WO2008004715A1 - Torsion beam axle having connecting tube between torsion beam and trailing arm - Google Patents
Torsion beam axle having connecting tube between torsion beam and trailing arm Download PDFInfo
- Publication number
- WO2008004715A1 WO2008004715A1 PCT/KR2006/002620 KR2006002620W WO2008004715A1 WO 2008004715 A1 WO2008004715 A1 WO 2008004715A1 KR 2006002620 W KR2006002620 W KR 2006002620W WO 2008004715 A1 WO2008004715 A1 WO 2008004715A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- torsion beam
- connecting tube
- trailing arm
- axle
- torsion
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G21/00—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces
- B60G21/02—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces permanently interconnected
- B60G21/04—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces permanently interconnected mechanically
- B60G21/05—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces permanently interconnected mechanically between wheels on the same axle but on different sides of the vehicle, i.e. the left and right wheel suspensions being interconnected
- B60G21/051—Trailing arm twist beam axles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G11/00—Resilient suspensions characterised by arrangement, location or kind of springs
- B60G11/18—Resilient suspensions characterised by arrangement, location or kind of springs having torsion-bar springs only
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G7/00—Pivoted suspension arms; Accessories thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G7/00—Pivoted suspension arms; Accessories thereof
- B60G7/02—Attaching arms to sprung part of vehicle
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G7/00—Pivoted suspension arms; Accessories thereof
- B60G7/04—Buffer means for limiting movement of arms
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2200/00—Indexing codes relating to suspension types
- B60G2200/20—Semi-rigid axle suspensions
- B60G2200/21—Trailing arms connected by a torsional beam, i.e. twist-beam axles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2204/00—Indexing codes related to suspensions per se or to auxiliary parts
- B60G2204/40—Auxiliary suspension parts; Adjustment of suspensions
- B60G2204/43—Fittings, brackets or knuckles
- B60G2204/4307—Bracket or knuckle for torsional springs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2206/00—Indexing codes related to the manufacturing of suspensions: constructional features, the materials used, procedures or tools
- B60G2206/01—Constructional features of suspension elements, e.g. arms, dampers, springs
- B60G2206/20—Constructional features of semi-rigid axles, e.g. twist beam type axles
Definitions
- the present invention relates, in general, to a torsion beam axle, and more particularly, to a torsion beam axle having connecting tubes for reinforcing coupling force between a torsion beam and trailing arms.
- a torsion beam axle is a kind of suspension system that connects the wheels to the chassis in a vehicle, and includes a plurality of trailing arms that are coupled to the rear (or front) wheels and the chassis, and a torsion beam that connects the trailing arms.
- the torsion beam axle has major technical problems in that it must enable good performance of an independent suspension system by implementing a torsion beam having a concurrent torsion characteristic when torsion occurs between the left-hand wheel and the right-hand wheel and simultaneously secure trunk space and price competitiveness, and in that it must make the chassis light by means of an optimized design of the torsion beam.
- the trailing arms are generally made of cast iron in order to improve the supporting force of the left- and right-hand wheels, while the torsion beam is made of steel in order to easily absorb torsion between the left- and right-hand wheels to facilitate elastic torsion deformation during traveling.
- the torsion beam axle must secure sufficient coupling strength between the trailing arms and the torsion beam in the manufacturing process so as to meet load requirements.
- the method of coupling the different materials between the trailing arms and the torsion beam is becoming an important problem.
- the coupling method has used fastening elements such as a bolt and nut.
- fastening elements such as a bolt and nut.
- the coupling between the trailing arms and the torsion beam has been easy to damage.
- Friction- welding in which the trailing arms and the torsion beam are coupled by rotational contact, has been proposed.
- expensive equipment has been required, which weakens competitiveness from the aspect of production cost. Disclosure of Invention Technical Problem
- the present invention has been made in an effort to solve the problems occurring in the related art, and an object of the present invention is to provide a torsion beam axle capable of improving coupling force between each trailing arm and a torsion beam, wherein the trailing arm and the torsion beam make use of different materials.
- a torsion beam axle which includes a torsion beam, a trailing arm having a material different from that of the torsion beam, and a connecting tube having a material better than that of the trailing arm with respect to weldability with the torsion beam, and integrally coupled to the trailing arm at one end part thereof, and welded to the torsion beam at the other end part thereof.
- the connecting tube may be inserted into and integrally coupled to the trailing arm at the one end part in the process of casting the trailing arm.
- the connecting tube may have a slot for increasing the coupling force with the trailing arm at one end part thereof.
