Cable fixture and cable fixture structure

Abstract

To provide a cable fixture capable of suppressing accumulation of rainwater, and reducing generation of tracking due to contamination that is accumulated due to an insufficient rain washing effect, and provide a cable fixture structure using the same.SOLUTION: A cable fixture 1 comprises: a fixture winding hook part 10 into which an intermediate part of a liner body 1a is annularly formed; a cross part 11 that is provided to the fixture winding hook part 10, and to which the liner body 1a is crossed; and a first leg part 12 and a second leg part 13 that are extended from the cross part 11, and in which the liner body 1a is extended in a screw shape. The fixture winding hook part 10 is wound and hooked to a winding hook trunk part 20 of an insulator 2 with an electric wire winding hook part 30 of an electric wire 3. The first leg part 12 is entwined to a first extension part 31 extended from one end of the electric wire winding hook part 30. The second leg part 13 is entwined to a second extension part 32 extended from the other end of the electric wire winding hook part 30. When the first extension part 31 and the second extension part 32 are separated and deformed so as to expand the electric wire winding hook part 30, the cross part 11 is acted so as to contract the fixture winding hook part 10.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a wire fixing tool for fixing a wire to an insulator and a wire fixing structure using the same.

Background Art

[0002] For example, as described in Patent Documents 1 and 2 below, fixing a wire to an insulator using a wire fixing tool has been performed.

[0003] In Patent Document 1, it is proposed to wind a wire around a winding barrel portion of an insulator, align the wire extending portions on both sides of the wound portion in parallel, and wind and fix the spiral legs of a wire fixing tool (hooking wire-like body) thereon.

[0004] In Patent Document 2, a configuration is proposed in which an intermediate portion of a wire is tightly coupled and supported by an insulator via a wire fixing tool (spiral binder). More specifically, Patent Document 2 proposes engaging an intermediate portion of a wire fixing tool with an insulator, winding both legs of the wire fixing tool around each other a suitable number of times, bending both legs to form expanded legs, and winding the spiral of the expanded legs around the intermediate portion of the wire.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0006] In a configuration such as that of Patent Document 1, since the spiral legs of the wire fixture are wound around the wire extending portions aligned in parallel, the wire extending portions on both sides are in close contact with each other, and rainwater is likely to accumulate between the wire extending portions. For this reason, between the wire extending portions, the effect of washing away dirt by rainwater (hereinafter referred to as the "rain washing effect") is small, and dirt is likely to accumulate. If dirt accumulates between the wire extending portions, there is a risk of tracking occurring.

[0007] In a configuration such as that of Patent Document 2, although the wires themselves do not exist in close contact, rainwater is likely to accumulate in the portion where an appropriate number of both legs of the wire fixture are wound around each other, and in this portion, the rain washing effect is small and dirt is likely to accumulate. If dirt accumulates in the wound portion, there is also a risk of tracking occurring.

[0008] The present invention has been made to solve the above problems, and one of its objects is to provide a wire fixture and a wire fixing structure that can suppress the accumulation of rainwater and reduce the risk of tracking caused by dirt accumulated due to an insufficient rain washing effect.

Means for Solving the Problems

[0009] The wire fixture according to the present invention is, in one embodiment, a wire fixture for fixing a wire to an insulator, including a fixture winding portion in which an intermediate portion of a linear body is formed in an annular shape, an intersection portion provided in the fixture winding portion where the linear bodies intersect, and a first leg portion and a second leg portion each extending from the intersection portion and formed so that the linear bodies extend in a spiral shape. The fixture winding portion is wound around the winding barrel portion of the insulator together with the wire winding portion of the wire, the first leg portion is wound around the first extending portion extending from one end of the wire winding portion, the second leg portion is wound around the second extending portion extending from the other end of the wire winding portion, and the intersection portion acts to contract the fixture winding portion when the first extending portion and the second extending portion are displaced in a direction away from each other so as to expand the wire winding portion.

[0010] In one embodiment, the wire fixing structure according to the present invention is a wire fixing structure including the above-described wire fixing tool and a wire fixed to an insulator by the wire fixing tool. The wire has a wire winding portion, a first extending portion extending from one end of the wire winding portion, and a second extending portion extending from the other end of the wire winding portion. The fixing tool winding portion and the wire winding portion are wound around the winding barrel portion of the insulator. The first leg portion is wound around the first extending portion, and the second leg portion is wound around the second extending portion. The crossing portion is configured to act so as to contract the fixing tool winding portion when the first extending portion and the second extending portion are displaced in a direction away from each other so as to expand the wire winding portion.

