WO2021250903A1 - Electric motor, blower device, and method for manufacturing electric motor - Google Patents

Electric motor, blower device, and method for manufacturing electric motor Download PDF

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Publication number
WO2021250903A1
WO2021250903A1 PCT/JP2020/023292 JP2020023292W WO2021250903A1 WO 2021250903 A1 WO2021250903 A1 WO 2021250903A1 JP 2020023292 W JP2020023292 W JP 2020023292W WO 2021250903 A1 WO2021250903 A1 WO 2021250903A1
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WIPO (PCT)
Prior art keywords
stator
core
electric motor
coil
stator core
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PCT/JP2020/023292
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French (fr)
Japanese (ja)
Inventor
渓太 石部
剛史 坪内
正樹 亀山
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三菱電機株式会社
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Priority to PCT/JP2020/023292 priority Critical patent/WO2021250903A1/en
Priority to JP2022529999A priority patent/JPWO2021250903A1/ja
Publication of WO2021250903A1 publication Critical patent/WO2021250903A1/en

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/12—Stationary parts of the magnetic circuit
    • H02K1/18—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures
    • 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

Definitions

  • the present disclosure relates to an electric motor provided with a rotor and a stator, a blower using the electric motor, and a method for manufacturing the electric motor.
  • the coil used for the stator of the motor is wound around the teeth part of the stator core. A part of the coil protrudes from the stator core.
  • the coil end which is the part of the coil protruding from the stator core, does not contribute to the output of the motor. Therefore, if the coil end becomes large, it hinders high efficiency and low cost.
  • the coil is wound around the teeth portion by covering the teeth portion with a coil formed in advance, so that it is necessary to allow a margin in the circumference of the coil, and the coil end becomes large. It ends up.
  • the stator core is divided into a core back portion and a teeth portion forming an outer ring portion.
  • the coil is directly wound around the winding frame in which the insulating resin is assembled to the teeth portion.
  • the electric motor disclosed in Patent Document 1 by arranging the winding frame covering up to the end face of the rotor, the coil to be wound first is directly wound around the winding frame so as to project on the end face of the rotor. Therefore, in the motor disclosed in Patent Document 1, the coil to be wound later can be wound without interfering with the coil wound earlier.
  • the coil end since the coil is wound directly around the winding frame, the coil end can be made smaller and the circumference of the coil can be shortened.
  • stator core is divided into a teeth portion and a core back portion, magnetic resistance is generated at the divided surface, and the efficiency of the motor is reduced.
  • the present disclosure has been made in view of the above, and an object thereof is to obtain an electric motor having a small coil end and high efficiency.
  • the motor according to the present disclosure includes a stator and a rotor.
  • the stator includes a core back portion extending in the circumferential direction of the rotation axis of the rotor and a plurality of teeth portions protruding from the core back portion toward the rotation axis, and the core back portion and the teeth portion are integrated.
  • the core and the coil placed in the slot which is the space between the teeth, and wound around the teeth, are placed adjacent to the stator core in the axial direction of the rotation axis, or in the axial direction. It includes an auxiliary core arranged by dividing the stator core, and an insulating member arranged in the slot to insulate the stator core and the auxiliary core and the coil.
  • the motor according to the present disclosure has the effect of having a small coil end and high efficiency.
  • FIG. 1 An exploded perspective view of the electric motor according to the first embodiment.
  • Side view of the stator of the motor according to the first embodiment The figure which shows the arrangement of the coil of the electric motor which concerns on Embodiment 1.
  • Sectional drawing which shows the film which insulates the stator core of the electric motor which concerns on Embodiment 1 and a coil.
  • FIG. 1 Cross-sectional view of a stator core divided in the axial direction after assembling the coil of the electric motor according to the first embodiment.
  • Side view of the stator of the motor according to the first embodiment Sectional drawing of stator and outer shell of electric motor which concerns on Embodiment 1.
  • FIG. 1 is an exploded perspective view of the electric motor according to the first embodiment.
  • the electric motor 20 is an inner rotor type induction motor.
  • the electric motor 20 includes an annular stator 1, a rotor 2 installed inside the stator 1, a bearing fitted to the shaft of the rotor 2, and a frame 3a and a bracket 3b for supporting the bearing.
  • the stator 1 and the rotor 2 are housed in the outer shell 3 formed by the frame 3a and the bracket 3b.
  • axial direction refers to the axial direction of the rotation axis of the rotor 2.
  • the “circumferential direction” refers to the circumferential direction of the rotation axis of the rotor 2.
  • the "diameter direction” refers to the radial direction of the rotation axis of the rotor 2.
  • FIG. 2 is a perspective view of the stator of the motor according to the first embodiment.
  • FIG. 3 is a perspective view of the stator of the motor according to the first embodiment.
  • FIG. 4 is a side view of the stator of the motor according to the first embodiment.
  • the stator 1 has a stator core 4, a coil 5a and a coil 5b arranged in a slot which is a space between the teeth portions 71 and wound around the teeth portion 71, and a stator core of the coil 5a and the coil 5b. It has a film 6 that insulates from 4.
  • the stator core 4 is composed of a core back portion 72 extending in the circumferential direction of the rotation shaft and a plurality of teeth portions 71 protruding from the core back portion 72 toward the rotation axis of the rotor 2.
  • the core back portion 72 and the teeth portion 71 are integrated.
  • the stator core 4 is configured by vertically arranging a first stator core 41 and a second stator core 42, each of which is formed by laminating a plurality of electromagnetic steel sheets in the axial direction.
  • the teeth portion 71 protrudes from the core back portion 72 toward the inner peripheral side.
  • a tip portion 73 extending in the circumferential direction is formed at the tip portion of the teeth portion 71, and the tip portion of the teeth portion 71 is wide.
  • the slot has a dovetail shape with a narrow slot opening.
  • FIG. 5 is a diagram showing the arrangement of the coils of the electric motor according to the first embodiment. As shown in FIG. 5, the coils 5a are arranged at a pitch of 6 slots, and the coils 5b are arranged at a pitch of 4 slots. Two coils 5b are contained in one slot. Further, the number of turns of the coil 5b is half the number of turns of the coil 5a.
  • a coil 5a straddling the slots # 4 to # 7 is arranged in the slots # 6 and # 11.
  • a coil 5a straddling the slots # 7 to # 10 is arranged in the slots # 9 and # 14 .
  • a coil 5a straddling the slots # 10 to # 13 is arranged in the slots # 9 and # 14 .
  • a coil 5a straddling the slots # 10 to # 13 is arranged in the slots # 12 and # 17, a coil 5a straddling the slots # 13 to # 16 is arranged in the slots # 15 and # 20, a coil 5a straddling the slots # 16 to # 19 is arranged in the slots # 18 and # 23, a coil 5a straddling the slots # 19 to # 22 is arranged in the slots # 21 and 2 #.
