JP2013009553A - Rotor of rotary electric machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent components attached to a rotor of a rotary electric machine from scattering.SOLUTION: A coil 26 is arranged in a slot of a rotor core 18 of a rotor 10. Gaps in the slot are filled with resin 30. An end plate 36 is arranged at each of both outward side ends in a rotor axis direction of the rotor core 18. A circumferential groove 42 is formed in an outer peripheral surface 40 of the end plate. A common columnar side face is formed of an outer peripheral surface 34 of a coil member 32 including the coil 26 and the resin 30, an apical surface of the magnetic pole of the rotor core 18, and the outer peripheral surface 40 of the end plate. A steel wire 44 is spirally wound along the columnar side face from one end to the other end of the rotor 10. The steel wire 44 is wound in the circumferential groove 42 in an overlapping manner.

Description

  The present invention relates to a rotor of a rotating electrical machine, and more particularly to its structure.

  2. Description of the Related Art There are known a generator that converts energy of rotational motion into electrical energy, and an electric motor that generates a rotational motion by forming a rotating magnetic field using electrical energy. There are also known electrical devices that can operate on both a generator and an electric motor. Hereinafter, these electric devices will be described as rotating electric machines. A rotating electric machine includes two parts that rotate relatively, and a fixed part is usually called a stator and a rotating part is called a rotor.

  A rotor in which a permanent magnet is arranged on the outer peripheral surface is known, and a technique for preventing the permanent magnet from scattering by centrifugal force when the rotor rotates is disclosed in the following patent document. In the following Patent Document 1, a carbon fiber reinforced plastic cylinder is arranged so as to cover a permanent magnet arranged on the outer peripheral surface of the rotor. The cylinder receives a centrifugal force acting on the permanent magnet and prevents the permanent magnet from scattering. Moreover, in the following Patent Document 2, a thin cylindrical cover for preventing scattering that covers a permanent magnet disposed on the outer peripheral surface of a rotor is shown. In Patent Document 3 below, an electromagnetic fine wire is wound around a permanent magnet disposed on the outer peripheral surface of a rotor to prevent scattering of the permanent magnet.

JP 11-89142 A JP 2008-193847 A JP 2006-136132 A

  In the said patent document 1, since the cylinder which covers a permanent magnet is manufactured using the plastic material, there exists a problem that it is weak to a heat | fever. When a cylinder or cover is manufactured using a metal material having a relatively high heat resistance, an eddy current is generated in the cylinder or cover, which causes a decrease in torque and an increase in loss. In the said patent document 3, generation | occurrence | production of an eddy current is suppressed by using an electromagnetic fine wire for prevention of scattering of a permanent magnet. However, the method for fixing the electromagnetic wire to the rotor is unknown.

  An object of the present invention is to prevent a metal wire from being scattered by winding a metal wire around an outer peripheral side of a member provided in a rotor of a rotating electrical machine, or preventing the metal wire from being broken.

  In the rotor of the rotating electrical machine of the present invention, a metal wire is wound around the outer periphery of the rotor, and a member that may be scattered by centrifugal force is pressed from the outer peripheral side to prevent the scattering. The metal wire is spirally wound around the rotor from one end to the other end in the rotor axial direction along the outer peripheral surface thereof. The metal wire is wound in an overlapping manner at both ends in the rotor axial direction. By overlapping and winding the metal wire, friction acts between the stacked wires, and stress concentration due to the tension applied to the metal wire is prevented.

  Examples of scattering prevention include a coil component including a coil mounted on a magnetic pole arranged in the circumferential direction of the rotor so as to go around the magnetic pole. The metal wire is wound along the outer peripheral surfaces of the rotor core and the coil member. Accordingly, the metal wire is wound around the coil member from the outside, and the coil member is prevented from jumping out from the rotor by the centrifugal force. The metal wire may be in direct contact with the outer peripheral surface of the coil, and when the coil component includes a resin portion including the coil inside, the coil may be pressed from the outside via this resin.

