JP2014128169A - Wire protective tube - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a wire protective tube which can be attached detachably around an insulator and a wire by using an indirect hot-line tool, and prevents shock hazard due to a small animal.SOLUTION: A wire protective tube 1 includes, in the flexible bellows-like body 2, one slit 3 opening with a constant width narrower than the width of a wire below the body 2, a pair of knobs 4, 4 provided, at an interval, along the edges 3a, 3a of the slit 3 facing each other, and projecting downward therefrom while opening, and a tapered constrictive part 5 provided, at one end thereof, with a plurality of radial slits 5a separably. A pair of wire protective tubes 1 are used so that the other ends of the wire protective tubes 1 are located on the opposite sides of the insulator, and a wire is passed through the slit 3 and attached.

Description

  The present invention relates to a wire protective tube attached around a neck portion of an insulator and an electric wire held on the neck portion using a holding tool, and in particular, is formed in a bellows shape from the insulator to the overhead line direction of the electric wire. In addition, the present invention relates to an electric wire protective tube including a slit having a certain width and a pair of knobs provided along an edge of the slit.

First, a conventional electric wire holding portion will be described with reference to FIG.
As shown in FIG. 6, the electric wire 100 is brought into contact with the neck portion 102a of the insulator 102 attached to the arm metal 101 supported by the utility pole (not shown), and the winding bind 103 straddles the electric wire 100 and the neck portion 102a. It is held by the utility pole by being wound spirally. The winding bind 103 is formed by coating a core wire such as a steel wire with an insulator made of resin or the like.
However, the insulator of the winding bind 103 may be damaged due to aging and the core wire may be exposed. In such a case, there has been a problem that small animals such as birds and snakes come into contact with this exposed portion to get an electric shock, and power outages frequently occur.
In order to prevent this, a wire protective cover having a cylindrical shape linearly formed of a synthetic resin such as hard polyethylene has been developed. However, this wire protection cover can be attached only to wires that are installed in a straight line, and cannot be attached to wires that are bent in an arc or the like, thus completely preventing the occurrence of power outage accidents caused by small animals. There was a problem that it was not possible.
Moreover, since indirect hot wire construction methods use indirect hot wire tools in recent years, for example, a wire protection cover having a complicated structure or a structure that does not have a gripping part that can be gripped by the tip of the indirect hot wire tool is applied to the electric wire. There was a problem that it was difficult to attach and detach.
Therefore, in order to solve such problems, in recent years, technologies relating to a freely bendable wire protection cover and a wire protection cover having a gripping portion have been developed, and several inventions and devices have already been developed in this regard. It is disclosed.

Patent Document 1 discloses an invention relating to an electric wire protective cover that can be easily attached to an electric wire bent and installed in an arc shape under the name of “electric wire protective cover”.
Hereinafter, the invention disclosed in Patent Document 1 will be described. The invention related to the electric wire protection cover disclosed in Patent Document 1 is that a cylindrical body made of synthetic resin is formed in a bellows shape by alternately providing convex portions and concave portions in the longitudinal direction, and the cylindrical body is divided in the longitudinal direction. A bellows-shaped guide ridge that allows the electric wire to be introduced to the outside of the cylindrical body along the divided end thereof is opened and closed, and further, the bellows-shaped guide ridge is provided outside one of the bellows-shaped guide ridges. It is characterized in that it is formed by providing a locking protrusion having a hook-like portion that sandwiches the tip of the wire and prevents unnecessary opening.
In the electric wire protective cover having such a feature, the cylindrical body formed in a bellows shape is easily bent at each concave portion, so that the electric wire is bent and installed in an arc shape like an edge line. It is attached without difficulty. In the state where the cylindrical body is attached to the electric wire, the bellows-shaped guide ridge is not opened even at a bent portion, so that it is possible to prevent the spinning line from dropping or dropping off. Therefore, the electric wire protection cover can be easily attached to the electric wire bent in an arc shape and used, and tree branches and leaves can be prevented from entering from the guide protrusion. Further, the creeping distance is ensured by the bellows-shaped guide ridge, and it can be used safely without risk of electric leakage.

Next, Patent Document 2 discloses a device relating to a distribution line covering repair cover dedicated to a charging part in an electric wire under the name of “distribution line covering repair cover”.
The device disclosed in Patent Document 2 is a cylindrical cover body made of a synthetic resin that divides the lower edge along the longitudinal direction and allows both divided edges to freely expand and cover the charging portion of the electric wire. The cover body is opposed to both split edges so as to protrude downward, and an engaging hole is provided on one side, and an engaging hole is provided on the other side for releasably engaging the engaging protrusion. A pair of protruding pieces, a grip piece provided on the cover body and sandwiched by the tip of the hot stick, an electric wire provided on the inner peripheral surface of the cover body and abutting against a charging portion of the electric wire and hitting a cut end surface of the covering layer of the electric wire And an anti-slip piece that prevents unnecessary movement along the line.
In the distribution line covering repair cover having such a feature, one grip piece provided on the cover main body is sandwiched by the tip of the hot stick, and the cover main body is moved down to approach the charging unit and covered. In this state, when the pair of protruding pieces are sandwiched from the outside, the engaging protrusion is inserted into the engaging hole and the engaging claw is engaged with the engaging hole, and the charging portion of the electric wire is covered by the distribution line covering repair cover. Is done. Also, to remove the distribution line covering repair cover, attach a screwdriver to the tip of the hot stick and insert the tip of the screwdriver between the two protruding pieces, so that the engaging claw of the engaging protrusion can be removed from the engaging hole. Removed. In this state, the gripping piece is gripped by the tip of the hot stick, and the distribution line covering repair cover is pulled upward from the electric wire. As described above, when the hot stick is used, it is possible to easily and quickly attach and detach the distribution line covering repair cover to the electric wire.

Japanese Patent Laid-Open No. 7-296662 Registered Utility Model No. 3169138

  However, in the invention disclosed in Patent Document 1, since the guide ridges provided in a pair are also accordion-shaped with a fine cycle, the positions of the guide ridges when they are attached to an electric wire bent in an arc shape. Is liable to be laterally displaced, and there is a possibility that it takes time and effort to hold the locking protrusion with the hook-shaped portion at the correct position corresponding thereto. In addition, it is assumed that the latching protrusion is sandwiched or removed from the hook-shaped part by a direct hot-line work, which is probably a manual operation, and the similar operation is performed by operating an indirect hot-line tool. It is considered difficult to work. Therefore, there is a possibility that the safety of workers cannot be sufficiently ensured.

  Next, in the device disclosed in Patent Document 2, in order to attach / detach the distribution line covering repair cover to / from the charging portion of the electric wire, the engaging claw of the engaging protrusion is engaged with the engaging hole or from the engaging hole. It is necessary to remove. In particular, when removing the engaging claws, it is necessary to attach a screwdriver to the tip of the hot stick and insert the tip of the screwdriver between the protruding pieces. In order to quickly complete such work using a hot stick, it is necessary to master, so it may not be easy for some workers to attach and detach the distribution line covering repair cover. Moreover, since a cylindrical cover main body can be attached only to a linear electric wire, it is considered that this cannot be covered depending on the shape of the electric wire.

  The present invention has been made in response to such a conventional situation, and is capable of reliably preventing an electric shock accident caused by a small animal while having a simple configuration, and using an indirect hot wire tool. And it aims at providing the electric wire protective tube which can be easily attached or detached to the circumference | surroundings of an electric wire.

In order to achieve the above object, an electric wire protective tube according to the invention described in claim 1 is an electric wire protective tube attached around a neck portion of an insulator and an electric wire held on the neck portion using a holder. A pair of main bodies covering at least the electric wire of the electric insulator or the electric wire, each of which is formed in a bellows shape from both ends of the electric insulator along the direction of the wire of the electric wire, and is provided with one slit having a certain width. And a pair of knobs protruding at intervals along the opposing edges of the slit.
In the wire protection tube having such a configuration, the “main body formed in a bellows shape” is a hollow cylindrical tube having a bellows shape configured to be freely bent along the longitudinal direction thereof. In addition, “a pair of main bodies covering at least the electric wire of the electric wires or the electric wires from both ends of the electric wire along the direction of the electric wire” is a structure in which the pair of main bodies are separated with the electric insulator interposed therebetween, or a connection It is meant that any of the structures described is included.
Furthermore, the “slit having a constant width” may be, for example, a slit having a width of 0.5 to 1.0 cm for an electric wire having a diameter of 1.0 to 1.5 cm. It is determined as desired according to the wire diameter. And “a pair of knobs protruding with a gap” may be, for example, a structure in which knobs are provided at three positions near both ends of the main body and the middle thereof. In addition, since the “pair of knobs” are provided along the opposing edges of the slit having a certain width, they are structures that are not locked or closely attached to each other. In addition, as demonstrated using FIG. 6, the electric wire is contact | abutted to the neck part of the insulator, and the winding binding is wound around the electric wire and the neck part, and is hold | maintained at the utility pole.

In the electric wire protection tube having the above-described configuration, since the main body can be freely bent along its longitudinal direction, it has an effect of being attached corresponding to the shape of the curved electric wire in addition to the linear electric wire. Further, in the structure in which the pair of main bodies are separated with the insulator interposed therebetween, the electric wire and the winding binding that are in contact with the neck portion of the insulator are not covered by the main body. On the other hand, in the structure in which a pair of main bodies are connected, the electric wires and the winding binding at the neck are covered by the main bodies.
Moreover, in addition to the main body being formed in a bellows shape, a single slit having a certain width is provided. Therefore, when the slit is pushed into the electric wire or pulled through the slit, the width of the slit is increased. The wire is extended and the wire passes through the slit, and the main body is attached to or detached from the wire. Furthermore, since the pair of knobs protrudes along the opposing edges of the slit, for example, when holding a piece of the pair of shooting parts at the tip of an indirect live wire tool and passing the electric wire through the slit, The main body has an effect of being easily attached to and detached from the electric wire.

Next, the wire protection tube according to the invention described in claim 2 is the wire protection tube according to claim 1, wherein the pair of main bodies are arranged radially at the ends opposite to both ends of the insulator, respectively, with the wire as the center. In the wire protective tube having such a configuration, a pair of main bodies are provided in addition to the action of the invention according to claim 1, wherein a narrowed portion having a tapered shape is formed. When each is attached to an electric wire, the distal end portion of the constricted portion having a tapered shape is pressed against the outer periphery of the electric wire, and the pair of main bodies are suppressed from moving along the direction of the electric wire. On the other hand, when the width of the slit is expanded as described above, the plurality of cuts are separated from each other and the press contact with the electric wire is released. Note that, in the narrowed portion, a portion provided on the extension line of the slit may or may not be provided with a gap in the same manner as the slit.

