Rotor of an electric rotating machine

Abstract

This invention provides a rotor for a rotary electric machine that facilitates manufacturing. In the rotor (1) of the rotary electric machine, a magnet fixing member (5) has a fixing component (8) and bolts (9) for mounting the fixing component (8) to a rotor core (3). The fixing component (8) has: a fixing component body (81) disposed between one of two adjacent magnet rows (4) and the other magnet row (4); a plurality of first pressing portions (82) disposed on the fixing component body (81); and a plurality of second pressing portions (83) disposed on the fixing component body (81). The plurality of first pressing portions (82) press the plurality of magnets (7) constituting one magnet row (4) onto the outer peripheral surface of the rotor core (3). The plurality of second pressing portions (83) press the plurality of magnets (7) constituting the other magnet row (4) onto the outer peripheral surface of the rotor core (3).

Description

Technical Field

[0001] This invention relates to the rotor of a rotating electric machine. Background Technology

[0002] In conventional rotary electric machine rotors, multiple permanent magnets are held to the outer circumferential surface of the rotor body by multiple magnet holders. The multiple permanent magnets are arranged at equal intervals along the circumference of the rotor body. Magnet holders are respectively disposed between the multiple permanent magnets. Each permanent magnet is held to the outer circumferential surface of the rotor body by two magnet holders located on either side of the permanent magnet along the circumferential direction of the rotor body (see, for example, Patent Document 1).

[0003] Existing technical documents

[0004] Patent documents

[0005] Patent Document 1: Japanese Patent Publication No. 2015-519861

[0006] In the rotor of the rotary electric machine shown in Patent Document 1, each permanent magnet is held to the outer circumferential surface of the rotor body by two magnet holders located on either side of the permanent magnet in the circumferential direction of the rotor body. Therefore, when multiple permanent magnets are arranged along the axial direction of the rotor body, a number of magnet holders corresponding to the number of permanent magnets arranged along the axial direction of the rotor body is required. This increases the number of magnet holders and the number of rotor components. Consequently, the operation of holding multiple permanent magnets to the rotor body is labor-intensive and time-consuming, and the manufacture of the rotor is also labor-intensive and time-consuming. Summary of the Invention

[0007] The present invention was made to solve the problems described above, and its purpose is to obtain a rotor for a rotary electric motor that makes manufacturing easier.

[0008] The rotor of the rotary electric motor of the present invention comprises a rotor body, the rotor body having: a rotor core having an axis; a plurality of magnet rows spaced apart from each other on the outer peripheral surface of the rotor core along the circumferential direction of the rotor core; and a plurality of magnet fixing members disposed between the plurality of magnet rows, each magnet row being composed of a plurality of magnets arranged in a direction along the axis, each magnet fixing member having: a fixing member; and a mounting member for mounting the fixing member to the rotor core, each fixing member having: a fixing member body disposed between one magnet row and another of two adjacent magnet rows; a plurality of first pressing portions disposed on the fixing member body; and a plurality of second pressing portions disposed on the fixing member body, the plurality of first pressing portions pressing the plurality of magnets constituting one magnet row onto the outer peripheral surface of the rotor core respectively, and the plurality of second pressing portions pressing the plurality of magnets constituting another magnet row onto the outer peripheral surface of the rotor core respectively.

[0009] Invention Effects

[0010] The rotor of the rotary electric motor according to the present invention makes rotor manufacturing easier. Attached Figure Description

[0011] Figure 1 This is a perspective view showing the rotor of the rotary electric motor according to Embodiment 1.

[0012] Figure 2 It is shown Figure 1 An enlarged view of a portion of the rotor.

[0013] Figure 3 This shows an observation along the axial direction of the rotor core. Figure 2 The front view of the state when the magnet is fastened.

[0014] Figure 4 This is a front view showing the main part of the rotor of the rotary electric machine according to Embodiment 2.

[0015] Figure 5 This is an enlarged view showing the magnet fixing member in the rotor of the rotary electric motor according to Embodiment 3.

[0016] Figure 6 This is a perspective view showing the rotor of the rotary electric motor according to Embodiment 4.

[0017] Figure 7 It is shown Figure 6 An enlarged view of a portion of the rotor.

[0018] Figure 8 This shows an view along the axial direction of the rotor body. Figure 7 The front view of the state when the magnet is fastened.

