JP3135566U - Cable fittings - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cable mount that can be efficiently attached to a messenger wire, the mounted cable is unlikely to deviate, an excessive load is not applied to the messenger wire, and the manufacturing cost can be reduced.
SOLUTION: An S spiral portion and a Z spiral portion that are opposite to each other with one winding are formed alternately and continuously through a substantially straight intermediate portion, and the S spiral portion and the Z spiral portion The axial length of each spiral portion is 1.3 to 2.6 times its diameter with respect to the assumed cylindrical diameter, and the axial length of each intermediate portion is 4 times its diameter. When the length in the axial direction of each long portion is 2.0 to 4.6 times its diameter, and when viewed from the axial direction, The apex of the part protrudes outside the assumed cylinder at a height position corresponding to the center point or apex of the circle formed by the assumed cylinder, and at a position separated from the circle formed by the assumed cylinder in the horizontal direction with the same distance as its diameter. It shall be a cable mount.
[Selection] Figure 1

Description

  The present invention is attached to a messenger wire previously stretched in the installation section in a section such as between a power pole in which various cables such as a communication cable such as an optical fiber cable and a power cable are to be installed, and the cable is connected to the installation section In connection with the cable mount used to be installed along the messenger wire, the cable mount can be easily attached to the messenger wire, and the cable can be securely mounted on the cable mount. In particular, it is intended to reduce the load applied to the messenger wire and the manufacturing cost.

  When installing various cables such as optical fiber cables and communication cables and power cables in sections such as between utility poles, a cable mount called a cable hanger is generally used, and the cable mount is installed in advance. It is attached to the messenger wire stretched on the cable, and then the cable to be laid on the cable mount is laid, so that the cable to be laid on the erection section is routed along the messenger wire via the cable mount. It is erected.

  Until now, so-called ring hangers have been used as cable mounts, and the cables to be installed have been installed intermittently on messenger wires that are stretched in the installation section. When installing a communication cable, etc., a spiral body made of a high-strength wire called a spiral rod and coated with resin as necessary is used, and is previously stretched in the installation section inside the spiral formed by the spiral rod. The cable is installed by taking the cable to be installed with the messenger wire.

Since the spiral rod is a unidirectional spiral body, it must be rotated in one direction as many times as the number of turns of the spiral when it is attached to a messenger wire previously stretched in the construction section. Since it becomes difficult, it is usually used as a short length of about 1 m to 2 m in consideration of the ease.
Then, a spiral wire that is adjacent to the messenger wire in which the cable to be laid is stretched around the erection section is installed while winding the necessary number of spiral rods one by one according to the length of the erection section. The end portions of the cables are integrated by connecting each other, and a spiral rod is attached to the entire erection section to provide a cable to be erected.

  In addition, although the connection member and a jig | tool may be used for the connection of spiral rods, as described in patent document 1, it can be connected to the end part of a spiral rod so that spiral rods can be connected easily. In many cases, a male and female joint member is provided.

  However, such erection work is generally performed at a high place and involves many messenger wires, jigs, etc., and requires skill and great effort. Also, a joint member is attached to the end of the spiral rod. If provided, the cost increases and it is necessary to handle the joint member carefully so as not to damage the joint member.

  Therefore, a cable mount that can be easily attached to a messenger wire stretched in the installation section as described in Patent Document 2 is proposed even if it is a series according to the length of the installation section. ing.

  In this cable laying device, S spirals and Z spirals opposite to each other are continuously arranged in an axial direction through inverted U-shaped semicircular inverted parts, and are stretched in advance in a construction section. When attaching to the messenger wire, the messenger wire can be taken into the inside of each spiral sequentially while rotating forward and backward as much as the number of turns of each spiral, and the work of taking the spiral part into the messenger wire is easy and It is supposed to be quick.

  However, the cable laying device in which the S spiral and the Z helix opposite to each other are alternately and continuously arranged in the axial direction through the reverse U-shaped semicircular inversion portion is a messenger stretched in the mounting section. In order not to apply an excessive load to the messenger wire when it is attached to the wire, the spiral portion and the inversion portion should be extended in the axial direction so that the weight per unit length in the axial direction is appropriate. Since the unit length is reduced and used, the reversing part is opened in the axial direction, and the cable mounted on the reversing part can easily deviate due to an abnormal external force such as a strong wind or an earthquake. Concerning this, there has been an invention to attach a protruding member protruding upward at the apex of the reversing part. However, the attachment of such a member increases the cost and the handling of the cable mount. Also inevitably carefully so as not to break the said member, a new cable mounted device that does not require the installation of these members has been expected.

