Bird damage prevention device

Abstract

To provide a bird damage prevention device that can improve the workability of attaching to a cable.SOLUTION: A bird damage prevention device includes a bird damage prevention tool that is attached to a cable. The bird damage prevention tool includes a body, a split, a plurality of protrusions, at least one connecting leg, and at least one connecting base. The main body has a cylindrical shape through which the cable is inserted. The split is provided along the axial direction of the main body, and allows the main body to be freely expanded. The protrusion extends away from the outer peripheral surface of the body. The connecting leg extends from the body along the axial direction, and has a hook piece at the tip extending from the body. The connecting base is provided in the body and has a connecting hole through which a hook piece of another bird damage prevention device is inserted.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present disclosure relates to a bird damage prevention device including a bird damage prevention tool attached to a cable.

Background Art

[0002] In order to prevent birds from perching on cables such as electric wires, bird damage prevention tools attached to cables are known. Patent Document 1 discloses a bird damage prevention tool including a belt-like material with a spiral curl and a large number of rod-like bodies fixedly planted at intervals in the longitudinal direction of the belt-like material, which can be wound around and attached to a cable.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, since the above-described bird damage prevention tool is wound around and attached to a cable, the range where the bird damage prevention tool can be wound at one time from a predetermined position is limited. Therefore, when the range where the bird damage prevention tool needs to be wound around the cable is wide, the operator has to move to the winding position many times, and the length adjustment of the bird damage prevention tool is performed by cutting, so there is a problem that it takes a long time to attach the bird damage prevention tool to the cable.

[0005] One aspect of the present disclosure aims to provide a bird damage prevention device that can improve the workability of attaching to a cable.

Means for Solving the Problems

[0006] One aspect of the present disclosure is a bird damage prevention device equipped with a bird damage prevention device for use attached to a cable, the bird damage prevention device comprising a main body, a slit, a plurality of projections, at least one connecting leg, and at least one connecting base. The main body is cylindrical through which the cable is inserted. The slit is provided along the axial direction of the main body, allowing the main body to be expanded. The projections extend away from the outer circumferential surface of the main body. The connecting leg extends from the main body along the axial direction and has a hook at the tip extending from the main body. The connecting base is provided in the main body and has a connecting hole through which a hook of another bird damage prevention device is inserted.

[0007] In this configuration, the cylindrical main body, which can be expanded by a slit, is expanded, the cable is passed through the slit, and the bird deterrent is attached by covering the cable. Therefore, the bird deterrent can be easily attached to the cable by passing the cable through the slit. In addition, multiple bird deterrents can be connected or disconnected by inserting the hook piece of the connecting leg of one bird deterrent into the connecting hole of the connecting base of another bird deterrent, or by removing it from the connecting hole, so the length can be easily adjusted. Therefore, the ease of attachment to the cable can be improved.

[0008] In one aspect of the present disclosure, at least one connecting base may have a first connecting base and a second connecting base located on either side of the split. The centers of gravity of the first connecting base and the second connecting base may be located closer to the split than the axis in the direction of the line connecting the axis and the split. In such a configuration, the first connecting base and the second connecting base located on either side of the split The center of gravity is located closer to the slit than to the axis of the main body. Therefore, the bird deterrent is more stable when the slit is positioned downwards when the cable is inserted. Consequently, rotation of the bird deterrent attached to the cable around the axis of the main body is suppressed, which prevents the bird deterrent from detaching from the cable due to the cable slipping out of the slit.

[0009] In one aspect of this disclosure, the bird repellent may have a first protruding piece and a second protruding piece extending outward from both ends of the slit. The first and second protruding pieces may extend from both ends of the slit so that they are spaced far apart from each other. In this configuration, since two protruding pieces extend from both ends of the slit, the bird repellent is more likely to be stable when attached to a cable with the two protruding pieces positioned downwards. Therefore, it is possible to prevent the bird repellent from becoming detached from the cable due to the cable slipping out of the slit. In addition, since the first and second protruding pieces extend from both ends of the slit so that they are spaced far apart from each other, it is easier to pass the cable through the slit along the gap between the first and second protruding pieces.

[0010] In one aspect of this disclosure, the bird repellent may have a covering piece that covers the split. The covering piece is located inside the main body and has a length along the axial direction. In such a configuration, since the bird repellent has a covering piece inside the main body that covers the split, the split is covered by the covering piece when the bird repellent is attached to the cable. That is, when the cable is inserted through the main body, the covering piece is positioned between the cable and the split. This prevents the bird repellent from coming off the cable due to the cable coming loose.

[0011] One aspect of this disclosure is a bird damage prevention device, which is configured by connecting multiple bird damage prevention devices as described above. In such a configuration, since multiple bird damage prevention devices are connected in the bird damage prevention device, the length of the bird damage prevention device can be adjusted by the number of bird damage prevention devices connected.

