JP2004187406A - Outer rotor type permanent magnet motor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an outer rotor type permanent magnetic motor capable of attaining smooth operation without energy loss. <P>SOLUTION: In this permanent magnetic motor, three N pole magnets and three S pole magnets are disposed at an outer rotor at intervals in a 120° phase difference, and made to face six pairs of poles which are formed by combining respective four poles of an inner stator, single N, S or a neutral pole is formed at each of the poles, and polarity changes of these are controlled by a CPU. When each of the magnets of the outer rotor moves a distance of one pole, the polarity of the mating four poles is changed in advance. Each of the magnets of the outer rotor covers the four poles, and the polarity of the four poles is converted by the position of the outer rotor and changes in angle. Therefore, balance can be obtained in an unbalance condition, and a certain balance condition can be maintained even when the outer rotor is rotated at any angle, thus maintaining highly efficient power output and high torque angle maintaining operation regardless of the position of the outer rotor. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a structure design of a kind of outer rotor type permanent magnet motor, and more particularly, to a structure form formed by adopting an idea of combining equilibrium with imbalance, which has a high rotation speed, a large torque, and saves energy resources. The present invention relates to a structure of a high-efficiency all-balanced power motor that can be saved.
[0002]
[Prior art]
Many traditional outer-rotor permanent magnet motors have a single-phase or three-phase 3: 2 type as the basis for their structural design, and thus intentionally form an unbalanced state and rotate the rotor through an unbalanced magnetic field. To achieve power output. Generally, in an outer rotor type permanent magnet motor, a cylindrical rotor of a permanent magnet is arranged with a space around an outer periphery of stator teeth of a stator on which a stator coil is wound, and a rotation shaft is provided at the center of the rotor. Passed through the center hole of the stator, the rotor can rotate concentrically with respect to the stator.
[0003]
When a known outer rotor type permanent magnet motor having such a structure is assembled and actually used, there are the following disadvantages.
[0004]
Upon energizing the stator, the resulting magnetic field is arranged in a 3: 2 fashion between the permanent magnetic fields present in the permanent magnets of the rotor, thereby creating an unbalanced interaction of mutual attraction and rejection, and this structure is deliberate. This is the main factor that makes this unbalanced motor run smoothly. However, imbalances can cause wear, for example, loss of torque and energy. The characteristics of current motors are such that when the torque is large, the rotation speed is low, and when the rotation speed is high, the torque is low, forming an inversely proportional state. It is very difficult to increase both the torque and the rotation speed. Most importantly, motors generally suffer from power loss created by cogging torque.
[0005]
[Problems to be solved by the invention]
The present invention subtly removes the cogging torque phenomenon as well as converts it to assisting force. Therefore, the present invention provides a structure having a large torque, a high rotation speed, and low wear. However, in order to reduce the wear, it is necessary to equilibrate, but if an attempt is made to achieve the equilibrium, rotation becomes impossible. If equilibrium is stable, if unbalanced, it is a moving physical phenomenon.If you need the power and need the equilibrium, you need to find the balance during unbalanced, Is larger than that of the inner stator, a relatively large torque can be obtained. Thus, the present invention employs an outer rotor design.
[0006]
The present invention has been studied and improved on the structure of a power motor in view of the drawback that the loss and energy loss existing in a known power motor greatly reduce the output torque and efficiency of the motor, and developed a kind of all-balanced power motor. Provide and effectively solve the above difficulties.
[0007]
The main object of the present invention is to provide a kind of outer rotor type permanent magnet motor, which adopts the same number of N-pole magnets and S-pole magnets in the outer rotor, and adopts a continuous spacing type with a phase difference of 120 degrees. Adopt each magnet of the outer rotor to the magnetic pole which can be N, S or 0 magnetic pole by itself of the inner stator, and control the CPU as the main circuit structure, thereby forming the unbalanced structure design during equilibrium. It is an outer rotor type permanent magnet motor which achieves the purpose of operation, achieves energy saving and high efficiency operation with large torque output, and has advantages of easy mass production.