Japanese Patent No. 3182531 JP 2005-168284 A

  Therefore, the inventor of the present invention has a feature of the cable laying device in which the S spiral and the Z spiral opposite to each other are alternately and continuously arranged in the axial direction through the inverted U-shaped semicircular inversion portion. The reversing part is a straight part parallel to the axis or an intermediate part having a long part approximating a straight line, and the long part protrudes outward to constitute the above-mentioned one. The weight per unit length in the axial direction can be reduced sufficiently without being deformed in the axial direction and extended, and the cable mounted on the cable deviates due to abnormal external force due to wind or vibration. Prior to the present invention, the present inventors have invented a cable laying device that has a small number of spirals per unit length and can be more easily and quickly incorporated into a messenger wire. 040996 and It filed a patent application Te.

  It should be noted that the cable mounter previously invented by the inventor of the present invention, when observed from the axial direction, the apex of each long portion is outside the assumed cylinder assumed by each spiral portion, the assumed cylinder In principle, it is constructed such that it protrudes from the circle formed by the assumed cylinder at a height position corresponding to the center point or vertex of the circle formed by a distance that is the same distance as the diameter of the circle. Also, the length in the axial direction was not particularly specified.

  The inventor of the present invention has further studied the cable mounting device invented before the inventor of the present invention, and has found that it is necessary to find a practically appropriate value for the length in the axial direction that was not particularly specified. I also studied the reduction of manufacturing cost and made this the subject of the present invention.

  The inventor of the present invention has further studied the cable mount invented before the inventor of the present invention. Even in the cable mount having such a configuration, the cable mount can be deformed and extended in the axial direction. In the creation of this, it was found that the cost could be reduced, and the length in the axial direction, which was not particularly defined for the cable mount with such a configuration, was deformed in the axial direction and used for extension. I found an appropriate value and made this invention.

  In order to solve the above-mentioned problem, the cable mount according to the present invention is composed of a series of high-strength wire rods as described in claim 1, and is an S-spiral portion having a spiral shape in which the number of turns is one and both are opposite to each other. And the Z spiral portion are configured to be alternately and continuously arranged in the axial direction through an intermediate portion having a long axis approximating a straight line or a straight line parallel to the axis with the same axis. In the state where the helix is installed on the messenger wire, the axial length (α) of each helix portion is equal to the diameter of the orthogonal cross section of the assumed cylinder assumed by the S helix portion and the Z helix portion. The axial length of each intermediate part (β) is 4.0 to 6.6 times the diameter, and the length of each long part is 1.3 to 2.6 times the diameter. The axial length (γ) is 2.0 to 4.6 times its diameter, and the axis When observed from the direction, the apex of each elongated portion is located outside the assumed cylinder at a height corresponding to the center point or apex of the circle formed by the assumed cylinder, and horizontally from the circle formed by the assumed cylinder. It is assumed that it protrudes to a position separated by the same distance as the diameter.

  Further, as described in claim 2, the cable laying device described above is a total length of the length of each spiral portion and the length of each long portion with respect to the diameter of the assumed cylinder assumed by the spiral portion. And the intermediate portion has a long portion made of an arc-shaped curve having a large curvature radius approximating a straight line, as claimed in claim 3. As described, the S spiral portion and the Z spiral portion are symmetric in a plane orthogonal to the axis, and an intermediate portion adjacent via the S spiral portion or the Z spiral portion is a vertical plane passing through the axis of the spiral portion. It is desirable to be symmetric.

  In the cable laying device according to the present invention configured as described above, the S spiral portion and the Z spiral portion, both of which have one turn and are oppositely spiraled, have the same axis, and are straight or parallel to the axis. Even if it is configured as a series corresponding to the installation section through the intermediate section having a long section that approximates a straight line, it is stretched over the installation section. It is possible to attach the messenger wire while taking the messenger wire into the inside of each spiral portion while being reversed in the forward and reverse directions.

