JP2005057921A - Magnetically driven device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain a magnetically driven device that consumes less energy, is highly efficient, and obtains driving force using a simple structure. <P>SOLUTION: The magnetically driven device is provided with at least a pair of rotary members H, in which a plurality of magnets M are disposed at equal intervals along their peripheral edges, at a predetermined interval. A pair of the rotary members H are so constituted that they can be rotated synchronously in the opposite directions so that the magnets M in the same pole disposed on the respective rotary members are opposed to each other. The magnetically driven device is provided with a movable magnetic shield that blocks magnetic force exerted between magnets M on either rotary member H and magnets M on the other rotary member H, and a turning force applying means that applies turning force to the rotary members H by the magnetic force of the magnets M. The movable magnetic shield varies the state of blocking the magnetic force of the closest portions of the rotary members H and the portions in proximity thereto. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a magnetic driving apparatus that obtains a driving force by using a magnetic force of a magnet and a magnetic shield.

  Drive devices such as motors are required to save energy and increase efficiency due to environmental problems. For this reason, attention has been focused on drive devices that use permanent magnets in an auxiliary manner, for example, magnetic motors. In addition, since the magnet type motor is non-contact, compared with the conventional winding type motor, it is possible to reduce the noise and labor required for maintenance, and to reduce the size and weight. Magnet motors are used in household appliances, elevators, electric vehicle drives, electric vehicles, and the like.

However, the above-described magnet type motor or the like generally uses a permanent magnet as an auxiliary, and does not obtain a driving force using these magnetic forces. Further, other electrical energy is required, but there is room for improvement in the amount of energy consumed and energy efficiency for these energies.
The present invention has been made in view of the above problems, and an object of the present invention is to obtain a magnetic driving device that can obtain a driving force with low energy consumption, high efficiency, and a simple structure.

[Characteristic configuration 1]
In order to achieve this object, the first characteristic configuration of the magnetic drive device according to the present invention includes at least one pair of rotating members arranged at equal intervals along the outer peripheral edge at a predetermined interval. The pair of rotating members are configured to be capable of synchronous rotation in opposite directions so that the same-polarity magnets disposed on the respective rotating members face each other, and the magnet of one rotating member and the other rotating member A movable magnetic shield that shields the magnetic force acting between the magnet and the rotational force imparting means that imparts a rotational force to the rotating member by the magnetic force of the magnet. It is in the point which changes the shielding state of the magnetic force of the nearest part of members and its vicinity.

  The rotating member here is preferably a circular plate-like member in order to obtain a good rotation state, but may be a polygonal or gear-like plate-like member or a shape such as a sphere. May be. In addition, if the magnet installed in a rotation member uses the magnet which has substantially the same magnetic force, and the distance from the rotation center of a rotation member is all comprised the same, a favorable rotation state can be obtained. Furthermore, in order to take out the magnetic force of the magnet with high efficiency, it may be installed so that only the surface of the rotating member is exposed.

  According to this characteristic configuration, a pair of rotating members are arranged at an interval at which a movable magnetic shield can be installed, and a rotational force in a predetermined direction is applied to the rotating members by the rotational force applying means. A pair of rotating members are rotated by intermittently changing the shielding state of the magnetic field in the closest part and the vicinity thereof using a movable magnetic shield. Specifically, while applying the rotational force by the rotational force applying means, bringing the opposing magnets close to each other, and driving the movable magnetic shield to generate a repulsive force between the adjacent magnets to separate them. By repeating, the pair of rotating members are rotated.

  Therefore, the number of rotations of the rotating member can be arbitrarily controlled by the drive control of the movable magnetic shield, and at least one pair of the rotating members are driven simultaneously by one movable magnetic shield. A magnetic drive device can be realized.

[Characteristic configuration 2]
In the second characteristic configuration, the rotational force applying means is made of a ferromagnetic material and is formed in a shape along the outline of the rotating member, and the distance from the rotating member is farther away from the closest part. The point is that it is configured to be large.

