WO2019235071A1 - Rotating electric machine stator and rotating electric machine - Google Patents

Rotating electric machine stator and rotating electric machine Download PDF

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Publication number
WO2019235071A1
WO2019235071A1 PCT/JP2019/016170 JP2019016170W WO2019235071A1 WO 2019235071 A1 WO2019235071 A1 WO 2019235071A1 JP 2019016170 W JP2019016170 W JP 2019016170W WO 2019235071 A1 WO2019235071 A1 WO 2019235071A1
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WO
WIPO (PCT)
Prior art keywords
insulator
stator
iron core
teeth
electrical machine
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Application number
PCT/JP2019/016170
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French (fr)
Japanese (ja)
Inventor
本橋　昌也
Original Assignee
三菱電機株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 三菱電機株式会社 filed Critical 三菱電機株式会社
Priority to JP2020523552A priority Critical patent/JP6910550B2/en
Priority to CN201980016353.1A priority patent/CN112236925B/en
Publication of WO2019235071A1 publication Critical patent/WO2019235071A1/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
    • H02K15/02—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/32—Windings characterised by the shape, form or construction of the insulation
    • H02K3/34—Windings characterised by the shape, form or construction of the insulation between conductors or between conductor and core, e.g. slot insulation

Definitions

  • the present application relates to a rotating electrical machine stator and a rotating electrical machine that can prevent an increase in iron loss and improve performance.
  • an iron core having a plurality of slots in which windings are housed, an insulator disposed on both end surfaces in the axial direction of the iron core to electrically insulate between the windings and the iron core teeth, and the slots
  • the insulator is made of slot insulating paper that is electrically insulated between the winding and the inner peripheral surface of the iron core, and the insulator extends toward the slot that electrically insulates the winding from the iron core.
  • the slot is dimensioned such that both ends of the axial method are larger than the middle part so as to accommodate the insulator wall, i.e., in iron core teeth, both dimensions of the axial method are smaller than the middle part.
  • the slot insulating paper is arranged at both ends in the axial direction so as to overlap the winding side surface of the wall portion of the insulator, so that a winding space is formed inside the slot. Eliminating space of the insulator wall to lack, it has been proposed to increase the conductor cross section (e.g., see Patent Document 1).
  • the stator iron core is formed so that the circumferential width of both ends in the axial direction of the teeth is thinner than the circumferential width of the intermediate portion in order to accommodate the insulator wall portion.
  • the iron loss increases compared to the iron core having the same circumferential width at both ends in the axial direction as the circumferential width of the intermediate portion, leading to a decrease in the performance of the rotating electrical machine. This is more likely to affect the shorter the axial length of the iron core.
  • the shapes of both ends in the axial direction of the teeth and the intermediate portion are different, there is a problem in that the number of molds and processes for manufacturing the iron core is increased, and the cost of the iron core is increased.
  • the present application discloses a technique for solving the above-described problems, and an object thereof is to provide a stator of a rotating electrical machine and a rotating electrical machine that can prevent an increase in iron loss and improve performance.
  • the stator of the rotating electrical machine disclosed in the present application is At least one yoke portion is disposed in the circumferential direction, and the yoke is formed in an annular shape; and On the inner peripheral surface in the radial direction of the yoke portion, there is a teeth portion protruding inward in the radial direction,
  • the teeth part has an iron core having a shoe part formed to protrude in the circumferential direction on both sides in the circumferential direction of the radially inner tip, A first insulator portion having insulating properties respectively installed at both axial ends along the central axis of the iron core;
  • a second insulator portion having an insulating shape, A coil portion wound around the first insulator portion and the second insulator portion on the teeth portion; At both ends in the axial direction of the yoke portion, there are recesses on the outer peripheral surface on the outer side in the radial direction, The second insulator part has protrusions formed at both ends in the axial direction of the iron core so as to protrude from both ends, The first insulator portion is in contact with the protruding portion of the second insulator portion, and between the first protrusion portion inserted into the concave portion of the iron core and the radially outer side surface of each shoe portion. And a second projecting portion sandwiching the second insulator portion.
  • the rotating electrical machine disclosed in the present application is the stator of the rotating electrical machine described above, A frame in which the stator is arranged radially inside;
  • the rotor is disposed inside the stator in the radial direction and includes a rotor rotatably supported by the frame.
  • stator and the rotating electrical machine disclosed in the present application it is possible to prevent an increase in iron loss and improve the performance.
  • FIG. 3 is a top view illustrating a configuration of a stator of the rotating electrical machine according to the first embodiment. It is a perspective view which shows the structure of the split iron core of a stator shown in FIG. 1, a 1st insulator part, and a 2nd insulator part. It is a perspective view which shows the structure of the division
  • FIG. 3 is a partial enlarged perspective view showing a configuration of a split iron core and a first insulator part shown in FIG. 2. It is a top view which shows the structure of the rotary electric machine using the stator shown in FIG. It is the perspective view which showed the manufacturing method of the stator shown in FIG. It is the perspective view which showed the manufacturing method of the stator shown in FIG. 6 is a perspective view showing another configuration of the first insulator portion of the stator of the rotating electrical machine according to Embodiment 1. FIG. 6 is a perspective view showing another configuration of the first insulator portion of the stator of the rotating electrical machine according to Embodiment 1. FIG. FIG. FIG. FIG.
  • FIG. 6 is a partially enlarged perspective view showing a configuration of a split iron core, a first insulator part, and a second insulator part of a stator of a rotating electrical machine according to a second embodiment. It is a top view which shows the structure of the 1st insulator part installed in the division
  • each direction in the rotating electrical machine is indicated as a circumferential direction Z
  • a direction along the rotational axis of the rotating electrical machine is indicated as an axial direction Y
  • a radial direction X is indicated as an outer side X1 in the radial direction X
  • an inner side X2 in the radial direction X.
  • FIG. 1 is a top view showing the configuration of the stator 100 of the rotating electrical machine 1 according to the first embodiment.
  • FIG. 2 is a perspective view showing a configuration in which the first insulator portion 130 and the second insulator portion 120 are installed on the split iron core 110 of the stator 100 shown in FIG. 1.
  • FIG. 3 is a perspective view for explaining a state in which the second insulator portion 120 is installed in the split iron core 110 shown in FIG.
  • FIG. 4 is a perspective view illustrating a configuration of the first insulator unit 130 illustrated in FIG. 2.
  • FIG. 5 is a plan view showing a configuration of the first insulator unit 130 shown in FIG. 4 viewed from the direction of arrow A.
  • FIG. 6 is a partially enlarged perspective view showing a configuration on the upper side of the paper in the axial direction Y of the configuration in which the first insulator portion 130 and the second insulator portion 120 are installed on the split iron core 110 shown in FIG.
  • FIG. 7 is a partially enlarged perspective view showing a lower configuration on the paper surface in the axial direction Y of the configuration in which the first insulator portion 130 and the second insulator portion 120 are installed in the split iron core 110 shown in FIG. 2.
  • the split iron core 110 is shown in a state in which a part of the number is stacked in the axial direction Y.
  • FIG. 8 is a top view showing a configuration of the rotating electrical machine 1 using the stator 100 shown in FIG.
  • each figure other than FIG. 8 shows the state before forming the coil part 9 for convenience.
  • FIG. 9 and 10 are perspective views showing a manufacturing method in which the first insulator part 130 and the second insulator part 120 are installed on the split core 110 of the stator 100 shown in FIG. 11 and 12 are perspective views showing another configuration of the first insulator portion 130 of the stator 100 of the rotating electrical machine 1 according to the first embodiment.
  • the rotating electrical machine 1 is disposed on the stator 100 in which the coil portion 9 is formed, the frame 2 in which the stator 100 is disposed on the outer side X1 in the radial direction X, and the inner side X2 of the stator 100 in the radial direction X.
  • a rotor 4 having a rotation shaft 3 supported by the frame 2 so as to be rotatable.
  • the stator 100 of the rotating electrical machine 1 includes an iron core 10 and a coil portion 9 (see FIG. 8).
  • the iron core 10 is formed on the inner surface 11 of the yoke 5 formed in an annular shape and the inner side X2 of the yoke 5 in the radial direction X so as to protrude from the inner side X2 of the radial direction X at a predetermined interval in the circumferential direction Z.
  • the iron core 10 is formed by annularly arranging a plurality of divided iron cores 110 divided in the circumferential direction Z.
  • the iron core 10 is formed by punching out electromagnetic steel sheets and laminating a plurality of the punched electromagnetic steel sheets in the axial direction Y.
  • one divided core 110 has one tooth portion 112 and one yoke portion 111. Therefore, the yoke 5 of the iron core 10 is formed in a ring shape by arranging a plurality of yoke portions 111 of the split iron core 110 in the circumferential direction Z. At both ends of the yoke portion 111 in the axial direction Y, concave portions 117 are formed on the outer peripheral surface 12 of the outer side X1 in the radial direction X, respectively. The said recessed part 117 is formed for every division
  • the recess 117 may be formed continuously from one end to the other end in the axial direction Y of the outer peripheral surface 12 of the yoke portion 111 of the split iron core 110.
  • the recessed part 117 is not limited to the said shape, The case where it forms in the hole shape which has the function similar to the said recessed part 117 is also considered.
