Splicing type rotor device

Abstract

The utility model relates to a spliced rotor device, which comprises a middle end part rotor structure, the middle end part rotor structure comprises a plurality of spliced iron core sheets, each iron core sheet comprises a plurality of through holes, a plurality of middle end connecting parts and a plurality of magnetic leakage prevention structures, and a plurality of magnetic components respectively penetrate through the plurality of through holes. And the magnetic components are exposed through the plurality of magnetic leakage prevention structures, so that the effects of improving the induced voltage of the spliced rotor device, reducing the magnetic leakage of the rotor and increasing the back electromotive force are achieved. In addition, the spliced rotor device is formed by splicing the middle end rotor structure through the plurality of middle end connecting parts, so that the processing complexity of the end rotor structure can be reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to rotor device field, especially a spliced rotor device. BACKGROUND

[0002] Referring to FIG. 6A , FIG. 6A is the perspective view of the prior art rotor device connected with the motor. The prior art rotor device 4 comprises a rotor structure 41 and a rotor shaft 42. The rotor shaft 42 is connected with the output shaft of the motor T and is arranged in the rotor structure 41. The rotor structure 41 and the rotor shaft 42 are connected through the concave-convex structures 411 and 421 on the inner diameter of the rotor structure 41 and the outer diameter of the rotor shaft 42. However, the concave-convex structure 411 of the rotor structure 41 in the prior art rotor device 4 is located in the inner diameter, which causes difficulty in processing.

[0003] Referring to FIG. 6B and FIG. 6C , FIG. 6B is the magnetic field distribution diagram of the prior art rotor device, FIG. 6C is the magnetic field distribution diagram of the prior art rotor device, FIG. 6B is the partial enlarged view of the magnetic field at the L4 position. As shown in the magnetic field distribution diagram and the partial enlarged view, the rotor structure 41 of the prior art rotor device 4 is a whole structure, the density of the magnetic field distribution is high, and thus more magnetic leakage problems are prone to occur.

[0004] Therefore, how to provide a spliced rotor device to solve the above problems has become a research topic in urgent need. SUMMARY

[0005] The utility model relates to a spliced rotor device, which comprises a middle-end rotor structure. The middle-end rotor structure comprises a plurality of middle-end iron core pieces. Each middle-end iron core piece has a plurality of middle-end through holes, a plurality of middle-end connecting portions, and a plurality of anti-magnetic leakage slots. The anti-magnetic leakage slots are connected with the plurality of middle-end through holes. The plurality of anti-magnetic leakage slots are located on the outer edges of the plurality of middle-end iron core pieces. The plurality of middle-end connecting portions are arranged on the side surfaces of each middle-end iron core piece. Each middle-end iron core piece is connected with each other through the plurality of middle-end connecting portions, and a middle-end rotor shaft hole is formed. A plurality of magnetic components are arranged in the plurality of middle-end through holes, and one side of the plurality of magnetic components is exposed through the plurality of anti-magnetic leakage slots.

[0006] As described above, the spliced rotor device can expose the magnetic components through the plurality of anti-magnetic leakage structures, so as to improve the induced voltage of the spliced rotor device, reduce the magnetic leakage of the rotor, and increase the back electromotive force. In addition, the iron core piece structure can reduce the complexity of processing the end rotor structure. BRIEF DESCRIPTION OF DRAWINGS

[0007] FIGS. 1A-1Dis a perspective view, an exploded view, a first end rotor structure exploded view and a middle end rotor structure exploded view of the spliced rotor device of the present application;

[0008] FIG. 2A and FIG. 2B is a front view of the middle end rotor structure and the first end rotor structure;

[0009] FIG. 2C is an enlarged view of the anti-leakage magnetic slot;

[0010] FIG. 3A is a back electromotive force comparison view of the spliced rotor device of the present application and a conventional rotor device;

[0011] FIG. 3B is an induced voltage comparison view of the spliced rotor device of the present application and a conventional rotor device;

[0012] FIG. 4A is a magnetic field distribution view of the spliced rotor device of the present application;

[0013] FIG. 4B is a FIG. 4A magnetic field distribution enlarged view at L1 position;

[0014] FIG. 5A is a magnetic flux density distribution view of the first end rotor structure and the second end rotor structure;

