JP6656338B1 - Method for manufacturing rotor of rotating electric machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a manufacturing method of a rotor of a rotary electric machine, which can more accurately position a permanent magnet with respect to a claw-shaped magnetic pole. SOLUTION: A magnet attaching step of attaching a permanent magnet 33 to a magnet holder 34, and after the magnet attaching step, a flange portion 133 of a claw-shaped magnetic pole 131 is sandwiched between the permanent magnet 33 and a wing portion 343 of the magnet holder 34. A temporary magnet fixing step of temporarily fixing the permanent magnet 33 to the claw-shaped magnetic pole 131 is provided, and in the temporary magnet fixing step, the permanent magnet 33 and the wing portion 343 sandwich the flange portion 133, so that the permanent magnet 33 is fixed. It is pushed toward the part 133. [Selection diagram] FIG.

Description

  The present invention relates to a method for manufacturing a rotor of a rotating electric machine.

  BACKGROUND ART Conventionally, there has been known a stator of a rotating electric machine in which a permanent magnet is held in a claw-shaped magnetic pole by inserting a permanent magnet into a groove formed on a side surface of the claw-shaped magnetic pole (for example, see Patent Document 1).

JP-T-2009-538107

  However, since the permanent magnet is inserted into the groove, the dimension of the groove in the radial direction of the rotor is larger than the dimension of the permanent magnet. Thus, there has been a problem that the permanent magnet cannot be accurately positioned with respect to the claw-shaped magnetic pole in the radial direction of the rotor.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a rotating electric machine that can more accurately position a permanent magnet with respect to a claw-shaped magnetic pole in a radial direction of a rotor. A method for manufacturing a rotor is provided.

In the method of manufacturing a rotor for a rotating electric machine according to the present invention, a magnet mounting step of mounting a permanent magnet to a magnet holder, and after the magnet mounting step, the permanent magnet and the permanent magnet in the magnet holder are provided radially outside the permanent magnet. A temporary fixing step of temporarily fixing a permanent magnet to the claw-shaped magnetic pole with a claw-shaped magnetic pole flange interposed between the wing and the wing. only sandwiched by the elastic force of the wing portion, pressed permanent magnet toward the flange portion, the permanent magnet you close contact with the flange portion.

  According to the method for manufacturing a rotor of a rotating electric machine according to the present invention, the permanent magnet and the wing of the magnet holder sandwich the flange of the claw-shaped magnetic pole, so that the permanent magnet is pressed toward the flange. This makes it possible to more accurately position the permanent magnet with respect to the claw-shaped magnetic pole in the radial direction of the rotor.

FIG. 2 is a front view showing the rotating electric machine according to Embodiment 1 of the present invention. FIG. 2 is a sectional view taken along the line II-II in FIG. 1. FIG. 3 is a side view showing the rotor of FIG. 2. FIG. 4 is an enlarged view showing a main part of the rotor of FIG. 3. FIG. 4 is a perspective view showing a permanent magnet before being disposed between a pair of claw-shaped magnetic poles of FIG. 3. FIG. 6 is a sectional view taken along the line VI-VI in FIG. 4. FIG. 7 is a sectional view taken along the line VII-VII in FIG. 4. FIG. 8 is a diagram showing a state before the permanent magnet and the magnet holder of FIG. 7 are arranged between a pair of claw-shaped magnetic poles. FIG. 7 is a diagram showing a state in which the wings of FIG. 4 is a flowchart illustrating a method for manufacturing the rotor of FIG. 3. FIG. 14 is a perspective view showing a main part of a stator of the rotating electric machine according to Embodiment 2 of the present invention. FIG. 13 is a cross-sectional view illustrating a stator of a rotating electric machine according to a third embodiment. FIG. 12 is a cross-sectional view illustrating a state in which the protrusion of FIG. 11 is crushed.

