JP5638923B2 - Rotating device using permanent magnet - Google Patents

Description

The present invention relates to a rotating device using a permanent magnet.

As a rotating device using a permanent magnet, there are a motor and a generator. In general, such a rotating device is provided with a permanent magnet on one of a stator and a rotor, and an electromagnetic coil is disposed along the circumferential direction on the other to switch the energization of the electromagnetic coil. Some rotors are driven to rotate by using a magnetic force between a coil and a permanent magnet.

Patent Document 1 discloses a motor in which permanent magnets are provided on both a stator and a rotor. In the one described in Patent Document 1, a cylindrical or 4-pole rotor-side permanent magnet is disposed in a cylindrical stator-side permanent magnet so that each permanent magnet has a repulsive magnetic relationship. Is set. And the thing which moves the flow of the magnetic force line between both permanent magnets to the circumferential direction by the electromagnetic coil comprised between both permanent magnets and comprised in the stator is disclosed, and the rotor is rotationally driven. Further, Patent Document 2 discloses that a stator and a rotor are each provided with a permanent magnet, while a superconductor is separately provided and the rotor is rotated only by the magnetic force of the permanent magnet. It has a high quality.

Japanese Patent Laid-Open No. 7-274459 JP-A 64-34186

By the way, in the case where permanent magnets are provided on both the stator and the rotor, when the electromagnetic coil is not energized, the rotor can be stably stopped by attracting or repelling the permanent magnets. (Braking function) is possible, which is preferable in preventing the rotor from being rotated carelessly when not in use. However, since the electromagnetic coil is arranged between the stator side permanent magnet and the rotor side permanent magnet, the structure described in Patent Document 1 is complicated, and the magnetic force between the permanent magnets is also large. The effect will be weak. In particular, in the one described in Patent Document 1, it is considered that the electromagnetic coil has to be made into a magnetic pole so as to cancel the magnetic force of the permanent magnet. Therefore, the power consumption of the electromagnetic coil is increased and the magnetic force of the permanent magnet is reduced. It is also not preferable because it also mimics.

The present invention has been made in consideration of the above-described circumstances, and an object of the present invention is to provide a rotating device in which permanent magnets are provided on both a stator and a rotor, which has a simple structure and a magnetic force between the permanent magnets. It is an object of the present invention to provide a rotating device using a permanent magnet that can effectively use the magnet.

In order to achieve the above object, the following solution is adopted in the present invention. That is, as described in claim 1 in the claims,
A stator and a rotor rotated in the stator,
The stator is provided with a plurality of stator-side permanent magnets that are magnetically poled in the radial direction of the rotor, with an interval in the circumferential direction,
The rotor is provided with a plurality of rotor-side permanent magnets that are magnetically poled in the radial direction of the rotor at intervals in the circumferential direction,
A plurality of electromagnetic coils set so as to be poled in the radial direction of the rotor are disposed on one side member of the stator and the rotor,
Of the stator-side permanent magnet and the rotor-side permanent magnet, a permanent magnet provided on the one-side member is a one-side permanent magnet, and a permanent magnet provided on the other-side member of the stator and the rotor is When the other-side permanent magnet is used, the plurality of electromagnetic coils are dispersedly arranged so as to be located between the one-side permanent magnets, respectively .
By switching the energization state for the plurality of electromagnetic coils, the rotor is a motor that is rotationally driven,
The circumferential length of at least some other permanent magnets among the plurality of other permanent magnets is longer than the circumferential length of the one permanent magnet,
The plurality of stator-side permanent magnets are set so that the polarities of the surfaces facing the rotor side are the same as each other,
The plurality of rotor-side permanent magnets are set so that polarities of surfaces facing the stator side are the same polarity.
Each stator side permanent magnet is set to have a repulsive relationship with each rotor side permanent magnet,
The one side member is provided with an auxiliary permanent magnet that performs an attracting action on the other side permanent magnet at a position adjacent to the end face on the rotation direction advance side of the rotor of the one side permanent magnet.
It is like that.

According to the above solution, the stator-side permanent magnet and the rotor-side permanent magnet can be disposed close to each other in the radial direction, and the magnetic force between them can be used effectively. The electromagnetic coil can be used in a general way of being arranged in the circumferential direction. In other words, the conventional arrangement in which the electromagnetic coil extends over the entire length in the circumferential direction is partially replaced with a permanent magnet, the structure is simple, and the radial size is reduced. Can do. Of course, the electromagnetic coil does not require a large electric power that cancels the magnetic force of the permanent magnets adjacent in the circumferential direction, so that it is preferable for reducing power consumption and maintaining the magnetic force of the permanent magnet.

In addition to the above, when the stator-side permanent magnet and the rotor-side permanent magnet have a repulsive relationship, resistance is temporarily applied when the rotor-side permanent magnet passes through the stator-side permanent magnet in accordance with the rotation of the rotor. After being repelled, it is in a state of being urged to rotate. Conversely, when the stator-side permanent magnet and the rotor-side permanent magnet are in a suction relationship, when the rotor-side permanent magnet passes through the stator-side permanent magnet according to the rotation of the rotor, the stator-side permanent magnet is once subjected to an attracting action. It will be in the state which receives a pullback action later. The above is a factor for intermittently changing the rotational speed of the rotor. Therefore, by using various machines or devices having periodic fluctuations in the operation speed such as a reciprocating engine and a press machine in combination so as to cancel the cyclic fluctuations, these machines or This is preferable in facilitating the operation of the apparatus.

Further, if used as a general motor as rotation device is provided. Further, in the stopped state, the circumferential end portion of the permanent magnet of the other side member is a position that reliably faces the electromagnetic coil. Therefore, for example, when used as a motor, it is preferable for starting up effectively by ensuring as much magnetic force as possible between the electromagnetic coil and the permanent magnet of the other side member at starting up. Further, for example, when used as a generator, it is preferable for effective power generation from the beginning of rotation of the rotor.