Effects of the Invention

[0011] According to one embodiment of the wire fixing tool and the wire fixing structure of the present invention, since the crossing portion acts so as to contract the fixing tool winding portion when the first extending portion and the second extending portion are displaced in a direction away from each other so as to expand the wire winding portion, it is possible to reduce the necessity of bringing the extending portion of the wire into close contact or winding the leg portions of the wire fixing tool around each other. As a result, it is possible to suppress the accumulation of rainwater, and it is possible to reduce the risk of tracking caused by dirt accumulated due to an insufficient rain washing effect.

Brief Description of the Drawings

[0012]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Embodiments for Carrying Out the Invention

[0013] Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings. The present invention is not limited to each embodiment, and components can be modified and embodied without departing from the gist thereof. Further, various inventions can be formed by appropriately combining a plurality of components disclosed in each embodiment. For example, some components may be deleted from all the components shown in the embodiment. Furthermore, components of different embodiments may be appropriately combined.

[0014] FIG. 1 is a perspective view showing a wire fixing structure according to an embodiment of the present invention, and shows a usage mode of the wire fixture 1. FIG. 2 is a front view showing the wire fixture 1 of FIG. 1, FIG. 3 is a left side view showing the wire fixture 1 of FIG. 2, FIG. 4 is a right side view showing the wire fixture 1 of FIG. 2, FIG. 5 is a plan view showing the wire fixture 1 of FIG. 2, FIG. 6 is a bottom view showing the wire fixture 1 of FIG. 2, and FIG. 7 is a perspective view showing the wire fixture 1 of FIG. 2. The rear view of the wire fixture 1 is the same as the front view. The thin lines shown in FIGS. 2 to 4 and FIG. 7 are for representing the three-dimensional shape of the wire fixture 1.

[0015] The wire fixing structure shown in FIG. 1 includes a wire fixture 1 and a wire 3 fixed to the insulator 2 by the wire fixture 1.

[0016] The insulator 2 may be disposed on a structure such as a utility pole. The insulator 2 may have a main body 20, a winding cylinder portion 21 extending from one end of the main body 20, and a head portion 22 connected to the main body 20 via the winding cylinder portion 21. The winding cylinder portion 21 is a portion around which the wire 3 is wound, and may have a diameter smaller than that of the main body 20 and the head portion 22. In FIG. 1, the winding cylinder portion 21 and the head portion 22 are shown as being located above the main body 20, but the orientation of the insulator 2 may be arbitrarily changed, for example, the winding cylinder portion 21 and the head portion 22 may be located on the side of the main body 20.

[0017] The electric wire 3 has a wire winding portion 30, a first extending portion 31, and a second extending portion 32. The wire winding portion 30 is a portion where the middle portion of the electric wire 3 is bent into a C shape or a U shape. The wire winding portion 30 is wound around the winding cylinder portion 21 of the insulator 2. The first extending portion 31 extends from one end of the wire winding portion 30, and the second extending portion 32 extends from the other end of the wire winding portion 30. The first extending portion 31 and the second extending portion 32 are continuous through the wire winding portion 30.

[0018] The wire fixture 1 is a member for fixing the electric wire 3 to the insulator 2. The wire fixture 1 may be formed by bending a linear body 1a as a whole. The linear body 1a may be made of metal or resin. From the viewpoints of elasticity and weather resistance, a metal linear body 1a, more specifically a stainless-steel linear body 1a, may be used. When using a metal linear body 1a, a resin coating portion for coating at least a part of the linear body 1a may be provided. Although not shown in FIG. 1, for example, a cap-shaped coating portion may be provided at the tips of the first leg portion 12 and the second leg portion 13 described later.

[0019] The wire fixture 1 has a fixture winding portion 10, an intersection portion 11, and a first leg portion 12 and a second leg portion 13. The fixture winding portion 10 is a portion where the middle portion of the linear body 1a is formed in a ring shape. The intersection portion 11 is provided in the fixture winding portion 10 and is a portion where the linear body 1a intersects. The first leg portion 12 and the second leg portion 13 extend from the intersection portion 11 respectively and are portions formed such that the linear body 1a extends in a spiral shape.

[0020] The diameter of the fixture winding portion 10 may be approximately the same as the outer diameter of the winding cylinder portion 21. When looking at the first leg portion 12 and the second leg portion 13 along the extending direction of the first leg portion 12 and the second leg portion 13 as shown in FIG. 6, the inner diameters of the first leg portion 12 and the second leg portion 13 may be approximately the same as the outer diameter of the electric wire 3. The first leg portion 12 and the second leg portion 13 may extend while being separated from each other.

