confirmed from a distance by the colored pattern.

  For this reason, even if it uses a long rod-shaped indirect hot wire tool, it becomes possible to prevent the attachment mistake and to attach the insulating cover 1 appropriately and easily. The power outage time can be shortened by energizing the battery early. In addition, as a result of properly attaching the insulating cover 1, waste of the insulating cover 1 due to attachment failure can be prevented.

  Further, since the visibility is improved, it is not necessary for the operator to carelessly approach the high-voltage line / electric wire 100, and safety is improved. In addition, since it is possible to easily and accurately visually check whether the insulating cover 1 is correctly attached even from a distance, it is possible to easily and appropriately perform confirmation and inspection after the attachment from the ground. Moreover, the present insulating cover 1 can be manufactured easily and at low cost simply by coloring only the fitting hooks 32 and the second ribs 33 of the ready-made and existing insulating covers into white.

  Although the embodiment of the present invention has been described above, the specific configuration is not limited to the above embodiment, and even if there is a design change or the like without departing from the gist of the present invention, Included in the invention. For example, in the above embodiment, the fitting hook 32 and the second rib 33 are the same color, but depending on the coloring of other parts such as the first cover body 2 and the background color of the mounting location. Thus, the fitting hook 32 and the second rib 33 may have different colors. Further, the fitting hook 32 and the second rib 33 may be colored in a fluorescent color, so that it can be easily and properly visually recognized at night.

  Furthermore, in the above embodiment, the fitting hook 32 and the second rib 33 are colored, but other portions may be colored according to the background color of the mounting location, the working environment, and the like. That is, the color of the fitting hook 32 is different from the color around the fitting hole 22 and the color of the first rib 23 is different from that of the fitting hook 32 and the second rib 33 so that the above visual effect can be obtained. It only has to be different from the color. For example, when the whole is black, the periphery of the first brim 21 of the first cover body 2 (the portion where the tip of the fitting hook 32 is exposed) and the first rib 23 are colored in white, The first cover body 2 side overall (upper half) and the second cover body 3 side overall (lower half) may be different colors.

  Moreover, it is applicable not only to the above insulating covers 1 but also to other insulating covers such as a retaining clamp cover for insulating a retaining clamp of a high-voltage distribution line. Furthermore, the present invention is not limited to the indirect hot wire method, but can also be applied to a direct hot wire method in which an operator wears a high-pressure rubber glove or the like to perform work.

DESCRIPTION OF SYMBOLS 1 Insulation cover 1a Hinge 2 1st cover main body 21 1st collar 22 Fitting hole 23 1st rib 3 2nd cover main body 31 2nd collar 32 Fitting hook 33 2nd rib 100 Electric wire

Claims (2)

A first cover body and a second cover body which can be opened and closed via a hinge;
A fitting hole provided in an opening edge of the first cover body;
A first rib provided on the inner side of the fitting hole and extending along the opening edge;
A fitting hook that is provided at an opening edge of the second cover body and that is fitted into the fitting hole and partially exposed to the outside;
It is provided inside the fitting hook, extends along the opening edge, and is located inside the first rib in a state where the first cover body and the second cover body are closed. A second rib,
An insulating cover, wherein a color of the fitting hook is different from a color around the fitting hole, and a color of the first rib is different from colors of the fitting hook and the second rib. 2. The insulating cover according to claim 1, wherein only the color of the fitting hook and the second rib is different from the color of other portions.

Images