JP6582432B2 - Multi-rundel motor - Google Patents

Description

  The present invention relates to a multi-rundel type motor.

  The motor has a Landel-type rotor composed of a pair of rotor cores having a plurality of claw-shaped magnetic poles in the circumferential direction and permanent magnets arranged between the rotor cores, each claw-shaped magnetic pole functioning alternately as a different magnetic pole. Landel motors are known. Further, in Patent Document 1, in addition to the Landel type rotor, a pair of stator cores having a plurality of claw-shaped magnetic poles in the circumferential direction, and an annular winding disposed between the stator cores, each claw-shaped magnetic pole is alternately arranged. There have been proposed Landell type motors having Landel type stators that function in different magnetic poles. This Landell type motor is also called a multi-Landel type motor because the rotor and the stator are both of the Landel type.

  Since the multi-Landel motor can change the number of poles by changing the number of claw-shaped magnetic poles, it has a feature that it is easy to make it multi-polar.

JP 2014-161198 A

  By the way, in the Landel type stator, there exists a problem that the stator core which makes a pair tends to shift | deviate to a rotation direction. When the pair of stator cores is displaced in the rotational direction, the positions of the mutual claw-shaped magnetic poles in the rotational direction are displaced, so that the magnetic flux waveform may be disturbed.

  Further, in the Landel type rotor, there is a problem that the paired rotor cores are easily displaced in the rotational direction. When the pair of rotor cores is displaced in the rotation direction, the positions of the claw-shaped magnetic poles in the rotation direction are displaced, which may cause a disturbance in the magnetic flux waveform.

When the magnetic flux waveform is disturbed in the motor, vibration and noise may occur.
The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a multi-Landel type motor capable of suppressing the disturbance of the magnetic flux waveform.

A multi-Landel motor that solves the above-described problem includes first and second rotor cores each having a plurality of claw-shaped magnetic poles arranged in the circumferential direction and stacked in the axial direction, and a shaft disposed between the first and second rotor cores. A rotor having a permanent magnet magnetized in the direction, first and second stator cores each having a plurality of claw-shaped magnetic poles arranged in the circumferential direction and axially stacked, and a circumference between the first and second stator cores. A multi-Landel motor comprising a stator having windings arranged in a direction, wherein at least one of the claw-shaped magnetic poles of the first stator core and at least one of the claw-shaped magnetic poles of the second stator core; A stator insulating member that engages in a circumferentially immovable manner, and the stator includes the first and second stator cores, the winding, and the stator insulating member. The constructed by stacking a plurality of axially the stator insulation member, there is interposed between said first stator core and the second stator core of each of the stator portion, the stator of each of the stator portions The insulating member protrudes in the axial direction from the second stator core toward the outside of the first stator core, and the first stator core protrudes in the axial direction from the first stator core toward the outside of the stator portion. By having at least one of the second axially projecting portions, the first stator core and the second stator core of the stator portions adjacent in the axial direction are separated from each other in the axial direction.

According to this configuration, the stator insulating member engages with at least one of the claw-shaped magnetic poles of the first stator core and at least one of the claw-shaped magnetic poles of the second stator core so as not to be relatively movable in the circumferential direction. Thereby, a stator insulation member positions the 1st stator core and 2nd stator core of each stator part in a rotation direction. That is, the displacement of the first stator core and the second stator core in each stator portion in the rotational direction can be suppressed by the stator insulating member. Therefore, disturbance of the magnetic flux waveform can be suppressed.
According to this configuration, the stator cores of the stator portions adjacent in the axial direction can be easily separated in the axial direction by at least one of the first axial projection and the second axial projection provided on the stator insulating member. it can. Therefore, magnetic interference of each stator part can be suppressed.
A multi-Landel motor that solves the above-described problem includes first and second rotor cores each having a plurality of claw-shaped magnetic poles arranged in the circumferential direction and stacked in the axial direction, and a shaft disposed between the first and second rotor cores. A rotor having a permanent magnet magnetized in the direction, first and second stator cores each having a plurality of claw-shaped magnetic poles arranged in the circumferential direction and axially stacked, and a circumference between the first and second stator cores. A multi-Landel motor having a stator having windings arranged in a direction, and at least one of the claw-shaped magnetic poles of the first rotor core and at least one of the claw-shaped magnetic poles of the second rotor core A rotor insulating member that engages in a circumferentially immovable manner, and the rotor axially includes a rotor portion that includes the first and second rotor cores, the permanent magnet, and the rotor insulating member. Is constructed by stacking a plurality of the rotor insulation member, there is interposed between the first rotor core and the second rotor core of each of the rotor portions, the rotor of the rotor portion adjacent to each other in the axial direction The insulating member engages in the circumferential direction so as not to be relatively movable.
According to this configuration, the rotor insulating member engages with at least one of the claw-shaped magnetic poles of the first rotor core and at least one of the claw-shaped magnetic poles of the second rotor core so as not to be relatively movable in the circumferential direction. Thereby, a rotor insulation member positions the 1st rotor core and 2nd rotor core of each rotor part in a rotation direction. In other words, the rotational displacement between the first rotor core and the second rotor core in each rotor portion can be suppressed by the rotor insulating member. Therefore, disturbance of the magnetic flux waveform can be suppressed.
According to this configuration, the rotor insulating member positions the rotor portions adjacent in the axial direction in the rotational direction. Therefore, in a rotor configured by laminating a plurality of rotor portions in the axial direction, it is possible to suppress the disturbance of the magnetic flux waveform caused by the positional deviation in the rotational direction between the rotor portions.

In the multi-Landel type motor, the stator includes at least one of the first and second stator cores, the winding, at least one of the claw-shaped magnetic poles of the first stator core, and the claw-shaped magnetic pole of the second stator core. A plurality of stator portions each having one stator and a stator insulating member that engages with each other so as not to move relative to each other in the circumferential direction are stacked in the axial direction, and the stator insulating member includes the first stator core and the second stator portion of each stator portion. Preferably, the stator insulating member of the stator portion that is interposed between the stator core and adjacent in the axial direction is engaged so as not to be relatively movable in the circumferential direction.

  According to this configuration, the stator insulation members position the stator portions adjacent in the axial direction in the rotational direction. Therefore, in the stator configured by laminating a plurality of stator portions in the axial direction, it is possible to suppress the disturbance of the magnetic flux waveform caused by the positional deviation in the rotational direction between the stator portions.

In the multi-Landel type motor, the stator is engaged with at least one of the claw-shaped magnetic poles of the first stator core and at least one of the claw-shaped magnetic poles of the second stator core so as not to be relatively movable in the circumferential direction. The stator includes a plurality of stator portions each having the first and second stator cores, the windings, and the stator insulating member, which are stacked in the axial direction. The stator stator member is interposed between the first stator core and the second stator core, and the stator insulating member is a side surface of the first and second stator cores facing the space between the first and second stator cores. More preferably, it protrudes to the space side between the first and second stator cores.

  According to this configuration, the winding disposed between the first stator core and the second stator core is formed on the stator core insulating member that protrudes toward the space between the stator cores from the inner surface of the first and second stator cores. Abut. Therefore, the winding is difficult to contact the inner side surfaces of the first and second stator cores. Therefore, it is possible to insulate the first and second stator cores from the windings by the stator insulating member.

In the multi-Landel type motor, the stator is engaged with at least one of the claw-shaped magnetic poles of the first stator core and at least one of the claw-shaped magnetic poles of the second stator core so as not to be relatively movable in the circumferential direction. The stator includes a plurality of stator portions each having the first and second stator cores, the windings, and the stator insulating member, which are stacked in the axial direction. Preferably, the stator insulating member has a winding guide groove through which an end portion of the winding is inserted.

According to this configuration, the end of the winding can be easily pulled out of the stator from the winding guide groove .

In the multi-Landel type motor, the rotor is a rotor insulation that engages with at least one of the claw-shaped magnetic poles of the first rotor core and at least one of the claw-shaped magnetic poles of the second rotor core so as not to be relatively movable in the circumferential direction. The rotor is configured by laminating a plurality of rotor portions including the first and second rotor cores, the permanent magnets, and the rotor insulating member in the axial direction, and the stator is configured to be the first stator core. A stator insulating member that engages with at least one of the claw-shaped magnetic poles and at least one of the claw-shaped magnetic poles of the second stator core so as not to move relative to each other in the circumferential direction, and is opposed to the rotor in a radial direction ; A plurality of stator portions having the first and second stator cores, the windings, and the stator insulating member are laminated in the axial direction, The stator insulating member is interposed between the first rotor core and the second rotor core of each of the rotor portions, and the stator insulating member includes the first stator core and the second of the stator portions. The rotor insulating member and the stator insulating member are interposed between the stator core and the rotor insulating member and the stator insulating member in a rotational direction between the first and second rotor cores and the first and second stator cores facing each other in a radial direction. It is preferable to have sliding contact portions that are in sliding contact with each other.

  According to this configuration, the air gap between the rotor and the stator can be eliminated by the sliding contact portion of the rotor insulating member and the sliding contact portion of the stator insulating member. Since the sliding contact portion of the rotor insulating member and the sliding contact portion of the stator insulating member are in sliding contact with each other, the rotor can be held rotatably with respect to the stator by both sliding contact portions. Therefore, it is possible to reduce the number of parts that support the rotor. Further, the sliding contact portions can suppress the vibration of the rotor in the radial direction with respect to the stator and reduce the vibration of the rotor.

  According to the multi-rundel motor of the present invention, it is possible to suppress the disturbance of the magnetic flux waveform.

It is a perspective view of the motor of a 1st embodiment. It is a perspective view of the rotor of 1st Embodiment. It is a disassembled perspective view of the rotor part of 1st Embodiment. It is a perspective view of the stator of 1st Embodiment. It is a disassembled perspective view of the stator part of 1st Embodiment. It is a perspective view of the stator insulation member of a 1st embodiment. It is a perspective view of the 1st stator core and stator insulation member of a 1st embodiment. (A) And (b) is sectional drawing of the motor part in 2nd Embodiment. It is a disassembled perspective view of the stator in 3rd Embodiment. It is sectional drawing of the stator part in 4th Embodiment. It is sectional drawing of the stator part in 4th Embodiment. It is a perspective view of the stator in 5th Embodiment. It is sectional drawing of the stator in 6th Embodiment.

(First embodiment)
Hereinafter, an embodiment of a multi-Landel motor will be described.
As shown in FIG. 1, the motor 11 of this embodiment includes a rotor 13 having a rotating shaft 12 and an annular stator 14 fixed to a motor housing (not shown) disposed outside the rotor 13. Yes.