[0012] One aspect of the present disclosure includes a bird damage prevention device that is attached to the bird damage prevention device for use in order to hold the bird damage prevention device in a state where it cannot be opened by the slit portion of the bird damage prevention device. The fall prevention device may have a fitting portion and a leg portion. The fitting portion has a shape that fits onto the outer circumferential surface of the main body portion. The leg portion extends from the fitting portion so as to cover the slit portion and sandwiches the slit portion from both sides. The leg portion may have a first wall portion and a second wall portion. The first wall portion extends from the fitting portion. The second wall portion extends by folding back from the extended tip of the first wall portion via a folded portion. The fall prevention device may be attached to the outer circumference of the bird damage prevention device with the first wall portion and the second wall portion sandwiching the slit portion from both sides and the fitting portion fitted onto the outer circumferential surface of the main body portion. In this configuration, when attached to the outer circumference of the bird repellent, the split portion is sandwiched between the first and second walls, and the main body is covered by the fitting portion. This allows the deformation that would cause the bird repellent to expand to be restricted by both the first and second walls and the fitting portion. Therefore, it has a high ability to hold the bird repellent in an unexpandable state.

[0013] One aspect of this disclosure may include a stopper that is inserted into the main body of the bird repellent device. The stopper may have an axial length and an insertion groove that extends axially into which a cable can be inserted. In such a configuration, the stopper is inserted into the main body with the cable inserted into the insertion groove. As a result, the stopper fills the gap between the cable inserted into the main body and the main body. Therefore, even if the bird repellent device attempts to move in the axial direction of the main body, such movement is suppressed by friction between the bird repellent device and the stopper, and between the stopper and the cable. Thus, the position on the cable of the bird repellent device, which is movable on the cable by having the cable inserted into the main body, can be fixed. [Brief explanation of the drawing]

[0014] [Figure 1] This is a perspective view showing a bird damage prevention device, equipped with bird damage prevention devices, fall prevention devices, and stoppers, attached to a cable. [Figure 2]This is a perspective view of the bird damage prevention device seen from the front side. [Figure 3] This is a perspective view of the bird damage prevention device seen from the back side. [Figure 4] This is a front view schematically showing the state in which a fall prevention device is attached to the outer periphery of the bird damage prevention device in a state where it is attached to a cable. [Figure 5] This is a view showing a state in which a plurality of bird damage prevention devices are connected. [Figure 6] This is a view showing a method of connecting the bird damage prevention devices. [Figure 7] This is a view showing a method of detaching the connected bird damage prevention devices. [Figure 8] This is a perspective view showing the fall prevention device. [Figure 9] This is a perspective view showing the stopper. [Figure 10] This is a view showing a state in which a plurality of stoppers before separation are connected. [Figure 11] This is a view schematically showing a state in which a stopper is inserted into the main body part of the bird damage prevention device in a state where it is attached to a cable. [Figure 12] This is a view schematically showing a state in which a stopper is inserted into the main body part of the bird damage prevention device in a state where a fall prevention device is attached to the outer periphery of the bird damage prevention device in a state where it is attached to a cable. [Figure 13] Figure 13A is a view showing a state of passing a cable through the split part of the first bird damage prevention device of a plurality of connected bird damage prevention devices. Figure 13B is a view showing a state of attaching a fall prevention device to the outer periphery of the first bird damage prevention device in a state where the cable is inserted. Figure 13C is a view showing the attachment of the second and subsequent bird damage prevention devices of a plurality of connected bird damage prevention devices to the cable. Figure 13D is a view showing a state of inserting a stopper into the main body part of the last bird damage prevention device of a plurality of connected bird damage prevention devices. Figure 13E is a view showing a state of attaching a fall prevention device to the outer periphery of the last bird damage prevention device of a plurality of connected bird damage prevention devices.

Embodiments for Carrying Out the Invention

[0015] Hereinafter, exemplary embodiments of the present disclosure will be described with reference to the drawings. [1. Configuration] The bird damage prevention device 100 shown in FIG. 1 is attached to the cable 200 and used to prevent birds from flying onto the cable 200. The cable 200 mentioned here is, for example, a communication line such as an optical drop cable extending from a utility pole to a house. Note that the bird damage prevention device 100 may be attached to other cables such as electric wires. The bird damage prevention device 100 includes a plurality of bird damage prevention tools 1, at least two fall prevention tools 2, and a stopper 3.

[0016] [1-1. Configuration of Bird Damage Prevention Tool] The bird damage prevention tool 1 shown in FIGS. 2 and 3 is a member attached to the cable 200 and used. The bird damage prevention tool 1 is formed of a resin, for example, a soft plastic resin. The bird damage prevention tool 1 includes a main body part 11, a slit part 12, two protruding pieces 13, two connecting leg parts 14, two connecting pedestals 15, seven protruding parts 16, and a covering piece 17.

[0017] The main body part 11 is a cylindrical part extending from the first end part 112 to the second end part 113 in which a hollow part for inserting the cable 200 is formed. The main body part 11 has an annular shape in a cross section perpendicular to the central axis A of the main body part 11. A part of the annular shape is cut off to form the slit part 12. Note that the shape of the cross section perpendicular to the central axis A of the main body part is not limited to a circular shape, and may be, for example, an elliptical shape or a polygonal shape.

[0018] The slit part 12 is provided along the central axis A direction. The slit part 12 is formed over the entire length direction of the main body part 11. The slit part 12 enables the main body part 11 to be expanded. Specifically, the main body part 11 is expanded by widening the distance between both ends of the slit part 12.

[0019] The two protruding pieces 13 are parts extending outward from both ends of the slit part 12, respectively. Specifically, the two protruding pieces 13 extend from both ends of the slit part 12 so that the distance between them becomes wider, and the extended tip parts are located apart from each other.

