WO2021065462A1 - Rotary electric machine - Google Patents

Rotary electric machine Download PDF

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Publication number
WO2021065462A1
WO2021065462A1 PCT/JP2020/034859 JP2020034859W WO2021065462A1 WO 2021065462 A1 WO2021065462 A1 WO 2021065462A1 JP 2020034859 W JP2020034859 W JP 2020034859W WO 2021065462 A1 WO2021065462 A1 WO 2021065462A1
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WO
WIPO (PCT)
Prior art keywords
stator
axial direction
stator units
claw
claw magnetic
Prior art date
Application number
PCT/JP2020/034859
Other languages
French (fr)
Japanese (ja)
Inventor
司 浅利
浅野　能成
尚宏 木戸
茜 上田
寛 日比野
Original Assignee
ダイキン工業株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ダイキン工業株式会社 filed Critical ダイキン工業株式会社
Publication of WO2021065462A1 publication Critical patent/WO2021065462A1/en

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/12—Stationary parts of the magnetic circuit
    • H02K1/14—Stator cores with salient poles
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors

Definitions

  • This disclosure relates to rotary electric machines.
  • the axial size of the claw pole type motor increases by the amount of the connecting plate provided.
  • An object of the present disclosure is to provide a technology capable of miniaturizing a multi-phase claw pole type rotary electric machine.
  • a multi-phase rotary electric machine having a stator in which a plurality of claw pole type stator units are stacked in the axial direction.
  • the stator unit is arranged alternately in the circumferential direction with a winding wound in an annular shape, an iron core provided so as to surround the winding, and both ends of the iron core in the axial direction. It has a plurality of claw magnetic poles that are formed and protrude in the radial direction from each of both ends in the axial direction of the iron core toward the rotor.
  • At least one set of the combination of two stator units having the same phase adjacent to each other in the plurality of stator units is such that the claw magnetic poles of each other are arranged in a substantially mirror image relationship and each other.
  • the winding is wound in the opposite direction when viewed from a predetermined external terminal.
  • the motor has a magnetic flux of a claw magnetic pole formed on two stator cores facing each other even if the axial distance between two stator units of the same phase is relatively short.
  • the directions can be aligned substantially the same, and magnetic flux leakage can be suppressed. Therefore, the motor can be miniaturized.
  • a multi-phase rotary electric machine having a stator in which a plurality of claw pole type stator units are stacked in the axial direction.
  • the stator unit is arranged alternately in the circumferential direction with a winding wound in an annular shape, an iron core provided so as to surround the winding, and both ends of the iron core in the axial direction. It has a plurality of claw magnetic poles that are formed and protrude in the radial direction from each of both ends in the axial direction of the iron core toward the rotor.
  • At least one of the combinations of two stator units of the same phase adjacent in the axial direction among the plurality of stator units is a substantially mirror image at the axial ends of the iron cores facing each other.
  • the polarity of the magnetic poles due to the armature current of the claw magnetic poles arranged in relation is the same, A rotary electric machine is provided.
  • the motor has a magnetic flux of a claw magnetic pole formed on two stator cores facing each other even if the axial distance between two stator units of the same phase is relatively short.
  • the directions can be aligned substantially the same, and magnetic flux leakage can be suppressed. Therefore, the motor can be miniaturized.
  • the at least one set may have an axial distance between the iron cores of each other being zero.
  • the claw magnetic poles are a first claw magnetic pole portion that protrudes radially toward the rotor from one end portion in the axial direction of the iron core, and an axial direction of the iron core from the tip end portion of the first claw magnetic pole portion. It has a second claw magnetic pole portion that projects axially toward the other end, and has a second claw magnetic pole portion.
  • the at least one set may be in contact with each other at the tips of the second claw magnetic poles.
  • At least one set of the combination of two stator units of the same phase adjacent in the axial direction among the plurality of stator units is such that both ends of the windings are located on the inner peripheral portion and the outer peripheral portion.
  • the two ends of the inner peripheral portions of the windings may be connected to each other, or the other ends of the outer peripheral portions of the windings may be connected to each other.
  • FIG. 1 It is a perspective view which shows the outline of a motor. It is a perspective view which shows an example of the structure of a stator. It is an exploded view which shows an example of the structure of a stator unit. It is an exploded view which shows another example of the structure of a stator unit. It is a perspective view which shows an example of the structure of two stator units of the same phase adjacent to each other. It is a figure which shows an example of the configuration of two windings when two windings corresponding to two stator units of the same phase adjacent to each other are connected in series. It is a figure which shows another example of the configuration of two windings when two windings corresponding to two stator units of the same phase adjacent to each other are connected in series.
  • FIG. 1 is a perspective view showing an outline of an example of a claw pole motor (hereinafter, simply “motor”) 1 according to the present embodiment.
  • FIG. 2 is a perspective view showing an example of the configuration of the stator 20 according to the present embodiment. Specifically, FIG. 2 is a diagram in which the rotor 10 (rotor iron core 11, permanent magnet 12, and rotating shaft member 13) is not shown in FIG. 3A and 3B are exploded views showing an example and another example of the configuration of the stator unit 21, respectively.
  • the motor also referred to as an "electric motor" 1 (an example of a rotary electric machine) is an outer rotor type and is driven by a multi-phase (three-phase in this example) armature current.
  • the motor 1 is mounted on, for example, a compressor or a fan of an air conditioner.
  • the motor 1 includes a rotor 10, a stator 20, and a fixing member 30.
  • the rotor 10 is arranged outside the radial direction (hereinafter, simply “diameter direction”) of the motor 1 with respect to the stator 20, and the rotation axis AX. It is configured to be rotatable around.
  • the rotor 10 includes a rotor core 11, a plurality of (20 in this example) permanent magnets 12, and a rotating shaft member 13.
  • the rotor core (also referred to as “rotor core”) 11 has, for example, a substantially cylindrical shape, and is arranged so that the rotation axis AX of the motor 1 and the cylindrical axis substantially coincide with each other. Further, the rotor core 11 has substantially the same length as the stator 20 in the axial direction of the motor 1 (hereinafter, simply “axial direction”).
  • the rotor core 11 is formed of, for example, a steel plate, cast iron, or a dust core.
  • the rotor core 11 is composed of one member in the axial direction. Further, the rotor core 11 may be composed of a plurality of members (for example, six corresponding to the number of stator units 21 described later) stacked in the axial direction.
  • a plurality of (20 in this example) permanent magnets 12 are arranged at equal intervals in the circumferential direction on the inner peripheral surface of the rotor core 11. Further, each of the plurality of permanent magnets 12 is formed so as to exist between substantially one end and substantially the other end of the rotor core 11 in the axial direction.
  • the permanent magnet 12 is, for example, a neodymium sintered magnet or a ferrite magnet.
  • Each of the plurality of permanent magnets 12 has different magnetic poles magnetized at both ends in the radial direction. Further, the two permanent magnets 12 adjacent to each other in the circumferential direction among the plurality of permanent magnets 12 have different magnetic poles magnetized inside in the radial direction facing the stator 20. Therefore, on the outer side of the stator 20 in the radial direction, there are a permanent magnet 12 in which the N pole is magnetized inside in the radial direction and a permanent magnet 12 in which the S pole is magnetized inside in the radial direction. Are arranged alternately.
  • Each of the plurality of permanent magnets 12 may be composed of one magnet member in the axial direction, or corresponds to the number of members of a plurality of members (for example, the rotor core 11 to be laminated) divided in the axial direction. It may be composed of 6) magnet members. In this case, the same magnetic poles are all magnetized inside the plurality of magnet members constituting the permanent magnet 12 divided in the axial direction in the radial direction facing the stator 20.
  • the plurality of permanent magnets 12 arranged in the circumferential direction are composed of one member in the circumferential direction, for example, an annular ring magnet or a plastic magnet in which different magnetic poles are alternately magnetized in the circumferential direction. It may be replaced with a permanent magnet.
  • the permanent magnet composed of one member in the circumferential direction may be composed of one member in the axial direction as well, and may be composed of one member as a whole.
  • the permanent magnet composed of one member in the circumferential direction may be divided into a plurality of members in the axial direction as in the case of the plurality of permanent magnets 12. Further, when a plastic magnet composed of one member is adopted in the circumferential direction, the rotor core 11 may be omitted.
  • the rotating shaft member 13 has, for example, a substantially cylindrical shape, and is arranged so that the rotating shaft center AX of the motor 1 and the cylindrical center of the motor 1 substantially coincide with each other.
  • the rotary shaft member 13 is rotatably supported by, for example, bearings provided at both ends of the insertion member 24 in the axial direction. As will be described later, the insertion member 24 is fixed to the fixing member 30. As a result, the rotating shaft member 13 can rotate about the rotation axis AX with respect to the fixing member 30.
  • the rotary shaft member 13 is connected to the rotor core 11 at, for example, an end portion of the motor 1 opposite to the end portion of the motor 1 on the fixing member 30 side (hereinafter, “tip portion of the motor 1” for convenience) in the axial direction.
  • the connecting member may have, for example, a substantially disk shape that closes the open end of the substantially cylindrical shape of the rotor core 11.
  • stator 20 is arranged inside the rotor 10 (rotor core 11 and permanent magnet 12) in the radial direction.
  • the stator 20 includes a plurality of (six in this example) claw pole type stator units (hereinafter, simply “stator units”) 21, a plurality of (two in this example) interphase members 22, and an end.
  • the member 23 and the insertion member 24 are included.
  • the stator unit 21 includes a pair of stator cores 211 and windings 212.
  • stator cores also referred to as "stator cores" 211 (an example of iron cores) are provided so as to surround the winding 212.
  • the stator core 211 is formed of, for example, a dust core.
  • the stator core 211 includes a yoke portion 211A, a plurality of claw magnetic poles 211B, a yoke portion 211C, and an insertion hole 211D.
  • the yoke portion 211A has an annular shape in the axial direction and has a predetermined thickness in the axial direction.
  • the plurality of claw magnetic poles 211B are arranged at equal intervals in the circumferential direction on the outer peripheral surface of the yoke portion 211A, and each protrudes outward in the radial direction from the outer peripheral surface of the yoke portion 211A.
  • the claw magnetic pole 211B includes the claw magnetic pole portion 211B1.
  • the claw magnetic pole portion 211B1 (an example of the first claw magnetic pole portion) has a predetermined width and protrudes from the outer peripheral surface of the yoke portion 211A by a predetermined length.
  • the claw magnetic pole 211B further includes the claw magnetic pole portion 211B2.
  • the claw magnetic pole portion 211B2 As a result, it is possible to secure a relatively wide facing area between the magnetic pole surface of the claw magnetic pole 211B magnetized by the armature current of the winding 212 and the rotor 10. Therefore, the torque of the motor 1 can be relatively increased and the output of the motor 1 can be improved.
  • the claw magnetic pole portion 211B2 projects from the tip of the claw magnetic pole portion 211B1 toward the other of the pair of stator cores 211 in an axial direction by a predetermined length.
  • the claw magnetic pole portion 211B2 may have a tapered shape in which the width becomes narrower as the distance from the claw magnetic pole portion 211B1 in the axial direction increases.
  • the width of the claw magnetic pole portion 211B2 may be constant regardless of the distance from the claw magnetic pole portion 211B1.
  • the position of the tip of the claw magnetic pole portion 211B2 formed on one of the stator cores 211 of the pair of stator cores 211 is in the axial direction of the other stator core 211. It substantially coincides with the position of the end face (end face of the yoke portion 211A).
  • the motor 1 maximizes the magnetic pole surface of the claw magnetic pole portion 211B2 while preventing the claw magnetic pole portion 211B2 formed on one stator core 211 from protruding from the axial end surface of the other stator core 211. It can be secured as widely as possible. Therefore, the torque of the motor 1 can be further increased, and the output of the motor 1 can be further improved.
  • the claw magnetic pole portion 211B2 may be omitted.
  • the yoke portion 211C is configured such that a portion of the yoke portion 211A near the inner peripheral surface projects by a predetermined amount toward the other of the pair of stator cores 211.
  • the outer diameter of the yoke portion 211C is larger than that of the yoke portion 211A in the axial direction. It has a small ring shape.
  • the pair of stator cores 211 come into contact with each other at the yoke portions 211C, and the winding 212 is formed between the pair of yoke portions 211A and the claw magnetic poles 211B (claw magnetic pole portions 211B1) corresponding to the pair of stator cores 211.
  • a space is created to accommodate the.
  • the insertion member 24 is inserted into the insertion hole 211D.
  • the insertion hole 211D is realized by the inner peripheral surfaces of the yoke portion 211A and the yoke portion 211C.
  • the winding (also referred to as "coil") 212 is wound in an annular shape in the axial direction.
  • windings 212 of a plurality of phases three phases in this example
  • Y connection star connection
  • one end of the winding 212 is electrically connected to the external terminal of the motor 1.
  • the other end is electrically connected to the neutral point.
  • ⁇ connection delta connection
  • one end of the winding 212 is electrically connected to one external terminal of the motor 1 (external terminal of the same phase). It is connected, and the other end is electrically connected to another external terminal (external terminal of a different phase) of the motor 1.
  • the external terminals of the motor 1 are electrically connected to a power source and a drive device (for example, an inverter or the like) that drives the motor 1 with electric power supplied from the power source.
  • the winding 212 is arranged between the pair of stator cores 211 (yoke portion 211A) in the axial direction. Further, the winding 212 is wound so that the inner peripheral portion is outward in the radial direction from the yoke portion 211C of the pair of stator cores 211.
  • the pair of stator cores 211 are combined so that the claw poles 211B of one stator core 211 and the claw poles 211B of the other stator core 211 are alternately arranged in the circumferential direction. ..
  • an armature current flows through the annular winding 212
  • the claw poles 211B of one of the stator cores 211 and the claw poles 211B of the other stator core 211 are magnetized. And have different magnetic poles from each other.
  • one claw magnetic pole 211B protruding from one stator core 211 is adjacent in the circumferential direction and is different from the other claw magnetic poles 211B protruding from the other stator core 211.
  • the N-pole claw poles 211B and the S-pole claw poles 211B are alternately arranged in the circumferential direction of the pair of stator cores 211.
  • the plurality of stator units 21 are laminated in the axial direction.
  • the plurality of stator units 21 include a plurality of sets (two sets in this example) of stator units 21 for a plurality of phases (three phases in this example).
  • the plurality of stator units 21 include the stator units 21A and 21B corresponding to the U phase, the stator units 21C and 21D corresponding to the V phase, and the stator units 21E and 21F corresponding to the W phase. And include.
  • the motor 1 includes a plurality of stator units 21 having the same phase. Therefore, the output of the motor 1 can be improved as compared with the case where the number of stator units 21 having the same phase is singular.
  • the number of phases of the motor 1 may be two phases or four or more phases. Further, three or more stator units 21 for a plurality of phases may be combined.
  • the two stator units 21 in the same phase are arranged so that their positions in the circumferential direction coincide with each other in terms of electrical angle. Further, the two stator units 21 having different phases are arranged so that their positions in the circumferential direction differ by 120 ° in terms of electrical angle.
  • stator units 21 having the same phase are laminated so as to be adjacent to each other in the axial direction.
  • the U-phase stator units 21A and 21B are arranged so as to be adjacent to each other
  • the V-phase stator units 21C and 21D are arranged so as to be adjacent to each other in order from the tip end side of the motor 1.
  • the stator units 21E and 21F are arranged so as to be adjacent to each other.
  • the two stator units 21A and 21B of the U phase, the two stator units 21C and 21D of the V phase, and the two stator units of some of the two stator units 21E and 21F of the W phase are used. Only the units 21 may be arranged so as to be adjacent to each other in the axial direction. In this case, since the portion where the two stator units 21 of different phases are adjacent to each other increases, the interphase member 22 described later may be added.
  • the interphase member 22 is provided between the stator units 21 of different phases adjacent in the axial direction. As a result, a predetermined distance can be secured between the two stator units 21 of different phases, and magnetic flux leakage between the two stator units 21 of different phases can be suppressed.
