WO2005029684A1 - Moteur sans roulement - Google Patents

Moteur sans roulement Download PDF

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Publication number
WO2005029684A1
WO2005029684A1 PCT/CN2003/000804 CN0300804W WO2005029684A1 WO 2005029684 A1 WO2005029684 A1 WO 2005029684A1 CN 0300804 W CN0300804 W CN 0300804W WO 2005029684 A1 WO2005029684 A1 WO 2005029684A1
Authority
WO
WIPO (PCT)
Prior art keywords
magnetic
magnetic structure
shape
motor according
bearingless motor
Prior art date
Application number
PCT/CN2003/000804
Other languages
English (en)
Chinese (zh)
Inventor
Leelong Chen
Shihming Huang
Sean Chang
Wenshi Huang
Original Assignee
Delta Electronics,Inc.
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 Delta Electronics,Inc. filed Critical Delta Electronics,Inc.
Priority to GB0523430A priority Critical patent/GB2417616B/en
Priority to AU2003272842A priority patent/AU2003272842A1/en
Priority to CNB038264862A priority patent/CN100472916C/zh
Priority to DE10394240.8T priority patent/DE10394240B4/de
Priority to JP2005508967A priority patent/JP2007507193A/ja
Priority to PCT/CN2003/000804 priority patent/WO2005029684A1/fr
Publication of WO2005029684A1 publication Critical patent/WO2005029684A1/fr

Links

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
    • F16C17/00—Sliding-contact bearings for exclusively rotary movement
    • F16C17/04—Sliding-contact bearings for exclusively rotary movement for axial load only
    • F16C17/08—Sliding-contact bearings for exclusively rotary movement for axial load only for supporting the end face of a shaft or other member, e.g. footstep bearings
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/08—Structural association with bearings
    • 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
    • F16C39/00—Relieving load on bearings
    • F16C39/06—Relieving load on bearings using magnetic means
    • F16C39/063—Permanent magnets
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/08—Structural association with bearings
    • H02K7/083—Structural association with bearings radially supporting the rotary shaft at both ends of the rotor
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/08—Structural association with bearings
    • H02K7/09—Structural association with bearings with magnetic bearings
    • 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
    • F16C2380/00—Electrical apparatus
    • F16C2380/26—Dynamo-electric machines or combinations therewith, e.g. electro-motors and generators
    • 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
    • H02K21/22—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating around the armatures, e.g. flywheel magnetos
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/14—Structural association with mechanical loads, e.g. with hand-held machine tools or fans