[0020] The connecting leg portion 14 is a part that extends from the outer circumferential surface 111 of the main body portion 11 along the direction of the central axis A. The connecting leg portion 14 is provided on the first end 112 side of the main body portion 11. The connecting leg portion 14 has a length along the direction of the central axis A and has a rectangular cross-sectional shape perpendicular to the central axis A. The connecting leg portion 14 has a hook piece 141 at the tip extending from the main body portion 11 that bends outward in the opposite direction of extension. Two connecting leg portions 14 are provided so as to be located on both sides of the split portion 12. The two connecting leg portions 14 are arranged parallel to each other. Note that the number of connecting leg portions is not limited to two; for example, there may be one or three or more connecting leg portions.

[0021] The connecting base 15 is a portion that extends away from the outer circumferential surface 111 of the main body 11. The connecting base 15 is provided on the second end 113 side of the main body 11, opposite to the first end 112. The connecting base 15 has a plate-like shape with a plane 151 that extends along a first virtual plane perpendicular to the central axis A. The connecting base 15 has a connecting hole 152 through which the hook piece 141 of the connecting leg 14 of the other bird-repellent device 1 is inserted. The connecting hole 152 is a through-hole that penetrates the plane 151 and has a square cross-section. Two connecting bases 15 are provided, one on each side of the split 12. Note that the number of connecting bases is not limited to two; for example, one or three or more connecting bases may be provided.

[0022] The centers of gravity of the two connecting bases 15 are located closer to the split portion 12 than to the central axis A, in the direction of the center line B shown in Figure 4, which connects the central axis A and the split portion 12. Specifically, as shown in Figure 4, the two connecting bases 15 are provided in a mirror-symmetrical manner with respect to a second virtual plane that passes through the center line B and extends in the direction of the central axis A. The two connecting bases 15 are on the split portion 12 side of the orthogonal line C that is perpendicular to the second virtual plane, and each extends in a direction away from the outer circumferential surface 111 of the main body 11 at an angle with respect to the orthogonal line C. This makes it easier for the bird damage prevention device 1 to be stable when the split portion 12 is positioned downwards when it is attached to the cable 200. Therefore, when the bird damage prevention device 1 is attached to the cable 200, rotation of the bird damage prevention device 1 around the central axis A of the main body 11 is suppressed.

[0023] The projection 16 is a portion that extends away from the outer circumferential surface 111 of the main body 11. The projection 16 has a needle-like shape. The projection 16 is provided on the second end 113 side of the main body 11. Multiple projections 16 are erected radially outward from the central axis A of the main body 11. In this embodiment, seven projections 16 are provided on the outer circumferential surface 111 of the main body 11 at predetermined intervals along the circumferential direction. Of the seven projections 16, two projections 16 extend outward from the two connecting bases 15. Note that the number of projections is not limited to seven; for example, there may be two to six projections, or eight or more projections.

[0024] The covering piece 17 is positioned inside the main body 11 and covers the split portion 12 from the inside. The covering piece 17 has a length along the direction of the central axis A. Specifically, the covering piece 17 extends from the first end 112 to the second end 113 of the main body 11. The covering piece may be configured to be arranged in multiples at intervals along the direction of the central axis A. The covering piece 17 has a plate-like shape that extends from one end of the split portion 12 toward the other end. The covering piece 17 extends from one end of the split portion 12 toward the central axis A and extends along the orthogonal line C via a bend, so that it is positioned at a predetermined distance from the split portion 12 in the direction of the center line B.

[0025] As shown in Figure 5, multiple bird repellent devices 1 can be connected together. As shown in Figure 6, the first end 112 of one bird repellent device 1 is placed opposite the second end 113 of another bird repellent device 1. Then, the two bird repellent devices 1 are connected by applying force in the direction of the central axis A so that the hook pieces 141 of the two connecting legs 14 of one bird repellent device 1 are inserted into the connecting holes 152 of the two connecting bases 15 of the other bird repellent device 1. Also, as shown in Figure 7, the two connected bird repellent devices 1 can be separated by applying force in the direction of the central axis A so that the hook pieces 141 of the two connecting legs 14 are removed from the connecting holes 152 of the two connecting bases 15, and the two bird repellent devices 1 can be removed.

[0026] [1-2. Components of the fall prevention device] The fall prevention device 2 shown in Figure 8 is a component that is attached to the bird damage prevention device 1 to hold it in a state where it cannot be opened by the slit portion 12 while it is attached to the cable 200.

[0027] In the bird damage prevention device 1, as described above, in which the cable 200 is inserted into the main body 11 through the slit 12, the bird damage prevention device 1 is prone to expanding when an opening force is applied to the slit 12. The fall prevention device 2 of this embodiment can suppress the expansion of the bird damage prevention device 1 even when an opening force is applied to the slit 12.

[0028] The fall prevention device 2 is molded from resin, such as hard plastic resin. The fall prevention device 2 comprises a fitting portion 21, a leg portion 22, and an extension portion 23. The fitting portion 21 has a shape that fits onto the outer circumferential surface 111 of the main body portion 11 and is the part that covers the main body portion 11 of the bird damage prevention device 1. Specifically, the fitting portion 21 has a plate-like shape that curves from the first end portion 211 to the second end portion 212, and the length from the first end portion 211 to the second end portion 212 is formed to be longer than one-quarter and shorter than half of the circumference of the outer circumference of the main body portion 11.