  The motor 11 is composed of three single motor units stacked in the axial direction, and these three single motor units are arranged from the top in FIG. 1 from the U-phase motor unit Mu, V-phase motor unit Mv, It is comprised in order of the W-phase motor part Mw.

  As shown in FIGS. 2 and 4, the three motor parts Mu, Mv, and Mw are respectively composed of a rotor part (U-phase rotor part Ru, V-phase rotor part Rv, and W-phase rotor part Rw) and a stator part (U-phase). A stator portion Su, a V-phase stator portion Sv, and a W-phase stator portion Sw). The rotor portions Ru, Rv, Rw of each phase constitute the rotor 13, and the stator portions Su, Sv, Sw of each phase constitute the stator 14.

[Configuration of rotor]
As shown in FIGS. 2 and 3, the three-phase rotor portions Ru, Rv, and Rw constituting the rotor 13 are sequentially stacked in the axial direction. Each of the rotor portions Ru, Rv, Rw has substantially the same configuration, and includes a first rotor core 21 and a second rotor core 22, a rotor insulating member 23 interposed between the first and second rotor cores 21 and 22, And a field magnet 24 sandwiched between the first and second rotor cores 21 and 22.

  The first rotor core 21 has a disk-shaped first rotor core base 25 provided with a through hole 25a through which the rotary shaft 12 (see FIG. 1) is inserted and fixed at the center of the diameter. Twelve first rotor-side claw-shaped magnetic poles 26 are provided on the outer peripheral edge of the first rotor core base 25 at equal intervals (30 ° intervals) in the circumferential direction.

  Each of the first rotor-side claw-shaped magnetic poles 26 includes a first radially extending portion 26a extending radially outward from the outer peripheral edge of the first rotor core base 25, and a distal end portion (radially outer side) of the first radially extending portion 26a. 1st magnetic pole part 26b which protrudes to an axial direction one side from an edge part. The first rotor-side claw-shaped magnetic pole 26 may be formed by bending the first magnetic pole part 26b at a right angle with respect to the first radial extension part 26a, or may be formed by casting in the first radial direction. The portion 26a and the first magnetic pole portion 26b may be integrally formed.

  The first radially extending portion 26a is formed in a substantially rectangular shape with a constant width in the circumferential direction when viewed from the axial direction. The circumferential side surfaces of the first rotor-side claw-shaped magnetic pole 26 composed of the first radially extending portion 26a and the first magnetic pole portion 26b are both flat and parallel. The first rotor-side claw-shaped magnetic pole 26 has a symmetrical shape with a plane passing through the center in the circumferential direction and orthogonal to the circumferential direction as a symmetry plane. The radially outer surface of each first magnetic pole portion 26b has an arc shape that is located on the same circle centered on the rotation axis of the rotor 13 when viewed from the axial direction.

  As shown in FIG. 3, the second rotor core 22 has the same shape as the first rotor core 21, and has a second rotor core base 27 and twelve second rotor side claw-shaped magnetic poles 28. The second rotor core base 27 having a through hole 27a through which the rotating shaft 12 (see FIG. 1) is inserted and fixed has the same shape as the first rotor core base 25 having the through hole 25a. The second rotor-side claw-shaped magnetic pole 28 composed of the second radially extending portion 28a and the second magnetic pole portion 28b is a first composed of the first radially extending portion 26a and the first magnetic pole portion 26b. The rotor side claw-shaped magnetic pole 26 has the same shape.

  The rotor insulating member 23 is formed of, for example, an insulating resin material and has an annular shape. The outer diameter of the rotor insulating member 23 is the outer diameter of the first rotor core 21 (that is, the diameter of a circle passing through the radially outer surface of the twelve first claw-shaped magnetic poles 26 b and is the same as the outer diameter of the second rotor core 22). ). Further, the inner diameter of the rotor insulating member 23 is formed to be equal to the diameter of the first rotor core base 25 (same as the diameter of the second rotor core base 27).

  The rotor insulating member 23 has the same number (that is, 12) of first rotor-side claw-shaped magnetic poles 26 at one end in the axial direction (the end on the first rotor core 21 side and the left end in FIG. 3). One positioning recess 31 is provided. The first positioning recesses 31 are formed at equal intervals (30 ° intervals) in the circumferential direction. Each first positioning recess 31 includes a first penetrating portion 31a that radially penetrates one end portion in the axial direction of the rotor insulating member 23, and the other end in the axial direction of the rotor insulating member 23 from the bottom surface of the first penetrating portion 31a. It is comprised from the 1st recessed part 31b recessedly provided by the side (namely, 2nd rotor core 22 side). The first recessed portion 31b is formed by recessing a radially outer portion of the bottom surface of the first through portion 31a, and is open on one side (the first penetrating portion 31a side) in the radially outer side and the axial direction. is doing.

  Each first positioning recess 31 has a substantially square shape when viewed from the radial direction. Further, the circumferential width of the first positioning recess 31 is formed to be equal to the circumferential width of the first rotor-side claw-shaped magnetic pole 26. Specifically, the circumferential width of the first through portion 31a is formed equal to the circumferential width of the first radially extending portion 26a, and the circumferential width of the first recessed portion 31b is the same as that of the first magnetic pole portion 26b. It is formed equal to the width in the circumferential direction. Further, the axial length (depth) of the first positioning recess 31 is formed to be equal to the axial length of the first rotor-side claw-shaped magnetic pole 26. The length (depth) of the first recessed portion 31b in the axial direction is the distance between the inner surface 25b of the first rotor core base 25 and the tip surface (end surface in the axial direction) of the first magnetic pole portion 26b. Are equally formed. Further, the radial width of the first recessed portion 31b is formed to be equal to the radial thickness of the first magnetic pole portion 26b. Furthermore, the inner side surfaces 31c on both sides in the circumferential direction in the first positioning recess 31 are parallel to the axial direction and have a planar shape extending along the radial direction. Thus, the 1st positioning recessed part 31 is a shape corresponding to the shape of the inner surface of the 1st rotor core 21 in the 1st rotor side claw-shaped magnetic pole 26, and the both-sides surface of the circumferential direction of the 1st rotor side claw-shaped magnetic pole 26. It has become.

  Further, the rotor insulating member 23 has the same number (that is, twelve) as the second rotor-side claw-shaped magnetic poles 28 at the other end portion in the axial direction (the end portion on the second rotor core 22 side and the right end portion in FIG. 3). ) Second positioning recess 32. The second positioning recesses 32 are formed at equal intervals (30 ° intervals) in the circumferential direction, and are formed at the center between the first positioning recesses 31 adjacent in the circumferential direction. Accordingly, the first positioning recesses 31 and the second positioning recesses 32 are alternately formed in the circumferential direction and are formed at 15 ° intervals.

  Each second positioning recess 32 has the same shape as the first positioning recess 31. However, the second positioning recess 32 has an axial opening direction opposite to that of the first positioning recess 31. Each of the second positioning recesses 32 penetrates the other axial end of the rotor insulating member 23 in the radial direction and has the same shape as the first penetration 31a, and the bottom surface of the second penetration 32a. To the one end side in the axial direction of the rotor insulating member 23 (that is, the first rotor core 21 side), and a second recessed portion 32b having the same shape as the first recessed portion 31b. And the 2nd positioning recessed part 32 becomes a shape corresponding to the shape of the inner surface of the 2nd rotor core 22 in the 2nd rotor side claw-shaped magnetic pole 28, and the both-sides surface of the circumferential direction of the 2nd rotor side claw-shaped magnetic pole 28. ing.

  As shown in FIGS. 2 and 3, the first rotor core 21 and the second rotor core 22 are overlapped in the axial direction such that the tips of the magnetic pole portions 26 b and 28 b face in opposite directions, and each first magnetic pole portion Each 2nd magnetic pole part 28b is arrange | positioned between the circumferential directions of 26b. Further, a rotor insulating member 23 is interposed between the first rotor core 21 and the second rotor core 22, specifically, between the first rotor side claw-shaped magnetic pole 26 and the second rotor side claw-shaped magnetic pole 28. The twelve first rotor side claw-shaped magnetic poles 26 of the first rotor core 21 are respectively inserted into the first positioning recesses 31 of the rotor insulating member 23. Each of the first rotor-side claw-shaped magnetic poles 26 has a first radially extending portion 26a disposed in the first through portion 31a and a first magnetic pole portion 26b disposed in the first recessed portion 31b. ing. Each first rotor-side claw-shaped magnetic pole 26 abuts in the circumferential direction on the inner side surfaces 31 c on both sides in the circumferential direction of the first positioning recess 31. Thus, the first rotor-side claw-shaped magnetic pole 26 is engaged with the first positioning recess 31 (that is, the rotor insulating member 23 is engaged with the first rotor-side claw-shaped magnetic pole 26 so as not to be relatively movable in the circumferential direction). The first rotor core 21 and the rotor insulating member 23 are not rotatable relative to each other in the circumferential direction. Similarly, the twelve second rotor-side claw-shaped magnetic poles 28 of the second rotor core 22 are respectively inserted into the second positioning recesses 32 of the rotor insulating member 23. Each second rotor-side claw-shaped magnetic pole 28 has a second radially extending portion 28a disposed in the second penetrating portion 32a and a second magnetic pole portion 28b disposed in the second recessed portion 32b. ing. Each of the second rotor-side claw-shaped magnetic poles 28 is in contact with the inner side surfaces 32c on both sides in the circumferential direction of the second positioning recess 32 in the circumferential direction. Thus, the second rotor-side claw-shaped magnetic pole 28 engages with the second positioning recess 32 (that is, the rotor insulating member 23 engages with the second rotor-side claw-shaped magnetic pole 28 so as not to move relative to the circumferential direction). The second rotor core 22 and the rotor insulating member 23 are not relatively rotatable in the circumferential direction.

  The first magnetic pole portions 26b inserted into the first positioning recesses 31 and the second magnetic pole portions 28b inserted into the second positioning recesses 32 are alternately arranged in the circumferential direction and are equally spaced in the circumferential direction (15 °). (Interval). Further, the outer peripheral surface of the first rotor core 21 (end surface on the radially outer side of the first rotor-side claw-shaped magnetic pole 26), the outer peripheral surface of the second rotor core 22 (end surface on the radially outer side of the second rotor-side claw-shaped magnetic pole 28), and The outer peripheral surface of the rotor insulating member 23 is flush. Furthermore, the axial end surface of the first rotor core 21 opposite to the second rotor core 22 and the axial end surface of the rotor insulating member 23 are located in the same plane. Similarly, the axial end surface of the second rotor core 22 opposite to the first rotor core 21 and the other axial end surface of the rotor insulating member 23 are located in the same plane. The gap between the first rotor-side claw-shaped magnetic poles 26 adjacent in the circumferential direction, the gap between the second rotor-side claw-shaped magnetic poles 28 adjacent in the circumferential direction, and the first magnetic pole part 26b and the second magnetic pole part 28b. The gap between them is filled with the rotor insulating member 23.