  • the interphase member 22 is, for example, a non-magnetic material. As a result, magnetic flux leakage between two stator units 21 in different phases can be further suppressed.
  • the interphase member 22 includes a UV interphase member 22A and a VW interphase member 22B.
  • the UV interphase member 22A is provided between the U-phase stator unit 21B and the V-phase stator unit 21C, which are adjacent in the axial direction.
  • the UV interphase member 22A has, for example, a substantially cylindrical shape (substantially disk shape) having a predetermined thickness, and an insertion hole through which the insertion member 24 is inserted is formed in the central portion.
  • a substantially cylindrical shape substantially disk shape having a predetermined thickness
  • an insertion hole through which the insertion member 24 is inserted is formed in the central portion.
  • the same may apply to the VW interphase member 22B.
  • the VW interphase member 22B is provided between the V-phase stator unit 21D and the W-phase stator unit 21E, which are adjacent in the axial direction.
  • the end member 23 is provided at the end on the tip end side of the motor 1 of the plurality of stator units 21 to be laminated. Specifically, the end member 23 is provided so as to be in contact with the end surface of the stator unit 21A on the side opposite to the side facing the stator unit 21B in the axial direction.
  • the end member 23 has, for example, a substantially cylindrical shape (substantially disk shape) having a predetermined thickness, and an insertion hole through which the insertion member 24 is inserted is formed in the central portion.
  • the end member 23 is, for example, a non-magnetic material. As a result, magnetic flux leakage from the stator unit 21A (specifically, the stator core 211 on the tip end side of the motor 1) can be suppressed.
  • the insertion member 24 includes end members 23, stator units 23A and 23B, UV interphase members 22A, stator units 23C and 23D, VW interphase members 22B, and stator units 23E and 23F in this order from the tip end side of the motor 1.
  • the tip portion is fixed to the fixing member 30.
  • the insertion member 24 has, for example, a male screw portion at the tip portion, and is fixed to the fixing member 30 by being fastened to the corresponding female screw portion of the fixing member 30.
  • the insertion member 24 has, for example, a substantially cylindrical shape, and the rotary shaft member 13 is rotatably arranged in a hole formed by the inner peripheral surface.
  • the insertion member 24 has a head having an outer diameter relatively larger than the inner diameter of the insertion hole 211D of the stator unit 21 on the tip end side of the motor 1.
  • a force in the axial direction toward the fixing member 30 can be applied to the end member 23 from the head. Therefore, a plurality of stator units 21 (stator units 21A to 21F) and interphase members 22 (UV interphase members 22A, VW interphase members 22B) are fixed to the fixing member 30 by being sandwiched between the end member 23 and the fixing member 30. be able to.
  • the fixing member 30 has, for example, a substantially disk shape having an outer diameter larger than that of the rotor 10 (rotor core 11) in the axial direction, and has a predetermined thickness in the axial direction. As described above, the rotor 10 is rotatably supported by the fixing member 30 via the insertion member 24, and the stator 20 is fixed.
  • FIG. 4 is a perspective view showing the configuration of two stator units 21 having the same phase. Specifically, FIG. 4 is a perspective view showing the configuration of two U-phase stator units 21A and 21B.
  • 5A and 5B are diagrams showing an example and another example of the configuration of the two windings 212 when the two windings 212 corresponding to the two stator units 21 of the same phase are connected in series, respectively. is there.
  • 6A and 6B are diagrams showing an example and another example of the configuration of the two windings 212 when the two windings 212 corresponding to the two stator units 21 of the same phase are connected in parallel, respectively. is there.
  • the letter “N” or “S” attached to the claw magnetic pole 211B in FIG. 4 represents a magnetic pole at a certain timing in which an armature current is flowing in each winding 212 of the stator units 21A and 21B.
  • the magnetic pole of the claw pole 211B changes according to the direction of the armature current.
  • the windings 212 corresponding to the stator units 21A and 21B are represented by windings 212A and 212B, respectively.
  • stator cores 211 (yoke portion 211A) facing each other in the axial direction are in contact with each other.
  • the stator units 21A and 21B are arranged so that the claw magnetic poles 211B of the stator units 21A and 21B have a substantially mirror image relationship with each other.
  • the relationship of the substantially mirror image includes, for example, a case where there is a slight deviation in the circumferential direction between the stator units 21A and 21B so as to be within the assembly tolerance in the manufacturing (assembly) of the motor 1.
  • the stator units 21A and 21B are arranged so that the claw magnetic poles 211B of each other have a substantially symmetrical relationship with respect to the contact surface thereof.
  • the stator units 21A and 21B have the windings 212 of each other at the circuit end on the power supply side of the motor 1, that is, the motor 1. It is wound in the opposite direction when viewed from the external terminal. Similarly, the stator units 21A and 21B are wound in the opposite direction when viewed from the circuit end on the neutral point side. Further, when the multi-phase windings 212 of the motor 1 are connected to each other by a ⁇ connection, the stator units 21A and 21B have the windings 212 of each other at the circuit end of the motor 1, that is, both ends of the winding 212.
  • the windings 212 of each other are wound in the opposite direction when viewed from the circuit end on the power supply side and the neutral point side of the motor 1" means that an alternating current of the same phase (U phase in this example) flows. This means that currents in opposite directions flow through the two annular windings 212.
  • the windings 212 of each other are wound in opposite directions when viewed from the circuit end of the motor 1 (that is, one and the other of the two external terminals)" is the same phase (in this example, U). This means that currents in opposite directions flow through the two annular windings 212 through which the alternating current of the phase) flows.
  • the claw magnetic poles 211B of the two stator cores 211 facing (contacting) the stator units 21A and 21B have two windings of the stator units 21A and 21B. It is magnetized by the armature current flowing through 212 and has the same magnetic poles as each other. Therefore, the magnetic flux directions in the claw magnetic poles 211B (claw magnetic pole portions 211B1) formed on the two stator cores 211 facing (contacting) the stator units 21A and 21B are substantially the same.
  • the multi-phase stator units 21 in an arrangement in which different phases are adjacent to each other in the axial direction are simply stacked in the axial direction, All stator units 21 are adjacent to stator units 21 in different phases. Then, for all the combinations of the two stator units 21 adjacent to each other, in order to suppress the magnetic flux leakage between the stator cores 211 of each other, a space is provided between the two stator units 21 adjacent to each other. It may be necessary to provide the above-mentioned interphase member 22 at intervals.
  • the magnetic fluxes of the claw magnetic poles 211B formed on the two facing stator cores 211 due to the armature current are different from each other.
  • the magnetic flux directions of the claw magnetic poles 211B which are in a substantially mirror image relationship, are different from each other.
  • the arrangement of the claw magnetic flux 211B of two stator units 21 of the same phase adjacent to each other is not in a substantially mirror image relationship (specifically, the two stator units 21 are overlapped in the same direction).
  • the magnetic flux directions of the claw magnetic poles 211B of the two stator cores 211 facing each other are different.
  • a gap is provided between two stator units 21 of the same phase adjacent to each other in the same manner as described above, or the gap is described above. It may be necessary to provide a member similar to the interphase member 22 of the above.
  • the axial dimension of the motor may increase.
  • the magnetic flux directions of the claw magnetic poles 211B formed on the two facing (contacting) stator cores 211 of the stator units 21A and 21B are substantially the same. Can be. Therefore, even when the distance between the stator units 21A and 21B is relatively small or when a member for suppressing magnetic flux leakage is not provided at the distance, between the two stator cores 211 facing each other. It is possible to suppress the magnetic flux leakage in. Therefore, the axial dimension can be relatively reduced and the motor 1 can be miniaturized.
  • the position of the tip of the claw magnetic pole portion 211B2 formed on one of the stator cores 211 of the pair of stator cores 211 is in the axial direction and in the axial direction of the other stator core 211. It substantially coincides with the position of the end face (the end face of the yoke portion 211A). Therefore, as shown in FIG. 4, the claw magnetic pole portion 211B2 (claw magnetic pole portion of the S pole in the drawing) formed on the two stator cores 211 located at both ends of the two stator units 21 of the same phase adjacent to each other. The tips of 211B2) come into contact with each other. Therefore, the magnetic pole surface of the claw magnetic pole portion 211B2 can be secured as wide as possible, and the torque of the motor 1 can be increased.
  • the two windings 212 through which alternating current of the same phase flows may be connected in series or in parallel.
  • an alternating current of the same phase flows, and one end of the connection body of the two windings 212 connected in series or in parallel is an external terminal on the electric circuit. And the other end is connected to the neutral point. Therefore, the two windings 212 corresponding to the two stator units 21A and 21B of the same phase are wound in opposite directions when viewed from the circuit ends on the power supply (external terminal) side and the neutral point side of the motor 1. By being pulled, currents that rotate in opposite directions flow.
  • the windings 212A and 212B corresponding to the stator units 21A and 21B have end portions located at the inner peripheral portion in the radial direction (hereinafter, “inner peripheral end portion” for convenience). ) It is wound counterclockwise (counterclockwise) in the figure from 212A1,212B1.
  • the connection portion 213 is the end portion located on the radial outer peripheral portion of the winding 212A (hereinafter, “outer peripheral end portion” for convenience) 212A2 and the outer peripheral end portion 212B2 located on the radial outer peripheral portion of the winding 212B. Connected by.
  • the windings 212A and 212B are electrically connected in series.
  • One of the inner peripheral ends 212A1,212B1 is connected to the external terminal, and the other is connected to the neutral point.
  • the winding 212A is wound counterclockwise (counterclockwise) in the drawing when viewed from the inner peripheral end portion 212A1 corresponding to the circuit end on the power supply side or the neutral point side of the motor 1. ..
  • the winding 212B is wound clockwise (clockwise) in the drawing because the winding start (starting end) is the outer peripheral end portion 212B2.
  • the winding 212B is wound counterclockwise (counterclockwise) in the drawing when viewed from the inner peripheral end portion 212B1 corresponding to the circuit end portion on the neutral point side or the power supply side of the motor 1.
  • the winding 212A when viewed from the inner peripheral end portion 212B1, the winding 212A is wound clockwise (clockwise) in the drawing because the winding start (starting end) is the outer peripheral end portion 212A2. Therefore, a reverse current flows through the two windings 212A and 212B.
  • the outer peripheral end portions 212A2 and 212B2 located at the outer peripheral portions of the two windings 212A and 212B in the radial direction are connected by the connecting portion 213. Therefore, the distance between the connecting portions 213 is relatively short, and the connecting portions 213 do not straddle between the inner peripheral portions and the outer peripheral portions of the two windings 212A and 212B. Therefore, the designer can relatively easily design the connection portion 213 in the space between the other parts.
  • the connecting portion 213 is replaced with the inner peripheral end portions 212A1,212B1 located at the inner peripheral portions of the two windings 212A and 212B in the radial direction instead of the outer peripheral end portions 212A2 and 212B2. You may connect between them.
  • the two windings 212 that are physically wound in the same direction are connected in series between the outer peripheral ends or the inner peripheral ends.
  • the winding 212A corresponding to the stator unit 21A is wound counterclockwise (counterclockwise) in the drawing from the inner peripheral end portion 212A1.
  • the winding 212B corresponding to the stator unit 21B is wound clockwise (clockwise) from the inner peripheral end portion 212B1 in the drawing.
  • the outer peripheral end portion 212A2 of the winding 212A and the inner peripheral end portion 212B1 of the winding 212B are connected by a connecting portion 213.
  • the windings 212A and 212B are electrically connected in series.
  • One of the inner peripheral end portion 212A1 and the outer peripheral end portion 212B2 is connected to the external terminal, and the other is connected to the neutral point.
  • the winding 212A is counterclockwise (counterclockwise) in the drawing when viewed from the inner peripheral end 212A1 corresponding to the circuit end on the power supply (external terminal) side or the neutral point side of the motor 1. It is rolled up.
  • the winding 212B is wound clockwise (clockwise) in the drawing because the winding start (starting end) is the inner peripheral end portion 212B1.
  • the winding 212B is wound counterclockwise (counterclockwise) in the drawing when viewed from the outer peripheral end portion 212B2 corresponding to the circuit end portion on the neutral point side or the power supply side of the motor 1.
  • the connecting portion 213 may connect between the inner peripheral end portion 212A1 and the outer peripheral end portion 212B2 instead of between the outer peripheral end portion 212A2 and the inner peripheral end portion 212B1.
  • the windings 212A and 212B corresponding to the stator units 21A and 21B are wound clockwise (clockwise) from the inner peripheral end portions 212A1,212B1 in the drawing, respectively.
  • the outer peripheral end portion 212A2 of the winding 212A and the inner peripheral end portion 212B1 of the winding 212B are connected by a connecting portion 214, and the connecting portion 214 is connected to an external terminal.
  • the inner peripheral end portion 212A1 of the winding 212A and the outer peripheral end portion 212B2 of the winding 212B are connected to the neutral point.
  • the two windings 212A and 212B are electrically connected in parallel.
  • the winding 212A is counterclockwise (counterclockwise) in the drawing when viewed from the outer peripheral end 212A2 (inner peripheral end 212B1) corresponding to the circuit end on the power supply (external terminal) side of the motor 1. It is wrapped in.
  • the winding 212B is wound clockwise (clockwise) in the drawing. ing.
  • the winding 212A is wound clockwise (clockwise) in the drawing when viewed from the inner peripheral end portion 212A1 (outer peripheral end portion 212B2) corresponding to the circuit end on the neutral point side of the motor 1. ..
  • the winding 212B is wound counterclockwise (counterclockwise) when viewed from the outer peripheral end portion 212B2 (inner peripheral end portion 212A1) corresponding to the circuit end on the neutral point side of the motor 1. Therefore, a reverse current flows through the two windings 212A and 212B.
  • the outer peripheral end 212A2 of the winding 212A and the inner peripheral end 212B1 of the winding 212B are connected to the neutral point, and the inner peripheral end 212A1 of the winding 212A and the outer peripheral end 212B2 of the winding 212B are connected. May be connected to the external terminal via the connection portion 214.
  • the winding 212A corresponding to the stator unit 21A is wound counterclockwise (counterclockwise) in the drawing from the inner peripheral end portion 212A1.
  • the winding 212B corresponding to the stator unit 21B is wound clockwise (clockwise) from the inner peripheral end portion 212B1 in the drawing.
  • the outer peripheral end portion 212A2 of the winding 212A and the outer peripheral end portion 212B2 of the winding 212B are connected by a connecting portion 214, and the connecting portion 214 is connected to an external terminal.
  • the inner peripheral end portions 212A1,212B1 are connected to the neutral point.
  • the two windings 212A and 212B are electrically connected in parallel.
  • the winding 212A is wound clockwise (clockwise) in the drawing when viewed from the outer peripheral end portion 212A2 (outer peripheral end portion 212B2) corresponding to the circuit end on the power supply (external terminal) side of the motor 1. It has been done.
  • the winding 212B is wound counterclockwise (counterclockwise) in the drawing. ing.
  • the inner peripheral end portions 212A1,212B1 may be connected to the external terminal via the connecting portion 214, and the outer peripheral end portions 212A2,212B2 may be connected to the neutral point.
  • the two windings 212 physically wound in opposite directions are connected in parallel between the outer peripheral ends and the inner peripheral ends.
  • the two stator units 21 having the same phase adjacent to each other in the axial direction are arranged so that the claw magnetic poles 211B are substantially mirror images of each other. Then, in the two stator units 21 having the same phase adjacent to each other in the axial direction, the windings 212 of each other are wound in opposite directions when viewed from a predetermined external terminal of the motor 1.
  • the two stator units 21 having the same phase adjacent to each other in the axial direction have a substantially mirror image relationship with the axial end portion (yoke portion 211A) of the stator cores 211 facing each other.
  • the polarities of the magnetic poles of the arranged claw magnetic poles 211B due to the armature current are the same.
  • the motor 1 has the magnetic flux of the claw magnetic pole 211B formed on the two stator cores 211 facing each other even if the axial distance between the two stator units 21 of the same phase is relatively short.