  When the cable mount according to the present invention is observed from the axial direction, the apex of each elongated portion is outside the assumed cylinder at a height position corresponding to the center point or apex of the circle formed by the assumed cylinder. Assuming that each spiral portion is assumed to be attached to a messenger wire stretched in the construction section by projecting to a position separated from the circle formed by the assumed cylinder in the horizontal direction with the same distance as its diameter. The messenger wire can be easily taken in from the gap between the cylinder and the apex of each long portion, and the attaching operation can be performed efficiently.

  In addition, the cable mount according to the present invention, when the cable installed in the installation section and vibrated by an external force such as strong wind or earthquake, is attached to the cable laying device, and the cable has each long part between the spiral parts. It is difficult to deviate beyond.

  Furthermore, the cable laying fixture according to the present invention has an excessive length with respect to the messenger wire to which it is attached by setting the length in the axial direction of each spiral portion, each intermediate portion, and each long portion to the above-mentioned lower limit or more. By reducing the weight per unit length to the extent that no weight is applied, and by defining the length in the axial direction of each spiral part, each intermediate part, and each long part as described above, When the cable to be installed is mounted on the cable mount, the leading tool generally used does not drop off.

  In addition, the cable mount according to the present invention is used by extending the length of each spiral portion, each intermediate portion, and each long portion in the axial direction as described above to reduce the manufacturing cost. Can be planned.

  That is, the present invention defines the cable mount as a suitable length for practical use of the length in the axial direction, which was not specified in the prior invention, and is used for that length. It is possible to reduce the manufacturing cost by using it after being deformed.

  The best mode for carrying out the cable mount according to the present invention will be described in detail below.

  As shown in the perspective view of FIG. 1, the cable laying fixture 10 according to the present invention is attached to a messenger wire W and used by laying a cable C, and has electrical insulation and corrosion resistance. A high tensile strength wire coated with a resin as necessary for bending is bent, and on the same axis X in the longitudinal direction, an S spiral portion 11 forming an S spiral of one rotation, The Z spiral portion 12 forming the rotating Z spiral is alternately and repeatedly formed through the intermediate portions 13a and 13b, and the start point and the end point of each spiral portion 11 and 12 are the same at the bottom. It is arranged on the straight line, and does not twist around the axis X, and has an appropriate length so as to be continuous according to the length of the installation section.

  As a result, the cable mount 10 is attached to the messenger wire W that has been stretched in advance with respect to the section where the cable C is to be laid, so that the messenger wire W is taken inside the spiral portions 11 and 12. Then, the cable C is mounted by sliding the leading tool connected to the cable C to be installed inside the spiral portions 11 and 12 in the direction of the axis X, or sequentially on the intermediate portions 13a and 13b. It is designed to be able to mount as if it were hooked.

  Hereinafter, the cable mount 10 according to the present invention will be described in detail based on three typical forms shown in FIGS. 2 to 10.

The first embodiment is as shown in FIGS. 2 to 4, wherein FIG. 2 is a front view showing a part of a cable mount according to the present invention, and FIG. 3 is a plan view thereof. FIG. 4 is a side view thereof, which is continuous to an appropriate length corresponding to the installation section in the left-right direction.
The second embodiment is as shown in FIGS. 5 to 7, and FIG. 5 is a front view showing a part of the cable mount according to the present invention, and FIG. 6 is a plan view thereof. These are continuous in an appropriate length corresponding to the installation section in the left-right direction, and FIG. 7 is a side view thereof.
The third embodiment is as shown in FIGS. 8 to 10, wherein FIG. 8 is a front view showing a part of a cable rig according to the present invention, and FIG. 9 is a plan view thereof, both of which are drawings. FIG. 10 is a side view thereof, which is continuous in an appropriate length corresponding to the installation section in the left-right direction.
In the drawings of each embodiment, common parts are denoted by the same reference numerals.

  The intermediate portions 13a and 13b of the cable laying fixture 10 according to the present invention have a straight straight line in the longitudinal direction in the middle thereof, or an arc-shaped long portion 14a and 14b that is approximated to the straight line (not shown) but has a small curvature and is gentle. The intermediate portions 13a and 13b adjacent to each other through the spiral portions 11 and 12 are connected to the start points or the end points of the spiral portions 11 and 12 on both sides thereof, as shown in FIG. 3, FIG. 6, or FIG. As shown in the top view of the configuration, it is located opposite to the longitudinal axis X through the center of each helix, and preferably is stable when attached to a messenger wire as shown in FIGS. As shown in the side view of each form of FIG. 10, the vertical plane passing through the axis X is symmetric.

