Magnetic rotation device and power generation device incorporating same

Abstract

A magnetic rotation device according to the present invention is provided with the following: rotor-side magnetic force blocking plates 42 that block the magnetic force of first bar magnets 66 on a downstream surface, as viewed from the direction of rotation of a rotor 34, of an outward-facing surface 66A, which is the surface of the first bar magnet 66 of a rotor-side magnet section 38 that faces a second bar magnet 70 of a fixed-side magnet section 40; and fixed-side magnetic force blocking plates 44 that block the magnetic force of the second bar magnets 70 on an upstream surface, as viewed from the direction of rotation of the rotor 34, of an inward-facing surface 70A, which is the surface of the second bar magnet 70 of the fixed-side magnet section 40 that faces the first bar magnet 66 of the rotor-side magnet section 38. Also provided are: a first auxiliary magnet 78 in a gap 64 formed between adjacent first bar magnets 66 of the rotor-side magnet section 38 and in a gap 68 formed between adjacent second bar magnets 70 of the fixed-side magnet section 40; second auxiliary magnets 80 that at least conceal the magnetic pole portion on the opposite side from the outer magnetic pole of the first bar magnets 66 and the magnetic pole portion on the opposite side from the inner magnetic pole of the second bar magnets 70, respectively; and third auxiliary magnets 82 that at least conceal the magnetic pole portion of the magnetic pole on the inner side, in the radial direction, of the second auxiliary magnets 80 on the rotor side and the magnetic pole portion of the magnetic pole on the outer side, in the radial direction, of the second auxiliary magnets 80 on the fixed section side, respectively. This arrangement allows for effective extraction of positive energy, i.e., the repulsive force between the magnets that rotate the rotor, with a simple configuration.

Description

Magnetic rotating device and power generating device incorporating the same

[0001] The present invention relates to a magnetic rotating device and a power generating device incorporating the same, and more particularly to a magnetic rotating technology that utilizes the repulsive force generated by the magnetic force between magnets for rotation.

[0002] Permanent magnet motors and generators are well-known examples of applications of magnetic rotating devices that use the repulsive force generated by the magnetic attraction between magnets to rotate the rotor. A typical magnetic rotating device uses the repulsive force generated when the opposing magnets on the rotor and fixed side have the same magnetic poles to rotate the rotor.

[0003] However, the repulsive force caused by magnetic poles of the same polarity becomes positive energy that promotes rotor rotation when the rotor-side magnet and the fixed-side magnet move apart as the rotor rotates, but becomes negative energy that hinders rotor rotation when they approach each other. Also, because magnets have north and south poles, in addition to the repulsive force caused by magnetic poles of the same polarity, an attractive force caused by magnetic poles of different polarity also occurs. Therefore, in order to increase the rotational force of a magnetic rotating device, it is important to effectively extract only the repulsive force, i.e., only positive energy, that occurs when the rotor-side magnet and the fixed-side magnet move apart as the rotor rotates.

[0004] To solve this problem, for example, a magnetic rotating device is proposed in Patent Document 1. The magnetic rotating device in Patent Document 1 includes a rotating shaft, a rotor with multiple magnets arranged at the end of the outer periphery with their magnetic poles aligned radially, a stator with the same number of magnets as the rotor magnets arranged radially opposite the rotor magnets, a magnetically shielded rotor with slits and shielding plates made of ferromagnetic material arranged alternately, a rotor detection sensor located near the rotor, and a magnetically shielded rotor detection sensor located near the magnetically shielded rotor. The rotor detection sensor and the magnetically shielded rotor detection sensor then insert the magnetically shielded rotor between the rotor magnets and the stator magnets at the appropriate time. This artificially creates an imbalance between the repulsive and attractive forces between the rotor magnets and the stator magnets, minimizing the rotational energy acting in the negative direction of the rotor rotation and extracting the magnetic force as rotational energy.

[0005] JP 2014-200159 A

[0006] However, the method of inserting the magnetically shielded rotor between the rotor magnet and the stator magnet at the right time using a rotor detection sensor and a magnetically shielded rotor detection sensor, as in the magnetic rotating device of Patent Document 1, has the drawbacks of being mechanically complex and prone to timing errors due to the detection accuracy of the sensors, etc. When timing errors occur, it is not possible to effectively extract the repulsive force, i.e., positive energy, when the rotor magnet and the stator magnet separate.

[0007] Furthermore, magnets have north and south poles, and in addition to the repulsive force caused by magnetic poles of the same polarity, an attractive force is also generated by magnetic poles of different polarity. Therefore, simply inserting a magnetically shielded rotating body between the rotor magnet and the stator magnet cannot effectively extract the repulsive force that occurs when the magnet on the rotor side and the magnet on the stator side separate as the rotor rotates.

[0008] The present invention has been made in consideration of the above circumstances, and aims to provide a magnetic rotating device that has a simple structure yet can more effectively extract the repulsive force that occurs when the magnets on the rotor side and the magnets on the fixed side separate as the rotor rotates, i.e., the positive energy that promotes rotor rotation, and a power generating device incorporating the same.

[0009] To achieve the above object, the present invention provides a magnetic rotating device that uses the magnetic force of a magnet as a rotational force, comprising: a rotating shaft that is rotatably supported; a circular rotor that is fixed to the rotating shaft and rotates around the axis of the rotating shaft; a fixed part that is fixed to a device frame and is provided outside the rotor so as to surround the rotor, and has an inner circumferential surface that is concentric with the rotor; and a plurality of first bar magnets, the first bar magnets being arranged on the outer circumferential surface of the rotor to form equally spaced gaps along the rotation direction of the rotor, and the magnetization direction of the first bar magnets being aligned with the axis of the rotating shaft. a rotor-side magnet section that is arranged along a radial direction perpendicular to the rotor axis and arranged so that the outer magnetic poles of the first bar magnets on the outside in the radial direction all have the same polarity; and a fixed-side magnet section that is made up of a plurality of second bar magnets, the second bar magnets being arranged on the inner peripheral surface of the fixed section to form equally spaced gaps in the circumferential direction, the magnetization directions of the second bar magnets being arranged along a radial direction perpendicular to the axis of the rotating shaft, and the inner magnetic poles of the second bar magnets that face the rotor-side magnet section have the same polarity as the outer magnetic poles. Of the outer opposing surfaces of the fixed-side magnet section, which are surfaces that face the second bar magnet, a rotor-side magnetic force shielding plate is provided on the downstream surface as viewed from the direction of rotation of the rotor, which shields the magnetic force of the first bar magnet. Of the inner opposing surfaces of the second bar magnet of the fixed-side magnet section, which are surfaces that face the first bar magnet of the rotor-side magnet section, a fixed-side magnetic force shielding plate is provided on the upstream surface as viewed from the direction of rotation of the rotor, which shields the magnetic force of the first bar magnet. a first auxiliary magnet is provided so that the polarity of the first auxiliary magnet is the same as that of the outer magnetic pole, which is the magnetic pole of the outer facing surface of the first bar magnet, and so that the polarity of the concave surface of the gap formed between adjacent second bar magnets of the fixed-side magnet section is the same as that of the inner magnetic pole, which is the magnetic pole of the inner facing surface of the second bar magnet of the fixed-side magnet section; and second auxiliary magnets on the rotor side are provided on the left and right surfaces as viewed from the rotation direction of the rotor so as to hide the magnetic pole portion of the first bar magnet opposite to the outer magnetic pole, and the magnetization direction of the second auxiliary magnet on the rotor side isThe fixed part side second auxiliary magnets are arranged along the radial direction and are arranged so that all of the outer magnetic poles in the radial direction have the same polarity as the outer magnetic poles, and are provided on the left and right surfaces as viewed from the direction of rotation of the rotor so as to hide the magnetic pole portion opposite to the inner magnetic pole of the second bar magnet, and the magnetization directions of the fixed part side second auxiliary magnets are arranged along the radial direction and so that all of the inner magnetic poles in the radial direction have the same polarity as the inner magnetic pole, and the rotor side third auxiliary magnets are provided on the left and right surfaces as viewed from the direction of rotation of the rotor so as to hide at least the magnetic pole portion of the inner magnetic pole in the radial direction of the second auxiliary magnet, and the magnetization direction of the rotor side third auxiliary magnet is parallel to the rotation axis When the rotor-side third auxiliary magnet is arranged on the left surface, magnetic pole portions of the same polarity as the outer magnetic pole are arranged on the left surface side, and when arranged on the right surface, magnetic pole portions of the same polarity as the outer magnetic pole are arranged on the right surface side, and the fixed-part-side third auxiliary magnet is provided on the left and right surfaces as viewed from the rotation direction of the rotor so as to hide at least the magnetic pole portion of the outer magnetic pole in the radial direction of the fixed-part-side second auxiliary magnet, and the magnetization direction of the fixed-part-side third auxiliary magnet is parallel to the rotation axis, and when the fixed-part-side third auxiliary magnet is arranged on the left surface, magnetic pole portions of the same polarity as the inner magnetic pole are arranged on the left surface side, and when arranged on the right surface, magnetic pole portions of the same polarity as the inner magnetic pole are arranged on the right surface side.

[0010] According to the present invention, a rotor-side magnetic force blocking plate for blocking the magnetic force of the bar magnet is provided on the downstream surface, as viewed from the direction of rotor rotation, of the outer facing surface, which is the surface on which the bar magnet of the rotor-side magnet section faces the bar magnet of the fixed-side magnet section. And a fixed-side magnetic force blocking plate for blocking the magnetic force of the bar magnet is provided on the upstream surface, as viewed from the direction of rotor rotation, of the inner facing surface, which is the surface on which the bar magnet of the fixed-side magnet section faces the bar magnet of the rotor-side magnet section.

[0011] As a result, when the bar magnets of the rotor-side magnet section and the bar magnets of the fixed-side magnet section approach each other due to the rotation of the rotor, a repulsive force is unlikely to be generated, making it less likely to impede the rotation of the rotor.Furthermore, when the bar magnets of the rotor-side magnet section and the bar magnets of the fixed-side magnet section move away from each other, a repulsive force is effectively generated.

[0012] In other words, it is now easier to utilize the repulsive force when the bar magnets in the rotor-side magnet section and the bar magnets in the fixed-side magnet section separate from each other. Therefore, despite the simple structure, it is possible to effectively utilize the repulsive force that occurs when the rotor-side magnets and the fixed-side magnets separate from each other due to rotor rotation.

[0013] Furthermore, in the above-mentioned magnetic rotating device, it is preferable that the rotor-side magnetic force shielding plate is provided on the downstream surface of half of the outer opposing surface of the first bar magnet, and the fixed-side magnetic force shielding plate is provided on the upstream surface of half of the inner opposing surface of the second bar magnet.

[0014] As a result, the rotor rotates with almost no repulsive force until the first bar magnet of the rotor-side magnet section and the second bar magnet of the fixed-side magnet section face each other, and a repulsive force is generated when the bar magnet of the rotor-side magnet section passes by the bar magnet of the fixed-side magnet section. Therefore, the repulsive force generated when the rotor-side magnet and the fixed-side magnet separate due to the rotation of the rotor can be more effectively extracted.

[0015] Furthermore, in the magnetic rotating device described above, it is preferable that the rotor-side magnetic force shielding plate has an eave portion that protrudes beyond the end of the downstream surface of the first bar magnet, and the fixed-side magnetic force shielding plate has an eave portion that protrudes beyond the end of the upstream surface of the second bar magnet. This makes it even more difficult for a repulsive force to be generated when the bar magnets of the rotor-side magnet section and the bar magnets of the fixed-side magnet section approach each other as the rotor rotates.

[0016] Furthermore, in the magnetic rotating device described above, the rotor-side magnetic force shielding plate and the stator-side magnetic force shielding plate are preferably made of a ferromagnetic material. Ferromagnetic material absorbs magnetic force and therefore has the function of shielding the magnetic force emitted from the bar magnet.

[0017] Furthermore, in the magnetic rotating device described above, it is preferable that the rotor-side magnetic force shielding plate and the stator-side magnetic force shielding plate are made of iron plates and multiple magnets. By making them of iron plates and multiple magnets in this way, the magnetic force absorption capacity can be increased, and magnetic force can be shielded more effectively.

[0018] Furthermore, in the magnetic rotating device described above, it is preferable to fill the gap with a non-magnetic material, which firmly fixes the bar magnets, preventing the bar magnets in the rotor-side magnet section and the stationary-side magnet section from shifting out of position due to the repulsive force between them.

