WO2022191572A1 - 모터 - Google Patents
모터 Download PDFInfo
- Publication number
- WO2022191572A1 WO2022191572A1 PCT/KR2022/003254 KR2022003254W WO2022191572A1 WO 2022191572 A1 WO2022191572 A1 WO 2022191572A1 KR 2022003254 W KR2022003254 W KR 2022003254W WO 2022191572 A1 WO2022191572 A1 WO 2022191572A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- disposed
- shaft
- rotor
- metal part
- motor
- Prior art date
Links
- 239000002184 metal Substances 0.000 claims abstract description 41
- 238000000034 method Methods 0.000 claims description 9
- 125000006850 spacer group Chemical group 0.000 claims description 5
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 230000008878 coupling Effects 0.000 description 12
- 238000010168 coupling process Methods 0.000 description 12
- 238000005859 coupling reaction Methods 0.000 description 12
- 238000004519 manufacturing process Methods 0.000 description 9
- 230000003993 interaction Effects 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000696 magnetic material Substances 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
Images
Classifications
-
- 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
- H02K7/003—Couplings; Details of shafts
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2706—Inner rotors
- H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
- H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
- H02K1/2753—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets the rotor consisting of magnets or groups of magnets arranged with alternating polarity
- H02K1/278—Surface mounted magnets; Inset magnets
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/28—Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
- H02K11/20—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching
- H02K11/21—Devices for sensing speed or position, or actuated thereby
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
- H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information
Definitions
- This embodiment relates to a motor.
- the motor generates power while rotating by an interaction between a rotor having a plurality of magnets and electromagnetic force generated by a coil wound around the stator.
- the motor is provided with a rotatably formed shaft, a rotor coupled to the shaft, and a stator fixed to the inside of the housing, and the stator is installed with a gap along the circumference of the rotor.
- a coil forming a rotating magnetic field is wound around the stator to induce electrical interaction with the rotor to induce rotation of the rotor. Therefore, when the rotor rotates, the shaft rotates.
- the motor includes a sensor for detecting the rotational position of the rotor and the shaft.
- the sensor may include a metal part disposed on the rotor or shaft, and a sensing part for sensing the metal part.
- the metal part can rotate with the rotor or shaft.
- An object of the present embodiment is to provide a motor capable of improving the structure, improving production efficiency, and lowering the manufacturing cost according to a reduction in the number of parts.
- the motor according to the present embodiment includes a housing; a stator disposed in the housing; a rotor disposed inside the stator; a shaft disposed in the center of the rotor; and a metal part disposed at one end of the shaft, wherein the shaft and the metal part are formed as one body.
- a sensor unit disposed outside the rotor may be included, and the sensor unit and the metal unit may be a motor position sensor (MPS) sensor.
- MPS motor position sensor
- the metal part may include a plurality of wings disposed radially from one end of the shaft, and the plurality of wings may be spaced apart from each other.
- Each of the plurality of wings a first side; a second side opposite the first side; and an outer peripheral surface connecting the first side and the second side.
- the wing portion may have a shape in which a circumferential distance between the first side and the second side increases toward the outside.
- the outer circumferential curvature of the wing portion may correspond to the outer circumferential curvature of the shaft.
- a spacer may be disposed between adjacent wing portions, and a circumferential length of the spacer may be shorter than a circumferential length of the wing portion.
- the metal part may be bent outwardly from one end of the rotation shaft, and the metal part and the rotation shaft may be perpendicular to each other.
- the rotor may include a rotor core having a magnet disposed on an outer circumferential surface thereof; and a cover coupled to outer surfaces of the rotor core and the magnet.
- a motor includes a housing; a stator disposed in the housing; a rotor disposed inside the stator; a shaft disposed in the center of the rotor; and a sensor for detecting a position of the shaft or the rotor, wherein the sensor includes: a metal part bent from one end of the shaft; and a sensor unit disposed outside the rotor and sensing the inductance of the metal part.
- FIG. 1 is a conceptual diagram of a rotor assembly according to an embodiment of the present invention.
- FIG. 2 is a perspective view of a rotor assembly according to an embodiment of the present invention.
- Figure 3 is an exploded perspective view of a shaft and a bearing coupling portion according to an embodiment of the present invention.
- FIG. 4 is an exploded perspective view of a motor according to an embodiment of the present invention.
- the terms used in the embodiments of the present invention are for describing the embodiments and are not intended to limit the present invention.
