Cap for post

Abstract

To provide a cap for a support capable of freely determining a mounting position of a linear object.SOLUTION: A cap 1 for a support includes a first coil spring part 2, a second coil spring part 3, a third coil spring part 4, and a fourth coil spring part 5. The first coil spring part 2 has a first coil wire 2A wound in a substantially circular shape with substantially the same radius, the second coil spring part has a second coil wire 3A extending from one end of the first coil wire 2A, the third coil spring part 4 has a third coil wire 4A extending from the other end of the first coil wire 2A, and the fourth coil spring part 5 has a fourth coil wire 5A extending from the third coil wire 4A. The third coil wire 4A is wound concentrically with the first coil spring part 2 in a winding range larger than the winding range of the first coil spring part 2, and a wire-shaped object is inserted into a wire-shaped object mounting space 6 formed around the first coil spring part 2, so that the wire-shaped object can be mounted at various positions of the third coil spring part 4.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a post cap, and more particularly to a post cap used for, for example, a fruit tree trellis post. [Background technology]

[0002] When cultivating vine-type fruit trees such as grapes, it is common to create a trellis by setting up multiple supports at equal intervals in the ground and stretching wires called "trace lines" between the supports.

[0003] Figure 5 is a schematic diagram showing part of a typical fruit tree trellis. As shown in Figure 5, in a typical fruit tree trellis 50, a certain area is surrounded on all sides by multiple supports 51 set up at equal intervals, and shelf lines 52 are stretched between the supports 51, and shelf lines 52 are stretched throughout this area. The ends of the shelf wires 52 are attached to anchors 55 driven into the ground. Therefore, the posts 51 are set up at an angle towards the anchors 55.

[0004] Vine fruit trees such as grapes grow along this trellis line 52, and because the trellis line 52 is located slightly higher than eye level, it is easy to see the state of the fruit trees' growth and harvesting can be done without having to bend or crouch, so this type of trellis cultivation is widely used as a method of cultivating vine fruit trees such as grapes.

[0005] As the fruit trees grow, "places with high loads" and "places with low loads" appear, and a difference in height occurs in the height of the shelf line 52 on the fruit tree trellis 50. That is, the height of the shelf line 52 is low where the load is heavy, and the height of the shelf line 52 is high where the load is relatively light. If such a difference in height is left as it is, loads will be concentrated on some of the supports 51 via the shelf wires 52, causing those supports 51 to tilt, which in turn will pull on other shelf wires 52, which in turn will cause other supports 51 to tilt via the pulled shelf wires 52, and ultimately there is a risk that the fruit tree trellis 50 will collapse.

[0006] To eliminate this difference in height, several supports called "hanging posts" are erected inside the fruit tree trellis 50, and wires called "hanging lines" attached to the hanging posts 53 are used to pull up the shelf lines 52 and supports 51 in areas where the load is heavy. At this time, a "hanging tool" is used to attach the suspension wire 54 to the suspension pole 53, and various types of hanging tools have been proposed in the past.

[0007] For example, Patent Document 1 describes a sling device shown in FIG. The suspension device 100 described in Patent Document 1 comprises a metal or synthetic resin fitting member 103 that is detachably attached to the upper end of a support 101, four radial rods 104 provided on the fitting member 103, and rings 105 connected to the tips of the radial rods 104. Here, an insertion hole 106 is formed surrounded by the fitting member 103, the radial rods 104, and the ring 105, and a hanging string such as a rope can be inserted into the insertion hole 106 to attach the hanging string to the ring 105. [Prior art documents] [Patent documents]

[0008] [Patent Document 1] Japanese Patent Application Laid-Open No. 2001-37354 Summary of the Invention [Problem to be solved by the invention]

[0009] The shelf wires at points where the load is heavy are pulled up with suspension wires, but if the load is too great, the suspension poles supporting the suspension wires will tilt toward the point where the load is heavy, which will pull the shelf wires at other points and raise their position. To prevent this, it is necessary to lift the shelf wire in various directions so that the suspension pole is balanced, and it is required that the attachment point of the suspension wire on the suspension tool can be freely determined.