  • a coil 5a straddling the slots # 22 to 24 # and # 1 is arranged in the slots # 21 and 2 #.
  • the number of coils per phase is four for the coil 5a and four for the coil 5b, for a total of eight.
  • the coils 5a and 5b which are previously wound around the winding frame, are assembled to the stator core 4 by an inserter or manually.
  • the coils 5a and 5b are made larger than the slot pitch between the slots to be arranged in order to enable assembly to the stator core 4.
  • the surplus portion 8a of the coils 5a and 5b increases the coil end 8.
  • the surplus portion 8a is a portion of the coil end 8 extending in the axial direction of the rotor 2, and corresponds to a portion sandwiched by the broken line in FIG.
  • a surplus portion 8a exists on one end side and the other end side of the stator core 4 in the axial direction, respectively.
  • FIG. 6 is a cross-sectional view showing a film that insulates the stator core and the coil of the motor according to the first embodiment.
  • the stator core 4 and the coils 5a and 5b are insulated by a film 6.
  • the film 6 protrudes from the stator core 4, and the coils 5a and 5b pass over the film 6, whereby the end face of the stator core 4 and the coil. Insulation from 5a and 5b is ensured.
  • the film 6 is divided into two sheets, arranged in the axial direction, and partially overlapped in the slot to form an overlapping portion 6a.
  • FIG. 7 is a perspective view of a stator core divided in the axial direction after assembling the coil of the motor according to the first embodiment.
  • FIG. 8 is a side view of the stator core divided in the axial direction after assembling the coil of the motor according to the first embodiment.
  • FIG. 9 is a cross-sectional view of a stator core divided in the axial direction after assembling the coil of the electric motor according to the first embodiment.
  • the overlapping portion 6a where the films 6 overlap each other in the slot is reduced by the amount of the gap 9, but remains without disappearing. Therefore, the coils 5a and 5b are not exposed between the two films 6 in the gap 9, and the insulating property is ensured.
  • stator core 4 can be easily divided by not providing a portion where caulking is performed at the interface between the first stator core 41 and the second stator core 42.
  • FIG. 10 is a diagram showing a process of dividing the stator core of the motor according to the first embodiment. As shown in FIGS. 7 and 8, by providing a step 10 on the outer peripheral surface of the stator core 4, the jig 30 is hooked on the step 10 to hook the jig 30 to the first stator core 41 and the second stator. It can be separated from the iron core 42.
  • FIG. 11 is a perspective view of the auxiliary iron core of the electric motor according to the first embodiment.
  • FIG. 12 is an exploded perspective view of the stator of the motor according to the first embodiment.
  • FIG. 13 is a perspective view of the stator of the motor according to the first embodiment.
  • FIG. 14 is a side view of the stator of the motor according to the first embodiment.
  • the auxiliary core 11 is inserted into the gap 9 formed between the first stator core 41 and the second stator core 42 by dividing the stator core 4 in the axial direction.
  • the auxiliary iron core 11 includes a straight-shaped auxiliary tooth portion 12 having no tip portion. Since the auxiliary tooth portion 12 has a straight shape, the auxiliary iron core 11 can be inserted into the gap 9 without interfering with the coils 5a and 5b.
  • the auxiliary core 11 has a shape in which the stator core 4 is divided for each tooth portion 71 on a plane passing through the center of the stator core 4 and parallel to the axial direction, and the tip portion 73 is removed from the teeth portion 71. Therefore, the shape in which a plurality of auxiliary cores 11 arranged on the circumference so as to connect the core back portions 15 are projected onto a plane perpendicular to the axial direction is such that the stator core 4 is axially oriented except for the presence or absence of the tip portion 73. The shape is the same as the shape projected onto a vertical surface.
  • the slot open 13 of the stator 1 is large at the portion where the auxiliary core 11 is inserted.
  • FIG. 15 is a cross-sectional view of the stator and outer shell of the motor according to the first embodiment.
  • the outer shell 3 is arranged on the outer diameter side of the stator 1. By arranging the auxiliary core 11 at the portion where the outer shell 3 is in contact with the stator 1, the auxiliary core 11 can be pressed and fixed by the outer shell 3.
  • the stator core 4 After assembling the coils 5a and 5b, the stator core 4 is divided in the axial direction to form a gap 9, so that the surplus portion 8a of the coil end 8 is eliminated. Further, the auxiliary core 11 is inserted into the gap 9 created by dividing the stator core 4. Therefore, the portion of the coils 5a and 5b that contributes to the generation of the magnetic field is increased as compared with that before the stator core 4 is divided. Therefore, the electric motor 20 according to the first embodiment can increase the output without increasing the amount of copper in the coils 5a and 5b. Since the peripheral lengths of the coils 5a and 5b are the same before and after the stator core 4 is divided, the motor 20 according to the first embodiment increases the output without increasing the electric resistance of the coils 5a and 5b. Can be done.
  • FIG. 16 is a perspective view of the stator of the motor according to the first modification of the first embodiment.
  • FIG. 17 is a side view of the stator of the motor according to the first modification of the first embodiment.
  • the end face of the stator core 4 and the coils 5a and 5b are insulated by a plastic molded product 14 called an insulator.
  • the coil end 8 can be made smaller than when the film 6 is used.
  • FIG. 18 is a perspective view of the stator of the motor according to the second modification of the first embodiment.
  • FIG. 19 is a side view of the stator of the motor according to the second modification of the first embodiment.
  • the stator core 4 is not divided after the coils 5a and 5b are assembled, and the auxiliary core 11 is arranged adjacent to the end surface of the stator core 4 on one end side in the axial direction.
  • the auxiliary core 11 is arranged adjacent to the end surface on one end side of the stator core 4 in the axial direction, the stator core 4 is displaced axially with respect to the coils 5a and 5b, and the stator core 4 is displaced on one end side and the stator core 4.
  • the surplus portion 8a is eliminated on both sides of the other end. Since the stator 1 of the motor 20 according to the second modification of the first embodiment does not require the work of dividing the stator core 4 after assembling the coils 5a and 5b, the manufacturing process of the stator 1 is simplified. Can be changed.
  • the coil end 8 has no surplus portion 8a, and the length of the core of the stator 1 is increased by the dimension of the auxiliary core 11, so that the magnetic resistance of the coils 5a and 5b is increased.
  • the magnetic flux can be increased without causing it.
  • the core back portion 72 and the teeth portion 71 are integrated, and no magnetic resistance is generated at the boundary portion between the core back portion 72 and the teeth portion 71. Therefore, the electric motor 20 according to the first embodiment can realize high output and high efficiency.
  • the stator core 4 since the core back portion 72 and the teeth portion 71 are integrated, the work of assembling the core back portion 72 and the teeth portion 71 is unnecessary, and an assembly error does not occur. Therefore, the stator core 4 does not cause an assembly error.
