WO2005111454A1 - Magnetorheologische kupplung mit lamellenbändern - Google Patents
Magnetorheologische kupplung mit lamellenbändern Download PDFInfo
- Publication number
- WO2005111454A1 WO2005111454A1 PCT/AT2005/000165 AT2005000165W WO2005111454A1 WO 2005111454 A1 WO2005111454 A1 WO 2005111454A1 AT 2005000165 W AT2005000165 W AT 2005000165W WO 2005111454 A1 WO2005111454 A1 WO 2005111454A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- yokes
- primary
- magnetorheological
- lamellar
- yoke
- Prior art date
Links
Classifications
-
- 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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D37/00—Clutches in which the drive is transmitted through a medium consisting of small particles, e.g. centrifugally speed-responsive
- F16D37/02—Clutches in which the drive is transmitted through a medium consisting of small particles, e.g. centrifugally speed-responsive the particles being magnetisable
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05Y—INDEXING SCHEME RELATING TO HINGES OR OTHER SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS AND DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION, CHECKS FOR WINGS AND WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
- E05Y2201/00—Constructional elements; Accessories therefore
- E05Y2201/20—Brakes; Disengaging means, e.g. clutches; Holders, e.g. locks; Stops; Accessories therefore
- E05Y2201/21—Brakes
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05Y—INDEXING SCHEME RELATING TO HINGES OR OTHER SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS AND DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION, CHECKS FOR WINGS AND WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
- E05Y2201/00—Constructional elements; Accessories therefore
- E05Y2201/20—Brakes; Disengaging means, e.g. clutches; Holders, e.g. locks; Stops; Accessories therefore
- E05Y2201/25—Force or torque adjustment therefore
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05Y—INDEXING SCHEME RELATING TO HINGES OR OTHER SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS AND DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION, CHECKS FOR WINGS AND WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
- E05Y2201/00—Constructional elements; Accessories therefore
- E05Y2201/20—Brakes; Disengaging means, e.g. clutches; Holders, e.g. locks; Stops; Accessories therefore
- E05Y2201/252—Brakes; Disengaging means, e.g. clutches; Holders, e.g. locks; Stops; Accessories therefore characterised by type of friction
- E05Y2201/254—Fluid or viscous friction
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05Y—INDEXING SCHEME RELATING TO HINGES OR OTHER SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS AND DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION, CHECKS FOR WINGS AND WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
- E05Y2400/00—Electronic control; Power supply; Power or signal transmission; User interfaces
- E05Y2400/10—Electronic control
- E05Y2400/20—Electronic control of brakes, disengaging means, holders or stops
- E05Y2400/202—Force or torque control
- E05Y2400/21—Force or torque control by controlling the viscosity
-
- 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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D37/00—Clutches in which the drive is transmitted through a medium consisting of small particles, e.g. centrifugally speed-responsive
- F16D2037/004—Clutches in which the drive is transmitted through a medium consisting of small particles, e.g. centrifugally speed-responsive characterised by multiple substantially axial gaps in which the fluid or medium consisting of small particles is arranged
Definitions
- the invention relates to a magnetorheological clutch, consisting of a stationary part, a rotating primary part with primary lamellar belts and a coaxially rotating secondary part with secondary lamellar belts, a working space containing a magnetorheological fluid being formed in the primary lamella belts between the primary and secondary parts and alternate secondary lamellar belts in succession in the radial direction, and wherein a controllable magnetic field acts on the magnetorheological fluid.
- a magnetorheological clutch consisting of a stationary part, a rotating primary part with primary lamellar belts and a coaxially rotating secondary part with secondary lamellar belts, a working space containing a magnetorheological fluid being formed in the primary lamella belts between the primary and secondary parts and alternate secondary lamellar belts in succession in the radial direction, and wherein a controllable magnetic field acts on the magnetorheological fluid.
- a generic coupling is known from EP 940 286 A2.
- the magnetic field is generated by a coil fixed to the housing. Due to the construction of the magnetic coil with its yoke, the field lines are relatively long, which reduces the active part of the magnetic field, that is, the part that acts on the magnetorheological fluid.
- the object of the invention is to improve a generic coupling in such a way that the highest possible torque can be transmitted in the smallest work space and with minimal power consumption.
