WO2023145747A1 - Stator and motor - Google Patents

Stator and motor Download PDF

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Publication number
WO2023145747A1
WO2023145747A1 PCT/JP2023/002167 JP2023002167W WO2023145747A1 WO 2023145747 A1 WO2023145747 A1 WO 2023145747A1 JP 2023002167 W JP2023002167 W JP 2023002167W WO 2023145747 A1 WO2023145747 A1 WO 2023145747A1
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WO
WIPO (PCT)
Prior art keywords
insulator
teeth
fitting portion
stator
fitting
Prior art date
Application number
PCT/JP2023/002167
Other languages
French (fr)
Japanese (ja)
Inventor
和哉 片山
慎一 堤
彰彦 渡辺
Original Assignee
パナソニックＩｐマネジメント株式会社
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
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Application filed by パナソニックＩｐマネジメント株式会社 filed Critical パナソニックＩｐマネジメント株式会社
Publication of WO2023145747A1 publication Critical patent/WO2023145747A1/en

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/32—Windings characterised by the shape, form or construction of the insulation
    • H02K3/34—Windings characterised by the shape, form or construction of the insulation between conductors or between conductor and core, e.g. slot insulation

Definitions

  • the present disclosure generally relates to stators and motors, and more particularly relates to stators including teeth and insulators covering at least a portion of the teeth, and motors including the stators.
  • insulating paper is arranged on the slot walls of the teeth of the stator core constituting the motor, and coils are formed around the teeth via the insulating paper.
  • recesses and protrusions are formed on at least one of the surface of the insulating paper on the side of the slot wall surface and the surface on the side of the coil.
  • the concave portion serves as a cooling medium flow path.
  • an electrically insulating insulator may be provided around the teeth.
  • An object of the present disclosure is to provide a stator and motor that can reduce the possibility of insulator damage.
  • a stator includes a plurality of annularly arranged tooth blocks.
  • Each of the plurality of tooth blocks has teeth, insulators, and windings.
  • the teeth extend radially.
  • the insulator has electrical insulation.
  • the insulator covers the teeth.
  • the winding is wound around the insulator.
  • the insulator includes a first surface facing the teeth.
  • the tooth includes a second surface facing the insulator.
  • the insulator has a first fitting portion on the first opposing surface.
  • the tooth has a second fitting portion that fits with the first fitting portion on the second facing surface.
  • a motor includes the stator and the rotor.
  • the rotor has a rotor shaft. The rotor rotates with respect to the stator.
  • the present disclosure has the advantage of reducing the possibility of insulator damage.
  • FIG. 1 is a front cross-sectional view (described later) of a main part of a stator according to Embodiment 1.
  • FIG. FIG. 2 is a front view of a motor provided with the same stator.
  • FIG. 3 is a perspective view of the insulator of the stator as seen from above.
  • FIG. 4 is a perspective view of the insulator of the stator as seen from below.
  • FIG. 5 is a front cross-sectional view of a main part of a stator according to a first modified example.
  • FIG. 6 is a front cross-sectional view of essential parts of a stator according to a second modification.
  • FIG. 7 is a perspective view of the insulator of the stator according to Embodiment 2 as seen from below.
  • FIG. 1 is a front cross-sectional view of a main part of a stator 3 according to Embodiment 1.
  • FIG. FIG. 2 is a front view of the motor 1 including the stator 3 according to Embodiment 1.
  • FIG. The front cross-sectional view is a cross-sectional view when the motor is cut along a plane perpendicular to the axial direction D3.
  • the rotor shaft 21 has a cylindrical shape.
  • “Axial direction” is a direction parallel to the rotation axis of the rotor shaft 21 .
  • the “radial direction” is the direction from the center of the rotor shaft 21 toward the side surface of the rotor shaft 21 .
  • “Circumferential” is the direction of rotation of the rotor shaft. The axial, radial and circumferential directions are orthogonal to each other.
  • the stator 3 of this embodiment includes a plurality of tooth blocks TB1 arranged in a ring.
  • Each of the plurality of tooth blocks TB1 has teeth 4 , insulators 5 and windings 6 .
  • illustration of the insulator 5, the winding 6, and the insulating sheet 7, which will be described later, is omitted.
  • the teeth 4 extend in the radial direction D2.
  • the insulator 5 has electrical insulation.
  • the insulator 5 covers at least part of the teeth 4 .
  • Winding 6 is wound around insulator 5 .
  • Insulator 5 includes a first opposing surface 5 e facing teeth 4 .
  • Teeth 4 include second opposing surfaces 4 e facing insulator 5 .
  • the insulator 5 has a first fitting portion G1 on the first opposing surface 5e.
  • the tooth 4 has a second fitting portion P1 that fits with the first fitting portion G1 on the second opposing surface 4e.
  • the contact area between the insulator 5 and the teeth 4 is larger than when the first fitting portion G1 and the second fitting portion P1 are not provided. Therefore, when pressure is applied to the insulator 5, the pressure can be relieved, and the possibility of damage to the insulator 5 can be reduced. Therefore, deterioration of the electrical insulation performance of the insulator 5 due to damage to the insulator 5 can be suppressed.
  • Damage to the insulator 5 is, for example, cracking, chipping, breakage, and the like. Further, by increasing the contact area between the insulator 5 and the teeth 4, the possibility of occurrence of an abnormality in the stage prior to the damage of the insulator 5 can be reduced.
  • An abnormality that precedes damage to the insulator 5 is, for example, whitening of the insulator 5 .
  • Whitening of the insulator 5 is a phenomenon in which the color of the surface of the insulator 5 becomes white. Whitening of the insulator 5 occurs when a local stress is applied to the insulator 5 and the structure of the material forming the insulator 5 is deformed.
  • a motor 1 includes a stator 3 and a rotor 2 .
  • the rotor 2 has a rotor shaft 21 .
  • Rotor 2 rotates with respect to stator 3 .
  • the motor 1 may further include a motor housing. The motor housing accommodates the stator 3 and the rotor 2 .
  • Rotor 2 has, for example, a rotor core 20, a rotor shaft 21, and a plurality of (six in FIG. 2) permanent magnets 22, as shown in FIG.
  • the rotor core 20 is made of a magnetic material.
  • the rotor core 20 has a cylindrical shape.
  • the rotor core 20 has a first through hole at its center through which the rotor shaft 21 is passed. Further, the rotor core 20 has a plurality of second through holes around the first through holes, into which a plurality of permanent magnets 22 are inserted.
  • the plurality of permanent magnets 22 are arranged radially around the rotor shaft 21 when viewed from the axial direction of the rotor shaft 21, for example.
  • the rotor 2 rotates relative to the stator 3 due to the electromagnetic interaction between the magnetic flux generated from the windings 6 (coils) of the stator 3 and the plurality of permanent magnets 22 .
  • the circumferential direction D1 referred to in this embodiment matches the rotation direction of the rotor 2 .
  • the radial direction D ⁇ b>2 referred to in this embodiment coincides with the radial direction of the rotor shaft 21 .
  • the axial direction D ⁇ b>3 referred to in this embodiment matches the axial direction of the rotor shaft 21 .
  • the circumferential direction D1, the radial direction D2, and the axial direction D3 are orthogonal to each other.
  • one direction of the axial direction D3 is defined as upward, and the other direction is defined as downward.
  • the term “outer side” means the side farther from the center of the motor 1 along the radial direction D2 with respect to a certain object
  • the term “inner side” means the side farther from the center of the motor 1 along the radial direction D2 with respect to the same object. means the side closer to the center of the motor 1 along.
  • a rotor shaft 21 is arranged at the center of the motor 1 when viewed from the axial direction D3.
  • the stator 3 includes a plurality of (nine in FIG. 2) tooth blocks TB1.
  • a plurality of tooth blocks TB1 have the same configuration.
  • Each of the plurality of tooth blocks TB1 has teeth 4, insulators 5, windings 6, and insulating sheets 7. The surfaces of teeth 4 are covered with insulators 5 , and windings 6 are wound around teeth 4 from above insulators 5 .
  • the stator 3 is formed by coupling the plurality of tooth blocks TB1 to each other.
  • a plurality of tooth blocks TB1 are annularly coupled to surround the rotor 2 .
  • the teeth 4 are made of a magnetic material.
  • the tooth 4 includes a trunk portion 41 , two outer protrusions 42 and two inner protrusions 43 .
  • the tooth 4 has an outer peripheral surface 4a and an inner peripheral surface 4b along the circumferential direction D1. That is, the outer peripheral surface 4 a is the outer surface of the tooth 4 , and the inner peripheral surface 4 b is the inner surface of the tooth 4 .
  • the tooth 4 has an outer side surface 4c and an inner side surface 4d between the outer peripheral surface 4a and the inner peripheral surface 4b. In two adjacent teeth 4, the outer side surfaces 4c are in contact with each other, and a space is formed between the inner side surfaces 4d.
  • drum 41 is a rectangular parallelepiped shape, for example.
  • the trunk portion 41 extends in the radial direction D2.
  • the two outer protrusions 42 include the outer peripheral surface 4a and protrude from the side portion of the body portion 41 along the circumferential direction D1. That is, the two outer protrusions 42 are formed in the vicinity of the outer end of the trunk portion 41 .
  • the two outer protrusions 42 protrude in opposite directions.
  • the two inner protrusions 43 include the inner peripheral surface 4b and protrude from the side portion of the body portion 41 along the circumferential direction D1.
  • the two inner protrusions 43 protrude in opposite directions. That is, the two inner protrusions 43 are formed in the vicinity of the body portion 41 including the inner end.
  • each of the outer protrusions 42 is provided with projections and recesses, and is coupled to each other by fitting the projections and recesses. In this manner, two tooth blocks TB1 adjacent to each other are coupled to each other at the outer protrusions 42. As shown in FIG.
  • a slot ST1 is formed between two teeth 4 adjacent to each other.
  • Slot ST1 is hollow.
  • a portion of the insulator 5, a portion of the winding 6, and the insulating sheet 7 are arranged in the slot ST1.
  • the slot ST1 is surrounded by the body portion 41, the outer protrusion 42, and the inner protrusion 43 of each of the two teeth 4. As shown in FIG.
  • the tooth 4 has a plurality of second fitting portions P1 on the face 4e (second face 4e) facing the insulator 5 . More specifically, the tooth 4 has a plurality of second fitting portions P1 on each surface (inner surface 4d) facing the slot ST1. That is, the trunk portion 41, the two outer protrusions 42, and the two inner protrusions 43 are each provided with a plurality of second fitting portions P1.
  • the second facing surface 4e forms part of the inner surface 4d.
  • the facing surface 4 e facing the insulator 5 may not directly face the insulator 5 , and another member may be interposed between the facing surface 4 e and the insulator 5 .
  • another member may be interposed between the facing surface 4 e and the insulator 5 .
  • an insulating sheet 7 may be interposed between the facing surface 4e and the insulator 5, as shown in FIG.
  • Each second fitting portion P1 is a convex portion.
  • the second fitting portion P1 extends in the axial direction D3. That is, the second fitting portion P1 is formed in a convex shape extending in the axial direction D3. In a cross section orthogonal to the axial direction D3, the cross-sectional shape of the second fitting portion P1 is semicircular.
  • the second fitting portion P1 is formed in a semi-cylindrical shape as a whole.
  • the second fitting portion P1 is formed, for example, across both ends of the tooth 4 in the axial direction D3.
  • the plurality of second fitting portions P1 are arranged at regular intervals in a direction intersecting the axial direction D3.
  • the second facing surface 4e forms part of the inner side surface 4d, but the second facing surface 4e may form the entire inner side surface 4d.
  • the insulator 5 shown in FIG. 1 has electrical insulation.
  • the insulator 5 is made of synthetic resin, for example.
  • the insulator 5 is a member with a fixed shape, such as a molded product.
  • the insulator 5 covers at least part of the teeth 4 .
  • part of the insulator 5 is inserted into the slot ST1. Thereby, the insulator 5 is provided so as to surround the body portion 41 of the tooth 4 .
  • FIG. 3 is a perspective view of the insulator 5 of the stator 3 according to Embodiment 1 as viewed from above.
  • FIG. 4 is a perspective view of the insulator 5 of the stator 3 according to Embodiment 1 as seen from below.
  • the insulator 5 has a winding portion 51 , a first flange portion 52 and a second flange portion 53 .
  • the shape of the winding portion 51 is a rectangular parallelepiped. Both end surfaces of the winding portion 51 in the radial direction D2 are open. One end surface (lower surface) of the winding portion 51 in the axial direction D3 is open. The winding portion 51 covers the body portion 41 of the tooth 4 .
  • the winding portion 51 has a first side portion 511 , a second side portion 512 and a top portion 513 .
  • the top portion 513 covers the trunk portion 41 from the axial direction D3. That is, the top portion 513 covers the upper surface of the trunk portion 41 .
  • the first side portion 511 and the second side portion 512 face each other in the circumferential direction D1.
  • the first side portion 511 and the second side portion 512 protrude from the top portion 513 in the axial direction D3.
  • the first side portion 511 and the second side portion 512 cover the surface of the body portion 41 along the radial direction D2 and the axial direction D3.
  • the lengths of the first side portion 511 and the second side portion 512 in the axial direction D3 are, for example, equal to the thickness of the teeth 4 in the axial direction D3.
  • the first collar portion 52 is connected to the outer edge of the winding portion 51 .
  • the first collar portion 52 has a side piece 521 , a side piece 522 and a main piece 523 .
  • the main piece 523 covers a region of the tooth 4 including at least a portion of the two outer protrusions 42 from the axial direction D3. That is, the main piece 523 partially covers the top surface of the tooth 4 .
  • the side piece 521 and the side piece 522 protrude from the main piece 523 in the axial direction D3.
  • the side piece 521 protrudes from the first side portion 511 in one direction in the circumferential direction D1, and the side piece 522 protrudes from the second side portion 512 in the other direction in the circumferential direction D1.
  • the side piece 521 covers the inner surface of one outer protrusion 42 .
  • the side piece 522 covers the inner surface of the other outer protrusion 42 .
  • the second collar portion 53 is connected to the inner end of the winding portion 51 .
  • the second collar portion 53 has a side piece 531 , a side piece 532 and a main piece 533 .
  • the main piece 533 covers a region including at least a portion of the two inner projections 43 of the teeth 4 from the axial direction D3. That is, the main piece 533 partially covers the upper surface of the tooth 4 .
  • the side piece 531 and the side piece 532 protrude from the main piece 533 in the axial direction D3.
  • the side piece 531 protrudes from the first side portion 511 in one direction in the circumferential direction D1, and the side piece 532 protrudes from the second side portion 512 in the other direction in the circumferential direction D1.
  • the side piece 531 covers the outer surface of one inner protrusion 43 .
  • the side piece 532 covers the outer surface of the other inner protrusion 43 .
  • the first side portion 511, the second side portion 512, the side piece 521, the side piece 522, the side piece 531, and the side piece 532 of the insulator 5 are arranged in the slot ST1, and face the tooth 4. 5e (first opposing surface 5e).