Furthermore, it is preferable in view of preventing the wrong polarity from being assembled. It is particularly suitable when the number of permanent magnets is increased.

Furthermore, a rotating device using the repulsive force of both permanent magnets can be provided. In particular, in the case of repulsion, when both permanent magnets approach in the circumferential direction, there is a large resistance, but when they are separated thereafter, a sudden repulsive force is exerted and the rotor is rotated vigorously, and intermittently. This is suitable for obtaining a large rotational force. Note that when the permanent magnets are attracted to each other, a large rotational force is not applied as in the case of repulsion.

Furthermore , the attraction force by the auxiliary permanent magnet is added to the above-described rapid repulsive force, and the effect corresponding to the effect described in the paragraph number can be more effectively exhibited.

A preferred mode based on the above solution is as described in claim 2 and the following claims. That is,
The circumferential lengths of the one side permanent magnets are equal to each other,
Each of the other permanent magnets has the same circumferential length and is longer than the circumferential length of the one permanent magnet.
(Corresponding to claim 2 ). In this case, the effect corresponding to the first aspect is preferable in order to fully exhibit the effect. Moreover, it is also preferable in order to make the rotational fluctuation of the rotor regular.

A first state in which the rotor is rotationally driven by switching the energization state to the plurality of electromagnetic coils, and a generator in which electric power is extracted from the electromagnetic coils by rotationally driving the rotor. It is used by switching between two states (corresponding to claim 3 ). In this case, it is suitable for use in a hybrid vehicle or the like.

The electromagnetic coil is provided in the stator (corresponding to claim 4 ). In this case, providing the electromagnetic coil on the stator side is preferable in terms of facilitating the structure such as arrangement for energizing the electromagnetic coil.

According to the present invention, a rotating device using a permanent magnet that can effectively use the magnetic force between the stator-side permanent magnet and the rotor-side permanent magnet, has a simple structure, and can be suppressed to a small size in the radial direction. Can be provided.

Sectional drawing which shows the 1st Embodiment of this invention. 2 is a detailed cross-sectional view of a region X in FIG. Sectional drawing which shows the 2nd Embodiment of this invention. Sectional drawing which shows the 3rd Embodiment of this invention. Sectional drawing which shows the 4th Embodiment of this invention. Sectional drawing which shows the 5th Embodiment of this invention. Sectional drawing which shows the 6th Embodiment of this invention. Sectional drawing which shows the 7th Embodiment of this invention. Sectional drawing which shows the 8th Embodiment of this invention. Sectional drawing which shows the 9th Embodiment of this invention. Sectional drawing which shows the 10th Embodiment of this invention. The figure which shows in block diagram the example of the electricity supply control system to an electromagnetic coil. The figure which shows an example at the time of using the rotating apparatus by this invention for a reciprocating type engine.

A plurality of embodiments will be described below, but among the embodiments, the one corresponding to the present invention described in the claims is the third embodiment shown in FIG. 4, and the other embodiments are reference examples. It is shown as In FIG. 1, reference numeral 1 denotes a rotating device using a permanent magnet, which is used as a motor in the embodiment. Therefore, in the following description, the motor may be indicated as reference numeral 1. The motor 1 includes a stator 10 and a rotor 20, and a rotation axis of the rotor 20 is indicated by a reference numeral 30. Five stator side permanent magnets A1 to A4 are fixedly arranged on the inner peripheral surface side of the stator 10 at equal intervals in the circumferential direction. Further, four electromagnetic coils C <b> 1 to C <b> 4 are fixedly arranged on the inner peripheral surface side of the stator 10 at equal intervals in the circumferential direction. That is, one electromagnetic coil (for example, C1) is set between a pair of adjacent stator side permanent magnets (for example, A1 and A2). In other words, one stator side permanent magnet (for example, A1) is set between a pair of adjacent electromagnetic coils (for example, C4 and C1). The stator side permanent magnets A <b> 1 to A <b> 4 and the electromagnetic coils C <b> 1 to C <b> 4 are each arcuate and positioned so as to face the rotor 20.

Each of the stator side permanent magnets A1 to A4 is polarized in the radial direction of the rotor 20, and the inner peripheral surface side (that is, the surface side facing the rotor 20) is, for example, an N pole, and the outer peripheral surface side is an S pole. ing. Each of the electromagnetic coils C1 to C4 becomes an electromagnet that is polarized in the radial direction of the rotor 20 when energized, and has an S pole and an N on its inner peripheral surface side (surface side facing the rotor 20) and outer peripheral surface side. The pole is polarized. By switching the energization direction to the electromagnetic coils C1 to C4, the polarity on the surface side facing the rotor 20 can be switched to the N pole or the S pole. Such switching is performed between the electromagnetic coils C1 to C4. It is designed to be performed independently. That is, each of the electromagnetic coils C1 to C4 has independently a non-magnet state that is in a non-energized state, a state in which the surface side facing the rotor 20 is an S pole, and a surface side that faces the rotor 20 is an N pole. The state can be switched. In addition, the circumferential direction length of each stator side permanent magnet A1-A4 is mutually set to the same length. Similarly, the circumferential lengths of the electromagnetic coils C1 to C4 are also set to be the same.

An example of the electromagnetic coils C1 to C4 is shown in detail in FIG. That is, the stator 10 made of a magnetic member (so-called iron core member) includes an annular main body portion 11, an extension portion (tooth) 12 extending from the inner peripheral surface side of the main body portion 11 toward the rotor 20 side, and an extension portion. And an arcuate tip 13 formed at the tip of the twelve. Each extension part 12 (each tip part 13) is formed at a small interval in the circumferential direction, and a coil 14 is wound around the outer periphery of each extension part 12. When the coil 14 is energized, the tip 13 facing the rotor 20 is set to the N pole or the S pole. The main body 11 may have a structure divided by portions between the electromagnetic coils C1 to C4 and the stator side permanent magnets A1 to A4.

