JP2020016009A - Attachment retainer for cable - Google Patents

Abstract

PROBLEM TO BE SOLVED: To surely mount and hold a climbing prevention device for climbing plants on a branch line of a utility pole.
A mounting and holding coil (10) for mounting and holding a climbing plant preventing device (50) on a branch line (1), wherein a spring wire is sequentially bent in a longitudinal direction at a predetermined bending angle at a predetermined length interval. The coil portion 15 has polygonal spiral sides that are continuous in the direction. The coil unit 15 is elastically deformed and wound so that a part of each spiral side is in close contact with the branch line 1, so that the crawling prevention device 50 is attached to the branch line 1 and held.
[Selection diagram] Fig. 1

Description

  BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cable attachment holder for securely attaching and holding a crawling prevention device for preventing climbing plants from creeping up along a branch line supporting a telephone pole.

  The applicant has jointly completed and applied for a crawling prevention device that prevents climbing plants from climbing along branch lines that support structures such as telephone poles that are erected on the ground (Patent Documents) 1). This device for preventing climbing of climbing plants is provided in a longitudinal direction of a cord (for example, specifically, a steel stranded wire rope or the like is used) that functions as a branch line stretched between the ground and a telephone pole. And a tubular covering attached to the middle part of the cord so as to cover the middle part of the cord. A slit is formed in a part around the axis of the sheath, and a middle part of the cord is inserted into the sheath through the slit.

  Further, as a device for preventing creeping of climbing plants with a simple structure, a crawl prevention device for utility pole branch lines has been proposed (Patent Document 2). This anti-roll winding device is an extruded product of a synthetic resin obtained by integrally molding a plate-shaped plate blade and a branch line mounting tube, and is used so that the branch line mounting tube portion is fitted along the branch line.

JP 2014-217301 A Japanese Utility Model Registration No. 3123795

  In the device for preventing creeping up disclosed in Patent Document 1, in order to facilitate the work of attaching the branch line to the cord and to securely support the branch line, a cut is formed over the entire axial direction of the cylindrical covering body having a predetermined diameter. Then, the cord was inserted into the slit, and two places in the middle of the cord were moved toward the cord from the support having the tongue pieces formed at the tips of the three projections. It is held in pressure contact with a pressure contact body capable of applying a tightening force. This makes it possible to easily and reliably attach and hold the crawling prevention device to the cord. However, since these supports and pressure-contact bodies are composed of a plurality of components incorporated in a part of the cover, there is a problem that the manufacturing cost is high.

  Further, since the wrap prevention device disclosed in Patent Literature 2 is an integrally molded product of synthetic resin, a branch line (cord strip) having a diameter such that it fits tightly into a branch line mounting cylinder molded to a predetermined inner diameter. Otherwise, the holding power cannot be obtained.

  Therefore, an object of the present invention is to solve the above-described problems of the conventional technology, and to easily and securely attach and hold a device for preventing creeping up to a branch line (corrugated body) having various wire diameters supporting a utility pole. It is an object of the present invention to provide a cord-like mounting holder.

  In order to achieve the above object, the present invention relates to an attachment holder for a cord that attaches and holds an object to be held to the cord, wherein the spring wire has a predetermined bending interval at a predetermined length and a longitudinal direction at a predetermined bending angle. And a coil part having a polygonal spiral side in the longitudinal direction that is sequentially bent in a longitudinal direction, and elastically deforms the coil part so that a part of the spiral side adheres to the cable body. It is characterized in that the object to be held is attached and held on the cable body by being deformed and wound.

  It is preferable that a hook formed by bending an end of the spring wire and locking the object to be held and the cord is formed at an end of the coil portion.

  It is preferable that the sides of the polygonal spiral shape have a substantially equilateral triangle shape when viewed from the end of the coil portion.

  It is preferable that the holding object is a device for preventing climbing of a climbing plant, and the cord is a branch line of a utility pole.

1 is a perspective view showing a state in which a crawling-up prevention device is fixedly held on a branch line (a cable body) of a utility pole according to an embodiment of a cable body attachment holding tool of the present invention. FIG. 4 is a partially enlarged view partially showing a state in which the crawling prevention device is connected to and fixedly held to a branch line (corrugated body) of a utility pole. BRIEF DESCRIPTION OF THE DRAWINGS Explanatory drawing which showed one structure of the attachment holder for cable bodies of this invention, the attachment form example to a cable body, and the general spiral attachment holder. FIG. 2 is a front view, a side view, a partial end view, and a plan view for explaining the shape and overall configuration of each part of the cord-holding attachment according to the present invention.

  DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of a cable attachment holder according to the present invention will be described with reference to the accompanying drawings.

  FIGS. 1 (a) and 1 (b) show a cable attachment holder 10 according to the present invention, which is used for attaching and holding a creep preventing device 50 to a cable 1 as a branch line of a telephone pole (not shown). 1 shows an embodiment of the present invention. The configuration of the crawling-up preventing device 50 supported by the cable body 1 via the cable body attachment holding tool 10 will be described with reference to FIGS.

  The crawling-up prevention device 50 includes a flag-shaped portion mainly composed of a sheet main body 51 made of a synthetic fiber mesh sheet and a cover sheet 55, the periphery of which is reinforced by a shape-retaining member (described later). The sheet main body 51 is sewn in a bag shape along a peripheral edge of a long side and a short side thereof so as to hold a shape retaining member 60 described later, so that an elongated flag shape is held. The sheet main body 51 is suspended and supported by the cord body 1 via the cord attachment holder 10 and a plurality of connecting hooks 20 described later. The long side of the cover sheet 55 is sewn along the upper end of the long side of the sheet body 51 to cover. The cover sheet 55 has a hook-and-loop fastener 56 attached along the long side and the short side thereof, and a hook-and-loop fastener 57 which can be bonded to the hook-and-loop fastener 56 is attached to the sheet body 51 side. Therefore, in the crawling-up prevention device 50 of the present embodiment, the cover sheet 55 is bent along the cord body 1 extending in the longitudinal direction and the peripheral portion is surface-bonded with the surface fasteners 56 and 57 to form a bag. The cover sheet 55 covers the cord 1 and the upper side portion of the crawling prevention device 50. This prevents the climbing plants from rolling up in the gap between the cord body 1 and the sheet body 51 (FIG. 1 (b)). As the hook-and-loop fasteners 56 and 57, various existing coupling bodies such as hooks and loops can be used.

  A mesh sheet is used for the sheet body 51 and the cover sheet 55. As the mesh sheet, an air-permeable woven sheet in which the surface of a polyester fiber woven fabric is coated with a vinyl chloride resin is used. After the sheet body 51 is cut into a predetermined developed shape as described above, the periphery of the sheet is sewn into a sack-like shape so as to hold the shape-retaining member along each side, and is reinforced to form a flag-like portion. (FIG. 2). In the present embodiment, the flag-shaped portion composed of the sheet body 51 is set to have a length L of about 1,000 to 1,500 mm and a width F of 150 to 300 mm. As a material of the sheet body 51 and the cover sheet 55, a polyester long-fiber nonwoven fabric having a predetermined thickness can be used in addition to a mesh sheet-like woven fabric.

  In order to maintain the shape of the flag portion in the installed state, a small-diameter pipe 60 as a shape-retaining member is attached around the seat body 51. Therefore, even when the wind or the like blows strongly, the rectangular shape does not collapse. In this embodiment, a vinyl chloride pipe having a pipe diameter of 8 mm is used as the shape retaining member. The small-diameter pipe 60 is composed of two pipes 60a and 60b having different lengths which are bent into a U-shape. It is joined at the joining portion 61 so as to match the height L. The shape retaining member may be a solid rod such as a glass fiber reinforced (FRP) rod other than the small diameter pipe. As a material, besides vinyl chloride, FRP, aluminum, stainless steel and the like can be used.

  Further, four connecting hooks 20 for connecting and holding the entire crawling-up prevention device 50 along the branch line 1 as a cord are attached at substantially equal intervals along the longitudinal direction of the seat body 51. (FIG. 1). The connecting hook 20 is made of an S-shaped stainless steel fitting, and as shown in FIG. 2A, one end of the connecting hook 20 is attached to a mounting portion 53 such as a slit formed in the seat body 51 by a fixing tool 54 such as a C-shaped ring. By locking the other end to the branch line 1, the connection between the entire crawling prevention device 50 and the branch line 1 is maintained. As the connecting hook 20, various materials such as a synthetic resin, a cloth, and a leather band can be used in addition to the stainless steel fitting. Further, as the mounting portion 53 and the fixing tool 54 for mounting the connecting hook 20 to the seat body 51, any suitable shape and fixing means other than the slit and the C-shaped ring can be adopted.

