Combined rotor device

Abstract

A combined rotor arrangement is provided. [Solution] The combined rotor device D includes a center end rotor configuration 3 including a plurality of center end core pieces 31 having a plurality of center end through holes, a plurality of center end connecting parts, and a plurality of magnetic members M that are respectively inserted through the plurality of center end through holes, and one side of the plurality of magnetic members is exposed to the outside through the plurality of magnetic flux leakage prevention grooves. This makes it possible to improve the induced voltage in the combined rotor device, prevent magnetic flux leakage from the rotor, increase the back electromotive force, and achieve other functions. In addition, the combined rotor device formed by combining the center end rotor configurations with the plurality of center end connecting parts makes it possible to reduce the complexity of processing each end rotor configuration.

Description

[Technical field]

[0001] The present invention relates to a rotor arrangement, and more particularly to a combined rotor arrangement. [Background technology]

[0002] Please refer to Fig. 6A. Fig. 6A is a perspective view of a conventional rotor device connected to a motor. The conventional rotor device 4 includes a rotor structure 41 and a rotor shaft core 42. The rotor shaft core 42 is connected to the output shaft of the motor T and is inserted through the rotor structure 41 so that the inner circumference of the rotor structure 41 and the outer circumference of the rotor shaft core 42 are connected by engaging concave-convex structures 411, 421. However, since the concave-convex structure 411 of the rotor structure 41 in the conventional rotor device 4 is located on the inner circumference of the rotor structure 41, it is difficult to process it.

[0003] Please refer to Figures 6B and 6C. Figure 6B is a distribution map of magnetic field lines of a conventional rotor device, and Figure 6C is a partial enlarged view of the L4 portion in Figure 6B. According to the distribution map and the partial enlarged view of magnetic field lines, in the conventional rotor device 4, the rotor structure 41 is configured as a single unit, and therefore the distribution density of magnetic field lines is high, making it easy for problems with magnetic flux leakage to occur.

[0004] In view of the above problems, the current problem is how to provide a combined rotor device that can improve the above problems. Summary of the Invention [Means for solving the problem]

[0005] The combined rotor device of the present invention includes a central end rotor configuration including a plurality of central end core pieces having a plurality of central end through holes, a plurality of central end connecting portions and a plurality of magnetic flux leakage prevention grooves, the magnetic flux leakage prevention grooves communicating with the plurality of central end through holes and respectively located on the outer edges of the plurality of central end core pieces, and the plurality of central end connecting portions being installed on the side surfaces of each of the central end core pieces so that each of the central end core pieces is connected to each other via the plurality of central end connecting portions to form a central end rotor shaft hole, and a plurality of magnetic members inserted into each of the plurality of central end through holes, one side of the plurality of magnetic members being exposed to the outside through the plurality of magnetic flux leakage prevention grooves.

[0006] According to this, in the combined rotor device of the present invention, by exposing the magnetic members to the outside through a plurality of magnetic flux leakage prevention grooves, it is possible to improve the induced voltage in the combined rotor device, prevent magnetic flux leakage from the rotor, increase the back electromotive force, etc. Furthermore, the structure of the combined core pieces can reduce the complexity of the processing of the rotor configuration at each end. [Brief description of the drawings]

