WO2022163342A1 - Motor, compressor, and refrigeration device - Google Patents

Motor, compressor, and refrigeration device Download PDF

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Publication number
WO2022163342A1
WO2022163342A1 PCT/JP2022/000615 JP2022000615W WO2022163342A1 WO 2022163342 A1 WO2022163342 A1 WO 2022163342A1 JP 2022000615 W JP2022000615 W JP 2022000615W WO 2022163342 A1 WO2022163342 A1 WO 2022163342A1
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WO
WIPO (PCT)
Prior art keywords
winding
shape
teeth
motor
slot
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PCT/JP2022/000615
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French (fr)
Japanese (ja)
Inventor
祥孝 奥山
峻介 清水
正樹 平野
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ダイキン工業株式会社
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Publication of WO2022163342A1 publication Critical patent/WO2022163342A1/en

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
    • H02K15/08—Forming windings by laying conductors into or around core parts
    • H02K15/085—Forming windings by laying conductors into or around core parts by laying conductors into slotted stators
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
    • H02K3/12—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors arranged in slots

Definitions

  • the present disclosure relates to motors, compressors, and refrigerators.
  • a motor is used as a drive source for air conditioners, refrigerators, etc.
  • a motor mainly includes a rotor and a stator.
  • a rotor type motor a plurality of teeth are provided in the inner peripheral direction of a stator core, and a winding is wound around each tooth. Windings are arranged in slots between teeth according to a predetermined rule.
  • a series winding method has been used in which a conductor wire is passed through a nozzle that is driven on the inner circumference side of the stator core, and the nozzle rotates and moves up and down in the axial direction to wind the wire in the slot.
  • a bobbin winding method has been used in which bobbin-wound coils are incorporated into teeth.
  • Patent Document 1 has a problem that it cannot be applied to a motor having an odd number of slots because it combines two types of coils whose cross-sectional shapes are different from each other and whose adjacent cross-sectional combinations match the slot shape.
  • An object of the present disclosure is to provide a motor capable of improving the space factor even when it has an odd number of slots (teeth).
  • a first aspect of the present disclosure is a stator core (13) in which a plurality of teeth (12) are integrally provided rotationally symmetrically in the inner peripheral direction, and a A motor with multiple windings (151, 152, 153, 154).
  • the plurality of windings (151, 152, 153, 154) includes a first winding (151), a second winding (152) and a third winding (153) having the same number of turns and different winding shapes.
  • the first winding (151) has a first shape on one side in the circumferential direction of the corresponding first tooth (12a) of the plurality of teeth (12), and The other side has a second shape substantially symmetrical to the first shape with the first tooth (12a) interposed therebetween.
  • the second winding (152) has a third shape on one side in the circumferential direction of the corresponding second tooth (12b) of the plurality of teeth (12), and The other side has a fourth shape substantially symmetrical to the third shape with the second teeth (12b) interposed therebetween.
  • the third winding (153) has a fifth shape substantially equal to the first shape on one side in the circumferential direction of the corresponding third tooth (12c) of the plurality of teeth (12).
  • a sixth shape substantially equal to the second shape is provided on the other circumferential side of the teeth (12c).
  • the fifth shape and the sixth shape fit together to constitute a shape that can be accommodated in the slots (14) between the plurality of teeth (12).
  • the inner peripheral width of the sixth shape is equal to or greater than the outer peripheral width of the sixth shape.
  • the lamination factor is improved by using three or more types of windings (151, 152, 153, 154) whose shapes are different from each other and whose combination of adjacent shapes matches the shape of the slot (14). Therefore, even when there are an odd number of slots (14), that is, an odd number of teeth (12), the space factor can be improved.
  • the inner peripheral width of the fifth shape is equal to or smaller than the outer peripheral width of the fifth shape.
  • the first winding (151) and the third winding (153) are placed in the slot (14) before the second winding (152) is placed in the slot (14). Also, a clearance can be ensured when the second winding (152) is inserted into the slot (14).
  • the plurality of teeth (12) are teeth without a flange on the inner peripheral side tip.
  • the plurality of windings (151, 152, 153, 154) can be easily inserted into the slots (14) from the inner peripheral side of the stator core (13).
  • the plurality of teeth (12) is an odd number of teeth.
  • the lamination factor can be improved in a motor having an odd number of teeth (12), that is, an odd number of slots (14).
  • the stator core (13) includes a substantially cylindrical back yoke portion on the outer peripheral side of the plurality of teeth (12). (11), and a portion of the coil end of the third winding (153) is arranged to pass over the axial end of the back yoke portion (11).
  • the third winding (153) has an asymmetrical shape on both sides in the circumferential direction with the third tooth (12c) interposed therebetween, the axial thickness of the coil end is less than that of the first winding (151). And since the conductor wire of the coil end is routed on the axial end of the back yoke portion (11) where the thickness tends to increase more than the second winding (152), an increase in the axial thickness of the coil end can be suppressed.
  • the plurality of windings are composed of wire rods containing at least aluminum.
  • the manufacturing cost of the motor can be reduced, and the weight of the motor can be reduced.
  • a seventh aspect of the present disclosure is any one of the first to sixth aspects, wherein the plurality of windings (151, 152, 153, 154) comprises the first winding (151) and the second winding (152). and a fourth winding (154) having the same number of turns as the third winding (153) but having a different winding shape.
  • the fourth winding (154) has a seventh shape substantially equal to the third shape on one side in the circumferential direction of the corresponding fourth tooth (12d) of the plurality of teeth (12).
  • the other circumferential side of the four teeth (12d) has an eighth shape substantially equal to the second shape.
  • the seventh shape and the eighth shape are fitted together to form a shape that can be accommodated in the slot (14).
  • the inner peripheral width of the seventh shape is equal to or greater than the outer peripheral width of the seventh shape.
  • the space factor of the motor can be improved by using the fourth winding (154) having a shape that is the reverse of the third winding (153) when viewed from the axial direction.
  • the inner peripheral width of the eighth shape is equal to or smaller than the outer peripheral width of the eighth shape.
  • the first winding (151), the third winding (153) and the fourth winding (154) are slotted before placing the second winding (152) in the slot (14). Even if it is arranged inside (14), it is possible to secure a clearance when inserting the second winding (152) into the slot (14).
  • a ninth aspect of the present disclosure is a compressor driven by the motor of any one of the first to eighth aspects.
  • a tenth aspect of the present disclosure is a refrigeration system comprising a compressor driven by the motor of any one of the first to eighth aspects.
  • FIG. 1 is a schematic diagram showing an example of a cross-sectional configuration of a motor according to Embodiment 1.
  • FIG. 2 is a schematic diagram showing a cross-sectional shape of windings in slots of the motor shown in FIG.
  • FIG. 3 is a schematic diagram showing a cross-sectional configuration of the motor shown in FIG. 1 during manufacturing.
  • FIG. 4 is a schematic diagram showing a cross-sectional configuration of the motor shown in FIG. 1 during manufacturing.
  • FIG. 5 is a schematic diagram showing a cross-sectional configuration of the motor shown in FIG. 1 during manufacturing.
  • 6 is a schematic diagram showing an example of a cross-sectional configuration of a motor according to a modification of Embodiment 1.
  • FIG. 7 is a schematic diagram showing a cross-sectional configuration of the motor shown in FIG. 6 during manufacturing.
  • FIG. 8 is a schematic diagram showing a cross-sectional configuration of the motor shown in FIG. 6 during manufacturing.
  • FIG. 9 is a schematic diagram showing a cross-sectional configuration of the motor shown in FIG. 6 during manufacturing.
  • FIG. 10 is a schematic diagram showing a cross-sectional configuration of the motor shown in FIG. 6 during manufacturing.
  • 11 is a schematic diagram showing a cross-sectional shape of the fourth winding in the slot of the motor according to Embodiment 2.
  • FIG. FIG. 12 is a schematic diagram showing an example of the cross-sectional configuration of the motor according to the second embodiment.
  • FIG. 13 is a schematic diagram showing an example of a cross-sectional configuration of a motor according to a modification of the second embodiment
  • FIG. 14 is a schematic configuration diagram of an air conditioner as an example of a refrigeration system including a compressor driven by a motor according to Embodiment 1.
  • FIG. 14 is a schematic configuration diagram of an air conditioner as an example of a refrigeration system including a compressor driven by a motor according to Embodiment 1.
  • the motor (10) mainly includes a stator core (13) and a rotor (17).
  • the stator core (13) is formed by fastening a laminate obtained by laminating a plurality of steel plates having a predetermined shape.
  • the stator core (13) includes a substantially cylindrical back yoke portion (11) and a plurality of (eg, nine) teeth (12).
  • the stator core (13) is fitted inside the casing (16).
  • the casing (16) is made of, for example, a pipe.
  • the rotor (17) is rotatably provided coaxially with the stator core (13) on the inner diameter side of the stator core (13). That is, the motor (10) is of the inner rotor type.
  • the motor (10) is, for example, a three-phase type in which three circumferentially continuous teeth (12) respectively form a U-phase, a V-phase and a W-phase.
  • substantially cylindrical means a shape that is generally recognized as a cylindrical shape, and it is not essential to be a mathematically strict “cylindrical".
  • a case where the outer circumference has unevenness is also “substantially cylindrical”. The unevenness may be caused, for example, by processing accuracy, processing method, or the like, or may be formed intentionally.
  • the axial direction, radial direction, and circumferential direction of the back yoke portion (11) may be simply referred to as axial direction, radial direction, and circumferential direction, respectively.
  • a plurality of teeth (12) are arranged rotationally symmetrically about the axis.
  • the back yoke portion (11) and the teeth (12) are integrally formed.
  • the back yoke portion (11) may be configured by combining a plurality of parts.
  • the teeth (12) protrude radially inward from the back yoke portion (11). That is, in the stator core (13), a plurality of teeth (12) are integrally provided rotationally symmetrically in the inner peripheral direction.
  • the plurality of teeth (12) may be straight teeth having a constant circumferential width from the inner peripheral side to the outer peripheral side, or may have a circumferential width that decreases from the outer peripheral side to the inner peripheral side. good.
  • the motor (10) further includes a plurality of windings (151, 152, 153) wound around each of the teeth (12).
  • the plurality of windings (151, 152, 153) and the stator core (13) are insulated by a resin member (not shown) such as PET, PBT, or PPS.
  • the plurality of windings (151, 152, 153) may be made of wire containing at least aluminum.
  • the conductor cross-sectional area of the wires forming the plurality of windings (151, 152, 153) is, for example, 0.05 mm 2 to 1.3 mm 2 .
  • the plurality of windings (151, 152, 153) are composed of a first winding (151), a second winding (152) and a third winding (153) having the same number of turns and different winding shapes.
  • the same number (for example, three) of the first windings (151), the second windings (152) and the third windings (153) are arranged.
  • Each of the first winding (151), the second winding (152) and the third winding (153) is, for example, a bobbin-wound coil in which the insulation member and the wire material are integrated, Alternatively, it may be an air-core coil made only of a wire without using an insulating member.
  • the wires may be fixed together using a self-bonding wire, or may be bonded.
  • the wires may be fixed to each other by applying an agent.
  • the slots (14) between the teeth (12) are occupied by the first winding (151), the second winding (152) and the third winding (153).
  • the plurality of teeth (12) are teeth without flanges on the tips of the inner peripheral side.
  • the ribless teeth may have, for example, the same tooth width from the outer peripheral side to the inner peripheral side, or the inner peripheral tooth width may be smaller than the outer peripheral tooth width.
  • a flange may be formed at the inner peripheral tip of the tooth (12) by, for example, bending.
  • the inner peripheral side of the tooth (12) may be provided with a protrusion capable of fixing the bobbin winding.
  • adhesion such as adhesive or varnish impregnation may be used.
  • the first winding (151) has a first shape on one side in the circumferential direction of the corresponding first tooth (12a) of the plurality of teeth (12), and the other side in the circumferential direction of the first tooth (12a). has a substantially symmetrical second shape across the first tooth (12a).
  • the portions (151a, 151b) of the first winding (151) arranged in the slots (14) on both sides in the circumferential direction of the first tooth (12a) have substantially symmetrical cross-sectional shapes when viewed in the axial direction. (see FIG. 2(a)).
  • the circumferential width of each portion (151a, 151b) of the first winding (151) may decrease from the outer circumference toward the inner circumference.
  • the circumferential widths of the portions (151a, 151b) of the first winding (151) may be the same from the outer circumference to the inner circumference.
  • the second winding (152) has a third shape on one side in the circumferential direction of the corresponding second tooth (12b) of the plurality of teeth (12), and the other side in the circumferential direction of the second tooth (12b). has a fourth shape substantially symmetrical to the third shape with the second tooth (12b) interposed therebetween.
  • the portions (152a, 152b) of the second winding (152) disposed in the slots (14) on both sides in the circumferential direction of the second tooth (12b) have substantially symmetrical cross-sectional shapes when viewed in the axial direction. (see FIG. 2(b)).
  • the circumferential widths of the portions (152a, 152b) of the second winding (152) may be the same from the outer circumference to the inner circumference.
  • the circumferential width of each portion (152a, 152b) of the second winding (152) may increase from the outer circumference toward the inner circumference.
  • the term “substantially symmetrical shape” is used in consideration of the difficulty of forming a winding having a strictly geometrically symmetrical shape across teeth using a normal winding technique. are used, these notations are intended to include substantially symmetrical shapes.
  • a shape that is deformed from the "symmetrical shape" within the range of unavoidable variations in shape due to processing accuracy in industrial production shall be included in the "substantially symmetrical shape”.
  • the third winding (153) has a fifth shape substantially equal to the first shape of the first winding (151) on one circumferential side of the corresponding third tooth (12c) of the plurality of teeth (12). have.
  • the third winding (153) has a sixth shape substantially equal to the fourth shape of the second winding (152) on the other circumferential side of the third tooth (12c).
  • the portion (153a) of the third winding (153) arranged in the slot (14) on one side in the circumferential direction of the third tooth (12c) corresponds to the first tooth ( 12a) has a shape substantially equal to that of the portion (151a) arranged in the slot (14) on one side in the circumferential direction (see FIGS. 2(a) and (c)).
  • the portion (153b) of the third winding (153) disposed in the slot (14) on the other side in the circumferential direction of the third tooth (12c) corresponds to the second tooth (12b) of the second winding (152). ) in the slot (14) on the other side in the circumferential direction (see FIGS. 2(b) and 2(c)).
  • the term “substantially equal shape” is used. Although the notation is used, these notations are intended to include substantially equivalent shapes. In addition, a shape that is deformed from the "equal shape” within the range of unavoidable shape variation due to the processing accuracy in industrial production shall be included in the "substantially equal shape”.
  • pre-formed coils that have been compression-formed may be used as the plurality of windings (151, 152, 153).
  • compression molded coils at least the first shape (portion (151a)) and the second shape (portion (151b)) of the first winding (151) and the fifth shape of the third winding (153). (Part (153a)) is compression molded.
  • concentrated winding is used as the winding method for the plurality of windings (151, 152, 153).
  • the fifth shape of the portion (153a) of the third winding (153) that is, the first shape of the portion (151a) of the first winding (151)
  • the third The sixth shape of the portion (153b) of the wire (153) that is, the fourth shape of the portion (152b) of the second winding (152) is fitted to each other to form a shape that can be accommodated in the slot (14).
  • the second shape of the portion (151b) of the first winding (151) and the third shape of the portion (152a) of the second winding (152) are fitted to each other to be accommodated in the slot (14).
  • each winding (151, 152, 153) in each slot (14) has an effective area of the slot (14) when viewed from the axial direction (insulating members, air gaps, and The area excluding the area of linear deformation, etc.). That is, the portions (“forward” winding and “returning” winding) of each winding (151, 152, 153) placed in each slot (14) on both sides of the corresponding tooth (12) have substantially the same area.
  • a part of the coil end of the third winding (153) may be arranged to pass over the axial end of the back yoke portion (11). Since the third winding (153) has an asymmetrical shape on both sides in the circumferential direction with the third tooth (12c) interposed therebetween, the crossover line is formed obliquely with respect to the circumferential direction on the third tooth (12c). Therefore, the conductors overlap and the axial thickness of the coil ends tends to increase more than those of the first winding (151) and the second winding (152). On the other hand, by routing the conductor wire of the coil end of the third winding (153) on the axial end of the back yoke portion (11), the increase in axial thickness of the coil end is suppressed and the resistance is reduced. can be reduced.
  • three first windings (151) are arranged for three first teeth (12a) out of nine teeth (12). Two other teeth (12) are interposed between the first teeth (12a).
  • the circumferential width of the portion of the first winding (151) located in the slot (14) decreases from the outer circumference toward the inner circumference.
  • three third windings (153) are arranged for three third teeth (12c) out of the nine teeth (12).
  • the third teeth (12c) are arranged on one circumferential side (the counterclockwise side in FIG. 4) of the first teeth (12a).
  • the circumferential width of the portion of the first winding (151) disposed in the same slot (14) as the third winding (153) decreases from the outer circumference to the inner circumference, while the width of the third winding
  • the circumferential width of the portion of the wire (153) placed in the same slot (14) as the first winding (151) is the same from the outer circumference to the inner circumference. Therefore, a clearance can be ensured when inserting the third winding (153) into the slot (14) in which the first winding (151) is arranged.
  • three second windings (152) are arranged for three second teeth (12b) out of the nine teeth (12).
  • the second teeth (12b) are arranged on the other circumferential side (the clockwise side in FIG. 5) of the first teeth (12a). In other words, the second teeth (12b) are arranged between the first teeth (12a) and the third teeth (12c).
  • the circumferential width of the portion of the first winding (151) disposed in the same slot (14) as the second winding (152) decreases from the outer circumference to the inner circumference
  • the circumferential width of the portion of the wire (152) located in the same slot (14) as the first winding (151) is the same from the outer circumference to the inner circumference. Therefore, a clearance can be ensured when inserting the second winding (152) into the slot (14) in which the first winding (151) is arranged.
  • the portions of the second winding (152) and the third winding (153) that are arranged in the same slot (14) are fitted to each other to form a shape that can be accommodated in the slot (14). do.
  • the circumferential width of the portion of the third winding (153) located in the same slot (14) as the second winding (152) decreases from the outer circumference to the inner circumference
  • the circumferential width of the portion of the wire (152) located in the same slot (14) as the third winding (153) is the same from the outer circumference to the inner circumference. Therefore, a clearance can be ensured when inserting the second winding (152) into the slot (14) in which the third winding (153) is arranged.
  • a motor (10) of the present embodiment includes a stator core (13) in which a plurality of teeth (12) are integrally provided rotationally symmetrically in the inner peripheral direction, and a and a plurality of windings (151, 152, 153).
  • the plurality of windings (151, 152, 153) are composed of a first winding (151), a second winding (152) and a third winding (153) having the same number of turns and different winding shapes.
  • the first winding (151) has a first shape on one side in the circumferential direction of the corresponding first tooth (12a) of the plurality of teeth (12), and the other side in the circumferential direction of the first tooth (12a).
  • the second winding (152) has a third shape on one side in the circumferential direction of the corresponding second tooth (12b) of the plurality of teeth (12), and the other side in the circumferential direction of the second tooth (12b). has a fourth shape substantially symmetrical to the third shape with the second tooth (12b) interposed therebetween.
  • the third winding (153) has a fifth shape substantially equal to the first shape of the first winding (151) on one circumferential side of the corresponding third tooth (12c) of the plurality of teeth (12). have.
  • the third winding (153) has a sixth shape substantially equal to the fourth shape of the second winding (152) on the other circumferential side of the third tooth (12c).
  • the fifth shape and the sixth shape fit together to form a shape that can be accommodated in the slots (14) between the teeth (12).
  • the inner peripheral width of the sixth shape is equal to or greater than the outer peripheral width of the sixth shape.
  • three types of windings (151, 152, 153) having different shapes and having a combination of adjacent shapes that match the shape of the slot (14) improve the space factor.