[0021] The wire fixing tool 1 of the present embodiment is configured as follows. That is, the fixing tool winding portion 10 is wound around the winding cylinder portion 21 of the insulator 2 together with the wire winding portion 30 of the wire 3. Further, the first leg portion 12 is wound around the first extension portion 31 of the wire 3 extending from one end of the wire winding portion 30, and the second leg portion 13 is wound around the second extension portion 32 of the wire 3 extending from the other end of the wire winding portion 30. Further, when the first extension portion 31 and the second extension portion 32 are displaced in a direction away from each other so as to expand the wire winding portion 30 of the wire 3, the crossing portion 11 acts so as to contract the fixing tool winding portion 10.

[0022] Further, the wire fixing structure of the present embodiment is configured as follows. That is, the fixing tool winding portion 10 of the wire fixing tool 1 and the wire winding portion 30 of the wire 3 are wound around the winding cylinder portion 21 of the insulator 2. Further, the first leg portion 12 of the wire fixing tool 1 is wound around the first extension portion 31 of the wire 3, and the second leg portion 13 of the wire fixing tool 1 is wound around the second extension portion 32 of the wire 3. Further, when the first extension portion 31 and the second extension portion 32 are displaced in a direction away from each other so as to expand the wire winding portion 30 of the wire 3, the crossing portion 11 acts so as to contract the fixing tool winding portion 10.

[0023] That is, in the wire fixing tool 1 and the wire fixing structure of the present embodiment, as shown by the arrow A in FIG. 1, when the first extension portion 31 and the second extension portion 32 are displaced so as to increase the radius of curvature of the wire winding portion 30, the displacement of the first extension portion 31 and the second extension portion 32 is reversed by the crossing portion 11 and then acts on the wire winding portion 30 to narrow the radius of curvature of the wire winding portion 30. Thereby, the necessity of bringing the first extension portion 31 and the second extension portion 32 of the wire 3 into close contact or winding the first leg portion 12 and the second leg portion 13 of the wire fixing tool 1 around each other can be reduced. Thereby, it is possible to suppress the accumulation of rainwater, and it is possible to reduce the risk of tracking caused by dirt accumulated due to an insufficient rain washing effect. That is, with the configuration of the present embodiment, a sufficient rain washing effect can be ensured, and the accumulation of dirt can be suppressed.

[0024] Due to the relative displacement between the first leg portion 12 and the second leg portion 13 and the first extension portion 31 and the second extension portion 32, by arranging the first extension portion 31 and the second extension portion 32 inside the helix described by the first leg portion 12 and the second leg portion 13, the first leg portion 12 and the second leg portion 13 of the wire fixture 1 can be wound around the first extension portion 31 and the second extension portion 32 of the electric wire 3. Incidentally, for example, when an external force such as wind is received, the first extension portion 31 and the second extension portion 32 may be displaced so as to expand the wire winding portion 30 of the electric wire 3. At the intersection portion 11, when looking at the intersection portion 11 along the thickness direction TD of the wire fixture 1, the linear body 1a is intersected. As will be described later, at the intersection portion 11, the linear bodies 1a may extend while being separated from each other. In this case, at the intersection portion 11, the linear bodies 1a may have a twisted relationship. The thickness direction TD of the wire fixture 1 may be synonymous with the opening formed inside the fixture winding portion 10 or the axial direction of the winding cylinder portion 21 of the insulator 2.

[0025] As particularly shown in FIG. 2, the intersection of the linear bodies 1a at the intersection portion 11 may be once. The displacement of the first extension portion 31 and the second extension portion 32 that attempts to expand the wire winding portion 30 of the electric wire 3 can be surely reversed by the displacement that attempts to contract the fixture winding portion 10.

[0026] At the intersection portion 11, the linear body 1a (the first straight portion 101 described later) connected to the first leg portion 12 and the linear body 1a (the second straight portion 102 described later) connected to the second leg portion 13 may be separated from each other. As particularly shown in FIG. 6, at the intersection portion 11, the linear bodies 1a may extend while being separated from each other in the thickness direction TD of the wire fixture 1. By separating the linear bodies 1a, the mutual interference of the linear bodies 1a is suppressed, and the displacement of the first extension portion 31 and the second extension portion 32 that attempts to expand the wire winding portion 30 of the electric wire 3 can be surely reversed by the displacement that attempts to contract the fixture winding portion 10. In addition, it is possible to suppress rainwater from accumulating between the linear bodies 1a, and it is possible to reduce the risk of tracking caused by dirt accumulated due to insufficient rainwashing effect.