[0015] FIG. 5B is a FIG. 5A magnetic flux density partial enlarged view at L2 position;

[0016] FIG. 5C is a magnetic flux density distribution view of the middle end rotor structure;

[0017] FIG. 5D is a FIG. 5C magnetic flux density partial enlarged view at L3 position;

[0018] FIG. 6A is a perspective view of a conventional rotor device;

[0019] FIG. 6B is a magnetic field distribution view of the conventional rotor device;

[0020] FIG. 6C is a FIG. 6B magnetic field distribution enlarged view at L4 position. DETAILED DESCRIPTION

[0021] Please refer to FIGS. 1A-1DIt is a perspective view, an exploded view, a first end rotor structure 1 exploded view and a middle end rotor structure 3 exploded view of the spliced rotor device 1 of the utility model, wherein the first end rotor structure 1 and the second end rotor structure 2 are the same structure, therefore, only the first end rotor structure 1 is taken as an example FIG. 1C The first end rotor structure 1 and the second end rotor structure 2 are shown, the spliced rotor device D comprises the first end rotor structure 1, the second end rotor structure 2 and the middle end rotor structure 3, the first end rotor structure 1 comprises a plurality of first core pieces 11, each first core piece 11 has a plurality of first perforations 111 and a plurality of first connecting portions 112, the plurality of first connecting portions 112 are arranged on the side surface of each first core piece 11, so that each first core piece 11 is connected to each other through the plurality of first connecting portions 111, and a first end rotor shaft hole 113 is formed, the second end rotor structure 2 comprises a plurality of second core pieces 21, each second core piece 21 has a plurality of second perforations 211 and a plurality of second connecting portions 212, the plurality of second connecting portions 212 are arranged on the side surface of each second core piece 21, so that each second core piece 21 is connected to each other through the plurality of second connecting portions 212, and a second end rotor shaft hole 213 is formed, the middle end rotor structure 3 comprises a plurality of middle end core pieces 31, which are arranged between the first end rotor structure 1 and the second end rotor structure 2, each middle end core piece 31 has a plurality of middle end perforations 311, a plurality of middle end connecting portions 312 and a plurality of anti-leakage magnetic slots 314, the anti-leakage magnetic slots 314 are communicated with the plurality of middle end perforations 311, the plurality of anti-leakage magnetic slots 314 are respectively located on the outer edge of the plurality of middle end core pieces 31, the plurality of middle end connecting portions 312 are arranged on the side surface of each middle end core piece 31, so that each middle end core piece 31 is connected to each other through the plurality of middle end connecting portions 312, and a middle end rotor shaft hole 313 is formed, in addition, it should be noted that in the utility model, the first and the second are not used to limit the arrangement order of the structure, but are defined according to the actual setting position, for example, the first end rotor structure 1 can be regarded as a front end rotor structure arranged close to the motor output shaft, and the second end rotor structure 2 can be regarded as a rear end rotor structure arranged away from the motor output shaft.

[0022] The rotor shaft center S is arranged through the first end rotor shaft hole 113, the second end rotor shaft hole 213 and the middle end rotor shaft hole 313 to connect the first end rotor structure 1, the second end rotor structure 2 and the middle end rotor structure 3, and the outer diameter of the rotor shaft center S has a corresponding clamping portion in the inner diameter of the first end rotor shaft hole 113, the second end rotor shaft hole 213 and the middle end rotor shaft hole 313 to clamp and connect the rotor shaft center S, the first end rotor shaft hole 113, the second end rotor shaft hole 213 and the middle end rotor shaft hole 313.

[0023] In the embodiment of the utility model, first end rotor structure 1 contains three first iron core pieces 11, second end rotor structure 2 contains three second iron core pieces 21, middle end rotor structure 3 contains three middle end iron core pieces 31, three first iron core pieces 11, three second iron core pieces 21 and three middle end iron core pieces 31 are fan-shaped and proportionally sized, multiple first connecting portions 112, multiple second connecting portions 212 and multiple middle end connecting portions 312 are respectively arranged on both sides of the fan shape, and mutually engage three first iron core pieces 11, three second iron core pieces 21 and three middle end iron core pieces 31 to form first end rotor shaft hole 113, second end rotor shaft hole 213 and middle end rotor shaft hole 313, in the embodiment of the utility model, first connecting portion 112, second connecting portion 212 and middle end connecting portion 312 are concave-convex engagement structures, in addition, rotor shaft S has engaging portion S1, which is mutually engaged with engaging portion 114 of first end rotor structure 1, engaging portion 214 of second end rotor structure 2 and engaging portion 315 of middle end rotor structure 3.

