JP2018157642A - Rotor for rotary electric machine for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress variance in performance by easily implementing positioning and temporary fixing of permanent magnets in a radial direction until curing an adhesive layer.SOLUTION: A rotor for a rotary electric machine for a vehicle comprises: a pair of rotor cores 13 each including a cylindrical boss part that is press-fitted into a rotor shaft 12, a disc part extending from an axial end of the boss part to the radial outside, and multiple claw-shaped magnetic poles 131 axially extending from an outer peripheral end of the disc part so as to be meshed with one another; multiple permanent magnets 40a and 40b inserted between two claw-shaped magnetic poles 131 that are adjacent in a circumferential direction; a bobbin 50 that is provided around the rotor cores 13; and a rotor winding wire 14 that is provided on the bobbin 50. The bobbin 50 includes a blade part 501 that supports inner radial sides of the permanent magnets 40a and 40b.SELECTED DRAWING: Figure 6

Description

  The present invention relates to a rotor of a vehicular rotating electrical machine such as an AC generator mounted on a vehicle.

Conventionally, for example, in an AC generator mounted on a vehicle, a magnetic flux is reliably transferred between a Randell-type claw-shaped magnetic pole constituting a rotor and a stator. A technique for preventing leakage of magnetic flux between claw-shaped magnetic poles by interposing a magnet is known. Furthermore, a technique for preventing the permanent magnet from jumping out to the outside in the radial direction by a centrifugal force and being damaged is known.
As such a conventional technique, for example, as disclosed in Japanese Patent Application Laid-Open No. 2008-29124 (Patent Document 1), a disk portion of a pair of rotor cores constituting a rotor is provided with a recess, and a claw-shaped magnetic pole A rotor of a vehicular rotating electrical machine that provides a flange on the outer periphery of the rotor and restrains a permanent magnet, or a side surface of the rotor as disclosed in, for example, Japanese Patent Laid-Open No. 2000-134888 (Patent Document 2) 2. Description of the Related Art A rotor of a vehicular rotating electrical machine is known in which a groove is machined and a material softer than a magnet is inserted between a magnet outer peripheral surface and a groove.

JP 2008-29124 A JP 2000-134888 A

  In such a rotor of a vehicular rotating electrical machine, the permanent magnet is generally fixed with an adhesive or the like, but for the purpose of temporarily fixing the permanent magnet until the adhesive layer is cured. The claw-shaped magnetic pole is provided with a recess and a groove. However, since it is necessary to insert a permanent magnet later into such a recess or groove, the radial dimension of the recess or groove needs to be larger than the dimension of the permanent magnet. For this reason, gaps are generated in the radial direction of the concave portions or grooves and the permanent magnets, and the positions of the permanent magnets vary by the gaps. As a result, the magnetic flux that goes out of the rotor changes, so the performance also varies. There is a problem.

  The present invention has been made in view of the problems as described above, and its purpose is to easily realize the radial positioning and temporary fixing of the permanent magnet until the adhesive layer is cured, and the performance variation. An object of the present invention is to provide a rotor of a vehicular rotating electrical machine that can suppress the above-described problem.

A rotor of a vehicular rotating electrical machine according to the present invention includes a cylindrical boss portion press-fitted into a rotor shaft, a disk portion extending radially outward from an axial end portion of the boss portion, and an outer peripheral end of the disk portion. A pair of rotor cores having a plurality of claw-shaped magnetic poles extending in the axial direction so as to mesh with each other;
A plurality of permanent magnets inserted between two claw-shaped magnetic poles adjacent in the circumferential direction;
A bobbin provided around the rotor core;
A rotor winding provided on the bobbin;
With
The bobbin is provided with a wing portion for supporting the inner diameter side of the permanent magnet.

  According to the rotor of the rotating electrical machine for a vehicle according to the present invention, the permanent magnet is temporarily fixed by pressing the permanent magnet against the outer diameter side by the wings provided on the bobbin until the adhesive layer is cured. Temporarily fixed with proper positioning. Thereby, the dispersion | variation in the performance of the rotary electric machine for vehicles can be suppressed.

