Permanent magnet type motor

Abstract

The utility model discloses a permanent magnet type motor. Comprising a stator, a coil arranged on the stator, a rotating shaft penetrating through the stator, a first rotating disc arranged above the stator, a plurality of first magnetic parts arranged on the peripheral area of the first rotating disc, a second rotating disc arranged below the stator and a plurality of second magnetic parts arranged on the peripheral area of the second rotating disc. The rotating shaft is respectively connected with the first turntable and the second turntable, so that the rotating shaft, the first turntable and the second turntable jointly rotate relative to the stator; the first magnetic parts and the second magnetic parts are in one-to-one correspondence, and the lower ends of the corresponding first magnetic parts and the upper ends of the corresponding second magnetic parts are mutually exclusive. According to the permanent magnet type motor, the first rotating disc, the plurality of first magnetic parts, the second rotating disc and the plurality of second magnetic parts form the rotor, so that the stator and the rotor are located in different planes, the permanent magnet type motor occupies a small area, and miniaturization of the permanent magnet type motor in the area direction is facilitated.

Description

Technical Field

[0001] This utility model relates to a permanent magnet motor. Background Technology

[0002] Traditional permanent magnet motors typically place the magnets on the outer periphery of the rotor core. In this case, the stator and rotor are located on the same plane, which makes the traditional permanent magnet motor occupy too large an area, which is not conducive to its miniaturization in the area direction. Utility Model Content

[0003] Therefore, it is necessary to provide a permanent magnet motor that can solve the above problems.

[0004] A permanent magnet motor includes a stator, a coil disposed in the peripheral region of the stator, a rotating shaft passing through the central region of the stator, a first turntable disposed above the stator, a plurality of first magnetic parts disposed in the peripheral region of the first turntable, a second turntable disposed below the stator, and a plurality of second magnetic parts disposed in the peripheral region of the second turntable.

[0005] The coil is used to form an electromagnetic part after being energized, and the upper and lower ends of the formed electromagnetic part are both magnetic poles;

[0006] The rotating shaft is connected to the first turntable and the second turntable respectively, so that the rotating shaft, the first turntable and the second turntable rotate together relative to the stator;

[0007] The number of the first magnetic part and the number of the second magnetic part are both even. The lower end of the first magnetic part is a magnetic pole, and the magnetic poles of the lower ends of two adjacent first magnetic parts are opposite. The upper end of the second magnetic part is a magnetic pole, and the magnetic poles of the upper ends of two adjacent second magnetic parts are opposite.

[0008] The first magnetic part and the second magnetic part correspond one-to-one, and the lower end of the corresponding first magnetic part attracts the upper end of the corresponding second magnetic part.

[0009] In one embodiment, the plurality of first magnetic portions are a plurality of spaced-apart magnets embedded in the peripheral region of the first turntable;

[0010] And / or, the plurality of second magnetic parts are a plurality of spaced magnets embedded in the peripheral region of the second turntable.

[0011] In one embodiment, the first magnetic part and the first turntable are an integral structure, and the first magnetic part is formed by magnetizing the outer region of the first turntable.

[0012] And / or, the second magnetic part and the second turntable are an integral structure, and the second magnetic part is formed by magnetizing the outer region of the second turntable.

[0013] In one embodiment, the lower end of the corresponding first magnetic part is directly opposite the upper end of the corresponding second magnetic part;

[0014] The first turntable can rotate relative to the stator until the upper end of the coil is directly opposite the lower end of the first magnetic part.

[0015] In one embodiment, both the first magnetic part and the second magnetic part are columnar, and the axes of the first magnetic part, the second magnetic part, the coil, and the rotating shaft are all parallel.

[0016] In one embodiment, there are multiple coils, which are spaced apart and arranged in a circle.

[0017] In one embodiment, the first turntable, the stator, and the second turntable are stacked sequentially and spaced apart.

[0018] In one embodiment, the permanent magnet motor further includes a control unit electrically connected to the coil, the control unit being used to control the change in the current direction of the coil such that when the coil is located between two adjacent first magnetic parts, the upper end of the coil is mutually repelled by the lower end of one of the first magnetic parts and the upper end of the coil is mutually attracted by the lower end of the other first magnetic part.