  End plates can be arranged on both outer sides of the rotor core in the rotor axial direction. The outer peripheral surface of the end plate can form a common cylindrical side surface with the outer peripheral surface of the rotor core and the outer peripheral surface of the coil member. A circumferential groove extending in the circumferential direction can be formed on the outer peripheral surface of the end plate, and the metal wire is wound around the circumferential groove in an overlapping manner.

  The coil end portion of the coil can be inclined toward the rotor axis, and the end plate can have a portion surrounding the inclined coil end portion.

  Furthermore, at least a part of the circumferential groove on the outer peripheral surface of the end plate can be provided in a portion of the end plate surrounding the coil end portion.

  Furthermore, the circumferential groove of the end plate can have a side surface on the rotor core side as an inclined surface.

  Furthermore, a plurality of metal wires can be wound in parallel.

  Furthermore, the metal wire can be fixed to the tip of every other magnetic pole in the circumferential direction by welding.

  A permanent magnet provided on the surface of the rotor of the rotating electrical machine can also be used as an object to prevent scattering. The metal wire is wound along the outer peripheral surface of the permanent magnet. Thereby, a metal wire is wound from the outer side of a permanent magnet, and prevents a permanent magnet jumping out toward the outer side of a rotor by centrifugal force.

  End plates can be arranged on both outer sides of the rotor core in the rotor axial direction. The outer peripheral surface of the end plate can form a common cylindrical side surface with the outer peripheral surface of the permanent magnet. A circumferential groove extending in the circumferential direction can be formed on the outer peripheral surface of the end plate, and the metal wire is wound around the circumferential groove in an overlapping manner.

  Furthermore, the circumferential groove of the end plate can have a side surface on the rotor core side as an inclined surface.

  Furthermore, a plurality of metal wires can be wound in parallel.

  Furthermore, the metal wire can be fixed to the tip of every other magnetic pole in the circumferential direction by welding.

  By winding the metal wire around the outer periphery of the rotor, scattering of the member mounted on the rotor is prevented. Moreover, since eddy currents are less likely to occur in the metal wire, loss can be reduced.

It is sectional drawing containing the axis line of the rotor of the rotary electric machine of this embodiment. It is sectional drawing orthogonal to the axis line of the rotor of the rotary electric machine of this embodiment. It is explanatory drawing in the case of fixing a steel wire in a magnetic pole front-end | tip. It is explanatory drawing in the case of fixing a steel wire in a magnetic pole front-end | tip. It is a partially broken perspective view of the rotor of the rotary electric machine of other embodiment. It is a figure which shows the one aspect | mode of the fixation of the end of a steel wire. It is a figure which shows the one aspect | mode of the fixation of the end of a steel wire. It is a figure explaining the order which winds a steel wire. It is a figure which shows the other aspect of fixation of the end of a steel wire. It is sectional drawing of the rotor of the rotary electric machine of other embodiment. It is a figure which shows the one aspect | mode of winding of a steel wire. It is a figure which shows the other aspect of winding of a steel wire. It is sectional drawing of the rotor of the rotary electric machine of other embodiment.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 and FIG. 2 are cross-sectional views of a rotor 10 of a rotating electrical machine according to this embodiment, particularly a wound field type rotating electrical machine. FIG. 1 shows a cross section including the rotation axis of the rotor, and FIG. 2 includes a cross section orthogonal to the rotation axis of the rotor. Although not shown, a stator that forms a rotating magnetic field on the radially outer side of the rotor 10 is disposed so as to surround the rotor 10.

  The rotor 10 has a substantially cylindrical shape, and the rotor shaft 12 penetrates along the central axis of the cylinder (hereinafter referred to as the rotor axis). The rotor 10 is fixed on the rotor shaft 12 by an axial fixing tool 14 in the rotor axial direction, and is fixed by a known anti-rotation structure such as a key or a spline in the rotational direction. Thereby, the rotor 10 rotates integrally with the rotor shaft 12.

