JP4206289B2 - Bird damage prevention tool - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention mainly relates to a bird damage prevention device installed to prevent birds such as crows and pigeons from nesting on a power pole.
[0002]
[Prior art]
[Patent Document 1]
Japanese Patent Laid-Open No. 10-84839 [Patent Document 2]
JP 2003-000134 A [Patent Document 3]
Japanese Patent Laid-Open No. 2001-258464
A bird harm prevention tool in which a large number of rod-shaped protrusions are arranged with a close interval in order to prevent birds such as crows and pigeons from flying is known from the above-mentioned Patent Documents 1 and 2 and the like. Patent Document 3 restricts the space so that a nest cannot be formed by suspending a sphere on a utility pole or the like.
[0004]
[Problems to be solved by the invention]
By the way, the nesting space on the utility pole is greatly different depending on the state of attachment of the arm bracket, the presence or absence of a switch, a transformer, etc., but the bird damage prevention device described in the above-mentioned Patent Documents 1 to 3 etc. Then, there was no other way than to deal with the difference in the situation by increasing / decreasing the number of attachments and the size of the sphere. For this reason, in the said conventional preventive tool, the measure at an attachment site was not easy, and there existed a possibility that the space which can be nested depending on the situation remained, and could not prevent bird damage effectively.
In addition, in the conventional prevention device in which a large number of rods are arranged upward, it is possible to hook a wire hanger etc. carried by birds in the mouth, so that there is little space on the utility pole. But there was a risk of nesting.
[0005]
[Means for Solving the Problems]
The present invention seeks to eliminate the disadvantages of the conventional bird damage prevention device.
For this purpose, the bird damage prevention device according to the present invention supports a rod-shaped trunk shaft made of a synthetic resin material substantially vertically by a fixture fixed on a power pole, and a spiral locus drawn on the side surface of the trunk shaft. A plurality of through-holes are formed on the outer periphery of the glass fiber so as to be inclined at an appropriate interval on the upper surface, and a polyethylene resin film is applied to the outer peripheral surface of the glass fiber to form a straight rod-like branch having a diameter smaller than that of the main shaft. Forming a rod, fixing a retaining member having a diameter larger than that of the through hole to one end of the branch rod, inserting the branch bar into each through hole, and supporting the branch rod to be inclined downward from the trunk axis; A plurality of branch bars are attached to the trunk axis in a radial direction facing in all directions in plan view.
For this reason, the branch bar can be freely extended in a necessary space according to the situation on the utility pole, making it difficult to nest birds, so that a short circuit accident can be prevented.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view of a bird harm prevention tool according to the present invention, and FIG. 2 is a plan view thereof. In the figure, 1 is a trunk shaft that is supported substantially vertically, and 2 is a branch bar attached to the trunk shaft. The main shaft 1 has a round bar shape with a diameter of about 10 mm having rigidity made of an insulating synthetic resin material. Further, the branch bar 2 is made of a glass fiber having high insulation and rigidity, and is a linear bar-shaped body having a diameter smaller than that of the trunk shaft 1, and a polyethylene resin film is applied to the outer peripheral surface thereof. 3 and 4, a plurality of through holes 3a, 3b, 3c,... Are formed on the side surface of the trunk shaft 1 at appropriate intervals so as to face in all directions in plan view. 2 is inserted into the through holes 3a, 3b, 3c,... Each of the through holes 3a, 3b, 3c,... Is formed in an inclined shape with an angle α of about 30 degrees with respect to the horizontal plane, so that each branch bar 2 is connected to the through holes 3a, 3b, 3c,. By being inserted, it is attached so as to hang downward from the trunk shaft 1 by about 30 degrees. In this embodiment, the through holes 3a, 3b, 3c,... Are arranged on the spiral locus 4 drawn on the side surface of the trunk shaft 1 at an angle β of 45 degrees as shown in FIG. By being formed, each branch bar 2 faces in all directions.
[0008]
Then, a cap-shaped retaining member 5 having a larger diameter than the through holes 3a, 3b, 3c,... Is attached to at least the inclined upper end of each branch bar 2 and fixed with an adhesive or the like. The through holes 3a, 3b, 3c,... Are not pulled out. In addition, as shown in the figure, the same retaining member 5 may be attached to the inclined lower end portion of each branch bar 2 after each branch bar 2 is inserted into the through hole.