[0019] Furthermore, in the magnetic rotating device described above, it is preferable to provide a flywheel on the rotating shaft. This allows the repulsive force in the rotor rotation direction, which occurs between the rotor-side magnet portion and the fixed-side magnet portion, to be converted into smooth rotational motion of the rotor. Furthermore, providing a flywheel makes the rotor rotation even lighter, thereby further assisting the rotational force of the power source (e.g., motor) that rotates the rotor.

[0020] Furthermore, in the magnetic rotating device described above, it is preferable to use a flywheel as the rotor. By using a flywheel as the rotor, the repulsive force that promotes the rotation of the rotor can be directly transmitted to the flywheel. This can further assist the rotational force of the power source (e.g., a motor) that rotates the rotor.

[0021] Furthermore, in the magnetic rotating device, it is preferable that a plurality of magnetic rotating devices are connected in series. By connecting a plurality of magnetic rotating devices in series in this way, it is possible to further assist the rotation of the rotor.

[0022] The power generation device of the present invention is characterized by comprising a motor, a generator that generates electricity by rotating a power generation rotor using the motor as a rotational drive source, and the above-mentioned magnetic rotating device provided between the motor and the power generation rotor.

[0023] According to the power generating device of the present invention, the magnetic rotating device is provided between the motor and the generator rotor, thereby supplementing the rotational force of the motor. This allows for more efficient generation of power than generating power by rotating the generator rotor of the generator using only the motor. Furthermore, the motor can be made smaller when the same power is generated by the generator. The present invention also provides a magnetic rotating device that uses the magnetic force of a magnet as rotational force, comprising a rotatably supported hollow shaft 131, an outer ring cover band 134 fixed to the hollow shaft and rotating around the axis of the hollow shaft, an outer ring magnet portion 135 fixed to the outer ring cover band, and a plurality of second bar magnets, the second bar magnets being arranged on the inner peripheral surface of the outer ring cover band to form equally spaced gaps in the circumferential direction, and the magnetization direction of the second bar magnets being radially orthogonal to the axis of the hollow shaft. The outer ring magnet part is arranged along a radial direction, and the inner magnetic pole of the second bar magnet facing the rotor side magnet part is arranged so that the inner magnetic pole of the second bar magnet has the same polarity as the outer magnetic pole, and a plurality of first bar magnets are arranged on the inner circumferential surface part of the outer ring cover band, forming equally spaced gaps along the rotation direction of the outer ring cover band, and the magnetization direction of the first bar magnets is arranged along a radial direction perpendicular to the axis of the hollow shaft, and all of the outer magnetic poles on the outside of the radial direction of the first bar magnets are arranged so that the inner magnetic pole of the first bar magnet facing the rotor side magnet part has the same polarity as the outer magnetic pole. The inner ring magnet portion 136 is arranged to have the same polarity, and the outer opposing surface, which is the opposing surface of the first bar magnet of the inner ring magnet portion to the second bar magnet of the outer ring magnet portion, has a magnetic force shielding plate on the inner ring magnet side that shields the magnetic force of the first bar magnet on the downstream surface as viewed from the direction of rotation of the outer ring cover band. The inner opposing surface, which is the opposing surface of the second bar magnet of the outer ring magnet portion to the first bar magnet of the inner ring magnet portion, has a magnetic force shielding plate on the inner ring magnet side that shields the magnetic force of the first bar magnet on the upstream surface as viewed from the direction of rotation of the outer ring cover band. A magnetic force shielding plate is provided on the outer ring cover band side to shield the magnetic force of the first bar magnet, so that the magnetic pole of the concave surface of the gap formed between adjacent first bar magnets of the inner ring magnet section has the same polarity as the outer magnetic pole, which is the magnetic pole of the outer facing surface of the first bar magnet of the inner ring magnet section, and the magnetic pole of the concave surface of the gap formed between adjacent second bar magnets of the outer ring magnet section has the same polarity as the inner magnetic pole, which is the magnetic pole of the inner facing surface of the second bar magnet,a first auxiliary magnet is provided, and second auxiliary magnets of the inner ring magnet unit are provided on the left and right surfaces, as viewed from the direction of rotation of the outer ring cover band, so as to hide the magnetic pole portion of the first bar magnet opposite to the outer magnetic pole, the second auxiliary magnets of the inner ring magnet unit are arranged so that their magnetization directions are aligned along the radial direction and all of the outer magnetic poles in the radial direction have the same polarity as the outer magnetic pole, the second auxiliary magnets of the outer ring magnet unit are provided on the left and right surfaces, as viewed from the direction of rotation of the outer ring cover band, so as to hide the magnetic pole portion of the second bar magnet opposite to the inner magnetic pole, the second auxiliary magnets of the outer ring magnet unit are arranged so that their magnetization directions are aligned along the radial direction and all of the inner magnetic poles in the radial direction have the same polarity as the inner magnetic pole, the left surface, as viewed from the direction of rotation of the outer ring cover band, so as to hide at least the magnetic pole portion of the inner magnetic pole in the radial direction of the second auxiliary magnet of the inner ring magnet unit, and a third auxiliary magnet of the inner ring magnet portion is provided on the right surface, the magnetization direction of the third auxiliary magnet of the inner ring magnet portion is parallel to the cavity axis, and when the third auxiliary magnet of the inner ring magnet portion is arranged on the left surface, magnetic pole portions of the same polarity as the outer magnetic pole are arranged on the left surface side, and when arranged on the right surface, magnetic pole portions of the same polarity as the outer magnetic pole are arranged on the right surface side, and the third auxiliary magnet of the outer ring magnet portion is provided on the left and right surfaces as viewed from the rotation direction of the outer ring cover band so as to hide at least the magnetic pole portion of the outer magnetic pole in the radial direction of the second auxiliary magnet, and the magnetization direction of the third auxiliary magnet of the outer ring magnet portion is parallel to the cavity axis, and when the third auxiliary magnet of the outer ring magnet portion is arranged on the left surface, magnetic pole portions of the same polarity as the inner magnetic pole are arranged on the left surface side, and when arranged on the right surface, magnetic pole portions of the same polarity as the inner magnetic pole are arranged on the right surface side.

[0024] In the magnetic rotating device, it is preferable that the outer ring cover band and the hollow shaft are fixed via an outer ring flywheel to form an outer ring rotor.

[0025] Furthermore, in the magnetic rotating device, it is preferable that the outer ring flywheels are provided on both sides of the outer ring magnet portion in the axial direction.

[0026] Furthermore, in the above-mentioned magnetic rotating device, it is preferable to provide a stepped shaft that fixes the inner ring magnet portion, is arranged with a gap between it and the hollow shaft, and is rotatably supported from a base, and a disc brake (115, 148) that can fix and release the stepped shaft, and to operate the disc brake (115, 148) to rotate the outer ring rotor composed of the outer ring magnet portion and the outer ring flywheel.

[0027] The power generating device of the present invention comprises a motor, a generator that generates electricity by rotating a power generating rotor using the motor as a rotational drive source, a magnetic rotating device as described in claim 14 that is provided between the motor and the power generating rotor, a disc brake (118, 149) that can fix and release the hollow shaft, a joint 230 that can connect and release the rotating shaft 12A of the motor and the stepped shaft, a disc brake (115, 148) that can fix and release the stepped shaft, and a joint 232 that can connect and release the rotating shaft 14B of the power generating rotor to the stepped shaft.

[0028] In the above power generating device, the bearings supporting the hollow shaft and the stepped shaft are made up of a plurality of first bar magnets, with the hollow shaft and the stepped shaft as rotors, and the first bar magnets are arranged on the outer circumferential surface of the rotor, forming equally spaced gaps along the rotation direction of the rotor, and the magnetization directions of the first bar magnets are aligned along a radial direction perpendicular to the axis of the rotating shaft, and the outer magnetic poles of the first bar magnets on the outer side in the radial direction are all arranged to have the same polarity, and the second bar magnets are arranged on the fixed part side a fixed-side magnet section, the fixed-side magnet section being arranged on the inner circumferential surface with equally spaced gaps formed in the circumferential direction, the magnetization directions of the second bar magnets being aligned along a radial direction perpendicular to the axis of the rotor, and the second bar magnets being arranged so that the inner magnetic pole of the second bar magnet facing the rotor-side magnet section has the same polarity as the outer magnetic pole; and a rotor-side magnetic force blocking plate for blocking the magnetic force of the first bar magnet is provided on the downstream surface, as viewed from the direction of rotation of the rotor, of the outer opposing surface of the rotor-side magnet section, which is the opposing surface of the first bar magnet of the rotor-side magnet section facing the second bar magnet, A fixed-side magnetic force shielding plate is provided on the upstream surface of the inner opposing surface of the rotor-side magnet section, which is the surface facing the first bar magnet of the rotor-side magnet section, to shield the magnetic force of the first bar magnet. The magnetic pole of the concave surface of the gap formed between adjacent first bar magnets of the rotor-side magnet section has the same polarity as the outer magnetic pole, which is the magnetic pole of the outer opposing surface of the first bar magnet of the rotor-side magnet section, and the magnetic pole of the concave surface of the gap formed between adjacent second bar magnets of the fixed-side magnet section has the same polarity as the inner magnetic pole of the second bar magnet of the fixed-side magnet section. First auxiliary magnets are provided on the left and right surfaces of the rotor as viewed in the direction of rotation of the rotor so as to have the same polarity as the inner magnetic poles of the opposing surfaces, and second auxiliary magnets are provided on the rotor side on the left and right surfaces as viewed in the direction of rotation of the rotor so as to hide the magnetic pole portion of the first bar magnet opposite to the outer magnetic pole, and the second auxiliary magnets on the rotor side are arranged so that their magnetization directions are aligned along the radial direction and all of the outer magnetic poles in the radial direction have the same polarity as the outer magnetic poles, and the left and right surfaces as viewed in the direction of rotation of the rotor are arranged so as to hide the magnetic pole portion of the second bar magnet opposite to the inner magnetic pole.A second auxiliary magnet on the fixed part side is provided on the right surface, and the second auxiliary magnet on the fixed part side is arranged so that its magnetization direction is aligned along the radial direction and all of the inner magnetic poles in the radial direction have the same polarity as the inner magnetic pole, and a third auxiliary magnet on the rotor side is provided on the left surface and right surface as viewed from the rotation direction of the rotor so as to hide at least the magnetic pole portion of the inner magnetic pole in the radial direction of the second auxiliary magnet on the rotor side, and the magnetization direction of the third auxiliary magnet on the rotor side is parallel to the rotation axis of the rotor, and when the third auxiliary magnet on the rotor side is arranged on the left surface, a magnetic pole portion on the left surface that has the same polarity as the outer magnetic pole When the third auxiliary magnet on the fixed part side is disposed on the right surface, a magnetic pole portion of the same polarity as the outer magnetic pole is arranged on the right surface side, and the third auxiliary magnet on the fixed part side is provided on the left surface and the right surface as viewed from the rotation direction of the rotor so as to hide at least the magnetic pole portion of the outer magnetic pole in the radial direction of the second auxiliary magnet on the fixed part side, and the magnetization direction of the third auxiliary magnet on the fixed part side is parallel to the rotation axis of the rotor, and when the third auxiliary magnet on the fixed part side is disposed on the left surface, it is preferable that a magnetic pole portion of the same polarity as the inner magnetic pole is arranged on the left surface side, and when the third auxiliary magnet on the fixed part side is disposed on the right surface, a magnetic pole portion of the same polarity as the inner magnetic pole is arranged on the right surface side.

[0029] Furthermore, it is preferable that the motor and / or the generator be supported by the bearings described above.

[0030] The magnetic rotating device of the present invention has a simple structure, but can effectively utilize the repulsive force that occurs when the rotor-side magnet and the fixed-side magnet separate due to rotor rotation, thereby providing more support for rotor rotation than conventional magnetic rotating devices that use magnetic force.

[0031] Furthermore, according to the power generating device of the present invention, the magnetic rotating device of the present invention is provided between the motor and the power generating rotor, so that the rotational force of the motor can be assisted, thereby more effectively generating power.