In FIG. 1 again, two rotor-side permanent magnets B1 and B2 are fixedly arranged on the outer peripheral surface of the rotor 20 at equal intervals in the circumferential direction. Each of the rotor-side permanent magnets B1 and B2 has an arc shape, and the circumferential length thereof is the same. And the circumferential direction length of rotor side permanent magnet B1, B2 is set so that it may become longer than the circumferential direction length of stator side permanent magnet A1-A4. The rotor-side permanent magnets B1 and B2 are polarized in the radial direction of the rotor 20, and in the embodiment, the outer peripheral surface side (side facing the stator 10) is the S pole, and the inner peripheral surface side (center direction side of the rotor 20) ) Is the N pole. That is, each rotor side permanent magnet B1 and B2 is set so as to be in attraction with respect to each stator side permanent magnet A1 to A4. The magnitudes of the magnetic forces of the stator side permanent magnets A1 to A4 are set to be equal to each other. Similarly, the magnitudes of the magnetic forces of the rotor side permanent magnets b1 and B2 are also set to be equal to each other (this is not particularly noted). The same applies to the following other embodiments).

FIG. 1 shows a stopped state in which the energization of the electromagnetic coils C1 to C4 is interrupted and the rotation of the rotor 20 is stopped. In this stopped state, the rotor-side permanent magnets B1 and B2 on the 180-degree diagonal line are opposed to, for example, A1 and A3 on the 180-degree diagonal line among the stator-side permanent magnets A1 to A4 (attracting action). Receiving position).

In order to rotate the rotor 20 from the stopped state in the clockwise direction in the figure (arrow α direction in FIG. 1), for example, the polarities on the inner peripheral surface side of the electromagnetic coils C1 to C4 may be switched as follows. In the excited state in which the electromagnetic coils C1 to C4 are energized, the magnitude of the magnetic force in each of the electromagnetic coils C1 to C4 is larger than the magnitude of the magnetic force of each of the stator side permanent magnets A1 to A4 (this The same applies to the following other embodiments). That is, the electromagnetic coils C1 and C3 are N poles, while the electromagnetic coils C2 and C4 are S poles. As a result, the rotor-side permanent magnet B1 receives an attractive action from the electromagnetic coil C1 and a repulsive action from the electromagnetic coil C4, and receives a force that rotates the rotor 20 in the direction of the arrow α. Similarly, the rotor-side permanent magnet B2 receives an attractive action from the electromagnetic coil C3 and a repulsive action from the electromagnetic coil C2, and receives a force that rotates the rotor 20 in the direction of the arrow α. Thereby, the rotor 20 starts to rotate in the arrow α direction.

When the rotor 20 rotates in the direction of the arrow α from the state shown in FIG. 1, the rotor-side permanent magnet B1 approaches the stator-side permanent magnet A2 and is attracted, and similarly the rotor-side permanent magnet B2 approaches the stator-side permanent magnet A4. As a result, the rotor 20 is applied with a force that still rotates in the direction of the arrow α.

In a state where the substantially central position in the circumferential direction of the rotor-side permanent magnet B1 is the substantially central position in the circumferential direction of the stator-side permanent magnet A2, the substantially central position in the circumferential direction of the rotor-side permanent magnet B2 is approximately the circumferential direction of the stator-side permanent magnet A4. The center position is reached. After this state is reached, a repulsive force is applied to the rotor-side permanent magnet B1 with the electromagnetic coil C1 as the S pole, and at the same time, an attractive force is applied to the rotor-side permanent magnet B1 with the electromagnetic coil C2 as the N pole. Similarly, a repulsive force is applied to the rotor-side permanent magnet B2 using the electromagnetic coil C3 as the S pole, and an attractive force is applied to the rotor-side permanent magnet B2 using the electromagnetic coil C4 as the N pole at the same time. As a result, the rotor 20 continues to receive the rotating action in the direction of the arrow α by the magnetic force.

When the rotation of the rotor 20 further proceeds, the rotor 20 is in a state where the positions of the rotor-side permanent magnets B1 and B2 are reversed with respect to the state shown in FIG. Thereafter, the polarities of the electromagnetic coils C1 to C4 are imparted in the same manner as the electrode imparting for starting the rotation from the stop state in FIG. In addition, what is necessary is just to control polarity switching of the electromagnetic coils C1-C4 as mentioned above according to the rotation position of the rotor 20 (rotating shaft 30) detected by the sensor, for example.

Since the circumferential lengths of the rotor side permanent magnets B1 and B2 are longer than the circumferential lengths of the stator side permanent magnets A1 to A4, the circumferential direction of the rotor side permanent magnets B1 and B2 in the stopped state of FIG. The end portion must always overlap the electromagnetic coil in the circumferential direction (a position that is strongly influenced by the magnetic force from the electromagnetic coil), and can effectively receive attraction or repulsion from the electromagnetic coil. It becomes possible. That is, the rotational force can be reliably and promptly applied to the rotor 20 from the beginning with a large force. In addition, the same effect can be acquired if only the circumferential direction length of some rotor side permanent magnets among rotor side permanent magnets B1 and B2 is made longer than the circumferential direction length of stator side permanent magnets A1-A4. .

The pair of rotor side permanent magnets B1, B2 located on 180 diagonally, are also subject to the same time suction from the stator side permanent magnets A1~A4 respectively (or repulsion), the diameter relative to rotor 20 (rotary shaft 30) Uneven force in the direction is prevented from acting, which is preferable for smoothly rotating the rotor 20. Further, the stator side permanent magnets A1 to A4 and the electromagnetic coils C1 to C4 are arranged on the same circumference centered on the rotor 20 (rotary shaft 30 thereof) without being shifted in the radial direction of the rotor 20. Therefore, it is not necessary to increase the size in the radial direction as a whole, which is preferable for preventing an increase in size.

Further, the electromagnetic coils C1 to C4 are arranged in the circumferential direction of the rotor 20, and there is an advantage that the arrangement may be the same as that of a general electromagnetic coil in the motor. Further, the stator side permanent magnets A1 to A4 are set to have the same polarity on the inner peripheral surface side, and the polarities on the outer peripheral surface side of the rotor side permanent magnets B1 and B2 are also set to be the same. Therefore, it is preferable to prevent a situation where each permanent magnet is assembled with the wrong polarity (this advantage becomes more significant as the number of stator side permanent magnets A1 to A4 and rotor side permanent magnets B1B2 increases. ).