- the connecting tube may have an outer diameter large enough to be inserted into the torsion beam at the other end part.
- the connecting tube may be press-fitted into the torsion beam at the other end part.
- the torsion beam may be made of the same material as the connecting tube.
- the trailing arm may be made of cast iron or aluminum alloy, and the torsion beam and the connecting tube may be made of steel.
- the trailing arms and the torsion beam which make use of different materials are coupled via the connecting tubes that are integrally coupled with the trailing arms, so that the coupling force between the trailing arms and the torsion beam can be improved.
- the connecting tubes are welded with the torsion beam by using a material that is better than that of the trailing arms with respect to weldability with the torsion beam, so that the coupling force between the trailing arms and the torsion beam can be improved.
- FIG. 1 is a perspective view showing a torsion beam axle according to a first embodiment of the present invention
- FIG. 2 is a plan view of the torsion beam axle of FIG. 1 ;
- FIG. 3 is a partially enlarged sectional view taken along the line A-A of FIG. 2;
- FIGS. 4 and 5 are perspective and front views showing the connecting tube of FIG.
- FIG. 6 is a partial perspective view for explaining a process of coupling the trailing arms and the torsion beam of FIG. 2;
- FIG. 7 is a partially enlarged plan view for explaining a process of coupling the trailing arms and the torsion beam of FIG. 2;
- FIG. 8 is a perspective view showing a torsion beam axle according to a second embodiment of the present invention.
- FIG. 9 is a partial perspective view for explaining a process of coupling the trailing arms and the torsion beam of FIG. 8. Best Mode for Carrying Out the Invention
- a torsion beam axle 100 includes a torsion beam 110 and a plurality of trailing arms 120 coupled to opposite ends of the torsion beam 110.
- the torsion beam 110 has a continuous tubular shape, in which the cross section of an intermediate portion thereof is curved in a U or V shape, and a cross section of each end thereof is circular. This continuous tubular shape allows the middle of the torsion beam 110 to easily undergo elastic torsion deformation.
- the torsion beam 110 is typically manufactured by hydro-forming a hollow tube having a circular cross section under a predetermined pressure.
- the torsion beam 110 makes use of a material such as steel.
- Each trailing arm 120 includes chassis couplers 121 coupled with a chassis, and wheel couplers 122 coupled with wheels, and is fixedly coupled to the torsion beam 110 via a connecting tube 130, which will be described below.
- each trailing arm 120 makes use of a high strength material, generally cast iron, so as to be highly resistant to deformation under external force from the chassis or wheels, unlike the torsion beam 110, or high-strength aluminum alloy, in consideration of the weight of the chassis.
- the torsion beam axle 100 when different magnitudes of external force are applied from the opposite front (or rear) wheels, the external force can absorbed through torsion deformation of the torsion beam 110, and simultaneously the wheels and chassis can be firmly supported by the trailing arms 120.
- the torsion beam axle 100 further includes the connecting tubes 130 serving as a medium of connection between the torsion beam 110 and the trailing arms 120.
- Each connecting tube 130 has one end (the right-hand side in FIG. 3) inserted into and integrally coupled to each trailing arm 120, and the other end (the left-hand side in FIG. 3) inserted into the torsion beam 110 and welded to the torsion beam 110 through an overlapping joint 133.
- each connecting tube 130 is inserted into a casting mold of each trailing arm
- each connecting tube 130 when each trailing arm 120 is cast, partially protrudes from the casting mold on one side thereof, and is integrally coupled with each trailing arm 120 in the process in which molten cast iron is poured into and solidified in the casting mold in the protruding state.
- the other end of each connecting tube 130 can be provided with a plurality of slots 131 (see FIGS. 4 and 5).
- the coupling between each connecting tube 130 and each trailing arm 120 is not limited to casting, and may include welding, bolting, and the like.
- each connecting tube 130 makes use of a material that is better than that of each trailing arm 120 with respect to weldability with the torsion beam 110.
- each connecting tube 130 is made of the same material as the torsion beam 110, for instance, steel.
- the cast iron has a melting point higher than that of steel, each connecting tube 130 can be integrally coupled with the cast iron without deformation even though it is inserted into the casting mold and is contacted with the molten cast iron in the process of casting each trailing arm 120.
- FIGS. 4 and 5 show only each connecting tube 130 which is separated from the other components in FIG. 2 or 3.
- the shown connecting tube 130 may have a different shape when inserted in the process of casting each trailing arm 120. Even in this case, after the casting is completed, the connecting tube 130 is finished in the shape shown in FIGS. 4 and 5.
