JP2017028751A - Mounting structure of insulating cover, mounting method of insulating cover and insulating cover - Google Patents

Mounting structure of insulating cover, mounting method of insulating cover and insulating cover Download PDF

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JP2017028751A
JP2017028751A JP2015141473A JP2015141473A JP2017028751A JP 2017028751 A JP2017028751 A JP 2017028751A JP 2015141473 A JP2015141473 A JP 2015141473A JP 2015141473 A JP2015141473 A JP 2015141473A JP 2017028751 A JP2017028751 A JP 2017028751A
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insulating cover
tool
connected member
tube
insulating
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JP6500662B2 (en
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昌治 領野
Seiji Ryono
昌治 領野
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Chugoku Electric Power Co Inc
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Chugoku Electric Power Co Inc
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Abstract

PROBLEM TO BE SOLVED: To provide a mounting structure of an insulating cover capable of covering a connection part of a tool for indirect hot line work and a connected member, and to provide a mounting method of the insulating cover, and the insulating cover.SOLUTION: The periphery of a connection part J of a tool 10 for indirect hot line work and a connected member 20 is covered with an insulating cover 30 constituted as a tube of an elastic body. The insulating cover 30 adheres to the tool 10 or the connected member 20 from a first direction D1 orthogonal to the central axis of the tube by an elastic force, and is separated from the tool 10 and the connected member 20 by being compressed from a second direction D2 orthogonal to the first direction D1 and the inner diameter in the first direction D1 is expanded.SELECTED DRAWING: Figure 3

Description

本発明は、絶縁カバーの取り付け構造、絶縁カバーの取り付け方法および絶縁カバーに関する。   The present invention relates to an insulating cover mounting structure, an insulating cover mounting method, and an insulating cover.

間接活線作業用の工具は、絶縁操作棒や油圧ホースなどの被接続部材に接続されて使用される。工具と被接続部材との接続部には、金属製のアダプターや接続金具などの金属部材が露出している。工具を高圧架線に接触させて作業を行うと、工具および接続部が充電状態となる(例えば、特許文献1,2参照)。   The tool for indirect hot wire work is used by being connected to a connected member such as an insulating operation rod or a hydraulic hose. Metal members such as metal adapters and connection fittings are exposed at the connection portion between the tool and the member to be connected. When work is performed with the tool brought into contact with the high-voltage overhead wire, the tool and the connecting portion are charged (for example, see Patent Documents 1 and 2).

特開2007−288867号公報JP 2007-288867 A 特開2015−015853号公報Japanese Patent Laying-Open No. 2015-015853

絶縁操作棒などを用いた作業は熟練を要し、十分に注意しないと感電事故が起こる可能性がある。特許文献1,2には、作業者が不用意に工具に触れないように、絶縁カバーによって表面が覆われた工具を用いて作業を行うことが記載されている。しかし、工具と被接続部材との接続部には、工具と被接続部材とをロックするためのロック機構が設けられているため、ロック操作を阻害しないように、接続部には絶縁カバーを設けることができない。   Work using insulation control rods requires skill, and if you are not careful enough, an electric shock may occur. Patent Documents 1 and 2 describe that work is performed using a tool whose surface is covered with an insulating cover so that an operator does not touch the tool carelessly. However, since a locking mechanism for locking the tool and the connected member is provided at the connecting portion between the tool and the connected member, an insulating cover is provided at the connecting portion so as not to hinder the locking operation. I can't.

本発明の目的は、間接活線作業用の工具と被接続部材との接続部を絶縁カバーで覆うことが可能な絶縁カバーの取り付け構造、絶縁カバーの取り付け方法および絶縁カバーを提供することにある。   An object of the present invention is to provide an insulating cover mounting structure, an insulating cover mounting method, and an insulating cover capable of covering a connecting portion between a tool for indirect hot-wire work and a connected member with an insulating cover. .

本発明の一態様に係る絶縁カバーの取り付け構造は、間接活線作業用の工具と、前記工具と接続された被接続部材と、前記工具と前記被接続部材との接続部の周囲を覆う絶縁カバーと、を有し、前記絶縁カバーは、弾性体のチューブとして構成され、前記絶縁カバーは、弾性力によって、前記チューブの中心軸と直交する第一の方向から前記工具または前記被接続部材に密着するとともに、前記第一の方向と直交する第二の方向から圧縮され前記第一の方向の内径が拡げられることにより、前記工具および前記被接続部材から分離される。   An insulating cover mounting structure according to an aspect of the present invention includes an indirect hot-wire work tool, a connected member connected to the tool, and an insulation covering a periphery of a connection portion between the tool and the connected member. The insulating cover is configured as an elastic tube, and the insulating cover is elastically applied to the tool or the connected member from a first direction orthogonal to the central axis of the tube. In addition to being in close contact with each other, it is separated from the tool and the member to be connected by being compressed from a second direction orthogonal to the first direction and expanding the inner diameter in the first direction.

この構成によれば、接続部の周囲を絶縁カバーによって容易に覆うことができる。そのため、接続部に作業者が接触することによる感電事故が抑制される。作業者は絶縁カバーを弾性変形させることにより絶縁カバーを接続部に容易に着脱することができる。そのため、間接活線作業の作業効率が向上する。   According to this configuration, the periphery of the connection portion can be easily covered with the insulating cover. Therefore, the electric shock accident by an operator contacting a connection part is suppressed. The operator can easily attach and detach the insulating cover to the connecting portion by elastically deforming the insulating cover. Therefore, the work efficiency of indirect hot-line work improves.

本発明の一態様に係る絶縁カバーの取り付け構造においては、例えば、前記絶縁カバーが前記第二の方向から圧縮されない状態で、前記チューブの中心軸と平行な方向における前記絶縁カバーの中央部は前記絶縁カバーの両端部よりも前記第一の方向に大きく膨らんでいる。   In the insulating cover mounting structure according to one aspect of the present invention, for example, in a state where the insulating cover is not compressed from the second direction, the central portion of the insulating cover in a direction parallel to the central axis of the tube is It swells larger in the first direction than both ends of the insulating cover.

この構成によれば、絶縁カバーと接続部とが強く密着することを抑制することができる。絶縁カバーと接続部とが強く密着していると、間接活線作業中の工具の動きによって接続部に力が加わり、工具が被接続部材から外れてしまう可能性がある。絶縁カバーと接続部との密着が弱ければ、絶縁カバーを介して接続部に力が加わることが抑制される。   According to this structure, it can suppress that an insulating cover and a connection part closely_contact | adhere closely. If the insulating cover and the connecting portion are in close contact with each other, a force is applied to the connecting portion due to the movement of the tool during the indirect hot wire operation, and the tool may be detached from the connected member. If the adhesion between the insulating cover and the connection portion is weak, the force applied to the connection portion through the insulating cover is suppressed.

本発明の一態様に係る絶縁カバーの取り付け構造においては、例えば、前記絶縁カバーが前記第二の方向から圧縮されない状態で、前記チューブの中心軸と平行な方向における前記絶縁カバーの中央部は前記接続部と接触していない。   In the insulating cover mounting structure according to one aspect of the present invention, for example, in a state where the insulating cover is not compressed from the second direction, the central portion of the insulating cover in a direction parallel to the central axis of the tube is There is no contact with the connection.

この構成によれば、絶縁カバーを介して接続部に力が加わることが抑制される。   According to this structure, it is suppressed that force is applied to a connection part via an insulating cover.

本発明の一態様に係る絶縁カバーの取り付け構造においては、例えば、前記絶縁カバーは、作業者が片手で握って前記第二の方向から圧縮できる大きさである。   In the insulating cover mounting structure according to one aspect of the present invention, for example, the insulating cover is sized so that an operator can hold it with one hand and compress it from the second direction.