[0019] Figure 9 This is a front view showing the state of the magnet fixing member in the rotor of the rotary electric machine of Embodiment 5 when viewed along the axial direction of the rotor body.

[0020] Label Explanation

[0021] 1: Rotor; 3: Rotor core; 4: Magnet array; 5: Magnet fixing component; 7: Magnet; 8: Fixing component; 9: Bolt (mounting component); 11: Rotating shaft; 12: Rotor body; 13: Outer peripheral component; 14: Spacer; 31: Groove; 81: Fixing component body; 82: First pressing part; 83: Second pressing part; 84: Cover part. Detailed Implementation

[0022] Implementation Method 1

[0023] Figure 1 This is a perspective view showing the rotor of the rotary electric motor according to Embodiment 1. Furthermore, Figure 2 It is shown Figure 1 An enlarged view of a portion of the rotor. In the figure, rotor 1 is positioned inside a cylindrical stator (not shown). Therefore, rotor 1 is used in an internal rotor type rotary electric motor. Rotor 1 has a rotating shaft 11 and a rotor body 12.

[0024] The rotor body 12 has a rotor core 3, multiple magnet rows 4 and multiple magnet fixing parts 5.

[0025] The rotor core 3 is a cylindrical iron core with an axis. A through hole 6 is provided in the rotor core 3 along its axis. A rotating shaft 11 is inserted into the through hole 6. The rotor core 3 is fixed to the rotating shaft 11 with the rotating shaft 11 inserted into the through hole 6. The rotor core 3 and the rotating shaft 11 are coaxially arranged.

[0026] Hereinafter, the direction along the axis of the rotor core 3 will be referred to as the axial direction of the rotor core 3. Furthermore, the circumferential direction of the circle centered on the axis of the rotor core 3 will be referred to as the circumferential direction of the rotor core 3. Additionally, the direction along the radius of the rotor core 3 will be referred to as the radial direction of the rotor core 3.

[0027] Multiple magnet rows 4 are disposed on the outer peripheral surface of the rotor core 3. Furthermore, the multiple magnet rows 4 are arranged at intervals from each other along the circumference of the rotor core 3. In this embodiment, the multiple magnet rows 4 are arranged at equal intervals along the circumference of the rotor core 3. Each magnet row 4 is composed of multiple magnets 7 arranged along the axial direction of the rotor core 3. In this embodiment, one magnet row 4 is composed of four magnets 7. As the magnets 7, plate-shaped permanent magnets along the outer peripheral surface of the rotor core 3 are used.

[0028] Each magnet 7 has a first magnet end 71 and a second magnet end 72. The first magnet end 71 is one end of the magnet 7 in the circumferential direction of the rotor core 3. The second magnet end 72 is the other end of the magnet 7 in the circumferential direction of the rotor core 3.

[0029] Magnet fixing members 5 are respectively disposed between multiple magnet rows 4. Therefore, the number of magnet fixing members 5 is the same as the number of magnet rows 4. Multiple magnets 7 constituting one magnet row 4 are fixed to the outer circumferential surface of the rotor core 3 by two magnet fixing members 5 located on both sides of the magnet row 4 in the circumferential direction of the rotor core 3.

[0030] Each magnet fixing member 5 has a fixing component 8 and multiple bolts 9 as mounting components. The fixing component 8 is mounted to the outer peripheral surface of the rotor core 3 by the multiple bolts 9. In this embodiment, one fixing component 8 is mounted to the outer peripheral surface of the rotor core 3 by two bolts 9.

[0031] like Figure 2As shown, the fixing member 8 has a fixing member body 81, a plurality of first pressing parts 82 and a plurality of second pressing parts 83.

[0032] The fixing component body 81 is positioned along the axial direction of the rotor core 3 between two adjacent magnet rows 4 in the circumferential direction of the rotor core 3. The fixing component body 81 has two bolt through holes. These two bolt through holes are positioned separately from each other along the length of the fixing component body 81. The fixing component 8 is mounted to the rotor core 3 by bolts 9 passing through the respective bolt through holes of the fixing component body 81. The fixing component body 81 has multiple first pressing parts 82 and multiple second pressing parts 83.