  • the directions can be aligned substantially the same, and magnetic flux leakage can be suppressed. Therefore, the motor 1 can be miniaturized.
  • the two stator units 21 having the same phase adjacent to each other in the axial direction have different phases in which the axial distances between the stator cores 211 facing each other are different in the axial direction. It may be smaller than the axial distance between the two stator units 21 facing the stator cores 211.
  • the distance between them is made relatively shorter than the distance between two stator units 21 in different phases.
  • the axial dimension of the motor 1 can be reduced.
  • three or more stator units 21 for a plurality of phases may be combined.
  • at least two of the three or more stator units 21 having the same phase may be arranged so as to be adjacent to each other in the axial direction.
  • at least one of the combinations may have the above relationship.
  • the axial distance between the stator cores 211 facing each other may be 0 between the two stator units 21 having the same phase adjacent to each other in the axial direction.
  • the motor 1 can be further miniaturized.
  • the axial distance of the stator cores 211 of the two stator units 21 of the same phase facing each other is the facing stators of the two stator units 21 of different phases adjacent in the axial direction. It may be larger than 0 in a range smaller than the axial distance between the iron cores 211. As a result, the motor 1 can suppress the cogging torque. Further, a member similar to the interphase member 22 may be provided between the two stator cores 211 facing each other of the two stator units 21 having the same phase. As a result, the motor 1 can further suppress the cogging torque.
  • the claw magnetic pole 211B has a claw magnetic pole portion 211B1 protruding in the radial direction from one end portion (yoke portion 211A) in the axial direction of the stator core 211 toward the rotor 10.
  • the claw magnetic pole 211B 2 is a claw magnetic pole portion 211B2 that projects axially from the tip end portion of the claw magnetic pole portion 211B1 toward the other end portion in the axial direction of the stator core 211 (the yoke portion 211A of the other stator core 211).
  • the two stator units 21 of the same phase adjacent to each other in the axial direction are in contact with each other at the tips of the claw magnetic pole portions 211B2 formed on the two stator cores 211 located at both ends in the axial direction of each other. Good.
  • the motor 1 can secure a relatively wide magnetic pole surface of the claw magnetic pole 211B (claw magnetic pole portion 211B2). Therefore, the motor 1 can relatively increase the torque and improve its output.
  • the two stator units 21 having the same phase adjacent to each other in the axial direction are wound so that both ends of the respective windings 212 are located at the inner peripheral portion and the outer peripheral portion. Then, the two stator units 21 of the same phase adjacent to each other in the axial direction are connected to each other at one end (inner peripheral end) of the inner peripheral portion of each winding 212, or the other end of the outer peripheral portion of each winding 212 ( Outer peripheral ends) may be connected to each other.
  • the motor 1 relatively shortens the lengths of the connecting portions 213 and 214 connecting the two windings 212 of the same phase, and the connecting portions 213 and 214 are among the two windings 212A and 212B. It is possible not to straddle between the peripheral portion and the outer peripheral portion. Therefore, for example, the designer can relatively easily design the connecting portions 213 and 214 that connect the two windings 212 of the same phase corresponding to the two stator units 21 of the same phase.
  • the configuration of the above-described embodiment may be applied to an inner rotor type claw pole motor in which the rotor is rotatably arranged inside the claw pole type stator in the radial direction.
  • a claw magnetic pole is formed that protrudes inward in the radial direction from the inner peripheral side of the stator core.
  • a claw pole generator an example of a rotary electric machine
  • an alternator or both the function of the motor (electric motor) and the function of the generator.
  • a claw pole type motor generator an example of a rotary electric machine having a claw pole.

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Abstract

Provided is a technique which enables a decrease in the size of a multiple-phase, claw pole-type rotary electric machine. A claw pole motor 1 according to an embodiment of the present disclosure is provided with a stator 20 in which six claw pole-type stator units 21 are stacked in an axial direction. Two stator units 21 included in the six stator units 21 that are adjacent to each other in the same axial direction and having the same phase have respective claw magnetic poles 211B disposed in a substantially mirror image relationship, with respective windings 212 wound in opposite directions when viewed from circuit ends on a power supply side and a neutral point side. In addition, the two stator units 21 included in the six stator units 21 that are adjacent to each other in the axial direction and having the same phase have a same magnetic pole polarity due to an armature current through the claw magnetic poles 211B disposed at the ends in the axial direction of the stator cores 211 facing each other in a substantially mirror image relationship.

Description

回転電機Rotating machine
　本開示は、回転電機に関する。 This disclosure relates to rotary electric machines.
　例えば、複数相のクローポール型モータにおいて、隣接する異なる二つの相の固定子の間に非磁性体の連結板を設ける技術が知られている（特許文献１参照）。 For example, in a multi-phase claw pole type motor, a technique of providing a non-magnetic connecting plate between stators of two adjacent different phases is known (see Patent Document 1).
特許第４８８７１２８号公報Japanese Patent No. 4887128
　しかしながら、連結板を設ける分だけクローポール型モータの軸方向のサイズが増加してしまう。 However, the axial size of the claw pole type motor increases by the amount of the connecting plate provided.
　本開示は、複数相のクローポール型の回転電機を小型化することが可能な技術を提供することを目的とする。 An object of the present disclosure is to provide a technology capable of miniaturizing a multi-phase claw pole type rotary electric machine.
　本開示に係る一実施形態では、
　クローポール型の複数の固定子ユニットが軸方向に積層される固定子を備える、複数相の回転電機であって、
　前記固定子ユニットは、環状に巻回される巻線と、前記巻線の周囲を包囲するように設けられる鉄心と、前記鉄心の軸方向の両端部のそれぞれに周方向で交互に並ぶように複数形成され、前記鉄心の軸方向の両端部のそれぞれから回転子に向かって径方向に突出する爪磁極とを有し、
　前記複数の固定子ユニットに含まれる、軸方向に隣接する同じ相の二つの固定子ユニットの組み合わせのうちの少なくとも一組は、互いの前記爪磁極が略鏡像の関係で配置され、且つ、互いの前記巻線が所定の外部端子から見て逆向きに巻かれている、
　回転電機が提供される。 In one embodiment of the disclosure,
A multi-phase rotary electric machine having a stator in which a plurality of claw pole type stator units are stacked in the axial direction.
The stator unit is arranged alternately in the circumferential direction with a winding wound in an annular shape, an iron core provided so as to surround the winding, and both ends of the iron core in the axial direction. It has a plurality of claw magnetic poles that are formed and protrude in the radial direction from each of both ends in the axial direction of the iron core toward the rotor.
At least one set of the combination of two stator units having the same phase adjacent to each other in the plurality of stator units is such that the claw magnetic poles of each other are arranged in a substantially mirror image relationship and each other. The winding is wound in the opposite direction when viewed from a predetermined external terminal.
A rotary electric machine is provided.
　本実施形態によれば、モータは、同じ相の二つの固定子ユニットの間の軸方向の距離が相対的に短くても、面している二つの固定子鉄心に形成される爪磁極の磁束方向を略同じに揃え、磁束漏れを抑制することができる。そのため、モータを小型化することができる。 According to this embodiment, the motor has a magnetic flux of a claw magnetic pole formed on two stator cores facing each other even if the axial distance between two stator units of the same phase is relatively short. The directions can be aligned substantially the same, and magnetic flux leakage can be suppressed. Therefore, the motor can be miniaturized.
　また、本開示に係る他の実施形態において、
　クローポール型の複数の固定子ユニットが軸方向に積層される固定子を備える、複数相の回転電機であって、
　前記固定子ユニットは、環状に巻回される巻線と、前記巻線の周囲を包囲するように設けられる鉄心と、前記鉄心の軸方向の両端部のそれぞれに周方向で交互に並ぶように複数形成され、前記鉄心の軸方向の両端部のそれぞれから回転子に向かって径方向に突出する爪磁極とを有し、
　前記複数の固定子ユニットのうちの軸方向で隣接する同じ相の二つの固定子ユニットの組み合わせのうちの少なくとも一組は、互いの前記鉄心の面している軸方向の端部に略鏡像の関係で配置される爪磁極の電機子電流による磁極の極性が同じである、
　回転電機が提供される。 In addition, in other embodiments according to the present disclosure.
A multi-phase rotary electric machine having a stator in which a plurality of claw pole type stator units are stacked in the axial direction.
The stator unit is arranged alternately in the circumferential direction with a winding wound in an annular shape, an iron core provided so as to surround the winding, and both ends of the iron core in the axial direction. It has a plurality of claw magnetic poles that are formed and protrude in the radial direction from each of both ends in the axial direction of the iron core toward the rotor.
At least one of the combinations of two stator units of the same phase adjacent in the axial direction among the plurality of stator units is a substantially mirror image at the axial ends of the iron cores facing each other. The polarity of the magnetic poles due to the armature current of the claw magnetic poles arranged in relation is the same,
A rotary electric machine is provided.
　本実施形態によれば、モータは、同じ相の二つの固定子ユニットの間の軸方向の距離が相対的に短くても、面している二つの固定子鉄心に形成される爪磁極の磁束方向を略同じに揃え、磁束漏れを抑制することができる。そのため、モータを小型化することができる。 According to this embodiment, the motor has a magnetic flux of a claw magnetic pole formed on two stator cores facing each other even if the axial distance between two stator units of the same phase is relatively short. The directions can be aligned substantially the same, and magnetic flux leakage can be suppressed. Therefore, the motor can be miniaturized.
　また、上述の実施形態において、
　互いの前記鉄心の間の軸方向の距離が、前記複数の固定子ユニットのうちの互いに軸方向で隣接する異なる相の二つの固定子ユニットの前記鉄心の間の軸方向の距離より小さくてもよい。 Further, in the above-described embodiment,
Even if the axial distance between the cores of each other is smaller than the axial distance between the cores of two stator units of different phases that are axially adjacent to each other among the plurality of stator units. Good.
　また、上述の実施形態において、
　前記少なくとも一組は、互いの鉄心間の軸方向の距離が０であってもよい。 Further, in the above-described embodiment,
The at least one set may have an axial distance between the iron cores of each other being zero.
　また、上述の実施形態において、
　前記爪磁極は、前記鉄心の軸方向の一端部から前記回転子に向かって径方向に突出する第１の爪磁極部と、前記第１の爪磁極部の先端部から前記鉄心の軸方向の他端部に向かって軸方向に突出する第２の爪磁極部とを有し、
　前記少なくとも一組は、互いの前記第２の爪磁極部の先端部が接触していてもよい。 Further, in the above-described embodiment,
The claw magnetic poles are a first claw magnetic pole portion that protrudes radially toward the rotor from one end portion in the axial direction of the iron core, and an axial direction of the iron core from the tip end portion of the first claw magnetic pole portion. It has a second claw magnetic pole portion that projects axially toward the other end, and has a second claw magnetic pole portion.
The at least one set may be in contact with each other at the tips of the second claw magnetic poles.
　また、上述の実施形態において、
　前記複数の固定子ユニットのうちの軸方向で隣接する同じ相の二つの固定子ユニットの組み合わせのうちの少なくとも一組は、それぞれの前記巻線の両端が内周部及び外周部に位置するように巻回され、互いの前記巻線の前記内周部の一端どうし、又は互いの前記巻線の前記外周部の他端どうしが接続されていてもよい。 Further, in the above-described embodiment,
At least one set of the combination of two stator units of the same phase adjacent in the axial direction among the plurality of stator units is such that both ends of the windings are located on the inner peripheral portion and the outer peripheral portion. The two ends of the inner peripheral portions of the windings may be connected to each other, or the other ends of the outer peripheral portions of the windings may be connected to each other.
　上述の実施形態によれば、複数相のクローポール型の回転電機を小型化することが可能な技術を提供することができる。 According to the above-described embodiment, it is possible to provide a technique capable of miniaturizing a multi-phase claw pole type rotary electric machine.
モータの概要を示す斜視図である。It is a perspective view which shows the outline of a motor. 固定子の構成の一例を示す斜視図である。It is a perspective view which shows an example of the structure of a stator. 固定子ユニットの構成の一例を示す分解図である。It is an exploded view which shows an example of the structure of a stator unit. 固定子ユニットの構成の他の例を示す分解図である。It is an exploded view which shows another example of the structure of a stator unit. 隣接する同じ相の二つの固定子ユニットの構成の一例を示す斜視図である。It is a perspective view which shows an example of the structure of two stator units of the same phase adjacent to each other. 隣接する同じ相の二つの固定子ユニットに対応する二つの巻線が直列接続される場合の二つの巻線の構成の一例を示す図である。It is a figure which shows an example of the configuration of two windings when two windings corresponding to two stator units of the same phase adjacent to each other are connected in series. 隣接する同じ相の二つの固定子ユニットに対応する二つの巻線が直列接続される場合の二つの巻線の構成の他の例を示す図である。It is a figure which shows another example of the configuration of two windings when two windings corresponding to two stator units of the same phase adjacent to each other are connected in series. 隣接する同じ相の二つの固定子ユニットに対応する二つの巻線が並列接続される場合の二つの巻線の構成の一例を示す図である。It is a figure which shows an example of the structure of two windings when two windings corresponding to two stator units of the same phase adjacent to each other are connected in parallel. 隣接する同じ相の二つの固定子ユニットに対応する二つの巻線が並列接続される場合の二つの巻線の構成の他の例を示す図である。It is a figure which shows another example of the configuration of two windings when two windings corresponding to two stator units of the same phase adjacent to each other are connected in parallel.
　以下、図面を参照して実施形態について説明する。 Hereinafter, embodiments will be described with reference to the drawings.
　［モータの基本構成］
　まず、図１～図３（図３Ａ、図３Ｂ）を参照して、本実施形態に係るモータ１の基本構成について説明する。 [Basic configuration of motor]
First, the basic configuration of the motor 1 according to the present embodiment will be described with reference to FIGS. 1 to 3 (FIGS. 3A and 3B).
　図１は、本実施形態に係るクローポールモータ（以下、単に「モータ」）１の一例の概要を示す斜視図である。図２は、本実施形態に係る固定子２０の構成の一例を示す斜視図である。具体的には、図２は、図１において、回転子１０（回転子鉄心１１、永久磁石１２、及び回転軸部材１３）の図示を省略した図である。図３Ａ、図３Ｂは、それぞれ、固定子ユニット２１の構成の一例及び他の例を示す分解図である。 FIG. 1 is a perspective view showing an outline of an example of a claw pole motor (hereinafter, simply “motor”) 1 according to the present embodiment. FIG. 2 is a perspective view showing an example of the configuration of the stator 20 according to the present embodiment. Specifically, FIG. 2 is a diagram in which the rotor 10 (rotor iron core 11, permanent magnet 12, and rotating shaft member 13) is not shown in FIG. 3A and 3B are exploded views showing an example and another example of the configuration of the stator unit 21, respectively.
　図１に示すように、モータ（「電動機」とも称する）１（回転電機の一例）は、アウタロータ型であり、複数相（本例では、３相）の電機子電流で駆動される。モータ１は、例えば、空気調和機の圧縮機、ファン等に搭載される。 As shown in FIG. 1, the motor (also referred to as an "electric motor") 1 (an example of a rotary electric machine) is an outer rotor type and is driven by a multi-phase (three-phase in this example) armature current. The motor 1 is mounted on, for example, a compressor or a fan of an air conditioner.
　図１、図２に示すように、モータ１は、回転子１０と、固定子２０と、固定部材３０とを含む。 As shown in FIGS. 1 and 2, the motor 1 includes a rotor 10, a stator 20, and a fixing member 30.
　図１に示すように、回転子（「ロータ」とも称する）１０は、固定子２０に対して、モータ１の径方向（以下、単に「径方向」）の外側に配置され、回転軸心ＡＸまわりに回転可能に構成される。回転子１０は、回転子鉄心１１と、複数（本例では、２０個）の永久磁石１２と、回転軸部材１３とを含む。 As shown in FIG. 1, the rotor (also referred to as “rotor”) 10 is arranged outside the radial direction (hereinafter, simply “diameter direction”) of the motor 1 with respect to the stator 20, and the rotation axis AX. It is configured to be rotatable around. The rotor 10 includes a rotor core 11, a plurality of (20 in this example) permanent magnets 12, and a rotating shaft member 13.