  • the dimensional accuracy of 4 can be improved.
  • FIG. 20 is a rear view of a ventilation fan equipped with a motor according to the first embodiment.
  • the electric motor 20 according to the first embodiment is used as a power source for rotating the fan 101 of the ventilation fan 100.
  • the electric motor 20 By using the electric motor 20 as the power source for rotating the fan 101 of the ventilation fan 100, it is possible to increase the air volume and the wind pressure and reduce the noise.
  • the ventilation fan 100 provided with the electric motor 20 has been described here, the electric motor 20 is not limited to the ventilation fan 100 and can be used for all blower devices such as a blower and a circulator.
  • the configuration shown in the above embodiment is an example of the content, can be combined with another known technique, and a part of the configuration is omitted or changed without departing from the gist. It is also possible.
  • stator 1 stator, 2 rotor, 3 outer shell, 3a frame, 3b bracket, 4 stator core, 5a, 5b coil, 6 film, 6a overlapping part, 8 coil end, 8a surplus part, 9 gap, 10 step, 11 auxiliary Iron core, 12 auxiliary teeth part, 13 slot open, 14 plastic molded product, 15,72 core back part, 20 electric motor, 30 jigs, 41 first stator core, 42 second stator core, 71 teeth part, 73 tip part, 100 ventilation fan, 101 fan.

Abstract

An electric motor comprises a stator (1) and a rotor, the stator (1) being provided with: a stator core (4) provided with a core back part that extends in the circumferential direction of the rotation axis of the rotor, and a plurality of teeth parts that project from the core back part toward the rotation axis, the core back part and the teeth parts being integrated; coils (5a, 5b) positioned in slots, which are gaps between the teeth parts, the coils being wound on the teeth parts; an auxiliary core (11) that is positioned adjacent to the stator core (4) in the axial direction of the rotation axis, or is positioned dividing the stator core (4) in the axial direction; and a film (6) positioned in the slots and insulating between the stator core (4) and auxiliary core (11), and the coils (5a, 5b).

Description

電動機、送風装置及び電動機の製造方法How to manufacture motors, blowers and motors
　本開示は、回転子と固定子とを備えた電動機、電動機を用いた送風装置及び電動機の製造方法に関する。 The present disclosure relates to an electric motor provided with a rotor and a stator, a blower using the electric motor, and a method for manufacturing the electric motor.
　電動機の固定子に用いられるコイルは、固定子鉄心のティース部に巻き付けられる。コイルの一部は固定子鉄心からはみ出す。コイルのうち固定子鉄心からはみだした部分であるコイルエンドは、電動機の出力に寄与しない。したがって、コイルエンドが大きくなると、高効率化及び低コスト化の妨げとなる。 The coil used for the stator of the motor is wound around the teeth part of the stator core. A part of the coil protrudes from the stator core. The coil end, which is the part of the coil protruding from the stator core, does not contribute to the output of the motor. Therefore, if the coil end becomes large, it hinders high efficiency and low cost.
　一般的な単相誘導電動機では、予め形成しておいたコイルをティース部に被せることによってティース部にコイルを巻き付けるため、コイルの周長に余裕を持たせる必要があり、コイルエンドが大きくなってしまう。 In a general single-phase induction motor, the coil is wound around the teeth portion by covering the teeth portion with a coil formed in advance, so that it is necessary to allow a margin in the circumference of the coil, and the coil end becomes large. It ends up.
　特許文献１に開示される電動機は、固定子鉄心が、外輪部を形成するコアバック部とティース部とに分割されている。特許文献１に開示される電動機では、ティース部に絶縁樹脂を組み付けた巻枠に、コイルが直接巻き付けられる。特許文献１に開示される電動機においては、回転子の端面まで覆う巻枠を配置することで、最初に巻くコイルは回転子の端面上に張り出すように巻枠に直接巻き付けられる。したがって、特許文献１に開示される電動機では、後から巻くコイルを、先に巻かれたコイルと干渉することなく、巻き付けることができる。特許文献１に開示される電動機は、巻枠に直接コイルを巻き付けるため、コイルエンドを小さくし、コイルの周長を短くできる。 In the motor disclosed in Patent Document 1, the stator core is divided into a core back portion and a teeth portion forming an outer ring portion. In the motor disclosed in Patent Document 1, the coil is directly wound around the winding frame in which the insulating resin is assembled to the teeth portion. In the electric motor disclosed in Patent Document 1, by arranging the winding frame covering up to the end face of the rotor, the coil to be wound first is directly wound around the winding frame so as to project on the end face of the rotor. Therefore, in the motor disclosed in Patent Document 1, the coil to be wound later can be wound without interfering with the coil wound earlier. In the motor disclosed in Patent Document 1, since the coil is wound directly around the winding frame, the coil end can be made smaller and the circumference of the coil can be shortened.
特許第３１０２６６５号公報Japanese Patent No. 3102665
　しかしながら、固定子鉄心をティース部とコアバック部とに分割すると、分割面にて磁気抵抗が発生し、電動機の効率が低下してしまう。 However, if the stator core is divided into a teeth portion and a core back portion, magnetic resistance is generated at the divided surface, and the efficiency of the motor is reduced.
　本開示は、上記に鑑みてなされたものであって、コイルエンドが小さく、効率が高い電動機を得ることを目的とする。 The present disclosure has been made in view of the above, and an object thereof is to obtain an electric motor having a small coil end and high efficiency.
　上述した課題を解決し、目的を達成するために、本開示に係る電動機は、固定子及び回転子を備える。固定子は、回転子の回転軸の周方向に延びるコアバック部と、コアバック部から回転軸に向かって突出する複数のティース部とを備え、コアバック部とティース部とは一体である固定子鉄心と、ティース部同士の間の空間であるスロットに配置されてティース部に巻回されるコイルと、回転軸の軸方向において固定子鉄心に隣接して配置されるか、又は軸方向において固定子鉄心を分断して配置される補助鉄心と、スロットに配置されて、固定子鉄心及び補助鉄心と、コイルとを絶縁する絶縁部材とを備える。 In order to solve the above-mentioned problems and achieve the object, the motor according to the present disclosure includes a stator and a rotor. The stator includes a core back portion extending in the circumferential direction of the rotation axis of the rotor and a plurality of teeth portions protruding from the core back portion toward the rotation axis, and the core back portion and the teeth portion are integrated. The core and the coil placed in the slot, which is the space between the teeth, and wound around the teeth, are placed adjacent to the stator core in the axial direction of the rotation axis, or in the axial direction. It includes an auxiliary core arranged by dividing the stator core, and an insulating member arranged in the slot to insulate the stator core and the auxiliary core and the coil.
　本開示に係る電動機は、コイルエンドが小さく、効率が高いという効果を奏する。 The motor according to the present disclosure has the effect of having a small coil end and high efficiency.
