WO2019111430A1 - Moteur électrique et ventilateur électrique - Google Patents

Moteur électrique et ventilateur électrique Download PDF

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Publication number
WO2019111430A1
WO2019111430A1 PCT/JP2018/018177 JP2018018177W WO2019111430A1 WO 2019111430 A1 WO2019111430 A1 WO 2019111430A1 JP 2018018177 W JP2018018177 W JP 2018018177W WO 2019111430 A1 WO2019111430 A1 WO 2019111430A1
Authority
WO
WIPO (PCT)
Prior art keywords
bearing
cylindrical member
outer ring
housing
motor according
Prior art date
Application number
PCT/JP2018/018177
Other languages
English (en)
Japanese (ja)
Inventor
光将 浜崎
昌也 寺本
Original Assignee
三菱電機株式会社
三菱電機ホーム機器株式会社
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, 三菱電機ホーム機器株式会社 filed Critical 三菱電機株式会社
Priority to JP2019557985A priority Critical patent/JP6863477B2/ja
Publication of WO2019111430A1 publication Critical patent/WO2019111430A1/fr

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C25/00—Bearings for exclusively rotary movement adjustable for wear or play
    • F16C25/06—Ball or roller bearings
    • F16C25/08—Ball or roller bearings self-adjusting
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
    • F16C35/04—Rigid support of bearing units; Housings, e.g. caps, covers in the case of ball or roller bearings
    • F16C35/06—Mounting or dismounting of ball or roller bearings; Fixing them onto shaft or in housing
    • F16C35/07—Fixing them on the shaft or housing with interposition of an element
    • F16C35/077—Fixing them on the shaft or housing with interposition of an element between housing and outer race ring
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
    • H02K5/173—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings

Definitions

  • the present invention relates to an electric motor and an electric blower.
  • the present invention has been made to solve such problems.
  • the object is to obtain an electric motor and an electric blower that can use members that are used to fix a bearing that supports a rotary shaft of a rotor without having limitations such as a coefficient of thermal expansion equivalent to that of the bearing. .
  • the electric motor according to the present invention is disposed in the housing and rotatably supports the first bearing and the second bearing rotatably supporting the rotary shaft of the rotor, and the rotary shaft rotatably in the central through hole.
  • a cylindrical member disposed between the first bearing and the second bearing in a passed-through state and fixed to the housing in the housing, the first bearing comprising a first member And a first inner ring fixed to the rotary shaft, the second bearing comprising a second outer ring and a second inner ring fixed to the rotary shaft;
  • the cylindrical member presses the first outer ring along the axial direction parallel to the rotation axis toward the opposite side to the second bearing, and the second outer ring along the axial direction. It presses to the opposite side to said 1st bearing.
  • An electric blower includes the electric motor configured as described above, and a fan fixed to the rotating shaft.
  • the electric motor and the electric blower according to the present invention it is possible to use, as members used for fixing the bearing that supports the rotary shaft of the rotor, one that has no restriction such as a coefficient of thermal expansion equivalent to the bearing Play an effect.
  • Embodiment 1 1 to 5 relate to a first embodiment of the present invention
  • FIG. 1 is a cross-sectional view of an electric blower provided with a motor
  • FIG. 2 is a perspective view of the electric blower
  • FIG. 4 is a perspective view showing a cylindrical member of the motor
  • FIG. 5 is a perspective view showing another example of the cylindrical member of the motor.
  • the electric blower 100 includes a blower unit 200 and a motor unit 300.
  • the blower unit 200 includes a fan 210, a fan cover 220, and the like. The configuration of the blower unit 200 will be described later.
  • the motor unit 300 is a motor. That is, the electric blower 100 according to Embodiment 1 of the present invention includes the electric motor.
  • the motor unit 300 which is a motor, is a brushless DC motor will be described.
  • the motor unit 300 includes a frame 310 and a bracket 320 as shown in FIGS. 1 and 2.
  • the frame 310 is a member that forms the outer shell of the motor unit 300.
  • the main part of the frame 310 has a hollow cylindrical shape.
  • One end of the frame 310 is open.
  • a housing 311 is provided on the other end side of the frame 310.
  • the housing 311 is a cylindrical recess smaller than the main part of the frame 310.
  • a bracket 320 is attached to the aforementioned other end of the frame 310, that is, the side where the housing 311 is provided.
  • the bracket 320 is fixed to the frame 310 by a screw or the like.
  • the motor unit 300 includes a rotor 330 and a stator 340.
  • the rotor 330 is disposed at the center of the inner space of the frame 310.
  • the rotor 330 comprises a rotor core 331.
  • the rotor core 331 is a permanent magnet.
  • a shaft 332 is fixed to the center of the rotor core 331.
  • the shaft 332 is a rotation axis of the rotor 330.
  • the stator 340 is arranged to surround the rotor 330 in the inner space of the frame 310.
  • the stator 340 is configured by winding a coil around a stator core that is an iron core.
  • the stator 340 is for generating a magnetic force acting on the rotor 330.
  • a first bearing 400, a second bearing 500 and a cylindrical member 600 are disposed inside the housing 311.
  • the first bearing 400 and the second bearing 500 are for rotatably supporting a shaft 332 which is a rotation shaft of the rotor 330.
  • the portion of the shaft 332 opposite to the rotor core 331 is passed through the first bearing 400, the second bearing 500 and the cylindrical member 600.
  • the shaft 332 of the rotor 330 is rotatably supported relative to the frame 310 by the housing 311, the first bearing 400, the second bearing 500 and the cylindrical member 600. Details of the support structure of the shaft 332 will be described later.
  • a portion of the shaft 332 opposite to the rotor core 331 penetrates the first bearing 400, the second bearing 500 and the cylindrical member 600.
  • the fan 210 of the blower unit 200 is attached to a portion of the shaft 332 penetrating the first bearing 400, the second bearing 500 and the cylindrical member 600 on the opposite side to the rotor core 331.
  • a fan cover 220 is attached to the bracket 320 so as to surround the fan 210.
  • a suction port 221 is formed in a portion of the fan cover 220 facing the center of the fan 210.
  • a guide blade 230 is attached along the outer periphery of the fan 210. The guide vanes 230 are for introducing the air drawn from the suction port 221 by the rotation of the fan 210 into the motor unit 300.
  • the housing 311 is a cylindrical recess as described above.
  • the rotor core 331 side of the recess of the housing 311 is open so as to communicate with the internal space of the frame 310.
  • the fan 210 side of the recess of the housing 311 is a housing bottom 312.
  • the first bearing 400 includes a first outer ring 410, a first inner ring 420, and a first rolling element 430.
  • the first bearing 400 has an annular shape.
  • the first outer ring 410 is an annular member having a diameter larger than that of the first inner ring 420.
  • the first inner ring 420 is an annular member smaller in diameter than the first outer ring 410.
  • An annular space is formed between the first outer ring 410 and the first inner ring 420.
  • a plurality of first rolling elements 430 are disposed in a space between the first outer ring 410 and the first inner ring 420.
  • Each first rolling element 430 has, for example, a spherical shape.
  • Each first rolling element 430 is partially in contact with a recess provided on the inner peripheral surface of the first outer ring 410 and a recess provided on the outer peripheral surface of the first inner ring 420.
