JP2007067252A - Hybrid magnet, and electric motor and generator using it - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a hybrid magnet which can change the direction of magnetic field. <P>SOLUTION: The hybrid magnet 1 has an electromagnet formed by winding an exciting coil 3 on a U-shaped yoke 2, and an engaging member 7 holding both sides of a permanent magnet 5 between magnetic members 6. It is formed by closely bonding the engaging member 7 to an inner side of both ends of the yoke 2. At least either the permanent magnet 5 or the magnetic member 6 is formed of a material whose saturation magnetic flux density is smaller than that of the yoke 2. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a hybrid magnet obtained by combining a permanent magnet and an electromagnet, and an electric motor and a generator using the hybrid magnet.

  Conventionally, there has been known an invention relating to a hybrid magnet that is a combination of a permanent magnet and an electromagnet, and can control the magnitude of the magnetic force exerted on the outside by controlling the current flowing through the coil of the electromagnet. (For example, see Patent Documents 1 and 2).

The hybrid magnet will be described below with reference to the drawings.
An example of the structure of the hybrid magnet is shown in FIG. FIG. 12 is a plan view of the hybrid magnet.

  The hybrid magnet 61 has an angle formed by sandwiching an electromagnet formed by winding an exciting coil 63 around a yoke 62 made of a “U” -shaped iron core having a rectangular cross section, and a permanent magnet 65 by magnetic members 66 from both ends. The engagement member 67 is composed of a rod-like engagement member 67, and the engagement member 67 is tightly joined to the opening end of the yoke 62.

The operation of the hybrid magnet will be described with reference to FIG. FIG. 13 shows lines of magnetic force when a soft magnetic material is brought close to a hybrid magnet.
When current is not passed through the electromagnet, only the magnetic force 69 generated by the permanent magnet is generated in the hybrid magnet 61, as shown in FIG. 13A. Since the magnetic circuit does not leak to the outside by forming a closed circuit of a magnetic member to a permanent magnet, an attractive force does not reach the adjacent soft magnetic body 68.

  Next, when a current is passed through the exciting coil of the electromagnet so that a magnetic force larger than the magnetic force 69 of the permanent magnet is generated in the direction opposite to the magnetic force line 69 by the permanent magnet, as shown in FIG. The magnetic force 69 exceeding the saturation state of the gas leaks as it is pushed out. Since the magnetic force 70 from the electromagnet is superimposed on the leaked magnetic force, a large attractive force is exerted on the adjacent soft magnetic body 68.

  Note that this attractive force can be further increased by forming the magnetic member with a material having a higher saturation magnetic flux density than the material of the yoke (see Patent Document 2).

  When a current is passed through the exciting coil so that a magnetic force 71 in the same direction as the magnetic force 69 of the permanent magnet is generated, the magnetic force 69 by the permanent magnet is generated by the magnetic force 71 of the electromagnet, as shown in FIG. Since it is canceled out, the attractive force on the soft magnetic body 68 is weakened.

  Further, when the current is increased and the magnitude of the magnetic force 71 of the electromagnet exceeds the magnetic force 69 of the permanent magnet, the magnetic force 69 of the permanent magnet is canceled and the magnetic force 70 by the electromagnet is changed as shown in FIG. Since a closed circuit of a yoke, a magnetic member, a permanent magnet, a magnetic member, and a yoke is formed to prevent the magnetic flux from leaking to the outside, the soft magnetic body 68 does not have an attractive force.

As described above, the hybrid magnet 61 has a characteristic that the magnitude of the magnetic force exerted on the outside can be adjusted in a wide range by controlling the direction and magnitude of the current flowing in the exciting coil of the electromagnet. It is.
JP-T-1-502705 Japanese Patent No. 3349966

  However, as can be understood from the above description, the direction of the magnetic flux that the hybrid magnet 61 can exert to the outside is limited to the direction of the magnetic force 69 of the permanent magnet as shown in FIG.

That is, the conventional hybrid magnet has a problem that the direction of the magnetic field cannot be changed.
For this reason, it is very difficult to use a hybrid magnet for an electric motor or a generator having a permanent magnet as a rotor or a stator, which has been a factor that greatly restricts its application while having excellent characteristics.

  The present invention has been made in view of such problems, and an object thereof is to provide a hybrid magnet capable of changing the direction of a magnetic field, and an electric motor and a generator using the hybrid magnet. To do.