  • the teeth portion 112 has shoe portions 114 formed to protrude in the circumferential direction Z on both sides in the circumferential direction Z of the tip of the inner side X2 in the radial direction X. Between the divided cores 110 adjacent to each other in the circumferential direction Z, a slot 113 (see FIG. 1) for forming the coil portion 9 is formed.
  • the coil part 9 is wound around each tooth part 112 via a first insulator part 130 and a second insulator part 120, which will be described later, and housed in a slot 113.
  • the second insulator portion 120 has an insulating property and is formed in a sheet shape.
  • the second insulator portion 120 includes, in the tooth portion 112, on the side surfaces 21 at both ends in the circumferential direction Z of the tooth portion 112, on the inner peripheral surface 11 of the yoke portion 111 extending from the side surface 21, and the diameter of each shoe portion 114. It is installed on the side surface 41 of the outside X1 in the direction X.
  • the second insulator unit 120 may be in the form of a sheet, and is formed of, for example, insulating paper or an insulating film. Therefore, the second insulator portion 120 is installed in the slot 113, and insulates the divided core 110 from the coil portion 9 in the slot 113.
  • the second insulator portion 120 is formed such that the length in the axial direction Y is longer than the length in the axial direction of the divided core 110, and the protruding portions 121 that protrude from both ends are provided at both ends in the axial direction Y of the divided core 110.
  • the 1st insulator part 130 is each installed in the both ends of the axial direction Y of the split iron core 110, and has insulation.
  • the first insulator portion 130 is between the first protrusion 132 inserted into the recess 117 of the split core 110 and the side surface 41 of the outer side X ⁇ b> 1 in the radial direction X of each shoe portion 114. It has the 2nd projection part 133 on which the 2nd insulator part 120 is pinched
  • the first insulator portion 130 is formed so as to be in contact with the protruding portion 121 of the second insulator portion 120.
  • the protruding portion 121 of the second insulator portion 120 is in contact with the first insulator portion 130 and overlaps with each other, so that the portion is formed as a portion that ensures electrical insulation performance.
  • connect in the axial direction Y is the part of the protrusion part 121 of the 2nd insulator part 120, and the shape of the split iron core 110 is not influenced. Therefore, the split iron core 110 can be formed in the same shape from the upper side to the lower side in the axial direction Y as shown in the upper diagram on the paper surface of FIG.
  • the first insulator portion 130 is formed with a groove portion 131 corresponding to the sheet-like thickness of the second insulator portion 120 at a location in contact with the protruding portion 121 of the second insulator portion 120.
  • the width W1 in the circumferential direction Z on the tooth portion 112 of the first insulator portion 130 is larger than the width W2 (see FIG. 3) in the circumferential direction Z of the tooth portion 112.
  • the second insulator portion 120 is formed to be twice as large as the sheet-like thickness, that is, the width of the groove 131.
  • the said groove part 131 becomes a space in which the protrusion part 121 of the 2nd insulator part 120 is accommodated.
  • the protruding part 121 of the second insulator part 120 is accommodated in the groove part 131 of the first insulator part 130.
  • the both ends of the axial direction Y of the groove part 131 of the 1st insulator part 130 become the arrangement
  • the first protrusion 132 of the first insulator portion 130 is inserted into the concave portion 117 of the split iron core 110, so the arrangement of the first insulator portion 130 with respect to the split iron core 110 is arranged in the radial direction X. And restrained in the circumferential direction Z.
  • the second protrusion 133 of the first insulator part 130 sandwiches the second insulator part 120 between the side surface 41 of the outer side X1 of each shoe part 114 in the radial direction X, the second insulator 133 is opposed to the split iron core 110.
  • the arrangement of the part 120 is restricted in the circumferential direction Z.
  • the first protrusion 132 is inserted into the recess 117 provided in the yoke portion 111 of the split core 110, and the second protrusion 133 is fitted so as to cover both ends of the shoe portion 114. Thereby, positioning of the 1st insulator part 130 with respect to the split iron core 110 is performed.
  • FIGS. 9 and 10 A manufacturing method in which the first insulator portion 130 and the second insulator portion 120 are installed on the split core 110 of the stator 100 of the rotating electrical machine 1 according to the first embodiment configured as described above will be described with reference to FIGS. 9 and 10.
  • jigs 125 that suck or grip the second insulator portion 120 are installed on both sides in the circumferential direction Z of the split iron core 110 (state on the left side in FIG. 9).
  • tool 125 is pushed so that it may approach in the circumferential direction Z of the division
  • the bent portions of the second insulator portion 120 are connected to the side surfaces 41 on both ends in the circumferential direction Z of the teeth portion 112 from the side surfaces 41 on the outer side X1 in the radial direction X of the shoe portion 114 as shown in the lower view on the paper surface of FIG. 21 and a second curved portion 128 extending from the side surface 21 at both ends in the circumferential direction Z of the tooth portion 112 to the inner peripheral surface 11 of the yoke portion 111 extending to the side surface 21.
  • the bending angle of the first bent portion 127 and the second bent portion 128 is set to be the same angle along each surface of the divided core 110 described above when the second insulator portion 120 is attached to the divided core 110. Is done.
  • the teeth part 112, the yoke part 111, and the shoe part 114 of the split core 110 of the jig 125 are provided.
  • the portion along the core is formed at a (large) angle that is 1 to 2 degrees open with respect to the angle formed by the teeth 112 and the yoke 111 and the teeth 112 and the shoes 114 of the split core 110.
  • the second protrusion 133 of the first insulator 130 is inserted into the notch 126 of the jig 125 from the axial direction Y, and the second insulator 120 is sandwiched and pressed.
  • the jig 125 of the second insulator part 120 is opened, and the installation of the second insulator part 120 and the first insulator part 130 on the split iron core 110 is completed.
  • the coil portion 9 is formed by winding a conductive wire around the tooth portion 112.
  • the stator 100 is formed by assembling a plurality of split iron cores 110 on which the coil portions 9 are formed in an annular shape. And the rotor 4 and the stator 100 are installed in the flame
  • a first tapered portion 136 that narrows in the direction away from the first insulator portion 130 side may be formed on the first protrusion 132 of the first insulator portion 130. If formed in this way, the insertion property of the first protrusion 132 into the recess 117 of the yoke 111 is improved.
  • a second taper portion 138 that narrows in a direction away from the first insulator portion 130 side may be formed on the second protrusion 133 of the first insulator portion 130. If formed in this way, the interference between the second insulator part 120 and the second projection part 133 due to the warp or turning of the second insulator part 120 is suppressed, and the insertability is improved.
  • the shape of the split core is changed so that the circumferential width at both ends in the axial direction is changed to the intermediate circumferential width in the axial direction. It is not necessary to make it thinner. Therefore, according to this Embodiment 1, the volume of a division
  • the shape of the split iron core can be formed in the same shape in the axial direction, so that the mold cost and the manufacturing cost are reduced. Can be prevented.
  • the portion corresponding to the first insulator portion is not formed extending in the slot in the axial direction. Therefore, according to the first embodiment, the space in the slot can be reliably ensured. The fall of the space factor of a coil part can be prevented.
  • At least one yoke portion is disposed in the circumferential direction, and the yoke is formed in an annular shape; and On the inner peripheral surface in the radial direction of the yoke portion, there is a teeth portion protruding inward in the radial direction,
  • the teeth part has an iron core having a shoe part formed to protrude in the circumferential direction on both sides in the circumferential direction of the radially inner tip, A first insulator portion having insulating properties respectively installed at both axial ends along the central axis of the iron core;
  • a second insulator portion having an insulating shape, A coil portion wound around the first insulator portion and the second insulator portion on the teeth portion; At both ends in the axial direction of the yoke portion, there are recesses on the outer peripheral surface on the outer side in the radial direction, The second insulator part has protrusions formed at both ends in the axial direction of the iron core so as to protrude from both ends, The first insulator portion is in contact with the protruding portion of the second insulator portion, and between the first protrusion portion inserted into the concave portion of the iron core and the radially outer side surface of each shoe portion. In this case, since the second protrusion portion sandwiches the second insulator portion, an increase in iron loss can be prevented and a stator with improved performance can be obtained.
  • the iron core in the slot of the iron core, it is possible to configure without the intrusion of the wall surface of the first insulator part which reduces the space for housing the coil part. Therefore, the iron core can be formed in the same size from the upper side to the lower side in the axial direction. As a result, there is no decrease in the volume of the iron core, an increase in iron loss can be prevented, and the performance of the rotating electrical machine can be improved. This is particularly effective for models in which the axial length of the iron core is short. Moreover, since the resin material used for the wall surface which penetrates into the slot of the 1st insulator part becomes unnecessary, it is effective also in reduction of material cost.
  • the first protrusion of the first insulator portion is formed with a first taper portion that becomes narrower in a direction away from the first insulator portion side, A stator having improved insertability, excellent position accuracy and assembly accuracy, and excellent workability can be obtained.
  • the second protrusion portion of the first insulator portion is formed with a second taper portion that narrows in a direction away from the first insulator portion side, the second insulator portion and the second protrusion portion Interference is suppressed, warping or turning of the second insulator portion is prevented, and a stator that improves insertability and excellent workability can be obtained.
  • the first insulator portion is formed with a groove portion having a sheet-like thickness of the second insulator portion at a position in contact with the protruding portion of the second insulator portion, the axial direction of the second insulator portion A stator that can prevent the displacement is obtained.