Definitions

  • the present invention relates to a motor, and more particularly to a non-bearing motor with high power, long life, and low noise.
  • bearings are bearings, bearings, oil bearings, dynamic pressure bearings, magnetic bearings, etc.
  • Palin bearings are also called ball bearings, which are composed of an outer ring, an inner ring, and a plurality of metal balls, where each metal ball is located between the inner ring and the outer ring.
  • Oil-containing bearings are also called powder sintered self-lubricating bearings. They are formed by mixing metal powders such as copper powder, iron powder, nickel powder, and lead powder to sinter the bearing shape, and then dipping the lubricant into the bearing pores.
  • metal powders such as copper powder, iron powder, nickel powder, and lead powder
  • the oil bearing is fixed at the center position of the motor stator, and the shaft center of the rotor is placed in the bearing. At this time, an appropriate gap must be maintained between the bearing and the shaft center.
  • lubricating oil will leak out of the bearings to make the rotor rotate with lubrication.
  • These bearings have higher impact resistance than ball bearings, and they are also cheaper.
  • the dynamic pressure bearing is a deformation of the aforementioned oil-containing bearing. It is formed with two-row arrow-shaped grooves on the inner side wall surface, so that when the motor is running, the lubricating oil and air in the bearing are squeezed from the sides of the arrow to the tip of the groove Pressure to form two oil and gas rings to support the axis.
  • the grooves on the inner side of the dynamic pressure bearing can be formed only through an extremely precise machining process, and the clearance between the shaft center and the bearing needs to be accurately grasped.
  • the production cost of the dynamic pressure bearing is much higher than the aforementioned bearings. Furthermore, when the speed of the motor is low, since the oil and gas cannot form an oil and gas ring, the dynamic pressure effect cannot be produced at the time of low rotation, and the effect is the same as that of the oil bearing.
  • Magnetic levitation bearings are formed with multiple N-S magnetic poles on the shaft center, and the same N-S magnetic poles as the shaft center are formed at the relative positions of the bearings.
  • the shaft center is suspended by magnetic repulsion.
  • the bearing Since the shaft center and the bearing are not in contact with each other at this time, there is no problem of friction noise during operation.
  • the distance between the shaft center and the bearing is maintained at 0.2 mm or less under static conditions, so the parts of the bearing around the shaft center to the center of the circle The generated thrusts are equal and offset each other.
  • the shaft center is shifted due to external force or its driving force, its balance will be broken, and the shaft center will easily collide with the bearing during operation. Its noise is increased, its life is shortened, and even smooth operation is not possible.
  • the magnetic bearing described above also suffers from problems such as failure to start smoothly due to its magnetic balance. Therefore, the magnetic bearing is still in the experimental stage and cannot enter the mass production stage smoothly.
  • the present invention proposes a bearingless motor to greatly reduce the amount of motor operation noise. Furthermore, the present invention further proposes a bearingless motor to greatly improve the motor's operating life. Furthermore, the present invention further proposes a bearingless motor to greatly reduce production costs. Therefore, the present invention provides a bearingless motor, which is composed of a fixed structure, a rotor structure, and an upper and a lower magnetic structure.
  • the stator structure is located in the housing, and the rotor structure is also located in the housing and is arranged corresponding to the stator structure.
  • the rotor structure has a shaft center, and the shaft center is an axially extending and protruding rotor structure, and the shaft center does not contact the stator structure or the housing.
  • the lower magnetic structure is located at the bottom of the housing, the upper magnetic structure is located at the top of the housing, and the upper magnetic structure and the lower magnetic structure are located at axially opposite positions, respectively. The upper magnetic structure and the lower magnetic structure are attracted to each other, and the shaft center is fixed between the upper and lower magnetic structures by magnetic attraction.
  • the shaft center is attracted (or contacted) with the upper magnetic structure, attracted (or contacted) with the lower magnetic structure, or attracted (or contacted) with the upper and lower magnetic structures at the same time.
  • the bearingless motor of the present invention may also have at least one wear-resistant structure, which is located between the shaft center and the lower magnetic structure, between the shaft center and the upper magnetic structure, or between the shaft center and the upper and lower magnetic structures. .
  • the contact method is point contact.
  • It further includes a magnetic structure annularly arranged on the rotor structure and a stator magnetically permeable structure annularly arranged on the structure, and the position of the stator magnetically permeable structure corresponds to the magnetic structure on the rotor structure.
