Bird damage prevention equipment

Abstract

To provide a bird damage prevention device capable of preventing branch sticks from coming off.SOLUTION: A bird damage prevention device comprises a support, at least one branch stick unit provided along an axial direction of the support and having a plurality of branch sticks, and holding members respectively provided for the branch stick units to hold the branch sticks at a prescribed angle. The branch stick unit includes a base part fixed to an outer peripheral surface of the support, and the plurality of branch sticks extending obliquely downward radially from the base part and formed integrally with a body part, where each branch stick is configured to be able to change an inclination angle relative to the body part so as to extend substantially parallel to the support by elastic deformation. The holding members are configured to move in the axial direction along the support, and to be connected to the branch stick unit so as to respectively hold the branch rods at the prescribed inclination angle.SELECTED DRAWING: Figure 7

Description

[Technical Field]

[0001] The present invention relates to a bird damage prevention device. [Background technology]

[0002] Various bird pest control devices have been proposed to prevent birds from landing on electric wires. For example, Patent Document 1 discloses a bird pest control device in which multiple branch rods are attached to a support post and extend diagonally downward in a radial pattern. In this bird pest control device, the support post and branch rods are assembled so that each branch rod can rotate up and down relative to the support post. In addition, a holding member is attached to the support post, and this holding member can hold the branch rods at a predetermined angle. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 6196451 DISCLOSURE OF THE INVENTION [Problem to be solved by the invention]

[0004] However, in the above bird pest prevention device, the pole and the support are assembled after the fact, so there is a risk that the support and the pole may separate when an external force is applied, and the pole may come off the support, which could cause the bird pest prevention device to fail to perform its intended function, or the pole may fall and cause some damage.

[0005] The present invention has been made to solve the above problems, and aims to provide a bird damage prevention device that can prevent branch poles from coming off. [Means for solving the problem]

[0006] A bird damage prevention device according to a first aspect comprises a support pole, at least one branch pole unit provided along the axial direction of the support pole and having a plurality of branch poles, and a holding member provided for each of the branch pole units for holding the branch poles at a predetermined angle, wherein the branch pole unit has a base portion fixed to the outer peripheral surface of the support pole, and a holding member extending obliquely downward in a radial manner from the base portion, base and the plurality of branch rods formed integrally with the base The tilt angle is changeable by elastic deformation so that the branch rod extends approximately parallel to the support, and the holding member is configured to be movable in the axial direction along the support, and is configured to hold each branch rod at a predetermined tilt angle by being connected to the branch rod unit.

[0007] A bird pest prevention device according to a second aspect is the bird pest prevention device according to the first aspect, wherein the branch poles are base The base end portion connected to the has at least one arch portion having an arch shape.

[0008] The bird pest prevention device of the third aspect is the bird pest prevention device of the first or second aspect, wherein each of the holding members has a regulating portion for regulating the angle between each of the branch rods and the support post from widening, and is configured so that the regulating portion engages with each of the branch rods by rotating each of the holding members relative to the support post.

[0009] A bird pest prevention device according to a fourth aspect is a bird pest prevention device according to any one of the first to third aspects, wherein when the holding member is separated from the branch rod unit and the inclination angle of each branch rod is changed so that it extends parallel to the support by elastic deformation, the regulating portion of the holding member is configured to be able to maintain the inclination angle of each branch rod.

[0010] A bird-pest prevention device according to a fifth aspect is the bird-pest prevention device according to any one of the first to fourth aspects, wherein each of the branch poles has a support portion that supports the holding member from below. [Effects of the Invention]

[0011] According to the present invention, it is possible to prevent the branch rod from coming off. [Brief explanation of the drawings]

[0012] [Figure 1] FIG. 2 is a perspective view of the bird damage prevention device in use. [Figure 2] FIG. 10 is a perspective view of a first support unit to which a branch rod unit is attached. [Figure 3] FIG. 10 is a plan view of the branch rod unit attached to the support pole. [Figure 4] FIG. 10 is an enlarged perspective view of a branch rod unit attached to a first support unit. [Figure 5] FIG. 2 is a perspective view of the holding member as seen from above. [Figure 6] FIG. 2 is a side view of the bird pest control device in the storage state. [Figure 7] FIG. 10 is an enlarged perspective view showing the assembly of the bird damage prevention device. [Figure 8] FIG. 10 is an enlarged perspective view showing the assembly of the bird damage prevention device. [Figure 9] FIG. 10 is an enlarged perspective view showing the assembly of the bird damage prevention device. [Figure 10] FIG. 10 is a side view showing another example of the branch rod. DETAILED DESCRIPTION OF THE INVENTION

[0013] Hereinafter, an embodiment of the bird pest control device according to the present invention will be described with reference to the drawings. First, an outline of the bird pest control device will be described, and then a supplementary explanation of how to use the bird pest control device will be provided.