  • the iron core is formed of a split iron core that is divided into a plurality in the circumferential direction, Each of the divided iron cores is formed with the recess, Since the first protrusions to be inserted into the recesses are formed in the first insulator portion, a stator that can hold the first insulator portion for each divided iron core can be obtained.
  • stator of the rotating electrical machine described above A frame in which the stator is arranged radially inside; Since the rotor is disposed on the inner side in the radial direction of the stator and is rotatably supported by the frame, a stator with excellent performance can be obtained, and thus a rotating electrical machine with excellent performance can be obtained. Can be obtained.
  • FIG. FIG. 13 is a partially enlarged perspective view showing a configuration on the upper side in the axial direction Y of the configuration in which the first insulator portion 130 and the second insulator portion 120 are installed in the split core 110 of the stator 100 of the rotating electrical machine 1 according to the second embodiment. It is.
  • FIG. 14 is a plan view showing the configuration of the first insulator portion 130 installed in the split iron core 110 shown in FIG. In the figure, the same parts as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.
  • the groove portion 131 is formed in the first insulator portion 130 that accommodates the protruding portion 121 of the second insulator portion 120 .
  • the width W3 (see FIG. 14) in the circumferential direction Z on the tooth portion 112 of the first insulator portion 130 is formed to have the same width as the width W2 (see FIG. 3) in the circumferential direction Z of the tooth portion 112.
  • a groove 131 for sandwiching the second insulator 120 is formed on the inner side X2 of the second protrusion 133 in the radial direction X.
  • the second insulator portion 120, the first insulator portion 130, and the split iron core 110 are fixed by an adhesive, a double-sided tape or the like. Since other shapes and manufacturing methods are the same as those of the first embodiment, description thereof is omitted.
  • the first insulator portion is on the teeth portion as well as the same effect as the first embodiment. Since the circumferential width is the same as the circumferential width of the teeth portion, no groove is formed in the first insulator portion, so the shape of the first insulator portion can be simplified and the mold cost can be reduced. Can be reduced.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Insulation, Fastening Of Motor, Generator Windings (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)

Abstract

This rotating electric machine stator is provided with: an iron core (10) having a yoke portion (111) having a recess portion (117) on the outer circumferential surface (12) thereof and a plurality of tooth portions (112) having a shoe portion (114); and a coil portion (11) wound around each of the tooth portions (112) with a first insulator portion (130) and a second insulator portion (120) interposed therebetween. The second insulator portion (120) is provided in a slot (113) between the tooth portions (112), is formed to be sheet-shaped and have electrical insulation properties, and has a projection portion (121) projecting from both ends of the iron core (10) in the shaft direction (Y). The first insulator portion (130) is provided with: a first projection portion (132) installed at both ends of the iron core (10) in the shaft direction (Y), having electrical insulation properties, making contact with the projection portion (121), and inserted into the recess portion (117); and a second projection portion (133) for sandwiching the second insulator portion (120) between the side surface (41) of the shoe portion (114) on the outside (X1) in the radial direction (X) and the second projection portion (133).

Description

回転電機の固定子および回転電機Rotating electric machine stator and rotating electric machine
　本願は、鉄損の増加を防止でき、性能が向上する回転電機の固定子および回転電機に関するものである。 The present application relates to a rotating electrical machine stator and a rotating electrical machine that can prevent an increase in iron loss and improve performance.
　従来の回転電機において、巻線が収納される複数のスロットを有する鉄心と、前記鉄心の軸方向両端面に配置されて前記巻線と鉄心ティースとの間を電気絶縁するインシュレータと、前記スロットに挿入されて前記巻線と鉄心の内周面との間を電気絶縁するスロット絶縁紙からなり、前記インシュレータは前記巻線と前記鉄心とを電気絶縁するスロット内に向かって延設された壁部を一体に有し、かつ前記スロットは前記インシュレータ壁部を収納するように軸方法両端部が中間部分よりも大なる寸法、すなわち鉄心ティースにおいては前記軸方法両端部が中間部分より小なる寸法とし、さらに前記スロット絶縁紙が軸方向の両端で、前記インシュレータの壁部の巻線側の面に重なるように配置することで、スロット内部に巻線スペースを減少させるインシュレータ壁部のスペースを無くし、電線断面積を大きくすることが提案されている（例えば、特許文献１参照）。 In a conventional rotating electrical machine, an iron core having a plurality of slots in which windings are housed, an insulator disposed on both end surfaces in the axial direction of the iron core to electrically insulate between the windings and the iron core teeth, and the slots The insulator is made of slot insulating paper that is electrically insulated between the winding and the inner peripheral surface of the iron core, and the insulator extends toward the slot that electrically insulates the winding from the iron core. And the slot is dimensioned such that both ends of the axial method are larger than the middle part so as to accommodate the insulator wall, i.e., in iron core teeth, both dimensions of the axial method are smaller than the middle part. Further, the slot insulating paper is arranged at both ends in the axial direction so as to overlap the winding side surface of the wall portion of the insulator, so that a winding space is formed inside the slot. Eliminating space of the insulator wall to lack, it has been proposed to increase the conductor cross section (e.g., see Patent Document 1).
　また、他の従来の回転電機においては、前記特許文献１とほぼ同様の構成を分割鉄心としたものが提案されている。さらに、前記鉄心ティースの軸方法両端部が中間部分より小なる寸法に一部切り欠きを設け、前記切り欠きに対するインシュレータの部位を厚くすることで強度向上、位置決め性向上に寄与できることが提案されている（例えば、特許文献２参照）。 Further, in other conventional rotating electric machines, a structure in which a configuration similar to that of Patent Document 1 is used as a split iron core has been proposed. Further, it has been proposed that the both ends of the axial method of the iron core teeth have a notch in a size smaller than the middle part, and that the thickness of the insulator portion with respect to the notch can be increased, thereby contributing to improvement in strength and positioning. (For example, refer to Patent Document 2).
特開２００１－１１２２０５号公報JP 2001-112205 A 特開２０１７－１０３８５０号公報JP 2017-103850 A
　従来の回転電機における固定子の鉄心は、前記インシュレータ壁部を収納するためにティースの軸方向両端部の周方向の幅を中間部の周方向の幅に比べて細く形成しているため、ティースの軸方向両端部の周方向の幅が中間部の周方向の幅と同じ鉄心と比較し鉄損が増加し、回転電機の性能の低下に繋がるという問題点があった。これは鉄心の軸方向長さが短いものほど影響しやすい。また、ティースの軸方向両端部と中間部の形状が異なるため、鉄心を製造するための金型および工程が増え、鉄心のコストが増加するという問題点があった。 In the conventional rotating electric machine, the stator iron core is formed so that the circumferential width of both ends in the axial direction of the teeth is thinner than the circumferential width of the intermediate portion in order to accommodate the insulator wall portion. There is a problem in that the iron loss increases compared to the iron core having the same circumferential width at both ends in the axial direction as the circumferential width of the intermediate portion, leading to a decrease in the performance of the rotating electrical machine. This is more likely to affect the shorter the axial length of the iron core. In addition, since the shapes of both ends in the axial direction of the teeth and the intermediate portion are different, there is a problem in that the number of molds and processes for manufacturing the iron core is increased, and the cost of the iron core is increased.
　本願は、上記のような課題を解決するための技術を開示するものであり、鉄損の増加を防止でき、性能が向上する回転電機の固定子および回転電機を提供することを目的とする。 The present application discloses a technique for solving the above-described problems, and an object thereof is to provide a stator of a rotating electrical machine and a rotating electrical machine that can prevent an increase in iron loss and improve performance.
　本願に開示される回転電機の固定子は、
少なくとも１つのヨーク部が周方向に配置され、環状に形成されるヨーク、および、
前記ヨーク部の径方向の内側の内周面に、径方向の内側に突出したティース部を有し、
前記ティース部は、径方向の内側の先端の周方向の両側に、周方向にそれぞれ突出して形成されたシュー部を有する鉄心と、
前記鉄心の中心軸に沿った軸方向の両端にそれぞれ設置された絶縁性を有する第一インシュレータ部と、
前記ティース部において、前記ティース部の周方向の両端の側面上、当該側面から延在する前記ヨーク部の内周面上、および各前記シュー部の径方向の外側の側面上に設置されたシート状の絶縁性を有する第二インシュレータ部と、
前記ティース部に前記第一インシュレータ部および前記第二インシュレータ部を介して巻回されたコイル部とを備え、
前記ヨーク部の軸方向の両端には、径方向の外側の外周面に凹部をそれぞれ有し、
前記第二インシュレータ部は、前記鉄心の軸方向の両端に、当該両端から突出して形成された突出部をそれぞれ有し、
前記第一インシュレータ部は、前記第二インシュレータ部の前記突出部と接するとともに、前記鉄心の前記凹部に挿入される第一突起部、および、各前記シュー部の径方向の外側の側面との間において前記第二インシュレータ部を挟む第二突起部とを有するものである。
　また、本願に開示される回転電機は、上記に記載の回転電機の固定子と、
前記固定子を径方向の内側に配置したフレームと、
前記固定子の径方向の内側に配置されるとともに、回転可能に前記フレームに支持された回転子とを備えたものである。 The stator of the rotating electrical machine disclosed in the present application is
At least one yoke portion is disposed in the circumferential direction, and the yoke is formed in an annular shape; and
On the inner peripheral surface in the radial direction of the yoke portion, there is a teeth portion protruding inward in the radial direction,
The teeth part has an iron core having a shoe part formed to protrude in the circumferential direction on both sides in the circumferential direction of the radially inner tip,
A first insulator portion having insulating properties respectively installed at both axial ends along the central axis of the iron core;
In the teeth portion, seats installed on the side surfaces of both ends of the teeth portion in the circumferential direction, on the inner peripheral surface of the yoke portion extending from the side surfaces, and on the radially outer side surfaces of the shoe portions. A second insulator portion having an insulating shape,
A coil portion wound around the first insulator portion and the second insulator portion on the teeth portion;
At both ends in the axial direction of the yoke portion, there are recesses on the outer peripheral surface on the outer side in the radial direction,
The second insulator part has protrusions formed at both ends in the axial direction of the iron core so as to protrude from both ends,
The first insulator portion is in contact with the protruding portion of the second insulator portion, and between the first protrusion portion inserted into the concave portion of the iron core and the radially outer side surface of each shoe portion. And a second projecting portion sandwiching the second insulator portion.