[0019] In one embodiment, the permanent magnet motor further includes a circuit board, a power supply electrically connected to the coil and the control unit respectively, and a charging interface disposed on the circuit board, wherein the control unit and the power supply are both disposed on the circuit board.

[0020] In one embodiment, the permanent magnet motor further includes a speed-changing structure connected to the rotating shaft.

[0021] In this permanent magnet motor, the first turntable and a plurality of first magnetic parts are disposed above the stator, and the second turntable and a plurality of second magnetic parts are disposed below the stator. The first turntable, the plurality of first magnetic parts, the second turntable, and the plurality of second magnetic parts constitute the rotor, thereby making the stator and the rotor located on different planes. Compared with the traditional permanent magnet motor in which the stator and the rotor are located on the same plane, the permanent magnet motor of this invention occupies a smaller area, which is beneficial for its miniaturization in the area direction. Attached Figure Description

[0022] Figure 1This is a three-dimensional structural diagram of a permanent magnet motor in one direction, according to one embodiment.

[0023] Figure 2 For example Figure 1 A three-dimensional structural diagram of a permanent magnet motor from another direction is shown.

[0024] Figure 3 For example Figure 1 The diagram shows an exploded view of part of the permanent magnet motor. Detailed Implementation

[0025] To make the objectives, technical solutions and advantages of this utility model clearer, the embodiments of this utility model will be further described below with reference to the accompanying drawings.

[0026] like Figure 1 , Figure 2 and Figure 3 The permanent magnet motor shown in one embodiment includes a stator 10, a coil 20 disposed in the peripheral region of the stator 10, a rotating shaft 30 passing through the central region of the stator 10, a first turntable 40 disposed above the stator 10, a plurality of first magnetic parts 50 disposed in the peripheral region of the first turntable 40, a second turntable 60 disposed below the stator 10, and a plurality of second magnetic parts 70 disposed in the peripheral region of the second turntable 60.

[0027] The coil 20 is used to form an electromagnetic part after being energized, and the upper and lower ends of the formed electromagnetic part are both magnetic poles.

[0028] The rotating shaft 30 is connected to the first turntable 40 and the second turntable 60 respectively, so that the rotating shaft 30, the first turntable 40 and the second turntable 60 rotate together relative to the stator 10.

[0029] The number of first magnetic parts 50 and second magnetic parts 70 is even. The lower end of the first magnetic part 50 is a magnetic pole, and the magnetic poles of the lower ends of two adjacent first magnetic parts 50 are opposite. The upper end of the second magnetic part 70 is a magnetic pole, and the magnetic poles of the upper ends of two adjacent second magnetic parts 70 are opposite.

[0030] The first magnetic part 50 and the second magnetic part 70 correspond one-to-one, and the lower end of the corresponding first magnetic part 50 and the upper end of the corresponding second magnetic part 70 attract each other.

[0031] For example, the lower end of the corresponding first magnetic part 50 is the S pole, and the upper end of the corresponding second magnetic part 70 is the N pole.

[0032] In this permanent magnet motor, the first turntable 40 and the first magnetic part 50 are disposed above the stator 10, and the second turntable 60 and a plurality of second magnetic parts 70 are disposed below the stator 10. The first turntable 40, the plurality of first magnetic parts 50, the second turntable 60 and the plurality of second magnetic parts 70 constitute the rotor, thereby making the stator 10 and the rotor located on different planes. Compared with the traditional permanent magnet motor in which the stator and rotor are located on the same plane, the permanent magnet motor of this invention occupies a smaller area, which is beneficial for its miniaturization in the area direction.

[0033] Furthermore, the first turntable 40 is positioned above the stator 10, and the second turntable 60 is positioned below the stator 10, thus forming a sandwich-like structure. This allows the rotor, composed of the first turntable 40, multiple first magnetic parts 50, the second turntable 60, and multiple second magnetic parts 70, to rotate more stably relative to the stator 10.

[0034] In actual operation, after the coil 20 is energized, the upper end of the coil 20 repels the lower end of an adjacent first magnetic part 50 and attracts the lower end of another adjacent first magnetic part 50. The lower end of the coil 20 also repels and attracts the two adjacent second magnetic parts 70, thereby driving the rotor composed of the first turntable 40, multiple first magnetic parts 50, second turntable 60 and multiple second magnetic parts 70 to rotate relative to the stator 10.