  • the surfaces 5 e facing the teeth 4 may not directly face the teeth 4 , and another member may be interposed between the surfaces 5 e and the teeth 4 .
  • an insulating sheet 7 may be interposed between the facing surface 5e and the teeth 4.
  • FIG. 1 an insulating sheet 7 may be interposed between the facing surface 5e and the teeth 4.
  • the first side portion 511, the second side portion 512, the side piece 521, the side piece 522, the side piece 531, and the side piece 532 are each formed in a plate shape, for example.
  • the first side portion 511, the second side portion 512, the side piece 521, the side piece 522, the side piece 531, and the side piece 532 each have a plurality of first fitting portions G1 on the surface 5e facing the tooth 4. have.
  • the first fitting portion G1 is a recess.
  • the first fitting portion G1 extends in the axial direction D3. That is, the first fitting portion G1 is formed in a groove shape extending in the axial direction D3. In a cross section orthogonal to the axial direction D3, the cross-sectional shape of the first fitting portion G1 is semicircular.
  • the shape of the first fitting portion G1 is a shape along the second fitting portion P1.
  • the first side portion 511 and the second side portion 512 have a plurality of first fitting portions G1 on the surface 5e facing the body portion 41, and the side piece 521 and the side piece 522 face the outer projecting portion 42.
  • the surface 5 e has a plurality of first fitting portions G ⁇ b>1
  • the side piece 531 and the side piece 532 have a plurality of first fitting portions G ⁇ b>1 on the surface 5 e facing the inner protrusion 43 .
  • the length of each first fitting portion G1 in the axial direction D3 is, for example, equal to the length of the first side portion 511 and the second side portion 512 in the axial direction D3.
  • the plurality of first fitting portions G1 extend in a direction intersecting the axial direction D3. are evenly spaced.
  • the cross-sectional shape of the first fitting portion G1 is semicircular. More specifically, the shape of the first fitting portion G1 in a cross section orthogonal to the axial direction D3 is semicircular.
  • the depth of the first fitting portion G1 is preferably about 1/2 of the thickness of the peripheral portion of the first fitting portion G1. Thereby, the contact area between the insulator 5 and the teeth 4 can be ensured while ensuring the strength of the insulator 5 . It is preferable that the depth of the first fitting portion G1 is, for example, greater than 1/3 of the thickness of the peripheral portion of the first fitting portion G1. Also, the depth of the first fitting portion G1 is preferably smaller than, for example, 2/3 of the thickness of the peripheral portion of the first fitting portion G1.
  • the first fitting part G1 has the same shape as the second fitting part P1 and is slightly larger than the second fitting part P1.
  • the first fitting portion G1 is fitted to the second fitting portion P1. That is, the second fitting portion P1 (projection) is inserted into the first fitting portion G1 (recess).
  • An insulating sheet 7 is sandwiched between the first fitting portion G1 and the second fitting portion P1 (see FIG. 1).
  • the plurality of first fitting portions G1 and the plurality of second fitting portions P1 are in one-to-one correspondence, and the corresponding first fitting portions G1 and second fitting portions P1 are mated.
  • the winding 6 includes, for example, a linear conductor made of copper or a copper alloy, and an insulator covering the conductor.
  • the windings 6 are wound around the body portions 41 of the teeth 4 .
  • An insulator 5 is interposed between the winding 6 and the teeth 4 . That is, the winding 6 is wound around the trunk portion 41 via the insulator 5 .
  • the insulating sheet 7 has electrical insulation.
  • the insulating sheet 7 is, for example, insulating paper or a resin sheet.
  • the insulating sheet 7 deforms more easily than the insulator 5 .
  • the insulating sheet 7 is arranged in the slot ST1. A portion of the insulating sheet 7 is sandwiched between the teeth 4 and the insulator 5 .
  • the insulating sheet 7 includes a first portion 71, a second portion 8 and a third portion 9.
  • the insulating sheet 7 is manufactured in a planar shape, for example, and by folding the insulating sheet 7, the first portion 71, the second portion 8, and the third portion 9 are distinguished from each other along the fold lines.
  • the thickness direction of each portion of the insulating sheet 7 intersects with the axial direction D3.
  • the first portion 71 is sandwiched between the tooth 4 and the insulator 5 . More specifically, first portion 71 is arranged between tooth 4 and winding 6 . Furthermore, the insulator 5 is arranged between the winding 6 and the first portion 71 .
  • the first portion 71 has an intermediate portion 711 , an outer portion 712 and an inner portion 713 .
  • the outer end of the intermediate portion 711 is connected to the outer portion 712
  • the inner end of the intermediate portion 711 is connected to the inner portion 713 .
  • the intermediate portion 711 is in contact with the trunk portion 41 of the tooth 4 .
  • the outer portion 712 is in contact with the outer protrusion 42 of the tooth 4 .
  • the inner portion 713 is in contact with the inner protrusion 43 of the tooth 4 .
  • the second portion 8 is connected to the outer portion 712. That is, the second portion 8 is connected to the first portion 71 at a position apart from the trunk portion 41 of the tooth 4 .
  • the second part 8 covers part of the winding 6 . More specifically, the second portion 8 covers a region of the winding 6 that is distant from the body portion 41 and close to the outer protrusion 42 .
  • Winding 6 is arranged between second portion 8 and intermediate portion 711 . That is, the winding 6 is arranged between the second portion 8 and the body portion 41 .
  • the third portion 9 is connected to the inner portion 713. That is, the third portion 9 is connected to the first portion 71 at a position apart from the body portion 41 of the tooth 4 in the radial direction D2.
  • a third portion 9 covers part of the winding 6 . More specifically, the third portion 9 covers a region of the winding 6 that is distant from the body portion 41 and close to the inner protrusion 43 .
  • Winding 6 is arranged between third portion 9 and intermediate portion 711 . That is, the winding 6 is arranged between the third portion 9 and the body portion 41 .
  • a second portion 8 and a third portion 9 of the insulating sheet 7 of each tooth block TB1 are arranged between two windings 6 of two tooth blocks TB1 adjacent to each other. This increases the electrical insulation between the two windings 6 compared to the case where neither of the two tooth blocks TB1 has the insulating sheet 7 .
  • Each of the plurality of tooth blocks TB1 is in contact with adjacent tooth blocks TB1 in the circumferential direction D1 in the region where the windings 6 are provided. More specifically, each of the plurality of tooth blocks TB1 is in contact with adjacent tooth blocks TB1 in the circumferential direction D1 within the slot ST1. More specifically, two tooth blocks TB1 adjacent to each other in the circumferential direction D1 are in contact with each other at the second portion 8 and the third portion 9 of the insulating sheet 7 .
  • the insulator 5 and the teeth 4 of the present embodiment are fitted at the first fitting portion G1 and the second fitting portion P1, and when the first fitting portion G1 and the second fitting portion P1 are not provided, , the contact area between the insulator 5 and the teeth 4 is large. Therefore, the pressure applied to the insulator 5 is easily distributed to the teeth 4 , thereby reducing the pressure acting on the insulator 5 . As a result, it is possible to reduce the possibility of damage to the insulator 5 and the possibility of occurrence of an abnormality in the pre-stage of damage.
  • the slot ST1 is provided with a molding member M1 for molding the windings 6 . That is, each of the plurality of tooth blocks TB1 preferably further has a molding member M1 for molding the windings 6. As shown in FIG. Mold member M1 has thermal conductivity. The molding member M1 is formed, for example, by solidifying a molding material such as a liquid synthetic resin. In FIG. 1, the mold member M1 is illustrated with dots. As shown in FIG. 1, the molding member M1 is provided at least between the winding 6 and the second portion 8 of the insulating sheet 7 and between the winding 6 and the third portion 9 of the insulating sheet 7. preferably.
  • FIG. 5 is a front cross-sectional view of main parts of a stator 3A according to a first modified example. Configurations similar to those of the first embodiment are denoted by the same reference numerals, and descriptions thereof are omitted.
  • the stator 3A of this first modified example differs from the above-described first embodiment in the shape of each first fitting portion G1 of the insulator 5 . That is, in the first modified example, the cross-sectional shape of the first fitting portion G1 is triangular. More specifically, the shape of the first fitting portion G1 in a cross section orthogonal to the axial direction D3 is triangular. The first fitting portion G1 extends in the axial direction D3.
  • the stator 3A of this first modified example differs from the above-described first embodiment in the shape of the second fitting portions P1 of the teeth 4 .
  • the shape of the second fitting portion P1 is a shape along the first fitting portion G1. That is, in the first modified example, the cross-sectional shape of the second fitting portion P1 is triangular. More specifically, the shape of the second fitting portion P1 in a cross section perpendicular to the axial direction D3 is triangular.
  • the second fitting portion P1 extends in the axial direction D3.
  • the insulator 5 can relieve the pressure, thereby reducing the possibility of damage.
  • FIG. 6 is a front cross-sectional view of main parts of a stator 3B according to a second modification. Configurations similar to those of the first embodiment are denoted by the same reference numerals, and descriptions thereof are omitted.
  • the stator 3B of this second modified example differs from the above-described first embodiment in the shape of each first fitting portion G1 of the insulator 5 . That is, in the second modified example, the cross-sectional shape of the first fitting portion G1 is trapezoidal. More specifically, the shape of the first fitting portion G1 in a cross section orthogonal to the axial direction D3 is trapezoidal. The first fitting portion G1 extends in the axial direction D3.
  • the stator 3B of this first modified example differs from the above-described first embodiment in the shape of the second fitting portions P1 of the teeth 4 .
  • the shape of the second fitting portion P1 is a shape along the first fitting portion G1. That is, in the first modified example, the cross-sectional shape of the second fitting portion P1 is trapezoidal. More specifically, the shape of the second fitting portion P1 in a cross section orthogonal to the axial direction D3 is trapezoidal.
  • the second fitting portion P1 extends in the axial direction D3.
  • the insulator 5 can relieve the pressure, thereby reducing the possibility of damage.
  • the first fitting portions G1 may not be provided on all of the faces 5e facing the teeth 4. That is, the first fitting portion G1 is configured by one or more of the first side portion 511, the second side portion 512, the side piece 521, the side piece 522, the side piece 531, and the side piece 532 of the insulator 5. It is sufficient if it is provided.
  • the first fitting portion G1 is formed on the surface 5e facing the tooth 4. It does not have to be provided throughout.
  • the first fitting portion G1 may be provided only in a part of the surface 5e facing the tooth 4 in the first side portion 511.
  • the first fitting portion G1 may be provided only in a part of the surface 5e facing the tooth 4 in the second side portion 512. As shown in FIG.
  • the first fitting portion G1 is provided at least in a region of the insulator 5 where damage such as cracks is likely to occur.
  • the first fitting portion G1 is preferably provided at least in a region of the first side portion 511 adjacent to the side piece 521 . It is also preferable that the first fitting portion G1 is provided at least in a region of the first side portion 511 adjacent to the side piece 531 . It is also preferable that the first fitting portion G1 is provided at least in a region of the side piece 521 adjacent to the first side portion 511 . It is also preferable that the first fitting portion G1 is provided at least in a region of the side piece 531 adjacent to the first side portion 511 .
  • the first fitting portion G1 be provided at least in a region of the second side portion 512 adjacent to the side piece 522 . It is also preferable that the first fitting portion G1 is provided at least in a region of the second side portion 512 adjacent to the side piece 532 . It is also preferable that the first fitting portion G1 is provided at least in a region of the side piece 522 adjacent to the second side portion 512 . It is also preferable that the first fitting portion G1 is provided at least in a region of the side piece 532 adjacent to the second side portion 512 .
  • the second fitting portion P1 may be provided in a region facing the first fitting portion G1.
  • the second fitting portion P1 may be provided in one or more of the trunk portion 41, the two outer protrusions 42, and the two inner protrusions 43.
  • the number of first fitting portions G1 is not limited to a plurality, as long as the insulator 5 is provided with one or more first fitting portions G1.
  • the number of second fitting portions P1 is not limited to a plurality, and the teeth 4 may be provided with one or more second fitting portions P1.
  • Each of the plurality of first fitting portions G1 may be a projection, and each of the plurality of second fitting portions P1 may be a recess.
  • each of the plurality of first fitting portions G1 and the plurality of second fitting portions P1 may be a combination of a convex portion and a concave portion.
  • a part of the molding member M1 may be provided in the concave portion of the first fitting portion G1 or the second fitting portion P1.
  • the shape of the insulator 5 is not limited to the shape shown in the first embodiment.
  • the insulator 5 includes a first member and a second member.
  • the second member may cover at least a portion of the teeth 4 from the other direction (bottom).
  • the insulator 5 may be integrally molded with the teeth 4 .
  • the insulating sheet 7 may be arranged between the winding 6 and the insulator 5.
  • the insulating sheet 7 is not an essential component.
  • the rotor 2 is arranged outside the stator 3 .
  • the stator 3 may be arranged outside the rotor 2 .
  • the motor 1 is not limited to the inner rotor type, and may be of the outer rotor type.
  • tooth blocks TB1 are individually manufactured and then combined.
  • a plurality of tooth blocks TB1 may be manufactured so as to be arranged in a C-shape as a whole, and then the tooth blocks TB1 at both ends may be joined together to manufacture a plurality of tooth blocks TB1 so as to be arranged in an annular shape. .
  • the number of tooth blocks TB1 is not limited to nine. Also, the shape of the teeth 4 can be changed as appropriate.
  • the mutually facing inner protrusions 43 of two tooth blocks TB1 adjacent to each other may be coupled to each other.
  • Two teeth blocks TB1 adjacent to each other need only be joined at least one of the outer projection 42 and the inner projection 43 .
  • a holding member for holding the plurality of tooth blocks TB1 may be provided on the inner peripheral surface or the outer peripheral surface of the plurality of tooth blocks TB1.
  • the tooth 4 does not have to have the two inner protrusions 43 .
  • the stator 3 may be provided in the generator.
  • FIG. 7 is a bottom perspective view of the insulator 5 of the stator 3 according to the second embodiment. Configurations similar to those of the first embodiment are denoted by the same reference numerals, and descriptions thereof are omitted. Note that the configuration (including modifications) of the first embodiment may be applied to the second embodiment as appropriate.
  • the stator 3 of this embodiment differs from the above-described first embodiment in terms of the arrangement and shape of each first fitting portion G1 of the insulator 5C. That is, in the present embodiment, the insulator 5C has a plurality of first fitting portions G1, and the plurality of first fitting portions G1 are scattered in plan view. Each first fitting portion G1 is a recess.
  • each of the first side portion 511, the second side portion 512, the side piece 521, the side piece 522, the side piece 531, and the side piece 532 is dotted with a plurality of first fitting portions G1.
  • Planar view WHEREIN The shape of each 1st fitting part G1 is circular.
  • the shape of the first fitting portion G1 in a cross section orthogonal to the axial direction D3 is, for example, semicircular.
  • the three-dimensional shape of each first fitting portion G1 is, for example, a hemispherical shape.
