JP2008118839A - Motor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a motor in which performance for reducing noises, heat generation and the like is improved while improving performance of rotational speed-torque characteristics, by employing novel constitution of the motor. <P>SOLUTION: The motor is constituted by a central stator 2, an intermediate rotor 6 of a hollow cylindrical structure, and an outside rotor 11 of a hollow cylindrical structure, wherein the intermediate rotor has a rotating shaft, an inner peripheral face faces an outer peripheral face of the central stator with a predetermined space, and the rotor is arranged outside the central stator, while the outside rotor has a rotating shaft, an inner peripheral face faces an outer peripheral face of the intermediate rotor with a predetermined space, and the outside rotor is arranged outside the intermediate rotor. The intermediate rotor and the outside rotor are rotatably supported by bearing portions for the intermediate rotor and the outside rotor provided at the central stator. Any one of an armature, a permanent magnet or a conductor is selectively combined with the central stator, the intermediate rotor, and the outer rotor for arrangement and fixing, then a DC or an AC power source is supplied to the armature, by which the intermediate rotor is rotated outside the central stator, and moreover the outside rotor is rotated outside the intermediate rotor in the same direction as the intermediate rotor. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a motor that is used as a drive system power source by converting electrical energy into mechanical energy in a wide range of fields such as our daily life and industry.

As mentioned above, motors are used in many ways as drive system power sources for society in general, including toys and various devices such as video, communication, information, office work, home appliances, automobiles, machine tools, etc. Developed and produced.
The motor also functions as a power generator by rotating a rotor with external energy such as wind power or hydraulic power to induce a current on the stator side.
Many types of motors and generators have been developed and produced, but there are high demands for higher efficiency and higher performance.

  In order to meet the above requirements, motors with high performance, including improvements in permanent magnet materials and armature winding methods, high performance and high functionality of power semiconductors in drive system circuits, as well as development of related technologies, etc. A generator is being developed and provided.

Problems to be solved by the invention

In general, a motor switches the direction of a current flowing through an electric wire placed in a magnetic field, switches an armature that flows a current, or changes the magnetic flux direction to continuously rotate the rotor side.
In many conventional motors, the rotational speed-torque characteristics of the motor are controlled by controlling the current, voltage, frequency, etc. that flow through the armature as a set of stator and rotor, and by improving the performance of the magnet. Was decided.

An object of the present invention is to provide a motor that has improved performance in terms of noise, vibration, heat generation, etc., as well as improved performance of rotational speed-torque characteristics, by adopting a new configuration of the motor. is doing.
And in order to achieve the above-mentioned object, in the application number of Japanese Patent Application No. 2005-38380 filed by the same person as the present applicant, the intermediate rotor rotates inside the outer stator, and the inside of the intermediate rotor rotates centrally. We have applied for a new configuration of a central / intermediate adder motor with a rotating child.
The present invention relates to a central / intermediate adder type motor filed in Japanese Patent Application No. 2005-38380, in which a stator is arranged in the center, an intermediate rotor is rotated outside the central stator, It is an object of the present invention to provide an intermediate / outside rotor abduction motor having a novel configuration for rotating an outer rotor in the same direction as the intermediate rotor.

Means for solving the problem

  In order to achieve the above object, the invention according to claim 1 is characterized in that the central stator and the rotation shaft have an inner peripheral surface facing the outer peripheral surface of the central stator at a predetermined interval, and the central fixed An intermediate rotor having a hollow cylindrical structure arranged on the outer side of the rotor and an inner peripheral surface having a rotation axis facing the outer peripheral surface of the intermediate rotor with a predetermined interval and arranged on the outer side of the intermediate rotor It is composed of an outer rotor having a hollow cylindrical structure, and the intermediate rotor and the outer rotor are rotatably supported by bearing portions for the intermediate rotor and the outer rotor provided in the central stator, and the central stator・ Select either armature, permanent magnet, or conductor for the intermediate rotor, outer rotor, and place and fix them in combination. By supplying DC or AC power to the armature, the outer side of the center stator can be Rotate the rotor, and further outside the intermediate rotor Characterized in that rotating the outer rotor to the intermediate rotor in the same direction.

  In order to achieve the above object, the invention described in claim 2 is a brush for supplying power to the armature for the central stator and the armature for the intermediate rotor in addition to the invention of claim 1. The intermediate rotor having a hollow cylindrical structure is connected to the armature for the intermediate rotor and the slip ring that is in contact with the brush, and the rotor is connected to the outer rotor. It is characterized in that permanent magnets having different poles are arranged and fixed in the circumferential direction of the iron core.

  In order to achieve the above object, in addition to the invention described in claim 1, the invention described in claim 3 is a brush for supplying power to the central stator armature and the intermediate rotor armature to the central stator. The intermediate rotor having a hollow cylindrical structure is connected to the armature for the intermediate rotor and the slip ring that is in contact with the brush, and the rotor is connected to the outer rotor. A cage structure is employed in which a metal conductor rod is housed in the direction of the rotation axis on the surface of the iron core and both sides of the metal conductor rod are fixed with a short-circuit ring.