  In order to achieve the above object, the present invention according to claim 1 is directed to an electromagnet formed by winding an exciting coil around a yoke made of a first magnetic material formed in a “U” shape, and both sides of a permanent magnet. In a hybrid magnet comprising an engagement member that is tightly joined to the inside of both end portions of the yoke with a second magnetic material, the saturation magnetic flux density of at least one of the permanent magnet and the second magnetic material is: The hybrid magnet is characterized by being smaller than a saturation magnetic flux density of the first magnetic material.

  Thus, by forming the members of the hybrid magnet with materials having different saturation magnetic flux densities, the direction of the magnetic field exerted on the outside by the hybrid magnet can be changed.

  According to the second aspect of the present invention, an electromagnet formed by winding an exciting coil around a yoke made of a first magnetic material formed in a “U” shape, and both sides of a permanent magnet are sandwiched between the second magnetic material. In the hybrid magnet comprising an engagement member tightly joined to the inside of both ends of the yoke, the cross-sectional area of at least one of the permanent magnet and the second magnetic material is greater than the cross-sectional area of the first magnetic material. It is a hybrid magnet characterized by being small.

  Thus, the direction of the magnetic field exerted to the outside by the hybrid magnet can be changed by changing the dimensions of the members of the hybrid magnet.

  According to a third aspect of the present invention, there is provided the hybrid type according to the first or second aspect, wherein the yoke near both ends of the exciting coil is provided with a protrusion extending to the opposite side of the engaging member. It is a magnet.

  By applying a magnetic force to an object close to each other through the protrusions, it is possible to reduce the magnetic resistance generated in the hybrid magnet, so that the magnetic energy of the hybrid magnet can be used efficiently.

  According to the fourth aspect of the present invention, a plurality of rod-shaped permanent magnets are arranged on the side surface of the virtual cylinder centered on the rotation axis so that the longitudinal direction is substantially parallel to the rotation axis so that the polarity is alternately changed in the circumferential direction. In the electric motor comprising the rotor formed in this manner and the stator facing the side surface of the virtual cylinder with a predetermined gap, the stator has a longitudinal direction of the engaging member substantially parallel to the rotation axis. It is an electric motor characterized by being the hybrid type magnet according to any one of claims 1 to 3 arranged so that.

  Thus, by using a hybrid magnet as a stator of an electric motor, a high-performance electric motor that makes use of the characteristics can be realized.

  According to the fifth aspect of the present invention, the longitudinal direction of the plurality of rod-shaped permanent magnets is substantially perpendicular to the rotation axis so that the polarities alternately change in the circumferential direction on a vertical section of a virtual cylinder centered on the rotation axis. In the electric motor comprising a rotor formed and a stator facing the outer periphery of the vertical section with a predetermined gap, the stator has a longitudinal direction of an engaging member substantially perpendicular to the rotating shaft. An electric motor comprising the hybrid magnet according to any one of claims 1 to 3 arranged so as to become.

  By adopting such a configuration, the magnetic energy of the hybrid magnet can be more efficiently converted into a rotational force.

  According to the sixth aspect of the present invention, a plurality of rod-shaped permanent magnets are arranged on the side surface of the virtual cylinder centering on the rotation axis so that the longitudinal direction is substantially parallel to the rotation axis so that the polarity changes alternately in the circumferential direction. And a stator that faces the side surface of the virtual cylinder with a predetermined gap, and the stator has a longitudinal direction of the engaging member substantially parallel to the rotation axis. It is a hybrid magnet in any one of Claims 1 thru | or 3 arrange | positioned so that it may become. It is a generator characterized by the above-mentioned.

  By rotating the rotor in the electric motor according to claim 4 with an external force, the magnetic flux of the permanent magnet effectively passes through the coil windings of the hybrid magnet alternately changing the direction. Can be used.

  According to the seventh aspect of the present invention, the longitudinal direction of the plurality of rod-like permanent magnets is substantially perpendicular to the rotation axis so that the polarities alternately change in the circumferential direction on a vertical section of a virtual cylinder centered on the rotation axis. In the generator comprising a rotor formed and a stator facing the outer periphery of the vertical section with a predetermined gap, the stator has a longitudinal direction of an engaging member substantially perpendicular to the rotation axis. It is a hybrid magnet in any one of Claims 1 thru | or 3 arrange | positioned so that it may become. It is a generator characterized by the above-mentioned.

  By rotating the rotor in the electric motor according to claim 5 with an external force, the magnetic flux of the permanent magnet effectively passes through the coil windings of the hybrid magnet alternately, so that the generator is more efficient. Can also be used.