[0008]
[Means for Solving the Problems]
The invention according to claim 1 is an outer rotor type permanent magnet motor,
The inner stator includes a plurality of N magnetic poles and S magnetic poles having the same number of forms, and each magnetic pole independently forms an N or S main magnetic pole form independently, or forms a 0 magnetic form, that is, a magnetic form having a different neutrality. Said inner stator,
An outer rotor, comprising a plurality of N-pole magnet sets and S-pole magnet sets of the same number form, wherein the N-pole magnet sets and the S-pole magnet sets are continuously spaced from each other with a phase difference of 120 degrees, and The outer rotor, wherein four magnetic poles correspond to the magnet,
It has a circuit structure, a bridge circuit in which each single set coil is combined with a bridge switch, a positioning Hall IC, a CPU and a DC power supply are connected to each other, operated under the control of the CPU, and operates with polarity distribution, a positioning system, and speed control. System, the above circuit structure to obtain functions such as rotation speed synchronization and practical functions of synchronization detection and speed control,
And an outer rotor type permanent magnet motor.
According to a second aspect of the present invention, in the outer rotor type permanent magnet motor according to the first aspect, the plurality of magnetic poles of the inner stator are six sets, each set being four, and a total of 24 magnetic poles, or An outer rotor type permanent magnet motor characterized by being proportionally increased or decreased according to the size of the motor.
According to a third aspect of the present invention, in the outer rotor type permanent magnet motor according to the first aspect, a plurality of magnets of the outer rotor are composed of a set of three N-pole magnets and three S-pole magnets. An outer rotor type permanent magnet motor characterized in that another two sets are provided.
According to a fourth aspect of the present invention, in the outer rotor type permanent magnet motor according to the first aspect, the four magnetic poles of each set of the inner stator to which each one magnet of the outer rotor corresponds correspond to two magnets different in magnetism from the magnets. An outer rotor type permanent magnet motor is characterized by being composed of a magnetic pole, one neutral magnetic pole, and one magnetic pole having the same magnetism as the magnet.
According to a fifth aspect of the present invention, in the outer rotor type permanent magnet motor according to the first aspect, the CPU changes the magnetism of the four corresponding magnetic poles before the magnet of the outer rotor moves by one magnetic pole distance, and The outer rotor type permanent magnet motor is characterized in that the alternation is maintained continuously, thereby maintaining the combination with the magnetism of the outer rotor to generate a continuous operation function.
[0009]
BEST MODE FOR CARRYING OUT THE INVENTION
The outer rotor type permanent magnet motor of the present invention is an all-balanced power motor, and as shown in FIG. 1, an inner stator 1, an outer rotor 2, and a circuit structure which are basic units constituting the outer rotor type permanent magnet motor. 3 and none of these components are the focus of the present invention, so a detailed description will be omitted, and only the features of the present invention will be described below.
[0010]
The inner stator 1 includes a plurality of N and S magnetic poles 10 of the same number (in this embodiment, only six magnetic poles are provided, each of which is composed of four magnetic poles, for a total of 24 magnetic poles). Magnetic poles), the N and S sets of magnetic poles 10 are of synchronous exchange type, and each one of the magnetic poles 10 is either independently or independently of N or S main magnetic pole form, and 0 ( Different magnetic poles such as (empty) poles can be formed and correspond to the plurality of magnets 20 of the outer rotor 2.
[0011]
The outer rotor 2 includes a plurality of magnets 20 of the same number, and in this embodiment, three N-pole magnets (N1, N2, N3) and three S-pole magnets (S1, S2, S3), for a total of six magnets. A plurality of magnets 20 each having an N pole and an S pole are provided at a continuous interval so as to be separated from each other by 120 degrees, and each magnet 20 (N1 to N3, S1 to The range covered by S3) is the four magnetic poles 10 of each of the six magnetic poles 10 described above. The four magnetic poles 10 are two magnetic poles 10 having different magnetism from the magnet 20, and A magnetic pole 10 having a magnetic property (empty) and a magnetic pole 10 having the same magnetic property as the magnet 20 (such as two types of N, 0, S, S or S, 0, N, N), and The interval continuously changes alternately, and the magnetic pole change of the magnet 20 of the outer rotor 2 is combined, Function of continued operation is achieved.