[0032] 6A is an explanatory diagram illustrating a configuration example of the rotor-side magnetic force shielding plate and the fixed-side magnetic force shielding plate. FIG. 6B is an explanatory diagram illustrating a configuration example of the rotor-side magnetic force shielding plate and the fixed-side magnetic force shielding plate. FIG. 6A is an explanatory diagram illustrating a configuration example of the rotor-side magnetic force shielding plate and the fixed-side magnetic force shielding plate. FIG. 6B is an explanatory diagram illustrating a configuration example of yet another configuration of the rotor-side magnetic force shielding plate and the fixed-side magnetic force shielding plate. FIG. 6C is an explanatory diagram illustrating the operation of the magnetic rotating device of the first embodiment of the present invention. FIG. 6A is a magnetic rotating device of the second embodiment of the present invention, where FIG. 6A is a side view and FIG. 6B is a front sectional view taken along line b-b of FIG. FIG. 6D is an explanatory diagram illustrating a configuration example of the magnetic rotating device of the second embodiment of the present invention. FIG. 1 is a front cross-sectional view of a magnetic rotating device according to a third embodiment of the present invention. FIG. 2 is a front cross-sectional view of a magnetic rotating device according to a fourth embodiment of the present invention. FIG. 3 is an overall configuration diagram of a power generating device according to a fifth embodiment of the present invention. FIG. 4 is a configuration diagram showing a motor section of a fifth embodiment. FIG. 5 is a configuration diagram showing a magnetic rotating device according to a fifth embodiment. FIG. 6 is a configuration diagram showing a generator section of a fifth embodiment. FIG. 7 is a side cross-sectional view of a magnetic bearing in a fifth embodiment. FIG. 8 is a front cross-sectional view of a magnetic bearing in a fifth embodiment. FIG. 9 is a configuration diagram showing a modified example of the fifth embodiment.

[0033] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of a magnetic rotating device and a power generating device 10 incorporating the same according to the present invention will now be described with reference to the accompanying drawings.

[0034] The present invention is described by the following preferred embodiment. It is understood that many modifications can be made and other embodiments can be utilized without departing from the scope of the present invention. Therefore, all modifications within the scope of the present invention are included within the scope of the appended claims.

[0035] The magnetic rotating device of the present invention is an auxiliary device that efficiently rotates a rotor by utilizing the repulsive force that occurs when the magnetic poles of opposing rotor-side and fixed-side magnets are made the same polarity, and requires a rotary drive source to rotate the rotor. In other words, it is not used alone, but is preferably used as a torque auxiliary means that increases the torque of a rotary drive source such as a motor 12. Therefore, in the following explanation, we will first explain the power generating device 10 of the present invention that incorporates the magnetic rotating device of the present invention, and then we will explain the magnetic rotating device of the present invention.

[0036] [Power Generator] Fig. 1 is a partial cross-sectional view of the overall configuration of a power generator 10 of the present invention incorporating a magnetic rotating device of the present invention. Note that Fig. 1 incorporates the first embodiment of the magnetic rotating devices of the first to fourth embodiments described in detail below, but it goes without saying that the second, third, and fourth embodiments may also be incorporated.

[0037] As shown in Fig. 1, the power generating device 10 of the present invention is mainly composed of a motor 12, a generator 14 that uses the motor 12 as a rotational drive source to rotate a power generating rotor 14A to generate power, and a magnetic rotating device 16 of the present invention that is provided between the motor 12 and the power generating rotor 14A. Arrow A indicates the rotor rotation direction, and this also applies to Figs. 1 and subsequent figures.

[0038] The magnetic rotating device 16 is supported on a base 18 via a device frame 20. A vibration damping member 18A (e.g., a laminated rubber plate) is interposed between the base 18 and the device frame 20, and the base 18 and the device frame 20 are fixed together with fixing bolts 18B.

[0039] The motor 12 is supported on a base 18 via a motor mounting base 22, and the generator 14 is supported on the base 18 via a generator mounting base 24. The motor mounting base 22 and the generator mounting base 24 are each provided with bearings 26, which rotatably support both sides of a rotation shaft 28 of the magnetic rotating device 16.

[0040] Furthermore, the rotating shaft 12A of the motor 12 and one end of the rotating shaft 28 of the magnetic rotating device 16 are connected by a joint 30. Furthermore, the rotating shaft 14B of the power generation rotor 14A of the generator 14 and the other end of the rotating shaft 28 of the magnetic rotating device 16 are connected by a joint 30. Brake means 32 is provided at the portion of the pair of joints 30 to forcibly stop the rotation of the magnetic rotating device 16 when the motor 12 is stopped. The reason for providing the brake means 32 is that once the magnetic rotating device 16 starts to rotate, it will continue to rotate for a certain period of time even if the motor 12 is stopped.

[0041] The power generating device 10 of the present invention configured as described above generates electricity by using the motor 12 as a rotary drive source to rotate the generator rotor 14A of the generator 14. In this way, in the case of a generator 14 that generates electricity by rotating the generator rotor 14A using the motor 12 as a rotary drive source, the power of the generator 14 is determined by the output of the motor 12, i.e., the rotational force with which the motor 12 rotates. Therefore, in order to obtain a large amount of power generation, a large, high-output motor 12 must be used.

[0042] Therefore, in the power generating device 10 of the present invention, the magnetic rotating device 16 of the present invention is provided between the motor 12 and the power generating rotor 14A as a torque assisting means for increasing the rotation speed of the power generating rotor 14A.

[0043] As a result, according to the power generating device 10 of the present invention, the magnetic rotating device 16 of the present invention is provided between the motor 12 and the power generating rotor 14A to assist the rotational force of the motor 12, so that the power generating rotor 14A can be rotated more efficiently than by the motor 12 alone. The configuration and operation of the magnetic rotating device 16 of the present invention will be described in detail below.

[0044] [First embodiment of magnetic rotating device] Figure 2(A) is a side view of a magnetic rotating device according to a first embodiment of the present invention, with the rotor rotation direction A facing the front, and (B) is a front cross-sectional view taken along line a-a in (A). In the front cross-sectional view of Figure 2(B), in order to make the cross-sectional structural diagram easier to understand, the main components, namely the device frame, rotating shaft, rotor, fixed part, bar magnet, flywheel, rotor-side magnetic force shielding plate 42, and fixed-side magnetic force shielding plate 44, are hatched, but hatching of other components is omitted. This omission of hatching is also true for the front cross-sectional views from Figure 2 onwards. Note that a permanent magnet is used as the bar magnet.

[0045] As shown in Figure 2, the magnetic rotating device 16 of the first embodiment of the present invention is mainly composed of a rotating shaft 28 supported for free rotation, a rotor 34, a fixed portion 36, a rotor-side magnet portion 38, a fixed-side magnet portion 40, a rotor-side magnetic force shielding plate 42, and a fixed-side magnetic force shielding plate 44.

[0046] In FIG. 2, the device frame 20 is formed in a square tubular shape with an open surface in the axial direction of the rotary shaft 28 of the rotor 34, but it may also be formed in a cylindrical shape.

[0047] 1, the rotating shaft 28 is rotatably supported by a pair of bearings 26 arranged on the outside of the device frame 20, and a pair of flywheels 46, each with a diameter larger than that of the rotor 34, are provided on both sides of the rotating shaft 28, sandwiching the rotor 34. A shaft collar 48 ensures a fixed distance between the rotor 34 and the flywheels 46.

[0048] 2A, the rotor 34 has a circular shape and its center is fixed to the rotation shaft 28. As a result, the rotor 34 rotates together with the rotation shaft 28, with the central axis of the rotation shaft 28 as the center of rotation. The rotor 34 in this embodiment has a cylindrical fitting tube 34B that fits onto the rotation shaft 28 at the center of a disk-shaped rotor main body 34A that is perpendicular to the rotation shaft 28, and a cylindrical outer ring tube 34C outside the rotor main body 34A. A cylindrical tube 50 for fixing the rotor-side magnet section 38 is provided outside the outer ring tube 34C.

[0049] As shown in FIG. 2B , a pair of opposing rotor-side side covers 52 are supported on the rotor main body 34A. The side covers 52 are preferably made of a non-magnetic material such as stainless steel. The side covers 52 are formed in the shape of a ring plate with an opening in the center, and the side covers 52 are connected to each other by a plurality of connecting bolts 54. One of the connecting bolts 54 passes through a hole formed in a bar magnet 66 (first bar magnet, hereinafter simply referred to as the "bar magnet 66"). This allows the bar magnet 66 to be supported by the side covers 52 via the connecting bolt 54.

[0050] The fixed portion 36 is fixed to the device frame 20. The fixed portion 36 is provided outside the rotor 34 so as to surround the rotor 34, and has an inner circumferential surface concentric with the rotor 34. In this embodiment, the fixed portion 36 has a cylindrical outer tube 56 and a cylindrical inner tube 58, and is structured so that the device frame 20 and the outer tube 56 are connected at multiple locations with connecting bolts 60, and the outer tube 56 and the inner tube 58 are connected and fixed at multiple locations with connection adjustment bolts 62. The rotor 34 is disposed inside the inner tube 58, and the inner tube 58 has an inner circumferential surface concentric with the rotor 34. The fixed-side magnet portion 40 is provided on the inner circumferential surface of the inner tube 58.

[0051] 2A, the inner cylinder 58 has a structure in which a plurality of arc-shaped block plates 58A are arranged in a ring shape. To provide the fixed-side magnet section 40 on the inner peripheral surface of the inner cylinder 58, first, a bar magnet 66 is fixed to the arc-shaped block plates 58A, and then the arc-shaped block plates 58A are arranged in a ring shape while adjusting the distance from the outer cylinder 56 to the arc-shaped block plates 58A with the connection adjustment bolts 62.

[0052] As shown in FIG. 2B , a pair of opposing fixed-side side covers 61, 61 are supported on the outer cylinder 56. The side covers 61 are preferably made of a non-magnetic material such as stainless steel. The side covers 61 are formed in the shape of a ring plate with a central opening that is larger in diameter than the rotor-side side cover 52, and the side covers 61 are connected to each other by multiple connecting bolts 63. One of the multiple connecting bolts 63 passes through a hole formed in a bar magnet 70 (second bar magnet, hereinafter simply referred to as the "bar magnet 70"). This allows the bar magnet 70 to be supported by the side cover 61 via the connecting bolt 63.

[0053] As shown in Fig. 2A, the rotor-side magnet section 38 is configured by arranging and fixing a plurality of bar magnets 66 on a cylindrical tube 50 on the outer peripheral surface of the rotor 34, with equally spaced gaps 64 between them along the rotor rotation direction A. As a result, the rotor-side magnet section 38 is formed as a magnet section in which a plurality of bar magnets 66 are arranged in a circle at equal intervals. Fig. 2A shows an example in which 18 bar magnets 66 are arranged, but the number is not limited to this number.

[0054] The cylindrical tube 50 to which the bar magnet 66 is fixed is preferably made of a ferromagnetic material such as an iron plate. Any method for fixing the bar magnet 66 can be used as long as it secures the bar magnet 66 to the cylindrical tube 50, but it is preferable to firmly bond and fix it with an adhesive.

[0055] By making the cylindrical tube 50 out of a ferromagnetic material in this way, the magnetic force from the bottom surface 66F (see FIGS. 3, 4, and 8), which is the south pole (the south pole opposite to the north pole of the outer facing surface 66A) of the bar magnet 66 fixed to the cylindrical tube 50, can be absorbed. This makes it possible to weaken the magnetic force from the portion covered with the ferromagnetic material.

[0056] The plurality of bar magnets 66 of the rotor-side magnet section 38 are arranged in a direction perpendicular to the axis of the rotating shaft, with the north and south poles positioned radially and with the outer magnetic poles on the outer side of the radial direction all having the same polarity. In this embodiment, the bar magnets 66 are arranged so that their north poles are the outer magnetic poles, but they may also be arranged so that their south poles are the outer magnetic poles.

[0057] 2A, the fixed-side magnet section 40 is configured by arranging and fixing a plurality of bar magnets 70 with equally spaced gaps 68 in the circumferential direction on the inner circumferential surface portion of the fixed section 36, i.e., the inner circumferential surface portion of the cylindrical inner tube 58. As a result, the fixed-side magnet section 40 is formed as a magnet section in which the plurality of bar magnets 70 are arranged at equal intervals in a circle and is one size larger than the rotor-side magnet section 38.

[0058] In this case, it is preferable that the arc-shaped block plate 58A constituting the inner cylinder 58 is also formed of a ferromagnetic material such as an iron plate for the same reasons as those for the cylindrical cylinder 50, and that the bottom surfaces 70F of the bar magnets 70 are firmly fixed to the arc-shaped block plate 58A with adhesive (see Figures 3, 4 and 8). In addition, it is preferable that the number of bar magnets 70 in the fixed-side magnet section 40 is the same as that in the rotor-side magnet section 38.