- the connecting tube 130 preferably has an outer diameter that is uniform enough to be inserted into the torsion beam 110, but it is not limited to this construction.
- the connecting tube 130 may be finished to have an outer diameter such that at least the other end thereof that is coupled to the torsion beam 110 can be inserted into the torsion beam 110.
- the connecting tube 130 preferably has an outer diameter press-fitted into the torsion beam 110 so as to reinforce the coupling force with the torsion beam 110.
- the other end 132 of the connecting tube 130 is tapered, as shown in FIGS. 4 and 5, so that the connecting tube 130 can be easily press-fitted into the torsion beam 110.
- the connecting tube 130 is subjected to the coupling force by being welded together with the coupling force by frictional force resulting from the press-fitting, thus increasing the overall coupling force with the torsion beam 110.
- each connecting tube 130 is integrally coupled with each trailing arm 120 in the casting process, and is then welded with the torsion beam 110
- the torsion beam 110 can be rotated in the state in which each connecting tube 130 is inserted into the corresponding end of the torsion beam 110, as shown in FIG. 6.
- the shear center C of the torsion beam 110 can be positioned.
- FIG. 7 shows a step of welding a connecting tube 130 with a torsion beam 110, a shear center C of which is adjusted by rotation.
- FIG. 8 shows a torsion beam axle 200 according to a second embodiment of the present invention.
- the torsion beam axle 200 includes a torsion beam 210, and a plurality of trailing arms 120 coupled to opposite ends of the torsion beam 210, and connecting tubes (130 of FIG. 9) serving as a medium of coupling between the torsion beam 210 and each trailing arm 120.
- connecting tubes 130 of FIG. 9
- the torsion beam 210 is manufactured by rolling a rectangular steel plate to weld opposite ends of the rolled steel plate which are in contact with each other, and cuts out part of an intermediate portion thereof to form an opening 211.
- the intermediate portion of the torsion beam 210 is readily susceptible to deformation due to the opening 211.
- each connecting tube 130 which are integrally coupled with the trailing arms 120, can be applied in the same way as in the first embodiment, even though the cutout type torsion beam 210 is used.
- each connecting tube 130 is inserted into the cutout type torsion beam 210, and then positions the shearing center C thereof while rotating the torsion beam 210. Then, each connecting tube 130 is welded with the torsion beam 210.
- the cross sections of the torsion beam and each connecting tube are not limited to circles, but they may have shapes such as a polygon, an ellipse, etc. if necessary. Even in this case, the connecting tubes of the present invention can still be applied.
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/994,819 US7862059B2 (en) | 2006-07-04 | 2006-07-05 | Torsion beam axle having connecting tube between torsion beam and trailing arm |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR10-2006-0062343 | 2006-07-04 | ||
KR1020060062343A KR100663927B1 (en) | 2006-07-04 | 2006-07-04 | Torsion beam axle having connecting tube between torsion beam and trailing arm |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2008004715A1 true WO2008004715A1 (en) | 2008-01-10 |
Family
ID=37866693
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/KR2006/002620 WO2008004715A1 (en) | 2006-07-04 | 2006-07-05 | Torsion beam axle having connecting tube between torsion beam and trailing arm |
Country Status (4)
Country | Link |
---|---|
US (1) | US7862059B2 (en) |
KR (1) | KR100663927B1 (en) |
CN (1) | CN101479122A (en) |
WO (1) | WO2008004715A1 (en) |
Cited By (10)
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---|---|---|---|---|
DE102009019320A1 (en) * | 2009-04-30 | 2010-11-04 | GM Global Technology Operations, Inc., Detroit | Compound steering rear axle for motor vehicle, has two semi-trailing arms for support of wheel carriers, which is bend-rigidly by transverse profile and is connected in torsion-flexible manner |
CN102083643A (en) * | 2008-06-19 | 2011-06-01 | Zf腓特烈港股份公司 | Stabilizer for a utility vehicle |