  Moreover, as shown in the side view of each form of FIG. 4, FIG. 7, or FIG. 10, each intermediate part 13a, 13b is from the lowest starting point or end point of each helical part 11, 12 at its end part. In addition, the arcs have a smaller curvature than the circles assumed from the side surfaces of the spiral portions 11 and 12 and are continuous to the long portions 14a and 14b. The apexes of the long portions 14a and 14b are The circles are arranged on the outer side in the horizontal direction with a distance D equal to the length of the diameter of the circle from the circle assumed from the side surfaces of the spiral portions 11 and 12.

  It should be noted that the height position H of the vertices of the long portions 14a and 14b is a height position corresponding to the vertices of the circles in the first embodiment with respect to the circle assumed from the side surfaces of the spiral portions 11 and 12. Yes, in the second form, it is a height position corresponding to the middle between the vertex and the center point of the circle, and in the third form, it is a height position corresponding to the center point of the circle.

  In the cable laying fixture 10 according to the present invention, it is preferable to use the cable laying device 10 after extending the spiral portions 11 and 12 in an appropriate dimension in the direction of the axis X because it leads to a reduction in manufacturing cost. This can reduce the bulk during storage and transportation.

  And the cable mount 10 by this invention is assumed by each spiral part 11 and 12 in the state which should be used, as it shows in the side view of each form of FIG. 4, FIG. 7, or FIG. The length (α) in the direction of the axis X of each of the spiral portions 11 and 12 is 1.3 to 2.6 times the diameter of the diameter of the orthogonal cross section of the cylinder, and the axis X of each intermediate portion 13a and 13b. The length (β) in the direction is 4.0 to 6.6 times its diameter, and the length (γ) in the axis X direction of each of the long portions 14a and 14b is 2.0 to 4 times its diameter. By making it 6 times, the weight per unit length is made appropriate, the cable to be installed on this is designed to improve the efficiency of the installation, and the deviation of the installed cable is prevented. The total length of the spiral portions 11 (12) and the long portions 14a (14b) is It is preferred that a 5.3 times the diameter of the assumed cylindrical contemplated by the spiral portions 11 and 12.

  In each intermediate portion 13a, 13b, the long portions 14a, 14b are not straight lines parallel to the axis X, but are approximated to the straight lines, for example, arc-shaped curves having a large curvature radius. It has been confirmed that the same effect of preventing the cable from deviating as in the case of a straight line can be exhibited.

  However, when the spiral portions 11 and 12 are used in the direction of the axis X as described above, the extension work causes some distortion in the long portions 14a and 14b and approximates a straight line parallel to the axis X. For example, even if it becomes an arc-shaped curve with a large curvature radius, the cable mount 10 according to the present invention can be effective without any trouble. In other words, the extension work can be performed within a range that does not hinder the effect. Even if the long portions 14a and 14b are deformed, there is no problem, and it is not necessary to perform the operation with particular care, so that it can be performed efficiently.

  In addition, in the cable laying fixture 10 according to the present invention, the S spiral portion 11 and the Z spiral portion 12 are symmetrical on a plane orthogonal to the axis X, and are adjacent via the S spiral portion 11 or the Z spiral portion 12. It is desirable that the intermediate portions 13a and 13b are symmetric in a vertical plane passing through the axis X of the spiral portions 11 and 12.

  That is, by making the spiral portions 11 and 12 equal, when attached to the messenger wire, the spiral portions 11 and 12 are equally loaded with respect to the messenger wire. It is desirable that the intermediate portions 13a and 13b be equal to the left and right when observed so that they are stabilized around the axis X when attached to the messenger wire.

  As described below, the cable laying fixture 10 according to the present invention is configured based on the result of a test conducted by the inventors of the present invention to find a suitable form.

  A steel wire having an outer diameter of 3.2 mm, which is highly available and commonly used as a cable mount, is tested in the tests conducted by the inventors of the present invention in constructing the cable mount 10 described above. Is coated with high-density polyethylene and has a high tensile strength wire with an outer diameter of 5 mm. The S spiral portion 11 and the Z spiral portion 12 are symmetric in a plane orthogonal to the axis X, and the S spiral portion 11 or the Z spiral portion 12 The intermediate parts 13a and 13b adjacent to each other through the cable are symmetrical with respect to a vertical plane passing through the axis X of the spiral part 11 (12), and the various cable mounts having a basic configuration in which the diameters of the spiral parts 11 and 12 are 75 mm. Was used as a prototype.