[0059] The multiple bar magnets 70 of the fixed-side magnet section 40 are arranged in a direction such that their north and south poles are located in a radial direction perpendicular to the axis of the rotating shaft 28, and the inner magnetic pole facing the rotor-side magnet section 38 has the same polarity as the outer magnetic pole of the rotor-side magnet section 38. In this embodiment, the bar magnets 70 are arranged so that their north poles are the inner magnetic poles, but if the outer magnetic pole of the rotor-side magnet section 38 is an south pole, the inner magnetic pole of the fixed-side magnet section 40 is also an south pole.

[0060] The reason why the rotor-side magnet section 38 and the fixed-side magnet section 40 have the gap 64 (or gap 68) is that if adjacent bar magnets 66 (or bar magnets 70) are in contact with each other, this has an adverse effect on the generation of a repulsive force in the rotor rotation direction A. Therefore, it is preferable to form the gap 64 (or gap 68) between adjacent bar magnets 66 (or bar magnets 70) of the rotor-side magnet section 38 and the fixed-side magnet section 40, with a gap distance of approximately one to two times the width dimension of the bar magnet 66 (or bar magnet 70) as viewed in the rotor rotation direction A.

[0061] Next, the rotor-side magnetic force shielding plate 42 and the fixed-side magnetic force shielding plate 44 will be described. In this embodiment, the following explanation will be given assuming that the outer magnetic pole of the bar magnet 66 of the rotor-side magnet section 38 and the inner magnetic pole of the bar magnet 70 of the fixed-side magnet section 40 are north poles.

[0062] Figure 3 is an oblique view illustrating the rotor-side magnetic force shielding plate 42 and the fixed-side magnetic force shielding plate 44, in which the rotor-side magnetic force shielding plate 42 and the fixed-side magnetic force shielding plate 44 are respectively fixed to the opposing surfaces of the bar magnet 66 of the rotor-side magnet section 38 and the bar magnet 70 of the fixed-side magnet section 40.

[0063] As shown in Figure 3, the rotor-side magnetic force shielding plate 42 shields the magnetic force of the bar magnet 66, and is provided on the downstream surface, as viewed from the rotor rotation direction A, of the outer opposing surface 66A, which is the opposing surface of the bar magnet 66 of the rotor-side magnet section 38 to the bar magnet 70 of the fixed-side magnet section 40.

[0064] In addition, the fixed side magnetic force shielding plate 44 shields the magnetic force of the bar magnet 70, and is provided on the upstream surface of the inner opposing surface 70A, which is the opposing surface of the bar magnet 70 of the fixed side magnet section 40 facing the bar magnet 66 of the rotor side magnet section 38, as viewed from the rotor rotation direction A.

[0065] This blocks magnetic force from emitting from the downstream surface of the outer facing surface 66A, which is the pole surface of the bar magnet 66 with the strongest magnetic force of the bar magnet 66 of the rotor-side magnet section 38. It also blocks magnetic force from emitting from the upstream surface of the inner facing surface 70A, which is the pole surface of the bar magnet 70 with the strongest magnetic force of the bar magnet 70 of the fixed-side magnet section 40.

[0066] 3, it is preferable to cover with the rotor-side magnetic force shielding plate 42 the surface downstream of the center line M of half of the outer facing surface 66A of the bar magnet 66 of the rotor-side magnet section 38 as seen from the rotor rotation direction A. On the other hand, it is preferable to cover with the rotor-side magnetic force shielding plate 42 the surface upstream of the center line M of half of the inner facing surface 70A of the bar magnet 70 of the fixed-side magnet section 40 as seen from the rotor rotation direction A.

[0067] Furthermore, it is more preferable that the rotor-side magnetic force shielding plate 42 forms an eave portion 42A that protrudes from the end of the downstream surface of the outer facing surface 66A of the bar magnet 66. It is also more preferable that the fixed-side magnetic force shielding plate 44 forms an eave portion 44A that protrudes from the end of the upstream surface of the inner facing surface 70A of the bar magnet 70.

[0068] Figure 4 shows a modification of Figure 3. As shown in Figure 4, the downstream half of the outer facing surface 66A of the bar magnet 66 of the rotor-side magnet section 38 (the surface downstream of the center line M) is cut away to form a stepped surface 67 recessed from the outer facing surface 66A, and the rotor-side magnetic force shielding plate 42 is embedded in this stepped surface 67. This allows the upstream surface of the outer facing surface 66A of the bar magnet 66, where the rotor-side magnetic force shielding plate 42 is not provided, to be flush with the surface of the rotor-side magnetic force shielding plate 42.

[0069] Similarly, the upstream half of the inner facing surface 70A of the bar magnet 70 of the fixed-side magnet section 40 (the surface upstream of the center line M) is cut away to form a stepped surface 71 recessed from the inner facing surface 70A, and the fixed-side magnetic force shielding plate 44 is embedded in this stepped surface 71. This allows the downstream surface of the inner facing surface 70A of the bar magnet 70 of the fixed-side magnet section 40, where the fixed-side magnetic force shielding plate 44 is not provided, to be flush with the surface of the fixed-side magnetic force shielding plate 44.

[0070] Therefore, in Figure 4, the opposing surfaces of the bar magnets 66, 70 can be closer together than in Figure 3, and a greater repulsive force can be obtained. Note that even when the rotor-side magnetic force shielding plate 42 and the stator-side magnetic force shielding plate 44 are fixed to the outer opposing surfaces 66A and the inner opposing surfaces 70A of the bar magnets 66, 70 as in Figure 3, it is preferable to keep the bar magnets 66, 70 close together without touching each other.

[0071] In the following explanation, the example of Figure 3 will be used, in which the rotor-side magnetic force shielding plate 42 and the fixed-side magnetic force shielding plate 44 are respectively fixed to the opposing surfaces of the bar magnet 66 of the rotor-side magnet section 38 and the bar magnet 70 of the fixed-side magnet section 40, but of course a modified example in which they are embedded in the step surfaces 67, 71 of Figure 4 may also be used.

[0072] 5 to 7 show examples of the configuration of the rotor-side magnetic force shielding plate 42 and the stator-side magnetic force shielding plate 44. Since the rotor-side magnetic force shielding plate 42 and the stator-side magnetic force shielding plate 44 have the same configuration, only the rotor-side magnetic force shielding plate 42 will be described in detail. In Figures 5 to 7, center line P indicates the vertical position of half the surface in the rotor rotation direction A on the outer facing surface 66A of the bar magnet 66 and the inner facing surface 70A of the bar magnet 70, and is synonymous with center line M shown horizontally in Figures 3 and 4.

[0073] The rotor-side magnetic force shielding plate 42 in Figure 5 is made of a ferromagnetic material such as iron, and in Figure 5 it is made as a laminated iron plate 72 made by stacking multiple thin iron plates. Ferromagnetic material absorbs magnetic flux from the bar magnet 66, and can weaken the magnetic force from the part covered with the ferromagnetic material. By using the laminated iron plate 72 in this way, a thin magnetic layer is formed on the rotor-side magnetic force shielding plate 42, making it easier to absorb magnetic flux than if it were made of a single iron plate.

[0074] As the ferromagnetic material, in addition to iron, silicon iron (iron mixed with a small amount of silicon), perlomine (an alloy mainly composed of nickel), etc. can also be used. The fixed-side magnetic force shielding plate 44 has a similar structure.

[0075] The rotor-side magnetic force shielding plate 42 of Fig. 6A is provided with an underlying magnet 74, which is a plurality of small, square, rod-shaped blocking magnets 74A (permanent magnets) laid on the surface of the laminated iron plate 72 of Fig. 5. The plurality of blocking magnets 74A that make up the underlying magnet 74 are rod-shaped from the front side to the back side of Fig. 6A and are arranged in the rotor rotation direction A. In the underlying magnet 74, the magnetic poles on the laminated iron plate 72 side of adjacent blocking magnets 74A are alternately different. The fixed-side magnetic force shielding plate 44 has a similar configuration.

[0076] The rotor-side magnetic force shielding plate 42 of Fig. 6B is a modified version of the rotor-side magnetic force shielding plate 42 of Fig. 6A. Fig. 6B (A) is a perspective view of the rotor-side magnetic force shielding plate 42 provided on a bar magnet 66, Fig. 6B (B) is a plan view of Fig. 6A viewed from the direction of arrow G, and Fig. 6C is a side view of Fig. 6A viewed from the direction of arrow H. As can be seen from these figures, the rotor-side magnetic force shielding plate 42 of Fig. 6B has a plurality of shielding magnets 74A constituting the underlying magnet 74, each of which has a rod shape aligned along the rotor rotation direction A and is arranged perpendicular to the rotor rotation direction A. In other words, the underlying magnet 74 of the rotor-side magnetic force shielding plate 42 of Fig. 6B is a configuration in which the underlying magnet 74 of the rotor-side magnetic force shielding plate 42 of Fig. 6A is rotated 90 degrees on the outer facing surface 66A of the bar magnet 66. The stator-side magnetic force shielding plate 44 has a similar configuration.

[0077] 6, the rotor-side magnetic force shielding plate 42 in Fig. 7 has laid-out magnets 74, which are made up of a plurality of small, square, rod-shaped shielding magnets 74A (permanent magnets) laid on the surface of a laminated iron plate 72, but the shielding magnets 74A are trapezoidal in shape. The stator-side magnetic force shielding plate 44 has a similar configuration.

[0078] Here, like the blocking magnet 74A shown in Fig. 6B, the blocking magnet 74A may also be arranged so that its longitudinal direction faces the rotor rotation direction A. This results in the blocking magnet 74A being arranged in a direction perpendicular to the rotor rotation direction A, similar to Fig. 6B.

[0079] As shown in Figures 6A, 6B and 7, by providing a laid magnet 74 in which multiple small square blocking magnets 74A (permanent magnets) are laid on the surface of a laminated iron plate 72, the magnetic force absorption capacity can be increased compared to when only the laminated iron plate 72 is used, thereby more reliably blocking magnetic force.

[0080] Although not shown, in Figures 6A, 6B, and 7, magnetic or non-magnetic material can be interposed between adjacent blocking magnets 74A of the installed magnet 74. For example, as illustrated in (B) of Figure 6B, among the multiple blocking magnets 74A of the installed magnet 74, the blocking magnets 74A labeled S poles can be replaced with magnetic or non-magnetic material. In this case, the blocking magnets 74A labeled N poles and magnetic or non-magnetic material are arranged alternately. Alternatively, among the multiple blocking magnets 74A of the installed magnet 74, the blocking magnets 74A labeled N poles can be replaced with magnetic or non-magnetic material. In this case, the blocking magnets 74A labeled S poles and magnetic or non-magnetic material are arranged alternately.

[0081] 5 to 7, the length L of the overhang portion 42A of the rotor-side magnetic force shielding plate 42 and the length L of the overhang portion 44A of the stator-side magnetic force shielding plate 44 are preferably set in relation to the width W (see FIG. 5) of the gaps 64, 68 between adjacent bar magnets 66. That is, as described above, when the length L of the overhang portion 44A is considered in relation to the fact that the width of the gaps 64, 68 is preferably one to two times the width W of the bar magnets 66, 70 in the rotor rotation direction A, the length L of the overhang portion 44A is preferably about one-third to one-quarter the width W of the bar magnet 66 in the rotor rotation direction A.

[0082] Next, the operation of the magnetic rotating device 16 of the first embodiment of the present invention configured as described above will be described with reference to Figure 8. In the following description, the repulsive force that generates positive rotational energy that promotes rotation of the rotor 34 will be referred to as a "positive repulsive force," and the repulsive force that generates negative rotational energy that inhibits rotation of the rotor 34 will be referred to as a "negative repulsive force."

[0083] Figure 8(A) shows a state in which the bar magnet 66 of the rotor-side magnet section 38 and the bar magnet 70 of the fixed-side magnet section 40 are approaching each other due to the rotation of the rotor 34. Figure 8(B) shows a state in which the bar magnet 66 of the rotor-side magnet section 38 and the bar magnet 70 of the fixed-side magnet section 40 are aligned in a straight line. Figure 8(C) shows a state in which the bar magnet 66 of the rotor-side magnet section 38 and the bar magnet 70 of the fixed-side magnet section 40 are spaced apart. As a rotary drive source for rotating the rotor 34, for example, a motor 12 is used, as shown in Figure 1.

[0084] 8A , when the bar magnet 66 of the rotor-side magnet section 38 and the bar magnet 70 of the stator-side magnet section 40 approach each other as the rotor 34 rotates, the magnetic force of the downstream surface of the outer opposing surface 66A of the rotor-side magnet section 38 is blocked by the rotor-side magnetic force blocking plate 42 when viewed from the rotor rotation direction A. Also, the magnetic force of the upstream surface of the inner opposing surface 70A of the stator-side magnet section 40 is blocked by the stator-side magnetic force blocking plate 44. As a result, when the bar magnet 66 of the rotor-side magnet section 38 and the bar magnet 70 of the stator-side magnet section 40 approach each other, a negative repulsive force between the bar magnets 66, 70 is less likely to occur.

