WO2003049259A1

WO2003049259A1 - Radial gap motor

Info

Publication number: WO2003049259A1
Application number: PCT/JP2001/010547
Authority: WO
Inventors: Emil Nai Hong Lai; Akiko Aw; Kazuhiro Nagai; Kazuhiro Matsuyama; Atsushi Matsuyama
Original assignee: Kabushiki Kaisha Shigen Kaihatsu Sha
Priority date: 2001-12-03
Filing date: 2001-12-03
Publication date: 2003-06-12
Also published as: AU2002218526A1

Abstract

A radial gap motor comprising a base (10), a shaft (14), a stator frame (12), a plurality of electromagnet units (19), bearings (11A, 11B), a rotor frame (13), a plurality of permanent magnet units (19), bearings (11A, 11B), a rotor frame (13), a plurality of permanent magnet units (18) a rotary encoder (17), and a drive unit (22) for detecting that a permanent magnet unit (18) has reached a specified angle from a position where the pole of the electromagnet unit (19) substantially faces the pole of the permanent unit (18) based on the output from the rotary encoder (17) and supplying an exciting current to the electromagnet unit (19) such that the pole of the electromagnet unit (19) and the pole of the permanent magnet unit (18) repel electromagnetically by 20°, for example, from the detected angle, wherein the center line of a field passing through the center of pole of the electromagnet unit (19) intersects the center line of a field passing through the center of pole of the permanent magnet unit (18) at a specified angle.

Description

Specification'

Radial gap motor

Technical field

The present invention relates to a radial gap motor that rotates an outer rotor using electromagnetic repulsion.

Background art

There are two types of motors: a radial gap motor having a gap in the radial direction, and an axial gap motor having a gap in the axial direction. Radial gap motors are classified into an outer rotor motor having a rotor outside the stator, and an inner rotor motor having the rotor inside the stator.

Recently, many of the above-mentioned electric motors, which use permanent magnet units and are made of brushes, have been increasingly manufactured.

Such a motor achieves energy saving by using a permanent magnet unit, and achieves maintenance-free by adopting a brushless motor.

Generally, in such an electric motor, the rotational torque is often obtained by a rotating magnetic field generated between a motor and a stator. For this reason, it is necessary to generate a rotating magnetic field assuming that energy is saved by using a permanent magnet unit. For this reason, the reduction in energy required to generate this rotating magnetic field is a key to achieving energy saving as a motor.

Disclosure of the invention An object of the present invention is to provide a radial gap motor capable of achieving energy saving.

The above-mentioned object is achieved by the following radial gap motor. The present invention provides a stator frame,

A plurality of electromagnet units arranged in this status frame;

A rotor frame provided via a radial gap so as to rotate outside the stator frame;

A plurality of permanent magnet units having a magnetic field center line intersecting a magnetic field center line of the electromagnet unit at a predetermined angle, the permanent magnet units being provided on the rotor frame;

A sensor unit for detecting a relative position between the electromagnet unit and the permanent magnet unit,

Based on the output of this sensor unit, the permanent magnet unit has reached a predetermined angle from a position where the magnetic pole of the electromagnet unit and the magnetic pole of the permanent magnet unit are substantially opposed. And supplying an exciting current to the electromagnet unit so that the magnetic pole of the electromagnet unit and the magnetic pole of the permanent magnet unit repel electromagnetically by a predetermined angle from the detected angle. Drive unit and

A radial gap motor having:

According to the present invention, the electromagnet unit and the permanent magnet unit are so arranged that the center line of the magnetic field of the electromagnet unit and the center line of the magnetic field of the permanent magnet unit intersect at a predetermined angle. And the magnetic pole of the electromagnet cut and the magnetic pole of the permanent magnet cut are substantially opposed The permanent magnet unit reaches a predetermined angle from the position, and the magnetic unit of the electromagnet unit and the magnetic pole of the permanent magnet unit repel electromagnetically by a predetermined angle from the angle. By supplying an exciting current to the rotor, the permanent magnet unit and the rotor frame can be rotated.

In the radial gap motor having the above-described configuration, preferably, the drive unit is 0 11 + θ 12 + θ 13 = 360 ° / the number of rotor poles. 11 is a period during which the exciting current is not supplied when the electromagnet unit and the permanent magnet unit are close to each other, and 01 is a period during which the exciting current is supplied. The magnetic field of the unit and the magnetic field of the permanent magnet unit are set so as to repel each other. Means for supplying an exciting current to the electromagnet unit based on the output of the unit may be provided.

In the radial gap motor having the above-described configuration, preferably, the drive cutout is set to 0 2 1 + Θ 2 2 + 0 2 3 + Θ 2 4 = 360 ° Z rotor poles. 021 is a period during which the exciting current is not supplied when the electromagnet unit and the permanent magnet unit are close to each other, and 022 is a period during which the exciting current is supplied. The detection unit is configured so that the repulsion period is a period during which the exciting current is not supplied, and the period 24 is a period during which the exciting current is supplied and the electromagnetic attraction is performed. Means for supplying an exciting current to the electromagnet unit based on the output can be provided. In the radial gap motor having the above-described configuration, preferably, each of the plurality of electromagnet units has a magnetic pole surface, and the magnetic pole surface can be set to be directed in the radial direction. .

