Motor rotor

Abstract

A motor rotor comprises a fixed part, a coil and a rotating part. The fixing part is provided with a space, a first surface and a second surface, the second surface surrounds the first surface, and the space is communicated between the first surface and the second surface. The coil is located in the space. The rotating part comprises a plurality of first rotating pieces and a plurality of second rotating pieces. The first rotating piece is provided with a first corresponding face, a first short edge and a first long edge, wherein the first short edge and the first long edge are opposite. The first corresponding face abuts against the first short edge and faces and aligns with the first surface. The second rotating part and the first rotating part are arranged in a staggered mode, the second rotating part is provided with a second corresponding face, a second short edge and a second long edge, and the second corresponding face is adjacent to the second short edge and faces and is aligned with the second surface. The motor rotor enables a user to simply and easily control the torsion and the rotating speed of the motor rotor.

Description

Technical Field

[0001] The invention relates to a motor rotor. Background Art

[0002] As people's living standards continue to improve, the demand for mechanical equipment in all walks of life is also increasing. Faced with a huge market, in order to enhance the competitiveness of their own brands, manufacturers are also committed to improving the design of mechanical equipment.

[0003] Undoubtedly, the motor is one of the main components in various mechanical devices. Therefore, how to effectively improve the functional performance of the motor is undoubtedly an important topic of great concern in the industry. Summary of the invention

[0004] One of the purposes of the present invention is to provide a motor rotor that allows a user to simply and easily control its torque and speed.

[0005] According to one embodiment of the present invention, a motor rotor includes a fixed portion, a coil and a rotating portion. The fixed portion has a space, a first annular surface and a second annular surface, the second annular surface surrounds the first annular surface and is separated from the first annular surface, and the space is connected between the first annular surface and the second annular surface. The coil is at least partially located in the above-mentioned space. The rotating portion is configured to rotate around an axis relative to the fixed portion. The rotating portion includes a plurality of first fan-shaped rotating members and a plurality of second fan-shaped rotating members. Each of the first fan-shaped rotating members has a first corresponding surface and a first short side and a first long side relative to each other, the first short side is closer to the axis than the first long side, the first corresponding surface is adjacent to the first short side, and the first corresponding surface faces and is at least partially aligned with the first annular surface. The second fan-shaped rotating member is staggered with the first fan-shaped rotating member around the axis, and each of the second fan-shaped rotating members has a second corresponding surface and a second short side and a second long side relative to each other, the second short side is closer to the axis than the second long side, the second corresponding surface is adjacent to the second short side, and the second corresponding surface faces and is at least partially aligned with the second annular surface.

[0006] In one or more embodiments of the present invention, the first fan-shaped rotating member and the second fan-shaped rotating member are separated from each other.

[0007] In one or more embodiments of the present invention, the first corresponding surface and the first annular surface are separated from each other, and the second corresponding surface and the second annular surface are separated from each other.

[0008] In one or more embodiments of the present invention, each of the first long sides has a first length, each of the second long sides has a second length, and the first length is the same as the second length.

[0009] In one or more embodiments of the present invention, the rotating part further comprises a non-magnetic element. The non-magnetic element connects the first sector-shaped rotating member and the second sector-shaped rotating member.

[0010] In one or more embodiments of the present invention, the above-mentioned fixing part includes an outer column tube, an inner column tube and a plate body. The outer column tube extends along the axis and has a first end and a second end opposite to each other, and the second annular surface is located at the first end. The inner column tube extends along the axis and has a third end and a fourth end opposite to each other, and the first annular surface is located at the third end. The inner column tube is located inside the outer column tube and defines the above-mentioned space between the inner column tube and the outer column tube. The plate body connects the second end and the fourth end.

[0011] In one or more embodiments of the present invention, the rotating part further comprises a first annular sheet. The first annular sheet is aligned with the first annular surface, and the first corresponding surface is connected to a side of the first annular sheet away from the first annular surface.

[0012] In one or more embodiments of the present invention, the first annular sheet has a third annular surface facing the first annular surface and separated from the first annular surface, and the area of ​​the third annular surface is the same as that of the first annular surface.

[0013] In one or more embodiments of the present invention, the rotating part further comprises a second annular sheet. The second annular sheet surrounds the first annular sheet and is aligned with the second annular surface, and the second corresponding surface is connected to a side of the second annular sheet away from the second annular surface.

[0014] In one or more embodiments of the present invention, the second annular sheet has a fourth annular surface facing the second annular surface and separated from the second annular surface, and the area of ​​the fourth annular surface is the same as that of the second annular surface.