[0085] As shown in Figure 8 (B), the rotor 34 rotates in a state where negative repulsive forces are unlikely to occur between the bar magnets 66, 70 until the bar magnet 66 of the rotor side magnet section 38 and the bar magnet 70 of the fixed side magnet section 40 become linear.

[0086] 8C , when the bar magnet 66 of the rotor-side magnet section 38 and the bar magnet 70 of the stator-side magnet section 40 separate from each other, the upstream surface of the outer opposing surface 66A of the rotor-side magnet section 38 that does not have the rotor-side magnetic force shielding plate 42 is exposed when viewed from the rotor rotation direction A, so the magnetic force of the upstream surface is not shielded. Also, the downstream surface of the inner opposing surface 70A of the stator-side magnet section 40 that does not have the stator-side magnetic force shielding plate 44 is exposed, so the magnetic force of the downstream surface is not shielded. As a result, when the bar magnet 66 of the rotor-side magnet section 38 and the bar magnet 70 of the stator-side magnet section 40 separate from each other, a positive repulsive force is generated between the upstream surface of the bar magnet 66 and the downstream surface of the bar magnet 70.

[0087] 3 and 4, it is preferable to provide a rotor-side magnetic force shielding plate 42 on the downstream half of the bar magnet 66 of the rotor-side magnet section 38, and a fixed-side magnetic force shielding plate 44 on the upstream half of the bar magnet 70 of the fixed-side magnet section 40. This allows the rotor 34 to rotate in a state where negative repulsive force is unlikely to be generated until the bar magnets 66, 70 are aligned with each other. Then, when the bar magnet 66 of the rotor-side magnet section 38 passes the bar magnet 70 of the fixed-side magnet section 40 (passes the linear state), a positive repulsive force is generated.

[0088] In this way, by providing the rotor-side magnetic force shielding plate 42 and the stator-side magnetic force shielding plate 44, the magnetic rotating device 16 of the first embodiment can effectively extract only the positive repulsive force that promotes the rotation of the rotor 34, thereby making it easier to rotate the rotor 34. Therefore, the magnetic rotating device 16 of the first embodiment can generate a rotation assist force that assists the rotation force of the motor 12 that rotates the rotor 34.

[0089] Furthermore, the magnetic force shielding effect is enhanced by providing overhanging portions 42A, 44A on the rotor-side magnetic force shielding plate 42 and the stator-side magnetic force shielding plate 44. This makes it even more difficult for a negative repulsive force to be generated between the bar magnets 66, 70 when the bar magnets 66, 70 of the rotor-side magnet section 38 and the stator-side magnet section 40 approach each other.

[0090] That is, the magnetic rotating device 16 of the first embodiment of the present invention is designed to generate a positive repulsive force only when the bar magnet 66 of the rotor-side magnet section 38 and the bar magnet 70 of the fixed-side magnet section 40 move apart. This makes it possible to effectively extract only the positive repulsive force that occurs when the bar magnets 66, 70 move apart due to the rotation of the rotor 34, despite having a simple structure.

[0091] 2, the flywheel 46 is provided on the rotating shaft 28, which increases the moment of inertia of the rotor 34. This not only converts the positive repulsive force generated between the rotor-side magnet section 38 and the stator-side magnet section 40 into smooth rotational motion of the rotor 34, but also further increases the rotational assist force of the magnetic rotating device 16.

[0092] [Second embodiment of magnetic rotating device] As described in the magnetic rotating device 16 of the first embodiment of the present invention, there is a gap 64 (or gap 68) with a concave surface between adjacent bar magnets 66 (or bar magnets 70) of the rotor side magnet section 38 and the fixed side magnet section 40.

[0093] However, by having this gap 64 (or gap 68), as shown in Figures 3 and 4, the bar magnet 66 of the rotor-side magnet section 38 has all surfaces exposed except the outer facing surface 66A, i.e., the front surface 66B and rear surface 66C when viewed from the rotor rotation direction A. Similarly, the bar magnet 70 of the fixed-side magnet section 40 has all surfaces exposed except the inner facing surface 70A, i.e., the front surface 70B and rear surface 70C when viewed from the rotor rotation direction A.

[0094] Furthermore, although not due to the gap 64 (or gap 68), the left and right faces 66D and 66E of the bar magnet 66 that are perpendicular to the rotor rotation direction A are also exposed. Similarly, the left and right faces 70D and 70E of the bar magnet 70 that are perpendicular to the rotor rotation direction A are also exposed.

[0095] By not exposing the side surfaces of the bar magnets 66, 70, i.e., the front surfaces 66B, 70B, the rear surfaces 66C, 70C, the left surfaces 66D, 70D, and the right surfaces 66E, 70E, it is possible to make it more difficult for the attractive force to be generated between the bar magnets 66, 70. The attractive force between the bar magnets 66, 70 reduces the positive repulsive force that promotes rotation of the rotor 34. Therefore, by reducing the attractive force, the positive repulsive force can be more effectively extracted.

[0096] Therefore, in the magnetic rotating device 76 of the second embodiment of the present invention, the magnetic poles on the entire surface (all faces) of the rotor side magnet section 38 are made to have the same polarity as the outer magnetic pole, which is the magnetic pole of the outer opposing surface 66A, and the magnetic poles on the entire surface (all faces) of the fixed side magnet section 40 are made to have the same polarity as the inner magnetic pole, which is the magnetic pole of the inner opposing surface 70A, making it difficult for attractive force to occur between the rotor side magnet section 38 and the fixed side magnet section 40.

[0097] 9A is a side view of a magnetic rotating device 76 according to a second embodiment of the present invention, with the rotor rotation direction A facing forward, and FIG. 9B is a front cross-sectional view taken along line b-b in FIG. 9A. Note that the same members as those in the magnetic rotating device 16 according to the first embodiment will be described using the same reference numerals.

[0098] 9A, in a magnetic rotating device 76 according to a second embodiment of the present invention, a first auxiliary magnet 78 is provided so that the magnetic pole of the concave surface of the gap 64 formed between adjacent bar magnets 66 of the rotor-side magnet section 38 has the same polarity as the outer magnetic pole, which is the magnetic pole of the outer facing surface 66A of the bar magnet 66. Similarly, a first auxiliary magnet 78 is provided so that the magnetic pole of the concave surface of the gap 68 formed between adjacent bar magnets 70 of the fixed-side magnet section 40 has the same polarity as the inner magnetic pole, which is the magnetic pole of the inner facing surface 70A of the bar magnet 70.

[0099] 9B, in the bar magnet 66 of the rotor-side magnet section 38, a second auxiliary magnet 80 and a third auxiliary magnet 82 are provided on the left and right faces 66D and 66E as viewed in the rotor rotation direction A in Figures 3 and 4, respectively, so that they have the same polarity as the outer magnetic pole, which is the magnetic pole of the outer facing surface 66A of the bar magnet 66. Similarly, in the bar magnet 70 of the fixed-side magnet section 40, a second auxiliary magnet 80 and a third auxiliary magnet 82 are provided on the left and right faces 70D and 70E as viewed in the rotor rotation direction A in Figures 3 and 4, respectively, so that they have the same polarity as the inner magnetic pole, which is the magnetic pole of the inner facing surface 70A of the bar magnet 70.

[0100] The rotor-side magnet section 38 and the fixed-side magnet section 40 have the same mounting structure for mounting the first auxiliary magnet 78, second auxiliary magnet 80, and third auxiliary magnet 82 to the bar magnets 66, 70, so only the rotor-side magnet section 38 will be described in detail.

[0101] A first auxiliary magnet 78 is fitted and fixed into the bottom of the concave gap 64 between the bar magnets 66 of the rotor-side magnet section 38 with its north pole facing up (towards the outer facing surface 66A of the bar magnet 66). That is, of the north pole portion of the upper half of the bar magnet 66 and the south pole portion of the lower half, the front surface 66B and rear surface 66C of the south pole portion are hidden by the first auxiliary magnet 78 (see Figures 3 and 4). This makes the gap 64 the same as the outer magnetic pole (north pole) of the outer facing surface 66A of the bar magnet 66.

[0102] As shown in FIG. 9B , a second auxiliary magnet 80 and a third auxiliary magnet 82 are disposed between the bar magnet 66 and the pair of side covers 61, 61, via side plates 83 for securing the magnets. The side plates 83 are preferably made of a non-magnetic material such as stainless steel. The side plates 83 are supported by the cylindrical tube 50 of the rotor 34. In this case, the second auxiliary magnet 80 covers the north pole portion of the upper half of the bar magnet 66, which faces the outer facing surface 66A, and the south pole portion of the lower half, which faces the opposite side of the outer facing surface 66A. The left side 66D (see FIGS. 3 and 4 ) and right side 66E (see FIGS. 3 and 4 ) of the south pole portion, as viewed from the rotor rotation direction A, are hidden by the second auxiliary magnet 80. Furthermore, the north pole of the second auxiliary magnet 80 faces the north pole of the bar magnet 66. In addition, the third auxiliary magnet 82 is positioned so as to hide the south pole portion of the second auxiliary magnet 80, and the direction of the north and south poles of the third auxiliary magnet 82 is perpendicular to the direction of the north and south poles of the second auxiliary magnet 80, i.e., the magnetization direction is parallel to the rotation axis 28.

[0103] This allows the left surface 66D and the right surface 66E of the south pole portion of the bar magnet 66 to be the same as the outer magnetic pole (north pole) of the outer facing surface 66A of the bar magnet 66.

[0104] The purpose of the first auxiliary magnet 78, second auxiliary magnet 80, and third auxiliary magnet 82 is to ensure that the magnetic poles on the entire surface (all faces) of the rotor-side magnet section 38 have the same polarity as the outer magnetic pole, i.e., N pole. Therefore, as long as the exposed area of ​​the S pole in the rotor-side magnet section 38 is small, the arrangement of the first auxiliary magnet 78, second auxiliary magnet 80, and third auxiliary magnet 82 is not limited to the example arrangement shown in Figure 9(B).

[0105] The above detailed description is of the mounting structure of the first auxiliary magnet 78, second auxiliary magnet 80, and third auxiliary magnet 82 arranged in the rotor-side magnet section 38, but the same applies to the fixed-side magnet section 40. This makes it possible to extremely reduce the exposed area of ​​the south pole in the rotor-side magnet section 38 and the fixed-side magnet section 40, thereby extremely reducing the attractive force generated between the rotor-side magnet section 38 and the fixed-side magnet section 40. Therefore, the magnetic rotating device 76 of the second embodiment can produce a positive repulsive force that promotes rotation of the rotor 34 even more effectively than the magnetic rotating device 16 of the first embodiment.

[0106] As in the magnetic rotating device 76 of the second embodiment of the present invention described above, by providing the first auxiliary magnets 78, second auxiliary magnets 80, and third auxiliary magnets 82 in addition to the configuration of the rotor-side magnetic force shielding plate 42 and the stator-side magnetic force shielding plate 44, the positive repulsive force that promotes the rotation of the rotor 34 is further increased, making the rotation of the rotor 34 even easier. Therefore, the magnetic rotating device 76 of the second embodiment can generate an even greater rotational assist force that assists the rotational force of the motor 12 that rotates the rotor 34.

[0107] Figure 10 is a partially enlarged front cross-sectional view of a modified example of the magnetic rotating device 76 according to the second embodiment of the present invention shown in Figure 9. This modified example of the magnetic rotating device 76 according to the second embodiment is configured to further reduce the attractive force generated between the bar magnet 66 of the rotor-side magnet section 38 and the bar magnet 70 of the stator-side magnet section 40. That is, in addition to the second auxiliary magnet 80 and third auxiliary magnet 82, a fourth auxiliary magnet 84 and a ferromagnetic plate 86 are provided on the left faces 66D, 70D and right faces 66E, 70E of the bar magnets 66, 70.

[0108] 10, the arrangement of the second auxiliary magnet 80 is the same as in Fig. 9, but the south pole portion of the second auxiliary magnet 80 is hidden by a ferromagnetic plate 86 (e.g., an iron plate), and the third auxiliary magnet 82 and the fourth auxiliary magnet 84 are provided so that their south poles face the ferromagnetic plate 86. In addition, the ferromagnetic plate 86, the third auxiliary magnet 82, and the fourth auxiliary magnet 84 are fixed to each other by a side plate 83.