[0007] [Figure 1A] 1 is a perspective view of a combined rotor device according to the present invention; [Figure 1B] FIG. 2 is an exploded view of the combined rotor device of the present invention. [Figure 1C] 2 is an exploded view of a first end rotor configuration of the combined rotor device of the present invention; FIG. [Figure 1D] FIG. 2 is an exploded view of the center end rotor configuration of the combined rotor device of the present invention; [Figure 2A] FIG. 13 is a front view of the center end rotor configuration. [Figure 2B] FIG. 13 is a front view of a first end rotor arrangement. [Figure 2C] FIG. 4 is an enlarged view of a magnetic flux leakage prevention groove. [Figure 3A] FIG. 4 is a comparison diagram of the back electromotive force between the combined rotor device of the present invention and a conventional rotor device. [Figure 3B]FIG. 4 is a comparison diagram of induced voltages between the combined rotor device of the present invention and a conventional rotor device. [Figure 4A] FIG. 2 is a distribution diagram of magnetic lines of force of the combined rotor device of the present invention. [Figure 4B] FIG. 4B is a partially enlarged view of the magnetic field line distribution at the L1 location in FIG. 4A. [Figure 5A] FIG. 11 is a distribution diagram of magnetic flux density in a first end rotor configuration and a second end rotor configuration. [Figure 5B] FIG. 5B is a partially enlarged view of the magnetic flux density at a location L2 in FIG. 5A. [Figure 5C] FIG. 13 is a distribution diagram of magnetic flux density in a center end rotor configuration. [Figure 5D] FIG. 5D is a partially enlarged view of the magnetic flux density at a location L3 in FIG. 5C. [Figure 6A] FIG. 1 is a perspective view of a conventional rotor device. [Figure 6B] FIG. 11 is a distribution diagram of magnetic field lines in a conventional rotor device. [Figure 6C] FIG. 6C is a partially enlarged view of the magnetic field line distribution at location L4 in FIG. 6B. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0008] Please refer to Figures 1A to 1D. These figures are respectively a perspective view, an exploded view, an exploded view of the first end rotor configuration 1, and an exploded view of the center end rotor configuration 3 of the combined rotor device D of the present invention. Among them, the first end rotor configuration 1 and the second end rotor configuration 2 are the same configuration, so only Figure 1C shows the first end rotor configuration 1 and the second end rotor configuration 2. The combined rotor device D includes the first end rotor configuration 1, the second end rotor configuration 2, and the center end rotor configuration 3. The first end rotor configuration 1 includes a plurality of first core pieces 11 having a plurality of first through holes 111 and a plurality of first connecting parts 112, and the plurality of first connecting parts 112 are installed on the side of each first core piece 11 so that each first core piece 11 is connected to each other via the plurality of first connecting parts 112 to form a first end rotor shaft hole 113. The second end rotor configuration 2 includes a plurality of second core pieces 21 having a plurality of second through holes 211 and a plurality of second connecting parts 212, and the plurality of second connecting parts 212 are provided on the side of each second core piece 21 such that the second core pieces 21 are connected to each other via the plurality of second connecting parts 212 to form a second end rotor shaft hole 213. Furthermore, the center end rotor configuration 3 provided between the first end rotor configuration 1 and the second end rotor configuration 2 includes a plurality of center end core pieces 31 having a plurality of center end through holes 311, a plurality of center end connecting parts 312, and a plurality of magnetic flux leakage prevention grooves 314. In addition, the magnetic flux leakage prevention grooves 314 communicate with the multiple central end through holes 311 and are located on the outer edges of the multiple central end core pieces 31, and the multiple central end connecting parts 312 are installed on the side of each central end core piece 31 so that the central end core pieces 31 are connected to each other via the multiple central end connecting parts 312 to form the central end rotor shaft hole 313. It should be noted that in this invention, the terms "first" and "second" are defined by the actual installation positions, not by the order of arrangement of the members. For example, the first end rotor configuration 1 may be regarded as a front end rotor configuration installed close to the output shaft of the motor, and the second end rotor configuration 2 may be regarded as a rear end rotor configuration installed away from the output shaft of the motor.

[0009] The rotor shaft core S penetrates the first end rotor shaft hole 113, the second end rotor shaft hole 213, and the central end rotor shaft hole 313 so as to connect the first end rotor configuration 1, the second end rotor configuration 2, and the central end rotor configuration 3. The outer periphery of the rotor shaft core S and the inner peripheries of the first end rotor shaft hole 113, the second end rotor shaft hole 213, and the central end rotor shaft hole 313 have corresponding engagement portions for connection so as to engage and connect the rotor shaft core S to the first end rotor shaft hole 113, the second end rotor shaft hole 213, and the central end rotor shaft hole 313.

[0010] In the embodiment of the present invention, the first end rotor configuration 1 includes three first core pieces 11, the second end rotor configuration 2 includes three second core pieces 21, and the center end rotor configuration 3 includes three center end core pieces 31. The three first core pieces 11, the three second core pieces 21, and the three center end core pieces 31 are all fan-shaped and have the same proportional size. The multiple first connecting parts 112, the multiple second connecting parts 212, and the multiple center end connecting parts 312 are respectively provided on both sides of the fan shape, and the three first core pieces 11, the three second core pieces 21, and the three center end core pieces 31 are respectively engaged to form a first end rotor shaft hole 113 surrounded by the three first core pieces 11, a second end rotor shaft hole 213 surrounded by the three second core pieces 21, and a center end rotor shaft hole 313 surrounded by the three center end core pieces 31. In the embodiment of the present invention, the first connecting portion 112, the second connecting portion 212, and the central end connecting portion 312 all have a concave-convex engagement structure. Also, the rotor shaft center S has an engagement portion S1 which engages with and connects to the engagement portion 114 of the first end rotor configuration 1, the engagement portion 214 of the second end rotor configuration 2, and the engagement portion 315 of the central end rotor configuration 3, respectively.