[0010] However, in the case of a configuration of radial rods and rings, such as the suspension device described in Patent Document 1, it is difficult to attach suspension wires to the connection points between the radial rods and rings, which limits the flexibility of the suspension wire attachment points. Furthermore, if a suspension wire is attached to the connection point between the radial rod and the ring, the attachment must first be released if the attachment point is to be changed.Furthermore, the range in which the attachment point can be changed by sliding it on the ring without releasing the attachment is limited to between "one connection point with the radial rod" and "another connection point with the radial rod," which also limits the flexibility of the suspension wire attachment point.

[0011] Furthermore, the sling described in Patent Document 1 is made of metal or synthetic resin, but when the sling described in Patent Document 1 is made of metal, there is a problem in that when the sling described in Patent Document 1 is attached to the top end of a support pole, the center of gravity shifts upward, making the support pole more likely to tip over. On the other hand, when the sling is made of synthetic resin, there are concerns about its strength and durability. Furthermore, when using metal, welding is required to join the fitting member, radial rod, and ring, which requires a complicated process. Also, while synthetic resin can be processed into a single piece, there is a problem that it does not have sufficient strength.

[0012] The present invention has been devised in view of the above points, and an object of the present invention is to provide a pole cap that allows the attachment point of a linear object to be freely determined. [Means for solving the problem]

[0013] In order to achieve the above object, the support cap of the present invention comprises: a first coil spring portion having a first coil wire wound in a substantially circular shape with substantially the same diameter; a second coil spring portion having a second coil wire extending from one end of the first coil wire of the first coil spring portion, the second coil wire being wound concentrically with the first coil spring portion within a winding range smaller than the winding range of the first coil spring portion; and a third coil spring portion having a third coil wire extending from the other end of the first coil wire of the first coil spring portion, the third coil wire being wound concentrically with the first coil spring portion within a winding range larger than the winding range of the first coil spring portion.

[0014] Here, the first coil spring portion has a first coil wire wound in a substantially circular shape with a substantially uniform diameter, and a part of the support pillar can be inserted into the first coil spring portion. The second coil spring portion has a second coil wire extending from one end of the first coil wire of the first coil spring portion, and the second coil wire is wound concentrically with the first coil spring portion within a winding range smaller than the winding range of the first coil spring portion. This allows the second coil spring portion to abut against the end of the support inserted inside the first coil spring portion, thereby creating a state in which the second coil spring portion is hooked onto the end, and therefore the support cap of the present invention can be attached to the end of the support.

[0015] The first coil spring section also has a third coil wire extending from the other end of the first coil wire of the first coil spring section, and the third coil wire is wound concentrically with the first coil spring section over a winding range larger than the winding range of the first coil spring section.The third coil spring section forms a space around the first coil spring section based on the difference between the winding radius of the first coil spring section and the winding radius of the third coil spring section, so that a linear object such as a suspension wire can be inserted into this space and the linear object can be attached to various positions around the first coil spring section. Furthermore, since the entire support cap of the present invention is made up of a coil spring, the coil wires can be spaced apart as appropriate to reduce the number of turns and make the entire cap lighter, and since the coil wires are made of metal, a certain level of strength and durability can be maintained.

[0016] In the support column cap of the present invention, the third coil wire of the third coil spring portion may be wound in a circular shape.

[0017] In this case, the linear object or the like can be attached to the third coil spring portion at a position that is approximately the same distance from the winding center of the third coil spring portion, that is, at a position that has approximately the same winding radius.

[0018] Furthermore, the support cap of the present invention can be configured to have a fourth coil spring portion having a fourth coil wire extending from the third coil wire of the third coil spring portion, the fourth coil wire being wound multiple times concentrically with the first coil spring portion within a winding range that is approximately the same size as the winding range of the first coil spring portion, and the fourth coil wires being spaced apart from each other.