  In order to achieve the above-mentioned object, the invention according to claim 4 adds to the invention according to claim 1 in addition to supplying power to the central stator armature and the outer rotor armature to the central stator. The side brush A and the minus side brush B are respectively arranged and fixed, and are connected to an intermediate rotor having a hollow cylindrical body structure with permanent magnets having different poles in the circumferential direction of the rotor and the plus side brush A, and an outer rotor. A plus side slip link connected to the plus side brush C that contacts the commutator, and a minus side slip connected to the minus side brush D that is connected to the minus side brush B and contacts the commutator of the outer rotor. Each of the links is fixed, and an outer rotor armature and a commutator connected to the outer rotor armature are arranged and fixed on the outer rotor.

The invention's effect

The present invention has the following effects by the above means.
In the first aspect of the present invention, the central stator and a hollow having a rotation shaft and having an inner peripheral surface facing the outer peripheral surface of the central stator with a predetermined interval are disposed outside the central stator. An intermediate rotor having a cylindrical structure, and an outer rotation of a hollow cylindrical structure having an axis of rotation and having an inner peripheral surface facing the outer peripheral surface of the intermediate rotor with a predetermined interval and arranged outside the intermediate rotor The intermediate rotor and the outer rotor are rotatably supported by bearings for the intermediate rotor and the outer rotor provided in the central stator, and the central stator, the intermediate rotor, and the outer rotation. The armature, permanent magnet, or conductor is selected from the armature, permanent magnet, or conductor and fixed to the child, and the intermediate rotor is rotated outside the central stator by supplying a DC or AC power to the armature. The intermediate rotor on the outside and the outer rotor on the middle It is possible to provide a novel motor having a structure different from that of the prior art of rotating the rotor in the same direction.

  And in the armature or permanent magnet arranged and fixed to the intermediate rotor of the hollow cylindrical structure, the outer rotor can be moved inside the intermediate rotor by effectively using the magnetic force generated respectively outside and inside the radial direction of the motor. Since the motor is rotated and the intermediate rotor is rotated inside the central stator, the motor efficiency can be improved, and the intermediate rotor as well as the outer rotor can be used as the output shaft.

  The intermediate / outside rotor abduction motor according to the present invention includes a rotational speed-torque characteristic obtained between the central stator and the intermediate rotor, and a rotational speed-torque characteristic obtained between the intermediate rotor and the outer rotor. Therefore, the efficiency of electric energy consumption can be improved by performing appropriate drive control separately between the central stator and the intermediate rotor, and between the intermediate rotor and the outer rotor. The motor's rotational speed-torque characteristics can be set arbitrarily in a wide range. Motors that increase torque output within a specific rotational range, motors that exhibit high torque over a wide range, motors that emphasize high speed rotation, etc. It is possible to easily set and provide a motor having characteristics of the output characteristics.

  Furthermore, in the intermediate / outer rotor abduction motor according to the present invention, the outer rotor is further rotated outside the intermediate rotor rotating outside the central stator, so that, for example, the same high-speed rotation speed is obtained. In the case of the conventional motor, the load at the time of rotation of the outer rotor is borne by the bearing of the inner stator in the case of the conventional motor. It is also possible to bear the load during rotation of the rotor at the bearing part of the intermediate rotor, and furthermore, since the load during rotation of the intermediate rotor is beared by the bearing part of the central stator, between each rotating shaft and each bearing part This makes it possible to share and reduce the load during rotation, increase the durability between each rotating shaft and each bearing portion, and reduce noise, vibration and heat generation.

  In addition, if a braking device is installed between the central stator and the intermediate rotor, when it is determined that the motor does not require high torque or rotation during no load or low load, the central stator will start at the same time as braking is started. In conjunction with this, the rotation of the intermediate rotor is braked and stopped in conjunction with the power supply to the armature, and the outer rotor is rotated only outside the intermediate rotor by continuously supplying power to the armature of the intermediate rotor. You can also.

In the invention described in claim 2, in addition to the configuration of the invention described in claim 1, the central stator is provided with a central stator armature and a brush for supplying power to the intermediate rotor armature. An intermediate rotor having a hollow cylindrical structure is connected to the armature for the intermediate rotor and the armature, and a slip ring that contacts the brush is disposed and fixed, and the outer rotor is different in the circumferential direction of the rotor core. Since the configuration in which the pole permanent magnets are arranged and fixed is adopted, the intermediate rotor is rotated by the magnetic force generated between the armature of the central stator and the armature of the intermediate rotor, and the armature of the intermediate rotor and the outside The outer rotor can be rotated by a magnetic force generated between the permanent magnets of the rotor.
And, by adopting a permanent magnet in the outer rotor and being able to place the permanent magnet inside the outer rotor, it is possible to prevent the permanent magnet from being damaged due to centrifugal force or the adhesive peeling, etc. Since the permanent magnets are uniform in shape and weight, the rotational accuracy is high, and an intermediate / outside rotor abduction motor capable of high rotation can be provided.

  In the invention described in claim 3, in addition to the configuration of the invention described in claim 1, the central stator is provided with a central stator armature and a brush for supplying power to the intermediate rotor armature. An intermediate rotor having a hollow cylindrical body structure is connected to the armature for the intermediate rotor and the armature, and a slip ring that is in contact with the brush is disposed and fixed, and the outer rotor has a rotation shaft on the surface of the rotor core. A cage structure with metal conductor rods stored in the direction and fixed on both sides of the metal conductor rods with short-circuited rings is used, so an outer rotor incorporating the advantages of a robust and simple structure induction motor can be manufactured. -An outer rotor abduction motor can be provided at a low cost.