実施の形態１に係る電動機の分解斜視図An exploded perspective view of the electric motor according to the first embodiment. 実施の形態１に係る電動機の固定子の斜視図Perspective view of the stator of the motor according to the first embodiment. 実施の形態１に係る電動機の固定子の斜視図Perspective view of the stator of the motor according to the first embodiment. 実施の形態１に係る電動機の固定子の側面図Side view of the stator of the motor according to the first embodiment 実施の形態１に係る電動機のコイルの配置を示す図The figure which shows the arrangement of the coil of the electric motor which concerns on Embodiment 1. 実施の形態１に係る電動機の固定子鉄心とコイルとを絶縁するフィルムを示す断面図Sectional drawing which shows the film which insulates the stator core of the electric motor which concerns on Embodiment 1 and a coil. 実施の形態１に係る電動機のコイルを組み付けた後に軸方向に分割した固定子鉄心の斜視図Perspective view of a stator core divided in the axial direction after assembling the coil of the motor according to the first embodiment. 実施の形態１に係る電動機のコイルを組み付けた後に軸方向に分割した固定子鉄心の側面図Side view of the stator core divided in the axial direction after assembling the coil of the electric motor according to the first embodiment. 実施の形態１に係る電動機のコイルを組み付けた後に軸方向に分割した固定子鉄心の断面図Cross-sectional view of a stator core divided in the axial direction after assembling the coil of the electric motor according to the first embodiment. 実施の形態１に係る電動機の固定子鉄心を分割する処理を示す図The figure which shows the process which divides the stator core of the electric motor which concerns on Embodiment 1. 実施の形態１に係る電動機の補助鉄心の斜視図Perspective view of the auxiliary iron core of the electric motor according to the first embodiment. 実施の形態１に係る電動機の固定子の分解斜視図An exploded perspective view of the stator of the motor according to the first embodiment. 実施の形態１に係る電動機の固定子の斜視図Perspective view of the stator of the motor according to the first embodiment. 実施の形態１に係る電動機の固定子の側面図Side view of the stator of the motor according to the first embodiment 実施の形態１に係る電動機の固定子及び外郭の断面図Sectional drawing of stator and outer shell of electric motor which concerns on Embodiment 1. 実施の形態１の第１の変形例に係る電動機の固定子の斜視図Perspective view of the stator of the electric motor according to the first modification of the first embodiment. 実施の形態１の第１の変形例に係る電動機の固定子の側面図Side view of the stator of the electric motor according to the first modification of the first embodiment. 実施の形態１の第２の変形例に係る電動機の固定子の斜視図Perspective view of the stator of the electric motor according to the second modification of the first embodiment. 実施の形態１の第２の変形例に係る電動機の固定子の側面図Side view of the stator of the electric motor according to the second modification of the first embodiment. 実施の形態１に係る電動機を搭載した換気扇の背面図Rear view of a ventilation fan equipped with an electric motor according to the first embodiment.
　以下に、実施の形態に係る電動機、送風装置及び電動機の製造方法を図面に基づいて詳細に説明する。 The manufacturing method of the motor, the blower, and the motor according to the embodiment will be described in detail below based on the drawings.
実施の形態１．
　図１は、実施の形態１に係る電動機の分解斜視図である。電動機２０は、インナーロータ型の誘導電動機である。電動機２０は、環状の固定子１と、固定子１の内側に設置される回転子２と、回転子２のシャフトに嵌め込まれた軸受と、軸受を支持するフレーム３ａ及びブラケット３ｂとを備える。固定子１及び回転子２は、フレーム３ａ及びブラケット３ｂがなす外郭３の中に収容される。以下の説明において、「軸方向」は、回転子２の回転軸の軸方向を指す。また、以下の説明において、「周方向」は、回転子２の回転軸の周方向を指す。また、以下の説明において、「径方向」は、回転子２の回転軸の径方向を指す。 Embodiment 1.
FIG. 1 is an exploded perspective view of the electric motor according to the first embodiment. The electric motor 20 is an inner rotor type induction motor. The electric motor 20 includes an annular stator 1, a rotor 2 installed inside the stator 1, a bearing fitted to the shaft of the rotor 2, and a frame 3a and a bracket 3b for supporting the bearing. The stator 1 and the rotor 2 are housed in the outer shell 3 formed by the frame 3a and the bracket 3b. In the following description, "axial direction" refers to the axial direction of the rotation axis of the rotor 2. Further, in the following description, the "circumferential direction" refers to the circumferential direction of the rotation axis of the rotor 2. Further, in the following description, the "diameter direction" refers to the radial direction of the rotation axis of the rotor 2.
　図２は、実施の形態１に係る電動機の固定子の斜視図である。図３は、実施の形態１に係る電動機の固定子の斜視図である。図４は、実施の形態１に係る電動機の固定子の側面図である。固定子１は、固定子鉄心４と、ティース部７１同士の間の空間であるスロットに配置されてティース部７１に巻回されるコイル５ａ及びコイル５ｂと、コイル５ａ及びコイル５ｂを固定子鉄心４と絶縁するフィルム６とを有する。固定子鉄心４は、回転軸の周方向に延びるコアバック部７２と、コアバック部７２から回転子２の回転軸に向かって突出する複数のティース部７１とで構成されている。コアバック部７２とティース部７１は一体化されている。固定子鉄心４は、各々が複数枚の電磁鋼板を軸方向に積層して形成された第１の固定子鉄心４１及び第２の固定子鉄心４２を軸方向に並べて構成されている。ティース部７１は、コアバック部７２から内周側に突出している。ティース部７１の先端部には、周方向に広がるチップ部７３が形成されており、ティース部７１は先端部が幅広になっている。一方、スロットは、スロットオープンが狭いダブテイル形状になっている。 FIG. 2 is a perspective view of the stator of the motor according to the first embodiment. FIG. 3 is a perspective view of the stator of the motor according to the first embodiment. FIG. 4 is a side view of the stator of the motor according to the first embodiment. The stator 1 has a stator core 4, a coil 5a and a coil 5b arranged in a slot which is a space between the teeth portions 71 and wound around the teeth portion 71, and a stator core of the coil 5a and the coil 5b. It has a film 6 that insulates from 4. The stator core 4 is composed of a core back portion 72 extending in the circumferential direction of the rotation shaft and a plurality of teeth portions 71 protruding from the core back portion 72 toward the rotation axis of the rotor 2. The core back portion 72 and the teeth portion 71 are integrated. The stator core 4 is configured by vertically arranging a first stator core 41 and a second stator core 42, each of which is formed by laminating a plurality of electromagnetic steel sheets in the axial direction. The teeth portion 71 protrudes from the core back portion 72 toward the inner peripheral side. A tip portion 73 extending in the circumferential direction is formed at the tip portion of the teeth portion 71, and the tip portion of the teeth portion 71 is wide. On the other hand, the slot has a dovetail shape with a narrow slot opening.