[0015] The above embodiments of the present invention have at least the following advantages:

[0016] (1) Since the first corresponding surface of the first fan-shaped rotating member faces and is at least partially aligned with the first annular surface of the inner column tube, and the second corresponding surface of the second fan-shaped rotating member faces and is at least partially aligned with the second annular surface of the outer column tube, magnetic fluxes of opposite polarities can be respectively guided to the first fan-shaped rotating member and the second fan-shaped rotating member, so that the first fan-shaped rotating member and the second fan-shaped rotating member have opposite magnetic properties and interact with the stator surrounding the rotating part, thereby allowing the rotating part to rotate around the axis relative to the fixed part.

[0017] (2) Since the strength of the magnetic flux can be controlled by the current applied to the coil, when the rotating part rotates at a low speed relative to the fixed part, the user can increase the current flowing through the coil to increase the magnetic flux, that is, to increase the magnetism of the first fan-shaped rotating part and the second fan-shaped rotating part, thereby increasing the torque of the rotating part. Conversely, when the rotating part rotates at a high speed relative to the fixed part, the user can reduce the current flowing through the coil to weaken the magnetic flux, that is, to weaken the magnetism of the first fan-shaped rotating part and the second fan-shaped rotating part, thereby increasing the rotation speed of the rotating part. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The figure is a three-dimensional schematic diagram illustrating a motor rotor according to an embodiment of the present invention.

[0019] Figure 2 To draw the Figure 1 A front view of arrow A;

[0020] Figure 3 To draw the Figure 1 A cross-sectional view of line segment BB;

[0021] Figure 4 To draw the Figure 1 A cross-sectional view of line segment CC;

[0022] Figure 5 To draw the Figure 2 A cross-sectional view of line segment DD;

[0023] Figure 6 To draw the Figure 2 A cross-sectional view of line segment EE;

[0024] Figure 7 A front view of a rotating part according to another embodiment of the present invention is shown;

[0025] Figure 8 To draw the Figure 7 A cross-sectional view of line segment FF;

[0026] Fig. 9 To draw the Figure 7 Cross-sectional view of line segment GG.

[0027]

Explanation of symbols

[0028] 100: Motor rotor

[0029] 110:Fixed part

[0030] 111:Outer column tube

[0031] 111a: First end

[0032] 111b: Second end

[0033] 112:Inner column tube

[0034] 112a: The third end

[0035] 112b: The fourth end

[0036] 113:Plate body

[0037] 120: Coil

[0038] 130: Rotating part

[0039] 131: first fan-shaped rotating member

[0040] 131L: First long side

[0041] 131S: First short side

[0042] 132: Second fan-shaped rotating member

[0043] 132L: Second longest side

[0044] 132S: Second short side

[0045] 133: Non-magnetic components

[0046] 134: first annular sheet

[0047] 135: Second annular piece

[0048] A: Arrow

[0049] BB,CC,DD,EE,FF,GG: Line segment

[0050] A1: First annular surface

[0051] A2: Second annular surface

[0052] A3: Third annular surface

[0053] A4: Fourth annular surface

[0054] L1: First length

[0055] L2: Second length

[0056] R1: First corresponding surface

[0057] R2: Second corresponding surface

[0058] SP: Space

[0059] XL: Axis DETAILED DESCRIPTION

[0060] The following will disclose multiple embodiments of the present invention with the accompanying drawings. For the purpose of clear description, many practical details will be described together in the following description. However, it should be understood that these practical details should not be used to limit the present invention. That is, in some embodiments of the present invention, these practical details are not necessary. In addition, in order to simplify the drawings, some conventional structures and elements will be depicted in a simple schematic manner in the drawings, and the same reference numerals will be used to represent the same or similar elements in all drawings. And if it is possible in practice, the features of different embodiments can be applied interchangeably.

[0061] Unless otherwise defined, all words (including technical and scientific terms) used herein have their usual meanings, which are understood by those familiar with the field. Furthermore, the definitions of the above words in commonly used dictionaries should be interpreted in the context of this specification as consistent with the meanings of the relevant field of the present invention. Unless otherwise clearly defined, these words will not be interpreted as idealized or overly formal.

[0062] Please refer to Figure 1 . Figure 1 FIG. 1 is a three-dimensional schematic diagram of a motor rotor 100 according to an embodiment of the present invention. To make the figure concise and easy to understand, the non-magnetic element 133 is not shown. Figure 1 In this embodiment, if Figure 1 As shown, a motor rotor 100 includes a fixed portion 110 and a rotating portion 130 separated from each other. In practical applications, the motor rotor 100 is at least partially accommodated in a stator (not shown), and the rotating portion 130 is configured to interact with the stator to rotate relative to the fixed portion 110 around the axis XL.