It is sectional drawing of the rotary electric machine for vehicles which concerns on Embodiment 1 of this invention. It is a front view of the rotary electric machine for vehicles which concerns on Embodiment 1 of this invention. It is a side view which shows the state which has not arrange | positioned the permanent magnet in the rotor of the rotary electric machine for vehicles which concerns on Embodiment 1 of this invention. It is a partial side view of the rotor of the rotary electric machine for vehicles which concerns on Embodiment 1 of this invention. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a circumferential sectional view showing a part of a rotor of a vehicular rotating electrical machine according to a first embodiment of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a circumferential sectional view showing a part of a rotor of a vehicular rotating electrical machine according to a first embodiment of the present invention. It is an axial sectional view showing a part of the rotor of the automotive rotary electric machine according to the first embodiment of the present invention. It is a figure which shows the bobbin for rotor windings of the rotary electric machine for vehicles which concerns on Embodiment 1 of this invention. It is an axial sectional view showing a part of the rotor of the automotive rotary electric machine according to the first embodiment of the present invention. It is a partial side view of the rotor of the rotary electric machine for vehicles which concerns on Embodiment 1 of this invention. It is a figure which shows the bobbin for rotor windings of the rotary electric machine for vehicles which concerns on Embodiment 2 of this invention.

  A preferred embodiment of a rotor of a vehicular rotating electrical machine according to the present invention will be described below with reference to the drawings.

Embodiment 1 FIG.
1 is a cross-sectional view of a rotary electric machine according to Embodiment 1 of the present invention, and shows a cross section viewed from the direction of an arrow along the AA line of FIG. 2 showing a front view. In addition, the front view of FIG. 2 has shown the state which removed the cover of the control apparatus mentioned later.

  1 and 2, a rotating electrical machine 1 is a control device-integrated rotating electrical machine having a rotating electrical machine body 2 and a control device 3 mounted on the rotating electrical machine body 2, and is driven by, for example, an internal combustion engine. It is mounted on a vehicle. In this Embodiment 1, the rotary electric machine 1 is comprised as an alternating current generator motor (AC motor generator) with a brush. In the following description, the same or corresponding parts are denoted by the same reference numerals in each drawing.

  The rotating electrical machine main body 2 includes a cylindrical stator 4, a rotor 5 that is disposed in an inner space of the stator 4, and that can rotate with respect to the stator 4, and a housing that supports the stator 4 and the rotor 5. 6. The housing 6 is mounted between the front bracket 7 and the rear bracket 8 and the front bracket 7 and the rear bracket 8, which are mounted between the front bracket 7 and the rear bracket 8. And a plurality of fastening bolts 9 that fasten 8 in a direction approaching each other. The front bracket 7 and the rear bracket 8 are made of metal. A plurality of intake holes (not shown) are formed on the bottoms of the substantially bowl-shaped front bracket 7 and rear bracket 8, and similarly, exhaust holes (not shown) are formed on the outer shoulders of the front bracket 7 and the rear bracket 8. 2) are formed.

  The stator 4 has a cylindrical stator core 10 sandwiched between a front bracket 7 and a rear bracket 8 and fastened by a fastening bolt 9, and a stator winding 11 provided on the stator core 10. doing. In the first embodiment, the stator winding 11 constitutes an armature winding of the rotating electrical machine 1. The stator winding 11 is composed of one or a plurality of three-phase AC windings each having a star connection or a delta connection.

  The rotor 5 includes a rotor shaft 12 disposed on the axis of the rotor 5, a pair of rotor cores 13 fixed to an intermediate portion in the axial direction of the rotor shaft 12, and these rotor cores 13. It has a rotor winding 14 as an enclosed field winding. The pair of rotor cores 13 constitutes so-called claw pole type magnetic poles in which the rotor 5 side becomes an electromagnet and is generated by the stator winding 11, and are cylindrical bosses that are press-fitted and assembled to the rotor shaft 12. , A disk portion extending radially outward from the axial end of the boss portion, and a plurality of claw-shaped magnetic poles extending in the axial direction so as to mesh with each other from the outer peripheral end of the disk portion. The pair of rotor cores 13 are made of iron, and as will be described later, for example, eight claw-shaped magnetic poles are formed on the outer peripheral edge at an equiangular pitch in the circumferential direction, and project in the axial direction of the rotor shaft 12. The claw-shaped magnetic poles are fixed to the rotor shaft 12 so as to face each other.

  The rotor shaft 12 passes through the front bracket 7 and the rear bracket 8 and is rotatably supported via a pair of bearings 15 provided on each of the front bracket 7 and the rear bracket 8. The outer peripheral portion of the rotor core 13 is opposed to the inner peripheral portion of the stator 4 with a predetermined gap. A pair of cooling fans 16 for blowing air that is rotated integrally with the rotor 5 are provided at both axial ends of the rotor core 13.

