JPH0641334U - Insulation cover - Google Patents

Abstract

(57) [Summary] [Purpose] To provide an insulating cover that can be easily attached to a high-voltage overhead distribution line by one worker using one indirect live-wiring tool. [Structure] A rib 21 for creeping line breakage is provided on an inner peripheral surface of a casing 7 that is integrally bisected and is urged to be closed, and a locking step portion 21a is formed on the rib 21. A projecting piece is formed on the inner peripheral surface of the casing 7, and the projecting piece has a retractable opening stay 2
Put on. The opening stay 2 is composed of a pedestal, a support plate 5 and an L-shaped connecting member, and the support plate 5 is rotatable with respect to the pedestal fixed to the projection piece. When the support plate 5 is upright, the tip of the support plate 5 is rib 21.
The casing 7 is maintained in the open state by coming into contact with the locking stepped portion 21a. [Effect] By simply lowering the open insulating cover 1 positioned above the connecting portion of the overhead distribution line, the supporting plate 5 of the opening stay 2 is disengaged from the locking step 21a of the rib 21, and the casing 7 is removed. Block. Therefore, the work of mounting the insulating cover 1 is simplified.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an insulating cover suitable for being attached to a connecting portion, a towing portion, a branch portion, or the like of an overhead distribution line.

[0002]

[Prior art]

 Conventionally, as this type of insulating cover, a half-cylindrical shape made of an insulating material such as plastic has been widely used. When attaching this insulation cover to the connection part of the overhead distribution line, etc., an operator with insulating gloves on both hands covers the connection part of the overhead distribution line with the insulation cover open, and then attach it. It is necessary to attach the insulation cover by closing it. In particular, in the case of a high voltage (eg, 6600V) overhead distribution line, in order to ensure the safety of the operator, the mounting work is performed by remote control from a place slightly away from the overhead distribution line. At this time, in order to hold the insulating cover in an open state, one or two workers used two predetermined indirect hot-wiring tools.

[0003]

[Problems to be solved by the device]

 However, in this case, when one worker carries out the work of mounting the insulating cover by using the two indirect live-line tools, the remote operation which necessarily requires skill is required. In addition, when two workers use the indirect live-wiring tools one at a time to install the insulating cover, the two workers will collaborate, so the two workers' breath will come together. Without this, there was the inconvenience that smooth installation work could not be expected.

In view of the above-mentioned circumstances, the present invention allows a person who is not a skilled person to easily attach a single indirect live-wiring tool to a high-voltage overhead distribution line alone (without the need for a collaborator). The purpose is to provide an insulating cover.

[0005]

[Means for Solving the Problems]

 That is, the insulating cover (1) according to the present invention has a casing (7) that is integrally bisected and biased so as to be closed, and a retractable opening stay (2) is attached to the casing. It is provided so that it can be held in an open state.

In addition, the insulating cover (1) according to the present invention has a casing (7) which is integrally bisected and biased so as to be closed, and a rib (21) is provided on an inner peripheral surface of the casing. However, a retractable opening stay (2) having a locking step (21a) formed on the rib and having a pedestal (3) and a support plate (5) rotatably supported by the pedestal is provided. The support plate is mounted on the casing via the pedestal in a state where the tip of the support plate abuts on the locking step portion of the rib while the support plate is upright so that the case can be maintained in the open state. It

The numbers in parentheses are for convenience of representing corresponding elements in the drawings, and the present invention is not limited to the description in the drawings. The same applies to the "Claims for utility model registration" and "Action" columns.

[0008]

[Action]

 With the above-mentioned configuration, according to the present invention, when the open insulating cover (1) positioned above the connecting portion of the overhead distribution line is lowered, the retractable open stay (2) falls and the casing (7). ) Acts to block.

[0009]

【Example】

 Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a perspective view showing an embodiment of an insulating cover according to the present invention, FIG. 2 is a left side view of the insulating cover shown in FIG. 1, and FIG. 3 is a left side showing a state in which the insulating cover shown in FIG. 1 is opened. FIG. 4 is an enlarged perspective view of the opening stay forming the insulating cover shown in FIG. 1, FIG. 5 is a view showing a state where the opening stay shown in FIG. 4 is fixed to a casing, and FIG. 6 is an insulating view shown in FIG. FIG. 7 is a bottom view showing a state in which the cover is attached to the connection portion of the overhead distribution line, and FIG. 7 is a rear view of the insulating cover shown in FIG.