[0033] Here, one end of the circumferential fixing member body 81 of the rotor core 3 is designated as the first circumferential end of the fixing member body 81. Furthermore, the other end of the circumferential fixing member body 81 of the rotor core 3 is designated as the second circumferential end of the fixing member body 81. A plurality of first pressing portions 82 are provided at the first circumferential end of the fixing member body 81. A plurality of second pressing portions 83 are provided at the second circumferential end of the fixing member body 81. Furthermore, the fixing member body 81 is positioned between one magnet row 4 and the other magnet row 4 with the first circumferential end facing one magnet row 4 and the second circumferential end facing another magnet row 4.

[0034] A plurality of first pressing portions 82 are arranged at intervals along the length of the fixing member body 81. Therefore, the plurality of first pressing portions 82 are separated from each other. Each first pressing portion 82 protrudes from a first circumferential end of the fixing member body 81 toward the circumferential outer side of the fixing member body 81.

[0035] The number of first pressing portions 82 of the fixing member 8 is the same as the number of magnets 7 constituting a magnet array 4. In this embodiment, the number of first pressing portions 82 of the fixing member 8 is four. The positions of each of the plurality of first pressing portions 82 and the positions of each of the plurality of magnets 7 constituting a magnet array 4 are aligned with each other in the axial direction of the rotor core 3.

[0036] The first magnet ends 71 ​​of a plurality of magnets 7 constituting a magnet array 4 are inserted between the plurality of first pressing parts 82 and the outer peripheral surface of the rotor core 3. The plurality of first pressing parts 82 press the plurality of magnets 7 constituting a magnet array 4 onto the outer peripheral surface of the rotor core 3.

[0037] Multiple second pressing portions 83 are arranged at intervals along the length of the fixing member body 81. Therefore, the multiple second pressing portions 83 are separated from each other. Each second pressing portion 83 protrudes from the second circumferential end of the fixing member body 81 toward the circumferential outer side of the fixing member body 81.

[0038] The number of second pressing portions 83 of the fixing member 8 is the same as the number of magnets 7 constituting another magnet row 4. In this embodiment, the number of second pressing portions 83 of the fixing member 8 is four. The positions of each of the plurality of second pressing portions 83 and the positions of each of the plurality of magnets 7 constituting another magnet row 4 are aligned with each other in the axial direction of the rotor core 3.

[0039] Between the plurality of second pressing portions 83 and the outer peripheral surface of the rotor core 3, the second magnet ends 72 of the plurality of magnets 7 constituting another magnet array 4 are respectively inserted. The plurality of second pressing portions 83 press the plurality of magnets 7 constituting another magnet array 4 onto the outer peripheral surface of the rotor core 3.

[0040] In each magnet array 4, each magnet 7 is pressed against the outer circumferential surface of the rotor core 3 by the first pressing part 82 of one of the two fixing parts 8 located on both sides of the magnet array 4 in the circumferential direction of the rotor core 3 and the second pressing part 83 of the other fixing part 8.

[0041] The first magnet end 71 of each magnet 7 is pressed against the outer peripheral surface of the rotor core 3 by the first pressing part 82 of the fixing member 8. The second magnet end 72 of each magnet 7 is pressed against the outer peripheral surface of the rotor core 3 by the second pressing part 83 of the other fixing member 8. Thus, each magnet 7 is fixed to the outer peripheral surface of the rotor core 3.

[0042] The main body 81 of the fixing component has a base plate portion 811, a plurality of first side wall portions 812 and a plurality of second side wall portions 813.

[0043] The base plate 811 is a plate portion arranged along the axial direction of the rotor core 3. The fixing member 8 is arranged such that the width direction of the base plate 811 is aligned with the circumferential direction of the rotor core 3. Bolt through holes for bolts 9 to pass through are provided in the base plate 811.

[0044] A plurality of first sidewall portions 812 are provided at one end of the base plate portion 811 in the width direction. Furthermore, the plurality of first sidewall portions 812 are arranged at intervals along the axial direction of the rotor core 3, aligning with the positions of the plurality of first pressing portions 82. The plurality of first sidewall portions 812 constitute the first circumferential end of the fixing member body 81. A plurality of first pressing portions 82 are provided on each of the plurality of first sidewall portions 812.

[0045] Multiple second sidewall portions 813 are provided at the other end of the base plate portion 811 in the width direction. Furthermore, the multiple second sidewall portions 813 are arranged at intervals along the axial direction of the rotor core 3, aligning with the positions of the multiple second pressing portions 83. The multiple second sidewall portions 813 constitute the second circumferential end of the fixing member body 81. Multiple second pressing portions 83 are provided on each of the multiple second sidewall portions 813.