[0109] In this way, by providing the ferromagnetic plate 86 on the south pole side of the third auxiliary magnet 82 and the fourth auxiliary magnet 84, which should not be exposed, the ferromagnetic plate 86 has the effect of blocking the magnetic force from the south pole side of the third auxiliary magnet 82 and the fourth auxiliary magnet 84. This makes it possible to extremely reduce the attractive force generated between the rotor-side magnet section 38 and the stator-side magnet section 40. Therefore, the modified example of the magnetic rotating device 76 of the second embodiment shown in Figure 10 can generate an even greater rotational assist force that assists the rotational force of the motor 12 that rotates the rotor 34 than the magnetic rotating device 76 of the second embodiment shown in Figure 9.

[0110] However, if the magnetic poles on the entire surface (all faces) of the rotor side magnet section 38 are made to have the same polarity as the outer magnetic pole, and the magnetic poles on the entire surface (all faces) of the fixed side magnet section 40 are made to have the same polarity as the inner magnetic pole, the repulsive force between the bar magnet 66 of the rotor side magnet section 38 and the bar magnet 70 of the fixed side magnet section 40 will become even stronger, and there is a risk that the bar magnets 66, 70 will become misaligned.

[0111] Therefore, as shown in Figure 11, the gaps 64 between the bar magnets 66 of the rotor-side magnet section 38 and the gaps 68 between the bar magnets 70 of the stator-side magnet section 40 are filled with a filler 88 of a non-magnetic material (e.g., plastic). This makes it less likely that misalignment will occur between the bar magnets 66, 70. In this case, it is preferable to fill not only the gaps 64 between the bar magnets 66 of the rotor-side magnet section 38 and the gaps 68 between the bar magnets 70 of the stator-side magnet section 40 with the filler 88 of a non-magnetic material (e.g., plastic), but also the gaps between the rotor-side magnetic force shielding plates 42 arranged in the rotational direction (see Figures 11, 8, etc.). Similarly, it is preferable to fill the gaps between the stator-side magnetic force shielding plates 44 arranged in the rotational direction with the filler 88 of a non-magnetic material (e.g., plastic) (see Figures 11, 8, etc.).

[0112] 11, it is preferable to provide a rotor-side band 96 that presses the outer opposing surfaces 66A of the multiple bar magnets 66 (bar magnets 66 with rotor-side magnetic force shielding plates 42 provided) that make up the circular rotor-side magnet section 38 against the cylindrical tube 50. The rotor-side band 96 is formed of a cylindrical, hard material that is non-magnetic (e.g., stainless steel or plastic), and both ends of the rotor-side band 96 in the width direction are fixed to the side cover 52. This makes it possible to prevent the bar magnets 66 from peeling off from the cylindrical tube 50, even when the bar magnets 66 are fixed to the cylindrical tube 50 made of a ferromagnetic material only by magnetic force.

[0113] Similarly, it is preferable to provide a fixed-side band 98 that presses the inner opposing surfaces 70A of the multiple bar magnets 70 (bar magnets 70 with fixed-side magnetic force shielding plates 44 provided) that make up the circular fixed-side magnet section 40 against the inner cylinder 58. The fixed-side band 98 is similar to the rotor-side band 96 and is formed from a cylindrical hard material such as a non-magnetic material (e.g., stainless steel or plastic), and both widthwise ends of the fixed-side band 98 are fixed to the side cover 61 described above.

[0114] In this way, by filling the gaps 64, 68 with filler 88 and providing a rotor side band 96 and a fixed side band 98, it is possible to reliably prevent the bar magnet 70 from shifting out of position or peeling off from the inner tube 58, even when the bar magnet 70 is fixed to the inner tube 58 made of a ferromagnetic material using magnetic force alone.

[0115] 11, it is preferable to fill the filler 88 so that the gaps 64, 68 are completely filled with the filler 88, that is, so that the filler 88 is flush with the outer facing surface 66A of the bar magnet 66 and the inner facing surface 70A of the bar magnet 70. This prevents gaps from occurring between the rotor side band 96 and the filler 88, allowing the rotor side band 96 and the rotor side band 96 to be firmly fixed.

[0116] [Third embodiment of magnetic rotating device] Figure 12 is a front cross-sectional view of a magnetic rotating device 90 according to a third embodiment of the present invention, and the same members as those in the magnetic rotating device 16 of the first embodiment and the magnetic rotating device 76 of the second embodiment will be described using the same reference numerals.

[0117] A magnetic rotating device 90 according to a third embodiment of the present invention uses a flywheel 92 as the rotor 34 of the rotor-side magnet section 38, which has a diameter larger than the rotor diameter and can increase the moment of inertia in the rotor rotation direction A.

[0118] 12, the center of a disk-shaped flywheel 92 is fitted and supported on the rotating shaft 28, and the cylindrical tube 50 described above is fixed to the outer periphery of the flywheel 92. The rest of the configuration is the same as that of the magnetic rotating device 76 of the second embodiment.

[0119] As described above, the magnetic rotating device 90 of the third embodiment of the present invention uses a flywheel 92 as the rotor 34, in addition to the configuration of the rotor-side magnetic force shielding plate 42 and the stator-side magnetic force shielding plate 44, and the configuration of the first auxiliary magnet 78, the second auxiliary magnet 80, and the third auxiliary magnet 82. This allows the positive repulsive force generated between the rotor-side magnet section 38 and the stator-side magnet section 40 to be directly transmitted to the peripheral portion, which is the radial end, of the flywheel 92. Therefore, the positive repulsive force can be more effectively used as energy to promote rotation of the rotor 34 than when the flywheel 92 is provided on the rotating shaft 28. This allows the rotor 34 to rotate more smoothly.

[0120] The magnetic rotating device 90 of the third embodiment shown in FIG. 12 is obtained by replacing the rotor 34 of the magnetic rotating device 76 of the second embodiment of the present invention with a flywheel 92, but the rotor 34 of the magnetic rotating device 16 of the first embodiment of the present invention may also be replaced with a flywheel 92.

[0121] [Fourth embodiment of magnetic rotating device] Figure 13 is a front cross-sectional view of a magnetic rotating device 94 according to a fourth embodiment of the present invention, which is configured so that a plurality of the magnetic rotating devices of the present invention described above are connected in series.

[0122] The magnetic rotating device 94 of the fourth embodiment of the present invention can be variously combined with the magnetic rotating device 16 of the first embodiment, the magnetic rotating device 76 of the second embodiment, and the magnetic rotating device 90 of the third embodiment. In Fig. 13, one magnetic rotating device 76 of the second embodiment and two magnetic rotating devices 90 of the third embodiment are combined.

[0123] As a result, according to the magnetic rotating device 94 of the fourth embodiment of the present invention, since a plurality of magnetic rotating devices 76, 90 are connected in series, the rotation of the magnetic rotating device 94 can be made even more efficient.

[0124] The magnetic rotating devices 16, 76, 90, 94 of the present invention and the power generating device 10 incorporating them have been described above, but the magnetic rotating devices incorporated into the power generating device 10 can also incorporate various combinations of the magnetic rotating devices 16, 76, 90, 94 of the first, second, third, and fourth embodiments described above.

[0125] According to the magnetic rotating device 94 of the fourth embodiment of the present invention, a plurality of magnetic rotating devices 76, 90 are connected in series, but the same effect can be obtained by arranging a plurality of bar magnets 66, 70 in the axial direction of the rotating shaft 28 in one magnetic rotating device 16, 76, 90 described in the first to third embodiments.

[0126] For example, a plurality (e.g., three) of the bar magnets 66 and 70 (provided with the rotor-side magnetic force shielding plate 42 and the fixed-side magnetic force shielding plate 44) shown in Figures 2(B) and 9(B) are arranged in the axial direction of the rotating shaft 28.

[0127] FIG. 14 is an overall configuration diagram of a power generating device 10 according to a fifth embodiment of the present invention, with FIG. 14A showing the motor section, FIG. 14B showing the magnetic rotating device 100, and FIG. 14C showing details of the generator section. The basic structure of the magnetic rotating device 100 is similar to that of the magnetic rotating devices 16, 76, 90, and 94. In the fifth embodiment, the inner rotor corresponding to the inner cylinder 58 and rotor-side magnet section 38 of the magnetic rotating devices 16, 76, 90, and 94 of the first to fourth embodiments rotates, while the outer cylinder 56 and fixed-side magnet section 40 are fixed. However, the rotation of the outer rotor corresponding to the outer cylinder 56 and fixed-side magnet section 40 allows for rotation of the outer rotor. Rotation of the outer rotor corresponding to the outer cylinder 56 and fixed-side magnet section 40 increases rotational energy, making it even more efficient.

[0128] The power generating device 10 is mainly composed of a motor 12, a generator 14 that generates electricity by rotating a generator rotor 14A using the motor 12 as a rotational drive source, and a magnetic rotating device 100 of the present invention that is provided between the motor 12 and the generator rotor 14A. The motor 12 is supported on a base 18 via a motor mounting base 22, and the generator 14 is supported on the base 18 via a generator mounting base 24, with the motor transmission unit 110 and rotor transmission unit 140 supported on the base 18.

[0129] As shown in Figure 14A, the rotating shaft 12A of the motor 12 and one end of a stepped shaft 130 that passes through the motor unit, magnetic rotating device 100, and generator unit are connected by a joint 30 on the motor unit side. In the motor unit, the stepped shaft 130 is rotatably supported from the base 18 by magnetic bearings 126 and 127. A pulley 112 is fixed to the stepped shaft 130 between the magnetic bearing 126 and the joint 30. A joint 230 is provided between the magnetic bearings 126 and 127, allowing the rotating shaft 12A of the motor 12 and the stepped shaft 130 to be connected and disconnected. A disc brake 115 fixed to the base 18 is provided between the magnetic bearing 127 and the magnetic rotating device 100, allowing the stepped shaft 130 to be connected and disconnected.

[0130] The hollow shaft 131 is disposed with a gap between it and the stepped shaft 130, and is rotatably supported by a magnetic bearing 128 on the base 18. A disk brake 118 fixed to the base 18 is provided on the motor 12 side of the hollow shaft 131, allowing the hollow shaft 131 to be locked and unlocked. A pulley 114 is fixed to the hollow shaft 131 between the disk brake 118 and the magnetic bearing 128.

[0131] In the motor transmission unit 110, a stepped shaft 119 is rotatably supported by magnetic bearings 116 and 117 on a base 18. At one end of the stepped shaft 119 on the motor 12 side, a pulley 111 is arranged opposite a pulley 112, and power is transmitted between the stepped shaft 119 and a stepped shaft 130 via a belt (not shown). At one end of the stepped shaft 119 on the magnetic rotating device 100 side, a pulley 113 is arranged opposite a pulley 114, and power is transmitted between the stepped shaft 119 and a hollow shaft 131 via a belt (not shown). Note that power transmission may be performed using gears instead of a belt (not shown).

[0132] As shown in FIG. 14B , the magnetic rotating device 100 has a similar configuration to the magnetic rotating devices 16, 76, 90, and 94, and only the differences will be described. For example, the inner ring magnet section 136 of the magnetic rotating device 100 corresponds to the rotor-side magnet section 38 of the magnetic rotating device 76 and is fixed to the stepped shaft 130 with a key groove 137. An inner ring flywheel 133 is fixed to the stepped shaft 130 with a key groove 138, forming the inner ring rotor. The outer ring magnet section 135 corresponds to the fixed-side magnet section 40 and is fixed to the outer ring cover band 134. Furthermore, the rotor-side magnetic force shielding plate 42 of the magnetic rotating device 76 corresponds to the magnetic force shielding plate of the inner ring magnet section 136, and the fixed-side magnetic force shielding plate 44 corresponds to the magnetic force shielding plate of the outer ring magnet section 135. The outer ring cover band 134 and hollow shaft 131 are fixed via the outer ring flywheel 132, forming the outer ring rotor. The outer flywheel 132 and the inner flywheel 133 are provided on both sides of the inner magnet portion 136 and the outer magnet portion 135 in the axial direction.

[0133] The outer ring weight plate 235 is attached to the outer ring cover band 134 so as to compensate for the mass of the outer ring flywheel 132. Since the outer ring weight plate 235 also serves as the outer ring flywheel 132, it is preferable that it be wrapped with a non-magnetic material, for example, a non-magnetic stainless steel band.