  • the cross-sectional shape (shape viewed from the axial direction) of the three types of windings (151, 152, 153) in the slot (14) is different from that of other windings, cores, and other members when they are inserted into the slot (14).
  • the shape (first shape) of the first tooth (12a) on one side in the circumferential direction of the first winding (151) and the circumferential direction of the second tooth (12a) of the second winding (152) Combining it with the shape on the other side of the direction (fourth shape) constitutes a shape that can be accommodated in the slot (14).
  • the third winding (153) has a fifth shape substantially equal to the first shape and a sixth shape substantially equal to the fourth shape on both circumferential sides of the third tooth (12c). Therefore, since the effective area of the slot (14) can be utilized without loss during winding, the space factor can be improved.
  • the motor (10) of the present embodiment since the same number of the three types of windings (151, 152, 153) are arranged, even if the motor (10) has an odd number of slots (14), that is, an odd number of teeth (12), the number of occupied It is possible to improve the product factor.
  • the motor (10) provided with nine slots (14) was illustrated, but other motors provided with an odd number of slots, such as fifteen or twenty-one slots, can be provided.
  • motors with an even number of slots eg 6 or 12, can be provided.
  • three types of windings (151, 152, 153) can be applied as molded coils in the stator core (13) integrally provided with the teeth (12), so that the teeth/core division can be achieved. It is possible to improve the space factor without increasing loss or complicating the process due to the above.
  • the first shape on one circumferential side of the first teeth (12a) in the first winding (151) (that is, the shape of the third teeth (12c) in the third winding (153)
  • the inner peripheral width may be equal to or smaller than the outer peripheral width.
  • the plurality of teeth (12) may be teeth (12) having no flanges at the tips on the inner peripheral side. By doing so, the plurality of windings (151, 152, 153) can be easily inserted into the slots (14) from the inner peripheral side of the stator core (13).
  • the plurality of teeth (12) may be an odd number of teeth. In this way, the space factor can be improved in the motor (10) having an odd number of teeth (12), that is, an odd number of slots (14).
  • the stator core (13) has a substantially cylindrical back yoke portion (11) on the outer peripheral side of the plurality of teeth (12). A portion of the coil end may be arranged to pass over the axial end of the back yoke portion (11).
  • the third winding (153) has an asymmetrical shape on both circumferential sides of the third tooth (12c), so that the axial thickness of the coil end is equal to that of the first winding (151). Since the conductor wire of the coil end is routed on the axial end portion of the back yoke portion (11) where the thickness tends to increase more than the second winding (152), an increase in the axial thickness of the coil end can be suppressed.
  • the plurality of windings (151, 152, 153) may be made of a wire containing at least aluminum. In this way, the manufacturing cost of the motor (10) can be reduced, and the weight of the motor (10) can be reduced.
  • the motor (20) of this modified example uses the same three types of windings (151, 152, 153) as the motor (10) of the first embodiment, but three types of windings ( 151, 152, 153).
  • the motor (20) of this modification for example, one first winding (151) and one second winding (152) are arranged, while seven third windings (153) are arranged. .
  • one first winding (151) is arranged for one first tooth (12a) of the nine teeth (12).
  • the circumferential width of the portion of the first winding (151) located in the slot (14) decreases from the outer circumference toward the inner circumference.
  • one third winding (153) is arranged for one third tooth (12c) of the nine teeth (12).
  • the third teeth (12c) are arranged on one circumferential side (the counterclockwise side in FIG. 8) of the first teeth (12a).
  • the circumferential width of the portion of the first winding (151) disposed in the same slot (14) as the third winding (153) decreases from the outer circumference to the inner circumference, while the width of the third winding
  • the circumferential width of the portion of the wire (153) placed in the same slot (14) as the first winding (151) is the same from the outer circumference to the inner circumference. Therefore, a clearance can be ensured when inserting the third winding (153) into the slot (14) in which the first winding (151) is arranged.
  • six third windings (153) are arranged for six third teeth (12c) out of the nine teeth (12).
  • six third teeth (12c) arranged continuously on one circumferential side (counterclockwise side in FIG. 9) of the third teeth (12c) arranged in the process shown in FIG. six third windings (153) are arranged in counterclockwise order.
  • the circumferential width of the third winding (153) arranged first decreases from the outer circumference toward the inner circumference, while the width of the third winding (153) arranged later becomes smaller from the outer circumference to the inner circumference.
  • the width in the circumferential direction is the same from the outer circumference to the inner circumference. Therefore, a clearance can be ensured when another third winding (153) is inserted into the slot (14) in which the third winding (153) was previously placed.
  • one second winding (152) is arranged for one second tooth (12b) of the nine teeth (12).
  • the second teeth (12b) are arranged on the other circumferential side (the clockwise side in FIG. 10) of the first teeth (12a). In other words, the second teeth (12b) are arranged between the first teeth (12a) and the third teeth (12c).
  • the circumferential width of the portion of the first winding (151) disposed in the same slot (14) as the second winding (152) decreases from the outer circumference to the inner circumference
  • the circumferential width of the portion of the wire (152) located in the same slot (14) as the first winding (151) is the same from the outer circumference to the inner circumference. Therefore, a clearance can be ensured when inserting the second winding (152) into the slot (14) in which the first winding (151) is arranged.
  • the portions of the second winding (152) and the third winding (153) that are arranged in the same slot (14) are fitted to each other to form a shape that can be accommodated in the slot (14). do.
  • the circumferential width of the portion of the third winding (153) located in the same slot (14) as the second winding (152) decreases from the outer circumference to the inner circumference
  • the circumferential width of the portion of the wire (152) located in the same slot (14) as the third winding (153) is the same from the outer circumference to the inner circumference. Therefore, a clearance can be ensured when inserting the second winding (152) into the slot (14) in which the third winding (153) is arranged.
  • the motor (20) of this modified example described above in addition to the same effects as the motor (10) of the first embodiment, the following effects can be obtained. That is, in the motor (10) of Embodiment 1, the same number of the three types of windings (151, 152, 153) are arranged, so it is possible to provide a motor having slots (teeth) that are a multiple of three. On the other hand, in the motor (20) of this modified example, the numbers of the three types of windings (151, 152, 153) arranged are not the same, so the number of slots (number of teeth) of the motor is not particularly limited.
  • the motor (20) of this modified example by increasing or decreasing the number of the third windings (153) that are continuously arranged in the circumferential direction, the motor (20) can have any number of slots (teeth) of three or more.
  • a motor can be provided.
  • the motor (10) of Embodiment 1 there are three types of windings (151, 152, 153), that is, the first winding (151), the second winding (152) and the second winding (152) shown in FIGS. Three windings (153) were used.
  • FIG. 12 shows a cross-sectional configuration example of the motor (30) of this embodiment using four types of windings (151, 152, 153, 154).
  • the same reference numerals are given to the same components as in the first embodiment shown in FIG.
  • the fourth winding (154) has the same number of turns as the first winding (151), the second winding (152) and the third winding (153) but has a different winding shape.
  • the fourth winding (154) may be, for example, a bobbin-wound coil in which the insulating member is wound and the insulating member and the wire rod are integrated, or an air-core coil using only the wire rod without using the insulating member. good.
  • the fourth winding (154) has a seventh shape substantially equal to the third shape of the second winding (152) on one circumferential side of the corresponding fourth tooth (12d) of the plurality of teeth (12). have.
  • the fourth winding (154) has an eighth shape substantially equal to the second shape of the first winding (151) on the other circumferential side of the fourth tooth (12d).
  • the portion (154a) of the fourth winding (154) arranged in the slot (14) on one side in the circumferential direction of the fourth tooth (12d) corresponds to the second tooth ( 12b) has a shape substantially equal to that of the portion (152a) arranged in the slot (14) on one side in the circumferential direction (see FIGS. 2(b) and 11).
  • the portion (154b) of the fourth winding (154) disposed in the slot (14) on the other side in the circumferential direction of the fourth tooth (12d) corresponds to the first tooth (12a) of the first winding (151). ) in the slot (14) on the other side in the circumferential direction (see FIGS. 2(a) and 11).
  • the inner width of the seventh shape of the portion (154a) of the fourth winding (154) is equivalent to the outer width of the seventh shape.
  • the inner peripheral width of the seventh shape may be larger than the outer peripheral width of the seventh shape.
  • the inner width of the eighth shape of the portion (154b) of the fourth winding (154) is smaller than the outer width of the eighth shape.
  • the inner peripheral width of the eighth shape may be equal to the outer peripheral width of the eighth shape.
  • a compression-molded coil may be used as the fourth winding (154).
  • at least the eighth shape (portion (154b)) of the fourth winding (154) is compression molded.
  • Concentrated winding is used as the winding method of the fourth winding (154).
  • a seventh shape of the portion (154a) of the fourth winding (154) (that is, a third shape of the portion (152a) of the second winding (152));
  • the eighth shape of the portion (154b) of the fourth winding (154) (that is, the second shape of the portion (151b) of the first winding (151) fits together and can be accommodated in the slot (14). form a shape.
  • each winding (151, 152, 153, 154) has an effective area of the slot (14) in each slot (14) when viewed from the axial direction (insulating member inevitable for winding arrangement). , the area excluding the area of voids, linear deformation, etc.). That is, the portions ("forward" winding and "returning” winding) of any winding (151, 152, 153, 154) placed in each slot (14) on both sides of the corresponding tooth (12) have substantially the same area.
  • a part of the coil end of the fourth winding (154) may be arranged to pass over the axial end of the back yoke portion (11). Since the fourth winding (154) has an asymmetric shape on both sides in the circumferential direction with the fourth tooth (12d) interposed therebetween, the crossover wire is formed obliquely with respect to the circumferential direction on the fourth tooth (12d). Therefore, the conductors overlap and the axial thickness of the coil ends tends to increase more than those of the first winding (151) and the second winding (152). On the other hand, by routing the conductor wire of the coil end of the fourth winding (154) on the axial end of the back yoke portion (11), the increase in axial thickness of the coil end is suppressed and the resistance is reduced. can be reduced.
  • the motor (10) of Embodiment 1 shown in FIG. 1 three first windings (151), three second windings (152), and three third windings (153) are arranged.
  • the motor (30) of the present embodiment has three first windings (151), three second windings (152), two third windings (153), and a fourth winding (153).
  • One line (154) is placed.
  • the third winding (153) and the first winding (153) are arranged in clockwise order on the two teeth (12) located between all the second windings (152).
  • a winding (151) was provided.
  • the two teeth (12) positioned between the pair of second windings (152) are provided with the first winding (151) and the second winding in clockwise order.
  • Four windings (154) are provided.
  • first, three first windings (151) are arranged for three first teeth (12a) out of nine teeth (12).
  • the circumferential width of the portion of the first winding (151) located in the slot (14) decreases from the outer circumference toward the inner circumference.
  • the two third windings (153) are attached to the third teeth (12c) located on one circumferential side (counterclockwise side in FIG. 12) of the two first windings (151). and one fourth winding (154 ).
  • the portions of the first winding (151) and the third winding (153) that are arranged in the same slot (14) are fitted to each other to form a shape that can be accommodated in the slot (14).
  • Configure. The circumferential width of the portion of the first winding (151) disposed in the same slot (14) as the third winding (153) decreases from the outer circumference to the inner circumference, while the width of the third winding.
  • the circumferential width of the portion of the wire (153) placed in the same slot (14) as the first winding (151) is the same from the outer circumference to the inner circumference. Therefore, a clearance can be ensured when inserting the third winding (153) into the slot (14) in which the first winding (151) is arranged.
  • the circumferential width of the portion of the first winding (151) disposed in the same slot (14) as the fourth winding (154) decreases from the outer circumference toward the inner circumference, while the width of the fourth winding.
  • the circumferential width of the portion of the wire (154) located in the same slot (14) as the first winding (151) is the same from the outer circumference to the inner circumference. Therefore, a clearance can be ensured when inserting the fourth winding (154) into the slot (14) in which the first winding (151) is arranged.
  • the three second windings (152) are arranged for the remaining three second teeth (12b).
  • the three second windings (152) are arranged at equal intervals in the circumferential direction, in other words, two windings of another type are interposed between the second windings (152). be.
  • the portions of the first winding (151) and the second winding (152) that are arranged in the same slot (14) are fitted to each other to form a shape that can be accommodated in the slot (14).
  • the circumferential width of the portion of the first winding (151) disposed in the same slot (14) as the second winding (152) decreases from the outer circumference to the inner circumference
  • the circumferential width of the portion of the wire (152) located in the same slot (14) as the first winding (151) is the same from the outer circumference to the inner circumference. Therefore, a clearance can be ensured when inserting the second winding (152) into the slot (14) in which the first winding (151) is arranged.
  • the portions of the second winding (152) and the third winding (153) that are arranged in the same slot (14) are fitted to each other to form a shape that can be accommodated in the slot (14). do.
  • the circumferential width of the portion of the third winding (153) located in the same slot (14) as the second winding (152) decreases from the outer circumference to the inner circumference
  • the circumferential width of the portion of the wire (152) located in the same slot (14) as the third winding (153) is the same from the outer circumference to the inner circumference. Therefore, a clearance can be ensured when inserting the second winding (152) into the slot (14) in which the third winding (153) is arranged.
  • the portions of the second winding (152) and the fourth winding (154) that are arranged in the same slot (14) are fitted to each other to form a shape that can be accommodated in the slot (14). do.
  • the circumferential width of the portion of the fourth winding (154) located in the same slot (14) as the second winding (152) decreases from the outer circumference to the inner circumference
  • the circumferential width of the portion of the wire (152) located in the same slot (14) as the fourth winding (154) is the same from the outer circumference to the inner circumference. Therefore, a clearance can be ensured when inserting the second winding (152) into the slot (14) in which the fourth winding (154) is arranged.
  • three second windings (152) are arranged at equal intervals in the circumferential direction.
  • two sets of combinations of the first winding (151) and the third winding (153) and one set of the combination of the first winding (151) and the fourth winding (154) are arranged.
  • one set of a combination of the first winding (151) and the third winding (153) is provided between the second windings (152) arranged at regular intervals in the circumferential direction,
  • two sets of combinations of the first winding (151) and the fourth winding (154) may be arranged.
  • the motor consists of three types of windings (151, 152, 154) including a first winding (151), a second winding (152) and a fourth winding (154).
  • the space factor is improved by using four types of windings (151, 152, 153, 154) whose shapes are different from each other and whose combinations of adjacent shapes match the shape of the slot (14). .
  • the cross-sectional shapes (shapes seen from the axial direction) of the four types of windings (151, 152, 153, 154) in the slot (14) are different from those of other windings, cores, and other members when they are inserted into the slot (14).
  • the shape (first shape) of the first tooth (12a) on one side in the circumferential direction of the first winding (151) and the circumferential direction of the second tooth (12a) of the second winding (152) Combining it with the shape on the other side of the direction (fourth shape) constitutes a shape that can be accommodated in the slot (14).
  • the third winding (153) has a fifth shape substantially equal to the first shape and a sixth shape substantially equal to the fourth shape on both circumferential sides of the third tooth (12c).
  • the fourth winding (154) has a seventh shape substantially equal to the third shape and an eighth shape substantially equal to the second shape on both sides in the circumferential direction of the fourth tooth (12d).
  • the effective area of the slot (14) can be utilized without loss during winding, so the space factor can be improved.
  • windings (151, 152, 153, 154) can be applied as formed coils in the stator core (13) integrally provided with the teeth (12), so that the teeth/core division can be achieved. It is possible to improve the space factor without increasing loss or complicating the process due to the above.
  • the inner peripheral width may be equal to or smaller than the outer peripheral width.
  • part of the coil ends of the fourth winding (154) may be arranged to pass over the axial end of the back yoke portion (11).
  • the fourth winding (154) has an asymmetrical shape on both sides in the circumferential direction with the fourth tooth (12d) interposed therebetween. Since the conductor wire of the coil end is routed on the axial end portion of the back yoke portion (11) where the thickness tends to increase more than the second winding (152), an increase in the axial thickness of the coil end can be suppressed.
  • the plurality of windings (151, 152, 153, 154) may be made of wire containing at least aluminum. In this way, the manufacturing cost of the motor (30) can be reduced, and the weight of the motor (30) can be reduced.
  • Embodiment 2 In the motor (30) of Embodiment 2, as shown in FIG. 12, four types of windings (151, 152, 153, 154) are used. Specifically, a plurality of second windings (152) are arranged at equal intervals in the circumferential direction with two other types of windings sandwiched therebetween, and the first winding is placed between the second windings (152). A combination of a wire (151) and a third winding (153) or a combination of a first winding (151) and a fourth winding (154) were arranged. This made it possible to provide motors with a multiple of three slots (14) (teeth (12)).
  • the motor (40) of this modified example uses the same four types of windings (151, 152, 153, 154) as the motor (30) of the second embodiment, but the first winding (151 ), the second winding (152), the third winding (153) and the fourth winding (154) are different from those of the second embodiment shown in FIG.
  • each of the first winding (151) and the second winding (152) is one
  • the third winding (153) is four
  • the fourth winding (154) is four.
  • one first winding (151) is arranged for one first tooth (12a) out of nine teeth (12).
  • the circumferential width of the portion of the first winding (151) located in the slot (14) decreases from the outer circumference toward the inner circumference.
  • the four third windings (153) are arranged for the four third teeth (12c) out of the nine teeth (12). Specifically, the four third teeth (12c) arranged in succession on one circumferential side (counterclockwise side in FIG. 13) of the first winding (151) arranged first are rotated in opposite directions. Four third windings (153) are sequentially arranged in clockwise order.
  • the portions of the first winding (151) and the third winding (153) that are arranged in the same slot (14) are fitted to each other to form a shape that can be accommodated in the slot (14).
  • Configure. The circumferential width of the portion of the first winding (151) disposed in the same slot (14) as the third winding (153) decreases from the outer circumference to the inner circumference, while the width of the third winding.
  • the circumferential width of the portion of the wire (153) placed in the same slot (14) as the first winding (151) is the same from the outer circumference to the inner circumference. Therefore, a clearance can be ensured when inserting the third winding (153) into the slot (14) in which the first winding (151) is arranged.
  • portions of the third windings (153) adjacent to each other, which are arranged in the same slot (14), are fitted to each other to form a shape that can be accommodated in the slot (14).
  • the circumferential width of the third winding (153) arranged first decreases from the outer circumference toward the inner circumference, while the width of the third winding (153) arranged later becomes smaller from the outer circumference to the inner circumference.
  • the width in the circumferential direction is the same from the outer circumference to the inner circumference. Therefore, a clearance can be ensured when another third winding (153) is inserted into the slot (14) in which the third winding (153) was previously placed.
  • three fourth windings (154) are arranged for three fourth teeth (12d) out of the nine teeth (12). Specifically, the three fourth teeth (12d) arranged continuously on the other circumferential side (the clockwise side in FIG. 13) of the first winding (151) arranged first are rotated clockwise. , the three fourth windings (154) are arranged in sequence.
  • the circumferential width of the portion of the first winding (151) disposed in the same slot (14) as the fourth winding (154) decreases from the outer circumference toward the inner circumference, while the width of the fourth winding
  • the circumferential width of the portion of the wire (154) located in the same slot (14) as the first winding (151) is the same from the outer circumference to the inner circumference. Therefore, a clearance can be ensured when inserting the fourth winding (154) into the slot (14) in which the first winding (151) is arranged.
  • portions of the fourth windings (154) adjacent to each other, which are arranged in the same slot (14), are fitted together to form a shape that can be accommodated in the slot (14).
  • the circumferential width of the fourth winding (154) arranged first decreases from the outer circumference to the inner circumference, while the width of the fourth winding (154) arranged later becomes smaller from the outer circumference to the inner circumference.
  • the width in the circumferential direction is the same from the outer circumference to the inner circumference. Therefore, it is possible to secure a clearance when another fourth winding (154) is inserted into the slot (14) in which the fourth winding (154) was previously arranged.
  • one A second winding (152) is arranged.