As shown in FIG. 1, the insulating cover 1 according to the present invention has a casing 7 made of a flexible material such as a soft synthetic resin, which is made of a flexible material, and the casing 7 is normally formed as shown in FIG. As shown in FIG. 3, it is in a closed state due to its elasticity, but as shown in FIG. 3, it can also be elastically deformed about the axial center CT1 of the back portion 7a and opened. Two wire ports 10 and 11 for overhead distribution lines are formed near the back portion 7a of the casing 7, and a wire port 12 for pulling down wire is provided in the casing 7 portion below the wire port 11 in FIG. Are formed. Two buttons 14 and 15 are projectingly provided on the casing 7 portion on the left side of FIG. 1 of the electric wire port 12, and button holes 16 and 17 are formed so that these buttons 14 and 15 are fitted and engaged, respectively. On the outside of the casing 7 corresponding to the buttons 14 and 15, as shown in FIG. 7, there is formed a non-slip portion 29 composed of a plurality of fine wires protruding in a horizontally extending manner. There is. Further, as shown in FIG. 3, a button 19 is provided on a portion of the casing 7 below the electric wire port 10 in FIG. 1, and a button hole 20 into which the button 19 is fitted and engaged is formed. As shown in FIGS. 1 and 7, the outside of the casing 7 corresponding to the button 19 and the button hole 20 is a slip stopper made of a plurality of thin wires protruding horizontally. Portions 26 and 27 are formed. Further, as shown in FIG. 3, ribs 21 for creeping lines are formed along the outer edge of the inner peripheral surface of the casing 7.

By the way, a protrusion piece 9 is integrally formed on the inner peripheral surface of the casing 7 as shown in FIG. 6, and the protrusion piece 9 has a casing 7 as shown in FIGS. 5 and 6. A retractable opening stay 2 made of a hard synthetic resin (for example, polypropylene) for holding the open state is provided. As shown in FIG. 4, the opening stay 2 includes a pedestal 3, a support plate 5, and an L-shaped connecting member 6. That is, an engaging hole 3a is formed in a substantially central portion of the pedestal 3 of the opening stage 2, and the pedestal 3 is attached to the casing 7 in such a manner that the engaging hole 3a is fitted and engaged with the projecting piece 9. It is fixed. A support plate 5 is rotatably supported on the pedestal 3 around the axis CT2 in the directions of arrows C and D in FIG. 5, and an L-shaped connecting member 6 is provided between the pedestal 3 and the support plate 5. However, it is provided so as to determine a position for stably holding the support plate 5 with respect to the pedestal 3. That is, the support member 5 is stably held by the connecting member 6 with respect to the pedestal 3 at two stable holding positions POS1 and POS2. As shown in FIGS. 3 and 6, a locking step portion 21a is formed in a part of the rib 21, and the support plate 5 is provided with a stable holding position POS2 as shown by an imaginary line in FIG. In the state of being positioned at, the tip of the support plate 5 abuts on the locking step portion 21a, and the opened state of the casing 7 can be maintained. Since the projection 5a is formed at the tip of the support plate 5, the tip of the support plate 5 does not shift laterally and come off from the locking step 21a.

Since the insulation cover 1 according to the present invention has the above-mentioned structure, one worker can attach the insulation cover 1 to the connection portion of a high voltage (eg, 6600 V) overhead distribution line. Performs the mounting operation in the following procedure using one of the specified indirect live-wiring tools from a location slightly away from the overhead distribution line.

That is, first, after opening the casing 7 of the insulating cover 1, the support plate 5 of the opening stay 2 is positioned at the stable holding position POS2 and brought into contact with the locking stepped portion 21a of the rib 21. The open state of 7 (state shown in FIG. 3) is maintained.

In this state, the insulative cover 1 is gripped by an indirect hot-line tool, the insulative cover 1 is moved above the connecting portion of the overhead distribution line, and then the insulative cover 1 is lowered. Then, the support plate 5 that had supported the casing 7 at the stable holding position POS2 until then fell in the direction of arrow C around the axis CT2 while being pressed by the overhead distribution line, as shown by the solid line in FIG. Then, the casing 7 is positioned at the stable holding position POS1, and the casing 7 is elastically deformed and closed accordingly. FIG. 6 shows a state immediately before the casing 7 is closed, and the connecting portion 25 of the overhead power distribution line 23 is covered with the insulating cover 1. At this time, the overhead distribution line 23 goes in and out of the insulating cover 1 through the wire ports 10 and 11, and the down line 24 goes in and out of the insulating cover 1 through the wire port 12.