[0029] The leg portion 22 is connected to the first end portion 211 of the fitting portion 21 and extends to cover the split portion 12 of the bird damage prevention device 1. In this embodiment, the leg portion 22 sandwiches the split portion 12 from both sides by covering the two protruding pieces 13 of the bird damage prevention device 1. Specifically, the leg portion 22 extends from the first end portion 211 of the fitting portion 21 so as to fold back in the direction of a virtual circle that the curved fitting portion 21 forms part of, and has a first wall portion 221, a second wall portion 222, and a folded portion 223. The first wall portion 221, the second wall portion 222, and the folded portion 223 are each plate-shaped.

[0030] The first wall portion 221 extends from the first end portion 211 of the fitting portion 21. The second wall portion 222 extends from the tip of the first wall portion 221 by folding back via the folded portion 223 and is positioned opposite the first wall portion 221. The folded portion 223 is a portion that spreads in a direction intersecting the first wall portion 221 and connects the extended tip of the first wall portion 221 to the second wall portion 222.

[0031] The tip of such a leg portion 22 is folded back in a U-shape to form a groove portion 24 with a width that allows the two protruding pieces 13 of the bird damage prevention device 1 to be inserted. In other words, the portion between the first wall portion 221 and the second wall portion 222 is the groove portion 24 described above. Here, "inserting" broadly means that the protruding piece 13 is inserted and positioned in the space between the first wall portion 221 and the second wall portion 222. In other words, when inserted, there may be a gap between the protruding piece 13 and the first wall portion 221 and the second wall portion 222, or the protruding piece 13 may be in contact with the first wall portion 221 and the second wall portion 222. Also, the tip of the protruding piece 13 may or may not be in contact with the folded portion 223.

[0032] Furthermore, the distance between the first wall portion 221 and the second wall portion 222 gradually narrows towards the tip of the first wall portion 221. The tip, in this context, is the tip in the extension direction of the first wall portion 221, which extends outward from the fitting portion 21, and is the position on the leg portion 22 that is furthest from the fitting portion 21. In other words, the tip of the leg portion 22 that is furthest from the fitting portion 21 is tapered.

[0033] An opening 25 is formed between the second end 212 of the fitting portion 21 and the unconnected end 224 of the leg portion 22, which is opposite to the end of the leg portion 22 that connects to the first end 211 of the fitting portion 21. Specifically, the opening 25 is formed between the second end 212 of the fitting portion 21 and the unconnected end 224 of the second wall portion 222 of the leg portion 22. In other words, the opening 25 is formed when a part of the side wall of the substantially cylindrical body formed by the fitting portion 21 and the leg portion 22 is opened. The fall prevention device 2 is configured so that the bird damage prevention device 1 can be inserted into and removed through the opening 25.

[0034] The extension portion 23 is the portion that extends away from the substantially cylindrical body formed by the fitting portion 21 and the leg portion 22, from the second end portion 212, which is opposite to the first end portion 211 on the side from which the leg portion 22 of the fitting portion 21 extends, i.e., from the tip of the fitting portion 21. The tip of the extension portion 23 extending from the fitting portion 21 is formed with a thicker plate thickness compared to other parts.

[0035] [1-3. Stopper Configuration] The stopper 3 shown in Figure 9 is used by inserting it into the main body 11 of the bird damage prevention device 1 when it is attached to the cable 200, and is a component that fixes the position of the bird damage prevention device 1 on the cable 200.

[0036] In the bird damage prevention device 1 having a cylindrical main body portion 11 through which the cable 200 is inserted, as described above, the bird damage prevention device 1 can move along the cable 200 along the central axis A of the main body portion 11 while it is attached to the cable 200. In this case, if the bird damage prevention device 1 is affected by external factors such as wind while it is attached to the cable 200, the bird damage prevention device may move from its original position on the cable 200. The stopper 3 of this embodiment can suppress the movement of the bird damage prevention device 1 attached to the cable 200 in the longitudinal direction of the cable 200.

[0037] The stopper 3 is molded from rubber. However, the stopper is not limited to rubber, and can be made of any material that is elastically deformable. The stopper 3 is a lengthwise member, and the shape of its cross-section perpendicular to its length is such that it resembles an ellipse cut in half along its minor axis. That is, the stopper 3 has a curved surface 31 and a flat surface 32. The lengthwise direction is the same direction as the central axis A of the main body 11 when the stopper 3 is inserted inside the bird damage prevention device 1. The stopper 3 has an insertion groove 33 into which the cable 200 can be inserted, and a first groove-forming wall 34 and a second groove-forming wall 35 that face each other so that the insertion groove 33 is provided between them.

[0038] The insertion groove 33 has depth in the direction from the flat surface 32 toward the curved surface 31 and extends along its length. The insertion groove 33 has an insertion opening 331 on the flat surface 32 side, dividing the flat surface 32 into a tip 341 on the side of the first groove-forming wall 34 and a tip 351 on the side of the second groove-forming wall 35. The insertion groove 33 has a shape that narrows toward the insertion opening 331 in the depth direction. That is, the length of the first groove-forming wall 34 and the second groove-forming wall 35 increases toward the tip. In other words, the tip 341 of the first groove-forming wall 34 and the tip 351 of the second groove-forming wall 35, which face each other, have thickness in the direction perpendicular to the depth direction.

