JP2003190646A - Non-falling top and stand for top - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To realize a continuously standing top without falling even when a rotation stops and a gyro effect disappears. <P>SOLUTION: Ring magnets or small magnet pieces are respectively disposed on a top and a stand for the top to use a resiliency of magnetic forces or an attracting force. One stabilizing means is provided with an inverted conical recessed part for holding the end of a rotation shaft on the center of the stand for the top so that the top stably stands on the stand for the top by the resiliency of the magnets. As other means, a small soft magnetic piece is provided in the end part of the rotation shaft of the top and a small magnet piece is disposed at the central part of the ring magnet on the stand for the top. Thus, the ring magnets on the top and the stand for the top are repellent with each other and the small magnet piece at the center and the soft magnetic piece at the end of the rotation shaft are attracted to each other to ensure a stability. The top is rotated smoothly by the swinging operation of the stand for the top. A molding material is arranged in the top. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a top which applies the repulsion and attractive force of a magnet, and can be used as a toy, an educational article for learning magnetic force, a figurine or a lucky charm.

[0002]

2. Description of the Related Art Conventionally, spinning tops are enjoyed by spinning, but when spinning for a certain period of time, the rotation slows down while fluctuating, and finally falls and falls. Also, even if it could be rotated on a certain table, it sometimes slipped off the table. It was generally recognized that tops would fall when they stopped spinning. On the other hand, a prior art that applies the repulsive force of a magnet is disclosed in Japanese Patent Application Laid-Open No. 8-57157. that is,
With a simple structure consisting only of the repulsive force of the top and the magnet provided on the top of the top and the gyro effect, it is possible to float the top in the air for a certain time while rotating the top. I think that the. However, in order to float in the air, it takes a lot of trial and error to adjust the top and top of the top, and even if the stability condition is set once, there is no reproducibility. was there.
In addition, when the rotation becomes slow and the gyro effect becomes weak, it becomes unstable and falls over and inverts, as in the conventional top. Incidentally, the top disclosed in Japanese Patent Laid-Open No. 8-57157 was released in October 1994 under the trade name of "U-CAS". In the example obtained by the applicant of the present invention and examined, it takes 10 to 30 times to redo until the stable condition is established.
It takes about 15 minutes to about 15 minutes, and the height of about 4 cm from the stand and the time it floats and rotates in the air is from 1 minute to 1.5 minutes.
It was about a minute. The time of floating in the air is determined by the initial number of revolutions, and it seems possible to ascend for about 2 minutes by acquiring high skill. However, when it slowed down, it fell and fell.

[0003]

Conventionally, when a top is rotated, the Coriolis force due to the gyro effect does not work and continues to rotate, but at a certain number of rotations or less, the gyro effect becomes weak and it collapses due to gravity. An object of the present invention is to realize a top that does not fall down even if the rotation stops and the gyro effect disappears. Further, in general, even if the repulsion by the magnets of the top and the top of the top is used, the top is not stable and is inverted and falls in the direction in which the magnetic forces attract each other. An object of the present invention is how to prevent reversal and overturning of the rotation axis of the top while using the repulsive force and attractive force of the magnet with a simple configuration.

[0004]

For example, ring magnets are arranged on the top and the table of the top, and the repulsive force between the ring magnets is used. Furthermore, as one means, an inverted conical recess is provided in the center of the spinning top so that the spinning top can be stably stood by the repulsive force of the magnet on the spinning top, and the tip of the rotating shaft is pointed. Holds and allows its rotation. As another means, for example, a pointed soft magnetic material piece is placed at the tip of the spinning shaft of the top, and a small magnet piece is arranged at the center of the ring magnet of the top of the top. Is repulsed, and the soft magnetic material piece at the tip of the rotary shaft attracts the small magnet piece at the center to ensure stability. Since the tip of the rotary shaft is sharply pointed, the contact resistance is small and it can rotate freely. More specifically, a top having a rotating shaft provided at the center of a ring magnet magnetized in the thickness direction and a ring magnet having a diameter slightly larger than the outer diameter of the top magnetized in a direction repulsing the top are provided. Prepare a top and a table. When the top is placed at the center of the top of the top, a repulsive force is applied, and a rotational force that causes the above rotary shaft to fall is added around the center of the repulsive force (almost the center of gravity of the top). In other words, as shown in FIGS. 9 and 10, since the rotational force is applied to the rotation axis of the top in a plane orthogonal to the rotation surface of the top, the top will fall down as it is. Therefore, the rotational force of the surface orthogonal to the rotational surface of the top is held at the center point of the inverted conical shape of the concave portion to prevent the top from falling while freely rotating the top. On the other hand, the soft magnetic material piece on the lower tip of the rotary shaft and the small magnet piece on the top of the spinning top are attracted together to prevent tipping, and the top of the rotating shaft is sharply pointed to allow the top to rotate freely.