  The rotor 10 has a rotor core 18 in which electromagnetic steel plates 16 are laminated. The rotor core 18 has a cylindrical central portion 20 and magnetic poles 22 extending radially outward from the central portion 20. Each of the laminated electromagnetic steel sheets 16 has a shape having a circular central portion and a portion extending radially outward from the central portion shown in FIG. A substantially rectangular parallelepiped magnetic pole 22 extending in the rotor axial direction along the outer periphery of the portion 20 and the central portion 20 is formed. A space between the magnetic poles 22 adjacent to each other in the circumferential direction is called a slot 24 in which the coil 26 is disposed. In FIG. 1, the cross section of the magnetic pole 22 is shown above the axis, and the cross section of the slot 24 is shown below.

  The coil 26 is formed by winding a coil conductor around the magnetic pole 22. When the coil conductor is wound around the magnetic pole 22, a portion protruding from the end face of the rotor core 18 in the rotor axial direction, that is, a so-called coil end 28 is formed. Resin 30 is injected into the slots 24 and between the coil conductors and between the coil conductors and the rotor core 18 and hardened. A coil member 32 disposed in the slot 24 is formed by the coil 26 and the cured resin 30. The outer peripheral surface 34 of the coil member 32 forms one cylindrical side surface together with the tip surface of the magnetic pole 22. In addition, as a method for manufacturing the coil member, a coil conductor 32 wound in advance may be molded with resin to form the coil member 32, and the formed coil member 32 may be inserted into the slot 24. Alternatively, the coil conductor may be wound around the magnetic pole 22 to form a coil, and then the coil member may be formed by placing a spacer on the outside of the formed coil. The spacer may be made of resin, and the coil is supported by the steel wire so as not to jump out by the steel wire. Thus, a coil member including a coil attached to the magnetic pole so as to go around the magnetic pole is formed.

  The rotor 10 includes an end plate 36 disposed outside the rotor core 18 in the rotor axial direction. The end plates 36 are disposed on both sides of the rotor core 18, and the aforementioned axial stator is disposed adjacent to the outer side of the end plate 36. The end plate 36 is positioned adjacent to the rotor core 18, and a concave portion 38 that accommodates the coil end 28 is formed on a surface facing the rotor core 18. The end plate 36 has a disk shape or a short cylindrical shape. The disc-shaped or columnar outer peripheral surface 40 forms a common cylindrical side surface with the tip surface of the magnetic pole 22 and the outer peripheral surface 34 of the coil member. That is, the rotor 10 having the rotor core 18, the coil member 32, and the end plate 36 has a single cylindrical shape as a whole due to the outer peripheral surfaces of these components. Furthermore, a circumferential groove 42 extending in the circumferential direction is formed on the outer peripheral surface 40 of the end plate. The circumferential groove 42 may be provided over the entire circumference.

  A metal wire, for example, a steel wire (hereinafter referred to as a steel wire 44) is wound around the rotor 10 from one end portion to the other end portion in the rotor axial direction along the outer peripheral surface thereof. The steel wire 44 is overlapped and wound in the circumferential groove 42 of one end plate 36, and then spirally wound along the outer peripheral surface 40 of the end plate toward the other end. Even if the steel wire 44 shifts from the outer peripheral surface of the end plate 36 to the outer peripheral surface of the rotor core 18, the steel wire 44 is spirally wound around the outer peripheral surface of the rotor core 18 and the outer peripheral surface 34 of the coil member in the same manner as before. It is wound around the outer peripheral surface 40 of the end plate 36. Finally, it is wound in an overlapping manner in the circumferential groove 42. Both ends of the steel wire 44 can be fixed by, for example, injecting resin into the circumferential groove 42. Moreover, you may make it fix the end part of the steel wire 44 to the end plate 36 with a volt | bolt or welding. In the rotor 10, the steel wire 44 is wound in a single portion at a portion other than the inside of the circumferential groove 42.