  • stator 3 of this embodiment differs from the first embodiment described above in terms of the arrangement and shape of the second fitting portions P1 of the teeth 4 .
  • the plurality of second fitting portions P1 are provided at positions facing the plurality of first fitting portions G1. That is, in the present embodiment, the tooth 4 has a plurality of second fitting portions P1, and the plurality of second fitting portions P1 are scattered in plan view.
  • the shape of each second fitting portion P1 is a shape along the first fitting portion G1.
  • Each second fitting portion P1 is a convex portion.
  • each 2nd fitting part P1 is circular.
  • the shape of the second fitting portion P1 in a cross section perpendicular to the axial direction D3 is, for example, semicircular.
  • the three-dimensional shape of each second fitting portion P1 is, for example, a hemispherical shape.
  • the insulator 5C can relieve the pressure, thereby reducing the possibility of damage.
  • Modification of Embodiment 2 Modifications of the second embodiment are listed below. The following modified examples may be implemented in combination as appropriate. Further, the following modifications may be realized by appropriately combining with each modification of the first embodiment.
  • the three-dimensional shape of the first fitting part G1 and the second fitting part P1 is not limited to a hemispherical shape, and may be, for example, a cone shape or a truncated cone shape.
  • the shape of the second fitting portion P1 in the cross section orthogonal to the axial direction D3 is not limited to a semicircular shape, and may be triangular or trapezoidal, for example.
  • Each of the plurality of first fitting portions G1 may be a projection, and each of the plurality of second fitting portions P1 may be a recess.
  • each of the plurality of first fitting portions G1 and the plurality of second fitting portions P1 may be a combination of a convex portion and a concave portion.
  • the first fitting portion G1 does not have to be provided on all of the surfaces 5e facing the teeth 4. That is, the first fitting portion G1 is configured by one or more of the first side portion 511, the second side portion 512, the side piece 521, the side piece 522, the side piece 531, and the side piece 532 of the insulator 5C. It is sufficient if it is provided.
  • the second fitting portion P1 may be provided in a region facing the first fitting portion G1.
  • the second fitting portion P1 may be provided in one or more of the trunk portion 41, the two outer protrusions 42, and the two inner protrusions 43.
  • the stator (3, 3A, 3B) includes a plurality of tooth blocks (TB1) arranged in a ring.
  • Each of the plurality of tooth blocks (TB1) has teeth (4), insulators (5, 5C), and windings (6).
  • Teeth (4) extend in the radial direction (D2).
  • the insulators (5, 5C) have electrical insulation. Insulators (5, 5C) cover at least part of the teeth (4).
  • a winding (6) is wound around an insulator (5, 5C).
  • the insulator (5, 5C) includes a first opposing surface (5e) facing the teeth (4).
  • Teeth (4) include second opposing surfaces (4e) facing insulators (5, 5C).
  • the insulator (5, 5C) has a first fitting portion (G1) on the first opposing surface (5e).
  • the tooth (4) has a second fitting portion (P1) that fits with the first fitting portion (G1) on the second opposing surface (4e).
  • the contact area between the insulators (5, 5C) and the teeth (4) is larger than when the first fitting portion (G1) and the second fitting portion (P1) are absent. Therefore, when pressure is applied to the insulators (5, 5C), the pressure can be relieved, and the possibility of damage to the insulators (5, 5C) can be reduced.
  • the cross-sectional shape of the first fitting portion (G1) is triangular.
  • the cross-sectional shape of the first fitting portion (G1) is trapezoidal.
  • the cross-sectional shape of the first fitting portion (G1) is semicircular.
  • the insulator (5C) has a plurality of first fitting portions (G1).
  • Planar view WHEREIN A some 1st fitting part (G1) is scattered.
  • the first fitting portion (G1) is arranged with a plurality of tooth blocks (TB1). It extends in an axial direction (D3) perpendicular to both the circumferential direction (D1) and the radial direction (D2).
  • the first fitting portion (G1) is a concave portion.
  • the second fitting portion (P1) is a convex portion.
  • each of the plurality of tooth blocks (TB1) molds the winding (6). It further comprises a mold member (M1).
  • the winding (6) can release heat to the teeth (4) via the mold member (M1). That is, it is possible to improve the efficiency of heat radiation from the windings (6) to the teeth (4).
  • each of the plurality of tooth blocks (TB1) is arranged in the adjacent tooth block (TB1). Contact.
  • the pressure that the insulators (5, 5C) receive from the adjacent tooth blocks (TB1) can be relieved by the first fitting portion (G1) and the second fitting portion (P1).
  • Configurations other than the first aspect are not essential to the stator (3, 3A, 3B) and can be omitted as appropriate.
  • a motor (1) according to a tenth aspect includes a stator (3, 3A, 3B) according to any one of the first to ninth aspects, and a rotor (2).
  • the rotor (2) has a rotor shaft (21). The rotor (2) rotates relative to the stator (3, 3A, 3B).
  • stator and motor of the present disclosure it is possible to reduce the possibility of damage to the insulator of the stator. This makes it possible to obtain a highly reliable stator and motor. That is, the stator and motor of the present disclosure are industrially useful.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Insulation, Fastening Of Motor, Generator Windings (AREA)

Abstract

The purpose of the present invention is to reduce the possibility of damage to an insulator. A stator (3) comprises a plurality of annularly aligned teeth blocks (TB1). The plurality of teeth blocks (TB1) each have teeth (4), an insulator (5) and a winding (6). The teeth (4) extend in a radial direction (D2). The insulator (5) includes a first opposing surface (5e) opposing the teeth (4). The teeth (4) include a second opposing surface (4e) opposing the insulator (5). The insulator (5) has, on the first opposing surface (5e) thereof, a first mating section (G1). The teeth (4) have, on the second opposing surface (4e) thereof, a second mating section (P1) which mates with the first mating section (G1).

Description

ステータ及びモータstator and motor
　本開示は一般にステータ及びモータに関し、より詳細には、ティースと、ティースの少なくとも一部を覆うインシュレータと、を備えるステータ、及び、このステータを備えるモータに関する。 TECHNICAL FIELD The present disclosure generally relates to stators and motors, and more particularly relates to stators including teeth and insulators covering at least a portion of the teeth, and motors including the stators.
　特許文献１に記載のモータ用ステータは、モータを構成するステータコアのティースのスロット壁面に絶縁紙が配設され、該絶縁紙を介してティース周りにコイルが形成されてなる。絶縁紙におけるスロット壁面側の表面もしくはコイル側の表面の少なくとも一方には、相互に連続する凹部と凸部が形成されている。凹部は冷却媒体流路となっている。 In the motor stator described in Patent Document 1, insulating paper is arranged on the slot walls of the teeth of the stator core constituting the motor, and coils are formed around the teeth via the insulating paper. On at least one of the surface of the insulating paper on the side of the slot wall surface and the surface on the side of the coil, recesses and protrusions that are continuous with each other are formed. The concave portion serves as a cooling medium flow path.
特開２０１８－０７８７６４号公報JP 2018-078764 A
　特許文献１に記載されたようなステータにおいて、ティースの周りには、電気絶縁性のインシュレータが設けられる場合がある。 In the stator as described in Patent Document 1, an electrically insulating insulator may be provided around the teeth.
　本開示は、インシュレータが損傷する可能性を低減させることができるステータ及びモータを提供することを目的とする。 An object of the present disclosure is to provide a stator and motor that can reduce the possibility of insulator damage.
　本開示の一態様に係るステータは、環状に並んだ複数のティースブロックを備える。前記複数のティースブロックの各々は、ティースと、インシュレータと、巻線と、を有する。前記ティースは、径方向に延びている。前記インシュレータは、電気絶縁性を有する。前記インシュレータは、前記ティースを覆う。前記巻線は、前記インシュレータに巻かれている。前記インシュレータは、前記ティースとの第１対向面を含む。前記ティースは、前記インシュレータとの第２対向面を含む。前記インシュレータは、前記第１対向面に第１嵌合部を有する。前記ティースは、前記第２対向面に、前記第１嵌合部と嵌合する第２嵌合部を有する。 A stator according to one aspect of the present disclosure includes a plurality of annularly arranged tooth blocks. Each of the plurality of tooth blocks has teeth, insulators, and windings. The teeth extend radially. The insulator has electrical insulation. The insulator covers the teeth. The winding is wound around the insulator. The insulator includes a first surface facing the teeth. The tooth includes a second surface facing the insulator. The insulator has a first fitting portion on the first opposing surface. The tooth has a second fitting portion that fits with the first fitting portion on the second facing surface.
　本開示の一態様に係るモータは、前記ステータと、ロータと、を備える。前記ロータは、ロータシャフトを有する。前記ロータは、前記ステータに対して回転する。 A motor according to one aspect of the present disclosure includes the stator and the rotor. The rotor has a rotor shaft. The rotor rotates with respect to the stator.
　本開示は、インシュレータが損傷する可能性を低減させることができるという利点がある。 The present disclosure has the advantage of reducing the possibility of insulator damage.
図１は、実施形態１に係るステータの要部の正断面図（後述）である。FIG. 1 is a front cross-sectional view (described later) of a main part of a stator according to Embodiment 1. FIG. 図２は、同上のステータを備えるモータの正面図である。FIG. 2 is a front view of a motor provided with the same stator. 図３は、同上のステータのインシュレータを上方から見た斜視図である。FIG. 3 is a perspective view of the insulator of the stator as seen from above. 図４は、同上のステータのインシュレータを下方から見た斜視図である。FIG. 4 is a perspective view of the insulator of the stator as seen from below. 図５は、第一変形例に係るステータの要部の正断面図である。FIG. 5 is a front cross-sectional view of a main part of a stator according to a first modified example. 図６は、第二変形例に係るステータの要部の正断面図である。FIG. 6 is a front cross-sectional view of essential parts of a stator according to a second modification. 図７は、実施形態２に係るステータのインシュレータを下方から見た斜視図である。FIG. 7 is a perspective view of the insulator of the stator according to Embodiment 2 as seen from below.
　以下、実施形態に係るステータ及びモータについて、図面を用いて説明する。ただし、下記の実施形態は、本開示の様々な実施形態の１つに過ぎない。下記の実施形態は、本開示の目的を達成できれば、設計等に応じて種々の変更が可能である。また、下記の実施形態において説明する各図は、模式的な図であり、図中の各構成要素の大きさ及び厚さそれぞれの比が必ずしも実際の寸法比を反映しているとは限らない。 The stator and motor according to the embodiment will be described below with reference to the drawings. However, the embodiment described below is but one of the various embodiments of the present disclosure. The embodiments described below can be modified in various ways according to design and the like as long as the objects of the present disclosure can be achieved. Each drawing described in the following embodiments is a schematic drawing, and the ratio of the size and thickness of each component in the drawing does not necessarily reflect the actual dimensional ratio. .
　（実施形態１）
　（概要）
　図１は、実施形態１に係るステータ３の要部の正断面図である。図２は、実施形態１に係るステータ３を備えるモータ１の正面図である。なお、正断面図とは、モータを軸方向Ｄ３に垂直な平面で切ったときの断面図のことである。なお、ロータシャフト２１は、円柱形状を有する。「軸方向」とは、ロータシャフト２１の回転軸に平行な方向である。また、以下に示すが、「径方向」とは、ロータシャフト２１の中心からロータシャフト２１の側面へ向かう方向である。「周方向」とは、ロータシャフトの回転方向である。軸方向、径方向および周方向は、互いに直交する。 (Embodiment 1)
(overview)
FIG. 1 is a front cross-sectional view of a main part of a stator 3 according to Embodiment 1. FIG. FIG. 2 is a front view of the motor 1 including the stator 3 according to Embodiment 1. FIG. The front cross-sectional view is a cross-sectional view when the motor is cut along a plane perpendicular to the axial direction D3. Note that the rotor shaft 21 has a cylindrical shape. “Axial direction” is a direction parallel to the rotation axis of the rotor shaft 21 . Also, as described below, the “radial direction” is the direction from the center of the rotor shaft 21 toward the side surface of the rotor shaft 21 . "Circumferential" is the direction of rotation of the rotor shaft. The axial, radial and circumferential directions are orthogonal to each other.
　図１、図２に示すように、本実施形態のステータ３は、環状に並んだ複数のティースブロックＴＢ１を備える。複数のティースブロックＴＢ１の各々は、ティース４と、インシュレータ５と、巻線６と、を有する。ただし、図２ではインシュレータ５、巻線６及び後述の絶縁シート７の図示を省略している。 As shown in FIGS. 1 and 2, the stator 3 of this embodiment includes a plurality of tooth blocks TB1 arranged in a ring. Each of the plurality of tooth blocks TB1 has teeth 4 , insulators 5 and windings 6 . However, in FIG. 2, illustration of the insulator 5, the winding 6, and the insulating sheet 7, which will be described later, is omitted.
　ティース４は、径方向Ｄ２に延びている。インシュレータ５は、電気絶縁性を有する。インシュレータ５は、ティース４の少なくとも一部を覆う。巻線６は、インシュレータ５に巻かれている。インシュレータ５は、ティース４との第１対向面５ｅを含む。ティース４は、インシュレータ５との第２対向面４ｅを含む。インシュレータ５は、第１対向面５ｅに第１嵌合部Ｇ１を有する。ティース４は、第２対向面４ｅに、第１嵌合部Ｇ１と嵌合する第２嵌合部Ｐ１を有する。 The teeth 4 extend in the radial direction D2. The insulator 5 has electrical insulation. The insulator 5 covers at least part of the teeth 4 . Winding 6 is wound around insulator 5 . Insulator 5 includes a first opposing surface 5 e facing teeth 4 . Teeth 4 include second opposing surfaces 4 e facing insulator 5 . The insulator 5 has a first fitting portion G1 on the first opposing surface 5e. The tooth 4 has a second fitting portion P1 that fits with the first fitting portion G1 on the second opposing surface 4e.
　本実施形態によれば、第１嵌合部Ｇ１及び第２嵌合部Ｐ１が無い場合と比較して、インシュレータ５とティース４との接触面積が大きい。そのため、インシュレータ５に圧力が加えられた場合に圧力を緩和することができ、インシュレータ５が損傷する可能性を低減できる。よって、インシュレータ５の損傷に伴うインシュレータ５の電気的な絶縁性能の低下を抑制できる。 According to this embodiment, the contact area between the insulator 5 and the teeth 4 is larger than when the first fitting portion G1 and the second fitting portion P1 are not provided. Therefore, when pressure is applied to the insulator 5, the pressure can be relieved, and the possibility of damage to the insulator 5 can be reduced. Therefore, deterioration of the electrical insulation performance of the insulator 5 due to damage to the insulator 5 can be suppressed.