[0005]

With the above structure, even if the spinning top stops rotating, the repulsive force exerted by the ring magnet of the spinning top balances gravity with the retaining force of the concave portion acting on the tip of the spinning shaft of the spinning top, or the magnetic force. With the holding action, you can stand stably without turning over and falling.

[0006]

EXAMPLE Example 1 As shown in FIG. 1, a top 1 and a top table 2 were arranged. The top magnet has an outer diameter of 19 mm and an inner diameter of 4
mm using a first ring magnet 3 made of strontium ferrite with a thickness of 5 mm and having an outer diameter of 3 mm and a length of 5 at the center.
The rotary shaft 4 made of a hard ENVI resin having a sharp tip of 0 mm was adhered with an epoxy adhesive. The distance "h1" between the lower surface of the first magnet 3 and the tip of the rotating shaft was set to 16 mm so that it would not float or fall. The top 2 of the top is magnetized in the thickness direction to repel the top magnet and has an outer diameter of 33 mm ×
A second ring magnet 5 made of strontium ferrite and having an inner diameter of 22 mm and a thickness of 5 mm was adhered and fixed to the base body 6 with a rubber adhesive. The recess 7 of the base body 6 has an outer diameter of 18 m.
The top of the rotating shaft 4 of the top 1 is held in the center of the concave portion with an inverted cone shape of m and a depth of 7 mm. In this configuration, the top 1 can be rotated obliquely by shifting the center of the second ring magnet 5 and the center of the recess 7. In addition, the magnet with a high energy product strengthens the repulsive force, and by devising the design by keeping the distance between the first ring magnet and the top of the top, the effect of reducing the weight of the top by the repulsive force of the magnet causes the rotation duration time to increase. Can be made longer. In the arrangement shown in FIG. 1, when the top 1 is twisted and rotated, the top continues to rotate, and eventually the rotation slows down and stops rotating, but the top 1 remains stable and does not fall down. Continued to hold. The distance between the first ring magnet and the second ring magnet has an optimum distance for stabilizing the top due to the energy product of the magnets. In addition, the stability of the top depends on the difference in diameter between the first ring magnet and the second ring magnet, the depth of the upper surface of the second ring magnet and the center of the recess, and the like. Incidentally, as shown in FIG. 1, the first magnet 3 is arranged in the upper frame 16 and the lower frame 17 of the top, which produces a preferable effect in terms of design.

Example 2 As shown in FIG. 2, a top 8 and a top table 9 are arranged. The top magnet is a strontium ferrite first ring magnet 10 having an outer diameter of 29 mm, an inner diameter of 5 mm, and a thickness of 5 mm, and an outer diameter of 3.5 mm at the center.
× A rotating shaft 11 made of a stainless pipe having a length of 60 mm was adhered with an epoxy adhesive. At the lower tip of the rotating shaft,
Pointed iron outer diameter 3.5mm / 2.2mm length 10
The 2.2 mm portion of the outer diameter of the first soft magnetic material piece 15 of mm was inserted and adhered with an epoxy adhesive. Distance “h2” between the lower surface of the first ring magnet and the tip of the soft magnetic piece 15.
Was set to 22 mm. The top 9 of the top is magnetized in the thickness direction to repel the magnet of the top and has an outer diameter of 44 mm x an inner diameter of 22 mm x
Two second ring magnets 12 made of strontium ferrite having a thickness of 6.7 mm were aligned in the magnetizing direction and bonded to the base body 14 with a rubber-based adhesive to be fixed. A second small magnet piece 13 made of neodymium iron boron having an outer diameter of 5 mm and a thickness of 5 mm is adhered to the central portion of the base body 14 with a rubber adhesive, and the first end of the rotary shaft 11 of the top 8 is attached. The soft magnetic material piece 15 is held by an attractive force. The top of the top of the top is a flat surface, and the top of the top is on a flat surface. When the magnetizing direction of the second small magnet piece 13 is set to be the same as that of the second ring magnet 12, the repulsive force to the top 8 is increased, and a preferable result is obtained. In the arrangement shown in FIG. 2, when the top 8 is twisted and rotated, the top continues to rotate, and then the rotation is slowed down and stops rotating, but the top 8 does not fall and is placed on a plane above the top 9 of the top. He kept a stable standing position. FIG. 5 shows the arrangement of the ring magnets as seen from the top of the second embodiment.