[0039] The stoppers 3 are molded in a connected state. The molded product 300 shown in Figure 10 is in a state where multiple stoppers 3 are connected. The stoppers 3 are connected to the connecting portion 30 of the molded product 300. Separate item 1 before use.

[0040] As shown in Figure 11, the stopper 3 is inserted into the main body 11 of the bird damage prevention device 1 such that the cable 200 is fitted into the insertion groove 33, while the cable 200 is inserted through the main body 11 of the bird damage prevention device 1. At this time, the stopper 3 is inserted so that the flat surface 32 of the stopper 3 faces the covering piece 17 of the bird damage prevention device 1, but is positioned inside the covering piece 17.

[0041] As shown in Figure 12, with the stopper 3 inserted inside the main body 11 of the bird damage prevention device 1 and the fall prevention device 2 attached to the bird damage prevention device 1, the fall prevention device 2 holds the bird damage prevention device 1 in a way that prevents it from expanding through the slit 12. As the bird damage prevention device 1 is held by the fall prevention device 2 in this way, the slit 12 is tightened in a closing direction. During this tightening, the tip 341 of the first groove forming wall 34 and the tip 351 of the second groove forming wall 35 are also tightened by the inner surface of the main body 11 in a direction that narrows the insertion groove 33. That is, this tightening also tightens the insertion opening 331 of the insertion groove 33 of the stopper 3 inserted inside the main body 11 in a closing direction. Therefore, by attaching the fall prevention device 2 to the part of the main body 11 of the bird damage prevention device 1 in which the stopper 3 is inserted, the force with which the stopper 3 grips the cable 200 is strengthened. As a result, the movement of the bird damage prevention device 1 along the cable 200 by the stopper 3 is easily suppressed.

[0042] [1-4. How to attach bird damage prevention devices to cables] Next, using Figures 13A to 13E, an example of how to attach the bird damage prevention device 100, which includes a bird damage prevention device 1, a fall prevention device 2, and a stopper 3, to the cable 200 will be explained. Note that the operation of the bird damage prevention device 1, fall prevention device 2, and stopper 3 described below is performed by a person operating these components.

[0043] First, as shown in Figure 13A, with multiple bird repellent devices 1 connected together, the forwardest bird repellent device 1 is positioned above the cable 200 so that the cable 200 is placed between the two protruding pieces 13 of the bird repellent device 1. Then, by pressing the cable 200 against the covering piece 17 of the bird repellent device 1, the gap between both ends of the slit 12 is widened, and with the main body 11 of the bird repellent device 1 expanded, the cable 200 is passed through the inside of the main body 11. For example, three consecutive bird repellent devices 1, the process of passing the cable 200 through the inside of the main body 11 is performed as described above.

[0044] Next, as shown in Figure 13B, rotate the bird-repellent device 1 with the cable 200 inserted so that the two protruding pieces 13 are positioned above the cable 200. Then, align the fall prevention device 2 above the bird-repellent device 1 so that the opening 25 of the fall prevention device 2 faces the two protruding pieces 13. Then, insert the two protruding pieces 13 into the groove 24 of the fall prevention device 2 through the opening 25, and hook the groove 24 onto the tips of the two protruding pieces 13.

[0045] Then, after hooking the grooves 24 onto the tips of the two protruding pieces 13, the extension 23 of the fall prevention device 2 is pushed downward so that the fall prevention device 2 rotates in the direction of arrow Y in Figure 13B. As a result, the main body 11 of the bird damage prevention device 1 enters the fitting portion 21 of the fall prevention device 2 through the opening 25 of the fall prevention device 2, and the fitting portion 21 covers the main body 11. In other words, with the two protruding pieces 13 inserted into the grooves 24 and the fitting portion 21 fitted to the outer circumferential surface 111 of the main body 11, the fall prevention device 2 is attached to the outer circumference of the bird damage prevention device 1.

[0046] Next, as shown in Figure 13C, the cable 200 is passed through the remaining part of the main body 11 of the connected bird repellent device 1, which does not have the cable 200 inserted through it, as described above. Next, as shown in Figure 13D, the cables 200 to all of the connected bird deterrents 1 After the insertion is complete, the stopper 3 is inserted into the main body 11 of the bird damage prevention device 1 located at the rearmost position. Specifically, first, the cable 200 is inserted into the insertion groove 33 of the stopper 3, and the stopper 3 is attached to the predetermined position on the cable 200. Then, the connected bird damage prevention devices 1, which are attached to the cable 200, are slid to fit the stopper 3 fixed on the cable 200 into the main body 11.

[0047] Next, as shown in Figure 13E, the bird damage prevention device 1 is rotated with the cable 200 inserted so that the two protruding pieces 13 are positioned above the cable 200. Then, the fall prevention device 2 is attached to the outer circumference of the rearmost bird damage prevention device 1, with the stopper 3 inserted inside the main body 11, as described above. In other words, in this embodiment, as shown in Figure 12, the fall prevention device 2 is attached to the outer circumference of the bird damage prevention device 1 with the two protruding pieces 13 inserted into the groove 24 and the fitting portion 21 fitted to the outer circumference surface 111 of the main body 11, with the stopper 3 inserted inside. Alternatively, the fall prevention device 2 may be attached only to the outer circumference of the rearmost bird damage prevention device 1, as described above, when the stopper 3 is not inserted inside the main body 11 of the rearmost bird damage prevention device 1.