[0019] In this case, a part of the support pillar can be inserted into the interior of the fourth coil spring portion as well, and a part of the support pillar can be inserted into the interior of the first coil spring portion through the interior of the fourth coil spring portion. In this case, the support column cap of the present invention is less likely to come off the support column, and when the support column cap of the present invention is attached to the support column, the support column cap of the present invention is less likely to sway (become less likely to rattle) around the axis of the second coil spring portion that abuts against the end of the support column. Furthermore, since the fourth coil wires are spaced apart from each other, it becomes easy to sandwich a linear object such as a rope between the fourth coil wires and wind it around the fourth coil spring portion.

[0020] In addition, in the support cap of the present invention, the second coil wire of the second coil spring portion is wound multiple times, and the winding range of the second coil wire becomes smaller as it moves away from the first coil spring portion, so that the second coil wires can be configured to be in contact with each other.

[0021] In this case, the area of ​​the second coil spring portion that comes into contact with the end of the support pole can be increased, and the support pole cap of the present invention can be stably attached to the end of the support pole.

[0022] Furthermore, the support pole cap of the present invention can be attached to either the support pole 51 or the suspension pole 53. In particular, when used on a suspension pole, the coil spring is stretched due to the fact that it is subjected to mainly downward tensile force, and if it is unable to exert sufficient force, an auxiliary connecting body may be attached for reinforcement. The connecting auxiliary body can be formed in a flat plate shape and extend in the longitudinal direction, and can have a central portion having a through hole formed therein, a first arm portion bending and extending from one end of the central portion, a second arm portion bending and extending from the other end opposite the one end of the central portion to the same side as the first arm portion and facing the first arm portion, a first hook portion provided on the first arm portion on the opposite side of the central portion and removably hookable onto the third coil wire of the third coil spring portion, and a second hook portion provided on the second arm portion on the opposite side of the central portion and removably hookable onto the third coil wire of the third coil spring portion.

[0023] In this case, the auxiliary connection member can be easily attached to the third coil spring by hand using the spring action of the first coil spring. After attachment, the repulsive force of the spring action prevents it from falling off due to external forces. In addition, additional components such as bird-proof caps can be attached to the support cap of the present invention.

[0024] Furthermore, in the support column cap of the present invention, the first coil wire of the first coil spring portion may be wound a plurality of times, and the first coil wire may be configured to be spaced apart from each other.

[0025] In this case, the weight of the support cap of the present invention can be reduced. Also, since gaps are formed between the first coil wires, a linear object can be passed through the gaps and wound around the first coil spring portion. [Effects of the Invention]

[0026] The pole cap according to the present invention allows the attachment location of the linear object to be freely determined. [Brief explanation of the drawings]

[0027] [Figure 1] 1A is a schematic front view showing an example of a support column cap to which the present invention is applied, and FIG. 1B is a schematic plan view showing an example of a support column cap to which the present invention is applied. [Figure 2] FIG. 1 is a schematic front view showing an example of a support cap equipped with a connecting auxiliary body to which the present invention is applied, and FIG. 2 is a schematic plan view showing an example of a support cap equipped with a connecting auxiliary body to which the present invention is applied. [Figure 3] 1 is a schematic diagram showing a state in which a support cap equipped with a connecting auxiliary body according to the present invention is attached to a support. [Figure 4] 4 is a schematic diagram showing how a bird-proof cap is attached to the pole cap of the present invention in the state shown in FIG. 3.

[0023] FIG. [Figure 5] 1 is a schematic diagram showing a portion of a typical fruit tree trellis. [Figure 6] FIG. 1 is a schematic diagram showing a conventional sling attached to a support pole. DETAILED DESCRIPTION OF THE INVENTION

[0028] Hereinafter, embodiments of the present invention will be described with reference to the drawings to facilitate understanding of the present invention. FIG. 1(a) is a schematic front view showing an example of a support column cap to which the present invention is applied, and FIG. 1(b) is a schematic plan view showing an example of a support column cap to which the present invention is applied.

[0029] The support cap 1 of the present invention shown in FIGS. 1( a ) and 1 ( b ) includes a first coil spring portion 2 . Here, the first coil spring portion 2 has a first coil wire 2A wound in a substantially circular shape with a substantially uniform diameter. Furthermore, the inner diameter of the first coil spring portion 2 is large enough to allow the support pillar to be smoothly inserted into the inside of the first coil spring portion 2, and can of course be changed as appropriate according to the outer diameter of the support pillar.