In contrast to the radial gap motor having the above-described configuration, preferably, each of the plurality of electromagnet units is arranged at regular intervals, non-regular intervals, or non-regular intervals along the circumferential direction. Can be arranged on the stator frame in combination.

In the radial gap motor having the above-described configuration, preferably, each of the plurality of electromagnet units is arranged on the stator frame in one or more stages along the axial direction. And can be.

In the radial gap motor having the above-described configuration, preferably, each of the plurality of electromagnet units is wound around at least one of an I-shaped core and a U-shaped core. And a coil to be used.

In the radial gap motor having the above-described configuration, preferably, the rotor frame includes a wall facing the status frame via the gap and an axial direction of the wall. And a plurality of grooves formed along and along which the permanent magnet unit is arranged.

In the radial gap motor having the above-described configuration, preferably, each of the plurality of permanent magnet units has a magnetic pole surface, and the magnetic pole surface can be set to be directed in the radial direction. You. In the radial gap motor having the above-described configuration, preferably, each of the plurality of permanent magnet units is arranged along the circumferential direction and the adjacent magnetic poles have the same polarity, different polarity, or the same polarity. It can be arranged on the rotor frame so as to be a combination of and a different pole, and at equal intervals, non-equal intervals or a combination of equal intervals and unequal intervals.

In the radial gap motor having the above-described configuration, preferably, each of the plurality of permanent magnet units is arranged along the axial direction and the adjacent magnetic poles have the same polarity, different polarity, or the same polarity as each other. They can be arranged on the rotor frame in one or more stages so as to be combined with different poles.

In the radial gap motor having the above-described configuration, preferably, further, a shaft connected to the rotor frame,

Bearings that support this shaft,

The base on which this bearing is provided and

Can be provided.

In the radial gap motor having the above-described configuration, it is preferable that the radial gear motor further include a flywheel arranged on the rotor frame.

In the radial gap motor having the above-described configuration, it is preferable that the radial gap motor further include a mechanism for integrally separating the rotor frame and the shaft from each other.

In the radial gear motor having the above-described configuration, preferably, a transmission gear for shifting the rotation of the shaft is further provided. Can be provided.

BRIEF DESCRIPTION OF THE FIGURES

FIG. 1 is a sectional view showing one embodiment of a radial gap motor according to the present invention.

FIG. 2 is a perspective view showing a relationship among a stator frame, a rotor frame, and a shaft in the embodiment.

FIG. 3 is a cross-sectional view taken along the direction min-in in FIG.

FIG. 4 is a schematic perspective view showing a relationship between a permanent magnet unit and an electromagnet unit in the embodiment.

FIG. 5 is a diagram showing an electric circuit in the same embodiment.

FIG. 6 is a circuit diagram of an electromagnet unit according to the same embodiment. FIG. 7 is a diagram showing an example of excitation of the electromagnet unit in the embodiment.

FIG. 8 is a waveform diagram of exciting currents of four magnet kits in the same embodiment.

FIG. 9 is a view showing another example of the excitation of the electromagnet unit in the embodiment.

FIG. 10 is a cross-sectional view taken along the line m--m in FIG. 1, which is different from FIG.

FIGS. 11A to 11E are diagrams showing the form of an electromagnet unit using an I-shaped core in the radial gap motor according to the present embodiment.

FIGS. 12A and 12B are diagrams showing an embodiment of an electromagnet unit using a U-shaped core in the radial gear motor according to the embodiment. FIGS. 13A to 13D are development views of an electromagnet unit in the radial gap motor according to the present embodiment.

FIGS. 14A to 14D are development views of a permanent magnet unit in the radial gap motor according to the present embodiment.

FIG. 15 is a sectional view showing another embodiment of the radial gap motor of the present invention.

FIG. 16 is a sectional view showing still another embodiment of the radial gap motor according to the present invention.

BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, embodiments of the present invention will be described.

FIG. 1 is a sectional view showing an embodiment of the radial gap motor according to the present invention.

As shown in FIG. 1, the radial gap motor according to the present embodiment generates an electromagnetic repulsion by applying an electromagnet of the same polarity to the magnetic poles of the permanent magnets, and the electromagnetic repulsion is generated by the electromagnetic repulsion. It is an electric motor that rotates the rotator and the shaft.

