WO2013108504A1 - 片持ち軸電動機 - Google Patents
片持ち軸電動機 Download PDFInfo
- Publication number
- WO2013108504A1 WO2013108504A1 PCT/JP2012/081678 JP2012081678W WO2013108504A1 WO 2013108504 A1 WO2013108504 A1 WO 2013108504A1 JP 2012081678 W JP2012081678 W JP 2012081678W WO 2013108504 A1 WO2013108504 A1 WO 2013108504A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- rotor
- stator
- shaft
- motor
- partition plate
- Prior art date
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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
- H02K5/10—Casings or enclosures characterised by the shape, form or construction thereof with arrangements for protection from ingress, e.g. water or fingers
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/16—Centering rotors within the stator; Balancing rotors
-
- 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
- H02K7/085—Structural association with bearings radially supporting the rotary shaft at only one end of the rotor
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2201/00—Specific aspects not provided for in the other groups of this subclass relating to the magnetic circuits
- H02K2201/03—Machines characterised by aspects of the air-gap between rotor and stator
Definitions
- the present invention relates to a structure of an electric motor, and more particularly to a cantilever motor in which a rotating shaft is supported in a cantilever manner by a bearing on the anti-load side.
- the housing 1 of the electric motor has a flange on the load side, and is fixed to a flange of a load-side device (not shown) with a bolt.
- the opposite side of the rotating shaft 7 is rotatably supported by a bearing 6, and a connecting plate 8 connected to a load rotating shaft (not shown) is attached to the shaft end on the load side of the rotating shaft 7, so that a load device (not shown) is attached.
- the rotary shaft is supported by the side bearing.
- the electric motor before the connection with the load is a cantilever shaft in which the rotating shaft 7 is supported only by the bearing 6 on the anti-load side, the shaft end on the unsupported load side is inclined, and the rotor 5 contacts the stator 4. To do.
- the rotor 5 is damaged by coming into contact with the stator 4. Further, the entire mass of the rotating shaft is applied to the bearing 6 and may be damaged.
- a connecting plate 8 that supports the rotary shaft 7 and a fixing jig 11A for fixing the connecting plate 8 to the housing 1 are prepared.
- the fixing jig 11A is attached by the fixing bolts 11B and 11C between the flange of the frame of the housing 1 and the tilt of the rotating shaft 7 is prevented.
- the electric motor is transported, and such a state of the electric motor is maintained until immediately before the connection with the load device.
- the fixing jig 11A is removed.
- the fixing jig 11A since the fixing jig 11A is removed and becomes unnecessary after the connection with the load device is completed, the fixing jig 11A that has become unnecessary is also returned to the motor manufacturer for reuse. Is ideal.
- Patent Documents 1 to 3 can be cited.
- Patent Document 1 introduces a method of transporting a cantilevered motor fixed by a protection device (fixing jig) during transportation.
- fixing jig a protection device
- this method is devised in the shape of the fixing jig, the fixing jig is necessary during transportation to the electric motor as in FIG. 1, and the disposal of the fixing jig is a problem when the connection with the load device is finished. It becomes.
- Patent Document 2 discloses an electric motor transport in which an elastic holding body is inserted into a gap between the inner periphery of the motor housing and the outer periphery of the output-side rotor shaft, and the elastic holding body is removed when assembled to the counterpart vehicle body.
- An apparatus is disclosed.
- disposal of the elastic holder when assembled to the counterpart vehicle body becomes a problem.
- Patent Document 3 in a rotating electrical machine having a single-bearing structure, the center of the outer frame can be understood without removing the connection-side protective cover when aligning the axis of the free rotating shaft with the center of the outer frame.
- the rotor core touches the stator core and damages the iron core and the coil, and the mass of the rotating shaft on the non-load side single bearing There is a risk of damage.
- the cantilever motor does not have a bearing on the load side and there is no end bracket present in a normal motor, the internal stator and rotor are exposed and unprotected. Accordingly, there is a possibility that moisture and foreign matter may enter before being connected to the load side device. For example, it is necessary to cover the protective material such as vinyl to prevent the entry of moisture and foreign matter. However, since it is necessary to remove the protective material in connection with the load device, there is a risk that foreign matter may enter the connection work with the load device. If a foreign object has entered, the stator will be damaged by the foreign object when the motor rotates, causing the problem that the worst cause the motor to burn out, and the motor and its installation are not reliable. There was a problem.
