WO2022220588A1 - 모터 - Google Patents
모터 Download PDFInfo
- Publication number
- WO2022220588A1 WO2022220588A1 PCT/KR2022/005361 KR2022005361W WO2022220588A1 WO 2022220588 A1 WO2022220588 A1 WO 2022220588A1 KR 2022005361 W KR2022005361 W KR 2022005361W WO 2022220588 A1 WO2022220588 A1 WO 2022220588A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- shaft
- bearing
- region
- groove
- bearing housing
- Prior art date
Links
- 230000002093 peripheral effect Effects 0.000 claims description 5
- 239000012212 insulator Substances 0.000 description 3
- 230000003993 interaction Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 1
Images
Classifications
-
- 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
- H02K5/161—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields 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
- 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
-
- 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
-
- 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
- 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
-
- 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
Definitions
- the embodiment relates to a motor.
- the motor is a shaft. It includes a rotor and a stator. The rotor and stator are included in the housing.
- the stator may include a stator core and a coil wound around the stator core.
- the shaft may be a hollow member.
- a bearing supporting the shaft may support one side and the other side of the shaft, respectively.
- one side of the shaft may be coupled to the bearing housing, and the bearing may support the bearing housing.
- the shaft of the external device may be connected to the inside of the shaft. Therefore, a separate device supporting the shaft must be provided inside the housing of the motor. In order to provide a device for supporting the shaft of the external device in this way, there are inevitably problems in that the number of parts increases and the manufacturing process of the motor becomes complicated.
- the embodiment is intended to solve the above problems, while supporting the shaft of an external device connected to the inside of the shaft, and reducing the number of parts, and providing a motor capable of simplifying the manufacturing process of the motor. .
- An embodiment for achieving the above object includes a shaft, a rotor coupled to the shaft, and a stator disposed to correspond to the rotor, and a bearing supporting the shaft and a bearing housing supporting the bearing,
- the bearing housing includes a first groove in which the shaft is disposed, the outer surface of the bearing housing includes a first surface and a second surface, the first surface is in contact with the inner peripheral surface of the inner ring of the bearing, and Two surfaces may be in contact with one surface of an inner ring of the bearing, and the bearing housing may include a second groove disposed on a bottom surface of the first groove.
- the bearing housing on which the bearing is mounted as a structure to support the shaft of an external device that enters the inside of the shaft, there is an advantage in that the number of parts can be reduced and the manufacturing process of the motor can be simplified.
- the outer surface of the bearing housing utilizes an area for supporting the bearing, and the inner surface of the bearing housing is used as a structure to support the shaft of the external device, so that a structure for supporting the shaft of the external device can be easily formed. There is this.
- the configuration for supporting the bearing and the configuration for supporting the shaft of the external device are the same, strength is improved and management is easy.
- FIG. 1 is a view showing a motor according to an embodiment
- Figure 2 is a view showing the shaft shown in Figure 1;
- FIG. 3 is a side cross-sectional view of the shaft taken along line A-A of FIG. 2;
- Figure 4 is a perspective view showing the bearing housing shown in Figure 1;
- FIG. 5 is a side cross-sectional view taken along line A-A of FIG. 4;
- FIG. 6 is a plan view of the bearing housing shown in FIG. 4;
- the direction parallel to the longitudinal direction (up and down direction) of the shaft is called the axial direction
- the direction perpendicular to the axial direction with respect to the shaft is called the radial direction
- the direction along a circle having a radial radius around the shaft is the circumference called the direction.
- FIG. 1 is a diagram illustrating a motor according to an embodiment.
- the motor may include a shaft 100 , a rotor 200 , and a stator 300 .
- inside indicates a direction from the housing 600 toward the shaft 100, which is the center of the motor
- outside indicates a direction opposite to the inside, which is a direction from the shaft 100 to the direction of the housing 600.
- the following radial direction is based on the axial center of the shaft 100 .
- the shaft 100 may be coupled to the rotor 200 .
- the shaft 100 may be a hollow member.
- the shaft of the external device may enter the shaft 100 .
- the rotor 200 rotates through electrical interaction with the stator 300 .
- the rotor 200 may be disposed inside the stator 300 .
- the stator 300 is disposed outside the rotor 200 .
- the stator 300 may include a stator core 310 , an insulator 320 mounted on the stator core 310 , and a coil 330 .
- the coil 330 may be wound around the insulator 320 .
- the insulator 320 is disposed between the coil 330 and the stator core 310 to electrically insulate the stator core 310 and the coil 330 from each other.
- the coil 330 causes an electrical interaction with the magnet of the rotor 200 .
- the bearing 400 is fixed to the housing 600 .
- the bearing 400 rotatably supports the bearing housing 500 .
- the bearing housing 500 serves to support the bearing 400 and the shaft entering the inside of the shaft 100 together.
- the bearing housing 500 is coupled to the end 120 of the shaft 100 .
- the bearing housing 500 is disposed near the bottom surface of the housing 600 .
- the bearing housing 500 is in contact with the inner ring ( 410 in FIG. 7 ) of the bearing 400 .
- the stator 300 and the rotor 200 are disposed inside the housing 600 .