  Since the steel wire 44 is subjected to multiple winding at the end of the rotor 10, the tension acting on the steel wire 44 is supported by the friction between the steel wires of the multiple wound portions. Thereby, the stress at the end of the steel wire 44 is reduced, and the resistance to breakage of the steel wire 44 is improved. Since the steel wire 44 is wound from the outside, the coil member 32 is pressed from the outside by the steel wire 44 and is prevented from being scattered by centrifugal force. Moreover, since the steel wire 44 is thinner than surrounding the outer side of the rotor 10 with a cylindrical member, eddy currents generated in the steel wire 44 are suppressed.

  As shown in FIG. 1, the steel wires 44 may be tightly wound so that the adjacent steel wires 44 are in close contact with each other, or the adjacent steel wires 44 may be wound with a gap therebetween. The steel wire 44 can be a round wire having a diameter of about 0.2 to 1.0 mm or a square wire having a cross-sectional area equivalent to this.

  The steel wire 44 can be fixed by welding at the tip of the magnetic pole 22. As shown in FIGS. 3 and 4, a steel wire 44 is welded to the tip of every other magnetic pole 22 in the magnetic poles 22 arranged in the circumferential direction (indicated by reference numeral 46). The reason why the welded portions 46 are used as every other magnetic pole 22 is to reduce the eddy current generated in the steel wire 44. When welding is performed, a closed circuit 48 as shown in FIG. 4 is formed by the parallel steel wire 44 and the two welded portions 46. When the welded portions 46 are formed on every other magnetic pole 22, the magnetic flux interlinking with the closed circuit 48 includes the opposite direction and is canceled out. That is, the magnetic flux interlinking with the closed circuit 48 includes a magnetic flux penetrating the paper surface of FIG. 4 from the front toward the ridge and a magnetic flux penetrating from the heel toward the front, and these cancel out to generate eddy currents. Is suppressed.

  5-8 is a figure which shows the principal part of the rotor 60 of the rotary electric machine which is other embodiment. The same components as those of the rotor 10 described above are denoted by the same reference numerals and description thereof is omitted. In the rotor 60, a configuration different from the rotor 10 is an end plate 64 of the coil member 62. In the figure, the steel wire wound around the outer periphery of the rotor 60 is omitted for simplicity. In the coil member 62, the coil 66 is disposed on the outer periphery of the rotor 60, and the outer peripheral surface of the coil 66 forms a part of the outer peripheral surface of the rotor 60. Further, the gap between the coil conductors constituting the coil 66, the gap between the coil 66 and the rotor core, and the gap between the coil 66 and the end plate 64 are filled with resin 68. Since the outer peripheral surface of the coil 66 is exposed, the steel wire is directly wound around the outer peripheral surface of the coil 66. Also in this case, the centrifugal force acting on the coil 66 is received by the steel wire, and the scattering of the coil 66 is prevented.

  The end plate 64 is disposed at both ends of the rotor core 18 with a spacer 67 between the end plate 64 and the rotor core 18. The spacer 67 can be made of resin. A fixing bolt 70 for fixing the end of the steel wire is provided on the end surface 72 of the end plate 64 opposite to the rotor core 18. In FIG. 5, the bolt 70 of the front end plate 64 is shown, but the bolt is similarly provided on the rear end plate. A through hole 76 is formed from the outer peripheral surface 74 of the end plate 64 toward the end surface 72. The steel wire 44 passes from the outer peripheral surface of the rotor 60 toward the end surface 72 of the end plate through the through hole 76. On the end surface 72 of the end plate, the steel wire 44 is wound around the two fixing bolts 70 in an S shape as shown in FIG. 6 or FIG. 7, and is fixed between the fixing bolt 70 and the end plate. The other end of the steel wire 44 is similarly fixed. Further, instead of fixing with the fixing bolt 70, the end of the steel wire 44 may be fixed to the end surface 72 of the end plate by welding.

  A circumferential groove 78 extending in the circumferential direction is formed on the outer peripheral surface 74 of the end plate 64. The circumferential groove 78 may be provided over the entire circumference. The cross-sectional shape of the circumferential groove 78 is well shown in FIG. A side surface 80 of the circumferential groove 78 on the rotor core 18 side is an inclined surface. The angle of inclination is, for example, 30 ° with respect to the rotor axis. In FIG. 8, the order of winding the steel wire is indicated by arrows 82 and 83.