- An object of the present invention is to provide a cantilever motor that prevents damage to a stator and a rotor at the time of transportation, improves handling at the time of transportation and connection to a load side, and prevents foreign matter from entering.
- the present invention provides a stator fixed on the inner diameter side of a housing, a rotor that is arranged to face the inner peripheral side of the stator and is rotatably supported,
- a stator fixed on the inner diameter side of a housing
- a rotor that is arranged to face the inner peripheral side of the stator and is rotatably supported
- the cantilever motor with the structure that the rotary shaft bearing is provided on the non-load side, and the rotary shaft on the load side is supported on the equipment side of the load.
- a partition plate having a through hole through which the rotor rotation shaft passes is provided on the load side of the rotor, and a clearance between the through hole of the partition plate and the rotation shaft of the rotor is S1, and the stator and the rotation
- the inner diameter dimension of the through hole of the partition plate is set so that S1 ⁇ S2 when the gap between the children is S2.
- the inner diameter dimension of the through hole of the partition plate was set so that a gap was generated between the inner periphery of the stator and the outer periphery of the rotor in a state where the rotating shaft of the rotor was in contact with the inner periphery thereof. It is characterized by.
- the rotating shaft of the rotor is stored or transported in an inclined state in contact with the inner periphery of the through hole of the partition plate.
- a permanent magnet is mounted on the outer periphery of the rotor so as to face the inner peripheral side of the stator, and the rotating shaft is connected to the inner periphery of the through hole of the partition plate in a state where the rotor is attracted to the stator by a magnetic force. It touches.
- the stator and the rotor can be prevented from being damaged during transportation, and the partition plate that remains attached does not need to be managed, and also functions as a protective material for preventing the entry of foreign matter. Can be improved.
- FIG. 3 is an explanatory view of a partition plate as viewed from a cross-section AA in FIG. It is a front view of the partition plate simple substance in FIG. It is sectional drawing of the partition plate single-piece
- FIG. 1 is a cross-sectional view of a permanent magnet type synchronous motor of a cantilevered shaft motor according to an embodiment of the present invention
- FIG. 2 is a cross-sectional view showing the same motor during storage or transport.
- the cantilever shaft motor shown in FIG. 1 includes a stator 24 fixed to the inner diameter side of an inner housing 22 of a housing 21 and a rotation that is rotatably disposed so as to face the inner peripheral side of the stator 24.
- the rotor 25 and the bearing (ball bearing) 602 of the rotating shaft 27 of the rotor 25 are provided on the non-load side, and the rotating shaft 27 on the load side is supported on the equipment side of the load.
- a permanent magnet 26 is attached to the outer periphery of the rotor 25 so as to face the inner peripheral side of the stator 24.
- the motor housing 21 has a flange 21a on the load side, and is fixed to a flange of a load side device (not shown) with a bolt (not shown).
- the counterload side of the rotating shaft 27 of the rotor 25 of the electric motor is rotatably supported by a bearing (ball bearing) 602 provided on the end bracket 23, and a load (not shown) is connected to the load end of the rotating shaft 7.
- a connecting plate 28 connected to the rotating shaft is attached, and the rotating shaft 27 is supported by a bearing on the load device side (not shown).
- a bearing outer ring 601, a bearing inner ring 603, and a bearing cover 20 are provided inside and outside the bearing (ball bearing) 602.
- FIG. 1 shows a state in which the non-load side of the rotating shaft 27 is rotatably supported by a bearing (ball bearing) 602 and the load side of the rotating shaft 27 is connected to the load rotating shaft via the connecting plate 28.
- the partition plate 29 is a partition plate fixed to the inner housing 22 concentrically with the rotary shaft 27 at a position close to the load side of the rotor 25.
- the partition plate 29 functions to protect the stator 24 and the rotor 25 in the electric motor, and a through hole 901 larger than the diameter of the rotary shaft 27 through which the rotary shaft 27 passes is provided at the center.
- the diameter (inner diameter dimension) of the through hole 901 is L
- the diameter (outer diameter dimension) of the rotating shaft 27 is l.
- the clearance between the outer periphery of the rotating shaft 27 and the inner periphery of the through hole 901 is S1
- the clearance between the outer periphery of the stator 22 and the outer periphery of the rotor 25 is S1
- the dimensions of the diameter (inner diameter dimension) L of the through hole 901 and the diameter (outer diameter dimension) 1 of the rotating shaft 27 are set so that S1 ⁇ S2 when S2.