この構成によれば、接続部への絶縁カバーの着脱を片手で容易に行うことができる。よって、間接活線作業の作業効率が向上する。   According to this configuration, the insulating cover can be easily attached to and detached from the connecting portion with one hand. Therefore, the work efficiency of the indirect hot line work is improved.

本発明の一態様に係る絶縁カバーの取り付け方法は、被接続部材の外周面に、弾性体のチューブとして構成された絶縁カバーを嵌め、前記絶縁カバーの弾性力によって、前記チューブの中心軸と直交する第一の方向から前記絶縁カバーを前記被接続部材に密着させる第一のステップと、前記被接続部材に間接活線作業用の工具を接続する第二のステップと、前記絶縁カバーを前記第一の方向と直交する第二の方向から圧縮して前記第一の方向の前記絶縁カバーの内径を拡げ、前記絶縁カバーと前記被接続部材および前記工具とを分離した状態で、前記絶縁カバーを前記被接続部材と前記工具との接続部に移動させる第三のステップと、前記絶縁カバーへの圧縮力を取り除き、前記絶縁カバーの弾性力によって前記第一の方向から前記絶縁カバーを前記工具または前記被接続部材に密着させて、前記接続部の周囲を前記絶縁カバーによって覆う第四のステップと、を有する。   In the insulating cover mounting method according to one aspect of the present invention, an insulating cover configured as an elastic tube is fitted to the outer peripheral surface of the connected member, and the tube is orthogonal to the central axis of the tube by the elastic force of the insulating cover. A first step of closely attaching the insulating cover to the connected member from a first direction, a second step of connecting a tool for indirect hot wire work to the connected member, and the insulating cover of the first direction. The insulating cover is compressed in a second direction orthogonal to one direction to expand the inner diameter of the insulating cover in the first direction, and the insulating cover, the connected member, and the tool are separated. A third step of moving to the connecting portion between the connected member and the tool, and removing the compressive force to the insulating cover, and the insulating cover from the first direction by the elastic force of the insulating cover. It said tool or said by close contact with the connecting member, having a fourth step of covering the periphery with the insulating cover of the connection part.

この方法によれば、接続部の周囲を絶縁カバーによって容易に覆うことができる。そのため、接続部に作業者が接触することによる感電事故が抑制される。作業者は絶縁カバーを弾性変形させることにより絶縁カバーを接続部に容易に着脱することができる。そのため、間接活線作業の作業効率が向上する。   According to this method, the periphery of the connection portion can be easily covered with the insulating cover. Therefore, the electric shock accident by an operator contacting a connection part is suppressed. The operator can easily attach and detach the insulating cover to the connecting portion by elastically deforming the insulating cover. Therefore, the work efficiency of indirect hot-line work improves.

また、絶縁カバーを被接続部材に取り付けてから工具を被接続部材に接続し、その後、絶縁カバーを接続部まで移動させるので、絶縁カバーに工具の先端部(工具本体)が挿入されない。そのため、工具本体の大きさに合わせて絶縁カバーを大きくする必要がない。また、工具本体の大きさに合わせて絶縁カバーの大きさを変える必要がないため、様々な工具に対して共通の絶縁カバーを用いることができる。   In addition, since the tool is connected to the connected member after the insulating cover is attached to the connected member, and then the insulating cover is moved to the connecting portion, the tip of the tool (tool body) is not inserted into the insulating cover. Therefore, it is not necessary to enlarge the insulating cover according to the size of the tool body. In addition, since it is not necessary to change the size of the insulating cover according to the size of the tool body, a common insulating cover can be used for various tools.

本発明の一態様に係る絶縁カバーは、間接活線作業用の工具と被接続部材との接続部の周囲を覆う絶縁カバーであって、弾性体のチューブとして構成され、弾性力によって、前記チューブの中心軸と直交する第一の方向から前記工具または前記被接続部材に密着するとともに、前記第一の方向と直交する第二の方向から圧縮され前記第一の方向の内径が拡げられることにより、前記工具および前記被接続部材から分離される。   An insulating cover according to an aspect of the present invention is an insulating cover that covers a periphery of a connection portion between a tool for indirect hot-wire work and a connected member, and is configured as an elastic tube, and the tube is formed by an elastic force. By closely contacting the tool or the member to be connected from a first direction orthogonal to the central axis, the inner diameter of the first direction is expanded by being compressed from a second direction orthogonal to the first direction. , Separated from the tool and the connected member.

この構成によれば、接続部の周囲を絶縁カバーによって容易に覆うことができる。そのため、接続部に作業者が接触することによる感電事故が抑制される。作業者は絶縁カバーを弾性変形させることにより絶縁カバーを接続部に容易に着脱することができる。そのため、間接活線作業の作業効率が向上する。   According to this configuration, the periphery of the connection portion can be easily covered with the insulating cover. Therefore, the electric shock accident by an operator contacting a connection part is suppressed. The operator can easily attach and detach the insulating cover to the connecting portion by elastically deforming the insulating cover. Therefore, the work efficiency of indirect hot-line work improves.

本発明によれば、工具と被接続部材との接続部を絶縁カバーで覆うことが可能な絶縁カバーの取り付け構造、絶縁カバーの取り付け方法および絶縁カバーを提供することができる。   ADVANTAGE OF THE INVENTION According to this invention, the attachment structure of the insulation cover which can cover the connection part of a tool and a to-be-connected member with an insulation cover, the attachment method of an insulation cover, and an insulation cover can be provided.

図1は、第一の実施形態に係る絶縁カバーの取り付け構造を示す図である。FIG. 1 is a view showing an insulating cover mounting structure according to the first embodiment. 図2は、絶縁カバーの概略図である。FIG. 2 is a schematic view of an insulating cover. 図3は、絶縁カバーが接続部に取り付けられた状態を示す図である。FIG. 3 is a diagram illustrating a state in which the insulating cover is attached to the connection portion. 図4は、絶縁カバーが接続部から分離された状態を示す図である。FIG. 4 is a diagram illustrating a state in which the insulating cover is separated from the connection portion. 図5は、絶縁カバーの取り付け方法を示す図である。FIG. 5 is a diagram illustrating a method of attaching the insulating cover. 図6は、絶縁カバーの取り付け方法を示す図である。FIG. 6 is a diagram illustrating a method of attaching the insulating cover. 図7は、第二の実施形態に係る絶縁カバーの取り付け構造を示す図である。FIG. 7 is a view showing an insulating cover mounting structure according to the second embodiment. 図8は、接続部の構成を示す図である。FIG. 8 is a diagram illustrating a configuration of the connection unit. 図9は、第三の実施形態に係る絶縁カバーの取り付け構造を示す図である。FIG. 9 is a view showing an insulating cover mounting structure according to the third embodiment. 図10は、絶縁カバーの構成を示す図である。FIG. 10 is a diagram illustrating a configuration of the insulating cover. 図11は、工具と被接続部材との接続方法を示す図である。FIG. 11 is a diagram illustrating a connection method between a tool and a member to be connected. 図12は、工具と被接続部材との接続部の構成を第二の方向から見た図である。FIG. 12 is a diagram of the configuration of the connection portion between the tool and the member to be connected as viewed from the second direction.

[第一の実施形態]
図1は、第一の実施形態に係る絶縁カバー30の取り付け構造100を示す図である。図2は、絶縁カバー30の概略図である。図3は、絶縁カバー30が工具10と被接続部材20との接続部Jに取り付けられた状態を示す図である。図4は、絶縁カバー30が接続部Jから分離された状態を示す図である。図5および図6は、絶縁カバー30の取り付け方法を示す図である。
[First embodiment]
FIG. 1 is a view showing a mounting structure 100 for an insulating cover 30 according to the first embodiment. FIG. 2 is a schematic view of the insulating cover 30. FIG. 3 is a diagram illustrating a state in which the insulating cover 30 is attached to the connection portion J between the tool 10 and the connected member 20. FIG. 4 is a view showing a state where the insulating cover 30 is separated from the connection portion J. FIG. 5 and 6 are diagrams showing a method of attaching the insulating cover 30. FIG.