Embodiment 1 FIG.
Hereinafter, a rotary electric machine according to Embodiment 1 of the present invention will be described in detail with reference to the drawings. FIG. 1 is a front view showing a rotating electric machine according to Embodiment 1 of the present invention. FIG. 2 is a sectional view taken along the line II-II in FIG. In the figure, the rotating electric machine 1 includes a rotating electric machine main body 2 and a control device 3 mounted on the rotating electric machine main body 2. The rotating electric machine 1 is a controller-integrated rotating electric machine. The rotating electric machine 1 is mounted on, for example, a vehicle driven by an internal combustion engine. In the first embodiment, rotating electric machine 1 is an AC generator motor with a brush. The AC generator motor with a brush is an AC motor generator. In the following description, the same or corresponding parts are denoted by the same reference numerals in the respective drawings.

  The rotating electric machine main body 2 supports a cylindrical stator 4, a rotor 5 disposed in an inner space of the stator 4 and rotatable with respect to the stator 4, and each of the stator 4 and the rotor 5. And a case 6. Hereinafter, in this example, the axial direction is the axial direction about the rotor 5, the circumferential direction is the circumferential direction about the rotor 5, and the radial direction is the radial direction about the rotor 5. .

  The case 6 includes a front bracket 7, a rear bracket 8 provided to face the front bracket 7 in the axial direction, and a fastening member 9 provided between the front bracket 7 and the rear bracket 8. I have.

  The front bracket 7 and the rear bracket 8 sandwich the stator 4 in the axial direction. The fastening member 9 fastens the front bracket 7 and the rear bracket 8 in a direction in which the front bracket 7 and the rear bracket 8 approach each other in the axial direction. The stator 4 is held by the front bracket 7 and the rear bracket 8 by fastening the front bracket 7 and the rear bracket 8 in the axial direction. The fastening member 9 is composed of a plurality of bolts.

  Each of the front bracket 7 and the rear bracket 8 is made of metal. Each of the front bracket 7 and the rear bracket 8 is formed in a bowl shape. At the bottom of each of the front bracket 7 and the rear bracket 8, a plurality of intake holes (not shown) are formed. A plurality of exhaust holes (not shown) are formed in shoulder portions of the front bracket 7 and the rear bracket 8, respectively.

  The stator 4 has a cylindrical stator core 10 and a stator winding 11 provided on the stator core 10. The stator core 10 is sandwiched between the front bracket 7 and the rear bracket 8. The front bracket 7, the stator core 10 and the rear bracket 8 are fastened to each other by a fastening member 9. As a result, the stator core 10 is held by the front bracket 7 and the rear bracket 8. The stator winding 11 is an armature winding of the rotating electric machine 1. The stator winding 11 has a plurality of winding portions. The stator winding 11 includes one or a plurality of three-phase AC windings in which a plurality of winding portions are connected to each other by a star connection or a delta connection.

  The rotor 5 is provided on a rotor shaft 12 extending in the axial direction, a pair of rotor cores 13 fixed to an intermediate portion of the rotor shaft 12 in the axial direction, and a pair of rotor cores 13. And a rotor winding 14. The rotor winding 14 is a field winding of the rotating electric machine 1. The pair of rotor cores 13 constitute a so-called claw-pole type magnetic pole. The rotor core 13 is made of iron. Each of the pair of rotor cores 13 has eight claw-shaped magnetic poles 131. The eight claw-shaped magnetic poles 131 are arranged side by side at an equiangular pitch in the circumferential direction. The claw-shaped magnetic pole 131 of one of the pair of rotor cores 13 extends in the axial direction toward the other rotor core 13. The claw-shaped magnetic pole 131 of the other rotor core 13 of the pair of rotor cores 13 extends in the axial direction toward the one rotor core 13. The claw-shaped magnetic poles 131 of one rotor core 13 and the claw-shaped magnetic poles 131 of the other rotor core 13 are alternately arranged at intervals in the circumferential direction. The rotor winding 14 is surrounded by a pair of rotor cores 13.

