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WO2020137039A1 - Moteur à enroulement distribué d'outil électrique, outil électrique et tondeuse à gazon - Google Patents

Moteur à enroulement distribué d'outil électrique, outil électrique et tondeuse à gazon Download PDF

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Publication number
WO2020137039A1
WO2020137039A1 PCT/JP2019/037125 JP2019037125W WO2020137039A1 WO 2020137039 A1 WO2020137039 A1 WO 2020137039A1 JP 2019037125 W JP2019037125 W JP 2019037125W WO 2020137039 A1 WO2020137039 A1 WO 2020137039A1
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WO
WIPO (PCT)
Prior art keywords
rotor
winding motor
distributed winding
electric tool
coil
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/JP2019/037125
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English (en)
Japanese (ja)
Inventor
淳哉 犬塚
青山　清
圭 神田
真貴 鎌田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Makita Corp
Original Assignee
Makita Corp
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 Makita Corp filed Critical Makita Corp
Publication of WO2020137039A1 publication Critical patent/WO2020137039A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01D—HARVESTING; MOWING
    • A01D34/00—Mowers; Mowing apparatus of harvesters
    • A01D34/01—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus
    • A01D34/412—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters
    • A01D34/63—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters having cutters rotating about a vertical axis
    • A01D34/67—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters having cutters rotating about a vertical axis hand-guided by a walking operator
    • A01D34/68—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters having cutters rotating about a vertical axis hand-guided by a walking operator with motor driven cutters or wheels
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G3/00—Cutting implements specially adapted for horticultural purposes; Delimbing standing trees
    • A01G3/08—Other tools for pruning, branching or delimbing standing trees
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
    • B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
    • 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
    • H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
    • H02K21/14—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures

Definitions

  • the present invention relates to a distributed winding motor for an electric tool, an electric tool, and a lawn mower.
  • a motor as a drive source is mounted on an electric tool such as a lawn mower or a chainsaw (for example, see Patent Document 1).
  • Patent Document 1 As a power tool, there is a technology described in Patent Document 1, for example.
  • a concentrated winding motor may be mounted.
  • the distributed winding motor can improve the magnet utilization rate, reduce the number of products, and reduce the torque ripple as compared with the concentrated winding motor. Therefore, mounting a distributed winding motor on an electric tool is under study.
  • the distributed winding motor has a longer coil end than the concentrated winding motor. When such a distributed winding motor is mounted on an electric tool, the product size becomes large. Therefore, there is a demand for a distributed winding motor that can prevent the power tool from increasing in size.
  • the present invention has been made in view of the above, and an object of the present invention is to provide a distributed winding motor for an electric tool, an electric tool, and a lawnmower that can suppress the size increase of the electric tool.
  • a stator having a stator core in which a coil is distributed in a plurality of slots, and a shaft which rotates with respect to the stator and outputs a driving force to a working portion of an electric tool.
  • a rotor having the rotor and the shaft are provided separately, and are arranged so as to overlap the coil end of the coil protruding from the stator core in the axial direction of the central axis of the rotor in the axial direction of the rotor.
  • a distributed winding motor for an electric power tool is provided.
  • a stator having a stator core in which a coil is wound so as to be distributed in a plurality of slots, and a rotor which rotates with respect to the stator and outputs a driving force to a working portion of an electric tool.
  • a coil end protruding from the stator core in the axial direction of the central axis of the rotor of the coil, the tip end portion being bent inward or outward in the radial direction orthogonal to the central axis.
  • a winding motor is provided.
  • an electric tool using the distributed winding motor for the electric tool.
  • a distributed winding motor including a battery, a coil supplied with electric power from the battery, a stator core around which the coil is wound, and a rotor rotatable with respect to the stator core, A cutting blade driven by a rotor, the rotary shaft of the rotor is arranged so as to extend in the vertical direction immediately below the battery, and the components of the distributed winding motor are arranged on the inner diameter side of the coil.
  • a lawn mower is provided.
  • FIG. 1 is a diagram showing an example of an electric power tool according to the present embodiment.
  • FIG. 2 is an enlarged view showing a part of the lawnmower.
  • FIG. 3 is a perspective view showing an example of the stator.
  • FIG. 4 is a diagram schematically showing the positional relationship between the teeth and slots and the coils.
  • FIG. 5 is a figure which shows typically an example of the cross-sectional structure of a motor.
  • FIG. 6 is a diagram schematically showing a cross-sectional configuration of a motor according to another example.
  • FIG. 7 is a figure which shows typically the cross-sectional structure of the motor which concerns on another example.
  • FIG. 8 is a figure which shows typically the cross-sectional structure of the motor which concerns on another example.
  • FIG. 1 is a diagram showing an example of an electric power tool according to the present embodiment.
  • FIG. 2 is an enlarged view showing a part of the lawnmower.
  • FIG. 3 is a perspective view showing an example of the stat
  • FIG. 9 is a figure which shows typically the cross-sectional structure of the motor which concerns on another example.
  • FIG. 10 is a figure which shows typically the cross-sectional structure of the motor which concerns on another example.
  • FIG. 11 is a figure which shows typically the cross-sectional structure of the motor which concerns on another example.
  • FIG. 1 is a diagram showing an example of an electric power tool according to the present embodiment.
  • FIG. 1 shows a lawn mower 100 as an example of an electric tool.
  • the lawnmower 100 shown in FIG. 1 includes a main body portion 10, a handle portion 20, a mowing box 30, and a battery mounting portion 40.
  • the lawn mower 100 has a configuration in which the main body 10 is placed on the ground and the handle 20 is gripped to move the main body 10.
  • the lawn mower 100 operates using, for example, the battery 41 as a power source.
  • the battery 41 for example, an electric tool battery is used.
  • the battery 41 may be rechargeable.
  • the battery 41 is mounted on the battery mounting portion 40.
  • the lawn mower 100 may be configured to be operated by a power source other than the battery 41.
  • the main body portion 10 has a main body housing 11, wheels 12, a cutting blade (working portion) 13, and a drive portion 14.
  • the main body housing 11 supports or holds the wheels 12, the cutting blade 13, and the drive unit 14.
  • four wheels 12 are provided on the main body housing 11.
  • the cutting blade 13 is rotatable about a central axis (central axis AX) inclined with respect to the ground when the four wheels 12 are grounded. By rotating the cutting blade 13, it is possible to mow grass or the like growing on the ground.
  • the grass cut off by the cutting blade 13 is stored in the cutting box 30.
  • the drive unit 14 is arranged above the cutting blade 13.