- the singular form may also include the plural form unless otherwise specified in the phrase, and when it is described as "At least one (or one or more) of A and (and) B, C", it is combined as A, B, C It may contain one or more of all possible combinations.
- a component is described as 'connected', 'coupled' or 'connected' to another component, the component is not only directly connected, coupled or connected to the other component, but also the component It may also include cases where it is 'connected', 'coupled' or 'connected' due to another element between the and another element.
- top (above) or below (below) is not only when two components are in direct contact with each other, but also Also includes cases in which one or more other components are formed or disposed between two components.
- up (up) or down (down) it may include the meaning of not only the upward direction but also the downward direction based on one component.
- FIG. 1 is a conceptual diagram of a rotor assembly according to an embodiment of the present invention
- FIG. 2 is a perspective view of a rotor assembly according to an embodiment of the present invention
- FIG. 3 is an exploded perspective view of a shaft and a bearing coupling part according to an embodiment of the present invention
- Figure 4 is an exploded perspective view of a motor according to an embodiment of the present invention.
- the motor may include a housing (not shown), a stator (not shown) disposed in the housing, and a rotor assembly 100 disposed in the stator. .
- the housing may form an outer shape of the motor, and may form a space in which the stator and the rotor assembly 100 are disposed.
- a printed circuit board (not shown) on which an element for driving the motor is disposed may be disposed in the housing.
- the stator is disposed inside the housing and may include a coil.
- a space may be formed in the center of the stator so that the rotor assembly 100 is disposed.
- the rotor assembly 100 may be disposed inside the stator.
- the rotor assembly 100 may rotate inside the stator.
- the rotor assembly 100 may include a magnet 130 . Accordingly, the rotor assembly 100 may rotate due to electromagnetic interaction between the magnet 130 and the coil of the stator.
- the rotor assembly 100 may include a rotor 110 , a magnet 130 , a shaft 150 , a metal part 170 , and a bearing coupling part 190 .
- the rotor 110 may include a rotor core 112 and a cover 116 .
- the rotor 110 is disposed inside the stator and can rotate.
- the rotor core 112 may form a body of the rotor 110 .
- the rotor core 112 has a circular cross section, and an opening passing through the lower surface from the upper surface may be formed in the center.
- the shaft 150 may be coupled to the opening.
- the magnet 130 may be coupled to an outer circumferential surface of the rotor core 112 .
- a magnet coupling part 114 may be disposed on the outer circumferential surface of the rotor core 112 so that the magnet 130 is coupled thereto.
- the magnet coupling part 114 may have a groove shape that is recessed inward compared to other regions on the outer circumferential surface of the rotor core 112 .
- the magnet coupling part 114 may be provided in plurality, and may be disposed to be spaced apart from each other along the circumferential direction of the rotor core 112 .
- a partition having a shape protruding outward compared to other regions may be disposed between the adjacent magnet coupling parts 114 . At least a portion of the magnet 130 is accommodated in the magnet coupling part 114 , and both sides thereof may be in contact with the inner surface of the partition part.
- the magnet 130 may be disposed on the outer surface of the rotor core 112 .
- the magnet 130 may be provided in plurality and may be disposed along the circumferential direction of the rotor core 112 .
- the magnet 130 may be coupled to the rotor core 112 through a separate adhesive.
- the rotor 110 and the shaft 150 may rotate by electromagnetic interaction between the magnet 130 and the coil.
- the cover 116 may be disposed outside the rotor core 112 .
- the cover 116 may be coupled to cover an outer circumferential surface of the rotor core 112 .
- the cover 116 may cover the outer surface of the magnet 130 . That is, the magnet 130 may be interposed between the cover 116 and the rotor core 112 . Upper and lower surfaces of the magnet 130 may be exposed to the outside.
- the cover 116 and the magnet 130 , and the cover 116 and the rotor core 112 may be coupled to each other by an adhesive.
- the shaft 150 may be disposed at the center of the rotor 110 .
- the shaft 150 may be press-fitted into the central opening of the rotor core 112 to be coupled. Accordingly, the shaft 150 may rotate together with the rotor 110 .
- Upper and lower ends of the shaft 150 may protrude upward and downward of the rotor 110 , respectively.
- the material of the shaft 150 may be a non-magnetic material.
- a bearing coupling part 190 may be disposed at a lower end of the shaft 150 .
- the bearing coupling part 190 may include a protrusion 192 protruding downward from other regions.
- the protrusion 192 may have a smaller cross-sectional area than other regions.