[0012]
For the circuit structure 3, refer to the block diagram of FIG. 2 and the circuit diagram of FIG. As can be seen from the block diagram, a bridge circuit 32 in which a single set coil (each magnetic pole) 31 is combined with a bridge switch 30 is used to display the principle of magnetic change of each set of magnetic poles 10 described above. The Hall IC 33 detects the position of the magnet 20 of the outer rotor 2, and when the operation of the outer rotor 2 is started or stopped, the position of the specified magnetic pole 10 of the inner stator 1 is exactly set. The bridge switch 30, the positioning Hall IC 33, and the like are separately connected to the CPU 34, and further connected to a DC power supply. By this connection and the operation of the CPU 34, the polarity distribution, the positioning system, the speed control system, the rotation speed synchronization, and the like are performed. As well as the functions, practical functions such as synchronization detection and speed control are obtained.
[0013]
In the structure of the outer rotor type permanent magnet motor described above, the motor instantaneously generates a reaction and starts operation after the introduction of the direct current for practical application. Please refer to the driving operation display diagrams of FIGS. 3 and 4. This indicates the initial operation of the outer rotor 2. The following description is made by taking the N1 magnet in the N pole magnet 20 as an example.
[0014]
The N1 magnet 20 controls the attraction of the two S magnetic poles 10 in front of the four magnetic poles 10 covered by the N1 magnet 20 and the most terminal S magnetic pole 10 in the preceding set of four magnetic poles 10. 4 to produce a clockwise operating condition as seen in FIG. 4 and combined with the repulsive force (i.e., thrust) provided by the extreme N-magnetic pole 10 in this set of poles 10. , Its operation is promoted. This prevents the equilibrium state of the attractive force and the thrust force constituted by the same number of magnetic poles 10, and a so-called anti-pulling phenomenon (that is, the two N magnetic poles 10 behind the pair of magnetic poles 10 become S3 behind the corresponding N1 magnet 20). In order to prevent the magnet 20 from being attracted, in particular, the resistivity magnetic pole 10 located in the middle rear of the entire magnetic pole 10 is designed to have zero magnetic (empty) magnetic pole so as not to affect the operation. Reduce power consumption. In this way, an unbalanced state of the magnetic poles is formed, causing the N1 magnet 20 to obtain a forward attraction force and a backward thrust force, and the unbalanced state achieves a continuous and smooth running effect.
[0015]
As a result, when the N1 magnet 20 reaches the position where the S1 magnet 20 was originally located, the four S, 0, N, and N magnetic poles 10 originally corresponding to the S1 magnet 20 act as the polarity distribution control function of the CPU 34. Then, the magnetic pole changes further to the N, 0, S, S magnetic pole form (when the S3 magnet 30 gradually reaches the original N1 position, the corresponding magnetic pole 10 becomes the S, 0, N, N magnetic pole form). ), So that the N1 magnet 20 is continuously maintained in a complete operating power combination of attraction, thrust, and resistance. Similarly, as can be inferred from this, all the N-pole and S-pole magnets 20 of the outer rotor 2 acquire the functions of high rotational speed, high efficiency and large torque by such unbalanced power combination. .
[0016]
Although difficult to understand from the above description, the equilibrium appeal points pursued by the present invention are as follows. That is, in the outer rotor 2, each combination of three N-pole magnets 20 and three S-pole magnets, which are installed at intervals of 120 degrees, and six sets of the inner stator 1 are included. In a combination of a total of 24 magnetic poles 10 composed of four magnetic poles 10, each magnetic pole 10 can be a single N, S or 0 magnetic pole, and the polarity change combination form is controlled by the CPU 34, When each magnet 20 of the outer rotor 2 is operated to move the distance of each one magnetic pole 10, the corresponding set of four magnetic poles 10 changes polarity first, and thus is forever attracting force, no acting force. And a complete power combination of thrust is achieved, thereby achieving a stable high efficiency power output effect, thus resulting in a structural design having imbalance during equilibrium.