  In the invention according to claim 4, in addition to the configuration of the invention according to claim 1, the plus-side brush A and minus which feed the armature for the central stator and the armature for the outer rotor to the center stator. The side brushes B are respectively arranged and fixed, and are connected to the intermediate rotor of the hollow cylindrical structure with the permanent magnets having different poles in the circumferential direction of the rotor and the plus brush A and the commutator of the outer rotor. The plus side slip link connected to the plus side brush C to be connected and the minus side slip link connected to the minus side brush D connected to the minus side brush B and contacting the commutator of the outer rotor are respectively fixed. By arranging and fixing the outer rotor armature and the outer rotor armature to the outer rotor, the conventional brushed DC between the intermediate rotor and the outer rotor. Since the same rotation principle as the motor is adopted, the DC motor with brush manufacturing technology and manufacturing method can be used, and the speed control is easy and the torque for starting and acceleration / deceleration can be selected arbitrarily. An intermediate / outside rotor abduction motor can be manufactured and provided.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is an explanatory cross-sectional view in the direction of the rotation axis of an intermediate / outer rotor abduction motor 1 according to the first aspect of the present invention, and shows a basic configuration of the present invention.
The intermediate / outside rotor abduction motor 1 has a central stator 2 and a rotation shaft 3, and an inner peripheral surface 4 faces an outer peripheral surface 5 of the central stator 2 with a predetermined distance therebetween. An intermediate rotor 6 having a hollow cylindrical structure disposed outside the rotor 2 and a rotating shaft 7 and an inner peripheral surface 8 face the outer peripheral surface 9 of the intermediate rotor 6 with a predetermined distance therebetween, and the intermediate rotation An outer rotor 10 having a hollow cylindrical structure arranged on the outer side of the rotor 6 is further provided. The central stator 2, the intermediate rotor 6, and the outer rotor 10 may be any one of an armature, a conductor, and a permanent magnet. The combination is selected and fixed.

The armature is selected from each drive control method such as switching of the armature to be energized, switching of the direction of the current flowing through the armature, and changing the direction of the magnetic flux of the armature. Power.
And in the method of feeding a DC power supply, the DC power supply is fed from a brush to a commutator and the current flow is switched by the rotational difference between them, and the DC power supply is switched between u-phase and v-phase by switching elements constituting a three-phase inverter. , A method of driving by performing a commutation operation with the w phase, and the like, and further, as a conduction method, two driving methods of a 120-degree conduction method and a 180-degree conduction method are conceivable.
In addition, as a method of feeding an AC power supply, a method of feeding a single-phase AC power supply or a three-phase AC power supply is conceivable, and a method of rectifying the AC power supply to create a DC power supply and feeding the DC power supply to the armature In addition, when two or more armatures are used for the central stator, intermediate rotor, and outer rotor, a DC power supply is supplied to one armature and an AC power supply is supplied to the other armature. A combination type that supplies power is also conceivable.
The purpose is to rotate the intermediate rotor outside the central stator and rotate the outer rotor in the same direction as the intermediate rotor outside the intermediate rotor.

In the rotation shaft 3 of the intermediate rotor 6 and the rotation shaft 7 of the outer rotor 10, the rotation center is set on the rotation center axis AA ′ of the intermediate / outer rotor abduction motor 1 in the central stator 2. The rotating shaft 3 of the intermediate rotor 6 is rotatably supported by the bearing portion 11, and the rotating shaft 7 of the outer rotor 10 is mounted on the bearing portion 12 whose center of rotation is set on the rotating center axis A-A ′. It is supported rotatably.
Further, in the bearing portion for the outer rotor 10, in addition to the bearing portion 12 for the outer rotor provided in the central portion of the central stator 2 described above, the outer rotor rotates in the central portion of the intermediate rotor 6a as shown in FIG. It is also conceivable to provide a bearing portion 13 for the rotating shaft 7a of the child 10a and to support the rotating shaft 7a of the outer rotor 10a only by the bearing portion 13.
Furthermore, a method of improving the rotation accuracy, durability, and the like by using the bearing portion 13 in FIG. 2 and the bearing portion 12 for the outer rotor provided at the central portion of the central stator 2 in FIG.
For example, in a notebook type or desktop type personal computer, a bearing unit for an outer rotor when the central processing unit is used as a disk drive motor of an HDD used for reading or writing data is preliminarily a disk In the HDD main body, when the disk is repeatedly used without replacing the disk, in addition to the embodiment shown in FIGS. 1 and 2, the disk is attached to the outer rotor 10b of the motor as shown in FIG. A method is also conceivable in which the lid 15 provided with the bearing portion 14 for the rotating shaft 7c of 10b is fixed from the outside to the base portion 16 side to which the central stator is attached with a screw, a screw or the like to increase the rotation accuracy.
Therefore, the bearing portion between the central stator and the intermediate rotor or between the intermediate rotor and the outer rotor may be selected and determined in consideration of the purpose of use of the motor, cost, and the like.

The central stator / intermediate rotor / outer rotor can be selected from armatures, conductors, and permanent magnets and combined and fixed, but there are various combinations of armatures, conductors, and permanent magnets. Conceivable.
In the intermediate / outer rotor abduction motor 1a according to the second aspect of the present invention, armatures are employed for the central stator and the intermediate rotor, respectively, and the outer rotor has a circumferential direction of the rotor core. In combination with permanent magnets with different poles.
In the intermediate / outer rotor abduction motor 1b according to the invention described in claim 3, armatures are employed for the center stator and the intermediate rotor, respectively, and the rotor core surface is used for the outer rotor. The metal conductor rods were housed in the direction of the rotation axis, and a cage structure in which both sides of the metal conductor rods were fixed with a short-circuit ring was combined.
In the intermediate / outer rotor abduction motor 1c according to the invention described in claim 4, armatures are employed for the center stator and the outer rotor, respectively, and the rotor core is used for the intermediate rotor. Permanent magnets with different poles in the circumferential direction were adopted and combined.