[0134] As shown in Figure 14C, the rotating shaft 14B of the generator rotor 14A of the generator 14 and one end of the stepped shaft 130 on the generator unit side are connected by a joint 30. In the generator unit, the stepped shaft 130 is rotatably supported from the base 18 by magnetic bearings 145 and 146. A pulley 141 is fixed to the stepped shaft 130 between the magnetic bearing 145 and the joint 30. A joint 232 is provided between the magnetic bearings 145 and 146, allowing the stepped shaft 130 and the rotating shaft 14B to be connected and disconnected. A disc brake 148 fixed to the base 18 is provided between the magnetic bearing 146 and the magnetic rotating device 100, allowing the stepped shaft 130 to be connected and disconnected.

[0135] The generator side of the hollow shaft 131 is disposed with a gap between it and the stepped shaft 130, similar to the motor 12 side, and is rotatably supported by a magnetic bearing 147 on the base 18. A disc brake 149 fixed to the base 18 is provided on the generator 14 side of the hollow shaft 131, allowing the hollow shaft 131 to be locked and unlocked. A pulley 143 is fixed to the hollow shaft 131 between the disc brake 149 and the magnetic bearing 147.

[0136] In the rotor transmission unit 140, the hollow shaft 131 is rotatably supported by magnetic bearings 150 and 151 on the base 18. At one end of the stepped shaft 152 on the generator 14 side, a pulley 142 is arranged opposite the pulley 141, and power is transmitted between the stepped shaft 130 and the stepped shaft 130 via a belt (not shown). At one end of the stepped shaft 152 on the magnetic rotating device 100 side, a pulley 144 is arranged opposite the pulley 143, and power is transmitted between the stepped shaft 152 and the hollow shaft 131 via a belt (not shown).

[0137] The following mainly describes the procedure for rotating the outer rotor, which is made up of the outer magnet part 135 and the outer flywheel 132. (1) Release the motor side joint 230 and the generator side joint 232. (2) Activate the disc brakes 115 and 148 to fix the stepped shaft 130, thereby fixing the inner rotor, which is made up of the inner magnet part 136 and the inner flywheel 133. (3) Release the disc brakes 118 and 149 to allow the outer rotor to rotate.

[0138] The rotation of the rotary shaft 12A driven by the motor 12 is transmitted to the pulley 111 via the joint 30, the pulley 112, and a belt (not shown). The rotation of the pulley 111 is transmitted to the pulley 114 via the pulley 113 and a belt (not shown), causing the hollow shaft 131 to rotate. The rotation of the hollow shaft 131 causes the outer rotor, which is composed of the outer ring magnet portion 135 and the outer ring flywheel 132, to rotate.

[0139] The rotation of the outer rotor is transmitted to pulleys 144 and 142 of the rotor transmission unit 140 via a pulley 143 fixed to the hollow shaft 131 and a belt (not shown). The rotation of pulley 142 is transmitted to a belt (not shown) and pulley 141, and then to the rotating shaft 14B and the power-generating rotor 14A to drive the power generator 14. The power generator 10 in which the outer rotor rotates is configured as described above.

[0140] In the fifth embodiment, it is also possible to fix the outer rotor and rotate the inner rotor, as follows: (1) Fix the joint 230 on the motor side and the joint 232 on the generator side. (2) Fix the disc brake 118 and the disc brake 149 to prevent the outer rotor from rotating. (3) Release the disc brake 115 and the disc brake 148 to allow the stepped shaft 130 to rotate, thereby allowing the inner rotor, which is made up of the inner magnet part 136 and the inner flywheel 133, to rotate. (4) Remove the belts (not shown) that transmit rotation from the pulley 112 to the pulley 111 and from the pulley 142 to the pulley 141.

[0141] Rotation of the rotating shaft 12A driven by the motor 12 is transmitted to the stepped shaft 130 via the joint 30, the pulley 112, and the joint 230. The inner rotor, which is composed of the inner magnet portion 136 and the inner flywheel 133, rotates as the stepped shaft 130 rotates. On the other hand, the outer rotor, which is composed of the outer magnet portion 135 and the outer flywheel 132, is fixed because the disc brake 118 and the disc brake 149 are fixed, and functions similarly to the outer cylinder 56 and the fixed-side magnet portion 40 of the magnetic rotating devices 16, 76, 90, and 94. Note that the fifth embodiment uses magnetic bearings 126, 127, 128, 116, 117, 147, 146, 145, 150, and 151 to reduce friction and improve efficiency, but if the effect of friction is small, the power generating device may be configured using normal radial bearings.

[0142] 15 and 16 show the case where magnetic bearings 126, 127, 128, 116, 117, 147, 146, 145, 150, and 151 are configured with magnet units. FIG. 15 is a side cross-sectional view of the magnetic bearing in the fifth embodiment, and FIG. 16 is a front cross-sectional view of the magnetic bearing in the fifth embodiment. The basic structure is similar to that of the magnetic rotating device 76 in the second embodiment (the configuration in FIG. 10 ), and detailed description will be omitted. However, the basic structure is mainly composed of a rotor-side magnet unit 38, a fixed-side magnet unit 40, a rotor-side magnetic force shielding plate 42, and a fixed-side magnetic force shielding plate 44. The fixed-side magnet unit 40 is the fixed side, and the rotor-side magnet unit 38 is the rotating side that fits onto the stepped shaft 130, the stepped shaft 119, the hollow shaft 131, and the stepped shaft 152.

[0143] The bar magnet 66 constitutes the rotor-side magnet section 38, and the bar magnet 70 constitutes the fixed-side magnet section 40. A second auxiliary magnet 80, a third auxiliary magnet 82, and a fourth auxiliary magnet 84 are provided on the left and right sides of the bar magnets 66 and 70. The fixed-side magnet section 40 is fixed by fixed-side bands 160, 161, and 162 made of a cylindrical hard material such as non-magnetic material (e.g., stainless steel or plastic). The rotor-side magnet section 38 is fixed by rotor-side bands 170, 171, and 172 similar to the fixed-side bands 160, 161, and 162.

[0144] FIG. 17 shows a modified example of the fifth embodiment, with FIG. 17(a) being a diagram of the motor section and FIG. 17(b) being a diagram of the generator section. In the motor section, the rotating shaft 12A of the motor 12 is elongated and supported at both ends by magnetic bearings 153 and 154. Similarly, in the generator section, the rotating shaft 14B of the generator rotor 14A is elongated and supported at both ends by magnetic bearings 155 and 156. The basic structures of the magnetic bearings 153, 154, 155, and 156 are the same as those shown in FIGS. 15 and 16. This enables high-speed rotation, eliminates frictional resistance, and further improves efficiency. If the rotating shaft 12A is not elongated, the magnetic bearings 153 and 154 can be configured to be supported at both ends inside the motor 12. Similarly, if the rotating shaft 14B is not elongated, the magnetic bearings 155 and 156 can be configured to be supported at both ends inside the generator 14.

[0145] 10... power generating device, 12... motor, 12A... rotating shaft, 14... generator, 14A... power generating rotor, 14B... rotating shaft, 16, 76, 90, 94... magnetic rotating device, 18... base, 18A... vibration damping member, 18B... fixing bolt, 20... device frame, 22... motor mounting base, 24... generator mounting base, 26... bearing, 28... rotating shaft, 30... joint, 32... brake means, 34... rotor, 34 A...Rotor main body, 34B...Fitting tube, 34C...Outer ring tube, 36...Fixed portion, 38...Rotor side magnet portion, 40...Fixed side magnet portion, 42...Rotor side magnetic force shielding plate, 42A...Eaves portion, 44...Fixed side magnetic force shielding plate, 44A...Eaves portion, 46...Flywheel, 48...Shaft collar, 50...Cylindrical tube, 52...Side cover, 54...Connecting bolt, 56...Outer tube, 58...Inner tube, 58A...Circular block plate , 60...connecting bolt, 61...side cover, 62...connection adjustment bolt, 63...connecting bolt, 64...gap portion, 65...washer, 66...bar magnet (first bar magnet), 66A...outer facing surface, 66B...front surface, 66C...rear surface, 66D...left surface, 66E...right surface, 66F...bottom surface, 67...step surface, 68...gap portion, 70...bar magnet (second bar magnet), 70A...inner facing surface, 70B...front surface, 70C... Rear surface, 70D...left surface, 70E...right surface, 70F...bottom surface, 71...step surface, 72...laminated iron plate, 74...laying magnet, 74A...blocking magnet, 78...first auxiliary magnet, 80...second auxiliary magnet, 82...third auxiliary magnet, 83...side plate, 84...fourth auxiliary magnet, 86...ferromagnetic plate, 88...filler, 92...flywheel, 96...rotor side band, 98...fixed side band, A...rotor rotation direction, M,P...center line, 100...magnetic rotating device, 110...motor transmission part, 111...pulley, 112...pulley, 113...pulley, 114...pulley, 115...disc brake, 116...magnetic bearing, 117...magnetic bearing, 118...disc brake, 119...stepped shaft, 126...magnetic bearing, 127...magnetic bearing, 128...magnetic bearing, 130...stepped shaft, 131...hollow shaft, 132...outer ring flywheel, 133...inner ring flywheel, 134...outer ring cover band, 135...outer ring magnet part, 136...inner ring magnet part, 137...key groove, 138...key groove, 140...rotor transmission part, 141...pulley, 142...pulley, 143...pulley, 144...pulley, 145...magnetic bearing, 146...magnetic bearing, 147...magnetic bearing, 148...disc brake, 149...disc brake, 150...magnetic bearing, 151...magnetic bearing, 152...stepped shaft, 153...magnetic bearing, 154...magnetic bearing, 155...magnetic bearing, 156...magnetic bearing, 160...fixed side band, 161...fixed side band, 162...fixed side band, 170...rotor side band, 171...rotor side band, 172...rotor side band, 230...joint, 232...joint, 235...outer ring weight plate

Claims

1. A magnetic rotating device that uses the magnetic force of a magnet as a rotating force, comprising: a rotating shaft supported for free rotation; a circular rotor fixed to the rotating shaft and rotating around the axis of the rotating shaft; a fixed section fixed to an apparatus frame and provided outside the rotor so as to surround the rotor, the fixed section having an inner circumferential surface concentric with the rotor; and a rotor-side magnet section consisting of a plurality of first bar magnets arranged on the outer circumferential surface of the rotor to form equally spaced gaps along the direction of rotation of the rotor, the magnetization directions of the first bar magnets being aligned along a radial direction perpendicular to the axis of the rotating shaft, and the outer magnetic poles of the first bar magnets on the outside in the radial direction all having the same polarity; a fixed-side magnet section consisting of a plurality of second bar magnets, the second bar magnets being arranged on the inner peripheral surface of the fixed section with equally spaced gaps in the circumferential direction, the magnetization directions of the second bar magnets being aligned along a radial direction perpendicular to the axis of the rotating shaft, and arranged such that the inner magnetic pole of the second bar magnets facing the rotor-side magnet section has the same polarity as the outer magnetic pole; a rotor-side magnetic force blocking plate for blocking the magnetic force of the first bar magnet is provided on a downstream surface, as viewed from the direction of rotation of the rotor, of an outer opposing surface, which is a surface of the first bar magnet of the fixed-side magnet section facing the second bar magnet of the first bar magnet of the rotor-side magnet section; and a fixed-side magnetic force blocking plate for blocking the magnetic force of the first bar magnet is provided on an upstream surface, as viewed from the direction of rotation of the rotor, of an inner opposing surface, which is a surface of the second bar magnet of the fixed-side magnet section facing the first bar magnet of the second bar magnet of the rotor-side magnet section, A first auxiliary magnet is provided so that the magnetic pole of the concave surface of the gap formed between adjacent first bar magnets of the rotor side magnet section has the same polarity as the outer magnetic pole, which is the magnetic pole of the outer facing surface of the first bar magnet of the rotor side magnet section, and the magnetic pole of the concave surface of the gap formed between adjacent second bar magnets of the fixed side magnet section has the same polarity as the inner magnetic pole, which is the magnetic pole of the inner facing surface of the second bar magnet of the fixed side magnet section,a second auxiliary magnet on the rotor side is provided on the left and right faces as viewed from the direction of rotation of the rotor so as to hide the magnetic pole portion of the first bar magnet opposite the outer magnetic pole, and the second auxiliary magnets on the rotor side are arranged so that their magnetization directions are aligned along the radial direction and all of the outer magnetic poles in the radial direction have the same polarity as the outer magnetic pole; a second auxiliary magnet on the fixed portion side is provided on the left and right faces as viewed from the direction of rotation of the rotor so as to hide the magnetic pole portion of the second bar magnet opposite the inner magnetic pole, and the second auxiliary magnets on the fixed portion side are arranged so that their magnetization directions are aligned along the radial direction and all of the inner magnetic poles in the radial direction have the same polarity as the inner magnetic pole; a third auxiliary magnet on the rotor side is provided on the left and right faces as viewed in the direction of rotation of the rotor so as to hide at least a magnetic pole portion of the radially inner magnetic pole of the second auxiliary magnet on the rotor side, the magnetization direction of the third auxiliary magnet on the rotor side is parallel to the rotation axis, and when the third auxiliary magnet on the rotor side is disposed on the left face, a magnetic pole portion of the same polarity as the outer magnetic pole is arranged on the left face side, and when the third auxiliary magnet on the rotor side is disposed on the right face side, a magnetic pole portion of the same polarity as the outer magnetic pole is arranged on the right face side; A magnetic rotating device in which a third auxiliary magnet on the fixed part side is provided on the left and right sides as viewed from the rotation direction of the rotor so as to hide at least the magnetic pole portion of the outer magnetic pole in the radial direction of the second auxiliary magnet on the fixed part side, the magnetization direction of the third auxiliary magnet on the fixed part side is parallel to the rotation axis, and when the third auxiliary magnet on the fixed part side is positioned on the left side, a magnetic pole portion of the same polarity as the inner magnetic pole is arranged on the left side, and when it is positioned on the right side, a magnetic pole portion of the same polarity as the inner magnetic pole is arranged on the right side.