[0011] Please refer to Figures 2A to 2C. Figure 2A is a front view of the central end rotor configuration 3, Figure 2B is a front view of the first end rotor configuration 1 and the second end rotor configuration 2, and Figure 2C is an enlarged view of the magnetic flux leakage prevention groove 314. In the embodiment of the present invention, the magnetic flux leakage prevention groove 314 includes a groove narrow at the top and wide at the bottom, such as a dovetail groove or a convex groove. At least one magnetic flux leakage prevention groove 314 is installed adjacent to the central end connecting portion 312. That is, at least one magnetic flux leakage prevention groove 314 is installed at the mutual connection point of the central end connecting portion 312. That is, at least one magnetic flux leakage prevention groove 314 is formed by combining multiple central end core pieces 31. In the embodiment of the present invention, at least one magnetic flux leakage prevention groove 314 is formed by combining two central end core pieces 31 and is installed on the outer periphery of the central end core piece 31.

[0012] 2A and 2B, in the embodiment of the present invention, a plurality of magnetic members M are respectively installed through a plurality of first through holes 111, a plurality of second through holes 211, and a plurality of central end through holes 311, and one magnetic flux leakage prevention groove 314 is connected to two central end through holes 311, so that one side of the two magnetic members M can be exposed to the outside through one magnetic flux leakage prevention groove 314. In addition, the two magnetic members M exposed to the outside through the magnetic flux leakage prevention groove 314 have opposite magnetic poles, that is, the magnetic members M connected to the magnetic flux leakage prevention groove 314 and installed in the two central end through holes 311 on both sides thereof have opposite magnetic poles. By installing the magnetic flux leakage prevention groove 314, the central end rotor structure 3 can achieve the effect of preventing magnetic flux leakage. In contrast, in the first end rotor configuration 1 and the second end rotor configuration 2, which are not provided with the magnetic flux leakage prevention grooves 314, the density of the end rotor structure is high, so more magnetic flux leakage occurs. Furthermore, by providing the magnetic flux leakage prevention grooves 314, the induced voltage can be further improved.

[0013] Please refer to Figures 3A and 3B. Figure 3A is a comparison diagram of the back emf between the combined rotor device of the present invention and a conventional rotor device, and Figure 3B is a comparison diagram of the induced voltage between the combined rotor device of the present invention and a conventional rotor device. According to Figure 3A, the back emf generated in the combined rotor device of the present invention is higher than that generated in the conventional rotor device in the positive half cycle and the negative half cycle. According to Figure 3B, the induced voltage generated in the combined rotor device of the present invention is also higher than that generated in the conventional rotor device. In comparison, the combined rotor device of the present invention increases the induced voltage by about 4 to 7 volts.

[0014] Please refer to Figures 4A and 4B. Figure 4A is a distribution diagram of the magnetic field lines of the combined rotor device of the present invention, and Figure 4B is a partial enlarged view of the magnetic field line distribution at the L1 position in Figure 4A. From the distribution diagram of the magnetic field lines, as shown in Figures 6B and 6C, it is clear that the density of the magnetic field lines is high in the conventional rotor device 4, so there is a lot of magnetic flux leakage. On the other hand, as shown in Figures 4A and 4B, in the center end rotor configuration 3 provided with the magnetic flux leakage prevention groove 314, the distribution of the magnetic field lines is different due to the structure different from the rotor structure 41 in the conventional rotor device 4, and the effect of no magnetic flux leakage can be achieved.

[0015] Please refer to Figures 5A to 5D. Figure 5A is a distribution diagram of magnetic flux density in the first end rotor configuration 1 and the second end rotor configuration 2, Figure 5B is a partial enlarged view of the magnetic flux density at the L2 position in Figure 5A, Figure 5C is a distribution diagram of the magnetic flux density in the center end rotor configuration 3, and Figure 5D is a partial enlarged view of the magnetic flux density at the L3 position in Figure 5C. As shown in Figures 5A and 5B, the first end rotor configuration 1 and the second end rotor configuration 2 were analyzed by software, and as a result, the structural density of the first end rotor configuration 1 and the second end rotor configuration 2 is high, so there is a lot of magnetic flux leakage, while the center end rotor configuration 3 shown in Figures 5C and 5D has a different design with the magnetic flux leakage prevention groove 314, so no magnetic flux leakage occurs.