  • the first rolling element 430 rotates, the first inner ring 420 smoothly with respect to the first outer ring 410 while maintaining the relative positional relationship between the first outer ring 410 and the first inner ring 420. It can rotate.
  • a shaft 332 is passed through the inside of the first inner ring 420.
  • the first inner ring 420 is fixed at a predetermined position of the shaft 332, for example, by press fitting.
  • the first outer ring 410 is not fixed to the housing 311. Therefore, the first outer ring 410 is movable relative to the housing 311 as it is.
  • the configuration of the second bearing 500 is similar to that of the first bearing 400. That is, the second bearing 500 includes a second outer ring 510, a second inner ring 520, and a second rolling element 530.
  • the second bearing 500 has an annular shape.
  • the second outer ring 510 is an annular member having a larger diameter than the second inner ring 520.
  • the second inner ring 520 is an annular member smaller in diameter than the second outer ring 510.
  • An annular space is formed between the second outer ring 510 and the second inner ring 520.
  • a plurality of second rolling elements 530 are disposed in a space between the second outer ring 510 and the second inner ring 520.
  • Each second rolling element 530 has, for example, a spherical shape.
  • Each second rolling element 530 is in contact with the inner circumferential surface of the second outer ring 510 and the outer circumferential surface of the second inner ring 520.
  • the second rolling element 530 rotates, the second inner ring 520 smoothly with respect to the second outer ring 510 while maintaining the relative positional relationship between the second outer ring 510 and the second inner ring 520. It can rotate.
  • a shaft 332 is passed through the inside of the second inner ring 520.
  • the second inner ring 520 is fixed at a predetermined position of the shaft 332, for example, by press fitting.
  • the second outer ring 510 is not fixed to the housing 311. Therefore, the second outer ring 510 is movable relative to the housing 311 as it is.
  • the fixed position of the first bearing 400 relative to the shaft 332 and the fixed position of the second bearing 500 are both predetermined. Therefore, the first bearing 400 and the second bearing 500 are fixed to the shaft 332 at predetermined intervals.
  • a cylindrical member 600 is disposed between the first bearing 400 and the second bearing 500.
  • the cylindrical member 600 is a cylindrical member in which a through hole 610 is formed in the central portion.
  • the shaft 332 passes through the through hole 610 of the cylindrical member 600.
  • the inner diameter of the through hole 610 is larger than the outer diameter of the shaft 332.
  • the shaft 332 can freely rotate. That is, the cylindrical member 600 is disposed between the first bearing 400 and the second bearing 500 in a state in which the shaft 332 is rotatably passed in the through hole 610 formed in the center.
  • the cylindrical member 600 is fixed to the housing 311 in the housing 311.
  • the cylindrical member 600 is fixed to the housing 311 by adhesion or press fitting, for example.
  • the dimension of the cylindrical member 600 along the direction parallel to the shaft 332 (hereinafter also referred to as “axial direction”) is longer than the distance between the first bearing 400 and the second bearing 500 fixed to the shaft 332. . Therefore, the cylindrical member 600 presses the first outer ring 410 in the direction opposite to the second bearing 500 in the axial direction. At the same time, the cylindrical member 600 presses the second outer ring 510 in the axial direction toward the opposite side to the first bearing 400.
  • the outer diameter of the cylindrical member 600 is smaller than the outer diameter of the first bearing 400 and the second bearing 500.
  • the outer diameter of the first bearing 400 is the outer diameter of the first outer ring 410.
  • the outer diameter of the second bearing 500 is the outer diameter of the second outer ring 510. Therefore, the first bearing 400 and the second bearing 500 are not directly fixed to the housing 311.
  • the first outer ring 410 and the second outer ring between the first bearing 400 and the second bearing 500 are provided by holding the cylindrical member 600 between the first bearing 400 and the second bearing 500 by providing the cylindrical member 600 for pressing the outer ring 510 of the first bearing 400.
  • the cylindrical member 600 is fixed to the bearing 500 of FIG.
  • the first bearing 400 and the second bearing 500 are fixed to the housing 311 by fixing the cylindrical member 600 to the housing 311. In other words, the first bearing 400 and the second bearing 500 are indirectly fixed to the housing 311 via the cylindrical member 600. And, by fixing the first bearing 400 and the second bearing 500 in such a structure, the first outer ring 410 and the second outer ring 510 do not receive a load perpendicular to the axial direction from the housing 311. .
  • the first bearing 400 and the second bearing 500 are fixed in the housing 311 without fixing the first bearing 400 and the second bearing 500 to the housing 311 in the radial direction perpendicular to the axial direction of the shaft 332. it can.
  • the cylindrical member 600 which is a member used for fixing the bearing that supports the shaft 332 of the rotor without any restriction of the thermal expansion coefficient equivalent to that of the bearing.
  • the demand for weight reduction can be met.
  • the rotation of the first bearing 400 and the second bearing 500 can be stabilized by pressing the first outer ring 410 and the second outer ring 510 along the axial direction. That is, when the electric blower 100 is driven, this is interposed between the first outer ring 410, the first inner ring 420, the first outer ring 410, and the first inner ring 420 of the first bearing 400. It is possible to keep the position of the rolling element 430 appropriately and to allow the first inner ring 420 to smoothly rotate via the first rolling element 430 with respect to the first outer ring 410. The same applies to the second bearing 500.
  • the inner diameter of the cylindrical member 600 is larger than the outer diameter of the shaft 332.