Example 3 With a structure similar to that of Example 2, the same effect could be obtained even if the top surface of the spinning top had a convex surface to some extent as shown in FIG. Distance “h” between the upper surface of the second ring magnet and the lower surface of the first ring magnet
In order to increase "3", the magnetic force of the second ring magnet needs to be increased. In this example, three second ring magnets 12 were used. FIG. 4 shows a perspective view of the third embodiment.

Embodiment 4: It is obvious that the present invention can be implemented by a magnet piece which has substantially the same structure as the above-mentioned Embodiments 1, 2 and 3 and which is arranged rotationally symmetrically without using a ring magnet, for example. Is. FIG. 6 shows a simplified arrangement of the magnet pieces of the spinning top as viewed from above. The magnet piece can be realized by a structure in which it is divided into a plurality of pieces or by a single magnet piece.
It can be constructed using inexpensive magnet pieces that are mass-produced. However, it was preferable that either the top or the top of the top be a ring magnet in order to ensure the uniformity of the repulsive force with rotation.

Embodiment 5: As shown in FIG. 7, a convex portion 19 is provided at the center of the back surface of the spinning top, and a concave portion 21 for receiving the convex portion 19 is provided at the upper center of the bottom plate 20 of the spinning top. It was In addition, the spring 22 having a weak elastic force is arranged to mount the base body 6
I tried to keep it horizontal. In this way, the fluctuation due to the deviation of the rotational balance of the top is absorbed by the shaking of the top of the top. As a result, even if there is a slight discrepancy in the top rotation balance,
By swinging the top of the top in conjunction with the top, it is possible to maintain smooth rotation by reducing unnatural swinging of the shaft. FIG. 8 shows an example of the configuration of the third embodiment. When the position of the fulcrum of the top is higher than the center of gravity of the top (including the movement of the center of gravity due to the weight of the top), the top of the top is stable according to the Yagiro Bay principle and the spring 22 can be omitted. Came. The effect of Example 5 was observed even when the rotational balance of the top was completely adjusted.

As a result of various studies on the stability of the top, in the configuration of FIG.
If the weight of the top is 27 and the top is not tilted, the relation between the angle θ1 of the inverted conical concave portion and the angle θ2 of the fall rotation force acting on the rotation axis of the top may be set to θ1 <θ2. It was important. Further, in the configuration of FIG. 10, it is important that the attraction force 28 of the second small magnet piece is larger than the difference 29 between the repulsive force and the weight of the top under the condition of the repulsive force 23 acting on the top> the weight 27 of the top. Met.

Embodiment 6 As shown in FIGS. 11, 12, and 14, for example, a doll 31a and lucky shaped objects 32a and 32b.
It was found that by applying the above to the top magnet of the present invention, the application as an exhibit or a figurine can be expanded. In FIG. 11, the ballerina doll 32a is placed on the top magnet of Example 2 and the costume is expanded when rotated. FIG. 12 shows the "gold" character 32a.
Was placed at 120 ° to the axis of rotation. When you rotate the top, you can see the letters better from any side. In FIG. 14, the shape of the modeled object is changed by the centrifugal force caused by the rotation of the top. For example, the character 32b of "happy" is designed, and the character is opened by centrifugal force to give an image of "the happiness spreads". Specifically, for example, as shown in FIG. 13, when the character 32b of "lucky" is formed and the rotation is stopped, even if the top is rotated as shown in FIG. ), The character of "lucky" will open. As described above, I was able to combine the image of a top that does not collapse, the rotating model, and the model that does not collapse by standing at one point. Although the embodiments of the present invention have been described in detail above, it is obvious that the configurations and dimensions thereof do not limit the scope of the invention and are merely examples thereof.