　図５は、実施の形態１に係る電動機のコイルの配置を示す図である。図５に示すように、コイル５ａは、６スロットピッチで配置されており、コイル５ｂは、４スロットピッチで配置されている。コイル５ｂは、一つのスロットに二つ入っている。また、コイル５ｂの巻数は、コイル５ａの巻数の半分である。 FIG. 5 is a diagram showing the arrangement of the coils of the electric motor according to the first embodiment. As shown in FIG. 5, the coils 5a are arranged at a pitch of 6 slots, and the coils 5b are arranged at a pitch of 4 slots. Two coils 5b are contained in one slot. Further, the number of turns of the coil 5b is half the number of turns of the coil 5a.
　図５中の「＃１」から「＃２４」は、スロットの番号を表している。＃１及び＃４のスロットには、＃２及び＃３のスロットを跨ぐコイル５ｂが配置されている。＃４及び＃７のスロットには、＃５及び＃６のスロットを跨ぐコイル５ｂが配置されている。＃７及び＃１０のスロットには、＃８及び＃９のスロットを跨ぐコイル５ｂが配置されている。＃１０及び＃１３のスロットには、＃１１及び＃１２のスロットを跨ぐコイル５ｂが配置されている。＃１３及び＃１６のスロットには、＃１４及び＃１５のスロットを跨ぐコイル５ｂが配置されている。＃１６及び＃１９のスロットには、＃１７及び＃１８のスロットを跨ぐコイル５ｂが配置されている。＃１９及び＃２２のスロットには、＃２０及び＃２１のスロットを跨ぐコイル５ｂが配置されている。＃２２及び＃１のスロットには、＃２３及び＃２４のスロットを跨ぐコイル５ｂが配置されている。 "# 1" to "# 24" in FIG. 5 represent slot numbers. In the slots # 1 and # 4, a coil 5b straddling the slots # 2 and # 3 is arranged. In the slots # 4 and # 7, a coil 5b straddling the slots # 5 and # 6 is arranged. In the slots # 7 and # 10, a coil 5b straddling the slots # 8 and # 9 is arranged. In the slots # 10 and # 13, a coil 5b straddling the slots # 11 and # 12 is arranged. In the slots # 13 and # 16, a coil 5b straddling the slots # 14 and # 15 is arranged. In the slots # 16 and # 19, a coil 5b straddling the slots # 17 and # 18 is arranged. In the slots # 19 and # 22, a coil 5b straddling the slots # 20 and # 21 is arranged. In the slots # 22 and # 1, a coil 5b straddling the slots # 23 and # 24 is arranged.
　また、＃３及び＃８のスロットには、＃４から＃７のスロットを跨ぐコイル５ａが配置されている。＃６及び＃１１のスロットには、＃７から＃１０のスロットを跨ぐコイル５ａが配置されている。＃９及び＃１４のスロットには、＃１０から＃１３のスロットを跨ぐコイル５ａが配置されている。＃１２及び＃１７のスロットには、＃１３から＃１６のスロットを跨ぐコイル５ａが配置されている。＃１５及び＃２０のスロットには、＃１６から＃１９のスロットを跨ぐコイル５ａが配置されている。＃１８及び＃２３のスロットには、＃１９から＃２２のスロットを跨ぐコイル５ａが配置されている。＃２１及び２＃のスロットには、＃２２から２４＃及び＃１のスロットを跨ぐコイル５ａが配置されている。 Further, in the slots # 3 and # 8, a coil 5a straddling the slots # 4 to # 7 is arranged. In the slots # 6 and # 11, a coil 5a straddling the slots # 7 to # 10 is arranged. In the slots # 9 and # 14, a coil 5a straddling the slots # 10 to # 13 is arranged. In the slots # 12 and # 17, a coil 5a straddling the slots # 13 to # 16 is arranged. In the slots # 15 and # 20, a coil 5a straddling the slots # 16 to # 19 is arranged. In the slots # 18 and # 23, a coil 5a straddling the slots # 19 to # 22 is arranged. In the slots # 21 and 2 #, a coil 5a straddling the slots # 22 to 24 # and # 1 is arranged.
　１相当たりのコイル数は、コイル５ａが四つ、コイル５ｂが四つで合計八つである。 The number of coils per phase is four for the coil 5a and four for the coil 5b, for a total of eight.
　コイル５ａ，５ｂは、予め巻枠に巻いたものが、インサータ又は手作業で固定子鉄心４に組み付けられる。コイル５ａ，５ｂは、固定子鉄心４への組付を可能とするために、配置するスロット同士のスロットピッチよりも大きく作られている。コイル５ａ，５ｂの余剰部８ａは、コイルエンド８を増加させる。なお、余剰部８ａは、コイルエンド８のうち、回転子２の軸方向に延びている部分であり、図４中の破線で挟まれた部分が相当する。固定子鉄心４の軸方向の一端側と他端側とにそれぞれ余剰部８ａが存在している。 The coils 5a and 5b, which are previously wound around the winding frame, are assembled to the stator core 4 by an inserter or manually. The coils 5a and 5b are made larger than the slot pitch between the slots to be arranged in order to enable assembly to the stator core 4. The surplus portion 8a of the coils 5a and 5b increases the coil end 8. The surplus portion 8a is a portion of the coil end 8 extending in the axial direction of the rotor 2, and corresponds to a portion sandwiched by the broken line in FIG. A surplus portion 8a exists on one end side and the other end side of the stator core 4 in the axial direction, respectively.
　図６は、実施の形態１に係る電動機の固定子鉄心とコイルとを絶縁するフィルムを示す断面図である。固定子鉄心４とコイル５ａ，５ｂとは、フィルム６で絶縁されている。図６に示したように、固定子鉄心４の端面では、フィルム６が固定子鉄心４からはみ出しており、フィルム６の上をコイル５ａ，５ｂが通ることにより、固定子鉄心４の端面とコイル５ａ，５ｂとの絶縁が確保される。 FIG. 6 is a cross-sectional view showing a film that insulates the stator core and the coil of the motor according to the first embodiment. The stator core 4 and the coils 5a and 5b are insulated by a film 6. As shown in FIG. 6, at the end face of the stator core 4, the film 6 protrudes from the stator core 4, and the coils 5a and 5b pass over the film 6, whereby the end face of the stator core 4 and the coil. Insulation from 5a and 5b is ensured.
　フィルム６は、二枚に分かれており、軸方向に並べられて、スロット内で一部が重なり合って重複部６ａが形成されている。 The film 6 is divided into two sheets, arranged in the axial direction, and partially overlapped in the slot to form an overlapping portion 6a.