図1に示すように、本実施形態の取り付け構造100は、間接活線作業用の工具10と被接続部材20との接続部Jに絶縁カバー30を取り付ける絶縁カバー30の取り付け構造である。取り付け構造100は、工具10と、被接続部材20と、絶縁カバー30と、を有する。被接続部材20には、複数の工具10が交換可能に接続される。絶縁カバー30は、工具10と被接続部材20との接続部Jの周囲を覆う。絶縁カバー30は、工具10の着脱に伴って着脱される。   As shown in FIG. 1, the attachment structure 100 of this embodiment is an attachment structure of the insulating cover 30 which attaches the insulating cover 30 to the connection part J of the tool 10 for indirect hot-wire work, and the to-be-connected member 20. As shown in FIG. The attachment structure 100 includes a tool 10, a connected member 20, and an insulating cover 30. A plurality of tools 10 are connected to the connected member 20 in a replaceable manner. The insulating cover 30 covers the periphery of the connection portion J between the tool 10 and the connected member 20. The insulating cover 30 is attached / detached as the tool 10 is attached / detached.

図5に示すように、被接続部材20は、例えば、先端部に各種工具を接続可能な絶縁操作棒である。被接続部材20は、例えば、棒状部21と、接続金具22と、を有する。接続金具22は、棒状部21の先端に設けられた本体部26と、本体部26の先端に連結された柱状部24と、本体部26の外周面に設けられたネジ溝(図示略)と螺合する雌ネジ部材23と、を有する。柱状部24の外周面には、外方に向けて突出した複数の突起25が設けられている。複数の突起25は、柱状部24の周方向に並べて設けられている。   As shown in FIG. 5, the connected member 20 is, for example, an insulating operation rod that can connect various tools to the tip portion. The connected member 20 includes, for example, a rod-shaped portion 21 and a connection fitting 22. The connection fitting 22 includes a main body portion 26 provided at the tip of the rod-like portion 21, a columnar portion 24 connected to the tip of the main body portion 26, and a screw groove (not shown) provided on the outer peripheral surface of the main body portion 26. A female screw member 23 to be screwed together. A plurality of protrusions 25 projecting outward are provided on the outer peripheral surface of the columnar portion 24. The plurality of protrusions 25 are provided side by side in the circumferential direction of the columnar portion 24.

棒状部21は、絶縁部材によって形成されている。棒状部21の中央部には、笠状の限界鍔29が設けられている。作業者は、感電事故を防止するために、限界鍔29よりも基端側(接続金具22側とは反対側)を持って間接活線作業を行う。限界鍔29と接続金具22との間には、笠状の水切り鍔28が設けられている。水切り鍔28は、降雨時の水切り用として用いられる。   The rod-shaped part 21 is formed of an insulating member. A cap-shaped limit rod 29 is provided at the center of the rod-shaped portion 21. In order to prevent an electric shock accident, the worker performs an indirect hot wire operation with a base end side (a side opposite to the connection fitting 22 side) from the limit rod 29. A cap-shaped draining rod 28 is provided between the limit rod 29 and the connection fitting 22. The draining rod 28 is used for draining water during rainfall.

工具10は、工具本体11と、接続金具12と、を有する。接続金具12は、被接続部材20の接続金具22と接続される。接続金具12は、柱状部24と嵌合可能な円筒形状を有する。接続金具12の外周面には、複数の突起25にそれぞれ対応した複数のスリット15が設けられている。スリット15は、接続金具12の周方向に延びる第一のスリット部13と、接続金具12の中心軸と平行な第二のスリット部14と、を有する。第一のスリット部13と第二のスリット部14とはT字状に交差している。第一のスリット部13の両端部には、棒状部21側に窪む窪みが形成されている。窪みは、突起25を収容可能な大きさを有する。   The tool 10 includes a tool body 11 and a connection fitting 12. The connection fitting 12 is connected to the connection fitting 22 of the connected member 20. The connection fitting 12 has a cylindrical shape that can be fitted to the columnar portion 24. A plurality of slits 15 corresponding to the plurality of protrusions 25 are provided on the outer peripheral surface of the connection fitting 12. The slit 15 includes a first slit portion 13 extending in the circumferential direction of the connection fitting 12 and a second slit portion 14 parallel to the central axis of the connection fitting 12. The first slit portion 13 and the second slit portion 14 intersect in a T shape. At both ends of the first slit portion 13, depressions that are recessed toward the rod-like portion 21 are formed. The depression has a size that can accommodate the protrusion 25.

接続金具12と接続金具22とにより、工具10と被接続部材20とをロックするロック機構が構成されている。   The connection fitting 12 and the connection fitting 22 constitute a lock mechanism that locks the tool 10 and the connected member 20.

例えば、柱状部24は、複数の突起25がそれぞれ第二のスリット部14にガイドされながら接続金具12に挿入される。複数の突起25がそれぞれ第一のスリット部13と第二のスリット部14との交差部に到達すると、接続金具12が周方向に回転され、複数の突起25がそれぞれ第一のスリット部13の一端部に到達する。複数の突起25がそれぞれ第一のスリット部13の一端部に到達すると、雌ネジ部材23が本体部26と螺合した状態で工具10側に押し上げられる。これにより、接続金具12が雌ネジ部材23によって押し上げられ、複数の突起25が、第一のスリット部13の一端部に設けられた窪みに押し付けられる。これにより、工具10と被接続部材20とがロックされる。   For example, the columnar portion 24 is inserted into the connection fitting 12 while the plurality of protrusions 25 are respectively guided by the second slit portion 14. When the plurality of projections 25 reach the intersections of the first slit portion 13 and the second slit portion 14, the connection fitting 12 is rotated in the circumferential direction, and the plurality of projections 25 are respectively formed on the first slit portion 13. Reach one end. When the plurality of protrusions 25 reach one end of the first slit portion 13, the female screw member 23 is pushed up to the tool 10 side in a state of being screwed with the main body portion 26. As a result, the connection fitting 12 is pushed up by the female screw member 23, and the plurality of protrusions 25 are pressed against a recess provided at one end of the first slit portion 13. Thereby, the tool 10 and the to-be-connected member 20 are locked.

図2に示すように、絶縁カバー30は、弾性体のチューブとして構成されている。絶縁カバー30は、絶縁部材によって形成されている。絶縁カバー30の少なくとも一部には、断面形状が細長くなっている部分が存在する。断面形状が細長くなっている部分の短軸方向を第一の方向D1とし、長軸方向を第二の方向D2とする。   As shown in FIG. 2, the insulating cover 30 is configured as an elastic tube. The insulating cover 30 is formed of an insulating member. At least a part of the insulating cover 30 has a portion with an elongated cross-sectional shape. The minor axis direction of the portion where the cross-sectional shape is elongated is defined as a first direction D1, and the major axis direction is defined as a second direction D2.

図3に示すように、絶縁カバー30は、弾性力によって、チューブの中心軸AXと直交する第一の方向D1から工具10または被接続部材20に密着する。これにより、絶縁カバー30が、接続金具12および接続金具22を含む接続部Jの周囲に固定される。絶縁カバー30は、第二の方向D2からは工具10および被接続部材20のいずれとも密着しない。そのため、第二の方向D2においては、絶縁カバー30と、工具10および被接続部材20と、の間に隙間SPが形成される。   As shown in FIG. 3, the insulating cover 30 is brought into close contact with the tool 10 or the connected member 20 from the first direction D <b> 1 orthogonal to the central axis AX of the tube by elastic force. Thereby, the insulating cover 30 is fixed around the connection portion J including the connection fitting 12 and the connection fitting 22. The insulating cover 30 does not come into close contact with either the tool 10 or the connected member 20 from the second direction D2. Therefore, in the second direction D2, a gap SP is formed between the insulating cover 30, the tool 10, and the connected member 20.

