WO2012131776A1 - Moteur électrique et procédé pour produire un moteur électrique - Google Patents

Moteur électrique et procédé pour produire un moteur électrique Download PDF

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Publication number
WO2012131776A1
WO2012131776A1 PCT/JP2011/001917 JP2011001917W WO2012131776A1 WO 2012131776 A1 WO2012131776 A1 WO 2012131776A1 JP 2011001917 W JP2011001917 W JP 2011001917W WO 2012131776 A1 WO2012131776 A1 WO 2012131776A1
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WO
WIPO (PCT)
Prior art keywords
stator
mold
electric motor
coil
stator core
Prior art date
Application number
PCT/JP2011/001917
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English (en)
Japanese (ja)
Inventor
後藤　隆
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 JP2013505012A priority Critical patent/JP5269270B2/ja
Priority to PCT/JP2011/001917 priority patent/WO2012131776A1/fr
Publication of WO2012131776A1 publication Critical patent/WO2012131776A1/fr

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
    • H02K21/38—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with rotating flux distributors, and armatures and magnets both stationary
    • H02K21/44—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with rotating flux distributors, and armatures and magnets both stationary with armature windings wound upon the magnets
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
    • H02K11/30—Structural association with control circuits or drive circuits
    • H02K11/33—Drive circuits, e.g. power electronics
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/46—Fastening of windings on the stator or rotor structure
    • H02K3/52—Fastening salient pole windings or connections thereto
    • H02K3/521—Fastening salient pole windings or connections thereto applicable to stators only
    • H02K3/522—Fastening salient pole windings or connections thereto applicable to stators only for generally annular cores with salient poles
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K2201/00—Specific aspects not provided for in the other groups of this subclass relating to the magnetic circuits
    • H02K2201/12—Transversal flux machines