　図７は、実施の形態１に係る電動機のコイルを組み付けた後に軸方向に分割した固定子鉄心の斜視図である。図８は、実施の形態１に係る電動機のコイルを組み付けた後に軸方向に分割した固定子鉄心の側面図である。図９は、実施の形態１に係る電動機のコイルを組み付けた後に軸方向に分割した固定子鉄心の断面図である。固定子鉄心４は、コイル５ａ，５ｂの組付後に、第１の固定子鉄心４１と第２の固定子鉄心４２とを分離することによって軸方向に分割され、コイルエンド８に押し付けられている。したがって、コイルエンド８から余剰部８ａがなくなり、第１の固定子鉄心４１と第２の固定子鉄心４２との間には、隙間９が形成される。 FIG. 7 is a perspective view of a stator core divided in the axial direction after assembling the coil of the motor according to the first embodiment. FIG. 8 is a side view of the stator core divided in the axial direction after assembling the coil of the motor according to the first embodiment. FIG. 9 is a cross-sectional view of a stator core divided in the axial direction after assembling the coil of the electric motor according to the first embodiment. After assembling the coils 5a and 5b, the stator core 4 is axially divided by separating the first stator core 41 and the second stator core 42, and is pressed against the coil end 8. .. Therefore, the surplus portion 8a disappears from the coil end 8, and a gap 9 is formed between the first stator core 41 and the second stator core 42.
　固定子鉄心４を分割することにより、スロット内でフィルム６同士が重なりあう重複部６ａは、隙間９の分だけ減少するが、消失はせずに残っている。したがって、隙間９において二枚のフィルム６同士の間でコイル５ａ，５ｂが露出することはなく、絶縁性は確保されている。 By dividing the stator core 4, the overlapping portion 6a where the films 6 overlap each other in the slot is reduced by the amount of the gap 9, but remains without disappearing. Therefore, the coils 5a and 5b are not exposed between the two films 6 in the gap 9, and the insulating property is ensured.
　第１の固定子鉄心４１と第２の固定子鉄心４２との界面を、フィルム６の端部が配置された部分とは異なる位置にすることにより、隙間９にフィルム６が入り込むことを防止できる。 By setting the interface between the first stator core 41 and the second stator core 42 at a position different from the portion where the end portion of the film 6 is arranged, it is possible to prevent the film 6 from entering the gap 9. ..
　固定子鉄心４の製造時に、第１の固定子鉄心４１と第２の固定子鉄心４２との界面ではかしめが行われる部位を設けないことで、固定子鉄心４を容易に分割できる。 At the time of manufacturing the stator core 4, the stator core 4 can be easily divided by not providing a portion where caulking is performed at the interface between the first stator core 41 and the second stator core 42.
　図１０は、実施の形態１に係る電動機の固定子鉄心を分割する処理を示す図である。図７及び図８に示したように、固定子鉄心４の外周面に段差１０を設けておくことにより、段差１０に治具３０を引っ掛けて第１の固定子鉄心４１と第２の固定子鉄心４２とを分離できる。 FIG. 10 is a diagram showing a process of dividing the stator core of the motor according to the first embodiment. As shown in FIGS. 7 and 8, by providing a step 10 on the outer peripheral surface of the stator core 4, the jig 30 is hooked on the step 10 to hook the jig 30 to the first stator core 41 and the second stator. It can be separated from the iron core 42.
　図１１は、実施の形態１に係る電動機の補助鉄心の斜視図である。図１２は、実施の形態１に係る電動機の固定子の分解斜視図である。図１３は、実施の形態１に係る電動機の固定子の斜視図である。図１４は、実施の形態１に係る電動機の固定子の側面図である。固定子鉄心４を軸方向に分割することによって第１の固定子鉄心４１と第２の固定子鉄心４２との間に形成された隙間９には、補助鉄心１１が挿入される。補助鉄心１１は、チップ部の無いストレート形状の補助ティース部１２を備える。補助鉄心１１は、補助ティース部１２がストレート形状であるため、コイル５ａ，５ｂに干渉することなく隙間９に挿入できる。 FIG. 11 is a perspective view of the auxiliary iron core of the electric motor according to the first embodiment. FIG. 12 is an exploded perspective view of the stator of the motor according to the first embodiment. FIG. 13 is a perspective view of the stator of the motor according to the first embodiment. FIG. 14 is a side view of the stator of the motor according to the first embodiment. The auxiliary core 11 is inserted into the gap 9 formed between the first stator core 41 and the second stator core 42 by dividing the stator core 4 in the axial direction. The auxiliary iron core 11 includes a straight-shaped auxiliary tooth portion 12 having no tip portion. Since the auxiliary tooth portion 12 has a straight shape, the auxiliary iron core 11 can be inserted into the gap 9 without interfering with the coils 5a and 5b.
　補助鉄心１１は、固定子鉄心４の中心を通り軸方向に平行な平面でティース部７１ごとに固定子鉄心４を分割し、ティース部７１からチップ部７３を除去した形状である。したがって、コアバック部１５が繋がるように円周上に配置した複数の補助鉄心１１を軸方向に垂直な面へ投影した形状は、チップ部７３の有無を除き、固定子鉄心４を軸方向に垂直な面へ投影した形状と同じ形状となる。 The auxiliary core 11 has a shape in which the stator core 4 is divided for each tooth portion 71 on a plane passing through the center of the stator core 4 and parallel to the axial direction, and the tip portion 73 is removed from the teeth portion 71. Therefore, the shape in which a plurality of auxiliary cores 11 arranged on the circumference so as to connect the core back portions 15 are projected onto a plane perpendicular to the axial direction is such that the stator core 4 is axially oriented except for the presence or absence of the tip portion 73. The shape is the same as the shape projected onto a vertical surface.
　補助鉄心１１の補助ティース部１２はストレート形状であるため、固定子１は、補助鉄心１１が挿入された部分では、スロットオープン１３が大きくなっている。 Since the auxiliary tooth portion 12 of the auxiliary core 11 has a straight shape, the slot open 13 of the stator 1 is large at the portion where the auxiliary core 11 is inserted.
　図１５は、実施の形態１に係る電動機の固定子及び外郭の断面図である。固定子１の外径側には、外郭３が配置される。外郭３が固定子１と接する部分に補助鉄心１１を配置することで、補助鉄心１１を外郭３で押さえて固定することできる。 FIG. 15 is a cross-sectional view of the stator and outer shell of the motor according to the first embodiment. The outer shell 3 is arranged on the outer diameter side of the stator 1. By arranging the auxiliary core 11 at the portion where the outer shell 3 is in contact with the stator 1, the auxiliary core 11 can be pressed and fixed by the outer shell 3.