図4に示すように、絶縁カバー30は、第一の方向D1と直交する第二の方向D2から圧縮され第一の方向D1の内径が拡げられることにより、工具10および被接続部材20から分離される。絶縁カバー30は、第一の方向D1と第二の方向D2の双方において、工具10および被接続部材20のいずれとも密着しない。そのため、絶縁カバー30と、工具10および被接続部材20と、の間には、絶縁カバー30の内周全体にわたって隙間SPが形成される。   As shown in FIG. 4, the insulating cover 30 is separated from the tool 10 and the connected member 20 by being compressed from the second direction D2 orthogonal to the first direction D1 and the inner diameter of the first direction D1 being expanded. Is done. The insulating cover 30 does not adhere to any of the tool 10 and the connected member 20 in both the first direction D1 and the second direction D2. Therefore, a gap SP is formed between the insulating cover 30, the tool 10, and the connected member 20 over the entire inner periphery of the insulating cover 30.

絶縁カバー30の圧縮は、作業者が絶縁カバー30の外周面を掴んで第二の方向D2に握力Fを加えることにより行われる。絶縁カバー30は、例えば、作業者が片手Uで握って第二の方向D2から圧縮できる大きさである。そのため、接続部Jへの絶縁カバー30の着脱を片手Uで容易に行うことができる。よって、間接活線作業の作業効率が向上する。   The compression of the insulating cover 30 is performed by the operator holding the outer peripheral surface of the insulating cover 30 and applying a gripping force F in the second direction D2. The insulating cover 30 is, for example, a size that allows an operator to hold it with one hand U and compress it from the second direction D2. For this reason, the insulating cover 30 can be easily attached to and detached from the connection portion J with one hand U. Therefore, the work efficiency of the indirect hot line work is improved.

本実施形態では、例えば、絶縁カバー30は、断面形状が高さ方向(中心軸AXと平行な方向)の位置によって変化しない楕円筒形状を有する。図2中の符号R1およびR2は、絶縁カバー30が第一の方向D1から圧縮されない状態における絶縁カバー30の第一の方向D1の内径および第二の方向D2の内径をそれぞれ示す。図2中の符号Hは、絶縁カバー30が第一の方向D1から圧縮されない状態における絶縁カバー30の高さを示す。図2中の符号THは、絶縁カバー30の厚みを示す。   In the present embodiment, for example, the insulating cover 30 has an elliptic cylinder shape whose cross-sectional shape does not change depending on the position in the height direction (direction parallel to the central axis AX). Reference numerals R1 and R2 in FIG. 2 indicate the inner diameter in the first direction D1 and the inner diameter in the second direction D2 of the insulating cover 30 in a state where the insulating cover 30 is not compressed from the first direction D1, respectively. The symbol H in FIG. 2 indicates the height of the insulating cover 30 in a state where the insulating cover 30 is not compressed from the first direction D1. Reference sign TH in FIG. 2 indicates the thickness of the insulating cover 30.

絶縁カバー30の高さHは、例えば、接続部Jを跨いで工具10の基端部(接触金具12の少なくとも一部)から被接続部材20の先端部(棒状部21の先端部)までを覆うことができる長さである。絶縁カバー30が接続部Jに取り付けられた際に絶縁カバー30の内周面と対向する部分の工具10および被接続部材20の第一の方向D1の外径のうち最も大きい外径をO1とすると、絶縁カバー30の第一の方向D1の内径R1は外径O1よりも小さい。絶縁カバー30が接続部Jに取り付けられた際に絶縁カバー30の内周面と対向する部分の工具10および被接続部材20の第二の方向D2の外径のうち最も小さい外径をO2とすると、絶縁カバー30の第二の方向D2の内径R2は外径O2よりも大きい。   The height H of the insulating cover 30 is, for example, from the base end portion (at least a part of the contact fitting 12) of the tool 10 to the distal end portion (the distal end portion of the rod-shaped portion 21) of the connected member 20 across the connecting portion J. It is the length that can be covered. When the insulating cover 30 is attached to the connection portion J, the largest outer diameter among the outer diameters of the tool 10 and the connected member 20 in the first direction D1 of the portion facing the inner peripheral surface of the insulating cover 30 is O1. Then, the inner diameter R1 of the insulating cover 30 in the first direction D1 is smaller than the outer diameter O1. When the insulating cover 30 is attached to the connection portion J, the smallest outer diameter of the outer diameter in the second direction D2 of the tool 10 and the connected member 20 at the portion facing the inner peripheral surface of the insulating cover 30 is O2. Then, the inner diameter R2 of the insulating cover 30 in the second direction D2 is larger than the outer diameter O2.

絶縁カバー30の内径R1,R2、高さH、厚みTHおよび材質は、絶縁カバー30を片手Uで扱うときの扱いやすさ、絶縁カバー30を圧縮して変形させるときの変形のしやすさ、圧縮を解除して工具10または被接続部材20に絶縁カバー30を密着させるときの復元力の強さ、および、作業者の安全性を図るための絶縁性などを考慮して設計される。   The inner diameter R1, R2, height H, thickness TH and material of the insulating cover 30 are easy to handle when the insulating cover 30 is handled with one hand U, and easy to deform when the insulating cover 30 is compressed and deformed. It is designed in consideration of the strength of the restoring force when releasing the compression and bringing the insulating cover 30 into close contact with the tool 10 or the member 20 to be connected and the insulating property for the safety of the operator.

上述した絶縁カバー30は、次の方法により接続部Jに取り付けられる。   The insulating cover 30 described above is attached to the connection portion J by the following method.

まず、図5に示すように、被接続部材20の外周面に、弾性体のチューブとして構成された絶縁カバー30を嵌め、絶縁カバー30の弾性力によって、チューブの中心軸AXと直交する第一の方向D1から絶縁カバー30を被接続部材20に密着させる(第一のステップ)。   First, as shown in FIG. 5, the insulating cover 30 configured as an elastic tube is fitted to the outer peripheral surface of the connected member 20, and the first perpendicular to the central axis AX of the tube is obtained by the elastic force of the insulating cover 30. The insulating cover 30 is brought into close contact with the connected member 20 from the direction D1 (first step).

ここではまず、作業者が絶縁カバー30の外周面を片手Uで掴んで絶縁カバー30を第二の方向D2から圧縮し、第一の方向D1の絶縁カバー30の内径を拡げる。そして、絶縁カバー30と被接続部材20とを分離した状態で、被接続部材20の先端側から絶縁カバー30を嵌め、接続金具22と干渉しない位置(例えば、接続金具22と水切り鍔28との間の位置)まで絶縁カバー30を移動させる。そして、絶縁カバー30への圧縮力を取り除き、絶縁カバー30の弾性力によって第一の方向D1から絶縁カバー30を被接続部材20に密着させる。   Here, first, an operator grasps the outer peripheral surface of the insulating cover 30 with one hand U, compresses the insulating cover 30 from the second direction D2, and expands the inner diameter of the insulating cover 30 in the first direction D1. Then, in a state where the insulating cover 30 and the connected member 20 are separated, the insulating cover 30 is fitted from the distal end side of the connected member 20, and the position where the insulating cover 30 does not interfere with the connecting fitting 22 (for example, between the connecting fitting 22 and the draining rod 28). The insulating cover 30 is moved to a position between the two. Then, the compressive force on the insulating cover 30 is removed, and the insulating cover 30 is brought into close contact with the connected member 20 from the first direction D1 by the elastic force of the insulating cover 30.

