JP2007104842A - Spiral supporter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a supporter which ensures a good workability in installing hanging wire and stable support of various cables. <P>SOLUTION: An inversion portion 7 arranged between a counterclockwise spiral portion 3 and a clockwise spiral portion 5 is formed of: a L-R inversion portion 7-a lying in the same direction on the same line which continues from the counterclockwise spiral portion 3 to the clockwise spiral portion 5: and a R-L inversion portion 7-b lying in the same direction on the same line which continues from the clockwise spiral portion 5 to the counterclockwise spiral portion 3 facing a different direction from the L-R inversion portion 7-a. Each of the L-R inversion 7-a and the R-L inversion 7-b is provided with an inversion portion extension stopper 11 which largely protrudes from the same circumference created by the counterclockwise spiral portion 3 and clockwise spiral portion 5, in the side surface viewed from an axial line X. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a spiral support used for bundling various kinds of wires, particularly optical fiber cables such as a light collecting drop cable, and other various cables.

The spiral support tool is used in a state where it is formed in a spiral shape and is laid on a suspension line spanned between the utility poles. The inside is tunnel-like when viewed from the axial direction, and various cables such as optical fibers are inserted and arranged.
Japanese Patent Publication No.52-4033

  The spiral support device is made in the shape of a spiral of a predetermined length, and in order to install it on the suspension line spanned between the utility poles, one end of the spiral support device is inserted into the suspension line and remains in a certain direction. It continues to rotate along the spiral, and it is installed on the suspension line by taking the suspension line inside. Similarly, after the next spiral support tool is erected on the suspension line by the above-described operation, the operation of integrally connecting the spiral support tools with the connection tool is repeated over the entire region between the utility poles, thereby forming a single continuous spiral support tool. Since it is used as a support, it takes a lot of time for the construction work. In particular, the construction work on the suspension line is very troublesome, which is not desirable in terms of workability.

  Accordingly, an object of the present invention is to provide a spiral support that is excellent in workability when suspending a suspension line and ensures stable support of various cables.

  In order to achieve the above object, the present invention has a left-handed spiral portion and a right-handed spiral portion that are alternately connected via a reversing portion, and the reversing portion is turned clockwise from a left-handed spiral portion. The LR reversing part of the same direction that is aligned on the same line following the part and the RL reversing part of the same direction that are different in direction from the LR reversing part and are aligned on the same line from the clockwise spiral to the counterclockwise spiral Reversing part extension stoppers that protrude from the same circumference formed by the left-handed spiral part and the right-handed spiral part on the side surfaces viewed from the axis line, respectively, on the LR reversing part and the RL reversing part It is characterized by providing.

  According to the spiral support tool of the present invention, when erected with respect to the suspension line spanned between the utility poles, for example, each LR inversion portion aligned in the same direction of the spiral support tool. After inserting in order and temporarily supporting the whole, the left-hand spiral portions can be taken into the suspension line by rotating counterclockwise counterclockwise sequentially from the end along the insertion direction.

  Subsequently, each RL inversion part outside the suspension line is inserted in order with respect to the suspension line, and if it is rotated clockwise along the spiral sequentially from the end along the insertion direction, each clockwise spiral part is It can be taken into the suspension line, and the spiral support can be quickly and easily installed on the suspension line.

  On the other hand, even if the helical support installed on the suspension line sways greatly due to the strong wind, the reversing section extension stopper becomes a high wall and the cables etc. stay inside, ensuring a stable and stable holding state for a long time can do.

  According to the present invention, first, the reversing portion extension stopper is provided along the tangential direction of each LR reversing portion and the RL reversing portion on the side surface viewed from the axis, and the reversing portion extension stopper is provided without impairing workability. Ensure that the length is large.

  Secondly, the reversing part extension stopper has a length of 30 mm or more from each LR reversing part and RL reversing part, and the reversing part extension stopper becomes a high wall even if it is greatly shaken by the influence of wind or the like. Etc. remain inside.

  Hereinafter, embodiments of the present invention will be described in detail with reference to FIGS. 1 to 5.

  FIG. 1 shows a schematic perspective view of a part of a spiral support according to the present invention.

  The spiral support 1 is formed in a shape in which the counterclockwise spiral portion 3 and the clockwise spiral portion 5 are alternately connected via the inversion portion 7, and a steel wire is used as the material.

  The counterclockwise spiral portion 3 has a shape wound around the axis X in the counterclockwise direction. The clockwise spiral portion 5 has a shape wound clockwise around the axis X, and each winding number is 1.6 to 1.7 in consideration of workability when the hanging wire 9 is taken into the inside. It has become.