Moreover, the rotating electrical machine disclosed in the present application is the stator of the rotating electrical machine described above,
A frame in which the stator is arranged radially inside;
The rotor is disposed inside the stator in the radial direction and includes a rotor rotatably supported by the frame.
　本願に開示される回転電機の固定子および回転電機によれば、鉄損の増加を防止でき、性能が向上する。 According to the stator and the rotating electrical machine disclosed in the present application, it is possible to prevent an increase in iron loss and improve the performance.
実施の形態１による回転電機の固定子の構成を示す上面図である。FIG. 3 is a top view illustrating a configuration of a stator of the rotating electrical machine according to the first embodiment. 図１に示した固定子の分割鉄心、第一インシュレータ部および第二インシュレータ部の構成を示す斜視図である。It is a perspective view which shows the structure of the split iron core of a stator shown in FIG. 1, a 1st insulator part, and a 2nd insulator part. 図２に示した分割鉄心および第二インシュレータ部の構成を示す斜視図である。It is a perspective view which shows the structure of the division | segmentation iron core shown in FIG. 2, and a 2nd insulator part. 図２に示した分割鉄心に設置される第一インシュレータ部の構成を示す斜視図である。It is a perspective view which shows the structure of the 1st insulator part installed in the division | segmentation iron core shown in FIG. 図４に示した第一インシュレータ部の構成を示す平面図である。It is a top view which shows the structure of the 1st insulator part shown in FIG. 図２に示した分割鉄心、第一インシュレータ部および第二インシュレータ部の構成を示す部分拡大斜視図である。It is a partial expansion perspective view which shows the structure of the division | segmentation iron core shown in FIG. 2, a 1st insulator part, and a 2nd insulator part. 図２に示した分割鉄心、および、第一インシュレータ部の構成を示す部分拡大斜視図である。FIG. 3 is a partial enlarged perspective view showing a configuration of a split iron core and a first insulator part shown in FIG. 2. 図１に示した固定子を用いた回転電機の構成を示す上面図である。It is a top view which shows the structure of the rotary electric machine using the stator shown in FIG. 図２に示した固定子の製造方法を示した斜視図である。It is the perspective view which showed the manufacturing method of the stator shown in FIG. 図２に示した固定子の製造方法を示した斜視図である。It is the perspective view which showed the manufacturing method of the stator shown in FIG. 実施の形態１による回転電機の固定子の第一インシュレータ部の他の構成を示す斜視図である。6 is a perspective view showing another configuration of the first insulator portion of the stator of the rotating electrical machine according to Embodiment 1. FIG. 実施の形態１による回転電機の固定子の第一インシュレータ部の他の構成を示す斜視図である。6 is a perspective view showing another configuration of the first insulator portion of the stator of the rotating electrical machine according to Embodiment 1. FIG. 実施の形態２による回転電機の固定子の分割鉄心、第一インシュレータ部および第二インシュレータ部の構成を示す部分拡大斜視図である。FIG. 6 is a partially enlarged perspective view showing a configuration of a split iron core, a first insulator part, and a second insulator part of a stator of a rotating electrical machine according to a second embodiment. 図１３に示した分割鉄心に設置される第一インシュレータ部の構成を示す平面図である。It is a top view which shows the structure of the 1st insulator part installed in the division | segmentation iron core shown in FIG.
　以下の説明において、回転電機における各方向を、周方向Ｚ、回転電機の回転軸に沿った方向を軸方向Ｙ、径方向Ｘ、径方向Ｘの外側Ｘ１、径方向Ｘの内側Ｘ２としてそれぞれ示す。よって、回転電機の固定子など他の部分においても、これらの方向を基準として各方向を示して説明する。 In the following description, each direction in the rotating electrical machine is indicated as a circumferential direction Z, a direction along the rotational axis of the rotating electrical machine is indicated as an axial direction Y, a radial direction X, an outer side X1 in the radial direction X, and an inner side X2 in the radial direction X. . Therefore, also in other parts such as a stator of a rotating electric machine, each direction will be described with reference to these directions.
実施の形態１．
　図１は、実施の形態１による回転電機１の固定子１００の構成を示す上面図である。図２は、図１に示した固定子１００の分割鉄心１１０に第一インシュレータ部１３０および第二インシュレータ部１２０を設置した構成を示す斜視図である。図３は、図２に示した分割鉄心１１０に第二インシュレータ部１２０を設置する状態を説明するための斜視図である。図４は、図２に示した第一インシュレータ部１３０の構成を示す斜視図である。図５は、図４に示した第一インシュレータ部１３０の矢印Ａの方向から視た構成を示す平面図である。 Embodiment 1 FIG.
FIG. 1 is a top view showing the configuration of the stator 100 of the rotating electrical machine 1 according to the first embodiment. FIG. 2 is a perspective view showing a configuration in which the first insulator portion 130 and the second insulator portion 120 are installed on the split iron core 110 of the stator 100 shown in FIG. 1. FIG. 3 is a perspective view for explaining a state in which the second insulator portion 120 is installed in the split iron core 110 shown in FIG. FIG. 4 is a perspective view illustrating a configuration of the first insulator unit 130 illustrated in FIG. 2. FIG. 5 is a plan view showing a configuration of the first insulator unit 130 shown in FIG. 4 viewed from the direction of arrow A.
　図６は、図２に示した分割鉄心１１０に第一インシュレータ部１３０および第二インシュレータ部１２０を設置した構成の軸方向Ｙの紙面上の上側の構成を示す部分拡大斜視図である。図７は、図２に示した分割鉄心１１０に第一インシュレータ部１３０および第二インシュレータ部１２０を設置した構成の軸方向Ｙの紙面上の下側の構成を示す部分拡大斜視図である。尚、図７において分割鉄心１１０は、軸方向Ｙにおいて、一部の枚数を積層した状態にて示している。図８は、図１に示した固定子１００を用いた回転電機１の構成を示す上面図である。尚、図８以外の各図は、便宜上、コイル部９を形成する前の状態を示す。 FIG. 6 is a partially enlarged perspective view showing a configuration on the upper side of the paper in the axial direction Y of the configuration in which the first insulator portion 130 and the second insulator portion 120 are installed on the split iron core 110 shown in FIG. FIG. 7 is a partially enlarged perspective view showing a lower configuration on the paper surface in the axial direction Y of the configuration in which the first insulator portion 130 and the second insulator portion 120 are installed in the split iron core 110 shown in FIG. 2. In FIG. 7, the split iron core 110 is shown in a state in which a part of the number is stacked in the axial direction Y. FIG. 8 is a top view showing a configuration of the rotating electrical machine 1 using the stator 100 shown in FIG. In addition, each figure other than FIG. 8 shows the state before forming the coil part 9 for convenience.
　図９および図１０は、図２に示した固定子１００の分割鉄心１１０に第一インシュレータ部１３０および第二インシュレータ部１２０を設置する製造方法を示した斜視図である。図１１および図１２は、実施の形態１による回転電機１の固定子１００の第一インシュレータ部１３０の他の構成を示す斜視図である。 9 and 10 are perspective views showing a manufacturing method in which the first insulator part 130 and the second insulator part 120 are installed on the split core 110 of the stator 100 shown in FIG. 11 and 12 are perspective views showing another configuration of the first insulator portion 130 of the stator 100 of the rotating electrical machine 1 according to the first embodiment.
　図８において、回転電機１は、コイル部９が形成された固定子１００と、固定子１００を径方向Ｘの外側Ｘ１に配置したフレーム２と、固定子１００の径方向Ｘの内側Ｘ２に配置されるとともに、回転可能に回転軸３がフレーム２に支持された回転子４とを備える。 In FIG. 8, the rotating electrical machine 1 is disposed on the stator 100 in which the coil portion 9 is formed, the frame 2 in which the stator 100 is disposed on the outer side X1 in the radial direction X, and the inner side X2 of the stator 100 in the radial direction X. And a rotor 4 having a rotation shaft 3 supported by the frame 2 so as to be rotatable.