[0016] From the above, in the combined rotor device of the present invention, by exposing the magnetic members to the outside through a plurality of magnetic flux leakage prevention grooves, it is possible to improve the induced voltage in the combined rotor device, prevent magnetic flux leakage from the rotor, increase the back electromotive force, etc. Furthermore, the structure of the combined core pieces can reduce the complexity of the processing of the rotor configuration at each end. [Explanation of symbols]

[0017] D Combined rotor device M Magnetic material S Rotor shaft center S1 Engagement part 1. First end rotor configuration 11 First core piece 111 First through hole 112 1st connection part 113 first end rotor shaft hole 114 Engagement part 2. Second End Rotor Configuration 21 Second core piece 211 Second through hole 212 2nd connection part 213 Second end rotor shaft hole 214 Engagement part 3 Center end rotor configuration 31 Center end core piece 311 Center end through hole 312 Center end connection 313 Center end rotor shaft hole 314 Magnetic flux leakage prevention groove 315 Engagement part 4. Conventional rotor device 41 Rotor structure 42 Rotor shaft center 411, 421 Concave and convex configuration

Claims

1. A combined rotor device, comprising: a center end rotor configuration including a plurality of center end core pieces each having a plurality of center end through holes, a plurality of center end connecting portions, and a plurality of magnetic flux leakage prevention grooves, the magnetic flux leakage prevention grooves communicating with the plurality of center end through holes and located on the outer edges of the plurality of center end core pieces, and the plurality of center end connecting portions being installed on the side surfaces of the respective center end core pieces such that the respective center end core pieces are connected to each other via the plurality of center end connecting portions to form a center end rotor shaft hole; a plurality of magnetic members respectively inserted through the plurality of central end through holes; a plurality of magnetic members each having one side exposed to the outside through said plurality of magnetic flux leakage prevention grooves;

2. 2. The combined rotor device according to claim 1, wherein said magnetic flux leakage prevention groove comprises a dovetail groove.

3. a first end rotor arrangement; The combined rotor device described in claim 1, characterized in that the first end rotor configuration includes a plurality of first core pieces having a plurality of first through holes and a plurality of first connecting portions, and the plurality of first connecting portions are installed on the side surfaces of each of the first core pieces so that each of the first core pieces is connected to each other via the plurality of first connecting portions to form a first end rotor shaft hole.

4. a second end rotor arrangement; A plurality of second core pieces are included, each having a plurality of second through holes and a plurality of second connecting portions, and the plurality of second connecting portions are installed on a side surface of each of the second core pieces such that the second core pieces are connected to each other via the plurality of second connecting portions to form a second end rotor shaft hole, the central end rotor arrangement is disposed between the first end rotor arrangement and the second end rotor arrangement; The plurality of magnetic members are further provided to extend through the plurality of first through holes and the plurality of second through holes, respectively; 4. The combined rotor device according to claim 3, further comprising a rotor shaft core extending through the first end rotor shaft hole, the second end rotor shaft hole and the central end rotor shaft hole so as to connect the first end rotor configuration, the second end rotor configuration and the central end rotor configuration.

5. 5. The combined rotor device according to claim 4, wherein the first connecting portion, the second connecting portion and the central end connecting portion have a recessed and protruding engagement structure.

6. 6. The combined rotor arrangement of claim 5, wherein the first end rotor configuration includes three first core pieces, the second end rotor configuration includes three second core pieces, and the center end rotor configuration includes three center end core pieces.

7. The combined rotor device according to claim 6, characterized in that the shapes of the three first core pieces, the three second core pieces, and the three central end core pieces are all sector-shaped and have the same proportional size.

8. 8. The combined rotor device according to claim 7, wherein the plurality of first connecting portions, the plurality of second connecting portions and the plurality of central end connecting portions are provided on both sides of the sector shape, respectively.

9. 2. The combined rotor device according to claim 1, wherein the magnetic flux leakage prevention groove comprises a groove that is narrow at an upper portion and wide at a lower portion.

10. 2. The combined rotor device according to claim 1, wherein the magnetic members having different magnetic poles are disposed in the central end through-holes communicating with both sides of the magnetic flux leakage prevention groove.

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