  In the present invention, the magnetic member or permanent magnet of the hybrid magnet is formed of a material having a saturation magnetic flux density smaller than that of the yoke material, or the cross-sectional area of the magnetic member or permanent magnet is made smaller than the cross-sectional area of the yoke. Thus, it is possible to provide a hybrid magnet that can change the direction of the magnetic field exerted to the outside.

  Moreover, by using such a hybrid magnet for an electric motor and a generator, an efficient electric motor and a generator utilizing the characteristics of the hybrid magnet that the magnetic force can be adjusted in a wide range are provided. Can do.

  Embodiments of the present invention will be described with reference to the drawings.

  A first embodiment of a hybrid magnet according to the present invention will be described with reference to FIG. FIG. 1 shows the structure of the first embodiment. FIG. 1 (a) shows a plan view and FIG. 1 (b) shows a perspective view.

  The hybrid magnet 1 of the first embodiment includes an electromagnet formed by winding an exciting coil 3 around a yoke 2 made of a “U” -shaped magnetic material having a rectangular cross section, and a permanent magnet 5 from both ends. The engagement member 7 is tightly joined to the inside of both end portions of the arm portion 4 which is a part of the yoke 2.

  The reason why the engaging member 7 is tightly joined to the inside of the arm portion 4 is that the magnetic energy of the electromagnet can be effectively utilized by applying the magnetic flux to the outside through the end portion of the arm portion 7.

  At least one of the permanent magnet 5 and the magnetic member 6 constituting the engaging member 7 is formed of a material having a saturation magnetic flux density lower than that of the magnetic material forming the yoke 2. For example, when the material of the yoke 2 is soft iron, it is preferable to use nickel, white cast iron, gray cast iron, or the like.

  The operation of the first embodiment will be described with reference to FIG. FIG. 2 shows the magnetic force generated when the magnetic member is formed of a material having a saturation magnetic flux density lower than that of the yoke in the first embodiment.

  First, when a current is passed through the exciting coil 4 so as to generate a magnetic force 10 in the opposite direction to the magnetic force 9 by the permanent magnet, as shown in FIG. Magnetic flux in the same direction as the direction of the magnetic force 9 can be applied to an external object (soft magnetic material).

  Next, when a current is passed through the exciting coil 4 so that a magnetic force 11 in the same direction as the magnetic force 9 by the permanent magnet is generated, when the current is small and the magnetic force is weak, a closed circuit is used in the hybrid magnet as in the conventional case. However, when the current is increased to increase the magnetic force, the saturation magnetic flux density of the magnetic member 6 is smaller than that of the yoke 2, so that as shown in FIG. Since the magnetic flux exceeding the saturation state of the magnetic member 6 leaks to the outside, the magnetic flux can be exerted on the soft magnetic body 8 as well. The direction of the magnetic flux at this time is opposite to that in the case of FIG. 2A, and this means that the magnetic field of the hybrid magnet is inverted.

  This saturation magnetic flux density will be described in detail with reference to FIG. FIG. 3 shows a BH diagram of the magnetic material, where the horizontal axis indicates the strength of the external magnetic field, and the vertical axis indicates the density of magnetic flux from the N pole to the S pole of the magnetic material (the strength of the magnetic force). ).

  When a magnetic field is applied to the magnetic material from the outside, the magnet becomes magnetized from a state without magnetism (point 0) and becomes a gradually strong magnet. However, if the magnetic field is increased as it is, the limit of magnetic flux density will eventually appear. This is called the saturation magnetic flux density (point A or point B in the figure), and the magnetic flux density exceeding this is leaked to the external space of the magnetic material.

  Therefore, when the magnetic member is formed of a material having a saturation magnetic flux density lower than that of the yoke material, magnetic flux exceeding the saturation magnetic flux density of the magnetic member out of the magnetic flux generated in the yoke leaks to the outside. This is the same even when the permanent magnet is made of a material having a saturation magnetic flux density lower than that of the yoke material.

  A second embodiment of the hybrid magnet according to the present invention is shown in FIG. FIG. 4 is a plan view showing the structure of the second embodiment, and portions common to FIG. 1 are denoted by the same reference numerals.

  In the hybrid magnet 20 of the second embodiment, the cross-sectional area of at least one of the permanent magnet 22 and the magnetic member 21 constituting the engaging member 23 is made smaller than that of the magnetic material forming the yoke 2. The same effects as those of the first embodiment are achieved.