The radial gap motor according to the present embodiment includes a shaft 14, a stator frame 12 provided on a base 10, and a plurality of electromagnet units arranged on the stator frame 12. 19 and bearings 11A and 11B provided on the shaft 14 and the base 10 via a radial gap so as to rotate outside the stator frame 12. It has a rotor frame 13 provided on the bearings 11 A and 1 IB and a plurality of permanent magnet units 18 provided on the rotor frame 13. Further, the radial gap motor according to the present embodiment includes a rotary encoder 17 for detecting a relative position between the electromagnet unit 19 and the permanent magnet unit 18, and the rotor encoder 17. A drive unit 22 for supplying an exciting current to the electromagnet unit 19 based on the output of the rear encoder 17, and a magnetic pole center of the electromagnet unit 19 on the stator side is provided. The center line of the passing magnetic field intersects with the center line of the magnetic field passing through the center of the magnetic pole of the permanent magnet unit 8 on the rotor side at, for example, 50 degrees.

Hereinafter, the radial gap motor according to the present embodiment will be described in detail with reference to FIGS.

The radial gap motor according to the present embodiment has a base 10. The base 10 includes a first wall plate 1 OA, a second wall plate 10 B that is spaced apart from and faces the first wall plate 1 OA, a first wall plate 1 OA and a second wall plate 10. B consists of a bottom plate 10 C connecting one end of each and a force. The base 10 is made of a solid material or a plate-like first wall plate 10A, a second wall plate 10B, and a bottom plate 10C, each of which is manufactured by welding or screws. It can be made by assembling the three.

At the other end of each of the first wall plate 1OA and the second wall plate 1OB of the base 10, stationary parts of the bearings 11A and 11B are fixed.

A flange 12A of the stator frame 12 is fixed to the second wall plate 10B with screws or the like. As shown in FIG. 2, the status frame 12 has a substantially bobbin shape, and has a flange portion 12A and a cylindrical portion 12B. Status frame 1 2 Can be manufactured by fabricating a monolithic object or a flange .12A and a cylindrical portion 12B, respectively, and assembling the three members by welding or screws.

The open end on the side of the flange 12A of the cylindrical portion 12B of the stator frame 122 is positioned so as to face the bearing 11B.

As shown in FIG. 2, one end of the tip 13A of the rotor frame 13 is inserted into the rotating part of the bearing 11A provided on the first wall plate 10A, as shown in FIG. . As shown in FIG. 2, the notch 13A of the rotor frame 13 and the rotating part of the bearing 11B provided on the second wall plate 10B are provided as shown in FIG. In addition, a shaft 14 is provided.

Further, the rotor frame 13 is provided via a radial gap so as to rotate outside the stator frame 12.

One end of the shaft 14 is an output shaft of the electric motor, and the other end is fitted with a disk 17A of a rotary encoder 17 as a sensor unit. The detection section 17B of the rotary encoder 17 is provided on the first wall plate 1OA. The rotary encoder 17 detects a slit or a light reflecting member formed on the disk 17A by an optical transmission / reception element built in the detection section 17B, and reads a lead wire 17A. Output an electric signal to C.

In this way, the rotary encoder 17 detects the relative position between the permanent magnet unit 18 and the electromagnet unit 19. Specifically, the rotational position of the rotor frame 13 and, consequently, the permanent magnet unit 18 provided inside the cylindrical portion 13B of the rotor frame 13 (18 A 1, 18 A 2, 18 B 1, 18 B 2, 18 C 1, 18 C 2, 18 D 1, 18 D 2) To detect.

Note that the permanent magnet unit 18 in this example is arranged on the rotor frame 13 so that it is arranged along the circumferential direction and the axial direction, and the adjacent magnetic poles are mutually different. It has been done.

As the sensor unit, in addition to the optical rotary encoder described above, a permanent magnet unit 18 and an electromagnet unit 1 are formed by using a magnetic element such as a Hall element. The relative position with 9 can be detected.

As shown in FIG. 2, the rotor frame 13 has a substantially concave shape, and includes a knot portion 13A and a cylindrical portion 13B. The rotor frame 13 is manufactured by manufacturing an integral body made of a solid material, or a nozzle part 13A and a cylindrical part 13B, and assembling the three parts by welding or screws. Can be produced.

At the inner peripheral side of the cylindrical part 13 B of the rotor frame 13, attach the permanent magnet unit 18 in the axial direction at an interval of 360 ° in the circumferential direction 4 = 90 ° Grooves 15 are formed. Therefore, as shown in FIG. 3, four grooves 15 are formed in the circumferential direction and the radial direction of the cylindrical portion 13B.

The permanent magnet unit 18 is arranged in the groove 15, and the fixing method is a pinning mechanism, a screwing mechanism, or a resin. Various fixing methods can be adopted, such as fixing.

Further, the shape of the groove 15 formed in the rotor frame 13 is a concave portion so as to face the rotating direction of the rotor frame 13, so that the permanent magnet unit is formed. In this way, it is possible to suppress the projection of the project 18.