  • the portions of the second winding (152) and the third winding (153) which are arranged in the same slot (14) are fitted to each other to form a shape that can be accommodated in the slot (14).
  • the circumferential width of the portion of the third winding (153) located in the same slot (14) as the second winding (152) decreases from the outer circumference to the inner circumference
  • the circumferential width of the portion of the wire (152) located in the same slot (14) as the third winding (153) is the same from the outer circumference to the inner circumference. Therefore, a clearance can be ensured when inserting the second winding (152) into the slot (14) in which the third winding (153) is arranged.
  • the portions of the second winding (152) and the fourth winding (154) that are arranged in the same slot (14) are fitted to each other to form a shape that can be accommodated in the slot (14). do.
  • the circumferential width of the portion of the fourth winding (154) located in the same slot (14) as the second winding (152) decreases from the outer circumference to the inner circumference
  • the circumferential width of the portion of the wire (152) located in the same slot (14) as the fourth winding (154) is the same from the outer circumference to the inner circumference. Therefore, a clearance can be ensured when inserting the second winding (152) into the slot (14) in which the fourth winding (154) is arranged.
  • the motor (40) of this modified example described above in addition to the same effects as the motor (30) of the second embodiment, the following effects can be obtained. That is, in the motor (30) of the second embodiment, it is possible to provide a motor having slots (teeth) that are multiples of three. In contrast, in the motor (40) of this modified example, the number of slots (number of teeth) of the motor is not particularly limited. For example, in the motor (40) of this modified example, if the number of the third windings (153) or the fourth windings (154) arranged continuously in the circumferential direction is increased or decreased, four or more arbitrary windings can be arranged. It is possible to provide a motor with any number of slots (teeth).
  • the air conditioner (1) is a device that air-conditions the target space using a vapor compression refrigeration cycle.
  • An air conditioner (1) is capable of performing cooling operation, and mainly includes a compressor (2), a heat source side heat exchanger (3), an expansion mechanism (4), and a user side heat exchanger (5). and
  • the compressor (2) is, for example, a single-stage centrifugal compressor incorporating a single compression section.
  • the compressor (2) sucks the low-pressure refrigerant flowing through the suction pipe (6) through the suction port (2a) and compresses the refrigerant sucked through the suction port (2a) into high-pressure refrigerant. After that, it is discharged into the discharge pipe (7) through the discharge port (2b).
  • the suction pipe (6) is a refrigerant pipe that guides the refrigerant discharged from the user-side heat exchanger (5) to the suction side (suction port (2a)) of the compressor (2), and the discharge pipe (7). is a refrigerant pipe that guides the refrigerant discharged from the compression mechanism (2) through the discharge port (2b) to the inlet of the heat source side heat exchanger (3).
  • the compressor (2) mainly includes the motor (10) of Embodiment 1, a rotating shaft (2c), and a compression section (2d).
  • the motor (10), rotating shaft (2c), compression section (2d), etc. are housed in a casing (not shown).
  • the rotating shaft (2c) is supported by bearings (not shown).
  • the compression section (2d) is mainly composed of an impeller, to which the driving force of the motor (10) is transmitted from the rotating shaft (2c), and rotates around the rotating shaft (2c). As a result, the compression section (2) compresses the suctioned refrigerant flowing through the suction port (2a).
  • the heat source side heat exchanger (3) functions as a refrigerant radiator that dissipates heat from the refrigerant discharged from the compressor (2) by exchanging heat with water or air as a cooling source.
  • One end of the heat source side heat exchanger (3) is connected to a discharge port (2b) of the compressor (2) via a discharge pipe (7).
  • the other end of the heat source side heat exchanger (3) is connected to the expansion mechanism (4).
  • the expansion mechanism (4) is a mechanism that reduces the pressure of the refrigerant radiated by the heat source side heat exchanger (3), and is composed of, for example, an electric expansion valve. One end of the expansion mechanism (4) is connected to the heat source side heat exchanger (3). The other end of the expansion mechanism (4) is connected to the utilization side heat exchanger (5).
  • the user-side heat exchanger (5) functions as a refrigerant heater that heats the refrigerant decompressed by the expansion mechanism (4) by exchanging heat with water or air as a heating source.
  • One end of the utilization side heat exchanger (5) is connected to the expansion mechanism (4).
  • the other end of the utilization side heat exchanger (5) is connected to the suction port (2a) of the compression mechanism (2) through the suction pipe (6).
  • the compressor (2), the heat source side heat exchanger (3), the expansion mechanism (4), and the user side heat exchanger (5) are connected to the suction pipe (6 ) and a discharge pipe (7) to form a path (8) through which the refrigerant circulates.
  • the efficiency of the compressor (2) can be improved and the weight can be reduced. .
  • the motor (10) of Embodiment 1 is used as the motor for driving the compressor (2).
  • the motor (20) of the modified example of Embodiment 1 the motor (30) of Embodiment 2, or the motor (40) of the modified example of Embodiment 2 is used as the motor for driving the compressor.
  • the same effect as that of the present embodiment can be obtained even in the case of the present embodiment.
  • the present disclosure is useful for motors, compressors, and refrigerators.
  • Refrigeration equipment air conditioning equipment 2 compressor 10, 20, 30, 40 motor 11 back yoke portion 12 tooth 12a first tooth 12b second tooth 12c third tooth 12d fourth tooth 13 stator core 14 slot 151 first winding 152 second winding 153 third winding 154 fourth winding

Abstract

A motor (10) comprises three types of windings (151, 152, 153) that have the same number of turns and that have different winding shapes. A first winding (151) has a first and a second shape that are substantially symmetrical on both circumferential sides across a corresponding tooth (12). A second winding (152) has a third and a fourth shape that are substantially symmetrical on both circumferential sides across a corresponding tooth (12). A third winding (153) has, respectively on both circumferential sides of a corresponding tooth (12), a fifth shape that is substantially equal to the first shape, and a sixth shape that is substantially equal to the fourth shape. The fifth and sixth shapes mate with each other to form a shape that can be accommodated in a slot (14). The inner circumferential width of the sixth shape is equal to the outer circumferential width of the sixth shape or greater than said outer circumferential width.

Description

モータ、圧縮機、及び冷凍装置motors, compressors, and refrigerators
　本開示は、モータ、圧縮機、及び冷凍装置に関する。 The present disclosure relates to motors, compressors, and refrigerators.
　エアコンや冷蔵庫等の駆動源として、モータが使用されている。モータは、主として、回転子（ロータ）と、固定子（ステータ）とを備える。インナーロータ型のモータでは、固定子コアの内周方向に複数のティースが設けられ、各ティースに巻線が巻き回される。巻線は、ティース間のスロット内に所定の規則に従って配置される。 A motor is used as a drive source for air conditioners, refrigerators, etc. A motor mainly includes a rotor and a stator. In an inner rotor type motor, a plurality of teeth are provided in the inner peripheral direction of a stator core, and a winding is wound around each tooth. Windings are arranged in slots between teeth according to a predetermined rule.
　従来、巻線の方式として、固定子コアの内周側で駆動するノズルに導線を通し、ノズルの回転及び軸方向の上下動作によりスロットに巻線を施す直巻線方式が用いられてきた。また、スロット内の巻線密度（占積率）を高めてモータの高効率化及び軽量化を図るために、ボビン巻線したコイルをティースに組み込むボビン巻線方式が用いられてきた。 Conventionally, as a winding method, a series winding method has been used in which a conductor wire is passed through a nozzle that is driven on the inner circumference side of the stator core, and the nozzle rotates and moves up and down in the axial direction to wind the wire in the slot. Also, in order to increase the winding density (space factor) in the slot to increase the efficiency and reduce the weight of the motor, a bobbin winding method has been used in which bobbin-wound coils are incorporated into teeth.
　特許文献１のボビン巻線型モータでは、スロットに巻線を挿入する際のクリアランスを考慮して、断面形状が互いに異なり且つ隣り合う断面の組合せがスロット形状に適合する２種類のコイルを用いることによって、占積率を向上させている。 In the bobbin winding type motor of Patent Document 1, in consideration of the clearance when inserting the windings into the slots, two types of coils having different cross-sectional shapes and a combination of adjacent cross-sections that match the slot shape are used. , which improves the space factor.
特開２０００－４１３６５号公報JP-A-2000-41365
　しかしながら、特許文献１のモータでは、断面形状が互いに異なり且つ隣り合う断面の組合せがスロット形状に適合する２種類のコイルを組み合わせるため、奇数個のスロットを有するモータには適用できないという問題がある。 However, the motor of Patent Document 1 has a problem that it cannot be applied to a motor having an odd number of slots because it combines two types of coils whose cross-sectional shapes are different from each other and whose adjacent cross-sectional combinations match the slot shape.
　本開示の目的は、奇数個のスロット（ティース）を有する場合でも、占積率の向上が可能なモータを提供することである。 An object of the present disclosure is to provide a motor capable of improving the space factor even when it has an odd number of slots (teeth).
　本開示の第１の態様は、内周方向に複数のティース（12）が回転対称に一体に設けられた固定子コア（13）と、前記複数のティース（12）のそれぞれに巻き回された複数の巻線（151,152,153,154）とを備えたモータである。前記複数の巻線（151,152,153,154）は、巻数が同じで巻き形状が異なる第１巻線（151）、第２巻線（152）及び第３巻線（153）を含む。前記第１巻線（151）は、前記複数のティース（12）のうち対応する第１ティース（12a）の周方向一方側に第１形状を有すると共に、当該第１ティース（12a）の周方向他方側に当該第１ティース（12a）を挟んで前記第１形状と略対称な第２形状を有する。前記第２巻線（152）は、前記複数のティース（12）のうち対応する第２ティース（12b）の周方向一方側に第３形状を有すると共に、当該第２ティース（12b）の周方向他方側に当該第２ティース（12b）を挟んで前記第３形状と略対称な第４形状を有する。前記第３巻線（153）は、前記複数のティース（12）のうち対応する第３ティース（12c）の周方向一方側に、前記第１形状略等しい第５形状を有すると共に、前記第３ティース（12c）の周方向他方側に、前記第２形状と略等しい第６形状を有する。前記第５形状と前記第６形状とは互いに嵌合して、前記複数のティース（12）同士の間のスロット（14）に収納可能な形状を構成する。前記第６形状の内周側幅は、前記第６形状の外周側幅と同等か又は当該外周側幅よりも大きい。 A first aspect of the present disclosure is a stator core (13) in which a plurality of teeth (12) are integrally provided rotationally symmetrically in the inner peripheral direction, and a A motor with multiple windings (151, 152, 153, 154). The plurality of windings (151, 152, 153, 154) includes a first winding (151), a second winding (152) and a third winding (153) having the same number of turns and different winding shapes. The first winding (151) has a first shape on one side in the circumferential direction of the corresponding first tooth (12a) of the plurality of teeth (12), and The other side has a second shape substantially symmetrical to the first shape with the first tooth (12a) interposed therebetween. The second winding (152) has a third shape on one side in the circumferential direction of the corresponding second tooth (12b) of the plurality of teeth (12), and The other side has a fourth shape substantially symmetrical to the third shape with the second teeth (12b) interposed therebetween. The third winding (153) has a fifth shape substantially equal to the first shape on one side in the circumferential direction of the corresponding third tooth (12c) of the plurality of teeth (12). A sixth shape substantially equal to the second shape is provided on the other circumferential side of the teeth (12c). The fifth shape and the sixth shape fit together to constitute a shape that can be accommodated in the slots (14) between the plurality of teeth (12). The inner peripheral width of the sixth shape is equal to or greater than the outer peripheral width of the sixth shape.
　第１の態様では、形状が互いに異なり且つ隣り合う形状の組合せがスロット（14）の形状に適合する３種類以上の巻線（151,152,153,154）を用いることにより、占積率を向上させる。このため、奇数個のスロット（14）つまり奇数個のティース（12）を有する場合でも、占積率の向上が可能となる。 In the first aspect, the lamination factor is improved by using three or more types of windings (151, 152, 153, 154) whose shapes are different from each other and whose combination of adjacent shapes matches the shape of the slot (14). Therefore, even when there are an odd number of slots (14), that is, an odd number of teeth (12), the space factor can be improved.
　本開示の第２の態様は、第１の態様において、前記第５形状の内周側幅は、前記第５形状の外周側幅と同等か又は当該外周側幅よりも小さい。 According to a second aspect of the present disclosure, in the first aspect, the inner peripheral width of the fifth shape is equal to or smaller than the outer peripheral width of the fifth shape.
　第２の態様では、第２巻線（152）をスロット（14）内に配置する前に、第１巻線（151）や第３巻線（153）をスロット（14）内に配置しても、第２巻線（152）をスロット（14）内に挿入する際のクリアランスを確保することができる。 In a second aspect, the first winding (151) and the third winding (153) are placed in the slot (14) before the second winding (152) is placed in the slot (14). Also, a clearance can be ensured when the second winding (152) is inserted into the slot (14).
　本開示の第３の態様は、第１又は第２の態様において、前記複数のティース（12）は、内周側先端につばの無いティースである。 According to a third aspect of the present disclosure, in the first or second aspect, the plurality of teeth (12) are teeth without a flange on the inner peripheral side tip.
　第３の態様では、固定子コア（13）の内周側からスロット（14）内に複数の巻線（151,152,153,154）を容易に挿入することができる。 In the third aspect, the plurality of windings (151, 152, 153, 154) can be easily inserted into the slots (14) from the inner peripheral side of the stator core (13).
　本開示の第４の態様は、第１～第３の態様のいずれか１つにおいて、前記複数のティース（12）は、奇数個のティースである。 According to a fourth aspect of the present disclosure, in any one of the first to third aspects, the plurality of teeth (12) is an odd number of teeth.
　第４の態様では、奇数個のティース（12）つまり奇数個のスロット（14）を有するモータにおいて、占積率を向上させることができる。 In the fourth aspect, the lamination factor can be improved in a motor having an odd number of teeth (12), that is, an odd number of slots (14).
　本開示の第５の態様は、第１～第４の態様のいずれか１つにおいて、前期固定子コア（13）は、前記複数のティース（12）の外周側に略円筒状のバックヨーク部（11）を有し、前記第３巻線（153）のコイルエンドの一部は、前記バックヨーク部（11）の軸方向の端部上を通るように配置される。 In a fifth aspect of the present disclosure, in any one of the first to fourth aspects, the stator core (13) includes a substantially cylindrical back yoke portion on the outer peripheral side of the plurality of teeth (12). (11), and a portion of the coil end of the third winding (153) is arranged to pass over the axial end of the back yoke portion (11).
　第５の態様では、第３巻線（153）は、第３ティース（12c）を挟んで周方向両側に非対称な形状を有することから、コイルエンドの軸方向厚みが第１巻線（151）及び第２巻線（152）よりも増加しやすいところ、バックヨーク部（11）の軸方向端部上でコイルエンドの導線取り回しを行うので、コイルエンドの軸方向厚みの増加を抑制できる。 In the fifth aspect, since the third winding (153) has an asymmetrical shape on both sides in the circumferential direction with the third tooth (12c) interposed therebetween, the axial thickness of the coil end is less than that of the first winding (151). And since the conductor wire of the coil end is routed on the axial end of the back yoke portion (11) where the thickness tends to increase more than the second winding (152), an increase in the axial thickness of the coil end can be suppressed.
　本開示の第６の態様は、第１～第５の態様のいずれか１つにおいて、前記複数の巻線（151,152,153,154）は、少なくともアルミニウムを含む線材で構成される。 According to a sixth aspect of the present disclosure, in any one of the first to fifth aspects, the plurality of windings (151, 152, 153, 154) are composed of wire rods containing at least aluminum.
　第６の態様では、モータの製造コストを低減できると共に、モータを軽量化することができる。 In the sixth aspect, the manufacturing cost of the motor can be reduced, and the weight of the motor can be reduced.
　本開示の第７の態様は、第１～第６の態様のいずれか１つにおいて、前記複数の巻線（151,152,153,154）は、前記第１巻線（151）、前記第２巻線（152）及び前記第３巻線（153）と巻数が同じで巻き形状が異なる第４巻線（154）をさらに含む。前記第４巻線（154）は、前記複数のティース（12）のうち対応する第４ティース（12d）の周方向一方側に、前記第３形状と略等しい第７形状を有すると共に、前記第４ティース（12d）の周方向他方側に、前記第２形状と略等しい第８形状を有する。前記第７形状と前記第８形状とは互いに嵌合して、前記スロット（14）に収納可能な形状を構成する。前記第７形状の内周側幅は、前記第７形状の外周側幅と同等か又は当該外周側幅よりも大きい。 A seventh aspect of the present disclosure is any one of the first to sixth aspects, wherein the plurality of windings (151, 152, 153, 154) comprises the first winding (151) and the second winding (152). and a fourth winding (154) having the same number of turns as the third winding (153) but having a different winding shape. The fourth winding (154) has a seventh shape substantially equal to the third shape on one side in the circumferential direction of the corresponding fourth tooth (12d) of the plurality of teeth (12). The other circumferential side of the four teeth (12d) has an eighth shape substantially equal to the second shape. The seventh shape and the eighth shape are fitted together to form a shape that can be accommodated in the slot (14). The inner peripheral width of the seventh shape is equal to or greater than the outer peripheral width of the seventh shape.
　第７の態様では、軸方向から見て第３巻線（153）を反転した形状を持つ第４巻線（154）を用いて、モータの占積率を向上させることができる。 In the seventh aspect, the space factor of the motor can be improved by using the fourth winding (154) having a shape that is the reverse of the third winding (153) when viewed from the axial direction.
　本開示の第８の態様は、第７の態様において、前記第８形状の内周側幅は、前記第８形状の外周側幅と同等か又は当該外周側幅よりも小さい。 According to an eighth aspect of the present disclosure, in the seventh aspect, the inner peripheral width of the eighth shape is equal to or smaller than the outer peripheral width of the eighth shape.
　第８の態様では、第２巻線（152）をスロット（14）内に配置する前に、第１巻線（151）、第３巻線（153）及び第４巻線（154）をスロット（14）内に配置しても、第２巻線（152）をスロット（14）内に挿入する際のクリアランスを確保することができる。 In an eighth aspect, the first winding (151), the third winding (153) and the fourth winding (154) are slotted before placing the second winding (152) in the slot (14). Even if it is arranged inside (14), it is possible to secure a clearance when inserting the second winding (152) into the slot (14).
　本開示の第９の態様は、第１～第８の態様のいずれか１つのモータにより駆動される圧縮機である。 A ninth aspect of the present disclosure is a compressor driven by the motor of any one of the first to eighth aspects.
　第９の態様では、占積率を向上させたモータを用いるため、圧縮機の高効率化及び軽量化を図ることができる。 In the ninth aspect, since a motor with an improved space factor is used, it is possible to improve the efficiency and reduce the weight of the compressor.
　本開示の第１０の態様は、第１～第８の態様のいずれか１つのモータにより駆動される圧縮機を備える冷凍装置である。 A tenth aspect of the present disclosure is a refrigeration system comprising a compressor driven by the motor of any one of the first to eighth aspects.
　第１０の態様では、占積率を向上させたモータにより駆動される圧縮機を用いるため、冷凍装置の高効率化及び軽量化を図ることができる。 In the tenth aspect, since a compressor driven by a motor with an improved space factor is used, it is possible to improve the efficiency and reduce the weight of the refrigeration system.