[0009]
As shown in FIG. 5, the bird damage prevention device configured in this way has a lower end portion of the main shaft 1 attached to a cylindrical attachment 9 fixed to a brace 7 of a utility pole 6 via a clamp 8. By inserting it, it is supported substantially vertically, and by projecting each branch rod 2 radially on this utility pole in all directions, birds can be prevented from flying and nesting. In particular, since each branch bar 2 is supported in a downwardly inclined manner, even if a wire or the like for nest building is brought in, it falls along the slope and makes nesting difficult.
Further, the branch bar 2 does not need to be inserted through all of the through holes 3a, 3b, 3c,..., And can be mounted only on necessary portions on the utility pole, and can be easily cut to an appropriate length by a cutter. Therefore, it can be freely extended in a space where there is a risk of nesting on a power pole so as not to contact a switch or a transformer.
[0010]
In addition, since this bird damage prevention device can be easily attached by simply fixing the attachment 9 to the arm 7 or the like, it can be freely set or expanded according to the situation of the space on the utility pole regardless of the attachment location.
[0011]
FIG. 6 shows another embodiment of the retaining member 5. The retaining member 5 shown in this embodiment is formed with bifurcated gripping portions 5a, 5a integrally on both sides of the opening, and is shown in FIG. As described above, when the retaining member 5 is attached to the inclined upper end portion of the branch bar 2, the gripping part clamps the trunk shaft 1 from both sides so that unnecessary movement of the branch bar 2 is prevented. Yes.
[0012]
In the above embodiment, the retaining member 5 formed separately from the branch bar 2 is mounted. However, the retaining member 5 may be formed integrally with the end of the branch bar 2 or the end of the branch bar 2 may be formed. A portion corresponding to the retaining member 5 may be formed by bending the portion. Needless to say, the attachment angle of the branch bar 2 with respect to the main shaft 1 is not limited to the above embodiment.
[0013]
【The invention's effect】
As described above, the bird damage prevention device according to the present invention has a plurality of through holes formed at appropriate intervals so as to be inclined on the side surface of the trunk shaft that is supported substantially vertically. The branch bar is inserted into the branch bar so that the branch bar is supported in an inclined shape. Therefore, the branch bar can be cut to an appropriate length according to the situation and can be freely extended in a necessary space. It is completely difficult to effectively prevent bird damage.
[Brief description of the drawings]
FIG. 1 is a perspective view of a bird harm prevention tool showing an embodiment of the present invention.
FIG. 2 is a plan view of the bird harm prevention tool of FIG.
FIG. 3 is an exploded perspective view of a bird harm prevention tool showing an embodiment of the present invention.
FIG. 4 is a side view of the trunk shaft of the bird harm prevention apparatus showing the embodiment of the present invention.
5 is a perspective view showing a usage state of the bird harm prevention tool of FIG. 1. FIG.
FIG. 6 is an exploded perspective view of essential parts showing another embodiment of the bird harm prevention tool of the present invention.
FIG. 7 is a perspective view of an essential part showing another embodiment of the bird harm prevention tool of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Trunk 2 Branch bar 3a, 3b, 3c, ... Through-hole 4 Trajectory 5 Detachment member 9 Attachment

Claims (1)

A rod-shaped trunk shaft made of a synthetic resin material is supported substantially vertically by a fixture fixed on a power pole , and a plurality of through holes are formed at appropriate intervals on a spiral trajectory drawn on the side surface of the trunk shaft. It is formed so as to be inclined with respect to the trunk shaft, and a linear rod-like branch bar having a diameter smaller than that of the trunk shaft is formed by applying a polyethylene resin film to the outer peripheral surface of the glass fiber, and the one end of the branch rod is A retaining member having a diameter larger than that of the through hole is fixed, the branch bar is inserted into each of the through holes, and the branch bars are supported so as to be inclined downward from the trunk axis. Bird damage prevention equipment characterized by being attached in a radial direction facing in all directions.

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