  A pulley 17 is fixed to the axial end of the rotor shaft 12 on the front bracket 7 side. The pulley 17 is wound around a transmission belt (not shown) that interlocks with the rotation shaft of an internal combustion engine (not shown) mounted on the vehicle, and between the rotary electric machine 1 and the internal combustion engine via the transmission belt. Send and receive power at. Further, in the vicinity of the axial end of the rotor shaft 12 on the rear bracket 8 side, a rotational position detection sensor 18 that generates a signal corresponding to the rotation of the rotor shaft 12 and the rotor winding 14 are electrically connected. A pair of slip rings 19 is provided. These slip rings 19 are constituted by an annular conductive member surrounding the outer periphery of the rotor shaft 12.

  A pair of brushes 20 made of a conductive material is held by a brush holder 21 fixed to the rear bracket 8 and is urged by a pair of pressing springs 22 in a direction contacting each slip ring 19. The brush 20 and the slip ring 19 are in sliding contact with the rotation of the rotor 5, and a field current is supplied to the stator winding 11 via the brush 20 and the slip ring 19.

  The control device 3 adjusts the DC power from the two power module components 23 electrically connected to the stator winding 11 and an in-vehicle battery (not shown) as a DC power source as a field current. One field circuit unit 24 supplied to the rotor winding 14, one control circuit unit 25 for controlling the power module component 23 and the field circuit unit 24, and the power module component 23 and the field circuit And a signal relay device 26 that transmits and receives control signals between the unit 24 and the control circuit unit 25. As will be described later, the control device 3 is fixed to an end portion in the axial direction of the rear bracket 8 and is covered with a cover 27 made of an insulating resin. In addition, the control circuit unit 25 is provided with an external connection connector 28 for transmitting and receiving signals to and from an external device (for example, an internal combustion engine control unit).

The control circuit unit 25 includes a control board 251 having a control circuit, and the control board 251 is protected by a resin 252. A signal from the rotational position detection sensor 18 is transmitted to the control circuit unit 25 through the signal relay device 26, and a signal from an external device such as an internal combustion engine control unit is transmitted through the connector 28. The control circuit unit 25 performs switching control of switching elements (not shown) provided in the field circuit unit 24 and the power module component 23 based on information by these transmitted signals.

  The field circuit unit 24 is composed of electronic components such as a switching element molded with a mold resin, and the switching element is subjected to switching control by the control circuit unit 25 to adjust the field current to the rotor winding 14. . The field circuit unit 24 is provided with a heat sink 242 provided with cooling fins 241 (see FIG. 2). The field current adjusted by the field circuit unit 24 is supplied to the rotor winding 14 to generate a DC magnetic field in the rotor winding 14. The magnetic flux generated by the DC magnetic field generated in the rotor winding 14 flows from one rotor core 13 to the other rotor core 13 on the peripheral surface of the rotor 5, and between the stator winding 11 and the rotor winding 13. Interlink.

  The two power module components 23 having the same configuration are each provided with a power module 29 including six switching elements constituting a power conversion circuit. The power conversion circuit configured by these switching elements operates as an inverter circuit that converts DC power from a battery (not shown) into AC power and supplies the AC power to the stator winding 11 or the stator winding. 11 operates as a converter circuit that converts AC power from DC to DC power, charges the battery, and supplies DC power to the in-vehicle device. The switching elements constituting the power conversion circuit are configured by semiconductor switching elements such as power transistors, MOSFETs, and IGBTs, for example. The two power module constituting bodies 23 constitute a three-phase power conversion circuit corresponding one-to-one with two sets of armature windings.

  The signal relay device 26 includes a signal relay member 30 electrically connected to each of the power module component 23 and the field circuit unit 24, and a signal provided to the signal relay member 30 and connected to the control circuit unit 25. And a relay connection unit 31. Transmission / reception of signals between the power module component 23 and the field circuit unit 24 and the control circuit unit 25 is performed via the signal relay device 26 configured as described above.

Next, the rotor 5 of the rotating electrical machine 1 will be described in detail.
FIG. 3 is a side view of the rotor 5 with no permanent magnet inserted. The rotor 5 is configured such that the claw-shaped magnetic poles 131 of the pair of rotor cores 13 are engaged with each other. When a field current is applied to the rotor winding 14, the rotor 5 is adjacent to each other in the circumferential direction. One of the claw-shaped magnetic poles 131 is magnetized to the N pole, the other is magnetized to the S pole, and the magnetic flux is transferred in the circumferential direction between the circumferential side surfaces facing each other.