　インシュレータ５の損傷とは、例えば、クラックの発生、欠け、及び、破断等である。また、インシュレータ５とティース４との接触面積が増加することにより、インシュレータ５の損傷の前段階の異常が発生する可能性をも低減できる。インシュレータ５の損傷の前段階の異常とは、例えば、インシュレータ５の白化である。インシュレータ５の白化とは、インシュレータ５の表面の色が白くなる現象である。インシュレータ５の白化は、インシュレータ５に局所的な応力が加わり、インシュレータ５を構成する材料の組織が変形することで生じる。 Damage to the insulator 5 is, for example, cracking, chipping, breakage, and the like. Further, by increasing the contact area between the insulator 5 and the teeth 4, the possibility of occurrence of an abnormality in the stage prior to the damage of the insulator 5 can be reduced. An abnormality that precedes damage to the insulator 5 is, for example, whitening of the insulator 5 . Whitening of the insulator 5 is a phenomenon in which the color of the surface of the insulator 5 becomes white. Whitening of the insulator 5 occurs when a local stress is applied to the insulator 5 and the structure of the material forming the insulator 5 is deformed.
　（詳細）
　以下、本実施形態のステータ３について、より詳細に説明する。 (detail)
The stator 3 of this embodiment will be described in more detail below.
　（１）モータ
　図２に示すように、ステータ３は、モータ１に備えられる。モータ１は、ステータ３と、ロータ２と、を備える。ロータ２は、ロータシャフト２１を有する。ロータ２は、ステータ３に対して回転する。また、モータ１は、モータハウジングを更に備えていてもよい。モータハウジングは、ステータ３と、ロータ２と、を収容する。 (1) Motor As shown in FIG. 2 , the stator 3 is provided in the motor 1 . A motor 1 includes a stator 3 and a rotor 2 . The rotor 2 has a rotor shaft 21 . Rotor 2 rotates with respect to stator 3 . Also, the motor 1 may further include a motor housing. The motor housing accommodates the stator 3 and the rotor 2 .
　（２）ロータ
　ロータ２は、例えば、図２に示すように、ロータコア２０と、ロータシャフト２１と、複数（図２では６つ）の永久磁石２２と、を有する。 (2) Rotor The rotor 2 has, for example, a rotor core 20, a rotor shaft 21, and a plurality of (six in FIG. 2) permanent magnets 22, as shown in FIG.
　ロータコア２０は、磁性材料により形成されている。ロータコア２０の形状は、円柱状である。ロータコア２０は、その中心に、ロータシャフト２１が通された第１貫通孔を有する。また、ロータコア２０は、第１貫通孔の周りに、複数の永久磁石２２が挿入された複数の第２貫通孔を有する。複数の永久磁石２２は、例えば、ロータシャフト２１の軸方向から見て、ロータシャフト２１を中心として放射状に配置される。ステータ３の巻線６（コイル）から発生する磁束と複数の永久磁石２２との間の電磁気的相互作用により、ロータ２がステータ３に対して回転する。 The rotor core 20 is made of a magnetic material. The rotor core 20 has a cylindrical shape. The rotor core 20 has a first through hole at its center through which the rotor shaft 21 is passed. Further, the rotor core 20 has a plurality of second through holes around the first through holes, into which a plurality of permanent magnets 22 are inserted. The plurality of permanent magnets 22 are arranged radially around the rotor shaft 21 when viewed from the axial direction of the rotor shaft 21, for example. The rotor 2 rotates relative to the stator 3 due to the electromagnetic interaction between the magnetic flux generated from the windings 6 (coils) of the stator 3 and the plurality of permanent magnets 22 .
　本実施形態で言う周方向Ｄ１は、ロータ２の回転方向と一致している。また、本実施形態で言う径方向Ｄ２は、ロータシャフト２１の径方向と一致している。さらに、本実施形態で言う軸方向Ｄ３は、ロータシャフト２１の軸方向と一致している。周方向Ｄ１と径方向Ｄ２と軸方向Ｄ３とは、互いに直交する。また、本実施形態および以下に示す実施形態では、軸方向Ｄ３の一方向を上と規定し、他方向を下と規定する。また、本実施形態および以下に示す実施形態で言う外側とは、ある対象物について径方向Ｄ２に沿ってモータ１の中心から遠い側を意味し、内側とは、同じ対象物について径方向Ｄ２に沿ってモータ１の中心に近い側を意味する。軸方向Ｄ３から見て、モータ１の中心にはロータシャフト２１が配置されている。 The circumferential direction D1 referred to in this embodiment matches the rotation direction of the rotor 2 . Moreover, the radial direction D<b>2 referred to in this embodiment coincides with the radial direction of the rotor shaft 21 . Furthermore, the axial direction D<b>3 referred to in this embodiment matches the axial direction of the rotor shaft 21 . The circumferential direction D1, the radial direction D2, and the axial direction D3 are orthogonal to each other. In addition, in this embodiment and the embodiments described below, one direction of the axial direction D3 is defined as upward, and the other direction is defined as downward. In this embodiment and the embodiments described below, the term "outer side" means the side farther from the center of the motor 1 along the radial direction D2 with respect to a certain object, and the term "inner side" means the side farther from the center of the motor 1 along the radial direction D2 with respect to the same object. means the side closer to the center of the motor 1 along. A rotor shaft 21 is arranged at the center of the motor 1 when viewed from the axial direction D3.
　（３）ステータ
　図１、図２に示すように、ステータ３は、複数（図２では９つ）のティースブロックＴＢ１を備える。複数のティースブロックＴＢ１は、それぞれ同一の構成を有している。 (3) Stator As shown in FIGS. 1 and 2, the stator 3 includes a plurality of (nine in FIG. 2) tooth blocks TB1. A plurality of tooth blocks TB1 have the same configuration.
　複数のティースブロックＴＢ１の各々は、ティース４と、インシュレータ５と、巻線６と、絶縁シート７と、を有する。ティース４の表面がインシュレータ５に覆われ、さらに、インシュレータ５の上から、ティース４に巻線６が巻かれる。その後、複数のティースブロックＴＢ１が互いに結合されることにより、ステータ３が形成される。複数のティースブロックＴＢ１は、ロータ２を囲むように環状に結合されている。 Each of the plurality of tooth blocks TB1 has teeth 4, insulators 5, windings 6, and insulating sheets 7. The surfaces of teeth 4 are covered with insulators 5 , and windings 6 are wound around teeth 4 from above insulators 5 . After that, the stator 3 is formed by coupling the plurality of tooth blocks TB1 to each other. A plurality of tooth blocks TB1 are annularly coupled to surround the rotor 2 .
　（４）ティース
　ティース４は、磁性材料により形成されている。ティース４は、胴部４１と、２つの外突部４２と、２つの内突部４３と、を含む。ティース４は、周方向Ｄ１に沿って外周面４ａと内周面４ｂとを有する。すなわち、外周面４ａは、ティース４の外側の面であり、内周面４ｂは、ティース４の内側の面である。また、ティース４は、外周面４ａと内周面４ｂとの間に外側面４ｃと内側面４ｄとを有する。隣接する２つのティース４において、外側面４ｃは接し、内側面４ｄの間には空間が形成される。胴部４１の形状は、例えば、直方体状である。胴部４１は、径方向Ｄ２に延びている。２つの外突部４２は、外周面４ａを含みかつ胴部４１の側部から周方向Ｄ１に沿って突出している。すなわち、２つの外突部４２は、胴部４１の外端部を含む近傍に形成されている。２つの外突部４２は、互いに反対向きに突出している。２つの内突部４３は、内周面４ｂを含みかつ胴部４１の側部から周方向Ｄ１に沿って突出している。２つの内突部４３は、互いに反対向きに突出している。すなわち、２つの内突部４３は、胴部４１の内端部を含む近傍に形成されている。 (4) Teeth The teeth 4 are made of a magnetic material. The tooth 4 includes a trunk portion 41 , two outer protrusions 42 and two inner protrusions 43 . The tooth 4 has an outer peripheral surface 4a and an inner peripheral surface 4b along the circumferential direction D1. That is, the outer peripheral surface 4 a is the outer surface of the tooth 4 , and the inner peripheral surface 4 b is the inner surface of the tooth 4 . Moreover, the tooth 4 has an outer side surface 4c and an inner side surface 4d between the outer peripheral surface 4a and the inner peripheral surface 4b. In two adjacent teeth 4, the outer side surfaces 4c are in contact with each other, and a space is formed between the inner side surfaces 4d. The shape of the trunk|drum 41 is a rectangular parallelepiped shape, for example. The trunk portion 41 extends in the radial direction D2. The two outer protrusions 42 include the outer peripheral surface 4a and protrude from the side portion of the body portion 41 along the circumferential direction D1. That is, the two outer protrusions 42 are formed in the vicinity of the outer end of the trunk portion 41 . The two outer protrusions 42 protrude in opposite directions. The two inner protrusions 43 include the inner peripheral surface 4b and protrude from the side portion of the body portion 41 along the circumferential direction D1. The two inner protrusions 43 protrude in opposite directions. That is, the two inner protrusions 43 are formed in the vicinity of the body portion 41 including the inner end.
　ティースブロックＴＢ１の外突部４２と、このティースブロックＴＢ１に隣り合うティースブロックＴＢ１の外突部４２とは、互いに結合されている。例えば、各外突部４２には凹凸が設けられており、凹凸の嵌め合いにより、互いに結合されている。このように、互いに隣り合う２つのティースブロックＴＢ１は、外突部４２において互いに結合されている。 The outer protrusion 42 of the tooth block TB1 and the outer protrusion 42 of the tooth block TB1 adjacent to this tooth block TB1 are coupled to each other. For example, each of the outer protrusions 42 is provided with projections and recesses, and is coupled to each other by fitting the projections and recesses. In this manner, two tooth blocks TB1 adjacent to each other are coupled to each other at the outer protrusions 42. As shown in FIG.
　ティースブロックＴＢ１の内突部４３と、このティースブロックＴＢ１に隣り合うティースブロックＴＢ１の内突部４３とは、互いに対向している。 The inner protrusion 43 of the tooth block TB1 and the inner protrusion 43 of the tooth block TB1 adjacent to this tooth block TB1 face each other.
　互いに隣り合う２つのティース４の間には、スロットＳＴ１が形成されている。スロットＳＴ１は、空洞である。スロットＳＴ１には、インシュレータ５の一部と、巻線６の一部と、絶縁シート７と、が配置される。スロットＳＴ１は、２つのティース４の各々の胴部４１と、外突部４２と、内突部４３と、に囲まれている。 A slot ST1 is formed between two teeth 4 adjacent to each other. Slot ST1 is hollow. A portion of the insulator 5, a portion of the winding 6, and the insulating sheet 7 are arranged in the slot ST1. The slot ST1 is surrounded by the body portion 41, the outer protrusion 42, and the inner protrusion 43 of each of the two teeth 4. As shown in FIG.
　ティース４は、インシュレータ５との対向面４ｅ（第２対向面４ｅ）に、複数の第２嵌合部Ｐ１を有する。より詳細には、ティース４は、スロットＳＴ１に臨む各面（内側面４ｄ）に、複数の第２嵌合部Ｐ１を有する。つまり、胴部４１と、２つの外突部４２と、２つの内突部４３と、にそれぞれ、複数の第２嵌合部Ｐ１が設けられている。第２対向面４ｅは、内側面４ｄの一部をなす。 The tooth 4 has a plurality of second fitting portions P1 on the face 4e (second face 4e) facing the insulator 5 . More specifically, the tooth 4 has a plurality of second fitting portions P1 on each surface (inner surface 4d) facing the slot ST1. That is, the trunk portion 41, the two outer protrusions 42, and the two inner protrusions 43 are each provided with a plurality of second fitting portions P1. The second facing surface 4e forms part of the inner surface 4d.
　ティース４において、インシュレータ５との対向面４ｅは、インシュレータ５に直接対向していなくてもよく、対向面４ｅとインシュレータ５との間に別の部材が介在していてもよい。例えば、図１に示すように、対向面４ｅとインシュレータ５との間に絶縁シート７が介在していてもよい。 In the tooth 4 , the facing surface 4 e facing the insulator 5 may not directly face the insulator 5 , and another member may be interposed between the facing surface 4 e and the insulator 5 . For example, an insulating sheet 7 may be interposed between the facing surface 4e and the insulator 5, as shown in FIG.
　各々の第２嵌合部Ｐ１は、凸部である。第２嵌合部Ｐ１は、軸方向Ｄ３に延びている。つまり、第２嵌合部Ｐ１は、軸方向Ｄ３に延びた凸状に形成されている。軸方向Ｄ３と直交する断面において、第２嵌合部Ｐ１の断面形状は、半円状である。第２嵌合部Ｐ１は、全体として、半円柱状に形成されている。 Each second fitting portion P1 is a convex portion. The second fitting portion P1 extends in the axial direction D3. That is, the second fitting portion P1 is formed in a convex shape extending in the axial direction D3. In a cross section orthogonal to the axial direction D3, the cross-sectional shape of the second fitting portion P1 is semicircular. The second fitting portion P1 is formed in a semi-cylindrical shape as a whole.
　第２嵌合部Ｐ１は、例えば、軸方向Ｄ３におけるティース４の両端に亘って形成されている。胴部４１と、２つの外突部４２と、２つの内突部４３と、のそれぞれにおいて、複数の第２嵌合部Ｐ１は、軸方向Ｄ３と交差する方向に等間隔に並んでいる。　なお、上記の例では、第２対向面４ｅは、内側面４ｄの一部をなすとしたが、第２対向面４ｅは、内側面４ｄの全部をなしていてもよい。 The second fitting portion P1 is formed, for example, across both ends of the tooth 4 in the axial direction D3. In each of the trunk portion 41, the two outer protrusions 42, and the two inner protrusions 43, the plurality of second fitting portions P1 are arranged at regular intervals in a direction intersecting the axial direction D3. In the above example, the second facing surface 4e forms part of the inner side surface 4d, but the second facing surface 4e may form the entire inner side surface 4d.
　（５）インシュレータ
　図１に示すインシュレータ５は、電気絶縁性を有する。インシュレータ５は、例えば、合成樹脂を材料として形成されている。インシュレータ５は、形の定まった部材であり、例えば、成形品である。インシュレータ５は、ティース４の少なくとも一部を覆う。 (5) Insulator The insulator 5 shown in FIG. 1 has electrical insulation. The insulator 5 is made of synthetic resin, for example. The insulator 5 is a member with a fixed shape, such as a molded product. The insulator 5 covers at least part of the teeth 4 .
　また、インシュレータ５の一部は、スロットＳＴ１に挿入されている。これにより、インシュレータ５はティース４の胴部４１を囲むように設けられている。 Also, part of the insulator 5 is inserted into the slot ST1. Thereby, the insulator 5 is provided so as to surround the body portion 41 of the tooth 4 .
　図３は、実施形態１に係るステータ３のインシュレータ５を上方から見た斜視図である。図４は、実施形態１に係るステータ３のインシュレータ５を下方から見た斜視図である。図３、図４に示すように、インシュレータ５は、巻回部５１と、第１鍔部５２と、第２鍔部５３と、を有する。 FIG. 3 is a perspective view of the insulator 5 of the stator 3 according to Embodiment 1 as viewed from above. FIG. 4 is a perspective view of the insulator 5 of the stator 3 according to Embodiment 1 as seen from below. As shown in FIGS. 3 and 4 , the insulator 5 has a winding portion 51 , a first flange portion 52 and a second flange portion 53 .