  • the magnetic force center plane of the magnetic structure of the rotor structure may be slightly higher than, slightly lower than, or parallel to the magnetic force center plane of the stator magnetic conductive structure in the axial direction.
  • stator structure when the stator structure is covered in the rotor structure, its axis can extend into the opening in the center of the stator structure, and a protective structure can be formed on the side wall of the opening. The structure is not in contact with the axis.
  • the surface shape of the end of the shaft center may be flat, arc-shaped, tapered, concave or convex, and the upper magnetic structure or the lower magnetic structure faces the axial center.
  • the shape of the end surface is flat, arc-shaped, tapered, concave or convex.
  • the shape of the end surface of the shaft center corresponds to the shape of the end surface of the upper magnetic structure or the shape of the end surface of the lower magnetic structure.
  • the surface shape of the end portion of the wear-resistant structure facing the axis may also be planar, arc-shaped, tapered, concavely curved, or convexly curved.
  • the shape of the end face of the shaft center and the end face of the wear-resistant structure correspond to each other.
  • the bearingless motor of the present invention described above may have a plurality of blades around the periphery of the rotor structure. These fans may be centrifugal fans, flat fans or axial fans.
  • the casing may be composed of an upper casing and a lower casing.
  • the joining method of the upper case and the lower case may be fitting, clamping, adhering, locking, or respectively fixing through a buffer structure.
  • the upper case and the lower case are, for example, corresponding hook-and-hook combinations.
  • the present invention further provides a bearingless motor suitable for a fan motor, which is composed of a stator structure, a rotor structure, a plurality of fan blades, and a supporting magnetic structure.
  • the stator structure resides on a base.
  • the stator structure has at least a certain magnetic permeability structure.
  • the stator magnetic permeability structure is ring-shaped on the fixed structure.
  • the rotor structure is located on the base.
  • the rotor structure has a shaft center and at least one magnetic structure.
  • the shaft center is an axially extending and protruding rotor structure.
  • the magnetic structure is ring-shaped on the rotor structure, and the position of the magnetic structure is corresponding to the magnetically permeable structure.
  • the fan blade is around the periphery of the rotor structure, and the supporting magnetic structure is fixed on the base.
  • the supporting magnetic structure fixes the shaft center by magnetic attraction, and the supporting magnetic structure contacts the shaft center in a point contact manner.
  • the magnetic force center plane on the rotor structure is slightly higher in the axial direction than the magnetic force center plane determined on the structure.
  • the bearingless fan motor of the present invention can make the rotor shaft center run without contact by the magnetic attraction of the shaft center and the air buoyancy during fan operation, which can greatly reduce the amount of motor noise and increase the life of the motor. .
  • the bearingless motor of the present invention does not need to use a conventional bearing, the manufacturing and assembly costs of the component can be avoided, and the production cost can be greatly reduced.
  • FIG. 1 is a schematic diagram showing a structure of a bearingless motor according to a first preferred embodiment of the present invention
  • FIG. 2 is a schematic diagram showing a structure of a bearingless motor according to a second preferred embodiment of the present invention
  • 3D is a partial view showing the shaft center and magnetic structure of the bearingless motor of the present invention Intention
  • FIG. 4 is a schematic structural diagram of a bearingless motor according to a third preferred embodiment of the present invention
  • FIG. 5 is a schematic structural diagram of a bearingless motor according to a fourth preferred embodiment of the present invention.
  • FIG. 1 is a schematic structural diagram of a bearingless motor according to a first preferred embodiment of the present invention.
  • the bearingless motor 100 of the present invention is composed of a housing 102, a stator structure 104, a rotor structure 106, and a magnetic structure 108.
  • the magnetic structure 108 and the magnetic structure 110 attract each other, and the magnetic structures 108, 110
  • the shaft center 116 of the rotor structure 106 is a common axis.
  • the rotor structure 106 is fixed between the magnetic structures 108 and 110 only by the magnetic attraction of the magnetic structures 108 and 110 to the shaft center 116 thereof.
  • the housing 102 serves as a protective shell of the bearingless motor 100 to prevent the internal components of the bearingless motor 100 from being damaged by external forces.
  • the casing 102 may be integrally formed, or may be formed by combining the upper casing 102a and the lower casing 102b. It can also be divided into multiple parts and combined.