  The rotating electric machine main body 2 has a pair of bearings 15 provided on each of the front bracket 7 and the rear bracket 8. The rotor shaft 12 passes through the front bracket 7 and the rear bracket 8. The rotor shaft 12 is rotatably supported by the front bracket 7 and the rear bracket 8 via a pair of bearings 15.

  The outer peripheral portion of the rotor core 13 is arranged to face the inner peripheral portion of the stator 4 with a gap of a set size. The rotating electric machine body 2 has a pair of cooling fans 16 provided at both axial ends of the rotor core 13. Each of the pair of cooling fans 16 is fixed to the rotor core 13. Thereby, each of the pair of cooling fans 16 rotates together with the rotor 5 when the rotor 5 rotates.

  The rotating electrical machine main body 2 has a pulley 17 provided at an axial end of the rotor shaft 12 on the front bracket 7 side. The pulley 17 is fixed to the rotor shaft 12. A transmission belt (not shown) that is interlocked with a rotation shaft of an internal combustion engine mounted on the vehicle is wound around the pulley 17. Power is transmitted and received between the rotating electric machine 1 and the internal combustion engine via the transmission belt.

  The rotating electrical machine main body 2 has a rotating position detecting device 18 provided on a portion of the rotor shaft 12 on the rear bracket 8 side. The rotation position detecting device 18 generates a signal corresponding to the rotation of the rotor shaft 12.

  The rotating electrical machine body 2 has a pair of slip rings 19 provided on a portion of the rotor shaft 12 on the rear bracket 8 side. Each of the pair of slip rings 19 is electrically connected to the rotor winding 14. Each of the pair of slip rings 19 is fixed to the rotor shaft 12. Each of the pair of slip rings 19 is formed in a ring shape surrounding the outer peripheral portion of the rotor shaft 12. Each of the pair of slip rings 19 is formed of a conductive member.

  The rotating electric machine main body 2 corresponds to each of a pair of brushes 20 made of a conductive member, a brush holder 21 fixed to the rear bracket 8 and holding the pair of brushes 20, and a pair of brushes 20. And a pair of springs 22 provided. The pair of brushes 20 contact the pair of slip rings 19 one by one. The pair of springs 22 push the pair of brushes 20 in a direction in which the brushes 20 come into contact with the slip ring 19. The slip ring 19 slides with respect to the brush 20 as the rotor 5 rotates. The field current is supplied to the rotor winding 14 via the brush 20 and the slip ring 19.

  The control device 3 controls the two power module components 23 electrically connected to the stator winding 11, and adjusts a DC current from a vehicle-mounted battery as a DC power supply to generate a rotor current 14 as a field current. And one field circuit section 24 for supplying the power to the motor.

  The control device 3 includes one control circuit unit 25 that controls each of the power module unit 23 and the field circuit unit 24, and a control unit 25 that controls the power module unit 23 and the field circuit unit 24 and the control circuit unit 25. And two signal relay devices 26 for transmitting and receiving control signals between them.

  The control device 3 has a connector 27 for external connection connected to the control circuit unit 25. Signals are transmitted and received between the control circuit unit 25 and the external device via the connector 27. An external device that transmits and receives signals to and from the control circuit unit 25 includes, for example, a control unit of an internal combustion engine.

  The control device 3 is fixed to an axial end of the rear bracket 8. The rotating electric machine main body 2 has a cover 28 that covers the control device 3. The cover 28 is made of an insulating resin. In FIG. 1, the cover 28 is not shown.

  The control circuit section 25 has a control board 251 including a control circuit, and a resin section 252 for protecting the control board 251. A signal from the rotational position detecting device 18 is transmitted to the control circuit unit 25 via the signal relay device 26. Further, a signal from an external device is transmitted to the control circuit unit 25 via the connector 27. The control circuit unit 25 controls the switching of the switching elements provided in each of the field circuit unit 24 and the power module assembly 23 based on the signal from the rotational position detecting device 18 and the signal from the external device.