[0046] Figure 3 This shows an observation along the axial direction of rotor core 3. Figure 2 The front view of the magnet fixing member 5 in its current state. In each magnet fixing member 5, the fixing member 8 is installed on the rotor core 3 with the fixing member body 81 separated from the outer peripheral surface of the rotor core 3.

[0047] At the locations where the first side wall portion 812 and the second side wall portion 813 are located, the cross-sectional shape of the main body 81 of the fixing component in a plane perpendicular to the axial direction of the rotor core 3 is formed into a U-shape by the base plate portion 811, the first side wall portion 812 and the second side wall portion 813.

[0048] A first side surface 814 is formed on each of the first side wall portions 812. A second side surface 815 is formed on each of the second side wall portions 813. Thus, a plurality of first side surfaces 814 and a plurality of second side surfaces 815 are formed on the fixing member body 81. At the locations where the first side wall portions 812 and the second side wall portions 813 exist, the first side surface 814 and the second side surface 815 are opposite to each other in the width direction of the base plate portion 811.

[0049] The first magnet end 71 of each magnet 7 in a magnet array 4 contacts each first side surface 814. As a result, movement of each magnet 7 in a direction closer to the main body 81 of the fixing component than the first side surface 814 is prevented.

[0050] In another magnet array 4, the second magnet end 72 of each magnet 7 contacts each second side surface 815. As a result, movement of each magnet 7 in a direction closer to the fixed component body 81 than each second side surface 815 is prevented.

[0051] That is, the first magnet end 71 of each magnet 7 in one magnet column 4 and the second magnet end 72 of each magnet 7 in another magnet column 4 come into contact with the fixing member body 81. As a result, the movement of each magnet 7 in each magnet column 4 in the direction of approaching the fixing member body 81 is prevented.

[0052] Metal, resin, etc., are used as the material for the fixing component 8. When the fixing component 8 is made of metal, it can be manufactured by bending and drilling a metal sheet. In this embodiment 1, for example, a stainless steel sheet is used as the metal sheet. Furthermore, when the fixing component 8 is made of resin, it can be manufactured by resin molding. Alternatively, the fixing component 8 can also be manufactured by cutting a resin molded object.

[0053] In each magnet row 4, the first magnet end 71 of magnet 7 contacts the first side 814 of a fixed component body 81, and the second magnet end 72 of magnet 7 contacts the second side 815 of another fixed component body 81, thereby positioning magnet 7 in the circumferential direction of rotor core 3.

[0054] Bolt 9 is screwed into a threaded hole (not shown) provided in the rotor core 3. Furthermore, the thickness of the bolt 9 head is a thickness that converges within the range of the thicknesses of the two adjacent magnet rows 4. In this embodiment, a bolt with a hexagonal hole is used as bolt 9.

[0055] Next, the manufacturing method of rotor 1 will be described. When manufacturing rotor 1, multiple magnet arrays 4 are fixed to the outer peripheral surface of rotor core 3. When fixing multiple magnet arrays 4 to the outer peripheral surface of rotor core 3, firstly, multiple bolts 9 are used to install fixing parts 8 to the outer peripheral surface of rotor core 3, thereby installing the first magnet fixing part 5 to the outer peripheral surface of rotor core 3.

[0056] Next, the first magnet ends 71 ​​of the magnets 7 are inserted one by one between the first pressing portions 82 of the first magnet fixing member 5 and the outer peripheral surface of the rotor core 3. At this time, each first pressing portion 82 is pressed against the first magnet end 71 and undergoes elastic deformation. As a result, the first magnet ends 71 ​​of each magnet 7 are pressed against the outer peripheral surface of the rotor core 3. By arranging multiple magnets 7 along the first magnet fixing member 5, the first magnet row 4 adjacent to the first magnet fixing member 5 is arranged on the outer peripheral surface of the rotor core 3.

[0057] Next, the second magnet fixing member 5 is installed on the outer peripheral surface of the rotor core 3. At this time, the second magnet end 72 of each magnet 7 in the first magnet row 4 is pressed against the outer peripheral surface of the rotor core 3 using the second pressing part 83, and the fixing member 8 is installed on the outer peripheral surface of the rotor core 3 using multiple bolts 9. Thus, the first magnet row 4 is positioned between the first magnet fixing member 5 and the second magnet fixing member 5 in the circumferential direction of the rotor core 3.