  • the coupling method of the upper casing 102a and the lower casing 102b is, for example, fitting, clamping, adhering, locking, and respectively fixing through a buffer structure.
  • the upper case 102a and the lower case 102b are, for example, corresponding hook and hook combinations (as shown in FIG. 1).
  • the stator structure 104 is located in the housing 102 and is used to generate an induced current or provide a driving force for a rotor structure 106 described later.
  • the stator structure 104 is composed of a circuit board (not shown), a fixed seat 112, and at least a certain magnetically conductive structure 114.
  • the stator structure 104 and the shaft center 116 described below are not in contact with each other.
  • the stator magnetic conductive structure 114 is ring-shaped on the stator structure 104 and has a magnetic center plane P1.
  • the stator magnetic conductive structure 114 is, for example, a silicon steel sheet or an electromagnet.
  • the rotor structure 106 is located in the housing 102 and is arranged corresponding to the stator structure. 106 is rotatable on the casing 102.
  • the rotor structure 106 is constituted by a shaft center 116, a rotor housing 132, at least one magnetic structure 118, and a magnet guide shell 120.
  • the shaft center 116 is an axially extending protruding rotor structure 106 and serves as a rotation axis when the rotor structure 106 rotates.
  • the surface shape of the end portion of the shaft center 116 is, for example, a flat shape, an arc shape, a pointed shape, a concavely curved surface, or a convexly curved surface.
  • the magnetic structure 118 is ring-shaped on the rotor structure 106 and has a magnetic center plane P2.
  • the position of the magnetic structure 118 corresponds to the stator magnetically conductive structure 114, and the positions of the magnetic center plane P2 and the magnetic center plane P1 are slightly higher in the axial direction, parallel in the axial direction, or slightly lower in the axial direction.
  • the magnetic structure 118 is, for example, a permanent magnet or a plastic magnet.
  • a plurality of fan blades may also be surrounded on the periphery of the rotor structure 106 to generate an air field flow near the bearingless motor 100 when the rotor structure 106 rotates.
  • the fan blade 122 is, for example, a centrifugal fan blade, a flat fan blade, or an axial fan blade.
  • the magnetic structures 108 and 110 are respectively located at the bottom and the top of the housing 102, and the distribution positions of the magnetic structures 108 and 110 are respectively located at axially opposite positions.
  • the magnetic structures 108 and 110 are, for example, permanent magnets, plastic magnets, and electromagnets.
  • the magnetic structures 108 and 110 can be fixed to the housing 102 by, for example, gluing, fitting, clamping, bonding, or the like.
  • the part of the magnetic structure 108 facing the magnetic structure 110 has the opposite magnetic property as the part of the magnetic structure 110 facing the magnetic structure 108.
  • the surface shape of the magnetic structures 108 and 110 facing the axis 116 and the surface shape of the end of the axis 116 are curved surfaces in point contact with each other.
  • the surface shape of the magnetic structure 116 is, for example, planar, arc-shaped, tapered, or concavely curved. Convex surface.
  • the magnetic structures 108 and 110 and the axis 116 are located on the same axis. Because the magnetic structures 108 and 110 and the shaft center 116 are maintained on the same axis together by magnetic attraction, the shaft center 116 is fixed between the magnetic structures 108 and 110. When the bearingless motor 100 is not started, the shaft 116 is only It is in contact with the magnetic structure 108 in a point contact manner, but is not in contact with other components outside the rotor structure 106.
  • the shaft center 116 may be changed to contact the magnetic structure 110 only by point contact, so that the rotor structure 106 is suspended in the housing 102.
  • the shaft center 116 may be changed to contact the magnetic structures 108 and 110 at the same time in a point contact manner, so that the rotor structure 106 is held in the housing 100 by the magnetic structures 108 and 110.
  • a wear-resistant structure 124, 126 may also be formed between the shaft center 116 and the magnetic structures 108, 110, wherein the shaft center 116 only contacts the wear-resistant structures 124, 126. It is fixed between the magnetic structures 108 and 110 by the magnetic attraction of the magnetic structures 108 and 110.
  • the wear-resistant structures 124 and 126 may be formed on the magnetic structures 108 and 110 at the same time, or may be formed only on the portion where the shaft center 116 contacts the magnetic structure (that is, only the wear-resistant structure 124 is formed on the magnetic structure 108 or only A wear-resistant structure 126 is formed on the magnetic structure 110.
  • the abrasion-resistant structures 124 and 126 are formed, for example, by bonding, clamping, fitting, and joining.
  • the wear-resistant structures 124 and 126 may be in contact with the magnetic structures 108 and 110 or may not be in contact with the magnetic structures 108 and 110, and need only be located on the axis formed by the shaft center 116 and the magnetic structures 108 and 110.
  • a protective structure 128 may also be formed on the opening 130 inside the stator fixed base 112, The protection structure 128 and the shaft center 116 are not in contact with each other.