Furthermore, the wire protection tube according to the invention described in claim 3 is the wire protection tube according to claim 1 or 2, wherein the wire protection tube covers the neck portion of the insulator and connects the pair of main bodies close to both ends of the insulator. A connecting portion is provided.
In the wire protection tube having such a configuration, the “connecting portion covering the neck portion of the insulator” refers to a structure in which the connecting portion circulates in close contact with the outer periphery of the neck portion. Further, the connecting portion may have either a structure integrated with the pair of main bodies or a separate structure.
In addition to the action of the invention according to claim 1 or 2, the electric wire protective tube having the above-described structure has an action that the electric wire abutted on the neck portion and the winding binding are covered by the connecting portion. Further, since the connecting portion connects the pair of main bodies, the shift from the insulator and the electric wire is prevented as compared with the case where the connecting portion is composed of only the pair of main bodies.

And the electric wire protection tube which concerns on invention of Claim 4 is an electric wire protection tube of Claim 3, and a connection part connects the edge part near the both ends of an insulator among the both ends of a pair of main bodies, respectively. A pair of connection parts and an opening closely contacting the peripheral surface of the insulator are provided.
In the wire protective tube having such a configuration, the connecting portion and the pair of main bodies are separate. The “opening closely contacting the peripheral surface of the insulator” refers to a structure in which the opening is positioned below the neck when the connecting part is attached to the insulator. And a pair of connection part is not an obstruction | occlusion hole, but has an open structure where each part continues with the right-and-left end of an opening part.
In the wire protective tube having the above-described configuration, in addition to the operation of the invention according to claim 3, the pair of connection portions respectively connect the end portions near the both end portions of the insulator among the both end portions of the pair of main bodies. When the pair of main bodies are attached to the electric wires, the main bodies are fixed to the electric wires, and the main body is prevented from rotating or dropping. Moreover, since the opening part is provided below the neck part of the insulator, the electric wire and winding binding which are contact | abutted to the neck part are coat | covered with a connection part. In addition, the upper part from the neck of the insulator, that is, the head of the insulator may or may not be covered with the connecting portion.

And the electric wire protection tube which concerns on invention of Claim 5 is an electric wire protection tube of any one of Claim 1 thru | or 4, Out of the edge part which a pair of imaging part or a slit opposes, At least one of them is characterized in that a curved portion that is curved in a facing direction is formed.
In the electric wire protective tube having such a configuration, the “curved portion” may be symmetric with respect to the pair of photographing portions or the slits, or because the curvature of curvature is different from each other, A structure in which the curved portion is wound may be used. Moreover, the front ends of the curved portions may be in close contact with each other, or may be separated from each other with a certain width.
In the wire protection pipe having the above-described configuration, in addition to the action of the invention according to any one of claims 1 to 4, the amount of wind and rainwater that passes through the slit and enters the inside of the main body is reduced. . Therefore, the deterioration is suppressed in the electric wire and the winding binding covered by the main body. In particular, when a curved portion is provided at the opposite edge of the slit, the electric wire is locked to the curved portion, and the main body is less likely to drop off from the electric wire.

Next, the wire protection tube according to the invention described in claim 6 is the wire protection tube according to any one of claims 1 to 5, wherein the wire protection tube is made of a flexible synthetic resin. To do.
In the wire protection tube having such a configuration, in addition to the action of the invention according to any one of claims 1 to 5, since the wire protection tube has flexibility, The shape is easy to change. For this reason, not only a linear electric wire but also a curved electric wire can be used. When no force is applied after the deformation, the wire protective tube immediately returns to the shape before the deformation, so that the shape covering the wire protection tube is maintained after being attached to the wire. Furthermore, since it is made of synthetic resin, it is lightweight and has a certain level of strength. In addition, as synthetic resin, soft polyethylene, soft polyester, etc. are used, for example.

According to the wire protection tube of the first aspect of the present invention, since the pair of main bodies are each formed in a bellows shape, it can be freely bent along the longitudinal direction thereof, and can be linear or curved electric wires. Can be attached to. This is common in both cases where the pair of main bodies are separated and connected to each other. Therefore, the wire protective tube can protect at least a portion of the winding bind wound around the wire regardless of the shape of the wire.
Moreover, since the slit which has a fixed width | variety is provided in the main body from the both ends of an insulator along the overhead wire direction of an electric wire, a main body can be attached or detached to an electric wire by allowing an electric wire to pass through a slit. Therefore, the wire protection tube can be quickly attached to and detached from the wire. Further, since the pair of knobs protrudes along the edge of the slit, it becomes easy for the tip of the indirect live tool to be gripped, and the simplification and safety of work can be ensured. Since the pair of knobs are provided at intervals along the edge of the slit, they do not collide with each other even when the main body is bent relatively strongly with the slit as the inside, Ease can be maintained.

  According to the wire protection tube of claim 2 of the present invention, in addition to the effect of the invention of claim 1, since the pair of main bodies are restrained from moving along the overhead line direction of the wire by the narrowed portion, In the structure in which the pair of main bodies are separated with the insulator interposed therebetween, it is possible to prevent the pair of main bodies from moving away from the insulator. Further, in the structure in which the pair of main bodies are connected with the insulator interposed therebetween, the main bodies are not separated from each other, but the narrowed portion presses the electric wire, so that the possibility of the main body rotating or dropping can be reduced. Therefore, in any structure in which the pair of main bodies are separated and coupled with the insulator interposed therebetween, the winding binding can be reliably protected. In addition, since the plurality of cuts are separated and the pressure contact with the electric wire is released, it is not difficult to remove the main body due to the narrowed portion.

  According to the electric wire protective tube of the third aspect of the present invention, in addition to the effect of the second aspect of the invention, the winding binding around the neck portion can be protected by the connecting portion. Therefore, it is possible to prevent deterioration due to aging of the entire winding bind.

  According to the wire protection tube of claim 4 of the present invention, in addition to the effect of the invention of any one of claims 1 to 3, the connection portion prevents rotation of the pair of main bodies. Therefore, it is possible to avoid a situation in which the wire protective tube itself damages the winding binding. Moreover, since a pair of connection part is each following the left-right end of an opening part, mounting | wearing of the connection part by an indirect hot wire tool is easy.

  According to the electric wire protective tube of the fifth aspect of the present invention, in addition to the effect of the invention according to any one of the first to fourth aspects, the bending of various shapes adapted to the width of the electric wire and the slit. Since the portion can be formed, it is possible to improve the effect of preventing rainwater and the like from falling, and the effect of preventing falling from the electric wire. However, by providing a curved portion, the ease of attachment to an electric wire by an indirect hot wire tool may be slightly reduced, but the fall prevention effect as described above is improved, so that the winding binding is deteriorated as a whole. The advantageous effect of suppression can be exerted.

According to the wire protection tube of claim 6 of the present invention, in addition to the effect of the invention of any one of claims 1 to 5, since the wire protection tube has flexibility, It can be easily detached regardless of the shape. And after mounting | wearing, since the shape which coat | covers an electric wire and a winding binding is maintained, an electric wire etc. can be protected stably. Moreover, even if the covered electric wire and the winding binding are rubbed against the electric wire protective tube, they are hardly damaged. Furthermore, since the wire protection tube is lightweight, there is little fatigue of the worker when attaching and detaching, and the load on the wire being mounted can be almost ignored.
In addition, since the wire protection tube is made of a synthetic resin having a certain degree of strength, it is difficult to be damaged even if the bending operation is repeatedly applied, and there is little deterioration when installed outdoors for a long period of time. .

(A) is a side view of the electric wire protection tube which concerns on Example 1, (b) and (c) are the AA arrow directional cross-sectional views and BB arrow directional view in (a), respectively. It is explanatory drawing at the time of mounting | wearing of the electric wire protection tube which concerns on Example 1. FIG. (A) And (b) is an external view of the electric wire protection tube which concerns on Example 1, respectively. (A) is an external view of the electric wire protection tube which concerns on Example 2, (b) is an external view of the electric wire protection tube which concerns on the modification of Example 2. FIG. (A) is a cross-sectional view of the wire protection tube according to the third embodiment, and (b) is a cross-sectional view of the wire protection tube according to a modification of the third embodiment. It is an external view of a prior art.

A wire protection tube of Example 1 according to an embodiment of the present invention will be described in detail with reference to FIGS. 1 to 3 (mainly corresponding to Claims 1, 2 and 6).
In addition, about the component shown in FIG. 1, the same code | symbol is attached | subjected also in FIG.2 and FIG.3, and the description is abbreviate | omitted.
Fig.1 (a) is a side view of the electric wire protection tube which concerns on Example 1, FIG.1 (b) and FIG.1 (c) are AA sectional view taken on the line in FIG. FIG.

  As shown in FIG. 1A, the wire protection tube 1 of the present embodiment includes a substantially cylindrical main body 2 formed in a bellows shape along the overhead line direction of the electric wire 6 (see FIG. 2), and One slit 3 provided over the entire length, a pair of photographing parts 4 and 4 projecting at three locations along the opposing edges 3a and 3a of the slit 3, and the main body 2 are provided. And a constricted portion 5 having a conical shape. Among them, the narrowed portion 5 is provided with a plurality of cuts 5a cut radially from the substantially conical open portion 5b. The main body 2, the imaging portions 4, 4 and the narrowed portion 5 are integrally formed using flexible soft polyethylene. Further, the length of the main body 2 is about 40 cm, and the horizontal width of the imaging unit 4 and the interval between the imaging units 4 are about 2 cm and about 17 cm, respectively.

  Next, as shown in FIG. 1B, the slit 3 of the main body 2 has a certain width (M in the figure). Further, at the edge portions 3a and 3a, photographing portions 4 and 4 are respectively provided symmetrically with respect to the slit 3 and linearly with the interval extending toward the tip.

Further, as shown in FIG. 1C, the open portion 5 b of the narrowed portion 5 has an elliptical shape, and a portion continuously provided on the extension line of the slit 3 is notched.
Moreover, in FIG.1 (b) and FIG.1 (c), the diameter (L) of the main body 2, the width | variety (M) of the slit 3, the maximum diameter (N) of the open part 5b, and the thickness (T) of the main body 2 are as follows. There are two types (a, b) shown in Table 1 below with respect to the diameter of the electric wire.