  According to this characteristic configuration, the rotational force applying means is formed of a ferromagnetic material, and rotational driving of the rotating member is assisted by using the attractive force between the rotational force applying means and the magnet of the rotating member. In general, since the ferromagnetic material and the magnet attract each other, the magnet tends to be closer to the rotational force applying means by the attractive force between the magnet and the rotational force applying means. That is, by configuring the rotational force applying means to be farther away from the closest part, the magnet of the rotating member moves toward the closest part so as to be closer to the rotational force applying means. Thus, rotational force can be obtained. Therefore, by using the attractive force between the magnet and the movable magnetic shield as the driving force, it is possible to realize a magnetic driving device that can obtain driving energy with higher efficiency.

[Characteristic configuration 3]
The third characteristic configuration is that the rotational force applying means and the movable magnetic shield are soft magnetic bodies.

  If the rotational force applying means and the movable magnetic shield are made of a soft magnetic material as in this feature configuration, the soft magnetic material is difficult to be magnetized. Or repulsive force is not produced and rotation of a rotation member is not inhibited. Further, it is possible to more appropriately avoid the problem that the movable magnetic shield is magnetized and an attractive force is generated between the movable magnetic shield and the driving force necessary to drive the movable magnetic shield increases. In particular, when the rotational force imparting means and the movable magnetic shield are made of soft iron, which is a soft magnetic material, the soft iron is generally soft and has high extensibility, so it can be easily processed into an arbitrary shape. Becomes easy. Therefore, by using a soft magnetic material, driving can be easily performed with less force, and formation of a rotational force applying means and a movable magnetic shield is facilitated.

[Characteristic configuration 4]
In the fourth characteristic configuration, the rotational force applying means is configured to be rotatable, and the contour shape of the cross section that maximizes the cross-sectional area in the direction perpendicular to the rotational axis of the rotational force applying means is formed in a spiral shape. In addition, the movable magnetic shield is provided in a portion having the spiral outline.

  According to this characteristic configuration, for example, the rotational force applying means is configured to be rotatable between a pair of rotating members. Specifically, the section of the rotational force applying means that is disposed at the closest portion between the rotating members is formed in a spiral shape. When the rotational force applying means is rotated, the outer edge portion of the rotational force applying means moves in and out of the pair of rotating members. Rotate in the direction in which the movable magnetic shield enters the contact. Immediately after the magnet reaches the closest part, the shield is released. When the shield is released, a rotational force is applied by a repulsive force acting between the magnets, and the rotating member continues to rotate. Therefore, by rotating the movable magnetic shield, the shield can be set and released repeatedly and continuously, and the rotating member can be rotated.

[Feature 1]
In order to achieve this object, the first characteristic means of the magnetic drive method according to the present invention comprises at least one pair of rotating members having a plurality of magnets arranged at equal intervals along the outer peripheral edge. The pair of rotating members are configured to be capable of synchronous rotation in opposite directions so that the same-polarity magnets arranged on the respective rotating members face each other, and the magnet of one of the rotating members and the other of the rotating member A magnet having a movable magnetic shield for shielding a magnetic force acting between the rotating member and the magnet, and applying a rotating force to the rotating member by a rotating force applying means for applying a magnetic force to the magnet. Immediately after reaching the position where they are closest to each other, the movable magnetic shield is driven to cause repulsive force to act on the magnets having the same polarity to rotate the rotating member, thereby driving the movable magnetic shield. In Rukoto, it is maintaining the rotation of said rotary member is caused to act alternately to each other and attractive and repulsive forces of the magnet.

  That is, according to the first characteristic means of the magnetic driving method according to the present invention, the attractive force and the repulsive force acting on each rotating member are controlled by driving the movable magnetic shield. Therefore, by appropriately driving the rotational force applying means, it is possible to realize a magnetic driving method capable of obtaining a driving force with a simple structure.

  Embodiments of a magnetic drive device according to the present invention (hereinafter, appropriately abbreviated as “device of the present invention”) will be described with reference to the drawings.