Definitions

  • the present invention relates to an electric motor having a stator having a U-shaped coil mounted on a tooth, and a manufacturing method thereof.
  • a U-shaped coil formed in advance in a U-shape is inserted into an adjacent slot with a stator tooth interposed therebetween, and ends of adjacent U-shaped coils are connected to TIG (Tungsten). Inert Gas) was connected by welding or the like (for example, see Patent Document 1).
  • TIG welding if the positional relationship (height and gap) of the U-shaped coil ends to be welded varies, the weldability deteriorates, and in the worst case, welding cannot be performed, leading to poor conduction. Therefore, conventionally, in order to suppress variations in the height direction, TIG welding has been performed after aligning the heights of the end portions of the respective U-shaped coils using a dedicated jig.
  • the conventional electric motor Since the conventional electric motor is configured as described above, it takes time to insert a U-shaped coil into the stator slot.
  • a dedicated jig is required to suppress the variation in the height direction of the U-shaped coil during welding, and it takes time and effort to adjust the height by installing the U-shaped coil on the jig. For this reason, there is a problem that the number of parts increases and work efficiency is poor.
  • the present invention has been made to solve the above-described problems.
  • the present invention simplifies the assembly process of the U-shaped coil including the welding operation, ensures the insulating property of the U-shaped coil, and eliminates the gap from the gap.
  • the purpose is to prevent liquid intrusion.
  • the electric motor of the present invention includes a cylindrical housing, a rotor portion that is rotatably held in a central portion of the housing, and a stator portion that is press-fitted and fixed at a position surrounding the outer periphery of the rotor portion of the housing,
  • a stator core formed with an annular body and a plurality of teeth projecting from the inner peripheral portion of the annular body toward the center, an annular magnetomotive force generating portion that magnetizes the rotor portion in the rotation axis direction, and each tooth of the stator core
  • It consists of a U-shaped coil that is mounted and generates the rotational force of the rotor part, and a resin member that is sandwiched between stator coils provided on both sides of the magnetomotive force generating part, and that is integrally formed by arranging the coil on each tooth. It has a generating part, a stator core, and a mold part for holding a coil.
  • the method of manufacturing an electric motor according to the present invention is arranged such that a coil formed by bending a plate member into a U shape is disposed at a predetermined position of a mold in a state where the magnetomotive force generating portion is sandwiched between stator cores provided on both sides.
  • the stator core and the coil integrally to form the stator portion, it is possible to save the trouble of inserting the U-shaped coil into the slot of the stator core at the time of welding and the trouble of adjusting the height using a dedicated jig. Therefore, the assembly process can be simplified. Moreover, since a mold part isolate
  • FIG. 1 is an exploded perspective view showing a configuration of an electric motor according to Embodiment 1.
  • FIG. 3 (a) is an external appearance perspective view
  • FIG.3 (b) is a side view.
  • FIG.3 is a plan view showing a configuration of a stator core of the electric motor according to Embodiment 1.
  • FIG. 6 is a cross-sectional view showing a modification of the electric motor according to Embodiment 1.
  • FIG. An electric motor 1 shown in FIGS. 1 and 2 constitutes a three-phase AC synchronous motor, and mainly includes a cylindrical housing 2, a stator ASSY (stator portion) 3 press-fitted and fixed to the housing 2, and a shaft (not shown). And a rotor (rotor part) 9 to be rotated.
  • the rotor 9 has two protrusions protruding radially outward at intervals of 180 degrees, and the protrusions are shifted by 90 degrees in the middle of the rotation axis direction X (protrusions 9a and 9b).
  • the rotor 9 may be composed of a permanent magnet.
  • the electric motor 1 when the electric motor 1 is exposed to a high temperature, the magnetic characteristics are deteriorated. For example, it is better to construct a structure in which, for example, electromagnetic steel sheets are punched out and stacked in the rotation axis direction X. preferable. Even when the rotor 9 is formed of laminated steel plates, the protrusions are shifted by 90 degrees in the middle of the rotation axis direction X (protrusions 9a and 9b).
  • the electric motor 1 is applied to an automobile turbocharger, an electric compressor, or the like, a shaft fixed to the rotor 9 is connected to a rotating shaft of a turbine (so-called impeller), and the electric motor 1 rotates the turbine.
  • FIG. 3A is an external perspective view showing the configuration of the stator ASSY 3, and FIG. 3B shows a side view.
  • FIG. 4 shows a cross-sectional view of the stator ASSY 3 in FIG. 3B cut along the line BB.
  • the stator ASSY 3 includes two stator cores 4, 5, a magnet part (magnetomotive force generating part) 6 disposed between the stator cores 4, 5, a plurality of U-shaped coils 8, and a mold part for integrating them. 7.
  • FIG. 5 shows a plan view of the stator core 4.