[0014] <1. Overview of bird damage prevention equipment> Fig. 1 is a perspective view of a bird pest prevention device in use. As shown in Fig. 1, the bird pest prevention device according to this embodiment comprises a rod-shaped support 1, a plurality of branch rod units 2 provided at predetermined intervals along the axial direction (vertical direction) of this support 1, and a plurality of holding members 3 for holding the branch rods of each branch rod unit 2 at a predetermined angle. Each member will be described below.

[0015] <1-1. Support> In this embodiment, the support 1 includes three support units 1A to 1C and an attachment unit 1D for attaching the support 1 to a fixed portion. As shown in Fig. 1, the three support units 1A to 1C are configured by lining up from top to bottom a first support unit 1A, a second support unit 1B, and a third support unit 1C, which are connected in the axial direction. The attachment unit 1D is attached to the lower end of the third support unit 1C.

[0016] FIG. 2 is a perspective view of a first support unit to which a branch rod unit and a connecting member are attached. As shown in FIG. 2, each support unit 1A to 1C has a cylindrical shaft member 11, and a branch rod unit 2 is attached to the upper end of each support unit 1A to 1C. As will be described later, each branch rod unit 2 has a cylindrical base 22 fixed to the upper end of the shaft member 11, and axially extending protrusions (not shown) are formed on the inner wall surface of this base 22 at predetermined intervals in the circumferential direction. Meanwhile, axially extending protrusions 12 are formed on the outer circumferential surface of the lower end of each support unit 1A to 1C at predetermined intervals in the circumferential direction. These protrusions 12 are configured to be splined between the protrusions formed on the inner wall surface of the base 22. In this way, the three support units 1A to 1C are connected together so as not to rotate axially.

[0017] 1, the mounting unit 1D attached to the lower end of the third support unit 1C has a cylindrical shaft member 14. A jig 15 for fixing the bird pest control device to the rectangular parallelepiped fixed device 10 is attached to the lower end of this shaft member 14.

[0018] The jig 15 has a plate-shaped first portion 151 extending horizontally from the lower end of the shaft member 14, a plate-shaped second portion 152 extending downward from the tip of the first portion 151, and a pressing member 153 that presses the fixture 10 in contact with the first portion 151 and the second portion 152 toward the second portion 152. This allows the fixture 10 to be clamped by the first portion 151, the second portion 152, and the pressing member 153.

[0019] As described above, the connecting member 8 is inserted from above into each of the connected support units 1A to 1C and the mounting unit 1D. As shown in FIG. 2, the connecting member 8 has a rod-shaped main body 81 with a male thread formed on its outer circumferential surface, and a retaining portion 82 attached to the upper end of the main body 81. As shown in FIG. 1, the lower end of the connecting member 8 inserted from the upper end of the first sub-middle unit protrudes from the lower end of the mounting unit 1D, and by attaching a nut 83 to this protruding portion, the first portion 151 of the jig 15 is sandwiched between the nut 83 and the mounting unit 1D. In this way, the bird damage prevention device is fixed to the jig 15.

[0020] <1-2. Branch rod unit> FIG. 3 is a plan view of a branch rod unit attached to a support pole, and FIG. 4 is an enlarged perspective view of a branch rod unit attached to a first support pole unit. As shown in FIG. 4, each branch rod unit 2 includes a cylindrical base 21 integrally fixed to the upper end of the shaft member 11 of the support pole unit 1A and a plurality of branch rods 22 extending radially from the outer periphery of the base 21, which are integrally formed. In this embodiment, as shown in FIG. 4, eight branch rods 22 are attached to each branch rod unit 2, spaced 45 degrees apart in a plan view. The lengths of the branch rods are adjusted so that the lines connecting the tips of the branch rods 22 form a square in a plan view. That is, in this embodiment, long and short branch rods are alternately arranged circumferentially. The long branch rods extend along the diagonals of the square and are approximately half the length of the diagonals. On the other hand, the short branch rods are approximately half the length of each side of the square.