- the other features also bring about a shortening and homogenization of the magnetic field lines, a maximization of their active part and a minimization of magnetic short circuit.
- the field lines run radially in one direction, are turned on the two second yokes and then run radially in the opposite direction.
- the flux density of the self-contained field lines is therefore largely constant.
- first yokes In order to summarize the first yokes in a compact manner and to enable quick assembly, they are combined with their magnetic coils to form a first yoke ring (claim 2). In order to further keep the eddy currents from forming in the yokes, they are composed of sheet metal or they consist of a sintered material of high magnetic permeability. This allows the magnetic field to be quickly built up and then dismantled again, which enables the rapid regulation required for electronic driving and braking aids.
- the first yokes can be non-rotatably connected to the primary part or alternatively to the secondary part and the second yoke to the secondary part or alternatively to the primary part. Because the cylindrical lamellar strips are connected to the primary or secondary part at one of their two edges, both arrangements are equally favorable.
- primary lamellar belts and secondary lamellar belts are arranged outside and inside the first yokes, and the second yokes have parallel and coaxial cylindrical surfaces facing the lamellar belts (claim 6).
- the first yoke ring is thus arranged approximately in the radial center between the lamellar bands, whereby the number of lamellar bands close to the generator of the magnetic field is doubled and the magnetic field is thus optimally utilized.
- the primary lamellar belts and secondary lamellar belts are arranged outside the first yokes and the inner second yoke is connected to the first yokes (claim 7). This arrangement is more favorable at very high speeds because the centrifugal force acting on the first yokes is smaller.
- the lamellar strips are made of a material of high magnetic permeability and have zones of low magnetic permeability which extend in the axial direction and are distributed over their circumference. These zones reduce the magnetic short circuit within the slat bands. These zones can consist of rows of successive holes (claim 9), which are preferably arranged such that the rows of successive holes are steep helical lines (claim 9). The rows are thus inclined at an acute angle to a generatrix of the cylinder jacket (which the lamellar strips form). This reduces torque irregularities.
- the first yokes and the inner second yoke are firmly connected to the housing, and the outer second yoke is connected to the secondary part and has on its inner side facing the lamellar belts parallel and coaxial cylindrical surfaces to the lamellar belts (claim 12) , Thanks to the first yokes fixed to the housing, no sliding contacts are required for the energy supply to the magnetic coils, but at the price of an air gap which, however, can be kept very small due to the arrangement according to the invention.
- the clutch has a very distant resemblance to an electric motor.
- FIG. 1 a longitudinal section of the coupling according to the invention in a first embodiment
- FIG. 2 a section according to II-II in FIG. 1
- FIG. 3 an axonometric view of FIG. 1
- FIG. 4 one Longitudinal section of the clutch according to the invention in a second embodiment
- Fig. 5 a section according to VV in Fig. 4
- Fig. 6 a longitudinal section of the clutch according to the invention in a third embodiment
- Fig. 7 a first embodiment of the multi-plate belts
- Fig. 8 a second embodiment of the slat belts.
- the clutch itself enables the controllable transmission of a torque from a primary part 3 with a primary shaft 5 to a secondary part 4.
- the primary part 3 is supported by a disk 6, which is connected to the primary shaft 5 in a rotationally fixed manner, from a material of low magnetic permeability, from a number of primary lamellar belts 7 and the generator of the controllable magnetic field to be described below.
- the primary lamellar belts 7 are each the jacket of a cylinder with the geometric axis 9, one edge 8 of which is firmly connected to the disk 6.
- the secondary part 4 can also be rotated about the axis 9, that is to say coaxially, it consists of a jacket 14 and end shields 15, 16 which encompass the primary part 3 and are sealed off from it by means of seals 13.
- the end shields 15, 16 also carry the bearings 17 in which the primary part 3 is guided with respect to the secondary part 4.
- the bearings of the secondary part in the housing 1 are not shown.
- the end shield 16 of the secondary part 4 consists at least partially of a material of low magnetic permeability, on which the cylindrical secondary lamellar strips 20 with their edges 18 are fixedly mounted.
- a working space 21 is formed between the primary part 3 and the secondary part 4, which contains a magnetorheological fluid and, in alternating order, primary lamellar bands 7 and secondary lamellar bands 20 of decreasing radii.