  • the drive unit 14 rotates the cutting blade 13 by the electric power of the battery 41 mounted on the battery mounting unit 40, for example. That is, the drive unit 14 outputs a driving force for the cutting blade 13.
  • the drive unit 14 has a motor 50.
  • the motor 50 is a distributed winding motor.
  • the motor 50 is a distributed winding motor, the magnet utilization rate is improved, the number of products can be reduced, and the torque ripple can be reduced as compared with the concentrated winding motor.
  • FIG. 2 is an enlarged view of a part of the lawnmower 100, showing a cross section of the motor 50.
  • the motor 50 has a stator 51, a rotor 52, a housing 53, a bearing 54, a connection portion 55, and a circuit board 56.
  • the stator 51 has a stator core 57 and a coil 58.
  • FIG. 3 is a perspective view showing an example of the stator 51.
  • the stator core 57 has a structure in which, for example, a plurality of electromagnetic steel plates are laminated in the axial direction of the central axis AX of the rotor 52.
  • the stator core 57 has a plurality of teeth 57a arranged in a circumferential direction around the center axis AX as viewed from the axial direction of the center axis AX.
  • a slot 57b is formed by the adjacent teeth 57a. In this embodiment, 12 teeth 57a and slots 57b are provided in the circumferential direction.
  • FIG. 5 is a diagram schematically showing a positional relationship between the teeth 57a, the slots 57b, and the coils 58.
  • the coil 58 is distributed and wound around the plurality of slots 57b.
  • the coil 58 is provided with coils 58 for three phases of U phase, V phase, and W phase, for example.
  • the coils 58 of each type are arranged with two slots 57b in the rotation direction.
  • the rotor 52 is disposed immediately below the battery 41 (immediately below the battery mounting portion 40 when the battery 41 is not mounted), and is rotatable about the central axis AX.
  • the rotor 52 is arranged so that the central axis AX extends in the vertical direction.
  • the rotor 52 has a rotor core 59 and a shaft 60.
  • the rotor core 59 holds a magnet that forms a magnetic pole.
  • the magnet is provided, for example, in a state of being embedded in the rotor core 59.
  • the shaft 60 is provided integrally with the rotor core 59.
  • the lower portion of the shaft 60 is connected to the cutting blade 13.
  • the rotation of the rotor 52 causes the cutting blade 13 to rotate in association with the rotation of the rotor 52.
  • the housing 53 houses the stator 51 and the rotor 52.
  • the housing 53 is formed using a resin material or a metal material.
  • the bearing 54 rotatably supports the rotor 52.
  • the bearing 54 is provided, for example, in a state where the outer peripheral portion is supported by the housing 53.
  • the connection part 55 is a part in which a plurality of coils 58 are connected to three terminal wires W (see FIG. 7) for three phases.
  • the wire connection portion 55 may have a structure in which the winding wire forming the coil 58 is manually connected, or may have a structure in which the conductive wire member is connected using a predetermined wire connection member.
  • the circuit board 56 includes a control circuit C (see FIG. 9) that controls the stator 51 based on a control signal from the controller CONT of the lawnmower 100.
  • FIG. 5 is a diagram schematically showing an example of a sectional configuration of the motor 50.
  • a space K is formed inside the coil end 58a.
  • a bearing 54 is housed in the space K.
  • a bearing support portion 53k which is a part of the housing 53, is inserted into the space K.
  • the bearing support portion 53k supports the outer peripheral surface of the bearing 54 on the inner peripheral surface.
  • the bearing 54 and the bearing support portion 53k are illustrated as being arranged in the lower space K, but the present invention is not limited to this.
  • the bearing 54 and the bearing support portion 53k may be arranged in the upper space K in FIG.
  • the bearing 54 and the bearing support portion 53k inserted into the space K are arranged to overlap the coil end 58a in the axial direction of the central axis AX.
  • the coil end 58a, the bearing 54, and the bearing support portion 53k are arranged at the overlapping position. In this way, the bearing 54 and the bearing support portion 53k form the overlap portion OL.
  • the motor 50 can be configured such that the dimension of the central axis AX in the axial direction is suppressed by disposing the bearing 54 and the bearing support portion 53k so as to overlap the coil end 58a.
  • FIG. 6 is a diagram schematically showing a cross-sectional configuration of a motor 50A according to another example.
  • a motor 50A shown in FIG. 6 has a configuration in which a protruding portion 59a of the rotor core 59 in the axial direction of the central axis AX protrudes toward the coil end 58a.
  • the projecting portions 59a on both sides of the rotor core 59 are projected, but the configuration is not limited to this, and only one projecting portion 59a may be projected.
  • the magnet 59b is embedded in the rotor core 59. In the present embodiment, the magnet 59b is also configured to project into the space K inside the coil end 58a.
  • the rotor core 59 including the magnet 59b inside is arranged in the space K so as to be overlapped with the coil end 58a in the axial direction of the central axis AX.
  • the coil end 58a and the rotor core 59 are arranged at a position where they overlap each other when viewed from a direction orthogonal to the axial direction of the central axis AX.
  • the protruding portion 59a of the rotor core 59 constitutes the overlap portion OLA.
  • the magnetic field from the portion of the magnet 59b protruding toward the coil end 58a is transmitted to the stator core 57 via the surface side of the rotor core 59.