Therefore, the material of the magnetic material of the permanent magnet 22 and the magnetic member 21 and the yoke 2 may be the same.
In FIG. 4, the permanent magnet 22 and the magnetic member 21 have the same dimensions.

  The operation of the present embodiment will be described. When a large current is passed through the electromagnet so that a magnetic force in the same direction as the magnetic force generated by the permanent magnet 22 is generated, the sectional area of the permanent magnet 22 or the magnetic member 21 constitutes the yoke 2. Since the magnetic material is smaller than that of the magnetic material, the magnetic flux density is increased, and the magnetic flux exceeding the saturation state leaks to the outside as shown in FIG. 2B in the first embodiment.

  Note that the ratio of the cross-sectional area of the permanent magnet 22 or the magnetic member 21 and the magnetic material of the yoke 2 is desirably in the range of 50 to 80%.

  FIG. 5 shows a third embodiment of the hybrid magnet according to the present invention. FIG. 5 is a plan view showing the structure and use method of the third embodiment, and the same reference numerals are given to the portions common to FIG.

  The hybrid magnet 30 according to the third embodiment is formed by extending the arm portion 4 in the direction opposite to the engagement member 7 in the first embodiment to form the protruding portion 31.

  When using this embodiment, the magnetic force of the exciting coil 3 is greater than that of the arm portion 4 by bringing the protruding portion 31 side, not the engaging member 7 side, very close to the object 8 (soft magnetic body). Since it leaks toward the soft magnetic body 8, an attractive force can be exerted.

  Further, since the magnetic flux generated by the electromagnet does not pass through the arm portion 4 at this time, the magnetic resistance generated there can be avoided, so that the magnetic energy of the hybrid magnet 30 is more effective than in the first and second embodiments. Can be used for

  Since the hybrid magnet according to the present invention described above has a large magnetic force and can change the direction of the magnetic field, it can be applied to an electric motor and a generator.

  FIG. 6 shows a first embodiment of an electric motor using a hybrid magnet according to the present invention. FIG. 6 is a perspective view showing the structure of the electric motor according to the first embodiment, and the polarities of the magnets are indicated by “N” and “S” in the drawing.

  In the electric motor of the first embodiment, a hybrid magnet is used as the stator 40, and the rotor 41 is composed of a permanent magnet 43.

  The rotor 41 rotates six rod-shaped permanent magnets 43 on the side of a virtual cylinder centered on the rotation shaft 42 so that the magnetism is alternately different in the circumferential direction of the rotation shaft 42. It is configured by being arranged substantially parallel to the shaft 42.

  Further, a nonmagnetic material 44 is provided between each permanent magnet 43 and the rotating shaft 42 so that adjacent permanent magnets 43 interact with each other and do not cancel the magnetic force.

  The hybrid magnet 1 that is the stator 40 is opposed to the virtual cylindrical side surface of the permanent magnet 43 of the rotor 41 at a predetermined distance at an arbitrary position (the lower side of the rotor 41 in FIG. 6). In addition, the longitudinal direction of the engaging member 7 of the hybrid magnet 1 is arranged in a direction substantially parallel to the rotating shaft 42 of the rotor 41.

  The mechanism of rotation of the electric motor is the same as that of a normal electric motor, and the current of the exciting coil is controlled so that a magnetic field in the opposite direction or positive direction to the magnetic field of the opposing permanent magnet 43 is alternately generated in the hybrid magnet 1. Thus, the rotor is rotated by alternately generating a suction force and a repulsive force between the stator 40 and the rotor 41.

  Moreover, since the magnetic force of the permanent magnet 43 acts alternately on the winding of the exciting coil by rotating the rotor 41 in the electric motor with an external force, it can also be used as an efficient generator.

  A second embodiment of an electric motor using a hybrid magnet according to the present invention is shown in FIG. FIG. 7 is a perspective view showing the structure of the electric motor according to the second embodiment.

  This embodiment is a modification of the first embodiment, and constitutes a ring-shaped rotor 45 having no rotation axis by densely arranging permanent magnets 46 on a virtual cylindrical surface. is there. The nonmagnetic material 47 that prevents magnetic interference is disposed between the adjacent permanent magnets 46.

  By using such a ring-shaped rotor 45, for example, it is possible to directly drive the wheel with an electric motor via the rotor 45 attached to the wheel of an automobile or the like.