Furthermore, with reference to FIG. 2, the installation procedure of the wire protection tube according to the embodiment will be described in more detail. FIG. 2 is an explanatory diagram when the electric wire protection tube according to the first embodiment is mounted.
As shown in FIG. 2, one of the photographing parts 4 and 4 of the main body 2 is gripped by the indirect hot wire tool 7 in the wire protection tube 1. Next, the main body 2 is put on the electric wire 6 from above so that the electric wire 6 passes through the slit 3 while maintaining the state. As shown in Table 1, the diameter of the electric wire 6 is larger than the width (M) of the slit 3, but since the material of the main body 2 is soft polyethylene, the edges 3a, 3a have flexibility and width. (M) is expanded and the electric wire 6 is accommodated in the main body 2. Conversely, when removing the wire protection tube 1 from the electric wire 6, the main body 2 may be pulled out from the electric wire 6 through the slit 3 while holding one of the photographing parts 4, 4 with the indirect hot wire tool 7. The width (M) of the slit 3 may be appropriately determined based on the diameter of the electric wire 6 and the degree of flexibility of the main body 2.

Next, the mounting state of the wire protection tube 1 will be described in more detail with reference to FIG. FIGS. 3A and 3B are external views of the wire protection tube according to the first embodiment.
As shown in FIG. 3A, a pair of wire protection tubes 1, 1 are attached to a straight wire 6. The electric wire 6 is in contact with a neck portion 9a of a lever 9 attached to an arm metal 8 supported by a utility pole (not shown), and is wound with a binding (not shown in FIG. 3A, see FIG. 6). ) Is spirally wound across the electric wire 6 and the neck portion 9a to be held by the electric pole. For this reason, the pair of wire protection tubes 1 and 1 are attached to the electric wire 6 with their end portions opposite to the constriction portion 5 being as close as possible to the insulator 9. Further, the respective narrowed portions 5 and 5 are in pressure contact with the outer periphery of the electric wire 6. At this time, the wound binding wound around the neck portion 9a is not covered by the pair of wire protection tubes 1,1.
Next, as shown in FIG. 3 (b), the pair of wire protection tubes 1, 1 are bent along the curved shape of the wire 6 and attached thereto. Since the narrowed portions 5 and 5 are provided with a plurality of cuts 5 a (see FIG. 1C), the entire narrowed portions 5 and 5 are deformed so as to conform to the curved shape of the electric wire 6. Therefore, the press contact of the constricted portions 5 and 5 to the electric wire 6 is maintained at the same level as in the case of FIG.

In the electric wire protection tube 1 of the present embodiment, since the main body 2 is formed in a bellows shape, the main body 2 is freely bent, and a shape adapted to the direction of the wire 6 is formed. Furthermore, since the main body 2 has flexibility, the slit 3 is easily expanded to a width approximately equal to the diameter of the electric wire 6. In addition, since the width (M) of the slit 3 has a certain size with respect to the diameter of the electric wire 6, the main body 2 can be easily connected through the slit 3 even when the indirect hot wire tool 7 is used. 6 is attached and detached. When no force is applied after the deformation, the wire protection tube 1 immediately tries to return to the shape before the deformation, so that the shape covering the wire 6 is maintained after being attached to the wire 6.
Further, since the photographing portions 4 and 4 are provided so as to protrude by about 2 cm, the main body 2 can be attached to and detached from the electric wire 6 more easily by gripping the photographing portions 4 and 4 with the indirect hot wire tool 7. . In addition, since the imaging | photography parts 4 and 4 are provided in edge part 3a, 3a, the width | variety (M) of the slit 3 is maintained. The ease of attaching and detaching the main body 2 is not lowered by the photographing units 4 and 4.

Further, since the narrowed portion 5 is provided with a plurality of cuts 5a and is cut out between the edge 3a and the edge 3a, when the main body 2 is attached to the electric wire 6, it is cut out. The width of the existing portion expands to the same extent as the slit 3. Subsequently, when the electric wire 6 is accommodated inside the main body 2, the plurality of cuts 5 a have flexibility, so that they are deformed along the outer periphery of the electric wire 6, and their tips are in pressure contact. Therefore, the main body 2 is prevented from moving along the electric wire 6 due to the friction between the notch 5 a and the electric wire 6, and the main body 2 is prevented from rotating around the electric wire 6.
On the contrary, when the main body 2 is removed from the electric wire 6, the slits 3 are expanded and the plurality of cuts 5 a are separated from each other and the press contact with the electric wire 6 is released.

As described above, according to the wire protection tube 1 of the present embodiment, the body 2 can be freely formed into a shape that matches the shape of the wire 6, so that it can be attached to a curved wire 6 in addition to a straight shape. Can do. Moreover, since the shape which coat | covers the electric wire 6 and winding binding is maintained after mounting | wearing, the part which the wire protective tube 1 was wound around the electric wire 6 of winding binding regardless of the shape of the electric wire 6 Can be stably protected. That is, it is possible to avoid the exposure of the core wire due to the secular change of the winding bind wound around the electric wire 6, and it is possible to prevent the occurrence of a power outage accident due to a small animal such as a bird coming into contact with the exposed portion. Is possible.
Further, since the width (M) of the slit 3 has a certain size with respect to the diameter of the electric wire 6, even when the indirect hot wire tool 7 is used, the electric wire protective tube 1 can be quickly connected to the electric wire. 6 can be attached and detached. Furthermore, since the photographing units 4 and 4 can be gripped, the work using the indirect hot-line tool 7 is simplified, so that the work time can be shortened. Therefore, in addition to improving work efficiency, it is possible to further ensure the safety of workers.
And since the width | variety (M) of the slit 3 is maintained in the position where the imaging | photography parts 4 and 4 were provided, the attachment or detachment ease of the main body 2 does not fall by the imaging | photography parts 4 and 4. FIG. Further, since the horizontal width of the image capturing section 4 and the interval between the image capturing sections 4 are about 2 cm and about 17 cm, respectively, they are adjacent even when the main body 2 is bent relatively strongly with the slit 3 inside. The two pairs of the shooting sections 4 and 4 do not collide with each other, and the ease of gripping can be maintained.

Furthermore, since the movement and rotation of the main body 2 are suppressed when the plurality of flexible cuts 5a are in pressure contact with the electric wire 6, damage to the electric wire 6 and the winding binding can be avoided. It is possible to reduce the possibility of the main body 2 being displaced or dropped. Furthermore, compared with the case where the constriction part 5 is not provided, the intrusion of rainwater into the main body 2 can be reduced. On the other hand, the press contact of the main body 2 to the electric wire 6 is released when the plurality of cuts 5a are separated from each other, so that the main body 2 can be easily detached as in the case of mounting.
Furthermore, since the material of the electric wire protection tube 1 is soft polyethylene, even if the bellows-shaped portion of the main body 2 is rubbed against the electric wire 6 and the winding binding after being attached to the electric wire 6, they are hardly damaged. Furthermore, since the wire protection tube 1 is lightweight, there is little fatigue of the worker when attaching and detaching, and the load on the wire 6 being mounted can be almost ignored. In addition, since the soft polyethylene has a certain level of strength, it is difficult to damage even if the bending motion is repeatedly applied. In addition, since there is little deterioration outdoors, the intrusion of rainwater into the main body 2 can be reduced over a long period of time, and also from this point, deterioration of the winding binding can be prevented.

  As described above, the electric wire protection tube 1 is made of soft polyethylene, and has a bellows-shaped main body 2, a slit 3 provided in the main body 2, and a pair of photographing units 4 that protrude in three locations along the slit 3. 4 and the constricted portion 5 provided in a row with the main body 2, the structure is simple and can be manufactured and introduced inexpensively and easily. Further, since soft polyethylene is used as the material, fine size adjustment is easy. Therefore, since the wire protective tube 1 that can be adapted to the shape and diameter of the electric wire 6 can be appropriately manufactured, it has wide versatility.

  In addition, the structure of the electric wire protection tube of this invention is not limited to what is shown in a present Example. For example, the size of the wire protection tube 1 is not limited to that shown in Table 1, and the number of the pair of shooting sections 4 and 4 may be other than 3 pairs per one main body 2. Moreover, between the edge part 3a and the edge part 3a, the some notch 5a does not need to be notched, such as mutually overlapping.

The wire protection tube of Example 2 according to the embodiment of the present invention will be described in detail with reference to FIG. 4 (mainly corresponding to claims 3 and 4).
The constituent elements shown in FIGS. 1 to 3 are denoted by the same reference numerals in FIG. 4 and the description thereof is omitted.
4A is an external view of an electric wire protection tube according to the second embodiment, and FIG. 4B is an external view of an electric wire protection tube according to a modification of the second embodiment.

As shown in FIG. 4A, the wire protection tube 10 of the present embodiment includes a pair of main bodies 2 and 2 and a connecting portion 11 that connects the pair of main bodies 2 and 2 closer to both ends of the insulator 9. Composed. The connecting portion 11 has a semi-cylindrical bellows shape and forms a ring shape that goes around the outer periphery of the neck portion 9a. The connecting portion 11 is integrally formed with the same material as the pair of main bodies 2 and 2.
Next, a modification of the second embodiment will be described with reference to FIG. As shown in FIG.4 (b), the electric wire protection tube 10a which concerns on the modification of a present Example is comprised from a pair of main bodies 2 and 2 and the connection part 12 with which this overlaps partially. The connecting portion 12 includes a pair of connecting portions 12a and 12a that respectively connect the end portions 2a and 2a of the main body 2 near the both ends of the insulator 9, an opening portion 12b that is in close contact with the peripheral surface of the insulator 9, and the head of the insulator 9 And a bag-like portion 12c covering the entire portion 9b. Among these, the opening part 12b is provided below the neck part 9a, and the left and right ends thereof communicate with the connection parts 12a and 12a, respectively. The connecting portion 12 is formed separately from the same material as the pair of main bodies 2 and 2. In addition, although the edge part 2a means one period (valley-valley) in the bellows shape of the main body 2, it may be for several periods. Further, in the present application, the meaning of “connection” means that when the connecting portion 12 is provided separately from the main body 2 as in the modification of the present embodiment, the end 2a of the main body 2 and the connecting portion 12 In addition to fitting by the overlapping bellows shape of the connecting portion 12a, crimping may be used. Further, although not shown in the modification, the connection may be made by integrally providing the main body 2 and the connecting portion 12.
Other configurations relating to the wire protection tubes 10 and 10a of the present embodiment are the same as those of the wire protection tube 1 of the first embodiment.