  • the difference between the inner diameter of the cylindrical member 600 and the outer diameter of the shaft 332 is larger than the difference between the outer diameter of the cylindrical member 600 and the outer diameters of the first bearing 400 and the second bearing 500. It is good to do. By doing so, even if the central axis of the cylindrical member 600 and the central axis of the shaft 332 are temporarily shifted in the housing 311 at the time of assembly or the like, the first bearing 400 and the second bearing By abutting, the cylindrical member 600 and the shaft 332 do not come in contact with each other. Therefore, it can be suppressed that the cylindrical member 600 interferes with the smooth rotation of the shaft 332.
  • the second bearing 500 is disposed closer to the rotor core 331 of the rotor 330 than the first bearing 400.
  • the surface of the first outer ring 410 opposite to the cylindrical member 600 is pressed against the housing bottom 312 of the housing 311. By doing so, alignment when attaching the rotor assembly (shaft 332, rotor core 331, first bearing 400, second bearing 500 and cylindrical member 600) to the frame 310 is facilitated.
  • the cylindrical member 600 may be crimped from the outside of the housing 311 and may be fixed in the housing 311. In this case, as shown in FIG. 5, a recess 620 is formed on the outer side surface of the cylindrical member 600. Then, the cylindrical member 600 is crimped at the position of the recess 620. By doing this, the crimped portion of the housing 311 protrudes into the recess 620 and the cylindrical member 600 is fixed. Therefore, the deformation of the cylindrical member 600 due to caulking can be suppressed. At this time, the recess 620 may be disposed at the above-mentioned axial center of the cylindrical member.
  • the caulking position may be made to be axially symmetrical with respect to the shaft 332.
  • the cylindrical member 600 may be made of a material different from that of the housing 311, but desirably has a thermal expansion coefficient equivalent to that of the housing 311. By doing this, it is possible to suppress the occurrence of looseness in fixation of the cylindrical member 600 due to thermal expansion of the cylindrical member 600 and the housing 311.
  • Second Embodiment 6 and 7 relate to a second embodiment of the present invention
  • FIG. 6 is an enlarged sectional view showing an essential part of the motor
  • FIG. 7 is a perspective view showing a cylindrical member of the motor.
  • convex portions are formed on both side surfaces of the cylindrical member on the first bearing side and the second bearing side, and these convex portions are formed. Are in contact with the first outer ring and the second outer ring, respectively.
  • the electric motor and the electric blower according to the second embodiment will be described focusing on differences from the first embodiment by taking as an example a case based on the configuration of the first embodiment.
  • a convex portion 630 is formed on the cylindrical member 600.
  • the protrusions 630 are respectively formed on the surfaces corresponding to the two cylindrical bottom surfaces of the cylindrical member 600.
  • the convex portion 630 is disposed near the outer periphery of these surfaces. Therefore, the inner peripheral side closer to the through hole 610 of these surfaces is recessed relative to the convex portion 630. Further, a recess 620 is continuously formed on the entire outer surface of the cylindrical member 600 over the entire circumference.
  • a caulking portion 313 is formed in the housing 311.
  • the caulking portion 313 is disposed at a position aligned with the recess 620 of the cylindrical member 600 in the housing 311.
  • the housing 311 is deformed so as to project inward from the outside of the housing 311 at the caulking portion 313.
  • the protrusion of the inner wall of the housing 311 at the caulking portion 313 is disposed in the recess 620 of the cylindrical member 600. Then, the cylindrical member 600 is fixed in the housing 311 by the caulking portion 313 and the concave portion 620.
  • the other configuration is the same as that of the first embodiment, and the description thereof is omitted here.
  • the same effects as in the first embodiment can be obtained. Furthermore, by providing the convex portion 630 in the cylindrical member 600, only the first outer ring 410 and the second outer ring 510 can be more reliably pressed by the cylindrical member 600. Therefore, the possibility of interference of the cylindrical member 600 with the rotation of the first inner ring 420 and the second inner ring 520 can be reduced, and the rotor 330 can be rotated smoothly.
  • FIG. 8 is a sectional view showing an essential part of a motor in an enlarged manner, according to Embodiment 3 of the present invention.
  • an elastic member is provided between the second outer ring and the cylindrical member in the configuration of the first embodiment or the second embodiment described above.
  • the motor and the electric blower according to the third embodiment will be described focusing on differences from the second embodiment, taking the case of the configuration of the second embodiment as an example.
  • a spring 710 is provided between the cylindrical member 600 and the second bearing 500.
  • the convex portion is not formed on the surface of the cylindrical member 600 on the second bearing 500 side.
  • the spring 710 is a push spring having an annular shape.
  • the spring 710 is specifically, for example, a spring washer.
  • the spring 710 is inserted between the cylindrical member 600 and the second bearing 500 in an elastically deformed state. Therefore, the spring 710 presses the second outer ring 510 in the axial direction to the opposite side to the first bearing 400. In other words, the cylindrical member 600 presses the second outer ring 510 in the axial direction opposite to the first bearing 400 via the spring 710.
  • the spring 710 may be another elastic body, specifically, for example, rubber or the like.
  • a convex portion 630 is formed on the surface of the cylindrical member 600 on the first bearing 400 side.
  • the cylindrical member 600 presses the first outer ring 410 in the axial direction to the side opposite to the second bearing 500 by the convex portion 630.
