JP2012075290A - Rotary electric machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rotary electric machine which can appropriately and easily secure supporting accuracy of a rotor arranged to be confronted with a stator in a radial direction.SOLUTION: A first rotor 10 includes a first rotor core 11 and a first rotor core supporting member 12. A second rotor 20 includes a second rotor core 21. The first rotor core supporting member 12 includes: a first supporting portion 13 supporting the first rotor core 11 from a shaft first direction L1-side; a second supporting portion 14 supporting the first rotor core 11 from a shaft second direction L2-side; and a shaft direction coupling portion 15 coupling the first supporting portion 13 and the second supporting portion 14 on an opposite-stator-side to the second rotor core 21.

Description

  The present invention relates to a rotating electrical machine including a stator, and a first rotor and a second rotor capable of adjusting a circumferential relative position.

  As a conventional technique of the rotating electric machine as described above, for example, there is a technique described in Patent Document 1 below. Hereinafter, in the description of the background art, reference numerals of Patent Document 1 are cited. The rotating electrical machine disclosed in Patent Document 1 includes a stator 1 as an armature and a rotor 2 as a field, and the rotor 2 is a radially outer rotor 100 and a radially inner rotor 100. The inner rotor 200 is accommodated in the inner diameter. The relative position in the circumferential direction between the radially outer rotor 100 and the radially inner rotor 200 can be adjusted by the gear mechanism, and the amount of the effective field magnetic flux linked to the stator coil 302 is adjusted by adjusting the relative position.

  In the configuration described in Patent Document 1, as shown in FIG. 1 of the document, the radially outer rotor 100 includes a first flange-like member 101 and a second member that are separate members on both sides in the axial direction. The flange-like member 106 is supported. Here, the first flange-shaped member 101 is supported by the motor housing 3 via a bearing 401 disposed on one side in the axial direction with respect to the radially outer rotor 100, and the second flange-shaped member 106 is It is supported by the motor housing 3 via a bearing 402 disposed on the other axial side with respect to the rotor 100.

  By the way, in the structure of the said patent document 1, since the radial outer rotor 100 is supported by another member on both sides of an axial direction, it is not easy to ensure the support accuracy of the radial outer rotor 100 appropriately. This is because, in a state where the radially outer rotor 100 is supported, the parallelism between the support member on the one side in the axial direction (first flange-like member 101) and the support member on the other side in the axial direction (second flange-like member 106). This is because it is not easy to appropriately secure the degree and the concentricity. In particular, when the radially outer rotor 100 is formed by laminating a plurality of electromagnetic steel plates as in the configuration of Patent Document 1, the shape of the radially outer rotor 100 is likely to be deformed, and this problem may become significant. There is.

  The radially outer rotor 100 is the rotor 2 that is arranged to face the stator 1 in the radial direction. Therefore, when the support accuracy of the radially outer rotor 100 cannot be ensured appropriately, it is necessary to increase the clearance (air gap) between the stator 1 and the rotor 2, resulting in an increase in the size and output of the rotating electrical machine. The torque will be reduced.

Japanese Patent No. 4147732

  Therefore, it is desired to realize a rotating electrical machine that can easily ensure adequate support accuracy of a rotor that is arranged to face the stator in the radial direction.

  According to the present invention, a characteristic configuration of a rotating electrical machine including a stator, and a first rotor and a second rotor capable of adjusting a relative position in the circumferential direction is such that the first rotor is in a radial direction with respect to the stator. A cylindrical first rotor core disposed so as to face the first rotor core; a first rotor core support member that supports the first rotor core sandwiched from both sides in the axial direction and rotates integrally with the first rotor core; The rotor is on the side opposite the stator with respect to the first rotor core, and is a cylindrical shape that is coaxially arranged with the first rotor core so as to overlap the first rotor core when viewed in the radial direction. The first rotor core support member supports the first rotor core from an axial first direction side that is one side in the axial direction, and the first rotor core in the axial direction, etc. A second support part that is supported from the axial second direction side, and an axial connection part that connects the first support part and the second support part on the anti-stator side with respect to the second rotor core; It is in the point equipped with.

In the present application, the “rotary electric machine” is used as a concept including any of a motor (electric motor), a generator (generator), and a motor / generator functioning as both a motor and a generator as necessary.
Further, in the present application, regarding the arrangement of two members, “overlapping when seen in a certain direction” means that two members when the viewpoint is moved in each direction orthogonal to the line-of-sight direction with the direction as the line-of-sight direction. This means that the viewpoints that appear to overlap each other exist in at least some areas.

  According to this characteristic configuration, the first support part that supports the first rotor core from the axial first direction side and the second support part that supports the first rotor core from the axial second direction side are integrated by the axial connection part. Connected. Therefore, compared with the case where the first support portion and the second support portion are separated from each other, the first support portion and the second support portion in a state where the first rotor core is supported from both axial sides. The parallelism and concentricity can be easily ensured. Therefore, according to this characteristic configuration, it becomes easy to appropriately secure the support accuracy of the first rotor core, which is the rotor core disposed so as to face the stator in the radial direction.

  Here, the axial direction connecting portion is formed in a cylindrical shape and includes an opening that penetrates in the radial direction, and the second rotor is axially on the side opposite to the stator with respect to the axial direction connecting portion. An axially extending portion extending in the radial direction, and a radial connecting portion that passes through the opening in the radial direction and connects the second rotor core and the axially extending portion, wherein the opening has the diameter It is preferable to have a circumferential width larger than a width obtained by adding a circumferential width corresponding to an adjustment range of a circumferential relative position between the first rotor and the second rotor to a circumferential width of the direction connecting portion. is there.

  According to this configuration, the first rotor core and the second rotor core are relatively movable in the circumferential direction while taking the above-described characteristic configuration in which the axial connection portion is disposed on the side opposite to the stator with respect to the second rotor core. The second rotor core can be supported by appropriately arranging the radial connecting portions.

  As described above, in the configuration in which the second rotor includes the axially extending portion and the radial connecting portion, both the first rotor core and the second rotor core include the first rotor core and the second rotor core. It is disposed on the first axial direction side with respect to both of the rotor cores, and is drivingly connected to a common output member via a relative position adjusting mechanism that adjusts a relative position in the circumferential direction between the first rotor core and the second rotor core. The axially extending portion extends from the connecting portion with the radial connecting portion toward the axial first direction side on the anti-stator side with respect to the first rotor core supporting member, and supports the first rotor core It is preferable that the member is connected to the relative position adjusting mechanism on the first axial direction side with respect to a connecting portion between the member and the relative position adjusting mechanism.

  “Drive coupling” refers to a state in which two rotating elements are coupled so as to be able to transmit a driving force, and the two rotating elements are coupled so as to rotate integrally, or the two rotations. It is used as a concept including a state in which elements are connected so as to be able to transmit a driving force via one or more transmission members. Examples of such a transmission member include various members that transmit rotation at the same speed or a variable speed, and include, for example, a shaft, a gear mechanism, a belt, a chain, and the like. In addition, as such a transmission member, an engagement element that selectively transmits rotation and driving force, such as a friction clutch or a meshing clutch, may be included.