In the electric wire protection tube 10 of the present embodiment, the connecting portion 11 has a bellows-shaped ring shape, so that the inner diameter of the connecting portion 11 extends beyond the diameter of the head portion 9b when being attached to and detached from the insulator 9, and the neck portion 9a is attached during attachment. In close contact. Moreover, since the connection part 11 is a semi-cylindrical bellows shape, the connection part 11 is attached to the outer periphery of the neck part 9a without a gap, and covers the electric wire 6 and the winding binding that are in contact with the neck part 9a from the outside. Has an effect. In addition, the electric wire 6 and the winding bind in the other part are covered with a pair of main bodies 2 and 2. In addition, since the connecting portion 11 connects the pair of main bodies 2 and 2, the pair of main bodies 2 and 2 are dropped from the insulator 9 and the electric wire 6 compared to the wire protection tube 1 of the first embodiment. Is more prevented.
Other operations are the same as those of the wire protective tube 1 of the first embodiment.

Next, the effect | action of the electric wire protection tube 10a which concerns on the modification of a present Example is demonstrated. The connecting portion 12 is formed of the same material as the main body 2 and has flexibility, and the left and right ends of the opening portion 12b communicate with the connecting portions 12a and 12a, respectively, as viewed in the drawing. Therefore, at the time of attachment / detachment, the inner diameter formed by the opening 12b and the connection parts 12a, 12a extends beyond the diameter of the head 9b. And after attaching to the electric wire 6 and the insulator 9, since the connection part 12 will return immediately to the shape before a deformation | transformation, the opening part 12b closely_contact | adheres to the neck part 9a, and the connection of the main body 2 and the connection part 12 is carried out. This is realized by connecting the end portions 2a and 2a to the connection portions 12a and 12a, respectively. Further, since the opening 12b is provided below the neck portion 9a, the electric wire 6 and the winding binding that are in contact with the neck portion 9a have an effect of being covered by the connecting portion 12. At the same time, the pair of main bodies 2 and 2 are indirectly fixed to the insulator 9 via the connecting portions 12a and 12a, and the rotation of the pair of main bodies 2 and 2 and the drop from the electric wire 6 are prevented. .
Other operations are the same as those of the wire protective tube 1 of the first embodiment.

As described above, according to the wire protection tube 10 of the present embodiment, the wire 6 that is in contact with the neck portion 9a and the winding bind are covered by the connecting portion 11, so that the entire winding bind is protected. Can do. At this time, since the connecting portion 11 is in close contact with the outer periphery of the neck portion 9a, it is possible to reduce the possibility that the wire protection tube 10 is dropped from the insulator 9 due to a strong wind or the like. In addition, therefore, it is possible to prevent deterioration of the entire winding bind due to aging.
Moreover, since the connection part 11 comprises the bellows-shaped ring shape, and the internal diameter is extended more than the diameter of the head 9b at the time of attachment / detachment, attachment / detachment when using the indirect hot wire tool 7 does not become difficult. .
Other effects are the same as those of the wire protective tube 1 of the first embodiment.

Furthermore, the effect of the wire protection tube 10a according to the modification of the present embodiment will be described. The whole winding binding wound around the electric wire 6 and the insulator 9 can be protected by the connecting portion 12 and the pair of main bodies 2 and 2. Among these, since the connection parts 12a and 12a of the connecting part 12 prevent the pair of main bodies 2 and 2 from rotating, the situation where the wire protection tube 10a itself damages the winding binding can be avoided. Moreover, since the opening part 12b is provided under the neck part 9a and the bag-like part 12c covers the whole head 9b of the insulator 9, the winding binding wound around the neck part 9a is exposed to rain water, wind, and snow. There is no. Therefore, deterioration of the winding binding in this portion can be surely prevented.
Furthermore, since the inner diameter formed by the opening 12b and the connecting portions 12a and 12a extends beyond the diameter of the head 9b when attaching and detaching, it is easy to mount the connecting portion 12 with the indirect hot wire tool 7.
Other effects are the same as those of the wire protective tube 1 of the first embodiment.

  In addition, the structure of the electric wire protection tube of this invention is not limited to what is shown in a present Example. For example, the thickness of the connecting portions 11 and 12 may be different from the thickness (T) of the main body 2. In particular, the opening 12b and the connecting portions 12a and 12a may be thicker than the thickness (T) in order to give strength. Moreover, the edge part 2a may have the length for 1 period or more of the bellows shape of the main body 2, and the bag-shaped part 12c does not need to be provided.

The wire protection tube of Example 3 according to the embodiment of the present invention will be described in detail with reference to FIG. 5 (mainly corresponding to claim 5).
1 to 4 are denoted by the same reference numerals in FIG. 5 and description thereof is omitted.
FIG. 5A is a cross-sectional view of the wire protection tube according to the third embodiment, and FIG. 5B is a cross-sectional view of the wire protection tube according to a modification of the third embodiment.

As shown in FIG. 5A, the wire protection tube 13 of the present embodiment includes shooting portions 14, 14 instead of the shooting portions 4, 4 in the wire protection tube 1. The photographing portions 14 and 14 are formed with curved portions 14a and 14a that bend symmetrically about the slit 3 so that the tips thereof face each other. The distance between the tips of the imaging portions 14 and 14 (M _{1 in the} drawing) is slightly smaller than the width of the slit 3 according to the first embodiment (M = 0.5 to 1.0 cm). 8 cm. Further, the interval between the base ends of the image capturing units 14 and 14 (M _{2 in the} figure) is equal to the width (M).
Next, as shown in FIG. 5 (b), the wire protection tube 13 a according to the modification of the present embodiment is symmetrically curved toward the inside of the main body 2 instead of the edges 3 a and 3 a of the slit 3. Edges 3b, 3b are provided. Edges 3b, 3b Interval between (figure _{M 3)} is smaller 0.3~0.8cm than wire diameter (1.0～1.5Cm) or slits 3 of the width (M).
Other configurations relating to the wire protection tubes 13 and 13a of the present embodiment are the same as those of the wire protection tube 1 of the first embodiment.

In the electric wire protection tube 13 of the present embodiment, the distance (M ₁ ) between the tips of the imaging portions 14 and 14 is slightly smaller than the width (M) of the slit 3 according to the first embodiment, and thus passes through the slit 3. As a result, the amount of wind and rainwater entering the main body 2 is reduced.
Other operations are the same as those of the wire protective tube 1 of the first embodiment.

Next, the effect | action of the electric wire protection tube 13a which concerns on the modification of a present Example is demonstrated. In the wire protection tube 13a according to the modified example of the present embodiment, the edges 3b and 3b are curved toward the inside of the main body 2 and the distance (M ₃ ) is smaller than the diameter of the wire. The edges 3b and 3b are easily locked. Therefore, the main body 2 is prevented from dropping from the electric wire 6. This drop prevention effect is slightly larger than that of the wire protective tube 1 of the first embodiment.
Other operations are the same as those of the wire protective tube 1 of the first embodiment.

As described above, according to the electric wire protection tube 13 of the present embodiment, the interval between the distal ends of the imaging units 14 and 14 (M ₁ ) is smaller than the interval between the proximal ends (M ₂ ). The rainwater intrusion into the main body 2 can be reduced, and at the same time, the ease of attaching and detaching the main body 2 to the same extent as that of the wire protection tube 1 according to the first embodiment can be exhibited. In order interval _{(M 1)} as small as ranging from 0.3 to 0.8 cm, possibly attached easily deteriorates slightly to the electric wire 6 can be considered by indirect hot tool 7. However, since the photographing portions 14 and 14 are formed with curved portions 14a and 14a, if they are gripped from the side of the photographing portions 14 and 14, they are equivalent to the photographing portions 4 and 4 according to the first embodiment. The ease of mounting can be demonstrated. Therefore, the distance (M ₁ ) between the curved portions 14a and 14a is not particularly problematic. That is, in the electric wire protection tube 13, since the rainwater intrusion preventing effect is improved as described above and the detachability can be maintained, it is possible to exert the advantageous effect of suppressing the deterioration of the winding binding as a whole.
Other effects are the same as those of the wire protective tube 1 of the first embodiment.

Furthermore, the effect of the wire protection tube 13a according to the modification of the present embodiment will be described. In the wire protection tube 13a according to the modified example of the present embodiment, the edge portions 3b and 3b can exhibit the fall prevention effect more than the wire protection tube 1 according to the first embodiment has. Incidentally, the edge 3b, since 3b spacing (M ₃₎ is smaller than the diameter of the wire, as the wire protection tube 13 of the third embodiment, the mounting ease of by indirect hot tool 7 to the electric wire 6 is slightly There is a possibility of a decrease. However, since the edges 3b and 3b are also made of flexible soft polyethylene, they can be easily expanded by coming into contact with the electric wires 6 when being attached or detached. Accordingly, the ease of attachment is almost negligible.
Other effects are the same as those of the wire protective tube 1 of the first embodiment.

In addition, the structure of the electric wire protection tube of this invention is not limited to what is shown in a present Example. For example, the curved portions 14a and 14a may have a structure in which the curvature of curvature is different from each other and the other curved portion 14a is wound around one curved portion 14a. Further, the distance (M ₁ ) between the tips of the photographing portions 14 and 14 and the distance (M ₃ ) between the edges 3b and 3b may be lengths other than those shown in the present embodiment.

  The invention described in claims 1 to 6 can be used as an electric wire protective tube for covering a winding binding that is a insulator, an electric wire, and an electric wire holder for preventing an electric shock accident by a small animal.

  DESCRIPTION OF SYMBOLS 1,10,10a, 13,13a ... Electric wire protection tube 2 ... Main body 2a ... End part 3 ... Slit 3a, 3b ... Edge part 4,14 ... Shooting part 5 ... Constriction part 5a ... Notch 5b ... Opening part 6,100 ... Electric wire 7 ... Indirect hot wire tool 8, 101 ... Arm 9, 9, 102 ... Insulator 9a, 102a ... Neck part 9b ... Head 11, 12 ... Connection part 12a ... Connection part 12b ... Opening part 12c ... Bag-like part 14a ... Curve Part 103 ... Winding binding

  The present invention relates to a wire protective tube attached around a neck portion of an insulator and an electric wire held on the neck portion using a holding tool, and in particular, is formed in a bellows shape from the insulator to the overhead line direction of the electric wire. In addition, the present invention relates to an electric wire protective tube including a slit having a certain width and a pair of knobs provided along an edge of the slit.