  • the stator core 4 is formed by stacking electromagnetic steel plates in the rotation axis direction X of the rotor 9.
  • the stator core 4 includes an annular body and six projecting portions (hereinafter referred to as teeth 4a) projecting from the inner peripheral portion of the annular body toward the center.
  • a U-shaped coil 8 is attached to each of the teeth 4a.
  • electromagnetic steel sheets are punched out to provide six protruding teeth 4a in the circumferential direction at intervals of 60 degrees, and further, caulking protrusions 4b are formed at 60 degrees in each of six recesses formed alternately with the teeth 4a. Provide at intervals.
  • a plurality of positioning recesses 4c are provided on the outer periphery of the electromagnetic steel sheet.
  • a plurality of the electromagnetic steel sheets are laminated, and the protrusions 4b are caulked and bound to form the stator core 4.
  • the stator core 5 is also formed.
  • the magnet unit 6 has an annular shape and is configured by combining a plurality of permanent magnets.
  • six fan-shaped permanent magnets having a central angle of 60 degrees are used, which is the same number as the teeth 4a.
  • the outer peripheral portion 6b of one permanent magnet 6a is arranged so as to cover the outer side in the radial direction corresponding to the teeth 4a forming portion of the stator core 4 (the same applies to the stator core 5).
  • each of the six permanent magnets is arranged in the same manner as the permanent magnet 6a shown in FIG.
  • Each permanent magnet is positioned such that both end portions on the inner peripheral side are in contact with the projections 4 a of the stator cores 4, 5.
  • the divided portions of the permanent magnets do not overlap the teeth 4a when viewed from the rotation axis direction X, the magnetic characteristics can be improved.
  • the mold part 7 is composed of a resin member that integrally molds the stator cores 4 and 5, the magnet part 6, and the six U-shaped coils 8.
  • the procedure of integral molding will be described later.
  • the U-shaped coil 8 is a one-turn coil obtained by bending a copper plate into a U-shape. As shown in FIGS. 3A and 4, the U-shaped coil 8 penetrates the mold portion 7 in the rotation axis direction X, and the bent portion is A tip portion protrudes on the stator core 4 side and on the stator core 5 side. As shown in a region A surrounded by a solid line in FIG. 1, the tip portions of the six U-shaped coils 8 are adjusted to the same height in the integrally formed stator ASSY 3. This region A becomes a TIG weld.
  • one end of the U-shaped coil 8 that has penetrated the mold part 7 penetrates the connection plate ASSY 10 and protrudes toward the control circuit board 12, and is an energizing member molded on the connection plate ASSY 10. It is connected to a certain copper plate coil 11 (U phase, V phase, W phase).
  • the copper plate coil 11 is connected to the control circuit board 12.
  • the control circuit board 12 has an inverter, converts an external power source (not shown) input from the connector unit 14 into an alternating current, and based on the position signal input from the position detection sensor 15, the U phase of the copper plate coil 11, A current is passed through the U-shaped coil 8 by sequentially switching the three phases of the V phase and the W phase.
  • the U-shaped coil 8 and the stator cores 4 and 5 are insulated from each other by the mold portion 7.
  • the position detection sensor 15 includes a Hall element IC (Integrated Circuit) that detects the position of a sensor target 16 (for example, a magnet) that rotates integrally with the rotor 9.
  • the position detection sensor 15 detects the rotational position of the rotor 9 by detecting the position of the sensor target 16 and outputs a position signal to the control circuit board 12.
  • the opening surface of the housing 2 on the control circuit board 12 side is covered with a cover 13 to protect the control circuit board 12 and the position detection sensor 15 and the like.
  • an O-ring 17 is provided and sealed in the press-fitting portion of the housing 2 and the stator ASSY 3.
  • FIG. 6 is an enlarged view of the stator ASSY3 press-fitting portion of the electric motor 1 shown in FIG.
  • Magnetic flux (magnet magnetic flux) generated by the magnet portion 6 magnetized in the rotation axis direction X flows out of the teeth 4a of the stator core 4 arranged on the N pole side of the magnet portion 6 to the protrusion of the rotor 9, and the rotation of the rotor 9
  • the magnetic field magnetic flux flows in the axial direction X, exits from the protrusion on the S pole side of the magnet portion 6, and flows into the teeth 4 a of the stator core 5 disposed on the S pole side of the magnet portion 6.
  • FIG. 7 is a plan view of the electric motor 1 shown in FIG. 1 as viewed from the left side of the drawing. However, illustration of the housing 2 and the U-shaped coil 8 is omitted.
  • a current flows through the U-shaped coil 8 via the copper plate coil 11
  • each tooth of the stator ASSY 3 is magnetized according to the direction of the flowing current, and a rotating magnetic field is generated to generate torque.
  • the NS polarities of the teeth rotate as shown in FIGS. 7A to 7C, and the rotor 9 rotates due to the magnetic action. .
  • FIG. 8A is a schematic view showing a cross section of a mold for molding the stator ASSY 3 and corresponds to a cross section cut along the CC line of FIG.