  • the other configuration is the same as that of the second embodiment, and the description thereof is omitted here.
  • the same effects as in the first embodiment or the second embodiment can be obtained.
  • the force by which the cylindrical member 600 presses the second outer ring 510 can be stabilized by the spring 710 as an elastic member.
  • the vibration by rotation of the rotor 330 transmitted from the 2nd bearing 500 to the housing 311 can be suppressed, and the vibration of the outer case of a motor can be reduced.
  • the spring 710 which is an elastic member is provided between the second outer ring 510 and the cylindrical member 600 has been described.
  • the location where the elastic member is provided is not limited to this.
  • the elastic member may be provided between the first outer ring 410 and the cylindrical member 600.
  • FIG. 9 is a cross-sectional view showing a main part of a motor in an enlarged manner, according to a fourth embodiment of the present invention.
  • the space between the surface of the first outer ring opposite to the cylindrical member and the bottom of the housing An elastic member is provided.
  • the motor and the electric blower according to the fourth embodiment will be described focusing on differences from the third embodiment by taking as an example the case where the configuration of the third embodiment is based.
  • a rubber 720 is provided between the first bearing 400 and the housing bottom portion 312.
  • the rubber 720 is, for example, silicone rubber having an annular shape.
  • the rubber 720 is inserted between the first bearing 400 and the housing bottom 312 in an elastically deformed state.
  • the rubber 720 may be another elastic body, specifically, for example, a pressing spring or the like.
  • the other configuration is the same as that of the third embodiment, and the description thereof is omitted here.
  • the same effect as any one of Embodiment 1 to Embodiment 3 can be obtained.
  • the vibration by rotation of the rotor 330 transmitted to the housing bottom part 312 from the 1st bearing 400 can be suppressed, and the vibration of the shell part of a motor can be reduced.
  • the frictional force between the rubber 720 and the first bearing 400 can stabilize the position of the first bearing 400.
  • Embodiment 5 10 to 12 relate to Embodiment 5 of the present invention
  • FIG. 10 is an enlarged sectional view showing an essential part of the motor
  • FIG. 11 is a perspective view showing a cylindrical member of the motor
  • FIG. It is an exploded perspective view of a rotor assembly with which a motor is provided.
  • the first outer ring and the cylindrical member, and the second outer ring and the cylindrical member in the configuration of any of the first to fourth embodiments described above.
  • Elastic members are provided in both of the spaces.
  • the motor and the electric blower according to the fifth embodiment will be described focusing on differences from the third embodiment by taking as an example the case where the configuration of the third embodiment is based.
  • rubber 720 is provided between cylindrical member 600 and first bearing 400.
  • the rubber 720 is, for example, silicone rubber having an annular shape.
  • a spring 710 is provided between the cylindrical member 600 and the second bearing 500.
  • the spring 710 is a push spring having an annular shape.
  • the spring 710 is specifically, for example, a spring washer.
  • the convex portions 630 are respectively formed on surfaces corresponding to two cylindrical bottom surfaces of the cylindrical member 600.
  • the convex portion 630 is disposed closer to the inner periphery in these planes. Therefore, the outer peripheral side far from the through hole 610 of these surfaces is recessed relative to the convex portion 630.
  • the spring 710 is inserted between the cylindrical member 600 and the second bearing 500 in an elastically deformed state. Therefore, the spring 710 presses the second outer ring 510 in the axial direction to the opposite side to the first bearing 400.
  • the cylindrical member 600 presses the second outer ring 510 in the axial direction opposite to the first bearing 400 via the spring 710.
  • the convex portion 630 is disposed inside the annular shape of the spring 710. For this reason, it can suppress that the position of the spring 710 shifts
  • the spring 710 may be another elastic body, specifically, for example, rubber or the like.
  • the rubber 720 is inserted between the cylindrical member 600 and the first bearing 400 in an elastically deformed state. Therefore, the rubber 720 presses the first outer ring 410 in the direction opposite to the second bearing 500 along the axial direction. In other words, the cylindrical member 600 presses the first outer ring 410 to the side opposite to the second bearing 500 along the axial direction via the rubber 720. At this time, the convex portion 630 is disposed inside the annular shape of the rubber 720. For this reason, it can suppress that the position of rubber
  • the rubber 720 may be another elastic body, specifically, for example, a pressing spring or the like. The other configuration is the same as that of the third embodiment, and the description thereof is omitted here.
  • the same effect as any of the first to fourth embodiments can be obtained.
  • the force by which the cylindrical member 600 presses the second outer ring 510 can be stabilized by the spring 710 which is an elastic member.
  • the force by which the cylindrical member 600 presses the first outer ring 410 can be stabilized by the rubber 720 which is an elastic member.
  • the vibration due to the rotation of the rotor 330 transmitted from the first bearing 400 and the second bearing 500 to the housing 311 can be suppressed, and the vibration of the outer component of the motor can be reduced.
  • the electric blower according to Embodiment 1 to Embodiment 5 described above can be used for an electric device such as a vacuum cleaner or a dryer.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Power Engineering (AREA)
  • Motor Or Generator Frames (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Support Of The Bearing (AREA)
  • Rolling Contact Bearings (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)