- the bearing housing 500 is disposed inside the housing 600 .
- FIG. 2 is a view showing the shaft 100 shown in FIG. 1
- FIG. 3 is a side cross-sectional view of the shaft 100 taken along line A-A of FIG. 2 .
- the shaft 100 may include a central portion 110 and an end portion 120 having different outer diameters.
- the end 120 of the shaft 100 is a region coupled to the bearing housing 500 .
- the outer diameter of the end 120 of the shaft 100 may be smaller than the outer diameter of the central portion 110 .
- FIG. 4 is a perspective view showing the bearing housing 500 shown in FIG. 1
- FIG. 5 is a side cross-sectional view taken along line A-A of FIG. 4
- FIG. 6 is a plan view of the bearing housing 500 shown in FIG.
- FIG. 7 is a side cross-sectional view of the vicinity of the bearing housing 500 .
- the bearing housing 500 includes an outer surface and an inner surface.
- the outer surface of the bearing housing 500 may include a first surface S1 and a second surface S2 .
- the first surface S1 is a surface in contact with the inner ring ( 410 in FIG. 7 ) of the bearing 400 and may be a part of the outer circumferential surface of the bearing housing 500 .
- the second surface S2 is a surface in contact with one surface of the inner ring 410 of FIG. 7 of the bearing 400 , and may be formed in a radial direction to be a stepped surface of the first surface S1 .
- the bearing housing 500 may include a first groove 510 and a second groove 520 that form an inner surface.
- the first groove 510 may include a first region 511 and a second region 512 disposed along the axial direction.
- the inner diameter D1 of the first region 511 is greater than the inner diameter D2 of the second region 512 .
- the first region 511 may include a 1-1 region 511a and a 1-2 th region 511b.
- the 1-1 region 511a forms a space into which the shaft 100 is press-fitted.
- the inner diameter D11 of the 1-1 region 511a corresponds to the outer diameter SD2 of the shaft 100 .
- the first and second inner diameters D12 are smaller than the outer diameters SD2 of the shaft 100 .
- the first groove 510 may include a third surface S3 and a fourth surface S4 forming the 1-1 region 511a.
- the third surface S3 is a part of the inner circumferential surface of the bearing housing 500 and corresponds to a region in contact with the outer surface of the end 120 of the shaft 100 .
- the fourth surface S4 is a part of the inner surface of the bearing housing 500 , and may be formed in a radial direction to be a stepped surface of the third surface S3 .
- the fourth surface S4 corresponds to a region in contact with the end surface of the shaft 100 .
- the fourth surface S4 determines the axial position of the shaft 100 when the shaft 100 and the bearing housing 500 are coupled, and serves to support the shaft 100 in the axial direction.
- the inner diameter D12 of the first-second region 511b is larger than the inner diameter of the shaft 100 .
- the inner diameter D1 of the first region 511 is smaller than the outer diameter BD2 of the bearing 400 .
- the inner diameter D1 of the first region 511 is greater than the inner diameter BD1 of the bearing 400 .
- the inner diameter D2 of the second region 512 is smaller than the inner diameter BD1 of the bearing 400 .
- the second groove 520 may be concavely formed in the bottom surface 513 of the second region 512 of the first groove 510 .
- the second groove 520 is a region to which the shaft of the external device is connected.
- the second groove 520 may include a plurality of sidewalls 521 , and each sidewall 521 may be disposed to form an angle with each other. For example, when viewed in the axial direction, the second groove 520 may have a polygonal shape.
- the shaft 100 is coupled to the inside of the bearing housing 500 and the bearing 400 is fixed to the outside of the bearing housing 500 .
- the inner circumferential surface and one surface of the inner ring 410 of the bearing 400 are in contact with the outer surface of the bearing housing 500 .
- the outer peripheral surface and the other surface of the outer ring of the bearing 400 may contact the housing.
- the end 120 of the shaft 100 is positioned inside the bearing housing 500 to overlap in the radial direction.
- the second groove 520 connected to the shaft of the outer peripheral device is disposed to overlap the bearing 400 in the radial direction.
- the outer surface of the bearing housing 500 utilizes the region supporting the bearing 400 , and the inner surface of the bearing housing 500 is used as a structure to support the shaft of the external device, thereby facilitating a structure supporting the shaft of the external device.
- the configuration for supporting the bearing 400 and the configuration for supporting the shaft of the external device are the same, strength is improved and management is easy.
- the above-described embodiment may be used in various devices such as for vehicles or home appliances.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Motor Or Generator Frames (AREA)
- Mounting Of Bearings Or Others (AREA)
Abstract
Description
Claims (9)
- 샤프트;상기 샤프트에 결합된 로터; 및상기 로터와 대응되게 배치되는 스테이터;를 포함하고,상기 샤프트를 지지하는 베어링과 상기 베어링을 지지하는 베어링 하우징을 포함하고,상기 베어링 하우징은 상기 샤프트가 배치되는 제1 홈을 포함하고,상기 베어링 하우징의 외면은 제1 면과 제2 면을 포함하고,상기 제1 면은 상기 베어링의 내륜의 내주면과 접촉하고,상가 제2 면은 상기 베어링의 내륜의 일면과 접촉하고,상기 베어링 하우징은 상기 제1 홈의 바닥면에 배치되는 제2 홈을 포함하는 모터.