[0058] When the second magnet fixing member 5 is installed onto the outer peripheral surface of the rotor core 3, each of the second pressing parts 83 presses against the end 72 of the second magnet and undergoes elastic deformation. Thus, the second magnet end 72 of each magnet 7 is pressed against the outer peripheral surface of the rotor core 3. Each magnet 7 in the first magnet row 4 is fixed to the outer peripheral surface of the rotor core 3 by being pressed against the outer peripheral surface of the rotor core 3 by the first magnet end 71 and the second magnet end 72.

[0059] Then, the above steps are repeated to alternately install the magnet fixing pieces 5 and the magnet rows 4 on the outer peripheral surface of the rotor core 3. In this way, multiple magnet fixing pieces 5 are used to fix multiple magnet rows 4 to the outer peripheral surface of the rotor core 3.

[0060] In this rotor 1, the main body 81 of the fixing component is provided with a plurality of first pressing parts 82 and a plurality of second pressing parts 83, wherein the plurality of first pressing parts 82 press a plurality of magnets 7 in one magnet row 4, and the plurality of second pressing parts 83 press a plurality of magnets 7 in another magnet row 4. Therefore, a plurality of magnets 7 in the magnet row 4 can be fixed to the outer peripheral surface of the rotor core 3 using a common magnet fixing member 5. As a result, the number of magnet fixing members 5 can be reduced, and the number of components in the rotor 1 can be reduced. Therefore, the labor and time required to fix a plurality of magnets 7 to the outer peripheral surface of the rotor core 3 can be reduced, and the manufacturing of the rotor 1 can be made easier.

[0061] Furthermore, even when the shapes of the individual magnets 7 are different, each magnet 7 can be pressed independently onto the outer circumferential surface of the rotor core 3 without being affected by the shape deviation. Therefore, the multiple magnets 7 can be fixed to the outer circumferential surface of the rotor core 3 more reliably.

[0062] Furthermore, the multiple magnets 7 constituting one magnet array 4 and the multiple magnets 7 constituting another magnet array 4 are in contact with the fixing component body 81. Therefore, the positioning of each magnet 7 in the circumferential direction of the rotor core 3 can be easily performed. In particular, in the operation of alternately installing the magnet fixing member 5 and the magnet array 4 on the outer peripheral surface of the rotor core 3, the contact between each magnet 7 and the fixing component body 81 can be easily achieved. Therefore, by alternately installing the magnet fixing member 5 and the magnet array 4 on the outer peripheral surface of the rotor core 3, the labor and time required for positioning each magnet 7 can be reduced, and the efficiency of fixing multiple magnet arrays 4 to the rotor core 3 can be improved.

[0063] Implementation Method 2

[0064] Figure 4 This is a front view showing the main part of the rotor of the rotary electric machine according to Embodiment 2. Figure 4 The magnet array 4 and magnet fixing member 5 are shown when viewed along the axial direction of the rotor 1. In this embodiment, the installation state of one of the two fixing members 8 that are adjacent to each other across the magnet array 4 and installed on the rotor core 3 is different from the installation state of the other fixing member 8 on the rotor core 3.

[0065] A fixing component 8 is installed on the outer peripheral surface of the rotor core 3 using bolts 9 while the fixing component body 81 is in contact with the outer peripheral surface of the rotor core 3. In one fixing component 8, the base plate portion 811 of the fixing component body 81 is in contact with the outer peripheral surface of the rotor core 3.

[0066] Another fixing component 8 is mounted to the outer peripheral surface of the rotor core 3 using bolts 9, with the fixing component body 81 separated from the outer peripheral surface of the rotor core 3. This creates a gap between the base plate 811 of the fixing component body 81 and the outer peripheral surface of the rotor core 3 in the other fixing component 8. Other structural features of this embodiment are the same as in Embodiment 1. Furthermore, the manufacturing method of the rotor 1 is also the same as in Embodiment 1.