- the protrusion 192 is disposed inside a bearing (not shown), and rotation of the shaft 150 may be supported through the bearing.
- the outer surface of the protrusion 192 may be in contact with the inner surface of the bearing inner ring.
- an upper portion of the bearing coupling part 190 may be press-fitted into the shaft 150 .
- the motor according to the present embodiment may include a sensor.
- the sensor is for detecting the rotation of the rotor assembly 100 , and may include a metal part 170 disposed at one end of the shaft 150 and a sensor part detecting the metal part 170 .
- the rotor assembly 100 may include a metal part 170 .
- the metal part 170 may be disposed at one end of the shaft 150 .
- the metal part 170 may be disposed on the upper end of the shaft 150 .
- the metal part 170 may be a motor position sensor (MPS) sensor for non-contact sensing of a magnetic signal of the metal part 170 together with a sensor part to be described later.
- the metal part 170 is formed of a non-magnetic material, and may be integrally formed with the shaft 150 . In other words, the metal part 170 may be formed integrally with the shaft 150 .
- the shaft 150 and the metal part 170 may be made of a metal material.
- the metal part 170 may have a shape bent outward from the upper end of the shaft 150 .
- the metal part 170 may be disposed perpendicular to the shaft 150 .
- the metal part 170 may include a plurality of wing parts.
- the plurality of wings may be radially disposed from the upper end of the shaft 150 .
- the plurality of wings may be disposed to be spaced apart from each other along the circumferential direction of the shaft 150 .
- the number of the plurality of wings may be five.
- a spacer 178 spaced apart from each other may be disposed between the plurality of wings. Based on the circumferential direction, the length of the spacing portion 178 may be shorter than the length of the wing portion.
- Each of the plurality of wings may include a first side 172 , a second side 174 , and an outer circumferential surface 176 .
- the first side 172 and the second side 174 may be disposed to face each other.
- the outer circumferential surface 176 may connect the first side surface 172 and the second side surface 174 .
- the wing portion may have a shape in which the circumferential distance between the first side 172 and the second side 174 increases toward the outside.
- the curvature of the outer circumferential surface 176 may correspond to the curvature of the outer circumferential surface of the shaft 150 .
- the sensor unit may be disposed on the outside of the rotor assembly 100 and detect a change in the position of the metal unit 170 .
- the sensor unit may sense an inductance that changes according to a change in the position of the metal part 170 to detect the positions of the metal part 170 and the rotor assembly 100 .
- the sensor unit may include a coil or a chip disposed on a printed circuit board (not shown) disposed outside the rotor assembly 100 .
- the sensor unit may be mounted on the printed circuit board.
- the structure as described above due to the integrated structure between the metal part and the shaft, the number of parts and the manufacturing process are reduced, so that the manufacturing cost can be lowered and the production efficiency can be improved.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Reciprocating, Oscillating Or Vibrating Motors (AREA)
Abstract
Description
Claims (10)
- 하우징;상기 하우징 내 배치되는 스테이터;상기 스테이터의 내측에 배치되는 로터;상기 로터의 중앙에 배치되는 샤프트; 및상기 샤프트의 일단에 배치되는 금속부를 포함하고,상기 샤프트와 상기 금속부는 한몸으로 형성되는 모터.
- 제 1 항에 있어서,상기 로터의 외측에 배치되는 센서부를 포함하고,상기 센서부 및 상기 금속부는 MPS(Motor Position Sensor) 센서인 모터.
- 제 1 항에 있어서,상기 금속부는 상기 샤프트의 일단에서 방사상으로 배치되는 다수의 날개부를 포함하고,상기 다수의 날개부는 상호 이격되는 모터.
- 제 3 항에 있어서,상기 다수의 날개부 각각은,제1측면;상기 제1측면과 대향하는 제2측면; 및상기 제1측면과 상기 제2측면을 연결하는 외주면을 포함하는 모터.
- 제 4 항에 있어서,상기 날개부는 외측으로 갈수록 상기 제1측면과 상기 제2측면 사이의 원주 방향 거리가 멀어지는 형상인 모터.
- 제 4 항에 있어서,상기 날개부의 외주면 곡률은 상기 샤프트의 외주면 곡률에 대응되는 모터.
- 제 3 항에 있어서,인접한 날개부 사이에는 이격부가 배치되고,상기 이격부의 원주 방향 길이는 상기 날개부의 원주 방향 길이 보다 짧은 모터.