[0027] The fixture winding portion 10 has an arc portion 100, a first straight portion 101 extending from one end of the arc portion 100, and a second straight portion 102 extending from the other end of the arc portion 100, and the first straight portion 101 and the second straight portion 102 may intersect at the intersection portion 11. In the wire fixture 1 of the present embodiment, the first straight portion 101 corresponds to the linear body 1a connected to the first leg portion 12, the second straight portion 102 corresponds to the linear body 1a connected to the second leg portion 13, and the first straight portion 101 and the second straight portion 102 may be spaced apart from each other. The radius of curvature of the arc portion 100 may be equal to or greater than the radius of the winding barrel portion 21 of the insulator 2 and equal to or less than the radius of the head portion 22. The extending lengths EL of the first straight portion 101 and the second straight portion 102 can be adjusted so that the first extending portion 31 and the second extending portion 32 of the wire 3 can be separated by a predetermined distance. The separation distance between the first extending portion 31 and the second extending portion 32 of the wire 3 may be equal to or less than the diameter of the fixture winding portion 10.

[0028] When the first leg portion 12 and the second leg portion 13 are viewed along the thickness direction TD of the wire fixture 1, it is preferable that the angle at which the axes AL1 and AL2 of the first leg portion 12 and the second leg portion 13 intersect is 45° or less. The axes AL1 and AL2 of the first leg portion 12 and the second leg portion 13 are the central axes of the spirals drawn by the first leg portion 12 and the second leg portion 13, and may be understood as the directions in which the first extending portion 31 and the second extending portion 32 of the wire 3 extend at the portions wound around the first leg portion 12 and the second leg portion 13. When the angle at which the axes AL1 and AL2 intersect is 45° or less, the directions of the first extending portion 31 and the second extending portion 32 of the wire 3 do not need to be changed significantly, and the wire 3 introduced into the insulator 2 can be returned approximately in the same direction. From the viewpoint of returning the wire 3 introduced into the insulator 2 in the same direction, the angle at which the axes AL1 and AL2 intersect is more preferably 30° or less, and even more preferably 20° or less. The angle at which the axes AL1 and AL2 intersect may be 10° or less. However, for example, the angle at which the axes AL1 and AL2 intersect may exceed 45°, such as when the first leg portion 12 and the second leg portion 13 extend so as to be separated from each other as they move away from the intersection portion 11.

[0029] The wire fixture 1 may have the linear body 1a bent and formed at the fixing site for fixing the wire 3 to the insulator 2, or may be pre-formed into a predetermined shape so as to include a fixture winding portion 10, an intersection portion 11, a first leg portion 12, and a second leg portion 13. That is, the wire fixture 1 may be pre-formed into a predetermined shape and shipped from a place away from the fixing site such as a factory or the like.

[0030] The wire fixture 1 may be adapted to be used within the range of elastic deformation without accompanying plastic deformation. In other words, the wire fixture 1 may have a strength or elasticity such that it is not easily plastically deformed by hand. For example, when using a linear body 1a made of SUS304 or SUS316 which is a kind of stainless steel and the wire diameter of the linear body 1a is about 4 mm, it can be understood that the wire fixture 1 is adapted to be used within the range of elastic deformation without accompanying plastic deformation. The strength (tensile strength) of the linear body 1a is 1200 N / mm 2 to 1800 N / mm 2 or less. When the strength of the linear body 1a is 1200 N / mm 2 or more, it is possible to more reliably prevent the wire fixture 1 and the wire 3 from falling off the insulator 2 due to insufficient rigidity. When the strength of the linear body 1a is 1800 N / mm 2 or less, it is possible to prevent the wire fixture 1 from becoming too hard, and an operator can more easily attach the wire fixture 1 and the wire 3 to the insulator 2.

[0031] As described above, the preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to such examples. It is obvious that those having ordinary knowledge in the technical field to which the present invention pertains can conceive of various modification examples or correction examples within the scope of the technical idea described in the claims, and it is naturally understood that these also belong to the technical scope of the present invention.

