WO2001026203A1 - Actionneur integre a un engrenage reducteur - Google Patents
Actionneur integre a un engrenage reducteur Download PDFInfo
- Publication number
- WO2001026203A1 WO2001026203A1 PCT/JP2000/006966 JP0006966W WO0126203A1 WO 2001026203 A1 WO2001026203 A1 WO 2001026203A1 JP 0006966 W JP0006966 W JP 0006966W WO 0126203 A1 WO0126203 A1 WO 0126203A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- rotating
- fixed
- actuator
- position detector
- shaft
- Prior art date
Links
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
- H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
-
- 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
- F16H—GEARING
- F16H49/00—Other gearings
- F16H49/001—Wave gearings, e.g. harmonic drive transmissions
-
- 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
- H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
- H02K7/116—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T74/00—Machine element or mechanism
- Y10T74/19—Gearing
Definitions
- the present invention relates to an inexpensive reducer-integrated actuator that can reduce the axial length of the entire actuator and can increase the driving torque without contradicting the reduction in size and weight.
- actuators that are used in robots and machine tools and integrate a harmonic reduction gear and an electric motor are shown in Fig. 3.
- FIG. 3 is a side sectional view of a conventional reducer-integrated actuator.
- 30 is the actuator
- 3 13 is the load (rule bracket, 31 b, 31 c, 31 d is the actuator frame
- 31 e is the anti-load side bracket
- 32 is Output shaft
- 33 is the rotating shaft
- 34 is the motor
- 35 is the stator
- 36 is the stator core
- 3 is the armature winding: 38 is the rotor
- 39 is the yoke
- 40 is the permanent magnet
- 4 1 is the harmonic deceleration
- 42 is a circular ply
- 43 is a flex spline
- 44 is a wave generator
- 45, 46, 4F, 48 and 49 are bearings
- 50 and 51 are elastic members
- 52 is a rotational position detector
- 53 is a rotation.
- a disc, 54 is a fixed slit
- 55 is a light emitting element
- 56 is a light receiving element
- L is the axial length of the actuator 30.
- Such a reducer-integrated actuator 30 is connected in series in the axial direction from the load side to the non-load side in the order of the harmonic reducer 41, the electric motor 34, and the rotational position detector 52. It has a structure. These devices are fixed inside hollow cylindrical actuator frames 31b, 31c and 31d, respectively, and both ends are connected to the load-side bracket 31a and the anti-load Covered by side bracket 31e.
- the harmonic reducer 41 is fixed to the inner periphery of the actuator frame 31b, is attached to the inside of the circular spline 42 having a circular inner spline 42, and has an output. It is connected to the shaft 32 and is a cup-shaped, flexible flexspline 43 having external teeth.
- the flexspline 43 is mounted inside the flexspline 43 via a bearing 47 and connected to the rotating shaft 33.
- a wave generator 44 having an elliptical shape.
- the bearings 45 and 46 support the output shaft 32 At the same time, the preload is applied by the elastic member 50.
- the bearings 48 and 49 support the rotating shaft 33 and are preloaded by the elastic member 51.
- the electric motor 34 includes a rotor 38 including a yoke 39 fitted to the rotation shaft 33 and a permanent magnet 4 mm serving as a magnetic pole, and is opposed to the outer peripheral side of the rotor 38 via a gap.
- the stator 35 includes a stator core 36 provided and an armature winding 37 for generating a rotating magnetic field in the stator core 36.
- the rotational position detecting section 52 includes a rotating disk 53 serving as a rotating section fixed to the rotating shaft 33, a fixed slit 54 serving as a fixing section of a rotating position detector facing the rotating section, a light emitting element 55,
- the optical encoder comprises an element 56.
- the light receiving element 56 repeats light reception / non-light reception through the fixed slit 54, and detects the light reception / non-light reception as an ON / OFF electric signal. . Thereafter, the angle of the rotor is calculated by a calculation circuit (not shown).
- the harmonic reducer, the electric motor, and the rotational position detector are connected in series, so that the harmonic reducer and the electric motor, especially when the electric motor and the rotational position detector are connected, are connected.
- the space for the rotational position detectors arranged in the axial direction increases, and this has been a problem in reducing the size and weight of the actuator.
- the present invention has been made to solve the above-described problem, and can reduce the axial length of the actuator, increase the driving torque without contradicting the miniaturization and weight reduction, and reduce the cost. It is an object of the present invention to provide a compact reducer-integrated actuator.
- the present invention has the following configuration.
- the present invention provides a hollow cylindrical actuator frame, a circular spline fixed to the actuator frame and having internal teeth on the inner periphery, and an internal tooth of the circular spline.