[0067] In this rotor 1, the fixing body 81 of one fixing member 8 contacts the outer peripheral surface of the rotor core 3, while the fixing body 81 of the other fixing member 8 moves away from the outer peripheral surface of the rotor core 3. Therefore, by adjusting the tightening force of the bolts 9 that mount the other fixing member 8 to the outer peripheral surface of the rotor core 3, the distance between the fixing body 81 of the other fixing member 8 and the outer peripheral surface of the rotor core 3 can be adjusted. This makes it easier to adjust the pressing force of each magnet 7 against the outer peripheral surface of the rotor core 3, and makes the manufacture of the rotor 1 easier.

[0068] Implementation Method 3

[0069] Figure 5 This is an enlarged view showing the magnet fixing member in the rotor of the rotary electric machine according to Embodiment 3. Additionally, Figure 5 It is the same as implementation method 1. Figure 3 The corresponding diagram shows that multiple slots 31 are formed on the outer circumferential surface of the rotor core 3. A fixing component body 81 is embedded in each of the multiple slots 31.

[0070] Each slot 31 is formed on the outer peripheral surface of the rotor core 3 along the axial direction of the rotor core 3. Furthermore, each slot 31 is formed on the outer peripheral surface of the rotor core 3, in the portion exposed between the plurality of magnet rows 4. A portion of the fixing member body 81 is embedded in each slot 31 while the base plate portion 811 is in contact with the bottom surface of the slot 31. Other structures in this embodiment are the same as in Embodiment 1. Furthermore, the manufacturing method of the rotor 1 is also the same as in Embodiment 1.

[0071] In such a rotor 1, multiple slots 31 for the fixing component bodies 81 to be inserted are formed on the outer peripheral surface of the rotor core 3. Therefore, it is easier to position each fixing component 8 relative to the rotor core 3.

[0072] Implementation Method 4

[0073] Figure 6This is a perspective view showing the rotor of the rotary electric motor according to Embodiment 4. Furthermore, Figure 7 It is shown Figure 6 An enlarged view of a portion of the rotor. Furthermore, Figure 8 This shows an view along the axial direction of the rotor body. Figure 7 The front view shows the state of the magnet fixing component. The rotor 1 has a rotating shaft 11, a rotor body 12, and an outer peripheral component 13. Additionally, in... Figure 6 and Figure 7 The image shows the state after the outer peripheral component 13 has been removed from the rotor 1.

[0074] The outer peripheral component 13 is a protective component that protects the rotor body 12. The outer peripheral component 13 surrounds the rotor body 12 in the circumferential direction of the rotor core 3. Furthermore, the outer peripheral component 13 is wound around the rotor body 12 in a state of contact with the plurality of magnet rows 4 respectively. As the outer peripheral component 13, a strip-shaped sheet, a strip-shaped belt, or the like is used.

[0075] The fixing member 8 in each magnet fixing member 5 is sized to converge within the thickness range of the two adjacent magnet rows 4. Furthermore, the fixing member 8 in each magnet fixing member 5 is disposed between the outer peripheral surface of the rotor core 3 and the outer peripheral member 13.

[0076] Each magnet fixing member 5 has a fixing member body 81, a plurality of first pressing parts 82, a plurality of second pressing parts 83, and a covering part 84. The structure of the fixing member body 81, the plurality of first pressing parts 82, and the plurality of second pressing parts 83 in this embodiment is the same as that in embodiment 1.

[0077] The cover portion 84 is a strip-shaped plate portion arranged along the axial direction of the rotor core 3. The cover portion 84 is radially opposed to the base plate portion 811 of the rotor core 3. The cover portion 84 is connected to a plurality of first pressing portions 82 and a plurality of second pressing portions 83. The cover portion 84 is located between the fixing member body 81 and the outer peripheral member 13. The cover portion 84 is located closer to the outer peripheral member 13 than the heads of each bolt 9. The cover portion 84 is in contact with the outer peripheral member 13.

[0078] like Figure 7 As shown, the cover portion 84 has multiple openings 85, larger than the heads of the bolts 9, aligned with the positions of each bolt 9. In this embodiment, the cover portion 84 has two openings 85. The fixing member 8 is mounted to the outer peripheral surface of the rotor core 3 by two bolts 9 passing through each opening 85 and reaching the fixing member body 81.

[0079] The fixing component 8 is made of metal, resin, or the like. When the fixing component 8 is made of metal, it can be manufactured by drawing the metal material. When the fixing component 8 is made of resin, it can be manufactured by resin molding. Other structures in this embodiment are the same as in Embodiment 1. Furthermore, the manufacturing method of the rotor 1 is also the same as in Embodiment 1.