図１は、実施形態１に係るモータの断面構成の一例を示す模式図である。FIG. 1 is a schematic diagram showing an example of a cross-sectional configuration of a motor according to Embodiment 1. FIG. 図２は、図１に示すモータのスロット内おける巻線の断面形状を示す模式図である。FIG. 2 is a schematic diagram showing a cross-sectional shape of windings in slots of the motor shown in FIG. 図３は、図１に示すモータの製造途中の断面構成を示す模式図である。FIG. 3 is a schematic diagram showing a cross-sectional configuration of the motor shown in FIG. 1 during manufacturing. 図４は、図１に示すモータの製造途中の断面構成を示す模式図である。FIG. 4 is a schematic diagram showing a cross-sectional configuration of the motor shown in FIG. 1 during manufacturing. 図５は、図１に示すモータの製造途中の断面構成を示す模式図である。FIG. 5 is a schematic diagram showing a cross-sectional configuration of the motor shown in FIG. 1 during manufacturing. 図６は、実施形態１の変形例に係るモータの断面構成の一例を示す模式図である。6 is a schematic diagram showing an example of a cross-sectional configuration of a motor according to a modification of Embodiment 1. FIG. 図７は、図６に示すモータの製造途中の断面構成を示す模式図である。FIG. 7 is a schematic diagram showing a cross-sectional configuration of the motor shown in FIG. 6 during manufacturing. 図８は、図６に示すモータの製造途中の断面構成を示す模式図である。FIG. 8 is a schematic diagram showing a cross-sectional configuration of the motor shown in FIG. 6 during manufacturing. 図９は、図６に示すモータの製造途中の断面構成を示す模式図である。FIG. 9 is a schematic diagram showing a cross-sectional configuration of the motor shown in FIG. 6 during manufacturing. 図１０は、図６に示すモータの製造途中の断面構成を示す模式図である。FIG. 10 is a schematic diagram showing a cross-sectional configuration of the motor shown in FIG. 6 during manufacturing. 図１１は、実施形態２に係るモータのスロット内おける第４巻線の断面形状を示す模式図である。11 is a schematic diagram showing a cross-sectional shape of the fourth winding in the slot of the motor according to Embodiment 2. FIG. 図１２は、実施形態２に係るモータの断面構成の一例を示す模式図である。FIG. 12 is a schematic diagram showing an example of the cross-sectional configuration of the motor according to the second embodiment. 図１３は、実施形態２の変形例に係るモータの断面構成の一例を示す模式図である。13 is a schematic diagram showing an example of a cross-sectional configuration of a motor according to a modification of the second embodiment; FIG. 図１４は、実施形態１に係るモータにより駆動される圧縮機を備える冷凍装置の一例としての空気調和装置の概略構成図である。FIG. 14 is a schematic configuration diagram of an air conditioner as an example of a refrigeration system including a compressor driven by a motor according to Embodiment 1. FIG.
　以下、実施形態について図面を参照しながら説明する。尚、以下の実施形態は、本質的に好ましい例示であって、本発明、その適用物、あるいはその用途の範囲を制限することを意図するものではない。 Hereinafter, embodiments will be described with reference to the drawings. The following embodiments are essentially preferable illustrations, and are not intended to limit the scope of the present invention, its applications, or its uses.
　《実施形態１》
　〈全体構成〉
　図１に示すように、モータ（10）は、主として、固定子コア（13）と、ロータ（17）とを備える。固定子コア（13）は、所定形状を持つ鋼板を複数枚積層した積層体を締結することによって形成される。固定子コア（13）は、略円筒状のバックヨーク部（11）と、複数（例えば９個）のティース（12）とを含む。固定子コア（13）は、ケーシング（16）の内側に嵌合される。ケーシング（16）は、例えばパイプから構成される。ロータ（17）は、固定子コア（13）の内径側に固定子コア（13）と同軸で回転自在に設けられる。すなわち、モータ（10）は、インナーロータ型である。また、モータ（10）は、例えば周方向に連続する３個のティース（12）がそれぞれＵ相、Ｖ相及びＷ相を形成する三相型である。 <<Embodiment 1>>
<overall structure>
As shown in FIG. 1, the motor (10) mainly includes a stator core (13) and a rotor (17). The stator core (13) is formed by fastening a laminate obtained by laminating a plurality of steel plates having a predetermined shape. The stator core (13) includes a substantially cylindrical back yoke portion (11) and a plurality of (eg, nine) teeth (12). The stator core (13) is fitted inside the casing (16). The casing (16) is made of, for example, a pipe. The rotor (17) is rotatably provided coaxially with the stator core (13) on the inner diameter side of the stator core (13). That is, the motor (10) is of the inner rotor type. The motor (10) is, for example, a three-phase type in which three circumferentially continuous teeth (12) respectively form a U-phase, a V-phase and a W-phase.
　尚、本開示において、「略円筒状」とは、概ね円筒形と認識される形状を意味し、数学的に厳密な「円筒」であることまでは必須としない。例えば外周に凹凸を有するような場合も「略円筒状」である。凹凸は、例えば加工精度、加工方法等に起因して生じるものであってもよいし、意図的に形成されたものであってもよい。 In addition, in the present disclosure, "substantially cylindrical" means a shape that is generally recognized as a cylindrical shape, and it is not essential to be a mathematically strict "cylindrical". For example, a case where the outer circumference has unevenness is also "substantially cylindrical". The unevenness may be caused, for example, by processing accuracy, processing method, or the like, or may be formed intentionally.
　また、本開示において、バックヨーク部（11）の軸方向、径方向、周方向をそれぞれ、単に軸方向、径方向、周方向と称することもある。 Further, in the present disclosure, the axial direction, radial direction, and circumferential direction of the back yoke portion (11) may be simply referred to as axial direction, radial direction, and circumferential direction, respectively.
　複数のティース（12）は、軸回りに回転対称に配置される。バックヨーク部（11）とティース（12）とは一体に形成される。バックヨーク部（11）は、複数のパーツを組み合わせて構成されてもよい。ティース（12）は、バックヨーク部（11）から径方向内側に突出する。すなわち、固定子コア（13）では、内周方向に複数のティース（12）が回転対称に一体に設けられる。 A plurality of teeth (12) are arranged rotationally symmetrically about the axis. The back yoke portion (11) and the teeth (12) are integrally formed. The back yoke portion (11) may be configured by combining a plurality of parts. The teeth (12) protrude radially inward from the back yoke portion (11). That is, in the stator core (13), a plurality of teeth (12) are integrally provided rotationally symmetrically in the inner peripheral direction.
　複数のティース（12）は、内周側から外周側まで周方向幅が一定のストレートティースであってもよいし、或いは、外周側から内周側に向けて周方向幅が小さくなっていてもよい。 The plurality of teeth (12) may be straight teeth having a constant circumferential width from the inner peripheral side to the outer peripheral side, or may have a circumferential width that decreases from the outer peripheral side to the inner peripheral side. good.
　モータ（10）は、複数のティース（12）のそれぞれに巻き回された複数の巻線（151,152,153）をさらに備える。複数の巻線（151,152,153）と固定子コア（13）とは、例えばＰＥＴ、ＰＢＴ、ＰＰＳなどの樹脂部材（図示省略）により絶縁される。複数の巻線（151,152,153）は、少なくともアルミニウムを含む線材で構成されてもよい。複数の巻線（151,152,153）を構成する線材の導体断面積は、例えば０．０５ｍｍ2～１．３ｍｍ2である。 The motor (10) further includes a plurality of windings (151, 152, 153) wound around each of the teeth (12). The plurality of windings (151, 152, 153) and the stator core (13) are insulated by a resin member (not shown) such as PET, PBT, or PPS. The plurality of windings (151, 152, 153) may be made of wire containing at least aluminum. The conductor cross-sectional area of the wires forming the plurality of windings (151, 152, 153) is, for example, 0.05 mm 2 to 1.3 mm 2 .
　複数の巻線（151,152,153）は、巻数が同じで巻き形状が異なる第１巻線（151）、第２巻線（152）及び第３巻線（153）から構成される。本実施形態では、第１巻線（151）、第２巻線（152）及び第３巻線（153）はそれぞれ、同数（例えば３個）ずつ配置される。第１巻線（151）、第２巻線（152）及び第３巻線（153）はそれぞれ、例えば、絶縁部材に巻線し且つ絶縁部材と線材が一体になったボビン巻線したコイル、又は絶縁部材を用いていない線材のみの空芯コイルであってもよい。第１巻線（151）、第２巻線（152）及び第３巻線（153）として空芯コイルを用いる場合、自己融着線を用いて線材同士を固定してもよいし、又は接着剤を塗布して線材同士を固定してもよい。第１巻線（151）、第２巻線（152）及び第３巻線（153）によって、ティース（12）同士の間のスロット（14）が占有される。 The plurality of windings (151, 152, 153) are composed of a first winding (151), a second winding (152) and a third winding (153) having the same number of turns and different winding shapes. In this embodiment, the same number (for example, three) of the first windings (151), the second windings (152) and the third windings (153) are arranged. Each of the first winding (151), the second winding (152) and the third winding (153) is, for example, a bobbin-wound coil in which the insulation member and the wire material are integrated, Alternatively, it may be an air-core coil made only of a wire without using an insulating member. When air-core coils are used as the first winding (151), the second winding (152), and the third winding (153), the wires may be fixed together using a self-bonding wire, or may be bonded. The wires may be fixed to each other by applying an agent. The slots (14) between the teeth (12) are occupied by the first winding (151), the second winding (152) and the third winding (153).
　固定子コア（13）の内周側から複数の巻線（151,152,153）をスロット（14）内に挿入しやすくするために、複数のティース（12）は、内周側先端につばの無いティースであってもよい。つばの無いティースは、例えば、ティース幅が外周側から内周側まで同等であってもよいし、又は内周側ティース幅が外周側ティース幅よりも小さくてもよい。或いは、コイル配置後に複数の巻線（151,152,153）を固定するために、例えば折り曲げ等によって、ティース（12）の内周側先端につばを形成してもよい。或いは、ティース（12）の内周側に、ボビン巻線を固定可能な凸部が設けられてもよい。尚、固定子コア（13）と複数の巻線（151,152,153）とを固定するために、例えば、接着剤やワニス含浸等による接着を用いてもよい。 In order to facilitate insertion of the plurality of windings (151, 152, 153) into the slots (14) from the inner peripheral side of the stator core (13), the plurality of teeth (12) are teeth without flanges on the tips of the inner peripheral side. There may be. The ribless teeth may have, for example, the same tooth width from the outer peripheral side to the inner peripheral side, or the inner peripheral tooth width may be smaller than the outer peripheral tooth width. Alternatively, in order to fix the plurality of windings (151, 152, 153) after arranging the coils, a flange may be formed at the inner peripheral tip of the tooth (12) by, for example, bending. Alternatively, the inner peripheral side of the tooth (12) may be provided with a protrusion capable of fixing the bobbin winding. In order to fix the stator core (13) and the plurality of windings (151, 152, 153), for example, adhesion such as adhesive or varnish impregnation may be used.
　〈巻線の構成〉
　第１巻線（151）は、複数のティース（12）のうち対応する第１ティース（12a）の周方向一方側に第１形状を有すると共に、当該第１ティース（12a）の周方向他方側に当該第１ティース（12a）を挟んで略対称な第２形状を有する。言い換えると、第１巻線（151）における第１ティース（12a）の周方向両側のスロット（14）内にそれぞれ配置される部分（151ａ,151b）は、軸方向から見た断面形状が略対称である（図２（ａ）参照）。ここで、第１巻線（151）の各部分（151ａ,151b）の周方向幅は、外周側から内周側に向けて小さくなってもよい。或いは、第１巻線（151）の各部分（151ａ,151b）の周方向幅は、外周側から内周側まで同等であってもよい。 <Structure of winding>
The first winding (151) has a first shape on one side in the circumferential direction of the corresponding first tooth (12a) of the plurality of teeth (12), and the other side in the circumferential direction of the first tooth (12a). has a substantially symmetrical second shape across the first tooth (12a). In other words, the portions (151a, 151b) of the first winding (151) arranged in the slots (14) on both sides in the circumferential direction of the first tooth (12a) have substantially symmetrical cross-sectional shapes when viewed in the axial direction. (see FIG. 2(a)). Here, the circumferential width of each portion (151a, 151b) of the first winding (151) may decrease from the outer circumference toward the inner circumference. Alternatively, the circumferential widths of the portions (151a, 151b) of the first winding (151) may be the same from the outer circumference to the inner circumference.
　第２巻線（152）は、複数のティース（12）のうち対応する第２ティース（12b）の周方向一方側に第３形状を有すると共に、当該第２ティース（12b）の周方向他方側に当該第２ティース（12b）を挟んで前記第３形状と略対称な第４形状を有する。言い換えると、第２巻線（152）における第２ティース（12b）の周方向両側のスロット（14）内にそれぞれ配置される部分（152ａ,152b）は、軸方向から見た断面形状が略対称である（図２（ｂ）参照）。ここで、第２巻線（152）の各部分（152ａ,152b）の周方向幅は、外周側から内周側まで同等であってもよい。或いは、第２巻線（152）の各部分（152ａ,152b）の周方向幅は、外周側から内周側に向けて大きくなってもよい。 The second winding (152) has a third shape on one side in the circumferential direction of the corresponding second tooth (12b) of the plurality of teeth (12), and the other side in the circumferential direction of the second tooth (12b). has a fourth shape substantially symmetrical to the third shape with the second tooth (12b) interposed therebetween. In other words, the portions (152a, 152b) of the second winding (152) disposed in the slots (14) on both sides in the circumferential direction of the second tooth (12b) have substantially symmetrical cross-sectional shapes when viewed in the axial direction. (see FIG. 2(b)). Here, the circumferential widths of the portions (152a, 152b) of the second winding (152) may be the same from the outer circumference to the inner circumference. Alternatively, the circumferential width of each portion (152a, 152b) of the second winding (152) may increase from the outer circumference toward the inner circumference.
　尚、本開示において、通常の巻線技術によってティースを挟んで幾何学的に厳密に対称な形状を有する巻線を形成することが難しいことを考慮して、「略対称な形状」との表記を用いているが、これらの表記は、実質的に対称な形状を含むものとする。また、工業生産上の加工精度に起因する不可避的な形状のばらつきの範囲内で「対称な形状」から変形した形状は、「略対称な形状」に包含されるものとする。 In the present disclosure, the term “substantially symmetrical shape” is used in consideration of the difficulty of forming a winding having a strictly geometrically symmetrical shape across teeth using a normal winding technique. are used, these notations are intended to include substantially symmetrical shapes. In addition, a shape that is deformed from the "symmetrical shape" within the range of unavoidable variations in shape due to processing accuracy in industrial production shall be included in the "substantially symmetrical shape".
　第３巻線（153）は、複数のティース（12）のうち対応する第３ティース（12c）の周方向一方側に、第１巻線（151）の第１形状と略等しい第５形状を有する。また、第３巻線（153）は、第３ティース（12c）の周方向他方側に、第２巻線（152）の第４形状と略等しい第６形状を有する。 The third winding (153) has a fifth shape substantially equal to the first shape of the first winding (151) on one circumferential side of the corresponding third tooth (12c) of the plurality of teeth (12). have. The third winding (153) has a sixth shape substantially equal to the fourth shape of the second winding (152) on the other circumferential side of the third tooth (12c).
　言い換えると、第３巻線（153）における第３ティース（12c）の周方向一方側のスロット（14）内に配置される部分（153a）は、第１巻線（151）における第１ティース（12a）の周方向一方側のスロット（14）内に配置される部分（151a）と略等しい形状を有する（図２（ａ）、（ｃ）参照）。また、第３巻線（153）における第３ティース（12c）の周方向他方側のスロット（14）内に配置される部分（153b）は、第２巻線（152）における第２ティース（12b）の周方向他方側のスロット（14）内に配置される部分（152b）と略等しい形状を有する（図２（ｂ）、（ｃ）参照）。 In other words, the portion (153a) of the third winding (153) arranged in the slot (14) on one side in the circumferential direction of the third tooth (12c) corresponds to the first tooth ( 12a) has a shape substantially equal to that of the portion (151a) arranged in the slot (14) on one side in the circumferential direction (see FIGS. 2(a) and (c)). In addition, the portion (153b) of the third winding (153) disposed in the slot (14) on the other side in the circumferential direction of the third tooth (12c) corresponds to the second tooth (12b) of the second winding (152). ) in the slot (14) on the other side in the circumferential direction (see FIGS. 2(b) and 2(c)).
　尚、本開示において、通常の巻線技術によって、一の巻線に対して幾何学的に厳密に等しい形状で他の巻線を形成することが難しいことを考慮して、「略等しい形状」との表記を用いているが、これらの表記は、実質的に等しい形状を含むものとする。また、工業生産上の加工精度に起因する不可避的な形状のばらつきの範囲内で「等しい形状」から変形した形状は、「略等しい形状」に包含されるものとする。 In the present disclosure, considering that it is difficult to form another winding in a shape that is geometrically exactly the same as one winding by ordinary winding techniques, the term “substantially equal shape” is used. Although the notation is used, these notations are intended to include substantially equivalent shapes. In addition, a shape that is deformed from the "equal shape" within the range of unavoidable shape variation due to the processing accuracy in industrial production shall be included in the "substantially equal shape".
　本実施形態では、複数の巻線（151,152,153）として、圧縮成形した成形済みのコイルを使用してもよい。圧縮成形したコイルを用いる場合、少なくとも、第１巻線（151）の第１形状（部分（151ａ））及び第２形状（部分（151b））、並びに第３巻線（153）の第５形状（部分（153a））は、圧縮成形されたものである。また、複数の巻線（151,152,153）の巻線方式としては、集中巻を用いる。 In this embodiment, pre-formed coils that have been compression-formed may be used as the plurality of windings (151, 152, 153). When compression molded coils are used, at least the first shape (portion (151a)) and the second shape (portion (151b)) of the first winding (151) and the fifth shape of the third winding (153). (Part (153a)) is compression molded. In addition, concentrated winding is used as the winding method for the plurality of windings (151, 152, 153).
　図１、図２に示すように、第３巻線（153）の部分（153a）の第５形状（つまり第１巻線（151）の部分（151a）の第１形状）と、第３巻線（153）の部分（153b）の第６形状（つまり第２巻線（152）の部分（152b）の第４形状）とは互いに嵌合して、スロット（14）に収納可能な形状を構成する。また、第１巻線（151）の部分（151b）の第２形状と、第２巻線（152）の部分（152a）の第３形状とは互いに嵌合して、スロット（14）に収納可能な形状を構成する。 As shown in FIGS. 1 and 2, the fifth shape of the portion (153a) of the third winding (153) (that is, the first shape of the portion (151a) of the first winding (151)) and the third The sixth shape of the portion (153b) of the wire (153) (that is, the fourth shape of the portion (152b) of the second winding (152) is fitted to each other to form a shape that can be accommodated in the slot (14). Configure. Further, the second shape of the portion (151b) of the first winding (151) and the third shape of the portion (152a) of the second winding (152) are fitted to each other to be accommodated in the slot (14). Configure possible shapes.
　また、図１、図２に示すように、各巻線（151,152,153）は、各スロット（14）において、軸方向から見てスロット（14）の有効面積（巻線配置に不可避の絶縁部材、空隙、線変形などの面積を除いた面積）の略半分の面積を占有する。すなわち、いずれの巻線（151,152,153）も、対応するティース（12）の両側の各スロット（14）に配置された部分（「行き」巻き及び「帰り」巻き）は、略同じ面積を有する。 As shown in FIGS. 1 and 2, each winding (151, 152, 153) in each slot (14) has an effective area of the slot (14) when viewed from the axial direction (insulating members, air gaps, and The area excluding the area of linear deformation, etc.). That is, the portions (“forward” winding and “returning” winding) of each winding (151, 152, 153) placed in each slot (14) on both sides of the corresponding tooth (12) have substantially the same area.
　尚、第３巻線（153）のコイルエンドの一部は、バックヨーク部（11）の軸方向の端部上を通るように配置されてもよい。第３巻線（153）は、第３ティース（12c）を挟んで周方向両側に非対称な形状を有することから、第３ティース（12c）上でわたり線が周方向に対して斜めに形成されるため、導線が重なってコイルエンドの軸方向厚みが第１巻線（151）及び第２巻線（152）よりも増加しやすい。それに対して、バックヨーク部（11）の軸方向端部上で第３巻線（153）のコイルエンドの導線取り回しを行うことによって、当該コイルエンドの軸方向厚みの増加を抑制して抵抗を低減することができる。 A part of the coil end of the third winding (153) may be arranged to pass over the axial end of the back yoke portion (11). Since the third winding (153) has an asymmetrical shape on both sides in the circumferential direction with the third tooth (12c) interposed therebetween, the crossover line is formed obliquely with respect to the circumferential direction on the third tooth (12c). Therefore, the conductors overlap and the axial thickness of the coil ends tends to increase more than those of the first winding (151) and the second winding (152). On the other hand, by routing the conductor wire of the coil end of the third winding (153) on the axial end of the back yoke portion (11), the increase in axial thickness of the coil end is suppressed and the resistance is reduced. can be reduced.