  • the material of the protective structure 128 is, for example, plastic, elastic material, or shock-absorbing material.
  • FIG. 2 is a schematic structural diagram of a bearingless motor 200 according to a second preferred embodiment of the present invention.
  • this preferred embodiment uses only a single magnetic junction
  • the structure 202 attracts the shaft center 116 of the rotor structure 106, and the magnetic center plane P2 of the magnetic structure 118 is higher than the magnetic center plane P1 of the stator magnetic conductive structure 114.
  • the position where the axis 116 and the magnetic structure 202 are in point contact may be slightly higher than, parallel to, and slightly lower than the magnetic force center plane P2.
  • the magnetic structure 202 may be directly formed integrally from a magnetic substance, or may be composed of a wear-resistant structure 206 and a magnetic body 204. Furthermore, the surface where the magnetic structure 202 and the axis 116 are in contact with each other or the surface where the wear-resistant structure 206 and the axis 116 are in contact with each other are curved surfaces in point contact with each other.
  • the surface of the wear-resistant structure 206 or the magnetic structure 202 is, for example, an arc shape, a tapered shape, a concavely curved surface, or a convexly curved surface.
  • the surface of the magnetic structure may be a concave curved surface as shown in FIG. 3A or a concave concave surface as shown in FIG. 3B.
  • the end surface of the axis 116a may be a concave curved surface as shown in FIG. 3C or a concave cone surface as shown in FIG. 3D.
  • FIG. 4 is a schematic structural diagram of a bearingless motor 30o according to a third preferred embodiment of the present invention.
  • a magnetic structure 304 is formed on the top of the stator circumferential fixing seat 112, and a magnetic structure 302 is formed on the rotor housing 132.
  • the magnetic structure 302, 304 is magnetically attracted to each other and does not touch each other.
  • the magnetic structure 304 is not in contact with the stator magnetically conductive structure 114, and the magnetic structure 304 is preferably higher than the stator magnetically conductive structure 114 in the axial direction.
  • the shape of the magnetic structure 304 is, for example, a ring shape, a fan shape, a block shape, or a strip shape, and the shape and position of the magnetic structure 302 correspond to the magnetic structure 302.
  • the manner in which the magnetic structure 304 is combined with the stator fixing base 112 is, for example, movable coupling, fitting, clamping, and joining.
  • the magnetic structure 302 is combined with the rotor case 132 in a manner such as bonding, fitting, Clamping and joining.
  • FIG. 5 is a schematic structural diagram of a bearingless motor 400 according to a fourth preferred embodiment of the present invention.
  • the same components as in the previous embodiments are given the same reference numerals.
  • the difference between this preferred embodiment and the third preferred embodiment is that the preferred embodiment forms a magnetic structure 402 only on the top of the housing 102 (ie, the upper housing 102a), and the magnetic center plane P2 of the magnetic structure 118 It is lower than the magnetic force center plane P1 of the stator magnetic conductive structure 114.
  • a wear-resistant structure 408 may also be formed on the lower casing 102b, where the point where the axis 116 is in point contact with this wear-resistant structure 408 may be slightly above, 'parallel to, and slightly below the magnetic center plane Pl.
  • the magnetic structure 402 may be directly formed integrally from a magnetic substance, or may be composed of a wear-resistant structure 406 and a magnetic body 404.
  • the surface where the magnetic structure 402 and the shaft center 116 contact each other, the wear-resistant structure 406 and the shaft center, or the surface where the wear-resistant structure 408 and the shaft center 116 contact each other are curved surfaces in point contact with each other.
  • the surface of the wear-resistant structure 406, 408 or the magnetic structure 402 is a convex or concave shape corresponding to the axis 116, such as a circular arc shape, a tapered cone shape, a concavely curved surface, a convexly curved surface.
  • bearingless motor of the present invention is described as being applicable to an axial flow fan motor, it is not limited thereto, and can also be applied to a frameless fan motor, a centrifugal fan motor, an outer rotor motor, and an inner rotor.
  • the bearingless fan motor of the present invention can make the rotor shaft center run without contact by the airflow buoyancy of the shaft magnetic attraction force during the fan operation, which can greatly reduce the horse. It can reach the amount of noise and increase the life of the motor.
  • the bearingless motor of the present invention does not need to use a conventional bearing, the manufacturing and assembly costs of the component can be avoided, and the production cost can be greatly reduced.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Motor Or Generator Frames (AREA)
  • Magnetic Bearings And Hydrostatic Bearings (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Permanent Magnet Type Synchronous Machine (AREA)