A first embodiment of a magnetic drive device 1 according to the present invention will be described with reference to FIGS. The device of the present invention comprises two plate-like rotating members H in which a plurality of identical magnets M are arranged at the outer peripheral end, and a main body G in which a rotational force applying means and a magnetic shield are integrally formed. Here, FIG. 1 is a cross-sectional view in the surface direction of the plate-like rotating member H, and FIG. 2 is a cross-sectional view of a surface perpendicular to the Y axis including the end portion GL of the main body portion G in FIG.
The magnetic drive device 1 according to the present invention applies a rotational force to the plate-like rotary member H by the rotational force applying means that applies an attractive force by the magnet M, and immediately after the magnets having the same polarity reach the closest position to each other, Driving the magnetic shield causes repulsive force to act on the magnets M of the same polarity to rotate the plate-like rotating member H, and further driving the magnetic shield causes the attractive force and repulsive force of the magnet M to alternate with each other. The rotation of the plate-like rotating member H is maintained by acting.

  As shown in FIG. 1, the plate-like rotating member H of the present embodiment is a circular plate-like rotating member having a radius of 125 mm, for example, and is configured such that the two plate-like rotating members H rotate in synchronization with each other. Has been. The plate-like rotating member H is installed on the same plane so as not to contact each other with the end portion GL of the main body portion G interposed therebetween. The two plate-like rotating members H are closest to each other on an axis connecting the rotation centers of each other, that is, the Y axis in the figure.

  The magnets M arranged on the plate-like rotary member H are permanent magnets such as rare earth magnets and ferrite magnets, and as shown in FIGS. Is arranged. The magnet M is, for example, a cylinder having a diameter of 10 mm and a height of 5 mm, and is embedded in the plate-like rotating member H so that its bottom surface, that is, the magnetic pole surface is exposed from the plate-like rotating member H. All the magnets M are installed with the north pole facing outward.

  As shown in FIG. 2, the cross-sectional shape including the end portion GL is formed in a substantially logarithmic spiral shape so that the distance between the rotation center and the outline gradually decreases in the clockwise direction from the end portion GL. The part which enters between the plate-shaped rotating members H including the end GL constitutes a magnetic shield. The main body G is configured to be rotatable around a rotation axis parallel to the Y axis. A circle P in FIG. 2 shows the closest part of the plate-like rotating member H, and is a position that passes through the Y axis in FIG. The shortest distance between the rotation axis of the main body G and the outline is shorter than the radius of the circle P, and the longest distance is longer than the radius of the circle P.

  As shown in FIGS. 1 and 2, the main body G is configured such that the end GL extends beyond the closest part of the two plate-like rotating members H and the Y axis in FIG. 1. This is because if a repulsive force is generated in a state where the position of the magnet M exceeds the Y axis in the rotation direction, a component force acts in that direction, and rotation can be reliably maintained. The length that extends beyond the Y axis is such that the magnet M can reach a position beyond the Y axis.

  The main body G of this embodiment is made of a ferromagnetic material, particularly soft iron, which is a soft magnetic material, and attracts the magnet M. Furthermore, the main body G of the present embodiment is configured so as to form a rotational force applying means so that the distance from the plate-like rotating member H becomes farther away from the end portion GL in accordance with the shape of the plate-like rotating member H. Form. Although the size of the main body G can be arbitrarily set, it may be any size as long as the rotational force can be favorably applied to the plate-like rotating member H. Further, the thickness of the end portion GL is set to a thickness necessary for shielding the repulsive force acting between the plate-like rotating members H of the magnet M. Here, the thickness L1 of the end portion GL of the present embodiment is 1.5 mm, the interval L2 between the end portion GL and the plate-like rotating member H is 0.3 mm, and the space between the plate-like rotating member H and the main body portion G is The maximum width L3 of the interval is 10 mm.

  In this embodiment, 16 magnets M are installed, but the present invention is not limited to this. Considering the size of the plate-like rotating member H, the repulsive force between the magnets M, the attractive force with the main body G, and the like, an appropriate number of magnets M are installed.

(Rotation operation)
Next, operations of the main body G and the plate-like rotating member H will be described with reference to FIGS. Here, for the sake of explanation, it is assumed that the magnet M at the position A in the vicinity of the closest part is the magnet M1. The magnet M1 moves from the position A to the position B counterclockwise as the main body G rotates. The white circle in FIG. 2 represents the movement locus of M1.