- a cylindrical flexspline having external teeth meshed with the flexspline and an end face connected to an output shaft of an actuator; an elliptical wave generator mounted on an inner periphery of the flexspline;
- a rotating shaft for rotating the generator is provided, a rotor having magnetic poles made of permanent magnets, and an armature winding for generating a rotating magnetic field on a stator core facing an outer peripheral side of the rotor via an air gap.
- the rotor forms a cup-shaped rotating yoke integrally provided so as to penetrate the rotating shaft at the center, and the permanent magnet is fixed to an outer periphery of the rotating yoke.
- the sagittal spline is formed in a silk hat shape, a flange portion is fixed to one end of the actuator frame, and a cylindrical portion is opposed to the inner periphery of the rotary yoke via a gap.
- a cup-shaped housing connected to the output shaft on the inner peripheral side of the flexspline, and the cup-shaped housing fitted inside the housing.
- a bearing for supporting the rotating shaft and an axial gap between the housing and the bearing.
- An elastic member for applying a preload to the bearing.
- the rotating portion of the rotational position detector has a disk shape magnetized in one direction perpendicular to the rotation axis.
- the fixed portion of the rotational position detector includes a fixed ring provided on the outer peripheral side of the rotary portion of the rotational position detector, and at least two fixed rings attached in the circumferential direction of the fixed ring. It is composed of a magnetic sensor.
- the present invention provides a hollow cylindrical actuator frame, a sacrificial spline fixed to the actuator frame and having internal teeth on an inner periphery, and the sacrificial spline.
- a cylindrical flexspline having external teeth meshing with the internal teeth of the flexspline and having an output shaft of an actuator connected to an end face thereof; an elliptical wave generator mounted on an inner periphery of the flexspline;
- a rotating shaft that rotationally drives the ⁇ -bulb generator, a rotor having magnetic poles made of permanent magnets, and an electric field for generating a rotating magnetic field on a stator core that is opposed to the inner peripheral side of the rotor via an air gap.
- a motor comprising a stator having a winding; a rotating portion of a rotating position detector fixed to the rotating shaft; and a reduction portion having a rotating position detector fixing portion opposed to the rotating portion of the rotating position detector.
- the rotor constitutes a cup-shaped rotating yoke integrally provided so as to penetrate the rotating shaft at the center, and the permanent magnet is fixed to an inner periphery of the rotating yoke.
- the sacrificial spline is formed in a silk hat shape, and has a flange portion fixed to one end of the actuator frame and a cylindrical portion fixed to the inner peripheral side of the stator.
- a cup-shaped housing connected to the output shaft on the inner peripheral side of the flexspline, between the output shaft and the rotating shaft, and the rotating shaft fitted inside the housing. And a resilient member that is provided in an axial gap between the housing and the bearing and applies a preload to the bearing.
- the rotating portion of the rotational position detector is a disk magnetized in one direction perpendicular to the rotation axis.
- FIG. 1 is a sectional side view of a speed reducer-integrated actuator according to a first embodiment of the present invention.
- FIG. 2 is a sectional view of a reduction gear integrated type actuator showing a second embodiment of the present invention.
- FIG. 3 is a side sectional view showing a conventional reducer-integrated actuator.
- FIG. 1 is a sectional side view of a speed reducer-integrated actuator according to a first embodiment of the present invention.
- 1 is an actuator
- 2 is an actuator frame
- 3 is a load-side bracket
- 4 is a non-load-side bracket
- 5 is an output shaft
- 6 is a rotating shaft
- 7 is a motor
- 8 is a stator
- 9 is a stator.
- Stator core 10 is armature winding
- 1 is rotor
- 1 is rotating yoke
- 13 is permanent magnet
- 14 is harmonic reducer
- 15 is sacrificial spline
- 16 is flex spline
- 17 is a wave generator
- 18 is a housing
- 19, 20, 21, 22, and 23 are bearings
- 24 and 25 are elastic members
- 26 is a rotational position detector
- 27 is an angle detection magnet
- 28 is a fixing ring.
- Reference numeral 29 denotes a magnetic sensor, and denotes an axial length of the actuator 1.
- the basic configuration of the actuator according to the present invention a configuration including a motor reducer "! 4, an electric motor 7, a rotational position detector 26, and an output shaft 5 arranged on the load side as bearings 19,
- the configuration supported by 20 and the preload applied by the elastic member 24 is the same as the prior art, but the present invention is different in the following four points:
- the rotor 11 is formed integrally with a cup-shaped rotating yoke 12 provided so as to penetrate the rotating shaft 6 at the center, and the permanent magnet 13 is fixed to the outer periphery of the rotating yoke 12.