  In FIG. 8, the end plate 64 arranged on the left and right and the configuration related to the end plate will be described by further adding L (left) and R (right) to the reference in order to distinguish left and right. The steel wire reaches the bottom of the circumferential groove 78L through the through hole 76L from the end face 72L of the left end plate 64L. The steel wire is laminated in a plurality of layers, for example, three layers in the circumferential groove 78L. After being overlapped and wound in the circumferential groove 78L, the steel wire goes to the opposite end plate 64R while being spirally wound along the outer peripheral surface of the rotor core 18. In the end plate 64R, the steel wire is wound along the inclined side surface 80R of the circumferential groove 78R toward the bottom surface of the circumferential groove 78R, and in the circumferential groove 78R, for example, three layers are formed. Is laminated. Thereafter, the steel wire passes from the outer peripheral surface 74R of the end plate through the through hole 76L and reaches the end surface 72R, where the end is fixed by the fixing bolt 70 as described above. In this way, one steel wire 44 is continuous from one end of the rotor to the other end.

  Individual features employed in the rotor 60 can be employed independently in the rotor 10. For example, as the circumferential groove of the rotor 10, a groove whose side surface on the rotor core side employed in the rotor 60 is an inclined surface can be employed. Further, the steel wire can be directly wound around the outer peripheral surface of the coil.

  FIG. 9 is a diagram showing another fixing method of the steel wire end. The same components as those of the rotors 10 and 60 described above are denoted by the same reference numerals, and the description thereof is omitted. A fixing bolt 86 is screwed into a screw hole formed in the outer peripheral surface 84 of the end plate 82. The end of the steel wire 44 is wound around the neck portion of the fixing bolt 86. By tightening the fixing bolt 86, the steel wire 44 is sandwiched between the head of the bolt and the outer peripheral surface 84 of the end plate and held. Further, instead of fixing with the fixing bolt 86, the end of the steel wire 44 may be fixed to the outer peripheral surface 84 of the end plate by welding.

  FIG. 10 is a view showing a rotor 90 of still another embodiment. FIG. 10 is a cross-sectional view including the rotation axis of the rotor. A configuration different from the rotors described above is a coil 92 and an end plate 94. The components common to the above-described rotors are given the same reference numerals and description thereof is omitted. Moreover, about the steel wire, illustration is abbreviate | omitted for the simplification.

  The coil 92 has a coil end, that is, a portion that protrudes from the end surface in the axial direction of the rotor core 18, and an inclined portion 96 that is inclined toward the rotor shaft 12 or the rotor axis. The end plate 94 is disposed so as to surround the inclined portion 96, and includes a holding portion 98 that abuts on the outer peripheral side of the inclined portion 96 and prevents the coil 92 from jumping out due to centrifugal force. Further, the holding portion 98 may hold the inclined portion 96 of the coil end via another member. When the coil end of the coil 92 is inclined inward, the thickness of the holding portion 98 in the radial direction increases. By increasing the thickness, it becomes easy to provide the circumferential groove 100 for winding the steel wire on the holding portion 98. At least a part of the circumferential groove 100 can be positioned on the holding portion 98 positioned on the radially outer side of the inclined portion 96 of the coil end. The illustrated circumferential groove 100 has a slope on the side surface on the rotor core 18 side, but it may be a groove having a square cross-sectional shape instead of a slope.

  A plurality of steel wires 44 may be wound at the same time. FIG. 11 shows a state in which three steel wires 44a, 44b, and 44c are wound in parallel at the same time. The plurality of conductive wires may be individually sent to the outer peripheral surface of the rotor core and juxtaposed on the outer peripheral surface. Alternatively, the plurality of conductive wires may be arranged in parallel in one direction in advance and connected as a strip-shaped bundle, and the strip-shaped bundle may be sent to the outer peripheral surface of the rotor core and wound around the rotor core. Further, the steel wire 44 may be wound around the rotor core. In this case, as shown in FIG. 12, the first layer steel wire 44e is in the opposite direction from one end of the rotor to the other end, and the second layer steel wire 44d is in the opposite direction from the other end to one end. It is preferable to wind it around.