[0017]
It should be noted that when starting the operation of the outer rotor 2, when the magnet 20 separates from the plurality of magnetic poles 10 which originally corresponded thereto, a so-called cogging torque phenomenon may occur and the efficiency may be deteriorated. In the plurality of magnetic poles 10 of the inner stator 1 corresponding to each one of the magnets 2, there is one magnetic pole 10 of zero magnetic (empty), so that the relation during rotation is zero. From 10, the polarity is converted to the polarity of the N magnetic pole or the S magnetic pole (exclusion magnetic pole), and the magnet 20 is pushed away from the attraction of the magnetic pole to completely overcome the cogging torque phenomenon.
[0018]
【The invention's effect】
In summary, the outer rotor type permanent magnet motor of the present invention has a complete structural design with imbalance during equilibrium, and enhances the substantial functions of the motor such as rotation speed and torque under the principle of not losing power. , With patent requirements. The embodiments described above do not limit the scope of the present invention, and any modification or alteration of details that can be made based on the present invention shall fall within the scope of the present invention.
[Brief description of the drawings]
FIG. 1 is a sectional view of a motor structure according to the present invention.
FIG. 2 is a circuit structure diagram of the present invention.
FIG. 3 is a local circuit diagram of the present invention.
FIG. 4 is an operation display diagram of the embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Inner stator 10 Magnetic pole 2 Outer rotor 20 Magnet 3 Circuit structure 30 Bridge switch 31 Single set coil 32 Bridge circuit 33 Positioning hole IC 34 CPU

Claims (5)

In outer rotor type permanent magnet motor,
The inner stator includes a plurality of N magnetic poles and S magnetic poles having the same number of forms, and each magnetic pole independently forms an N or S main magnetic pole form independently, or forms a 0 magnetic form, that is, a magnetic form having a different neutrality. Said inner stator,
An outer rotor, comprising a plurality of N-pole magnet sets and S-pole magnet sets of the same number form, wherein the N-pole magnet sets and the S-pole magnet sets are continuously spaced from each other with a phase difference of 120 degrees, and The outer rotor, wherein four magnetic poles correspond to the magnet,
It has a circuit structure, a bridge circuit in which each single set coil is combined with a bridge switch, a positioning Hall IC, a CPU and a DC power supply are connected to each other, operated under the control of the CPU, and operates with polarity distribution, a positioning system, and speed control. System, the above circuit structure to obtain functions such as rotation speed synchronization and practical functions of synchronization detection and speed control,
An outer rotor type permanent magnet motor characterized by comprising: 2. The outer rotor type permanent magnet motor according to claim 1, wherein the plurality of magnetic poles of the inner stator are six sets, each set being four, and a total of 24 magnetic poles, or proportionally increased or decreased according to the size of the motor. An outer rotor type permanent magnet motor characterized by being performed. The outer rotor type permanent magnet motor according to claim 1, wherein the plurality of magnets of the outer rotor are one set composed of three N-pole magnets and another set composed of three S-pole magnets. An outer rotor type permanent magnet motor, wherein two sets are provided. 2. The outer rotor type permanent magnet motor according to claim 1, wherein the four magnetic poles of each set of the inner stator to which each one magnet of the outer rotor corresponds correspond to two magnetic poles having magnetism different from the magnetism and one neutral pole. An outer-rotor permanent magnet motor, comprising a magnetic pole and one magnetic pole having the same magnetism as the magnet. 2. The outer rotor type permanent magnet motor according to claim 1, wherein the CPU changes the magnetism of the four corresponding magnetic poles in advance before the outer rotor magnet moves by one magnetic pole distance, and maintains the alternating change. An outer rotor type permanent magnet motor characterized by maintaining the combination with the magnetism of the outer rotor and generating a continuous operation function.

Images