As a modification of FIG. 1, the circumferential lengths of the rotor-side permanent magnets B1 and B2 may be the same as or shorter than the stator-side permanent magnets A1 to A4. Further, for example, the polarity on the outer peripheral surface side of the rotor-side permanent magnets B1 and B2 may be set to the N pole, and the stator-side permanent magnets A1 to A4 may be repelled. Of course, this repulsive relationship can also be achieved by setting the polarities on the inner peripheral surface sides of the stator side permanent magnets A1 to A4 to S poles in FIG.

Further, the structures of the stator 10 side and the rotor 20 side may be reversed. That is, electromagnetic coils C1 to C4 are provided on the rotor 20 side, two stator-side permanent magnets (corresponding to B1 and B2) are provided at 180 ° symmetrical positions on the stator 10 side, and four rotors are arranged at equal intervals in the circumferential direction on the rotor 20 side. Side permanent magnets (corresponding to A1 to A4) may be provided. An example in which the structure of FIG. 1 is reversed between the stator 10 side and the rotor 20 side is shown in FIG. In addition, in this way, the relation of making the structure opposite between the stator 10 side and the rotor 20 side can be similarly adopted in the following embodiments.

FIG. 3 shows a second embodiment of the present invention. The same components as those in the above embodiment are given the same reference numerals, and redundant description thereof is omitted (this is the following third embodiment). The same applies to the following). In this embodiment, there are four stator side permanent magnets A1 to A4, four electromagnetic coils C1 to C4, and two rotor side permanent magnets B1 and B2. Is the same. However, in this embodiment, the circumferential lengths of the rotor-side permanent magnets B1 and B2 are different. That is, the rotor-side permanent magnet B1 has a circumferential length that is longer than that in the case of FIG. 1 and spans two electromagnetic coils. In the rotor-side permanent magnet B2, the circumferential length is set shorter than that in the case of FIG. 1, and is set to be substantially the same as the circumferential length of the stator-side permanent magnets A1 to A4. More specifically, the rotor-side permanent magnets B1 and B2 are formed by extending the rotor-side permanent magnet B1 to the forward side in the rotational direction while being positioned on a diagonal of 180 degrees (B1 is twice as large as B2). Length). The extension of the rotor-side permanent magnet B1 toward the rotation direction advance side is to set the rotation direction of the rotor 20 to the extension side direction. Further, the rotor side permanent magnets B1 and B2 and the stator side permanent magnets A1 to A4 are in a repulsive relationship with each other.

In the embodiment of FIG. 3, in order to rotate the rotor 20 from the stopped state of FIG. 3, the electromagnetic coils C1 to C4 may be switched in the following order.
(1) The rotor 20 rotates in the direction of the arrow α by repelling the electromagnetic coils C1 and C3 (the polarity on the surface facing the rotor 20 is N) and attracting the electromagnetic coil C2 (making it S). Start to be.
(2) When the end of the rotor side permanent magnet B1 on the rotation direction leading side comes to the stator side permanent magnet A3 (the rotation direction delay side end thereof), the attraction of the electromagnetic coil C2 is cut (non-energized), and the electromagnetic The coil C4 is a suction.
(3) When the rotation direction delay side end of the rotor side permanent magnet B2 comes to the stator side permanent magnet A4, the repulsion of the electromagnetic coils C1 and C3 is cut (the cut is not energized—the same applies hereinafter) (the electromagnetic coil C4). Continued suction).
(4) When the rotor side permanent magnet B2 enters between the stator side permanent magnets A1 and A4, the suction of the electromagnetic coil C4 is cut, the electromagnetic coils C2 and C4 are repelled, and C3 is the suction.

(5) When the end in the rotational direction of the rotor-side permanent magnet B1 comes to the stator-side permanent magnet A4, the electromagnetic coil C3 is attracted and C1 is attracted.
(6) Repulsive cuts of the electromagnetic coils C2, C4 when the rotation direction delay side end of the rotor side permanent magnet B2 comes to the stator side permanent magnet A1.
(7) When the rotor-side permanent magnet B2 comes between the stator-side permanent magnets A1 and A2, the suction cut of the electromagnetic coil C1, C1, C3 is repelled, and C4 is attracted.
(8) When the rotation direction leading end of the rotor side permanent magnet B1 comes to the stator side permanent magnet A1, the suction cut of the electromagnetic coil C4 and C2 are set as suction.
(9) The repulsion of the electromagnetic coils C1 and C3 is cut when the rotation direction delay side end of the rotor side permanent magnet B2 comes to the stator side permanent magnet A2.
(10) When the rotor side permanent magnet B2 comes between the stator side permanent magnets A1 and A2, the suction cut of the electromagnetic coil C2, C2 and C4 are repelled, and C1 is attracted.
(11) When the end of the rotor side permanent magnet B1 in the rotational direction comes to the stator side permanent magnet A2, the suction cut of the electromagnetic coil C1, C3 is set as the suction.
(12) The repulsion of the electromagnetic coils C2 and C4 is cut when the rotation direction delay side end of the rotor side permanent magnet B2 comes to the stator side permanent magnet A3.
(13) When the rotor side permanent magnet B2 comes between the stator side permanent magnets A3 and A4, the suction of the electromagnetic coil C3 is cut, C1 and C3 are repelled, and C2 is the suction.