  According to this structure, the cross | intersection part of a 1st rotor and a 2nd rotor can be eliminated except the location where a radial direction connection part penetrates an opening part. Therefore, it is possible to simplify the configuration of both the connecting portion between the first rotor core support member and the relative position adjusting mechanism and the connecting portion between the axially extending portion and the relative position adjusting mechanism, thereby reducing costs. In addition, the rotating electrical machine can be reduced in size.

  In the rotating electric machine having each of the above-described configurations, the first rotor core support member is in contact with the first bearing disposed on the first axial direction side with respect to the first rotor core from the second axial direction side. The first supported portion supported in the radial direction by the first bearing, and the first axial direction with respect to the second bearing disposed on the second axial direction side with respect to the first rotor core. A first supported portion integrally formed with the first supported portion and the first supported portion. The first rotor core support member is configured to include a member, and a second member in which the axial connection portion, the second support portion, and the second supported portion are integrally formed. An axial abutment surface that abuts each other in the axial direction at the connecting portion between the one member and the second member, It is preferable that a structure in which the radial abutment surface abutting each other in the direction.

  According to this configuration, since the first support portion and the second support portion of the first rotor core support member are separate members, the work of assembling the first rotor core so as to be sandwiched and supported from both axial sides is facilitated. Can be achieved. Moreover, since the axial contact surface and the radial contact surface are provided at the connecting portion between the first member and the second member, the first member and the second member are both axial and radial. In a properly positioned state, the first member and the second member can be integrated as the first rotor core support member. Therefore, it is possible to appropriately ensure both the degree of coaxiality and the accuracy of the axial interval between the first supported portion constituting the first member and the second supported portion constituting the second member. The support accuracy of the first rotor core can be ensured appropriately.

  Alternatively, the first rotor core support member is in contact with the first bearing disposed on the first axial direction side with respect to the first rotor core from the second axial direction side, and the first bearing In a state where the first supported portion supported in the radial direction by and the second bearing disposed on the second axial direction side with respect to the first rotor core from the first axial direction side, A second supported portion that is supported in the radial direction by the second bearing, the first member having the first supported portion formed thereon, the first supported portion, the axial connection portion, the first A second member formed integrally with the second supported portion, and the first rotor core support member is configured, and a connecting portion between the first member and the second member In addition, there are axial contact surfaces that contact each other in the axial direction and radial contact surfaces that contact each other in the radial direction. It is configured to have kicked preferred.

  According to this configuration, since the first support portion and the second support portion of the first rotor core support member are separate members, the work of assembling the first rotor core so as to be sandwiched and supported from both axial sides is facilitated. Can be achieved. In addition, since the first supported portion supported by the first bearing and the second supported portion supported by the second bearing are integrally formed, the first supported portion and the second supported portion It is easy to appropriately ensure both the degree of coaxiality and the accuracy of the axial interval, and as a result, it becomes even easier to properly secure the support accuracy of the first rotor core.

It is sectional drawing which cut | disconnected a part of drive device which concerns on 1st embodiment of this invention along the axial direction. FIG. 2 is a partially exploded view and a partial cross-sectional view of a first rotor core support member and a second rotor core support member according to a first embodiment of the present invention. It is a schematic diagram which shows the drive device which concerns on 1st embodiment of this invention. It is sectional drawing which cut | disconnected a part of drive device which concerns on 2nd embodiment of this invention along the axial direction. FIG. 6 is a partially exploded view and a partially sectional view of a first rotor core support member and a second rotor core support member according to a second embodiment of the present invention.

1. First Embodiment A first embodiment of a rotating electrical machine according to the present invention will be described with reference to the drawings. Here, the case where the rotating electrical machine according to the present invention is applied to a variable magnetic flux type rotating electrical machine in which the magnetic flux reaching the stator changes according to the relative positions in the circumferential direction of the first rotor and the second rotor will be described as an example. To do. As shown in FIG. 1, the rotating electrical machine 2 according to the present embodiment is an inner rotor type rotating field rotating electrical machine, and a first rotor core for supporting a first rotor core 11 by a first rotor 10. The support member 12 is provided, and the second rotor 20 includes a second rotor core support member 22 for supporting the second rotor core 21. The rotating electrical machine 2 according to this embodiment is characterized by the configuration of the first rotor core support member 12 and the second rotor core support member 22. Hereinafter, the configuration of the rotating electrical machine 2 according to the present embodiment will be described in detail with reference to FIGS. 1 to 3.

  In the following description, unless otherwise specified, the “axial direction L”, “circumferential direction C”, and “radial direction R” are the axes of the first rotor core 11 and the second rotor core 21 that are coaxially arranged (that is, rotation). The axis X) is defined as a reference. In the following description, “axis first direction L1” represents the left side along the axial direction L in FIG. 1, and “axis second direction L2” represents the right side along the axial direction L in FIG. Shall. The “inner diameter direction R1” represents a direction toward the inner side of the radial direction R, and the “outer diameter direction R2” represents a direction toward the outer side of the radial direction R. In the present embodiment, the radial direction R1 side corresponds to the “anti-stator side” in the present invention.

1-1. As shown in FIG. 1, the rotating electrical machine 2 according to the present embodiment includes a stator 3 and a rotor 4 (first rotor 10 and second rotor 20), and the rotating electrical machine 2 includes a case 80. Housed inside. The rotating electrical machine 2 constitutes the driving device 1 together with the relative position adjusting mechanism 50, and is configured to be able to transmit the driving force (synonymous with torque) of the rotating electrical machine 2 to the output shaft 6. In the present embodiment, the output shaft 6 corresponds to an “output member” in the present invention.

  The stator 3 is fixed to the inner surface of the peripheral wall 83 provided in the case 80. The stator 3 includes a stator core 3 a and a coil 3 b wound around the stator core 3 a and constitutes an armature of the rotating electrical machine 2. In this example, the stator core 3a is formed by laminating a plurality of electromagnetic steel plates, and is formed in a cylindrical shape.

  A rotor 4 as a field magnet having a permanent magnet is disposed on the inner radial direction R1 side of the stator 3. The rotor 4 is supported by the case 80 so as to be rotatable around the rotation axis X, and is thereby rotatable relative to the stator 3. The rotor 4 includes a first rotor 10 and a second rotor 20 that can adjust the relative position in the circumferential direction C.

  The first rotor 10 includes a cylindrical first rotor core 11 disposed so as to face the stator 3 in the radial direction R on the radial inner direction R1 side. In this example, the first rotor core 11 is configured by laminating a plurality of electromagnetic steel plates. In addition, the first rotor 10 includes a first rotor core support member 12 that supports the first rotor core 11 by sandwiching the first rotor core 11 from both sides in the axial direction L and rotates integrally with the first rotor core 11. And the sensor rotor of the rotation sensor 5 (resolver in this example) is provided on the first rotor core 11 of the first rotor core support member 12 on the side in the second axial direction L2 (second supported portion 17 described later). It is attached to rotate integrally. The rotation sensor 5 is a sensor for detecting the rotation position (electrical angle) and rotation speed of the rotor 4 with respect to the stator 3.