First, a conventional electric wire holding portion will be described with reference to FIG.
As shown in FIG. 6, the electric wire 100 is brought into contact with the neck portion 102a of the insulator 102 attached to the arm metal 101 supported by the utility pole (not shown), and the winding bind 103 straddles the electric wire 100 and the neck portion 102a. It is held by the utility pole by being wound spirally. The winding bind 103 is formed by coating a core wire such as a steel wire with an insulator made of resin or the like.
However, the insulator of the winding bind 103 may be damaged due to aging and the core wire may be exposed. In such a case, there has been a problem that small animals such as birds and snakes come into contact with this exposed portion to get an electric shock, and power outages frequently occur.
In order to prevent this, a wire protective cover having a cylindrical shape linearly formed of a synthetic resin such as hard polyethylene has been developed. However, this wire protection cover can be attached only to wires that are installed in a straight line, and cannot be attached to wires that are bent in an arc or the like, thus completely preventing the occurrence of power outage accidents caused by small animals. There was a problem that it was not possible.
Moreover, since indirect hot wire construction methods use indirect hot wire tools in recent years, for example, a wire protection cover having a complicated structure or a structure that does not have a gripping part that can be gripped by the tip of the indirect hot wire tool is applied to the electric wire. There was a problem that it was difficult to attach and detach.
Therefore, in order to solve such problems, in recent years, technologies relating to a freely bendable wire protection cover and a wire protection cover having a gripping portion have been developed, and several inventions and devices have already been developed in this regard. It is disclosed.

Patent Document 1 discloses an invention relating to an electric wire protective cover that can be easily attached to an electric wire bent and installed in an arc shape under the name of “electric wire protective cover”.
Hereinafter, the invention disclosed in Patent Document 1 will be described. The invention related to the electric wire protection cover disclosed in Patent Document 1 is that a cylindrical body made of synthetic resin is formed in a bellows shape by alternately providing convex portions and concave portions in the longitudinal direction, and the cylindrical body is divided in the longitudinal direction. A bellows-shaped guide ridge that allows the electric wire to be introduced to the outside of the cylindrical body along the divided end thereof is opened and closed, and further, the bellows-shaped guide ridge is provided outside one of the bellows-shaped guide ridges. It is characterized in that it is formed by providing a locking protrusion having a hook-like portion that sandwiches the tip of the wire and prevents unnecessary opening.
In the electric wire protective cover having such a feature, the cylindrical body formed in a bellows shape is easily bent at each concave portion, so that the electric wire is bent and installed in an arc shape like an edge line. It is attached without difficulty. In the state where the cylindrical body is attached to the electric wire, the bellows-shaped guide ridge is not opened even at a bent portion, so that it is possible to prevent the spinning line from dropping or dropping off. Therefore, the electric wire protection cover can be easily attached to the electric wire bent in an arc shape and used, and tree branches and leaves can be prevented from entering from the guide protrusion. Further, the creeping distance is ensured by the bellows-shaped guide ridge, and it can be used safely without risk of electric leakage.

Next, Patent Document 2 discloses a device relating to a distribution line covering repair cover dedicated to a charging part in an electric wire under the name of “distribution line covering repair cover”.
The device disclosed in Patent Document 2 is a cylindrical cover body made of a synthetic resin that divides the lower edge along the longitudinal direction and allows both divided edges to freely expand and cover the charging portion of the electric wire. The cover body is opposed to both split edges so as to protrude downward, and an engaging hole is provided on one side, and an engaging hole is provided on the other side for releasably engaging the engaging protrusion. A pair of protruding pieces, a grip piece provided on the cover body and sandwiched by the tip of the hot stick, an electric wire provided on the inner peripheral surface of the cover body and abutting against a charging portion of the electric wire and hitting a cut end surface of the covering layer of the electric wire And an anti-slip piece that prevents unnecessary movement along the line.
In the distribution line covering repair cover having such a feature, one grip piece provided on the cover main body is sandwiched by the tip of the hot stick, and the cover main body is moved down to approach the charging unit and covered. In this state, when the pair of protruding pieces are sandwiched from the outside, the engaging protrusion is inserted into the engaging hole and the engaging claw is engaged with the engaging hole, and the charging portion of the electric wire is covered by the distribution line covering repair cover. Is done. Also, to remove the distribution line covering repair cover, attach a screwdriver to the tip of the hot stick and insert the tip of the screwdriver between the two protruding pieces, so that the engaging claw of the engaging protrusion can be removed from the engaging hole. Removed. In this state, the gripping piece is gripped by the tip of the hot stick, and the distribution line covering repair cover is pulled upward from the electric wire. As described above, when the hot stick is used, it is possible to easily and quickly attach and detach the distribution line covering repair cover to the electric wire.

Japanese Patent Laid-Open No. 7-296662 Registered Utility Model No. 3169138

  However, in the invention disclosed in Patent Document 1, since the guide ridges provided in a pair are also accordion-shaped with a fine cycle, the positions of the guide ridges when they are attached to an electric wire bent in an arc shape. Is liable to be laterally displaced, and there is a possibility that it takes time and effort to hold the locking protrusion with the hook-shaped portion at the correct position corresponding thereto. In addition, it is assumed that the latching protrusion is sandwiched or removed from the hook-shaped part by a direct hot-line work, which is probably a manual operation, and the similar operation is performed by operating an indirect hot-line tool. It is considered difficult to work. Therefore, there is a possibility that the safety of workers cannot be sufficiently ensured.

  Next, in the device disclosed in Patent Document 2, in order to attach / detach the distribution line covering repair cover to / from the charging portion of the electric wire, the engaging claw of the engaging protrusion is engaged with the engaging hole or from the engaging hole. It is necessary to remove. In particular, when removing the engaging claws, it is necessary to attach a screwdriver to the tip of the hot stick and insert the tip of the screwdriver between the protruding pieces. In order to quickly complete such work using a hot stick, it is necessary to master, so it may not be easy for some workers to attach and detach the distribution line covering repair cover. Moreover, since a cylindrical cover main body can be attached only to a linear electric wire, it is considered that this cannot be covered depending on the shape of the electric wire.

  The present invention has been made in response to such a conventional situation, and is capable of reliably preventing an electric shock accident caused by a small animal while having a simple configuration, and using an indirect hot wire tool. And it aims at providing the electric wire protective tube which can be easily attached or detached to the circumference | surroundings of an electric wire.

In order to achieve the above object, an electric wire protective tube according to the invention described in claim 1 is an electric wire protective tube attached around a neck portion of an insulator and an electric wire held on the neck portion using a holder. along the opposite ends of the insulator in overhead line direction of the electric wire is formed in a bellows shape, respectively, one of slits opened at a constant width smaller than the width of the wire is provided below, of the insulator or cable includes a pair of body with a flexible covering at least the wire, spaced apart along the opposite edges of the slit, and a pair of knob portions projecting downward while opening respectively from the opposite edges , a pair of body on the end opposite to the end portions of the insulator, constriction forming a tapered shape in which a plurality of notches is provided to be spaced radially around the electrical wire are formed respectively with said Rukoto To do.
In the wire protection tube having such a configuration, the “main body formed in a bellows shape” is a hollow cylindrical tube having a bellows shape configured to be freely bent along the longitudinal direction thereof. In addition, “a pair of main bodies covering at least the electric wire of the electric wires or the electric wires from both ends of the electric wire along the direction of the electric wire” is a structure in which the pair of main bodies are separated with the electric insulator interposed therebetween, or a connection It is meant that any of the structures described is included.
Furthermore, “ a slit that is narrower than the width of the electric wire and opened to a constant width ” may be, for example, a slit having a width of 0.5 to 1.0 cm for an electric wire having a diameter of 1.0 to 1.5 cm. However, the width of which dimension is determined as desired according to the wire diameter. And “a pair of knobs protruding at intervals along the opposing edges of the slit ” can be considered as a structure in which the knobs are provided at three positions near both ends of the main body and in the middle thereof. Further, "a pair of knob" is spaced apart along the opposite edges of the slit, as they may protrude downward while opening respectively from opposite edges, a structure in which not mutually engaging, adhesion etc. . In addition, as demonstrated using FIG. 6, the electric wire is contact | abutted to the neck part of the insulator, and the winding binding is wound around the electric wire and the neck part, and is hold | maintained at the utility pole.

In the electric wire protection tube having the above-described configuration, since the main body can be freely bent along its longitudinal direction, it has an effect of being attached corresponding to the shape of the curved electric wire in addition to the linear electric wire. Further, in the structure in which the pair of main bodies are separated with the insulator interposed therebetween, the electric wire and the winding binding that are in contact with the neck portion of the insulator are not covered by the main body. On the other hand, in the structure in which a pair of main bodies are connected, the electric wires and the winding binding at the neck are covered by the main bodies.
In addition to the main body is formed in a bellows shape, through the fact that one of the slits opened in the narrow constant width than the width of the wire is provided below, or push the slit to the wire, or slit When the main body is pulled, the width of the slit is expanded, the electric wire passes through the slit, and the main body is attached to or removed from the electric wire. Further, since the pair of knob portion projects downwardly along the opposing edges of the slit, for example, sandwiching a piece of the pair of hysterectomy viewed portion at the tip such indirect hot tool, passing the wire into the slit And the main body has the effect | action that it is easily attached or detached with respect to an electric wire.
Furthermore, since a pair of main body has flexibility, a shape changes easily at the time of attachment or detachment to an electric wire. For this reason, not only a linear electric wire but also a curved electric wire can be used. In addition, when no force is applied after the deformation, the pair of main bodies attempt to immediately return to the shape before the deformation, so that the shape covering the wire is maintained after being attached to the electric wire.
And when a pair of main body is each attached to an electric wire, the front-end | tip part of the constriction part which forms a taper shape press-contacts to the outer periphery of an electric wire, and it is suppressed that a pair of main body moves along the direction of a wire of an electric wire. On the other hand, when the width of the slit is expanded as described above, the plurality of cuts are separated from each other and the press contact with the electric wire is released. Note that, in the narrowed portion, a portion provided on the extension line of the slit may or may not be provided with a gap in the same manner as the slit.