  As shown in FIG. 1A, the crawling-up prevention device 50 connected along the branch line 1 by the connection hook 20 has a plurality of straight lines bent as a whole to form a polygonal spiral cable as shown in FIG. It is easily attached to the branch line 1 by the body attachment holder 10, fixedly held, and finally used in a state covered with the cover sheet 55 (FIG. 1B).

  Hereinafter, the configuration of the cable attachment holder 10 for fixing and holding the crawling prevention device to the branch line 1 of the utility pole will be described with reference to FIGS. 3 and 4. FIG. 3 (a) shows a stranded wire attachment rope 10 (hereinafter referred to as an attachment holding coil) of a steel stranded wire rope often used for a branch line 1 of a utility pole (hereinafter referred to as a branch line 1). 10) is shown in an enlarged manner. FIG. 3B is an end view of a coil portion 15 (described later) of the mounting and holding coil 10. 4A and 4B show the bending shape of each part of the wire rod bent at each bending position ((0)-(8)) of the mounting and holding coil 10 as viewed from the end face. ing.

  As shown in FIG. 3 (a), the attachment holding coil 10 is a processed wire formed by bending a metal wire having a predetermined length and a wire diameter and having a spring property, and has a U-shaped hook 11a as a whole shape. And a coil portion 15 bent to form a polygonal spiral shape. The locking portion 11 is bent so as to form a U-shaped hook 11a having a width larger than the wire diameter of the branch wire 1 to be solid. The end of the illustrated attachment holding coil 10 is locked to the branch wire 1 via the U-shaped hook 11a and temporarily held. In addition, as shown in FIG. 2A, the attachment holding coil 10 is partially swaged by inserting a part of the locking portion 11 into an attachment hole 52 formed near the upper end side of the crawling prevention device 50. It is firmly attached to the crawling prevention device 50.

  The coil portion 15 has a continuous polygonal spiral shape formed by bending a spring wire so that each side has a substantially equilateral triangular shape when viewed from the end face at a predetermined length interval position in the length direction. . 3 (a), (b), FIG. 4 ((a) (front view), (b-1), (b-2) (side view), (c) of the bending shape of the coil portion 15 This will be described with reference to a partial end view ((d) (plan view)). The coil portion 15 is composed of portions between the reference numerals (0) and (8) shown in FIGS. 3A and 4D, and the sides of the line length B are continuous between (1) and (7). As shown in FIGS. 3 (b) and 4 (c), each side is continuously bent counterclockwise as viewed in an end view to form a substantially equilateral triangular shape. , And a polygonal spiral shape in the longitudinal direction. The bending angles α, β, γ, δ, and θ shown in FIG. 4D are angles formed by two sides when the adjacent sides are placed flat at each bending position (0)-(8). is there. In the present embodiment, each bending angle is set to, for example, approximately α = 60 °, β = 145 °, γ = 120 °, δ = 45 °, and θ = 160 °. These angles are appropriately set according to the degree of twist of the spiral with respect to the longitudinal direction. Also, as shown in FIGS. 3A and 3B, the wire lengths A, B, and C of the wire material can be set according to the wire diameter of the branch wire 1 inscribed in the coil portion 15 having a substantially equilateral triangle. preferable. In this embodiment, a stainless steel wire (JIS standard SUS304WPB) is used as a spring wire constituting the attachment holding coil 10. This stainless steel wire has a suitable spring property and excellent corrosion resistance, and is suitable as a material of the mounting and holding coil 10 of the present invention. Other various metal materials can be used as long as the wires have the same spring performance.