  In the rotors 10, 60, and 90, the object of scattering prevention due to centrifugal force is a coil or a coil component, but the present invention can also be applied to scattering prevention targeting other parts.

  FIG. 13 is a cross-sectional view including the rotor axis of the rotor 110 having permanent magnets disposed on the surface. The same components as those in the above-described embodiment are denoted by the same reference numerals, and the description thereof is omitted. The rotor core 112 is formed in a cylindrical shape by laminating thin disc-shaped electromagnetic steel plates. A permanent magnet 114 is disposed on the outer periphery of the rotor core 112. The permanent magnets 114 can be arranged at intervals in the circumferential direction, and a spacer 116 made of a nonmagnetic material is disposed between the permanent magnets 114. The spacer 116 can be made of resin. A cylindrical side surface is formed by the outer peripheral surface of the permanent magnet 114 and the outer peripheral surface of the spacer 116. Further, the length of the permanent magnet 114 and the spacer 116 in the rotor axial direction can be made equal to the length of the rotor core 112 in the same direction, whereby a cylinder is formed by the rotor core 112, the permanent magnet 114 and the spacer 116. The permanent magnets 114 can also be arranged without gaps in the circumferential direction.

  End plates 118 are disposed on both outer sides of the rotor core 112 in the rotor axial direction. The end plate 118 can be disposed in contact with the rotor core 112. The outer peripheral surface 120 of the end plate 118 forms a cylindrical side surface that is the same as the cylindrical side surface formed by the outer peripheral surface of the permanent magnet 114. Therefore, the outer peripheral surface 120 of the end plate and the outer peripheral surface of the permanent magnet 114 are connected without any step. Similarly, the outer peripheral surface of the spacer 116 can be connected to the outer peripheral surface 120 of the end plate without any step. A circumferential groove 122 extending in the circumferential direction is formed on the outer peripheral surface 120 of the end plate.

  A steel wire 44 is wound around the rotor 110 from one end portion in the rotor axial direction to the other end portion along the outer peripheral surface thereof. The steel wire 44 is overlapped and wound in the circumferential groove 122 of one end plate 118, and then spirally wound toward the other end along the outer peripheral surface 120 of the end plate. The steel wire 44 moves from the end plate 118 to the outer peripheral surface of the permanent magnet 114 and the spacer 116, and is similarly spirally wound here and is further wound around the outer peripheral surface 120 of the other end plate 118. Finally, it is wound in the circumferential groove 122 in an overlapping manner. Thus, one steel wire is continuous from one end of the rotor to the other end. Both ends of the steel wire 44 can be fixed by injecting resin into the circumferential groove 122, for example. Moreover, you may make it fix the edge part of the steel wire 44 to the end plate 118 with a volt | bolt or welding. In the rotor 10, the steel wire 44 is wound in a single portion at portions other than the inside of the circumferential groove 122. As a fixing method using bolts, a method of fixing at the end face of the end plate shown in FIGS. 5 to 7 or a method of fixing at the outer peripheral face of the end plate shown in FIG. 9 can be adopted.

  The circumferential groove 122 can be a side surface inclined on the side surface on the rotor core 112 side, like the circumferential groove 78 described in FIG. Moreover, you may make it wind several steel wires 44 simultaneously. As described above, for example, as shown in FIG. 11, three steel wires 44a, 44b, 44c may be juxtaposed and wound simultaneously. The plurality of conductive wires may be individually sent to the outer peripheral surface of the rotor core and juxtaposed on the outer peripheral surface. Further, the plurality of conductive wires may be arranged in advance in one direction and combined as a band-shaped bundle, and the band-shaped bundle may be sent to the outer peripheral surface of the rotor core and wound around the rotor core. Further, the steel wire 44 may be wound around the rotor core. In this case, as shown in FIG. 12, the first steel wire 44e is alternately from one end of the rotor to the other end, and the second steel wire 44d is alternately from the other end to one end. It is preferable to wind.