  • the magnet 59b is arranged so as to project toward the coil end 58a, so that a strong magnetic force is transmitted to the stator core 57 and a large torque can be output.
  • the protruding portion 59a of the rotor core 59 is arranged so as to overlap the coil end 58a, so that the dimension of the central axis AX in the axial direction can be suppressed.
  • FIG. 7 is a diagram schematically showing a cross-sectional configuration of a motor 50B according to another example.
  • the motor 50B shown in FIG. 7 has a configuration in which the wire connection portion 55 is housed in the space K inside the coil end 58a.
  • the connection portion 55 inserted into the space K is arranged so as to overlap the coil end 58a in the axial direction of the central axis AX.
  • the coil end 58a and the connecting portion 55 are arranged at a position where they overlap.
  • the connection part 55 constitutes the overlap part OLB.
  • connection portion 55 By arranging the connection portion 55 so as to overlap the coil end 58a, it is possible to suppress the increase in size in the axial direction of the central axis AX. If the wire connecting portion 55 is not provided, the wire connecting portion of the coil 58 may be arranged so as to overlap the coil end 58a.
  • FIG. 8 is a diagram schematically showing a cross-sectional configuration of a motor 50C according to another example.
  • the motor 50C shown in FIG. 8 has a configuration in which the fan 61 is housed in the space K inside the coil end 58a.
  • the fan 61 inserted in the space K is arranged so as to overlap the coil end 58a in the axial direction of the central axis AX.
  • the coil end 58a and the fan 61 are arranged at a position where they overlap. In this way, the fan 61 constitutes the overlap part OLC.
  • the fan 61 is fixed to the shaft 60.
  • the fan 61 rotates integrally with the shaft 60 about the central axis AX.
  • an airflow is formed toward the outside of the space K in which the fan 61 is provided (downward in the drawing).
  • openings 53m and 53n through which air passes are formed in a part of the housing 53C.
  • the opening 53m is formed at the end opposite to the side where the fan 61 is arranged in the axial direction of the central axis AX.
  • the opening 53n is formed at the end on the side where the fan 61 is arranged in the axial direction of the central axis AX.
  • the motor 50C can have a configuration in which the dimension of the central axis AX in the axial direction is suppressed by disposing the fan 61 so as to overlap the coil end 58a. Further, the motor 50C can efficiently radiate the heat generated in the stator 51 including the coil 58 by forming the air flow with the fan 61.
  • FIG. 9 is a diagram schematically showing a cross-sectional configuration of a motor 50D according to another example.
  • the motor 50D shown in FIG. 9 has a configuration in which the circuit board 56 is housed in the space K inside the coil end 58a.
  • the circuit board 56 is attached to the stator 51 by, for example, the attachment member 62.
  • the attachment member 62 can be fitted and fixed between the teeth 57a formed in the stator core 57, for example.
  • a sensor S that detects the rotational position of the rotor 52 and a control circuit C that controls the stator 51 are mounted.
  • the sensor S and the control circuit C mounted on the circuit board 56 are over the coil end 58a in the axial direction of the central axis AX. Wrapped and placed.
  • the coil end 58a, the sensor S, and the control circuit C are arranged at the overlapping position. That is, the sensor S and the control circuit C form the overlap part OLD.
  • FIG. 10 is a diagram schematically showing a cross-sectional structure of a motor 50E according to another example.
  • the motor 50E shown in FIG. 10 has a configuration in which the balance adjusting unit 63 is housed in the space K inside the coil end 58a.
  • the balance adjustment unit 63 is a counter weight that adjusts the position of the center of gravity of the rotor 52.
  • the balance adjustment unit 63 is fixed to, for example, the shaft 60 and rotates integrally with the shaft 60.
  • the balance adjusting portion 63 is accommodated in the space K inside the coil end 58a, and thus is arranged so as to overlap the coil end 58a in the axial direction of the central axis AX.
  • the coil end 58a and the balance adjusting portion 63 are arranged at a position where they overlap.
  • the balance adjustment unit 63 constitutes the overlap unit OLE.
  • FIG. 11 is a diagram schematically showing a cross-sectional configuration of a motor 50F according to another example.
  • the motor 50F shown in FIG. 11 has a configuration in which the tip end portion of the coil end 58a is bent inward or outward in the radial direction orthogonal to the central axis AX.
  • the tip end portion of the coil end 58a When the tip end portion of the coil end 58a is bent outward in the radial direction, the tip end portion of the coil end 58a projects outward from the outer peripheral portion of the stator 51. Therefore, although the radial dimension is increased, the axial dimension of the central axis AX is suppressed because the tip portion is bent.
  • the motors 50, 50A to 50E which are the distributed winding motors for the lawn mower 100 according to the present embodiment, have the stator 51 having the stator core 57 in which the coils 58 are wound and distributed in the plurality of slots 57b.
  • a rotor 52 having a shaft 60 that rotates with respect to the stator 51 and outputs a driving force to the cutting blade 13 that is a working portion of the lawn mower 100;
  • the coil end 58a protruding from 57 in the axial direction of the central axis AX of the rotor 52 has an overlapping portion OL arranged so as to overlap in the axial direction of the rotor 52.
