JP2024004989A - precession body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a precession body in which a force in a twist rotation direction occurs upon receiving wind, which is also called "spiral motion" in which a rotation axis performs a periodic motion.

SOLUTION: A precession body includes a body part and a wind-receiving body erected in the body part. In the wind-receiving body, a vector in a twist rotation direction occurs when the wind-receiving body receives wind. The body part performs precession when the vector in the twist rotation direction occurs in the wind-receiving body.

SELECTED DRAWING: Figure 1

COPYRIGHT: (C)2024,JPO&INPIT

Description

The present invention relates to a rotating body that precesses when exposed to wind.

The present applicant has proposed a bell device that swings and makes a sound when it receives wind or light force (Patent Document 1).
The purpose of this technology is that when wind hits the blade-like effecting body or a light force is applied, the sounding body tilts due to that force, and the rolling elements inside roll and produce a sound.Furthermore, the sounding body can be pushed down lightly with a finger. The device was designed to make it easier for the sounding body to produce sound by providing a cradle that can be used.

Furthermore, as a result of prototyping and evaluating various configurations, the inventors found that depending on the conditions of the wind object, etc., movement in the twisting and rotational direction occurs, and the inventors were able to enjoy the changes, leading to the present invention.

Patent No. 6877016

An object of the present invention is to provide a precession body, which is also referred to as a "misosuri motion", in which a rotating shaft generates a force in a torsional rotational direction when exposed to wind, and the rotating shaft periodically moves.

The precession body according to the present invention includes a main body and a wind blower installed upright in the main body, and when the wind blower receives wind, it generates a vector in a torsional rotation direction. The wind blower is characterized in that it precesses when a vector in a twisting rotation direction occurs in the wind body.

Here, the main body stands on its own with the wind receiving body standing upright, and if the wind receiving body receives wind and tilts slightly diagonally, or receives a light force and tilts slightly diagonally, the bottom of the main body It has become clear that when a weight part is generated in the self-supporting direction of the weight part, a vector in the torsional rotation direction is generated.

When the wind object is tilted in this way, a vector in the torsional rotation direction can be generated as long as the wind flows toward the wind object and the flow changes toward the left and right ends of the wind object. .
For example, the wind receiving body may have a sloped surface that becomes thinner from the central portion toward the left and right ends.
In addition, in order to make the main body easily tilt when the wind hits the wind body, inclined surfaces may be provided on both sides of the wind body so as to spread downward from the top.
When the wind receiving body is a flat surface, the width W of the wind receiving surface of the wind receiving body may be equal to or larger than the vertical width H.
When the wind stops at this point, the twisting rotation becomes weaker and it stands still on its own.

In the present invention, in order to induce torsional rotational force in the main body, it is preferable that the bottom of the main body has a convex shape, for example, a spherical shape.

The precession body according to the present invention is characterized by its twisting, rotating motion itself. For example, the main body has a rolling element inside, and when the main body precesses, , the rolling element may roll and hit the internal side wall portion, producing a sound.

When the precession body according to the present invention is tilted by the wind or is tilted by the application of a light force, a vector in the direction of twisting and rotation is generated, so the movement can be enjoyed.

1 shows an example of a precession body according to the present invention. Note that the main body is a rotating body, and a sectional view thereof is shown. It shows the movement of precession in response to the wind, and d shows the ground locus (periodic rotational movement) of the bottom surface of the main body. Side views of the torsionally rotating motion are shown in (a) to (d). Plan views of the torsionally rotating motion are shown in (a) to (d). A modification example of the wind receiving body is shown.

An example of the configuration of a precession body according to the present invention will be described below based on the drawings.
1(a) and 3(a) show front views, and FIG. 1(a) shows a partial cross-sectional view for explaining the inside of the main body.
FIG. 3(a) shows a plan view, and the wind receiving body 12 is a flat body with a symmetrical front and back surface, and the main body is a generally spherical rotating body as a whole.

A wind body 12 is removably attached to the upper part of the main body part 11, which has a convex bottom surface 11a, and can stand on its own as a whole.
The wind body 12 is made of paper, resin, or fabric.
In this embodiment, the main body portion 11 has a substantially spherical shape, but the shape is not limited to the substantially spherical shape as long as the bottom surface 11a has a convex shape.
Furthermore, by changing the curvature of the convex shape, the slope of precession can be adjusted.
The bottom side of the main body part 11 is a weight part 11f, which stands on its own while twisting and rotating.
The main body is preferably made of metal.

In this embodiment, a shaft portion 11c is erected from the upper surface of the weight portion 11f, and a hollow portion 11g is formed around the shaft portion 11f, so that a spherical rolling element 11d is accommodated in this hollow portion.
As a result, when the main body part 11 twists and rotates, the rotor 11d rolls on the rolling surface 11b on the upper surface of the weight part 11f, and when it hits the inside of the side wall part 11e, a sound is produced.
The present invention is characterized in that it twists and rotates while being independent as a whole, and the main body 11 does not necessarily have to have a bell structure.

As shown in the plan view of FIG. 3, the wind receiving body 12 has circular wind receiving surfaces 12A and 12B that are folded in half at the top, and have sloped surfaces that are slightly expanded toward the connecting portion at the bottom. This is an example of what we have.
As shown in FIG. 1, the wind receiving body 12 has a horizontal width W that is equal to or wider than a vertical width H.
When the force of the wind f is applied to the wind receiving body 12, as shown in FIGS. 2 to 4, the central axis D ₀ before receiving the wind tilts due to the wind, and the central axis tilts as shown in D ₁ to D ₃ . The ground contact locus d of the bottom surface of the main body portion 11 twists and rotates while drawing a circular period as shown in FIG.
The magnitude of this ground contact trajectory d changes depending on the strength of the wind.

The wind receiving body 12 may be a decorative body having various shapes such as a butterfly shape as shown in FIG.
Specific examples of the precession body according to the present invention include a bell that makes a sound when a rolling element rolls inside the main body, a ring that makes a sound by hitting the main body with a ring rod, and a wind blowing body that can be used as a decorative object. Examples include a stationary wind chime that twists and rotates by replacing it with a wind chime, and a toy that twists and rotates when gently tilted by hand and then stands still on its own.

11 Main body portion 11a Bottom surface 11b Rolling surface 11c Shaft portion 11d Roller 11e Side wall portion 11f Weight portion 11g Cavity portion 12 Wind receiving body 12a Connection portion

Claims (4)

comprising a main body and a wind receiving body erected on the main body,
The wind receiving body generates a vector in a twisting rotation direction when it receives wind,
The precession body is characterized in that the main body part precesses when a vector in a torsional rotation direction is generated in the wind blowing body. 2. The precession body according to claim 1, wherein the width W of the wind receiving surface of the wind receiving body is equal to or larger than the vertical width H. 3. The precession body according to claim 2, wherein the main body has a convex bottom surface. 4. The precession body according to claim 3, wherein the main body has a rolling element therein, and when the main body precesses, it hits an internal side wall and makes a sound.

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