　回転子鉄心（「ロータコア」とも称する）１１は、例えば、略円筒形状を有し、モータ１の回転軸心ＡＸと円筒形状の軸心とが略一致するように配置される。また、回転子鉄心１１は、モータ１の軸方向（以下、単に「軸方向」）において、固定子２０と略同等の長さを有する。回転子鉄心１１は、例えば、鋼板、鋳鉄、圧粉磁心により形成される。回転子鉄心１１は、軸方向において、一の部材で構成される。また、回転子鉄心１１は、軸方向に積層される複数（例えば、後述する固定子ユニット２１の数に対応する６つ）の部材で構成されてもよい。 The rotor core (also referred to as "rotor core") 11 has, for example, a substantially cylindrical shape, and is arranged so that the rotation axis AX of the motor 1 and the cylindrical axis substantially coincide with each other. Further, the rotor core 11 has substantially the same length as the stator 20 in the axial direction of the motor 1 (hereinafter, simply “axial direction”). The rotor core 11 is formed of, for example, a steel plate, cast iron, or a dust core. The rotor core 11 is composed of one member in the axial direction. Further, the rotor core 11 may be composed of a plurality of members (for example, six corresponding to the number of stator units 21 described later) stacked in the axial direction.
　複数（本例では、２０個）の永久磁石１２は、回転子鉄心１１の内周面において、周方向に等間隔で並べられる。また、複数の永久磁石１２は、それぞれ、回転子鉄心１１の軸方向の略一端から略他端までの間に存在するように形成されている。永久磁石１２は、例えば、ネオジム焼結磁石やフェライト磁石である。 A plurality of (20 in this example) permanent magnets 12 are arranged at equal intervals in the circumferential direction on the inner peripheral surface of the rotor core 11. Further, each of the plurality of permanent magnets 12 is formed so as to exist between substantially one end and substantially the other end of the rotor core 11 in the axial direction. The permanent magnet 12 is, for example, a neodymium sintered magnet or a ferrite magnet.
　複数の永久磁石１２は、それぞれ、径方向の両端に異なる磁極が着磁されている。また、複数の永久磁石１２のうちの周方向で隣接する二つの永久磁石１２は、固定子２０に面する径方向の内側に互いに異なる磁極が着磁されている。そのため、固定子２０の径方向の外側には、周方向で、径方向の内側にＮ極が着磁された永久磁石１２と、径方向の内側にＳ極が着磁された永久磁石１２とが交互に配置される。 Each of the plurality of permanent magnets 12 has different magnetic poles magnetized at both ends in the radial direction. Further, the two permanent magnets 12 adjacent to each other in the circumferential direction among the plurality of permanent magnets 12 have different magnetic poles magnetized inside in the radial direction facing the stator 20. Therefore, on the outer side of the stator 20 in the radial direction, there are a permanent magnet 12 in which the N pole is magnetized inside in the radial direction and a permanent magnet 12 in which the S pole is magnetized inside in the radial direction. Are arranged alternately.
　複数の永久磁石１２は、それぞれ、軸方向において、一の磁石部材で構成されていてもよいし、軸方向に分割される複数（例えば、積層される回転子鉄心１１の部材の数に対応する６つ）の磁石部材で構成されていてもよい。この場合、軸方向に分割される永久磁石１２を構成する複数の磁石部材は、固定子２０に面する径方向の内側に全て同じ磁極が着磁される。 Each of the plurality of permanent magnets 12 may be composed of one magnet member in the axial direction, or corresponds to the number of members of a plurality of members (for example, the rotor core 11 to be laminated) divided in the axial direction. It may be composed of 6) magnet members. In this case, the same magnetic poles are all magnetized inside the plurality of magnet members constituting the permanent magnet 12 divided in the axial direction in the radial direction facing the stator 20.
　尚、周方向に配置される複数の永久磁石１２は、例えば、周方向で異なる磁極が交互に着磁される円環状のリング磁石やプラスチック磁石等、周方向において、一の部材で構成される永久磁石に置換されてもよい。この場合、周方向において、一の部材で構成される永久磁石は、軸方向においても、一の部材で構成され、全体として、一の部材で構成されてもよい。また、周方向において、一の部材で構成される永久磁石は、複数の永久磁石１２の場合と同様、軸方向において、複数の部材に分割されていてもよい。また、周方向において、一の部材で構成されるプラスチック磁石が採用される場合、回転子鉄心１１は、省略されてもよい。 The plurality of permanent magnets 12 arranged in the circumferential direction are composed of one member in the circumferential direction, for example, an annular ring magnet or a plastic magnet in which different magnetic poles are alternately magnetized in the circumferential direction. It may be replaced with a permanent magnet. In this case, the permanent magnet composed of one member in the circumferential direction may be composed of one member in the axial direction as well, and may be composed of one member as a whole. Further, the permanent magnet composed of one member in the circumferential direction may be divided into a plurality of members in the axial direction as in the case of the plurality of permanent magnets 12. Further, when a plastic magnet composed of one member is adopted in the circumferential direction, the rotor core 11 may be omitted.
　回転軸部材１３は、例えば、略円柱形状を有し、モータ１の回転軸心ＡＸと円柱形状の軸心とが略一致するように配置される。回転軸部材１３は、例えば、挿通部材２４の軸方向の両端部に設けられるベアリング等によって回転可能に支持される。後述の如く、挿通部材２４は、固定部材３０に固定される。これにより、回転軸部材１３は、固定部材３０に対して回転軸心ＡＸ回りで回転することができる。回転軸部材１３は、例えば、軸方向において、モータ１の固定部材３０側の端部とは反対側の端部（以下、便宜的に「モータ１の先端部」）で回転子鉄心１１と連結される。連結部材は、例えば、回転子鉄心１１の略円筒形状の開放端を閉塞する形の略円板形状を有してよい。これにより、回転子鉄心１１及び回転子鉄心１１の内周面に固定される複数の永久磁石１２は、回転軸部材１３の回転に合わせて、固定部材３０に対してモータ１の回転軸心ＡＸまわりに回転することができる。 The rotating shaft member 13 has, for example, a substantially cylindrical shape, and is arranged so that the rotating shaft center AX of the motor 1 and the cylindrical center of the motor 1 substantially coincide with each other. The rotary shaft member 13 is rotatably supported by, for example, bearings provided at both ends of the insertion member 24 in the axial direction. As will be described later, the insertion member 24 is fixed to the fixing member 30. As a result, the rotating shaft member 13 can rotate about the rotation axis AX with respect to the fixing member 30. The rotary shaft member 13 is connected to the rotor core 11 at, for example, an end portion of the motor 1 opposite to the end portion of the motor 1 on the fixing member 30 side (hereinafter, “tip portion of the motor 1” for convenience) in the axial direction. Will be done. The connecting member may have, for example, a substantially disk shape that closes the open end of the substantially cylindrical shape of the rotor core 11. As a result, the rotor core 11 and the plurality of permanent magnets 12 fixed to the inner peripheral surfaces of the rotor core 11 rotate the rotation axis AX of the motor 1 with respect to the fixing member 30 in accordance with the rotation of the rotation shaft member 13. Can rotate around.
　図２に示すように、固定子（「ステータ」とも称する）２０は、回転子１０（回転子鉄心１１及び永久磁石１２）の径方向の内側に配置される。固定子２０は、複数（本例では、６つ）のクローポール型固定子ユニット（以下、単に「固定子ユニット」）２１と、複数（本例では、２つ）の相間部材２２と、端部部材２３と、挿通部材２４とを含む。 As shown in FIG. 2, the stator (also referred to as “stator”) 20 is arranged inside the rotor 10 (rotor core 11 and permanent magnet 12) in the radial direction. The stator 20 includes a plurality of (six in this example) claw pole type stator units (hereinafter, simply “stator units”) 21, a plurality of (two in this example) interphase members 22, and an end. The member 23 and the insertion member 24 are included.
　図３Ａ、図３Ｂに示すように、固定子ユニット２１は、一対の固定子鉄心２１１と、巻線２１２とを含む。 As shown in FIGS. 3A and 3B, the stator unit 21 includes a pair of stator cores 211 and windings 212.
　一対の固定子鉄心（「ステータコア」とも称する）２１１（鉄心の一例）は、巻線２１２の周囲を取り囲むように設けられる。固定子鉄心２１１は、例えば、圧粉磁心で形成される。固定子鉄心２１１は、ヨーク部２１１Ａと、複数の爪磁極２１１Ｂと、ヨーク部２１１Ｃと、挿通孔２１１Ｄとを含む。 A pair of stator cores (also referred to as "stator cores") 211 (an example of iron cores) are provided so as to surround the winding 212. The stator core 211 is formed of, for example, a dust core. The stator core 211 includes a yoke portion 211A, a plurality of claw magnetic poles 211B, a yoke portion 211C, and an insertion hole 211D.
　ヨーク部２１１Ａは、軸方向視で円環形状を有すると共に、軸方向に所定の厚みを有する。 The yoke portion 211A has an annular shape in the axial direction and has a predetermined thickness in the axial direction.
　複数の爪磁極２１１Ｂは、ヨーク部２１１Ａの外周面において、周方向に等間隔で配置され、それぞれは、ヨーク部２１１Ａの外周面から径方向の外側に向かって突出する。爪磁極２１１Ｂは、爪磁極部２１１Ｂ１を含む。 The plurality of claw magnetic poles 211B are arranged at equal intervals in the circumferential direction on the outer peripheral surface of the yoke portion 211A, and each protrudes outward in the radial direction from the outer peripheral surface of the yoke portion 211A. The claw magnetic pole 211B includes the claw magnetic pole portion 211B1.
　爪磁極部２１１Ｂ１（第１の爪磁極部の一例）は、所定の幅を有し、ヨーク部２１１Ａの外周面から所定の長さだけ延び出す形で突出する。 The claw magnetic pole portion 211B1 (an example of the first claw magnetic pole portion) has a predetermined width and protrudes from the outer peripheral surface of the yoke portion 211A by a predetermined length.
　また、爪磁極２１１Ｂは、更に、爪磁極部２１１Ｂ２を含む。これにより、巻線２１２の電機子電流により磁化される爪磁極２１１Ｂの磁極面と回転子１０との対向面積を相対的に広く確保することができる。そのため、モータ１のトルクを相対的に増加させ、モータ１の出力を向上させることができる。 Further, the claw magnetic pole 211B further includes the claw magnetic pole portion 211B2. As a result, it is possible to secure a relatively wide facing area between the magnetic pole surface of the claw magnetic pole 211B magnetized by the armature current of the winding 212 and the rotor 10. Therefore, the torque of the motor 1 can be relatively increased and the output of the motor 1 can be improved.
　爪磁極部２１１Ｂ２（第２の爪磁極部の一例）は、爪磁極部２１１Ｂ１の先端から一対の固定子鉄心２１１の他方に向かって軸方向に所定の長さだけ延び出す形で突出する。例えば、図３Ａに示すように、爪磁極部２１１Ｂ２は、爪磁極部２１１Ｂ１から軸方向で離れるにつれて幅が狭くなるテーパ形状を有してよい。また、例えば、爪磁極部２１１Ｂ２は、図３Ｂに示すように、爪磁極部２１１Ｂ１からの距離に依らず幅が一定であってもよい。 The claw magnetic pole portion 211B2 (an example of the second claw magnetic pole portion) projects from the tip of the claw magnetic pole portion 211B1 toward the other of the pair of stator cores 211 in an axial direction by a predetermined length. For example, as shown in FIG. 3A, the claw magnetic pole portion 211B2 may have a tapered shape in which the width becomes narrower as the distance from the claw magnetic pole portion 211B1 in the axial direction increases. Further, for example, as shown in FIG. 3B, the width of the claw magnetic pole portion 211B2 may be constant regardless of the distance from the claw magnetic pole portion 211B1.
　図２に示すように、一対の固定子鉄心２１１のうちの一方の固定子鉄心２１１に形成される爪磁極部２１１Ｂ２の先端部の位置は、軸方向において、他方の固定子鉄心２１１の軸方向の端面（ヨーク部２１１Ａの端面）の位置と略一致する。これにより、モータ１は、一方の固定子鉄心２１１に形成される爪磁極部２１１Ｂ２が他方の固定子鉄心２１１の軸方向の端面から飛び出さないようにしつつ、爪磁極部２１１Ｂ２の磁極面を最大限に広く確保することができる。そのため、モータ１のトルクを更に増加させ、モータ１の出力を更に向上させることができる。 As shown in FIG. 2, the position of the tip of the claw magnetic pole portion 211B2 formed on one of the stator cores 211 of the pair of stator cores 211 is in the axial direction of the other stator core 211. It substantially coincides with the position of the end face (end face of the yoke portion 211A). As a result, the motor 1 maximizes the magnetic pole surface of the claw magnetic pole portion 211B2 while preventing the claw magnetic pole portion 211B2 formed on one stator core 211 from protruding from the axial end surface of the other stator core 211. It can be secured as widely as possible. Therefore, the torque of the motor 1 can be further increased, and the output of the motor 1 can be further improved.
　尚、爪磁極部２１１Ｂ２は、省略されてもよい。 The claw magnetic pole portion 211B2 may be omitted.
　ヨーク部２１１Ｃは、ヨーク部２１１Ａの内周面付近の部分が一対の固定子鉄心２１１の他方に向かって所定量だけ突出する形で構成され、例えば、軸方向視でヨーク部２１１Ａより外径が小さい円環形状を有する。これにより、一対の固定子鉄心２１１は、互いのヨーク部２１１Ｃで当接し、一対の固定子鉄心２１１に対応する一対のヨーク部２１１Ａ及び爪磁極２１１Ｂ（爪磁極部２１１Ｂ１）の間に巻線２１２を収容する空間が生成される。 The yoke portion 211C is configured such that a portion of the yoke portion 211A near the inner peripheral surface projects by a predetermined amount toward the other of the pair of stator cores 211. For example, the outer diameter of the yoke portion 211C is larger than that of the yoke portion 211A in the axial direction. It has a small ring shape. As a result, the pair of stator cores 211 come into contact with each other at the yoke portions 211C, and the winding 212 is formed between the pair of yoke portions 211A and the claw magnetic poles 211B (claw magnetic pole portions 211B1) corresponding to the pair of stator cores 211. A space is created to accommodate the.
　挿通孔２１１Ｄには、挿通部材２４が挿通される。挿通孔２１１Ｄは、ヨーク部２１１Ａ及びヨーク部２１１Ｃの内周面によって実現される。 The insertion member 24 is inserted into the insertion hole 211D. The insertion hole 211D is realized by the inner peripheral surfaces of the yoke portion 211A and the yoke portion 211C.
　巻線（「コイル」とも称する）２１２は、軸方向視で円環状に巻き回される。例えば、複数相（本例では、３相）の巻線２１２同士がＹ結線（スター結線）で接続される場合、巻線２１２は、その一端がモータ１の外部端子に電気的に繋がっており、その他端が中性点に電気的に繋がっている。また、例えば、複数相の巻線２１２同士がΔ結線（デルタ結線）で接続される場合、巻線２１２は、その一端がモータ１の一の外部端子（同じ相の外部端子）に電気的に繋がっており、その他端がモータ１の他の外部端子（異なる相の外部端子）に電気的に繋がっている。モータ１の外部端子は、電源及び電源から供給される電力でモータ１を駆動する駆動装置（例えば、インバータ等）と電気的に接続される。巻線２１２は、軸方向において、一対の固定子鉄心２１１（ヨーク部２１１Ａ）の間に配置される。また、巻線２１２は、内周部が一対の固定子鉄心２１１のヨーク部２１１Ｃよりも径方向で外側になるように巻き回されている。 The winding (also referred to as "coil") 212 is wound in an annular shape in the axial direction. For example, when the windings 212 of a plurality of phases (three phases in this example) are connected by a Y connection (star connection), one end of the winding 212 is electrically connected to the external terminal of the motor 1. , The other end is electrically connected to the neutral point. Further, for example, when the windings 212 of a plurality of phases are connected by Δ connection (delta connection), one end of the winding 212 is electrically connected to one external terminal of the motor 1 (external terminal of the same phase). It is connected, and the other end is electrically connected to another external terminal (external terminal of a different phase) of the motor 1. The external terminals of the motor 1 are electrically connected to a power source and a drive device (for example, an inverter or the like) that drives the motor 1 with electric power supplied from the power source. The winding 212 is arranged between the pair of stator cores 211 (yoke portion 211A) in the axial direction. Further, the winding 212 is wound so that the inner peripheral portion is outward in the radial direction from the yoke portion 211C of the pair of stator cores 211.