  The field circuit unit 24 is configured from electronic components. As an electronic component constituting the field circuit unit 24, a switching element molded with a molding resin is exemplified. The switching of the field circuit unit 24 is controlled by the control circuit unit 25. Thereby, the field current supplied to the rotor winding 14 is adjusted.

  The control device 3 has a heat sink 29 provided in the field circuit unit 24. The heat sink 29 has a cooling fin 291. The field current adjusted by the field circuit unit 24 is supplied to the rotor winding 14. As a result, a DC magnetic field is generated in the rotor winding 14. The magnetic flux in the DC magnetic field generated in the rotor winding 14 flows from one rotor core 13 of the pair of rotor cores 13 to the other rotor core 13. Specifically, the magnetic flux flows from the claw-shaped magnetic pole 131 of the one rotor core 13 to the claw-shaped magnetic pole 131 of the other rotor core 13. At this time, the claw-shaped magnetic pole 131 of the one rotor core 13 and the claw-shaped magnetic pole 131 of the other rotor core 13 are adjacent to each other in the circumferential direction. When a magnetic flux flows from one claw-shaped magnetic pole 131 to the other claw-shaped magnetic pole 131, the magnetic flux links with the stator winding 11.

  Each of the two power module components 23 having the same configuration has a power module 30. The power module 30 has a power conversion circuit composed of six switching elements. The power conversion circuit functions as an inverter circuit that converts a DC current from a battery into an AC current and supplies the AC current to the stator winding 11. In addition, the power conversion circuit functions as a converter circuit that converts an AC current from the stator winding 11 into a DC current, charges a battery, and supplies the vehicle-mounted device with the DC current. Examples of the six switching elements included in the power conversion circuit include a semiconductor switching element such as a power transistor, a MOSFET (Metal Oxide Semiconductor Field Effect Transistor), and an IGBT (Insulated Gate Bipolar Transistor). Each of the two power module components 23 forms a three-phase power conversion circuit corresponding to the two sets of armature windings on a one-to-one basis.

  The signal relay device 26 is provided on the signal relay member 31 electrically connected to each of the power module structure 23 and the field circuit unit 24, and is provided on the signal relay member 31 and connected to the control circuit unit 25. And a signal relay connection portion 32. Transmission and reception of signals between the power module component 23 and the field circuit unit 24 and the control circuit unit 25 are performed via the signal relay device 26.

  Next, the rotor 5 according to Embodiment 1 of the present invention will be described in detail. FIG. 3 is a side view showing the rotor 5 of FIG. FIG. 4 is an enlarged view showing a main part of the rotor 5 of FIG. The claw-shaped magnetic poles 131 of the pair of rotor cores 13 are alternately arranged in the circumferential direction. A gap is formed in the circumferential direction between a pair of claw-shaped magnetic poles 131 adjacent in the circumferential direction. The rotating electrical machine main body 2 has a permanent magnet 33 provided in a gap between a pair of claw-shaped magnetic poles 131 adjacent in the circumferential direction. Thereby, magnetic flux is more reliably transferred between the claw-shaped magnetic pole 131 and the stator 4.

  FIG. 4 shows only the claw-shaped magnetic pole 131 and the permanent magnet 33. The three claw-shaped magnetic poles 131 arranged in the circumferential direction are referred to as a first claw-shaped magnetic pole 131a, a second claw-shaped magnetic pole 131b, and a third claw-shaped magnetic pole 131c, respectively. The permanent magnet 33 provided between the first claw-shaped magnetic pole 131a and the second claw-shaped magnetic pole 131b is a first permanent magnet 33a, and is provided between the second claw-shaped magnetic pole 131b and the third claw-shaped magnetic pole 131c. The permanent magnet 33 is referred to as a second permanent magnet 33b. In FIG. 4, the direction of arrow A indicates the front side of rotating electric machine 1 to which pulley 17 is attached. The direction of arrow B indicates the rear side of the rotary electric machine 1 to which the control device 3 is assembled.