  Further, in the assembled state of the first and second rotor cores 21 and 22, the first rotor core base 25 and the second rotor core base 27 are parallel to each other, and the field magnet 24 is disposed therebetween. The field magnet 24 is a disk-shaped permanent magnet made of, for example, a ferrite magnet. A through hole 24 a through which the rotary shaft 12 (see FIG. 1) is inserted is formed at the center position of the field magnet 24. One end surface 24b of the field magnet 24 abuts on the inner side surface 25b of the first rotor core base 25 and the other end surface 24c of the field magnet 24 abuts on the inner side surface 27b of the second rotor core base 27, respectively. 24 is clamped and fixed between the first rotor core base 25 and the second rotor core base 27 in the axial direction. The outer diameter of the field magnet 24 is set so as to coincide with the outer diameters of the rotor core bases 25 and 27.

  The field magnet 24 is magnetized in the axial direction so that the first rotor core base 25 side is an N pole and the second rotor core base 27 side is an S pole. Therefore, by this field magnet 24, each first rotor side claw-shaped magnetic pole 26 of the first rotor core 21 functions as an N pole, and each second rotor side claw-shaped magnetic pole 28 of the second rotor core 22 functions as an S pole. .

  As described above, each rotor portion Ru, Rv, Rw having a so-called Landell-type structure using the field magnet 24 includes a first rotor-side claw-shaped magnetic pole 26 that is an N pole and a second rotor side that is an S pole. The claw-shaped magnetic poles 28 are alternately arranged in the circumferential direction, and the number of poles is 24 (the number of pole pairs is 12).

Next, the laminated structure of the rotor portions Ru, Rv, and Rw of each phase will be described.
The U-phase rotor portion Ru, the V-phase rotor portion Rv, and the W-phase rotor portion Rw are stacked in the axial direction to constitute the rotor 13.

  Here, the middle-stage V-phase rotor portion Rv is laminated face down with respect to the upper U-phase rotor portion Ru and the lower W-phase rotor portion Rw. That is, the second rotor core bases 27 are adjacent to each other in the axial direction between the U-V phases, and the first rotor core bases 25 are adjacent to each other in the axial direction between the V-W phases.

  Thereby, the magnetization directions of the U-phase and W-phase field magnets 24 are the same direction (upward in FIG. 2), and the magnetization directions of the V-phase field magnets 24 are the U-phase and W-phase field magnets. The direction is opposite to the magnetization direction of 24. More specifically, the U-phase and V-phase field magnets 24 face each other through two second rotor core bases 27 adjacent to each other. Further, the N-poles of the V-phase and W-phase field magnets 24 face each other through two adjacent first rotor core bases 25. That is, the magnetization directions of the field magnets 24 of the rotor portions Ru, Rv, and Rw are opposite to the magnetization directions of adjacent phases.

  Further, the protruding directions in the axial direction of the first magnetic pole portions 26b (first rotor side claw-shaped magnetic poles 26) of the U-phase rotor portion Ru and the W-phase rotor portion Rw are the same direction (downward in FIG. 2). . On the other hand, the protruding direction in the axial direction of the first magnetic pole part 26b (first rotor side claw-shaped magnetic pole 26) of the V-phase rotor part Rv is the first magnetic pole part of the U-phase rotor part Ru and the W-phase rotor part Rw. It is opposite to the protruding direction of 26b in the axial direction (upward in FIG. 2).

  Similarly, the protruding directions in the axial direction of the second magnetic pole portions 28b (second rotor-side claw-shaped magnetic poles 28) of the U-phase rotor portion Ru and the W-phase rotor portion Rw are the same direction (upward in FIG. 2). The protrusion direction of the second magnetic pole portion 28b of the V-phase rotor portion Rv is opposite to the direction (downward in FIG. 2).

  Further, the U-phase rotor portion Ru, the V-phase rotor portion Rv, and the W-phase rotor portion Rw are stacked with a phase shift of 60 ° in terms of electrical angle. That is, the V-phase rotor portion Rv is arranged such that its magnetic pole is out of phase by 60 ° in the clockwise direction with respect to the magnetic pole of the U-phase rotor portion Ru. Further, the W-phase rotor portion Rw is arranged such that its magnetic pole is out of phase by 60 ° in the clockwise direction with respect to the magnetic pole of the V-phase rotor portion Rv.

[Structure of stator]
As shown in FIGS. 1, 2, and 4, the stator 14 disposed on the outer side in the radial direction of the rotor 13 is a three-phase (U-phase) layered in the axial direction corresponding to each rotor portion Ru, Rv, Rw. , V-phase and W-phase) stator portions Su, Sv, Sw. 4 and 5, each of the stator portions Su, Sv, Sw has substantially the same configuration, and the stator insulation interposed between the first stator core 41 and the second stator core 42 and the first and second stator cores 41, 42. The member 43 includes a winding 44 disposed between the first and second stator cores 41 and 42.

  As shown in FIG. 5, the first stator core 41 has an annular first stator core base 45. The first stator core base 45 has a plate shape perpendicular to the axial direction. The first stator core base 45 has a cylindrical cylindrical wall 45a extending in the axial direction from the outer peripheral edge thereof. Furthermore, twelve first stator side claw-shaped magnetic poles 46 are provided at equal intervals (30 ° intervals) in the circumferential direction on the inner peripheral edge of the first stator core base 45.

  Each of the first stator side claw-shaped magnetic poles 46 includes a first radially extending portion 46a extending radially inward from the inner peripheral surface of the first stator core base 45, and a distal end portion (radial direction) of the first radially extending portion 46a. The first magnetic pole portion 46b extends in the axial direction from the inner end portion. The first stator-side claw-shaped magnetic pole 46 may be formed by bending the first magnetic pole part 46b at a right angle with respect to the first radial extension part 46a, or may be formed by casting in the first radial direction. The portion 46a and the first magnetic pole portion 46b may be integrally formed.

  The first radially extending portion 46a is formed in a trapezoidal shape whose width in the circumferential direction becomes narrower toward the radially inner side when viewed from the axial direction. Further, the first magnetic pole portion 46b is formed in a trapezoidal shape whose width in the circumferential direction becomes narrower toward the tip as viewed from the radial direction. The first stator side claw-shaped magnetic pole 46 has a symmetrical shape with a plane passing through the center in the circumferential direction and orthogonal to the circumferential direction as a symmetry plane.

  The second stator core 42 has the same configuration as the first stator core 41, and includes a second stator core base 47 and twelve second stator side claw-shaped magnetic poles 48. That is, the second stator core base 47 has a cylindrical wall 47a similar to the cylindrical wall 45a, and has the same shape as the first stator core base 45. Further, the second stator side claw-shaped magnetic pole 48 composed of the second radially extending portion 48a and the second magnetic pole portion 48b is a first composed of the first radially extending portion 46a and the first magnetic pole portion 46b. The stator side claw-shaped magnetic pole 46 has the same shape.

  As shown in FIGS. 4 to 7, the stator insulating member 43 is formed of, for example, an insulating resin material and has an annular portion 51 that forms an annular shape. The inner diameter of the annular portion 51 is formed to be equal to the inner diameter of the first stator core 41 (same as the inner diameter of the second stator core 42). The radial thickness of the annular portion 51 is formed to be equal to the radial thickness of the first magnetic pole portion 46b (the same as the radial thickness of the second magnetic pole portion 48b). The axial length of the annular portion 51 is the axial length of the first stator core 41 and the second stator core 42 assembled to each other (the same as the axial length of each of the stator portions Su, Sv, Sw). Are equally formed.

  One end of the annular portion 51 in the axial direction (the end on the first stator core 41 side and the left end in FIG. 5) has the same number (that is, 12) of first stator side claw-shaped magnetic poles 46 as the first. The extending portion 52 is integrally formed. The twelve first extending portions 52 are formed at equal intervals (30 ° intervals) in the circumferential direction.

  Each first extending portion 52 extends radially outward from the annular portion 51. The circumferential width of each first extending portion 52 is formed to be equal to the circumferential width of the space between the first radially extending portions 46 a in the first stator core 41. Further, the length in the radial direction of each first extending portion 52 is formed to be equal to the length in the radial direction of the first stator side claw-shaped magnetic pole 46. Further, the length (thickness) in the axial direction of each first extending portion 52 is formed to be equal to the length (thickness) in the axial direction of the first radially extending portion 46a. And each 1st extending part 52 has comprised the shape seen from the axial direction substantially square shape.

  In the stator insulating member 43, the space between the first extending portions 52 adjacent in the circumferential direction corresponds to the outer shape of the first stator side claw-shaped magnetic pole 46, that is, in the circumferential direction of the first stator side claw-shaped magnetic pole 46. The first positioning recesses 53 have inner peripheral surfaces corresponding to the shapes of both side surfaces and the front end surface (front end surface in the axial direction) of the first magnetic pole portion 46b. The twelve first positioning recesses 53 are provided at equal intervals (30 ° intervals) in the circumferential direction. Each first positioning recess 53 reaches the annular portion 51 in the axial direction between the first extending portions 52 adjacent in the circumferential direction. A portion of each first positioning recess 53 provided in the annular portion 51 is recessed so as to form a rectangular shape when viewed from the radial direction, and penetrates the annular portion 51 in the radial direction. Further, the axial depth of each first positioning recess 53 is formed to be equal to the axial length of the first stator side claw-shaped magnetic pole 46. Furthermore, the circumferential width of each first positioning recess 53 is formed to be equal to the circumferential width of the first stator side claw-shaped magnetic pole 46. And the inner side surface 53a of the both sides of the circumferential direction in the 1st positioning recessed part 53 has comprised the planar shape which extends in parallel with an axial direction and follows a radial direction.