  • the mold is composed of a combination of an upper mold 20, a lower mold 21, and a middle shaft 22, and a gap 23 in which the stator cores 4, 5 and the magnet portion 6 are installed, a U-shaped coil 8 and resin are injected.
  • the gap 24 for molding the mold part 7 is provided concentrically.
  • the partition of the upper mold 20 and the lower mold 21 may be arbitrary.
  • the middle shaft 22 is a mold that forms a space for disposing the rotor 9, and has a shape in which the outer peripheral surface of the middle shaft 22 is in contact with the tips of the teeth 4 a of the stator cores 4, 5.
  • FIG. 8B is a diagram showing the relationship between the U-shaped coil 8 and the mold as seen from the direction of the arrow in FIG.
  • the upper mold 20 is provided with a pair of positioning guides 28 that sandwich the bent portion of the U-shaped coil 8.
  • FIG. 8A shows a mold structure of a portion where the U-shaped coil 8 positioned on the farthest side in the drawing among the six U-shaped coils 8 is actually installed. Although illustration is omitted, the same structure is provided for the remaining five U-shaped coils 8, and positioning portions 25 for positioning the U-shaped coils 8 are respectively formed at the same height position.
  • a plurality of positioning protrusions (not shown) in the same direction as the axial direction of the middle shaft 22 are formed on the wall surface of the gap 23 of the lower mold 21 so that the positioning protrusions engage with the positioning recesses 4 c of the stator core 5.
  • the stator core 5 is installed in the gap 23.
  • the magnet portion 6 is disposed on the upper side of the stator core 5.
  • the six permanent magnets are arranged in an annular shape, but since the caulking projections 4b protrude from the stator core 5 every 60 degrees, the respective projections 4b are arranged as a guide.
  • FIG. 9A shows an enlarged side view of a divided portion of the projection 4b and the permanent magnet 6a provided on the inner peripheral portion of the stator core 5, and FIG. 9B shows a plan view thereof.
  • each permanent magnet 6a is positioned in contact with the caulking projection 4b.
  • the stator core 4 is installed on the upper side of the magnet portion 6 so that the positioning concave portion 4 c of the stator core 4 engages with the positioning convex portion of the gap 23. Thereby, the phase alignment of each tooth 4a of the stator cores 4 and 5 can be easily performed.
  • the six U-shaped coils 8 are fitted into the gap 24 of the lower mold 22 from the front end portion and brought into contact with the abutting portion 25. Since the U-shaped coil 8 is a plate member having a width, the tip end portion comes into contact with the abutting portion 25 and becomes self-supporting. Even if there is a dimensional variation in the longitudinal direction of the U-shaped coil 8, it is absorbed by the clearance 26 of the upper mold 20. Thus, by applying the U-shaped coil 8 to the mold, the height position of the tip of each U-shaped coil 8 is aligned, and the weldability is improved.
  • tip parts of each U-shaped coil 8 can also be made into the clearance gap suitable for welding.
  • the stator cores 4 and 5, the magnet portion 6, and the U-shaped coil 8 are installed, the upper mold 20, the lower mold 21, and the middle shaft 22 are fitted.
  • the positioning pin 27 of the upper mold 20 is fitted into the positioning pin insertion hole 8 a of the U-shaped coil 8, and the positioning guide 28 sandwiches the bent portion of the U-shaped coil 8. Therefore, even if the U-shaped coil 8 has dimensional variations, the rotational movement of the arrow D and the deviation of the arrow E shown in FIG. 8B are regulated by the two positioning pins 27, and the deviation of the arrow F is a pair of It is regulated by the positioning guide 28 and fits in the mold gap.
  • the resin member forming the mold part 7 preferably has at least thermosetting properties, for example, polyphenylene sulfide resin (PPS) is used. .
  • PPS polyphenylene sulfide resin
  • the integrally molded stator ASSY 3 When the integrally molded stator ASSY 3 is installed in the housing 2, it is press-fitted from one end side of the housing 2 and fixed as shown in FIG. 6.
  • the housing 2 is provided with a press-fit portion 2a having a slightly smaller inner diameter, and the press-fit portion 2a holds the press-fitted stator core 5.
  • the connection plate ASSY 10 is press-fitted and fixed to the housing 2, and the tip end portion of the U-shaped coil 8 and the copper plate coil 11 are connected by TIG welding. Since the height direction of the front end portion of each U-shaped coil 8 and the interval between the U-shaped coils 8 are adjusted during the integral molding, welding can be reliably performed without using a conventional dedicated jig during welding. it can.
  • the rotor 9 fixed to the shaft (not shown) is inserted into the central opening portion of the stator ASSY 3. Since the inner peripheral surface of the mold portion 7 and the tip end surface of the teeth are flush with each other, the central opening portion of the stator ASSY 3 is not uneven and the rotor 9 can be easily inserted.
  • the U-shaped coil 8 works as a core material of the mold part 7 and the strength against vibration increases. Thereby, when the vibration of the direction orthogonal to the rotating shaft direction X of the rotor 9 is applied, it can suppress that a mold part 7 cracks.