In this case, by installing a mechanism that can change the direction of the permanent magnet unit 18 in the groove 15, the direction of the permanent magnet unit 18 can be changed appropriately. Thus, it is possible to select a position where the electromagnetic repulsion in the electric motor of the present embodiment acts effectively.

Further, by arranging the permanent magnet cutouts 18 having different shapes in the grooves 15, the conditions under which the electromagnetic repulsion force in the electric motor of the present embodiment effectively works are set. Can be done.

Further, a flywheel 21 is attached to the cylindrical portion 13B of the rotor frame 13. The flywheel 21 has a function of contributing to smooth rotation, and can be installed as necessary. Especially, when the number of poles is small, it is preferable to install it in order to obtain smooth rotation.

Electromagnetic cuts 19 (19A1, 19A2, 19B1, 19B2, and 19B) are attached to the cylindrical portion 12B of the status frame 12. C 1, 19 C 2 and 19 D 1, 19 D 2) are installed, and these lead wires 19 E are led out of the base 10 and routed.

Pipe section 13 A of rotor frame 13 and pipe section 1 3 A pin 2 0 is fitted to the shut-off sheet 1 4 which is揷通in a rotor frame 1 ₃ and Shah oice 1 4 are taken Let 's you rotate integrally Rereru. Of course, by removing pin 20, even if rotor frame 13 rotates, shaft 14 remains stationary.

On the other hand, as shown in Fig. 3, the magnetic field center line of the permanent magnet unit 18 and the magnetic field center line of the electromagnet unit 19 intersect at an angle of 0.

Also, as shown in FIGS. 3 and 4, for example, the magnetic field center line of the permanent magnet unit 18A1 and the magnetic field center line of the electromagnet unit 19A1 intersect at an angle of 0. Similarly, the magnetic field centerline of the permanent magnet unit 18A2 and the magnetic field centerline of the electromagnet unit 19A2 intersect at an angle of 6.

In this case, the center line of the magnetic field of the electromagnet unit 19 A 2 coincides with the radial direction of the shaft 14. Note that 0 is a position where the magnetic field of the permanent magnet unit 18 and the magnetic field of the electromagnet unit 19 effectively repel each other. °.

Therefore, in a normal electric motor, the rotor-side magnetic poles and the stator-side magnetic poles face each other, but the present embodiment is characterized in that the rotor-side magnetic poles and the stator-side magnetic poles do not face each other. Confuse.

Next, an electric system of the radial gap motor according to the present embodiment will be described with reference to FIGS.

FIG. 5 shows an electric circuit of the radial gap motor according to the present embodiment. In the circuit diagram, the electromagnet unit 19 is driven by the exciting current output from the switching section 22 A of the drive unit 22.

Switching section 22A is controlled by a switching control signal from control section 22B. The control unit 22B inputs a signal from the rotary encoder 17.

The switching section 22 A receives the AC power supply 23 and generates a DC, and the DC is switched or shoved by a semiconductor switching element. Then, an exciting current to be applied to the electromagnet unit 19 is generated. This excitation current has a pulse waveform of (360 ° / number of rotor poles) X 2 and is supplied to each electromagnet unit.

The electromagnet unit 19 has two electromagnet units whose magnetic field center lines coincide with the radial direction of the shaft 14 as a pair, and four such pairs are provided. The coils are connected as shown in Fig. 6.

Based on the output of the rotary encoder 17, the drive unit 22 is moved from the position where the magnetic pole of the electromagnet unit 19 and the magnetic pole of the permanent magnet unit 18 are substantially opposed to each other. It is detected that the magnet unit 18 has reached the angle 01, and only from the angle 01 to the angle 02, the magnetic pole of the electromagnet unit 19 and the permanent magnet unit 18 An excitation current is supplied to the electromagnet unit 19 so that the magnetic poles and the magnetic poles repel each other.

More specifically, as shown in FIG. 7, the drive unit 22 has a relation of 0 1 1 + 0 1 2 + 0 1 3 = 360 ° / peripheral direction. Assuming that the number of rotor poles is 4 (in this example, the number of poles is 4), 0 1 1 indicates the non-excitation current of the excitation current when the electromagnet unit 19 and the permanent magnet unit 18 are close The supply period, 0 1 2, is the excitation current supply period, which is set so that the magnetic field of the electromagnet unit 19 and the magnetic field of the permanent magnet unit 18 repel 0 1 Reference numeral 3 denotes a configuration in which the excitation current is supplied to the electromagnet unit 19 based on the output of the rotary encoder 17 so that the excitation current is not supplied.

The following describes how the excitation method shown in Fig. 7 rotates the rotor side counterclockwise by 360 ° Z and the number of rotor poles 4 = 90 °.

In FIG. 7, the position where the permanent magnet unit 18 on the rotor side is closest to the electromagnet unit 19 on the stator side, that is, the position of the permanent magnet unit 18 on the rotor side The position where the center of the magnetic field is closest to the center of the magnetic field of the electromagnet unit 19 on the stator side is defined as 0 °. If this time is set as the starting point of Θ11, no exciting current is supplied to the electromagnet unit 19 from the starting point to the ending point of Θ11. Therefore, the magnetic force of the permanent magnet unit 18 only attracts the core, which is the magnetic material of the electromagnet unit 19.