  In the present embodiment, as shown in FIG. 1, the magnet M <b> 1 to the magnet M <b> 6 move closer to the closest portion so that the magnet M <b> 1 is closer to the main body G due to the attractive force acting between the magnet M <b> 1 to the magnet M <b> 6 and the main body G. The magnet M1 moves to the vicinity of the outline of the main body G, that is, the vicinity of the closest part. Thereby, a rotational force is applied to the plate-like rotating member H.

  As shown in FIG. 2, when the main body G is rotated clockwise, the end GL approaches the X axis in FIG. 2, and the magnet M1 moves toward the nearest part from a distance. When the main body G is further rotated, the end GL of the main body G enters between the two plate-like rotating members H along the X axis, and a repulsive force is generated between the two plate-like rotating members H. To prevent. The magnet M1 moves as it enters due to the attractive force with the main body G, and moves the plate-like rotary member H in the direction of the arrow shown in FIG. 1, ie, the upper plate-like rotary member H counterclockwise, and the lower plate The rotating member H is rotated clockwise. Further, when the main body G rotates clockwise, the shielding amount becomes maximum when the end GL passes between the two plate-like rotating members H. At this time, the magnet M <b> 1 comes to a position B that is farther away from the rotation axis of the main body part G than the closest part due to the attractive force with the main body part G. When the end portion GL passes through the closest portion, the shield is released, a repulsive force acts between the magnets M1 of the two plate-like rotating members H, and the magnets M1 move in a direction away from each other in synchronization. Thereby, the rotation state of the plate-like rotation member H is maintained.

  In this embodiment, the plate-like rotating member H rotates by 1/16 of the magnet M by one rotation of the main body G, in this embodiment. The rotational speed of the plate-like rotating member H is obtained by dividing the rotational speed of the main body G by the number of magnets M installed on the plate-like rotating member H.

  A second embodiment of the magnetic drive device 1 according to the present invention will be described with reference to FIG. FIG. 3 is a cross-sectional view of a surface perpendicular to the Y axis including the end portion GL of the main body G. In the first embodiment, only one end portion GL is formed. Part GL is formed. When configured in this way, the plate-like rotating member H is rotated by two magnets M by one rotation of the main body G.

  The number of end portions GL to be formed is not limited to the first embodiment and the second embodiment described above, and any number can be manufactured. The amount of rotation of the plate-like rotating member H is the number of rotations of the main body portion G. It is obtained by adding the number of end portions GL to the value divided by the number of magnets M installed on the plate-like rotating member H.

  A third embodiment of the magnetic drive device 1 according to the present invention will be described with reference to FIG. In the present embodiment, a set of a plurality of plate-like rotating members H is arranged so as to surround the main body G with respect to one main body G. With such a configuration, a set of a plurality of plate-like rotating members H can be simultaneously driven by the same rotation of the main body G. That is, more driving force can be obtained in proportion to the number of installed plate-like rotating members H.

  A fourth embodiment of the magnetic drive device 1 according to the present invention will be described with reference to FIG. In the present embodiment, a set of a plurality of plate-like rotating members H in which the rotation center of the corresponding plate-like rotating member H is configured coaxially with respect to one main body G is installed. In this embodiment, the main body G is not circular but is formed in a substantially columnar shape. Further, in order to be able to change the shielding state in the vicinity of the closest part of the two plate-like rotating members H, the end portion GL has a continuous shape of uneven portions, for example, a rectangular shape as shown in FIG. A plurality of identical notches are formed in a shape in which a plurality are provided at equal intervals. When the main body G is slid in the axial direction of the plate-like rotating member H, a repulsive force acts intermittently between the two plate-like rotating members H, and the plate-like rotating member H can be rotated. it can. The shape of the notch is not limited to a rectangle, but may be a trapezoid or the like. By configuring in this way, similarly to the third embodiment described above, a set of a plurality of plate-like rotating members H is simultaneously driven by the operation of one main body G, and is proportional to the number of plate-like rotating members H. The driving force can be obtained.

  A fifth embodiment of the magnetic drive device 1 according to the present invention will be described with reference to FIGS. In the present embodiment, as shown in FIGS. 6 to 7, body portions G are formed on the upper and lower surfaces of the disk. In the main body G, a rotational force applying means and an end GL are formed in this order from the surface of the disk, and the space between the main body G and the disk becomes hollow in order to reduce the driving force by reducing the weight. It is configured as follows. Furthermore, in this embodiment, the end portions GL are formed at a total of four locations on the upper and lower surfaces. A plurality of plate-like rotating members H are installed for each of the main body portions G on the upper and lower surfaces of the disk.