- a snap ring 22 or the like can be provided for the detachable connection of the other end plate 15 to the casing 14. 5
- first yokes 24 with magnetic coils 25 the winding axis of which is radial and which are reversed in the circumferential direction in succession.
- first yoke 24 with magnetic coil 10 25 in the circumferential direction is followed by a further first yoke 24 'with reversely polarized magnetic coil 25', and so on, which is why there is an even number of first yokes distributed over the circumference (see FIG . 2,3).
- the first yokes 24, 24 ' have outer cylindrical end faces 26, 15 of which the axis of rotation 9 is also the geometric axis of the cylinder.
- the space between the individual first yokes can be poured out with a material of low magnetic permeability or be combined in another way to form a closed ring 28, which is firmly connected to the disk 6 by its one-sided foot part 29.
- the power supply 33 from the sliding contact 2 to the magnet coils 25, 25 ' also takes place through this connection.
- the first yokes 24 also have inner cylindrical end faces 31, likewise with the axis of rotation 9 as the cylinder axis.
- two second yokes are provided, namely an outer second yoke 34 and an inner second yoke 37, both made of a material with high magnetic permeability.
- the outer second yoke 34 is a ring, which is preferably also the jacket of the secondary part and has an inner coaxial cylindrical surface 35 which is equidistant from the outermost plate band 7, 20 and limits the working space 21 to the outside.
- the inner second yoke 37 is non-rotatably connected to the bearing plate 16 of the secondary part 4 and has an outer coaxial cylindrical surface 38. Between the first yokes 24 and the inner second yoke 37 there are further pairs of lamellar belts 7 *, 20 *.
- the arrangement of magnetic coils and yokes described generates a magnetic field that is represented by the field lines 40, 40 ', 41, 42. 2 that magnetic coil 25 in the first yoke 24 generates radially outwardly leading field lines 40 which, after crossing the working space 21 and the lamellar belts 7, 20 in the outer second yoke 34, are deflected in such a way that they radially inwards pass leading field lines 40 '.
- both the first yokes 24 and the second yokes 34, 37 consist of plates which lie against one another and in whose plane the field lines run; or they consist of a material with high magnetic permeability and poor electrical conductivity.
- the difference differs in that the yoke ring 128 forms the inner boundary of the working space 121, that is, all primary and secondary lamellar belts 107, 120 outside.
- the first yokes 124 form one piece with the 5 inner second yoke 137 can be executed.
- the yoke ring 128 is connected in a rotationally fixed manner to the secondary part 104, which is why the power supply 133 also leads from the sliding contact 102 via the plates 115, 116 and the jacket 134 to the magnetic coils 125.
- the polarity of adjacent magnet coils 125, 10 125 ' is opposite.
- the inner second yoke 237 is again made in one piece with the first yokes 224.
- the transmissible torque in relation to the magnetic field strength is greater because the lamellar bands 207, 220 are at a greater distance from the axis of rotation 209.
- FIG. 7 shows two different embodiments of the zones of low magnetic permeability on a primary lamella band 7.
- the holes 50 are arranged along a line 52, which is a generatrix of the lamella belt 7 and parallel to the axis of rotation 9.
- Row 51 is a helix.
- FIG. 8 shows a primary lamellar band 107 and a secondary lamellar band 120, on which slots 150, 151 are provided instead of 30 of the rows of holes.
- the slot 150 is inclined at an acute angle 152 to the generatrix of the slat band 120.
- the slot 151 follows a helix, its course differs from that of the slot 150. In this way results at a differential speed between the primary part and the secondary part, an intersection moving in the direction of the axis 109.
- the zones of low magnetic permeability reduce or eliminate magnetic short circuits within the lamella bands.
- the moving intersection avoids the "siren effect" that occurs when there is a speed difference.
- the rows of holes or slots described are each distributed at certain intervals over the entire circumference of the lamellar belts, although only one row or one row is shown in FIGS. 7 and 8 Slot is shown.