- 제 1 항에 있어서,상기 금속부는 상기 회전축의 일단으로부터 외측으로 절곡되며,상기 금속부와 상기 회전축은 상호 수직한 모터.
- 제 1 항에 있어서,상기 로터는,외주면에 마그네트가 배치되는 로터 코어; 및상기 로터 코어 및 상기 마그네트의 외면에 결합되는 커버를 포함하는 모터.
- 하우징;상기 하우징 내 배치되는 스테이터;상기 스테이터의 내측에 배치되는 로터;상기 로터의 중앙에 배치되는 샤프트; 및상기 샤프트 또는 상기 로터의 위치를 감지하는 센서를 포함하고,상기 센서는,상기 샤프트의 일단으로부터 절곡되는 금속부; 및상기 로터의 외측에 배치되며, 상기 금속부의 인덕턴스를 감지하는 센서부를 포함하는 모터.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202280020202.5A CN116964915A (zh) | 2021-03-09 | 2022-03-08 | 电机 |
EP22767468.6A EP4307539A1 (en) | 2021-03-09 | 2022-03-08 | Motor |
JP2023553566A JP2024509186A (ja) | 2021-03-09 | 2022-03-08 | モーター |
US18/274,837 US20240030762A1 (en) | 2021-03-09 | 2022-03-08 | Motor |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020210030848A KR20220126501A (ko) | 2021-03-09 | 2021-03-09 | 모터 |
KR10-2021-0030848 | 2021-03-09 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2022191572A1 true WO2022191572A1 (ko) | 2022-09-15 |
Family
ID=83228020
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/KR2022/003254 WO2022191572A1 (ko) | 2021-03-09 | 2022-03-08 | 모터 |
Country Status (6)
Country | Link |
---|---|
US (1) | US20240030762A1 (ko) |
EP (1) | EP4307539A1 (ko) |
JP (1) | JP2024509186A (ko) |
KR (1) | KR20220126501A (ko) |
CN (1) | CN116964915A (ko) |
WO (1) | WO2022191572A1 (ko) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6693422B2 (en) * | 1998-07-20 | 2004-02-17 | Uqm Technologies, Inc. | Accurate rotor position sensor and method using magnet and sensors mounted adjacent to the magnet and motor |
KR101555804B1 (ko) * | 2012-09-25 | 2015-09-24 | 가부시키가이샤 야스카와덴키 | 회전 전기 |
KR20190096090A (ko) * | 2018-02-08 | 2019-08-19 | 엘지이노텍 주식회사 | 모터 |
KR102053629B1 (ko) * | 2017-12-26 | 2019-12-12 | 현대트랜시스 주식회사 | 로터를 견인 제어하는 차량용 구동 모터 |
JP2020092469A (ja) * | 2018-12-03 | 2020-06-11 | 三菱電機株式会社 | 回転電機及び送風機 |
-
2021
- 2021-03-09 KR KR1020210030848A patent/KR20220126501A/ko unknown
-
2022
- 2022-03-08 EP EP22767468.6A patent/EP4307539A1/en active Pending
- 2022-03-08 US US18/274,837 patent/US20240030762A1/en active Pending
- 2022-03-08 CN CN202280020202.5A patent/CN116964915A/zh active Pending
- 2022-03-08 WO PCT/KR2022/003254 patent/WO2022191572A1/ko active Application Filing
- 2022-03-08 JP JP2023553566A patent/JP2024509186A/ja active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6693422B2 (en) * | 1998-07-20 | 2004-02-17 | Uqm Technologies, Inc. | Accurate rotor position sensor and method using magnet and sensors mounted adjacent to the magnet and motor |
KR101555804B1 (ko) * | 2012-09-25 | 2015-09-24 | 가부시키가이샤 야스카와덴키 | 회전 전기 |
KR102053629B1 (ko) * | 2017-12-26 | 2019-12-12 | 현대트랜시스 주식회사 | 로터를 견인 제어하는 차량용 구동 모터 |
KR20190096090A (ko) * | 2018-02-08 | 2019-08-19 | 엘지이노텍 주식회사 | 모터 |
JP2020092469A (ja) * | 2018-12-03 | 2020-06-11 | 三菱電機株式会社 | 回転電機及び送風機 |
Also Published As
Publication number | Publication date |
---|---|
JP2024509186A (ja) | 2024-02-29 |
EP4307539A1 (en) | 2024-01-17 |
KR20220126501A (ko) | 2022-09-16 |
US20240030762A1 (en) | 2024-01-25 |
CN116964915A (zh) | 2023-10-27 |
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