　図１において、当該回転電機１の固定子１００は、鉄心１０と、コイル部９（図８参照）とを備える。鉄心１０は、環状に形成されたヨーク５と、ヨーク５の径方向Ｘの内側Ｘ２の内周面１１に、周方向Ｚに所定の間隔を隔てて、径方向Ｘの内側Ｘ２に突出して形成された複数のティース部１１２とを有する。鉄心１０は、周方向Ｚに分割された複数の分割鉄心１１０が環状に配列して形成される。鉄心１０は、電磁鋼板を打ち抜き、当該打ち抜いた電磁鋼板を軸方向Ｙに複数毎積層して形成される。 1, the stator 100 of the rotating electrical machine 1 includes an iron core 10 and a coil portion 9 (see FIG. 8). The iron core 10 is formed on the inner surface 11 of the yoke 5 formed in an annular shape and the inner side X2 of the yoke 5 in the radial direction X so as to protrude from the inner side X2 of the radial direction X at a predetermined interval in the circumferential direction Z. And a plurality of teeth portions 112. The iron core 10 is formed by annularly arranging a plurality of divided iron cores 110 divided in the circumferential direction Z. The iron core 10 is formed by punching out electromagnetic steel sheets and laminating a plurality of the punched electromagnetic steel sheets in the axial direction Y.
　図３に示すように、１つの分割鉄心１１０は、１つのティース部１１２および１つのヨーク部１１１を有する。よって、鉄心１０のヨーク５は、分割鉄心１１０のヨーク部１１１が周方向Ｚに複数配置され、環状に形成される。ヨーク部１１１の軸方向Ｙの両端には、径方向Ｘの外側Ｘ１の外周面１２に凹部１１７がそれぞれ形成される。当該凹部１１７は、分割鉄心１１０毎にそれぞれ形成される。また、凹部１１７は、分割鉄心１１０のヨーク部１１１の外周面１２の軸方向Ｙの一端から他端に連続して形成してもよい。また、凹部１１７は、当該形状に限定されるものではなく、当該凹部１１７と同様の機能を有する孔部形状にて形成する場合も考えられる。 As shown in FIG. 3, one divided core 110 has one tooth portion 112 and one yoke portion 111. Therefore, the yoke 5 of the iron core 10 is formed in a ring shape by arranging a plurality of yoke portions 111 of the split iron core 110 in the circumferential direction Z. At both ends of the yoke portion 111 in the axial direction Y, concave portions 117 are formed on the outer peripheral surface 12 of the outer side X1 in the radial direction X, respectively. The said recessed part 117 is formed for every division | segmentation iron core 110, respectively. Further, the recess 117 may be formed continuously from one end to the other end in the axial direction Y of the outer peripheral surface 12 of the yoke portion 111 of the split iron core 110. Moreover, the recessed part 117 is not limited to the said shape, The case where it forms in the hole shape which has the function similar to the said recessed part 117 is also considered.
　ティース部１１２は、径方向Ｘの内側Ｘ２の先端の周方向Ｚの両側に、周方向Ｚにそれぞれ突出して形成されたシュー部１１４を有する。周方向Ｚに隣り合う分割鉄心１１０間には、コイル部９を形成するためのスロット１１３（図１参照）が形成される。コイル部９は各ティース部１１２に後述する第一インシュレータ部１３０および第二インシュレータ部１２０を介して巻回され、スロット１１３に収納されて形成される。 The teeth portion 112 has shoe portions 114 formed to protrude in the circumferential direction Z on both sides in the circumferential direction Z of the tip of the inner side X2 in the radial direction X. Between the divided cores 110 adjacent to each other in the circumferential direction Z, a slot 113 (see FIG. 1) for forming the coil portion 9 is formed. The coil part 9 is wound around each tooth part 112 via a first insulator part 130 and a second insulator part 120, which will be described later, and housed in a slot 113.
　図３に示すように、第二インシュレータ部１２０は、絶縁性を有しシート状にて形成される。第二インシュレータ部１２０は、ティース部１１２において、ティース部１１２の周方向Ｚの両端の側面２１上、当該側面２１から延在するヨーク部１１１の内周面１１上、および各シュー部１１４の径方向Ｘの外側Ｘ１の側面４１上に設置される。第二インシュレータ部１２０は、シート状であればよく、例えば、絶縁紙、絶縁フィルムにて形成される。よって、第二インシュレータ部１２０は、スロット１１３に設置され、スロット１１３において分割鉄心１１０とコイル部９とを絶縁する。第二インシュレータ部１２０は、軸方向Ｙの長さが、分割鉄心１１０の軸方向の長さより長く形成され、分割鉄心１１０の軸方向Ｙの両端に、当該両端から突出する突出部１２１をそれぞれ有す。 As shown in FIG. 3, the second insulator portion 120 has an insulating property and is formed in a sheet shape. The second insulator portion 120 includes, in the tooth portion 112, on the side surfaces 21 at both ends in the circumferential direction Z of the tooth portion 112, on the inner peripheral surface 11 of the yoke portion 111 extending from the side surface 21, and the diameter of each shoe portion 114. It is installed on the side surface 41 of the outside X1 in the direction X. The second insulator unit 120 may be in the form of a sheet, and is formed of, for example, insulating paper or an insulating film. Therefore, the second insulator portion 120 is installed in the slot 113, and insulates the divided core 110 from the coil portion 9 in the slot 113. The second insulator portion 120 is formed such that the length in the axial direction Y is longer than the length in the axial direction of the divided core 110, and the protruding portions 121 that protrude from both ends are provided at both ends in the axial direction Y of the divided core 110. The
　図２に示すように、第一インシュレータ部１３０は、分割鉄心１１０の軸方向Ｙの両端にそれぞれ設置され、絶縁性を有する。図４に示すように、第一インシュレータ部１３０は、分割鉄心１１０の凹部１１７に挿入される第一突起部１３２、および、各シュー部１１４の径方向Ｘの外側Ｘ１の側面４１との間において第二インシュレータ部１２０を挟む第二突起部１３３を有する。 As shown in FIG. 2, the 1st insulator part 130 is each installed in the both ends of the axial direction Y of the split iron core 110, and has insulation. As shown in FIG. 4, the first insulator portion 130 is between the first protrusion 132 inserted into the recess 117 of the split core 110 and the side surface 41 of the outer side X <b> 1 in the radial direction X of each shoe portion 114. It has the 2nd projection part 133 on which the 2nd insulator part 120 is pinched | interposed.
　図２に示すように、第一インシュレータ部１３０は、第二インシュレータ部１２０の突出部１２１と接するように形成される。このように、第二インシュレータ部１２０の突出部１２１が、第一インシュレータ部１３０と接し、重なりあうことで、当該箇所が電気絶縁性能を確保する箇所として形成される。また、第一インシュレータ部１３０と第二インシュレータ部１２０とが軸方向Ｙにおいて接する部分は、第二インシュレータ部１２０の突出部１２１の部分であり、分割鉄心１１０の形状が影響されることはない。よって、分割鉄心１１０は、図３の紙面上の上図に示すように、軸方向Ｙの上側から下側において、全て同一形状にて形成可能となる。 As shown in FIG. 2, the first insulator portion 130 is formed so as to be in contact with the protruding portion 121 of the second insulator portion 120. As described above, the protruding portion 121 of the second insulator portion 120 is in contact with the first insulator portion 130 and overlaps with each other, so that the portion is formed as a portion that ensures electrical insulation performance. Moreover, the part which the 1st insulator part 130 and the 2nd insulator part 120 contact | connect in the axial direction Y is the part of the protrusion part 121 of the 2nd insulator part 120, and the shape of the split iron core 110 is not influenced. Therefore, the split iron core 110 can be formed in the same shape from the upper side to the lower side in the axial direction Y as shown in the upper diagram on the paper surface of FIG.
　さらに、図４に示すように、第一インシュレータ部１３０は、第二インシュレータ部１２０の突出部１２１と接する箇所に、第二インシュレータ部１２０のシート状の厚さ相当の溝部１３１が形成される。当該溝部１３１を形成するために、第一インシュレータ部１３０のティース部１１２上における周方向Ｚの幅Ｗ１（図５参照）は、ティース部１１２の周方向Ｚの幅Ｗ２（図３参照）より、第二インシュレータ部１２０のシート状の厚みの２倍分、すなわち、溝部１３１の幅分が大きく形成される。 Further, as shown in FIG. 4, the first insulator portion 130 is formed with a groove portion 131 corresponding to the sheet-like thickness of the second insulator portion 120 at a location in contact with the protruding portion 121 of the second insulator portion 120. In order to form the groove portion 131, the width W1 (see FIG. 5) in the circumferential direction Z on the tooth portion 112 of the first insulator portion 130 is larger than the width W2 (see FIG. 3) in the circumferential direction Z of the tooth portion 112. The second insulator portion 120 is formed to be twice as large as the sheet-like thickness, that is, the width of the groove 131.
　そして、図６および図７に示すように、当該溝部１３１は、第二インシュレータ部１２０の突出部１２１が収納されるスペースとなる。このように、第一インシュレータ部１３０の溝部１３１に、第二インシュレータ部１２０の突出部１２１が収まる。そして、第一インシュレータ部１３０の溝部１３１の軸方向Ｙの両端部は、突出部１２１の軸方向Ｙの両端に被さる配置となるため、第二インシュレータ部１２０が軸方向Ｙにずれることが防止される。 And as shown in FIG. 6 and FIG. 7, the said groove part 131 becomes a space in which the protrusion part 121 of the 2nd insulator part 120 is accommodated. Thus, the protruding part 121 of the second insulator part 120 is accommodated in the groove part 131 of the first insulator part 130. And since the both ends of the axial direction Y of the groove part 131 of the 1st insulator part 130 become the arrangement | positioning which covers the both ends of the axial direction Y of the protrusion part 121, it is prevented that the 2nd insulator part 120 shifts | deviates to the axial direction Y. The
　また、図７に示すように、第一インシュレータ部１３０の第一突起部１３２は、分割鉄心１１０の凹部１１７に挿入されるため、分割鉄心１１０に対し第一インシュレータ部１３０の配置が径方向Ｘおよび周方向Ｚで拘束される。 Further, as shown in FIG. 7, the first protrusion 132 of the first insulator portion 130 is inserted into the concave portion 117 of the split iron core 110, so the arrangement of the first insulator portion 130 with respect to the split iron core 110 is arranged in the radial direction X. And restrained in the circumferential direction Z.