　＜巻線の配置＞
　以下、図３～図５を参照しながら、本実施形態のモータ（10）における複数の巻線（151,152,153）の配置方法について、スロット（14）つまりティース（12）が９個設けられた場合を例として説明する。尚、図３～図５において、図１に示すモータ（10）と同じ構成要素には同じ符号を付す。 <Arrangement of windings>
3 to 5, the method of arranging the plurality of windings (151, 152, 153) in the motor (10) of the present embodiment will be described in the case where nine slots (14), that is, nine teeth (12) are provided. An example will be described. 3 to 5, the same components as those of the motor (10) shown in FIG. 1 are given the same reference numerals.
　まず、図３に示すように、９個のティース（12）のうち３個の第１ティース（12a）に対して、３個の第１巻線（151）を配置する。第１ティース（12a）同士の間には、他のティース（12）が２個介在する。第１巻線（151）におけるスロット（14）内に配置される部分の周方向幅は、外周側から内周側に向けて小さくなる。 First, as shown in FIG. 3, three first windings (151) are arranged for three first teeth (12a) out of nine teeth (12). Two other teeth (12) are interposed between the first teeth (12a). The circumferential width of the portion of the first winding (151) located in the slot (14) decreases from the outer circumference toward the inner circumference.
　次に、図４に示すように、９個のティース（12）のうち３個の第３ティース（12c）に対して、３個の第３巻線（153）を配置する。第３ティース（12c）は、第１ティース（12a）の周方向一方側（図４では反時計回り側）に配置される。 Next, as shown in FIG. 4, three third windings (153) are arranged for three third teeth (12c) out of the nine teeth (12). The third teeth (12c) are arranged on one circumferential side (the counterclockwise side in FIG. 4) of the first teeth (12a).
　第１巻線（151）及び第３巻線（153）のそれぞれにおける同一のスロット（14）内に配置される部分は互いに嵌合して、スロット（14）に収納可能な形状を構成する。第１巻線（151）における第３巻線（153）と同一のスロット（14）内に配置される部分の周方向幅は、外周側から内周側に向けて小さくなる一方、第３巻線（153）における第１巻線（151）と同一のスロット（14）内に配置される部分の周方向幅は、外周側から内周側まで同等である。このため、第１巻線（151）が配置されたスロット（14）内に第３巻線（153）を挿入する際のクリアランスを確保できる。 The portions of the first winding (151) and the third winding (153), which are arranged in the same slot (14), fit together to form a shape that can be accommodated in the slot (14). The circumferential width of the portion of the first winding (151) disposed in the same slot (14) as the third winding (153) decreases from the outer circumference to the inner circumference, while the width of the third winding The circumferential width of the portion of the wire (153) placed in the same slot (14) as the first winding (151) is the same from the outer circumference to the inner circumference. Therefore, a clearance can be ensured when inserting the third winding (153) into the slot (14) in which the first winding (151) is arranged.
　次に、図５に示すように、９個のティース（12）のうち３個の第２ティース（12b）に対して、３個の第２巻線（152）を配置する。第２ティース（12b）は、第１ティース（12a）の周方向他方側（図５では時計回り側）に配置される。言い換えると、第２ティース（12b）は、第１ティース（12a）と第３ティース（12c）との間に配置される。 Next, as shown in FIG. 5, three second windings (152) are arranged for three second teeth (12b) out of the nine teeth (12). The second teeth (12b) are arranged on the other circumferential side (the clockwise side in FIG. 5) of the first teeth (12a). In other words, the second teeth (12b) are arranged between the first teeth (12a) and the third teeth (12c).
　第１巻線（151）及び第２巻線（152）のそれぞれにおける同一のスロット（14）内に配置される部分は互いに嵌合して、スロット（14）に収納可能な形状を構成する。第１巻線（151）における第２巻線（152）と同一のスロット（14）内に配置される部分の周方向幅は、外周側から内周側に向けて小さくなる一方、第２巻線（152）における第１巻線（151）と同一のスロット（14）内に配置される部分の周方向幅は、外周側から内周側まで同等である。このため、第１巻線（151）が配置されたスロット（14）内に第２巻線（152）を挿入する際のクリアランスを確保できる。 The portions of the first winding (151) and the second winding (152), which are arranged in the same slot (14), fit together to form a shape that can be accommodated in the slot (14). The circumferential width of the portion of the first winding (151) disposed in the same slot (14) as the second winding (152) decreases from the outer circumference to the inner circumference, The circumferential width of the portion of the wire (152) located in the same slot (14) as the first winding (151) is the same from the outer circumference to the inner circumference. Therefore, a clearance can be ensured when inserting the second winding (152) into the slot (14) in which the first winding (151) is arranged.
　また、第２巻線（152）及び第３巻線（153）のそれぞれにおける同一のスロット（14）内に配置される部分は互いに嵌合して、スロット（14）に収納可能な形状を構成する。第３巻線（153）における第２巻線（152）と同一のスロット（14）内に配置される部分の周方向幅は、外周側から内周側に向けて小さくなる一方、第２巻線（152）における第３巻線（153）と同一のスロット（14）内に配置される部分の周方向幅は、外周側から内周側まで同等である。このため、第３巻線（153）が配置されたスロット（14）内に第２巻線（152）を挿入する際のクリアランスを確保できる。 In addition, the portions of the second winding (152) and the third winding (153) that are arranged in the same slot (14) are fitted to each other to form a shape that can be accommodated in the slot (14). do. The circumferential width of the portion of the third winding (153) located in the same slot (14) as the second winding (152) decreases from the outer circumference to the inner circumference, The circumferential width of the portion of the wire (152) located in the same slot (14) as the third winding (153) is the same from the outer circumference to the inner circumference. Therefore, a clearance can be ensured when inserting the second winding (152) into the slot (14) in which the third winding (153) is arranged.
　＜実施形態１の特徴＞
　本実施形態のモータ（10）は、内周方向に複数のティース（12）が回転対称に一体に設けられた固定子コア（13）と、複数のティース（12）のそれぞれに巻き回された複数の巻線（151,152,153）とを備える。複数の巻線（151,152,153）は、巻数が同じで巻き形状が異なる第１巻線（151）、第２巻線（152）及び第３巻線（153）から構成される。第１巻線（151）は、複数のティース（12）のうち対応する第１ティース（12a）の周方向一方側に第１形状を有すると共に、当該第１ティース（12a）の周方向他方側に当該第１ティース（12a）を挟んで前記第１形状と略対称な第２形状を有する。第２巻線（152）は、複数のティース（12）のうち対応する第２ティース（12b）の周方向一方側に第３形状を有すると共に、当該第２ティース（12b）の周方向他方側に当該第２ティース（12b）を挟んで前記第３形状と略対称な第４形状を有する。第３巻線（153）は、複数のティース（12）のうち対応する第３ティース（12c）の周方向一方側に、第１巻線（151）の第１形状と略等しい第５形状を有する。また、第３巻線（153）は、第３ティース（12c）の周方向他方側に、第２巻線（152）の第４形状と略等しい第６形状を有する。第５形状と第６形状とは互いに嵌合して、複数のティース（12）同士の間のスロット（14）に収納可能な形状を構成する。第６形状の内周側幅は、第６形状の外周側幅と同等か又は当該外周側幅よりも大きい。 <Features of Embodiment 1>
A motor (10) of the present embodiment includes a stator core (13) in which a plurality of teeth (12) are integrally provided rotationally symmetrically in the inner peripheral direction, and a and a plurality of windings (151, 152, 153). The plurality of windings (151, 152, 153) are composed of a first winding (151), a second winding (152) and a third winding (153) having the same number of turns and different winding shapes. The first winding (151) has a first shape on one side in the circumferential direction of the corresponding first tooth (12a) of the plurality of teeth (12), and the other side in the circumferential direction of the first tooth (12a). has a second shape substantially symmetrical to the first shape with the first tooth (12a) interposed therebetween. The second winding (152) has a third shape on one side in the circumferential direction of the corresponding second tooth (12b) of the plurality of teeth (12), and the other side in the circumferential direction of the second tooth (12b). has a fourth shape substantially symmetrical to the third shape with the second tooth (12b) interposed therebetween. The third winding (153) has a fifth shape substantially equal to the first shape of the first winding (151) on one circumferential side of the corresponding third tooth (12c) of the plurality of teeth (12). have. The third winding (153) has a sixth shape substantially equal to the fourth shape of the second winding (152) on the other circumferential side of the third tooth (12c). The fifth shape and the sixth shape fit together to form a shape that can be accommodated in the slots (14) between the teeth (12). The inner peripheral width of the sixth shape is equal to or greater than the outer peripheral width of the sixth shape.
　本実施形態のモータ（10）によると、形状が互いに異なり且つ隣り合う形状の組合せがスロット（14）の形状に適合する３種類の巻線（151,152,153）を用いることにより、占積率を向上させる。言い換えると、３種類の巻線（151,152,153）のスロット（14）内での断面形状（軸方向から見た形状）を、スロット（14）への挿入時の軌跡が他の巻線やコアその他部材と重ならない形状に設定する。 According to the motor (10) of the present embodiment, three types of windings (151, 152, 153) having different shapes and having a combination of adjacent shapes that match the shape of the slot (14) improve the space factor. . In other words, the cross-sectional shape (shape viewed from the axial direction) of the three types of windings (151, 152, 153) in the slot (14) is different from that of other windings, cores, and other members when they are inserted into the slot (14). Set to a shape that does not overlap with
　尚、本実施形態のモータ（10）では、同一スロット（14）内に収納される巻線は、３種類の巻線（151,152,153）のうちの２種類の巻線のみである。 In addition, in the motor (10) of the present embodiment, only two types of windings out of the three types of windings (151, 152, 153) are housed in the same slot (14).
　より具体的には、第１巻線（151）における第１ティース（12a）の周方向一方側の形状（第１形状）と、第２巻線（152）における第２ティース（12a）の周方向他方側の形状（第４形状）とを組み合わせると、スロット（14）に収納可能な形状が構成される。また、第３巻線（153）は、第３ティース（12c）の周方向両側にそれぞれ、第１形状と略等しい第５形状、及び第４形状と略等しい第６形状を有する。このため、巻線時にスロット（14）の有効面積をロスなく活用できるため、占積率を向上させることができる。 More specifically, the shape (first shape) of the first tooth (12a) on one side in the circumferential direction of the first winding (151) and the circumferential direction of the second tooth (12a) of the second winding (152) Combining it with the shape on the other side of the direction (fourth shape) constitutes a shape that can be accommodated in the slot (14). The third winding (153) has a fifth shape substantially equal to the first shape and a sixth shape substantially equal to the fourth shape on both circumferential sides of the third tooth (12c). Therefore, since the effective area of the slot (14) can be utilized without loss during winding, the space factor can be improved.
　また、本実施形態のモータ（10）によると、３種類の巻線（151,152,153）をそれぞれ同数ずつ配置するため、奇数個のスロット（14）つまり奇数個のティース（12）を有する場合でも、占積率の向上が可能となる。本例では、９個のスロット（14）を設けたモータ（10）を例示したが、その他、例えば１５個や２１個等の奇数スロットを設けたモータが提供可能である。或いは、例えば６個や１２個等の偶数スロットを設けたモータも提供可能である。 In addition, according to the motor (10) of the present embodiment, since the same number of the three types of windings (151, 152, 153) are arranged, even if the motor (10) has an odd number of slots (14), that is, an odd number of teeth (12), the number of occupied It is possible to improve the product factor. In this example, the motor (10) provided with nine slots (14) was illustrated, but other motors provided with an odd number of slots, such as fifteen or twenty-one slots, can be provided. Alternatively, motors with an even number of slots, eg 6 or 12, can be provided.
　また、本実施形態のモータ（10）によると、ティース（12）が一体に設けられた固定子コア（13）において３種類の巻線（151,152,153）を成形コイルとして適用できるので、ティース／コア分割に起因する損失の増加や工程の複雑化をまねくことなく、占積率の向上が可能となる。 Further, according to the motor (10) of the present embodiment, three types of windings (151, 152, 153) can be applied as molded coils in the stator core (13) integrally provided with the teeth (12), so that the teeth/core division can be achieved. It is possible to improve the space factor without increasing loss or complicating the process due to the above.
　本実施形態のモータ（10）において、第１巻線（151）における第１ティース（12a）の周方向一方側の第１形状（つまり第３巻線（153）における第３ティース（12c）の周方向一方側の第５形状）において、内周側幅は外周側幅と同等か又は当該外周側幅よりも小さくてもよい。このようにすると、第２巻線（152）をスロット（14）内に配置する前に、第１巻線（151）や第３巻線（153）をスロット（14）内に配置しても、第２巻線（152）をスロット（14）内に挿入する際のクリアランスを確保することができる。 In the motor (10) of the present embodiment, the first shape on one circumferential side of the first teeth (12a) in the first winding (151) (that is, the shape of the third teeth (12c) in the third winding (153) In the fifth shape on one side in the circumferential direction), the inner peripheral width may be equal to or smaller than the outer peripheral width. With this arrangement, the first winding (151) and the third winding (153) can be arranged in the slot (14) before the second winding (152) is arranged in the slot (14). , the clearance when inserting the second winding (152) into the slot (14) can be ensured.
　本実施形態のモータ（10）において、複数のティース（12）は、内周側先端につばの無いティース（12）であってもよい。このようにすると、固定子コア（13）の内周側からスロット（14）内に複数の巻線（151,152,153）を容易に挿入することができる。 In the motor (10) of the present embodiment, the plurality of teeth (12) may be teeth (12) having no flanges at the tips on the inner peripheral side. By doing so, the plurality of windings (151, 152, 153) can be easily inserted into the slots (14) from the inner peripheral side of the stator core (13).
　本実施形態のモータ（10）において、複数のティース（12）は、奇数個のティースであってもよい。このようにすると、奇数個のティース（12）つまり奇数個のスロット（14）を有するモータ（10）において、占積率を向上させることができる。 In the motor (10) of this embodiment, the plurality of teeth (12) may be an odd number of teeth. In this way, the space factor can be improved in the motor (10) having an odd number of teeth (12), that is, an odd number of slots (14).
　本実施形態のモータ（10）において、固定子コア（13）は、複数のティース（12）の外周側に略円筒状のバックヨーク部（11）を有し、第３巻線（153）のコイルエンドの一部は、バックヨーク部（11）の軸方向の端部上を通るように配置されてもよい。このようにすると、第３巻線（153）は、第３ティース（12c）を挟んで周方向両側に非対称な形状を有することから、コイルエンドの軸方向厚みが第１巻線（151）及び第２巻線（152）よりも増加しやすいところ、バックヨーク部（11）の軸方向端部上でコイルエンドの導線取り回しを行うので、コイルエンドの軸方向厚みの増加を抑制できる。 In the motor (10) of the present embodiment, the stator core (13) has a substantially cylindrical back yoke portion (11) on the outer peripheral side of the plurality of teeth (12). A portion of the coil end may be arranged to pass over the axial end of the back yoke portion (11). With this configuration, the third winding (153) has an asymmetrical shape on both circumferential sides of the third tooth (12c), so that the axial thickness of the coil end is equal to that of the first winding (151). Since the conductor wire of the coil end is routed on the axial end portion of the back yoke portion (11) where the thickness tends to increase more than the second winding (152), an increase in the axial thickness of the coil end can be suppressed.
　本実施形態のモータ（10）において、複数の巻線（151,152,153）は、少なくともアルミニウムを含む線材で構成されてもよい。このようにすると、モータ（10）の製造コストを低減できると共に、モータ（10）を軽量化することができる。 　In the motor (10) of the present embodiment, the plurality of windings (151, 152, 153) may be made of a wire containing at least aluminum. In this way, the manufacturing cost of the motor (10) can be reduced, and the weight of the motor (10) can be reduced.
　＜実施形態１の変形例＞
　前記実施形態１のモータ（10）では、３種類の巻線（151,152,153）、つまり、第１巻線（151）、第２巻線（152）及び第３巻線（153）はそれぞれ、同数（例えば３個）ずつ配置された。これにより、３の倍数個のスロット（14）（ティース（12））を持つモータの提供が可能になった。 <Modification of Embodiment 1>
In the motor (10) of Embodiment 1, the three types of windings (151, 152, 153), that is, the first winding (151), the second winding (152) and the third winding (153) are the same number ( For example, three) were arranged. This made it possible to provide motors with a multiple of three slots (14) (teeth (12)).
　それに対して、本変形例のモータ（20）では、図６に示すように、前記実施形態１のモータ（10）と同じ３種類の巻線（151,152,153）を用いるが、３種類の巻線（151,152,153）を構成する第１巻線（151）、第２巻線（152）及び第３巻線（153）の配置数は同じではない。本変形例のモータ（20）では、例示として、第１巻線（151）及び第２巻線（152）が１つずつ配置される一方、第３巻線（153）は７つ配置される。 In contrast, as shown in FIG. 6, the motor (20) of this modified example uses the same three types of windings (151, 152, 153) as the motor (10) of the first embodiment, but three types of windings ( 151, 152, 153). In the motor (20) of this modification, for example, one first winding (151) and one second winding (152) are arranged, while seven third windings (153) are arranged. .
　以下、図７～図１０を参照しながら、本変形例のモータ（20）における複数の巻線（151,152,153）の配置方法について、スロット（14）つまりティース（12）が９個設けられた場合を例として説明する。尚、図６～図１０において、図１～図５に示す前記実施形態１と同じ構成要素には同じ符号を付す。 7 to 10, the method of arranging the plurality of windings (151, 152, 153) in the motor (20) of this modified example will be described below with reference to the case where nine slots (14), that is, nine teeth (12) are provided. An example will be described. 6 to 10, the same reference numerals are given to the same constituent elements as in the first embodiment shown in FIGS. 1 to 5. FIG.
　まず、図７に示すように、９個のティース（12）のうち１個の第１ティース（12a）に対して１個の第１巻線（151）を配置する。第１巻線（151）におけるスロット（14）内に配置される部分の周方向幅は、外周側から内周側に向けて小さくなる。 First, as shown in FIG. 7, one first winding (151) is arranged for one first tooth (12a) of the nine teeth (12). The circumferential width of the portion of the first winding (151) located in the slot (14) decreases from the outer circumference toward the inner circumference.
　次に、図８に示すように、９個のティース（12）のうち１個の第３ティース（12c）に対して、１個の第３巻線（153）を配置する。第３ティース（12c）は、第１ティース（12a）の周方向一方側（図８では反時計回り側）に配置される。 Next, as shown in FIG. 8, one third winding (153) is arranged for one third tooth (12c) of the nine teeth (12). The third teeth (12c) are arranged on one circumferential side (the counterclockwise side in FIG. 8) of the first teeth (12a).
　第１巻線（151）及び第３巻線（153）のそれぞれにおける同一のスロット（14）内に配置される部分は互いに嵌合して、スロット（14）に収納可能な形状を構成する。第１巻線（151）における第３巻線（153）と同一のスロット（14）内に配置される部分の周方向幅は、外周側から内周側に向けて小さくなる一方、第３巻線（153）における第１巻線（151）と同一のスロット（14）内に配置される部分の周方向幅は、外周側から内周側まで同等である。このため、第１巻線（151）が配置されたスロット（14）内に第３巻線（153）を挿入する際のクリアランスを確保できる。 The portions of the first winding (151) and the third winding (153), which are arranged in the same slot (14), fit together to form a shape that can be accommodated in the slot (14). The circumferential width of the portion of the first winding (151) disposed in the same slot (14) as the third winding (153) decreases from the outer circumference to the inner circumference, while the width of the third winding The circumferential width of the portion of the wire (153) placed in the same slot (14) as the first winding (151) is the same from the outer circumference to the inner circumference. Therefore, a clearance can be ensured when inserting the third winding (153) into the slot (14) in which the first winding (151) is arranged.