  • the motors 50 and 50A to 50E are distributed winding motors, the magnet utilization rate is improved, the number of products can be reduced, and the torque ripple can be reduced as compared with the concentrated winding motor. Further, since the motors 50, 50A to 50E have the overlapping portions, the size increase in the axial direction of the central axis AX is suppressed. Therefore, it is possible to prevent the lawnmower 100 from increasing in size.
  • the overlap portion is arranged in the space K inside the coil end 58a.
  • the overlap portion OL includes a bearing 54 that rotatably supports a shaft that rotates integrally with the rotor 52. Further, the overlap part OL includes a housing 53 having a bearing support part 53k that supports the bearing 54, and the overlap part OL includes the bearing support part 53k. In this configuration, the bearing 54 and the bearing support portion 53k overlap the coil end 58a, so that the motor components can be efficiently arranged in the axial direction of the central axis AX.
  • the rotor 52 has a protrusion 59a in which at least one end in the axial direction is arranged to protrude in the axial direction with respect to the stator core 57.
  • the overlapping portion OLA has a protruding portion 59a.
  • the components of the motor can be efficiently arranged in the axial direction of the central axis AX.
  • the magnet 59b is embedded in the rotor core 59, by overlapping the end of the magnet 59b with the coil end 58a, a strong magnetic force is transmitted to the stator core 57 and a large torque can be output.
  • the motor 50B which is the distributed winding motor for the lawnmower 100 according to the present embodiment, further includes a connection part 55 that connects the coil 58, and the overlap part OLB includes the connection part 55.
  • the wire connection portion 55 is arranged so as to overlap the coil end 58a, the increase in size in the axial direction of the central axis AX is suppressed.
  • the motor 50C which is a distributed winding motor for the lawnmower 100 according to the present embodiment, includes a fan 61 that rotates integrally with the rotor 52, and the overlap portion OLC includes the fan 61.
  • the fan 61 is disposed so as to overlap the coil end 58a, so that the dimension of the central axis AX in the axial direction can be suppressed.
  • the motor 50C can efficiently radiate the heat generated in the stator 51 including the coil 58 by forming the air flow with the fan 61.
  • the sensor S that detects the rotational position of the rotor 52 is provided, and the overlap section OLD includes the sensor S.
  • the sensor S since the sensor S is arranged so as to overlap the coil end 58a, the size increase in the axial direction of the central axis AX is suppressed.
  • a control circuit C that controls the stator 51 is provided, and the overlap section OLD includes the control circuit C.
  • the control circuit C is arranged so as to overlap the coil end 58a, the size increase in the axial direction of the central axis AX is suppressed.
  • the balance adjusting unit 63 that adjusts the position of the center of gravity of the rotor 52 is provided, and the overlap unit OLE includes the balance adjusting unit 63.
  • the balance adjustment portion 63 is disposed so as to overlap the coil end 58a, and thus the increase in size in the axial direction of the central axis AX is suppressed.
  • the motor 50F which is a distributed winding motor for the lawnmower 100 according to the present embodiment, has a stator 51 having a stator core 57 in which a coil 58 is wound and distributed in a plurality of slots 57b.
  • the coil end 58a that is provided with a rotor 52 that rotates to output a driving force to the cutting blade 13 that is the working portion of the lawn mower 100, and that protrudes in the axial direction of the central axis AX of the rotor 52 from the stator core 57 of the coil 58.
  • the tip portion is bent inward or outward in the radial direction orthogonal to the central axis AX.
  • the tip end portion of the coil end 58a is bent inward or outward in the radial direction orthogonal to the central axis AX, so that the enlargement in the axial direction of the central axis AX is suppressed. Therefore, it is possible to prevent the lawnmower 100 from increasing in size.
  • the lawnmower 100 includes a battery 41, a coil 58 supplied with power from the battery 41, a stator core 57 around which the coil 58 is wound, and a rotor 52 rotatable with respect to the stator core 57. It has a winding motor 50 and a cutting blade 13 driven by a rotor 52.
  • the center axis AX of the rotor 52 is arranged so as to extend in the vertical direction immediately below the battery 41, and the motor is provided on the inner diameter side of the coil 57. It is an arrangement of 50 components.
  • the lawn mower 100 is described as an example of the power tool equipped with the distributed winding motor for the power tool, but the power tool is not limited thereto.
  • the power tool equipped with the distributed winding motor for the power tool may be another type of power tool having a working unit that is operated by the driving force of the motor, such as a chainsaw and a power cutter.
  • the arrangement of the distributed winding motor is also various. For example, in a chainsaw, a distributed winding motor is placed horizontally. In the case of such horizontal placement, upsizing in the left-right direction is suppressed.
  • the distributed winding motor is placed, for example, in front and back.
  • an increase in size in the front and rear direction is suppressed.
  • the housing 53 has been described as an example in which the bearing support portion 53k and the bearing 54 form the overlap portion OP, but the present invention is not limited to this.
  • the housing part 53 may be provided so as to form the overlapping part by itself.