FIG. 4 shows a third embodiment of the present invention. In this embodiment, there are four stator side permanent magnets A1 to A4, four electromagnetic coils C1 to C4, and two rotor side permanent magnets B1 and B2. Is the same. However, in the present embodiment, the stator side permanent magnets A1 to A4 and the rotor side permanent magnets B1 and B2 are set to have a repulsive relationship. In addition, auxiliary permanent magnets D1 to D4 are fixedly arranged on the stator 10 next to the stator side permanent magnets A1 to A4, more specifically, at the end of the A1 to A4 in the rotational direction. The auxiliary permanent magnets D1 to D4 are set so that the inner surface side thereof is an S pole and is in an attractive relationship with respect to the rotor side permanent magnets B1 and B2. And the circumferential direction length of each rotor side permanent magnet B1 and B2 is set so that it may become a position which overlaps with the next auxiliary permanent magnet in the rotation direction advance side from one auxiliary permanent magnet. Specifically, focusing on the rotor-side permanent magnet B1, the end of the rotor-side permanent magnet B1 in the rotational direction delay side is positioned so as to overlap the auxiliary permanent magnet D4 in the circumferential direction, and the rotation direction of the rotor-side permanent magnet B1 The advancing side end is positioned to overlap the auxiliary permanent magnet D1 in the circumferential direction.

FIG. 4 shows a state in which the rotor 20 is in a stopped state. In order to rotate the rotor 20 from this stopped state (in the direction of arrow α), the energized states of the electromagnetic coils C1 to C4 are switched in the following order. It is done.
(1) The rotor 20 starts to rotate in the direction of arrow α by making the electromagnetic coils C1 and C3 attract and simultaneously repelling the electromagnetic coils C2 and C4.
(2) When the circumferentially advanced side ends of the rotor side permanent magnets B1 and B2 reach the vicinity of the circumferentially delayed side ends of the stator side permanent magnets A2 and A4, all energization of the electromagnetic coils C1 to C4 is cut. At this time, the rotor-side permanent magnets B1 and B2 are still about to rotate in the direction of the arrow α in response to the repulsion of the stator-side permanent magnets A1 and A3.
(3) When the circumferentially advanced end portions of the rotor-side permanent magnets B1 and B2 reach the auxiliary permanent magnets D1 and D2, the electromagnetic coils C1 and C3 are repelled and the C2 and C4 are attracted.
(4) When the circumferentially advanced side ends of the rotor side permanent magnets B1 and B2 reach the stator side permanent magnets A3 and A1, all energization of the electromagnetic coils C1 to C4 is cut off.
(5) When the circumferentially advanced end portions of the rotor-side permanent magnets B1 and B2 reach the auxiliary permanent magnets D3 and D1, the electromagnetic coils C2 and C4 are repelled and the C1 and C3 are attracted.
As described above, the positions of the rotor-side permanent magnets B1 and B2 are shifted by 180 degrees from the state shown in FIG. 4, and thereafter, the energization of the electromagnetic coils C1 to C4 may be switched similarly.

In the embodiment of FIG. 4, the rotor-side permanent magnets B <b> 1 and B <b> 2 receive resistance when attempting to approach the repulsive stator-side permanent magnets A <b> 1 to A <b> 4 according to the rotation of the rotor 20 in the arrow α direction. When the stator-side permanent magnets A1 to A4 are separated from each other, a repulsive force in the direction of arrow α (an urging force in the rotational direction) is received, or the rotational urging force due to the repulsion becomes large. And when the said repulsive force (biasing force of a rotation direction) acts, the attraction | suction effect | action of auxiliary permanent magnet D1-D4 is also acquired, and the rotor 20 receives the bigger rotation energizing force to the arrow (alpha) direction.

FIG. 5 shows a fourth embodiment of the present invention. In the present embodiment, four stator side permanent magnets A1 to A4 are set at equal intervals in the circumferential direction. Similarly, four rotor side permanent magnets B1 to B4 are set at equal intervals in the circumferential direction. The polarities of the surfaces facing the rotor side of the stator side permanent magnets A1 to A4 are all set to the same polarity (for example, N pole). In the rotor-side permanent magnets B1 to B4, B1 and B3 are installed on a diagonal of 18 degrees, and B2 and B4 are positioned on a diagonal of 180 degrees.

The polarities on the outer peripheral surface sides of the rotor-side permanent magnets B1 and B3 positioned on the 180-degree diagonal line are set to be the same. Similarly, the polarities on the outer peripheral surfaces of the rotor-side permanent magnets B2 and B4 positioned on the 180-degree diagonal line are set to be the same. However, the polarity on the outer peripheral surface side of B1 and B3 and the polarity on the outer peripheral surface side of B2 and B4 are set to be different from each other. In the embodiment, the polarities of the outer peripheral surfaces of B1 and B3 are the S poles, while the polarities of the outer peripheral surfaces of B2 and B4 are the N poles. That is, with respect to the stator side permanent magnets A12 to A4, the rotor side permanent magnets B1 and B3 are in an attractive relationship, and B2 and B4 are in a repulsive relationship.

The rotor-side permanent magnets B2 and B4 that are repelled tend to stay between a pair of adjacent stator-side permanent magnets. On the other hand, the rotor-side permanent magnets B1 and B3 that are attracted tend to stay at the positions of the stator-side permanent magnets A1 to A4. Therefore, in order to obtain a state in which the circumferential intermediate position of the rotor side permanent magnets B1 to B4 is stopped in the state of FIG. 5 located at the circumferential intermediate position of the stator side permanent magnets A1 to A4, the rotor side permanent magnet is repelled. The gaps between the magnets B2 and B4 with respect to the stator side permanent magnets A1 to A4 (the radial interval of the rotor 20) may be set slightly larger than the gaps between B1 and B3 with respect to A1 to A4.

Unlike the state of FIG. 5, for example, in order to make a stop state in a state where the intermediate position in the circumferential direction of the rotor-side permanent magnet B <b> 1 is located at the boundary portion between the electromagnetic coil C <b> 4 and the stator-side permanent magnet A <b> 1, It should be set as follows. That is, the rotor-side permanent magnets B1 and B3 to be attracted may be arranged close to the advance side in the rotational direction (arrow α direction) by a slight angle on the diagonal line. On the contrary, the rotor-side permanent magnets B2 and B4 that are repelled may be arranged close to the rotation direction delay side of the rotor 20.