被接続部材20への絶縁カバー30の取り付けが完了したら、被接続部材20に間接活線作業用の工具10を接続する(第二のステップ)。   When the attachment of the insulating cover 30 to the connected member 20 is completed, the tool 10 for indirect hot wire work is connected to the connected member 20 (second step).

被接続部材20と工具10との接続が完了したら、図6に示すように、絶縁カバー30を第一の方向D1と直交する第二の方向D2から圧縮して第一の方向D1の絶縁カバー30の内径を拡げ、絶縁カバー30と被接続部材20および工具10とを分離した状態で、絶縁カバー30を被接続部材20と工具10との接続部Jに移動させる(第三のステップ)。   When the connection between the member to be connected 20 and the tool 10 is completed, as shown in FIG. 6, the insulating cover 30 is compressed from the second direction D2 orthogonal to the first direction D1 to insulate the first direction D1. The inner cover 30 is expanded and the insulating cover 30 is moved to the connecting portion J between the connected member 20 and the tool 10 in a state where the insulating cover 30 and the connected member 20 and the tool 10 are separated (third step).

絶縁カバー30が、接続部Jを跨いで工具10の基端部と被接続部材20の先端部(棒状部21の先端部)までを覆う位置まで移動したら、絶縁カバー30への圧縮力を取り除き、絶縁カバー30の弾性力によって第一の方向D1から絶縁カバー30を工具10または被接続部材20に密着させて、接続部Jの周囲を絶縁カバー30によって覆う(第四のステップ)。   When the insulating cover 30 moves across the connecting portion J to a position covering the proximal end portion of the tool 10 and the distal end portion of the connected member 20 (the distal end portion of the rod-shaped portion 21), the compressive force on the insulating cover 30 is removed. The insulating cover 30 is brought into close contact with the tool 10 or the connected member 20 from the first direction D1 by the elastic force of the insulating cover 30, and the periphery of the connecting portion J is covered with the insulating cover 30 (fourth step).

上述した本実施形態の絶縁カバー30の取り付け構造および取り付け方法によれば、接続部Jの周囲を絶縁カバー30によって容易に覆うことができる。そのため、接続部Jに作業者が接触することによる感電事故が抑制される。作業者は絶縁カバー30を弾性変形させることにより絶縁カバー30を接続部Jに容易に着脱することができる。そのため、間接活線作業の作業効率が向上する。   According to the mounting structure and mounting method of the insulating cover 30 of this embodiment described above, the periphery of the connection portion J can be easily covered with the insulating cover 30. Therefore, the electric shock accident by an operator contacting the connection part J is suppressed. An operator can easily attach / detach the insulating cover 30 to / from the connecting portion J by elastically deforming the insulating cover 30. Therefore, the work efficiency of indirect hot-line work improves.

また、絶縁カバー30を被接続部材20に取り付けてから工具10を被接続部材20に接続し、その後、絶縁カバー30を接続部Jまで移動させるので、絶縁カバー30に工具10の先端部(工具本体11)が挿入されない。そのため、工具本体11の大きさに合わせて絶縁カバー30を大きくする必要がない。また、工具本体11の大きさに合わせて絶縁カバー30の大きさを変える必要がないため、様々な工具10に対して共通の絶縁カバー30を用いることができる。   In addition, since the insulating cover 30 is attached to the connected member 20, the tool 10 is connected to the connected member 20, and then the insulating cover 30 is moved to the connecting portion J. The body 11) is not inserted. Therefore, it is not necessary to enlarge the insulating cover 30 according to the size of the tool body 11. In addition, since it is not necessary to change the size of the insulating cover 30 in accordance with the size of the tool body 11, the common insulating cover 30 can be used for various tools 10.

[第二の実施形態]
図7は、第二の実施形態に係る絶縁カバー30の取り付け構造200を示す図である。図8は、接続部Jの構成を示す図である。本実施形態において、第一の実施形態と共通する構成要素については、同じ符号を付し、詳細な説明は省略する。
[Second Embodiment]
FIG. 7 is a view showing a mounting structure 200 of the insulating cover 30 according to the second embodiment. FIG. 8 is a diagram illustrating a configuration of the connection portion J. In the present embodiment, the same components as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

本実施形態において第一の実施形態と異なる点は、工具50と被接続部材20とが、金属製のアダプター40を介して接続されている点である。   This embodiment is different from the first embodiment in that the tool 50 and the connected member 20 are connected via a metal adapter 40.

図7に示すように、アダプター40は、例えば、円盤状のヘッド部41と、ヘッド部41の基端側に接続された接続金具42と、を有する。工具50は、例えば、ヘッド部41に取り付け可能な円盤状の取付け部52と、取付け部52の先端側に接続された工具本体51と、を有する。   As shown in FIG. 7, the adapter 40 includes, for example, a disk-shaped head portion 41 and a connection fitting 42 connected to the base end side of the head portion 41. The tool 50 includes, for example, a disc-shaped attachment portion 52 that can be attached to the head portion 41, and a tool body 51 connected to the distal end side of the attachment portion 52.

図8に示すように、ヘッド部41の中央部には、蝶ボルト43が螺合するネジ穴44が設けられている。ヘッド部41の一面には、ネジ穴44を中心として放射状に延びる複数の突起45が設けられている。取付け部52には、蝶ボルト43が通過可能な連結溝53(図7参照)が設けられている。連結溝53は、取付け部52の中央部から外周部に至る直線状の溝として構成されている。ヘッド部41と対向する取付け部52の一面には、連結溝53の終端部を中心として放射状に延びる複数の突起54が設けられている。   As shown in FIG. 8, a screw hole 44 into which the butterfly bolt 43 is screwed is provided in the center portion of the head portion 41. On one surface of the head portion 41, a plurality of protrusions 45 extending radially about the screw hole 44 are provided. The attachment portion 52 is provided with a connection groove 53 (see FIG. 7) through which the butterfly bolt 43 can pass. The connecting groove 53 is configured as a linear groove extending from the center portion of the mounting portion 52 to the outer peripheral portion. On one surface of the mounting portion 52 facing the head portion 41, a plurality of protrusions 54 extending radially from the end portion of the connection groove 53 are provided.

突起45と突起54とが噛み合う位置を調整することで、ヘッド部41に対する取付け部52の取り付け角度が調整される。取付け部52は、ヘッド部41に対する取り付け角度が調整された状態で蝶ボルト43によってヘッド部41に固定される。工具50は、アダプター40に設けられた接続金具42を介して被接続部材20と接続される。接続金具42の構成は、図5に示した接続金具12と同じである。   By adjusting the position where the protrusion 45 and the protrusion 54 mesh with each other, the attachment angle of the attachment portion 52 with respect to the head portion 41 is adjusted. The attachment portion 52 is fixed to the head portion 41 by the butterfly bolt 43 in a state where the attachment angle with respect to the head portion 41 is adjusted. The tool 50 is connected to the connected member 20 via a connection fitting 42 provided on the adapter 40. The configuration of the connection fitting 42 is the same as that of the connection fitting 12 shown in FIG.

絶縁カバー30は、取付け部52、アダプター40および接続金具22(図5参照)を含む接続部Jの周囲を覆う。絶縁カバー30は、例えば、接続部Jを跨いで工具50の基端部から被接続部材20の先端部(棒状部21の先端部)までを覆う位置に設けられている。絶縁カバー30の長軸方向となる第二の方向D2は、例えば、ネジ穴44への蝶ボルト43の挿入方向と一致する。これにより、絶縁カバー30と蝶ボルト43との間に隙間SPが形成されやすくなり、絶縁カバー30と蝶ボルト43とが干渉することが抑制される。   The insulating cover 30 covers the periphery of the connection portion J including the attachment portion 52, the adapter 40, and the connection fitting 22 (see FIG. 5). The insulating cover 30 is provided, for example, at a position that covers the connecting portion J and covers from the proximal end portion of the tool 50 to the distal end portion of the connected member 20 (the distal end portion of the rod-shaped portion 21). The second direction D <b> 2 that is the major axis direction of the insulating cover 30 coincides with the insertion direction of the butterfly bolt 43 into the screw hole 44, for example. Accordingly, the gap SP is easily formed between the insulating cover 30 and the butterfly bolt 43, and interference between the insulating cover 30 and the butterfly bolt 43 is suppressed.