[0063] Please refer to Figure 2 . Figure 2 To draw the Figure 1 In this embodiment, as shown in FIG. Figure 2 As shown, the rotating part 130 includes a plurality of first fan-shaped rotating members 131 and a plurality of second fan-shaped rotating members 132. Each of the first fan-shaped rotating members 131 has a first short side 131S and a first long side 131L opposite to each other, and the first short side 131S is closer to the axis XL than the first long side 131L. The second fan-shaped rotating members 132 and the first fan-shaped rotating members 131 are arranged alternately around the axis XL, and each of the second fan-shaped rotating members 132 has a second short side 132S and a second long side 132L opposite to each other, and the second short side 132S is closer to the axis XL than the second long side 132L.

[0064] Furthermore, if Figure 2As shown, the first long side 131L of each of the first fan-shaped rotating members 131 is arc-shaped and has a first length L1, and the second long side 132L of each of the second fan-shaped rotating members 132 is also arc-shaped and has a second length L2. In practical applications, the first length L1 of the first long side 131L is the same as the second length L2 of the second long side 132L.

[0065] It is worth noting that in this embodiment, if Figure 2 As shown, the first fan-shaped rotating member 131 and the second fan-shaped rotating member 132 of the rotating portion 130 are separated from each other. In other words, the first fan-shaped rotating member 131 and the second fan-shaped rotating member 132 are not in direct contact with each other.

[0066] Moreover, in this embodiment, the number of the first fan-shaped rotating members 131 is the same as the number of the second fan-shaped rotating members 132. For example, as shown in FIGS. 1-2, the number of the first fan-shaped rotating members 131 and the number of the second fan-shaped rotating members 132 are two respectively. In other embodiments, while keeping the second fan-shaped rotating members 132 and the first fan-shaped rotating members 131 staggered around the axis XL, the number of the first fan-shaped rotating members 131 and the number of the second fan-shaped rotating members 132 can be designed to be three or more respectively according to actual conditions.

[0067] Furthermore, in this embodiment, if Figure 2 As shown, the rotating portion 130 further includes a non-magnetic element 133. The non-magnetic element 133 connects the first fan-shaped rotating member 131 and the second fan-shaped rotating member 132 to fix the relative position of the first fan-shaped rotating member 131 and the second fan-shaped rotating member 132.

[0068] Please refer to Figure 3 . Figure 3 To draw the Figure 1 In this embodiment, as shown in FIG. Figure 3 As shown, each of the first sector-shaped rotating members 131 has a first corresponding surface R1 adjacent to the first short side 131S. In addition, each of the second sector-shaped rotating members 132 has a second corresponding surface R2 adjacent to the second short side 132S.

[0069] Please refer to Figure 4 . Figure 4 To draw the Figure 1 In this embodiment, as shown in FIG. Figure 4As shown, the fixing portion 110 has a space SP, a first annular surface A1 and a second annular surface A2, the second annular surface A2 surrounds the first annular surface A1 and is separated from the first annular surface A1, and the space SP is connected between the first annular surface A1 and the second annular surface A2. Furthermore, the motor rotor 100 includes a coil 120, and the coil 120 is located in the space SP.

[0070] Please refer to Figure 5 . Figure 5 To draw the Figure 2 Specifically, in this embodiment, as Figure 5 As shown, the fixing portion 110 includes an outer column tube 111, an inner column tube 112 and a plate 113. The outer column tube 111 extends along the axis XL and has a first end 111a and a second end 111b opposite to each other, and the second annular surface A2 is located at the first end 111a. The inner column tube 112 extends along the axis XL and has a third end 112a and a fourth end 112b opposite to each other, and the first annular surface A1 is located at the third end 112a. The inner column tube 112 is located inside the outer column tube 111 and defines the above-mentioned space SP between the inner column tube 112 and the outer column tube 111. The plate 113 connects the second end 111b and the fourth end 112b.

[0071] Furthermore, if Figure 5 As shown, the first corresponding surface R1 of the first sector-shaped rotating member 131 and the first annular surface A1 of the inner column tube 112 are separated from each other, and the first corresponding surface R1 faces and is at least partially aligned with the first annular surface A1.