  The second rotor 20 is on the side opposite to the stator 3 relative to the first rotor core 11 (on the radial inner side R1 in this example), and is arranged coaxially with the first rotor core 11. 21 is provided. The second rotor core 21 is disposed so as to overlap the first rotor core 11 when viewed in the radial direction R. In this example, the second rotor core 21 has the same axial length L as the first rotor core 11 and is arranged so as to overlap the first rotor core 11 and the entire axial direction L when viewed in the radial direction R. . In this example, the second rotor core 21 is configured by laminating a plurality of electromagnetic steel plates. The second rotor 20 includes a second rotor core support member 22 that supports the second rotor core 21 and rotates integrally with the second rotor core 21.

  Here, the rotary electric machine 2 according to the present embodiment is a variable magnetic flux type rotary electric machine, and at least one of the first rotor core 11 and the second rotor core 21 is provided with a permanent magnet. In this example, only the second rotor core 21 is provided with a permanent magnet. Further, on both sides of the second rotor core 21 in the axial direction L, end plates 21 a for preventing permanent magnets provided inside the second rotor core 21 are provided. The end plate 21a on the second axial direction L2 side has a second rotor core support member 22 (contact support portion 23) formed by a flange portion formed on the second rotor core support member 22 (contact support portion 23 described later). In contrast, it is positioned and held in the axial direction L. In addition, the end plate 21a on the first axial direction L1 side is not shown in the figure, but it is supported with respect to the second rotor core support member 22 (abutment support portion 23) by caulking structure, welding, or retaining by another member. Positioned and held in the axial direction L.

  On the other hand, a flux barrier is formed on the first rotor core 11. In this example, the first rotor core 11 has a gap as a flux barrier. The permanent magnet and the flux barrier are arranged such that the magnetic flux reaching the stator 3 changes according to the relative position in the circumferential direction C between the first rotor 10 and the second rotor 20.

  For example, the permanent magnet and the flux barrier are magnetic fluxes that reach the stator 3 by suppressing the short circuit of the magnetic circuit in the first rotor core 11 according to the relative position in the circumferential direction C between the first rotor 10 and the second rotor 20. Can be arranged so as to be able to take both of a state in which the magnetic flux in the first rotor core 11 is increased and a state in which the magnetic circuit reaching the stator 3 is reduced by promoting a short circuit of the magnetic circuit. By providing such a configuration, it is possible to adjust the relative position of the first rotor 10 and the second rotor 20 in the circumferential direction C and adjust the magnetic flux reaching the stator 3.

  The relative position adjustment mechanism 50 is a mechanism that adjusts the relative position in the circumferential direction C between the first rotor core 11 and the second rotor core 21. As described above, the first rotor core support member 12 rotates integrally with the first rotor core 11, and the second rotor core support member 22 rotates integrally with the second rotor core 21. The relative position adjustment mechanism 50 adjusts the relative position in the circumferential direction C between the first rotor core support member 12 and the second rotor core support member 22, so that the circumferential direction C between the first rotor core 11 and the second rotor core 21. Adjust the relative position of.

  In the present embodiment, as shown in FIGS. 1 and 3, the relative position adjustment mechanism 50 includes two differential gear devices (a first differential gear device 51 and a second differential gear device 52). ing. The relative position adjustment mechanism 50 is disposed on the first axial direction L1 side with respect to the rotating electrical machine 2 (see FIG. 1). That is, the relative position adjusting mechanism 50 is arranged on the first axial direction L1 side with respect to both the first rotor core 11 and the second rotor core 21. The first differential gear device 51 and the second differential gear device 52 are arranged such that the first differential gear device 51 is positioned on the first axial direction L1 side with respect to the second differential gear device 52. They are arranged side by side in the axial direction L.

  In the present example, the first differential gear device 51 is configured by a single pinion type planetary gear mechanism including three rotating elements. That is, the first differential gear device 51 includes, as rotating elements, a first carrier 51b that supports a plurality of pinion gears, and a first sun gear 51a and a first ring gear 51c that mesh with the pinion gears. The first sun gear 51a is drivingly coupled so as to rotate integrally with the second rotor core support member 22. The first carrier 51b is drivingly connected so as to rotate integrally with the output shaft 6. As a result, the second rotor core support member 22 is drivingly connected to the output shaft 6 via the relative position adjustment mechanism 50.

  The first ring gear 51c is formed with a worm wheel 56 that meshes with the worm gear 54 on an outer peripheral surface thereof (a surface facing the radially outward direction R2, hereinafter the same). Then, by rotating the worm gear 54, the rotational position of the first ring gear 51c is adjusted. The worm gear 54 is connected to a driving force source (such as a motor, not shown) that rotationally drives the worm gear 54, and is rotated by the driving force source when adjusting the rotational position of the first ring gear 51c. Fixed except at times. Therefore, the first ring gear 51c is in a fixed state except when the rotational position is adjusted.

  In this example, the second differential gear device 52 is configured by a single pinion type planetary gear mechanism including three rotating elements. In other words, the second differential gear device 52 includes a second carrier 52b that supports a plurality of pinion gears, and a second sun gear 52a and a second ring gear 52c that respectively mesh with the pinion gears as rotating elements. The second sun gear 52a is drivingly connected so as to rotate integrally with the first rotor core support member 12. The second carrier 52b is drivingly coupled so as to rotate integrally with the output shaft 6. Thereby, the first rotor core support member 12 is drivingly connected to the output shaft 6 via the relative position adjusting mechanism 50. That is, in this example, both the first rotor core support member 12 (first rotor core 11) and the second rotor core support member 22 (second rotor core 21) are connected to the common output shaft 6 via the relative position adjustment mechanism 50. Drive coupled. Further, the second ring gear 52 c is fixed to the case 80 (specifically, a first wall portion 81 to be described later) via an annular member 55.

  In this example, the first carrier 51b and the second carrier 52b integrally form an integral carrier 53, and the integral carrier 53 is drivingly connected so as to rotate integrally with the output shaft 6. In this example, the first differential gear device 51 and the second differential gear device 52 are configured to have the same diameter, and the gear ratio of the first differential gear device 51 (= the number of teeth of the first sun gear 51a). / The number of teeth of the first ring gear 51c) and the gear ratio of the second differential gear device 52 (= the number of teeth of the second sun gear 52a / the number of teeth of the second ring gear 52c) are set to be equal to each other. The first ring gear 51c and the second ring gear 52c are both fixed, except when the rotational position of the first ring gear 51c is adjusted. Therefore, the second rotor core support member 22 drivingly connected to the first sun gear 51a and the first rotor core support member 12 drivingly connected to the second sun gear 52a are referred to as the same rotational speed (hereinafter referred to as “rotor rotational speed”). )). The rotation speed of the output shaft 6 is decelerated with respect to the rotor rotation speed. That is, in this example, the torque of the rotating electrical machine 2 is amplified and transmitted to the output shaft 6.