Next, the wire protection tube according to the invention described in claim 2 is the wire protection tube according to claim 1, wherein the wire protection tube is formed separately from the pair of main bodies, and covers the neck portion of the insulator toward both ends of the insulator. And a connecting portion for connecting the pair of main bodies, the connecting portion being in close contact with the pair of connecting portions for connecting the end portions of the pair of main bodies near the both end portions of the pair of insulators, and the peripheral surface of the insulator and opening, wherein Rukoto equipped with.
Such a configuration of the wire protection tube odor Te, the "connecting portion covering the neck of the insulator" refers to a structure in which connection parts are orbiting in close contact with the outer periphery of the neck portion. Further, the connecting portion is separate from the pair of main bodies. The “opening closely contacting the peripheral surface of the insulator” refers to a structure in which the opening is positioned below the neck when the connecting part is attached to the insulator. And a pair of connection part is not an obstruction | occlusion hole, but has an open structure where each part continues with the right-and-left end of an opening part.
In addition to the operation of the first aspect of the electric wire protection tube having the above-described configuration, the electric wire and the winding binding that are in contact with the neck portion are covered with the connecting portion. Further, since the connecting portion connects the pair of main bodies, the shift from the insulator and the electric wire is prevented as compared with the case where the connecting portion is composed of only the pair of main bodies.
Furthermore, since the pair of connecting portions respectively connect the end portions close to the both end portions of the pair of both ends of the pair of main bodies, when the pair of main bodies are attached to the electric wires, these main bodies are fixed to the electric wires, It has the effect of preventing the main body from rotating and falling. Moreover, since the opening part is provided below the neck part of the insulator, the electric wire and winding binding which are contact | abutted to the neck part are coat | covered with a connection part. In addition, the upper part from the neck of the insulator, that is, the head of the insulator may or may not be covered with the connecting portion.

Furthermore, the wire protection tube according to the invention described in claim 3 is the wire protection tube according to claim 1 or 2 , wherein at least one of the pair of knobs or the opposing edges of the slits is: Curved portions that curve in opposite directions are formed .
In the electric wire protection tube having such a configuration, the “curved portion” may be symmetric with respect to the pair of knobs or slits, or since the curvature of curvature differs from each other, A structure in which the bending portion is wound may be used. Moreover, the front ends of the curved portions may be in close contact with each other, or may be separated from each other with a certain width.
In the electric wire protection pipe having the above-described configuration, in addition to the action of the invention according to claim 1 or 2, the amount of wind and rainwater that passes through the slit and enters the inside of the main body is reduced. Therefore, the deterioration is suppressed in the electric wire and the winding binding covered by the main body. In particular, when a curved portion is provided at the opposite edge of the slit, the electric wire is locked to the curved portion, and the main body is less likely to drop off from the electric wire.

The wire protection tube according to a fourth aspect of the invention, the wire protection tube according to any one of claims 1 to 3, a pair of main body is characterized in that it is made of a synthetic resin .
In the electric wire protective tube having such a configuration, in addition to the action of the invention according to any one of claims 1 to 3, the pair of main bodies are made of synthetic resin, and thus are lightweight and constant. It has a degree of strength. In addition, as synthetic resin, soft polyethylene, soft polyester, etc. are used, for example.

According to the wire protection tube of the first aspect of the present invention, since the pair of main bodies are each formed in a bellows shape, it can be freely bent along the longitudinal direction thereof, and can be linear or curved electric wires. Can be attached to. This is common in both cases where the pair of main bodies are separated and connected to each other. Therefore, the wire protective tube can protect at least a portion of the winding bind wound around the wire regardless of the shape of the wire.
In addition, since the main body has one slit that is narrower than the width of the electric wire and opened to a certain width below the both ends of the insulator along the direction of the wire of the electric wire, let the electric wire pass through the slit. The main body can be attached to or removed from the electric wire. Therefore, the wire protection tube can be quickly attached to and detached from the wire. Furthermore, since the pair of knobs protrude downward while opening from the opposite edges of the slit, it becomes easy for the tip of the indirect live tool to be gripped, ensuring work simplification and safety. Can do. Since the pair of knobs are provided at intervals along the edge of the slit, they do not collide with each other even when the main body is bent relatively strongly with the slit as the inside, Ease can be maintained.
Furthermore, since a pair of main body has flexibility, it can be easily attached or detached irrespective of the shape of an electric wire. And after mounting | wearing, since the shape which coat | covers an electric wire and a winding binding is maintained, an electric wire etc. can be protected stably. Moreover, even if the covered electric wire and the wound binding rub against the pair of main bodies, they are hardly damaged. Further, since the pair of main bodies are lightweight, there is little fatigue of the worker when attaching and detaching, and the load on the electric wire being mounted can be almost ignored.
In addition, since the pair of main bodies are prevented from moving along the direction of the wire of the electric wire by the narrowed portion having the tapered shape, in the structure in which the pair of main bodies are separated with the insulator interposed therebetween, It is possible to prevent the main bodies from moving away from each other. Further, in the structure in which the pair of main bodies are connected with the insulator interposed therebetween, the main bodies are not separated from each other, but the narrowed portion presses the electric wire, so that the possibility of the main body rotating or dropping can be reduced. Therefore, in any structure in which the pair of main bodies are separated and coupled with the insulator interposed therebetween, the winding binding can be reliably protected. In addition, since the plurality of cuts are separated and the pressure contact with the electric wire is released, it is not difficult to remove the main body due to the narrowed portion.

According to the electric wire protective tube of claim 2 of the present invention, in addition to the effect of the invention of claim 1, the winding binding around the neck portion can be protected by the connecting portion. Therefore, it is possible to prevent deterioration due to aging of the entire winding bind.
In addition, since the connection portion prevents the pair of main bodies from rotating, the situation where the wire protection tube itself damages the winding binding can be avoided. Moreover, since a pair of connection part is each following the left-right end of an opening part, mounting | wearing of the connection part by an indirect hot wire tool is easy.

According to the wire protection tube of claim 3 of the present invention, in addition to the effect of the invention of claim 1 or claim 2, forming curved portions of various shapes adapted to the width of the wire or slit. Therefore, it is possible to improve the effect of preventing rainwater and the like from falling and the effect of preventing falling from the electric wire. However, by providing a curved portion, the ease of attachment to an electric wire by an indirect hot wire tool may be slightly reduced, but the fall prevention effect as described above is improved, so that the winding binding is deteriorated as a whole. The advantageous effect of suppression can be exerted.

According to the electric wire protective tube of claim 4 of the present invention, in addition to the effect of the invention of any one of claims 1 to 3, the pair of main bodies is a synthetic resin having a certain degree of strength. Since it is manufactured, it is difficult to damage even if the bending operation is repeatedly applied, and there is little deterioration when installed outdoors for a long period of time.

(A) is a side view of the electric wire protection tube which concerns on Example 1, (b) and (c) are the AA arrow directional cross-sectional views and BB arrow directional view in (a), respectively. It is explanatory drawing at the time of mounting | wearing of the electric wire protection tube which concerns on Example 1. FIG. (A) And (b) is an external view of the electric wire protection tube which concerns on Example 1, respectively. (A) is an external view of the electric wire protection tube which concerns on Example 2, (b) is an external view of the electric wire protection tube which concerns on the modification of Example 2. FIG. (A) is a cross-sectional view of the wire protection tube according to the third embodiment, and (b) is a cross-sectional view of the wire protection tube according to a modification of the third embodiment. It is an external view of a prior art.

The wire protection tube of Example 1 according to the embodiment of the present invention will be described in detail with reference to FIGS. 1 to 3 (mainly corresponding to claims 1 and 4 ).
In addition, about the component shown in FIG. 1, the same code | symbol is attached | subjected also in FIG.2 and FIG.3, and the description is abbreviate | omitted.
Fig.1 (a) is a side view of the electric wire protection tube which concerns on Example 1, FIG.1 (b) and FIG.1 (c) are AA sectional view taken on the line in FIG. FIG.

As shown in FIG. 1A, the wire protection tube 1 of the present embodiment includes a substantially cylindrical main body 2 formed in a bellows shape along the overhead line direction of the electric wire 6 (see FIG. 2), and and one slit 3 provided over the entire length, the opposite edges 3a of the slit 3, a pair of hysterectomy viewed portions 4 projecting at three locations along the 3a, provided continuous with the main body 2, substantially And a constricted portion 5 having a conical shape. Among them, the narrowed portion 5 has a tapered shape, and is provided with a plurality of cuts 5a that are radially cut from the substantially conical open portion 5b around the electric wire 6 and can be separated from each other . These body 2, hysterectomy viewed portions 4 and the narrowed portion 5 are integrally formed by using a soft polyethylene having flexibility. The length of the main body 2 is about 40 cm, width and hysterectomy viewed 4 interval between the hysterectomy viewed portion 4 are about 2 cm, about 17cm.

Next, as shown in FIG. 1B, the slit 3 of the main body 2 has a certain width (M in the figure). Furthermore, the edge 3a, the 3a, in each symmetrically about hysterectomy viewed portions 4 is the slit 3, provided so as to protrude downward in linearly body 2 while extended as comprising the distance to the tip .

Further, as shown in FIG. 1C, the open portion 5 b of the narrowed portion 5 has an elliptical shape, and a portion continuously provided on the extension line of the slit 3 is notched.
Moreover, in FIG.1 (b) and FIG.1 (c), the diameter (L) of the main body 2, the width | variety (M) of the slit 3, the maximum diameter (N) of the open part 5b, and the thickness (T) of the main body 2 are as follows. There are two types (a, b) shown in Table 1 below with respect to the diameter of the electric wire. That is, a single slit 3 narrower than the diameter of the electric wire and opened to a constant width (M) is provided below the main body 2.

Furthermore, with reference to FIG. 2, the installation procedure of the wire protection tube according to the embodiment will be described in more detail. FIG. 2 is an explanatory diagram when the electric wire protection tube according to the first embodiment is mounted.
As shown in FIG. 2, the wire protection tube 1, of the hysterectomy viewed portions 4 body 2, one is gripped by indirect hot tool 7. Next, the main body 2 is put on the electric wire 6 from above so that the electric wire 6 passes through the slit 3 while maintaining the state. As shown in Table 1, the diameter of the electric wire 6 is larger than the width (M) of the slit 3, but since the material of the main body 2 is soft polyethylene, the edges 3a, 3a have flexibility and width. (M) is expanded and the electric wire 6 is accommodated in the main body 2. Conversely, when removing the electric wire protection tube 1 from the wire 6, while gripping one of hysterectomy viewed portions 4 by indirect hot tool 7 may be pulled out of the main body 2 from the wire 6 through the slit 3. The width (M) of the slit 3 may be appropriately determined based on the diameter of the electric wire 6 and the degree of flexibility of the main body 2.