- the circular spline 15 is formed in a top hat shape, and the flange portion 15a of the circular line 15 is fixed to one end of the actuator frame 2. 5 is that the cylindrical portion 15b is arranged so as to face the inner periphery of the rotating yoke 12 via a gap,
- a cup-shaped housing 18 connected to the output shaft 5 is provided on the inner peripheral side of the flexspline 16 and the rotating shaft 6 is provided inside the housing 18.
- the bearing 21 to be supported is fitted to the rotating shaft 6, and the axial direction between the housing 18 and the bearing 21 is An elastic member 25 for applying a preload to the bearing 21 is provided in the gap of
- a disk-shaped angle detecting magnet 27 magnetized in one direction perpendicular to the rotating shaft 6 is provided, and the rotational position is provided on the outer peripheral side of the angle detecting magnet 27.
- a fixing ring 28 is provided as a fixing part of the detector 26, and at least two magnetic sensors 29 are provided in the circumferential direction of the fixing ring 28, that is, the rotational position detector is constituted by a magnetic encoder.
- the magnetic sensor 29 of the rotational position detector 26 uses a Hall effect element.
- FIG. 2 is a side sectional view of a reduction gear integrated type actuator showing a second embodiment. Since the second embodiment has the same components as the first embodiment, the same reference numerals are given. Further, the configuration and effects of the housing and the rotation position detector provided between the output shaft and the rotation shaft of the actuator are the same as those of the first embodiment, and therefore description thereof is omitted.
- the second embodiment differs from the first embodiment in the following two points. That is,
- the rotor 11 is composed of a rotating yoke 12 formed in the shape of a cup, and the permanent magnet 13 is fixed to the inner periphery of the rotating yoke 12 and the permanent magnet 13 is interposed between the permanent magnet 13 and the air gap. (With outer rotor)
- the sacrificial spline 15 is formed in a top hat shape, the flange 15a is fixed to one end of the actuator frame 1, and the cylindrical portion 15b is connected to the inner peripheral side of the stator 8. Points that are arranged to stick,
- the rotating yoke constituting the rotor is formed into a cup shape, and a space formed between the inner peripheral side of the rotating yoke and the rotating shaft is utilized.
- the harmonic reducer is arranged, and the motor consisting of the stator and the rotor is provided on the outer periphery of the harmonic reducer, so that the axial length of the harmonic reducer and the electric motor is They are arranged almost concentrically and overlapped.
- the space required for connecting the harmonic reducer and the electric motor in series in the axial direction is no longer required, and the space for storing these two devices can be shared by one space.
- the electric motor and the harmonic reducer can be provided on the inner periphery of the same actuator frame.
- the rotational position detector With such a configuration, the axial length of the entire actuator can be reduced. As a result, a compact and lightweight actuator can be provided.
- the actuator according to the present embodiment can reduce the number of parts to one as compared with an actuator that conventionally has an actuator frame composed of three parts, leading to a reduction in the number of assembly steps and Inexpensive factories can be provided.
- the rotating yoke of the rotor has a cup shape with a large outside diameter and a hollow portion, so that the actuator can be downsized in the axial direction and the torque can be increased.
- the driving torque can be increased without contradicting the reduction in size and weight.
- the elastic member for applying the preload between the bearings is not limited as long as the elastic member can be replaced by a plate panel or a coil panel.
- the magnetic sensor of the rotational position detector may use a magnetoresistive element or an amorphous wire using a magnetic impedance effect instead of the Hall effect element.