　次に、図９に示すように、９個のティース（12）のうち６個の第３ティース（12c）に対して、６個の第３巻線（153）を配置する。図９に示す工程では、図８に示す工程で配置された第３ティース（12c）の周方向一方側（図９では反時計回り側）に連続して並ぶ６個の第３ティース（12c）に対して、反時計回りの順番で６個の第３巻線（153）を順次配置する。 Next, as shown in FIG. 9, six third windings (153) are arranged for six third teeth (12c) out of the nine teeth (12). In the process shown in FIG. 9, six third teeth (12c) arranged continuously on one circumferential side (counterclockwise side in FIG. 9) of the third teeth (12c) arranged in the process shown in FIG. , six third windings (153) are arranged in counterclockwise order.
　互いに隣り合う第３巻線（153）のそれぞれにおける同一のスロット（14）内に配置される部分は互いに嵌合して、スロット（14）に収納可能な形状を構成する。同一のスロット（14）内において、先に配置される第３巻線（153）の周方向幅は、外周側から内周側に向けて小さくなる一方、後で配置される第３巻線（153）の周方向幅は、外周側から内周側まで同等である。このため、先に第３巻線（153）が配置されたスロット（14）内に別の第３巻線（153）を挿入する際のクリアランスを確保できる。 The portions of the third windings (153) adjacent to each other, which are arranged in the same slot (14), fit together to form a shape that can be accommodated in the slot (14). In the same slot (14), the circumferential width of the third winding (153) arranged first decreases from the outer circumference toward the inner circumference, while the width of the third winding (153) arranged later becomes smaller from the outer circumference to the inner circumference. 153), the width in the circumferential direction is the same from the outer circumference to the inner circumference. Therefore, a clearance can be ensured when another third winding (153) is inserted into the slot (14) in which the third winding (153) was previously placed.
　次に、図１０に示すように、９個のティース（12）のうち１個の第２ティース（12b）に対して、１個の第２巻線（152）を配置する。第２ティース（12b）は、第１ティース（12a）の周方向他方側（図１０では時計回り側）に配置される。言い換えると、第２ティース（12b）は、第１ティース（12a）と第３ティース（12c）との間に配置される。 Next, as shown in FIG. 10, one second winding (152) is arranged for one second tooth (12b) of the nine teeth (12). The second teeth (12b) are arranged on the other circumferential side (the clockwise side in FIG. 10) of the first teeth (12a). In other words, the second teeth (12b) are arranged between the first teeth (12a) and the third teeth (12c).
　第１巻線（151）及び第２巻線（152）のそれぞれにおける同一のスロット（14）内に配置される部分は互いに嵌合して、スロット（14）に収納可能な形状を構成する。第１巻線（151）における第２巻線（152）と同一のスロット（14）内に配置される部分の周方向幅は、外周側から内周側に向けて小さくなる一方、第２巻線（152）における第１巻線（151）と同一のスロット（14）内に配置される部分の周方向幅は、外周側から内周側まで同等である。このため、第１巻線（151）が配置されたスロット（14）内に第２巻線（152）を挿入する際のクリアランスを確保できる。 The portions of the first winding (151) and the second winding (152), which are arranged in the same slot (14), fit together to form a shape that can be accommodated in the slot (14). The circumferential width of the portion of the first winding (151) disposed in the same slot (14) as the second winding (152) decreases from the outer circumference to the inner circumference, The circumferential width of the portion of the wire (152) located in the same slot (14) as the first winding (151) is the same from the outer circumference to the inner circumference. Therefore, a clearance can be ensured when inserting the second winding (152) into the slot (14) in which the first winding (151) is arranged.
　また、第２巻線（152）及び第３巻線（153）のそれぞれにおける同一のスロット（14）内に配置される部分は互いに嵌合して、スロット（14）に収納可能な形状を構成する。第３巻線（153）における第２巻線（152）と同一のスロット（14）内に配置される部分の周方向幅は、外周側から内周側に向けて小さくなる一方、第２巻線（152）における第３巻線（153）と同一のスロット（14）内に配置される部分の周方向幅は、外周側から内周側まで同等である。このため、第３巻線（153）が配置されたスロット（14）内に第２巻線（152）を挿入する際のクリアランスを確保できる。 In addition, the portions of the second winding (152) and the third winding (153) that are arranged in the same slot (14) are fitted to each other to form a shape that can be accommodated in the slot (14). do. The circumferential width of the portion of the third winding (153) located in the same slot (14) as the second winding (152) decreases from the outer circumference to the inner circumference, The circumferential width of the portion of the wire (152) located in the same slot (14) as the third winding (153) is the same from the outer circumference to the inner circumference. Therefore, a clearance can be ensured when inserting the second winding (152) into the slot (14) in which the third winding (153) is arranged.
　以上に説明した本変形例のモータ（20）によると、前記実施形態１のモータ（10）と同様の効果に加えて、次のような効果を得ることができる。すなわち、前記実施形態１のモータ（10）では、３種類の巻線（151,152,153）を同数ずつ配置するため、３の倍数個のスロット（ティース）を持つモータの提供が可能であった。それに対して、本変形例のモータ（20）では、３種類の巻線（151,152,153）の配置数は同じではないので、モータのスロット数（ティース数）は特に制限されない。例えば、本変形例のモータ（20）において、周方向に連続して配置される第３巻線（153）の配置数を増減すれば、３つ以上の任意の個数のスロット（ティース）を持つモータの提供が可能である。 According to the motor (20) of this modified example described above, in addition to the same effects as the motor (10) of the first embodiment, the following effects can be obtained. That is, in the motor (10) of Embodiment 1, the same number of the three types of windings (151, 152, 153) are arranged, so it is possible to provide a motor having slots (teeth) that are a multiple of three. On the other hand, in the motor (20) of this modified example, the numbers of the three types of windings (151, 152, 153) arranged are not the same, so the number of slots (number of teeth) of the motor is not particularly limited. For example, in the motor (20) of this modified example, by increasing or decreasing the number of the third windings (153) that are continuously arranged in the circumferential direction, the motor (20) can have any number of slots (teeth) of three or more. A motor can be provided.
　《実施形態２》
　〈巻線の構成〉
　前記実施形態１のモータ（10）では、３種類の巻線（151,152,153）、つまり、図２（ａ）～（ｃ）に示す第１巻線（151）、第２巻線（152）及び第３巻線（153）を用いた。 <<Embodiment 2>>
<Structure of winding>
In the motor (10) of Embodiment 1, there are three types of windings (151, 152, 153), that is, the first winding (151), the second winding (152) and the second winding (152) shown in FIGS. Three windings (153) were used.
　それに対して、本実施形態では、第１巻線（151）、第２巻線（152）及び第３巻線（153）に加えて、図１１に示す形状、つまり、軸方向から見て第３巻線（153）を反転した形状を持つ第４巻線（154）を用いる。図１２に、４種類の巻線（151,152,153,154）を用いた本実施形態のモータ（30）の断面構成例を示す。尚、図１２において、図１に示す前記実施形態１と同じ構成要素には同じ符号を付す。 In contrast, in the present embodiment, in addition to the first winding (151), the second winding (152) and the third winding (153), the shape shown in FIG. A fourth winding (154) having a shape inverted from the third winding (153) is used. FIG. 12 shows a cross-sectional configuration example of the motor (30) of this embodiment using four types of windings (151, 152, 153, 154). In FIG. 12, the same reference numerals are given to the same components as in the first embodiment shown in FIG.
　第４巻線（154）は、第１巻線（151）、第２巻線（152）及び第３巻線（153）と巻数が同じで巻き形状が異なる。第４巻線（154）は、例えば、絶縁部材に巻線し且つ絶縁部材と線材が一体になったボビン巻線したコイル、又は絶縁部材を用いていない線材のみの空芯コイルであってもよい。 The fourth winding (154) has the same number of turns as the first winding (151), the second winding (152) and the third winding (153) but has a different winding shape. The fourth winding (154) may be, for example, a bobbin-wound coil in which the insulating member is wound and the insulating member and the wire rod are integrated, or an air-core coil using only the wire rod without using the insulating member. good.
　第４巻線（154）は、複数のティース（12）のうち対応する第４ティース（12d）の周方向一方側に、第２巻線（152）の第３形状と略等しい第７形状を有する。また、第４巻線（154）は、第４ティース（12d）の周方向他方側に、第１巻線（151）の第２形状と略等しい第８形状を有する。 The fourth winding (154) has a seventh shape substantially equal to the third shape of the second winding (152) on one circumferential side of the corresponding fourth tooth (12d) of the plurality of teeth (12). have. The fourth winding (154) has an eighth shape substantially equal to the second shape of the first winding (151) on the other circumferential side of the fourth tooth (12d).
　言い換えると、第４巻線（154）における第４ティース（12d）の周方向一方側のスロット（14）内に配置される部分（154a）は、第２巻線（152）における第２ティース（12b）の周方向一方側のスロット（14）内に配置される部分（152a）と略等しい形状を有する（図２（ｂ）、図１１参照）。また、第４巻線（154）における第４ティース（12d）の周方向他方側のスロット（14）内に配置される部分（154b）は、第１巻線（151）における第１ティース（12a）の周方向他方側のスロット（14）内に配置される部分（151b）と略等しい形状を有する（図２（ａ）、図１１参照）。 In other words, the portion (154a) of the fourth winding (154) arranged in the slot (14) on one side in the circumferential direction of the fourth tooth (12d) corresponds to the second tooth ( 12b) has a shape substantially equal to that of the portion (152a) arranged in the slot (14) on one side in the circumferential direction (see FIGS. 2(b) and 11). The portion (154b) of the fourth winding (154) disposed in the slot (14) on the other side in the circumferential direction of the fourth tooth (12d) corresponds to the first tooth (12a) of the first winding (151). ) in the slot (14) on the other side in the circumferential direction (see FIGS. 2(a) and 11).
　従って、第４巻線（154）の部分（154a）の第７形状の内周側幅は、当該第７形状の外周側幅と同等である。但し、当該第７形状の内周側幅は、当該第７形状の外周側幅よりも大きくてもよい。 Therefore, the inner width of the seventh shape of the portion (154a) of the fourth winding (154) is equivalent to the outer width of the seventh shape. However, the inner peripheral width of the seventh shape may be larger than the outer peripheral width of the seventh shape.
　また、第４巻線（154）の部分（154b）の第８形状の内周側幅は、当該第８形状の外周側幅よりも小さい。但し、第８形状の内周側幅は、当該第８形状の外周側幅と同等であってもよい。 In addition, the inner width of the eighth shape of the portion (154b) of the fourth winding (154) is smaller than the outer width of the eighth shape. However, the inner peripheral width of the eighth shape may be equal to the outer peripheral width of the eighth shape.
　尚、第４巻線（154）として、圧縮成形した成形済みのコイルを使用してもよい。圧縮成形したコイルを用いる場合、少なくとも、第４巻線（154）の第８形状（部分（154b））は、圧縮成形されたものである。また、第４巻線（154）の巻線方式としては、集中巻を用いる。 A compression-molded coil may be used as the fourth winding (154). When using a compression molded coil, at least the eighth shape (portion (154b)) of the fourth winding (154) is compression molded. Concentrated winding is used as the winding method of the fourth winding (154).
　図１２並びに図２及び図１１に示すように、第４巻線（154）の部分（154a）の第７形状（つまり第２巻線（152）の部分（152a）の第３形状）と、第４巻線（154）の部分（154b）の第８形状（つまり第１巻線（151）の部分（151b）の第２形状）とは互いに嵌合して、スロット（14）に収納可能な形状を構成する。 As shown in FIGS. 12 and 2 and 11, a seventh shape of the portion (154a) of the fourth winding (154) (that is, a third shape of the portion (152a) of the second winding (152)); The eighth shape of the portion (154b) of the fourth winding (154) (that is, the second shape of the portion (151b) of the first winding (151) fits together and can be accommodated in the slot (14). form a shape.
　また、図１２並びに図２及び図１１に示すように、各巻線（151,152,153,154）は、各スロット（14）において、軸方向から見てスロット（14）の有効面積（巻線配置に不可避の絶縁部材、空隙、線変形などの面積を除いた面積）の略半分の面積を占有する。すなわち、いずれの巻線（151,152,153,154）も、対応するティース（12）の両側の各スロット（14）に配置された部分（「行き」巻き及び「帰り」巻き）は、略同じ面積を有する。 12, 2 and 11, each winding (151, 152, 153, 154) has an effective area of the slot (14) in each slot (14) when viewed from the axial direction (insulating member inevitable for winding arrangement). , the area excluding the area of voids, linear deformation, etc.). That is, the portions ("forward" winding and "returning" winding) of any winding (151, 152, 153, 154) placed in each slot (14) on both sides of the corresponding tooth (12) have substantially the same area.
　尚、第４巻線（154）のコイルエンドの一部は、バックヨーク部（11）の軸方向の端部上を通るように配置されてもよい。第４巻線（154）は、第４ティース（12d）を挟んで周方向両側に非対称な形状を有することから、第４ティース（12d）上でわたり線が周方向に対して斜めに形成されるため、導線が重なってコイルエンドの軸方向厚みが第１巻線（151）及び第２巻線（152）よりも増加しやすい。それに対して、バックヨーク部（11）の軸方向端部上で第４巻線（154）のコイルエンドの導線取り回しを行うことによって、当該コイルエンドの軸方向厚みの増加を抑制して抵抗を低減することができる。 A part of the coil end of the fourth winding (154) may be arranged to pass over the axial end of the back yoke portion (11). Since the fourth winding (154) has an asymmetric shape on both sides in the circumferential direction with the fourth tooth (12d) interposed therebetween, the crossover wire is formed obliquely with respect to the circumferential direction on the fourth tooth (12d). Therefore, the conductors overlap and the axial thickness of the coil ends tends to increase more than those of the first winding (151) and the second winding (152). On the other hand, by routing the conductor wire of the coil end of the fourth winding (154) on the axial end of the back yoke portion (11), the increase in axial thickness of the coil end is suppressed and the resistance is reduced. can be reduced.
　＜巻線の配置＞
　以下、図１２を参照しながら、本実施形態のモータ（30）における複数の巻線（151,152,153,154）の配置方法について、スロット（14）つまりティース（12）が９個設けられた場合を例として説明する。 <Arrangement of windings>
A method of arranging the plurality of windings (151, 152, 153, 154) in the motor (30) of this embodiment will be described below with reference to FIG. do.
　図１に示す前記実施形態１のモータ（10）では、第１巻線（151）が３個、第２巻線（152）が３個、第３巻線（153）が３個配置された。それに対して、本実施形態のモータ（30）では、第１巻線（151）が３個、第２巻線（152）が３個、第３巻線（153）が２個、第４巻線（154）が１個配置される。 In the motor (10) of Embodiment 1 shown in FIG. 1, three first windings (151), three second windings (152), and three third windings (153) are arranged. . In contrast, the motor (30) of the present embodiment has three first windings (151), three second windings (152), two third windings (153), and a fourth winding (153). One line (154) is placed.
　また、前記実施形態１のモータ（10）では、全ての第２巻線（152）の間に位置する２つのティース（12）に、時計回りの順で第３巻線（153）及び第１巻線（151）が設けられた。それに対して、本実施形態のモータ（30）では、一対の第２巻線（152）の間に位置する２つのティース（12）に、時計回りの順で第１巻線（151）及び第４巻線（154）が設けらる。 Further, in the motor (10) of Embodiment 1, the third winding (153) and the first winding (153) are arranged in clockwise order on the two teeth (12) located between all the second windings (152). A winding (151) was provided. In contrast, in the motor (30) of the present embodiment, the two teeth (12) positioned between the pair of second windings (152) are provided with the first winding (151) and the second winding in clockwise order. Four windings (154) are provided.
　本実施形態では、まず、９個のティース（12）のうち３個の第１ティース（12a）に対して、３個の第１巻線（151）を配置する。第１巻線（151）におけるスロット（14）内に配置される部分の周方向幅は、外周側から内周側に向けて小さくなる。 In this embodiment, first, three first windings (151) are arranged for three first teeth (12a) out of nine teeth (12). The circumferential width of the portion of the first winding (151) located in the slot (14) decreases from the outer circumference toward the inner circumference.
　次に、２個の第１巻線（151）の周方向一方側（図１２では反時計回り側）に位置する第３ティース（12c）に対して、２個の第３巻線（153）を配置すると共に、１個の第１巻線（151）の周方向他方側（図１２では時計回り側）に位置する第４ティース（12d）に対して、１個の第４巻線（154）を配置する。 Next, the two third windings (153) are attached to the third teeth (12c) located on one circumferential side (counterclockwise side in FIG. 12) of the two first windings (151). and one fourth winding (154 ).
　ここで、第１巻線（151）及び第３巻線（153）のそれぞれにおける同一のスロット（14）内に配置される部分は互いに嵌合して、スロット（14）に収納可能な形状を構成する。第１巻線（151）における第３巻線（153）と同一のスロット（14）内に配置される部分の周方向幅は、外周側から内周側に向けて小さくなる一方、第３巻線（153）における第１巻線（151）と同一のスロット（14）内に配置される部分の周方向幅は、外周側から内周側まで同等である。このため、第１巻線（151）が配置されたスロット（14）内に第３巻線（153）を挿入する際のクリアランスを確保できる。 Here, the portions of the first winding (151) and the third winding (153) that are arranged in the same slot (14) are fitted to each other to form a shape that can be accommodated in the slot (14). Configure. The circumferential width of the portion of the first winding (151) disposed in the same slot (14) as the third winding (153) decreases from the outer circumference to the inner circumference, while the width of the third winding The circumferential width of the portion of the wire (153) placed in the same slot (14) as the first winding (151) is the same from the outer circumference to the inner circumference. Therefore, a clearance can be ensured when inserting the third winding (153) into the slot (14) in which the first winding (151) is arranged.
　また、第１巻線（151）及び第４巻線（154）のそれぞれにおける同一のスロット（14）内に配置される部分は互いに嵌合して、スロット（14）に収納可能な形状を構成する。第１巻線（151）における第４巻線（154）と同一のスロット（14）内に配置される部分の周方向幅は、外周側から内周側に向けて小さくなる一方、第４巻線（154）における第１巻線（151）と同一のスロット（14）内に配置される部分の周方向幅は、外周側から内周側まで同等である。このため、第１巻線（151）が配置されたスロット（14）内に第４巻線（154）を挿入する際のクリアランスを確保できる。 Further, portions of the first winding (151) and the fourth winding (154), which are arranged in the same slot (14), are fitted to each other to form a shape that can be accommodated in the slot (14). do. The circumferential width of the portion of the first winding (151) disposed in the same slot (14) as the fourth winding (154) decreases from the outer circumference toward the inner circumference, while the width of the fourth winding The circumferential width of the portion of the wire (154) located in the same slot (14) as the first winding (151) is the same from the outer circumference to the inner circumference. Therefore, a clearance can be ensured when inserting the fourth winding (154) into the slot (14) in which the first winding (151) is arranged.
　最後に、残った３個の第２ティース（12b）に対して、３個の第２巻線（152）を配置する。３個の第２巻線（152）は、周方向に等間隔で、言い換えると、第２巻線（152）同士の間に他の種類の巻線が２つずつ介在するように、配置される。 Finally, the three second windings (152) are arranged for the remaining three second teeth (12b). The three second windings (152) are arranged at equal intervals in the circumferential direction, in other words, two windings of another type are interposed between the second windings (152). be.