Next, the mounting state of the wire protection tube 1 will be described in more detail with reference to FIG. FIGS. 3A and 3B are external views of the wire protection tube according to the first embodiment.
As shown in FIG. 3A, a pair of wire protection tubes 1, 1 are attached to a straight wire 6. The electric wire 6 is in contact with a neck portion 9a of a lever 9 attached to an arm metal 8 supported by a utility pole (not shown), and is wound with a binding (not shown in FIG. 3A, see FIG. 6). ) Is spirally wound across the electric wire 6 and the neck portion 9a to be held by the electric pole. For this reason, the pair of wire protection tubes 1 and 1 are attached to the electric wire 6 with their end portions opposite to the constriction portion 5 being as close as possible to the insulator 9. Further, the respective narrowed portions 5 and 5 are in pressure contact with the outer periphery of the electric wire 6. At this time, the wound binding wound around the neck portion 9a is not covered by the pair of wire protection tubes 1,1.
Next, as shown in FIG. 3 (b), the pair of wire protection tubes 1, 1 are bent along the curved shape of the wire 6 and attached thereto. Since the narrowed portions 5 and 5 are provided with a plurality of notches 5a (see FIG. 1C) that can be separated from each other, the entire narrowed portions 5 and 5 are deformed so as to conform to the curved shape of the electric wire 6. ing. Therefore, the press contact of the constricted portions 5 and 5 to the electric wire 6 is maintained at the same level as in the case of FIG.

In the electric wire protection tube 1 of the present embodiment, since the main body 2 is formed in a bellows shape, the main body 2 is freely bent, and a shape adapted to the direction of the wire 6 is formed. Furthermore, since the main body 2 has flexibility, the slit 3 is easily expanded to a width approximately equal to the diameter of the electric wire 6. In addition, since the width (M) of the slit 3 has a certain size with respect to the diameter of the electric wire 6, the main body 2 can be easily connected through the slit 3 even when the indirect hot wire tool 7 is used. 6 is attached and detached. When no force is applied after the deformation, the wire protection tube 1 immediately tries to return to the shape before the deformation, so that the shape covering the wire 6 is maintained after being attached to the wire 6.
Further, since the hysterectomy seen portions 4 is provided to protrude approximately 2 cm, by gripping the hysterectomy viewed portions 4 in an indirect hot tool 7, it is removably body 2 more easily into the wire 6 . Since hysterectomy viewed portions 4 are provided edge 3a, the 3a, the width of the slit 3 (M) is maintained. Not drop quick release of the body 2 by hysterectomy viewed portions 4.

Further, since the narrowed portion 5 is provided with a plurality of cuts 5a and is cut out between the edge 3a and the edge 3a, when the main body 2 is attached to the electric wire 6, it is cut out. The width of the existing portion expands to the same extent as the slit 3. Subsequently, when the electric wire 6 is accommodated inside the main body 2, the plurality of cuts 5 a have flexibility, so that they are deformed along the outer periphery of the electric wire 6, and their tips are in pressure contact. Therefore, the main body 2 is prevented from moving along the electric wire 6 due to the friction between the notch 5 a and the electric wire 6, and the main body 2 is prevented from rotating around the electric wire 6.
On the contrary, when the main body 2 is removed from the electric wire 6, the slits 3 are expanded and the plurality of cuts 5 a are separated from each other and the press contact with the electric wire 6 is released.

As described above, according to the wire protection tube 1 of the present embodiment, the body 2 can be freely formed into a shape that matches the shape of the wire 6, so that it can be attached to a curved wire 6 in addition to a straight shape. Can do. Moreover, since the shape which coat | covers the electric wire 6 and winding binding is maintained after mounting | wearing, the part which the wire protective tube 1 was wound around the electric wire 6 of winding binding regardless of the shape of the electric wire 6 Can be stably protected. That is, it is possible to avoid the exposure of the core wire due to the secular change of the winding bind wound around the electric wire 6, and it is possible to prevent the occurrence of a power outage accident due to a small animal such as a bird coming into contact with the exposed portion. Is possible.
Further, since the width (M) of the slit 3 has a certain size with respect to the diameter of the electric wire 6, even when the indirect hot wire tool 7 is used, the electric wire protective tube 1 can be quickly connected to the electric wire. 6 can be attached and detached. Furthermore, since it is possible gripping the hysterectomy viewed 4, 4 that protrude into the lower body 2, as a result of work using an indirect hot tool 7 is simplified, it is possible to shorten the work time . Therefore, in addition to improving work efficiency, it is possible to further ensure the safety of workers.
Since the in position hysterectomy viewed portions 4 is provided the width of the slit 3 (M) is maintained, it does not decrease the quick release of the body 2 by hysterectomy viewed portions 4. The horizontal width and hysterectomy viewed 4 interval between the hysterectomy viewed portion 4 are about 2 cm, since it is about 17cm, adjacent even when allowed to relatively strongly bent body 2 a slit 3 as the inner hysterectomy viewed portions 4 between the two pairs do not collide with each other, it is possible to maintain the ease of gripping.

Furthermore, since the movement and rotation of the main body 2 are suppressed when the plurality of flexible cuts 5a are in pressure contact with the electric wire 6, damage to the electric wire 6 and the winding binding can be avoided. It is possible to reduce the possibility of the main body 2 being displaced or dropped. Furthermore, compared with the case where the constriction part 5 is not provided, the intrusion of rainwater into the main body 2 can be reduced. On the other hand, the press contact of the main body 2 to the electric wire 6 is released when the plurality of cuts 5a are separated from each other, so that the main body 2 can be easily detached as in the case of mounting.
Furthermore, since the material of the electric wire protection tube 1 is soft polyethylene, even if the bellows-shaped portion of the main body 2 is rubbed against the electric wire 6 and the winding binding after being attached to the electric wire 6, they are hardly damaged. Furthermore, since the wire protection tube 1 is lightweight, there is little fatigue of the worker when attaching and detaching, and the load on the wire 6 being mounted can be almost ignored. In addition, since the soft polyethylene has a certain level of strength, it is difficult to damage even if the bending motion is repeatedly applied. In addition, since there is little deterioration outdoors, the intrusion of rainwater into the main body 2 can be reduced over a long period of time, and also from this point, deterioration of the winding binding can be prevented.

As described above, the wire protection tube 1, a soft polyethylene and the material, the main body 2 of the bellows shape, a slit 3 provided in the main body 2, a pair of hysterectomy viewed portion 4 which projects three positions along the slit 3, 4 and the constricted portion 5 provided in a row with the main body 2, the structure is simple and can be manufactured and introduced inexpensively and easily. Further, since soft polyethylene is used as the material, fine size adjustment is easy. Therefore, since the wire protective tube 1 that can be adapted to the shape and diameter of the electric wire 6 can be appropriately manufactured, it has wide versatility.

In addition, the structure of the electric wire protection tube of this invention is not limited to what is shown in a present Example. For example, the size of the wire protection tube 1 is not limited to those shown in Table 1, the number of the pair of hysterectomy viewed portions 4 may be other than three pairs in the body 2 per one. Moreover, between the edge part 3a and the edge part 3a, the some notch 5a does not need to be notched, such as mutually overlapping.

The wire protection tube of Example 2 according to the embodiment of the present invention will be described in detail with reference to FIG. 4 (mainly corresponding to claim 2 ).
The constituent elements shown in FIGS. 1 to 3 are denoted by the same reference numerals in FIG. 4 and the description thereof is omitted.
4A is an external view of an electric wire protection tube according to the second embodiment, and FIG. 4B is an external view of an electric wire protection tube according to a modification of the second embodiment.

As shown in FIG. 4A, the wire protection tube 10 of the present embodiment includes a pair of main bodies 2 and 2 and a connecting portion 11 that connects the pair of main bodies 2 and 2 closer to both ends of the insulator 9. Composed. The connecting portion 11 has a semi-cylindrical bellows shape and forms a ring shape that goes around the outer periphery of the neck portion 9a. The connecting portion 11 is integrally formed with the same material as the pair of main bodies 2 and 2.
Next, a modification of the second embodiment will be described with reference to FIG. As shown in FIG.4 (b), the electric wire protection tube 10a which concerns on the modification of a present Example is comprised from a pair of main bodies 2 and 2 and the connection part 12 with which this overlaps partially. The connecting portion 12 includes a pair of connecting portions 12a and 12a that respectively connect the end portions 2a and 2a of the main body 2 near the both ends of the insulator 9, an opening portion 12b that is in close contact with the peripheral surface of the insulator 9, and the head of the insulator 9 And a bag-like portion 12c covering the entire portion 9b. Among these, the opening part 12b is provided below the neck part 9a, and the left and right ends thereof communicate with the connection parts 12a and 12a, respectively. The connecting portion 12 is formed separately from the same material as the pair of main bodies 2 and 2. In addition, although the edge part 2a means one period (valley-valley) in the bellows shape of the main body 2, it may be for several periods. Further, in the present application, the meaning of “connection” means that when the connecting portion 12 is provided separately from the main body 2 as in the modification of the present embodiment, the end 2a of the main body 2 and the connecting portion 12 In addition to fitting by the overlapping bellows shape of the connecting portion 12a, crimping may be used. Further, although not shown in the modification, the connection may be made by integrally providing the main body 2 and the connecting portion 12.
Other configurations relating to the wire protection tubes 10 and 10a of the present embodiment are the same as those of the wire protection tube 1 of the first embodiment.

In the electric wire protection tube 10 of the present embodiment, the connecting portion 11 has a bellows-shaped ring shape, so that the inner diameter of the connecting portion 11 extends beyond the diameter of the head portion 9b when being attached to and detached from the insulator 9, and the neck portion 9a is attached during attachment. In close contact. Moreover, since the connection part 11 is a semi-cylindrical bellows shape, the connection part 11 is attached to the outer periphery of the neck part 9a without a gap, and covers the electric wire 6 and the winding binding that are in contact with the neck part 9a from the outside. Has an effect. In addition, the electric wire 6 and the winding bind in the other part are covered with a pair of main bodies 2 and 2. In addition, since the connecting portion 11 connects the pair of main bodies 2 and 2, the pair of main bodies 2 and 2 are dropped from the insulator 9 and the electric wire 6 compared to the wire protection tube 1 of the first embodiment. Is more prevented.
Other operations are the same as those of the wire protective tube 1 of the first embodiment.