　巻回部５１の形状は、直方体状である。巻回部５１のうち、径方向Ｄ２の両端面は、開口している。また、巻回部５１のうち、軸方向Ｄ３の一端面（下面）は、開口している。巻回部５１は、ティース４の胴部４１を覆う。 The shape of the winding portion 51 is a rectangular parallelepiped. Both end surfaces of the winding portion 51 in the radial direction D2 are open. One end surface (lower surface) of the winding portion 51 in the axial direction D3 is open. The winding portion 51 covers the body portion 41 of the tooth 4 .
　巻回部５１は、第１側部５１１と、第２側部５１２と、頂部５１３と、を有する。頂部５１３は、胴部４１を軸方向Ｄ３から覆う。つまり、頂部５１３は、胴部４１の上面を覆う。第１側部５１１及び第２側部５１２は、周方向Ｄ１において互いに対向している。第１側部５１１及び第２側部５１２は、頂部５１３から軸方向Ｄ３に突出している。第１側部５１１及び第２側部５１２は、胴部４１のうち径方向Ｄ２及び軸方向Ｄ３に沿った面を覆う。軸方向Ｄ３における第１側部５１１及び第２側部５１２の長さは、例えば、軸方向Ｄ３におけるティース４の厚さと等しい。 The winding portion 51 has a first side portion 511 , a second side portion 512 and a top portion 513 . The top portion 513 covers the trunk portion 41 from the axial direction D3. That is, the top portion 513 covers the upper surface of the trunk portion 41 . The first side portion 511 and the second side portion 512 face each other in the circumferential direction D1. The first side portion 511 and the second side portion 512 protrude from the top portion 513 in the axial direction D3. The first side portion 511 and the second side portion 512 cover the surface of the body portion 41 along the radial direction D2 and the axial direction D3. The lengths of the first side portion 511 and the second side portion 512 in the axial direction D3 are, for example, equal to the thickness of the teeth 4 in the axial direction D3.
　第１鍔部５２は、巻回部５１の外側の端につながっている。第１鍔部５２は、側片５２１と、側片５２２と、主片５２３と、を有する。主片５２３は、ティース４のうち２つの外突部４２の少なくとも一部を含む領域を、軸方向Ｄ３から覆う。つまり、主片５２３は、ティース４の上面の一部を覆う。側片５２１及び側片５２２は、主片５２３から軸方向Ｄ３に突出している。また、側片５２１は、第１側部５１１から周方向Ｄ１の一方向に突出しており、側片５２２は、第２側部５１２から周方向Ｄ１の他方向に突出している。側片５２１は、一方の外突部４２の内側の面を覆う。側片５２２は、他方の外突部４２の内側の面を覆う。 The first collar portion 52 is connected to the outer edge of the winding portion 51 . The first collar portion 52 has a side piece 521 , a side piece 522 and a main piece 523 . The main piece 523 covers a region of the tooth 4 including at least a portion of the two outer protrusions 42 from the axial direction D3. That is, the main piece 523 partially covers the top surface of the tooth 4 . The side piece 521 and the side piece 522 protrude from the main piece 523 in the axial direction D3. The side piece 521 protrudes from the first side portion 511 in one direction in the circumferential direction D1, and the side piece 522 protrudes from the second side portion 512 in the other direction in the circumferential direction D1. The side piece 521 covers the inner surface of one outer protrusion 42 . The side piece 522 covers the inner surface of the other outer protrusion 42 .
　第２鍔部５３は、巻回部５１の内側の端につながっている。第２鍔部５３は、側片５３１と、側片５３２と、主片５３３と、を有する。主片５３３は、ティース４のうち２つの内突部４３の少なくとも一部を含む領域を、軸方向Ｄ３から覆う。つまり、主片５３３は、ティース４の上面の一部を覆う。側片５３１及び側片５３２は、主片５３３から軸方向Ｄ３に突出している。また、側片５３１は、第１側部５１１から周方向Ｄ１の一方向に突出しており、側片５３２は、第２側部５１２から周方向Ｄ１の他方向に突出している。側片５３１は、一方の内突部４３の外側の面を覆う。側片５３２は、他方の内突部４３の外側の面を覆う。 The second collar portion 53 is connected to the inner end of the winding portion 51 . The second collar portion 53 has a side piece 531 , a side piece 532 and a main piece 533 . The main piece 533 covers a region including at least a portion of the two inner projections 43 of the teeth 4 from the axial direction D3. That is, the main piece 533 partially covers the upper surface of the tooth 4 . The side piece 531 and the side piece 532 protrude from the main piece 533 in the axial direction D3. The side piece 531 protrudes from the first side portion 511 in one direction in the circumferential direction D1, and the side piece 532 protrudes from the second side portion 512 in the other direction in the circumferential direction D1. The side piece 531 covers the outer surface of one inner protrusion 43 . The side piece 532 covers the outer surface of the other inner protrusion 43 .
　インシュレータ５のうち、第１側部５１１、第２側部５１２、側片５２１、側片５２２、側片５３１、及び、側片５３２は、スロットＳＴ１に配置されており、ティース４との対向面５ｅ（第１対向面５ｅ）を含む。インシュレータ５において、ティース４との対向面５ｅは、ティース４に直接対向していなくてもよく、対向面５ｅとティース４との間に別の部材が介在していてもよい。例えば、図１に示すように、対向面５ｅとティース４との間に絶縁シート７が介在していてもよい。 The first side portion 511, the second side portion 512, the side piece 521, the side piece 522, the side piece 531, and the side piece 532 of the insulator 5 are arranged in the slot ST1, and face the tooth 4. 5e (first opposing surface 5e). In the insulator 5 , the surfaces 5 e facing the teeth 4 may not directly face the teeth 4 , and another member may be interposed between the surfaces 5 e and the teeth 4 . For example, as shown in FIG. 1, an insulating sheet 7 may be interposed between the facing surface 5e and the teeth 4. As shown in FIG.
　第１側部５１１、第２側部５１２、側片５２１、側片５２２、側片５３１、及び、側片５３２はそれぞれ、例えば、板状に形成されている。第１側部５１１、第２側部５１２、側片５２１、側片５２２、側片５３１、及び、側片５３２はそれぞれ、ティース４との対向面５ｅに、複数の第１嵌合部Ｇ１を有する。第１嵌合部Ｇ１は、凹部である。第１嵌合部Ｇ１は、軸方向Ｄ３に延びている。つまり、第１嵌合部Ｇ１は、軸方向Ｄ３に延びた溝状に形成されている。軸方向Ｄ３と直交する断面において、第１嵌合部Ｇ１の断面形状は、半円状である。第１嵌合部Ｇ１の形状は、第２嵌合部Ｐ１に沿った形状である。 The first side portion 511, the second side portion 512, the side piece 521, the side piece 522, the side piece 531, and the side piece 532 are each formed in a plate shape, for example. The first side portion 511, the second side portion 512, the side piece 521, the side piece 522, the side piece 531, and the side piece 532 each have a plurality of first fitting portions G1 on the surface 5e facing the tooth 4. have. The first fitting portion G1 is a recess. The first fitting portion G1 extends in the axial direction D3. That is, the first fitting portion G1 is formed in a groove shape extending in the axial direction D3. In a cross section orthogonal to the axial direction D3, the cross-sectional shape of the first fitting portion G1 is semicircular. The shape of the first fitting portion G1 is a shape along the second fitting portion P1.
　第１側部５１１及び第２側部５１２は、胴部４１との対向面５ｅに複数の第１嵌合部Ｇ１を有し、側片５２１及び側片５２２は、外突部４２との対向面５ｅに複数の第１嵌合部Ｇ１を有し、側片５３１及び側片５３２は、内突部４３との対向面５ｅに複数の第１嵌合部Ｇ１を有する。軸方向Ｄ３における各々の第１嵌合部Ｇ１の長さは、例えば、軸方向Ｄ３における第１側部５１１及び第２側部５１２の長さと等しい。第１側部５１１、第２側部５１２、側片５２１、側片５２２、側片５３１、及び、側片５３２のそれぞれにおいて、複数の第１嵌合部Ｇ１は、軸方向Ｄ３と交差する方向に等間隔に並んでいる。 The first side portion 511 and the second side portion 512 have a plurality of first fitting portions G1 on the surface 5e facing the body portion 41, and the side piece 521 and the side piece 522 face the outer projecting portion 42. The surface 5 e has a plurality of first fitting portions G<b>1 , and the side piece 531 and the side piece 532 have a plurality of first fitting portions G<b>1 on the surface 5 e facing the inner protrusion 43 . The length of each first fitting portion G1 in the axial direction D3 is, for example, equal to the length of the first side portion 511 and the second side portion 512 in the axial direction D3. In each of the first side portion 511, the second side portion 512, the side piece 521, the side piece 522, the side piece 531, and the side piece 532, the plurality of first fitting portions G1 extend in a direction intersecting the axial direction D3. are evenly spaced.
　図１に示すように、第１嵌合部Ｇ１の断面形状は、半円状である。より詳細には、軸方向Ｄ３と直交する断面における第１嵌合部Ｇ１の形状は、半円状である。 As shown in FIG. 1, the cross-sectional shape of the first fitting portion G1 is semicircular. More specifically, the shape of the first fitting portion G1 in a cross section orthogonal to the axial direction D3 is semicircular.
　第１嵌合部Ｇ１の深さは、第１嵌合部Ｇ１の周縁部の厚さの１／２程度が好ましい。これにより、インシュレータ５の強度を確保しつつ、インシュレータ５とティース４との接触面積を確保できる。第１嵌合部Ｇ１の深さは、例えば、第１嵌合部Ｇ１の周縁部の厚さの１／３より大きいことが好ましい。また、第１嵌合部Ｇ１の深さは、例えば、第１嵌合部Ｇ１の周縁部の厚さの２／３より小さいことが好ましい。 The depth of the first fitting portion G1 is preferably about 1/2 of the thickness of the peripheral portion of the first fitting portion G1. Thereby, the contact area between the insulator 5 and the teeth 4 can be ensured while ensuring the strength of the insulator 5 . It is preferable that the depth of the first fitting portion G1 is, for example, greater than 1/3 of the thickness of the peripheral portion of the first fitting portion G1. Also, the depth of the first fitting portion G1 is preferably smaller than, for example, 2/3 of the thickness of the peripheral portion of the first fitting portion G1.
　第１嵌合部Ｇ１は、第２嵌合部Ｐ１と同形、かつ、第２嵌合部Ｐ１よりも一回り大きい。第１嵌合部Ｇ１は、第２嵌合部Ｐ１に嵌合している。つまり、第１嵌合部Ｇ１（凹部）に第２嵌合部Ｐ１（凸部）が挿入されている。なお、第１嵌合部Ｇ１と第２嵌合部Ｐ１との間には、絶縁シート７が挟まれている（図１参照）。 The first fitting part G1 has the same shape as the second fitting part P1 and is slightly larger than the second fitting part P1. The first fitting portion G1 is fitted to the second fitting portion P1. That is, the second fitting portion P1 (projection) is inserted into the first fitting portion G1 (recess). An insulating sheet 7 is sandwiched between the first fitting portion G1 and the second fitting portion P1 (see FIG. 1).
　本実施形態では、複数の第１嵌合部Ｇ１と複数の第２嵌合部Ｐ１とが一対一で対応しており、それぞれ対応する第１嵌合部Ｇ１と第２嵌合部Ｐ１とが嵌合している。 In the present embodiment, the plurality of first fitting portions G1 and the plurality of second fitting portions P1 are in one-to-one correspondence, and the corresponding first fitting portions G1 and second fitting portions P1 are mated.
　（６）巻線
　巻線６は、例えば、銅又は銅合金等を材料として形成された線状の導体と、導体を被覆する絶縁体と、を含む。巻線６は、ティース４の胴部４１に巻かれている。巻線６とティース４との間には、インシュレータ５が介在している。つまり、巻線６は、インシュレータ５を介して胴部４１に巻かれている。 (6) Winding The winding 6 includes, for example, a linear conductor made of copper or a copper alloy, and an insulator covering the conductor. The windings 6 are wound around the body portions 41 of the teeth 4 . An insulator 5 is interposed between the winding 6 and the teeth 4 . That is, the winding 6 is wound around the trunk portion 41 via the insulator 5 .
　（７）絶縁シート
　絶縁シート７は、電気絶縁性を有する。絶縁シート７は、例えば、絶縁紙又は樹脂シートである。絶縁シート７は、インシュレータ５よりも変形しやすい。絶縁シート７は、スロットＳＴ１に配置されている。絶縁シート７の一部は、ティース４とインシュレータ５との間に挟まれている。 (7) Insulating Sheet The insulating sheet 7 has electrical insulation. The insulating sheet 7 is, for example, insulating paper or a resin sheet. The insulating sheet 7 deforms more easily than the insulator 5 . The insulating sheet 7 is arranged in the slot ST1. A portion of the insulating sheet 7 is sandwiched between the teeth 4 and the insulator 5 .
　図１、図４に示すように、絶縁シート７は、第１部分７１と、第２部分８と、第３部分９と、を含む。絶縁シート７は、例えば、平面形状に製造されて、絶縁シート７を折り曲げることで、折り目を境界として、第１部分７１と、第２部分８と、第３部分９と、の区別が生じる。絶縁シート７の各部位の厚さ方向は、軸方向Ｄ３と交差する。 As shown in FIGS. 1 and 4, the insulating sheet 7 includes a first portion 71, a second portion 8 and a third portion 9. The insulating sheet 7 is manufactured in a planar shape, for example, and by folding the insulating sheet 7, the first portion 71, the second portion 8, and the third portion 9 are distinguished from each other along the fold lines. The thickness direction of each portion of the insulating sheet 7 intersects with the axial direction D3.
　第１部分７１は、ティース４とインシュレータ５との間に挟まれている。より詳細には、第１部分７１は、ティース４と巻線６との間に配置されている。さらに、インシュレータ５は、巻線６と第１部分７１との間に配置されている。 The first portion 71 is sandwiched between the tooth 4 and the insulator 5 . More specifically, first portion 71 is arranged between tooth 4 and winding 6 . Furthermore, the insulator 5 is arranged between the winding 6 and the first portion 71 .
　第１部分７１は、中間部７１１と、外側部７１２と、内側部７１３と、を有する。中間部７１１の外側の端に、外側部７１２がつながっており、中間部７１１の内側の端に、内側部７１３がつながっている。中間部７１１は、ティース４の胴部４１に接触している。外側部７１２は、ティース４の外突部４２に接触している。内側部７１３は、ティース４の内突部４３に接触している。 The first portion 71 has an intermediate portion 711 , an outer portion 712 and an inner portion 713 . The outer end of the intermediate portion 711 is connected to the outer portion 712 , and the inner end of the intermediate portion 711 is connected to the inner portion 713 . The intermediate portion 711 is in contact with the trunk portion 41 of the tooth 4 . The outer portion 712 is in contact with the outer protrusion 42 of the tooth 4 . The inner portion 713 is in contact with the inner protrusion 43 of the tooth 4 .