  FIG. 5 is a perspective view showing the permanent magnet 33 before being disposed between the pair of claw-shaped magnetic poles 131 of FIG. The rotor 5 has a magnet holder 34 for holding a permanent magnet 33. The magnet holder 34 is made of a non-magnetic material. Examples of the non-magnetic material constituting the magnet holder include resin and stainless steel.

  The magnet holder 34 has a holder main body 342 in which a through hole 341 into which the permanent magnet 33 is inserted, and a wing 343 provided in the holder main body 342. The wing portion 343 is arranged so as to face a radially outer surface of the permanent magnet 33. The through hole 341 penetrates the holder main body 342 in the circumferential direction. The permanent magnet 33 is fitted into the through hole 341. By inserting the permanent magnet 33 into the through hole 341, the permanent magnet 33 is attached to the magnet holder 34. The permanent magnet 33 and the magnet holder 34 are fixed to each other. The fixing between the permanent magnet 33 and the magnet holder 34 may be performed by bonding. When the magnet holder 34 is made of resin, the fixing between the permanent magnet 33 and the magnet holder 34 may be performed by integral molding.

  FIG. 6 is a cross-sectional view taken along the line VI-VI in FIG. FIG. 6 shows the magnet holder 34. FIG. 6 shows the first claw-shaped magnetic pole 131a, the second claw-shaped magnetic pole 131b, and the first permanent magnet 33a of FIG. The claw-shaped magnetic pole 131 has a magnetic pole body 132 adjacent to the permanent magnet 33 in the circumferential direction, and a flange 133 provided on a radially outer portion of the magnetic pole body 132 and extending from the magnetic pole body 132 in the circumferential direction. I have. The magnetic pole main body 132 of the first claw-shaped magnetic pole 131a is referred to as a first magnetic pole main body 132a, and the flange 133 of the first claw-shaped magnetic pole 131a is referred to as a first flange 133a. The magnetic pole main body 132 of the second claw-shaped magnetic pole 131b is referred to as a second magnetic pole main body 132b, and the flange 133 of the second claw-shaped magnetic pole 131b is referred to as a second flange 133b. The first flange 133a extends from the first magnetic pole main body 132a toward the second flange 133b. The second flange 133b extends from the second magnetic pole main body 132b toward the first flange 133a.

  The flange 133 is disposed between the permanent magnet 33 and the wing 343. The flange portion 133 restricts the permanent magnet 33 from moving radially outward due to centrifugal force. When the permanent magnet 33 and the wing portion 343 sandwich the flange portion 133, the permanent magnet 33 is pushed toward the flange portion 133. Thereby, the permanent magnet 33 is temporarily fixed to the claw-shaped magnetic pole 131. Further, the permanent magnet 33 is strongly adhered to the flange 133 by the elastic force of the wing 343. The first permanent magnet 33a is in close contact with both the first flange 133a and the second flange 133b. As a result, leakage of magnetic flux between the pair of claw-shaped magnetic poles 131 adjacent in the circumferential direction is suppressed.

  FIG. 7 is a sectional view taken along line VII-VII of FIG. FIG. 8 is a diagram illustrating a state before the permanent magnet 33 and the magnet holder 34 of FIG. 7 are arranged between the pair of claw-shaped magnetic poles 131. The permanent magnet 33 and the magnet holder 34 are inserted between the pair of claw-shaped magnetic poles 131 with the wings 343 bent. At this time, the permanent magnet 33 and the magnet holder 34 move along the flange 133. At this time, the flange 133 is inserted between the permanent magnet 33 and the wing 343.