Next, the rotor-side permanent magnet unit 18 and the stator-side electromagnet unit 19 are connected to the electromagnet unit during the period from the end point of θ11, that is, from the start point to the end point of θ12. Excitation current is supplied to unit 19. In this case, if the permanent magnet unit 18 is an S pole, the exciting current and the coil winding direction of the electromagnet unit 19 are so set that the electromagnet unit 19 also has an S pole. Is set Te, ru.

Therefore, the electromagnetic repulsive force caused by the permanent magnet unit 18 and the electromagnet unit 19 both having the S pole, Rotate magnet unit 18 and rotor frame 13 counterclockwise.

Next, during the period from the start point to the end point of the permanent magnet unit 18 on the rotor side and the end point of the electromagnet unit 19 and the force 12 on the stator side, that is, the electromagnetic unit 1 No excitation current is supplied to point 19. During this period, the permanent magnet unit 18 and the rotor frame 13 are rotated counterclockwise by the inertia of the flywheel 21 and the like.

By applying the above-described excitation method to each electromagnet unit 19 by inverting its polarity every time the rotor rotates 90 °, a permanent magnet unit 18 and the like can be obtained. Rotor frame 13 can be continuously rotated counterclockwise.

In the excitation method shown in FIG. 7, θ 11 is, for example, approximately 20 °, θ 12 is, for example, approximately 20 °, and θ 13 is, for example, approximately 50 °. Here, the electromagnetic repulsion generated by the magnetic field of the electromagnet unit 19 and the magnetic field of the permanent magnet unit 18 due to the excitation current supply period θ 12 becomes the rotor frame 13. This is the force to rotate the.

FIG. 8 shows the electromagnet units 19 A 1, 19 A 2, 19 B 1, 19 B 2, 19 C 1, 19 C 2, 19 D 1, 19 D 2 The figure shows the excitation current to the electromagnet unit 19 and each part of the number of rotor poles in the circumferential direction of 360 ° (in this case, the number of poles is 4). Just flowing the excitation current by θ 1 2 Rotor frame 13 can be rotated by electromagnetic repulsion. Moreover, since the rotor is a permanent magnet unit, energy is greatly reduced.

Next, the excitation of the electromagnet cut 19 different from that in FIG. 7 will be described with reference to FIG. In FIG. 7, the magnetic field of the electromagnet unit 19 is such that the magnetic field of the electromagnet unit 19 and the magnetic field of the permanent magnet unit 18 repulse electromagnetically to rotate the mouth frame 13. Was to excite.

On the other hand, in FIG. 9, the electromagnetic repulsion force and the electromagnetic attraction force are used for the rotation of the rotor frame 13. That is, assuming that 0 2 1 + Θ 2 2 + 0 2 3 + 0 2 4 = 360 ° / number of rotor poles in the circumferential direction, 0 2 1 is an electromagnet unit 19 and a permanent magnet unit. 822 is the period during which the electromagnetic repulsion occurs as the excitation current supply period, Θ23 is the period during which the excitation current is not supplied, and 0 Reference numeral 24 denotes a configuration in which the excitation current is supplied to the electromagnet unit 19 based on the output of the rotary encoder 17 so that the electromagnetic current is generated during the excitation current supply period. is there.

The excitation method shown in Fig. 9 will be described in the context of how the rotor rotates 360 ° counterclockwise / number of rotor poles 4 = 90 ° counterclockwise. In the motor to which this excitation method is applied, the permanent magnet units 18 adjacent to each other in the circumferential direction have different poles such as an S pole and an N pole.

In FIG. 9, the position where the permanent magnet unit 18 on the rotor side is closest to the electromagnet unit 19 on the stator side, that is, the position of the permanent magnet unit 18 on the rotor side Magnetic field center and stay The position at which the center of the magnetic field of the electromagnet unit 19 on the data side comes closest to is 0 °. If this time is set as the starting point of 0 21, the exciting current is not supplied to the electromagnet unit 19 from the starting point of 0 21 to the end point. Therefore, only the magnetic force of the permanent magnet unit 18 merely attracts the magnetic material core of the electromagnet unit 19.

Next, the rotor permanent magnet unit 18, the stator magnet unit 19 and the end point of force 0 21, that is, the period from the start point to the end point of 0 22, Then, an exciting current is supplied to the electromagnet unit 19. In this case, if the permanent magnet unit 18 has the south pole, the exciting current and the coil winding of the electromagnet unit 19 will be such that the electromagnet unit 19 also has the south pole. The rotation direction is set.