　第２部分８は、外側部７１２につながっている。すなわち、第２部分８は、ティース４の胴部４１より離れた位置において第１部分７１につながっている。第２部分８は、巻線６の一部を覆う。より詳細には、第２部分８は、巻線６のうち胴部４１より離れた領域で、かつ外突部４２に近い領域を覆う。巻線６は、第２部分８と中間部７１１との間に配置されている。つまり、巻線６は、第２部分８と胴部４１との間に配置されている。 The second portion 8 is connected to the outer portion 712. That is, the second portion 8 is connected to the first portion 71 at a position apart from the trunk portion 41 of the tooth 4 . The second part 8 covers part of the winding 6 . More specifically, the second portion 8 covers a region of the winding 6 that is distant from the body portion 41 and close to the outer protrusion 42 . Winding 6 is arranged between second portion 8 and intermediate portion 711 . That is, the winding 6 is arranged between the second portion 8 and the body portion 41 .
　第３部分９は、内側部７１３につながっている。すなわち、第３部分９は、径方向Ｄ２におけるティース４の胴部４１より離れた位置において第１部分７１につながっている。第３部分９は、巻線６の一部を覆う。より詳細には、第３部分９は、巻線６のうち胴部４１より離れた位置で、かつ内突部４３に近い領域を覆う。巻線６は、第３部分９と中間部７１１との間に配置されている。つまり、巻線６は、第３部分９と胴部４１との間に配置されている。 The third portion 9 is connected to the inner portion 713. That is, the third portion 9 is connected to the first portion 71 at a position apart from the body portion 41 of the tooth 4 in the radial direction D2. A third portion 9 covers part of the winding 6 . More specifically, the third portion 9 covers a region of the winding 6 that is distant from the body portion 41 and close to the inner protrusion 43 . Winding 6 is arranged between third portion 9 and intermediate portion 711 . That is, the winding 6 is arranged between the third portion 9 and the body portion 41 .
　互いに隣り合う２つのティースブロックＴＢ１の２つの巻線６の間には、各々のティースブロックＴＢ１の絶縁シート７の第２部分８及び第３部分９が配置されている。これにより、２つのティースブロックＴＢ１のいずれも絶縁シート７を有していない場合と比較して、２つの巻線６の間の電気絶縁性が高まる。 A second portion 8 and a third portion 9 of the insulating sheet 7 of each tooth block TB1 are arranged between two windings 6 of two tooth blocks TB1 adjacent to each other. This increases the electrical insulation between the two windings 6 compared to the case where neither of the two tooth blocks TB1 has the insulating sheet 7 .
　複数のティースブロックＴＢ１の各々は、巻線６が設けられた領域において、周方向Ｄ１に隣り合うティースブロックＴＢ１に接触している。より詳細には、複数のティースブロックＴＢ１の各々は、スロットＳＴ１内において、周方向Ｄ１に隣り合うティースブロックＴＢ１に接触している。更に詳細には、周方向Ｄ１に互いに隣り合う２つのティースブロックＴＢ１は、絶縁シート７の第２部分８及び第３部分９において互いに接触している。 Each of the plurality of tooth blocks TB1 is in contact with adjacent tooth blocks TB1 in the circumferential direction D1 in the region where the windings 6 are provided. More specifically, each of the plurality of tooth blocks TB1 is in contact with adjacent tooth blocks TB1 in the circumferential direction D1 within the slot ST1. More specifically, two tooth blocks TB1 adjacent to each other in the circumferential direction D1 are in contact with each other at the second portion 8 and the third portion 9 of the insulating sheet 7 .
　互いに隣り合う２つのティースブロックＴＢ１は、外突部４２において互いに結合される。これにより、巻線６が設けられた領域において互いに接触し、各々のティースブロックＴＢ１の巻線６に圧力が加えられる。この圧力により、インシュレータ５が変形しようとする可能性がある。場合によっては、この圧力により、インシュレータ５が損傷する可能性もある。 Two tooth blocks TB1 adjacent to each other are joined to each other at the outer protrusions 42 . As a result, the regions where the windings 6 are provided come into contact with each other, and pressure is applied to the windings 6 of each tooth block TB1. This pressure may cause the insulator 5 to deform. In some cases, this pressure may damage the insulator 5 .
　しかしながら、本実施形態のインシュレータ５とティース４とは、第１嵌合部Ｇ１及び第２嵌合部Ｐ１において嵌合しており、第１嵌合部Ｇ１及び第２嵌合部Ｐ１が無い場合と比較して、インシュレータ５とティース４との接触面積が大きい。そのため、インシュレータ５に加えられた圧力がティース４に分散されやすく、これにより、インシュレータ５に作用する圧力を緩和させることができる。その結果、インシュレータ５が損傷する可能性、及び、損傷の前段階の異常が発生する可能性を低減させることができる。 However, the insulator 5 and the teeth 4 of the present embodiment are fitted at the first fitting portion G1 and the second fitting portion P1, and when the first fitting portion G1 and the second fitting portion P1 are not provided, , the contact area between the insulator 5 and the teeth 4 is large. Therefore, the pressure applied to the insulator 5 is easily distributed to the teeth 4 , thereby reducing the pressure acting on the insulator 5 . As a result, it is possible to reduce the possibility of damage to the insulator 5 and the possibility of occurrence of an abnormality in the pre-stage of damage.
　（８）モールド部材
　スロットＳＴ１には、巻線６をモールドするモールド部材Ｍ１が設けられていることが好ましい。すなわち、複数のティースブロックＴＢ１の各々は、巻線６をモールドするモールド部材Ｍ１を更に有することが好ましい。モールド部材Ｍ１は、熱伝導性を有する。モールド部材Ｍ１は、例えば、液状の合成樹脂等のモールド材を固化することで形成される。図１では、モールド部材Ｍ１にドットを付して図示している。図１に示すように、モールド部材Ｍ１は、少なくとも巻線６と絶縁シート７の第２部分８との間、及び、巻線６と絶縁シート７の第３部分９との間に設けられていることが好ましい。 (8) Molding member It is preferable that the slot ST1 is provided with a molding member M1 for molding the windings 6 . That is, each of the plurality of tooth blocks TB1 preferably further has a molding member M1 for molding the windings 6. As shown in FIG. Mold member M1 has thermal conductivity. The molding member M1 is formed, for example, by solidifying a molding material such as a liquid synthetic resin. In FIG. 1, the mold member M1 is illustrated with dots. As shown in FIG. 1, the molding member M1 is provided at least between the winding 6 and the second portion 8 of the insulating sheet 7 and between the winding 6 and the third portion 9 of the insulating sheet 7. preferably.
　ティースブロックＴＢ１がモールド部材Ｍ１を有することにより、巻線６で発生する熱を、モールド部材Ｍ１を介してティース４へ逃がすことができる。 Since the tooth block TB1 has the mold member M1, heat generated in the windings 6 can be released to the teeth 4 via the mold member M1.
　（実施形態１の第一変形例）
　以下、実施形態１の第一変形例に係るステータ３Ａについて、図５を用いて説明する。図５は、第一変形例に係るステータ３Ａの要部の正断面図である。実施形態１と同様の構成については、同一の符号を付して説明を省略する。 (First modification of Embodiment 1)
A stator 3A according to a first modification of the first embodiment will be described below with reference to FIG. FIG. 5 is a front cross-sectional view of main parts of a stator 3A according to a first modified example. Configurations similar to those of the first embodiment are denoted by the same reference numerals, and descriptions thereof are omitted.
　本第一変形例のステータ３Ａは、インシュレータ５の各々の第１嵌合部Ｇ１の形状において上述の実施形態１と相違する。すなわち、本第一変形例において、第１嵌合部Ｇ１の断面形状は、三角形状である。より詳細には、軸方向Ｄ３と直交する断面における第１嵌合部Ｇ１の形状は、三角形状である。第１嵌合部Ｇ１は、軸方向Ｄ３に延びている。 The stator 3A of this first modified example differs from the above-described first embodiment in the shape of each first fitting portion G1 of the insulator 5 . That is, in the first modified example, the cross-sectional shape of the first fitting portion G1 is triangular. More specifically, the shape of the first fitting portion G1 in a cross section orthogonal to the axial direction D3 is triangular. The first fitting portion G1 extends in the axial direction D3.
　さらに、本第一変形例のステータ３Ａは、ティース４の各々の第２嵌合部Ｐ１の形状において上述の実施形態１と相違する。第２嵌合部Ｐ１の形状は、第１嵌合部Ｇ１に沿った形状である。すなわち、本第一変形例において、第２嵌合部Ｐ１の断面形状は、三角形状である。より詳細には、軸方向Ｄ３と直交する断面における第２嵌合部Ｐ１の形状は、三角形状である。第２嵌合部Ｐ１は、軸方向Ｄ３に延びている。 Furthermore, the stator 3A of this first modified example differs from the above-described first embodiment in the shape of the second fitting portions P1 of the teeth 4 . The shape of the second fitting portion P1 is a shape along the first fitting portion G1. That is, in the first modified example, the cross-sectional shape of the second fitting portion P1 is triangular. More specifically, the shape of the second fitting portion P1 in a cross section perpendicular to the axial direction D3 is triangular. The second fitting portion P1 extends in the axial direction D3.
　本第一変形例でも、上述の実施形態１と同様に、インシュレータ５は、圧力を緩和することができ、これにより、損傷の可能性を低減できる。 In this first modified example, similarly to the first embodiment described above, the insulator 5 can relieve the pressure, thereby reducing the possibility of damage.
　（実施形態１の第二変形例）
　以下、実施形態１の第二変形例に係るステータ３Ｂについて、図６を用いて説明する。図６は、第二変形例に係るステータ３Ｂの要部の正断面図である。実施形態１と同様の構成については、同一の符号を付して説明を省略する。 (Second Modification of Embodiment 1)
A stator 3B according to a second modification of the first embodiment will be described below with reference to FIG. FIG. 6 is a front cross-sectional view of main parts of a stator 3B according to a second modification. Configurations similar to those of the first embodiment are denoted by the same reference numerals, and descriptions thereof are omitted.
　本第二変形例のステータ３Ｂは、インシュレータ５の各々の第１嵌合部Ｇ１の形状において上述の実施形態１と相違する。すなわち、本第二変形例において、第１嵌合部Ｇ１の断面形状は、台形状である。より詳細には、軸方向Ｄ３と直交する断面における第１嵌合部Ｇ１の形状は、台形状である。第１嵌合部Ｇ１は、軸方向Ｄ３に延びている。 The stator 3B of this second modified example differs from the above-described first embodiment in the shape of each first fitting portion G1 of the insulator 5 . That is, in the second modified example, the cross-sectional shape of the first fitting portion G1 is trapezoidal. More specifically, the shape of the first fitting portion G1 in a cross section orthogonal to the axial direction D3 is trapezoidal. The first fitting portion G1 extends in the axial direction D3.
　さらに、本第一変形例のステータ３Ｂは、ティース４の各々の第２嵌合部Ｐ１の形状において上述の実施形態１と相違する。第２嵌合部Ｐ１の形状は、第１嵌合部Ｇ１に沿った形状である。すなわち、本第一変形例において、第２嵌合部Ｐ１の断面形状は、台形状である。より詳細には、軸方向Ｄ３と直交する断面における第２嵌合部Ｐ１の形状は、台形状である。第２嵌合部Ｐ１は、軸方向Ｄ３に延びている。 Furthermore, the stator 3B of this first modified example differs from the above-described first embodiment in the shape of the second fitting portions P1 of the teeth 4 . The shape of the second fitting portion P1 is a shape along the first fitting portion G1. That is, in the first modified example, the cross-sectional shape of the second fitting portion P1 is trapezoidal. More specifically, the shape of the second fitting portion P1 in a cross section orthogonal to the axial direction D3 is trapezoidal. The second fitting portion P1 extends in the axial direction D3.
　本第二変形例でも、上述の実施形態１と同様に、インシュレータ５は、圧力を緩和することができ、これにより、損傷の可能性を低減できる。 In the second modified example, similarly to the first embodiment described above, the insulator 5 can relieve the pressure, thereby reducing the possibility of damage.
　（実施形態１の第三変形例）
　以下の第三変形例では、第１嵌合部Ｇ１をいずれの領域に設けるかに関する変形例を列挙する。実施形態１と同様の構成については、同一の符号を付して説明を省略する。 (Third Modification of Embodiment 1)
In the following third modified example, modified examples regarding in which region the first fitting portion G1 is provided will be enumerated. Configurations similar to those of the first embodiment are denoted by the same reference numerals, and descriptions thereof are omitted.
　インシュレータ５において、第１嵌合部Ｇ１は、ティース４との全ての対向面５ｅに設けられていなくてもよい。つまり、第１嵌合部Ｇ１は、インシュレータ５の第１側部５１１、第２側部５１２、側片５２１、側片５２２、側片５３１、及び、側片５３２のうち１つ以上の構成に設けられていればよい。 In the insulator 5, the first fitting portions G1 may not be provided on all of the faces 5e facing the teeth 4. That is, the first fitting portion G1 is configured by one or more of the first side portion 511, the second side portion 512, the side piece 521, the side piece 522, the side piece 531, and the side piece 532 of the insulator 5. It is sufficient if it is provided.
　また、第１側部５１１、第２側部５１２、側片５２１、側片５２２、側片５３１、及び、側片５３２の各々において、第１嵌合部Ｇ１はティース４との対向面５ｅの全体に設けられていなくてもよい。例えば、第１側部５１１におけるティース４との対向面５ｅのうち、一部の領域にのみ、第１嵌合部Ｇ１が設けられていてもよい。また、第２側部５１２におけるティース４との対向面５ｅのうち、一部の領域にのみ、第１嵌合部Ｇ１が設けられていてもよい。 Also, in each of the first side portion 511, the second side portion 512, the side piece 521, the side piece 522, the side piece 531, and the side piece 532, the first fitting portion G1 is formed on the surface 5e facing the tooth 4. It does not have to be provided throughout. For example, the first fitting portion G1 may be provided only in a part of the surface 5e facing the tooth 4 in the first side portion 511. As shown in FIG. Further, the first fitting portion G1 may be provided only in a part of the surface 5e facing the tooth 4 in the second side portion 512. As shown in FIG.