[0030] In addition, the first coil wire 2A of the first coil spring portion 2 is wound multiple times, the first coil wires 2A are spaced apart from each other, and a gap 7 is formed between the first coil wires 2A, which communicates with the internal space of the first coil spring portion 2.

[0031] The support cap 1 of the present invention also includes a second coil spring portion 3. Here, the second coil spring portion 3 has a second coil wire 3A extending from one end of the first coil wire 2A of the first coil spring portion 2. The second coil wire 3A is wound concentrically with the first coil spring portion 2 over a winding range that is smaller than the winding range of the first coil spring portion 2. Furthermore, the inner diameter of the second coil spring portion 3 is large enough to abut against the end of the support pillar, and can of course be changed as appropriate according to the outer diameter of the support pillar.

[0032] The second coil wire 3A of the second coil spring portion 3 is wound multiple times, and the winding range of the second coil wire 3A becomes smaller as it moves away from the first coil spring portion 2. Additionally, the second coil wires 3A are in contact with each other. As a result, as shown in FIG. 1(a), the outer shape of the second coil spring portion 3 is inclined.

[0033] The support cap 1 of the present invention also includes a third coil spring portion 4. Here, the third coil spring portion 4 has a third coil wire 4A extending from the other end of the first coil wire 2A of the first coil spring portion 2. The third coil wire 4A is wound concentrically with the first coil spring portion 2 a plurality of times over a winding range larger than the winding range of the first coil spring portion 2. The third coil wire 4A of the third coil spring portion 4 is wound in a circular shape. Additionally, the third coil wires 4A are in contact with each other.

[0034] Furthermore, since the third coil wire 4A is wound concentrically with the first coil spring portion 2 over a winding range larger than the winding range of the first coil spring portion 2, as shown in Figures 1(a) and 1(b), a space 6 for attaching a linear object, which is a space based on the difference between the winding radius of the first coil spring portion 2 and the winding radius of the third coil spring portion 4, is formed around the first coil spring portion 2. Then, a linear object such as a suspension wire can be inserted into the linear object attachment space 6 and attached to various positions on the third coil spring portion 4 around the periphery of the first coil spring portion 2.

[0035] The support cap 1 of the present invention also includes a fourth coil spring portion 5 . Here, the fourth coil spring portion 5 has a fourth coil wire 5A extending from the third coil wire 4A of the third coil spring portion 4. The fourth coil wire 5A is wound concentrically with the first coil spring portion 2 a plurality of times in a winding range that is approximately the same size as the winding range of the first coil spring portion 2. Additionally, the fourth coil wires 5A are spaced apart from each other.

[0036] Therefore, similarly to the first coil spring portion 2, a gap 7 that communicates with the internal space of the fourth coil spring portion 5 is formed between the fourth coil wires 5A.

[0037] In the support cap 1 of the present invention in which the first coil wire 2A of the first coil spring portion 2 is wound a plurality of times, the first coil wires 2A may be in contact with each other. Furthermore, if the first coil wires 2A are spaced apart from each other, the weight of the support cap 1 of the present invention can be reduced, and since gaps 7 are formed between the first coil wires 2A, a linear object or the like can be passed through this gap 7 and attached to the first coil spring portion 2 around the entire circumference.

[0038] Furthermore, the winding shape of the third coil wire 4A of the third coil spring portion 4 is not particularly limited, and the third coil wire 4A can be wound in various shapes other than a ring, such as a "polygonal shape such as a triangular shape, a square shape, a pentagonal shape, or a hexagonal shape," or a "wave shape." Furthermore, if the third coil wire 4A of the third coil spring portion 4 is wound in a circular shape, a linear object or the like can be attached to a position on the third coil spring portion 4 that has approximately the same distance from the winding center of the third coil spring portion 4, i.e., the same winding radius.