WO2011088554A1 (en) | 2010-01-20 | 2011-07-28 | Magna International Inc. | Bi-metallic component and method of making the same |
WO2012031956A1 (en) * | 2010-09-07 | 2012-03-15 | Schmitz Cargobull Ag | Axle tube for an axle assembly of a commercial vehicle and axle assembly for a commercial vehicle |
WO2013034372A1 (en) * | 2011-09-09 | 2013-03-14 | Zf Friedrichshafen Ag | Method for producing a trailing arm of a twist beam axle in which a drive unit of an electrical drive close to the wheel, comprising an electrical engine and a transmission, is integrated |
EP2639089A1 (en) * | 2012-03-12 | 2013-09-18 | Austem Co. Ltd. | Torsion beam axle having ring member friction-welded to trailing arm |
DE102012017119A1 (en) * | 2012-08-29 | 2014-03-06 | GM Global Technology Operations LLC (n. d. Gesetzen des Staates Delaware) | Rear axle i.e. torsion beam trailing arm axle, for motor car, has transverse strut and control arm projection elements molded into one another and connected with one another, where strut projection element is designed as tube element |
DE102012017110A1 (en) * | 2012-08-29 | 2014-03-06 | GM Global Technology Operations LLC (n. d. Ges. d. Staates Delaware) | Twist-beam rear axle for motor car, has strut approach and wheel approach elements that are firmly connected with each other along longitudinal axis, where link between elements is formed by adapting electromagnetic pulse technology |
DE102014101979B3 (en) * | 2014-02-17 | 2014-12-11 | Benteler Automobiltechnik Gmbh | Connecting arrangement and method for producing a connection arrangement and motor vehicle component |
EP2815905A1 (en) * | 2013-06-21 | 2014-12-24 | Hyundai Wia Corporation | Rear suspension mounting structure for electric vehicle |
Families Citing this family (17)
Publication number | Priority date | Publication date | Assignee | Title |
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US8496258B2 (en) * | 2003-10-20 | 2013-07-30 | Magna International Inc. | Hybrid component |
CA2676404C (en) | 2007-02-06 | 2016-06-07 | Magna International Inc. | Capacitor discharge weld for connecting tubular twist beam profiles to cast trailing arm via adapter ring |
WO2008122107A1 (en) * | 2007-04-06 | 2008-10-16 | Magna International Inc. | Stress reducing inner sleeve for twist beam and associated method |
ITTO20070872A1 (en) * | 2007-12-03 | 2009-06-04 | Sistemi Sospensioni Spa | HYBRID ARM FOR REAR SUSPENSION WITH INDEPENDENT WHEELS FOR MOTOR VEHICLES |
CN101830155B (en) * | 2010-05-21 | 2012-09-05 | 奇瑞汽车股份有限公司 | Adjustable toein torsion beam suspension and forming method thereof |
KR20130037502A (en) * | 2011-10-06 | 2013-04-16 | 지엠 글로벌 테크놀러지 오퍼레이션스 엘엘씨 | Rear axle suspension of automobiles |
JP5904785B2 (en) | 2011-12-27 | 2016-04-20 | 株式会社アーレスティ | Casting structure for vehicle parts and casting mold |
JP6136523B2 (en) * | 2013-04-23 | 2017-05-31 | スズキ株式会社 | Torsion beam suspension |
US10138966B2 (en) * | 2014-03-11 | 2018-11-27 | Nissin Kogyo Co., Ltd. | Vehicle brake apparatus |
DE102014105904A1 (en) * | 2014-04-28 | 2015-10-29 | Benteler Automobiltechnik Gmbh | Twist-beam axle and method for producing a torsion profile |
US10202014B2 (en) | 2014-07-18 | 2019-02-12 | Magna International Inc. | Twist beam axle assembly and method of manufacturing same |
DE102015210006B4 (en) * | 2015-06-01 | 2020-08-06 | Zf Friedrichshafen Ag | Twist beam axle for a vehicle |
FR3044600B1 (en) * | 2015-12-08 | 2019-11-22 | Renault S.A.S. | "METHOD OF REALIZING A REAR AXLE OF A MOTOR VEHICLE BY FREQUENCING A TRAVERSE IN AN ARM" |
JP2017192965A (en) * | 2016-04-20 | 2017-10-26 | 本田技研工業株式会社 | Insert member and method for manufacturing same |
DE102018207811A1 (en) | 2018-05-17 | 2019-11-21 | Volkswagen Aktiengesellschaft | Rigid axle and motor vehicle with such a rigid axle |
KR102025400B1 (en) * | 2018-11-21 | 2019-09-25 | 주식회사 체시스 | Friction stir welding apparatus and dissimilar metal welding method thereof |
US11745797B1 (en) * | 2022-12-02 | 2023-09-05 | Shanghai Linghuo Trading Co., Ltd. | Adjustable front axle and a vehicle having same |
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JPH08216639A (en) * | 1995-02-13 | 1996-08-27 | Daihatsu Motor Co Ltd | Structure of trailing arm type suspension |