  When this disk is rotated, the main body portions G formed on the upper and lower surfaces of the disk are rotated together, and a set of a plurality of plate-like rotating members H is rotated synchronously with this rotation. The plate-like rotating member H obtains the number of rotations proportional to the number of rotations of the main body part G and the number of end portions GL formed on the main body part G. Therefore, since the entire driving force obtained from the plate-like rotating member H in this embodiment is proportional to the number of the plate-like rotating members H, the driving force can be efficiently obtained by rotating the main body G. It is. In this embodiment, the end portions GL are formed at a total of four locations on the top and bottom surfaces, but the present invention is not limited to this, and any number can be formed.

In the first embodiment to the fifth embodiment, the plate-shaped rotating member H having a circular bottom surface is used as the pair of rotating members, but the present invention is not limited to this. A shape such as a sphere or a concave lens may be used instead of a plate-like member as long as good rotation can be obtained.
Moreover, although the magnetic drive device 1 concerning this invention is arrange | positioned with the same magnetic pole facing the radial outward direction, it is not restricted to this. As long as the plate-like rotating member H is synchronously rotated, the magnets having the same polarity may be arranged so as to face each other, and the arrangement method is arbitrary. For example, the magnet M can be used as a power generator by disposing the magnet M alternately with different magnetic poles in the radially outward direction and arranging a coil around it.
Furthermore, if a pattern is given to the plate-like rotating member H, it can also be used as a decorative article.

Sectional drawing of the magnetic drive device concerning this invention Sectional drawing of the magnetic shield concerning this invention Sectional drawing of the magnetic shield concerning this invention The perspective view which shows one Example of the magnetic drive device concerning this invention The perspective view which shows one Example of the magnetic drive device concerning this invention The perspective view which shows one Example of the magnetic drive device concerning this invention The front view which shows one Example of the magnetic drive device concerning this invention

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Magnetic drive device M Magnet H Plate-shaped rotation member G Main-body part GL End part

Claims (5)

The rotating member having a plurality of magnets arranged at equal intervals along the outer peripheral edge is provided with at least one pair at a predetermined interval, and the pair of magnets arranged on each rotating member are opposed to each other. And a movable magnetic shield configured to shield a magnetic force acting between the magnet of one of the rotating members and the magnet of the other rotating member. A rotational force applying means for applying a rotational force to the rotating member by the magnetic force of
The magnetic drive device in which the movable magnetic shield changes the shielding state of the magnetic force at the closest part of the rotating members and in the vicinity thereof.   The rotational force applying means is made of a ferromagnetic material and is formed in a shape along the contour of the rotating member, and is configured such that the distance from the rotating member increases as the distance from the closest portion increases. Item 2. The magnetic drive device according to Item 1.   The magnetic drive device according to claim 1, wherein the rotational force applying means and the movable magnetic shield are soft magnetic materials.   The rotational force applying means is configured to be rotatable, and a cross-sectional contour shape that maximizes the cross-sectional area in the direction perpendicular to the rotational axis of the rotational force applying means is formed in a spiral shape. The magnetic drive device according to any one of claims 1 to 3, wherein the movable magnetic shield is provided in a portion having the following contour shape. The rotating member having a plurality of magnets arranged at equal intervals along the outer peripheral edge is provided with at least one pair at a predetermined interval, and the pair of magnets arranged on each rotating member are opposed to each other. And a movable magnetic shield that shields the magnetic force acting between the magnet of one of the rotating members and the magnet of the other rotating member. And
Applying a rotational force to the rotating member by a rotational force applying means for applying an attractive force by the magnet;
Immediately after reaching the position where the magnets of the same polarity are closest to each other, the movable member is driven to rotate the rotating member by applying a repulsive force to the magnets of the same polarity by driving the movable magnetic shield.
A magnetic drive method for maintaining the rotation of the rotating member by driving the movable magnetic shield to cause the magnet's attractive force and repulsive force to act alternately.

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