　図２に示すように、一対の固定子鉄心２１１は、一方の固定子鉄心２１１の爪磁極２１１Ｂと他方の固定子鉄心２１１の爪磁極２１１Ｂとが周方向で交互に配置されるように組み合わせられる。また、円環状の巻線２１２に電機子電流が流れると、一対の固定子鉄心２１１のうちの一方の固定子鉄心２１１の爪磁極２１１Ｂと他方の固定子鉄心２１１の爪磁極２１１Ｂとは、磁化され、互いに異なる磁極を有する。これにより、一対の固定子鉄心２１１において、一方の固定子鉄心２１１から突出する一の爪磁極２１１Ｂは、周方向で隣接し、他方の固定子鉄心２１１から突出する他の爪磁極２１１Ｂと異なる磁極を有する。そのため、巻線２１２に流れる電機子電流により、一対の固定子鉄心２１１の周方向には、Ｎ極の爪磁極２１１Ｂ及びＳ極の爪磁極２１１Ｂが交互に配置される。 As shown in FIG. 2, the pair of stator cores 211 are combined so that the claw poles 211B of one stator core 211 and the claw poles 211B of the other stator core 211 are alternately arranged in the circumferential direction. .. When an armature current flows through the annular winding 212, the claw poles 211B of one of the stator cores 211 and the claw poles 211B of the other stator core 211 are magnetized. And have different magnetic poles from each other. As a result, in the pair of stator cores 211, one claw magnetic pole 211B protruding from one stator core 211 is adjacent in the circumferential direction and is different from the other claw magnetic poles 211B protruding from the other stator core 211. Has. Therefore, due to the armature current flowing through the winding 212, the N-pole claw poles 211B and the S-pole claw poles 211B are alternately arranged in the circumferential direction of the pair of stator cores 211.
　図２に示すように、複数の固定子ユニット２１は、軸方向に積層される。 As shown in FIG. 2, the plurality of stator units 21 are laminated in the axial direction.
　複数の固定子ユニット２１には、複数相（本例では、３相）分の固定子ユニット２１が複数組（本例では、２組）含まれる。具体的には、複数の固定子ユニット２１は、Ｕ相に対応する固定子ユニット２１Ａ，２１Ｂと、Ｖ相に対応する固定子ユニット２１Ｃ，２１Ｄと、Ｗ相に対応する固定子ユニット２１Ｅ，２１Ｆとを含む。これにより、モータ１には、同じ相の固定子ユニット２１が複数含まれる。そのため、同じ相の固定子ユニット２１が単数である場合に比して、モータ１の出力を向上させることができる。 The plurality of stator units 21 include a plurality of sets (two sets in this example) of stator units 21 for a plurality of phases (three phases in this example). Specifically, the plurality of stator units 21 include the stator units 21A and 21B corresponding to the U phase, the stator units 21C and 21D corresponding to the V phase, and the stator units 21E and 21F corresponding to the W phase. And include. As a result, the motor 1 includes a plurality of stator units 21 having the same phase. Therefore, the output of the motor 1 can be improved as compared with the case where the number of stator units 21 having the same phase is singular.
　尚、モータ１の相数は、２相であってもよいし、４相以上であってもよい。また、複数相分の固定子ユニット２１が３以上組み合わせられてもよい。 The number of phases of the motor 1 may be two phases or four or more phases. Further, three or more stator units 21 for a plurality of phases may be combined.
　同じ相の二つの固定子ユニット２１同士は、周方向の位置が電気角で一致するように配置される。また、異なる相の二つの固定子ユニット２１同士は、周方向の位置が電気角で１２０°異なるように配置される。 The two stator units 21 in the same phase are arranged so that their positions in the circumferential direction coincide with each other in terms of electrical angle. Further, the two stator units 21 having different phases are arranged so that their positions in the circumferential direction differ by 120 ° in terms of electrical angle.
　また、同じ相の二つの固定子ユニット２１は、軸方向で隣接するように積層される。具体的には、モータ１の先端部側から順に、Ｕ相の固定子ユニット２１Ａ，２１Ｂが隣り合うように配置され、Ｖ相の固定子ユニット２１Ｃ，２１Ｄが隣り合うように配置され、Ｗ相の固定子ユニット２１Ｅ，２１Ｆが隣り合うように配置される。 Further, two stator units 21 having the same phase are laminated so as to be adjacent to each other in the axial direction. Specifically, the U-phase stator units 21A and 21B are arranged so as to be adjacent to each other, and the V- phase stator units 21C and 21D are arranged so as to be adjacent to each other in order from the tip end side of the motor 1. The stator units 21E and 21F are arranged so as to be adjacent to each other.
　尚、Ｕ相の二つの固定子ユニット２１Ａ，２１Ｂ、Ｖ相の二つの固定子ユニット２１Ｃ，２１Ｄ、及びＷ相の二つの固定子ユニット２１Ｅ，２１Ｆのうちの一部の相の二つの固定子ユニット２１だけが軸方向で隣り合うように配置される構成であってもよい。この場合、異なる相の二つの固定子ユニット２１が隣り合う部分が増えるため、後述の相間部材２２が追加されてもよい。 It should be noted that the two stator units 21A and 21B of the U phase, the two stator units 21C and 21D of the V phase, and the two stator units of some of the two stator units 21E and 21F of the W phase are used. Only the units 21 may be arranged so as to be adjacent to each other in the axial direction. In this case, since the portion where the two stator units 21 of different phases are adjacent to each other increases, the interphase member 22 described later may be added.
　相間部材２２は、軸方向で隣接する異なる相の固定子ユニット２１の間に設けられる。これにより、異なる相の二つの固定子ユニット２１の間に所定の距離を確保し、異なる相の二つの固定子ユニット２１の間での磁束漏れを抑制することができる。相間部材２２は、例えば、非磁性体である。これにより、異なる相の二つの固定子ユニット２１の間での磁束漏れを更に抑制することができる。相間部材２２は、ＵＶ相間部材２２Ａと、ＶＷ相間部材２２Ｂとを含む。 The interphase member 22 is provided between the stator units 21 of different phases adjacent in the axial direction. As a result, a predetermined distance can be secured between the two stator units 21 of different phases, and magnetic flux leakage between the two stator units 21 of different phases can be suppressed. The interphase member 22 is, for example, a non-magnetic material. As a result, magnetic flux leakage between two stator units 21 in different phases can be further suppressed. The interphase member 22 includes a UV interphase member 22A and a VW interphase member 22B.
　ＵＶ相間部材２２Ａは、軸方向で隣接する、Ｕ相の固定子ユニット２１ＢとＶ相の固定子ユニット２１Ｃとの間に設けられる。ＵＶ相間部材２２Ａは、例えば、所定の厚みを有する略円柱形状（略円板形状）を有し、中心部分に挿通部材２４が挿通される挿通孔が形成される。以下、ＶＷ相間部材２２Ｂについても同様であってよい。 The UV interphase member 22A is provided between the U-phase stator unit 21B and the V-phase stator unit 21C, which are adjacent in the axial direction. The UV interphase member 22A has, for example, a substantially cylindrical shape (substantially disk shape) having a predetermined thickness, and an insertion hole through which the insertion member 24 is inserted is formed in the central portion. Hereinafter, the same may apply to the VW interphase member 22B.
　ＶＷ相間部材２２Ｂは、軸方向で隣接する、Ｖ相の固定子ユニット２１ＤとＷ相の固定子ユニット２１Ｅとの間に設けられる。 The VW interphase member 22B is provided between the V-phase stator unit 21D and the W-phase stator unit 21E, which are adjacent in the axial direction.
　端部部材２３は、積層される複数の固定子ユニット２１のモータ１の先端部側の端部に設けられる。具体的には、端部部材２３は、軸方向において、固定子ユニット２１Ａの固定子ユニット２１Ｂに面する側と反対側の端面に接するように設けられる。端部部材２３は、例えば、所定の厚みを有する略円柱形状（略円板形状）を有し、中心部分に挿通部材２４が挿通される挿通孔が形成される。端部部材２３は、例えば、非磁性体である。これにより、固定子ユニット２１Ａ（具体的には、モータ１の先端部側の固定子鉄心２１１）からの磁束漏れを抑制することができる。 The end member 23 is provided at the end on the tip end side of the motor 1 of the plurality of stator units 21 to be laminated. Specifically, the end member 23 is provided so as to be in contact with the end surface of the stator unit 21A on the side opposite to the side facing the stator unit 21B in the axial direction. The end member 23 has, for example, a substantially cylindrical shape (substantially disk shape) having a predetermined thickness, and an insertion hole through which the insertion member 24 is inserted is formed in the central portion. The end member 23 is, for example, a non-magnetic material. As a result, magnetic flux leakage from the stator unit 21A (specifically, the stator core 211 on the tip end side of the motor 1) can be suppressed.
　挿通部材２４は、モータ１の先端部側から順に、端部部材２３、固定子ユニット２３Ａ，２３Ｂ、ＵＶ相間部材２２Ａ、固定子ユニット２３Ｃ，２３Ｄ、ＶＷ相間部材２２Ｂ、固定子ユニット２３Ｅ，２３Ｆを挿通した状態で、先端部が固定部材３０に固定される。挿通部材２４は、例えば、先端部に雄ねじ部を有し、固定部材３０の対応する雌ネジ部に締め込まれることにより固定部材３０に固定される。また、挿通部材２４は、例えば、略円筒形状を有し、内周面により実現される孔部に回転軸部材１３が回転可能に配置される。また、挿通部材２４は、モータ１の先端側において、固定子ユニット２１の挿通孔２１１Ｄの内径よりも相対的に大きい外径を有する頭部を有する。これにより、例えば、挿通部材２４が固定部材３０にある程度締め込まれることで、頭部から端部部材２３に軸方向で固定部材３０に向かう方向の力を作用させることができる。そのため、複数の固定子ユニット２１（固定子ユニット２１Ａ～２１Ｆ）及び相間部材２２（ＵＶ相間部材２２Ａ、ＶＷ相間部材２２Ｂ）を端部部材２３及び固定部材３０で挟み込む形で固定部材３０に固定することができる。 The insertion member 24 includes end members 23, stator units 23A and 23B, UV interphase members 22A, stator units 23C and 23D, VW interphase members 22B, and stator units 23E and 23F in this order from the tip end side of the motor 1. In the inserted state, the tip portion is fixed to the fixing member 30. The insertion member 24 has, for example, a male screw portion at the tip portion, and is fixed to the fixing member 30 by being fastened to the corresponding female screw portion of the fixing member 30. Further, the insertion member 24 has, for example, a substantially cylindrical shape, and the rotary shaft member 13 is rotatably arranged in a hole formed by the inner peripheral surface. Further, the insertion member 24 has a head having an outer diameter relatively larger than the inner diameter of the insertion hole 211D of the stator unit 21 on the tip end side of the motor 1. Thereby, for example, by tightening the insertion member 24 to the fixing member 30 to some extent, a force in the axial direction toward the fixing member 30 can be applied to the end member 23 from the head. Therefore, a plurality of stator units 21 (stator units 21A to 21F) and interphase members 22 (UV interphase members 22A, VW interphase members 22B) are fixed to the fixing member 30 by being sandwiched between the end member 23 and the fixing member 30. be able to.
　固定部材３０は、例えば、軸方向視で回転子１０（回転子鉄心１１）よりも大きい外径の略円板形状を有し、軸方向に所定の厚みを有する。固定部材３０には、上述の如く、挿通部材２４を介して、回転子１０が回転可能に支持され、固定子２０が固定される。 The fixing member 30 has, for example, a substantially disk shape having an outer diameter larger than that of the rotor 10 (rotor core 11) in the axial direction, and has a predetermined thickness in the axial direction. As described above, the rotor 10 is rotatably supported by the fixing member 30 via the insertion member 24, and the stator 20 is fixed.
　［同じ相の二つの固定子ユニットの構成］
　次に、図４～図６を参照して、軸方向で隣接する同じ相の二つの固定子ユニット２１の詳細な構成について説明する。以下、Ｕ相の二つの固定子ユニット２１Ａ，２１Ｂの関係は、Ｖ相の二つの固定子ユニット２１Ｃ，２１Ｄの関係及びＷ相の二つの固定子ユニット２１Ｅ，２１Ｆの関係にも当てはまるため、Ｕ相の二つの固定子ユニット２１Ａ，２１Ｂを中心に説明する。 [Structure of two stator units in the same phase]
Next, with reference to FIGS. 4 to 6, a detailed configuration of two stator units 21 having the same phase adjacent in the axial direction will be described. Hereinafter, the relationship between the two stator units 21A and 21B in the U phase also applies to the relationship between the two stator units 21C and 21D in the V phase and the relationship between the two stator units 21E and 21F in the W phase. The two phase stator units 21A and 21B will be mainly described.
　図４は、同じ相の二つの固定子ユニット２１の構成を示す斜視図である。具体的には、図４は、Ｕ相の二つの固定子ユニット２１Ａ，２１Ｂの構成を示す斜視図である。図５Ａ、図５Ｂは、それぞれ、同じ相の二つの固定子ユニット２１に対応する二つの巻線２１２が直列接続される場合の二つの巻線２１２の構成の一例及び他の例を示す図である。図６Ａ、図６Ｂは、それぞれ、同じ相の二つの固定子ユニット２１に対応する二つの巻線２１２が並列接続される場合の二つの巻線２１２の構成の一例及び他の例を示す図である。 FIG. 4 is a perspective view showing the configuration of two stator units 21 having the same phase. Specifically, FIG. 4 is a perspective view showing the configuration of two U-phase stator units 21A and 21B. 5A and 5B are diagrams showing an example and another example of the configuration of the two windings 212 when the two windings 212 corresponding to the two stator units 21 of the same phase are connected in series, respectively. is there. 6A and 6B are diagrams showing an example and another example of the configuration of the two windings 212 when the two windings 212 corresponding to the two stator units 21 of the same phase are connected in parallel, respectively. is there.
　尚、図４の爪磁極２１１Ｂに付記される"Ｎ"或いは"Ｓ"の文字は、固定子ユニット２１Ａ，２１Ｂのそれぞれの巻線２１２に電機子電流が流れているあるタイミングの磁極を表しており、爪磁極２１１Ｂの磁極は電機子電流の向きに応じて変化する。また、図５Ａ，図５Ｂ、図６Ａ、及び図６Ｂでは、固定子ユニット２１Ａ，２１Ｂに対応する巻線２１２がそれぞれ巻線２１２Ａ，２１２Ｂで表される。 The letter "N" or "S" attached to the claw magnetic pole 211B in FIG. 4 represents a magnetic pole at a certain timing in which an armature current is flowing in each winding 212 of the stator units 21A and 21B. The magnetic pole of the claw pole 211B changes according to the direction of the armature current. Further, in FIGS. 5A, 5B, 6A, and 6B, the windings 212 corresponding to the stator units 21A and 21B are represented by windings 212A and 212B, respectively.