  The reversing unit 7 has the same direction of the L-R reversing unit 7-a aligned on the same line following the left-handed spiral unit 3 to the right-handed spiral unit 5, and the LR reversing unit 7-a has a different direction and the right It is formed by the RL reversing part 7-b aligned on the same line that continues from the counterclockwise spiral part 5 to the counterclockwise spiral part 3.

  The LR inversion part 7-a and the RL inversion part 7-b protrude from the same circumference formed by the left-handed spiral part 3 and the right-handed spiral part 5 as shown in FIGS. A reversing portion extension stopper 11 is provided on each of the protruding reversing portions 7.

  The reversing portion extension stopper 11 is made of a synthetic resin material and fits along a circular arc surface of the reversing portion 7 and a rod-shaped stopper body 15 integrally extended from the fitting concave portion 13. The fitting concave portion 13 is integrally fixed and supported to the reversing portion 7 by fixing means such as ultrasonic welding.

  The stopper main body 15 of the reversing portion extension stopper 11 is disposed along the tangential direction of the reversing portion 7. As shown in FIG. 2, when the length L of the tip of the stopper body 15 is an imaginary line, the distance R1 from the center 0 is the smallest, and the locus toward the solid line is shown below. The position where the distance R from the center 0 is the largest is the tangential direction.

  In this case, the distance from the center 0 can be increased by turning further outward beyond the tangent line, but the cable or the like is easily exceeded. The tangential position is the best position where a function as a stopper can be obtained.

  Thereby, the tip of each stopper body 15 of the reversing portion extension stopper 11 fixed to the LR reversing portion 7-a and the RL reversing portion 7-b is lateral to the axis X as shown in FIG. When entangled, a state of projecting larger than the same circumference formed by the counterclockwise spiral portion 3 and the clockwise spiral portion 5 is obtained. The length L of the stopper main body 15 at this time is set to 30 mm or more in the result of the experiment. As a result of creating a high wall, the stopper main body 15 is not subject to unexpected behavior of the internal cables due to strong winds or the like. Good results were obtained without exceeding.

  In the spiral support 1 configured as described above, in order to construct the spiral support 1 with respect to the suspension line 9 spanned between the utility poles, as a representative example, for example, as shown in FIG. In the state along X, the LR reversing part 7-a in the same direction aligned on the same axis line is inserted in order to temporarily support the whole, and then about 2 turns in the insertion direction, Thus, the suspension line 9 can be taken into each counterclockwise spiral portion 3 by rotating counterclockwise.

  Subsequently, the RL reversing part 7-b outside the hanging line 9 is inserted in order clockwise with respect to the hanging line 9, and is rotated about two turns clockwise as it is. The suspension line 9 can be taken in 7-b. As a result, as shown in FIG. 4, the spiral support 1 can be quickly and easily installed on the suspension line 9. The RL reversing unit 7-b and the LR reversing unit 7-a may be used as a means for installing the suspension line 9 in order from the end.

  On the other hand, after the cable 17 or the like is inserted and arranged in the installed spiral support tool, for example, even if the spiral support tool 1 or the suspension line 9 or the cable 17 is shaken greatly due to the strong wind, the reverse portion extension stopper Since 11 becomes a high wall, the cable 17 or the like stays inside, and a reliable and stable cable holding state can be obtained over a long period of time.

The schematic perspective view which showed a part of spiral support tool concerning this invention. The outline side view which looked at the spiral support tool from the axis. The partial expansion attachment state figure which showed the attachment state of the inversion part extension stopper. The general | schematic perspective view of a part of the helical support tool of the state constructed by the hanging line. Explanatory drawing of the part which showed an example of the construction work state of the helical support tool with respect to suspension construction.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Spiral support tool 3 Left-hand spiral part 5 Right-hand spiral part 7 Inversion part 7-a LR inversion part 7-b RL inversion part 9 Hanging line 11 Inversion part extension stopper X Axis line

Claims (3)

  An LR reversal portion in the same direction aligned on the same line following the clockwise spiral portion from the counterclockwise spiral portion, having a counterclockwise spiral portion and a clockwise spiral portion alternately connected via the reversal portion And the LR inversion portion and the RL inversion portion of the same direction that are aligned on the same line following the clockwise spiral portion and the counterclockwise spiral portion. A spiral support, wherein the reverse portion is provided with a reverse portion extension stopper that protrudes greatly from the same circumference formed by the left-handed spiral portion and the right-handed spiral portion on the side surface viewed from the axis.   2. The spiral support according to claim 1, wherein the reversing portion extension stopper is provided along a tangential direction of each of the LR reversing portions and the RL reversing portions on a side surface viewed from the axis.   The helical support according to claim 1 or 2, wherein the reverse portion extension stopper has a length from each LR reverse portion and the RL reverse portion of 30 mm or more.

Images