  In the present embodiment, the second ring gear 52c is fixed to the case 80, whereas the rotational position of the first ring gear 51c can be adjusted. That is, in two planetary gear mechanisms in which carriers are integrally formed, one ring gear can be moved relative to the other ring gear in the circumferential direction C (that is, relative rotation). Accordingly, one sun gear relatively moves (relatively rotates) with respect to the other sun gear. Therefore, by adjusting the rotation position of the first ring gear 51c, the relative position in the circumferential direction C between the first sun gear 51a and the second sun gear 52a can be adjusted. As a result, the first rotor core support member 12 and the second sun gear 52a can be adjusted. The relative position in the circumferential direction C with the rotor core support member 22 can be adjusted.

  As described above, the first rotor core support member 12 and the second rotor core support member 22 rotate at the same rotational speed (rotor rotational speed). Therefore, by adjusting the relative position of the first rotor core support member 12 and the second rotor core support member 22 in the circumferential direction C, the phase of rotation of the first rotor core support member 12 rotating at the rotor rotation speed and the rotor rotation are also the same. The phase difference from the rotation phase of the second rotor core support member 22 rotating at a speed, in other words, the relative phase (relative rotation phase) between the first rotor core support member 12 and the second rotor core support member 22 is adjusted. Become.

  Incidentally, the case 80 includes a first wall portion 81 and a second wall portion 82. The first wall portion 81 has a shape extending at least in the radial direction R, and extends in the radial direction R and the circumferential direction C in this example. And the 1st wall part 81 divides the space in case 80 in the axial direction L, the rotary electric machine 2 is arrange | positioned in the space of the axial 2nd direction L2 side with respect to the 1st wall part 81, and a 1st wall part A relative position adjusting mechanism 50 is arranged in a space on the first axial direction L1 side with respect to 81.

  In the present embodiment, the first wall portion 81 is formed such that the axial direction L position is uniformly formed in the circumferential direction C and the radial direction R as a whole, and the axial direction L width is near the end on the radial inner direction R1 side. It is formed larger than the portion on the radial direction R2 side. And the through-hole 81a of the axial direction L is formed in the center part of radial direction R of the 1st wall part 81, The 1st to-be-supported part 16 of the 1st rotor core support member 12 and the said through-hole 81a The axially extending portion 24 of the second rotor core support member 22 is inserted.

  In this example, the second wall portion 82 has a shape extending in the radial direction R and the circumferential direction C, and is configured to close the opening portion on the axial second direction L2 side of the circumferential wall portion 83. That is, the second wall portion 82 partitions the internal space and external space of the case 80 in the axial direction L. And the 2nd wall part 82 is provided with the axial direction protrusion part 82a of the cylindrical (boss shape) as a whole which protrudes in the axial first direction L1 side.

1-2. Next, configurations of the first rotor core support member 12 and the second rotor core support member 22 according to the present embodiment will be described in detail. As described above, the first rotor core 11 is supported by the case 80 so as to be rotatable about the rotation axis X while being supported by being sandwiched from both sides in the axial direction L by the first rotor core support member 12. In the present embodiment, the first rotor core support member 12 has a first bearing 91 disposed on the first axial direction L1 side with respect to the first rotor core 11 and a second axial direction L2 side with respect to the first rotor core 11. The second bearing 92 is disposed so as to be rotatable with respect to the case 80 on both sides in the axial direction L. In this example, both the first bearing 91 and the second bearing 92 are rolling bearings including an outer ring, an inner ring, and rolling elements (balls in the example shown in FIG. 1).

  The first rotor core support member 12 includes a first support portion 13 that supports the first rotor core 11 from the axial first direction L1 side, a second support portion 14 that supports the first rotor core 11 from the axial second direction L2 side, An axial connection portion 15 that connects the first support portion 13 and the second support portion 14 to the second rotor core 21 on the radial inner side R1 side (in this example, connected in the axial direction L). . In the present embodiment, as shown in FIGS. 1 and 2, both the first support portion 13 and the second support portion 14 are formed in an annular plate shape extending in the radial direction R and the circumferential direction C. . Further, the axial direction connecting portion 15 is formed in a cylindrical shape whose axial center coincides with the axial direction L.

  As shown in FIGS. 1 and 2, the axial connecting portion 15 is formed with an opening 15 a and a notch 15 b that penetrate in the radial direction R. In FIG. 2, the first rotor core support member 12 and the first rotor core support member 12 and the first rotor core support member 12 are disassembled and shown in order to facilitate understanding of the configurations of the first rotor core support member 12 and the second rotor core support member 22. A part of the two-rotor core support member 22 is shown as a cross-sectional view. In addition, cross-sectional views at three different axial L positions (positions indicated by a, b, and c in the figure) are shown as insets (a), (b), and (c).

  The opening 15a and the notch 15b are provided continuously in the axial direction L at the same circumferential direction C position. Specifically, the opening 15a and the notch 15b are formed so that the end in the first axial direction L1 side of the opening 15a and the end in the second axial direction L2 side of the notch 15b communicate with each other. ing. In this example, an opening 15a and a notch 15b are formed at each of circumferential positions C that equally divide the circumference into two. In the present embodiment, the opening 15a has a rectangular cross-section cut along a cylindrical surface whose axial center coincides with the axial direction L. That is, the opening 15 a includes wall portions extending along the circumferential direction C on both sides in the axial direction L, and includes wall portions extending along the axial direction L on both sides in the circumferential direction C. Further, the cutout portion 15b has a rectangular cross-sectional shape cut along a cylindrical surface whose axial center coincides with the axial direction L.

  An insertion hole 72 for the fastening bolt 70 is formed at a contact portion of the first support portion 13 with the first rotor core 11. Further, a fastening hole 71 of a fastening bolt 70 is formed in a contact portion of the second support portion 14 with the first rotor core 11. Further, the first rotor core 11 is formed with an insertion hole 11 a for the fastening bolt 70. Then, the fastening bolt 70 is inserted from the first axial direction L1 side into the insertion hole 72 and the insertion hole 11a, and the second axial direction L2 side portion of the fastening bolt 70 is screwed into the fastening hole 71. The rotor core 11 is sandwiched and held between the first support portion 13 and the second support portion 14. In addition, although illustration is abbreviate | omitted, in this example, the 1st rotor core 11 is fastened with respect to the 1st support part 13 and the 2nd support part 14 with the fastening volt | bolt 70 in the circumferential direction C position which divides a circumference into 8 equally. It is fixed.