  Further, the same number as the second stator side claw-shaped magnetic poles 48 (that is, 12 pieces) is provided at the other axial end portion of the annular portion 51 (the end portion on the second stator core 42 side and the right end portion in FIG. 5). The second extending portion 54 is integrally formed. The twelve second extending portions 54 are formed at equal intervals (30 ° intervals) in the circumferential direction. Each of the second extending portions 54 is formed at a center position between the first extending portions 52 adjacent in the circumferential direction. Therefore, in the stator insulating member 43, twelve second extending portions 54 are formed so as to be shifted by 15 ° in the circumferential direction with respect to the twelve first extending portions 52. Each second extending portion 54 has the same shape as the first extending portion 52.

  Further, in the stator insulating member 43, the space between the second extending portions 54 adjacent in the circumferential direction corresponds to the outer shape of the second stator side claw-shaped magnetic pole 48, that is, in the circumferential direction of the second stator side claw-shaped magnetic pole 48. The second positioning recesses 55 have inner peripheral surfaces corresponding to the shapes of both side surfaces and the tip surface (axial tip surface) of the second magnetic pole portion 48b. The second positioning recesses 55 are formed at regular intervals (30 ° intervals) in the circumferential direction. Each of the second positioning recesses 55 is formed at a center position between the first positioning recesses 53 adjacent in the circumferential direction. Accordingly, in the stator insulating member 43, twelve second positioning recesses 55 are formed by being shifted by 15 ° in the circumferential direction with respect to the twelve first positioning recesses 53, and the first positioning recess 53 and the second positioning recesses are formed. 55 are alternately formed in the circumferential direction. Each second positioning recess 55 has the same shape as the first positioning recess 53. However, the second positioning recess 55 has an axial opening direction opposite to that of the first positioning recess 53.

  As shown in FIGS. 4 and 5, the first stator core 41 and the second stator core 42 are overlapped so that the tips of the magnetic pole portions 46b and 48b face in opposite directions to each other, and the periphery of each first magnetic pole portion 46b. Each second magnetic pole part 48b is disposed between the directions. Further, a stator insulating member 43 is interposed between the first stator core 41 and the second stator core 42, specifically, between the first stator side claw-shaped magnetic pole 46 and the second stator side claw-shaped magnetic pole 48. As shown in FIGS. 4 and 7, the twelve first stator side claw-shaped magnetic poles 46 of the first stator core 41 are inserted into the first positioning recesses 53 of the stator insulating member 43, respectively. Further, the first stator side claw-shaped magnetic poles 46 are in contact with the inner side surfaces 53 a on both sides in the circumferential direction of the first positioning recess 53 in the circumferential direction. Thus, the first stator side claw-shaped magnetic pole 46 is engaged with the first positioning recess 53 (that is, the stator insulating member 43 is engaged with the first stator side claw-shaped magnetic pole 46 so as not to be relatively movable in the circumferential direction). The first stator core 41 and the stator insulating member 43 are not relatively rotatable in the circumferential direction. As shown in FIGS. 4 and 5, the twelve second stator side claw-shaped magnetic poles 48 of the second stator core 42 are respectively inserted into the second positioning recesses 55 of the stator insulating member 43. Further, each of the second stator side claw-shaped magnetic poles 48 is in contact with the inner side surfaces 55a on both sides in the circumferential direction of the second positioning recess 55 in the circumferential direction. As described above, the second stator side claw-shaped magnetic pole 48 is engaged with the second positioning recess 55 (that is, the stator insulating member 43 is engaged with the second stator side claw-shaped magnetic pole 48 so as not to be relatively movable in the circumferential direction). The second stator core 42 and the stator insulation member 43 are not relatively rotatable in the circumferential direction.

  The first magnetic pole portion 46b inserted into the first positioning recess 53 and the second magnetic pole portion 48b inserted into the second positioning recess 55 are alternately arranged in the circumferential direction and at equal intervals in the circumferential direction (this embodiment) It is located at 15 ° intervals in the form. Further, the inner peripheral surface of the first stator core 41 (the tip surface on the radially inner side of the first stator side claw-shaped magnetic pole 46) and the inner peripheral surface of the second stator core 42 (the radially inner side of the second stator side claw-shaped magnetic pole 48). The front end surface) and the inner peripheral surface of the stator insulating member 43 (the inner peripheral surface of the annular portion 51) are flush with each other. Further, the axial end surface of the first stator core 41 opposite to the second stator core 42 and the axial end surface of the stator insulating member 43 are located in the same plane. Similarly, the axial end surface of the second stator core 42 opposite to the first stator core 41 and the other axial end surface of the stator insulating member 43 are located in the same plane. The gap between the first stator side claw-shaped magnetic poles 46 adjacent in the circumferential direction, the gap between the second stator side claw-shaped magnetic poles 48 adjacent in the circumferential direction, and the first magnetic pole part 46b and the second magnetic pole part 48b. A gap therebetween is filled with the stator insulating member 43.

  Further, in the assembled state of the first and second stator cores 41 and 42, the first stator core base 45 and the second stator core base 47 are parallel to each other. Furthermore, the cylindrical walls 45a and 47a of the first and second stator core bases 45 and 47 are in contact with each other in the axial direction to form outer peripheral walls of the stator portions Su, Sv, and Sw. A winding 44 having an annular shape in the circumferential direction is arranged in the space between the axial directions of the first and second stator core bases 45 and 47 on the inner peripheral side of the cylindrical walls 45a and 47a.

  The stator portions Su, Sv, Sw configured as described above are so-called Randel types having 24 poles that excite the first and second stator side claw-shaped magnetic poles 46, 48 to different magnetic poles from time to time by the winding 44. (Claw pole type) structure.

Next, the laminated structure of the stator portions Su, Sv, Sw of each phase will be described.
A U-phase stator portion Su, a V-phase stator portion Sv, and a W-phase stator portion Sw are sequentially stacked in the axial direction to constitute the stator 14. Further, the stator portions Su, Sv, Sw are stacked such that the first stator core base 45 and the second stator core base 47 are alternately arranged in the axial direction.

  Further, the U-phase stator portion Su, the V-phase stator portion Sv, and the W-phase stator portion Sw are stacked with a phase difference of 60 ° in terms of electrical angle. That is, the V-phase stator portion Sv is arranged such that its magnetic pole is out of phase by 60 ° in the clockwise direction with respect to the magnetic pole of the U-phase stator portion Su. In addition, the W-phase stator portion Sw is arranged such that its magnetic pole is out of phase by 60 ° in the clockwise direction with respect to the magnetic pole of the V-phase stator portion Sv.

Next, the operation of the motor 11 configured as described above will be described.
As shown in FIG. 1, in the motor 11, when a three-phase AC voltage is applied to the stator 14, the U-phase power supply voltage is applied to the winding 44 of the U-phase stator portion Su, and the winding 44 of the V-phase stator portion Sv is applied. The V-phase power supply voltage is applied to the winding 44 of the W-phase stator section Sw, and the W-phase power supply voltage is applied to the winding 44 of the W-phase stator unit Sw. As a result, a rotating magnetic field is generated in the stator 14 and the rotor 13 is driven to rotate.

  As shown in FIGS. 2 and 3, the first rotor-side claw-shaped magnetic poles 26 of the first rotor core 21 are in the first positioning recesses 31 of the rotor insulating member 23 in the rotor portions Ru, Rv, Rw of the respective phases. By contacting the inner side surfaces 31c on both sides in the circumferential direction, the rotor insulating member 23 is engaged with the rotor insulating member 23 so as not to be relatively movable in the rotational direction. Further, in each phase of the rotor portions Ru, Rv, Rw, the second rotor-side claw-shaped magnetic poles 28 of the second rotor core 22 are formed on the inner side surfaces 32c on both sides in the circumferential direction of the second positioning recess 32 of the rotor insulating member 23. By abutting, the rotor insulating member 23 is engaged so as not to be relatively movable in the rotational direction. Therefore, in the rotor portions Ru, Rv, and Rw of each phase, the first rotor core 21 and the second rotor core 22 are positioned in the rotational direction by the rotor insulating member 23.

  As shown in FIGS. 4 and 5, the first stator side claw-shaped magnetic poles 46 of the first stator core 41 are connected to the first positioning recesses 53 of the stator insulating member 43 in the stator portions Su, Sv, Sw of each phase. By being in contact with the inner side surfaces 53a on both sides in the circumferential direction, the stator insulating member 43 is engaged with the stator insulating member 43 so as not to be relatively movable. Further, in the stator portions Su, Sv, Sw of each phase, the respective second stator side claw-shaped magnetic poles 48 of the second stator core 42 are formed on the inner side surfaces 55a on both sides in the circumferential direction of the second positioning recess 55 of the stator insulating member 43. By abutting, the stator insulating member 43 is engaged so as not to be relatively movable in the rotational direction. Therefore, in the stator portions Su, Sv, Sw of each phase, the first stator core 41 and the second stator core 42 are positioned in the rotational direction by the stator insulating member 43.

Next, characteristic effects of the present embodiment will be described.
(1) The rotor insulating member 23 is engaged with the twelve first rotor-side claw-shaped magnetic poles 26 of the first rotor core 21 and the twelve second rotor-side claw-shaped magnetic poles 28 of the second rotor core so as not to move relative to each other in the circumferential direction. Match. Thereby, the rotor insulating member 23 positions the first rotor core 21 and the second rotor core 22 in the rotation direction. Therefore, in the rotor portions Ru, Rv, and Rw of the rotor 13, the rotational displacement between the first rotor core 21 and the second rotor core 22 can be suppressed by the rotor insulating member 23. Further, the stator insulating member 43 is engaged with the twelve first stator side claw-shaped magnetic poles 46 of the first stator core 41 and the twelve second stator side claw-shaped magnetic poles 48 of the second stator core 42 so as not to be relatively movable in the circumferential direction. Match. Thereby, the stator insulating member 43 positions the first stator core 41 and the second stator core 42 in the rotation direction. Accordingly, in each stator portion Su, Sv, Sw of the stator 14, the rotational displacement between the first stator core 41 and the second stator core 42 can be suppressed by the stator insulating member 43. Therefore, disturbance of the magnetic flux waveform can be suppressed. As a result, it is possible to suppress the occurrence of vibration and noise due to the disturbance of the magnetic flux waveform.

(2) In each rotor part Ru, Rv, Rw, scattering of the field magnet 24 when the field magnet 24 is damaged can be prevented by the rotor insulating member 23.
(3) The first rotor core 21 and the second rotor core 22 can be easily insulated by the rotor insulating member 23. Further, the first stator core 41 and the second stator core 42 can be easily insulated by the stator insulating member 43.