　コイル５ａ，５ｂの組付後に固定子鉄心４を軸方向に分割して隙間９を形成することにより、コイルエンド８の余剰部８ａは無くなる。さらに、固定子鉄心４を分割することによって生じた隙間９には、補助鉄心１１が挿入される。このため、コイル５ａ，５ｂのうち磁界の発生に寄与する部分は、固定子鉄心４を分割する前よりも増加する。したがって、実施の形態１に係る電動機２０は、コイル５ａ，５ｂの銅量を増やすことなく、出力を高めることができる。コイル５ａ，５ｂの周長は、固定子鉄心４を分割する前後で同じであるため、実施の形態１に係る電動機２０は、コイル５ａ，５ｂの電気抵抗を増加させることなく、出力を高めることができる。 After assembling the coils 5a and 5b, the stator core 4 is divided in the axial direction to form a gap 9, so that the surplus portion 8a of the coil end 8 is eliminated. Further, the auxiliary core 11 is inserted into the gap 9 created by dividing the stator core 4. Therefore, the portion of the coils 5a and 5b that contributes to the generation of the magnetic field is increased as compared with that before the stator core 4 is divided. Therefore, the electric motor 20 according to the first embodiment can increase the output without increasing the amount of copper in the coils 5a and 5b. Since the peripheral lengths of the coils 5a and 5b are the same before and after the stator core 4 is divided, the motor 20 according to the first embodiment increases the output without increasing the electric resistance of the coils 5a and 5b. Can be done.
　図１６は、実施の形態１の第１の変形例に係る電動機の固定子の斜視図である。図１７は、実施の形態１の第１の変形例に係る電動機の固定子の側面図である。実施の形態１の第１の変形例に係る電動機２０の固定子１は、インシュレータと称されるプラスチック成型品１４によって、固定子鉄心４の端面とコイル５ａ，５ｂとが絶縁されている。プラスチック成型品１４を用いることにより、フィルム６を用いる場合よりもコイルエンド８を小さくすることができる。 FIG. 16 is a perspective view of the stator of the motor according to the first modification of the first embodiment. FIG. 17 is a side view of the stator of the motor according to the first modification of the first embodiment. In the stator 1 of the electric motor 20 according to the first modification of the first embodiment, the end face of the stator core 4 and the coils 5a and 5b are insulated by a plastic molded product 14 called an insulator. By using the plastic molded product 14, the coil end 8 can be made smaller than when the film 6 is used.
　図１８は、実施の形態１の第２の変形例に係る電動機の固定子の斜視図である。図１９は、実施の形態１の第２の変形例に係る電動機の固定子の側面図である。固定子鉄心４は、コイル５ａ，５ｂの組付後に分割されておらず、固定子鉄心４の軸方向の一端側の端面に隣接して補助鉄心１１が配置されている。固定子鉄心４の軸方向の一端側の端面に隣接して補助鉄心１１を配置することにより、固定子鉄心４がコイル５ａ，５ｂに対して軸方向にずれ、固定子鉄心４の一端側及び他端側の両方で余剰部８ａが無くなっている。実施の形態１の第２の変形例に係る電動機２０の固定子１は、コイル５ａ，５ｂの組付後に固定子鉄心４を分割する作業が不要であるため、固定子１の製造工程を簡略化できる。 FIG. 18 is a perspective view of the stator of the motor according to the second modification of the first embodiment. FIG. 19 is a side view of the stator of the motor according to the second modification of the first embodiment. The stator core 4 is not divided after the coils 5a and 5b are assembled, and the auxiliary core 11 is arranged adjacent to the end surface of the stator core 4 on one end side in the axial direction. By arranging the auxiliary core 11 adjacent to the end surface on one end side of the stator core 4 in the axial direction, the stator core 4 is displaced axially with respect to the coils 5a and 5b, and the stator core 4 is displaced on one end side and the stator core 4. The surplus portion 8a is eliminated on both sides of the other end. Since the stator 1 of the motor 20 according to the second modification of the first embodiment does not require the work of dividing the stator core 4 after assembling the coils 5a and 5b, the manufacturing process of the stator 1 is simplified. Can be changed.
　実施の形態１に係る電動機２０は、コイルエンド８に余剰部８ａが無く、補助鉄心１１の寸法分だけ、固定子１の鉄心の長さが長くなるため、コイル５ａ，５ｂの磁気抵抗を増加させることなく、磁束を増やすことができる。また、固定子鉄心４は、コアバック部７２とティース部７１とが一体であり、コアバック部７２とティース部７１との境界部で磁気抵抗が生じない。したがって、実施の形態１に係る電動機２０は、高出力化及び高効率化を実現できる。また、固定子鉄心４は、コアバック部７２とティース部７１とが一体であるため、コアバック部７２とティース部７１とを組み立てる作業は不要であり、組立誤差が生じないことから固定子鉄心４の寸法精度を高めることができる。 In the electric motor 20 according to the first embodiment, the coil end 8 has no surplus portion 8a, and the length of the core of the stator 1 is increased by the dimension of the auxiliary core 11, so that the magnetic resistance of the coils 5a and 5b is increased. The magnetic flux can be increased without causing it. Further, in the stator core 4, the core back portion 72 and the teeth portion 71 are integrated, and no magnetic resistance is generated at the boundary portion between the core back portion 72 and the teeth portion 71. Therefore, the electric motor 20 according to the first embodiment can realize high output and high efficiency. Further, in the stator core 4, since the core back portion 72 and the teeth portion 71 are integrated, the work of assembling the core back portion 72 and the teeth portion 71 is unnecessary, and an assembly error does not occur. Therefore, the stator core 4 does not cause an assembly error. The dimensional accuracy of 4 can be improved.
　図２０は、実施の形態１に係る電動機を搭載した換気扇の背面図である。実施の形態１に係る電動機２０は、換気扇１００のファン１０１を回転させる動力源に用いられている。換気扇１００のファン１０１を回転させる動力源に電動機２０を用いることで、風量及び風圧の増大及び低騒音化を実現できる。 FIG. 20 is a rear view of a ventilation fan equipped with a motor according to the first embodiment. The electric motor 20 according to the first embodiment is used as a power source for rotating the fan 101 of the ventilation fan 100. By using the electric motor 20 as the power source for rotating the fan 101 of the ventilation fan 100, it is possible to increase the air volume and the wind pressure and reduce the noise.
　なお、ここでは、電動機２０を備えた換気扇１００について説明したが、電動機２０は、換気扇１００に限定されることなく、送風機及びサーキュレータといった送風装置全般に用いることが可能である。 Although the ventilation fan 100 provided with the electric motor 20 has been described here, the electric motor 20 is not limited to the ventilation fan 100 and can be used for all blower devices such as a blower and a circulator.
　以上の実施の形態に示した構成は、内容の一例を示すものであり、別の公知の技術と組み合わせることも可能であるし、要旨を逸脱しない範囲で、構成の一部を省略、変更することも可能である。 The configuration shown in the above embodiment is an example of the content, can be combined with another known technique, and a part of the configuration is omitted or changed without departing from the gist. It is also possible.