　また、第一インシュレータ部１３０の第二突起部１３３は、各シュー部１１４の径方向Ｘの外側Ｘ１の側面４１との間において第二インシュレータ部１２０を挟むため、分割鉄心１１０に対し第二インシュレータ部１２０の配置が周方向Ｚで拘束される。 Further, since the second protrusion 133 of the first insulator part 130 sandwiches the second insulator part 120 between the side surface 41 of the outer side X1 of each shoe part 114 in the radial direction X, the second insulator 133 is opposed to the split iron core 110. The arrangement of the part 120 is restricted in the circumferential direction Z.
　また、第一インシュレータ部１３０は、分割鉄心１１０のヨーク部１１１に設けられた凹部１１７に第一突起部１３２を挿入し、シュー部１１４の両端に被さるように第二突起部１３３が嵌まりあうことで、分割鉄心１１０に対する第一インシュレータ部１３０の位置決めが行われる。 Further, in the first insulator portion 130, the first protrusion 132 is inserted into the recess 117 provided in the yoke portion 111 of the split core 110, and the second protrusion 133 is fitted so as to cover both ends of the shoe portion 114. Thereby, positioning of the 1st insulator part 130 with respect to the split iron core 110 is performed.
　上記のように構成された実施の形態１の回転電機１の固定子１００の分割鉄心１１０に第一インシュレータ部１３０および第二インシュレータ部１２０を設置する製造方法について図９および図１０を交えて説明する。まず、図９に示すように、分割鉄心１１０の周方向Ｚの両側に、第二インシュレータ部１２０を吸着または把持した治具１２５を設置する（図９の紙面上左側の状態）。そして、分割鉄心１１０の所定の箇所に第二インシュレータ部１２０が設置されるように、治具１２５を、分割鉄心１１０の周方向Ｚにおいて近づけるようにして押す（図９の紙面上右側の状態）。 A manufacturing method in which the first insulator portion 130 and the second insulator portion 120 are installed on the split core 110 of the stator 100 of the rotating electrical machine 1 according to the first embodiment configured as described above will be described with reference to FIGS. 9 and 10. To do. First, as shown in FIG. 9, jigs 125 that suck or grip the second insulator portion 120 are installed on both sides in the circumferential direction Z of the split iron core 110 (state on the left side in FIG. 9). And the jig | tool 125 is pushed so that it may approach in the circumferential direction Z of the division | segmentation iron core 110 so that the 2nd insulator part 120 may be installed in the predetermined location of the division | segmentation iron core 110 (state on the paper surface right side of FIG. 9). .
　この時、第二インシュレータ部１２０の折り曲げ部は、図３の紙面上の下図に示すように、シュー部１１４の径方向Ｘの外側Ｘ１の側面４１からティース部１１２の周方向Ｚの両端の側面２１にかけての第一曲部１２７と、ティース部１１２の周方向Ｚの両端の側面２１から当該側面２１に延在するヨーク部１１１の内周面１１にかけての第二曲部１２８とにて形成される。第一曲部１２７と第二曲部１２８との折り曲げ角度は、分割鉄心１１０に第二インシュレータ部１２０を装着すると、分割鉄心１１０の上記に示した各面に沿って同じ角度となるように設定される。 At this time, the bent portions of the second insulator portion 120 are connected to the side surfaces 41 on both ends in the circumferential direction Z of the teeth portion 112 from the side surfaces 41 on the outer side X1 in the radial direction X of the shoe portion 114 as shown in the lower view on the paper surface of FIG. 21 and a second curved portion 128 extending from the side surface 21 at both ends in the circumferential direction Z of the tooth portion 112 to the inner peripheral surface 11 of the yoke portion 111 extending to the side surface 21. The The bending angle of the first bent portion 127 and the second bent portion 128 is set to be the same angle along each surface of the divided core 110 described above when the second insulator portion 120 is attached to the divided core 110. Is done.
　尚、第二インシュレータ部１２０の浮き上がりによる、後工程にて設置する第一インシュレータ部１３０との干渉を防ぐため、治具１２５の分割鉄心１１０のティース部１１２とヨーク部１１１とシュー部１１４とに沿う箇所は、分割鉄心１１０のティース部１１２とヨーク部１１１、およびティース部１１２とシュー部１１４のなす角度に対し、１度～２度開いた（大きな）角度にて形成される。 In addition, in order to prevent interference with the first insulator part 130 installed in a later process due to the floating of the second insulator part 120, the teeth part 112, the yoke part 111, and the shoe part 114 of the split core 110 of the jig 125 are provided. The portion along the core is formed at a (large) angle that is 1 to 2 degrees open with respect to the angle formed by the teeth 112 and the yoke 111 and the teeth 112 and the shoes 114 of the split core 110.
　次に、図１０に示すように、治具１２５の切欠部１２６に第一インシュレータ部１３０の第二突起部１３３を軸方向Ｙから挿入し、第二インシュレータ部１２０を挟み込んで押さえる。第一インシュレータ部１３０を挿入後に、第二インシュレータ部１２０の治具１２５を開放し、分割鉄心１１０への第二インシュレータ部１２０および第一インシュレータ部１３０の設置を完了する。 Next, as shown in FIG. 10, the second protrusion 133 of the first insulator 130 is inserted into the notch 126 of the jig 125 from the axial direction Y, and the second insulator 120 is sandwiched and pressed. After inserting the first insulator part 130, the jig 125 of the second insulator part 120 is opened, and the installation of the second insulator part 120 and the first insulator part 130 on the split iron core 110 is completed.
　この後、ティース部１１２に導線を巻回してコイル部９を形成する。そして、コイル部９が形成された複数の分割鉄心１１０を環状に組み立てて固定子１００を形成する。そして、回転子４および固定子１００をフレーム２内に設置して回転電機１を形成する（図８）。 Thereafter, the coil portion 9 is formed by winding a conductive wire around the tooth portion 112. Then, the stator 100 is formed by assembling a plurality of split iron cores 110 on which the coil portions 9 are formed in an annular shape. And the rotor 4 and the stator 100 are installed in the flame | frame 2, and the rotary electric machine 1 is formed (FIG. 8).
　上記図４に示した第一インシュレータ部１３０の例以外の他の構成も可能であり、その例について説明する。図１１に示すように、第一インシュレータ部１３０の第一突起部１３２に、第一インシュレータ部１３０側より離れる方向に向かって細くなる第一テーパ部１３６を形成してもよい。このように形成すれば、第一突起部１３２のヨーク部１１１の凹部１１７への挿入性が向上する。 Other configurations other than the example of the first insulator unit 130 shown in FIG. 4 are possible, and an example thereof will be described. As shown in FIG. 11, a first tapered portion 136 that narrows in the direction away from the first insulator portion 130 side may be formed on the first protrusion 132 of the first insulator portion 130. If formed in this way, the insertion property of the first protrusion 132 into the recess 117 of the yoke 111 is improved.
　また、図１２に示すように、第一インシュレータ部１３０の第二突起部１３３に、第一インシュレータ部１３０側より離れる方向に向かって細くなる第二テーパ部１３８を形成してもよい。このように形成すれば、第二インシュレータ部１２０の反りまたはめくれなどによる、第二インシュレータ部１２０と第二突起部１３３との干渉が抑制され、挿入性を向上する。 Further, as shown in FIG. 12, a second taper portion 138 that narrows in a direction away from the first insulator portion 130 side may be formed on the second protrusion 133 of the first insulator portion 130. If formed in this way, the interference between the second insulator part 120 and the second projection part 133 due to the warp or turning of the second insulator part 120 is suppressed, and the insertability is improved.
　以上に示したように、実施の形態１は形成されているため、従来のように、分割鉄心の形状を、軸方向の両端の周方向の幅を、軸方向の中間の周方向の幅に比べ細く形成する必要がない。よって、本実施の形態１によれば、分割鉄心の体積が減少せず、鉄損の増加が防止できる。 As described above, since the first embodiment is formed, as in the prior art, the shape of the split core is changed so that the circumferential width at both ends in the axial direction is changed to the intermediate circumferential width in the axial direction. It is not necessary to make it thinner. Therefore, according to this Embodiment 1, the volume of a division | segmentation iron core does not reduce and the increase in a core loss can be prevented.
　また、本実施の形態１によれば、分割鉄心の形状を軸方向において、同一の形状にて形成できるため、従来のように、分割鉄心が複数の形状とならないため、金型コストおよび製造コストの増加を防止できる。また、従来のように、第一インシュレータ部に相当する箇所が、軸方向において、スロット内に延在して形成されないため、本実施の形態１によれば、スロット内のスペースを確実に確保でき、コイル部の占積率の低下を防止できる。 Further, according to the first embodiment, since the shape of the split iron core can be formed in the same shape in the axial direction, the split iron core does not have a plurality of shapes as in the prior art, so that the mold cost and the manufacturing cost are reduced. Can be prevented. In addition, unlike the prior art, the portion corresponding to the first insulator portion is not formed extending in the slot in the axial direction. Therefore, according to the first embodiment, the space in the slot can be reliably ensured. The fall of the space factor of a coil part can be prevented.