  (4) Since the rotor insulating members 23 are provided in the rotor portions Ru, Rv, and Rw of the respective phases, the first rotor core 21 and the second rotor core 22 are connected when the rotor portions Ru, Rv, and Rw of the respective phases are assembled. It is not necessary to use a jig for positioning in the rotation direction. Further, since the stator insulating members 43 are provided in the stator portions Su, Sv, Sw of each phase, the first stator core 41 and the second stator core 42 are rotated when the stator portions Su, Sv, Sw of each phase are assembled. It is not necessary to use a jig for positioning in the direction. Therefore, the assembly of the rotor parts Ru, Rv, Rw and the stator parts Su, Sv, Sw is suppressed from being complicated, and the assembly of the rotor parts Ru, Rv, Rw and the stator parts Su, Sv, Sw is performed. It can be done easily.

(Second Embodiment)
Hereinafter, a second embodiment of the multi-rundel motor will be described. In the second embodiment, the same components as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.

  A motor unit M2 shown in FIG. 8A is provided in the motor 11 instead of each of the motor units Mu, Mv, and Mw of the first embodiment. The motor part M2 includes a rotor part R2 fixed to the rotary shaft 12 (not shown in FIG. 8, refer to FIG. 1), a stator part S2 disposed on the outer periphery of the rotor part R2 and facing the rotor part R2 in the radial direction. It has.

  As shown in FIGS. 8A and 8B, the rotor portion R2 includes a first rotor core 21, a second rotor core 22, and a field magnet 24 (not shown in FIG. 8, refer to FIG. 3). The rotor insulating member 61 is interposed between the first and second rotor cores 21 and 22. That is, the rotor portion R2 is configured to include the rotor insulating member 61 instead of the rotor insulating member 23 in each of the rotor portions Ru, Rv, and Rw of the first embodiment.

  The rotor insulating member 61 is configured by adding a rotor-side sliding contact portion 62 to the rotor insulating member 23 of the first embodiment. More specifically, the rotor insulating member 61 is formed of, for example, an insulating resin material and has an annular shape. In the rotor insulating member 61, the rotor-side slidable contact portion 62 includes the outer peripheral surface of the first rotor core 21 (that is, the radially outer surface of the first rotor-side claw-shaped magnetic pole 26) and the outer peripheral surface of the second rotor core 22 (that is, the first outer surface). 2 is a portion protruding radially outward from the radially outer surface of the rotor-side claw-shaped magnetic pole 28 (see FIG. 2). The rotor side sliding contact portion 62 has a cylindrical shape. Further, the radial thickness of the rotor side sliding contact portion 62 is substantially equal to the half length of the distance between the rotor side claw-shaped magnetic poles 26 and 28 and the stator side claw-shaped magnetic poles 46 and 48 facing in the radial direction. Is formed. Furthermore, the axial length of the rotor-side sliding contact portion 62 is formed to be equal to the axial length of the first rotor core 21 and the second rotor core 22 assembled together (that is, the axial length of the rotor portion R2). Has been. Further, the outer peripheral surface of the rotor side sliding contact portion 62 has a cylindrical shape that is coaxial with the first and second rotor core bases 25 and 27. In the rotor portion R <b> 2, the outer peripheral surface of the first rotor core 21 and the outer peripheral surface of the second rotor core 22 are covered with the rotor side sliding contact portion 62. The outer peripheral surface of the first rotor core 21 (the radially outer surface of the first rotor-side claw-shaped magnetic pole 26) and the outer peripheral surface of the second rotor core 22 (the radially outer surface of the second rotor-side claw-shaped magnetic pole 28) are on the rotor side. It is in contact with the sliding contact portion 62.

  The stator portion S2 includes a first stator core 41, a second stator core 42, a winding 44 (not shown in FIG. 8, refer to FIG. 5), and stator insulation interposed between the first and second stator cores 41, 42. It is comprised from the member 71. FIG. That is, the stator portion S2 is configured to include a stator insulating member 71 in place of the stator insulating member 43 in each of the stator portions Su, Sv, Sw of the first embodiment.

  The stator insulating member 71 has a configuration in which a stator side sliding contact portion 72 is added to the stator insulating member 43 of the first embodiment. More specifically, the stator insulating member 71 is formed of, for example, an insulating resin material and has an annular shape. In the stator insulating member 71, the stator side sliding contact portion 72 includes an inner peripheral surface of the first stator core 41 (that is, a radial inner surface of the first stator side claw-shaped magnetic pole 46) and an inner peripheral surface of the second stator core 42 ( That is, it is a portion protruding radially inward from the radially inner surface of the second stator side claw-shaped magnetic pole 48. The stator side sliding contact portion 72 has a cylindrical shape. The thickness in the radial direction of the stator side sliding contact portion 72 is substantially equal to half the distance between the rotor side claw-shaped magnetic poles 26 and 28 and the stator side claw-shaped magnetic poles 46 and 48 facing in the radial direction. Is formed. Furthermore, the axial length of the stator side sliding contact portion 72 is formed to be equal to the axial length of the first stator core 41 and the second stator core 42 assembled together (that is, the axial length of the stator portion S2). Has been. The inner peripheral surface of the stator side sliding contact portion 72 has a cylindrical shape that is coaxial with the first and second stator core bases 45 and 47. In the stator portion S <b> 2, the inner peripheral surface of the first stator core 41 and the inner peripheral surface of the second stator core 42 are covered by the stator side sliding contact portion 72. Further, the inner peripheral surface of the first stator core 41 (the radial inner surface of the first stator side claw-shaped magnetic pole 46) and the inner peripheral surface of the second stator core 42 (the radial inner surface of the second stator side claw-shaped magnetic pole 48) are It is in contact with the stator side sliding contact portion 72.

  In a state where the rotor portion R2 is assembled inside the stator portion S2, the rotor side sliding contact portion 62 and the stator side sliding contact portion 72 are opposed to each other in the radial direction. A gap between the first and second rotor cores 21 and 22 and the first and second stator cores 41 and 42 is filled by the rotor side sliding contact portion 62 and the stator side sliding contact portion 72. Furthermore, the outer peripheral surface of the rotor side sliding contact portion 62 and the inner peripheral surface of the stator side sliding contact portion 72 are in contact with each other in the rotational direction of the rotor portion R2. The rotor side sliding contact portion 62 and the stator side sliding contact portion 72 are preferably formed of a resin material that is in sliding contact with lubrication. Further, a lubricant may be applied between the rotor side sliding contact portion 62 and the stator side sliding contact portion 72.

  In the motor provided with the motor part M2, when the power supply voltage is applied to the stator part S2, the outer peripheral surface of the rotor side sliding contact part 62 and the inner peripheral surface of the stator side sliding contact part 72 are brought into sliding contact with each other. The rotor part R2 is rotated.

According to the second embodiment, in addition to the same effects as those of the first embodiment, the following effects can be obtained.
(1) The air gap between the rotor portion R2 and the stator portion S2 can be eliminated by the rotor side sliding contact portion 62 of the rotor insulating member 61 and the stator side sliding contact portion 72 of the stator insulating member 71. Since the rotor-side sliding contact portion 62 and the stator-side sliding contact portion 72 are in sliding contact with each other, the rotor portion R2 (rotor) is rotatably held with respect to the stator portion S2 (stator) by both sliding contact portions 62, 72. It is possible. Therefore, it is possible to reduce the number of parts that support the rotor provided with the rotor portion R2. Further, the sliding contact portions 62 and 72 can suppress the radial vibration of the rotor portion R2 (rotor) with respect to the stator portion S2 (stator), and can reduce the vibration of the rotor.

(Third embodiment)
Hereinafter, a third embodiment of the multi-rundel motor will be described. In the third embodiment, the same components as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.

  A stator 81 shown in FIG. 9 is provided in the motor 11 in place of the stator 14 of the first embodiment. Each stator part S3u, S3v, S3w which comprises the stator 81 is each provided with the stator insulation member 82 instead of the stator insulation member 43 of the said 1st Embodiment.

  The stator insulating member 82 is configured by adding a first engaging portion 83 and a second engaging portion 84 to the stator insulating member 43 of the first embodiment. More specifically, twelve first engaging portions 83 are recessed in one end surface (the upper end surface in FIG. 9) of the stator insulating member 82 in the axial direction. The first engaging portions 83 are formed at 12 locations that are equidistant (30 ° intervals) in the circumferential direction of the stator insulating member 82. In the present embodiment, the twelve first engaging portions 83 are formed on the inner peripheral edge portion of one end surface in the axial direction of the annular portion 51 (the upper end surface in FIG. 9). The twelve first engaging portions 83 are formed at positions on the radially inner side of the twelve first extending portions 52 at one end portion in the axial direction of the annular portion 51. Each first engagement portion 83 has a shape in which one end portion in the axial direction of the annular portion 51 is recessed in a rectangular parallelepiped shape in the axial direction, and opens in one of the axial direction and the radially inner side. ing.

  On the other end surface in the axial direction of the stator insulating member 82 (the lower end surface in FIG. 9), twelve second engaging portions 84 are projected. The second engaging portions 84 are formed at 12 locations that are equidistant (30 ° intervals) in the circumferential direction of the stator insulating member 82. In the present embodiment, the twelve second engaging portions 84 are formed on the inner peripheral edge portion of the other end surface in the axial direction of the annular portion 51 (the lower end surface in FIG. 9). The twelve second engaging portions 84 are radially inward of the twelve second extending portions 54 (not shown in FIG. 9; see FIG. 6) at the other axial end of the annular portion 51. It is formed in the position. Further, the twelve second engaging portions 84 are formed at positions shifted by 60 ° in electrical angle to one side in the circumferential direction (clockwise in FIG. 9) with respect to the twelve first engaging portions 83. ing. Each second engaging portion 84 is projected in a rectangular parallelepiped shape from the other end surface of the annular portion 51 in the axial direction. Each second engaging portion 84 has a rectangular parallelepiped shape corresponding to the inner peripheral surface of the first engaging portion 83.