　ここで、第１巻線（151）及び第２巻線（152）のそれぞれにおける同一のスロット（14）内に配置される部分は互いに嵌合して、スロット（14）に収納可能な形状を構成する。第１巻線（151）における第２巻線（152）と同一のスロット（14）内に配置される部分の周方向幅は、外周側から内周側に向けて小さくなる一方、第２巻線（152）における第１巻線（151）と同一のスロット（14）内に配置される部分の周方向幅は、外周側から内周側まで同等である。このため、第１巻線（151）が配置されたスロット（14）内に第２巻線（152）を挿入する際のクリアランスを確保できる。 Here, the portions of the first winding (151) and the second winding (152) that are arranged in the same slot (14) are fitted to each other to form a shape that can be accommodated in the slot (14). Configure. The circumferential width of the portion of the first winding (151) disposed in the same slot (14) as the second winding (152) decreases from the outer circumference to the inner circumference, The circumferential width of the portion of the wire (152) located in the same slot (14) as the first winding (151) is the same from the outer circumference to the inner circumference. Therefore, a clearance can be ensured when inserting the second winding (152) into the slot (14) in which the first winding (151) is arranged.
　また、第２巻線（152）及び第３巻線（153）のそれぞれにおける同一のスロット（14）内に配置される部分は互いに嵌合して、スロット（14）に収納可能な形状を構成する。第３巻線（153）における第２巻線（152）と同一のスロット（14）内に配置される部分の周方向幅は、外周側から内周側に向けて小さくなる一方、第２巻線（152）における第３巻線（153）と同一のスロット（14）内に配置される部分の周方向幅は、外周側から内周側まで同等である。このため、第３巻線（153）が配置されたスロット（14）内に第２巻線（152）を挿入する際のクリアランスを確保できる。 In addition, the portions of the second winding (152) and the third winding (153) that are arranged in the same slot (14) are fitted to each other to form a shape that can be accommodated in the slot (14). do. The circumferential width of the portion of the third winding (153) located in the same slot (14) as the second winding (152) decreases from the outer circumference to the inner circumference, The circumferential width of the portion of the wire (152) located in the same slot (14) as the third winding (153) is the same from the outer circumference to the inner circumference. Therefore, a clearance can be ensured when inserting the second winding (152) into the slot (14) in which the third winding (153) is arranged.
　また、第２巻線（152）及び第４巻線（154）のそれぞれにおける同一のスロット（14）内に配置される部分は互いに嵌合して、スロット（14）に収納可能な形状を構成する。第４巻線（154）における第２巻線（152）と同一のスロット（14）内に配置される部分の周方向幅は、外周側から内周側に向けて小さくなる一方、第２巻線（152）における第４巻線（154）と同一のスロット（14）内に配置される部分の周方向幅は、外周側から内周側まで同等である。このため、第４巻線（154）が配置されたスロット（14）内に第２巻線（152）を挿入する際のクリアランスを確保できる。 In addition, the portions of the second winding (152) and the fourth winding (154) that are arranged in the same slot (14) are fitted to each other to form a shape that can be accommodated in the slot (14). do. The circumferential width of the portion of the fourth winding (154) located in the same slot (14) as the second winding (152) decreases from the outer circumference to the inner circumference, The circumferential width of the portion of the wire (152) located in the same slot (14) as the fourth winding (154) is the same from the outer circumference to the inner circumference. Therefore, a clearance can be ensured when inserting the second winding (152) into the slot (14) in which the fourth winding (154) is arranged.
　尚、本実施形態のモータ（30）においては、図１２に示すように、３個の第２巻線（152）が周方向に等間隔で配置され、第２巻線（152）同士の間には、第１巻線（151）と第３巻線（153）との組合せが２組、及び第１巻線（151）と第４巻線（154）との組合せが１組配置された。しかし、これに代えて、周方向に等間隔で配置された第２巻線（152）同士の間に、第１巻線（151）と第３巻線（153）との組合せを１組、及び第１巻線（151）と第４巻線（154）との組合せを２組配置してもよい。或いは、周方向に等間隔で配置された第２巻線（152）同士の間に、第１巻線（151）と第４巻線（154）との組合せを３組配置してもよい。後者の場合、第１巻線（151）、第２巻線（152）及び第４巻線（154）を含む３種類の巻線（151,152,154）からモータが構成される。 In addition, in the motor (30) of the present embodiment, as shown in FIG. 12, three second windings (152) are arranged at equal intervals in the circumferential direction. , two sets of combinations of the first winding (151) and the third winding (153) and one set of the combination of the first winding (151) and the fourth winding (154) are arranged. . However, instead of this, one set of a combination of the first winding (151) and the third winding (153) is provided between the second windings (152) arranged at regular intervals in the circumferential direction, And two sets of combinations of the first winding (151) and the fourth winding (154) may be arranged. Alternatively, three sets of combinations of the first winding (151) and the fourth winding (154) may be arranged between the second windings (152) arranged at regular intervals in the circumferential direction. In the latter case, the motor consists of three types of windings (151, 152, 154) including a first winding (151), a second winding (152) and a fourth winding (154).
　＜実施形態２の特徴＞
　本実施形態のモータ（30）によると、形状が互いに異なり且つ隣り合う形状の組合せがスロット（14）の形状に適合する４種類の巻線（151,152,153,154）を用いることにより、占積率を向上させる。言い換えると、４種類の巻線（151,152,153,154）のスロット（14）内での断面形状（軸方向から見た形状）を、スロット（14）への挿入時の軌跡が他の巻線やコアその他部材と重ならない形状に設定する。 <Characteristics of Embodiment 2>
According to the motor (30) of the present embodiment, the space factor is improved by using four types of windings (151, 152, 153, 154) whose shapes are different from each other and whose combinations of adjacent shapes match the shape of the slot (14). . In other words, the cross-sectional shapes (shapes seen from the axial direction) of the four types of windings (151, 152, 153, 154) in the slot (14) are different from those of other windings, cores, and other members when they are inserted into the slot (14). Set to a shape that does not overlap with
　尚、本実施形態のモータ（30）では、同一スロット（14）内に収納される巻線は、４種類の巻線（151,152,153,154）のうちの２種類の巻線のみである。 In addition, in the motor (30) of the present embodiment, only two types of windings out of the four types of windings (151, 152, 153, 154) are housed in the same slot (14).
　より具体的には、第１巻線（151）における第１ティース（12a）の周方向一方側の形状（第１形状）と、第２巻線（152）における第２ティース（12a）の周方向他方側の形状（第４形状）とを組み合わせると、スロット（14）に収納可能な形状が構成される。また、第３巻線（153）は、第３ティース（12c）の周方向両側にそれぞれ、第１形状と略等しい第５形状、及び第４形状と略等しい第６形状を有する。 More specifically, the shape (first shape) of the first tooth (12a) on one side in the circumferential direction of the first winding (151) and the circumferential direction of the second tooth (12a) of the second winding (152) Combining it with the shape on the other side of the direction (fourth shape) constitutes a shape that can be accommodated in the slot (14). The third winding (153) has a fifth shape substantially equal to the first shape and a sixth shape substantially equal to the fourth shape on both circumferential sides of the third tooth (12c).
　また、第１巻線（151）における第１ティース（12a）の周方向他方側の形状（第２形状）と、第２巻線（152）における第２ティース（12a）の周方向一方側の形状（第３形状）とを組み合わせると、スロット（14）に収納可能な形状が構成される。また、第４巻線（154）は、第４ティース（12d）の周方向両側にそれぞれ、第３形状と略等しい第７形状、及び第２形状と略等しい第８形状を有する。 Moreover, the shape (second shape) of the first tooth (12a) on the other side in the circumferential direction of the first winding (151) and the shape (second shape) of the second tooth (12a) on the one side of the second winding (152) in the circumferential direction When combined with the shape (third shape), a shape that can be accommodated in the slot (14) is formed. The fourth winding (154) has a seventh shape substantially equal to the third shape and an eighth shape substantially equal to the second shape on both sides in the circumferential direction of the fourth tooth (12d).
　以上のような４種類の巻線（151,152,153,154）の構成によって、巻線時にスロット（14）の有効面積をロスなく活用できるため、占積率を向上させることができる。 With the configuration of the four types of windings (151, 152, 153, 154) as described above, the effective area of the slot (14) can be utilized without loss during winding, so the space factor can be improved.
　また、本実施形態のモータ（30）によると、ティース（12）が一体に設けられた固定子コア（13）において４種類の巻線（151,152,153,154）を成形コイルとして適用できるので、ティース／コア分割に起因する損失の増加や工程の複雑化をまねくことなく、占積率の向上が可能となる。 Further, according to the motor (30) of the present embodiment, four types of windings (151, 152, 153, 154) can be applied as formed coils in the stator core (13) integrally provided with the teeth (12), so that the teeth/core division can be achieved. It is possible to improve the space factor without increasing loss or complicating the process due to the above.
　本実施形態のモータ（30）において、第１巻線（151）における第１ティース（12a）の周方向一方側の第２形状（つまり第４巻線（154）における第４ティース（12d）の周方向他方側の第８形状）において、内周側幅は外周側幅と同等か又は当該外周側幅よりも小さくてもよい。このようにすると、第２巻線（152）をスロット（14）内に配置する前に、第１巻線（151）や第４巻線（154）をスロット（14）内に配置しても、第２巻線（152）をスロット（14）内に挿入する際のクリアランスを確保することができる。 In the motor (30) of the present embodiment, the second shape on one circumferential side of the first teeth (12a) in the first winding (151) (that is, the shape of the fourth teeth (12d) in the fourth winding (154) In the eighth shape on the other side in the circumferential direction), the inner peripheral width may be equal to or smaller than the outer peripheral width. With this arrangement, the first winding (151) and the fourth winding (154) can be arranged in the slot (14) before the second winding (152) is arranged in the slot (14). , the clearance when inserting the second winding (152) into the slot (14) can be ensured.
　本実施形態のモータ（30）において、第４巻線（154）のコイルエンドの一部は、バックヨーク部（11）の軸方向の端部上を通るように配置されてもよい。このようにすると、第４巻線（154）は、第４ティース（12d）を挟んで周方向両側に非対称な形状を有することから、コイルエンドの軸方向厚みが第１巻線（151）及び第２巻線（152）よりも増加しやすいところ、バックヨーク部（11）の軸方向端部上でコイルエンドの導線取り回しを行うので、コイルエンドの軸方向厚みの増加を抑制できる。 In the motor (30) of the present embodiment, part of the coil ends of the fourth winding (154) may be arranged to pass over the axial end of the back yoke portion (11). With this configuration, the fourth winding (154) has an asymmetrical shape on both sides in the circumferential direction with the fourth tooth (12d) interposed therebetween. Since the conductor wire of the coil end is routed on the axial end portion of the back yoke portion (11) where the thickness tends to increase more than the second winding (152), an increase in the axial thickness of the coil end can be suppressed.
　本実施形態のモータ（30）において、複数の巻線（151,152,153,154）は、少なくともアルミニウムを含む線材で構成されてもよい。このようにすると、モータ（30）の製造コストを低減できると共に、モータ（30）を軽量化することができる。 In the motor (30) of the present embodiment, the plurality of windings (151, 152, 153, 154) may be made of wire containing at least aluminum. In this way, the manufacturing cost of the motor (30) can be reduced, and the weight of the motor (30) can be reduced.
　＜実施形態２の変形例＞
　前記実施形態２のモータ（30）では、図１２に示すように、４種類の巻線（151,152,153,154）を用いた。具体的には、複数の第２巻線（152）を他の種類の巻線２個を挟んで周方向に等間隔で配置し、第２巻線（152）同士の間に、第１巻線（151）と第３巻線（153）との組合せ、又は第１巻線（151）と第４巻線（154）との組合せを配置した。これにより、３の倍数個のスロット（14）（ティース（12））を持つモータの提供が可能になった。 <Modification of Embodiment 2>
In the motor (30) of Embodiment 2, as shown in FIG. 12, four types of windings (151, 152, 153, 154) are used. Specifically, a plurality of second windings (152) are arranged at equal intervals in the circumferential direction with two other types of windings sandwiched therebetween, and the first winding is placed between the second windings (152). A combination of a wire (151) and a third winding (153) or a combination of a first winding (151) and a fourth winding (154) were arranged. This made it possible to provide motors with a multiple of three slots (14) (teeth (12)).
　それに対して、本変形例のモータ（40）では、図１３に示すように、前記実施形態２のモータ（30）と同じ４種類の巻線（151,152,153,154）を用いるが、第１巻線（151）、第２巻線（152）、第３巻線（153）及び第４巻線（154）の配置の仕方が、図１２に示す前記実施形態２と異なる。本変形例のモータ（40）では、例示として、第１巻線（151）及び第２巻線（152）はそれぞれ１個、第３巻線（153）は４個、第４巻線（154）は３個される。 In contrast, as shown in FIG. 13, the motor (40) of this modified example uses the same four types of windings (151, 152, 153, 154) as the motor (30) of the second embodiment, but the first winding (151 ), the second winding (152), the third winding (153) and the fourth winding (154) are different from those of the second embodiment shown in FIG. In the motor (40) of this modified example, for example, each of the first winding (151) and the second winding (152) is one, the third winding (153) is four, and the fourth winding (154) is four. ) are three.
　以下、図１３を参照しながら、本変形例のモータ（40）における複数の巻線（151,152,153,154）の配置方法について、スロット（14）つまりティース（12）が９個設けられた場合を例として説明する。尚、図１３において、図１２に示す前記実施形態２と同じ構成要素には同じ符号を付す。 Hereinafter, with reference to FIG. 13, a method of arranging the plurality of windings (151, 152, 153, 154) in the motor (40) of the present modification will be described using an example in which nine slots (14), that is, teeth (12) are provided. do. In FIG. 13, the same reference numerals are given to the same components as in the second embodiment shown in FIG.
　本変形例では、まず、９個のティース（12）のうち１個の第１ティース（12a）に対して１個の第１巻線（151）を配置する。第１巻線（151）におけるスロット（14）内に配置される部分の周方向幅は、外周側から内周側に向けて小さくなる。 In this modification, first, one first winding (151) is arranged for one first tooth (12a) out of nine teeth (12). The circumferential width of the portion of the first winding (151) located in the slot (14) decreases from the outer circumference toward the inner circumference.
　次に、９個のティース（12）のうち４個の第３ティース（12c）に対して、４個の第３巻線（153）を配置する。具体的には、先に配置された第１巻線（151）の周方向一方側（図１３では反時計回り側）に連続して並ぶ４個の第３ティース（12c）に対して、反時計回りの順番で４個の第３巻線（153）を順次配置する。 Next, the four third windings (153) are arranged for the four third teeth (12c) out of the nine teeth (12). Specifically, the four third teeth (12c) arranged in succession on one circumferential side (counterclockwise side in FIG. 13) of the first winding (151) arranged first are rotated in opposite directions. Four third windings (153) are sequentially arranged in clockwise order.
　ここで、第１巻線（151）及び第３巻線（153）のそれぞれにおける同一のスロット（14）内に配置される部分は互いに嵌合して、スロット（14）に収納可能な形状を構成する。第１巻線（151）における第３巻線（153）と同一のスロット（14）内に配置される部分の周方向幅は、外周側から内周側に向けて小さくなる一方、第３巻線（153）における第１巻線（151）と同一のスロット（14）内に配置される部分の周方向幅は、外周側から内周側まで同等である。このため、第１巻線（151）が配置されたスロット（14）内に第３巻線（153）を挿入する際のクリアランスを確保できる。 Here, the portions of the first winding (151) and the third winding (153) that are arranged in the same slot (14) are fitted to each other to form a shape that can be accommodated in the slot (14). Configure. The circumferential width of the portion of the first winding (151) disposed in the same slot (14) as the third winding (153) decreases from the outer circumference to the inner circumference, while the width of the third winding The circumferential width of the portion of the wire (153) placed in the same slot (14) as the first winding (151) is the same from the outer circumference to the inner circumference. Therefore, a clearance can be ensured when inserting the third winding (153) into the slot (14) in which the first winding (151) is arranged.
　また、互いに隣り合う第３巻線（153）のそれぞれにおける同一のスロット（14）内に配置される部分は互いに嵌合して、スロット（14）に収納可能な形状を構成する。同一のスロット（14）内において、先に配置される第３巻線（153）の周方向幅は、外周側から内周側に向けて小さくなる一方、後で配置される第３巻線（153）の周方向幅は、外周側から内周側まで同等である。このため、先に第３巻線（153）が配置されたスロット（14）内に別の第３巻線（153）を挿入する際のクリアランスを確保できる。 In addition, portions of the third windings (153) adjacent to each other, which are arranged in the same slot (14), are fitted to each other to form a shape that can be accommodated in the slot (14). In the same slot (14), the circumferential width of the third winding (153) arranged first decreases from the outer circumference toward the inner circumference, while the width of the third winding (153) arranged later becomes smaller from the outer circumference to the inner circumference. 153), the width in the circumferential direction is the same from the outer circumference to the inner circumference. Therefore, a clearance can be ensured when another third winding (153) is inserted into the slot (14) in which the third winding (153) was previously placed.
　次に、９個のティース（12）のうち３個の第４ティース（12d）に対して、３個の第４巻線（154）を配置する。具体的には、先に配置された第１巻線（151）の周方向他方側（図１３では時計回り側）に連続して並ぶ３個の第４ティース（12d）に対して、時計回りの順番で３個の第４巻線（154）を順次配置する。 Next, three fourth windings (154) are arranged for three fourth teeth (12d) out of the nine teeth (12). Specifically, the three fourth teeth (12d) arranged continuously on the other circumferential side (the clockwise side in FIG. 13) of the first winding (151) arranged first are rotated clockwise. , the three fourth windings (154) are arranged in sequence.
　ここで、第１巻線（151）及び第４巻線（154）のそれぞれにおける同一のスロット（14）内に配置される部分は互いに嵌合して、スロット（14）に収納可能な形状を構成する。第１巻線（151）における第４巻線（154）と同一のスロット（14）内に配置される部分の周方向幅は、外周側から内周側に向けて小さくなる一方、第４巻線（154）における第１巻線（151）と同一のスロット（14）内に配置される部分の周方向幅は、外周側から内周側まで同等である。このため、第１巻線（151）が配置されたスロット（14）内に第４巻線（154）を挿入する際のクリアランスを確保できる。 Here, portions of the first winding (151) and the fourth winding (154), which are arranged in the same slot (14), are fitted together to form a shape that can be accommodated in the slot (14). Configure. The circumferential width of the portion of the first winding (151) disposed in the same slot (14) as the fourth winding (154) decreases from the outer circumference toward the inner circumference, while the width of the fourth winding The circumferential width of the portion of the wire (154) located in the same slot (14) as the first winding (151) is the same from the outer circumference to the inner circumference. Therefore, a clearance can be ensured when inserting the fourth winding (154) into the slot (14) in which the first winding (151) is arranged.
　また、互いに隣り合う第４巻線（154）のそれぞれにおける同一のスロット（14）内に配置される部分は互いに嵌合して、スロット（14）に収納可能な形状を構成する。同一のスロット（14）内において、先に配置される第４巻線（154）の周方向幅は、外周側から内周側に向けて小さくなる一方、後で配置される第４巻線（154）の周方向幅は、外周側から内周側まで同等である。このため、先に第４巻線（154）が配置されたスロット（14）内に別の第４巻線（154）を挿入する際のクリアランスを確保できる。 In addition, portions of the fourth windings (154) adjacent to each other, which are arranged in the same slot (14), are fitted together to form a shape that can be accommodated in the slot (14). In the same slot (14), the circumferential width of the fourth winding (154) arranged first decreases from the outer circumference to the inner circumference, while the width of the fourth winding (154) arranged later becomes smaller from the outer circumference to the inner circumference. 154), the width in the circumferential direction is the same from the outer circumference to the inner circumference. Therefore, it is possible to secure a clearance when another fourth winding (154) is inserted into the slot (14) in which the fourth winding (154) was previously arranged.