Abstract

Cette invention concerne un moteur électrique dans lequel, en tant qu'élément utilisé pour fixer un palier pour supporter l'arbre rotatif d'un rotor, un élément peut être utilisé pour lequel une limitation telle que d'avoir un coefficient de dilatation thermique égal à que celui du palier n'est pas imposée. En conséquence, le moteur électrique selon l'invention comprend : des premier et second paliers (400, 500) disposés à l'intérieur d'un carter (311) et supportant de façon rotative l'arbre (332) d'un rotor (330) ; et un élément cylindrique (600) disposé entre les premier et second paliers tandis que l'arbre est inséré de manière rotative dans celui-ci, et fixé à l'intérieur du carter. Les premier et second paliers sont pourvus d'une première et d'une seconde bague externe (410, 510), respectivement, et d'une première et d'une seconde bague interne (420, 520) fixées à l'arbre, respectivement. L'élément cylindrique pousse la première bague externe vers le côté opposé au second palier le long d'une direction axiale parallèle à l'arbre et pousse la seconde bague externe vers le côté opposé au premier palier le long de la direction axiale.
PCT/JP2018/018177 2017-12-04 2018-05-10 Moteur électrique et ventilateur électrique WO2019111430A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2019557985A JP6863477B2 (ja) 2017-12-04 2018-05-10 電動機及び電動送風機

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JP2017232819 2017-12-04
JP2017-232819 2017-12-04

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WO2019111430A1 true WO2019111430A1 (fr) 2019-06-13