In order to start rotating the rotor 20 in the arrow α direction from the stopped state of FIG. 5, the electromagnetic coils C1 and C3 are energized so as to be attracted to the rotor-side permanent magnets B1 and B3 (for B2 and B4) Will be repelled). At the same time, the electromagnetic coils C2 and C4 may be energized in a repulsive relationship with the rotor-side permanent magnets B1 and B3 ((attracting to B2 and B4). The energization of the electromagnetic coils C <b> 1 to C <b> 4 may be appropriately controlled so that the permanent magnets B <b> 1 to B <b> 4 are repelled at the circumferentially delayed side ends and attracted at the circumferentially advanced side ends.

FIG. 6 shows a fifth embodiment of the present invention. In the present embodiment, four stators A1 to A4 are provided as stator side permanent magnets. Further, eight rotor side permanent magnets B1 to B4 and E1 to E4 are provided. Four electromagnetic coils C1 to C4 are provided. The circumferential lengths of the permanent magnets A1 to A4, B1 to B4, and E1 to E4 are equal to each other and shorter than the circumferential lengths of the electromagnetic coils C1 to C4, respectively. The rotor side permanent magnets E1 to E4 are arranged adjacent to the rotor side permanent magnets B1 to B4 and on the circumferential delay side.

In order to rotate the rotor 20 in the arrow α direction from the stopped state shown in FIG. 6, the energization control to the electromagnetic coils C1 to C4 may be performed as follows.
(1) All the electromagnetic coils C1 to C4 are made to repel the rotor side permanent magnets E1 to E4 (N poles). Thereby, the rotor 20 starts to rotate.
(2) When the rotor side permanent magnets B1 to B4 are generally aligned with the electromagnetic coils C1 to C4 (when the rotor side permanent magnets E1 to E4 are generally aligned with the stator side permanent magnets A1 to A4, all electromagnetic Cuts energization to the coils C1 to C4 (the rotor 20 still has a force to rotate in the direction of the arrow α due to repulsion between the stator side permanent magnets A1 to A4 and the rotor side permanent magnets E1 to E4. receive).
(3) When the rotor side permanent magnets B1 to B4 are generally aligned with the next stator side permanent magnets A1 to A4, the electromagnetic coils C1 to C4 are repelled against the rotor side permanent magnets E1 to E4. (N pole)
By repeating the above, the rotor 20 continues to rotate. The electromagnetic coils C <b> 1 to C <b> 4 are switched between the energization cut and only the specific polarity (N pole in the embodiment), and the switching between the N pole and the S pole is not necessary. This is preferable in preventing the generation of eddy current (improvement of efficiency).

FIG. 7 shows a sixth embodiment of the present invention. In the present embodiment, there are two stator side permanent magnets A1 and A2, two rotor side permanent magnets B1 and B2, and two electromagnetic coils C1 and C2. The circumferential lengths of the stator side permanent magnets A1 and A2 are set to be equal to each other. The circumferential lengths of the rotor-side permanent magnets B1 and B2 are set to be equal to each other. The circumferential lengths of the electromagnetic coils C1 and C2 are set to be equal to each other. The circumferential lengths of the rotor side permanent magnets B1 and B2 are made longer than the circumferential length of the stator side permanent magnets A1 and A2. The circumferential lengths of the electromagnetic coils C1 and C2 are sufficiently longer than the circumferential lengths of the rotor-side permanent magnets B1 and B2. And each stator side permanent magnet A1 and A2 are arrange | positioned on the 180 degree | times diagonal. The rotor side permanent magnets B1 and B2 are arranged on a 180 diagonal line. The electromagnetic coils C1 and C2 are arranged on a diagonal of 180 degrees.

The polarities on the inner peripheral surface side of the stator side permanent magnets A1 and A2 are set to be equal to each other (N pole in the embodiment). The polarities on the outer peripheral surface side of the rotor-side permanent magnets B1 and B2 are set to be different from each other (in the embodiment, B1 is set to the S pole and B2 is set to the N pole). In order to stop the rotor 20 in the state shown in FIG. 7, for example, a radial gap between each permanent magnet A1, A2 and B1 is set in a radial direction between A1, A2 and B2. It should be smaller than the gap.

In order to rotate the rotor 20 from the stopped state shown in FIG. 7, the energization control to the electromagnetic coils C1 and C2 may be performed as follows.
(1) With respect to the rotor side permanent magnet B1, the electromagnetic coil C1 is attracted (the inner peripheral surface side is N pole), and the electromagnetic coil C2 is repelled (the inner peripheral surface side is S pole). . Thereby, the rotor 20 starts to rotate in the arrow α direction.
(2) When the rotor-side permanent magnets B1 and B2 are positioned so as to overlap the electromagnetic coils C1 and C2 in the circumferential direction as a whole, the energization of the electromagnetic coils C1 and C2 is cut and the rotor 20 is moved to the arrow by inertia. Rotate in the α direction.
(3) When the circumferential intermediate position of the rotor-side permanent magnets B1 and B2 has passed the circumferential intermediate position of the electromagnetic coil C1C2, the polarity of the electromagnetic coils C1 and C2 is opposite to that in the case (1). Is energized, the rotor 20 receives a rotational force in the direction of the arrow α.
By repeating the above, the rotor 20 continues to rotate.

FIG. 8 shows a seventh embodiment of the present invention. In the present embodiment, six stators A1 to A6 are provided as stator side permanent magnets and six magnets C1 to C6 are provided as electromagnetic coils, and the circumferential lengths thereof are all set to be the same. Two rotor-side permanent magnets B1 and B2 are provided, and the circumferential length thereof is slightly longer than the total circumferential length of one electromagnetic coil and two stator-side permanent magnets. Yes. The rotor side permanent magnets B1 and B2 are arranged on a diagonal of 180 degrees.