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2007516867A JP2007538205A (ja) | 2004-05-17 | 2005-05-17 | 薄板バンドを備えた磁性流体クラッチ |
US11/579,987 US7828129B2 (en) | 2004-05-17 | 2005-05-17 | Magnetorheological clutch having lamination bands |
DE112005000977T DE112005000977A5 (de) | 2004-05-17 | 2005-05-17 | Magnetorheologische Kupplung mit Lamellenbändern |
CA002566843A CA2566843A1 (en) | 2004-05-17 | 2005-05-17 | Magnetorheological clutch with laminated strips |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT0035904U AT8304U1 (de) | 2004-05-17 | 2004-05-17 | Magnetorheologische kupplung mit lamellenbändern |
ATGM359/2004 | 2004-05-17 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005111454A1 true WO2005111454A1 (de) | 2005-11-24 |
Family
ID=34973154
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/AT2005/000165 WO2005111454A1 (de) | 2004-05-17 | 2005-05-17 | Magnetorheologische kupplung mit lamellenbändern |
Country Status (7)
Country | Link |
---|---|
US (1) | US7828129B2 (de) |
JP (1) | JP2007538205A (de) |
AT (1) | AT8304U1 (de) |
CA (1) | CA2566843A1 (de) |
DE (1) | DE112005000977A5 (de) |
RU (1) | RU2377454C2 (de) |
WO (1) | WO2005111454A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102006037992A1 (de) * | 2006-08-14 | 2008-02-21 | Magna Powertrain Ag & Co Kg | Bauteil mit Haltefunktion, Aufhaltesystem und Verfahren zu deren Betrieb |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8100238B2 (en) | 2007-07-16 | 2012-01-24 | Magna Powertrain Ag & Co Kg | Magnetorheological clutch |
US10024322B2 (en) | 2012-08-23 | 2018-07-17 | Pierburg Pump Technology Gmbh | Mechanical combustion-engine-driven fluid pump with a magneto-rheological multi-disk clutch |
US9976606B2 (en) | 2012-08-23 | 2018-05-22 | Pierburg Pump Technology Gmbh | Mechanical combustion-engine-driven fluid pump |
US9683616B2 (en) * | 2014-01-31 | 2017-06-20 | Bell Helicopter Textron Inc. | Magnetorheological rotorcraft actuator |
US10788085B2 (en) | 2014-01-31 | 2020-09-29 | Societe De Commercialisation Des Produits De La Recherche Appliquee Socpra Sciences Et Genie S.E.C. | Magnetorheological fluid clutch apparatus and control systems |
DE102015204691A1 (de) | 2015-03-16 | 2016-09-22 | Schaeffler Technologies AG & Co. KG | Magnetorheologische Kupplung mit herkömmlicher Kompression im Kompressionsraum |
DE102015204688A1 (de) | 2015-03-16 | 2016-09-22 | Schaeffler Technologies AG & Co. KG | Magnetorhelogische Kupplung mit Squeeze-Strengthen-Effekt im Kompressionsraum |
CN110159672A (zh) * | 2019-04-30 | 2019-08-23 | 西华大学 | 多极叠加式磁流变离合器 |
WO2024041813A1 (de) * | 2022-08-25 | 2024-02-29 | Inventus Engineering Gmbh | Vorrichtung mit einer magnetorheologischen übertragungseinrichtung |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB783060A (en) * | 1955-03-07 | 1957-09-18 | Elmeg | Improvements in or relating to magnetic couplings |
US3266606A (en) * | 1964-09-24 | 1966-08-16 | Sperry Rand Corp | Magnetic fluid clutch with laminated structure |
EP0940286A2 (de) | 1998-03-04 | 1999-09-08 | Borg-Warner Automotive, Inc. | Magnetorheologische Kupplungen für Antriebsstrangbauteile eines Kraftfahrzeugs |
Family Cites Families (20)
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GB191019786A (en) | 1910-02-14 | 1911-03-23 | Kurt Miram | Improvements in and relating to Electro-magnetic Clutches. |
US2543394A (en) * | 1949-04-16 | 1951-02-27 | Martin P Winther | Magnetic clutch |