  The U-phase stator portion S3u, the V-phase stator portion S3v, and the W-phase stator portion S3w each provided with the stator insulating member 82 as described above are a first stator core base 45 and a second stator core base 47 (not shown in FIG. 9). Are stacked in order in the axial direction so as to be alternately arranged in the axial direction. The second engaging portion 84 of the stator insulating member 82 provided in the U-phase stator portion S3u is the second engaging portion 84 of the stator insulating member 82 provided in the V-phase stator portion S3v axially adjacent to the U-phase stator portion S3u. The first engaging portion 83 is inserted and engaged from the axial direction. Thereby, the stator insulating member 82 of the U-phase stator portion S3u and the stator insulating member 82 of the V-phase stator portion S3v are engaged with each other so as not to be relatively movable in the circumferential direction. In each stator part S3u, S3v, since the 1st stator core 41, the 2nd stator core 42, and the stator insulation member 82 cannot be relatively rotated in the circumferential direction, the U-phase stator part S3u and the V-phase stator part S3v Positioning in the rotational direction is performed by the insulating member 82. Similarly, the second engaging portion 84 of the stator insulating member 82 provided in the V-phase stator portion S3v is connected to the stator insulating member 82 provided in the W-phase stator portion S3w axially adjacent to the V-phase stator portion S3v. The first engagement portion 83 is inserted and engaged from the axial direction. Thereby, the stator insulating member 82 of the V-phase stator portion S3v and the stator insulating member 82 of the W-phase stator portion S3w are engaged with each other so as not to be relatively movable in the circumferential direction. In each stator part S3v, S3w, since the 1st stator core 41 and the 2nd stator core 42, and the stator insulation member 82 cannot be relatively rotated in the circumferential direction, the V-phase stator part S3v and the W-phase stator part S3w Positioning in the rotational direction is performed by the insulating member 82.

  In each stator insulating member 82, the 12 first engaging portions 83 are formed at positions shifted by 60 ° in electrical angle with respect to the 12 second engaging portions 84, so that they are adjacent in the axial direction. The matching U-phase stator portion S3u and V-phase stator portion S3v, and the axially adjacent V-phase stator portion S3v and W-phase stator portion S3w are laminated with an electrical angle shifted by 60 ° in the circumferential direction.

According to the third embodiment, in addition to the same effects as in the first embodiment, the following effects can be obtained.
(1) The stator insulating member 82 having the first engaging portion 83 and the second engaging portion 84 rotates the stator portions S3u and S3v adjacent in the axial direction and the stator portions S3v and S3w adjacent in the axial direction. Directional positioning is made. Therefore, in the stator 81 configured by stacking the three stator portions S3u, S3v, S3w in the axial direction, the disturbance of the magnetic flux waveform caused by the positional deviation in the rotational direction between the stator portions S3u, S3v, S3w is suppressed. Can do. Therefore, it is possible to further suppress the generation of vibration and noise due to the disturbance of the magnetic flux waveform.

  (2) The first engaging portion 83 and the second engaging portion 84 that engage with the concave and convex portions of the stator portions S3u and S3v adjacent in the axial direction and the stator insulating members 82 of the stator portions S3v and S3w adjacent in the axial direction. Positioning of the stator portions S3u, S3v, S3w in the rotational direction can be performed with a simple configuration that is simply provided. Furthermore, complication of the shape of the stator insulating member 82 due to the provision of the first engaging portion 83 and the second engaging portion 84 is suppressed.

  (3) Since the first engaging portion 83 and the second engaging portion 84 can position the stator portions S3u, S3v, S3w in the rotational direction, the stator portions S3u, S3v, S3w can rotate in the rotational direction. Stator portions S3u, S3v, S3w can be easily assembled without using a jig for positioning.

  (4) The stator insulating member 82 is provided with a plurality of (that is, 12) first engaging portions 83 and second engaging portions 84. The stator insulating members 82 of the stator portions S3u and S3v adjacent in the axial direction are engaged with each other in a circumferentially immovable manner by the first engaging portion 83 and the second engaging portion 84 that are engaged at a plurality of locations. . Similarly, the stator insulating members 82 of the stator portions S3v and S3w adjacent in the axial direction are engaged with each other in a circumferentially immovable manner by the first engaging portion 83 and the second engaging portion 84 that are engaged at a plurality of locations. The Therefore, compared with the case where the first engaging portion 83 and the second engaging portion 84 are provided on the stator insulating member 82 one by one, the stator portions S3u, S3v adjacent in the axial direction and the stator portion adjacent in the axial direction. Positioning in the rotational direction between S3v and S3w can be performed more stably.

(Fourth embodiment)
Hereinafter, a fourth embodiment of the multi-rundel motor will be described. In the fourth embodiment, the same reference numerals are given to the same components as those in the first embodiment, and the description thereof is omitted.

  A stator portion S4 shown in FIG. 10 is provided in the motor 11 in place of each of the stator portions Su, Sv, Sw of the first embodiment. The stator portion S4 includes a stator insulating member 91 in place of the stator insulating member 43 of the first embodiment.

  The stator insulating member 91 has a configuration in which a winding holding portion 92 is added to the stator insulating member 43 of the first embodiment. More specifically, the stator insulating member 91 is generally thicker than the stator insulating member 43 so as to protrude toward the internal space X of the first stator core 41 and the second stator core 42 assembled together. ing. In the stator insulating member 91, the first and second stator cores 41, 42 are located on the first stator core 41 and the second stator core 42 rather than the side surfaces facing the space (internal space X) between the first and second stator cores 41, 42. A portion protruding toward the space is a winding holding portion 92.

  As shown in FIG. 11, the winding 44 disposed in the internal space X of the first and second stator cores 41 and 42 is sandwiched between winding holding portions 92 from both sides in the axial direction. The winding 44 comes into contact with the first stator side claw-shaped magnetic pole 46 and the second stator side claw-shaped magnetic pole 48 by disposing the radially inner portion of the winding 44 inside the winding holding portion 92. It is suppressed. In addition, since a radially inner portion of the winding 44 is disposed inside the winding holding portion 92, a gap is formed between the first and second stator core bases 45 and 47 and the winding 44. Therefore, the winding 44 is prevented from contacting the first and second stator cores 41 and 42.

According to the fourth embodiment, in addition to the same effects as in the first embodiment, the following effects can be obtained.
(1) The winding 44 disposed between the first stator core 41 and the second stator core 42 protrudes more toward the space between the stator cores 41 and 52 than the inner surfaces of the first and second stator cores 41 and 42. It contacts the winding holding part 92. Therefore, the winding 44 is difficult to contact the inner side surfaces of the first and second stator cores 41 and 42. Accordingly, the first and second stator cores 41 and 42 and the winding 44 can be insulated by the stator insulating member 91.

  (2) The winding holding portion 92 is formed by increasing the thickness of the stator insulating member 91 as a whole so as to protrude toward the space between the first and second stator cores 41 and 42. Therefore, complication of the shape of the stator insulating member 91 due to the provision of the winding holding portion 92 is suppressed.

(Fifth embodiment)
Hereinafter, a fifth embodiment of the multi-rundel motor will be described. In the fifth embodiment, the same components as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.

  A stator 101 shown in FIG. 12 is provided in the motor 11 in place of the stator 14 of the first embodiment. Each stator part S5u, S5v, S5w which comprises the stator 81 is each provided with the stator insulating member 102 instead of the stator insulating member 43 of the said 1st Embodiment. The U-phase stator portion S5u, the V-phase stator portion S5v, and the W-phase stator portion S5w have a first stator core base 45 and a second stator core base 47 (not shown in FIG. 12, refer to FIG. 5) alternately in the axial direction. They are stacked in order so that they are arranged. Furthermore, the U-phase stator portion S5u and the V-phase stator portion S5v adjacent in the axial direction, and the V-phase stator portion S5v and the W-phase stator portion S5w adjacent in the axial direction are shifted in the circumferential direction by 60 ° in electrical angle. Are stacked.

  The stator insulating member 102 has a configuration in which a winding guide groove 103 is added to the stator insulating member 43 of the first embodiment. The winding guide groove 103 is a groove that penetrates the stator insulating member 102 so as to communicate the space between the first and second stator cores 41 and 42 and the external space of the stator portions S5u, S5v, and S5w. In the present embodiment, in each stator insulating member 102, the winding guide groove 103 is formed from the base end portion (radially inner end portion) of the first extending portion 52 to the annular portion 51. . The winding guide groove 103 extends in the radial direction in the first extending portion 52, and extends in the axial direction in the annular portion 51.

  In each stator part S5u, S5v, S5w provided with the stator insulation member 102 having such a winding guide groove 103, the end part of the winding 44 arranged in the space between the first and second stator cores 41, 42 From the winding guide groove 103 to the outside of the stator portions S5u, S5v, S5w.

According to the fifth embodiment, in addition to the same effects as in the first embodiment, the following effects can be obtained.
(1) The end of the winding 44 can be easily pulled out of the stator 101 from the winding guide groove 103.

  (2) The winding guide groove 103 is a groove having a simple shape that penetrates the stator insulating member 102. Therefore, complication of the shape of the stator insulating member 102 due to the configuration for drawing the end of the winding 44 to the outside of the stator 101 is suppressed.

(Sixth embodiment)
Hereinafter, a sixth embodiment of the multi-rundel motor will be described. In the sixth embodiment, the same components as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.

  A stator 111 shown in FIG. 13 is provided in the motor 11 instead of the stator 14 of the first embodiment. Each stator part S6u, S6v, S6w which comprises the stator 111 is each provided with the stator insulation member 112 instead of the stator insulation member 43 of the said 1st Embodiment. In FIG. 13, the winding 44 is omitted.

  The stator insulating member 112 is configured by adding a first axial protrusion 113 and a second axial protrusion 114 to the stator insulating member 43 of the first embodiment. More specifically, the stator insulating member 112 has a length in the axial direction so that the stator insulating member 112 generally protrudes on both sides in the axial direction of the first and second stator cores 41 and 42 assembled to each other. It is formed long. In the stator insulating member 112 of the stator portion S6u, the portion protruding in the axial direction from the first stator core 41 toward the outside of the stator portion S6u (the portion protruding upward from the first stator core 41 in FIG. 13) is the first. It becomes the 1 axial direction protrusion part 113. FIG. In the stator insulating members 112 of the stator portions S6v and S6w, the same portion is the first axial protruding portion 113. Further, in the stator insulating member 112 of the stator portion S6u, a portion protruding in the axial direction from the second stator core 42 toward the outside of the stator portion S6u (portion protruding downward from the second stator core 42 in FIG. 13). A second axial protrusion 114 is formed. In the stator insulating members 112 of the stator portions S6v and S6w, the same portion is the second axial projecting portion 114.

  An axial end surface of the first axial protrusion 113 is a first contact surface 113 a that is perpendicular to the axial direction and is parallel to the first stator core base 45. The axial end surface of the second axial protrusion 114 is a second abutting surface 114 a that is perpendicular to the axial direction and is parallel to the second stator core base 47. The first contact surface 113a and the second contact surface 114a are parallel to each other.