  A gap is formed by a circumferential side surface of the claw-shaped magnetic pole 131 adjacent to one claw-shaped magnetic pole 131. The claw-shaped magnetic pole 131 has a substantially trapezoidal cross section and tapers toward the tip, and has flanges 132a and 132b to be described later on the outer peripheral surface. A permanent magnet, which will be described later, is inserted into a gap formed by a circumferential side surface of the claw-shaped magnetic pole 131 adjacent to one claw-shaped magnetic pole 131. On the disk portion of the rotor core 13, a step portion that is deepened in the axial direction to form a recess is formed so as to be connected to the circumferential side surface and the flange portions 132 a and 132 b. The axial end surface of the permanent magnet is constrained in the axial direction by this stepped portion. The radial dimension of the stepped portion is set to be larger than the radial thickness of the permanent magnet.

In the permanent magnet, one of two circumferential side surfaces forms an N-pole magnetic pole surface, and the other forms an S-pole magnetic pole surface. The permanent magnet has a circumferential surface of the claw-shaped magnetic pole 131 whose side surface of the S pole is magnetized to the S pole so that the side surface of the N pole is opposed to the circumferential side surface of the claw-shaped magnetic pole 131 magnetized to the N pole. It arrange | positions between the two claw-shaped magnetic poles 131 so as to face the direction side surface. This makes it possible to reliably transfer the magnetic flux between the claw-shaped magnetic pole 131 and the stator 4. The permanent magnet is a rare earth magnet such as a neodymium magnet configured in a rectangular parallelepiped, and is incorporated in the rotor 5 such that the longitudinal direction is in the axial direction.

4 is a developed view of a part of the rotor 5 as viewed from the side, and is a simplified view showing only the claw-shaped magnetic pole 131 of FIG. 3 and the permanent magnets 40a and 40b not shown in FIG. In FIG. 4, the claw-shaped magnetic pole 131 is illustrated as claw-shaped magnetic poles 131a to 131c.
As shown in FIG. 4, permanent magnets 40a and 40b are inserted between the claw-shaped magnetic poles 131a to 131c, respectively. The upward direction in the figure is the front side where the pulley 17 (see FIG. 1) is assembled, and the downward direction in the figure is the rear side where the control device 3 (see FIG. 1) is assembled.

  FIG. 5 is a cross-sectional view taken along the line AA of FIG. 4 before the magnet is inserted. A bobbin 50 is provided around the rotor core 13, and a rotor winding 14 is provided thereon. Further, in order to electrically insulate the rotor winding 14 and the claw-shaped magnetic pole 131a, the bobbin 50 is integrally provided with a wing portion 501. Here, if the front side of the wing part 501 is a front side wing part 501f and the rear side is a rear side wing part 501r, the front side wing part 501f extends to a position where the permanent magnet 40a is inserted. The bobbin 50 and the wing part 501 are not necessarily provided integrally, but there is an advantage that manufacturing is facilitated by providing the bobbin 50 and the wing part 501 integrally.

  6 is a cross-sectional view taken along the line AA of FIG. 4 after the magnet is inserted. The permanent magnet 40a is inserted from the front side, and in the process, the front side wing portion 501f of the wing portion 501 provided on the bobbin 50 is pushed and bent. The bobbin 50 is made of a soft and elastic member such as polyamide resin, and the permanent magnet 40a can be easily inserted. After the permanent magnet 40a is inserted, the permanent magnet 40a is pressed toward the outer diameter side by the elastic force of the front wing portion 501f. As described above, the flange portion 132a is formed on the outer peripheral surface of the claw-shaped magnetic pole 131a so that the permanent magnet 40a does not jump out of the outer peripheral surface by centrifugal force. 7 is pressed against the flange 132b formed similarly to the claw-shaped magnetic pole 131b described in FIG. Thereby, the permanent magnet 40a is stably positioned in the radial direction with reference to the flange 132a and the flange 132b. Further, the permanent magnet 40a is temporarily fixed by the elastic force of the front wing portion 501f, and the position does not shift due to its own weight or the like. Thus, the steps of inserting, positioning, and temporarily fixing the permanent magnet 40a can be easily performed by the front wing portion 501f.

  7 is a cross-sectional view taken along the line BB in FIG. The wing portion 501 of the bobbin 50 has a front side wing portion 501f and a rear side wing portion 501r. In FIG. 7, only the front side wing portion 501f supports the permanent magnet 40a, but it is supported only by the rear side wing portion 501r. Alternatively, it may be supported by both the front wing portion 501f and the rear wing portion 501r.