  The permanent magnet 33 and the magnet holder 34 are stopped at a set position between the pair of claw-shaped magnetic poles 131. At this time, the permanent magnet 33 and the magnet holder 34 sandwich the flange 133 by elastic force due to the bending of the wing 343. Therefore, a frictional force is generated between the flange 133 and the permanent magnet 33 and the magnet holder 34. Thus, when the permanent magnet 33 and the magnet holder 34 are pressed by a force stronger than the frictional force, the permanent magnet 33 and the magnet holder 34 move with respect to the flange 133. On the other hand, the permanent magnet 33 and the magnet holder 34 do not move with respect to the flange 133 in the transport process in the manufacturing process of the rotating electric machine 1.

  After the permanent magnet 33 and the magnet holder 34 are arranged at the set positions between the pair of claw-shaped magnetic poles 131, the wing portion 343 and the flange portion 133 are fixed to each other, and the permanent magnet 33, the magnet holder 34, and the flange are fixed. The part 133 may be temporarily and firmly fixed. As a fixing method between the wing portion 343 and the flange portion 133, adhesion, welding, and the like can be given. In this state, an adhesive is applied between the permanent magnet 33 and the magnet holder 34 and the flange 133, and the adhesive is cured, so that the permanent magnet 33 and the magnet holder 34 are set at the set positions with respect to the flange 133. Fixed to. Examples of the adhesive include varnish.

  FIG. 9 is a diagram showing a state in which the wing portion 343 of FIG. 6 has been cut off. After the adhesive is hardened, unnecessary portions including the wing portions 343 of the magnet holder 34 are scraped off by machining. Thereby, an unnecessary part is removed. As a result, the volume of the magnet holder 34 decreases, and an increase in the weight of the rotor 5 can be suppressed. As for the magnet holder 34, only the holder main body 342 is left.

  In the case where the claw-shaped magnetic pole 131 is manufactured by forging, an unnecessary portion of the claw-shaped magnetic pole 131 in a radially outer portion may be removed at the same time as the wing portion 343. Thereby, the accuracy of the radial dimension of the rotor 5 can be improved, and further, the surface roughness of the radial outer surface of the rotor 5 can be improved.

  Next, a procedure for manufacturing the rotor 5 according to Embodiment 1 of the present invention will be described in detail. FIG. 10 is a flowchart showing a method of manufacturing the rotor 5 of FIG. First, in step S1, a magnet mounting step is performed. In the magnet mounting step, the permanent magnet 33 is mounted on the magnet holder 34 as shown in FIG.

  Thereafter, in step S2, a magnet temporary fixing step is performed. In the magnet temporary fixing step, as shown in FIG. 6, the permanent magnet 33 is fixed to the claw-shaped magnetic pole 131 with the flange 133 of the claw-shaped magnetic pole 131 interposed between the permanent magnet 33 and the wing 343 of the magnet holder 34. Temporarily fix. Thereby, the positioning of the permanent magnet 33 with respect to the claw-shaped magnetic pole 131 is accurately performed in the radial direction.

  Thereafter, in step S3, a permanent magnet fixing step is performed. In the permanent magnet fixing step, the adhesive is applied between the flange 133 and the permanent magnet 33 and the magnet holder 34 using an adhesive, and the adhesive is cured. Thereby, the permanent magnet 33 and the claw-shaped magnetic pole 131 are fixed to each other.

  Then, in step S4, an unnecessary part removing step is performed. In the unnecessary portion removing step, an unnecessary portion including the wing portion 343 of the magnet holder 34 and an unnecessary portion in a radially outer portion of the claw-shaped magnetic pole 131 are removed by machining. Thereby, an increase in the weight of the rotor 5 can be suppressed. Further, the accuracy of the radial dimension of the rotor 5 can be improved, and further, the surface roughness of the radial outer surface of the rotor 5 can be improved. Thus, the procedure for manufacturing the rotor 5 is completed.