2. A magnetic rotating device as described in claim 1, wherein the rotor-side magnetic force shielding plate is provided on the downstream surface of half of the outer facing surface of the first bar magnet, and the fixed-side magnetic force shielding plate is provided on the upstream surface of half of the inner facing surface of the second bar magnet.

3. A magnetic rotating device as described in claim 1, wherein the rotor-side magnetic force shielding plate has an overhanging portion extending beyond the end of the downstream surface of the first bar magnet, and the fixed-side magnetic force shielding plate has an overhanging portion extending beyond the end of the upstream surface of the second bar magnet.

4. A magnetic rotating device according to claim 1, wherein the rotor-side magnetic force shielding plate and the fixed-side magnetic force shielding plate are made of a ferromagnetic material.

5. A magnetic rotating device according to claim 1, wherein the rotor-side magnetic force shielding plate and the fixed-side magnetic force shielding plate are composed of an iron plate and a plurality of magnets.

6. A magnetic rotating device according to any one of claims 1 to 5, wherein the gap is filled with a non-magnetic material.

7. A magnetic rotating device according to any one of claims 1 to 5, in which a flywheel is provided on the rotating shaft.

8. A magnetic rotating device according to any one of claims 1 to 5, which uses a flywheel as the rotor.

9. A magnetic rotating device comprising a plurality of magnetic rotating devices according to any one of claims 1 to 5 connected in series.

10. A power generating device comprising: a motor; a generator that generates electricity by rotating a power generating rotor using the motor as a rotational drive source; and a magnetic rotating device according to any one of claims 1 to 5 that is provided between the motor and the power generating rotor.

11. A magnetic rotating device that uses the magnetic force of a magnet as a rotational force, comprising: a hollow shaft 131 supported for free rotation; an outer ring cover band 134 fixed to the hollow shaft and rotating around the axis of the hollow shaft; an outer ring magnet section 135 fixed to the outer ring cover band; and an outer ring magnet section consisting of a plurality of second bar magnets, the second bar magnets being arranged on the inner peripheral surface of the outer ring cover band to form equally spaced gaps in the circumferential direction, the magnetization directions of the second bar magnets being aligned along a radial direction perpendicular to the axis of the hollow shaft, and arranged so that the inner magnetic pole of the second bar magnet facing the rotor side magnet section has the same polarity as the outer magnetic pole. an inner ring magnet section 136 comprising a plurality of first bar magnets, the first bar magnets being arranged on the inner peripheral surface of the outer ring cover band with equally spaced gaps formed along the rotation direction of the outer ring cover band, the magnetization directions of the first bar magnets being aligned along a radial direction perpendicular to the axis of the hollow shaft, and arranged so that the outer magnetic poles of the first bar magnets on the outside in the radial direction all have the same polarity; an outer facing surface of the first bar magnet of the inner ring magnet section facing the second bar magnet of the outer ring magnet section, the downstream surface as viewed from the rotation direction of the outer ring cover band being provided with a magnetic force blocking plate on the inner ring magnet section side that blocks the magnetic force of the first bar magnet; and an inner facing surface of the second bar magnet of the outer ring magnet section facing the first bar magnet of the inner ring magnet section being provided with a magnetic force blocking plate on the outer ring cover band side that blocks the magnetic force of the first bar magnet, A first auxiliary magnet is provided so that the magnetic pole of the concave surface of the gap formed between adjacent first bar magnets of the inner ring magnet section has the same polarity as the outer magnetic pole, which is the magnetic pole of the outer facing surface of the first bar magnet of the inner ring magnet section, and the magnetic pole of the concave surface of the gap formed between adjacent second bar magnets of the outer ring magnet section has the same polarity as the inner magnetic pole, which is the magnetic pole of the inner facing surface of the second bar magnet, andA second auxiliary magnet of the inner ring magnet part is provided on the left and right faces as viewed from the direction of rotation of the outer ring cover band so as to hide the magnetic pole portion of the first bar magnet opposite the outer magnetic pole, and the second auxiliary magnets of the inner ring magnet part are arranged so that their magnetization directions are aligned along the radial direction and all of the outer magnetic poles in the radial direction have the same polarity as the outer magnetic pole; A second auxiliary magnet of the outer ring magnet part is provided on the left and right faces as viewed from the direction of rotation of the outer ring cover band so as to hide the magnetic pole portion of the second bar magnet opposite the inner magnetic pole, and the second auxiliary magnets of the outer ring magnet part are arranged so that their magnetization directions are aligned along the radial direction and all of the inner magnetic poles in the radial direction have the same polarity as the inner magnetic pole; A third auxiliary magnet of the inner ring magnet part is provided on the left and right faces as viewed from the direction of rotation of the outer ring cover band so as to hide at least the magnetic pole portion of the radially inner magnetic pole of the second auxiliary magnet of the inner ring magnet part, the magnetization direction of the third auxiliary magnet of the inner ring magnet part is parallel to the cavity axis, and when the third auxiliary magnet of the inner ring magnet part is arranged on the left face, a magnetic pole portion of the same polarity as the outer magnetic pole is arranged on the left face side, and when the third auxiliary magnet of the inner ring magnet part is arranged on the right face, a magnetic pole portion of the same polarity as the outer magnetic pole is arranged on the right face side, A magnetic rotating device in which a third auxiliary magnet of the outer ring magnet part is provided on the left and right sides when viewed from the rotation direction of the outer ring cover band so as to hide at least the magnetic pole portion of the radially outer magnetic pole of the second auxiliary magnet, and the magnetization direction of the third auxiliary magnet of the outer ring magnet part is parallel to the cavity axis, and when the third auxiliary magnet of the outer ring magnet part is arranged on the left side, a magnetic pole portion of the same polarity as the inner magnetic pole is arranged on the left side, and when it is arranged on the right side, a magnetic pole portion of the same polarity as the inner magnetic pole is arranged on the right side.

12. The magnetic rotating device according to claim 11, wherein the outer ring cover band and the hollow shaft are fixed via an outer ring flywheel to form an outer ring rotor.

13. A magnetic rotating device according to claim 12, wherein the outer ring flywheels are provided on both sides of the outer ring magnet portion in the axial direction.

14. A magnetic rotating device as described in claim 11, comprising: a stepped shaft to which the inner ring magnet portion is fixed, which is arranged with a gap between it and the hollow shaft and which is rotatably supported from a base; and a disk brake (115, 148) that can fix and release the stepped shaft, and which operates the disk brake (115, 148) to rotate an outer ring rotor composed of the outer ring magnet portion and an outer ring flywheel.

15. A power generating device comprising: a motor; a generator that generates electricity by rotating a power generating rotor using the motor as a rotational drive source; a magnetic rotating device as described in claim 14 that is provided between the motor and the power generating rotor; a disk brake (118, 149) that can fix and release the hollow shaft; a coupling (230) that can connect and release the rotating shaft (12A) of the motor and the stepped shaft; a disk brake (115, 148) that can fix and release the stepped shaft; and a coupling (232) that can connect and release the rotating shaft (14B) of the power generating rotor and the stepped shaft.

16. A bearing supporting the hollow shaft and the stepped shaft has a rotor, the bearing comprising a plurality of first bar magnets arranged on the outer circumferential surface of the rotor with equally spaced gaps formed along the direction of rotation of the rotor, the magnetization directions of the first bar magnets aligned along a radial direction perpendicular to the axis of the rotating shaft, and the first bar magnets arranged so that the outer magnetic poles of the first bar magnets on the outside in the radial direction all have the same polarity; and a fixed-side magnet section comprising a plurality of second bar magnets arranged on the inner circumferential surface of the fixed section side with equally spaced gaps formed in the circumferential direction, the magnetization directions of the second bar magnets aligned along a radial direction perpendicular to the axis of the rotor, and the second bar magnets arranged so that the inner magnetic pole of the second bar magnets facing the rotor-side magnet section has the same polarity as the outer magnetic pole. a rotor-side magnetic force blocking plate for blocking the magnetic force of the first bar magnet is provided on the downstream surface, as viewed from the direction of rotation of the rotor, of an outer facing surface, which is the surface of the first bar magnet of the rotor-side magnet section facing the second bar magnet of the fixed-side magnet section; and a fixed-side magnetic force blocking plate for blocking the magnetic force of the first bar magnet is provided on the upstream surface, as viewed from the direction of rotation of the rotor, of an inner facing surface, which is the surface of the second bar magnet of the fixed-side magnet section facing the first bar magnet of the rotor-side magnet section; and a first auxiliary magnet is provided so that the magnetic pole of the concave surface of the gap formed between adjacent first bar magnets of the rotor-side magnet section has the same polarity as the outer magnetic pole, which is the magnetic pole of the outer facing surface of the first bar magnet of the rotor-side magnet section, and so that the magnetic pole of the concave surface of the gap formed between adjacent second bar magnets of the fixed-side magnet section has the same polarity as the inner magnetic pole, which is the magnetic pole of the inner facing surface of the second bar magnet of the fixed-side magnet section; a rotor-side second auxiliary magnet is provided on the left and right faces of the first bar magnet as viewed from the direction of rotation of the rotor so as to hide the magnetic pole portion opposite to the outer magnetic pole, and the rotor-side second auxiliary magnet is arranged so that the magnetization direction is aligned along the radial direction and all of the outer magnetic poles in the radial direction have the same polarity as the outer magnetic pole;a second auxiliary magnet on the fixed portion side is provided on the left and right surfaces as viewed from the direction of rotation of the rotor so as to hide the magnetic pole portion of the second bar magnet opposite to the inner magnetic pole, and the second auxiliary magnet on the fixed portion side is arranged so that its magnetization direction is aligned along the radial direction and all of the inner magnetic poles in the radial direction have the same polarity as the inner magnetic pole; a third auxiliary magnet on the rotor side is provided on the left and right surfaces as viewed from the direction of rotation of the rotor so as to hide at least the magnetic pole portion of the inner magnetic pole in the radial direction of the second auxiliary magnet on the rotor side, and the magnetization direction of the third auxiliary magnet on the rotor side is parallel to the rotation axis of the rotor, and when the third auxiliary magnet on the rotor side is arranged on the left surface, a magnetic pole portion of the same polarity as the outer magnetic pole is arranged on the left surface, and when the third auxiliary magnet on the rotor side is arranged on the right surface, a magnetic pole portion of the same polarity as the outer magnetic pole is arranged on the right surface; 16. The power generating device according to claim 15, wherein a third auxiliary magnet on the fixed portion side is provided on a left surface and a right surface as viewed from the rotation direction of the rotor so as to hide at least a magnetic pole portion of an outer magnetic pole in the radial direction of the second auxiliary magnet on the fixed portion side, the magnetization direction of the third auxiliary magnet on the fixed portion side is parallel to the rotation axis of the rotor, and when the third auxiliary magnet on the fixed portion side is arranged on the left surface, a magnetic pole portion of the same polarity as the inner magnetic pole is arranged on the left surface side, and when the third auxiliary magnet on the fixed portion side is arranged on the right surface, a magnetic pole portion of the same polarity as the inner magnetic pole is arranged on the right surface side.

17. A power generating device in which the motor and / or the generator are supported by the bearing according to claim 16.

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