- the speed reducer-integrated actuator constituted by integrating the electric motor and the harmonic speed reducer according to the present invention is useful as, for example, a robot or a machine tool.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Mechanical Engineering (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
- Retarders (AREA)
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP00964702A EP1221755A4 (en) | 1999-10-05 | 2000-10-05 | OPERATOR WITH INTEGRATED REDUCTION GEAR |
US10/089,062 US6701803B1 (en) | 1999-10-05 | 2000-10-05 | Reduction gears-integrated actuator |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11/284400 | 1999-10-05 | ||
JP28440099A JP2001112215A (ja) | 1999-10-05 | 1999-10-05 | 減速機一体型アクチュエータ |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2001026203A1 true WO2001026203A1 (fr) | 2001-04-12 |
Family
ID=17678091
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2000/006966 WO2001026203A1 (fr) | 1999-10-05 | 2000-10-05 | Actionneur integre a un engrenage reducteur |
Country Status (7)
Country | Link |
---|---|
US (1) | US6701803B1 (ja) |
EP (1) | EP1221755A4 (ja) |
JP (1) | JP2001112215A (ja) |
KR (1) | KR100680152B1 (ja) |
CN (1) | CN1182642C (ja) |
TW (1) | TW486850B (ja) |
WO (1) | WO2001026203A1 (ja) |
Families Citing this family (42)
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JP2002243000A (ja) * | 2001-02-19 | 2002-08-28 | Harmonic Drive Syst Ind Co Ltd | 波動歯車減速機を備えたアクチュエータ |
DE10245663A1 (de) * | 2002-09-30 | 2004-04-08 | Robert Bosch Gmbh | Symmetrischer Antrieb für Wischerkomponenten |
JP4401229B2 (ja) * | 2004-04-23 | 2010-01-20 | 株式会社ハーモニック・ドライブ・システムズ | 波動歯車減速機を備えたアクチュエータ |
KR100798087B1 (ko) * | 2004-07-02 | 2008-01-28 | 혼다 기켄 고교 가부시키가이샤 | 감속기 장착 구동 장치 |
EP1764530B1 (en) | 2004-07-02 | 2012-03-28 | Honda Motor Co., Ltd. | Drive unit with speed reducer |
GB0618902D0 (en) * | 2006-09-25 | 2006-11-01 | Airbus Uk Ltd | Actuator |
JP4833028B2 (ja) * | 2006-11-01 | 2011-12-07 | 株式会社ハーモニック・ドライブ・システムズ | 波動歯車減速機を備えたアクチュエータ |
JP4560743B2 (ja) * | 2008-01-25 | 2010-10-13 | 株式会社デンソー | 回転式アクチュエータ |
US20100180696A1 (en) * | 2009-01-16 | 2010-07-22 | Delphi Technologies Inc. | Systems involving compact torque sensing |
CN102308459A (zh) * | 2009-04-21 | 2012-01-04 | 丰田自动车株式会社 | 具有变速功能的电动机 |
EP2476186A1 (en) * | 2009-09-09 | 2012-07-18 | ABB Research LTD | Drive assembly, industrial robot, robot boom and robot joint |
JP5403366B2 (ja) * | 2010-02-02 | 2014-01-29 | 株式会社安川電機 | 減速機付きモータ |
JP5764929B2 (ja) * | 2010-04-14 | 2015-08-19 | 株式会社安川電機 | 直動回転アクチュエータ |
JP4615621B1 (ja) * | 2010-06-22 | 2011-01-19 | 株式会社ツバキエマソン | 中空固定軸減速機 |
JP2012070558A (ja) * | 2010-09-24 | 2012-04-05 | Seiko Epson Corp | 電気機械装置およびそれを用いたアクチュエーター、モーター |
JP2012147541A (ja) * | 2011-01-11 | 2012-08-02 | Seiko Epson Corp | 電気機械装置およびそれを用いたアクチュエーター、モーター、ロボット、ロボットハンド。 |
ITMI20111098A1 (it) * | 2011-06-17 | 2012-12-18 | Micromeccanica Di Prec E S R L | Dispositivo elettromeccanico per la regolazione di guide di trasportatori ad aria |
JP5445546B2 (ja) * | 2011-09-22 | 2014-03-19 | 株式会社安川電機 | 回転電機 |
US9293962B2 (en) | 2012-03-30 | 2016-03-22 | Korea Institute Of Machinery & Materials | Hollow driving module |
TWM441059U (en) * | 2012-06-13 | 2012-11-11 | Harmonic Innovation Technology Co Ltd | Flexspline mounting structure of harmonic drive reducer |
CN103807295A (zh) * | 2012-11-06 | 2014-05-21 | 优必胜(上海)精密轴承制造有限公司 | 一种机器人用柔性薄壁球轴承 |