　第１嵌合部Ｇ１は、少なくとも、インシュレータ５のうちクラック等の損傷が発生しやすい領域に設けられていることが好ましい。例えば、第１嵌合部Ｇ１は、少なくとも、第１側部５１１のうち側片５２１と隣接する領域に設けられていることが好ましい。第１嵌合部Ｇ１は、少なくとも、第１側部５１１のうち側片５３１と隣接する領域に設けられていることも好ましい。第１嵌合部Ｇ１は、少なくとも、側片５２１のうち第１側部５１１と隣接する領域に設けられていることも好ましい。第１嵌合部Ｇ１は、少なくとも、側片５３１のうち第１側部５１１と隣接する領域に設けられていることも好ましい。 It is preferable that the first fitting portion G1 is provided at least in a region of the insulator 5 where damage such as cracks is likely to occur. For example, the first fitting portion G1 is preferably provided at least in a region of the first side portion 511 adjacent to the side piece 521 . It is also preferable that the first fitting portion G1 is provided at least in a region of the first side portion 511 adjacent to the side piece 531 . It is also preferable that the first fitting portion G1 is provided at least in a region of the side piece 521 adjacent to the first side portion 511 . It is also preferable that the first fitting portion G1 is provided at least in a region of the side piece 531 adjacent to the first side portion 511 .
　また、第１嵌合部Ｇ１は、少なくとも、第２側部５１２のうち側片５２２と隣接する領域に設けられていることが好ましい。第１嵌合部Ｇ１は、少なくとも、第２側部５１２のうち側片５３２と隣接する領域に設けられていることも好ましい。第１嵌合部Ｇ１は、少なくとも、側片５２２のうち第２側部５１２と隣接する領域に設けられていることも好ましい。第１嵌合部Ｇ１は、少なくとも、側片５３２のうち第２側部５１２と隣接する領域に設けられていることも好ましい。 Moreover, it is preferable that the first fitting portion G1 be provided at least in a region of the second side portion 512 adjacent to the side piece 522 . It is also preferable that the first fitting portion G1 is provided at least in a region of the second side portion 512 adjacent to the side piece 532 . It is also preferable that the first fitting portion G1 is provided at least in a region of the side piece 522 adjacent to the second side portion 512 . It is also preferable that the first fitting portion G1 is provided at least in a region of the side piece 532 adjacent to the second side portion 512 .
　また、ティース４において、第２嵌合部Ｐ１は、第１嵌合部Ｇ１と対向する領域に設けられていればよい。第２嵌合部Ｐ１は、胴部４１、２つの外突部４２及び２つの内突部４３のうち、１つ以上の構成に設けられていればよい。 Also, in the tooth 4, the second fitting portion P1 may be provided in a region facing the first fitting portion G1. The second fitting portion P1 may be provided in one or more of the trunk portion 41, the two outer protrusions 42, and the two inner protrusions 43.
　（実施形態１のその他の変形例）
　以下、実施形態１のその他の変形例を列挙する。以下の変形例は、適宜組み合わせて実現されてもよい。また、以下の変形例は、上述の各変形例と適宜組み合わせて実現されてもよい。 (Other Modifications of Embodiment 1)
Other modifications of the first embodiment are listed below. The following modified examples may be implemented in combination as appropriate. Moreover, the following modifications may be realized by appropriately combining with each of the modifications described above.
　第１嵌合部Ｇ１の個数は、複数個に限定されず、インシュレータ５には、１つ以上の第１嵌合部Ｇ１が設けられていればよい。 The number of first fitting portions G1 is not limited to a plurality, as long as the insulator 5 is provided with one or more first fitting portions G1.
　第２嵌合部Ｐ１の個数は、複数個に限定されず、ティース４には、１つ以上の第２嵌合部Ｐ１が設けられていればよい。 The number of second fitting portions P1 is not limited to a plurality, and the teeth 4 may be provided with one or more second fitting portions P1.
　第１嵌合部Ｇ１の個数と第２嵌合部Ｐ１の個数とが一致していることは必須ではない。 It is not essential that the number of first fitting portions G1 and the number of second fitting portions P1 match.
　複数の第１嵌合部Ｇ１がそれぞれ凸部であって、複数の第２嵌合部Ｐ１がそれぞれ凹部であってもよい。あるいは、複数の第１嵌合部Ｇ１及び複数の第２嵌合部Ｐ１がそれぞれ、凸部と凹部との組み合わせであってもよい。また、モールド部材Ｍ１の一部が、第１嵌合部Ｇ１又は第２嵌合部Ｐ１の凹部内に設けられていてもよい。 Each of the plurality of first fitting portions G1 may be a projection, and each of the plurality of second fitting portions P1 may be a recess. Alternatively, each of the plurality of first fitting portions G1 and the plurality of second fitting portions P1 may be a combination of a convex portion and a concave portion. Also, a part of the molding member M1 may be provided in the concave portion of the first fitting portion G1 or the second fitting portion P1.
　インシュレータ５の形状は、実施形態１で示した形状に限定されない。例えば、インシュレータ５は、第１部材と、第２部材と、を含み、軸方向Ｄ３の一方向（上）から第１部材がティース４の少なくとも一部を覆うように被せられ、軸方向Ｄ３の他方向（下）から第２部材がティース４の少なくとも一部を覆うように被せられてもよい。あるいは、インシュレータ５は、ティース４と一体成形されてもよい。 The shape of the insulator 5 is not limited to the shape shown in the first embodiment. For example, the insulator 5 includes a first member and a second member. The second member may cover at least a portion of the teeth 4 from the other direction (bottom). Alternatively, the insulator 5 may be integrally molded with the teeth 4 .
　絶縁シート７は、巻線６とインシュレータ５との間に配置されていてもよい。 The insulating sheet 7 may be arranged between the winding 6 and the insulator 5.
　ステータ３において、絶縁シート７は必須の構成ではない。 In the stator 3, the insulating sheet 7 is not an essential component.
　実施形態１では、ロータ２がステータ３の外側に配置されている。これに対して、ステータ３がロータ２の外側に配置されていてもよい。つまり、モータ１はインナーロータ型に限らず、アウターロータ型であってもよい。 In Embodiment 1, the rotor 2 is arranged outside the stator 3 . Alternatively, the stator 3 may be arranged outside the rotor 2 . In other words, the motor 1 is not limited to the inner rotor type, and may be of the outer rotor type.
　複数のティースブロックＴＢ１が個別に製造されてから結合されることは必須ではない。例えば、複数のティースブロックＴＢ１が全体としてＣ字状に並ぶように製造されてから、両端のティースブロックＴＢ１が結合されることで、複数のティースブロックＴＢ１が環状に並ぶように製造されてもよい。 It is not essential that multiple tooth blocks TB1 are individually manufactured and then combined. For example, a plurality of tooth blocks TB1 may be manufactured so as to be arranged in a C-shape as a whole, and then the tooth blocks TB1 at both ends may be joined together to manufacture a plurality of tooth blocks TB1 so as to be arranged in an annular shape. .
　ティースブロックＴＢ１の個数は、９つに限定されない。また、ティース４の形状は、適宜変更が可能である。 The number of tooth blocks TB1 is not limited to nine. Also, the shape of the teeth 4 can be changed as appropriate.
　互いに隣り合う２つのティースブロックＴＢ１の、互いに対向する内突部４３が、互いに結合されていてもよい。互いに隣り合う２つのティースブロックＴＢ１は、外突部４２及び内突部４３のうち少なくとも一方において結合されていればよい。あるいは、複数のティースブロックＴＢ１の内周面又は外周面に、複数のティースブロックＴＢ１を保持する保持部材を設けてもよい。 The mutually facing inner protrusions 43 of two tooth blocks TB1 adjacent to each other may be coupled to each other. Two teeth blocks TB1 adjacent to each other need only be joined at least one of the outer projection 42 and the inner projection 43 . Alternatively, a holding member for holding the plurality of tooth blocks TB1 may be provided on the inner peripheral surface or the outer peripheral surface of the plurality of tooth blocks TB1.
　ティース４は、２つの内突部４３を有していなくてもよい。 The tooth 4 does not have to have the two inner protrusions 43 .
　ステータ３は、発電機に備えられてもよい。 The stator 3 may be provided in the generator.
　（実施形態２）
　以下、実施形態２に係るステータ３について、図７を用いて説明する。図７は、実施形態２に係るステータ３のインシュレータ５を下方から見た斜視図である。実施形態１と同様の構成については、同一の符号を付して説明を省略する。なお、実施形態１の構成（変形例を含む）は、実施形態２に適宜適用されてもよい。 (Embodiment 2)
The stator 3 according to Embodiment 2 will be described below with reference to FIG. 7 . FIG. 7 is a bottom perspective view of the insulator 5 of the stator 3 according to the second embodiment. Configurations similar to those of the first embodiment are denoted by the same reference numerals, and descriptions thereof are omitted. Note that the configuration (including modifications) of the first embodiment may be applied to the second embodiment as appropriate.
　本実施形態のステータ３は、インシュレータ５Ｃの各々の第１嵌合部Ｇ１の配置及び形状に関して上述の実施形態１と相違する。すなわち、本実施形態において、インシュレータ５Ｃは、第１嵌合部Ｇ１を複数有し、平面視において、複数の第１嵌合部Ｇ１は、点在している。各々の第１嵌合部Ｇ１は、凹部である。 The stator 3 of this embodiment differs from the above-described first embodiment in terms of the arrangement and shape of each first fitting portion G1 of the insulator 5C. That is, in the present embodiment, the insulator 5C has a plurality of first fitting portions G1, and the plurality of first fitting portions G1 are scattered in plan view. Each first fitting portion G1 is a recess.
　より詳細には、第１側部５１１、第２側部５１２、側片５２１、側片５２２、側片５３１、及び、側片５３２の各々において、複数の第１嵌合部Ｇ１が点在している。平面視において、各々の第１嵌合部Ｇ１の形状は、円状である。軸方向Ｄ３と直交する断面における第１嵌合部Ｇ１の形状は、例えば、半円状である。各々の第１嵌合部Ｇ１の立体形状は、例えば、半球状である。 More specifically, each of the first side portion 511, the second side portion 512, the side piece 521, the side piece 522, the side piece 531, and the side piece 532 is dotted with a plurality of first fitting portions G1. ing. Planar view WHEREIN: The shape of each 1st fitting part G1 is circular. The shape of the first fitting portion G1 in a cross section orthogonal to the axial direction D3 is, for example, semicircular. The three-dimensional shape of each first fitting portion G1 is, for example, a hemispherical shape.
　さらに、本実施形態のステータ３は、ティース４の各々の第２嵌合部Ｐ１の配置及び形状に関して上述の実施形態１と相違する。複数の第２嵌合部Ｐ１は、複数の第１嵌合部Ｇ１と対向する位置に設けられている。すなわち、本実施形態において、ティース４は、第２嵌合部Ｐ１を複数有し、平面視において、複数の第２嵌合部Ｐ１は、点在している。各々の第２嵌合部Ｐ１の形状は、第１嵌合部Ｇ１に沿った形状である。各々の第２嵌合部Ｐ１は、凸部である。 Furthermore, the stator 3 of this embodiment differs from the first embodiment described above in terms of the arrangement and shape of the second fitting portions P1 of the teeth 4 . The plurality of second fitting portions P1 are provided at positions facing the plurality of first fitting portions G1. That is, in the present embodiment, the tooth 4 has a plurality of second fitting portions P1, and the plurality of second fitting portions P1 are scattered in plan view. The shape of each second fitting portion P1 is a shape along the first fitting portion G1. Each second fitting portion P1 is a convex portion.
　より詳細には、胴部４１、２つの外突部４２、及び２つの内突部４３の各々において、複数の第２嵌合部Ｐ１が点在している。平面視において、各々の第２嵌合部Ｐ１の形状は、円状である。軸方向Ｄ３と直交する断面における第２嵌合部Ｐ１の形状は、例えば、半円状である。各々の第２嵌合部Ｐ１の立体形状は、例えば、半球状である。 More specifically, a plurality of second fitting portions P1 are scattered in each of the body portion 41, the two outer protrusions 42, and the two inner protrusions 43. Planar view WHEREIN: The shape of each 2nd fitting part P1 is circular. The shape of the second fitting portion P1 in a cross section perpendicular to the axial direction D3 is, for example, semicircular. The three-dimensional shape of each second fitting portion P1 is, for example, a hemispherical shape.
　本実施形態でも、上述の実施形態１と同様に、インシュレータ５Ｃは、圧力を緩和することができ、これにより、損傷の可能性を低減できる。 Also in this embodiment, similarly to the first embodiment described above, the insulator 5C can relieve the pressure, thereby reducing the possibility of damage.
　（実施形態２の変形例）
　以下、実施形態２の変形例を列挙する。以下の変形例は、適宜組み合わせて実現されてもよい。また、以下の変形例は、実施形態１の各変形例と適宜組み合わせて実現されてもよい。 (Modification of Embodiment 2)
Modifications of the second embodiment are listed below. The following modified examples may be implemented in combination as appropriate. Further, the following modifications may be realized by appropriately combining with each modification of the first embodiment.
　第１嵌合部Ｇ１及び第２嵌合部Ｐ１の立体形状は、半球状に限定されず、例えば、円錐状、又は、円錐台状であってもよい。 The three-dimensional shape of the first fitting part G1 and the second fitting part P1 is not limited to a hemispherical shape, and may be, for example, a cone shape or a truncated cone shape.
　軸方向Ｄ３と直交する断面における第２嵌合部Ｐ１の形状は、半円状に限定されず、例えば、三角形状、又は、台形状であってもよい。 The shape of the second fitting portion P1 in the cross section orthogonal to the axial direction D3 is not limited to a semicircular shape, and may be triangular or trapezoidal, for example.
　複数の第１嵌合部Ｇ１がそれぞれ凸部であって、複数の第２嵌合部Ｐ１がそれぞれ凹部であってもよい。あるいは、複数の第１嵌合部Ｇ１及び複数の第２嵌合部Ｐ１がそれぞれ、凸部と凹部との組み合わせであってもよい。 Each of the plurality of first fitting portions G1 may be a projection, and each of the plurality of second fitting portions P1 may be a recess. Alternatively, each of the plurality of first fitting portions G1 and the plurality of second fitting portions P1 may be a combination of a convex portion and a concave portion.
　インシュレータ５Ｃにおいて、第１嵌合部Ｇ１は、ティース４との全ての対向面５ｅに設けられていなくてもよい。つまり、第１嵌合部Ｇ１は、インシュレータ５Ｃの第１側部５１１、第２側部５１２、側片５２１、側片５２２、側片５３１、及び、側片５３２のうち１つ以上の構成に設けられていればよい。 In the insulator 5C, the first fitting portion G1 does not have to be provided on all of the surfaces 5e facing the teeth 4. That is, the first fitting portion G1 is configured by one or more of the first side portion 511, the second side portion 512, the side piece 521, the side piece 522, the side piece 531, and the side piece 532 of the insulator 5C. It is sufficient if it is provided.
　また、ティース４において、第２嵌合部Ｐ１は、第１嵌合部Ｇ１と対向する領域に設けられていればよい。第２嵌合部Ｐ１は、胴部４１、２つの外突部４２及び２つの内突部４３のうち、１つ以上の構成に設けられていればよい。 Also, in the tooth 4, the second fitting portion P1 may be provided in a region facing the first fitting portion G1. The second fitting portion P1 may be provided in one or more of the trunk portion 41, the two outer protrusions 42, and the two inner protrusions 43.
　（まとめ）
　以上説明した実施形態等から、以下の態様が開示されている。 (summary)
The following aspects are disclosed from the embodiments and the like described above.