  In the U-phase stator portion S6u, the V-phase stator portion S6v and the W-phase stator portion S6w each having the stator insulating member 112 as described above, the first stator core base 45 and the second stator core base 47 are alternately arranged in the axial direction. Are stacked in order. The axially adjacent U-phase stator portion S6u and V-phase stator portion S6v include the second contact surface 114a of the second axially projecting portion 114 of the stator insulating member 112 of the U-phase stator portion S6u and the V-phase. The stator part S6v is laminated in contact with the first contact surface 113a of the first axial protrusion 113 of the stator insulating member 112 of the stator part S6v. Therefore, the second stator core base 47 of the U-phase stator portion S6u and the first stator core base 45 of the V-phase stator portion S6v are provided with the first axial protrusion 113 and the second shaft interposed between the stator core bases 47, 45. It is spaced apart in the axial direction by the direction protrusion 114. Similarly, the V-phase stator portion S6v and the W-phase stator portion S6w that are adjacent in the axial direction are the second contact surface 114a of the second axial protrusion 114 of the stator insulating member 112 of the V-phase stator portion S6v, and W The phase stator portion S6w is laminated in contact with the first contact surface 113a of the first axial protrusion 113 of the stator insulating member 112 of the phase stator portion S6w. Therefore, the second stator core base 47 of the V-phase stator portion S6v and the first stator core base 45 of the W-phase stator portion S6w are provided with the first axial protrusion 113 and the second shaft interposed between the stator core bases 47, 45. It is spaced apart in the axial direction by the direction protrusion 114.

  The U-phase stator portion S6u and the V-phase stator portion S6v that are adjacent in the axial direction, and the V-phase stator portion S6v and the W-phase stator portion S6w that are adjacent in the axial direction are each shifted in the circumferential direction by 60 ° in electrical angle. Are stacked.

According to the sixth embodiment, in addition to the same effects as in the first embodiment, the following effects can be obtained.
(1) The second stator core 42 of the U-phase stator portion S6u and the first stator core 41 of the V-phase stator portion S6v that are adjacent in the axial direction are connected to the second axial protrusion 114 of the stator insulating member 112 of the U-phase stator portion S6u. And the first axial protrusion 113 of the stator insulating member 112 of the V-phase stator portion S6v can be easily separated in the axial direction. Similarly, the second stator core 42 of the V-phase stator portion S6v and the first stator core 41 of the W-phase stator portion S6w that are adjacent in the axial direction are connected to the second axial protrusion 114 of the stator insulating member 112 of the V-phase stator portion S6v. And the first axial protrusion 113 of the stator insulating member 112 of the W-phase stator portion S6w can be easily separated in the axial direction. Therefore, magnetic interference of each stator part S6u, S6v, S6w can be suppressed.

  (2) The first axial protrusion 113 and the second axial protrusion 114 have a simple configuration that protrudes more in the axial direction than the first and second stator cores 41 and 42. Therefore, the stator cores 41 and 42 adjacent in the axial direction of the stator portions S6u and S6v adjacent in the axial direction and the stator cores 41 and 42 adjacent in the axial direction of the stator portions S6v and S6w adjacent in the axial direction are separated in the axial direction. Complicating the shape of the stator insulating member 112 due to the provision of the configuration for suppressing the stator is suppressed.

In addition, you may change each said embodiment as follows.
In the third embodiment, the first engaging portion 83 and the second engaging portion 84 are provided on the stator insulating member 82 provided in the stator 81. However, you may provide the 1st engaging part 83 and the 2nd engaging part 84 in the rotor insulation member 23 with which the rotor 13 was equipped. In this case, the rotor insulating member 23 of the U-phase rotor portion Ru and the rotor insulating member 23 of the V-phase rotor portion Rv adjacent to the U-phase rotor portion Ru in the axial direction are engaged with the first engagement portion 83 and the second engagement. By engaging the portion 84 with the concave and convex portions, they are engaged so as not to be relatively movable in the circumferential direction. In addition, the rotor insulating member 23 of the V-phase rotor portion Rv and the rotor insulating member 23 of the W-phase rotor portion Rw adjacent to the V-phase rotor portion Rv in the axial direction include the first engaging portion 83 and the second engaging portion. 84 is engaged so as not to be relatively movable in the circumferential direction. In this way, the rotor insulating member 23 having the first engaging portion 83 and the second engaging portion 84 allows the rotor portions Ru and Rv adjacent to each other in the axial direction and the rotor portions Rv and Rw adjacent to each other in the axial direction. Positioning in the rotational direction is performed. Therefore, in the rotor 13 configured by laminating a plurality of rotor portions Ru, Rv, Rw in the axial direction, the magnetic flux waveform disturbance due to the positional deviation in the rotational direction between the rotor portions Ru, Rv, Rw is suppressed. Can do.

  In the third embodiment, the first engagement portion 83 is a recess that is recessed at one end in the axial direction of the annular portion 51, and the second engagement portion 84 is other than the axial direction of the annular portion 51. It is the convex part protrudingly provided by the edge part. However, the first engagement portion 83 may have a convex shape, and the second engagement portion 84 may have a concave shape. Further, the first engaging portion 83 and the second engaging portion 84 engage with each other, and the stator insulating members 82 of the stator portions S3u and S3v adjacent in the axial direction and the stator portion S3v adjacent in the axial direction. , S3w as long as it is in a shape that engages the stator insulating members 82 in the circumferential direction so as not to be relatively movable, the shape of the third embodiment is not necessarily required. For example, the first engaging portion 83 may be a concave portion having a cylindrical inner peripheral surface, and the second engaging portion 84 may be a columnar convex portion.

  In the third embodiment, the stator insulating member 82 includes twelve first engaging portions 83 and twelve second engaging portions 84. However, the number of the first engaging portions 83 and the second engaging portions 84 provided in the stator insulating member 82 is not limited to this. The stator insulating member 82 may be configured to include one first engaging portion 83 and one second engaging portion 84, or may be configured to include a plurality other than twelve. Further, the number of convex second engaging portions 84 may be smaller than the number of concave first engaging portions 83.

  -The formation position of the 1st engaging part 83 and the 2nd engaging part 84 in the stator insulation member 82 is not restricted to the formation position of the said 3rd Embodiment. The first engaging portion 83 and the second engaging portion 84 are positions that can be engaged with each other in the stator insulating members 82 of the stator portions S3u and S3v adjacent in the axial direction, and the stator portions S3v and S3w adjacent in the axial direction. What is necessary is just to form in the position which can be engaged in the stator insulation member 82. FIG. For example, the first engaging portion 83 is formed in the central portion in the radial direction of the first extending portion 52, and the second engaging portion 84 is formed in the central portion in the radial direction of the second extending portion 54. Also good.

  In the fourth embodiment, the winding holding portion 92 is provided by projecting the stator insulating member 91 entirely on the space side between the first and second stator cores 41 and 42 assembled to each other. However, the shape of the winding holding part 92 is not limited to this. The winding holding portion 92 can hold the winding 44 while preventing the winding 44 from contacting the first and second stator cores 41, 42 between the first and second stator cores 41, 42 assembled to each other. Any shape can be used. For example, the stator insulating member 91 is partially thickened toward the space between the first and second stator cores 41 and 42 assembled to each other. In the stator insulating member 91, the space between the first and second stator cores 41, 42 is closer to the side of the first and second stator cores 41, 42 facing the space between the first and second stator cores 41, 42. The protruding portion may be the winding holding portion 92.

  In the fifth embodiment, only one winding guide groove 103 is formed on the stator insulating member 102. However, a plurality of winding guide grooves 103 may be formed in the stator insulating member 102. In addition, the shape of the winding guide groove 103 is not limited to the shape of the fifth embodiment, but may be a shape that allows the end of the winding 44 to be drawn out from between the first and second stator cores 41 and 42. That's fine. For example, the winding guide groove 103 may be formed only in the annular portion 51, or may be formed across the annular portion 51 and the second extending portion 54.

  In the sixth embodiment, the first axial projection 113 and the second axial projection 114 are the first and second stator cores 41 and 42 in which both axial ends of the stator insulating member 112 are assembled to each other. It is provided by projecting entirely on both sides in the axial direction. However, the shape of the 1st axial direction protrusion part 113 and the 2nd axial direction protrusion part 114 is not restricted to the shape of the said 6th Embodiment. The first axial protrusion 113 and the second axial protrusion 114 are shaped so that the stator portions S6u, S6v, S6w can be stacked in the axial direction so that the first and second stator core bases 45, 47 are stacked in parallel. I just need it. For example, the first axial protrusion 113 and the second axial protrusion 114 are formed by partially protruding the stator insulating member 112 on both sides in the axial direction of the first and second stator cores 41 and 42 assembled to each other. It may be provided.

  In the sixth embodiment, the stator insulating member 112 has the first axial protrusion 113 and the second axial protrusion 114. However, the stator insulating member 112 may not necessarily include both the first axial protrusion 113 and the second axial protrusion 114. For example, the stator insulating member 112 may have a configuration including any one of the first axial protrusion 113 and the second axial protrusion 114. Even if it does in this way, the effect similar to the said 6th Embodiment can be acquired.

  In the sixth embodiment, the first axial protruding portion 113 and the second axial protruding portion 114 are provided on the stator insulating member 112 of each stator portion S6u, S6v, S6w. Similar axial protrusions may be provided on the rotor insulating members 23 of the respective rotor portions Ru, Rv, Rw. That is, you may comprise the rotor insulating member 23 so that it may protrude in the both sides of an axial direction rather than the 1st and 2nd rotor cores 21 and 22 piled up in the axial direction. In this way, the second rotor core 22 adjacent in the axial direction in the rotor portions Ru and Rv adjacent in the axial direction and the first rotor core 21 adjacent in the axial direction in the rotor portions Rv and Rw adjacent in the axial direction are The rotor insulating member 23 can be easily separated in the axial direction. Therefore, the magnetic interference of each rotor part Ru, Rv, Rw can be suppressed.

  The rotor insulating members 23 and 61 may be made of magnets. If it does in this way, it will become possible to control the flow of magnetic flux with rotor insulating members 23 and 61, and it will become possible to improve motor characteristics.

  In each of the above embodiments, the rotor insulating members 23 and 61 engage with the twelve first rotor-side claw-shaped magnetic poles 26 and the twelve second rotor-side claw-shaped magnetic poles 28 so as not to move relative to each other in the circumferential direction. However, the rotor insulating members 23, 61 may be engaged with at least one of the first rotor-side claw-shaped magnetic poles 26 and at least one of the second rotor-side claw-shaped magnetic poles 28 so as not to be relatively movable in the circumferential direction. .