  Further, the length (α) in the axis X direction of each of the spiral portions 11 and 12 is 200 mm, and each intermediate portion 13a so that the weight per unit length when using the above materials is preferably about 100 g / m. 13b has a length (β) in the axis X direction of 400 mm, and each of the long portions 14a and 14b has a length (γ) in the axis X direction of 200 mm.

  In addition, since each prototype has the length in the axis X direction as described above, a tip having a tip of 500 mm that is generally used to mount the cable on the cable mount is used. For each prototype, the cable could be installed smoothly without the leading tool dropping off between the spirals or between the spirals.

  And each prototype is attached to each of a plurality of messenger wires stretched in parallel to an outdoor 40m section assuming the space between utility poles, and an optical fiber cable is mounted on the messenger wires. In particular, the presence or absence of deviation of the cable was observed.

  Each prototype whose basic configuration is as described above has a height (H) from the lowest point of the long part and a horizontal separation (D) from the assumed circle by the spiral part as follows.

Prototype 1 H = 2.25mm D = 7.25mm
Prototype 2 H = 2.25mm D = 7.50mm
Prototype 3 H = 2.25mm D = 7.75mm
Prototype 4 H = 3.00mm D = 7.25mm
Prototype 5 H = 3.00 mm D = 7.50 mm
Prototype 6 H = 3.00mm D = 7.75mm
Prototype 7 H = 3.75 mm D = 7.25 mm
Prototype 8 H = 3.75 mm D = 7.50 mm
Prototype 9 H = 3.75mm D = 7.75mm
Prototype 10 H = 4.50 mm D = 7.25 mm
Prototype 11 H = 4.50 mm D = 7.50 mm
Prototype 12 H = 4.50 mm D = 7.75 mm
Prototype 13 H = 5.25mm D = 7.25mm
Prototype 14 H = 5.25mm D = 7.50mm
Prototype 15 H = 5.25mm D = 7.75mm
Prototype 16 H = 6.00mm D = 7.25mm
Prototype 17 H = 6.00mm D = 7.50mm
Prototype 18 H = 6.00mm D = 7.75mm
Prototype 19 H = 6.75mm D = 7.25mm
Prototype 20 H = 6.75mm D = 7.50mm
Prototype 21 H = 6.75mm D = 7.75mm
Prototype 22 H = 7.50 mm D = 7.25 mm
Prototype 23 H = 7.50 mm D = 7.50 mm
Prototype 24 H = 7.50mm D = 7.75mm
Prototype 25 H = 8.25mm D = 7.25mm
Prototype 26 H = 8.25mm D = 7.50mm
Prototype 27 H = 8.25mm D = 7.75mm
Prototype 28 H = 9.00mm D = 7.25mm
Prototype 29 H = 9.00mm D = 7.50mm
Prototype 30 H = 9.00mm D = 7.75mm

  In addition, the test was carried out by attaching the same messenger wire to the same messenger wire as a construction section with each portion obtained by dividing the same messenger wire into three equal parts for the same height (H) from the lowest point of each prototype.

The state of each prototype and the cable mounted on it was as follows after the June test period.
The prototype experienced a strong wind of 25 m / s and an earthquake of seismic intensity 3 during this test period.

In Prototype 1, cable deviation occurred.
In Prototype 2, cable deviation occurred.
In Prototype 3, cable deviation occurred.
In Prototype 4, cable deviation occurred.
In Prototype 5, cable deviation occurred.
In Prototype 6, cable deviation occurred.
In Prototype 7, cable deviation occurred.
Prototype 8 had no cable deviation.
Prototype 9 had no cable deviation.
In Prototype 10, cable deviation occurred.
Prototype 11 had no cable deviation.
Prototype 12 had no cable deviation.
In Prototype 13, cable deviation occurred.
Prototype 14 had no cable deviation.
Prototype 15 had no cable deviation.
Prototype 16 had a cable deviation.
In Prototype 17, there was no cable deviation.
Prototype 18 had no cable deviation.
In Prototype 19, cable deviation occurred.
Prototype 20 had no cable deviation.
Prototype 21 had no cable deviation.
Prototype 22 had a cable deviation.
Prototype 23 had no cable deviation.
Prototype 24 had no cable deviation.
The prototype 25 was twisted around the axis, but no cable deviation occurred.
The prototype 26 was twisted around the axis, but no cable deviation occurred.
In the prototype 27, twisting occurred around the axis, and the cable deviated.
The prototype 28 was twisted around the axis, but no cable deviation occurred.
In the prototype 29, twisting occurred around the axis, and cable deviation occurred.
The prototype 30 was twisted around the axis, causing cable deviation.