　図４に示すように、同じＵ相の固定子ユニット２１Ａ，２１Ｂは、互いに軸方向で面している固定子鉄心２１１（ヨーク部２１１Ａ）同士が接触している。固定子ユニット２１Ａ，２１Ｂは、互いの爪磁極２１１Ｂが略鏡像の関係になるように配置されている。略鏡像の関係には、例えば、モータ１の製造（組立）上の組立公差に収まるような、固定子ユニット２１Ａ，２１Ｂの間での周方向での微小なずれが存在する場合が含まれる。具体的には、固定子ユニット２１Ａ，２１Ｂは、互いの爪磁極２１１Ｂがその接触面を基準とする略対称の関係になるように配置されている。 As shown in FIG. 4, in the same U-phase stator units 21A and 21B, the stator cores 211 (yoke portion 211A) facing each other in the axial direction are in contact with each other. The stator units 21A and 21B are arranged so that the claw magnetic poles 211B of the stator units 21A and 21B have a substantially mirror image relationship with each other. The relationship of the substantially mirror image includes, for example, a case where there is a slight deviation in the circumferential direction between the stator units 21A and 21B so as to be within the assembly tolerance in the manufacturing (assembly) of the motor 1. Specifically, the stator units 21A and 21B are arranged so that the claw magnetic poles 211B of each other have a substantially symmetrical relationship with respect to the contact surface thereof.
　また、モータ１の複数相の巻線２１２同士がＹ結線で接続される場合、固定子ユニット２１Ａ，２１Ｂは、互いの巻線２１２がモータ１の電源側の回路端部、即ち、モータ１の外部端子から見て逆回りに巻かれている。同様に、固定子ユニット２１Ａ，２１Ｂは、中性点側の回路端部から見て逆回りに巻かれている。また、モータ１の複数相の巻線２１２同士がΔ結線で接続される場合、固定子ユニット２１Ａ，２１Ｂは、互いの巻線２１２がモータ１の回路端部、即ち、巻線２１２の両端が電気的に繋がっている２つの外部端子の一方及び他方から見て逆回りに巻かれている。"互いの巻線２１２がモータ１の電源側及び中性点側の回路端部から見て逆回りに巻かれている"とは、同じ相（本例では、Ｕ相）の交流電流が流れる二つの円環状の巻線２１２には、互いに逆回りの電流が流れることを意味する。同様に、"互いの巻線２１２がモータ１の回路端部（即ち、２つの外部端子の一方及び他方）から見て逆回りに巻かれている"とは、同じ相（本例では、Ｕ相）の交流電流が流れる二つの円環状の巻線２１２には、互いに逆回りの電流が流れることを意味する。これにより、図４に示すように、固定子ユニット２１Ａ，２１Ｂの面している（接触している）二つの固定子鉄心２１１の爪磁極２１１Ｂは、固定子ユニット２１Ａ，２１Ｂの二つの巻線２１２に流れる電機子電流により、磁化され、互いに同じ磁極を有する。そのため、固定子ユニット２１Ａ，２１Ｂの面している（接触している）二つの固定子鉄心２１１に形成される互いの爪磁極２１１Ｂ（爪磁極部２１１Ｂ１）における磁束方向が略同じになる。 Further, when the multi-phase windings 212 of the motor 1 are connected by a Y connection, the stator units 21A and 21B have the windings 212 of each other at the circuit end on the power supply side of the motor 1, that is, the motor 1. It is wound in the opposite direction when viewed from the external terminal. Similarly, the stator units 21A and 21B are wound in the opposite direction when viewed from the circuit end on the neutral point side. Further, when the multi-phase windings 212 of the motor 1 are connected to each other by a Δ connection, the stator units 21A and 21B have the windings 212 of each other at the circuit end of the motor 1, that is, both ends of the winding 212. It is wound in the opposite direction when viewed from one and the other of the two electrically connected external terminals. "The windings 212 of each other are wound in the opposite direction when viewed from the circuit end on the power supply side and the neutral point side of the motor 1" means that an alternating current of the same phase (U phase in this example) flows. This means that currents in opposite directions flow through the two annular windings 212. Similarly, "the windings 212 of each other are wound in opposite directions when viewed from the circuit end of the motor 1 (that is, one and the other of the two external terminals)" is the same phase (in this example, U). This means that currents in opposite directions flow through the two annular windings 212 through which the alternating current of the phase) flows. As a result, as shown in FIG. 4, the claw magnetic poles 211B of the two stator cores 211 facing (contacting) the stator units 21A and 21B have two windings of the stator units 21A and 21B. It is magnetized by the armature current flowing through 212 and has the same magnetic poles as each other. Therefore, the magnetic flux directions in the claw magnetic poles 211B (claw magnetic pole portions 211B1) formed on the two stator cores 211 facing (contacting) the stator units 21A and 21B are substantially the same.
　仮に、軸方向で互いに異なる相が隣接する形の並び（例えば、Ｕ相、Ｖ相、及びＷ相の順の並び）の複数相の固定子ユニット２１が単純に軸方向に積層されると、全ての固定子ユニット２１は、異なる相の固定子ユニット２１と隣り合う。すると、全ての隣り合う二つの固定子ユニット２１の組み合わせについて、互いの固定子鉄心２１１の間での磁束漏れを抑制するため、隣り合う二つの固定子ユニット２１の間に間隔を設けたり、その間隔に上述の相間部材２２を設けたりする必要が生じうる。 If the multi-phase stator units 21 in an arrangement in which different phases are adjacent to each other in the axial direction (for example, an arrangement in the order of U phase, V phase, and W phase) are simply stacked in the axial direction, All stator units 21 are adjacent to stator units 21 in different phases. Then, for all the combinations of the two stator units 21 adjacent to each other, in order to suppress the magnetic flux leakage between the stator cores 211 of each other, a space is provided between the two stator units 21 adjacent to each other. It may be necessary to provide the above-mentioned interphase member 22 at intervals.
　また、同じ相の複数の固定子ユニット２１が隣り合うように積層されても、面している二つの固定子鉄心２１１に形成される爪磁極２１１Ｂの電機子電流による磁極が互いに異なっていると、略鏡像の関係にある互いの爪磁極２１１Ｂの磁束方向が相違する。また、隣り合う同じ相の二つの固定子ユニット２１の爪磁極２１１Ｂの配置が略鏡像の関係でない（具体的には、二つの固定子ユニット２１が同じ向きで重ねられている）と、同様に、面している二つの固定子鉄心２１１の爪磁極２１１Ｂの磁束方向が相違する。すると、面している二つの固定子鉄心２１１の間での磁束漏れを抑制するため、上記と同様、隣り合う同じ相の二つの固定子ユニット２１の間に間隔を設けたり、その間隔に上述の相間部材２２と同様の部材を設けたりする必要が生じうる。 Further, even if a plurality of stator units 21 having the same phase are laminated so as to be adjacent to each other, the magnetic fluxes of the claw magnetic poles 211B formed on the two facing stator cores 211 due to the armature current are different from each other. , The magnetic flux directions of the claw magnetic poles 211B, which are in a substantially mirror image relationship, are different from each other. Similarly, if the arrangement of the claw magnetic flux 211B of two stator units 21 of the same phase adjacent to each other is not in a substantially mirror image relationship (specifically, the two stator units 21 are overlapped in the same direction). , The magnetic flux directions of the claw magnetic poles 211B of the two stator cores 211 facing each other are different. Then, in order to suppress magnetic flux leakage between the two stator cores 211 facing each other, a gap is provided between two stator units 21 of the same phase adjacent to each other in the same manner as described above, or the gap is described above. It may be necessary to provide a member similar to the interphase member 22 of the above.
　よって、何れの場合でも、結果として、モータの軸方向の寸法が増加してしまう可能性がある。 Therefore, in any case, as a result, the axial dimension of the motor may increase.
　これに対して、本実施形態では、上述の如く、固定子ユニット２１Ａ，２１Ｂの面している（接触している）二つの固定子鉄心２１１に形成される爪磁極２１１Ｂの磁束方向を略同じにすることができる。そのため、固定子ユニット２１Ａ，２１Ｂの間の間隔が相対的に小さい場合やその間隔に磁束漏れを抑制する部材が設けられない場合であっても、面している二つの固定子鉄心２１１の間での磁束漏れを抑制することができる。よって、軸方向の寸法を相対的に縮小し、モータ１を小型化することができる。 On the other hand, in the present embodiment, as described above, the magnetic flux directions of the claw magnetic poles 211B formed on the two facing (contacting) stator cores 211 of the stator units 21A and 21B are substantially the same. Can be. Therefore, even when the distance between the stator units 21A and 21B is relatively small or when a member for suppressing magnetic flux leakage is not provided at the distance, between the two stator cores 211 facing each other. It is possible to suppress the magnetic flux leakage in. Therefore, the axial dimension can be relatively reduced and the motor 1 can be miniaturized.
　また、上述の如く、一対の固定子鉄心２１１のうちの一方の固定子鉄心２１１に形成される爪磁極部２１１Ｂ２の先端部の位置は、軸方向において、他方の固定子鉄心２１１の軸方向の端面（ヨーク部２１１Ａの端面）の位置と略一致する。そのため、図４に示すように、隣り合う同じ相の二つの固定子ユニット２１の両端部に位置する二つの固定子鉄心２１１に形成される爪磁極部２１１Ｂ２（図中のＳ極の爪磁極部２１１Ｂ２）の先端部は、互いに接触する。よって、爪磁極部２１１Ｂ２の磁極面を最大限に広く確保し、モータ１のトルクを増加させることができる。 Further, as described above, the position of the tip of the claw magnetic pole portion 211B2 formed on one of the stator cores 211 of the pair of stator cores 211 is in the axial direction and in the axial direction of the other stator core 211. It substantially coincides with the position of the end face (the end face of the yoke portion 211A). Therefore, as shown in FIG. 4, the claw magnetic pole portion 211B2 (claw magnetic pole portion of the S pole in the drawing) formed on the two stator cores 211 located at both ends of the two stator units 21 of the same phase adjacent to each other. The tips of 211B2) come into contact with each other. Therefore, the magnetic pole surface of the claw magnetic pole portion 211B2 can be secured as wide as possible, and the torque of the motor 1 can be increased.
　同じ相の交流電流が流れる二つの巻線２１２は、直列接続されてもよいし、並列接続されてもよい。複数相の巻線２１２同士がＹ結線で接続される場合、同じ相の交流電流が流れ、直列接続或いは並列接続される二つの巻線２１２の接続体は、その一端が電気回路上で外部端子に接続され、他端が中性点に接続される。そのため、同じ相の二つの固定子ユニット２１Ａ，２１Ｂに対応する二つの巻線２１２は、モータ１の電源（外部端子）側及び中性点側の回路端部のそれぞれから見て逆回りに巻かれることによって、互いに逆回りの電流が流れる。同様に、複数相の巻線２１２同士がΔ結線で接続される場合、同じ相の交流電流が流れ、直列接続或いは並列接続される二つの巻線２１２の接続体は、その一端が電気回路上で一の外部端子に接続され、他端が他の外部端子に接続される。そのため、同じ相の二つの固定子ユニット２１Ａ，２１Ｂに対応する二つの巻線２１２は、回路端部のモータ１の外部端子から見て逆回りに巻かれることによって、互いに逆回りの電流が流れる。以下、複数相の巻線２１２同士がＹ結線で接続される場合を中心に説明する。 The two windings 212 through which alternating current of the same phase flows may be connected in series or in parallel. When the multi-phase windings 212 are connected by Y connection, an alternating current of the same phase flows, and one end of the connection body of the two windings 212 connected in series or in parallel is an external terminal on the electric circuit. And the other end is connected to the neutral point. Therefore, the two windings 212 corresponding to the two stator units 21A and 21B of the same phase are wound in opposite directions when viewed from the circuit ends on the power supply (external terminal) side and the neutral point side of the motor 1. By being pulled, currents that rotate in opposite directions flow. Similarly, when a plurality of phase windings 212 are connected by a delta connection, an alternating current of the same phase flows, and one end of a connector of two windings 212 connected in series or in parallel is on an electric circuit. Is connected to one external terminal and the other end is connected to the other external terminal. Therefore, the two windings 212 corresponding to the two stator units 21A and 21B of the same phase are wound in the opposite directions when viewed from the external terminal of the motor 1 at the end of the circuit, so that currents in opposite directions flow to each other. .. Hereinafter, the case where the multi-phase windings 212 are connected by a Y connection will be mainly described.
　例えば、図５Ａに示すように、固定子ユニット２１Ａ，２１Ｂに対応する巻線２１２Ａ，２１２Ｂは、それぞれ、径方向の内周部に位置する端部（以下、便宜的に「内周端部」）２１２Ａ１，２１２Ｂ１から図中で反時計回り（左回り）巻かれている。巻線２１２Ａの径方向の外周部に位置する端部（以下、便宜的に「外周端部」）２１２Ａ２と巻線２１２Ｂの径方向の外周部に位置する外周端部２１２Ｂ２とは、接続部２１３により接続される。これにより、巻線２１２Ａ，２１２Ｂは、電気的に直列接続される。内周端部２１２Ａ１，２１２Ｂ１のうちの一方は、外部端子に接続され、他方は、中性点に接続される。 For example, as shown in FIG. 5A, the windings 212A and 212B corresponding to the stator units 21A and 21B have end portions located at the inner peripheral portion in the radial direction (hereinafter, "inner peripheral end portion" for convenience). ) It is wound counterclockwise (counterclockwise) in the figure from 212A1,212B1. The connection portion 213 is the end portion located on the radial outer peripheral portion of the winding 212A (hereinafter, “outer peripheral end portion” for convenience) 212A2 and the outer peripheral end portion 212B2 located on the radial outer peripheral portion of the winding 212B. Connected by. As a result, the windings 212A and 212B are electrically connected in series. One of the inner peripheral ends 212A1,212B1 is connected to the external terminal, and the other is connected to the neutral point.
　本例では、モータ１の電源側或いは中性点側の回路端部に相当する内周端部２１２Ａ１から見て、巻線２１２Ａは、図中で反時計回り（左回り）に巻かれている。一方、内周端部２１２Ａ１から見て、巻線２１２Ｂは、巻き始め（始端）が外周端部２１２Ｂ２になるため、図中で時計回り（右回り）に巻かれている。また、モータ１の中性点側或いは電源側の回路端部に相当する内周端部２１２Ｂ１から見て、巻線２１２Ｂは、図中で反時計回り（左回り）に巻かれている。一方、内周端部２１２Ｂ１から見て、巻線２１２Ａは、巻き始め（始端）が外周端部２１２Ａ２になるため、図中で時計回り（右回り）に巻かれている。そのため、二つの巻線２１２Ａ，２１２Ｂには、逆回りの電流が流れる。また、本例では、二つの巻線２１２Ａ，２１２Ｂのそれぞれの径方向の外周部に位置する外周端部２１２Ａ２，２１２Ｂ２の間が接続部２１３により接続される。そのため、接続部２１３は、その距離が相対的に短くなり、且つ、二つの巻線２１２Ａ，２１２Ｂの内周部及び外周部の間に跨ることもない。よって、設計者は、他の部品の間の空間で接続部２１３を通すための設計を比較的容易に行うことができる。 In this example, the winding 212A is wound counterclockwise (counterclockwise) in the drawing when viewed from the inner peripheral end portion 212A1 corresponding to the circuit end on the power supply side or the neutral point side of the motor 1. .. On the other hand, when viewed from the inner peripheral end portion 212A1, the winding 212B is wound clockwise (clockwise) in the drawing because the winding start (starting end) is the outer peripheral end portion 212B2. Further, the winding 212B is wound counterclockwise (counterclockwise) in the drawing when viewed from the inner peripheral end portion 212B1 corresponding to the circuit end portion on the neutral point side or the power supply side of the motor 1. On the other hand, when viewed from the inner peripheral end portion 212B1, the winding 212A is wound clockwise (clockwise) in the drawing because the winding start (starting end) is the outer peripheral end portion 212A2. Therefore, a reverse current flows through the two windings 212A and 212B. Further, in this example, the outer peripheral end portions 212A2 and 212B2 located at the outer peripheral portions of the two windings 212A and 212B in the radial direction are connected by the connecting portion 213. Therefore, the distance between the connecting portions 213 is relatively short, and the connecting portions 213 do not straddle between the inner peripheral portions and the outer peripheral portions of the two windings 212A and 212B. Therefore, the designer can relatively easily design the connection portion 213 in the space between the other parts.