[0013]

According to the present invention, even if the rotation of the top is stopped with a simple structure, it does not fall on a small table without falling. You can enjoy it as a handy toy without the skill of spinning the top. In addition, since it is common for tops to fall when rotation stops, it is a mysterious exhibit, and as a mysterious exhibit, students before the entrance examination, company managers, entrepreneurs, office workers, self-employed people, housewives, and many others. It can be expected to be effective as an auspicious item that gives people courage. On the other hand, it is effective as an educational product that considers the mystery of magnets because it uses the force that attracts the repulsion of magnetic force so that it will not fall over. Marks and patterns can be placed on the top and top of the top, and fortune-telling can be done at the position where the top stops. It can also be used as a magic trick.
With the configuration of the present invention, for example, a doll, a good luck-related item, or other decorative shaped object can be easily applied to make it an exhibit that does not stand upright at one point, or can be enjoyed by rotating it.

[0014]

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a structure of a top that does not fall and a base of the top according to the first embodiment. FIG. 2 is a cross-sectional view showing the structure of a top that does not collapse and a table for the top according to the second embodiment. Figure 3
FIG. 8 is a cross-sectional view showing a configuration of a top that does not fall and a base of a top according to a third embodiment. FIG. 4 is a perspective view showing a configuration of a top that does not fall and a base of the top according to the third embodiment. FIG. 5 is a layout view of the ring magnets seen from the upper side according to the second and third embodiments. FIG. 6 is a layout view of the magnet pieces as seen from above according to the fourth embodiment. 7 and 8 are cross-sectional views of a top that does not fall and a base of the top according to the fifth embodiment. 9 and 10 are diagrams for explaining the stabilizing principle of the present invention. 11, 12,
[Fig. 4] is a side view in which a doll and characters are arranged on a top magnet. FIG. 13 is a configuration diagram of a character of "Sachi" which is opened by centrifugal force when rotated. FIG. 14 is a side view in which the letters “Sachi” are arranged on the top magnet and rotated.

[Explanation of symbols]

1: Top, 2: Top of the top, 3: First ring magnet, 4 rotation shaft, 5: Second ring magnet, 6: Main body, 7: Recess,
8: Top, 9: Top base, 10: First ring magnet, 1
1: rotating shaft, 12: second ring magnet, 13: second small magnet piece, 14: stand body, 15: first soft magnetic piece, 1
6: Upper frame of top, 17: Lower frame of top, 18: Second magnet piece, 19: Convex part, 20: Bottom plate, 21: Recessed part, 22: Spring, 23: Repulsive force, 24: Repulsion center, 25 : Rotating surface of fall, 26: Rotating force of fall, 27: Weight of top, 28: Force of attracting second small magnet piece, 29, 30: Difference between repulsive force and weight of top, 31: Top with doll Magnet, 31a: Doll, 32: Top magnet with shaped object, 32a: "Gold" character, 32b: "Sachi" character

Claims (5)

[Claims] 1. A first ring-shaped magnet magnetized in the thickness direction,
Alternatively, in a top having a rotational axis provided at the center of a rotationally symmetrical magnet piece, a second ring magnet magnetized in a direction repulsing the top, or a top of a top having a rotationally symmetrical magnet piece, A top that does not fall and a top that has a structure that allows the rotation shaft to rotate freely and prevents it from falling over at the center of the top. 2. The top and the top of the top of claim 1, wherein the top of the top of the top is provided with an inverted conical recess for receiving the tip of the rotating shaft of the top. 3. A first soft magnetic piece or a small magnet piece is provided on at least the lower tip of the rotary shaft so that the lower tip of the rotary shaft is attracted by magnetic force at the center of the top of the spinning top. The top of an unstretchable top and the top of claim 1, wherein a second small magnet piece or a soft magnetic piece is provided on the base. 4. The top of the top is swayed back and forth and left and right with its center as a fulcrum, so that the fluctuations caused by the rotation of the top are absorbed by the top of the top. The top not to fall and the table of the top according to claim 1, 2, or 3. 5. A shape is arranged on the main body or rotating shaft of the top, or the shape is changed by a centrifugal effect or a visual effect by the rotation of the shape. The tops and the tops that cannot be collapsed as described in 1, 2, 3, and 4.