[0021] As shown in Fig. 4, each branch rod 22 is connected to the base 21 and includes an arch portion 221 formed in an upwardly convex arch shape, and an extension portion 222 extending linearly from the tip of the arch portion 221, which are integrally formed. The tip of the arch portion 221 is located lower than the base end of the arch portion 221 that is connected to the base 21, and the extension portion 222 extends obliquely downward from the tip of the arch portion 221. More specifically, the extension portion 222 extends obliquely downward so as to form an angle of approximately 20 to 60 degrees (more preferably 30 to 45 degrees) from the horizontal in the initial state.

[0022] Furthermore, at the tip of the arch portion 221 of each branch rod 22, a protrusion 223 is formed on the surface facing the support 1. Each protrusion 223 protrudes from the arch portion 221 toward the support 1.

[0023] The branch rod unit 2 is formed from a resin material such as PP (polypropylene) or PE (polyethylene), which allows it to be elastically deformable. In other words, in the initial state, each branch rod 22 extends diagonally downward as shown in FIG. 4, but when an external force is applied, each branch rod 23 pivots upward and downward with the arch portion 221 as a fulcrum. For example, when an external force acts on each branch rod 22, each branch rod 22 pivots downward to form an angle of 70 degrees or more with the horizontal, and moves closer to the support 1. Alternatively, each branch rod 22 is pushed up by a holding member 3, which will be described next, so as to pivot upward.

[0024] <1-3. Holding member> Next, the holding member 3 will be described. Fig. 5 is a perspective view of the holding member as seen from above. As shown in the figure, the holding member 3 comprises an annular main body portion 31, a plurality of restricting portions 32A to 32H extending radially from the main body portion 31, and an engaging portion 33 formed on the upper surface of the main body portion 31, all of which are integrally formed from an elastically deformable material such as a resin material. A circular through-hole 311 is formed in the center of the main body portion 31, and the support 1 is adapted to be inserted through this through-hole 311. This allows the holding member 3 to move up and down along the support 1.

[0025] In this embodiment, eight restricting portions 32A-32H, the same number as the number of branch rods 22, are fixed at equal intervals to the outer peripheral surface of the main body 31. For ease of explanation, the restricting portions aligned in the circumferential direction will be referred to as the first to eighth restricting portions 32A-32H. Each restricting portion 32A-32H includes a plate-shaped first portion 321 extending radially from the outer peripheral surface of the main body 31 and a second portion 322 extending circumferentially from the tip of the first portion 321. The first portion 321 and the second portion 322 form each restricting portion 32A-32H into an L-shape in plan view. Furthermore, a protrusion 323 is formed at the tip of each second portion 322, extending slightly toward the support 1, to prevent the restricting portion 32A-32H from slipping out. With this configuration, each restricting portion 32A-32H holds the extension portion 222 of each branch rod 22 between the main body 31 and the restricting portions 32A-32H, as described below. The first and fifth restricting portions 32A and 32E, which are arranged at opposing positions in the circumferential direction, are provided with plate-shaped operating portions 324 extending radially from the tip of the first portion 321. Hereinafter, the circumferential direction in which the second portion 322 extends will be referred to as the first direction, and the opposite direction will be referred to as the second direction.

[0026] The engaging portion 33 is formed at a position corresponding to the first restricting portion 32A, and includes a first portion 331 extending upward and a second portion 332 extending circumferentially from the upper end of the first portion 331. The first portion 331 and the second portion 332 form the engaging portion 33 into an L-shape in a side view. As will be described later, the engaging portion 33 is adapted to engage with the arch portion 221 of one of the branch rods 32.

[0027] <2. How to use bird pest control equipment> Next, the assembly and usage methods of the bird pest control device configured as described above will be described with reference to FIGS. 6 to 9. First, the holding members 3 are attached to each of the support units 1A to 1C. That is, the lower end of the shaft member 11 is inserted into the through-hole 311 of the holding member 3. After the holding members 3 are attached to each of the support units 1A to 1C in this manner, the three support units 1A to 1C are connected, and an attachment unit 1D is connected to the lower end of the third support unit 1C. In each of the support units 1A to 1C, each holding member 3 is movable up and down between the branch rod unit 2 and the branch rod unit 2 or attachment unit 1D of the support unit connected below it. In the initial state, each holding member 3 is positioned near the lower end of each support unit 1A to 1C due to gravity.