  The first rotor core support member 12 is in contact with the first bearing 91 from the second axial direction L2 side, and the first supported portion 16 supported in the radial direction R by the first bearing 91. The second supported portion 17 is supported in the radial direction R by the second bearing 92 in a state of being in contact with the second bearing 92 from the first axial direction L1 side. In the present embodiment, as shown in FIGS. 1 and 2, the first supported portion 16 and the second supported portion 17 are formed in a cylindrical shape whose axial center coincides with the axial direction L. And the step part 16a of radial direction R is formed in the outer peripheral surface of the 1st to-be-supported part 16, and the contact surface which contact | abuts from the axial 2nd direction L2 side with respect to the 1st bearing 91 by the said step part 16a is formed. Has been. Further, a step portion 17a in the radial direction R is formed on the outer peripheral surface of the second supported portion 17, and a contact surface that makes contact with the second bearing 92 from the first axial direction L1 side is formed by the step portion 17a. Has been. And the 1st spline tooth | gear 61 which carries out a spline coupling | bonding with the 2nd sun gear 52a with which the 2nd differential gear apparatus 52 is provided is formed in the internal peripheral surface of the axial first direction L1 side part of the 1st to-be-supported part 16. .

  The first bearing 91 is internally fitted to the inner peripheral surface of the through hole 81 a formed in the first wall portion 81 (the surface facing the radial inner direction R <b> 1, the same applies hereinafter), and is attached to the first wall portion 81. The first wall portion 81 is positioned and held in both the axial direction L and the radial direction R by contacting the formed support surface from the second axial direction L2 side. The second bearing 92 is fitted into the inner peripheral surface of the axial projecting portion 82 a formed in the second wall portion 82, and the first axial direction with respect to the support surface formed in the second wall portion 82. By abutting from the L1 side, both the axial direction L and the radial direction R are positioned and held by the second wall portion 82.

  And in this embodiment, as shown in FIG. 2, the 1st support part 13 and the 1st to-be-supported part 16 are integrally formed, and the 1st member 31 is comprised. Further, the axial connection portion 15, the second support portion 14, and the second supported portion 17 are integrally formed to constitute the second member 32. That is, in the present embodiment, the first rotor core support member 12 is configured to include the first member 31 and the second member 32 that are formed as separate members. And the 1st member 31 and the 2nd member 32 are integrated by being connected in the connection part 35 (refer FIG. 1).

  Specifically, a connecting concave portion 31a for receiving the tip portion of the second member 32 on the first axial direction L1 side from the second axial direction L2 side is provided at a site constituting the connecting portion 35 of the first member 31. Is formed. The connecting recess 31a is formed as a cylindrical space having a circular cross-section on a plane orthogonal to the axial direction L. In addition, the axial first direction L1 side surface (a surface facing the second axial direction L2, hereinafter referred to as “bottom surface”) of the connecting recess 31a is formed in an annular shape when viewed in the axial direction L.

  A cylindrical tip on the first axial direction L1 side of the second member 32 (specifically, the axial connecting portion 15) is fitted to the inner peripheral surface of the connecting recess 31a (in this example, by press-fitting). It has been fitted. The tip of the second member 32 (axial connecting portion 15) on the side in the first axial direction L1 is inserted in the connecting concave portion 31a in the axial direction L until it comes into contact with the bottom surface of the connecting concave portion 31a. Therefore, in the connection part 35 of the 1st member 31 and the 2nd member 32, while the 1st member 31 and the 2nd member 32 mutually contact | abut in radial direction R, the 1st member 31 and the 2nd member 32 are shafts. They also contact each other in the direction L. Thereby, the first member 31 and the second member 32 are positioned and fixed to each other in both the radial direction R and the axial direction L, and the first supported portion 16 and the second member 32 constituting the first member 31 are configured. It is easy to ensure both the degree of coaxiality with the second supported portion 17 and the accuracy of the axial L distance.

  Specifically, as shown in FIG. 2, the first member 31 is provided with a first radial contact surface 34a, and the second member 32 is provided with a second radial contact surface 34b. The radial contact surface 34 a and the second radial contact surface 34 b are in contact with each other in the radial direction R at the connecting portion 35. In this example, the length L in the axial direction of the first radial contact surface 34a and the second radial contact surface 34b is equal to the depth of the coupling recess 31a (the length in the axial direction L). In addition, the depth of the recessed part 31a for a connection is set to the depth which can ensure the coaxiality required between the 1st member 31 and the 2nd member 32. FIG. In the present embodiment, the first radial contact surface 34a and the second radial contact surface 34b correspond to the “radial contact surface” in the present invention.

  Further, as shown in FIG. 2, the first member 31 is provided with a first axial contact surface 33a, and the second member 32 is provided with a second axial contact surface 33b. The contact surface 33 a and the second axial contact surface 33 b are in contact with each other in the axial direction L at the connecting portion 35. Here, the bottom surface of the connecting recess 31a is the first axial contact surface 33a. In this example, since the radial direction R width of the axial direction connecting portion 15 is set equal to the radial direction R width of the bottom surface of the connecting recess 31a, the first axial direction contact surface 33a and the second axial direction are set. The radial direction R length of the contact surface 33b is equal to the radial direction R width of the bottom surface of the connecting recess 31a in this example. In the present embodiment, the first axial contact surface 33a and the second axial contact surface 33b correspond to the “axial contact surface” in the present invention.

  As described above, the second rotor core 21 is supported by the case 80 so as to be rotatable around the rotation axis X while being supported by the second rotor core support member 22. The second rotor core support member 22 is rotatably supported with respect to the first rotor core support member 12 by a third bearing 93 and a fourth bearing 94 that are spaced apart from each other in the axial direction L. In other words, the second rotor core support member 22 is rotatable with respect to the case 80 via the first bearing 91, the second bearing 92, the third bearing 93, the fourth bearing 94, and the first rotor core support member 12. It is supported. In this example, both the third bearing 93 and the fourth bearing 94 are bushes.

  The second rotor core support member 22 is formed in the axial connection portion 15 and the axial extension portion 24 extending in the axial direction L on the radial inner side R1 side with respect to the axial connection portion 15 provided in the first rotor core support member 12. A radial connecting portion 25 that passes through the opening 15 a in the radial direction R and connects the second rotor core 21 and the axially extending portion 24. In the present embodiment, the second rotor core support member 22 further includes an abutment support portion 23 that abuts and supports the second rotor core 21 from the radially inner direction R1 side, and the radial coupling portion 25 is an axially extending portion. 24 and the contact support portion 23 are connected to connect the axially extending portion 24 and the second rotor core 21.

  In the present embodiment, as shown in FIGS. 1 and 2, both the contact support portion 23 and the axially extending portion 24 are formed in a cylindrical shape whose axial center coincides with the axial direction L. In order to support the second rotor core 21 from the radially inner direction R1 side in the entire area in the axial direction L, the contact support portion 23 has a length in the axial direction L that is greater than or equal to the length in the axial direction L of the second rotor core 21 ( It is set slightly longer in this example). Although detailed description is omitted, in this example, the outer peripheral surface of the contact support portion 23 and the inner peripheral surface of the second rotor core 21 are relatively moved in the circumferential direction C (relative rotation) by key coupling between the key and the key groove. ) Engaged impossible. Therefore, the second rotor core 21 rotates integrally with the contact support portion 23 in a state of contact with the outer peripheral surface of the contact support portion 23. In this example, a flange portion that contacts the end plate 21a from the second axial direction L2 side is formed at the end portion of the second contact direction 23 in the second axial direction L2. Further, the inner peripheral surface of the contact support portion 23 is formed to have a slightly larger diameter than the outer peripheral surface of the axial connection portion 15, and the inner peripheral surface of the contact support portion 23 and the outer peripheral surface of the axial connection portion 15 are formed. A third bearing 93 is disposed in the gap therebetween.