  As described above, according to the method of manufacturing rotor 5 of rotary electric machine 1 according to Embodiment 1 of the present invention, permanent magnet 33 and wing 343 sandwich flange 133 in the magnet temporary fixing step. Thereby, the permanent magnet 33 is pushed toward the flange 133. Thereby, the permanent magnet 33 is arranged at the set position with respect to the claw-shaped magnetic pole 131. As a result, it is possible to more accurately position the permanent magnet 33 with respect to the claw-shaped magnetic pole 131 in the radial direction.

  The wing 343 is made of a non-magnetic material. Thereby, the influence on the magnetic flux passing between the pair of claw-shaped magnetic poles 131 adjacent in the circumferential direction can be suppressed.

  In the magnet temporary fixing step, the permanent magnet 33 is pushed toward the flange 133 using the elastic force of the wing 343. Thereby, the permanent magnet 33 can be securely brought into close contact with the flange 133.

  In the magnet temporary fixing step, the wing 343 and the flange 133 are fixed to each other. Thereby, the permanent magnet 33 can be more firmly fixed to the claw-shaped magnetic pole 131.

  In addition, the method for manufacturing the rotor 5 of the rotary electric machine 1 includes a permanent magnet fixing step of fixing the permanent magnet 33 and the claw-shaped magnetic pole 131 to each other using an adhesive after the magnet temporary fixing step. Thereby, the position of the permanent magnet 33 with respect to the claw-shaped magnetic pole 131 can be maintained.

  Further, the method for manufacturing the rotor 5 of the rotating electric machine 1 includes an unnecessary part removing step of removing the wing 343 after the permanent magnet fixing step. Thus, the volume of the magnet holder 34 can be reduced, and an increase in the weight of the rotor 5 can be suppressed.

  In the unnecessary portion removing step, unnecessary portions in the radially outer portion of the claw-shaped magnetic pole 131 are removed together with the wing portion 343. Thereby, the accuracy of the radial dimension of the rotor 5 can be improved, and further, the surface roughness of the radial outer surface of the rotor 5 can be improved.

Embodiment 2 FIG.
FIG. 11 is a perspective view showing a main part of a stator of a rotary electric machine according to Embodiment 2 of the present invention. FIG. 11 shows only the permanent magnet 33 and the magnet holder 34. The magnet holder 34 has a holder body 342, a wing portion 343 provided on a radially outer portion of the holder body 342, and an invitation portion 344 provided at an axial end of the wing portion 343. The invitation part 344 is formed so as to be separated from the holder main body 342 as it is separated from the wing part 343 in the axial direction. Accordingly, when the permanent magnet 33 and the magnet holder 34 are moved along the flange 133, the wing 343 is prevented from being caught on the flange 133. Other configurations are the same as those of the first embodiment.

  As described above, according to the method of manufacturing rotor 5 of rotating electric machine 1 according to Embodiment 2 of the present invention, magnet holder 34 is separated from holder main body 342 as it is separated from wing portion 343 in the axial direction. It has the invitation part 344 formed. Thereby, the magnet temporary fixing step can be easily performed.

Embodiment 3 FIG.
FIG. 12 is a cross-sectional view illustrating the stator of the rotating electric machine according to the third embodiment. The magnet holder 34 has a holder body 342 and a protrusion 345 extending radially outward from a radially outer end of the holder body 342. The permanent magnet 33 and the magnet holder 34 are inserted between a pair of claw-shaped magnetic poles 131.

  FIG. 13 is a cross-sectional view showing a state where the protrusion 345 of FIG. 11 is crushed. In the magnet temporary fixing step, after the permanent magnet 33 and the magnet holder 34 are inserted between the pair of claw-shaped magnetic poles 131, the protrusion 345 is crushed radially inward. Thereby, the protrusion 345 is deformed so that the magnet holder 34 has the wing 343. Other configurations are the same as those of the first embodiment.

  As described above, according to the method for manufacturing the stator of the rotating electric machine according to Embodiment 3 of the present invention, in the magnet temporary fixing step, the protrusions 345 of the magnet holder 34 are deformed to thereby change the wings 343. Form. Thereby, the magnet temporary fixing step can be easily performed.