[0035] Referring to the accompanying drawings, in this embodiment, the plurality of first magnetic parts 50 are a plurality of spaced magnets embedded in the peripheral region of the first turntable 40, and the plurality of second magnetic parts 70 are a plurality of spaced magnets embedded in the peripheral region of the second turntable 60.

[0036] In another embodiment, a plurality of first magnetic parts 50 and a first turntable 40 are integrally formed, and the plurality of first magnetic parts 50 are formed by magnetizing the outer region of the first turntable 40. A plurality of second magnetic parts 70 and a second turntable 60 are integrally formed, and the plurality of second magnetic parts 70 are formed by magnetizing the outer region of the second turntable 60.

[0037] In other embodiments, the following two schemes can also be adopted: 1) The plurality of first magnetic parts 50 are a plurality of spaced magnets embedded in the peripheral area of ​​the first turntable 40, the plurality of second magnetic parts 70 and the second turntable 60 are an integral structure, and the plurality of second magnetic parts 70 are formed after the peripheral area of ​​the second turntable 60 is magnetized; 2) The plurality of first magnetic parts 50 and the first turntable 40 are an integral structure, the plurality of first magnetic parts 50 are formed after the peripheral area of ​​the first turntable 40 is magnetized, and the plurality of second magnetic parts 70 are a plurality of spaced magnets embedded in the peripheral area of ​​the second turntable 60.

[0038] Referring to the accompanying drawings, in this embodiment, there are four first magnetic parts 50 and four second magnetic parts 70. In other embodiments, the number of first magnetic parts 50 and two magnetic parts 70 may be six, eight, or other numbers.

[0039] Preferably, referring to the accompanying drawings, in this embodiment, the lower end of the corresponding first magnetic part 50 is directly opposite the upper end of the corresponding second magnetic part 70.

[0040] This makes the driving force of the first magnetic part 50 and the second magnetic part 70 on the coil 20 stronger and more stable.

[0041] Specifically, in this embodiment, the first turntable 40 can rotate relative to the stator 10 until the upper end of the coil 20 is directly opposite the lower end of the first magnetic part 50.

[0042] Preferably, in conjunction with the accompanying drawings, in this embodiment, both the first magnetic part 50 and the second magnetic part 70 are columnar, and the axis of the first magnetic part 50, the axis of the second magnetic part 70, the axis of the coil 20 and the rotating shaft 30 are all parallel.

[0043] More preferably, in this embodiment, both the first magnetic part 50 and the second magnetic part 70 are cylindrical magnetic parts.

[0044] Specifically, in this embodiment, both the first magnetic part 50 and the second magnetic part 70 are cylindrical magnets.

[0045] More preferably, in this embodiment, a plurality of first magnetic parts 50 are arranged in a circle, and a plurality of second magnetic parts 70 are arranged in a circle.

[0046] Preferably, in this embodiment, there are multiple coils 20, which are spaced apart and arranged in a circle.

[0047] Referring to the accompanying drawings, in this embodiment, there are 3 coils 20. In other embodiments, there may be 1, 2, 4 or more coils 20.

[0048] Preferably, referring to the accompanying drawings, in this embodiment, the first turntable 40, the stator 10, and the second turntable 60 are stacked sequentially and spaced apart.

[0049] Specifically, in this embodiment, both the first turntable 40 and the second turntable 60 are disc-shaped.

[0050] Preferably, in this embodiment, the permanent magnet motor further includes a control unit 80 electrically connected to the coil 20. The control unit 80 is used to control the change in the current direction of the coil 20, such that when the coil 20 is located between two adjacent first magnetic parts 50, the upper end of the coil 20 is mutually repelled by the lower end of one first magnetic part 50 and mutually attracted by the lower end of the other first magnetic part 50.

[0051] When the rotor rotates relative to the stator 10 until the coil 20 moves beyond the other first magnetic part 50, the control unit 80 controls the current direction of the coil 20 to change, so that the upper end of the coil 20 and the lower end of the other first magnetic part 50 repel each other, thereby continuing to drive the rotor to rotate relative to the stator 10.