US2709507A (en) * | 1950-04-21 | 1955-05-31 | Vickers Inc | Magnetic particle clutch |
US2615945A (en) * | 1950-09-20 | 1952-10-28 | Dynamatic Corp | Field control of electromagnetic couplings |
US2745527A (en) * | 1951-12-21 | 1956-05-15 | Eaton Mfg Co | Magnetic fluid mixture clutch |
US2818148A (en) * | 1954-03-26 | 1957-12-31 | Eaton Mfg Co | Magnetic fluid clutch with laminated rotor |
US3358798A (en) * | 1965-10-22 | 1967-12-19 | Lear Siegler Inc | Magnetic particle clutch |
JPS56138527A (en) | 1980-03-28 | 1981-10-29 | Hitachi Ltd | Exciting device for electromagnetic clutch |
US4682676A (en) * | 1984-10-26 | 1987-07-28 | Toyota Jidosha Kabushiki Kaisha | Electromagnetic powder clutch with two powder gaps |
DE69011570T2 (de) * | 1989-04-27 | 1995-04-06 | Eaton Corp | Elektroviskose Flüssigkeitskupplung. |
RU94015535A (ru) | 1994-05-13 | 1996-06-20 | Н.В. Решетцов | Электромагнитная муфта |
US5823309A (en) * | 1997-05-23 | 1998-10-20 | General Motors Corporation | Magnetorheological transmission clutch |
US5896965A (en) * | 1997-06-02 | 1999-04-27 | General Motors Corporation | Magnetorheological fluid fan clutch |
US5967273A (en) * | 1997-10-17 | 1999-10-19 | Eaton Corporation | Magneto-rheological fluid coupling |
CA2347527C (en) * | 2000-05-12 | 2005-04-12 | Auburn Gear, Inc. | Limited slip differential having magnetorheological fluid brake |
US6581739B1 (en) * | 2000-10-31 | 2003-06-24 | Eaton Corporation | Lightweight magnetic particle device |
AT6572U1 (de) | 2002-10-31 | 2003-12-29 | Magna Steyr Powertrain Ag & Co | Magnetorheologische kupplung |
US7240485B2 (en) * | 2003-04-07 | 2007-07-10 | Gm Global Technology Operations, Inc. | Power steering system |
US7232016B2 (en) * | 2003-12-08 | 2007-06-19 | General Motors Corporation | Fluid damper having continuously variable damping response |
JP2007535644A (ja) * | 2004-04-30 | 2007-12-06 | マグナ ドライブトレイン アクツィエン・ゲゼルシャフト ウント コンパニー コマンディート・ゲゼルシャフト | 磁性流体クラッチ |
-
2004
- 2004-05-17 AT AT0035904U patent/AT8304U1/de not_active IP Right Cessation
-
2005
- 2005-05-17 CA CA002566843A patent/CA2566843A1/en not_active Abandoned
- 2005-05-17 WO PCT/AT2005/000165 patent/WO2005111454A1/de active Application Filing
- 2005-05-17 JP JP2007516867A patent/JP2007538205A/ja not_active Ceased
- 2005-05-17 RU RU2006144858/11A patent/RU2377454C2/ru not_active IP Right Cessation
- 2005-05-17 DE DE112005000977T patent/DE112005000977A5/de not_active Withdrawn
- 2005-05-17 US US11/579,987 patent/US7828129B2/en not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB783060A (en) * | 1955-03-07 | 1957-09-18 | Elmeg | Improvements in or relating to magnetic couplings |
US3266606A (en) * | 1964-09-24 | 1966-08-16 | Sperry Rand Corp | Magnetic fluid clutch with laminated structure |
EP0940286A2 (de) | 1998-03-04 | 1999-09-08 | Borg-Warner Automotive, Inc. | Magnetorheologische Kupplungen für Antriebsstrangbauteile eines Kraftfahrzeugs |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102006037992A1 (de) * | 2006-08-14 | 2008-02-21 | Magna Powertrain Ag & Co Kg | Bauteil mit Haltefunktion, Aufhaltesystem und Verfahren zu deren Betrieb |
Also Published As
Publication number | Publication date |
---|---|
CA2566843A1 (en) | 2005-11-24 |
US20080135367A1 (en) | 2008-06-12 |
RU2377454C2 (ru) | 2009-12-27 |
US7828129B2 (en) | 2010-11-09 |
DE112005000977A5 (de) | 2007-06-28 |
JP2007538205A (ja) | 2007-12-27 |
RU2006144858A (ru) | 2008-06-27 |
AT8304U1 (de) | 2006-05-15 |
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