  Further, in the combination of armature, conductor and permanent magnet for rotating the intermediate rotor outside the central stator and rotating the outer rotor outside the intermediate rotor in the same direction as the intermediate rotor, In addition to the combination method, for example, there are intermediate and outer rotor abduction motors in which permanent magnets having different poles are arranged in the circumferential direction of the central stator, and armatures are employed for the intermediate rotor and the outer rotor, respectively. In addition, the power supply to the intermediate rotor and the outer rotor is complicated, but the intermediate and outer rotor abduction types are constructed using armatures for the central stator, intermediate rotor, and outer rotor, respectively. A motor or the like is also conceivable.

  FIG. 4 is an explanatory cross-sectional view in the direction of the rotation axis of the intermediate / outside rotor abduction motor 1a according to the invention of claim 2, and the intermediate / outside rotor abduction type according to the invention of claim 1. In addition to the configuration of the motor 1, a configuration in which an armature is selected and fixed to each of the central stator and the intermediate rotor, and permanent magnets having different poles in the circumferential direction of the rotor core are disposed and fixed to the outer stator. It was adopted.

In the description of the central stator, the intermediate rotor, and the outer rotor constituting the intermediate / outer rotor rotating motor 1a, the outer rotor, the intermediate rotor, and the central stator will be described in this order.
In FIG. 4, reference numeral 17 denotes an outer rotor that employs permanent magnets, and the circumferential direction inside the outer rotor is divided into n, and each of the N-pole permanent magnets 18 a,... And the S-pole permanent magnets 18 b,. The rotation shaft 19 is disposed and fixed at the center of the outer rotor 17.
In the present embodiment, a case where a permanent magnet is adopted as the field magnetic pole of the outer rotor will be described. However, a method of generating a main magnetic flux by providing a field winding on the outer rotor and passing an exciting current through the field winding. In addition, a method using a salient pole core instead of a permanent magnet is also conceivable.
The outer rotor 17 rotates the outer rotor on the bearing portion 21 whose center of rotation is set on the rotation center axis AA ′ of the intermediate / outer rotor outer rotation motor 1a in the intermediate rotor 20 described later. The shaft 19 is rotatably supported and rotates outside the intermediate rotor 20 on the central axis AA ′.

Reference numeral 20 denotes an intermediate rotor disposed inside the outer rotor 17. Each armature 24, 24, 24,... For the intermediate rotor, in which the armature winding 23 is wound around the laminated core 22, The armature mounting portions 25, 25, 25,... Provided in the main body of the intermediate rotor 20 are firmly arranged and fixed in an insulated state so that magnetic flux is generated in the motor radial direction, and the rotary shaft 26 is centered on the intermediate rotor 20 The arrangement is fixed to the part.
The intermediate rotor 20 rotates the intermediate rotor on a bearing portion 28 provided with a rotation center on the rotation center axis A-A 'of the intermediate / outer rotor rotation type motor 1a in the center stator 27 described later. The shaft 26 is rotatably supported and rotates outside the central stator 27 on the central axis A-A ′.
Furthermore, the intermediate rotor 20 includes a slip ring A and a slip ring at positions where the brush A, the brush B, and the brush C that are arranged and fixed on the base 32 side of the intermediate / outside rotor abduction motor 1a are opposed to each other. B and slip ring C are arranged and fixed, and the slip rings A, B, and C are connected to the armature windings 23, 23, 23,... Of the armature for the intermediate rotor, respectively.
However, in the embodiment in FIG. 4, the connection between each slip ring A, B, C and each armature winding 23, 23, 23,... Of each intermediate rotor armature is omitted.

A central stator 27 is located on the inner side of the intermediate rotor 20 and is disposed and fixed on the base side 32 of the intermediate / outside rotor abduction motor 1a. The central stator 27 winds an armature winding 30 around a laminated core 29. The armatures 31, 31, 31,... For the rotated central stator are radially arranged and fixed at positions where magnetic flux is generated in the motor radial direction during power feeding.
Further, on the base 32 side, the armature windings 23 and 23 of the armature for the intermediate rotor are arranged via the slip ring A, slip ring B, and slip ring C arranged and fixed to the intermediate rotor 20 as described above. , 23,... Are arranged and fixed in an insulated state at positions facing the slip rings A, B, and C, respectively, for supplying the three-phase AC power to the brushes A, B, and C.
When the positions of the brush A, the brush B, and the brush C are set so that the distance between the slip ring A, the slip ring B, and the slip ring C fixed to the intermediate rotor 20 is set, for example, It is good to arrange radially at equal intervals.
However, in FIG. 4, the brush A and the brush C are arranged on one side, and the brush B is arranged on the other side.
Then, the intermediate rotor 20 rotates on the outer side of the central stator 27, and further, the outer rotor 17 rotates on the outer side of the intermediate rotor 20 in the same direction as the intermediate rotor 20.
As described above, the intermediate / outside rotor abduction motor 1a is constituted and assembled by the main components described above.