  By the above test, prototype 8, prototype 9, prototype 11, prototype 12, prototype 14, prototype 15, prototype 17, prototype 18, prototype 20, prototype 21, prototype 23, prototype 23, prototype 23 It was found that if the cable mount was constructed as in work 24, the cable mounted on it would not deviate.

  Here, the inventor of the present invention has to make the cable mount 10 the minimum width observed from the direction of the axis X so as not to interfere with other cables laid in parallel in the implementation. Since the height H from the lowest point of the long portion is equal and the cable mounted on the long portion does not deviate, the horizontal distance D from the assumed circle by the spiral portion of the long portion is short. Judged that this is desirable for implementation.

  That is, the prototypes that achieve the object of the present invention and are preferable in practice are the prototype 8, the prototype 11, the prototype 14, the prototype 17, the prototype 20, and the prototype 23, and the cable mount according to the present invention. 10 is the height corresponding to the center point or the apex of the circle formed by the assumed cylinder on the outside of the assumed cylinder when the longitudinal portions 14a and 14b are observed from the direction of the axis X as in the configuration described above. The inventors have obtained knowledge that it is preferable to form a configuration in which H is projected from a circle formed by the assumed cylinder in the horizontal direction at a position having the same distance D as its diameter.

  As described above, the cable mount 10 according to the present invention has the above-described configuration.

  The cable mount according to the present invention can be easily mounted without applying an excessive load to the messenger wire, and the cable mounted on the cable mount is difficult to deviate, and the manufacturing cost is also conventional. It can be further reduced.

A perspective view of a cable mount according to the present invention in use The partial front view of the 1st form of the cable mount by this invention Plan view of FIG. Side view of FIG. The partial front view of the 2nd form of the cable mount by this invention Plan view of FIG. Side view of FIG. The partial front view of the 3rd form of the cable mount by this invention Plan view of FIG. Side view of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Cable laying tool 11 S spiral part 12 Z spiral part 13a Intermediate part 13b Intermediate part 14a Long part 14b Long part X axis α Length of each spiral part in the axial direction β Length of each intermediate part in the axial direction γ Length in the axial direction of each long part H Height from the lowest point of the long part D Horizontal separation from the assumed circle W Messenger wire C Cable to be installed

Claims (4)

  A series of high-strength wire rods, both of which have a number of turns and are spirally opposite to each other, the S spiral portion and the Z spiral portion having the same axis line and approximating a straight line or a straight line parallel to the axis line It is constituted by the S spiral part and the Z spiral part in a state where it is constructed alternately and continuously in the axial direction via an intermediate part having a part, and this is constructed with respect to the messenger wire. The axial length (α) of each spiral portion is 1.3 to 2.6 times its diameter with respect to the diameter of the orthogonal cross section of the assumed cylinder, and the axial length (β ) Is 4.0 to 6.6 times its diameter, and the axial length (γ) of each long portion is 2.0 to 4.6 times its diameter, and When observed from the axial direction, the apex of each long part is outside the assumed cylinder, A height position corresponding to the center point to the vertex of the circle, the cable mounted device, characterized in that are projecting in a position spaced with the same distance as the diameter in the horizontal direction from the forming yen of the assumed cylinder.   The total length of the length of each spiral portion and the length of each long portion is about 5.3 times the diameter of the assumed cylindrical diameter assumed by the spiral portion, Item 4. The cable mount according to item 1.   3. The cable mount according to claim 1, wherein the intermediate portion has a long portion made of an arc-shaped curve having a large radius of curvature that approximates a straight line.   The S spiral portion and the Z spiral portion are symmetric in a plane orthogonal to the axis, and the intermediate portion adjacent via the S spiral portion or the Z spiral portion is symmetric in a vertical plane passing through the axis of the spiral portion. The cable mount according to any one of claims 1, 2, and 3, wherein:

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