　尚、本例において、接続部２１３は、外周端部２１２Ａ２，２１２Ｂ２の間に代えて、二つの巻線２１２Ａ，２１２Ｂのそれぞれの径方向の内周部に位置する内周端部２１２Ａ１，２１２Ｂ１の間を接続してもよい。 In this example, the connecting portion 213 is replaced with the inner peripheral end portions 212A1,212B1 located at the inner peripheral portions of the two windings 212A and 212B in the radial direction instead of the outer peripheral end portions 212A2 and 212B2. You may connect between them.
　このように、物理的に同じ方向に巻かれた二つの巻線２１２を外周端部どうし或いは内周端部どうしで直列接続する。これにより、モータ１の電源側及び中性点側の回路端部から見て、互いに逆回りに巻かれた同じ相の二つの巻線２１２を構成することができる。 In this way, the two windings 212 that are physically wound in the same direction are connected in series between the outer peripheral ends or the inner peripheral ends. As a result, it is possible to form two windings 212 of the same phase wound in opposite directions when viewed from the circuit ends on the power supply side and the neutral point side of the motor 1.
　また、例えば、図５Ｂに示すように、固定子ユニット２１Ａに対応する巻線２１２Ａは、内周端部２１２Ａ１から図中で反時計回り（左回り）に巻かれている。固定子ユニット２１Ｂに対応する巻線２１２Ｂは、内周端部２１２Ｂ１から図中で時計回り（右回り）に巻かれている。巻線２１２Ａの外周端部２１２Ａ２と巻線２１２Ｂの内周端部２１２Ｂ１との間は、接続部２１３により接続される。これにより、巻線２１２Ａ，２１２Ｂは、電気的に直列接続される。内周端部２１２Ａ１及び外周端部２１２Ｂ２のうちの一方は、外部端子に接続され、他方は中性点に接続される。 Further, for example, as shown in FIG. 5B, the winding 212A corresponding to the stator unit 21A is wound counterclockwise (counterclockwise) in the drawing from the inner peripheral end portion 212A1. The winding 212B corresponding to the stator unit 21B is wound clockwise (clockwise) from the inner peripheral end portion 212B1 in the drawing. The outer peripheral end portion 212A2 of the winding 212A and the inner peripheral end portion 212B1 of the winding 212B are connected by a connecting portion 213. As a result, the windings 212A and 212B are electrically connected in series. One of the inner peripheral end portion 212A1 and the outer peripheral end portion 212B2 is connected to the external terminal, and the other is connected to the neutral point.
　本例では、モータ１の電源（外部端子）側或いは中性点側の回路端部に相当する内周端部２１２Ａ１から見て、巻線２１２Ａは、図中で反時計回り（左回り）に巻かれている。一方、内周端部２１２Ａ１から見て、巻線２１２Ｂは、巻き始め（始端）が内周端部２１２Ｂ１になるため、図中で時計回り（右回り）に巻かれている。また、モータ１の中性点側或いは電源側の回路端部に相当する外周端部２１２Ｂ２から見て、巻線２１２Ｂは、図中で反時計回り（左回り）に巻かれている。一方、外周端部２１２Ｂ２から見て、巻線２１２Ａは、巻き始め（始端）が外周端部２１２Ａ２になるため、図中で時計回り（右回り）に巻かれている。そのため、二つの巻線２１２Ａ，２１２Ｂには、逆回りの電流が流れる。 In this example, the winding 212A is counterclockwise (counterclockwise) in the drawing when viewed from the inner peripheral end 212A1 corresponding to the circuit end on the power supply (external terminal) side or the neutral point side of the motor 1. It is rolled up. On the other hand, when viewed from the inner peripheral end portion 212A1, the winding 212B is wound clockwise (clockwise) in the drawing because the winding start (starting end) is the inner peripheral end portion 212B1. Further, the winding 212B is wound counterclockwise (counterclockwise) in the drawing when viewed from the outer peripheral end portion 212B2 corresponding to the circuit end portion on the neutral point side or the power supply side of the motor 1. On the other hand, when viewed from the outer peripheral end portion 212B2, the winding 212A is wound clockwise (clockwise) in the drawing because the winding start (starting end) is the outer peripheral end portion 212A2. Therefore, a reverse current flows through the two windings 212A and 212B.
　尚、本例では、接続部２１３は、外周端部２１２Ａ２と内周端部２１２Ｂ１との間に代えて、内周端部２１２Ａ１と外周端部２１２Ｂ２との間を接続してもよい。 In this example, the connecting portion 213 may connect between the inner peripheral end portion 212A1 and the outer peripheral end portion 212B2 instead of between the outer peripheral end portion 212A2 and the inner peripheral end portion 212B1.
　このように、物理的に逆回りに巻かれた二つの巻線２１２を一方の内周端部と他方の外周端部とで直列接続することにより、電気回路上で互いに逆回りに巻かれた同じ相の二つの巻線２１２を構成することができる。 In this way, by connecting the two windings 212 physically wound in opposite directions in series at one inner peripheral end and the other outer peripheral end, the two windings are wound in opposite directions on the electric circuit. Two windings 212 of the same phase can be configured.
　また、例えば、図６Ａに示すように、固定子ユニット２１Ａ，２１Ｂに対応する巻線２１２Ａ，２１２Ｂは、それぞれ、内周端部２１２Ａ１，２１２Ｂ１から図中で時計回り（右回り）に巻かれている。巻線２１２Ａの外周端部２１２Ａ２と巻線２１２Ｂの内周端部２１２Ｂ１との間は、接続部２１４により接続され、接続部２１４は、外部端子に接続される。また、巻線２１２Ａの内周端部２１２Ａ１及び巻線２１２Ｂの外周端部２１２Ｂ２は、中性点に接続される。これにより、二つの巻線２１２Ａ，２１２Ｂは、電気的に並列接続される。 Further, for example, as shown in FIG. 6A, the windings 212A and 212B corresponding to the stator units 21A and 21B are wound clockwise (clockwise) from the inner peripheral end portions 212A1,212B1 in the drawing, respectively. There is. The outer peripheral end portion 212A2 of the winding 212A and the inner peripheral end portion 212B1 of the winding 212B are connected by a connecting portion 214, and the connecting portion 214 is connected to an external terminal. Further, the inner peripheral end portion 212A1 of the winding 212A and the outer peripheral end portion 212B2 of the winding 212B are connected to the neutral point. As a result, the two windings 212A and 212B are electrically connected in parallel.
　本例では、モータ１の電源（外部端子）側の回路端部に相当する外周端部２１２Ａ２（内周端部２１２Ｂ１）から見て、巻線２１２Ａは、図中で反時計回り（左回り）に巻かれている。一方、モータ１の電源（外部端子）側の回路端部に相当する内周端部２１２Ｂ１（外周端部２１２Ａ２）から見て、巻線２１２Ｂは、図中で時計回り（右回り）に巻かれている。また、モータ１の中性点側の回路端部に相当する内周端部２１２Ａ１（外周端部２１２Ｂ２）から見て、巻線２１２Ａは、図中で時計回り（右回り）に巻かれている。一方、モータ１の中性点側の回路端部に相当する外周端部２１２Ｂ２（内周端部２１２Ａ１）から見て、巻線２１２Ｂは、反時計回り（左回り）に巻かれている。そのため、二つの巻線２１２Ａ，２１２Ｂには、逆回りの電流が流れる。 In this example, the winding 212A is counterclockwise (counterclockwise) in the drawing when viewed from the outer peripheral end 212A2 (inner peripheral end 212B1) corresponding to the circuit end on the power supply (external terminal) side of the motor 1. It is wrapped in. On the other hand, when viewed from the inner peripheral end portion 212B1 (outer peripheral end portion 212A2) corresponding to the circuit end on the power supply (external terminal) side of the motor 1, the winding 212B is wound clockwise (clockwise) in the drawing. ing. Further, the winding 212A is wound clockwise (clockwise) in the drawing when viewed from the inner peripheral end portion 212A1 (outer peripheral end portion 212B2) corresponding to the circuit end on the neutral point side of the motor 1. .. On the other hand, the winding 212B is wound counterclockwise (counterclockwise) when viewed from the outer peripheral end portion 212B2 (inner peripheral end portion 212A1) corresponding to the circuit end on the neutral point side of the motor 1. Therefore, a reverse current flows through the two windings 212A and 212B.
　尚、本例では、巻線２１２Ａの外周端部２１２Ａ２及び巻線２１２Ｂの内周端部２１２Ｂ１が中性点に接続され、巻線２１２Ａの内周端部２１２Ａ１及び巻線２１２Ｂの外周端部２１２Ｂ２が接続部２１４を介して外部端子に接続されてもよい。 In this example, the outer peripheral end 212A2 of the winding 212A and the inner peripheral end 212B1 of the winding 212B are connected to the neutral point, and the inner peripheral end 212A1 of the winding 212A and the outer peripheral end 212B2 of the winding 212B are connected. May be connected to the external terminal via the connection portion 214.
　このように、物理的に同じ方向に巻かれた二つの巻線２１２を一方の内周端部及び他方の外周端部の間並びに一方の外周端部及び他方の内周端部の間で並列接続する。これにより、モータ１の電源側及び中性点側の回路端部から見て、互いに逆回りに巻かれた同じ相の二つの巻線２１２を構成することができる。 In this way, two windings 212 that are physically wound in the same direction are arranged in parallel between one inner peripheral end and the other outer peripheral end, and between one outer peripheral end and the other inner peripheral end. Connecting. As a result, it is possible to form two windings 212 of the same phase wound in opposite directions when viewed from the circuit ends on the power supply side and the neutral point side of the motor 1.
　また、例えば、図６Ｂに示すように、固定子ユニット２１Ａに対応する巻線２１２Ａは、内周端部２１２Ａ１から図中で反時計回り（左回り）に巻かれている。固定子ユニット２１Ｂに対応する巻線２１２Ｂは、内周端部２１２Ｂ１から図中で時計回り（右回り）に巻かれている。巻線２１２Ａの外周端部２１２Ａ２と巻線２１２Ｂの外周端部２１２Ｂ２とは、接続部２１４により接続され、接続部２１４は、外部端子に接続される。また、内周端部２１２Ａ１，２１２Ｂ１は、中性点に接続される。これにより、二つの巻線２１２Ａ，２１２Ｂは、電気的に並列接続される。 Further, for example, as shown in FIG. 6B, the winding 212A corresponding to the stator unit 21A is wound counterclockwise (counterclockwise) in the drawing from the inner peripheral end portion 212A1. The winding 212B corresponding to the stator unit 21B is wound clockwise (clockwise) from the inner peripheral end portion 212B1 in the drawing. The outer peripheral end portion 212A2 of the winding 212A and the outer peripheral end portion 212B2 of the winding 212B are connected by a connecting portion 214, and the connecting portion 214 is connected to an external terminal. Further, the inner peripheral end portions 212A1,212B1 are connected to the neutral point. As a result, the two windings 212A and 212B are electrically connected in parallel.
　本例では、モータ１の電源（外部端子）側の回路端部に相当する外周端部２１２Ａ２（外周端部２１２Ｂ２）から見て、巻線２１２Ａは、図中で時計回り（右回り）に巻かれている。一方、モータ１の電源（外部端子）側の回路端部に相当する外周端部２１２Ｂ２（外周端部２１２Ａ２）から見て、巻線２１２Ｂは、図中で反時計回り（左回り）に巻かれている。また、モータ１の中性点側の回路端部に相当する内周端部２１２Ａ１（内周端部２１２Ｂ１）から見て、巻線２１２Ａは、図中で反時計回り（左回り）に巻かれている。一方、モータ１の中性点側の回路端部に相当する内周端部２１２Ｂ１（内周端部２１２Ａ１）から見て、巻線２１２Ｂは、図中で時計回り（右回り）に巻かれている。そのため、二つの巻線２１２Ａ，２１２Ｂには、逆回りの電流が流れる。 In this example, the winding 212A is wound clockwise (clockwise) in the drawing when viewed from the outer peripheral end portion 212A2 (outer peripheral end portion 212B2) corresponding to the circuit end on the power supply (external terminal) side of the motor 1. It has been done. On the other hand, when viewed from the outer peripheral end portion 212B2 (outer peripheral end portion 212A2) corresponding to the circuit end on the power supply (external terminal) side of the motor 1, the winding 212B is wound counterclockwise (counterclockwise) in the drawing. ing. Further, when viewed from the inner peripheral end portion 212A1 (inner peripheral end portion 212B1) corresponding to the circuit end on the neutral point side of the motor 1, the winding 212A is wound counterclockwise (counterclockwise) in the drawing. ing. On the other hand, when viewed from the inner peripheral end portion 212B1 (inner peripheral end portion 212A1) corresponding to the circuit end on the neutral point side of the motor 1, the winding 212B is wound clockwise (clockwise) in the drawing. There is. Therefore, a reverse current flows through the two windings 212A and 212B.
　尚、本例では、内周端部２１２Ａ１，２１２Ｂ１が接続部２１４を介して外部端子に接続され、外周端部２１２Ａ２，２１２Ｂ２が中性点に接続されてもよい。 In this example, the inner peripheral end portions 212A1,212B1 may be connected to the external terminal via the connecting portion 214, and the outer peripheral end portions 212A2,212B2 may be connected to the neutral point.
　このように、物理的に逆回りに巻かれた二つの巻線２１２を外周端部どうし及び内周端部どうしで並列接続する。これにより、モータ１の電源側及び中性点側の回路端部から見て、互いに逆回りに巻かれた同じ相の二つの巻線２１２を構成することができる。 In this way, the two windings 212 physically wound in opposite directions are connected in parallel between the outer peripheral ends and the inner peripheral ends. As a result, it is possible to form two windings 212 of the same phase wound in opposite directions when viewed from the circuit ends on the power supply side and the neutral point side of the motor 1.
　［作用］
　次に、本実施形態に係るモータ１の作用について説明する。 [Action]
Next, the operation of the motor 1 according to the present embodiment will be described.
　本実施形態では、軸方向に隣接する同じ相の二つの固定子ユニット２１は、互いの爪磁極２１１Ｂが略鏡像の関係で配置される。そして、軸方向に隣接する同じ相の二つの固定子ユニット２１は、互いの巻線２１２がモータ１の所定の外部端子から見て逆向きに巻かれている。 In the present embodiment, the two stator units 21 having the same phase adjacent to each other in the axial direction are arranged so that the claw magnetic poles 211B are substantially mirror images of each other. Then, in the two stator units 21 having the same phase adjacent to each other in the axial direction, the windings 212 of each other are wound in opposite directions when viewed from a predetermined external terminal of the motor 1.
　また、本実施形態では、軸方向で隣接する同じ相の二つの固定子ユニット２１は、互いの固定子鉄心２１１の面している軸方向の端部（ヨーク部２１１Ａ）に略鏡像の関係で配置される爪磁極２１１Ｂの電機子電流による磁極の極性が同じである。 Further, in the present embodiment, the two stator units 21 having the same phase adjacent to each other in the axial direction have a substantially mirror image relationship with the axial end portion (yoke portion 211A) of the stator cores 211 facing each other. The polarities of the magnetic poles of the arranged claw magnetic poles 211B due to the armature current are the same.
　これにより、モータ１は、同じ相の二つの固定子ユニット２１の間の軸方向の距離が相対的に短くても、面している二つの固定子鉄心２１１に形成される爪磁極２１１Ｂの磁束方向を略同じに揃え、磁束漏れを抑制することができる。そのため、モータ１を小型化することができる。 As a result, the motor 1 has the magnetic flux of the claw magnetic pole 211B formed on the two stator cores 211 facing each other even if the axial distance between the two stator units 21 of the same phase is relatively short. The directions can be aligned substantially the same, and magnetic flux leakage can be suppressed. Therefore, the motor 1 can be miniaturized.