[0039] In addition, the second coil wire 3A of the second coil spring portion 3 may be wound once instead of multiple times, and may be separated from the first coil wire 1A of the first coil spring portion 2. Furthermore, even when the second coil wire 3A is wound multiple times, the second coil wire 3A can be spaced apart from each other. Furthermore, if the second coil wire 3A of the second coil spring portion 3 is wound multiple times, and the winding range of the second coil wire 3A becomes smaller as it moves away from the first coil spring portion 2, and the second coil wires 3A are in contact with each other, the area of ​​the second coil spring portion 3 that contacts the end of the support can be increased, and the support cap 1 of the present invention can be stably attached to the end of the support.

[0040] Moreover, the support cap 1 of the present invention may not be provided with the fourth coil spring portion 5. Furthermore, if the support cap 1 of the present invention is equipped with a fourth coil spring portion 5, the support cap 1 of the present invention will be less likely to come off the support, and when the support cap 1 of the present invention is attached to the support, the support cap 1 of the present invention will be less likely to swing around the second coil spring portion 3 that abuts against the end of the support as its axis.

[0041] Furthermore, since the fourth coil wires 5A are spaced apart from each other, it becomes easy to sandwich a linear object such as a rope between the fourth coil wires 5A and wind it around the fourth coil spring portion. In the support column cap 1 of the present invention in which the fourth coil wire 5A of the fourth coil spring portion 5 is wound a plurality of times, the fourth coil wires 5A may be in contact with each other.

[0042] Furthermore, in a configuration in which the first coil wire 2A, the second coil wire 3A, the third coil wire 4A, and the fourth coil wire 5A are each wound multiple times, various combinations are of course possible, such as the first coil wires 2A, the second coil wires 3A, the third coil wires 4A, and the fourth coil wires 5A all being in contact with each other, or all being separated, or only the second coil wires 3A being in contact with each other and the other coil wires being separated from each other.

[0043] Furthermore, in order to connect additional components such as a general bird-proof cap to the pole cap 1 of the present invention, the pole cap 1 of the present invention can further include a connecting auxiliary body. Here, the bird-proof cap is attached to a support pole when the bird-proof net is hung on the support pole such as a suspension pole.

[0044] Figure 2(a) is a schematic front view showing an example of a support cap equipped with a connecting auxiliary body to which the present invention is applied, and Figure 2(b) is a schematic plan view showing an example of a support cap equipped with a connecting auxiliary body to which the present invention is applied.

[0045] As shown in FIGS. 2(a) and 2(b), the pole cap 1 of the present invention includes a connecting auxiliary body 10 made of metal. Here, the auxiliary connection body 10 has a central portion 11, which is formed in a flat plate shape and extends in the longitudinal direction, and which has two through holes 11A formed therein.

[0046] Further, the auxiliary connection body 10 has a first arm portion 12, which is bent and extends from one end of the central portion 11. In addition, the connecting auxiliary body 10 has a first hook portion 12A, which is provided on the opposite side of the first arm portion 12 from the central portion 11, and can be detachably hooked onto the third coil wire 4A of the third coil spring portion 4 by utilizing the spring properties of the first coil spring portion 2.

[0047] In addition, the connecting auxiliary body 10 has a second arm portion 13, which bends and extends from the other end opposite to the one end of the central portion 11 to the same side as the first arm portion 12, and faces the first arm portion 12. In addition, the connecting auxiliary body 10 has a second hook portion 13A, which is provided on the opposite side of the second arm portion 13 from the central portion 11, and can be detachably hooked onto the third coil wire 4A of the third coil spring portion 4 by utilizing the spring properties of the first coil spring portion 2.

[0048] FIG. 3 is a schematic diagram showing a state in which a support pole cap equipped with a connection auxiliary body according to the present invention is attached to a support pole.