  FIGS. 3 (a) and 3 (b) show the fixing state of the mounting and holding coil 10 to the branch wire 1 when the mounting and holding coil 10 having the processing shape shown in each of FIGS. This will be described with reference to FIG. In order to fix the mounting and holding coil 10 to the supporting wire 1, first, the U-shaped hook 11a of one of the locking portions 11 of the mounting and holding coil 10 is locked to the supporting wire 1, and the end of the mounting and holding coil 10 is temporarily fixed. Hold. From this state, the portion denoted by reference numeral (1) is entangled with the branch wire 1 while elastically deforming the coil portion 15 so as to bend, and thereafter, the branch line is drawn while sequentially bending the portions denoted by reference numerals (2) to (7) clockwise. Wrap around 1. Finally, the locking portion 11 at the other end is locked to the branch wire 1. At this time, as shown in FIG. 3 (b), each part of reference numerals (1), (3), (6), reference signs (2), (5), reference signs (4), (7) is approximately It is located so as to form each vertex of a substantially equilateral triangle. Each side at that time forms a polygonal spiral that is bent at each vertex position and that is continuous in the longitudinal direction. Since the mounting and holding coil 10 is made of a spring wire, when the wire diameter of the branch wire 1 is substantially equal to or larger than the inscribed diameter of the triangle viewed from the end face, when wound around the branch wire 1, it is elastically deformed and attached to the branch wire 1. It is wound. Therefore, a spring effect is exhibited so as to restore the initial state to a triangular shape. Thereby, a part of the side of each section closely adheres to the branch wire 1, and the branch wire 1 is strongly tightened. With this tightening force, the mounting and holding coil 10 is firmly fixed and held to the branch wire 1. Therefore, for example, as shown in FIG. 1, the crawl-up prevention device 50 attached to the branch wire 1 by the attachment holding coil 10 is securely fixed and held to the branch wire 1. When the wire diameter of the branch wire 1 is larger than the inscribed diameter of the triangle, each side of the wire is largely bent within the elastic deformation range and adheres to the branch wire 1. At this time, the spring effect becomes larger, and a larger fixed holding effect can be obtained between the two.

  Here, the difference between the fastening and holding action of the branch wire 1 of the mounting and holding coil 10 having the polygonal spiral shape of the present invention and the holding action of the coil material 40 having the normal curved spiral shape will be described with reference to FIGS. (D) will be described as a reference example. The coil material 40 having a curved spiral shape shown in FIG. 3C has a smooth spiral shape having a constant coil inner diameter φc. In such a shape, if the wire diameter of the branch wire 1 is larger than the coil inner diameter, that is, if φw> φc, the coil inner diameter is expanded and the tightening effect can be exerted by being closely attached to the outer circumference of the branch wire 1. As shown in FIG. 3D, if the wire diameter of the branch wire 1 is equal to the inner diameter of the coil, or if the branch wire 1 is thinner than the inner diameter of the coil and there is a gap in any part, no tightening effect can be obtained.

  On the other hand, in the polygonal helical coil of the present invention, each side between the bending positions of the coil portion 15 is wound around the branch wire 1 while being elastically deformed, so that even the thin branch wire 1 has a plurality of windings. At the side of the location, the attachment holding coil 10 and a part of the outer peripheral surface of the branch wire 1 are in close contact with each other. Due to the spring effect of returning the mounting and holding coil 10 to the initial shape, a tightening force is generated at the contact portion, and the mounting and holding coil 10 can be fixed and held to the branch wire 1 by the tightening force.

  In the above description, an application example (FIG. 1) in which the crawling-up prevention device 50 already developed by the applicant is securely fixed and supported on the branch line 1 (branch wire 1) that supports the telephone pole has been described. The mounting holder 10 for mounting (the mounting holding coil 10) is an object to be mounted and held on a cord or the like such as a wire or a rope stretched in various places, for example, flags and notices similar to the form of the present embodiment. Needless to say, it can be used to easily attach and hold lightweight articles and the like. The same applies to the case where the number of the attachment holding coils 10 to be attached to the cable body and the like are appropriately set according to the weight of the target object.

  The present invention is not limited to the above-described embodiment, and various changes can be made within the scope shown in each claim. That is, embodiments obtained by combining technical means appropriately changed within the scope of the claims are also included in the technical scope of the present invention.

1 branch line (branch line)
10 Cord holder (holding coil)
11 Locking part 15 Coil part 20 Connecting hook 50 Crawling up prevention device

Claims (4)

An attachment holder for a cord that attaches and holds an object to be held to the cord,
A spring wire is sequentially bent in a longitudinal direction at a predetermined bending angle at a predetermined length interval, and has a coil portion in which polygonal helical sides are continuous in the longitudinal direction, and the coil portion is formed by each side of the helical shape. A part of the wire is elastically deformed and wound so as to be in close contact with the cord, and the object to be held is attached to and held by the cord.   2. The cable attachment according to claim 1, wherein an end of the spring wire is bent, and a hook that can be locked to the object to be held and the cable is formed at an end of the coil portion. 3. Holder.   2. The cable holder according to claim 1, wherein the polygonal spiral side has a substantially equilateral triangle shape when viewed from an end of the coil portion. 3.   2. The cable holder according to claim 1, wherein the object to be held is a device for preventing climbing of climbing plants, and the cable is a branch line of a utility pole. 3.

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