　１　固定子、２　回転子、３　外郭、３ａ　フレーム、３ｂ　ブラケット、４　固定子鉄心、５ａ，５ｂ　コイル、６　フィルム、６ａ　重複部、８　コイルエンド、８ａ　余剰部、９　隙間、１０　段差、１１　補助鉄心、１２　補助ティース部、１３　スロットオープン、１４　プラスチック成型品、１５，７２　コアバック部、２０　電動機、３０　治具、４１　第１の固定子鉄心、４２　第２の固定子鉄心、７１　ティース部、７３　チップ部、１００　換気扇、１０１　ファン。 1 stator, 2 rotor, 3 outer shell, 3a frame, 3b bracket, 4 stator core, 5a, 5b coil, 6 film, 6a overlapping part, 8 coil end, 8a surplus part, 9 gap, 10 step, 11 auxiliary Iron core, 12 auxiliary teeth part, 13 slot open, 14 plastic molded product, 15,72 core back part, 20 electric motor, 30 jigs, 41 first stator core, 42 second stator core, 71 teeth part, 73 tip part, 100 ventilation fan, 101 fan.

Claims (8)

  1. 　固定子及び回転子を備え、
    　前記固定子は、
    　前記回転子の回転軸の周方向に延びるコアバック部と、前記コアバック部から前記回転軸に向かって突出する複数のティース部とを備え、前記コアバック部と前記ティース部とは一体である固定子鉄心と、
    　前記ティース部同士の間の空間であるスロットに配置されて前記ティース部に巻回されるコイルと、
    　前記回転軸の軸方向において前記固定子鉄心に隣接して配置されるか、又は前記軸方向において前記固定子鉄心を分断して配置される補助鉄心と、
    　前記スロットに配置されて、前記固定子鉄心及び前記補助鉄心と、前記コイルとを絶縁する絶縁部材とを備えることを特徴とする電動機。     Equipped with a stator and rotor,
    The stator is
    A core back portion extending in the circumferential direction of the rotation axis of the rotor and a plurality of teeth portions protruding from the core back portion toward the rotation axis are provided, and the core back portion and the teeth portion are integrated. Stator iron core and
    A coil arranged in a slot, which is a space between the teeth portions, and wound around the teeth portions.
    An auxiliary core which is arranged adjacent to the stator core in the axial direction of the rotation axis or is arranged by dividing the stator core in the axial direction.
    An electric motor arranged in the slot and provided with an insulating member that insulates the stator core, the auxiliary core, and the coil.
  2. 　前記絶縁部材は、二つに分かれており、前記軸方向に並べられて、前記スロット内で一部が重なり合っていることを特徴とする請求項１に記載の電動機。 The motor according to claim 1, wherein the insulating member is divided into two, arranged in the axial direction, and partially overlapped in the slot.
  3. 　前記絶縁部材は、フィルムであることを特徴とする請求項１又は２に記載の電動機。 The motor according to claim 1 or 2, wherein the insulating member is a film.
  4. 　前記絶縁部材は、樹脂成型品であることを特徴とする請求項１又は２に記載の電動機。 The motor according to claim 1 or 2, wherein the insulating member is a resin molded product.
  5. 　前記補助鉄心は、ストレート形状の補助ティース部を備えることを特徴とする請求項１から４のいずれか１項に記載の電動機。 The electric motor according to any one of claims 1 to 4, wherein the auxiliary iron core is provided with a straight-shaped auxiliary tooth portion.
  6. 　前記固定子の内側に前記回転子が配置されるインナーロータ型であり、
    　前記回転子及び前記固定子を収容する外郭を備え、
    　前記補助鉄心は、前記外郭に押さえられて前記固定子鉄心に固定されていることを特徴とする請求項１から５のいずれか１項に記載の電動機。     It is an inner rotor type in which the rotor is arranged inside the stator.
    It is provided with an outer shell for accommodating the rotor and the stator.
    The electric motor according to any one of claims 1 to 5, wherein the auxiliary core is pressed by the outer shell and fixed to the stator core.
  7. 　請求項１から６のいずれか１項に記載の電動機を備えたことを特徴とする送風装置。 A blower device provided with the motor according to any one of claims 1 to 6.
  8. 　固定子と回転子とを備えた電動機の製造方法であって、
    　前記回転子の回転軸の周方向に延びるコアバック部と、前記コアバック部から前記回転軸に向かって突出する複数のティース部とが一体である固定子鉄心の前記ティース部にコイルを巻回する工程と、
    　前記固定子鉄心を軸方向に分割する工程と、
    　分割された前記固定子鉄心の間に補助鉄心を挿入する工程とを備えることを特徴とする電動機の製造方法。     It is a method of manufacturing an electric motor equipped with a stator and a rotor.
    A coil is wound around the teeth portion of the stator core in which a core back portion extending in the circumferential direction of the rotation shaft of the rotor and a plurality of teeth portions protruding from the core back portion toward the rotation shaft are integrated. And the process to do
    The step of dividing the stator core in the axial direction and
    A method for manufacturing an electric motor, which comprises a step of inserting an auxiliary core between the divided stator cores.
PCT/JP2020/023292 2020-06-12 2020-06-12 Electric motor, blower device, and method for manufacturing electric motor WO2021250903A1 (en)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11289696A (en) * 1998-03-31 1999-10-19 Nissan Motor Co Ltd Stator and its manufacturing method
JP2002315251A (en) * 2001-04-12 2002-10-25 Okuma Corp Stator of motor and method of manufacturing the same
JP2007274749A (en) * 2006-03-30 2007-10-18 Toyota Motor Corp Stator, motor and method for manufacturing stator
JP2008079485A (en) * 2006-09-25 2008-04-03 Mitsubishi Electric Corp Stator in dynamo-electric machine and manufacturing method of same
JP2014033482A (en) * 2012-08-01 2014-02-20 Kobe Steel Ltd Stator, motor including the stator, and manufacturing method of motor
JP2019022425A (en) * 2017-07-21 2019-02-07 三菱電機株式会社 Stator core, manufacturing apparatus for stator core, manufacturing method for stator core, electric motor and blower

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11289696A (en) * 1998-03-31 1999-10-19 Nissan Motor Co Ltd Stator and its manufacturing method
JP2002315251A (en) * 2001-04-12 2002-10-25 Okuma Corp Stator of motor and method of manufacturing the same
JP2007274749A (en) * 2006-03-30 2007-10-18 Toyota Motor Corp Stator, motor and method for manufacturing stator
JP2008079485A (en) * 2006-09-25 2008-04-03 Mitsubishi Electric Corp Stator in dynamo-electric machine and manufacturing method of same
JP2014033482A (en) * 2012-08-01 2014-02-20 Kobe Steel Ltd Stator, motor including the stator, and manufacturing method of motor
JP2019022425A (en) * 2017-07-21 2019-02-07 三菱電機株式会社 Stator core, manufacturing apparatus for stator core, manufacturing method for stator core, electric motor and blower

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