[0024] Please refer to FIGS. 2A-2C , FIG. 2A It is the front view of middle end rotor structure 3, FIG. 2B It is the front view of first end rotor structure 1 and second end rotor structure 2, FIG. 2C It is the enlarged view of leakage magnetic prevention slot 314, in the embodiment of the utility model, leakage magnetic prevention slot 314 contains a slot with narrow upper part and wide lower part, such as dovetail groove or convex slot, in addition, at least one leakage magnetic prevention slot 314 is arranged adjacent to middle end connecting portion 312, that is, at least one leakage magnetic prevention slot 314 is arranged at the mutual connecting position of middle end connecting portion 312, that is, at least one leakage magnetic prevention slot 314 is formed by splicing multiple middle end iron core pieces 31, in the embodiment of the utility model, at least one leakage magnetic prevention slot 314 is formed by splicing two middle end iron core pieces 31 and arranged on the outer diameter of middle end iron core piece 31.

[0025] Please refer to FIG. 2A and FIG. 2BIn an embodiment of this utility model, a plurality of magnetic components M are respectively disposed in a plurality of first through holes 111, a plurality of second through holes 211, and a plurality of intermediate through holes 311. Since a magnetic leakage prevention slot 314 connects two intermediate through holes 311, one side of two magnetic components M can be exposed through the magnetic leakage prevention slot 314. Furthermore, the two magnetic components M exposed through the magnetic leakage prevention slot 314 are magnetic components M with opposite magnetic properties, that is, connected to the magnetic leakage prevention slot 314 and disposed in the intermediate through holes 311 on both sides of the magnetic leakage prevention slot 314. The magnetic component M in 1 is a magnetic component with opposite magnetic properties, that is, a magnetic component M with opposite polarity is set in the middle through hole 311 on both sides of the anti-leakage magnetic slot 314. Through the setting of the anti-leakage magnetic slot 314, the middle rotor structure 3 can achieve the effect of no magnetic leakage. Compared with the first end rotor structure 1 and the second end rotor structure 2 without the anti-leakage magnetic slot 314, the end rotor structure has a higher density, thus generating more magnetic leakage. Furthermore, through the design of the anti-leakage magnetic slot 314, the induced voltage can also be further improved.

[0026] Please see FIG. 3A and FIG. 3B , FIG. 3A This is a comparison diagram of the back electromotive force between the spliced ​​rotor device of this utility model and a conventional rotor device. FIG. 3B This is a comparison diagram of the induced voltage between the spliced ​​rotor device of this utility model and a conventional rotor device. FIG. 3A It can be seen that the back electromotive force (EMF) generated by the spliced ​​rotor device of this invention has a higher period in both the positive and negative half-cycles than that generated by conventional rotor devices. FIG. 3B It can be seen that the induced voltage generated by the spliced ​​rotor device of this utility model is also higher than that generated by the conventional rotor device. In comparison, the induced voltage can be increased by about 4 to 7 volts.

[0027] Please see FIG. 4A and FIG. 4B ,picture FIG. 4A This is a magnetic field distribution diagram of the spliced ​​rotor device of this utility model. FIG. 4B This is for FIG. 4A A magnified view of the magnetic field lines at location L1. The distribution of the magnetic field lines clearly shows that, compared to... FIG. 6B , FIG. 6C As can be clearly seen from the magnetic field distribution diagram of the conventional rotor device, conventional rotor device 4 has a higher magnetic field density, resulting in more magnetic leakage compared to... FIG. 4A and FIG. 4B The middle rotor structure 3, which is equipped with a magnetic leakage prevention slot 314, shows that the distribution of its magnetic lines of force is different from the overall rotor structure 41 of the conventional rotor device 4 due to its structural design. Therefore, it can achieve the effect of no magnetic leakage.