本実施形態においても、接続部Jの周囲を絶縁カバー30によって容易に覆うことができる。そのため、接続部Jに作業者が接触することによる感電事故が抑制される。   Also in this embodiment, the periphery of the connection portion J can be easily covered with the insulating cover 30. Therefore, the electric shock accident by an operator contacting the connection part J is suppressed.

[第三の実施形態]
図9は、第三の実施形態に係る絶縁カバー80の取り付け構造300を示す図である。図10は、絶縁カバー80の構成を示す図である。図10の左上の図は、絶縁カバー80の中心軸AXを通って第一の方向D1と平行な絶縁カバー80の断面図であり、図10の左下の図は、絶縁カバー80の中心軸AXを通って第二の方向D2と平行な絶縁カバー80の断面図であり、図10の右上の図は、絶縁カバー80の一端部を中心軸AXと平行な方向から見た図である。図11は、工具60と被接続部材70との接続方法を示す図である。図12は、工具60と被接続部材70との接続部Jの構成を第二の方向D2から見た図である。本実施形態において、第一の実施形態と共通する構成については、同じ符号を付し、詳細な説明は省略する。
[Third embodiment]
FIG. 9 is a view showing a mounting structure 300 of the insulating cover 80 according to the third embodiment. FIG. 10 is a diagram illustrating a configuration of the insulating cover 80. 10 is a cross-sectional view of the insulating cover 80 passing through the central axis AX of the insulating cover 80 and parallel to the first direction D1, and the lower left drawing of FIG. 10 is the central axis AX of the insulating cover 80. FIG. 10 is a cross-sectional view of the insulating cover 80 passing through and parallel to the second direction D2, and the upper right view of FIG. 10 is a view of one end portion of the insulating cover 80 viewed from a direction parallel to the central axis AX. FIG. 11 is a diagram illustrating a method for connecting the tool 60 and the connected member 70. FIG. 12 is a view of the configuration of the connection portion J between the tool 60 and the connected member 70 as viewed from the second direction D2. In the present embodiment, components that are the same as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

図9に示すように、本実施形態の工具60は油圧式の工具である。工具60は、作動油を供給可能な被接続部材70に接続されている。工具60は、例えば、工具本体61と、ソケット62と、を有する。被接続部材70は、例えば、油圧ホース71と、プラグ72と、有する。工具本体61は、例えば、油圧ヘッド部OHと、油圧シリンダー部OSと、を有する。油圧ヘッド部OHは、固定ダイス63と、可動ダイス64と、を有する。油圧シリンダー部OSは、油圧ホース71から供給された作動油によって可動ダイス64を固定ダイス63側に変位させる。これにより、固定ダイス63と可動ダイス64とに挟まれた被把持物に圧縮力が加えられる。絶縁カバー80は、ソケット62およびプラグ72を含む接続部Jの周囲を覆う。   As shown in FIG. 9, the tool 60 of the present embodiment is a hydraulic tool. The tool 60 is connected to a connected member 70 capable of supplying hydraulic oil. The tool 60 includes, for example, a tool body 61 and a socket 62. The connected member 70 includes, for example, a hydraulic hose 71 and a plug 72. The tool body 61 includes, for example, a hydraulic head part OH and a hydraulic cylinder part OS. The hydraulic head unit OH includes a fixed die 63 and a movable die 64. The hydraulic cylinder part OS displaces the movable die 64 to the fixed die 63 side by the hydraulic oil supplied from the hydraulic hose 71. Thereby, a compressive force is applied to the object to be grasped sandwiched between the fixed die 63 and the movable die 64. The insulating cover 80 covers the periphery of the connection portion J including the socket 62 and the plug 72.

図10に示すように、絶縁カバー80は、弾性体のチューブとして構成されている。チューブの中心軸AXに沿った絶縁カバー80の両端部80Eには、断面形状が細長くなっている部分が存在する。断面形状が細長くなっている部分の短軸方向を第一の方向D1とし、長軸方向を第二の方向D2とする。絶縁カバー80が第二の方向D2から圧縮されない状態で、チューブの中心軸AXと平行な方向における絶縁カバー80の中央部80Cは絶縁カバー80の両端部80Eよりも第一の方向D1に大きく膨らんでいる。   As shown in FIG. 10, the insulating cover 80 is configured as an elastic tube. At both end portions 80E of the insulating cover 80 along the center axis AX of the tube, there are portions where the cross-sectional shape is elongated. The minor axis direction of the portion where the cross-sectional shape is elongated is defined as a first direction D1, and the major axis direction is defined as a second direction D2. In a state where the insulating cover 80 is not compressed from the second direction D2, the central portion 80C of the insulating cover 80 in the direction parallel to the central axis AX of the tube swells larger in the first direction D1 than both end portions 80E of the insulating cover 80. It is out.

図10において、符号R1Cは、第一の方向D1における絶縁カバー80の中央部80Cの内径を示す。符号R1Eは、第一の方向D1における絶縁カバー80の両端部80Eの内径を示す。符号R2Cは、第二の方向D2における絶縁カバー80の中央部80Cの内径を示す。符号R2Eは、第二の方向D2における絶縁カバー80の両端部80Eの内径を示す。   In FIG. 10, the symbol R1C indicates the inner diameter of the central portion 80C of the insulating cover 80 in the first direction D1. Symbol R1E indicates the inner diameter of both end portions 80E of the insulating cover 80 in the first direction D1. Reference symbol R2C indicates the inner diameter of the central portion 80C of the insulating cover 80 in the second direction D2. Symbol R2E indicates the inner diameter of both end portions 80E of the insulating cover 80 in the second direction D2.

本実施形態では、例えば、絶縁カバー80は、断面形状が高さ方向(中心軸AXと平行な方向)の位置によって変化する楕円筒形状を有する。内径R1Cは、内径R1Eよりも大きい。内径R2Cは、内径R2Eよりも小さい。第一の方向D1の内径と第二の方向D2の内径との比(第一の方向D1の内径/第二の方向D2の内径)を楕円率とすると、絶縁カバー80の中央部80Cの楕円率は、絶縁カバー80の両端部80Eの楕円率よりも大きい。絶縁カバー80の中央部80Cの楕円率は、例えば1である。   In the present embodiment, for example, the insulating cover 80 has an elliptic cylinder shape whose cross-sectional shape changes depending on the position in the height direction (direction parallel to the central axis AX). The inner diameter R1C is larger than the inner diameter R1E. The inner diameter R2C is smaller than the inner diameter R2E. If the ratio of the inner diameter in the first direction D1 to the inner diameter in the second direction D2 (the inner diameter in the first direction D1 / the inner diameter in the second direction D2) is the ellipticity, the elliptical shape of the central portion 80C of the insulating cover 80 The rate is greater than the ellipticity of both end portions 80E of the insulating cover 80. The ellipticity of the central portion 80C of the insulating cover 80 is, for example, 1.