　また、本実施形態では、軸方向に隣接する同じ相の二つの固定子ユニット２１は、互いの面している固定子鉄心２１１の間の軸方向の距離が、軸方向で隣接する異なる相の二つの固定子ユニット２１の面している固定子鉄心２１１の間の軸方向の距離より小さくてよい。 Further, in the present embodiment, the two stator units 21 having the same phase adjacent to each other in the axial direction have different phases in which the axial distances between the stator cores 211 facing each other are different in the axial direction. It may be smaller than the axial distance between the two stator units 21 facing the stator cores 211.
　これにより、同じ相の二つの固定子ユニット２１の間の磁束漏れを抑制しつつ、その間の距離を異なる相の二つの固定子ユニット２１の間の距離よりも相対的に短くして、具体的に、モータ１の軸方向の寸法を小型化することができる。 As a result, while suppressing magnetic flux leakage between two stator units 21 in the same phase, the distance between them is made relatively shorter than the distance between two stator units 21 in different phases. In addition, the axial dimension of the motor 1 can be reduced.
　尚、上述の如く、複数相分の固定子ユニット２１が３以上組み合わせられてもよい。この場合、３以上の同じ相の固定子ユニット２１のうちの少なくとも二つが軸方向で隣り合うように配置されてよい。また、軸方向で隣り合う同じ相の二つの固定子ユニット２１の組み合わせが３以上ある場合、その組み合わせのうちの少なくとも一組が上記の関係にあればよい。これにより、少なくともその組み合わせに関して、上記の作用・効果を奏する。 As described above, three or more stator units 21 for a plurality of phases may be combined. In this case, at least two of the three or more stator units 21 having the same phase may be arranged so as to be adjacent to each other in the axial direction. Further, when there are three or more combinations of two stator units 21 having the same phase adjacent to each other in the axial direction, at least one of the combinations may have the above relationship. As a result, the above-mentioned actions and effects are exhibited, at least with respect to the combination.
　また、本実施形態では、軸方向で隣接する同じ相の二つの固定子ユニット２１は、互いの面している固定子鉄心２１１の軸方向の距離が０であってよい。 Further, in the present embodiment, the axial distance between the stator cores 211 facing each other may be 0 between the two stator units 21 having the same phase adjacent to each other in the axial direction.
　これにより、モータ１を更に小型化することができる。 As a result, the motor 1 can be further miniaturized.
　尚、同じ相の二つの固定子ユニット２１の互いの面している固定子鉄心２１１の軸方向の距離は、軸方向で隣接する異なる相の二つの固定子ユニット２１の面している固定子鉄心２１１の間の軸方向の距離より小さい範囲で、０より大きくしてもよい。これにより、モータ１は、コギングトルクを抑制することができる。また、同じ相の二つの固定子ユニット２１の互いに面している二つの固定子鉄心２１１の間に相間部材２２と同様の部材が設けられてもよい。これにより、モータ１は、コギングトルクを更に抑制することができる。 The axial distance of the stator cores 211 of the two stator units 21 of the same phase facing each other is the facing stators of the two stator units 21 of different phases adjacent in the axial direction. It may be larger than 0 in a range smaller than the axial distance between the iron cores 211. As a result, the motor 1 can suppress the cogging torque. Further, a member similar to the interphase member 22 may be provided between the two stator cores 211 facing each other of the two stator units 21 having the same phase. As a result, the motor 1 can further suppress the cogging torque.
　また、本実施形態では、爪磁極２１１Ｂは、固定子鉄心２１１の軸方向の一端部（ヨーク部２１１Ａ）から回転子１０に向かって径方向に突出する爪磁極部２１１Ｂ１を有する。また、爪磁極２１１Ｂは、爪磁極部２１１Ｂ１の先端部から固定子鉄心２１１の軸方向の他端部（他方の固定子鉄心２１１のヨーク部２１１Ａ）に向かって軸方向に突出する爪磁極部２１１Ｂ２を有する。そして、軸方向で隣接する同じ相の二つの固定子ユニット２１は、互いの軸方向の両端部に位置する二つの固定子鉄心２１１に形成される爪磁極部２１１Ｂ２の先端部どうしが接触してよい。 Further, in the present embodiment, the claw magnetic pole 211B has a claw magnetic pole portion 211B1 protruding in the radial direction from one end portion (yoke portion 211A) in the axial direction of the stator core 211 toward the rotor 10. Further, the claw magnetic pole 211B 2 is a claw magnetic pole portion 211B2 that projects axially from the tip end portion of the claw magnetic pole portion 211B1 toward the other end portion in the axial direction of the stator core 211 (the yoke portion 211A of the other stator core 211). Has. Then, the two stator units 21 of the same phase adjacent to each other in the axial direction are in contact with each other at the tips of the claw magnetic pole portions 211B2 formed on the two stator cores 211 located at both ends in the axial direction of each other. Good.
　これにより、モータ１は、爪磁極２１１Ｂ（爪磁極部２１１Ｂ２）の磁極面を相対的に広く確保することができる。そのため、モータ１は、トルクを相対的に増加させ、その出力を向上させることができる。 As a result, the motor 1 can secure a relatively wide magnetic pole surface of the claw magnetic pole 211B (claw magnetic pole portion 211B2). Therefore, the motor 1 can relatively increase the torque and improve its output.
　また、本実施形態では、軸方向で隣接する同じ相の二つの固定子ユニット２１は、それぞれの巻線２１２の両端が内周部及び外周部に位置するように巻回される。そして、軸方向で隣接する同じ相の二つの固定子ユニット２１は、互いの巻線２１２の内周部の一端（内周端部）どうし、又は互いの巻線２１２の外周部の他端（外周端部）どうしが接続されてよい。 Further, in the present embodiment, the two stator units 21 having the same phase adjacent to each other in the axial direction are wound so that both ends of the respective windings 212 are located at the inner peripheral portion and the outer peripheral portion. Then, the two stator units 21 of the same phase adjacent to each other in the axial direction are connected to each other at one end (inner peripheral end) of the inner peripheral portion of each winding 212, or the other end of the outer peripheral portion of each winding 212 ( Outer peripheral ends) may be connected to each other.
　これにより、モータ１は、同じ相の二つの巻線２１２を接続する接続部２１３，２１４の長さを相対的に短くし、且つ、接続部２１３，２１４が二つの巻線２１２Ａ，２１２Ｂの内周部と外周部との間を跨がないようにすることができる。そのため、例えば、設計者は、同じ相の二つの固定子ユニット２１に対応する同じ相の二つの巻線２１２を接続する接続部２１３，２１４の設計を比較的容易に行うことができる。 As a result, the motor 1 relatively shortens the lengths of the connecting portions 213 and 214 connecting the two windings 212 of the same phase, and the connecting portions 213 and 214 are among the two windings 212A and 212B. It is possible not to straddle between the peripheral portion and the outer peripheral portion. Therefore, for example, the designer can relatively easily design the connecting portions 213 and 214 that connect the two windings 212 of the same phase corresponding to the two stator units 21 of the same phase.
　［変形・変更］
　以上、実施形態を説明したが、特許請求の範囲の趣旨及び範囲から逸脱することなく、形態や詳細の多様な変形や変更が可能なことが理解されるであろう。 [Transform / Change]
Although the embodiments have been described above, it will be understood that various modifications and changes of the forms and details are possible without departing from the purpose and scope of the claims.
　例えば、上述の実施形態の構成は、クローポール型の固定子の径方向の内側に回転子が回転可能に配置されるインナロータ型のクローポールモータに適用されてもよい。この場合、固定子鉄心の内周側から径方向の内側に向かって突出する爪磁極が形成される。 For example, the configuration of the above-described embodiment may be applied to an inner rotor type claw pole motor in which the rotor is rotatably arranged inside the claw pole type stator in the radial direction. In this case, a claw magnetic pole is formed that protrudes inward in the radial direction from the inner peripheral side of the stator core.
　また、上述の実施形態及び変形例の構成は、例えば、オルタネータ等のクローポール発電機（回転電機の一例）に適用されてもよいし、モータ（電動機）の機能及び発電機の機能の双方を有するクローポール型のモータジェネレータ（回転電機の一例）に適用されてもよい。 Further, the configurations of the above-described embodiments and modifications may be applied to, for example, a claw pole generator (an example of a rotary electric machine) such as an alternator, or both the function of the motor (electric motor) and the function of the generator. It may be applied to a claw pole type motor generator (an example of a rotary electric machine) having a claw pole.
　最後に、本願は、２０１９年９月３０日に出願した日本国特許出願２０１９－１８０９９８号に基づく優先権を主張するものであり、日本国特許出願の全内容を本願に参照により援用する。 Finally, the present application claims priority based on Japanese Patent Application No. 2019-180998 filed on September 30, 2019, and the entire contents of the Japanese patent application are incorporated herein by reference.
　１　クローポールモータ（回転電機）
　１０　回転子
　１１　回転子鉄心
　１２　永久磁石
　１３　回転軸部材
　２０　固定子
　２１　固定子ユニット
　２１Ａ～２１Ｆ　固定子ユニット
　２２　相間部材
　２２Ａ　ＵＶ相間部材
　２２Ｂ　ＶＷ相間部材
　２３　端部部材
　２４　挿通部材
　３０　固定部材
　２１１　固定子鉄心（鉄心）
　２１１Ａ　ヨーク部
　２１１Ｂ　爪磁極
　２１１Ｂ１　爪磁極部（第１の爪磁極部）
　２１１Ｂ２　爪磁極部（第２の爪磁極部） 1 Claw pole motor (rotary machine)
10 Rotor 11 Rotor Iron core 12 Permanent magnet 13 Rotating shaft member 20 Stator 21 Stator unit 21A-21F Stator unit 22 Interphase member 22A UV interphase member 22B VW interphase member 23 End member 24 Insertion member 30 Fixing member 211 Fixed Stator core (iron core)
211A Yoke part 211B Claw magnetic pole 211B1 Claw magnetic pole part (first claw magnetic pole part)
211B2 Claw magnetic pole (second claw magnetic pole)

Claims (6)

  1. 　クローポール型の複数の固定子ユニットが軸方向に積層される固定子を備える、複数相の回転電機であって、
    　前記固定子ユニットは、環状に巻回される巻線と、前記巻線の周囲を包囲するように設けられる鉄心と、前記鉄心の軸方向の両端部のそれぞれに周方向で交互に並ぶように複数形成され、前記鉄心の軸方向の両端部のそれぞれから回転子に向かって径方向に突出する爪磁極とを有し、
    　前記複数の固定子ユニットに含まれる、軸方向に隣接する同じ相の二つの固定子ユニットの組み合わせのうちの少なくとも一組は、互いの前記爪磁極が略鏡像の関係で配置され、且つ、互いの前記巻線が所定の外部端子から見て逆向きに巻かれている、
    　回転電機。     A multi-phase rotary electric machine having a stator in which a plurality of claw pole type stator units are stacked in the axial direction.
    The stator unit is arranged alternately in the circumferential direction with a winding wound in an annular shape, an iron core provided so as to surround the winding, and both ends of the iron core in the axial direction. It has a plurality of claw magnetic poles that are formed and protrude in the radial direction from each of both ends in the axial direction of the iron core toward the rotor.
    At least one set of the combination of two stator units having the same phase adjacent to each other in the plurality of stator units is such that the claw magnetic poles of each other are arranged in a substantially mirror image relationship and each other. The winding is wound in the opposite direction when viewed from a predetermined external terminal.
    Rotating electric machine.
  2. 　クローポール型の複数の固定子ユニットが軸方向に積層される固定子を備える、複数相の回転電機であって、
    　前記固定子ユニットは、環状に巻回される巻線と、前記巻線の周囲を包囲するように設けられる鉄心と、前記鉄心の軸方向の両端部のそれぞれに周方向で交互に並ぶように複数形成され、前記鉄心の軸方向の両端部のそれぞれから回転子に向かって径方向に突出する爪磁極とを有し、
    　前記複数の固定子ユニットのうちの軸方向で隣接する同じ相の二つの固定子ユニットの組み合わせのうちの少なくとも一組は、互いの前記鉄心の面している軸方向の端部に略鏡像の関係で配置される爪磁極の電機子電流による磁極の極性が同じである、
    　回転電機。     A multi-phase rotary electric machine having a stator in which a plurality of claw pole type stator units are stacked in the axial direction.
    The stator unit is arranged alternately in the circumferential direction with a winding wound in an annular shape, an iron core provided so as to surround the winding, and both ends of the iron core in the axial direction. It has a plurality of claw magnetic poles that are formed and protrude in the radial direction from each of both ends in the axial direction of the iron core toward the rotor.
    At least one of the combinations of two stator units of the same phase adjacent in the axial direction among the plurality of stator units is a substantially mirror image at the axial ends of the iron cores facing each other. The polarity of the magnetic poles due to the armature current of the claw magnetic poles arranged in relation is the same,
    Rotating electric machine.
  3. 　互いの前記鉄心の間の軸方向の距離が、前記複数の固定子ユニットのうちの互いに軸方向で隣接する異なる相の二つの固定子ユニットの前記鉄心の間の軸方向の距離より小さい、
    　請求項１又は２に記載の回転電機。     The axial distance between the cores of each other is smaller than the axial distance between the cores of two stator units of different phases that are axially adjacent to each other among the plurality of stator units.
    The rotary electric machine according to claim 1 or 2.
  4. 　前記少なくとも一組は、互いの鉄心間の軸方向の距離が０である、
    　請求項１乃至３の何れか一項に記載の回転電機。     The at least one set has an axial distance between the iron cores of 0.
    The rotary electric machine according to any one of claims 1 to 3.
  5. 　前記爪磁極は、前記鉄心の軸方向の一端部から前記回転子に向かって径方向に突出する第１の爪磁極部と、前記第１の爪磁極部の先端部から前記鉄心の軸方向の他端部に向かって軸方向に突出する第２の爪磁極部とを有し、
    　前記少なくとも一組は、互いの前記第２の爪磁極部の先端部どうしが接触している、
    　請求項１乃至４の何れか一項に記載の回転電機。     The claw magnetic poles are a first claw magnetic pole portion that protrudes radially toward the rotor from one end portion in the axial direction of the iron core, and an axial direction of the iron core from the tip end portion of the first claw magnetic pole portion. It has a second claw magnetic pole portion that projects axially toward the other end, and has a second claw magnetic pole portion.
    The at least one set is in contact with each other at the tips of the second claw magnetic poles.
    The rotary electric machine according to any one of claims 1 to 4.
  6. 　前記少なくとも一組は、それぞれの前記巻線の両端が内周部及び外周部に位置するように巻回され、互いの前記巻線の前記内周部の一端どうし、又は互いの前記巻線の前記外周部の他端どうしが接続されている、
    　請求項１乃至５の何れか一項に記載の回転電機。     The at least one set is wound so that both ends of the respective windings are located at the inner peripheral portion and the outer peripheral portion, and one end of the inner peripheral portion of each other of the windings, or each other of the windings. The other ends of the outer peripheral portion are connected to each other,
    The rotary electric machine according to any one of claims 1 to 5.
PCT/JP2020/034859 2019-09-30 2020-09-15 Rotary electric machine WO2021065462A1 (en)

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Publication number Priority date Publication date Assignee Title
JPH08280093A (en) * 1995-04-06 1996-10-22 Alpine Electron Inc Magnetic driving device and manufacture therefor
JP2013123361A (en) * 2011-11-10 2013-06-20 Asmo Co Ltd Rotor and motor
JP2014161198A (en) * 2012-07-31 2014-09-04 Asmo Co Ltd Motor, stay core for motor, and manufacturing method for rotor core
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US20180102682A1 (en) * 2015-06-29 2018-04-12 Sn Innovation Co., Ltd. Outer-rotor-type switched reluctance motor

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