　第１の態様に係るステータ（３、３Ａ、３Ｂ）は、環状に並んだ複数のティースブロック（ＴＢ１）を備える。複数のティースブロック（ＴＢ１）の各々は、ティース（４）と、インシュレータ（５、５Ｃ）と、巻線（６）と、を有する。ティース（４）は、径方向（Ｄ２）に延びている。インシュレータ（５、５Ｃ）は、電気絶縁性を有する。インシュレータ（５、５Ｃ）は、ティース（４）の少なくとも一部を覆う。巻線（６）は、インシュレータ（５、５Ｃ）に巻かれている。インシュレータ（５、５Ｃ）は、ティース（４）との第１対向面（５ｅ）を含む。ティース（４）は、インシュレータ（５、５Ｃ）との第２対向面（４ｅ）を含む。インシュレータ（５、５Ｃ）は、第１対向面（５ｅ）に第１嵌合部（Ｇ１）を有する。ティース（４）は、第２対向面（４ｅ）に、第１嵌合部（Ｇ１）と嵌合する第２嵌合部（Ｐ１）を有する。 The stator (3, 3A, 3B) according to the first aspect includes a plurality of tooth blocks (TB1) arranged in a ring. Each of the plurality of tooth blocks (TB1) has teeth (4), insulators (5, 5C), and windings (6). Teeth (4) extend in the radial direction (D2). The insulators (5, 5C) have electrical insulation. Insulators (5, 5C) cover at least part of the teeth (4). A winding (6) is wound around an insulator (5, 5C). The insulator (5, 5C) includes a first opposing surface (5e) facing the teeth (4). Teeth (4) include second opposing surfaces (4e) facing insulators (5, 5C). The insulator (5, 5C) has a first fitting portion (G1) on the first opposing surface (5e). The tooth (4) has a second fitting portion (P1) that fits with the first fitting portion (G1) on the second opposing surface (4e).
　上記の構成によれば、第１嵌合部（Ｇ１）及び第２嵌合部（Ｐ１）が無い場合と比較して、インシュレータ（５、５Ｃ）とティース（４）との接触面積が大きい。そのため、インシュレータ（５、５Ｃ）に圧力が加えられた場合に圧力を緩和することができ、インシュレータ（５、５Ｃ）が損傷する可能性を低減できる。 According to the above configuration, the contact area between the insulators (5, 5C) and the teeth (4) is larger than when the first fitting portion (G1) and the second fitting portion (P1) are absent. Therefore, when pressure is applied to the insulators (5, 5C), the pressure can be relieved, and the possibility of damage to the insulators (5, 5C) can be reduced.
　また、第２の態様に係るステータ（３Ａ）では、第１の態様において、第１嵌合部（Ｇ１）の断面形状は、三角形状である。 In addition, in the stator (3A) according to the second aspect, in the first aspect, the cross-sectional shape of the first fitting portion (G1) is triangular.
　上記の構成によれば、インシュレータ（５、５Ｃ）とティース（４）とを嵌合させやすい。 According to the above configuration, it is easy to fit the insulators (5, 5C) and the teeth (4).
　また、第３の態様に係るステータ（３Ｂ）では、第１の態様において、第１嵌合部（Ｇ１）の断面形状は、台形状である。 In addition, in the stator (3B) according to the third aspect, in the first aspect, the cross-sectional shape of the first fitting portion (G1) is trapezoidal.
　上記の構成によれば、インシュレータ（５、５Ｃ）とティース（４）とを嵌合させやすい。 According to the above configuration, it is easy to fit the insulators (5, 5C) and the teeth (4).
　また、第４の態様に係るステータ（３）では、第１の態様において、第１嵌合部（Ｇ１）の断面形状は、半円状である。 Further, in the stator (3) according to the fourth aspect, in the first aspect, the cross-sectional shape of the first fitting portion (G1) is semicircular.
　上記の構成によれば、インシュレータ（５、５Ｃ）とティース（４）とを嵌合させやすい。 According to the above configuration, it is easy to fit the insulators (5, 5C) and the teeth (4).
　また、第５の態様に係るステータ（３、３Ａ、３Ｂ）では、第１～４の態様のいずれか１つにおいて、インシュレータ（５Ｃ）は、第１嵌合部（Ｇ１）を複数有する。平面視において、複数の第１嵌合部（Ｇ１）は、点在している。 Further, in the stator (3, 3A, 3B) according to the fifth aspect, in any one of the first to fourth aspects, the insulator (5C) has a plurality of first fitting portions (G1). Planar view WHEREIN: A some 1st fitting part (G1) is scattered.
　上記の構成によれば、インシュレータ（５Ｃ）とティース（４）とが位置ずれする可能性を低減できる。 According to the above configuration, the possibility of misalignment between the insulator (5C) and the teeth (4) can be reduced.
　また、第６の態様に係るステータ（３、３Ａ、３Ｂ）では、第１～４の態様のいずれか１つにおいて、第１嵌合部（Ｇ１）は、複数のティースブロック（ＴＢ１）が並ぶ周方向（Ｄ１）及び径方向（Ｄ２）の両方と直交する軸方向（Ｄ３）に延びている。 Further, in the stator (3, 3A, 3B) according to the sixth aspect, in any one of the first to fourth aspects, the first fitting portion (G1) is arranged with a plurality of tooth blocks (TB1). It extends in an axial direction (D3) perpendicular to both the circumferential direction (D1) and the radial direction (D2).
　上記の構成によれば、インシュレータ（５）とティース（４）とを嵌合させやすい。 According to the above configuration, it is easy to fit the insulator (5) and the teeth (4).
　また、第７の態様に係るステータ（３、３Ａ、３Ｂ）では、第１～６の態様のいずれか１つにおいて、第１嵌合部（Ｇ１）は、凹部である。第２嵌合部（Ｐ１）は、凸部である。 Further, in the stator (3, 3A, 3B) according to the seventh aspect, in any one of the first to sixth aspects, the first fitting portion (G1) is a concave portion. The second fitting portion (P1) is a convex portion.
　上記の構成によれば、ティース（４）が第２嵌合部（Ｐ１）において突出しているので、巻線（６）で発生する熱がティース（４）に伝達しやすい。そのため、巻線（６）の放熱効率を高められる。 According to the above configuration, since the teeth (4) protrude from the second fitting portion (P1), the heat generated in the windings (6) is easily transferred to the teeth (4). Therefore, the heat dissipation efficiency of the winding (6) can be enhanced.
　また、第８の態様に係るステータ（３、３Ａ、３Ｂ）では、第１～７の態様のいずれか１つにおいて、複数のティースブロック（ＴＢ１）の各々は、巻線（６）をモールドするモールド部材（Ｍ１）を更に有する。 Further, in the stator (3, 3A, 3B) according to the eighth aspect, in any one of the first to seventh aspects, each of the plurality of tooth blocks (TB1) molds the winding (6). It further comprises a mold member (M1).
　上記の構成によれば、巻線（６）は、モールド部材（Ｍ１）を介してティース（４）へ熱を逃がすことができる。すなわち、巻線（６）からティース（４）への放熱効率の向上を図ることができる。 According to the above configuration, the winding (6) can release heat to the teeth (4) via the mold member (M1). That is, it is possible to improve the efficiency of heat radiation from the windings (6) to the teeth (4).
　また、第９の態様に係るステータ（３、３Ａ、３Ｂ）では、第１～８の態様のいずれか１つにおいて、複数のティースブロック（ＴＢ１）の各々は、隣り合うティースブロック（ＴＢ１）に接触する。 Further, in the stator (3, 3A, 3B) according to the ninth aspect, in any one of the first to eighth aspects, each of the plurality of tooth blocks (TB1) is arranged in the adjacent tooth block (TB1). Contact.
　上記の構成によれば、インシュレータ（５、５Ｃ）が隣り合うティースブロック（ＴＢ１）から受ける圧力を、第１嵌合部（Ｇ１）及び第２嵌合部（Ｐ１）によって緩和することができる。 According to the above configuration, the pressure that the insulators (5, 5C) receive from the adjacent tooth blocks (TB1) can be relieved by the first fitting portion (G1) and the second fitting portion (P1).
　第１の態様以外の構成については、ステータ（３、３Ａ、３Ｂ）に必須の構成ではなく、適宜省略可能である。 Configurations other than the first aspect are not essential to the stator (3, 3A, 3B) and can be omitted as appropriate.
　また、第１０の態様に係るモータ（１）は、第１～９の態様のいずれか１つに係るステータ（３、３Ａ、３Ｂ）と、ロータ（２）と、を備える。ロータ（２）は、ロータシャフト（２１）を有する。ロータ（２）は、ステータ（３、３Ａ、３Ｂ）に対して回転する。 A motor (1) according to a tenth aspect includes a stator (3, 3A, 3B) according to any one of the first to ninth aspects, and a rotor (2). The rotor (2) has a rotor shaft (21). The rotor (2) rotates relative to the stator (3, 3A, 3B).
　上記の構成によれば、インシュレータ（５）が損傷する可能性を低減できる。 According to the above configuration, it is possible to reduce the possibility of damage to the insulator (5).
　本開示のステータ及びモータによれば、ステータが有するインシュレータが損傷する可能性を低減させることができる。このことにより、信頼性の高いステータ及びモータを得ることができる。すなわち、本開示のステータ及びモータは、産業上有用である。 According to the stator and motor of the present disclosure, it is possible to reduce the possibility of damage to the insulator of the stator. This makes it possible to obtain a highly reliable stator and motor. That is, the stator and motor of the present disclosure are industrially useful.
１　モータ
２　ロータ
３、３Ａ、３Ｂ　ステータ
４　ティース
５、５Ｃ　インシュレータ
６　巻線
２１　ロータシャフト
Ｄ１　周方向
Ｄ２　径方向
Ｄ３　軸方向
Ｇ１　第１嵌合部
Ｍ１　モールド部材
Ｐ１　第２嵌合部
ＴＢ１　ティースブロック 1 Motor 2 Rotors 3, 3A, 3B Stator 4 Teeth 5, 5C Insulator 6 Winding 21 Rotor shaft D1 Circumferential direction D2 Radial direction D3 Axial direction G1 First fitting portion M1 Mold member P1 Second fitting portion TB1 Teeth block

Claims (10)

  1. 　環状に並んだ複数のティースブロックを備え、
    　前記複数のティースブロックの各々は、
    　　径方向に延びたティースと、
    　　電気絶縁性を有し前記ティースの少なくとも一部を覆うインシュレータと、
    　　前記インシュレータに巻かれた巻線と、を有し、
    　前記インシュレータは、前記ティースとの第１対向面を含み、
    　前記ティースは、前記インシュレータとの第２対向面を含み、
    　前記インシュレータは、前記第１対向面に第１嵌合部を有し、
    　前記ティースは、前記第２対向面に、前記第１嵌合部と嵌合する第２嵌合部を有する、
    　ステータ。     Equipped with multiple teeth blocks arranged in a ring,
    each of the plurality of teeth blocks,
    radially extending teeth;
    an insulator having electrical insulation and covering at least a portion of the teeth;
    a winding wound around the insulator,
    The insulator includes a first facing surface facing the teeth,
    the teeth include a second surface facing the insulator,
    The insulator has a first fitting portion on the first opposing surface,
    The tooth has a second fitting portion that fits with the first fitting portion on the second facing surface,
    stator.
  2. 　前記第１嵌合部の断面形状は、三角形状である、
    　請求項１に記載のステータ。     The cross-sectional shape of the first fitting portion is triangular,
    A stator according to claim 1 .
  3. 　前記第１嵌合部の断面形状は、台形状である、
    　請求項１に記載のステータ。     The cross-sectional shape of the first fitting portion is trapezoidal,
    A stator according to claim 1 .
  4. 　前記第１嵌合部の断面形状は、半円状である、
    　請求項１に記載のステータ。     The cross-sectional shape of the first fitting portion is semicircular,
    A stator according to claim 1 .
  5. 　前記インシュレータは、前記第１嵌合部を複数有し、
    　平面視において、前記複数の第１嵌合部は、点在している、
    　請求項１～４のいずれか一項に記載のステータ。     The insulator has a plurality of the first fitting portions,
    In plan view, the plurality of first fitting portions are scattered,
    A stator according to any one of claims 1-4.
  6. 　前記第１嵌合部は、前記複数のティースブロックが並ぶ周方向及び前記径方向の両方と直交する軸方向に延びている、
    　請求項１～４のいずれか一項に記載のステータ。     The first fitting portion extends in an axial direction orthogonal to both the circumferential direction in which the plurality of tooth blocks are arranged and the radial direction.
    A stator according to any one of claims 1-4.
  7. 　前記第１嵌合部は、凹部であり、
    　前記第２嵌合部は、凸部である、
    　請求項１～６のいずれか一項に記載のステータ。     The first fitting portion is a concave portion,
    The second fitting portion is a convex portion,
    A stator according to any one of claims 1-6.
  8. 　前記複数のティースブロックの各々は、前記巻線をモールドするモールド部材を更に有する、
    　請求項１～７のいずれか一項に記載のステータ。     Each of the plurality of tooth blocks further has a molding member that molds the winding,
    A stator according to any one of claims 1-7.
  9. 　前記複数のティースブロックの各々は、隣り合うティースブロックに接触する、
    　請求項１～８のいずれか一項に記載のステータ。     each of the plurality of tooth blocks contacts adjacent tooth blocks;
    A stator according to any one of claims 1-8.
  10. 　請求項１～９のいずれか一項に記載のステータと、
    　ロータシャフトを有し、前記ステータに対して回転するロータと、を備える、
    　モータ。     a stator according to any one of claims 1 to 9;
    a rotor having a rotor shaft and rotating relative to the stator;
    motor.
PCT/JP2023/002167 2022-01-28 2023-01-25 Stator and motor WO2023145747A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2022-012415 2022-01-28
JP2022012415 2022-01-28

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010263675A (en) * 2009-04-30 2010-11-18 Mitsubishi Electric Corp Armature
JP5815163B1 (en) * 2014-08-01 2015-11-17 三菱電機株式会社 Electric motor stator
WO2016208555A1 (en) * 2015-06-25 2016-12-29 三菱電機株式会社 Stator of electric motor
JP2017017981A (en) * 2015-06-30 2017-01-19 エルジー イノテック カンパニー リミテッド Insulator and motor including the same
JP2019180166A (en) * 2018-03-30 2019-10-17 株式会社マキタ Electric working machine

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010263675A (en) * 2009-04-30 2010-11-18 Mitsubishi Electric Corp Armature
JP5815163B1 (en) * 2014-08-01 2015-11-17 三菱電機株式会社 Electric motor stator
WO2016208555A1 (en) * 2015-06-25 2016-12-29 三菱電機株式会社 Stator of electric motor
JP2017017981A (en) * 2015-06-30 2017-01-19 エルジー イノテック カンパニー リミテッド Insulator and motor including the same
JP2019180166A (en) * 2018-03-30 2019-10-17 株式会社マキタ Electric working machine

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