　上記のように構成された実施の形態１の回転電機の固定子によれば、
少なくとも１つのヨーク部が周方向に配置され、環状に形成されるヨーク、および、
前記ヨーク部の径方向の内側の内周面に、径方向の内側に突出したティース部を有し、
前記ティース部は、径方向の内側の先端の周方向の両側に、周方向にそれぞれ突出して形成されたシュー部を有する鉄心と、
前記鉄心の中心軸に沿った軸方向の両端にそれぞれ設置された絶縁性を有する第一インシュレータ部と、
前記ティース部において、前記ティース部の周方向の両端の側面上、当該側面から延在する前記ヨーク部の内周面上、および各前記シュー部の径方向の外側の側面上に設置されたシート状の絶縁性を有する第二インシュレータ部と、
前記ティース部に前記第一インシュレータ部および前記第二インシュレータ部を介して巻回されたコイル部とを備え、
前記ヨーク部の軸方向の両端には、径方向の外側の外周面に凹部をそれぞれ有し、
前記第二インシュレータ部は、前記鉄心の軸方向の両端に、当該両端から突出して形成された突出部をそれぞれ有し、
前記第一インシュレータ部は、前記第二インシュレータ部の前記突出部と接するとともに、前記鉄心の前記凹部に挿入される第一突起部、および、各前記シュー部の径方向の外側の側面との間において前記第二インシュレータ部を挟む第二突起部とを有する
ので、鉄損の増加を防止でき、性能が向上する固定子を得ることができる。 According to the stator of the rotating electrical machine of the first embodiment configured as described above,
At least one yoke portion is disposed in the circumferential direction, and the yoke is formed in an annular shape; and
On the inner peripheral surface in the radial direction of the yoke portion, there is a teeth portion protruding inward in the radial direction,
The teeth part has an iron core having a shoe part formed to protrude in the circumferential direction on both sides in the circumferential direction of the radially inner tip,
A first insulator portion having insulating properties respectively installed at both axial ends along the central axis of the iron core;
In the teeth portion, seats installed on the side surfaces of both ends of the teeth portion in the circumferential direction, on the inner peripheral surface of the yoke portion extending from the side surfaces, and on the radially outer side surfaces of the shoe portions. A second insulator portion having an insulating shape,
A coil portion wound around the first insulator portion and the second insulator portion on the teeth portion;
At both ends in the axial direction of the yoke portion, there are recesses on the outer peripheral surface on the outer side in the radial direction,
The second insulator part has protrusions formed at both ends in the axial direction of the iron core so as to protrude from both ends,
The first insulator portion is in contact with the protruding portion of the second insulator portion, and between the first protrusion portion inserted into the concave portion of the iron core and the radially outer side surface of each shoe portion. In this case, since the second protrusion portion sandwiches the second insulator portion, an increase in iron loss can be prevented and a stator with improved performance can be obtained.
　このように、鉄心のスロットにおいて、コイル部を収納するためのスペースを減少させる第一インシュレータ部の壁面などの侵入がなく構成できる。よって、鉄心を、軸方向の上側から下側の全てにおいて、同一の大きさにて形成することが可能になる。結果として鉄心の体積低下がなく、鉄損の増加を防止でき、回転電機の性能の向上が図れる。これは、特に、鉄心の軸方向の長さが短い機種に効果的である。また、第一インシュレータ部のスロットに侵入する壁面に使用していた樹脂材料が不要になるので材料費の低減にも効果がある。 Thus, in the slot of the iron core, it is possible to configure without the intrusion of the wall surface of the first insulator part which reduces the space for housing the coil part. Therefore, the iron core can be formed in the same size from the upper side to the lower side in the axial direction. As a result, there is no decrease in the volume of the iron core, an increase in iron loss can be prevented, and the performance of the rotating electrical machine can be improved. This is particularly effective for models in which the axial length of the iron core is short. Moreover, since the resin material used for the wall surface which penetrates into the slot of the 1st insulator part becomes unnecessary, it is effective also in reduction of material cost.
　また、前記第一インシュレータ部の前記第一突起部は、前記第一インシュレータ部側より離れる方向に向かって細くなる第一テーパ部が形成されるので、第一突起部のヨーク部の凹部への挿入性が向上し、位置精度および組立精度に優れ、作業性に優れる固定子を得ることができる。 Further, since the first protrusion of the first insulator portion is formed with a first taper portion that becomes narrower in a direction away from the first insulator portion side, A stator having improved insertability, excellent position accuracy and assembly accuracy, and excellent workability can be obtained.
　また、前記第一インシュレータ部の前記第二突起部は、前記第一インシュレータ部側より離れる方向に向かって細くなる第二テーパ部が形成されるので、第二インシュレータ部と第二突起部との干渉が抑制され、第二インシュレータ部の反り、または、めくれが防止され、挿入性を向上し、作業性に優れる固定子を得ることができる。 Further, since the second protrusion portion of the first insulator portion is formed with a second taper portion that narrows in a direction away from the first insulator portion side, the second insulator portion and the second protrusion portion Interference is suppressed, warping or turning of the second insulator portion is prevented, and a stator that improves insertability and excellent workability can be obtained.
　また、前記第一インシュレータ部は、前記第二インシュレータ部の前記突出部と接する箇所に、前記第二インシュレータ部のシート状の厚さ分の溝部が形成されるので、第二インシュレータ部の軸方向へのずれが防止できる固定子を得ることができる。 In addition, since the first insulator portion is formed with a groove portion having a sheet-like thickness of the second insulator portion at a position in contact with the protruding portion of the second insulator portion, the axial direction of the second insulator portion A stator that can prevent the displacement is obtained.
　また、前記鉄心は、周方向において複数に分割される分割鉄心にて形成され、
各前記分割鉄心には、前記凹部がそれぞれ形成され、
前記第一インシュレータ部には、各前記凹部に挿入される前記第一突起部がそれぞれ形成されるので、分割鉄心毎に第一インシュレータ部を保持できる、固定子を得ることができる。 In addition, the iron core is formed of a split iron core that is divided into a plurality in the circumferential direction,
Each of the divided iron cores is formed with the recess,
Since the first protrusions to be inserted into the recesses are formed in the first insulator portion, a stator that can hold the first insulator portion for each divided iron core can be obtained.
　また、上記に記載の回転電機の固定子と、
前記固定子を径方向の内側に配置したフレームと、
前記固定子の径方向の内側に配置されるとともに、回転可能に前記フレームに支持されたロータとを備えたので、性能に優れた固定子を得ることができ、ひいては性能に優れた回転電機を得ることができる。 Moreover, the stator of the rotating electrical machine described above,
A frame in which the stator is arranged radially inside;
Since the rotor is disposed on the inner side in the radial direction of the stator and is rotatably supported by the frame, a stator with excellent performance can be obtained, and thus a rotating electrical machine with excellent performance can be obtained. Can be obtained.
実施の形態２．
　図１３は、実施の形態２による回転電機１の固定子１００の分割鉄心１１０に第一インシュレータ部１３０および第二インシュレータ部１２０を設置した構成の軸方向Ｙの上側の構成を示す部分拡大斜視図である。図１４は、図１３に示した分割鉄心１１０に設置される第一インシュレータ部１３０の構成を示す平面図である。図において、上記実施の形態１と同様の部分は同一符号を付して説明を省略する。 Embodiment 2. FIG.
FIG. 13 is a partially enlarged perspective view showing a configuration on the upper side in the axial direction Y of the configuration in which the first insulator portion 130 and the second insulator portion 120 are installed in the split core 110 of the stator 100 of the rotating electrical machine 1 according to the second embodiment. It is. FIG. 14 is a plan view showing the configuration of the first insulator portion 130 installed in the split iron core 110 shown in FIG. In the figure, the same parts as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.
　上記実施の形態１では、第二インシュレータ部１２０の突出部１２１を収納する、第一インシュレータ部１３０に溝部１３１を形成する例を示したが、本実施の形態２では、溝部１３１を形成しない例について説明する。第一インシュレータ部１３０のティース部１１２上における周方向Ｚの幅Ｗ３（図１４参照）は、ティース部１１２の周方向Ｚの幅Ｗ２（図３参照）と同一の幅にて形成される。但し、第二突起部１３３の径方向Ｘの内側Ｘ２には、第二インシュレータ部１２０を挟むための溝部１３１が形成されている。 In the first embodiment, an example in which the groove portion 131 is formed in the first insulator portion 130 that accommodates the protruding portion 121 of the second insulator portion 120 has been shown. However, in the second embodiment, an example in which the groove portion 131 is not formed. Will be described. The width W3 (see FIG. 14) in the circumferential direction Z on the tooth portion 112 of the first insulator portion 130 is formed to have the same width as the width W2 (see FIG. 3) in the circumferential direction Z of the tooth portion 112. However, a groove 131 for sandwiching the second insulator 120 is formed on the inner side X2 of the second protrusion 133 in the radial direction X.