  In each of the above embodiments, the stator insulating members 43, 71, 82, 91, 102, 112 are circumferentially connected to the 12 first stator side claw-shaped magnetic poles 46 and the 12 second stator side claw-shaped magnetic poles 48. Engage so that relative movement is impossible. However, the stator insulating members 43, 71, 82, 91, 102, 112 are immovable relative to the circumferential direction with at least one of the first stator side claw-shaped magnetic poles 46 and at least one of the second stator side claw-shaped magnetic poles 48. Anything that engages may be used.

  In the first embodiment, the motor 11 includes both the rotor insulating member 23 and the stator insulating member 43. However, the motor 11 may be configured to include only one of the rotor insulating member 23 and the stator insulating member 43. The same applies to the second to sixth embodiments.

  The first rotor-side claw-shaped magnetic pole 26 may be configured by only the first magnetic pole portion 26b that does not include the first radial extending portion 26a but extends from the first rotor core base 25 in the axial direction. Similarly, the second rotor-side claw-shaped magnetic pole 28 may be configured by only the second magnetic pole portion 28b extending in the axial direction from the second rotor core base 27 without the second radial extending portion 28a. .

  The first stator side claw-shaped magnetic pole 46 may be configured by only the first magnetic pole portion 46b extending in the axial direction from the first stator core base 45 without the first radial extending portion 46a. Similarly, the second stator side claw-shaped magnetic pole 48 may not be provided with the second radial extending portion 48a, but may be constituted only by the second magnetic pole portion 48b extending in the axial direction from the second stator core base 47. .

  The first and second rotor cores 21 and 22 may be formed by connecting a plurality of divided cores in the circumferential direction. The first and second stator cores 41 and 42 may be formed by connecting a plurality of divided cores in the circumferential direction.

  -The number of the 1st rotor side claw-shaped magnetic poles 26 which the 1st rotor core 21 has is not restricted to 12, and may change suitably. Similarly, the number of the second rotor side claw-shaped magnetic poles 28 included in the second rotor core 22 is not limited to 12 and may be changed as appropriate. Further, the number of the first stator side claw-shaped magnetic poles 46 included in the first stator core 41 is not limited to 12, and may be changed as appropriate. Similarly, the number of the second stator side claw-shaped magnetic poles 48 included in the second stator core 42 is not limited to 12, and may be changed as appropriate.

The field magnet 24 is not limited to a ferrite magnet. The field magnet 24 may be, for example, a samarium cobalt (SmCo) magnet or a neodymium magnet.
In the first embodiment, the rotor 13 is composed of three rotor parts Ru, Rv, Rw. The stator 14 is composed of three stator portions Su, Sv, Sw. However, the number of rotor portions constituting the rotor 13 is not limited to three and may be one or more. Further, the number of stator portions constituting the stator 14 is not limited to three and may be one or more. The same applies to the second, fourth, and fifth embodiments. In the third and sixth embodiments, the rotor 13 may be composed of a plurality of rotor portions, and the stator may be composed of a plurality of stator portions.

  In the first embodiment, the motor 11 is an inner rotor type motor in which the rotor 13 is disposed inside the stator 14. However, the first embodiment may be applied to an outer rotor type motor in which the rotor is disposed on the outer periphery of the stator. The same applies to the second to sixth embodiments.

-You may combine each said embodiment and each said modification suitably suitably.
Next, a technical idea that can be grasped from the above embodiments and each modified example will be added below.
(B) pre-Symbol rotor, wherein the rotor portion having a first and a second rotor core and the permanent magnet and the rotor insulation member is constituted by stacking a plurality of axially the rotor insulation member of each said rotor unit , characterized in that protrude to both sides in the axial direction than the first and second rotor core.

  According to this configuration, the rotor cores of the rotor portions adjacent in the axial direction can be easily separated in the axial direction by the rotor insulating member. Therefore, the magnetic interference of each rotor part can be suppressed.

(B) pre-Symbol rotor insulating member characterized by consisting of the magnet.

  According to this configuration, the magnetic flux flow can be controlled by the rotor insulating member, and the motor characteristics can be improved.

  DESCRIPTION OF SYMBOLS 13 ... Rotor, 14, 81, 101, 111 ... Stator, 21 ... 1st rotor core, 22 ... 2nd rotor core, 23, 61 ... Rotor insulation member, 24 ... Field magnet as permanent magnet, 26 ... As claw-shaped magnetic pole The first rotor side claw-shaped magnetic pole, 28 ... the second rotor side claw-shaped magnetic pole as a claw-shaped magnetic pole, 41 ... the first stator core, 42 ... the second stator core, 43, 71, 82, 91, 102, 112 ... the stator insulation Member, 44 ... winding, 46 ... first stator side claw-shaped magnetic pole as claw-shaped magnetic pole, 48 ... second stator side claw-shaped magnetic pole as claw-shaped magnetic pole, 62 ... rotor-side slidable contact portion as slidable contact portion, 72: Stator side sliding contact portion as sliding contact portion, 103 ... Winding guide groove, 113 ... First axial projection portion, 114 ... Second axial projection portion, Ru ... U phase rotor portion as rotor portion, Rv ... V phase b as rotor part , Rw ... W phase rotor as a rotor, R2 ... Rotor, Su, S3u, S5u, S6u ... U phase stator as a stator, Sv, S3v, S5v, S6v ... V phase as a stator Stator part, Sw, S3w, S5w, S6w ... W-phase stator part as a stator part, S2, S4 ... Stator part.

Claims (6)

A rotor having first and second rotor cores each having a plurality of claw-shaped magnetic poles arranged in the circumferential direction and stacked in the axial direction, and a permanent magnet disposed between the first and second rotor cores and magnetized in the axial direction. When,
A stator having first and second stator cores each having a plurality of claw-shaped magnetic poles arranged in the circumferential direction and stacked in the axial direction, and a winding disposed in the circumferential direction between the first and second stator cores. A multi-rundel motor with
A stator insulating member engaged with at least one of the claw-shaped magnetic poles of the first stator core and at least one of the claw-shaped magnetic poles of the second stator core so as to be relatively immovable in the circumferential direction;
The stator is configured by laminating a plurality of stator portions having the first and second stator cores, the windings, and the stator insulating member in the axial direction,
The stator insulating member is interposed between the first stator core and the second stator core of each stator portion,
The stator insulating member of each stator portion includes a first axial projecting portion projecting in an axial direction from the first stator core toward the outer side of the stator portion, and the second stator core toward the outer side of the stator portion. The first stator core and the second stator core of the stator portion adjacent to each other in the axial direction are separated from each other in the axial direction by having at least one of the second axial protrusions protruding in the axial direction. Multi-rundel type motor characterized by A rotor having first and second rotor cores each having a plurality of claw-shaped magnetic poles arranged in the circumferential direction and stacked in the axial direction, and a permanent magnet disposed between the first and second rotor cores and magnetized in the axial direction. When,
A stator having first and second stator cores each having a plurality of claw-shaped magnetic poles arranged in the circumferential direction and stacked in the axial direction, and a winding disposed in the circumferential direction between the first and second stator cores. A multi-rundel motor with
A rotor insulating member engaged with at least one of the claw-shaped magnetic poles of the first rotor core and at least one of the claw-shaped magnetic poles of the second rotor core so as to be relatively immovable in the circumferential direction;
The rotor is configured by laminating a plurality of rotor portions having the first and second rotor cores, the permanent magnets, and the rotor insulating member in the axial direction,
The rotor insulating member is interposed between the first rotor core and the second rotor core of each rotor part,
The multi-rundel type motor, wherein the rotor insulating members of the rotor portions adjacent to each other in the axial direction are engaged with each other so as not to move relative to each other in the circumferential direction. The multi-Randell type motor according to claim 1 or 2,
The stator moves in the circumferential direction relative to the first and second stator cores, the windings, at least one of the claw-shaped magnetic poles of the first stator core and at least one of the claw-shaped magnetic poles of the second stator core. A stator portion having a stator insulating member that is impossiblely engaged is configured by laminating a plurality of stator portions in the axial direction,
The stator insulating member is interposed between the first stator core and the second stator core of each stator portion,
The multi-rundel motor, wherein the stator insulating members of the stator portions adjacent to each other in the axial direction engage with each other so as not to be relatively movable in the circumferential direction. The multi-randel motor according to any one of claims 1 to 3,
The stator includes a stator insulating member that engages with at least one of the claw-shaped magnetic poles of the first stator core and at least one of the claw-shaped magnetic poles of the second stator core so as to be relatively immovable in the circumferential direction.
The stator is configured by laminating a plurality of stator portions having the first and second stator cores, the windings, and the stator insulating member in the axial direction,
The stator insulating member is interposed between the first stator core and the second stator core of each stator portion,
The stator insulating member protrudes to the space side between the first and second stator cores from the side surface of the first and second stator cores facing the space between the first and second stator cores. Multi-rundel motor. The multi-randel motor according to any one of claims 1 to 4,
The stator includes a stator insulating member that engages with at least one of the claw-shaped magnetic poles of the first stator core and at least one of the claw-shaped magnetic poles of the second stator core so as to be relatively immovable in the circumferential direction.
The stator is configured by laminating a plurality of stator portions having the first and second stator cores, the windings, and the stator insulating member in the axial direction,
The stator insulating member is interposed between the first stator core and the second stator core of each stator portion,
The multi-rundel type motor, wherein the stator insulating member has a winding guide groove through which an end of the winding is inserted. The multi-rundel motor according to any one of claims 1 to 5,
The rotor includes a rotor insulating member that engages with at least one of the claw-shaped magnetic poles of the first rotor core and at least one of the claw-shaped magnetic poles of the second rotor core so as not to move relative to each other in the circumferential direction;
The rotor is configured by laminating a plurality of rotor portions having the first and second rotor cores, the permanent magnets, and the rotor insulating member in the axial direction,
The stator includes a stator insulating member that engages with at least one of the claw-shaped magnetic poles of the first stator core and at least one of the claw-shaped magnetic poles of the second stator core so as not to move relative to each other in the circumferential direction; Facing radially,
The stator is configured by laminating a plurality of stator portions having the first and second stator cores, the windings, and the stator insulating member in the axial direction,
The rotor insulating member is interposed between the first rotor core and the second rotor core of each rotor portion, and
The stator insulating member is interposed between the first stator core and the second stator core of each stator portion,
The rotor insulating member and the stator insulating member have sliding contact portions that are in sliding contact with each other in the rotational direction between the first and second rotor cores and the first and second stator cores facing each other in the radial direction. Multi-rundel motor.