[0080] In this rotor 1, the cover 84 of the fixing member 8 is located between the fixing member body 81 and the outer peripheral member 13. Therefore, in the space between the multiple magnet rows 4, the cover 84 of the fixing member 8 can support the outer peripheral member 13. As a result, when the outer peripheral member 13 is wound around the rotor body 12, the outer peripheral member 13 is less likely to loosen. Therefore, the outer peripheral member 13 can be easily wound around the rotor body 12.

[0081] Implementation Method 5

[0082] Figure 9 This is a front view showing the state of the magnet fixing member in the rotor of the rotary electric machine of Embodiment 5 when viewed along the axial direction of the rotor body. Additionally, Figure 9 It is the same as implementation method 4. Figure 8 The corresponding figure shows that, in addition to the rotating shaft 11 and the rotor body 12, the rotor 1 also has an outer peripheral component 13 and multiple spacers 14. The structure of the rotating shaft 11 and the rotor body 12 is the same as in Embodiment 1. The structure of the outer peripheral component 13 is the same as in Embodiment 4.

[0083] Multiple spacers 14 are respectively disposed between each of the multiple magnet fixing members 5 and the outer peripheral member 13. Therefore, one spacer 14 is disposed in each space existing between the multiple magnet rows 4.

[0084] Each spacer 14 is a strip-shaped plate arranged along the axial direction of the rotor core 3. Furthermore, each spacer 14 is sandwiched between each bolt 9 and the outer peripheral component 13. Each spacer 14 is in contact with the outer peripheral component 13. Metal, resin, or the like is used as the material for each spacer 14. Other structural features of this embodiment are the same as in Embodiment 1. Furthermore, the manufacturing method of the rotor 1 is also the same as in Embodiment 1.

[0085] In such a rotor 1, multiple spacers 14 are respectively disposed between each of the multiple magnet holders 5 and the outer peripheral component 13. Therefore, the outer peripheral component 13 can be supported by the spacers 14 in the space between the multiple magnet rows 4. As a result, the outer peripheral component 13 can be easily wound around the rotor body 12.

[0086] Furthermore, in embodiments 1 to 3 described above, the outer peripheral component 13 of embodiment 4 is not wound around the rotor body 12. However, the outer peripheral component 13 of embodiment 4 may be wound around the rotor body 12 of embodiments 1 to 3. In this case, the outer peripheral component 13 is wound around the rotor body 12 in a state of contact with the plurality of magnet rows 4.

[0087] Furthermore, in embodiments 1, 4, and 5 described above, each fixing member 8 is installed on the rotor core 3 with its main body 81 separated from the outer peripheral surface of the rotor core 3. However, it is also possible that each fixing member 8 is installed on the rotor core 3 with its main body 81 in contact with the outer peripheral surface of the rotor core 3. That is, in embodiments 1, 4, and 5 described above, it is also possible that two fixing members 8 adjacent to each other across the magnet array 4 are installed on the outer peripheral surface of the rotor core 3 with their main bodies 81 in contact with the outer peripheral surface of the rotor core 3. In this case, in each fixing member 8, the base plate portion 811 of the fixing member main body 81 is in contact with the outer peripheral surface of the rotor core 3.

[0088] Furthermore, in each of the above embodiments, a plurality of first sidewall portions 812 arranged at intervals along the axial direction of the rotor core 3 are provided on the base plate portion 811. However, it is also possible to provide a single first sidewall portion 812 arranged along the axial direction of the rotor core 3 on the base plate portion 811. In this case, a first side surface 814 is formed on the first sidewall portion 812 that contacts the first magnet end 71 of each magnet 7 in a magnet array 4.

[0089] Furthermore, in each of the above embodiments, a plurality of second sidewall portions 813 arranged at intervals along the axial direction of the rotor core 3 are provided on the base plate portion 811. However, it is also possible to provide a single second sidewall portion 813 arranged along the axial direction of the rotor core 3 on the base plate portion 811. In this case, a second side surface 815 is formed on the second sidewall portion 813 that contacts the second magnet end 72 of each magnet 7 in the other magnet row 4.

[0090] Furthermore, in each of the above embodiments, one fixing component 8 is mounted to the outer peripheral surface of the rotor core 3 by two bolts 9. However, the number of bolts 9 used to mount one fixing component 8 to the outer peripheral surface of the rotor core 3 can be one or more.