Therefore, the electromagnetic repulsion generated by the permanent magnet unit 18 and the electromagnet unit 19 both having the S pole is affected by the attractive force at the time of non-excitation, and the permanent magnet unit Rotate nit 18 and rotor frame 13 counterclockwise.

Next, the permanent magnet unit 18 on the rotor side and the end point of the electromagnet unit 19 and the force 22 on the stator side, that is, during the period from the start point to the end point of Θ23, the electromagnetic magnet unit Excitation current is not supplied to the cut 1.9. During this period, the permanent magnet unit 18 and the rotor frame 13 are rotated counterclockwise by the inertia force of the flywheel 21 and the like.

Next, the permanent magnet unit 18 on the rotor side, the electromagnet unit 19 on the stator side and the end point of the force 23, that is, During the period from the start point to the end point, the excitation current is supplied to the electromagnet unit 19. During this period, the electromagnetic attraction due to the S pole and N pole of the next permanent magnet unit 18 and the electromagnet unit 19 acting on the permanent magnet unit 18 Then, rotate the permanent magnet cutout 18 and the rotor frame 13 counterclockwise.

By applying the above-described excitation method to each electromagnet unit 19 with the polarity inverted every 90 °, the permanent magnet unit 18 and the rotor frame 1 can be used. 3 can be continuously rotated counterclockwise.

According to this excitation method, the rotor frame 1 can be supplied only by supplying an exciting current to each of the electromagnet units 19 for a period Θ22 contributing to electromagnetic repulsion and a period Θ24 contributing to electromagnetic attraction. 3 can be rotated by electromagnetic repulsion and electromagnetic attraction.

In the excitation method shown in FIG. 9, Θ21 is, for example, approximately 20 °, 022 is, for example, approximately 20 °, 023 is, for example, approximately 30 °, and 024 is, for example, approximately 20 °. .

Next, an example of the arrangement of the electromagnet unit and the permanent magnet unit different from that of FIG. 3 will be described with reference to FIG. First, in FIG. 3, each of the electromagnet cuts 19 has a pole face, and the pole faces are set so as to face the radial direction of the shaft 14. Each of the permanent magnet units 23 in FIG. 10 has a magnetic pole surface, and the magnetic pole surface is set so as to face the radial direction of the shaft 14.

In this case, the permanent magnet unit 2 3 (23 A 1, 23 A 2 , 23 B 1, 23 B 2, 23 C 1, 23 C 2, 23 D 1, 23 D 2) have their magnetic pole faces It is arranged on the rotor frame 13 ′ so as to face the radial direction 4.

Further, the electromagnet units 24 (two pairs of 24A1, 24A2 and 24B1, 24B2) are respectively arranged in the stator frame 12 '.

For example, the magnetic field center lines of the permanent magnet cuts 23A1, 23A2 and 23B1, 23B2, and the magnetic center lines of the electromagnet cuts 24A1, 24A2 Intersect at an angle of 0. Note that 0 is, for example, 50 °.

This Θ is a position where the magnetic field of the permanent magnet unit 23 and the magnetic field of the electromagnet unit 24 effectively repel each other. Next, an electromagnet unit that can be used in the above-described example will be described in detail with reference to FIGS. 11A to 11E, 12A, and 12B.

The electromagnet unit 100 shown in FIG. 11A is obtained by winding a coil 120 around an I-shaped core 110, and one end of the I-shaped core 110. Are used as magnetic poles.

The electromagnet unit 101 shown in FIG. 11B is obtained by winding a coil 120 around an I-shaped core 110, and has an I-shaped core 110. Both ends are used as magnetic poles.

The electromagnet unit 102 shown in FIG. 11C is obtained by winding a coil 120 around two I-shaped cores 110 and has two coils. One end of each I-shaped core 110 is used as a magnetic pole, and both magnetic poles are oriented in opposite directions.

The electromagnet unit 103 shown in FIG. 11D is obtained by winding a coil 120 around two I-shaped cores 110 and has two I-shaped cores 1. 10 One end of each is used as a magnetic pole, and both magnetic poles are oriented in the same direction.

The electromagnet unit 104 shown in FIG. 11E is obtained by winding a coil 120 around two I-shaped cores 110, and has two I-shaped cores 111. 0 Both ends are used as magnetic poles.

The electromagnet cut 105 shown in Fig. 12A has a U-shaped core 111 wound with a coil 120, and both ends of the U-shaped core 112 are used as magnetic poles. ing.

The electromagnet unit 106 shown in Fig. 12B has two U-shaped cores 112 with a coil 120 wound around it, and two ends of each of the two U-shaped cores 112. Used as magnetic poles.

Next, an example of a circumferential arrangement of electromagnet units that can be used in the above-described example will be described. That is, in the present invention, each of the plurality of electromagnet cuts is disposed on the stator frame along the circumferential direction at equal intervals, non-equal intervals, or a combination of equal intervals and unequal intervals.

In the present invention, each of the plurality of electromagnet units is arranged on the stator frame in one or more stages along the axial direction.