[0048] [2. Effects] According to the embodiments described in detail above, the following effects can be obtained. [2-1. Effectiveness of bird damage prevention devices] (2a) In this embodiment, with the cylindrical main body 11, which can be expanded by the slit 12, expanded, the cable 200 is passed through the slit 12, and the bird damage prevention device 1 is attached by covering the cable 200. Therefore, the bird damage prevention device 1 can be easily attached to the cable 200 by passing the cable 200 through the slit 12. In addition, multiple bird damage prevention devices 1 can be connected or disconnected by inserting the hook piece 141 of the connecting leg 14 of one bird damage prevention device 1 into the connecting hole 152 of the connecting base 15 of another bird damage prevention device 1, or by removing it from the connecting hole 152. Therefore, the length of the bird damage prevention device 100 can be easily adjusted. Thus, the ease of attachment to the cable 200 can be improved.

[0049] (2b) In this embodiment, the bird damage prevention device 1 attached to the cable 200 has the cable 200 inserted inside the main body 11. As a result, the bird damage prevention device 1 can move along the cable 200 along the central axis A of the main body 11 while attached to the cable 200. Therefore, even when it is necessary to attach bird damage prevention devices 1 over a wide area on the cable 200, the next bird damage prevention device 1 can be attached while shifting the position of the attached bird damage prevention device 1 on the cable 200. As a result, the bird damage prevention devices 1 can be attached over a wide area without moving from a predetermined position. Therefore, compared to a configuration in which the range in which the devices can be attached from a predetermined position is short, the amount of movement required to attach to an attachable position is reduced, thus reducing working time.

[0050] (2c) In this embodiment, the centers of gravity of the two connecting bases 15, each located on either side of the slit 12, are positioned closer to the slit 12 than the central axis A of the main body 11. That is, the two connecting bases 15 are on the slit 12 side of the orthogonal line C shown in Figure 4, and each extends outward from the outer circumferential surface 111 of the main body 11 at an angle to the orthogonal line C. Therefore, the bird damage prevention device 1 is more stable when the slit 12 is positioned downwards when the cable 200 is inserted. Consequently, rotation of the bird damage prevention device 1 attached to the cable 200 around the central axis A of the main body 11 is suppressed, and the bird damage prevention device 1 is prevented from detaching from the cable 200 due to the cable 200 coming out of the slit 12.

[0051] (2d) In this embodiment, the bird damage prevention device 1 extends outward from both ends of the slit portion 12. It has two protruding pieces 13. Therefore, when the bird damage prevention device 1 is attached to the cable 200, it is more stable when the two protruding pieces 13 are positioned downwards. Thus, it is possible to prevent the bird damage prevention device 1 from coming off the cable 200 due to the cable 200 slipping out of the slit 12. In addition, since the two protruding pieces 13 extend from both ends of the slit 12 with a wide gap between them, it is easy to pass the cable 200 through the slit 12 along the gap between the two protruding pieces 13.

[0052] (2e) In this embodiment, the bird damage prevention device 1 has a covering piece 17 inside the main body 11 that covers the slit 12. Therefore, when the bird damage prevention device 1 is attached to the cable 200, the slit 12 is covered by the covering piece 17. That is, when the cable 200 is inserted through the main body 11, the covering piece 17 is positioned between the cable 200 and the slit 12. Therefore, it is possible to prevent the bird damage prevention device 1 from coming off the cable 200 due to the cable 200 coming out of the slit 12. In addition, the covering piece 17 is positioned at a predetermined distance from the slit 12 in the direction of the centerline shown in Figure 4. Therefore, since the cable 200 that has passed through the slit 12 is inserted into the main body 11 through the space between the slit 12 and the covering piece 17, the covering piece 17 is less likely to get in the way when inserting the cable 200 into the main body 11.

[0053] (2f) In this embodiment, it is possible to connect multiple bird damage prevention devices 1 in the bird damage prevention device 100. Therefore, the length of the bird damage prevention device 100 can be easily adjusted by the number of bird damage prevention devices 1 that are connected.

[0054] [2-2. Effectiveness of fall prevention devices] (2g) In this embodiment, the bird damage prevention device 1 is held in a state where it cannot be expanded by the slit portion 12 by the fall prevention device 2. With the fall prevention device 2 attached to the outer circumference of the bird damage prevention device 1, the two protruding pieces 13 are inserted into the groove portion 24, and the main body portion 11 is covered by the fitting portion 21. Therefore, deformation that would cause the bird damage prevention device 1 to expand can be restricted by both the groove portion 24 and the fitting portion 21. As a result, it has a high ability to hold the bird damage prevention device 1 in a state where it cannot be expanded. As a result, even if the bird damage prevention device 1 on the cable 200 moves due to rotation or other influences from the outside such as wind, it is possible to prevent the bird damage prevention device 1 from coming off the cable 200 by the cable 200 coming out of the slit portion 12. Furthermore, since the distance between the first wall portion 221 and the second wall portion 222 gradually narrows in the direction of extension, the entrance to the groove portion 24 for inserting the two protruding pieces 13 of the bird damage prevention device 1 becomes wider. Therefore, the insertion of the two protruding pieces 13 into the grooves 24 becomes easier, making it easier to attach the fall prevention device 2 to the bird damage prevention device 1.