  In this embodiment, for each armature arranged and fixed on the central stator 27 and the intermediate rotor 20, switching of the armature to be energized, switching of the direction of the current flowing through the armature, Among the drive control methods that change the direction of the magnetic flux, an AC power source is supplied to each armature of the intermediate rotor, and an armature that is energized to the central stator and a current that flows through the armature In the method of changing the direction, the DC power supply is supplied, and in the method of changing the magnetic flux direction of the armature, the AC power supply is supplied from the drive control device, and the motor is continuously rotated.

  There are many combinations of the number of armatures of the intermediate rotor 20 with respect to the number of magnetic poles of the permanent magnet fixed to the outer rotor 17 and the number of armatures of the central stator 27 with respect to the number of armatures of the intermediate rotor 20. In consideration of cogging torque, torque pulsation performance, rotational speed-torque characteristics required for the motor, etc., motor performance, application, cost, etc., it is appropriately selected and determined.

Next, the operation will be described.
In the drive control method for the intermediate / outer rotor abduction motor according to the present invention, basically, in addition to voltage and current control, frequency control, speed control, position control, etc. It is conceivable to employ a drive control method combined with control, and an appropriate selection is made from each drive control method in consideration of the purpose and use environment of the motor, performance and cost required for the motor, and the like.

  In the operation between the outer rotor 17 and the intermediate rotor 20, the brushes A, B, and C arranged and fixed on the base 32 side of the intermediate / outer rotor external rotation motor 1a are arranged and fixed on the intermediate rotor 20. When three-phase AC power is supplied to the armature windings 23, 23, 23,... Of the armature in the intermediate rotor via the slip ring A, slip ring B, and slip ring C, the intermediate rotor 20 is supplied. A rotating magnetic field is generated, and both the outer rotor 17 and the intermediate rotor 20 try to rotate synchronously in the same direction by the attractive force generated between the rotating magnetic field and the magnetic poles of the permanent magnets arranged and fixed on the outer rotor 17. However, like the outer rotor 17, the intermediate rotor 20 also has a rotating shaft 26 that is rotatably supported.

  At the same time, the magnetic pole position of the rotating magnetic field generated in the intermediate rotor 20 is detected or estimated, and the armature winding 30 is attached to the laminated core 29 disposed and fixed on the central stator 27 based on the detection signal and position estimation signal. The intermediate rotor 20 rotates the same direction as the outer rotor 17 to the armatures 31, 31, 31,... For the wound central stator. The rotor 20 rotates, and further, the outer rotor 17 can continuously rotate outside the intermediate rotor 20 in the same direction as the intermediate rotor.

In the power supply method for switching the armature to be energized to the central stator armatures 31, 31, 31,... Arranged and fixed on the central stator 27, for example, a rotating magnetic field generated in the intermediate rotor 20. The N magnetic pole is detected by a position sensor such as a Hall element, and based on the detected signal, an electronic circuit composed of a semiconductor or the like determines the leading side of the rotating magnetic field generated in the intermediate rotor 20 from the N pole position. The armature on the side of the central stator 27 that is positioned is excited by flowing a current generated by the S pole, and the N pole of the intermediate rotor 20 is attracted to rotate the intermediate rotor 20.
Next, when the N pole of the rotating magnetic field passes through the Hall element, the power supply to the armature on the central stator 27 side is stopped and de-energized, and the intermediate rotor 20 continues to rotate with inertial force.
When the south pole in the rotating magnetic field generated in the intermediate rotor 20 that continues to rotate is detected by the Hall element, the armature of the central stator 27 located on the advance side from the north pole position of the intermediate rotor 20 By exciting the current generated by the poles, the N poles of the intermediate rotor 20 are attracted to rotate the intermediate rotor 20.
When the S pole of the rotating magnetic field passes through the Hall element again, the power supply to the central stator armature is stopped and de-energized, and the intermediate rotor 20 continues to rotate again with inertial force.
The intermediate rotor 20 continues to rotate continuously outside the central stator 27 by finely repeating the above-described operation, and further, the outer rotor 17 is disposed outside the intermediate rotor 20 in the same direction as the intermediate rotor. Rotate continuously.
As a result, the rotational speed-torque characteristic obtained by the intermediate rotor 20 continuously rotating on the outer side of the central stator 27, and the outer rotor 17 on the outer side of the intermediate rotor 20 in the same direction as the intermediate rotor. The sum of the rotational speed-torque characteristics obtained by continuous rotation becomes the rotational speed-torque characteristics obtained by the intermediate / outer rotor abduction motor 1a.

Further, in the power supply method for switching the flowing direction of a direct current to the armatures 31, 31, 31,... Of the central stator arranged and fixed on the central stator 27, for example, this occurs in the intermediate rotor 20. Among the rotating magnetic fields, the position of the N pole of the rotating magnetic field generated inside the intermediate rotor 20 is detected or estimated, and the armature on the side of the central stator 27 located on the leading side from the N pole position of the rotating magnetic field is detected. The N pole of the intermediate rotor 20 is attracted by passing current in the direction in which the S pole for attracting the N pole of the rotating magnetic field generated inside the intermediate rotor 20 is generated, and the main body of the intermediate rotor 20 is outside. It rotates in the same direction as the rotor 17.
Further, when the N pole position of the rotating magnetic field is located at the same position as the energized armature of the central stator 27 or at the leading side, the same polarity repels the N pole of the intermediate rotor 20 by switching the direction of current flow. The intermediate rotor 20 main body further rotates in the same direction as the outer rotor 17 by exciting the N pole.
By repeating the above-described operation in detail, the intermediate rotor 20 continues to rotate outside the central stator 27, and the outer rotor 17 continuously rotates in the same direction as the intermediate rotor 20 outside the intermediate rotor 20. To do.
As a result, the rotational speed-torque characteristic obtained by the intermediate rotor 20 continuously rotating on the outer side of the central stator 27, and the outer rotor 17 on the outer side of the intermediate rotor 20 in the same direction as the intermediate rotor. The sum of the rotational speed-torque characteristics obtained by continuous rotation becomes the rotational speed-torque characteristics obtained by the intermediate / outer rotor abduction motor 1a.