  • FIG. 10 is a cross-sectional view showing a configuration in which the electric motor 1 is applied to an electric compressor motor.
  • the electric motor 1 is fastened to a bearing housing 30 of an electric compressor, and the shaft 31 and the rotor 9 are connected.
  • the bearing housing 30 is provided with a bearing 32 that rotatably holds the shaft 31 and an oil reservoir 33 that supplies lubricating oil to the bearing 32.
  • a seal structure is formed on the bearing housing 30 side.
  • the seal structure needs to be inserted through the shaft 31, it cannot be a complete seal structure. Therefore, it can be an oil intrusion route indicated by an arrow G. If the oil in the oil reservoir 33 enters the inside of the electric motor 1, particularly the control circuit board 12, there is a possibility that problems such as damage to elements and defective energization may occur.
  • the oil that has entered the inside of the electric motor 1 enters the clearance between the housing 2 and the stator ASSY 3, but since the press-fitting portion 2 a is sealed by the O-ring 17, the direction toward the control circuit board 12 (arrow H shown in FIG. 10). Oil intrusion can be prevented.
  • an O-ring may be installed and sealed in the press-fitting portion 2b of the housing 2 and the connection plate ASSY 10 to prevent oil intrusion in the direction of the arrow H.
  • an O-ring may be installed in each of the press-fit portions 2a and 2b to enhance the sealing function.
  • the stator ASSY 3 of the electric motor 1 includes the stator cores 4 and 5 in which the annular body and the six teeth 4a protruding from the inner peripheral portion of the annular body toward the center are formed.
  • An annular magnet portion 6 that magnetizes the rotor 9 in the rotation axis direction X, a U-shaped coil 8 that is attached to each tooth 4a of the stator cores 4 and 5 and generates the rotational force of the rotor 9, and the magnet portion 6 on both sides
  • the molded portion 7 is composed of a resin member that is sandwiched between the provided stator cores 4 and 5 and that is integrally formed by arranging the U-shaped coils 8 in the respective teeth 4 a and holds the magnet portion 6, the stator cores 4 and 5, and the U-shaped coils 8.
  • the trouble of mounting the U-shaped coil 8 on each of the teeth 4a of the stator cores 4 and 5 at the time of welding can be saved, and the assembly process can be simplified.
  • separates between the stator cores 4 and 5 and the U-shaped coil 8 insulation can be ensured, without performing an insulation process at another process.
  • the mold part 7 seals the gap between the U-shaped coils 8, the intrusion of liquids such as oil and water can be prevented.
  • the U-shaped coil 8 is integrally formed in the mold part 7 and works as a core material, the strength of the stator ASSY 3 can be improved.
  • the resin member of the mold part 7 has thermosetting properties, the heat resistance of the stator ASSY 3 is improved and thermal deformation can be suppressed. For this reason, the electric motor 1 can be used at high temperatures by using it for automobile parts and the like.
  • PPS excellent in heat resistance and water resistance is suitable as the resin member.
  • the plate member is bent into a U shape to form the U-shaped coil 8, and the height position of the bent distal end portion of each U-shaped coil 8 held by the mold portion 7 is made the same. Therefore, the variation in the height direction of the TIG welded portion can be reduced without using a dedicated jig during TIG welding.
  • the magnet portion 6 is disposed in the gap 23 of the lower mold 21 with the stator cores 4, 5 provided on both sides, and the U-shaped coil is disposed. 8 is arranged around each tooth 4a in a state in which the bent end portion of 8 is applied to the abutting portion 25 provided on the inner wall of the bottom surface of the lower die 21, and the upper die 20, the lower die 21 and the middle shaft 22 are fitted. Then, the resin member is injected to integrally mold the stator assembly 3 to form the mold portion 7.
  • the magnet part 6 in which a plurality of permanent magnets are annularly arranged between the stator cores 4 and 5 is used.
  • an exciting coil (magnetomotive force generating portion) 42 in which a conductive material 41 is wound in a radial direction around an annular bobbin 40 having a U-shaped cross section may be used.
  • a yoke 43 is provided on the outer periphery of the stator cores 4 and 5 and the exciting coil 42 to form a field magnetic path.
  • the coil wound around each tooth of the stator core is a one-turn U-shaped coil.
  • the present invention is not limited to this.
  • a total of six teeth for the stator core, two each for the U phase, the V phase, and the W phase, are provided, the present invention is not limited to this.
  • the present invention can be modified in any component of the embodiment or omitted in any component within the scope of the invention.
  • the stator ASSY including the U-shaped coil is integrally formed with the thermosetting resin member, so that the turbocharger for automobiles and the electric compressor exposed to high temperatures are rotationally driven. Suitable for use in electric motors.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Manufacture Of Motors, Generators (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)
  • Insulation, Fastening Of Motor, Generator Windings (AREA)