US9325229B2 (en) * | 2013-03-15 | 2016-04-26 | Hamilton Sundstrand Corporation | Generator architecture with PMG exciter and main field rotating power converter |
DE102014007956A1 (de) * | 2014-05-26 | 2015-11-26 | Audi Ag | Rotationsdämpfer |
DE102014220110A1 (de) * | 2014-10-02 | 2016-04-07 | Schunk Gmbh & Co. Kg Spann- Und Greiftechnik | Greif- oder Schwenkeinheit |
US10581298B2 (en) * | 2015-08-07 | 2020-03-03 | Kabushiki Kaisha Yaskawa Denki | Robot arm apparatus and actuator |
KR101755943B1 (ko) * | 2015-12-15 | 2017-07-07 | 현대자동차주식회사 | 역구동성이 향상된 하모닉 감속기, 그를 포함하는 구동 모듈 및 구동 모듈을 제어하는 방법 |
JP6739205B2 (ja) * | 2016-03-30 | 2020-08-12 | 日本電産株式会社 | 回転アクチュエータおよびロボット |
CN106224488B (zh) * | 2016-08-31 | 2018-08-28 | 四川福德机器人股份有限公司 | 一种内置电动机的一体化谐波减速机装置 |
JP2018084268A (ja) * | 2016-11-22 | 2018-05-31 | Ntn株式会社 | 電動アクチュエータ |
JP2018126032A (ja) | 2017-02-03 | 2018-08-09 | 日本電産トーソク株式会社 | 電動アクチュエータ |
US11264865B2 (en) * | 2017-02-28 | 2022-03-01 | Sony Corporation | Actuator |
JP6819411B2 (ja) | 2017-03-30 | 2021-01-27 | 日本電産トーソク株式会社 | 電動アクチュエータ |
JP2018179252A (ja) * | 2017-04-20 | 2018-11-15 | 日本電産シンポ株式会社 | 波動歯車減速機ユニット及びそれを備えた動力ユニット |
JP6939185B2 (ja) | 2017-07-25 | 2021-09-22 | 日本電産トーソク株式会社 | 電動アクチュエータ |
US10844944B2 (en) * | 2017-08-25 | 2020-11-24 | Hamilton Sunstrand Corporation | Inverted harmonic gear actuator |
JP7069673B2 (ja) | 2017-12-06 | 2022-05-18 | 日本電産トーソク株式会社 | 電動アクチュエータ |
JP2019118195A (ja) | 2017-12-27 | 2019-07-18 | 日本電産トーソク株式会社 | 電動アクチュエータ、回転制御機構 |
CN110380555B (zh) * | 2019-07-27 | 2020-11-17 | 朱幕松 | 谐波减速无铁芯无刷永磁电机 |
WO2022108635A1 (en) * | 2020-08-12 | 2022-05-27 | Joby Aero, Inc. | Compact offset outrunner harmonic drive rotary actuator and deployment system using same |
KR102644986B1 (ko) * | 2020-10-28 | 2024-03-07 | 주식회사 아모텍 | 액추에이터 |
KR102634286B1 (ko) * | 2020-12-24 | 2024-02-06 | 주식회사 아모텍 | Bldc 모터를 구비한 구동모터 및 이를 이용한 스위블 액추에이터 |
KR102654827B1 (ko) * | 2021-03-26 | 2024-04-04 | 주식회사 아모텍 | Bldc 모터를 구비한 구동모터 및 이를 이용한 스위블 액추에이터 |
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JPS60132166U (ja) * | 1984-02-15 | 1985-09-04 | 株式会社安川電機 | 減速機付アウタ−ロ−タ形モ−タ |
JPH01127349U (ja) * | 1988-02-24 | 1989-08-31 | ||
JPH0454462U (ja) * | 1990-09-12 | 1992-05-11 |
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-
1999
- 1999-10-05 JP JP28440099A patent/JP2001112215A/ja active Pending
-
2000
- 2000-10-04 TW TW089120684A patent/TW486850B/zh active
- 2000-10-05 US US10/089,062 patent/US6701803B1/en not_active Expired - Lifetime
- 2000-10-05 KR KR1020027004410A patent/KR100680152B1/ko not_active IP Right Cessation
- 2000-10-05 CN CNB008157782A patent/CN1182642C/zh not_active Expired - Fee Related
- 2000-10-05 EP EP00964702A patent/EP1221755A4/en not_active Withdrawn
- 2000-10-05 WO PCT/JP2000/006966 patent/WO2001026203A1/ja active IP Right Grant
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60132166U (ja) * | 1984-02-15 | 1985-09-04 | 株式会社安川電機 | 減速機付アウタ−ロ−タ形モ−タ |
JPH01127349U (ja) * | 1988-02-24 | 1989-08-31 | ||
JPH0454462U (ja) * | 1990-09-12 | 1992-05-11 |
Also Published As
Publication number | Publication date |
---|---|
CN1390378A (zh) | 2003-01-08 |
TW486850B (en) | 2002-05-11 |
KR100680152B1 (ko) | 2007-02-07 |
US6701803B1 (en) | 2004-03-09 |
JP2001112215A (ja) | 2001-04-20 |
CN1182642C (zh) | 2004-12-29 |
EP1221755A1 (en) | 2002-07-10 |
KR20020038799A (ko) | 2002-05-23 |
EP1221755A4 (en) | 2008-07-30 |
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