  Moreover, in this embodiment, the axial direction extension part 24 is the radial direction R1 side with respect to the 1st rotor core support member 12 (specifically, the axial direction connection part 15 and the 1st supported part 16), It forms so that it may extend in the axial first direction L1 side from the connection part with the radial direction connection part 25. As shown in FIG. And the 2nd spline tooth | gear 62 which carries out a spline coupling | bonding with the 1st sun gear 51a with which the 1st differential gear apparatus 51 is provided is formed in the axial direction 1st direction L1 side part of the axial direction extension part 24. As shown in FIG. As shown in FIG. 1, the connecting portion between the axially extending portion 24 and the first sun gear 51 a (the arrangement position of the second spline teeth 62) is the connecting portion between the first supported portion 16 and the second sun gear 52 a. It is located on the first axial direction L1 side with respect to (the arrangement position of the first spline teeth 61). That is, in the present embodiment, the axially extending portion 24 is in the first axial direction L1 with respect to the connection portion between the first rotor core support member 12 (the first supported portion 16 in this example) and the relative position adjusting mechanism 50. The relative position adjustment mechanism 50 is connected on the side.

  As shown in FIG. 1, in this example, the inner peripheral surface of the axial connecting portion 15 and the innermost peripheral surface of the first supported portion 16 are formed to have the same diameter. The outer peripheral surface of the axially extending portion 24 is formed to have a slightly smaller diameter than the innermost peripheral surface of the first supported portion 16, and the outer peripheral surface of the axially extending portion 24 and the outermost surface of the first supported portion 16 are formed. A fourth bearing 94 is disposed in the gap between the inner peripheral surface.

  As described above, the axial connection portion 15 includes two openings 15a. In accordance with this, the second rotor core support member 22 includes two radial connecting portions 25. In the present embodiment, the radial connecting portion 25 is formed integrally with the axially extending portion 24 and extends along the radial direction R from the outer peripheral surface of the axially extending portion 24 to the radially outward direction R2 side. It is formed as follows. Further, the radial connecting portion 25 has a rectangular cross-sectional shape cut along a cylindrical surface whose axial center coincides with the axial direction L. Then, the radially outer side R2 side portion of the radial connecting portion 25 is engaged (key-coupled) with a key groove 23a provided on the inner peripheral surface of the contact support portion 23, so that the radial connecting portion 25 and Relative movement (relative rotation) in the circumferential direction C with respect to the contact support portion 23 is restricted, and as a result, the axially extending portion 24, the radial direction connecting portion 25, and the contact support portion 23 rotate integrally.

  In addition, in this embodiment, since the axial direction connection part 15 is the structure by which the edge part by the side of the axial first direction L1 is fitted (internal fitting) to the connection recessed part 31a provided in the 1st member 31, It is easy to reduce the thickness of the axial connecting portion 15 in the radial direction R. That is, the radial direction R length of the opening 15a is shortened, and the radial direction R length of the radial coupling part 25 constituting a part of the power transmission path between the second rotor 20 and the output shaft 6 is shortened. Therefore, it is easy to ensure the strength required for the second rotor core support member 22.

  By the way, as shown in FIG. 2B, the opening 15a has a circumferential width D2 larger than the circumferential width D1 of the radial connecting portion 25. As shown in FIG. 1, the first rotor core support member 12 and the second rotor core support member 22 are in the radial direction R in the entire region in the axial direction L excluding the locations where the third bearing 93 and the fourth bearing 94 are disposed. These clearances (clearances) are secured, and are configured to be rotatable relative to each other. Therefore, the second rotor core support member 22 can rotate relative to the first rotor core support member 12 with the rotation of the first ring gear 51c by the relative position adjustment mechanism 50, and the allowable range of the relative rotation is the radial direction. It is determined according to the movable range along the circumferential direction C in the opening 15a of the connecting portion 25.

  Specifically, the circumferential width D2 of the opening 15a is equal to the circumferential width D1 of the radial coupling portion 25 and the circumference of the adjustment range of the relative position of the first rotor 10 and the second rotor 20 in the circumferential direction C. The circumferential width is set to be larger (slightly larger in this example) than the width including the direction width. Here, the adjustment range of the relative position in the circumferential direction C between the first rotor 10 and the second rotor 20 can be set to a range of 90 degrees or 180 degrees in electrical angle, for example. The adjustment range of the relative position in the circumferential direction C between the first rotor 10 and the second rotor 20 is such that the circumferential C length of the worm wheel 56 that meshes with the worm gear 54 formed on the outer peripheral surface of the first ring gear 51c. It can be adjusted by the height.

  As described above, the opening 15a includes the two rotor core support members 22 arranged on the opposite sides in the radial direction R with respect to the first rotor core support member 12 (specifically, the axial connection portion 15). For connecting the portions (specifically, the contact support portion 23 and the axially extending portion 24) and for allowing the second rotor core support member 22 to rotate relative to the first rotor core support member 12. It is also a thing. Further, the notch 15b formed adjacent to the opening 15a on the first axial direction L1 side is for passing the radial connecting portion 25 in the axial direction L during assembly, and its circumferential direction. The width is set to be larger (slightly larger in this example) than the circumferential width D1 of the radial connecting portion 25. By providing such a notch portion 15b, the first rotor core support member 22 is in the first axial direction L1 with respect to the second member 32 at a stage before the first member 31 and the second member 32 are connected. It can be inserted from the side.

2. Second Embodiment Next, a second embodiment of the rotating electrical machine according to the present invention will be described with reference to FIGS. 4 and 5. The rotating electrical machine 2 according to the present embodiment basically has the same configuration as that of the first embodiment, but the configuration of the first rotor core support member 12 is different from that of the first embodiment. Yes. Below, the structure of the rotary electric machine 2 which concerns on this embodiment is demonstrated centering on difference with said 1st embodiment. Note that points not particularly described are the same as those in the first embodiment.

  As shown in FIGS. 4 and 5, in the present embodiment, unlike the first embodiment, the first support portion 13 and the first supported portion 16 are not integrally formed. Specifically, in the present embodiment, the first supported portion 16, the axial connection portion 15, the second support portion 14, and the second supported portion 17 are integrally formed to constitute the second member 32. ing. On the other hand, the first support portion 13 constitutes a first member 31. And the 1st member 31 and the 2nd member 32 which were formed as a mutually separate member are connected and integrated by the connection part 35 (refer FIG. 4).