[0049] When attaching the support column cap 1 of the present invention to the support column 20, first insert the upper end of the support column 20 into the inside of the fourth coil spring section 5, and then cover the support column 20 with the support column cap 1 of the present invention from the upper end to the lower end of the support column 20 so that the upper end of the support column 20 is inserted into the inside of the first coil spring section 2. Then, the second coil spring portion 3 abuts against the upper end of the support 20 inserted inside the first coil spring portion 2, and the support cap 1 of the present invention cannot be moved any further toward the lower end of the support 20, and the second coil spring portion 3 becomes hooked on the upper end of the support 20, so that the support cap 1 of the present invention can be attached to the support 20.

[0050] The support 20 is specifically, for example, a hanging pole used in a trellis or a pole surrounding a certain area in a trellis.

[0051] In the support cap 1 of the present invention attached to the support 20 in this manner, a space 6 for attaching a linear object is formed around the first coil spring portion 2, so that a linear object, specifically a suspension wire, can be inserted into the space 6 for attaching a linear object and the suspension wire can be attached to various positions on the third coil spring portion 4 around the first coil spring portion 2.

[0052] Furthermore, a gap 7 that communicates with the internal space of the first coil spring portion 2 is formed between the first coil wire 2A and the first coil wire 2A of the first coil spring portion 2, and a gap 7 that communicates with the internal space of the fourth coil spring portion 5 is also formed between the fourth coil wire 5A and the fourth coil wire 5A of the fourth coil spring portion 5. Therefore, by inserting a suspension wire into these gaps 7, it is possible to attach a suspension wire to the first coil spring portion 2 and the fourth coil spring portion 5 all around the circumference of the first coil spring portion 2 and the fourth coil spring portion 5.

[0053] In addition, a linear object thicker than a wire, such as a rope, can be sandwiched between the first coil wires 2A and 2A or between the fourth coil wires 5A and 5A, making it easy to wind the rope or the like around the first coil spring portion 2 or the fourth coil spring portion 5.

[0054] In addition, fruit trees grown on trellises can become food for wild birds, so measures must be taken to prevent the fruit trees from being eaten by wild birds. Therefore, the entire fruit tree trellis is covered with a net called "bird netting."

[0055] When the entire fruit tree trellis is covered with bird-proof netting, the height of the suspension poles is higher than the height of the surrounding supports, so the suspension poles and the suspension wires attached to the suspension poles support the bird-proof netting, and the suspension poles and the suspension wires allow an appropriate distance to be maintained between the fruit trees and the bird-proof netting. If there are no suspension poles or wires and bird netting is hung on trellises or posts, there is a risk that birds will get their beaks stuck in the mesh of the bird netting and eat the fruit trees through the netting. By supporting the bird netting with suspension poles and wires and providing an appropriate distance between the fruit trees and the bird netting, it is possible to prevent the fruit trees from being eaten through the bird netting.

[0056] When a bird net is hung on the pole 20 to which the pole cap 1 of the present invention is attached, the bird cap is attached to the pole cap 1 of the present invention. FIG. 4 is a schematic diagram showing how a bird-proof cap is attached to the pole cap of the present invention in the state shown in FIG.

[0057] The bird-proof cap 30 is a typical one, and as shown in FIG. 4, the bird-proof cap 30 comprises a dome-shaped main body 31 and two attachment parts 32 protruding from the bottom of the main body 31. Furthermore, a cross-shaped groove 31A is formed at the top of the main body 31.

[0058] The bird-proof cap 30 is attached to the support cap 1 of the present invention by the connecting auxiliary body 10 provided on the support cap 1 of the present invention. That is, as shown in Figure 4, the bird-proof cap 30 is brought close to the connecting auxiliary body 10, and the two mounting portions 32 of the bird-proof cap 30 are inserted into the two through holes 11A formed in the central portion 11, and the bird-proof cap 30 is attached to the support cap 1 of the present invention. Furthermore, although not shown, the bird-proof cap 30 can be fixed to the support cap 1 of the present invention by inserting a wire or the like into the groove portion 31A of the main body portion 31 of the bird-proof cap 30 and attaching both ends of the inserted wire to the third coil spring portion 4 of the support cap 1 of the present invention.