Further, in the power supply method for changing the magnetic flux direction for each of the armatures 31, 31, 31,... Of the central stator disposed and fixed on the central stator 27, the rotating magnetic field speed is higher than the rotating magnetic field speed of the intermediate rotor 20. By supplying the alternating current generated, the intermediate rotor 20 body can be synchronously rotated in the same direction as the outer rotor 17 outside the central stator 27. As a result, the intermediate rotor 20 is fixed in the center. Rotational speed obtained by continuously rotating the outer side of the rotor 27 -torque characteristics, and rotational speed obtained by rotating the outer rotor 17 continuously on the outer side of the intermediate rotor 20 in the same direction as the intermediate rotor- The sum of the torque characteristics becomes the rotational speed-torque characteristics obtained by the intermediate / outer rotor abduction motor 1a.
According to the power supply method for changing the direction of the magnetic flux, the maximum phase angle between the central stator 27 and the intermediate rotor 20 and the intermediate rotor 20 and the outer rotation against the step-out phenomenon that occurs when the motor load becomes excessive. The sum of the maximum phase angle between the sub-elements 17 becomes the maximum phase angle in the motor, and since the phase angle until the step-out phenomenon is large, there is an advantage that the motor is difficult to stop.

Next, the structure and operation of the intermediate / outer rotor abduction motor 1b according to the invention described in claim 3 will be described.
In the intermediate / outside rotor abduction motor 1b according to the invention of claim 3, in addition to the configuration of the intermediate / outside rotor abduction motor 1 according to the invention of claim 1, a central stator and an intermediate An armature was selected and fixed for each rotor, and a cage structure was adopted for the outer rotor.

  Of the central stator, intermediate rotor, and outer rotor constituting the intermediate / outer rotor abduction motor 1b, the intermediate rotor and the central stator include the intermediate Since the same structure as that of the intermediate rotor and the central stator in the outer rotor outer rotation type motor 1a is adopted, the description regarding the structure is omitted.

The outer rotor 33 adopting a cage structure is based on the same operation as that of a conventional cage induction motor adopting a cage structure on the rotor side, and is formed into a cage shape by a rotating magnetic field generated in the intermediate rotor 34 in FIG. An electromagnetic force is generated in each metal conductor bar 35 of the outer rotor 33 constituting the structure in the same direction as the rotating magnetic field, and the outer rotor 33 rotates in the same direction as the rotating magnetic field of the intermediate rotor 34. Let
In the structure of the outer rotor 33 employing a conductor, as shown in FIG. 5, a metal conductor rod 35 made of copper or aluminum is provided in each concave portion 37 provided on the inner peripheral surface of the laminated core 36 inside the outer rotor 33. Were arranged in the same direction as the rotary shaft 38, and both sides were fixed with a short-circuit ring 39.
Further, in the inner short-circuit ring arranged on the back side of the outer rotor 33, the back side of the outer rotor 33 is used as the inner short-circuit ring for the current path by bringing the inner end of the metal conductor rod into contact with the back side of the outer rotor 33. An embodiment in which the inner short-circuit ring is omitted is also conceivable.
Furthermore, instead of the metal conductor rod 35 made of copper or aluminum, the use of a winding-type outer rotor in which a conductive wire is wound in a coil shape is also conceivable, and the winding wound in the coil shape is connected to each slip ring. Then power is supplied from the outside.
As described above, the description of the intermediate rotor and the central stator is omitted, but only the armature of the intermediate rotor is shown in FIG.

  Regarding the operation between the outer rotor 33 having a cage structure and the intermediate rotor 34, the rotating magnetic field generated in each armature 40, 40, 40,... An eddy current is generated in the metal conductor rod, and flows to the metal conductor rod 35 of the outer rotor 33 and the rotating magnetic field generated in each armature 40, 40, 40,... Of the intermediate rotor 34 by Fleming's left-hand rule. An electromagnetic force is generated on the outer rotor 33 side by the eddy current, and the outer rotor 33 continuously rotates in the same direction as the rotating magnetic field generated in the armatures 40, 40, 40,.

About the operation | movement which the intermediate rotor 34 rotates outside the center stator 41, it is with respect to the rotating magnetic field which generate | occur | produced in the armature of the intermediate rotor similarly to the operation | movement in the intermediate | middle / outside rotor abduction type motor 1a mentioned above. Select one of the drive control methods to switch the armature to be energized to the armature on the central stator side, switch the direction of current flowing to the armature, or change the magnetic flux direction of the armature. The rotor is rotated, and the outer rotor is guided and rotated in the same direction as the intermediate rotor outside the intermediate rotor.
By repeating the above-described operation, the intermediate rotor 34 continues to rotate outside the central stator 41, and further, the outer rotor 33 extends outside the intermediate rotor 34 in the same direction as the intermediate rotor 34. Rotate continuously.
As a result, the rotational speed-torque characteristic obtained by the intermediate rotor 34 continuously rotating outside the central stator 41 and the outer rotor 33 outside the intermediate rotor 34 in the same direction as the intermediate rotor. The sum of the rotational speed-torque characteristics obtained by continuous rotation becomes the rotational speed-torque characteristics obtained by the intermediate / outer rotor abduction motor 1a.