  Specifically, the first member 31 is fitted to the outer peripheral surface of the second member 32 in the first axial direction L1 side (in this example, an interference fit by press-fitting). The two members 32 are integrated. As in the first embodiment, also in the present embodiment, in the connection portion 35 between the first member 31 and the second member 32, the first radial contact surface 34a provided on the first member 31, The second radial contact surface 34 b provided on the second member 32 is in contact with each other in the radial direction R. Further, in the connecting portion 35 between the first member 31 and the second member 32, the first axial contact surface 33 a provided in the first member 31 and the second axial contact provided in the second member 32. The surfaces 33b are in contact with each other in the axial direction L. That is, the first member 31 and the second member 32 are positioned and fixed with respect to each other in both the radial direction R and the axial direction L. In the present example, the second axial contact surface 33 b is formed by a step portion in the radial direction R formed on the outer peripheral surface of the axial connection portion 15 of the second member 32.

  In the present embodiment, the first supported portion 16 supported by the first bearing 91 on the first axial direction L1 side and the second supported portion supported by the second bearing 92 on the second axial direction L2 side. 17 are integrally formed as the second member 32. Therefore, as compared with the first embodiment, it is easier to ensure both the coaxiality between the first supported portion 16 and the second supported portion 17 and the accuracy of the axial L interval. .

  In the present embodiment, since the first supported portion 16 is formed integrally with the axial connecting portion 15, the notch portion 15 b is also formed in the first supported portion 16 as shown in FIG. 5. Has been. Thereby, it is possible to insert the second rotor core support member 22 into the second member 32 from the first axial direction L1 side before the first member 31 and the second member 32 are connected. ing.

3. Other Embodiments Finally, other embodiments according to the present invention will be described. Note that the features disclosed in each of the following embodiments can be used only in that embodiment, and can be applied to other embodiments as long as no contradiction arises.

(1) In said 1st embodiment, the 1st support part 13 and the 1st supported part 16 are formed integrally, and the axial direction connection part 15, the 2nd support part 14, and the 2nd supported part 17 are formed. As an example, a configuration in which is formed integrally is described. However, the embodiment of the present invention is not limited to this, and the first support portion 13, the first supported portion 16, and the axial connection portion 15 are integrally formed, and the second support portion 14 and the first support portion 14 are formed integrally. A configuration in which the two supported portions 17 are integrally formed may be employed. In the second embodiment, the first supported portion 16, the axial connection portion 15, the second support portion 14, and the second supported portion 17 are integrally formed, and the first support portion 13 is formed by these. A configuration formed separately from the above is described as an example. However, the embodiment of the present invention is not limited to this, and the first support part 13, the first supported part 16, the axial connection part 15, and the second supported part 17 are integrally formed, The 2nd support part 14 can also be set as the structure formed separately from these.

  In addition, any part of each part (the 1st support part 13, the 2nd support part 14, the axial direction connection part 15, the 1st supported part 16, and the 2nd supported part 17) with which the 1st rotor core support member 12 is provided. Whether to form them integrally can be appropriately changed according to the assembly direction, the shape of the member, and the like. For example, the 1st member by which the 1st support part 13 and the 1st supported part 16 are integrally formed, the 2nd member as the axial direction connection part 15, the 2nd support part 14, and the 2nd The first rotor core support member 12 may be configured by including a third member formed integrally with the supported portion 17. For example, the 1st member as the 1st support part 13, the 1st supported part 16, the axial direction connection part 15, and the 2nd supported part 17 are formed integrally. And the 1st rotor core support member 12 may be comprised including the 3rd member as the 2nd support part 14. FIG. In any case, it is preferable that an axial contact surface that is in contact with each other in the axial direction and a radial contact surface that is in contact with each other in the radial direction are provided in a connecting portion between different members.

(2) In each of the above embodiments, the configuration in which the axial connecting portion 15 includes two openings 15a and two notches 15b has been described as an example. However, the embodiment of the present invention is not limited to this, and the number of openings 15a and notches 15b formed in the axial connecting portion 15 can be appropriately changed. For example, the axial direction connection part 15 can be set as the structure provided with the opening part 15a and the notch part 15b, respectively, respectively, and the structure provided with three or four each.

(3) In each of the above embodiments, the configuration in which the radial connecting portion 25 is formed integrally with the axially extending portion 24 has been described as an example. However, the embodiment of the present invention is not limited to this, and the configuration in which the radial coupling portion 25 is integrally formed with the contact support portion 23 or the contact support portion 23 is formed integrally. It can also be set as the structure made. Moreover, the radial direction connection part 25 can also be set as the structure formed separately from both the contact support part 23 and the axial direction extension part 24. FIG.

(4) In each of the above embodiments, the configuration in which the axially extending portion 24 is formed so as to extend from the connecting portion with the radial connecting portion 25 to the axial first direction L1 side has been described as an example. However, the embodiment of the present invention is not limited to this, and is configured such that the axially extending portion 24 extends from the connecting portion with the radial connecting portion 25 to the axial second direction L2 side. Or it is also possible to set it as the structure formed so that it might extend only from the connection site | part with the radial direction connection part 25 to the axial 2nd direction L2 side.

(5) In the above embodiments, the configuration in which the second rotor core support member 22 includes the contact support portion 23 has been described as an example. However, the embodiment of the present invention is not limited to this, and the second rotor core support member 22 does not include the contact support portion 23 and the radial connection portion 25 is directly connected to the second rotor core 21. You can also

(6) In each of the above embodiments, the configuration in which the notch 15b is formed adjacent to the opening 15a has been described as an example. However, the embodiment of the present invention is not limited to this. For example, when the radial connecting portion 25 is formed separately from both the contact support portion 23 and the axially extending portion 24, etc. Alternatively, the cutout portion 15b is not formed in the axial connecting portion 15, and only the opening portion 15a is formed.

(7) In each of the above embodiments, the configuration in which the second ring gear 52c is fixed to the case and the worm gear 54 adjusts the rotational position of the first ring gear 51c has been described as an example. However, the embodiment of the present invention is not limited to this, and the first ring gear 51c is fixed to the case, the worm wheel 56 that meshes with the worm gear 54 is formed on the second ring gear 52c, and the rotational position of the second ring gear 52c. Can be adjusted by the rotation of the worm gear 54. It is also possible to adopt a configuration in which the rotational positions of the first ring gear 51c and the second ring gear 52c are adjusted by a gear other than the worm gear 54.

(8) In each of the above embodiments, the configuration in which the integral carrier 53 is drivingly connected to the output shaft 6 has been described as an example. However, the embodiment of the present invention is not limited to this, and the first ring gear 51c and the second ring gear 52c are drivingly connected to the output shaft 6, and the first carrier 51b and the second carrier 52b are formed separately. In addition, one carrier may be fixed to the case 80 and the other carrier may be drivingly connected to the worm gear 54.

(9) In each of the above embodiments, the first rotor core support member 12 is drivingly connected to the rotating element of the second differential gear device 52, and the second rotor core support member 22 is the rotating element of the first differential gear device 51. The drive-coupled configuration has been described as an example. However, the embodiment of the present invention is not limited to this, and the first rotor core support member 12 is drivingly connected to the rotating element of the first differential gear device 51, and the second rotor core support member 22 is connected to the second differential gear device 51. It is also possible to adopt a configuration in which the rotating device of the gear device 52 is drivingly connected. Further, in each of the above embodiments, the rotation element to which the first rotor core support member 12 and the second rotor core support member 22 are drivingly connected is described as an example, but the first rotor core support member 12 and the second rotor core support member 12 A configuration in which both of the rotor core support members 22 are drivingly connected to the ring gear or a configuration in which the rotor core supporting member 22 is drivingly connected to the carrier may be employed. In these cases, the rotating element to which the first rotor core support member 12 and the second rotor core support member 22 are not drivingly connected is drivingly connected to the output shaft 6, the case 80, or the worm gear 54.