A specific example of an electromagnetic magnet unit will be described with reference to FIGS. 13A to 13D. Figures 13A to 13D show the stator side. When opened, the layout and poles of the electromagnet unit are schematically shown.

FIG. 13A shows an example in which the electromagnet units are arranged on the stator frame at 180 ° intervals in the circumferential direction and in one stage in the axial direction.

FIG. 13B shows an example in which the electromagnet units are arranged on the stator frame at 90 ° intervals in the circumferential direction and in one stage in the axial direction.

FIG. 13C shows an example in which the electromagnet units are arranged on the stator frame at 180 ° intervals in the circumferential direction and in two stages in the axial direction.

FIG. 13D shows an example in which the electromagnet units are arranged on the stator frame at 90 ° intervals in the circumferential direction and in two stages in the axial direction.

Next, an example of the circumferential arrangement of the permanent magnet units will be described. In the present invention, the plurality of permanent magnet units are arranged along the circumferential direction, and the adjacent magnetic poles are mutually the same, different, or a combination of the same and different. The rotor frames are arranged at equal intervals, non-equal intervals or a combination of equal and non-equal intervals.

Also, the plurality of permanent magnet units are arranged along the axial direction, and the adjacent magnetic poles are the same, different, or a combination of the same and different poles. It is arranged on the rotor frame in one or more stages.

Permanent magnet unit tool that can be used in the above example A body example will be described with reference to FIGS. 14A to 14D. FIGS. 14 to 140 show the arrangement of the permanent magnet unit and the poles schematically, with the rotor side developed.

FIG. 14A shows an example in which permanent magnet units, which are circumferentially spaced at 180 ° and are one stage in the axial direction, are arranged on the rotor frame 12.

FIG. 14B shows an example in which a permanent magnet unit, which is 90 degrees in the circumferential direction and is one stage in the axial direction, is arranged on the rotor frame 12.

FIG. 14C shows an example in which permanent magnet units, which are arranged at 180 ° intervals in the circumferential direction and are one stage in the axial direction, are arranged on the rotor frame 12.

FIG. 14D shows an example in which permanent magnet units, each having a 90-degree interval in the circumferential direction and two stages in the axial direction, are arranged on the rotor frame 12.

FIG. 15 shows a case where a rotor frame 24 A and a shaft 24 B are integrally manufactured as the rotor 24.

According to the radial gear motor of the present embodiment having such a configuration, the rotation of the rotor frame 13 and the rotation of the output shaft 25 A of the transmission 25 are performed by the rotation 2. The system rotation can be obtained. In this case, for example, if a fin is provided outside the rotor frame 13, a fan mechanism by the rotor frame 13 and a rotation mechanism by the shaft 14 may be obtained. it can.

FIG. 16 shows a case in which a transmission 25 is provided on the output shaft of the shaft 14 in FIG. 1 to increase the torque of the shaft 14. According to the radial gear motor of the present embodiment having such a configuration, two rotations are performed by the rotation of the rotor frame 13 and the rotation of the output shaft 25 A of the transmission 25. Can be obtained. In this case, for example, if a fin is provided outside the rotor frame 13, the high-speed, low-torque fan mechanism by the rotor frame 13 and the output shaft 25 of the transmission 25 A low-speed, high-torque rotation mechanism by A can be obtained.

The present invention is not limited to the embodiment shown and described above, and can be variously modified in an implementation stage without departing from the gist of the invention.

For example, for the permanent magnet unit on the rotor side, the number of poles and pole arrangement in the circumferential and axial directions can be appropriately selected in consideration of the number of poles on the stator side and the like.

Similarly, with regard to the electromagnet unit on the stator side, the number of poles and pole arrangement in the circumferential and axial directions can be appropriately selected in consideration of the number of poles on the rotor side and the like.

Further, the permanent magnet unit and the electromagnet unit can adopt various forms and shapes, and the connection form of the coil is adjusted so that the electromagnetic repulsive force and the attractive force of the present invention function. It can be selected as appropriate.

Furthermore, the illustrated and described embodiments may be combined as appropriate as much as possible, in which case the combined effects are obtained.

Furthermore, each of the above-described embodiments includes various stages of the invention, and is appropriately combined with a plurality of disclosed configuration requirements. Thus, various inventions can be extracted.

For example, if an invention is extracted by omitting some of the constituent elements from all the constituent elements described in the embodiment, when implementing the extracted invention, the omitted part is a well-known common technique. It will be supplemented as appropriate.

Industrial applicability

As described above, the present invention relates to a stator frame, and a plurality of electromagnet units disposed on the stator frame.