Further, the hybrid magnet 1 that is the stator 40 may be arranged inside the ring-shaped rotor 45 as in the third embodiment shown in FIG.
In this case, since the outer side of the electric motor rotates, a so-called outer rotor type electric motor can be obtained, so that a very large torque can be obtained.

  Of course, the electric motors according to the second and third embodiments can be used as a generator by rotating the rotor 45 with an external force, as in the case of the first embodiment.

  FIG. 9 shows a fourth embodiment of the electric motor using the hybrid magnet according to the present invention. FIG. 9 is a perspective view showing the structure of the electric motor according to the fourth embodiment.

  This electric motor uses a hybrid magnet as a stator as in the first to third embodiments, and the rotor is composed of a permanent magnet. It is characterized in that the longitudinal direction of the combined member is arranged in a substantially vertical direction.

  A specific configuration will be described below.

  The rotor 51 has a longitudinal direction of six rod-like permanent magnets 53 on a virtual cylindrical vertical section centered on the rotation shaft 52 so that the magnetism is alternately different in the circumferential direction of the rotation shaft 52. It is configured by being arranged substantially perpendicular to the rotation shaft 52.

  Further, the hybrid magnet 1 that is the stator 50 is opposed to the virtual circumference of the permanent magnet 53 of the rotor 51 at a predetermined distance at an arbitrary position (the lower side of the rotor 51 in FIG. 9). In addition, the longitudinal direction of the engaging member 7 of the hybrid magnet 1 is arranged in a direction substantially perpendicular to the rotating shaft 52 of the rotor 51.

  In the rotor 51, providing the nonmagnetic material 54 between each permanent magnet 53 and the rotating shaft 52 is the same as in the first embodiment.

  By adopting such a configuration, it is possible to efficiently convert the magnetic energy of the hybrid magnet into a rotational force as compared with the electric motors according to the first to third embodiments.

  Also in this embodiment, the rotor 51 can be rotated by an external force so that it can be used as a highly efficient generator.

  FIG. 10 shows a fifth embodiment of an electric motor using a hybrid magnet according to the present invention. FIG. 10 is a perspective view showing the structure of the electric motor according to the fifth embodiment.

  The present embodiment is a modification of the fourth embodiment, and a ring-shaped rotor 55 having no rotation axis is configured by densely arranging the permanent magnets 56 on a vertical cross section of a virtual cylinder. Is. Further, the nonmagnetic material 57 for preventing magnetic interference is disposed between the adjacent permanent magnets 56.

By using such a ring-shaped rotor 55, it is possible to drive the wheels directly with the electric motor, as in the case of the electric motor according to the second embodiment.
Further, the hybrid magnet 1 that is the stator 50 may be disposed inside the ring-shaped rotor 55 as in the sixth embodiment shown in FIG.

  Furthermore, the electric motors according to the fifth and sixth embodiments can also be used as a highly efficient generator by rotating the rotor 55 with an external force.

  As described above, in any of the embodiments, an efficient electric motor or generator that effectively uses the characteristics of the hybrid magnet can be realized.

  6 to 11 show the first embodiment as a hybrid magnet, it is needless to say that the second or third embodiment may be used. Further, the shape and number of permanent magnets and the number of hybrid magnets are not limited to those shown in these drawings.

1 shows a first embodiment of a hybrid magnet according to the present invention, wherein (a) is a plan view and (b) is a perspective view. FIG. It is a top view explaining the effect | action of the hybrid type magnet which concerns on this invention. It is a BH diagram of a magnetic body. A 2nd embodiment of a hybrid type magnet concerning the present invention is shown, (a) is a top view and (b) is a perspective view. It is a top view which shows 3rd Embodiment of the hybrid type magnet which concerns on this invention. 1 is a perspective view showing a first embodiment of an electric motor using a hybrid magnet according to the present invention. It is a perspective view which shows 2nd Embodiment of the electric motor using the hybrid type magnet which concerns on this invention. It is a perspective view which shows 3rd Embodiment of the electric motor using the hybrid type magnet which concerns on this invention. It is a perspective view which shows 4th Embodiment of the electric motor using the hybrid type magnet which concerns on this invention. It is a perspective view which shows 5th Embodiment of the electric motor using the hybrid type magnet which concerns on this invention. It is a perspective view which shows 6th Embodiment of the electric motor using the hybrid type magnet which concerns on this invention. It is a top view which shows the structure of the conventional hybrid type magnet. It is a top view which shows the effect | action of the conventional hybrid type magnet.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Hybrid type magnet 2 of 1st Embodiment Yoke 3 Excitation coil 4 Arm part 5 Permanent magnet 6 Magnetic member 7 Engaging member 8 Soft magnetic body 9 Magnetic force by a permanent magnet 10 Magnetic force by an electromagnet (direction opposite to a permanent magnet)
11 Magnetic force by electromagnet (same direction as permanent magnet)
20 Hybrid magnet 21 according to the second embodiment Magnetic member 22 Permanent magnet 23 Engaging member 30 Hybrid magnet 31 according to the third embodiment Projections 40 and 50 Stator 41 and 51 in the electric motor Rotor 42 in the electric motor , 52 Rotating shafts 43, 53 Rotor permanent magnets 44, 54 Non-magnetic material 45, 55 Ring-shaped rotor 46, 56 Ring-shaped rotor permanent magnets 47, 57 Ring-shaped rotor non-magnetic material 61 Conventional hybrid magnet 62 Yoke 63 Excitation coil 64 Arm portion 65 Permanent magnet 66 Magnetic member 67 Engaging member 68 Soft magnetic body 69 Magnetic force by permanent magnet 70 Magnetic force by electromagnet (opposite direction to permanent magnet)
71 Magnetic force by electromagnet (same direction as permanent magnet)