- FIG. 2 shows a state where the motor is stored or transported as described above.
- the load side of the rotating shaft 27 is not supported by being removed from the load device side.
- the rotating shaft 27 rotates clockwise with the bearing (ball bearing) 602 on the side opposite to the load due to its own weight, and is inclined by an angle ⁇ and is in contact with the inner peripheral lower side of the through hole 901 of the partition plate 29. It has become.
- the rotating shaft 27 is inclined downward, the rotor 25 is also inclined together, and the outer periphery thereof approaches the inner periphery of the stator 24.
- this inclination becomes large the rotor 25 and the stator 24 may come into contact with each other and may be damaged.
- the diameter of the through-hole 901 (the diameter of the through-hole 901) is inevitably generated between the inner circumference of the stator 22 and the outer circumference of the rotor 25 in a state where the rotary shaft 27 is in contact with the inner circumference of the through-hole 901.
- the inner diameter dimension L and the diameter (outer diameter dimension) 1 of the rotary shaft 27 are set.
- the gap 12 is a gap between a position closest to the load (load side position) on the outer periphery of the rotor 25 and a position on the load side of the inner periphery of the stator 24 opposite to the load.
- the rotary shaft 27 When the motor is stored or transported, the rotary shaft 27 is supported by the bearing 602 on the anti-load side and the partition plate 29, and serves as a fixing jig for transporting the motor to the partition plate 29.
- the rotating shaft 27 When the rotating shaft 27 is inclined and supported (contacted) by the through hole 901 of the partition plate 29, the permanent magnet of the rotor 25 is attracted to the stator 24, so that the motor is stored or transported. Sometimes it is stably supported by the through hole 901.
- the portion of the rotating shaft 27 that is in contact with the through hole 901 may be rubbed with some vibration during the conveyance of the electric motor, but it is not a portion that is supported by the bearing of the load device, so when rotating while being supported by the load It will not be a hindrance.
- the rotary shaft 27 is supported between the bearing 602 on the anti-load side and the bearing on the load device side (not shown), so that the inside of the through hole 901 of the partition plate 29 It lifts away from the contact state with the peripheral surface, and becomes rotatable without contacting the through-hole 901 as shown in FIG.
- the partition plate 29 finishes its role as a fixing jig, but it is not necessary to remove it after the electric motor is connected to the load device, so that the handling becomes easy.
- the interior of the motor is cut off from the outside by the partition plate 29, moisture and foreign matter from the outside are inside the motor having the stator 24 and the rotor 25 even during transportation or when connected to the load device. There is a low possibility of entering the network, and there is an advantage of improving reliability.
- FIG. 3 is an explanatory diagram of the partition plate as viewed from the cross-section AA in FIG. 2.
- the outer periphery of the rotary shaft 27 is in contact with the lower surface of the inner periphery of the through hole 901.
- Reference numeral 903 denotes a bolt for fixing the partition plate 29 to the inner housing 22.
- FIG. 4 is a front view of the partition plate alone in FIG. 2, and 902 is a hole for fixing the partition plate 29 to the inner housing 22.
- FIG. 5 is a cross-sectional view of the partition plate alone in FIG. 2, and 904 is a step provided on the partition plate 29 for engaging with the inner housing 22.
- the fixing jig As described above, it is not necessary to remove the fixing jig that was attached only for transportation, and the fixing jig can be left inside the motor, so there is no need to manage the fixing jig. There is no need to produce quantities. Since it also functions as a protective material inside the electric motor, the electric motor can be easily handled.
- the through hole 901 of the partition plate serves as one fulcrum that supports the rotating shaft, so that even if the end bracket 23 on the anti-load side is removed while being connected to the load device.
- the rotating shaft 27 can be supported at two points: the bearing on the load side and the partition plate 29. Therefore, the rotation shaft 27 does not tilt greatly, and the rotor 25 does not contact the stator 24.
- the bearing 6 on the anti-load side is exposed, so that the bearing 602 can be easily removed using a commercially available drawing tool for bearings.
- the newly installed bearing can be heated with a commercially available bearing heater or the like and can be shrink-fitted onto the rotating shaft. Therefore, it is not necessary to remove the rotating shaft, and the replacement is completed when the end bracket 23 is returned to its original position.
- the bearing 602 can be replaced in a short time without removing the electric motor from the load device and without removing the rotating shaft 27, so that there is an effect that the maintainability is excellent.