(10) In each of the above embodiments, the case where both the first differential gear device 51 and the second differential gear device 52 are single pinion type planetary gear mechanisms having three rotating elements will be described as an example. did. However, the embodiment of the present invention is not limited to this, and the first differential gear device 51 and the second differential gear device 52 are replaced with, for example, a double pinion type planetary gear mechanism having three rotating elements. It can also be configured as.

(11) In each of the embodiments described above, the configuration in which the permanent magnet is provided only in the second rotor core 21 has been described as an example. However, the embodiment of the present invention is not limited to this. For example, both the first rotor core 11 and the second rotor core 21 are provided with permanent magnets so that the magnetic flux reaching the stator 3 changes according to the relative position in the circumferential direction C between the first rotor 10 and the second rotor 20. Moreover, it can also be set as the structure by which both the permanent magnet with which the 1st rotor core 11 was equipped, and the permanent magnet with which the 2nd rotor core 21 was equipped are arrange | positioned. Alternatively, only the first rotor core 11 may be provided with a permanent magnet, and the second rotor core 21 may have a flux barrier (for example, a gap).

(12) In each of the above embodiments, the configuration in which both the first rotor core 11 and the second rotor core 21 are laminated bodies of a plurality of electromagnetic steel sheets has been described as an example. However, the embodiment of the present invention is not limited to this, and at least one of the first rotor core 11 and the second rotor core 21 is a pressure formed by pressure-molding magnetic powder that is a magnetic material powder. It is also possible to adopt a configuration in which the powder material is formed as a main component.

(13) In the above embodiment, the case where the rotating electrical machine 2 is configured as an inner rotor type rotating field type rotating electrical machine has been described as an example. However, the embodiment of the present invention is not limited to this, and the rotating electrical machine according to the present invention can also be applied to an outer rotor type rotating field rotating electrical machine. The rotating electrical machine according to the present invention can also be applied to a rotating armature type rotating electrical machine.

(14) Regarding other configurations as well, the embodiments disclosed herein are illustrative in all respects, and embodiments of the present invention are not limited thereto. That is, as long as the configuration described in the claims of the present application and a configuration equivalent thereto are provided, a configuration obtained by appropriately modifying a part of the configuration not described in the claims is naturally also included in the present invention. Belongs to the technical scope.

  The present invention can be suitably used for a rotating electrical machine including a stator and a first rotor and a second rotor capable of adjusting the relative positions in the circumferential direction.

2: rotating electrical machine 3: stator 6: output shaft (output member)
10: 1st rotor 11: 1st rotor core 12: 1st rotor core support member 13: 1st support part 14: 2nd support part 15: Axial direction connection part 15a: Opening part 16: 1st supported part 17: 2nd Supported part 20: second rotor 21: second rotor core 23: contact support part 24: axially extending part 25: radial connecting part 31: first member 32: second member 33a: first axial contact Surface (Axial contact surface)
33b: Second axial contact surface (axial contact surface)
34a: first radial contact surface (radial contact surface)
34b: Second radial contact surface (radial contact surface)
35: connecting portion 50: relative position adjusting mechanism 91: first bearing 92: second bearing L: axial direction L1: axial first direction L2: axial second direction R: radial direction

Claims (5)

A rotating electrical machine comprising a stator and a first rotor and a second rotor capable of adjusting a relative position in the circumferential direction,
The first rotor supports a cylindrical first rotor core disposed so as to face the stator in the radial direction, supports the first rotor core sandwiched from both sides in the axial direction, and rotates integrally with the first rotor core. A first rotor core support member that includes:
The second rotor is on the side opposite to the stator with respect to the first rotor core, and is disposed coaxially with the first rotor core so as to overlap the first rotor core when viewed in the radial direction. A cylindrical second rotor core,
The first rotor core support member supports the first rotor core from an axial first direction side that is one axial side, and the first rotor core from the second axial direction side that is the other axial side. A rotating electrical machine comprising: a second support portion that supports; and an axial connection portion that connects the first support portion and the second support portion on the side opposite to the stator with respect to the second rotor core. The axial connecting portion is formed in a cylindrical shape and includes an opening that penetrates in the radial direction.
The second rotor includes an axially extending portion extending in the axial direction on the anti-stator side with respect to the axially connecting portion, and the second rotor core and the axially extending through the opening in the radial direction. A radial connecting part that connects the parts,
The opening has a circumferential width larger than a width obtained by adding a circumferential width corresponding to an adjustment range of a relative position in the circumferential direction of the first rotor and the second rotor to a circumferential width of the radial coupling portion. The rotating electrical machine according to claim 1. Both the first rotor core and the second rotor core are disposed on the first axial direction side with respect to both the first rotor core and the second rotor core, and the circumference of the first rotor core and the second rotor core Drive-coupled to a common output member via a relative position adjustment mechanism that adjusts the relative position of the direction,
The axially extending portion extends on a side opposite to the stator side with respect to the first rotor core support member from the connecting portion with the radial connection portion toward the first axial direction side, and the first rotor core support member and the first rotor core support member The rotating electrical machine according to claim 2, wherein the rotating electrical machine is connected to the relative position adjusting mechanism on a first direction side of the shaft with respect to a connection position with the relative position adjusting mechanism. The first rotor core support member is in contact with the first bearing disposed on the first axial direction side with respect to the first rotor core from the second axial direction side by the first bearing. A first supported portion supported in the direction and a second bearing disposed on the second axial direction side with respect to the first rotor core, in a state in which the first supported portion is in contact from the first axial direction side. A second supported portion supported in the radial direction by two bearings,
The first member in which the first support portion and the first supported portion are integrally formed, the axial connection portion, the second support portion, and the second supported portion are integrally formed. A second member, and the first rotor core support member is configured,
The connecting portion between the first member and the second member is provided with an axial contact surface that contacts each other in the axial direction and a radial contact surface that contacts each other in the radial direction. The rotating electrical machine according to any one of the above. The first rotor core support member is in contact with the first bearing disposed on the first axial direction side with respect to the first rotor core from the second axial direction side by the first bearing. A first supported portion supported in the direction and a second bearing disposed on the second axial direction side with respect to the first rotor core, in a state in which the first supported portion is in contact from the first axial direction side. A second supported portion supported in the radial direction by two bearings,
A first member in which the first support portion is formed, and a second member in which the first supported portion, the axial connection portion, the second support portion, and the second supported portion are integrally formed. And the first rotor core support member is configured,
The connecting portion between the first member and the second member is provided with an axial contact surface that contacts each other in the axial direction and a radial contact surface that contacts each other in the radial direction. The rotating electrical machine according to any one of the above.

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