[0028] Next, as shown in FIG. 6, the bird pest control device is shifted to a storage configuration (hereinafter referred to as the storage configuration). First, an external force is applied to each of the poles 22, causing them to tilt downward. Each pole 22 tilts downward due to elastic deformation, with the arch portion 221 as a fulcrum, and approaches the support pole 1 so as to be roughly parallel to the support pole 1. In this state, the holding member 3 is rotated, and each of the restricting portions 32A to 32H is positioned between the poles 22. Next, the operating portion 324 of the holding member 3 is grasped by hand and rotated in the first direction. This causes each of the restricting portions 32A to 32H to engage with the extension portion 222 of each pole 22. Furthermore, the protrusions 323 of each of the restricting portions 32A to 32H act as retainers, preventing the holding member 3 from rotating in the second direction. In this way, each pole 22 is held so as not to tilt upward. That is, the poles 22 can be bundled together. Furthermore, tape or ring members can be wrapped around the bundled poles to prevent the poles 22 from spreading out. This makes the bird damage prevention device compact, making it easy to store and transport.

[0029] Next, this bird damage prevention device is attached to a predetermined location (fixed portion 10). First, from the state shown in FIG. 6, the holding member 3 is rotated in the second direction to release the engagement between the holding member 3 and the branch rod 22. Next, as shown in FIG. 7, the holding member 3 is moved upward along the support 1 and attached to the branch rod unit 2. First, the circumferential position of each of the restricting portions 32A to 32H is adjusted so that they are positioned between the branch rods 22 in the circumferential direction, and the holding member 3 is moved upward in this state. When the holding member 3 is moved upward in this manner, the upper end of the outer periphery of the main body portion 31 of the holding member 3 pushes up the arch portion 221 of each branch rod 22. This causes each branch rod 22 to pivot upward, and the protrusions 223 of the arch portions 221 move radially outward. This allows the holding member 3 to move upward from the inside of the protrusions 223. Then, when the main body 31 moves above the protrusions 223, the pushing up of the holding member 3 is stopped and the holding member 3 is moved slightly downward, causing each branch rod 22 to tilt slightly downward to return to its original state due to elastic deformation. As a result, the protrusions 223 of each branch rod 22 engage with the lower end of the outer periphery of the main body 31, as shown in Figure 8. As a result, the holding member 3 is held by the protrusions 223 so as not to fall downward.

[0030] Next, the operating portion 324 of the holding member 3 is gripped by hand, and the holding member 3 is rotated in the first direction. As a result, as shown in Fig. 9, each of the restricting portions 32A to 32H engages with the arch portion 221 of each branch rod 22. Furthermore, the protrusions 224 of each of the restricting portions 32A to 32H act as retainers, preventing the holding member 3 from rotating in the second direction. As a result, the angle of the arch portion 221 of each branch rod 22 is restricted by the second portions 322 of each of the restricting portions 32A to 32H so that it does not expand in the circumferential direction. Furthermore, the engaging portion 33 engages near the upper end of one of the arch portions 221. In other words, the second portion 331 of the engaging portion 33 engages with the arch portion 221 from above.

[0031] Thereafter, the clamp 15 of the mounting unit 1D is attached to the fixed part 10. By performing the above steps, the branch rod 22 is held at a predetermined angle so that it extends diagonally downward. This makes it possible to prevent birds from approaching the fixed part 10. As a result, it is possible to prevent birds from building nests in the fixed part 10.

[0032] <3. Features> The bird damage prevention device configured as above can provide the following effects.

[0033] (1) In each branch rod unit 2, the base 21 and the branch rod 22 are formed integrally in advance. Therefore, compared to the conventional example in which the base and the branch rod are assembled afterwards, it is possible to prevent the branch rod from coming off the base. That is, in the conventional example, for example, if an external force is applied to the assembled base and branch rod, they may come apart, causing the branch rod to come off the base. In contrast, in this embodiment, the base 21 and the branch rod 22 are formed integrally, so the branch rod 22 is prevented from coming off the base 21. Therefore, it is possible to prevent problems such as the branch rod coming off during use, which causes the bird pest prevention device to lose its function, or the branch rod falling and being damaged.

[0034] (2) The arch portion 221 is provided at the base end of each branch rod 22, which improves the flexibility of the branch rod 22. For example, if the arch portion 221 is not provided and the extension portion 222 of the branch rod 22 is directly fixed to the base portion 21, the branch rod 22 will rotate around the fixed portion between the extension portion 222 and the base portion 21 as a fulcrum. In this state, the force caused by the rotation of the branch rod 22 is received only by the fixed portion, which may be damaged.

[0035] In contrast, if the arch portion 221 is provided in advance in an arch shape, the force generated when the branch rod 22 is turned can be received by bending the arch portion 221, thereby preventing the force from being concentrated on the fixed portion between the arch portion 221 and the base portion 21. As a result, damage to the fixed portion between the arch portion 221 and the base portion 21 can be prevented.