  FIG. 8 is a schematic view of the bobbin 50. In FIG. 8, the structure for pressing the permanent magnet is an example in the case of only the front wing portion 501f, and therefore, only the front wing portion 501f is expanded.

  5, 6, and 7, it is assumed that all the permanent magnets 40 a are inserted from the front side. However, if the rear wing portion 501 r of the rear bobbin 50 extends to the insertion area of the permanent magnet 40 a. If this is the case, the permanent magnet 40a may be caught at the tip of the rear wing 501r, making it difficult to insert the magnet, making it difficult to insert the magnet. Therefore, the magnet can be inserted more easily by supporting the permanent magnet only by the wing portion 501 of the bobbin 50 on the same side as the direction in which the permanent magnet is inserted. Further, the permanent magnet may be inserted from the rear side. In that case, the bobbin 50 preferably has a structure in which only the rear side wing portion 501r presses the permanent magnet.

  FIG. 9 is another example of a cross-sectional view taken along the line BB in FIG. In FIG. 9, a flat protective member 90 made of a non-magnetic material is mounted between the permanent magnet 40a and the flanges 132a and 132b. In the case of FIG. 7, when the permanent magnet 40a is inserted, the permanent magnet 40a is pressed against the outer diameter side by the front wing portion 501f of the bobbin 50. Therefore, for the purpose of protecting the permanent magnet 40a, a protection member 90 made of a non-magnetic material is mounted.

  As described above, according to the rotor of the rotating electrical machine for a vehicle related to the first embodiment, either or both of the front wing 501f and the rear wing 501r of the wing 501 provided on the bobbin 50, or both. Is temporarily fixed by pressing the permanent magnets 40a, 40b against the outer peripheral surfaces of the claw-shaped magnetic poles 131a, 13b, and is positioned in the radial direction with reference to the flanges 132a, 132b of the claw-shaped magnetic pole 131. Therefore, the permanent magnets 40a and 40b are temporarily fixed in an appropriately positioned state until the adhesive layer is cured. Thereby, the dispersion | variation in the performance of the rotary electric machine for vehicles can be suppressed.

Embodiment 2. FIG.
Next, a rotor of a vehicular rotating electrical machine according to a second embodiment of the present invention will be described.
The first embodiment has been described on the assumption that all the permanent magnets are inserted from the same direction on the front side or the rear side. However, in this case, for example, the permanent magnets 40a and 40b shown in FIG. There are permanent magnets whose tracks interfere with each other and cannot be inserted at the same time. In order to solve this problem, the second embodiment enables the simultaneous insertion of the permanent magnet 40a and the permanent magnet 40b by adopting a structure in which the permanent magnets that interfere with the insertion trajectory are inserted from the front side and the rear side, respectively. Is.

  In this case, the shape of the bobbin 50 is different from that of the first embodiment, and the structure is such that the front side wing part 501f presses the permanent magnet inserted from the front side and the rear side wing part 501r presses the permanent magnet inserted from the rear side. desirable. The reason is the same as in the first embodiment. An example of the shape of the bobbin 50 in the second embodiment is shown in FIG. In FIG. 8, the area of only the front wing 501f or the rear wing 501r is expanded, but in FIG. 11, the areas of both the front wing 501f and the rear wing 501r are expanded.

Embodiment 3 FIG.
Next, a rotor of a rotary electric machine for vehicles according to Embodiment 3 of the present invention will be described.
In the first embodiment and the second embodiment, the permanent magnets 40a and 40b are inserted after the rotors 5 are combined together. Although not shown, the third embodiment has a structure in which the permanent magnets 40a and 40b are combined together when the front and rear rotor cores 13 are combined. In this case, in order to hold the permanent magnets 40a and 40b, the bobbin 50 supports the inner diameter side of the six surfaces of the cubic permanent magnet, and the remaining five surfaces are claw-shaped magnetic poles 131 like the flanges 132a and 132b. The permanent magnets 40a and 40b are held by covering with.

  In Embodiment 3, since permanent magnets 40a and 40b are not inserted as in Embodiments 1 and 2, it is not necessary to obtain ease of insertion. Therefore, the wing portion 501 of the bobbin 50 that presses the permanent magnets 40a and 40b may be the front wing portion 501f, the rear wing portion 501r, or both. In the third embodiment, there is an effect that the radial positioning and the ease of temporary fixing can be obtained.