[0072] Please refer to Figure 6 . Figure 6 To draw the Figure 2 In this embodiment, as shown in FIG. Figure 6 As shown, the second corresponding surface R2 of the second sector-shaped rotating member 132 is separated from the second annular surface A2 of the outer column tube 111 , and the second corresponding surface R2 faces and is at least partially aligned with the second annular surface A2 .

[0073] When the motor rotor 100 is in operation, the coil 120 is energized and generates magnetic flux, and the polarities of the magnetic flux on the outer column tube 111 and the inner column tube 112 are opposite. As described above, since the first corresponding surface R1 of the first sector-shaped rotating member 131 faces and is at least partially aligned with the first annular surface A1 (such as the inner column tube 112) of the inner column tube 112, the first corresponding surface R1 of the first sector-shaped rotating member 131 is oriented toward and is at least partially aligned with the first annular surface A1 (such as the inner column tube 112) of the inner column tube 112. Figure 5 As shown), the second corresponding surface R2 of the second fan-shaped rotating member 132 faces and is at least partially aligned with the second annular surface A2 of the outer column tube 111 (as shown Figure 6As shown in FIG. 1 , magnetic fluxes of opposite polarities can be respectively guided to the first sector-shaped rotating member 131 and the second sector-shaped rotating member 132, so that the first sector-shaped rotating member 131 and the second sector-shaped rotating member 132 have opposite magnetism and interact with the stator around the rotating portion 130, so that the rotating portion 130 rotates relative to the fixed portion 110 around the axis XL. In essence, the opposite polarities are N pole and S pole, respectively.

[0074] Furthermore, since the strength of the magnetic flux can be controlled by the current applied to the coil 120, when the rotating part 130 rotates at a low speed relative to the fixed part 110, the user can increase the current flowing through the coil 120 to increase the magnetic flux, that is, to increase the magnetism of the first fan-shaped rotating member 131 and the second fan-shaped rotating member 132, thereby increasing the torque of the rotating part 130. Conversely, when the rotating part 130 rotates at a high speed relative to the fixed part 110, the user can reduce the current flowing through the coil 120 to weaken the magnetic flux, that is, to weaken the magnetism of the first fan-shaped rotating member 131 and the second fan-shaped rotating member 132, thereby increasing the rotation speed of the rotating part 130.

[0075] In practical applications, to reduce the loss of magnetic eddy current, the fixed portion 110, the first fan-shaped rotating member 131 and the second fan-shaped rotating member 132 can be respectively formed by stacking multiple layers of thin sheets, and the thin sheets are bonded with insulating glue. For example, the thin sheets can be silicon steel sheets, but the present invention is not limited thereto.

[0076] Please refer to Figures 7-8 . Figure 7 FIG. 1 is a front view of a rotating part 130 according to another embodiment of the present invention. In order to make the figure concise and easy to understand, the non-magnetic element 133 is not shown. Figure 7 middle. Figure 8 To draw the Figure 7 To make the drawings clear and understandable, the fixing portion 110 and the coil 120 are also shown. Figure 8 In this embodiment, if Figures 7-8 As shown, the rotating portion 130 further includes a first annular piece 134. The first annular piece 134 is aligned with the first annular surface A1, and the first corresponding surface R1 of the first sector-shaped rotating member 131 is connected to a side of the first annular piece 134 away from the first annular surface A1.

[0077] Furthermore, the first annular sheet 134 has a third annular surface A3 which faces the first annular surface A1 of the inner column tube 112 and is separated from the first annular surface A1. Specifically, the area of ​​the third annular surface A3 is the same as that of the first annular surface A1.

[0078] Please refer to Figure 7 , 9 . Fig. 9 To draw the Figure 7 To make the drawings clear and understandable, the fixing portion 110 and the coil 120 are also shown. Fig. 9 In this embodiment, if Figure 7 , 9 As shown, the rotating part 130 further includes a second annular piece 135. The second annular piece 135 surrounds the first annular piece 134 and is aligned with the second annular surface A2. The second corresponding surface R2 of the second sector-shaped rotating member 132 is connected to a side of the second annular piece 135 away from the second annular surface A2.

[0079] Furthermore, the second annular sheet 135 has a fourth annular surface A4 which faces the second annular surface A2 of the outer column tube 111 and is spaced apart from the second annular surface A2. Specifically, the area of ​​the fourth annular surface A4 is the same as that of the second annular surface A2.

[0080] Furthermore, in practical applications, the third annular surface A3 of the first annular piece 134 and the fourth annular surface A4 of the second annular piece 135 are substantially coplanar, that is, the third annular surface A3 and the fourth annular surface A4 are located on the same plane.