[0059] As described above, the support column cap 1 of the present invention includes the first coil spring portion 2, and therefore a part of the support column 20 can be inserted into the first coil spring portion 2. Furthermore, since the support cap 1 of the present invention is equipped with a second coil spring portion 3, the second coil spring portion 3 can be abutted against and hooked onto the end of the support 20 inserted inside the first coil spring portion 2, so that the support cap 1 of the present invention can be attached to the support 20. Furthermore, since the support cap 1 of the present invention is equipped with a third coil spring portion 4, a space 6 for attaching a linear object based on the difference between the winding radius of the first coil spring portion 2 and the winding radius of the third coil spring portion 4 is formed around the first coil spring portion 2, and a linear object such as a suspension wire can be inserted into the space 6 for attaching a linear object around the first coil spring portion 2 at various positions on the third coil spring portion 4.

[0060] Therefore, the pole cap 1 of the present invention allows the attachment location of the linear object to be freely determined.

[0061] Furthermore, gaps 7 are formed between the coil wires in the first coil spring portion 2 and the fourth coil spring portion 5, so that a linear object can be inserted into these gaps 7 and a suspension wire can be wound around the first coil spring portion 2 and the fourth coil spring portion 5 in the entire circumferential direction of the first coil spring portion 2 and the fourth coil spring portion 5.

[0062] Nut locking devices that have a wound coil wire and are attached to bolts already exist, but in order for such nut locking devices to abut against the nut, their attachment position on the bolt must be able to be changed depending on the position of the nut. If the nut locking device abuts against the end of the bolt and becomes caught on the end, it is not possible to change its attachment position on the bolt. From these points of view, it is clear that the pole cap 1 of the present invention is clearly different in technical concept from existing nut locking devices. [Explanation of symbols]

[0063] 1 Pole cap 2 First coil spring part 2A First Coil Wire 3 Second coil spring part 3A Second Coil Wire 4 Third coil spring section 4A Third Coil Wire 5 Fourth coil spring part 5A 4th coil strand 6 Space for attaching linear objects 7. Gap 10. Connecting auxiliary body 11 Central part 11A through hole 12 First arm 12A First hook part 13 Second arm 13A Second hook part 20 pillars 30 Bird-proof cap 31 Main body 31A Groove 32 Mounting part

Claims

1. a first coil spring portion having a first coil wire wound in a substantially circular shape with a substantially uniform diameter; a second coil spring portion having a second coil wire extending from one end of the first coil wire of the first coil spring portion, the second coil wire being wound concentrically with the first coil spring portion in a winding range smaller than a winding range of the first coil spring portion; a third coil spring portion having a third coil wire extending from the other end of the first coil wire of the first coil spring portion, the third coil wire being wound concentrically with the first coil spring portion in a winding range larger than the winding range of the first coil spring portion; Cap for support pole.

2. The third coil wire of the third coil spring portion is wound in a circular shape. The pole cap of claim 1.

3. a fourth coil spring portion having a fourth coil wire extending from the third coil wire of the third coil spring portion, the fourth coil wire being wound a plurality of times concentrically with the first coil spring portion in a winding range that is approximately the same size as the winding range of the first coil spring portion, and the fourth coil wires being spaced apart from each other; The pole cap of claim 1.

4. The second coil wire of the second coil spring portion is wound a plurality of times, and the winding range of the second coil wire becomes smaller as it moves away from the first coil spring portion, and the second coil wires are in contact with each other. The pole cap of claim 1.

5. The connecting auxiliary body is provided with: a central portion formed in a flat plate shape and extending in a longitudinal direction, and having a through hole; a first arm portion that is bent and extends from one end of the central portion; a second arm portion that is bent and extends from an end opposite to the one end of the central portion toward the same side as the first arm portion and faces the first arm portion; a first hook portion provided on the first arm portion opposite to the central portion and detachably hookable onto the third coil wire of the third coil spring portion; a second hook portion provided on the second arm portion opposite to the central portion and detachably hookable onto the third coil wire of the third coil spring portion; The pole cap of claim 1.

6. The first coil wire of the first coil spring portion is wound a plurality of times, and the first coil wire is spaced apart from each other. The pole cap of claim 1.

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