- 제1 항에 있어서,상기 제1 홈은 상기 샤프트의 외면과 접촉하는 제3 면과 상기 샤프트의 끝단면과 접촉하는 제4 면을 포함하는 모터.
- 제1 항에 있어서,상기 제1 홈은 축 방향을 따라 배치되는 제1 영역과 제2 영역을 포함하고,상기 제1 영역은 상기 베어링의 내경보다 크고, 상기 제2 영역은 상기 베어링의 내경보다 작은 모터.
- 제3 항에 있어서,상기 제1 영역은 축방향을 따라 배치되는 제1-1 영역과 제1-2 영역을 포함하고,상기 제1-1 영역의 내경은 상기 샤프트의 외경과 대응되고, 상기 제1-2 영역의 내경은 상기 샤프트의 외경보다 작은 모터.
- 제4 항에 있어서,상기 제1-2 영역의 내경은 상기 샤프트의 내경보다 큰 모터.
- 제3 항에 있어서,상기 제1 영역의 외경은 상기 베어링의 외경보다 작은 모터.
- 제1 항에 있어서,상기 제2 홈은 반경방향으로 상기 베어링과 오버랩되게 배치되는 모터.
- 제1 항에 있어서,상기 제2 홈은 복수 개의 측벽을 포함하고, 복수 개의 상기 측벽은 서로 각을 이루도록 배치되는 모터.
- 제1 항에 있어서,상기 스테이터의 외측에 배치되는 하우징을 더 포함하고,상기 하우징은 상기 베어링의 외륜의 외주면 및 타면에 접촉하는 모터.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202280028310.7A CN117121345A (zh) | 2021-04-13 | 2022-04-13 | 马达 |
JP2023563089A JP2024514330A (ja) | 2021-04-13 | 2022-04-13 | モータ |
US18/286,865 US20240195260A1 (en) | 2021-04-13 | 2022-04-13 | Motor |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020210047831A KR20220141561A (ko) | 2021-04-13 | 2021-04-13 | 모터 |
KR10-2021-0047831 | 2021-04-13 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2022220588A1 true WO2022220588A1 (ko) | 2022-10-20 |
Family
ID=83640788
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/KR2022/005361 WO2022220588A1 (ko) | 2021-04-13 | 2022-04-13 | 모터 |
Country Status (5)
Country | Link |
---|---|
US (1) | US20240195260A1 (ko) |
JP (1) | JP2024514330A (ko) |
KR (1) | KR20220141561A (ko) |
CN (1) | CN117121345A (ko) |
WO (1) | WO2022220588A1 (ko) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100478419B1 (ko) * | 2004-07-29 | 2005-03-23 | (주)지엔더블유테크놀러지 | 유체동압베어링 모터 |
KR20110010231A (ko) * | 2009-07-24 | 2011-02-01 | 엘지이노텍 주식회사 | 스핀들 모터 |
KR101188096B1 (ko) * | 2012-02-27 | 2012-10-08 | 삼성전기주식회사 | 베어링 조립체 및 이를 이용하는 모터 |
KR20160089784A (ko) * | 2015-01-20 | 2016-07-28 | 엘지이노텍 주식회사 | 모터의 하우징 및 이를 포함하는 모터 |
KR20200010524A (ko) * | 2020-01-15 | 2020-01-30 | 엘지이노텍 주식회사 | 모터 |
-
2021
- 2021-04-13 KR KR1020210047831A patent/KR20220141561A/ko unknown
-
2022
- 2022-04-13 US US18/286,865 patent/US20240195260A1/en active Pending
- 2022-04-13 JP JP2023563089A patent/JP2024514330A/ja active Pending
- 2022-04-13 CN CN202280028310.7A patent/CN117121345A/zh active Pending
- 2022-04-13 WO PCT/KR2022/005361 patent/WO2022220588A1/ko active Application Filing
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100478419B1 (ko) * | 2004-07-29 | 2005-03-23 | (주)지엔더블유테크놀러지 | 유체동압베어링 모터 |
KR20110010231A (ko) * | 2009-07-24 | 2011-02-01 | 엘지이노텍 주식회사 | 스핀들 모터 |
KR101188096B1 (ko) * | 2012-02-27 | 2012-10-08 | 삼성전기주식회사 | 베어링 조립체 및 이를 이용하는 모터 |
KR20160089784A (ko) * | 2015-01-20 | 2016-07-28 | 엘지이노텍 주식회사 | 모터의 하우징 및 이를 포함하는 모터 |
KR20200010524A (ko) * | 2020-01-15 | 2020-01-30 | 엘지이노텍 주식회사 | 모터 |
Also Published As
Publication number | Publication date |
---|---|
CN117121345A (zh) | 2023-11-24 |
KR20220141561A (ko) | 2022-10-20 |
US20240195260A1 (en) | 2024-06-13 |
JP2024514330A (ja) | 2024-04-01 |
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