Abstract
Description
前記回転子の負荷側に回転子の回転軸が貫通する貫通孔を有する仕切板を備え、前記仕切板の貫通孔と前記回転子の回転軸との隙間をS1とし、前記固定子と前記回転子の隙間をS2としたとき、S1≦S2となるように前記仕切板の貫通孔の内径寸法が設定されていることを特徴とする。
前記仕切板の貫通孔の内径寸法は、その内周に前記回転子の回転軸が接触した状態で、前記固定子の内周と回転子の外周の間に隙間が生じるように設定されたことを特徴とする。
前記回転子の回転軸が前記仕切板の貫通孔の内周に接触して傾斜した状態で保管または搬送されることを特徴とする。
前記回転子の外周に前記固定子の内周側に対向するように永久磁石が装着され、回転軸は前記回転子が磁力により固定子に吸引された状態で前記仕切板の貫通孔の内周に接触することを特徴とする。
Claims (6)
- ハウジングの内径側に固設された固定子と、前記固定子の内周側に対向配置されて回転自在に支承された回転子と、前記回転子の回転軸の軸受を反負荷側に備え、負荷側の回転軸は負荷の機器側で支持される構造の片持ち軸電動機において、
前記回転子の負荷側に回転子の回転軸が貫通する貫通孔を有する仕切板を備え、前記仕切板の貫通孔と前記回転子の回転軸との隙間をS1とし、前記固定子と前記回転子の隙間をS2としたとき、S1≦S2となるように設定されていることを特徴とする片持ち軸電動機。 - 請求項1に記載の片持ち軸電動機において、
前記貫通孔の直径および前記回転軸の直径は、S1≦S2となるように寸法が設定されていることを特徴とする片持ち軸電動機。 - 請求項1に記載の片持ち軸電動機において、
前記仕切板の貫通孔の内径寸法は、前記回転子の回転軸が傾斜して前記貫通孔の内周に接触した状態で、前記固定子の内周と回転子の外周の間に隙間が生じるように設定されたことを特徴とする片持ち軸電動機。 - 請求項3に記載の片持ち軸電動機において、
前記固定子の内周と回転子の外周の間に隙間は、前記回転子の外周の負荷に近い位置と、これに対向する前記固定子の内周との隙間であることを特徴とする片持ち軸電動機。 - 請求項3または4に記載の片持ち軸電動機において、
前記回転子の回転軸が前記仕切板の貫通孔の内周に接触して傾斜した状態で保管または搬送されることを特徴とする片持ち軸電動機。 - 請求項3~5のいずれかに記載の片持ち軸電動機において、
前記回転子の外周に前記固定子の内周側に対向するように永久磁石が装着され、回転軸は前記回転子が磁力により固定子に吸引された状態で前記仕切板の貫通孔の内周に接触することを特徴とする片持ち軸電動機。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2012366503A AU2012366503B2 (en) | 2012-01-17 | 2012-12-06 | Cantilevered-shaft electric motor |
EP12866172.5A EP2806541B1 (en) | 2012-01-17 | 2012-12-06 | Cantilevered-shaft electric motor |
US14/372,642 US9853518B2 (en) | 2012-01-17 | 2012-12-06 | Cantilevered-shaft electric motor |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2012006907A JP5750057B2 (ja) | 2012-01-17 | 2012-01-17 | 片持ち軸電動機 |
JP2012-006907 | 2012-01-17 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2013108504A1 true WO2013108504A1 (ja) | 2013-07-25 |
Family
ID=48798941
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2012/081678 WO2013108504A1 (ja) | 2012-01-17 | 2012-12-06 | 片持ち軸電動機 |
Country Status (5)
Country | Link |
---|---|
US (1) | US9853518B2 (ja) |
EP (1) | EP2806541B1 (ja) |
JP (1) | JP5750057B2 (ja) |
AU (1) | AU2012366503B2 (ja) |
WO (1) | WO2013108504A1 (ja) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3079238B1 (de) * | 2015-04-07 | 2020-08-12 | Magna PT B.V. & Co. KG | Elektrische maschinenanordnung und kraftfahrzeuggetriebe |
DE102015222792A1 (de) * | 2015-11-18 | 2017-05-18 | Baumüller Nürnberg GmbH | Motorbaugruppe |
CN108199540A (zh) * | 2017-12-19 | 2018-06-22 | 李浩然 | 一种双轴过力矩保护电机 |
DE102018001642A1 (de) | 2018-03-02 | 2019-09-05 | Daimler Ag | Antriebseinheit für ein Kraftfahrzeug, insbesondere für einen Kraftwagen |
JP7047681B2 (ja) * | 2018-09-07 | 2022-04-05 | 株式会社明電舎 | 回転電機の仮固定治具及びこれを使用する回転電機の組立方法 |
DE102022104929B3 (de) | 2022-03-02 | 2023-03-09 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Leicht und sicher montierbare elektrische Maschine sowie Verfahren zur leichten und sicheren Montage einer derartigen elektrischen Maschine |