Next, the structure and operation of the intermediate / outer rotor abduction motor 1c according to the invention described in claim 4 will be described.
In the intermediate / outside rotor abduction motor 1c according to the invention of claim 4, in addition to the configuration of the intermediate / outside rotor abduction motor 1 according to the invention of claim 1, the center stator and the outside An arrangement was adopted in which an armature was selected and fixed for each rotor, and permanent magnets with different poles were arranged and fixed in the circumferential direction of the rotor core for the intermediate rotor.

In FIG. 6, reference numeral 42 denotes an outer rotor employing an armature, and each armature 45, 45, 45,... For the outer rotor, in which an armature winding 44 is wound around a laminated iron core 43, is a motor during power feeding. It is arranged and fixed at the inner position of the outer rotor body where magnetic flux is generated in the radial direction.
And each commutator 46, 46, 46, ... connected to each armature winding 44, 44, 44, ... in the armature for the outer rotor 42 is disposed and fixed to the outer rotor body, and The rotation shaft 47 is disposed and fixed at the center of the outer rotor 42.
The outer rotor 42 is rotatably supported by a bearing 49 for an outer rotor provided at the center of the intermediate rotor 48, and the outer side of the intermediate rotor 48 is rotated outside the intermediate / outer rotor. The motor 1c rotates on the rotation center axis A-A '.

Reference numeral 48 denotes an intermediate rotor disposed inside the outer rotor 42. Each of the N-pole permanent magnets 50a,..., And the S-pole permanent magnets 50b is attached to a mounting portion opened in the circumferential direction of the rotor of the intermediate rotor body. , ... are alternately arranged and fixed.
Further, a plus side brush C that contacts each commutator 46, 46, 46,... Arranged and fixed on the outer rotor 42 side, a plus side slip link 51a connected to the plus side brush C, and each commutator. The minus side brush D that contacts 46, 46, 46,... And the minus side slip link 51b connected to the minus side brush D rotate about the rotation center axis A-A 'of the intermediate / outside rotor abduction motor 1c. Are arranged and fixed in an insulated state on the intermediate rotor 48 main body.
The rotating shaft 52 is disposed and fixed at the center of the intermediate rotor 48, and the intermediate rotor 48 is rotatable about the bearing portion 54 for the intermediate rotor 48 provided at the center of the center stator 53. And the outer side of the central stator 53 rotates on the rotation center axis A-A 'of the intermediate / outer rotor abduction motor 1c.

53 is a central stator located inside the intermediate rotor 48, and each armature 57, 57, 57,... For the central stator, in which the armature winding 56 is wound around the laminated core 55, serves as a motor during power feeding. It is arranged and fixed on the base side 58 of the intermediate / outer rotor abduction motor 1c radially at a position where magnetic flux is generated in the radial direction.
Further, on the base side 58 of the intermediate / outside rotor abduction motor 1c, a plus side brush A is provided at a position in contact with the plus side slip link 51a disposed and fixed to the intermediate rotor 48, and the minus side brush A is provided. The minus-side brush B is disposed and fixed in an insulated state at a position in contact with the slip link 51b, and the intermediate rotor 48 rotates outside the central stator 53, and further rotates outward outside the intermediate rotor 48. The child 42 rotates in the same direction as the intermediate rotor 48.
The intermediate and outer rotor abduction motor 1c is constituted and assembled by the main parts described above.

  For the operation of the intermediate rotor 48 rotating outside the central stator 53, with respect to the N-pole permanent magnet 50a,... And the S-pole permanent magnet 50b,. The armatures 57, 57, 57,... Are selected from the switching of the armature to be energized, the switching of the direction of the current flowing through the armature, and each drive control method for changing the direction of the magnetic flux of the armature. Rotate the intermediate rotor 48.

  Further, with respect to the operation of rotating the outer rotor 42 outside the intermediate rotor 48, the rotation difference caused by the rotation of the intermediate rotor 48 with respect to the armatures 45, 45, 45,. The direction of the direct current flowing through each commutator 46, 46, 46,... Connected to each armature is switched. For example, the S pole permanent magnet arranged and fixed on the intermediate rotor 48 is shifted to the delay side. The armature 45 of the outer rotor located is excited to the N pole, the S pole of the intermediate rotor 48 is attracted, the outer rotor 42 is rotated in the same direction as the rotating direction of the intermediate rotor 48, and then The armature 45 of the outer rotor positioned on the advancing side is excited to the S pole to repel it from the S pole of the intermediate rotor 48, and further in the same direction as the rotation direction of the intermediate rotor 48 that rotates the outer rotor 42. Rotate and eventually center fixed 53 outer intermediate rotor 48 is rotated further, the intermediate rotor 48 outside the outer rotor 42, rotates continuously and the intermediate rotor 48 in the same direction.