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental Sciences (AREA)
  • Power Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Ecology (AREA)
  • Forests & Forestry (AREA)
  • Harvester Elements (AREA)
  • Portable Power Tools In General (AREA)
  • Permanent Magnet Type Synchronous Machine (AREA)

Abstract

L'invention concerne un moteur à enroulement distribué d'outil électrique qui peut empêcher une augmentation de la taille d'un outil électrique. Ce moteur à enroulement distribué d'outil électrique comprend : un stator ayant un noyau de stator dans lequel des bobines sont réparties dans une pluralité de fentes et enroulées dans celles-ci ; un rotor ayant un arbre qui tourne par rapport au stator et délivre une force d'entraînement pour une partie de travail d'un outil électrique ; et une section de chevauchement qui est disposée séparément de l'arbre et qui est agencée de façon à chevaucher les extrémités de bobine, des bobines, qui font saillie à partir du noyau de stator dans la direction axiale de l'axe central du rotor, dans la direction axiale du rotor.
PCT/JP2019/037125 2018-12-28 2019-09-20 Moteur à enroulement distribué d'outil électrique, outil électrique et tondeuse à gazon Ceased WO2020137039A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2018248060A JP2020108312A (ja) 2018-12-28 2018-12-28 電動工具用の分布巻きモータ、電動工具及び芝刈り機
JP2018-248060 2018-12-28

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WO2020137039A1 true WO2020137039A1 (fr) 2020-07-02

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Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009293907A (ja) * 2008-06-09 2009-12-17 Daikin Ind Ltd 空気調和機及び空気調和機の製造方法
JP2012029370A (ja) * 2010-07-20 2012-02-09 Hitachi Automotive Systems Ltd 回転電機、およびその回転電機を備えた車両
JP2012124976A (ja) * 2010-12-06 2012-06-28 Mitsubishi Electric Corp 永久磁石型電動機及び圧縮機
JP2013128390A (ja) * 2011-11-16 2013-06-27 Nidec Techno Motor Corp モールドモータ
JP2015023680A (ja) * 2013-07-19 2015-02-02 三菱電機株式会社 永久磁石式電動機
WO2015140970A1 (fr) * 2014-03-19 2015-09-24 株式会社安川電機 Machine électrique rotative et procédé de fabrication de machine électrique rotative
WO2016031477A1 (fr) * 2014-08-25 2016-03-03 三菱電機株式会社 Moteur électrique, compresseur, et dispositif à cycle de réfrigération
WO2017212575A1 (fr) * 2016-06-08 2017-12-14 三菱電機株式会社 Moteur à aimants permanents
JP2018088853A (ja) * 2016-11-30 2018-06-14 本田技研工業株式会社 電動作業機

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009293907A (ja) * 2008-06-09 2009-12-17 Daikin Ind Ltd 空気調和機及び空気調和機の製造方法
JP2012029370A (ja) * 2010-07-20 2012-02-09 Hitachi Automotive Systems Ltd 回転電機、およびその回転電機を備えた車両
JP2012124976A (ja) * 2010-12-06 2012-06-28 Mitsubishi Electric Corp 永久磁石型電動機及び圧縮機
JP2013128390A (ja) * 2011-11-16 2013-06-27 Nidec Techno Motor Corp モールドモータ
JP2015023680A (ja) * 2013-07-19 2015-02-02 三菱電機株式会社 永久磁石式電動機
WO2015140970A1 (fr) * 2014-03-19 2015-09-24 株式会社安川電機 Machine électrique rotative et procédé de fabrication de machine électrique rotative
WO2016031477A1 (fr) * 2014-08-25 2016-03-03 三菱電機株式会社 Moteur électrique, compresseur, et dispositif à cycle de réfrigération
WO2017212575A1 (fr) * 2016-06-08 2017-12-14 三菱電機株式会社 Moteur à aimants permanents
JP2018088853A (ja) * 2016-11-30 2018-06-14 本田技研工業株式会社 電動作業機

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