絶縁カバー80の内径RC1,RE1,RC2,RE2、高さH、厚みTHおよび材質は、絶縁カバー80を片手で扱うときの扱いやすさ、絶縁カバー80を圧縮して変形させるときの変形のしやすさ、圧縮を解除して工具60または被接続部材70に絶縁カバー80を密着させるときの復元力の強さ、および、作業者の安全性を図るための絶縁性などを考慮して設計される。   The inner diameter RC1, RE1, RC2, RE2, the height H, the thickness TH and the material of the insulating cover 80 are easy to handle when the insulating cover 80 is handled with one hand, and are deformed when the insulating cover 80 is compressed and deformed. Designed in consideration of easiness, strength of restoring force when the insulating cover 80 is brought into close contact with the tool 60 or the connected member 70 after being released from compression, and insulation for the safety of workers. The

図11および図12に示すように、ソケット62は、例えば、プラグ72を挿入可能な筒状のソケット本体65を有する。ソケット本体65の外周面には、スプリング68を介して筒状のスリーブ66がソケット本体65の軸方向にスライド可能に取り付けられている。ソケット本体65には、スリーブ66側からプラグ72側に貫通する貫通孔65Hが設けられている。貫通孔65Hには、スチールボール67が嵌め込まれている。   As shown in FIGS. 11 and 12, the socket 62 includes a cylindrical socket body 65 into which a plug 72 can be inserted, for example. A cylindrical sleeve 66 is attached to the outer peripheral surface of the socket body 65 via a spring 68 so as to be slidable in the axial direction of the socket body 65. The socket body 65 is provided with a through hole 65H that penetrates from the sleeve 66 side to the plug 72 side. A steel ball 67 is fitted in the through hole 65H.

スリーブ66がプラグ72側に配置させた状態(スプリング68が圧縮されない状態)では、スチールボール67は、スリーブ66よってプラグ72側に押されている。貫通孔65Hからプラグ72側に突出したスチールボール67の底部は、プラグ72の外周面に設けられた溝73に押し付けられる。これにより、ソケット62とプラグ72とがロックされる。   In a state where the sleeve 66 is disposed on the plug 72 side (a state where the spring 68 is not compressed), the steel ball 67 is pushed toward the plug 72 by the sleeve 66. The bottom portion of the steel ball 67 protruding toward the plug 72 from the through hole 65H is pressed against the groove 73 provided on the outer peripheral surface of the plug 72. Thereby, the socket 62 and the plug 72 are locked.

スリーブ66が工具本体61側にスライドさせると、スリーブ66の内周面に設けられた溝69がスチールボール67の上部に移動する。溝69は、スチールボール67を収容可能な深さを有しており、スチールボール67はプラグ72の溝73から抜け出してスリーブ66の溝69側に突出可能となる。これにより、ソケット62とプラグ72とのロックが解除され、ソケット62からプラグ72が取り外し可能となる。   When the sleeve 66 is slid toward the tool body 61, the groove 69 provided on the inner peripheral surface of the sleeve 66 moves to the upper part of the steel ball 67. The groove 69 has a depth that can accommodate the steel ball 67, and the steel ball 67 can come out of the groove 73 of the plug 72 and protrude toward the groove 69 of the sleeve 66. As a result, the lock between the socket 62 and the plug 72 is released, and the plug 72 can be removed from the socket 62.

絶縁カバー80は、ソケット62およびプラグ72を含む接続部Jの周囲を覆う。絶縁カバー80は、例えば、接続部Jを跨いで工具60の基端部から被接続部材70の先端部(油圧ホース71の先端部)までを覆う位置に設けられている。   The insulating cover 80 covers the periphery of the connection portion J including the socket 62 and the plug 72. The insulating cover 80 is provided, for example, at a position covering the connecting portion J and covering from the base end portion of the tool 60 to the distal end portion of the connected member 70 (the distal end portion of the hydraulic hose 71).

絶縁カバー80の中央部80Cは、接続部Jの周囲を覆う。絶縁カバー80の中央部80Cは、工具60および被接続部材70のいずれとも密着しない。絶縁カバー80の中央部80Cと、工具60および被接続部材70と、の間には、絶縁カバー80の内周全体にわたって隙間SPが形成されている。絶縁カバー80が第二の方向D2から圧縮されない状態で、チューブの中心軸AXと平行な方向における絶縁カバー80の中央部80Cは接続部Jと接触していない。   The central portion 80C of the insulating cover 80 covers the periphery of the connection portion J. The central portion 80 </ b> C of the insulating cover 80 is not in close contact with either the tool 60 or the connected member 70. A gap SP is formed across the entire inner periphery of the insulating cover 80 between the central portion 80C of the insulating cover 80, the tool 60, and the connected member 70. In a state where the insulating cover 80 is not compressed from the second direction D2, the central portion 80C of the insulating cover 80 in the direction parallel to the central axis AX of the tube is not in contact with the connecting portion J.

絶縁カバー80の第一の端部80E1は、工具本体61の基端部の周囲を覆う。絶縁カバー80の第一の端部80E1は、第一の方向D1から工具60に密着する。絶縁カバー80の第二の端部80E2は、油圧ホース71の先端部の周囲を覆う。絶縁カバー80の第二の端部80E2は、第一の方向D1から被接続部材70に密着する。これにより、絶縁カバー80が、接続部Jの周囲に固定される。   The first end 80E1 of the insulating cover 80 covers the periphery of the base end of the tool body 61. The first end 80E1 of the insulating cover 80 is in close contact with the tool 60 from the first direction D1. The second end 80E2 of the insulating cover 80 covers the periphery of the tip of the hydraulic hose 71. The second end 80E2 of the insulating cover 80 is in close contact with the connected member 70 from the first direction D1. Accordingly, the insulating cover 80 is fixed around the connection portion J.

図示は省略したが、絶縁カバー80の第一の端部80E1は、第二の方向D2からは工具60に密着しない。そのため、第二の方向D2においては、絶縁カバー80の第一の端部80E1と工具60との間に隙間SPが形成される。また、絶縁カバー80の第二の端部80E2は、第二の方向D2からは被接続部材70に密着しない。そのため、第二の方向D2においては、絶縁カバー80の第二の端部80E2と被接続部材70との間に隙間SPが形成される。そのため、絶縁カバー80を第二の方向D2から圧縮し、第一の方向D1の絶縁カバー80の内径を拡げることで、接続部Jへの絶縁カバー80の着脱を容易に行うことができる。   Although not shown, the first end 80E1 of the insulating cover 80 does not come into close contact with the tool 60 from the second direction D2. Therefore, a gap SP is formed between the first end 80E1 of the insulating cover 80 and the tool 60 in the second direction D2. Further, the second end 80E2 of the insulating cover 80 does not come into close contact with the connected member 70 from the second direction D2. Therefore, a gap SP is formed between the second end 80E2 of the insulating cover 80 and the connected member 70 in the second direction D2. Therefore, the insulating cover 80 can be easily attached to and detached from the connecting portion J by compressing the insulating cover 80 from the second direction D2 and expanding the inner diameter of the insulating cover 80 in the first direction D1.

本実施形態においても、接続部Jの周囲を絶縁カバー80によって容易に覆うことができる。そのため、接続部Jに作業者が接触することによる感電事故が抑制される。   Also in the present embodiment, the periphery of the connection portion J can be easily covered with the insulating cover 80. Therefore, the electric shock accident by an operator contacting the connection part J is suppressed.