  And the current flowing through the armatures 45, 45, 45,... Of the outer rotor 42 is intermediate from the plus side brush A in which the plus power source is arranged and fixed on the motor 1 c base side 58 and connected to the plus power source. Power is transmitted to the plus side brush C connected to the plus side slip link 51a via the plus side slip link 51a arranged and fixed on the rotor 48 and in contact with the plus side brush A, and the minus power source is connected to the motor. 1c From the minus side brush B arranged and fixed on the base side 58 and connected to the minus power source, the minus side slip link 51b arranged and fixed to the intermediate rotor 48 and in contact with the minus side brush B is opposed to the minus side slip. Power is transmitted to the minus side brush D connected to the link 51b.

  The present invention can be modified in various ways without departing from the spirit of the present invention in addition to the above-described embodiments, and the present invention naturally extends to the modified ones.

  FIG. 5 is an explanatory cross-sectional view in the direction of the rotation axis of the intermediate / outer rotor abduction motor 1 according to the first aspect of the present invention.   It is explanatory drawing sectional drawing of the motor rotating shaft direction which shows the Example which provided the bearing part 13 for the rotating shafts 7a of the outer side rotor 10a in the center part of the intermediate | middle rotor 6a.   FIG. 6 is an explanatory cross-sectional view in the motor rotation axis direction showing an embodiment in which a bearing portion 14 for the rotation shaft 7c of the outer rotor 10b is provided on a lid 15.   FIG. 6 is an explanatory cross-sectional view in the direction of a rotation axis of an intermediate / outside rotor abduction motor 1a according to the invention of claim 2;   It is explanatory sectional drawing of the rotating shaft direction of the intermediate | middle and outer side rotor abduction type motor 1b which concerns on invention of Claim 3.   FIG. 6 is an explanatory cross-sectional view in the direction of the rotation axis of an intermediate / outside rotor abduction motor 1c according to the invention of claim 4;

Explanation of symbols

1, 1a, 1b, 1c Intermediate / outside rotor abduction motor 1
2, 27, 41, 53 Central stator 3, 26, 52 Rotating shaft of intermediate rotor 4 Inner peripheral surface of intermediate rotor 5 Outer peripheral surface of central stator 6, 20, 34, 48 Intermediate rotor 7, 19, 38, 47 Rotating shaft of outer rotor 8 Inner circumferential surface of outer rotor 9 Outer circumferential surface of intermediate rotor 10, 17, 33, 42 Outer rotor 11, 28, 54 Bearing section 12 of rotating shaft for intermediate rotor 13, 14, 21, 49 Bearing portion of outer rotor rotating shaft 15 Cover 16, 32, 58 provided with bearing portion of outer rotor rotating shaft Base 18a, 18b of intermediate / outer rotor abduction type motor 50a, 50b Permanent magnet 22, 29, 36, 43, 55 Iron core 23, 30, 44, 56 Winding 24, 40 Armature of intermediate rotor 25 Armature mounting portion 31, 57 Armature of central stator 35 Metal conductor Rod 37 Recess 39 Short-circuit ring 45 Armature of outer rotor 46 Commutator 51a, 51b Slip link 59 Drive controller

Claims (4)

    A central stator, an intermediate rotor of a hollow cylindrical structure that has a rotation axis and an inner peripheral surface faces the outer peripheral surface of the central stator through a predetermined interval and is arranged outside the central stator; An inner rotor having an axis and an outer rotor having a hollow cylindrical structure disposed on the outer side of the intermediate rotor facing the outer peripheral surface of the intermediate rotor with a predetermined interval; An outer rotor is rotatably supported by an intermediate rotor provided on the central stator and a bearing portion for the outer rotor, and an armature, a permanent magnet, and a conductor are attached to the central stator, the intermediate rotor, and the outer rotor. By selecting any one of them, fixing them in combination, supplying DC or AC power to the armature, the intermediate rotor is rotated outside the central stator, and the outer rotor is further rotated outside the intermediate rotor. It can be rotated in the same direction as the intermediate rotor. Intermediate-outer rotor outer rotor type motor according to claim.     A central stator armature and an intermediate rotor brush are arranged and fixed on the central stator, and the intermediate rotor armature and the armature are connected to the hollow cylindrical intermediate rotor. The intermediate / outside rotation according to claim 1, wherein a slip ring that contacts the brush is arranged and fixed, and permanent magnets having different poles are arranged and fixed on the outer rotor in the circumferential direction of the rotor core. Child abduction motor.     A central stator armature and an intermediate rotor brush are arranged and fixed on the central stator, and the intermediate rotor armature and the armature are connected to the hollow cylindrical intermediate rotor. In addition, a cage ring structure in which a slip ring that comes into contact with the brush is disposed and fixed, a metal conductor bar is housed in the outer rotor in the direction of the rotation axis of the rotor core surface, and both sides of the metal conductor bar are fixed with a short-circuit ring. The intermediate / outer rotor abduction motor according to claim 1, wherein:     A positive side brush A and a negative side brush B that feed power to the armature for the central stator and the armature for the outer rotor are arranged and fixed on the central stator, respectively, and the circumferential direction of the rotor is arranged on the intermediate rotor of the hollow cylindrical structure. And a positive slip link connected to the positive brush C which is connected to the positive brush A and is in contact with the commutator of the outer rotor, and is connected to the negative brush B. Are connected to the negative brush D contacting the outer rotor commutator, and the outer rotor armature and the outer rotor armature are connected to the outer rotor and the outer rotor armature, respectively. 2. The intermediate / outer rotor abduction motor according to claim 1, wherein a commutator to be connected is arranged and fixed.

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