  REFERENCE SIGNS LIST 1 rotating electric machine, 2 rotating electric machine main body, 3 control device, 4 stator, 5 rotor, 6 case, 7 front bracket, 8 rear bracket, 9 fastening member, 10 stator core, 11 stator winding, 12 rotation Child shaft, 13 rotor core, 14 rotor winding, 15 bearing, 16 cooling fan, 17 pulley, 18 rotation position detecting device, 19 slip ring, 20 brush, 21 brush holder, 22 spring, 23 power module structure, 24 field circuit section, 25 control circuit section, 26 signal relay device, 27 connector, 28 cover, 29 heat sink, 30 power module, 31 signal relay member, 32 signal relay connection section, 33 permanent magnet, 33a first permanent Magnet, 33b second permanent magnet, 34 magnet holder, 131 claw-shaped magnetic pole, 131a first claw-shaped magnetic pole, 1 31b second claw-shaped magnetic pole, 131c third claw-shaped magnetic pole, 132 magnetic pole main body, 132a first magnetic pole main body, 132b second magnetic pole main body, 133, flange, 133a first flange, 133b second flange, 251 control board , 252 resin part, 291 cooling fin, 341 through hole, 342 holder body, 343 wing part, 344 invitation part, 345 protrusion part.

Claims (8)

A magnet mounting step of mounting a permanent magnet to a magnet holder,
After the magnet attaching step, the permanent magnet is claw-shaped by sandwiching a claw-shaped magnetic pole flange between the permanent magnet and a wing provided on the magnet holder in a radial direction outside of the permanent magnet. And a step of temporarily fixing the magnet to the magnetic pole.
In the magnet temporary fixing process, wherein a permanent magnet wing and is viewed clamping the flange portion by the elastic force of the wing portion, the permanent magnet is pushed toward the flange portion, wherein the permanent magnet is the the rotor manufacturing method of the rotary electric machine you close contact with the flange portion.   The method for manufacturing a rotor for a rotating electric machine according to claim 1, wherein the wing portion is made of a non-magnetic material. Wherein in the magnet temporary fixing process, the rotor manufacturing method of the rotating electric machine according to claim 1 or claim 2 for fixing the said wing portion and the flange portion from each other. The magnet according to any one of claims 1 to 3 , further comprising a permanent magnet fixing step of fixing the permanent magnet and the claw-shaped magnetic poles to each other using an adhesive after the magnet temporary fixing step. A method for manufacturing a rotor of a rotating electric machine. The method for manufacturing a rotor of a rotating electric machine according to claim 4 , further comprising an unnecessary part removing step of removing the wings after the permanent magnet fixing step. The method for manufacturing a rotor of a rotating electric machine according to claim 5 , wherein the unnecessary portion removing step removes an unnecessary portion in a radially outer portion of the claw-shaped magnetic pole together with the wing portion. In the magnet temporary fixing step, the said radial direction from the permanent magnets in said magnet holder by deforming the projecting portion provided on the outer portion of claim 1 for forming the wing portion to Claim 6 A method for manufacturing a rotor for a rotary electric machine according to any one of claims 1 to 7. A magnet mounting step of mounting a permanent magnet to a magnet holder,
After the magnet attaching step, the permanent magnet is claw-shaped by sandwiching a claw-shaped magnetic pole flange between the permanent magnet and a wing provided on the magnet holder in a radial direction outside of the permanent magnet. And a step of temporarily fixing the magnet to the magnetic pole.
In the magnet temporary fixing step, the permanent magnet and the wing sandwich the flange, so that the permanent magnet is pressed toward the flange ,
In the magnet temporary fixing process, the by deforming the projecting portion provided on an outer portion for the radial direction than the permanent magnets in the magnet holder, the manufacturing method of the rotor of the rotary electric machine you form said wing portions .

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