As mentioned above, although the rotor of the rotary electric machine for vehicles which concerns on Embodiment 1 to Embodiment 3 of this invention was demonstrated, this invention can combine each embodiment freely within the scope of the invention, The embodiment can be modified or omitted as appropriate.

DESCRIPTION OF SYMBOLS 1 Rotating electrical machine, 2 Rotating electrical machine main body, 3 Control device, 4 Stator, 5 Rotor, 6 Housing, 7 Front bracket, 8 Rear bracket, 9 Fastening bolt, 10 Stator iron core, 11 Stator winding, 12 Rotor Shaft, 13 Rotor core, 131 Claw-shaped magnetic pole, 131a Claw-shaped magnetic pole, 131b Claw-shaped magnetic pole, 131c Claw-shaped magnetic pole, 14 Rotor winding, 15 Bearing, 16 Cooling fan, 17 Pulley, 18 Rotation position detection sensor, 19 Slip ring, 20 brush, 21 brush holder, 22 pressure spring, 23 power module component, 24 field circuit section, 241 cooling fin, 242 heat sink, 25 control circuit section, 251 control board, 252 resin, 26 signal relay device, 27 Cover, 28 Connector, 29 Power module, 30 Signal relay member, 31 Signal relay connection part, 40a, 40b Permanent magnet, 50 bobbin, 501 wing part, 501f Front side wing part, 501r Rear side wing part, 132a, 132b collar part, 90 Protection member

A rotor of a vehicular rotating electrical machine according to the present invention includes a cylindrical boss portion press-fitted into a rotor shaft, a disk portion extending radially outward from an axial end portion of the boss portion, and an outer peripheral end of the disk portion. A pair of rotor cores having a plurality of claw-shaped magnetic poles extending in the axial direction so as to mesh with each other, a plurality of permanent magnets inserted between two claw-shaped magnetic poles adjacent in the circumferential direction, and the rotor A bobbin provided around the iron core, and a rotor winding provided on the bobbin,
The bobbin is provided with a wing portion for supporting the inner diameter side of the permanent magnet, and only the wing portion on the same side as the insertion direction of the permanent magnet supports the inner diameter side of the permanent magnet .

As described above, according to the rotor of the rotating electrical machine for a vehicle related to the first embodiment, either or both of the front wing 501f and the rear wing 501r of the wing 501 provided on the bobbin 50, or both. Is temporarily fixed by pressing the permanent magnets 40a and 40b against the outer peripheral surfaces of the claw-shaped magnetic poles 131a and 131b , and is positioned in the radial direction with reference to the flanges 132a and 132b of the claw-shaped magnetic pole 131. Therefore, the permanent magnets 40a and 40b are temporarily fixed in an appropriately positioned state until the adhesive layer is cured. Thereby, the dispersion | variation in the performance of the rotary electric machine for vehicles can be suppressed.

Claims (5)

A cylindrical boss portion press-fitted into the rotor shaft, a disk portion extending radially outward from the axial end portion of the boss portion, and a plurality of claws extending in the axial direction so as to mesh with each other from the outer peripheral end of the disk portion A pair of rotor cores having magnetic poles;
A plurality of permanent magnets inserted between two claw-shaped magnetic poles adjacent in the circumferential direction;
A bobbin provided around the rotor core;
A rotor winding provided on the bobbin;
With
A rotor of a rotating electrical machine for a vehicle, wherein the bobbin is provided with a wing portion that supports an inner diameter side of the permanent magnet.   The rotor of a vehicular rotating electrical machine according to claim 1, wherein the bobbin is formed of an elastic member and the wing portion is formed integrally with the bobbin.   3. The rotor of the rotating electrical machine for a vehicle according to claim 1, wherein only the wing portion on the same side as the insertion direction of the permanent magnet supports the inner diameter side of the permanent magnet.   The protective member made of a non-magnetic material is provided between the inner diameter surface of the collar portion formed on the outer peripheral surface of the claw-shaped magnetic pole and the outer diameter side surface of the permanent magnet. The rotor of the rotary electric machine for vehicles as described in any one of Claims 3. 5. The permanent magnet according to claim 1, wherein the permanent magnet is a rectangular parallelepiped, and five surfaces excluding the inner diameter side surface of the permanent magnet are surrounded by a surface constituted by the claw-shaped magnetic poles. The rotor of the rotary electric machine for vehicles as described.

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