また、本実施形態では、絶縁カバー80が第二の方向D2から圧縮されない状態で、絶縁カバー80の中央部80Cは絶縁カバー80の両端部80Eよりも第一の方向D1に大きく膨らんでいる。そのため、絶縁カバー80と接続部Jとが強く密着することを抑制することができる。絶縁カバー80と接続部Jとが強く密着していると、間接活線作業中の工具60の動きによって接続部Jに力が加わり、工具60が被接続部材70から外れてしまう可能性がある。絶縁カバー80と接続部Jとの密着が弱ければ、絶縁カバー80を介して接続部Jに力が加わることが抑制される。   In the present embodiment, the central portion 80C of the insulating cover 80 swells in the first direction D1 larger than both end portions 80E of the insulating cover 80 in a state where the insulating cover 80 is not compressed from the second direction D2. Therefore, it can suppress that the insulating cover 80 and the connection part J adhere | attach strongly. If the insulating cover 80 and the connection portion J are in close contact with each other, a force is applied to the connection portion J due to the movement of the tool 60 during the indirect hot wire operation, and the tool 60 may be detached from the connected member 70. . If the close contact between the insulating cover 80 and the connection portion J is weak, the force applied to the connection portion J through the insulating cover 80 is suppressed.

以上、本発明の実施形態を説明したが、前述した内容により本発明が限定されるものではない。また、前述した構成要素には、当業者が容易に想定できるもの、実質的に同一のもの、いわゆる均等の範囲のものが含まれる。さらに、前述した構成要素は適宜組み合わせることが可能である。さらに、本発明の趣旨を逸脱しない範囲で構成要素の種々の省略、置換及び変更のうち少なくとも1つを行うことができる。   As mentioned above, although embodiment of this invention was described, this invention is not limited by the content mentioned above. In addition, the above-described constituent elements include those that can be easily assumed by those skilled in the art, those that are substantially the same, and those in a so-called equivalent range. Furthermore, the above-described components can be appropriately combined. Furthermore, at least one of various omissions, substitutions, and changes of the components can be made without departing from the spirit of the present invention.

10,50,60 工具
20,70 被接続部材
30,80 絶縁カバー
80C 絶縁カバーの中央部
80E 絶縁カバーの端部
AX 中心軸
D1 第一の方向
D2 第二の方向
J 接続部
R1,R1C,R1E 第一の方向の内径
R2,R2C,R2E 第二の方向の内径
U 手
10, 50, 60 Tool 20, 70 Connected member 30, 80 Insulating cover 80C Insulating cover central part 80E Insulating cover end AX Central axis D1 First direction D2 Second direction J Connection parts R1, R1C, R1E Inner diameter R2, R2C, R2E in the first direction Inner diameter U in the second direction

Claims (6)

間接活線作業用の工具と、
前記工具と接続された被接続部材と、
前記工具と前記被接続部材との接続部の周囲を覆う絶縁カバーと、
を有し、
前記絶縁カバーは、弾性体のチューブとして構成され、
前記絶縁カバーは、弾性力によって、前記チューブの中心軸と直交する第一の方向から前記工具または前記被接続部材に密着するとともに、前記第一の方向と直交する第二の方向から圧縮され前記第一の方向の内径が拡げられることにより、前記工具および前記被接続部材から分離される
絶縁カバーの取り付け構造。
Tools for indirect hot-line work,
A connected member connected to the tool;
An insulating cover that covers the periphery of the connecting portion between the tool and the connected member;
Have
The insulating cover is configured as an elastic tube,
The insulating cover is in close contact with the tool or the connected member from a first direction orthogonal to the central axis of the tube by an elastic force, and is compressed from a second direction orthogonal to the first direction. An insulating cover mounting structure that is separated from the tool and the connected member by expanding an inner diameter in a first direction.
前記絶縁カバーが前記第二の方向から圧縮されない状態で、前記チューブの中心軸と平行な方向における前記絶縁カバーの中央部は前記絶縁カバーの両端部よりも前記第一の方向に大きく膨らんでいる
請求項1に記載の絶縁カバーの取り付け構造。
In a state where the insulating cover is not compressed from the second direction, a central portion of the insulating cover in a direction parallel to the central axis of the tube is swollen larger in the first direction than both end portions of the insulating cover. The insulating cover mounting structure according to claim 1.
前記絶縁カバーが前記第二の方向から圧縮されない状態で、前記チューブの中心軸と平行な方向における前記絶縁カバーの中央部は前記接続部と接触していない
請求項2に記載の絶縁カバーの取り付け構造。
3. The insulating cover according to claim 2, wherein a central portion of the insulating cover in a direction parallel to a central axis of the tube is not in contact with the connecting portion in a state where the insulating cover is not compressed from the second direction. Construction.
前記絶縁カバーは、作業者が片手で握って前記第二の方向から圧縮できる大きさである
請求項1ないし3のいずれか1項に記載の絶縁カバーの取り付け構造。
The mounting structure of the insulating cover according to any one of claims 1 to 3, wherein the insulating cover has a size that allows an operator to hold it with one hand and compress it from the second direction.
被接続部材の外周面に、弾性体のチューブとして構成された絶縁カバーを嵌め、前記絶縁カバーの弾性力によって、前記チューブの中心軸と直交する第一の方向から前記絶縁カバーを前記被接続部材に密着させる第一のステップと、
前記被接続部材に間接活線作業用の工具を接続する第二のステップと、
前記絶縁カバーを前記第一の方向と直交する第二の方向から圧縮して前記第一の方向の前記絶縁カバーの内径を拡げ、前記絶縁カバーと前記被接続部材および前記工具とを分離した状態で、前記絶縁カバーを前記被接続部材と前記工具との接続部に移動させる第三のステップと、
前記絶縁カバーへの圧縮力を取り除き、前記絶縁カバーの弾性力によって前記第一の方向から前記絶縁カバーを前記工具または前記被接続部材に密着させて、前記接続部の周囲を前記絶縁カバーによって覆う第四のステップと、
を有する絶縁カバーの取り付け方法。
An insulating cover configured as an elastic tube is fitted on the outer peripheral surface of the connected member, and the insulating cover is connected to the connected member from a first direction orthogonal to the central axis of the tube by the elastic force of the insulating cover. The first step to adhere to,
A second step of connecting a tool for indirect hot wire work to the connected member;
The insulating cover is compressed from a second direction orthogonal to the first direction to expand the inner diameter of the insulating cover in the first direction, and the insulating cover, the connected member, and the tool are separated. Then, a third step of moving the insulating cover to a connection portion between the connected member and the tool,
The compressive force on the insulating cover is removed, the insulating cover is brought into close contact with the tool or the connected member from the first direction by the elastic force of the insulating cover, and the periphery of the connecting portion is covered with the insulating cover. The fourth step,
A method for attaching an insulating cover.
間接活線作業用の工具と被接続部材との接続部の周囲を覆う絶縁カバーであって、
弾性体のチューブとして構成され、
弾性力によって、前記チューブの中心軸と直交する第一の方向から前記工具または前記被接続部材に密着するとともに、前記第一の方向と直交する第二の方向から圧縮され前記第一の方向の内径が拡げられることにより、前記工具および前記被接続部材から分離される
絶縁カバー。
An insulating cover that covers the periphery of the connection portion between the tool for indirect hot wire work and the connected member,
It is configured as an elastic tube,
The elastic force causes the tool or the connected member to be in close contact with the tool or the connected member from a first direction orthogonal to the central axis of the tube, and is compressed from the second direction orthogonal to the first direction. An insulating cover separated from the tool and the connected member by expanding an inner diameter.
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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61107111U (en) * 1984-12-17 1986-07-07
JPS62135509U (en) * 1986-02-19 1987-08-26
JPH06141453A (en) * 1992-10-27 1994-05-20 Furukawa Electric Co Ltd:The Cable-connection/terminal-treatment insulating tube with built-in diameter-expanding liner and assembling method for cable-connection part or terminal-treatment part

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61107111U (en) * 1984-12-17 1986-07-07
JPS62135509U (en) * 1986-02-19 1987-08-26
JPH06141453A (en) * 1992-10-27 1994-05-20 Furukawa Electric Co Ltd:The Cable-connection/terminal-treatment insulating tube with built-in diameter-expanding liner and assembling method for cable-connection part or terminal-treatment part

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