A plurality of permanent magnet units having a magnetic field center line intersecting the magnetic field center line of the electromagnet unit at a predetermined angle, provided on the rotor frame;

A sensor unit for detecting a relative position between the electromagnet unit and the permanent magnet unit;

Based on the output of the sensor unit, it is determined that the permanent magnet unit has reached a predetermined angle from a position where the magnetic pole of the electromagnet unit and the magnetic pole of the permanent magnet unit are substantially opposed to each other. Detection is performed, and an exciting current is supplied to the electromagnet unit so that the magnetic pole of the electromagnet unit and the magnetic pole of the permanent magnet unit repel electromagnetically by a predetermined angle from the detection angle. A radial gap motor comprising: a drive unit;

With this configuration, the center line of the magnetic field of the electromagnet unit and the center line of the magnetic field of the permanent magnet unit intersect at a predetermined angle. The permanent magnet unit and the permanent magnet unit are arranged so that the magnetic poles of the permanent magnet unit and the permanent magnet unit are substantially opposed to each other. When the unit reaches a predetermined angle, an exciting current is supplied to the electromagnet unit so that the magnetic pole of the electromagnet unit and the magnetic pole of the permanent magnet unit repel electromagnetically by a predetermined angle from the angle. I will do it.

Therefore, according to the present invention, it is possible to rotate the permanent magnet unit and the rotor frame with a small amount of current, and to provide a radial gear motor having excellent characteristics from the viewpoint of energy saving. It can be provided.

Claims

The scope of the claims

1. The stator frame and

A plurality of electromagnet units arranged in this stator frame;

A rotor frame provided through a radial gap so as to rotate outside the stator frame;

A plurality of permanent magnet units having a magnetic field center line intersecting at a predetermined angle with a magnetic field center line of the electromagnet unit, provided on the rotor frame;

Based on the output of the sensor unit, it is detected that the permanent magnet unit has reached a predetermined angle from a position where the magnetic pole of the electromagnet unit and the magnetic pole of the permanent magnet unit are substantially opposed. A drive unit that supplies an exciting current to the electromagnet unit so that the magnetic pole of the electromagnet unit and the magnetic pole of the permanent magnet unit repel electromagnetically by a predetermined angle from the detected angle. And

A radial gap motor having:

2. When the drive unit is set to 0 1 1 + 6 1 2 + 0 1 3 = 360 ° / number of rotor poles, 0 11 is the electromagnet unit and the permanent magnet unit. A period during which the exciting current is not supplied in a state in which the magnets are close to each other, and a reference numeral 112 denotes a period during which the exciting current is supplied. And are set to repel, 2. The apparatus according to claim 1, further comprising: a unit that supplies an exciting current to the electromagnet unit based on an output of the detection unit so that the 013 is a period during which the exciting current is not supplied. 3. Radial gap motor.

3.When the drive unit has the number of 0 2 1 + 0 2 2 + 6 2 3 + Θ 2 4 = 360 ° rotor poles, the 0 2 1 is the electromagnet unit and the The period during which the exciting current is not supplied when the permanent magnet unit is in close proximity, the period 、 22 is the period during which the exciting current is supplied, and the period during which electromagnetic repulsion occurs. The excitation current is supplied to the electromagnet unit on the basis of the output of the detection unit so that the supply period is such that the excitation current is a supply period of the excitation current and is a period of electromagnetic attraction. 2. The radial gap motor according to claim 1, further comprising:

4. The radial gap motor according to claim 1, wherein each of the plurality of electromagnet units has a magnetic pole surface, and the magnetic pole surface is set so as to face a radial direction.

5. The radial gap motor according to claim 1, wherein each of the plurality of electromagnet units is disposed on the stator frame along a circumferential direction.

6. The radial gap motor according to claim 1, wherein each of the plurality of electromagnet units is arranged on the stator frame so as to have a plurality of magnetic poles along an axial direction.

7. Each of the plurality of electromagnet units is wound around at least one of an I-shaped core and a U-shaped core. The radial gap motor according to claim 1, comprising:

8. The rotor frame has a wall facing the stator frame via the gap, and a plurality of rotor frames formed along the axial direction of the wall and arranging the permanent magnet unit. 2. The radial gap motor according to claim 1, comprising a number of grooves.

9. The radial gap motor according to claim 1, wherein each of the plurality of permanent magnet units has a magnetic pole surface, and the magnetic pole surface is set so as to face a radial direction.

10. The radial gap motor according to claim 1, wherein each of the plurality of permanent magnet cutouts is arranged on the rotor frame along a circumferential direction.

11. The radial gap motor according to claim 1, wherein each of the plurality of permanent magnet units is arranged on the rotor frame so as to have a plurality of magnetic poles.

12. Further, a shaft connected to the rotor frame,

Bearings that support this shaft,

The base on which this baling is provided and

The radial gap motor according to claim 1, comprising:

13. The radial gap motor according to claim 1, further comprising a flywheel arranged on the rotor frame.

14. The radius according to claim 12, further comprising a mechanism for integrating and separating said rotor frame and said shaft. Leg gap motor.

15. The radial gap motor according to claim 14, further comprising: a shift gear that shifts the rotation of the shaft.