[0032] The invention described in this specification can also be described as follows. [1] A wire fixture for fixing a wire to an insulator, A fixture winding portion in which the middle portion of the linear body is formed in a ring shape, An intersection portion provided in the fixture winding portion and where the linear bodies intersect, A first leg portion and a second leg portion that respectively extend from the intersection portion and are formed such that the linear bodies extend in a spiral shape and are provided with The fixture winding portion is wound around the winding barrel portion of the insulator together with the wire winding portion of the electric wire, The first leg portion is wound around a first extension portion extending from one end of the wire winding portion, The second leg portion is wound around a second extension portion extending from the other end of the wire winding portion, When the first extension portion and the second extension portion are displaced away from each other so as to expand the wire winding portion, the intersection portion acts to contract the fixture winding portion, and is configured as an electric wire fixture. [2] The intersection of the linear bodies at the intersection portion is once, The electric wire fixture according to claim 1. [3] At the intersection portion, the linear body connected to the first leg portion and the linear body connected to the second leg portion are separated from each other, The electric wire fixture according to claim 1 or 2. [4] When looking at the first leg portion and the second leg portion along the thickness direction of the electric wire fixture, the angle at which the axes of the first leg portion and the second leg portion intersect is 45° or less, The electric wire fixture according to any one of claims 1 to 3. [5] It is formed in a predetermined shape in advance so as to include the fixture winding portion, the intersection portion, and the first leg portion and the second leg portion, The electric wire fixture according to any one of claims 1 to 4. [6] The electric wire fixture according to any one of claims 1 to 5, and an electric wire fixed to an insulator by the electric wire fixture and is an electric wire fixing structure provided with The wire has a wire winding portion, a first extending portion extending from one end of the wire winding portion, and a second extending portion extending from the other end of the wire winding portion. The fixture winding portion and the wire winding portion are wound around the winding barrel portion of the insulator. The first leg portion is wound around the first extending portion. The second leg portion is wound around the second extending portion. When the first extending portion and the second extending portion are displaced in a direction away from each other so as to expand the wire winding portion, the crossing portion acts so as to contract the fixture winding portion. It is configured as described above. Wire fixing structure.

Explanation of reference numerals

[0033] 1: Wire fixture 1a: Linear body 10: Fixture winding portion 100: Arc portion 101: First straight portion 102: Second straight portion 11: Crossing portion 12: First leg portion 13: Second leg portion 2: Insulator 21: Winding barrel portion 3: Wire 30: Wire winding portion 31: First extending portion 32: Second extending portion

Claims

1. An electric wire fixing tool for fixing an electric wire to an insulator, comprising: A fixing tool winding portion in which an intermediate portion of a linear body is formed in an annular shape; A crossing portion provided in the fixing tool winding portion, where the linear bodies cross; A first leg portion and a second leg portion extending from the crossing portion respectively, and formed such that the linear bodies extend spirally; The fixing tool winding portion is wound around the winding barrel portion of the insulator together with the wire winding portion of the electric wire; The first leg portion is wound around a first extending portion extending from one end of the wire winding portion; The second leg portion is wound around a second extending portion extending from the other end of the wire winding portion; When the first extending portion and the second extending portion are displaced away from each other so as to expand the wire winding portion, the crossing portion acts to contract the fixing tool winding portion. It is configured as such. An electric wire fixing tool.

2. The crossing of the linear bodies at the crossing portion is once; At the crossing portion, the linear body connected to the first leg portion and the linear body connected to the second leg portion are spaced apart from each other; When the first leg portion and the second leg portion are viewed along the thickness direction of the electric wire fixing tool, the angle at which the axes of the first leg portion and the second leg portion intersect is 45° or less; The fixing tool winding portion, the crossing portion, and the first leg portion and the second leg portion are formed in a predetermined shape in advance. The electric wire fixing tool according to Claim 1.

3. The crossing of the linear bodies at the crossing portion is once. The electric wire fixing tool according to Claim 1.

4. At the crossing portion, the linear body connected to the first leg portion and the linear body connected to the second leg portion are spaced apart from each other. The electric wire fixing tool according to Claim 1.

5. When the first leg portion and the second leg portion are viewed along the thickness direction of the electric wire fixing tool, the angle at which the axes of the first leg portion and the second leg portion intersect is 45° or less. The electric wire fixing tool according to Claim 1.

6. The fixing tool winding portion, the crossing portion, and the first leg portion and the second leg portion are formed in a predetermined shape in advance. The electric wire fixing tool according to Claim 1.

7. An electric wire fixing structure comprising the electric wire fixing tool according to any one of Claims 1 to 6, and An electric wire fixed to an insulator by the electric wire fixing tool. The electric wire has a wire winding portion, a first extending portion extending from one end of the wire winding portion, and a second extending portion extending from the other end of the wire winding portion; The fixing tool winding portion and the wire winding portion are wound around the winding barrel portion of the insulator. The fixing tool winding portion and the wire winding portion are wound around the winding barrel portion of the insulator. ​ The first leg portion is wound around the first extending portion, The second leg portion is wound around the second extending portion, The crossing portion acts so as to contract the fixture winding portion when the first extending portion and the second extending portion are displaced in a direction away from each other so as to expand the wire winding portion, and is configured as such, a wire fixing structure.

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