　最後に、残った１個の第２ティース（12b）、つまり、第３巻線（153）と第４巻線（154）とに挟まれた第２ティース（12b）に対して、１個の第２巻線（152）を配置する。 Finally, for the remaining one second tooth (12b), that is, the second tooth (12b) sandwiched between the third winding (153) and the fourth winding (154), one A second winding (152) is arranged.
　ここで、第２巻線（152）及び第３巻線（153）のそれぞれにおける同一のスロット（14）内に配置される部分は互いに嵌合して、スロット（14）に収納可能な形状を構成する。第３巻線（153）における第２巻線（152）と同一のスロット（14）内に配置される部分の周方向幅は、外周側から内周側に向けて小さくなる一方、第２巻線（152）における第３巻線（153）と同一のスロット（14）内に配置される部分の周方向幅は、外周側から内周側まで同等である。このため、第３巻線（153）が配置されたスロット（14）内に第２巻線（152）を挿入する際のクリアランスを確保できる。 Here, the portions of the second winding (152) and the third winding (153) which are arranged in the same slot (14) are fitted to each other to form a shape that can be accommodated in the slot (14). Configure. The circumferential width of the portion of the third winding (153) located in the same slot (14) as the second winding (152) decreases from the outer circumference to the inner circumference, The circumferential width of the portion of the wire (152) located in the same slot (14) as the third winding (153) is the same from the outer circumference to the inner circumference. Therefore, a clearance can be ensured when inserting the second winding (152) into the slot (14) in which the third winding (153) is arranged.
　また、第２巻線（152）及び第４巻線（154）のそれぞれにおける同一のスロット（14）内に配置される部分は互いに嵌合して、スロット（14）に収納可能な形状を構成する。第４巻線（154）における第２巻線（152）と同一のスロット（14）内に配置される部分の周方向幅は、外周側から内周側に向けて小さくなる一方、第２巻線（152）における第４巻線（154）と同一のスロット（14）内に配置される部分の周方向幅は、外周側から内周側まで同等である。このため、第４巻線（154）が配置されたスロット（14）内に第２巻線（152）を挿入する際のクリアランスを確保できる。 In addition, the portions of the second winding (152) and the fourth winding (154) that are arranged in the same slot (14) are fitted to each other to form a shape that can be accommodated in the slot (14). do. The circumferential width of the portion of the fourth winding (154) located in the same slot (14) as the second winding (152) decreases from the outer circumference to the inner circumference, The circumferential width of the portion of the wire (152) located in the same slot (14) as the fourth winding (154) is the same from the outer circumference to the inner circumference. Therefore, a clearance can be ensured when inserting the second winding (152) into the slot (14) in which the fourth winding (154) is arranged.
　以上に説明した本変形例のモータ（40）によると、前記実施形態２のモータ（30）と同様の効果に加えて、次のような効果を得ることができる。すなわち、前記実施形態２のモータ（30）では、３の倍数個のスロット（ティース）を持つモータの提供が可能であった。それに対して、本変形例のモータ（40）では、モータのスロット数（ティース数）は特に制限されない。例えば、本変形例のモータ（40）において、周方向に連続して配置される第３巻線（153）又は第４巻線（154）の配置数を増減すれば、４つ以上の任意の個数のスロット（ティース）を持つモータの提供が可能である。 According to the motor (40) of this modified example described above, in addition to the same effects as the motor (30) of the second embodiment, the following effects can be obtained. That is, in the motor (30) of the second embodiment, it is possible to provide a motor having slots (teeth) that are multiples of three. In contrast, in the motor (40) of this modified example, the number of slots (number of teeth) of the motor is not particularly limited. For example, in the motor (40) of this modified example, if the number of the third windings (153) or the fourth windings (154) arranged continuously in the circumferential direction is increased or decreased, four or more arbitrary windings can be arranged. It is possible to provide a motor with any number of slots (teeth).
　《実施形態３》
　以下、実施形態１のモータ（10）により駆動される圧縮機（2）を備える冷凍装置の一例としての空気調和装置（1）について、図１４を参照しながら説明する。 <<Embodiment 3>>
Hereinafter, an air conditioner (1) as an example of a refrigeration system including a compressor (2) driven by the motor (10) of Embodiment 1 will be described with reference to FIG.
　空気調和装置（1）は、蒸気圧縮式の冷凍サイクルによって、対象空間の空調を行う装置である。空気調和装置（1）は、冷房運転を実行可能であり、主として、圧縮機（2）と、熱源側熱交換器（3）と、膨張機構（4）と、利用側熱交換器（5）とを備える。 The air conditioner (1) is a device that air-conditions the target space using a vapor compression refrigeration cycle. An air conditioner (1) is capable of performing cooling operation, and mainly includes a compressor (2), a heat source side heat exchanger (3), an expansion mechanism (4), and a user side heat exchanger (5). and
　圧縮機（2）は、例えば、単一の圧縮部が組み込まれた単段式の遠心圧縮機である。圧縮機（2）は、吸入管（6）を流れる低圧の冷媒を、吸入口（2a）を介して吸入し、吸入口（2a）を介して吸入した冷媒を圧縮して高圧の冷媒とした後に、吐出口（2b）を介して吐出管（7）へと吐出する。尚、吸入管（6）は、利用側熱交換器（5）から出た冷媒を圧縮機（2）の吸入側（吸入口（2a））へと導く冷媒管であり、吐出管（7）は、圧縮機構（2）から吐出口（2b）を介して吐出された冷媒を熱源側熱交換器（3）の入口へと導く冷媒管である。 The compressor (2) is, for example, a single-stage centrifugal compressor incorporating a single compression section. The compressor (2) sucks the low-pressure refrigerant flowing through the suction pipe (6) through the suction port (2a) and compresses the refrigerant sucked through the suction port (2a) into high-pressure refrigerant. After that, it is discharged into the discharge pipe (7) through the discharge port (2b). The suction pipe (6) is a refrigerant pipe that guides the refrigerant discharged from the user-side heat exchanger (5) to the suction side (suction port (2a)) of the compressor (2), and the discharge pipe (7). is a refrigerant pipe that guides the refrigerant discharged from the compression mechanism (2) through the discharge port (2b) to the inlet of the heat source side heat exchanger (3).
　圧縮機（2）は、主として、実施形態１のモータ（10）と、回転軸（2c）と、圧縮部（2d）とを備える。モータ（10）、回転軸（2c）及び圧縮部（2d）などは、図示しないケーシングに収容される。回転軸（2c）は、図示しない軸受により支持される。圧縮部（2d）は、主としてインペラから構成され、当該インペラには、回転軸（2c）からモータ（10）の駆動力が伝達され、回転軸（2c）を軸心として当該インペラは回転する。これにより、圧縮部（2）は、吸入口（2a）を介して流入する吸入冷媒を圧縮する。 The compressor (2) mainly includes the motor (10) of Embodiment 1, a rotating shaft (2c), and a compression section (2d). The motor (10), rotating shaft (2c), compression section (2d), etc. are housed in a casing (not shown). The rotating shaft (2c) is supported by bearings (not shown). The compression section (2d) is mainly composed of an impeller, to which the driving force of the motor (10) is transmitted from the rotating shaft (2c), and rotates around the rotating shaft (2c). As a result, the compression section (2) compresses the suctioned refrigerant flowing through the suction port (2a).
　熱源側熱交換器（3）は、冷却源としての水又は空気と熱交換させることにより、圧縮機（2）から吐出された冷媒の放熱を行う冷媒の放熱器として機能する。熱源側熱交換器（3）の一端は、吐出管（7）を介して圧縮機（2）の吐出口（2b）に接続される。熱源側熱交換器（3）の他端は、膨張機構（4）に接続される。 The heat source side heat exchanger (3) functions as a refrigerant radiator that dissipates heat from the refrigerant discharged from the compressor (2) by exchanging heat with water or air as a cooling source. One end of the heat source side heat exchanger (3) is connected to a discharge port (2b) of the compressor (2) via a discharge pipe (7). The other end of the heat source side heat exchanger (3) is connected to the expansion mechanism (4).
　膨張機構（4）は、熱源側熱交換器（3）で放熱された冷媒の減圧を行う機構であり、例えば、電動膨張弁から構成される。膨張機構（4）の一端は、熱源側熱交換器（3）に接続される。膨張機構（4）の他端は、利用側熱交換器（5）に接続される。 The expansion mechanism (4) is a mechanism that reduces the pressure of the refrigerant radiated by the heat source side heat exchanger (3), and is composed of, for example, an electric expansion valve. One end of the expansion mechanism (4) is connected to the heat source side heat exchanger (3). The other end of the expansion mechanism (4) is connected to the utilization side heat exchanger (5).
　利用側熱交換器（5）は、加熱源としての水又は空気と熱交換させることにより、膨張機構（4）で減圧された冷媒の加熱を行う冷媒の加熱器として機能する。利用側熱交換器（5）の一端は、膨張機構（4）に接続される。利用側熱交換器（5）の他端は、吸入管（6）を介して圧縮機構（2）の吸入口（2a）に接続される。 The user-side heat exchanger (5) functions as a refrigerant heater that heats the refrigerant decompressed by the expansion mechanism (4) by exchanging heat with water or air as a heating source. One end of the utilization side heat exchanger (5) is connected to the expansion mechanism (4). The other end of the utilization side heat exchanger (5) is connected to the suction port (2a) of the compression mechanism (2) through the suction pipe (6).
　以上に説明したように、空気調和装置（1）において、圧縮機（2）、熱源側熱交換器（3）、膨張機構（4）及び利用側熱交換器（5）は、吸入管（6）及び吐出管（7）を含む冷媒配管によって順次接続されることにより、冷媒が循環する経路（8）を構成する。 As described above, in the air conditioner (1), the compressor (2), the heat source side heat exchanger (3), the expansion mechanism (4), and the user side heat exchanger (5) are connected to the suction pipe (6 ) and a discharge pipe (7) to form a path (8) through which the refrigerant circulates.
　本実施形態の圧縮機（2）によると、占積率を向上させた実施形態１のモータ（10）により駆動されるため、圧縮機（2）の高効率化及び軽量化を図ることができる。 According to the compressor (2) of the present embodiment, since it is driven by the motor (10) of Embodiment 1 with an improved space factor, the efficiency of the compressor (2) can be improved and the weight can be reduced. .
　また、本実施形態の冷凍装置（空気調和装置（1））によると、占積率を向上させた実施形態１のモータ（10）により駆動される圧縮機（2）を用いるため、冷凍装置の高効率化及び軽量化を図ることができる。 Further, according to the refrigeration system (air conditioner (1)) of the present embodiment, since the compressor (2) driven by the motor (10) of the first embodiment with improved space factor is used, High efficiency and weight reduction can be achieved.
　尚、本実施形態では、圧縮機（2）を駆動するモータとして、実施形態１のモータ（10）を用いる場合を例示した。しかし、これに代えて、圧縮機を駆動するモータとして、実施形態１の変形例のモータ（20）、実施形態２のモータ（30）、又は実施形態２の変形例のモータ（40）を用いた場合にも、本実施形態と同様の効果を得ることができる。 In this embodiment, the motor (10) of Embodiment 1 is used as the motor for driving the compressor (2). However, instead of this, the motor (20) of the modified example of Embodiment 1, the motor (30) of Embodiment 2, or the motor (40) of the modified example of Embodiment 2 is used as the motor for driving the compressor. The same effect as that of the present embodiment can be obtained even in the case of the present embodiment.
　《その他の実施形態》
　以上、実施形態（変形例を含む。以下同じ。）を説明したが、特許請求の範囲の趣旨及び範囲から逸脱することなく、形態や詳細の多様な変更が可能なことが理解されるであろう。また、以上の実施形態は、本開示の対象の機能を損なわない限り、適宜組み合わせたり、置換したりしてもよい。以上に述べた「第１」、「第２」、・・・という記載は、これらの記載が付与された語句を区別するために用いられており、その語句の数や順序までも限定するものではない。 <<Other embodiments>>
Although the embodiments (including modifications; hereinafter the same) have been described above, it should be understood that various changes in form and details can be made without departing from the spirit and scope of the claims. deaf. Moreover, the above-described embodiments may be appropriately combined or replaced as long as the functions of the object of the present disclosure are not impaired. The descriptions of "first", "second", ... described above are used to distinguish the words and phrases to which these descriptions are given, and even limit the number and order of the words and phrases. is not.
　以上説明したように、本開示は、モータ、圧縮機、及び冷凍装置について有用である。 As described above, the present disclosure is useful for motors, compressors, and refrigerators.
　　　１　　冷凍装置（空気調和装置）
　　　２　　圧縮機
　　１０、２０、３０、４０　　モータ
　　１１　　バックヨーク部
　　１２　　ティース
　　１２ａ　第１ティース
　　１２ｂ　第２ティース
　　１２ｃ　第３ティース
　　１２ｄ　第４ティース
　　１３　　固定子コア
　　１４　　スロット
　　１５１　第１巻線
　　１５２　第２巻線
　　１５３　第３巻線
　　１５４　第４巻線 1 Refrigeration equipment (air conditioning equipment)
2 compressor 10, 20, 30, 40 motor 11 back yoke portion 12 tooth 12a first tooth 12b second tooth 12c third tooth 12d fourth tooth 13 stator core 14 slot 151 first winding 152 second winding 153 third winding 154 fourth winding

Claims (10)

  1. 　内周方向に複数のティース（12）が回転対称に一体に設けられた固定子コア（13）と、前記複数のティース（12）のそれぞれに巻き回された複数の巻線（151,152,153,154）とを備えたモータであって、
    　前記複数の巻線（151,152,153,154）は、巻数が同じで巻き形状が異なる第１巻線（151）、第２巻線（152）及び第３巻線（153）を含み、
    　前記第１巻線（151）は、前記複数のティース（12）のうち対応する第１ティース（12a）の周方向一方側に第１形状を有すると共に、当該第１ティース（12a）の周方向他方側に当該第１ティース（12a）を挟んで前記第１形状と略対称な第２形状を有し、
    　前記第２巻線（152）は、前記複数のティース（12）のうち対応する第２ティース（12b）の周方向一方側に第３形状を有すると共に、当該第２ティース（12b）の周方向他方側に当該第２ティース（12b）を挟んで前記第３形状と略対称な第４形状を有し、
    　前記第３巻線（153）は、前記複数のティース（12）のうち対応する第３ティース（12c）の周方向一方側に、前記第１形状と略等しい第５形状を有すると共に、前記第３ティース（12c）の周方向他方側に、前記第４形状と略等しい第６形状を有し、
    　前記第５形状と前記第６形状とは互いに嵌合して、前記複数のティース（12）同士の間のスロット（14）に収納可能な形状を構成し、
    　前記第６形状の内周側幅は、前記第６形状の外周側幅と同等か又は当該外周側幅よりも大きいモータ。     A stator core (13) in which a plurality of teeth (12) are integrally provided rotationally symmetrically in the inner peripheral direction, and a plurality of windings (151, 152, 153, 154) wound around each of the plurality of teeth (12). A motor comprising
    The plurality of windings (151, 152, 153, 154) includes a first winding (151) having the same number of turns and different winding shapes, a second winding (152) and a third winding (153),
    The first winding (151) has a first shape on one side in the circumferential direction of the corresponding first tooth (12a) of the plurality of teeth (12), and having a second shape substantially symmetrical to the first shape with the first tooth (12a) interposed therebetween on the other side;
    The second winding (152) has a third shape on one side in the circumferential direction of the corresponding second tooth (12b) of the plurality of teeth (12), and having a fourth shape substantially symmetrical to the third shape with the second tooth (12b) interposed therebetween on the other side;
    The third winding (153) has a fifth shape substantially equal to the first shape on one side in the circumferential direction of the corresponding third tooth (12c) of the plurality of teeth (12). A sixth shape substantially equal to the fourth shape is formed on the other circumferential side of the three teeth (12c),
    The fifth shape and the sixth shape are fitted together to form a shape that can be accommodated in the slots (14) between the plurality of teeth (12),
    In the motor, the inner peripheral width of the sixth shape is equal to or greater than the outer peripheral width of the sixth shape.
  2. 　請求項１のモータにおいて
    　前記第５形状の内周側幅は、前記第５形状の外周側幅と同等か又は当該外周側幅よりも小さいモータ。     2. The motor according to claim 1, wherein the inner width of the fifth shape is equal to or smaller than the outer width of the fifth shape.
  3. 　請求項１又は２のモータにおいて、
    　前記複数のティース（12）は、内周側先端につばの無いティースであるモータ。     3. In the motor of claim 1 or 2,
    The motor, wherein the plurality of teeth (12) are teeth without a flange on the inner peripheral side tip.
  4. 　請求項１から３のいずれか１項のモータにおいて、
    　前記複数のティース（12）は、奇数個のティースであるモータ。     In the motor according to any one of claims 1 to 3,
    The motor, wherein the plurality of teeth (12) is an odd number of teeth.
  5. 　請求項１から４のいずれか１項のモータにおいて、
    　前期固定子コア（13）は、前記複数のティース（12）の外周側に略円筒状のバックヨーク部（11）を有し、
    　前記第３巻線（153）のコイルエンドの一部は、前記バックヨーク部（11）の軸方向の端部上を通るように配置されるモータ。     In the motor according to any one of claims 1 to 4,
    The primary stator core (13) has a substantially cylindrical back yoke portion (11) on the outer peripheral side of the plurality of teeth (12),
    A motor in which a part of the coil end of the third winding (153) passes over an axial end of the back yoke portion (11).
  6. 　請求項１から５のいずれか１項のモータにおいて、
    　前記複数の巻線（151,152,153,154）は、少なくともアルミニウムを含む線材で構成されるモータ。     In the motor according to any one of claims 1 to 5,
    The motor, wherein the plurality of windings (151, 152, 153, 154) are made of a wire containing at least aluminum.
  7. 　請求項１から６のいずれか１項のモータにおいて、
    　前記複数の巻線（151,152,153,154）は、前記第１巻線（151）、前記第２巻線（152）及び前記第３巻線（153）と巻数が同じで巻き形状が異なる第４巻線（154）をさらに含み、
    　前記第４巻線（154）は、前記複数のティース（12）のうち対応する第４ティース（12d）の周方向一方側に、前記第３形状と略等しい第７形状を有すると共に、前記第４ティース（12d）の周方向他方側に、前記第２形状と略等しい第８形状を有し、
    　前記第７形状と前記第８形状とは互いに嵌合して、前記スロット（14）に収納可能な形状を構成し、
    　前記第７形状の内周側幅は、前記第７形状の外周側幅と同等か又は当該外周側幅よりも大きいモータ。     In the motor according to any one of claims 1 to 6,
    The plurality of windings (151, 152, 153, 154) is a fourth winding ( 154) further comprising
    The fourth winding (154) has a seventh shape substantially equal to the third shape on one side in the circumferential direction of the corresponding fourth tooth (12d) of the plurality of teeth (12). having an eighth shape substantially equal to the second shape on the other circumferential side of the four teeth (12d),
    The seventh shape and the eighth shape are fitted together to form a shape that can be accommodated in the slot (14),
    The inner peripheral width of the seventh shape is equal to or greater than the outer peripheral width of the seventh shape.
  8. 　請求項７のモータにおいて
    　前記第８形状の内周側幅は、前記第８形状の外周側幅と同等か又は当該外周側幅よりも小さいモータ。     8. The motor according to claim 7, wherein the inner width of the eighth shape is equal to or smaller than the outer width of the eighth shape.
  9. 　請求項１から８のいずれか１項のモータにより駆動される圧縮機。 A compressor driven by the motor according to any one of claims 1 to 8.
  10. 　請求項１から８のいずれか１項のモータにより駆動される圧縮機を備える冷凍装置。 A refrigeration system comprising a compressor driven by the motor according to any one of claims 1 to 8.
PCT/JP2022/000615 2021-01-27 2022-01-12 Motor, compressor, and refrigeration device WO2022163342A1 (en)

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JP2002199640A (en) * 2000-12-28 2002-07-12 Toyota Motor Corp Rotary electric machine
JP2009077480A (en) * 2007-09-19 2009-04-09 Mitsubishi Electric Corp Rotary motor

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