[0052] Preferably, in conjunction with the accompanying drawings, in this embodiment, the permanent magnet motor further includes a circuit board 90, a power supply 100 electrically connected to the coil 20 and the control unit 80 respectively, and a charging interface 110 disposed on the circuit board 90. The control unit 80 and the power supply 100 are both disposed on the circuit board 90.

[0053] Specifically, in this embodiment, the circuit board 90 and the stator 10 are an integral structure, and the circuit board 90 and the stator 10 form an L-shaped structure, with the control unit 80, power supply 100 and other structures located in the accommodating space of the L-shaped structure.

[0054] Referring to the accompanying drawings, in this embodiment, the permanent magnet motor also includes a speed-changing structure 120 connected to the rotating shaft 30.

[0055] The specific structure of the transmission mechanism 120 can be set according to actual needs.

[0056] In the description of the embodiments of the present invention, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of the present invention. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0057] In the description of the embodiments of the present invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of the present invention based on the specific circumstances.

[0058] In embodiments of the present invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0059] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0060] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A permanent magnet motor, characterized in that, It includes a stator, a coil disposed in the peripheral region of the stator, a rotating shaft passing through the central region of the stator, a first turntable disposed above the stator, a plurality of first magnetic parts disposed in the peripheral region of the first turntable, a second turntable disposed below the stator, and a plurality of second magnetic parts disposed in the peripheral region of the second turntable. The coil is used to form an electromagnetic part after being energized, and the upper and lower ends of the formed electromagnetic part are both magnetic poles; The rotating shaft is connected to the first turntable and the second turntable respectively, so that the rotating shaft, the first turntable and the second turntable rotate together relative to the stator; The number of the first magnetic part and the number of the second magnetic part are both even. The lower end of the first magnetic part is a magnetic pole, and the magnetic poles of the lower ends of two adjacent first magnetic parts are opposite. The upper end of the second magnetic part is a magnetic pole, and the magnetic poles of the upper ends of two adjacent second magnetic parts are opposite. The first magnetic part and the second magnetic part correspond one-to-one, and the lower end of the corresponding first magnetic part and the upper end of the corresponding second magnetic part attract each other.

2. The permanent magnet motor according to claim 1, characterized in that, The plurality of first magnetic parts are multiple magnets spaced apart from each other and embedded in the peripheral area of ​​the first turntable; And / or, the plurality of second magnetic parts are a plurality of spaced magnets embedded in the peripheral region of the second turntable.

3. The permanent magnet motor according to claim 1, characterized in that, The first magnetic parts and the first turntable are integrated into one structure, and the first magnetic parts are formed by magnetizing the outer area of ​​the first turntable; And / or, the plurality of second magnetic parts and the second turntable are an integral structure, and the plurality of second magnetic parts are formed by magnetizing the outer region of the second turntable.

4. The permanent magnet motor according to any one of claims 1 to 3, characterized in that, The lower end of the first magnetic part is directly opposite the upper end of the second magnetic part. The first turntable can rotate relative to the stator until the upper end of the coil is directly opposite the lower end of the first magnetic part.

5. The permanent magnet motor according to claim 4, characterized in that, Both the first magnetic part and the second magnetic part are columnar, and the axis of the first magnetic part, the axis of the second magnetic part, the axis of the coil, and the rotating shaft are all parallel.

6. The permanent magnet motor according to claim 5, characterized in that, There are multiple coils, which are spaced apart and arranged in a circle.

7. The permanent magnet motor according to claim 6, characterized in that, The first turntable, the stator, and the second turntable are stacked sequentially and spaced apart.

8. The permanent magnet motor according to claim 7, characterized in that, The permanent magnet motor also includes a control unit electrically connected to the coil. The control unit is used to control the change of the current direction of the coil, such that when the coil is located between two adjacent first magnetic parts, the upper end of the coil is mutually repelled by the lower end of one of the first magnetic parts and the upper end of the coil is mutually attracted by the lower end of the other first magnetic part.

9. The permanent magnet motor according to claim 8, characterized in that, The permanent magnet motor also includes a circuit board, a power supply electrically connected to the coil and the control unit respectively, and a charging interface disposed on the circuit board. The control unit and the power supply are both disposed on the circuit board.

10. The permanent magnet motor according to claim 7, characterized in that, The permanent magnet motor also includes a speed-changing structure connected to the rotating shaft.

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