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117595559A (zh) * 2024-01-18 2024-02-23 沈阳电机制造有限公司 一种大型高压三相同步电动机
EP4353975A1 (fr) * 2022-10-13 2024-04-17 LG Electronics Inc. Moteur de ventilateur

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0251714U (fr) * 1988-10-07 1990-04-12
JPH032921U (fr) * 1989-06-01 1991-01-11
JPH0579514A (ja) * 1991-09-20 1993-03-30 Hitachi Ltd 軸受構造ならびにそれを具えたスクリユー流体機械
JPH0847205A (ja) * 1994-07-29 1996-02-16 Nippon Densan Corp スピンドルモータ
JP2000078815A (ja) * 1998-09-01 2000-03-14 Nippon Densan Corp 記録ディスク駆動用スピンドルモータ
US6135641A (en) * 1997-10-30 2000-10-24 Honeywell International Inc. Hybrid duplex bearing assembly having thermal compensation
JP2001099147A (ja) * 1999-09-24 2001-04-10 Internatl Business Mach Corp <Ibm> 軸受機構、スピンドルモータ及びディスク装置
JP2007198425A (ja) * 2006-01-24 2007-08-09 Nsk Ltd 転がり軸受の予圧付与装置、予圧付与方法及び軸受装置
JP2009124900A (ja) * 2007-11-16 2009-06-04 Asmo Co Ltd ブラシレスモータ
JP2010503371A (ja) * 2006-09-08 2010-01-28 ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツング 特にアーマチュア軸受の改良された収容部を備えた、自動車のウインドシールドワイパ駆動装置のための電気モータ
JP2010091066A (ja) * 2008-10-10 2010-04-22 Ntn Corp 軸受装置
JP2014073734A (ja) * 2012-10-03 2014-04-24 Nsk Ltd 車輪支持用転がり軸受ユニット及びその製造方法

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63105452U (fr) * 1986-12-23 1988-07-08
JP7145613B2 (ja) * 2018-01-05 2022-10-03 三菱電機株式会社 回転電機、送風機、および回転電機の製造方法
JP7103103B2 (ja) * 2018-09-18 2022-07-20 株式会社デンソー ファンモータ

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0251714U (fr) * 1988-10-07 1990-04-12
JPH032921U (fr) * 1989-06-01 1991-01-11
JPH0579514A (ja) * 1991-09-20 1993-03-30 Hitachi Ltd 軸受構造ならびにそれを具えたスクリユー流体機械
JPH0847205A (ja) * 1994-07-29 1996-02-16 Nippon Densan Corp スピンドルモータ
US6135641A (en) * 1997-10-30 2000-10-24 Honeywell International Inc. Hybrid duplex bearing assembly having thermal compensation
JP2000078815A (ja) * 1998-09-01 2000-03-14 Nippon Densan Corp 記録ディスク駆動用スピンドルモータ
JP2001099147A (ja) * 1999-09-24 2001-04-10 Internatl Business Mach Corp <Ibm> 軸受機構、スピンドルモータ及びディスク装置
JP2007198425A (ja) * 2006-01-24 2007-08-09 Nsk Ltd 転がり軸受の予圧付与装置、予圧付与方法及び軸受装置
JP2010503371A (ja) * 2006-09-08 2010-01-28 ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツング 特にアーマチュア軸受の改良された収容部を備えた、自動車のウインドシールドワイパ駆動装置のための電気モータ
JP2009124900A (ja) * 2007-11-16 2009-06-04 Asmo Co Ltd ブラシレスモータ
JP2010091066A (ja) * 2008-10-10 2010-04-22 Ntn Corp 軸受装置
JP2014073734A (ja) * 2012-10-03 2014-04-24 Nsk Ltd 車輪支持用転がり軸受ユニット及びその製造方法

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4353975A1 (fr) * 2022-10-13 2024-04-17 LG Electronics Inc. Moteur de ventilateur
CN117595559A (zh) * 2024-01-18 2024-02-23 沈阳电机制造有限公司 一种大型高压三相同步电动机
CN117595559B (zh) * 2024-01-18 2024-03-29 沈阳电机制造有限公司 一种大型高压三相同步电动机

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