Claims (7)

An electromagnet formed by winding an exciting coil around a yoke made of a first magnetic material formed in a “U” shape;
A hybrid magnet comprising: an engaging member sandwiched between both ends of the yoke by sandwiching both sides of the permanent magnet with a second magnetic material;
A hybrid magnet, wherein a saturation magnetic flux density of at least one of the permanent magnet and the second magnetic material is smaller than a saturation magnetic flux density of the first magnetic material. An electromagnet formed by winding an exciting coil around a yoke made of a first magnetic material formed in a “U” shape;
A hybrid magnet comprising: an engaging member sandwiched between both ends of the yoke by sandwiching both sides of the permanent magnet with a second magnetic material;
A hybrid magnet, wherein a cross-sectional area of at least one of the permanent magnet and the second magnetic material is smaller than a cross-sectional area of the first magnetic material. 3. The hybrid magnet according to claim 1, wherein a protrusion extending to the opposite side of the engaging member is provided on a yoke near both ends of the exciting coil. A rotor formed by arranging a plurality of rod-shaped permanent magnets on a side surface of a virtual cylinder centering on the rotation axis, the longitudinal direction being arranged substantially parallel to the rotation axis so that the polarity is alternately changed in the circumferential direction;
In an electric motor comprising a stator facing the side surface of the virtual cylinder with a predetermined gap,
4. The electric motor according to claim 1, wherein the stator is a hybrid magnet according to claim 1, wherein the stator is disposed so that a longitudinal direction of the engaging member is substantially parallel to the rotation shaft. 5. A rotor formed by arranging a plurality of rod-shaped permanent magnets on a vertical cross section of a virtual cylinder centering on the rotation axis, the longitudinal direction being substantially perpendicular to the rotation axis so that the polarity is alternately changed in the circumferential direction;
In the electric motor consisting of the outer periphery of the vertical cross section and the stator facing with a predetermined gap,
4. The electric motor according to claim 1, wherein the stator is a hybrid magnet according to claim 1, wherein the stator is disposed so that a longitudinal direction of the engaging member is substantially perpendicular to the rotation shaft. A rotor formed by arranging a plurality of rod-shaped permanent magnets on a side surface of a virtual cylinder centering on the rotation axis, the longitudinal direction being arranged substantially parallel to the rotation axis so that the polarity is alternately changed in the circumferential direction;
In the generator comprising the side surface of the virtual cylinder and the stator facing with a predetermined gap,
4. The generator according to claim 1, wherein the stator is a hybrid magnet according to claim 1, wherein the engaging member is disposed so that a longitudinal direction of the engaging member is substantially parallel to the rotation shaft. 5. A rotor formed by arranging a plurality of rod-shaped permanent magnets on a vertical cross section of a virtual cylinder centering on the rotation axis, the longitudinal direction being substantially perpendicular to the rotation axis so that the polarity is alternately changed in the circumferential direction;
In the generator comprising the outer periphery of the vertical cross section and the stator facing with a predetermined gap,
4. The generator according to claim 1, wherein the stator is a hybrid magnet according to claim 1, wherein the stator is disposed so that a longitudinal direction of the engaging member is substantially perpendicular to the rotation shaft. 5.

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