DE102022128564A1 (de) | 2022-10-27 | 2024-05-02 | Minebea Mitsumi Inc. | Motorvorrichtung und Motor |
Citations (8)
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---|---|---|---|---|
JPS5846845A (ja) | 1981-09-11 | 1983-03-18 | Meidensha Electric Mfg Co Ltd | 片軸受構造の回転電機 |
JPS63182667U (ja) * | 1987-05-18 | 1988-11-24 | ||
JPS63187573U (ja) * | 1987-05-20 | 1988-12-01 | ||
JPH07274455A (ja) | 1994-03-29 | 1995-10-20 | Hitachi Ltd | 電動機搬送装置 |
JPH09247890A (ja) * | 1996-03-05 | 1997-09-19 | Fuji Electric Co Ltd | 片持ち軸の回転電機の輸送時保護装置 |
JP2007325426A (ja) * | 2006-06-01 | 2007-12-13 | Mitsubishi Electric Corp | 片持ち軸回転電動機 |
JP4463898B2 (ja) | 1999-06-04 | 2010-05-19 | 三菱電機株式会社 | 片持ち軸回転電動機 |
WO2011051996A1 (ja) * | 2009-10-26 | 2011-05-05 | 株式会社日立製作所 | 永久磁石式回転電機及び車両用永久磁石式回転電機システム |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2919971B1 (fr) * | 2007-08-06 | 2009-10-16 | Leroy Somer Moteurs | Generateur electrique et installation comportant une tour d'eclairage alimentee par un tel generateur |
US7723895B2 (en) | 2007-11-07 | 2010-05-25 | Gm Global Technology Operations, Inc. | Rotating electric machine apparatus and method of assembly |
-
2012
- 2012-01-17 JP JP2012006907A patent/JP5750057B2/ja not_active Expired - Fee Related
- 2012-12-06 WO PCT/JP2012/081678 patent/WO2013108504A1/ja active Application Filing
- 2012-12-06 AU AU2012366503A patent/AU2012366503B2/en not_active Ceased
- 2012-12-06 EP EP12866172.5A patent/EP2806541B1/en not_active Not-in-force
- 2012-12-06 US US14/372,642 patent/US9853518B2/en not_active Expired - Fee Related
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5846845A (ja) | 1981-09-11 | 1983-03-18 | Meidensha Electric Mfg Co Ltd | 片軸受構造の回転電機 |
JPS63182667U (ja) * | 1987-05-18 | 1988-11-24 | ||
JPS63187573U (ja) * | 1987-05-20 | 1988-12-01 | ||
JPH07274455A (ja) | 1994-03-29 | 1995-10-20 | Hitachi Ltd | 電動機搬送装置 |
JPH09247890A (ja) * | 1996-03-05 | 1997-09-19 | Fuji Electric Co Ltd | 片持ち軸の回転電機の輸送時保護装置 |
JP4463898B2 (ja) | 1999-06-04 | 2010-05-19 | 三菱電機株式会社 | 片持ち軸回転電動機 |
JP2007325426A (ja) * | 2006-06-01 | 2007-12-13 | Mitsubishi Electric Corp | 片持ち軸回転電動機 |
WO2011051996A1 (ja) * | 2009-10-26 | 2011-05-05 | 株式会社日立製作所 | 永久磁石式回転電機及び車両用永久磁石式回転電機システム |
Also Published As
Publication number | Publication date |
---|---|
US9853518B2 (en) | 2017-12-26 |
EP2806541B1 (en) | 2019-02-13 |
EP2806541A1 (en) | 2014-11-26 |
AU2012366503A1 (en) | 2014-08-07 |
JP5750057B2 (ja) | 2015-07-15 |
AU2012366503B2 (en) | 2016-02-25 |
EP2806541A4 (en) | 2016-04-27 |
JP2013150381A (ja) | 2013-08-01 |
US20150097456A1 (en) | 2015-04-09 |
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