JPH026794Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention is a bird chasing windmill used to drive away harmful birds in fields and orchards, in which a striking sound is generated by the shaft rod and the bearing. This invention relates to a bearing structure that allows for

[Prior Art] A bird chasing windmill is a windmill with a metallic luster and a snake's eye pattern attached to it to scare away birds or keep them at bay. Its effectiveness has been recognized.

By the way, it has recently been recognized that mechanical impact sounds have a threatening effect not only on birds but also on underground moles.

[Problems to be solved by the invention] However, the bearing structure of conventional bird-following wind turbines simply supports the shaft so that it can be rotated horizontally depending on the direction of the wind, so it produces impact noise. I couldn't give it.

The present invention aims to provide a bearing structure for a bird chasing wind turbine that can generate mechanical impact noise when the wind turbine is in use.

[Means for solving the problem] In order to solve the above problem, by utilizing the movement of the shaft of the bird chasing windmill, which swings horizontally or swings vertically depending on the direction of the wind, This device attempts to produce a striking sound by causing the shaft to collide with the inner surface of the bearing, or by colliding with the uneven parts such as U-shaped grooves, small protrusions, and shallow grooves formed on the top surface of the bearing head. be.

[Function] According to the above means, a striking sound is generated each time the shaft passes through an uneven portion, and this striking sound vibrates the shaft and the bearing and propagates into the air, threatening the birds.
If the bearing is attached to a stake that protrudes from the ground, vibrations from the bearing will be transmitted through the stake and into the ground, potentially scaring moles.

[Embodiments of the invention] The invention will be described below with reference to drawings showing embodiments.

In the figure, 1 is the windmill, 2 is its shaft, and the wire is L.
It is bent into a letter shape and consists of a horizontal portion 2a, a vertical portion 2b, and a shaft end stopper 2c. Reference numeral 3 denotes a bearing, which is a cylinder made of metal or hard synthetic resin and has a central hole 4 with an inner diameter slightly larger than the diameter of the shaft rod 2, and has a prismatic head 5 and a lower cylindrical part 6. The inner side of the shaped portion 6 is a tapered hole 7 that expands downward. Reference numeral 8 denotes a U-shaped groove, which is cut out along the center hole 4 in one side wall of the head 5. Reference numeral 9 denotes a stopper, which has the inner surface of the upper edge of the U-shaped groove slightly protruding inward, and supports the horizontal part 2a of the shaft 2 so that it does not fall into the U-shaped groove 8, and also strongly supports the horizontal part 2a. When pushed downward, stopper 9
is elastically expanded so that the horizontal portion 2a can be dropped into the U-shaped groove 8. 10 is a stake driven into the ground 11. 12 is a fastener for fixing the bearing tool 3 to the pile 10.

In the bearing structure of the bird chasing windmill having the above configuration, when the horizontal part 2a of the shaft rod 2 is outside the U-shaped groove 8 of the bearing tool 3, the horizontal part 2a is rotated horizontally due to the change in wind direction. The horizontal portion 2a that is pulled downward by gravity is the opening edge corner portion 8a of the U-shaped groove 8.
It makes a sound every time it collides with.

Further, when the wind turbine 1 is subjected to a vertical force, the shaft is tilted, and the lower part of the vertical portion 2b of the shaft 2 collides with the inner wall 7a of the inner tapered hole 7 of the bearing 3, producing a striking sound. And this kind of impact sound is pile 10
It is transmitted to the ground 11 through the air, and exerts a threatening effect on moles.

Next, when fixing the shaft 2 in a fixed direction, as shown by the two-dot chain line in FIG. Horizontal movement is stopped. At this time, the shaft 2 is tilted with respect to the vertical wind, and the vertical portion 2b collides with the inner wall 7a of the tapered hole 7 of the bearing 3, producing a striking sound.

Therefore, the impact sound at this time is also transmitted to the ground 11 through the stake 10.

Next, FIG. 4 shows another embodiment of the present invention, in which the center hole of the bearing 3 is an upper tapered hole 13 that expands upward, and the inner wall 13a of the upper tapered hole 13 and Due to the collision with the shaft rod 2, the number of times the impact sound is generated can be increased. In addition, the one shown in FIG. 5 has a small protrusion 14 protruding from the upper surface of the head 5 of the bearing 3, so that when the shaft rod 2 is horizontally rotated, the horizontal portion 2a climbs over the small protrusion 14. When falling, the shaft rod 2 collides with the upper surface of the head 5, producing a striking sound.

Furthermore, what is shown in FIG. 6 shows another embodiment of the present invention, in which a shallow groove is formed on the upper surface of the head 5 of the bearing 3.
5, when the shaft rod 2 is rotated in the horizontal direction and the horizontal portion 2a falls into the shallow groove 15, the horizontal portion 2a and the bottom of the shallow groove 15, and the inner edge corner 15a of the shallow groove 15. It is designed to produce a striking sound when the two collide with each other.

[Effects of the invention] As described above, according to the invention, if the horizontal part of the shaft rod is brought out of the U-shaped groove of the bearing, the shaft rod is rotated in the horizontal direction, and the horizontal part moves into the corner of the U-shaped groove. and the vertical part collides with the inner wall of the tapered hole of the bearing, producing a striking sound.When fixing the shaft in a certain direction, the horizontal part of the shaft is inserted into the U-shaped groove of the bearing. Just push it in, and the vertical part collides with the inner wall of the tapered hole of the bearing, producing a striking sound that not only intimidates birds, but also travels underground and has the effect of driving away moles.

[Brief explanation of the drawing]

All drawings show examples of the present invention.
Fig. 1 is a perspective view showing how the wind turbine is used, Fig. 2 is a perspective view of the bearing, Fig. 3 is a sectional view taken along line A-A in Fig. 2, and Fig. 4 shows another embodiment of the present invention. A sectional view showing,
Fig. 5 is a perspective view showing another embodiment of the present invention; Fig. 6 is a perspective view showing another embodiment of the present invention;
The figure is a perspective view showing another embodiment of the present invention. 1...Windmill, 2...Axis rod, 2a...Horizontal part, 2
b...Vertical part, 3...Bearing tool, 4...Tapered hole, 8...U-shaped groove.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A bird chaser in which a windmill is inserted into the tip of the horizontal part of an L-shaped shaft, and the vertical part of this shaft is rotatably supported on a cylindrical bearing. In a bearing mechanism for a commercial wind turbine, the vertical part of the shaft rod is inserted into the bearing tool, and a tapered hole is provided with a gap between the shaft rod and the tapered hole that widens downward or upward. For bird chasing, the shaft rod is provided with unevenness so that when the shaft rod is rotated in the horizontal direction, when the shaft rod overcomes the unevenness, the upper surface of the head of the bearing tool collides with the shaft rod and generates a striking sound. Wind turbine bearing structure. (2) A U-shaped groove cut out along the center hole is formed on the upper surface of the head of the bearing, and the inner surface of the upper edge of this U-shaped groove supports the horizontal part of the shaft rod. A bearing structure for a wind turbine for bird following according to claim 1, characterized in that a stopper is provided to allow passage of the horizontal portion when it is strongly pushed into the U-shaped groove.