[0055] (2h) In this embodiment, the fitting portion 21 has an extension portion 23 at its tip that extends away from a substantially cylindrical body formed by the fitting portion 21 and the leg portion 22, in which a part of the wall is open. Therefore, when fitting the fitting portion 21 into the main body portion 11 of the bird damage prevention device 1, the substantially cylindrical body formed by the fitting portion 21 and the leg portion 22, in which a part of the side wall is open, opens when the extension portion 23 is pulled in the direction of extension. Then, by pushing the extension portion 23 toward the leg portion 22, the main body portion 11 can be easily moved in the direction of being fitted into the fitting portion 21.

[0056] [2-3. The effect of stoppers] (2i) In this embodiment, the main body 11 has a stopper 3 that is inserted into the interior of the main body 11. The stopper 3 is inserted into the main body 11 with the cable 200 inserted into the insertion groove 33. As a result, the stopper 3 fills the gap between the cable 200 inserted into the main body 11 and the main body 11. Therefore, even if the bird damage prevention device 1 tries to move in the direction of the central axis A of the main body 11, the movement is suppressed by friction between the bird damage prevention device 1 and the stopper 3, and between the stopper 3 and the cable 200. Thus, the main body 11 By inserting the cable 200 inside, the position of the bird damage prevention device 1, which is movable along the cable 200, can be fixed on the cable 200.

[0057] (2j) In this embodiment, the respective tip portions 341 and 351 of the first groove-forming wall 34 and the second groove-forming wall 35 that constitute the insertion groove 33 of the stopper 3 have thickness in a direction perpendicular to the depth direction of the insertion groove 33. As a result, compared to a configuration in which the respective tip portions of each groove-forming wall constituting the insertion groove taper, the respective tip portions 341 and 351 are less likely to interfere with the main body 11, especially the covering piece 17, when inserted into the main body 11. Therefore, it is easier to insert the stopper 3 into the main body 11. In addition, when the fall prevention device 2 is attached to the bird damage prevention device 1, the main body 11 is tightened in the direction that closes the slit portion 12. When tightened in this way, the respective tip portions 341 and 351 of the stopper 3 are also tightened by the inner surface of the main body 11 in the direction that narrows the insertion groove 33, so that the position of the bird damage prevention device 1 on the cable 200, which is movable on the cable 200, can be fixed more firmly. In this embodiment, the two connecting bases 15 correspond to examples of the first and second connecting bases, and the two protruding pieces 13 correspond to examples of the first and second protruding pieces.

[0058] [3. Other Embodiments] While embodiments of this disclosure have been described above, it goes without saying that this disclosure is not limited to the embodiments described above and can take various forms.

[0059] (3a) In the above embodiment, the bird damage prevention device 100 is exemplified as comprising a bird damage prevention device 1, a fall prevention device 2, and a stopper 3, but the configuration of the bird damage prevention device is not limited thereto. For example, the bird damage prevention device may consist of a bird damage prevention device alone. Alternatively, for example, the bird damage prevention device may be configured to include a bird damage prevention device and a fall prevention device. Alternatively, for example, the bird damage prevention device may be configured to include a bird damage prevention device and a stopper.

[0060] [3-1. Other embodiments of bird damage prevention devices] (3b) In the above embodiment, an example was given in which the centers of gravity of the two connecting bases 15, each located on either side of the split portion 12, are located closer to the split portion 12 than the central axis A of the main body portion 11. However, the positions of the centers of gravity of the two connecting bases are not limited to this. For example, the positions of the centers of gravity of the two connecting bases may be in the vicinity of the central axis A in the direction of the line connecting the central axis A and the split portion 12.

[0061] (3c) In the above embodiment, the bird damage prevention device 1 has two protruding pieces 13 extending outward from both ends of the slit portion 12, and the configuration in which the two protruding pieces 13 extend from both ends of the slit portion 12 with a wide gap between them is illustrated. However, the configuration of the two protruding pieces is not limited to this. For example, the two protruding pieces may extend parallel to each other, with or without a gap between them. Also, for example, the bird damage prevention device may have a configuration that does not have two protruding pieces.

[0062] (3d) In the above embodiment, an example was given in which the bird damage prevention device 1 has a covering piece 17 that is positioned inside the main body 11 at a predetermined distance from the crack portion 12 and covers the crack portion 12. However, the configuration of the covering piece is not limited to this. For example, the covering piece may be positioned to cover the crack portion 12 without a predetermined distance and may have a configuration that is easily elastically deformable. Alternatively, for example, the covering piece may be positioned outside the main body and cover the crack portion. Alternatively, for example, the bird damage prevention device may have a configuration that does not have a covering piece.

[0063] [3-2. Other embodiments of fall prevention devices] (3e) In the above embodiment, the bird damage prevention device 1 has grooves 24 into which the two protruding pieces 13 are inserted, and fitting parts 21 that fit into the main body 11, and both of these parts control the deformation that would cause the bird damage prevention device 1 to expand. An example of a fall prevention device 2 configuration has been provided. However, the configuration of the fall prevention device is not limited to this. For example, in a configuration in which the bird damage prevention device does not have two protruding pieces, the fall prevention device may have legs that extend from the fitting portion to cover the split portion of the bird damage prevention device and sandwich the split portion from both sides.