[0081] In summary, the technical solutions disclosed in the above embodiments of the present invention have at least the following advantages:

[0082] (1) Since the first corresponding surface of the first fan-shaped rotating member faces and is at least partially aligned with the first annular surface of the inner column tube, and the second corresponding surface of the second fan-shaped rotating member faces and is at least partially aligned with the second annular surface of the outer column tube, magnetic fluxes of opposite polarities can be respectively guided to the first fan-shaped rotating member and the second fan-shaped rotating member, so that the first fan-shaped rotating member and the second fan-shaped rotating member have opposite magnetic properties and interact with the stator surrounding the rotating part, thereby allowing the rotating part to rotate around the axis relative to the fixed part.

[0083] (2) Since the strength of the magnetic flux can be controlled by the current applied to the coil, when the rotating part rotates at a low speed relative to the fixed part, the user can increase the current flowing through the coil to increase the magnetic flux, that is, to increase the magnetism of the first fan-shaped rotating part and the second fan-shaped rotating part, thereby increasing the torque of the rotating part. Conversely, when the rotating part rotates at a high speed relative to the fixed part, the user can reduce the current flowing through the coil to weaken the magnetic flux, that is, to weaken the magnetism of the first fan-shaped rotating part and the second fan-shaped rotating part, thereby increasing the rotation speed of the rotating part.

[0084] Although the present invention has been disclosed as above in the form of implementation modes, it is not intended to limit the present invention. Anyone skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be determined by the definition of the attached claims.

Claims

1. A motor rotor, characterized in that: Include: A fixing portion having a space, a first annular surface and a second annular surface, the second annular surface surrounds the first annular surface and is separated from the first annular surface, and the space is connected between the first annular surface and the second annular surface; a coil at least partially located in the space; and A rotating portion configured to rotate around an axis relative to the fixed portion, the rotating portion comprising: A plurality of first sector-shaped rotating members, each of the plurality of first sector-shaped rotating members having a first corresponding surface and a first short side and a first long side opposite to each other, the first short side being closer to the axis than the first long side, the first corresponding surface being adjacent to the first short side, and the first corresponding surface being oriented toward and at least partially aligned with the first annular surface; as well as A plurality of second fan-shaped rotating members are arranged alternately with the plurality of first fan-shaped rotating members around the axis, each of the plurality of second fan-shaped rotating members has a second corresponding surface and a second short side and a second long side opposite to each other, the second short side is closer to the axis than the second long side, the second corresponding surface is adjacent to the second short side, and the second corresponding surface faces and is at least partially aligned with the second annular surface.

2. The motor rotor according to claim 1, characterized in that: The plurality of first fan-shaped rotating members and the plurality of second fan-shaped rotating members are separated from each other.

3. The motor rotor according to claim 1, characterized in that: The first corresponding surface and the first annular surface are separated from each other, and the second corresponding surface and the second annular surface are separated from each other.

4. The motor rotor according to claim 1, characterized in that: Each of the first long sides has a first length, each of the second long sides has a second length, and the first length is the same as the second length.

5. The motor rotor according to claim 1, characterized in that: The rotating part also includes: A non-magnetic element connects the plurality of first fan-shaped rotating members and the plurality of second fan-shaped rotating members.

6. The motor rotor according to claim 1, characterized in that: The fixing part comprises: an outer column tube extending along the axis and having a first end and a second end opposite to each other, the second annular surface being located at the first end; an inner column tube extending along the axis and having a third end and a fourth end opposite to each other, the first annular surface being located at the third end, the inner column tube being located inside the outer column tube and defining the space between the outer column tube; and A plate body connects the second end and the fourth end.

7. The motor rotor according to claim 1, characterized in that: The rotating part also includes: A first annular sheet is aligned with the first annular surface, and the first corresponding surface is connected to a side of the first annular sheet away from the first annular surface.

8. The motor rotor according to claim 7, characterized in that: The first annular sheet has a third annular surface, the third annular surface faces the first annular surface and is separated from the first annular surface, and the area of ​​the third annular surface is the same as that of the first annular surface.

9. The motor rotor according to claim 7, characterized in that: The rotating part also includes: A second annular sheet surrounds the first annular sheet and is aligned with the second annular surface, wherein the second corresponding surface is connected to a side of the second annular sheet away from the second annular surface.

10. The motor rotor according to claim 9, characterized in that: The second annular sheet has a fourth annular surface, the fourth annular surface faces the second annular surface and is separated from the second annular surface, and the area of ​​the fourth annular surface is the same as that of the second annular surface.

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