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JP2005262903A (en) * | 2004-03-16 | 2005-09-29 | Daihatsu Motor Co Ltd | Torsion beam type suspension structure |
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- 2006-07-05 US US11/994,819 patent/US7862059B2/en not_active Expired - Fee Related
- 2006-07-05 CN CNA2006800551830A patent/CN101479122A/en active Pending
- 2006-07-05 WO PCT/KR2006/002620 patent/WO2008004715A1/en active Application Filing
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JPH0557417A (en) * | 1991-08-30 | 1993-03-09 | Toyoda Gosei Co Ltd | Method for casting metal |
JPH08216639A (en) * | 1995-02-13 | 1996-08-27 | Daihatsu Motor Co Ltd | Structure of trailing arm type suspension |
US6047978A (en) * | 1997-02-27 | 2000-04-11 | Toyota Jidosha Kabushiki Kaisha | Wheel suspension by trailing arms and torsion beam assembled by welding with means for relieving weld seam from high stress |
US6298962B1 (en) * | 1998-03-13 | 2001-10-09 | Showa Denko K.K. | Member for arm |
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Cited By (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102083643A (en) * | 2008-06-19 | 2011-06-01 | Zf腓特烈港股份公司 | Stabilizer for a utility vehicle |
DE102009019320A1 (en) * | 2009-04-30 | 2010-11-04 | GM Global Technology Operations, Inc., Detroit | Compound steering rear axle for motor vehicle, has two semi-trailing arms for support of wheel carriers, which is bend-rigidly by transverse profile and is connected in torsion-flexible manner |
WO2011088554A1 (en) | 2010-01-20 | 2011-07-28 | Magna International Inc. | Bi-metallic component and method of making the same |
US9782856B2 (en) | 2010-01-20 | 2017-10-10 | Magna International Inc. | Bi-metallic component and method of making the same |
US8905118B2 (en) | 2010-01-20 | 2014-12-09 | Magna International Inc. | Bi-metallic component and method of making the same |
EP2525929A4 (en) * | 2010-01-20 | 2017-06-28 | Magna International Inc. | Bi-metallic component and method of making the same |
WO2012031956A1 (en) * | 2010-09-07 | 2012-03-15 | Schmitz Cargobull Ag | Axle tube for an axle assembly of a commercial vehicle and axle assembly for a commercial vehicle |
US9038707B2 (en) | 2011-09-09 | 2015-05-26 | Zf Friedrichshafen Ag | Method for producing a trailing arm of a twist beam axle in which a drive unit of an electrical drive close to the wheel, comprising an electrical engine and a transmission, is integrated |
WO2013034372A1 (en) * | 2011-09-09 | 2013-03-14 | Zf Friedrichshafen Ag | Method for producing a trailing arm of a twist beam axle in which a drive unit of an electrical drive close to the wheel, comprising an electrical engine and a transmission, is integrated |
EP2639089A1 (en) * | 2012-03-12 | 2013-09-18 | Austem Co. Ltd. | Torsion beam axle having ring member friction-welded to trailing arm |
DE102012017119A1 (en) * | 2012-08-29 | 2014-03-06 | GM Global Technology Operations LLC (n. d. Gesetzen des Staates Delaware) | Rear axle i.e. torsion beam trailing arm axle, for motor car, has transverse strut and control arm projection elements molded into one another and connected with one another, where strut projection element is designed as tube element |
DE102012017110A1 (en) * | 2012-08-29 | 2014-03-06 | GM Global Technology Operations LLC (n. d. Ges. d. Staates Delaware) | Twist-beam rear axle for motor car, has strut approach and wheel approach elements that are firmly connected with each other along longitudinal axis, where link between elements is formed by adapting electromagnetic pulse technology |
US8998230B2 (en) | 2013-06-21 | 2015-04-07 | Hyundai Wia Corporation | Rear suspension mounting structure for electric vehicle |
EP2815905A1 (en) * | 2013-06-21 | 2014-12-24 | Hyundai Wia Corporation | Rear suspension mounting structure for electric vehicle |
DE102014101979B3 (en) * | 2014-02-17 | 2014-12-11 | Benteler Automobiltechnik Gmbh | Connecting arrangement and method for producing a connection arrangement and motor vehicle component |
Also Published As
Publication number | Publication date |
---|---|
US7862059B2 (en) | 2011-01-04 |
KR100663927B1 (en) | 2007-01-05 |
US20100127470A1 (en) | 2010-05-27 |
CN101479122A (en) | 2009-07-08 |
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