[0064] (3f) In the above embodiment, an example was given in which the fall prevention device 2 has an extension portion 23 that extends from the second end portion 212 of the fitting portion toward a substantially cylindrical body formed by the fitting portion 21 and the leg portion 22, with a part of the side wall open. However, the configuration of the extension portion is not limited to this. For example, the extension portion may extend outward from the outer circumferential surface of the fitting portion, closer to the first end than the second end portion of the fitting portion. Also, for example, the fall prevention device may have a configuration without an extension portion.

[0065] (3g) In the above embodiment, the folded portion 223 is exemplified as a plate-shaped portion that extends in a direction intersecting the first wall portion 221. However, for example, the folded portion may have a curved shape. Also, for example, the width of the folded portion 223 in the direction intersecting the first wall portion 221 may be extremely small. In other words, the leg portion 22 may have a small connecting portion between the first wall portion 221 and the second wall portion 222, and the extended end may have a pointed shape.

[0066] [3-3. Other embodiments of stoppers] (3h) In the above embodiment, the tip portions 341 and 351 of the first groove-forming wall 34 and the second groove-forming wall 35 that form the insertion groove 33 of the stopper 3 are shown as having thickness in a direction perpendicular to the depth direction of the insertion groove 33. However, the configuration of the tip portions of the first groove-forming wall and the second groove-forming wall is not limited to this. For example, the tip portions of the first groove-forming wall and the second groove-forming wall do not need to have thickness in a direction perpendicular to the depth direction of the insertion groove 33.

[0067] (3i) The functions of one component in the above embodiment may be distributed among multiple components, or the functions of multiple components may be integrated into one component. Also, some parts of the configuration of the above embodiment may be omitted. Also, at least some parts of the configuration of the above embodiment may be added to, substituted for, or otherwise replaced with the configuration of other above embodiments. Any aspect of the technical concept specified by the wording of the claims is an embodiment of the present disclosure. [Explanation of symbols]

[0068] 1...Bird damage prevention device, 2...Fall prevention device, 3...Stopper, 11...Main body, 12...Slit, 13...Protruding piece, 14...Connecting leg, 15...Connecting base, 16...Projection, 17...Covering piece, 21...Fitting part, 22...Leg, 23...Extension part, 24...Groove, 25...Opening, 31...Curved surface, 32, 151...Flat surface, 33...Insertion groove, 34...First groove forming wall, 35...Second groove forming wall, 100...Bird Damage prevention device, 111...outer surface, 112, 211...first end, 113, 212...second end, 141...hook piece, 152...connecting hole, 200...cable, 221...first wall, 222...second wall, 223...folded part, 224...unconnected end, 300...molded product, 301...connecting part, 331...insertion opening, 341, 351...tip, A...central axis, B...center line, C...orthogonal line.

Claims

1. A bird damage prevention device equipped with a bird damage prevention device that is attached to a cable, The aforementioned bird damage prevention device is The cylindrical main body through which the cable is inserted, A slit portion is provided along the axial direction of the main body portion, which allows the main body portion to be expanded and closed, Multiple protrusions extending away from the outer surface of the main body, At least one connecting leg portion extending along the axial direction from one end of the main body portion in the axial direction, and having a hooking piece at the tip extending from the main body portion, A connecting base provided at the other end of the main body in the axial direction, separated from the connecting leg, having a connecting hole through which the hook piece of another bird-repellent device is inserted, It has, The at least one connecting base has a first connecting base and a second connecting base located on both sides of the split portion, The centers of gravity of the first connecting base and the second connecting base are located closer to the split portion than the axis in the direction of the line connecting the axis and the split portion, respectively. The bird damage prevention device has a first protruding piece and a second protruding piece that extend outward from both ends of the slit, The first and second protruding pieces extend from both ends of the slit portion so as to widen the distance between them, in a bird damage prevention device.

2. A bird damage prevention device according to Claim 1, The bird damage prevention device is a bird damage prevention device having a covering piece that is arranged inside the main body and has a length along the axial direction and covers the crack.

3. A bird damage prevention device comprising a plurality of bird damage prevention devices described in claim 1 or claim 2, connected together.

4. A bird damage prevention device according to any one of claims 1 to 3, The bird damage prevention device includes a fall prevention device that is attached to the bird damage prevention device and used to hold the bird damage prevention device in a state where it cannot be opened by the slit portion, The aforementioned fall prevention device is A fitting portion having a shape that fits onto the outer circumferential surface of the main body, The fitting portion extends from the aforementioned fitting portion so as to cover the split portion, and the legs sandwich the split portion from both sides, The leg portion has a first wall portion extending from the fitting portion and a second wall portion extending from the extended tip of the first wall portion by folding back via a folded portion. The bird damage prevention device is attached to the outer circumference of the bird damage prevention device, wherein the fall prevention device is sandwiched between the first wall portion and the second wall portion from both sides, and the fitting portion is fitted to the outer circumference surface of the main body portion.

5. A bird damage prevention device according to any one of claims 1 to 4, The bird damage prevention device has a stopper that is inserted into the main body of the bird damage prevention device for use. The stopper is, Having a length along the aforementioned axial direction, A bird damage prevention device having an insertion groove extending along the axial direction into which the cable can be inserted.

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