  10, 60, 90, 110 rotor, 12 rotor shaft, 18, 112 rotor core, 22 magnetic pole, 26, 66, 92 coil, 28 coil end, 30, 68 resin, 32, 62 coil member, 34 outer peripheral surface of coil member, 36, 64, 82, 94, 118 End plate, 40, 74, 84, 120 End plate outer peripheral surface, 42, 78, 100, 122 Circumferential groove, 44 Steel wire, 46 Welded part, 70 Fixing bolt, 80 turns Inclined side of directional groove, 98 holding portion, 114 permanent magnet.

Claims (13)

A rotor of a rotating electric machine,
A rotor core having magnetic poles arranged in the circumferential direction;
A coil member including a coil mounted on the magnetic pole so as to go around the magnetic pole;
A metal wire wound spirally from one end of the rotor axial direction to the other end along the outer peripheral surface of the rotor core and the coil member;
Have
The metal wire is wound in an overlapping manner at both ends of the rotor in the axial direction of the rotor,
Rotor for rotating electrical machines. The rotor of the rotating electrical machine according to claim 1,
The rotor core is disposed on both outer sides in the rotor axial direction, and the outer peripheral surface has an end plate that forms a common cylindrical side surface with the outer peripheral surface of the rotor core and the outer peripheral surface of the coil member,
A circumferential groove extending in the circumferential direction is formed on the outer peripheral surface of the end plate, and the metal wire is overlapped and wound in the circumferential groove.
Rotor for rotating electrical machines. The rotor of the rotating electrical machine according to claim 2,
The coil end of the coil has a portion inclined toward the rotor axis,
The end plate has a portion surrounding the inclined portion of the coil end,
Rotor for rotating electrical machines.   4. The rotor of a rotating electrical machine according to claim 3, wherein at least a part of the circumferential groove is formed in a portion of the end plate surrounding the inclined portion of the coil end.   5. The rotor of a rotating electrical machine according to claim 2, wherein the circumferential groove of the end plate has a sloped side surface on the rotor core side.   It is a rotor of the rotary electric machine of any one of Claims 1-5, Comprising: The said metal wire rod is a rotor of a rotary electric machine by which multiple pieces are wound in parallel.   It is a rotor of the rotary electric machine of any one of Claims 1-5, Comprising: The said metal wire is a wire rod wound from one end of a rotor to the other end, and said one from said other end. A rotor of a rotating electrical machine including a wire wound around an end.   The rotor for a rotating electrical machine according to any one of claims 1 to 7, wherein the metal wire is fixed to the tip of every other magnetic pole in the circumferential direction by welding. A rotor of a rotating electric machine,
Rotor core,
A permanent magnet mounted on the outer peripheral surface of the rotor core;
A metal wire wound spirally from one end in the rotor axial direction to the other end along the outer peripheral surface of the permanent magnet,
Have
The metal wire is wound in an overlapping manner at both ends of the rotor in the axial direction of the rotor,
Rotor for rotating electrical machines. A rotor of a rotating electrical machine according to claim 9,
The rotor core has end plates that are arranged on both outer sides in the rotor axial direction, and the outer peripheral surface forms a common cylindrical side surface with the outer peripheral surface of the permanent magnet,
A circumferential groove extending in the circumferential direction is formed on the outer peripheral surface of the end plate, and the metal wire is overlapped and wound in the circumferential groove.
Rotor for rotating electrical machines.   The rotor of a rotating electrical machine according to claim 10, wherein the circumferential groove of the end plate has a sloped side surface on the rotor core side.   It is a rotor of the rotary electric machine of any one of Claims 9-11, Comprising: The said metal wire rod is a rotor of a rotary electric machine by which multiple pieces are wound in parallel.   It is a rotor of the rotary electric machine of any one of Claims 9-12, Comprising: The said metal wire is a wire rod wound from one end of a rotor to the other end, and said one from said other end. A rotor of a rotating electrical machine including a wire wound around an end.

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