[0036] (3) The restricting portions 32A to 32H of the holding member 3 engage with the arch portions 221 of the branch rods 22, thereby holding the branch rods 22 between the main body 31 of the holding member 3 and the restricting portions 32A to 32H. This allows the extension angle of each branch rod 22 to be maintained constant. Because the restricting portions 32A to 32H can engage with the branch rods 22 even in the storage configuration in which the branch rods 22 are tilted downward, the branch rods 22 can be held in place so as not to spread out even in the storage configuration.

[0037] (4) If the bird pest prevention device is stored in the state shown in Fig. 6 and is transported to the fixture 10 when work is required, the bird pest prevention device can be easily put into a usable state by simply removing the holding member 3, tape, etc. from the branch pole 22 and carrying out the steps shown in Figs. 7 to 9. Therefore, there is no need to reassemble the bird pest prevention device at the work site, for example, by connecting the support units 1A to 1C. This improves workability at the work site.

[0038] <4. Modifications> Although one embodiment of the present invention has been described above, the present invention is not limited to the above embodiment and various modifications are possible without departing from the spirit of the present invention. In addition, the following modifications can be combined as appropriate.

[0039] <4-1> In the above embodiment, the base end of each branch rod 22 is provided with an arch portion 221, but the shape of the base end of each branch rod 22 is not particularly limited as long as the shape does not concentrate force on the fixed portion between each branch rod 22 and the base portion 21 when the branch rod 22 is tilted downward. For example, as shown in FIG. 10, the base end of the branch rod 22 can be formed in a wavy shape. That is, it is sufficient if a bent or curved shape is provided at the base end of the branch rod. Alternatively, such a base end can be omitted, and the extension portion 222 of the branch rod 22 can be directly fixed to the base portion 21.

[0040] <4-2> The shape of the holding member 3 is not particularly limited, as long as it is configured to be movable along the support 1 and to hold each branch rod 22 at a predetermined angle. Insofar as this is the case, the shapes of the restricting portions 32A-32H and the engaging portion 33, or the presence or absence of them, are not particularly limited. Furthermore, the protrusions 223 formed on each branch rod 22 may be provided as needed, but are not necessarily required.

[0041] <4-3> In the above embodiment, three support units 1A to 1C are connected, but two or four or more support units may be connected. Also, the mounting unit 1D is not necessarily required, as long as any part of the support is attached to the fixture 10 by some means. Also, in the above embodiment, the support units 1A to 1C are connected using the connecting member 8, but the connecting method is not particularly limited and they can be connected by various methods. Alternatively, the support units can be formed integrally in advance.

[0042] <4-4> The base 21 of each branch rod unit 2 is integrated with the support 1, but it is also possible to configure them as separate members and fix the base 21 to the support 1 with fixing means such as adhesive or screws.

[0043] <4-5> The number and length of the branch rods 22 are not particularly limited and can be changed as appropriate. [Explanation of symbols]

[0044] 1 post 2 Branch rod unit 21 Base 22 Branch 221 Arch 3 Retaining member 32A~32H Regulation part

Claims

1. The pillars and At least one branch rod unit provided along the axial direction of the support rod and having a plurality of branch rods; a holding member provided for each of the branch rod units, for holding the branch rod at a predetermined angle; Equipped with The branch rod unit has a base portion fixed to an outer peripheral surface of the support pole, and the plurality of branch rods extending diagonally downward radially from the base portion and formed integrally with the base portion, Each of the branch rods is configured to be able to change an inclination angle relative to the base portion by elastic deformation so as to extend substantially parallel to the support rod, The holding member is configured to be movable in the axial direction along the support and is configured to hold each branch rod at a predetermined inclination angle by being connected to the branch rod unit, thereby preventing bird damage.

2. The bird pest control device according to claim 1 , wherein the base end of each of the branch rods connected to the base portion has at least one arch portion having an arch shape.

3. Each of the holding members has a restricting portion for restricting the angle formed between each of the branch rods and the support rod from widening, The bird pest control device according to claim 1 or 2, wherein the restricting portions are configured to engage with the respective branch rods by rotating the respective holding members relative to the support posts.

4. When the tilt angle of each of the branch rods is changed so as to extend parallel to the support rod by elastic deformation while the holding member is separated from the branch rod unit, The bird pest control device according to claim 3 , wherein the restricting portion of the holding member is configured to be able to maintain the inclination angle of each of the branch rods.

5. The bird pest control device according to claim 1 or 2, wherein each of the branch rods has a support portion that supports the holding member from below.

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