[0028] Referring to FIGS. 5A-5D , FIG. 5A is a magnetic flux density distribution diagram for the first end rotor structure 1 and the second end rotor structure 2, FIG. 5B is a magnetic flux density distribution diagram for FIG. 5A is a partial enlarged view of the magnetic flux density at the L2 position, FIG. 5C is a magnetic flux density distribution diagram for the middle end rotor structure 3, FIG. 5D is a magnetic flux density distribution diagram for FIG. 5C is a partial enlarged view of the magnetic flux density at the L3 position, as shown in FIG. 5A and FIG. 5B , the first end rotor structure 1 and the second end rotor structure 2 generate more magnetic flux leakage after software analysis because the structural density of the first end rotor structure 1 and the second end rotor structure 2 is higher. FIG. 5C and FIG. 5D , the middle end rotor structure 3 does not generate magnetic flux leakage because of the anti-leakage slot 314.

[0029] In summary, the spliced rotor device of the present application can improve the induced voltage of the spliced rotor device, reduce rotor magnetic flux leakage, and increase the back electromotive force through the plurality of anti-leakage structures exposed magnetic components. In addition, the complexity of processing the end rotor structure can be reduced through the spliced core piece structure.

Claims

1. A spliced rotor device, characterized by, Comprising: a middle end rotor structure comprising a plurality of middle end core pieces, each of the middle end core pieces having a plurality of middle end through holes, a plurality of middle end connecting portions, and a plurality of flux leakage prevention slots, the flux leakage prevention slots being in communication with the plurality of middle end through holes and being respectively located on the outer edges of the plurality of middle end core pieces, the plurality of middle end connecting portions being disposed on the side surfaces of each of the middle end core pieces so that each of the middle end core pieces is connected to each other through the plurality of middle end connecting portions and forms a middle end rotor shaft hole; a plurality of magnetic components respectively penetrating the plurality of middle end through holes and exposing one side of the plurality of magnetic components through the plurality of flux leakage prevention slots.

2. The spliced rotor device of claim 1, wherein, The flux leakage prevention slots comprise a dovetail slot.

3. The spliced rotor device of claim 1, wherein, Further comprising a first end rotor structure comprising a plurality of first core pieces, each of the first core pieces having a plurality of first through holes and a plurality of first connecting portions, the plurality of first connecting portions being disposed on the side surfaces of each of the first core pieces so that each of the first core pieces is connected to each other through the plurality of first connecting portions and forms a first end rotor shaft hole.

4. The spliced rotor device of claim 3, wherein, Further comprising a second end rotor structure comprising a plurality of second core pieces, each of the second core pieces having a plurality of second through holes and a plurality of second connecting portions, the plurality of second connecting portions being disposed on the side surfaces of each of the second core pieces so that each of the second core pieces is connected to each other through the plurality of second connecting portions and forms a second end rotor shaft hole; The middle end rotor structure is disposed between the first end rotor structure and the second end rotor structure; A plurality of magnetic components further respectively penetrating the plurality of first through holes and the plurality of second through holes; A rotor shaft penetrating the first end rotor shaft hole, the second end rotor shaft hole, and the middle end rotor shaft hole to connect the first end rotor structure, the second end rotor structure, and the middle end rotor structure.

5. The spliced rotor device of claim 4, wherein, The first connecting portions, the second connecting portions, and the middle end connecting portions are a concave-convex engagement structure.

6. The spliced rotor device of claim 5, wherein, The first end rotor structure comprises three first core pieces, the second end rotor structure comprises three second core pieces, and the middle end rotor structure comprises three middle end core pieces.

7. The spliced rotor device of claim 6, wherein, The three first core pieces, the three second core pieces, and the three middle end core pieces are a fan-shaped equal proportion size.

8. The spliced rotor device of claim 7, wherein, The plurality of first connecting portions, the plurality of second connecting portions, and the plurality of middle end connecting portions are respectively disposed on the two side edges of the fan-shaped.

9. The spliced rotor device of claim 1, wherein, The flux leakage prevention slots comprise a slot with a narrow upper part and a wide lower part.

10. The spliced rotor device of claim 1, wherein, The magnetic components of different polarities are disposed in the middle end through holes in communication with the two sides of the flux leakage prevention slots.

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