The polarities on the inner peripheral surface side of the stator side permanent magnets A1 to A6 are set to be the same (N pole in the embodiment). The polarities on the outer peripheral surface side of the rotor-side permanent magnets B1 and B2 are set to be the same. And the polarity of the outer peripheral surface side of rotor side permanent magnet B1 and B2 is set to the relationship repelling with respect to the polarity of the inner peripheral surface side of stator side permanent magnet A1-A6 (N pole in embodiment).

In order to rotate the rotor 20 from the stopped state of FIG. 8, the energization to the electromagnetic coils C1 to C6 may be controlled as follows.
(1) With respect to the rotor-side permanent magnets B1 and B2, the rotor 20 starts to rotate by attracting the electromagnetic coils C2 and C5 on the diagonal of 180 degrees and repelling C3 and C6.
(2) When the circumferential end of the rotor side permanent magnets B1 and B2 reaches the next electromagnetic coils C3 and C6, C3 and C6 are attracted and C1 and C4 are repulsive.
(3) When the circumferentially advanced end of the rotor-side permanent magnets B1 and B2 reaches the next electromagnetic coils C4 and C1, C4 and C1 are attracted and C2 and C5 are repulsive.
Thereby, the rotor 20 is rotated 180 degrees from the state of FIG. 8, and thereafter, the energization of the electromagnetic coils C1 to C6 may be switched and controlled in the same manner as described above.

FIG. 9 shows an eighth embodiment of the present invention. In the present embodiment, three stator side permanent magnets A1 to A3 and three C1 to C3 electromagnetic coils are provided at equal circumferential intervals. Two rotor-side permanent magnets B1 and B2 are provided. The rotor side permanent magnets B1 and B2 are arranged on a diagonal of 180 degrees. In the circumferential length, the stator side permanent magnets A1 to A3 are the shortest, the electromagnetic coils C1 to C3 are the longest, and the rotor side permanent magnets B1 and B2 are intermediate lengths.

The polarities on the inner peripheral surface side of the stator side permanent magnets A1 to A3 are set to be the same (N pole in the embodiment). The polarities on the outer peripheral surface side of the rotor-side permanent magnets B1 and B2 are set to be the same. The polarities on the outer peripheral surfaces of the rotor-side permanent magnets B1 and B2 are set so as to attract the polarities on the inner peripheral surfaces of the stator-side permanent magnets A1 to A3 (S pole in the embodiment).

In order to rotate the rotor 20 in the direction indicated by the arrow β from the stopped state of FIG. 9, the energization of the electromagnetic coils C1 to C3 may be controlled as follows. In the case of FIG. 8, the rotation direction of the rotor 20 is opposite to that in the above-described embodiment.
(1) The rotor 20 starts to rotate in the direction of the arrow β by causing the electromagnetic coil C1 to repel the rotor-side permanent magnets B1 and B2.
(2) When the circumferentially advanced end of the rotor-side permanent magnet B2 reaches the stator-side permanent magnet A2, the energization to the electromagnetic coil C1 is cut and C2 is repelled.
(3) When the circumferentially advanced side end of the rotor-side permanent magnet B1 comes to the stator-side permanent magnet A3, the energization of the electromagnetic coil C2 is cut, and C3 is repelled.

Thus, by controlling the electromagnetic coil to repel in the order of C1, C2, and C3, the rotor 20 continues to rotate in the arrow β direction. If the electromagnetic coils are repelled in the order of C2, C1, and C3 from the state of FIG. 9, the rotor 20 can be rotated in the direction opposite to the arrow β in FIG. In addition, when controlling to repel in the order of C1, C2, and C3, and when controlling to repel in the order of C2, C1, and C3, electromagnetic coils other than the electromagnetic coil that is repelled, By performing suction at an appropriate timing, a larger rotational torque can be obtained.

FIG. 10 shows a ninth embodiment of the present invention. In the present embodiment, three stators A1 to A3 are provided as stator side permanent magnets, and three coils C1 to C3 are provided as electromagnetic coils. Four rotor side permanent magnets B1 to B4 are provided. In the rotor-side permanent magnet, B1 and B3 are positioned on a 180-degree diagonal line, and 2 and B4 are positioned on a 180-degree diagonal line. The stator side permanent magnets A1 to A3 have the same circumferential length. The electromagnetic coils C1 to C3 have the same circumferential length. The rotor-side permanent magnets B1 to B4 have the same circumferential length. The circumferential lengths of the stator side permanent magnets A1 to A3 are the shortest, the electromagnetic coils C1 to C3 are the longest, and the rotor side permanent magnets B1 to B4 are intermediate lengths.

The polarities on the inner peripheral surface side of the stator side permanent magnets A1 to A3 are set to be the same (N pole in the embodiment). The polarities on the outer peripheral surface side of the rotor-side permanent magnets B1 and B2 are set to be the same. The rotor side permanent magnets are set so that B1 and B3 are attracted to the stator side permanent magnets A1 to A3 (in the embodiment, set to the S pole), and B2 and B4 are repelled. It is set (in the embodiment, it is set to N pole). In order to rotate the rotor 20 from the stopped state of FIG. 9, the energization of the electromagnetic coils C1 to C4 may be controlled in the same manner as in the case of FIG.

FIG. 11 shows a tenth embodiment of the present invention. In this embodiment, the case where the electromagnetic coil is provided in the rotor 20 is shown. That is, two stators A1 and A2 are provided on the 180-degree diagonal line as the stator side permanent magnets. Further, four rotor side permanent magnets B1 to B4 are provided at equal intervals in the circumferential direction. And four electromagnetic coils are provided so that it may be located between each rotor side permanent magnet B1-B4. The stator side permanent magnets A1 and A2 are longer than the circumferential lengths of the rotor side permanent magnets B1 to B4 so that the circumferential ends of the stator side permanent magnets A1 and A2 always overlap the electromagnetic coils C1 to C4 in the circumferential direction. From the stopped state of FIG. 11, the rotor 20 starts to rotate in the direction of arrow α, for example, by attracting the electromagnetic coils C1 and C3 and repelling C2 and C4. Thereafter, the rotor 20 continues to rotate by switching the energization of the electromagnetic coils C1 to C4 in a manner similar to the case of FIG. Note that FIG. 11 corresponds to the case where the stator 10 side and the rotor 20 side have an opposite relationship to the structure of FIG.