[0091] Furthermore, in each of the above embodiments, bolts 9 are used as mounting components for attaching the fixing member 8 to the outer peripheral surface of the rotor core 3. However, this is not a limitation; pins may also be used as mounting components for attaching the fixing member 8 to the outer peripheral surface of the rotor core 3.

Claims

1. A rotor for a rotating electric motor, wherein, The rotor of the rotary electric motor has a rotor body. The rotor body includes: a rotor core having an axis; a plurality of magnet rows spaced apart from each other along the circumference of the rotor core on its outer circumferential surface; and a plurality of magnet retainers disposed between the plurality of magnet rows. Each of the aforementioned magnet columns consists of a plurality of magnets arranged in a direction along the said axis. Each of the aforementioned magnet fixing members includes: a fixing component; and a mounting component that mounts the fixing component to the rotor core. Each of the aforementioned fixing components includes: a fixing component body disposed between one of the two adjacent magnet columns; a plurality of first pressing portions disposed on the fixing component body and spaced apart from each other along the length direction of the fixing component body; and a plurality of second pressing portions disposed on the fixing component body and spaced apart from each other along the length direction of the fixing component body. Each of the first pressing portions presses each of the magnets constituting the magnet array onto the outer peripheral surface of the rotor core. Each of the second pressing portions presses each of the magnets constituting the other magnet array onto the outer peripheral surface of the rotor core. The number of the first pressing parts is the same as the number of magnets in the one magnet column, and the number of the second pressing parts is the same as the number of magnets in the other magnet column.

2. The rotor of the rotary electric motor according to claim 1, wherein, The plurality of magnets constituting one magnet array and the plurality of magnets constituting another magnet array are in contact with the main body of the fixing component.

3. The rotor of the rotary electric motor according to claim 1 or 2, wherein, Multiple slots are formed on the outer circumferential surface of the rotor core for the main body of the fixing component to be embedded.

4. The rotor of the rotary electric motor according to claim 1 or 2, wherein, One of the two fixing components that are adjacent to each other across the magnet array is mounted to the rotor core using the mounting component while the main body of the fixing component is in contact with the outer peripheral surface of the rotor core. Another fixing component is mounted to the rotor body using the mounting component while the fixing component body is separated from the outer peripheral surface of the rotor core.

5. The rotor of the rotary electric motor according to claim 1 or 2, wherein, The rotor of the rotary electric motor has an outer peripheral component that is wound around the rotor body in contact with the plurality of magnet arrays. Each of the aforementioned fixing components has a cover portion located between the fixing component body and the outer peripheral component. The cover portion is connected to the plurality of first pressing portions and the plurality of second pressing portions.

6. The rotor of the rotary electric motor according to claim 3, wherein, The rotor of the rotary electric motor has an outer peripheral component that is wound around the rotor body in contact with the plurality of magnet arrays. Each of the aforementioned fixing components has a cover portion located between the fixing component body and the outer peripheral component. The cover portion is connected to the plurality of first pressing portions and the plurality of second pressing portions.

7. The rotor of the rotary electric motor according to claim 4, wherein, The rotor of the rotary electric motor has an outer peripheral component that is wound around the rotor body in contact with the plurality of magnet arrays. Each of the aforementioned fixing components has a cover portion located between the fixing component body and the outer peripheral component. The cover portion is connected to the plurality of first pressing portions and the plurality of second pressing portions.

8. The rotor of the rotary electric machine according to claim 1 or 2, wherein, The rotor of the rotary electric motor includes: The outer peripheral component, which is wound around the rotor body in contact with the plurality of magnet columns; and Multiple spacers are respectively disposed between each of the multiple magnet fasteners and the outer peripheral component.

9. The rotor of the rotary electric motor according to claim 3, wherein, The rotor of the rotary electric motor includes: The outer peripheral component, which is wound around the rotor body in contact with the plurality of magnet columns; and Multiple spacers are respectively disposed between each of the multiple magnet fasteners and the outer peripheral component.

10. The rotor of the rotary electric motor according to claim 4, wherein, The rotor of the rotary electric motor includes: The outer peripheral component, which is wound around the rotor body in contact with the plurality of magnet columns; and Multiple spacers are respectively disposed between each of the multiple magnet fasteners and the outer peripheral component.

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