Abstract

La présente invention concerne un type de moteur sans roulement, qui comprend un stator, un rotor, un structure magnétique supérieure et un structure magnétique inférieure. Le stator et le rotor sont logés dans un boîtier et le rotor est configuré en relation avec le stator. Le rotor est équipé d'un arbre qui s'étend axialement et prolonge le rotor, et ledit arbre n'a pas de contact avec le stator ou le boîtier. La structure magnétique inférieure est située au fond du boîtier, et la structure magnétique supérieure est située au sommet du boîtier. Les positions de la structure magnétique supérieure et de la structure magnétique inférieure sont axielement opposées. Dans le boîtier, la structure magnétique supérieure et la structure magnétique inférieure s'attirent mutuellement, et l'arbre est fixé entre la structure magnétique supérieure et la structure magnétique inférieure par attraction.
PCT/CN2003/000804 2003-09-22 2003-09-22 Moteur sans roulement WO2005029684A1 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
GB0523430A GB2417616B (en) 2003-09-22 2003-09-22 A motor without bearing
AU2003272842A AU2003272842A1 (en) 2003-09-22 2003-09-22 A motor without bearing
CNB038264862A CN100472916C (zh) 2003-09-22 2003-09-22 无轴承马达
DE10394240.8T DE10394240B4 (de) 2003-09-22 2003-09-22 Elektromotor
JP2005508967A JP2007507193A (ja) 2003-09-22 2003-09-22 モーター
PCT/CN2003/000804 WO2005029684A1 (fr) 2003-09-22 2003-09-22 Moteur sans roulement

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2003/000804 WO2005029684A1 (fr) 2003-09-22 2003-09-22 Moteur sans roulement

Publications (1)

Publication Number Publication Date
WO2005029684A1 true WO2005029684A1 (fr) 2005-03-31

Family

ID=34318857

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2003/000804 WO2005029684A1 (fr) 2003-09-22 2003-09-22 Moteur sans roulement

Country Status (6)

Country Link
JP (1) JP2007507193A (fr)
CN (1) CN100472916C (fr)
AU (1) AU2003272842A1 (fr)
DE (1) DE10394240B4 (fr)
GB (1) GB2417616B (fr)
WO (1) WO2005029684A1 (fr)

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US7478574B2 (en) * 2005-04-26 2009-01-20 Igarashi Electric Works, Ltd. Electric actuator
CN108204873A (zh) * 2016-12-20 2018-06-26 陈恰 磁俘无感式转矩传感器

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EP2354557B1 (fr) * 2010-01-22 2013-09-18 Micronel AG Dispositif doté d'un stator et d'un rotor installé dans celui-ci
DE102010051262A1 (de) * 2010-11-12 2012-05-31 Secop Gmbh Kältemittelverdichter
CN103618422B (zh) * 2013-12-23 2016-08-17 中国航天空气动力技术研究院 电磁驱动风扇装置
TWI669888B (zh) 2018-04-26 2019-08-21 宏碁股份有限公司 風扇及用於風扇之平衡環
CN110552915A (zh) * 2018-06-01 2019-12-10 宏碁股份有限公司 风扇及用于风扇的平衡环
TWI761937B (zh) 2020-09-02 2022-04-21 利愛電氣股份有限公司 具有外轉子結構的發電機

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CN100472916C (zh) 2009-03-25
DE10394240B4 (de) 2014-07-31
GB2417616A (en) 2006-03-01
GB0523430D0 (en) 2005-12-28
DE10394240T5 (de) 2010-04-29
JP2007507193A (ja) 2007-03-22
AU2003272842A1 (en) 2005-04-11
GB2417616B (en) 2008-01-02
CN1771651A (zh) 2006-05-10

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