Next, by operating the indirect live-wiring tool, the buttons 14 and 15 of the insulating cover 1 are fitted and engaged in the button holes 16 and 17, respectively, and the button 19 is fitted and engaged in the button hole 20. , The casing 7 is completely closed (state shown in FIG. 2). At this time, an anti-slip portion 29 is formed on the outside of the casing 7 corresponding to the buttons 14 and 15, and an anti-slip portion 26 and 27 is provided on the outside of the casing 7 corresponding to the button 19 and the button hole 20, respectively. As a result, the above-described fitting engagement operation is smoothly performed without slipping of the indirect hot-line tool. At this point, the mounting operation of the insulating cover 1 to the connection portion of the high voltage overhead distribution line is completed.

As described above, when mounting the insulating cover 1, it is sufficient to lower the insulating cover 1 in the opened state and insert the buttons 14, 15, and 19 into the button holes 16, 17, and 20, respectively. It is possible to simplify the work of mounting the insulating cover 1. Further, since such a simple operation is performed, even an unskilled person can perform the mounting operation properly (and alone) by using one indirect live-wiring tool properly and safely.

[0018]

[Effect of device]

 As described above, according to the present invention, the casing 7 is provided with the casing 7 which is bisected and is urged so as to be closed, and the casing 7 is provided with the retractable opening stay 2 which holds the casing 7 in the opened state. Since it is provided in such a manner that it can be installed, it is only necessary to lower the open insulating cover 1 positioned above the connecting portion 25 of the overhead distribution line 23 and the like, and the collapsible open stay 2 is collapsed to cause the casing 7 to fall. Since it is blocked, it is possible to provide an insulating cover 1 that can be easily installed by a single person without using an indirect live-wiring tool. Significantly improved.

Further, according to the present invention, the casing 7 has a halved casing 7 that is biased so as to be closed, a rib 21 is provided on an inner peripheral surface of the casing 7, and a step portion is locked to the rib 21. 21a is formed, and the tip end of the support plate 5 is in the state where the support plate 5 is erected in a retractable opening stay 2 having a base 3 and a support plate 5 rotatably supported with respect to the base 3. Since the casing 7 is attached to the casing 7 via the pedestal 3 in such a manner that the rib 21 can be brought into contact with the locking step portion 21a to maintain the opened state of the casing 7, the connecting portion 25 of the overhead distribution line 23, etc. Since the supporting plate 5 of the opening stay 2 is disengaged from the locking step portion 21a of the rib 21 and the casing 7 is closed only by lowering the insulating cover 1 in the open state, which is positioned above, the unskilled person is required. Even if you live alone for one It is possible to provide the insulating cover 1 that can be easily mounted using a wire tool, and workability when mounting the insulating cover 1 is significantly improved.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of an insulating cover according to the present invention.

FIG. 2 is a left side view of the insulating cover shown in FIG.

FIG. 3 is a left side view showing a state in which the insulating cover shown in FIG. 1 is opened.

FIG. 4 is an enlarged perspective view of an opening stay forming the insulating cover shown in FIG.

5 is a view showing a state in which the opening stay shown in FIG. 4 is fixed to a casing.

FIG. 6 is a bottom view showing a state in which the insulating cover shown in FIG. 1 is attached to the connection portion of the overhead distribution line.

7 is a rear view of the insulating cover shown in FIG.

[Explanation of symbols]

 1 ... Insulating cover 2 ... Opening stay 3 ... Pedestal 5 ... Support plate 7 ... Casing 21 ... Rib 21a ... Locking step

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Hiroyuki Yoshihara, 1 Higashishin-cho, Higashi-ku, Nagoya, Aichi Chubu Electric Power Co., Inc. (72) Inventor, Morino Sora, 213 Ueda Nishi 2-chome, Tenhaku-ku, Nagoya, Aichi Local Maruho Industry Co., Ltd.

Claims (2)

[Scope of utility model registration request] 1. A casing (7) which is bisected and integrally biased so as to be closed is provided, and a retractable opening stay (2) is provided in the casing in a form capable of holding the casing in an open state. Insulated cover configured. 2. A casing (7) which is bisected and integrally biased so as to be closed, a rib (21) is provided on an inner peripheral surface of the casing, and a locking step portion (21a) is formed on the rib. Then, the tip end of the support plate is provided with the tip of the support plate in a state where the support plate stands upright, and the retractable opening stay (2) having the base (3) and the support plate (5) rotatably supported with respect to the base. An insulating cover configured to be attached to the casing via the pedestal in such a manner that the rib can be brought into contact with a locking step portion to maintain the opened state of the casing.