　本実施の形態２によれば、第二インシュレータ部１２０と、第一インシュレータ部１３０および分割鉄心１１０とは接着剤、両面テープ等により固定される。他の形状、および製造方法は上記実施の形態１と同様であるため、その説明を省略する。 According to the second embodiment, the second insulator portion 120, the first insulator portion 130, and the split iron core 110 are fixed by an adhesive, a double-sided tape or the like. Since other shapes and manufacturing methods are the same as those of the first embodiment, description thereof is omitted.
　上記のように構成された実施の形態２の回転電機の固定子によれば、上記実施の形態１と同様の効果を奏するのはもちろんのこと、前記第一インシュレータ部は、前記ティース部上における周方向の幅が、前記ティース部の周方向の幅と同一の幅にて形成されるので、第一インシュレータ部に溝部が形成されないため、第一インシュレータ部の形状が簡略化でき、金型コストを低減できる。 According to the stator of the rotating electrical machine of the second embodiment configured as described above, the first insulator portion is on the teeth portion as well as the same effect as the first embodiment. Since the circumferential width is the same as the circumferential width of the teeth portion, no groove is formed in the first insulator portion, so the shape of the first insulator portion can be simplified and the mold cost can be reduced. Can be reduced.
　本開示は、様々な例示的な実施の形態および実施例が記載されているが、１つ、または複数の実施の形態に記載された様々な特徴、態様、および機能は特定の実施の形態の適用に限られるのではなく、単独で、または様々な組み合わせで実施の形態に適用可能である。
従って、例示されていない無数の変形例が、本願明細書に開示される技術の範囲内において想定される。例えば、少なくとも１つの構成要素を変形する場合、追加する場合または省略する場合、さらには、少なくとも１つの構成要素を抽出し、他の実施の形態の構成要素と組み合わせる場合が含まれるものとする。 Although this disclosure describes various exemplary embodiments and examples, various features, aspects, and functions described in one or more embodiments are not limited to a particular embodiment. The present invention is not limited to the application, and can be applied to the embodiments alone or in various combinations.
Accordingly, countless variations that are not illustrated are envisaged within the scope of the technology disclosed herein. For example, the case where at least one component is deformed, the case where the component is added or omitted, the case where the at least one component is extracted and combined with the component of another embodiment are included.
　１　回転電機、２　フレーム、３　回転軸、４　回転子、５　ヨーク、９　コイル部、１０　鉄心、１１　内周面、１２　外周面、２１　側面、４１　側面、１００　固定子、１１０　分割鉄心、１１１　ヨーク部、１１２　ティース部、１１３　スロット、１１４　シュー部、１１７　凹部、１２０　第二インシュレータ部、１２１　突出部、１２５　治具、１２６　切欠部、１３０　第一インシュレータ部、１３１　溝部、１３２　第一突起部、１３３　第二突起部、１３６　第一テーパ部、１３８　第二テーパ部、Ｗ１　幅、Ｗ２　幅、Ｗ３　幅、Ｘ　径方向、Ｘ１　外側、Ｘ２　内側、Ｙ　軸方向、Ｚ　周方向。 1 rotating electric machine, 2 frame, 3 rotating shaft, 4 rotor, 5 yoke, 9 coil part, 10 iron core, 11 inner peripheral surface, 12 outer peripheral surface, 21 side surface, 41 side surface, 100 stator, 110 divided iron core, 111 yoke Part, 112 teeth part, 113 slot, 114 shoe part, 117 recess part, 120 second insulator part, 121 projecting part, 125 jig, 126 notch part, 130 first insulator part, 131 groove part, 132 first projecting part, 133 2nd protrusion part, 136 1st taper part, 138 2nd taper part, W1 width, W2 width, W3 width, X radial direction, X1 outside, X2 inside, Y axis direction, Z circumferential direction.

Claims (6)

  1. 少なくとも１つのヨーク部が周方向に配置され、環状に形成されるヨーク、および、
    前記ヨーク部の径方向の内側の内周面に、径方向の内側に突出したティース部を有し、
    前記ティース部は、径方向の内側の先端の周方向の両側に、周方向にそれぞれ突出して形成されたシュー部を有する鉄心と、
    前記鉄心の中心軸に沿った軸方向の両端にそれぞれ設置された絶縁性を有する第一インシュレータ部と、
    前記ティース部において、前記ティース部の周方向の両端の側面上、当該側面から延在する前記ヨーク部の内周面上、および各前記シュー部の径方向の外側の側面上に設置されたシート状の絶縁性を有する第二インシュレータ部と、
    前記ティース部に前記第一インシュレータ部および前記第二インシュレータ部を介して巻回されたコイル部とを備え、
    前記ヨーク部の軸方向の両端には、径方向の外側の外周面に凹部をそれぞれ有し、
    前記第二インシュレータ部は、前記鉄心の軸方向の両端に、当該両端から突出して形成された突出部をそれぞれ有し、
    前記第一インシュレータ部は、前記第二インシュレータ部の前記突出部と接するとともに、前記鉄心の前記凹部に挿入される第一突起部、および、各前記シュー部の径方向の外側の側面との間において前記第二インシュレータ部を挟む第二突起部とを有する回転電機の固定子。     At least one yoke portion is disposed in the circumferential direction, and the yoke is formed in an annular shape; and
    On the inner peripheral surface in the radial direction of the yoke portion, there is a teeth portion protruding inward in the radial direction,
    The teeth part has an iron core having a shoe part formed to protrude in the circumferential direction on both sides in the circumferential direction of the radially inner tip,
    A first insulator portion having insulating properties respectively installed at both axial ends along the central axis of the iron core;
    In the teeth portion, seats installed on the side surfaces of both ends of the teeth portion in the circumferential direction, on the inner peripheral surface of the yoke portion extending from the side surfaces, and on the radially outer side surfaces of the shoe portions. A second insulator portion having an insulating shape,
    A coil portion wound around the first insulator portion and the second insulator portion on the teeth portion;
    At both ends in the axial direction of the yoke portion, there are recesses on the outer peripheral surface on the outer side in the radial direction,
    The second insulator part has protrusions formed at both ends in the axial direction of the iron core so as to protrude from both ends,
    The first insulator portion is in contact with the protruding portion of the second insulator portion, and between the first protrusion portion inserted into the concave portion of the iron core and the radially outer side surface of each shoe portion. And a second projecting portion sandwiching the second insulator portion.
  2. 前記第一インシュレータ部の前記第一突起部は、前記第一インシュレータ部より離れる方向に向かって細くなる第一テーパ部が形成される請求項１に記載の回転電機の固定子。 2. The stator of a rotating electrical machine according to claim 1, wherein the first projecting portion of the first insulator portion is formed with a first tapered portion that becomes narrower in a direction away from the first insulator portion.
  3. 前記第一インシュレータ部の前記第二突起部は、前記第一インシュレータ部より離れる方向に向かって細くなる第二テーパ部が形成される請求項１または請求項２に記載の回転電機の固定子。 The stator of a rotating electrical machine according to claim 1 or 2, wherein the second projecting portion of the first insulator portion is formed with a second taper portion that becomes narrower in a direction away from the first insulator portion.
  4. 前記第一インシュレータ部は、前記第二インシュレータ部の前記突出部と接する箇所に、前記第二インシュレータ部のシート状の厚さ分の溝部が形成される請求項１から請求項３のいずれか１項に記載の回転電機の固定子。 The said 1st insulator part WHEREIN: The groove part for the sheet-like thickness of a said 2nd insulator part is formed in the location which contact | connects the said protrusion part of a said 2nd insulator part, The any one of Claims 1-3. The stator of the rotating electrical machine according to the item.
  5. 前記第一インシュレータ部は、前記ティース部上における周方向の幅が、前記ティース部の周方向の幅と同一の幅にて形成される請求項１から請求項３のいずれか１項に記載の回転電機の固定子。 The said 1st insulator part is the width | variety of the circumferential direction on the said teeth part, The width | variety of the circumferential direction of the said teeth part is formed in the width | variety same in any one of Claims 1-3. Stator for rotating electric machine.
  6. 請求項１から請求項５のいずれか１項に記載の回転電機の固定子と、
    前記固定子を径方向の内側に配置したフレームと、
    前記固定子の径方向の内側に配置されるとともに、回転可能に前記フレームに支持された回転子とを備えた回転電機。     A stator for a rotating electrical machine according to any one of claims 1 to 5,
    A frame in which the stator is arranged radially inside;
    A rotating electrical machine including a rotor that is disposed inside the stator in the radial direction and is rotatably supported by the frame.
PCT/JP2019/016170 2018-06-04 2019-04-15 Rotating electric machine stator and rotating electric machine WO2019235071A1 (en)

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EP4084302A4 (en) * 2020-03-30 2023-12-27 Daikin Industries, Ltd. Stator and motor comprising said stator

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JPH0274137A (en) * 1988-09-08 1990-03-14 Matsushita Electric Ind Co Ltd Field assembly
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JPH0274137A (en) * 1988-09-08 1990-03-14 Matsushita Electric Ind Co Ltd Field assembly
JP2006180674A (en) * 2004-12-24 2006-07-06 Fujitsu General Ltd Electric motor
JP2013138585A (en) * 2011-12-28 2013-07-11 Fujitsu General Ltd Electric motor
JP2016082839A (en) * 2014-10-22 2016-05-16 株式会社一宮電機 Brushless motor
WO2016208555A1 (en) * 2015-06-25 2016-12-29 三菱電機株式会社 Stator of electric motor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4084302A4 (en) * 2020-03-30 2023-12-27 Daikin Industries, Ltd. Stator and motor comprising said stator

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