Next, the effect | action of the electric wire protection tube 10a which concerns on the modification of a present Example is demonstrated. The connecting portion 12 is formed of the same material as the main body 2 and has flexibility, and the left and right ends of the opening portion 12b communicate with the connecting portions 12a and 12a, respectively, as viewed in the drawing. Therefore, at the time of attachment / detachment, the inner diameter formed by the opening 12b and the connection parts 12a, 12a extends beyond the diameter of the head 9b. And after attaching to the electric wire 6 and the insulator 9, since the connection part 12 will return immediately to the shape before a deformation | transformation, the opening part 12b closely_contact | adheres to the neck part 9a, and the connection of the main body 2 and the connection part 12 is carried out. This is realized by connecting the end portions 2a and 2a to the connection portions 12a and 12a, respectively. Further, since the opening 12b is provided below the neck portion 9a, the electric wire 6 and the winding binding that are in contact with the neck portion 9a have an effect of being covered by the connecting portion 12. At the same time, the pair of main bodies 2 and 2 are indirectly fixed to the insulator 9 via the connecting portions 12a and 12a, and the rotation of the pair of main bodies 2 and 2 and the drop from the electric wire 6 are prevented. .
Other operations are the same as those of the wire protective tube 1 of the first embodiment.

As described above, according to the wire protection tube 10 of the present embodiment, the wire 6 that is in contact with the neck portion 9a and the winding bind are covered by the connecting portion 11, so that the entire winding bind is protected. Can do. At this time, since the connecting portion 11 is in close contact with the outer periphery of the neck portion 9a, it is possible to reduce the possibility that the wire protection tube 10 is dropped from the insulator 9 due to a strong wind or the like. In addition, therefore, it is possible to prevent deterioration of the entire winding bind due to aging.
Moreover, since the connection part 11 comprises the bellows-shaped ring shape, and the internal diameter is extended more than the diameter of the head 9b at the time of attachment / detachment, attachment / detachment when using the indirect hot wire tool 7 does not become difficult. .
Other effects are the same as those of the wire protective tube 1 of the first embodiment.

Furthermore, the effect of the wire protection tube 10a according to the modification of the present embodiment will be described. The whole winding binding wound around the electric wire 6 and the insulator 9 can be protected by the connecting portion 12 and the pair of main bodies 2 and 2. Among these, since the connection parts 12a and 12a of the connecting part 12 prevent the pair of main bodies 2 and 2 from rotating, the situation where the wire protection tube 10a itself damages the winding binding can be avoided. Moreover, since the opening part 12b is provided under the neck part 9a and the bag-like part 12c covers the whole head 9b of the insulator 9, the winding binding wound around the neck part 9a is exposed to rain water, wind, and snow. There is no. Therefore, deterioration of the winding binding in this portion can be surely prevented.
Furthermore, since the inner diameter formed by the opening 12b and the connecting portions 12a and 12a extends beyond the diameter of the head 9b when attaching and detaching, it is easy to mount the connecting portion 12 with the indirect hot wire tool 7.
Other effects are the same as those of the wire protective tube 1 of the first embodiment.

  In addition, the structure of the electric wire protection tube of this invention is not limited to what is shown in a present Example. For example, the thickness of the connecting portions 11 and 12 may be different from the thickness (T) of the main body 2. In particular, the opening 12b and the connecting portions 12a and 12a may be thicker than the thickness (T) in order to give strength. Moreover, the edge part 2a may have the length for 1 period or more of the bellows shape of the main body 2, and the bag-shaped part 12c does not need to be provided.

The wire protection tube of Example 3 according to the embodiment of the present invention will be described in detail with reference to FIG. 5 (mainly corresponding to claim 3 ).
1 to 4 are denoted by the same reference numerals in FIG. 5 and description thereof is omitted.
FIG. 5A is a cross-sectional view of the wire protection tube according to the third embodiment, and FIG. 5B is a cross-sectional view of the wire protection tube according to a modification of the third embodiment.

As shown in FIG. 5 (a), the wire protection tube 13 of the present embodiment includes a hysterectomy viewed portions 14 instead of hysterectomy viewed portions 4 of the wire protection tube 1. Hysterectomy viewed portion 14 and 14, so that a state where the tip facing each other, the curved portion 14a symmetrically curved about the slit 3, 14a are formed. Spacing between the tips of the hysterectomy viewed portions 14, 14 (in the figure _{M 1)} is slightly smaller than the width of the slit 3 according to Example 1 (M = 0.5~1.0cm) 0.3~0. 8 cm. The distance between the proximal ends of hysterectomy viewed 14, 14 (in the figure _{M 2)} is equivalent to the width (M).
Next, as shown in FIG. 5 (b), the wire protection tube 13 a according to the modification of the present embodiment is symmetrically curved toward the inside of the main body 2 instead of the edges 3 a and 3 a of the slit 3. Edges 3b, 3b are provided. Edges 3b, 3b Interval between (figure _{M 3)} is smaller 0.3~0.8cm than wire diameter (1.0～1.5Cm) or slits 3 of the width (M).
Other configurations relating to the wire protection tubes 13 and 13a of the present embodiment are the same as those of the wire protection tube 1 of the first embodiment.

Since in the wire protection tube 13 of the present embodiment, the distance between the tips of hysterectomy viewed portion 14, 14 (M ₁₎ is slightly smaller than the width of the slit 3 according to Example 1 (M), passes through the slit 3 As a result, the amount of wind and rainwater entering the main body 2 is reduced.
Other operations are the same as those of the wire protective tube 1 of the first embodiment.

Next, the effect | action of the electric wire protection tube 13a which concerns on the modification of a present Example is demonstrated. In the wire protection tube 13a according to the modified example of the present embodiment, the edges 3b and 3b are curved toward the inside of the main body 2 and the distance (M ₃ ) is smaller than the diameter of the wire. The edges 3b and 3b are easily locked. Therefore, the main body 2 is prevented from dropping from the electric wire 6. This drop prevention effect is slightly larger than that of the wire protective tube 1 of the first embodiment.
Other operations are the same as those of the wire protective tube 1 of the first embodiment.

As described above, according to the wire protection tube 13 of the present embodiment, the distance between the tips of hysterectomy viewed portion 14, 14 (M ₁₎ is, from a smaller configuration than the distance between the proximal end (M _2), The rainwater intrusion into the main body 2 can be reduced, and at the same time, the ease of attaching and detaching the main body 2 to the same extent as that of the wire protection tube 1 according to the first embodiment can be exhibited. In order interval _{(M 1)} as small as ranging from 0.3 to 0.8 cm, possibly attached easily deteriorates slightly to the electric wire 6 can be considered by indirect hot tool 7. However, the curved portion 14a in the hysterectomy viewed portions 14, since 14a is formed, comparable to hysterectomy viewed portions 4, 4 of this Example 1 when gripping from the side of hysterectomy seen 14, 14 The ease of mounting can be demonstrated. Therefore, the distance (M ₁ ) between the curved portions 14a and 14a is not particularly problematic. That is, in the electric wire protection tube 13, since the rainwater intrusion preventing effect is improved as described above and the detachability can be maintained, it is possible to exert the advantageous effect of suppressing the deterioration of the winding binding as a whole.
Other effects are the same as those of the wire protective tube 1 of the first embodiment.

Furthermore, the effect of the wire protection tube 13a according to the modification of the present embodiment will be described. In the wire protection tube 13a according to the modified example of the present embodiment, the edge portions 3b and 3b can exhibit the fall prevention effect more than the wire protection tube 1 according to the first embodiment has. Incidentally, the edge 3b, since 3b spacing (M ₃₎ is smaller than the diameter of the wire, as the wire protection tube 13 of the third embodiment, the mounting ease of by indirect hot tool 7 to the electric wire 6 is slightly There is a possibility of a decrease. However, since the edges 3b and 3b are also made of flexible soft polyethylene, they can be easily expanded by coming into contact with the electric wires 6 when being attached or detached. Accordingly, the ease of attachment is almost negligible.
Other effects are the same as those of the wire protective tube 1 of the first embodiment.

In addition, the structure of the electric wire protection tube of this invention is not limited to what is shown in a present Example. For example, the curved portions 14a and 14a may have a structure in which the curvature of curvature is different from each other and the other curved portion 14a is wound around one curved portion 14a. The distance between the tips of hysterectomy viewed portion 14, 14 _{(M 1)} and the edge 3b, 3b spacing _{(M 3)} may have a length other than those indicated in this embodiment, respectively.

The invention described in claims 1 to 4 can be used as an electric wire protective tube for covering a winding binding which is an insulator, electric wire and electric wire holding tool for preventing an electric shock accident by a small animal.

1,10,10a, 13,13a ... wire protection tube 2 ... body 2a ... end 3 ... slit 3a, 3b ... edge 4,14 ... hysterectomy viewed 5 ... constriction 5a ... notch 5b ... opening 6,100 ... Electric wire 7 ... Indirect hot wire tool 8, 101 ... Arm 9, 9, 102 ... Insulator 9a, 102a ... Neck part 9b ... Head 11, 12 ... Connection part 12a ... Connection part 12b ... Opening part 12c ... Bag-like part 14a ... Curve Part 103 ... Winding binding

Claims (6)

A wire protective tube attached around the neck of the insulator and the electric wire held on the neck using a holding tool,
Each of the insulators is formed in a bellows shape from both ends of the insulator along the direction of the wire, and a slit having a certain width is provided to cover at least the insulator of the insulator or the wire. A pair of bodies;
A wire protection tube comprising: a pair of knobs protruding at intervals along the opposing edges of the slit.   The pair of main bodies is formed with a narrowed portion having a tapered shape in which a plurality of notches are provided radially around the electric wire at the end opposite to both ends of the insulator. The wire protective tube according to claim 1.   The wire protective tube according to claim 1 or 2, further comprising a connecting portion that covers a neck portion of the insulator and connects the pair of main bodies near both ends of the insulator.   The connecting portion includes a pair of connection portions that respectively connect end portions close to both end portions of the insulator among both end portions of the pair of main bodies, and an opening portion that is in close contact with a peripheral surface of the insulator. The wire protection tube according to claim 3, wherein   5. The curved portion that curves in the opposing direction is formed on at least one of the pair of shooting portions or the opposed edge portions of the slit. The wire protective tube according to claim 1. The wire protective tube according to any one of claims 1 to 5, wherein the wire protective tube is made of a synthetic resin having flexibility.

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