FIG. 12 shows an example of a control system configured when the rotating device shown in FIG. 1 is used as the motor 1, for example. In FIG. 12, U is a controller (control unit) configured using a microcomputer, and K is a drive circuit that switches the energization state of each of the electromagnetic coils C1 to C4. A signal from the rotation sensor S1 is input to the controller U. The rotation sensor S1 detects a rotational position of the rotary shaft 30, that is, detects a relative rotational position of the rotor side permanent magnets B1 and B2 with respect to the stator side permanent magnets A1 to A4. The controller U controls the drive circuit K according to the rotational position of the rotating shaft 30 detected by the rotation sensor S1 so that the energized states of the electromagnetic coils C1 to C4 are performed in the above-described manner. Such control of the controller U is similarly performed also in the embodiments in FIG.

FIG. 13 shows an example in which the rotating device 1 according to the present invention is incorporated in a reciprocating engine E, and the rotating device 1 is used as a generator. That is, the pulley 51 is fixed to the crankshaft 50 of the engine E, and the pulley 52 is fixed to the rotating shaft 30 of the rotating device 1 fixed to the engine E. An interlocking member (winding medium node) 52 such as a chain is stretched between the pulleys 51 and 52. The crankshaft 50 and the rotating shaft 30 are interlocked so as to cancel (suppress) the angular velocity fluctuation of the crankshaft 50. For example, at the timing at which the angular velocity of the crankshaft 50 is minimized, the stator side permanent magnet and the rotor side permanent magnet are interlocked so as to be accelerated by attraction (or to be accelerated by repulsion). On the contrary, at the timing when the angular velocity of the crankshaft 50 is maximized, the stator side permanent magnet and the rotor side permanent magnet are interlocked so as to be decelerated by repulsion (or decelerated by attraction). Even when the rotating device 1 is used as a motor for promoting (assisting) the rotation of the crankshaft 50, the angular velocity fluctuation of the crankshaft 50 can be canceled (suppressed) as the above-described interlocking relationship. Of course, the rotating device 1 is used in conjunction with an appropriate machine for vibration suppression, such as applying to various machines that generate periodic speed fluctuations other than a reciprocating engine, such as a reciprocating press machine. be able to.

Although the embodiment has been described above, the present invention is not limited to the embodiment, and can be appropriately changed within the scope described in the scope of claims. For example, the invention includes the following cases. . In each embodiment of FIGS. 1-10, you may make it provide an electromagnetic coil in the rotor 20 side. By driving the rotor 20 with an external drive source, it can also be used as a generator that extracts electric power from an electromagnetic coil. Moreover, as seen in a hybrid vehicle, it may be used by switching between both a function as a motor and a function as a generator. One or more stator-side permanent magnets and one rotor-side permanent magnet need only exist. In particular, when used as a generator, only one stator-side permanent magnet and one rotor-side permanent magnet may be provided. The number of stator side permanent magnets and the number of rotor side permanent magnets can be changed as appropriate in addition to those shown in the embodiment, and the number of magnets themselves is not limited. Of course, the object of the present invention is not limited to what is explicitly stated, but also implicitly includes providing what is substantially preferred or expressed as an advantage.

The present invention can be used as a rotating device such as a motor.

U: controller K: drive circuit S1: rotation sensors A1 to A6: stator side permanent magnets B1 to B4: rotor side permanent magnets C1 to C6: electromagnetic coils D1 to D4: auxiliary permanent magnets E1 to E4: rotor side permanent magnets 1: Motor (rotating device)
10: Stator 20: Rotor 30: Rotation axis α, β: Direction of rotation

Claims (4)

A stator and a rotor rotated in the stator,
The stator is provided with a plurality of stator-side permanent magnets that are magnetically poled in the radial direction of the rotor, with an interval in the circumferential direction,
The rotor is provided with a plurality of rotor-side permanent magnets that are magnetically poled in the radial direction of the rotor at intervals in the circumferential direction,
A plurality of electromagnetic coils set so as to be poled in the radial direction of the rotor are disposed on one side member of the stator and the rotor,
Of the stator-side permanent magnet and the rotor-side permanent magnet, a permanent magnet provided on the one-side member is a one-side permanent magnet, and a permanent magnet provided on the other-side member of the stator and the rotor is When the other-side permanent magnet is used, the plurality of electromagnetic coils are dispersedly arranged so as to be located between the one-side permanent magnets, respectively .
By switching the energization state for the plurality of electromagnetic coils, the rotor is a motor that is rotationally driven,
The circumferential length of at least some other permanent magnets among the plurality of other permanent magnets is longer than the circumferential length of the one permanent magnet,
The plurality of stator-side permanent magnets are set so that the polarities of the surfaces facing the rotor side are the same as each other,
The plurality of rotor-side permanent magnets are set so that polarities of surfaces facing the stator side are the same polarity.
Each stator side permanent magnet is set to have a repulsive relationship with each rotor side permanent magnet,
The one side member is provided with an auxiliary permanent magnet that performs an attracting action on the other side permanent magnet at a position adjacent to the end face on the rotation direction advance side of the rotor of the one side permanent magnet.
A rotating device using a permanent magnet. In claim 1,
The circumferential lengths of the one side permanent magnets are equal to each other,
Each of the other permanent magnets has the same circumferential length and is longer than the circumferential length of the one permanent magnet.
A rotating device using a permanent magnet. In claim 1 or claim 2,
A first state in which the rotor is rotationally driven by switching the energization state to the plurality of electromagnetic coils, and a generator in which electric power is extracted from the electromagnetic coils by rotationally driving the rotor. A rotating device using a permanent magnet, which is used by switching between two states. In claim 1 or claim 2,
A rotating device using a permanent magnet, wherein the electromagnetic coil is provided in the stator.

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