Abstract

Dans la présente invention, un ensemble stator (3) comprend : des noyaux de stator (4, 5) dans lesquels un corps annulaire et une pluralité de dents en saillie depuis la périphérie interne du corps annulaire vers le centre sont formés ; un aimant annulaire (6) qui est pris en sandwich entre les noyaux de stator (4, 5) et qui magnétise un rotor (9) dans le sens de l'axe de rotation (X); une bobine en U (8) qui est montée sur chacune des dents des noyaux de stator (4, 5) et qui génère la force de rotation du rotor (9) ; et une section moulée (7) qui est formée par moulage solidaire des noyaux de stator (4, 5), de l'aimant (6) et de la bobine en U (8) au moyen d'un élément en résine. L'ensemble stator (3) est fixé de manière ajustée à un logement (2) depuis une direction.
PCT/JP2011/001917 2011-03-30 2011-03-30 Moteur électrique et procédé pour produire un moteur électrique WO2012131776A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2013505012A JP5269270B2 (ja) 2011-03-30 2011-03-30 電動機および電動機の製造方法
PCT/JP2011/001917 WO2012131776A1 (fr) 2011-03-30 2011-03-30 Moteur électrique et procédé pour produire un moteur électrique

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2011/001917 WO2012131776A1 (fr) 2011-03-30 2011-03-30 Moteur électrique et procédé pour produire un moteur électrique

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WO2012131776A1 true WO2012131776A1 (fr) 2012-10-04

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20180366996A1 (en) * 2017-06-20 2018-12-20 Dyson Technology Limited Brushless motor and stator therefor
JP2020509727A (ja) * 2017-02-17 2020-03-26 サントル ナシオナル ドゥ ラ ルシェルシェ シアンティフィクＣｅｎｔｒｅ Ｎａｔｉｏｎａｌ Ｄｅ Ｌａ Ｒｅｃｈｅｒｃｈｅ Ｓｃｉｅｎｔｉｆｉｑｕｅ 低電圧で電力供給される電気機械および関連するマルチセルパワートレイン

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05227683A (ja) * 1992-02-12 1993-09-03 Jeco Co Ltd モータ用磁石の固定方法
JPH08214519A (ja) * 1995-02-06 1996-08-20 Akira Chiba 永久磁石を用いた両突極性電動発電機
JP2002233089A (ja) * 2001-01-29 2002-08-16 Hitachi Ltd 回転電機の固定子
JP2005176470A (ja) * 2003-12-10 2005-06-30 Toyota Motor Corp 固定子の製造方法
WO2009136574A1 (fr) * 2008-05-08 2009-11-12 三菱電機株式会社 Moteur électrique rotatif et ventilateur l'utilisant
WO2009139278A1 (fr) * 2008-05-14 2009-11-19 三菱電機株式会社 Machine tournante à inducteur magnétique et dispositif de transfert de fluide l'utilisant

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05227683A (ja) * 1992-02-12 1993-09-03 Jeco Co Ltd モータ用磁石の固定方法
JPH08214519A (ja) * 1995-02-06 1996-08-20 Akira Chiba 永久磁石を用いた両突極性電動発電機
JP2002233089A (ja) * 2001-01-29 2002-08-16 Hitachi Ltd 回転電機の固定子
JP2005176470A (ja) * 2003-12-10 2005-06-30 Toyota Motor Corp 固定子の製造方法
WO2009136574A1 (fr) * 2008-05-08 2009-11-12 三菱電機株式会社 Moteur électrique rotatif et ventilateur l'utilisant
WO2009139278A1 (fr) * 2008-05-14 2009-11-19 三菱電機株式会社 Machine tournante à inducteur magnétique et dispositif de transfert de fluide l'utilisant

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2020509727A (ja) * 2017-02-17 2020-03-26 サントル ナシオナル ドゥ ラ ルシェルシェ シアンティフィクＣｅｎｔｒｅ Ｎａｔｉｏｎａｌ Ｄｅ Ｌａ Ｒｅｃｈｅｒｃｈｅ Ｓｃｉｅｎｔｉｆｉｑｕｅ 低電圧で電力供給される電気機械および関連するマルチセルパワートレイン
US20180366996A1 (en) * 2017-06-20 2018-12-20 Dyson Technology Limited Brushless motor and stator therefor
US11588360B2 (en) * 2017-06-20 2023-02-21 Dyson Technology Limited Brushless motor and stator therefor

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JPWO2012131776A1 (ja) 2014-07-24
JP5269270B2 (ja) 2013-08-21

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