EP3794720A1 - Accouplement frontal magnétique pour la transmission de couples - Google Patents

Accouplement frontal magnétique pour la transmission de couples

Info

Publication number
EP3794720A1
EP3794720A1 EP19726601.8A EP19726601A EP3794720A1 EP 3794720 A1 EP3794720 A1 EP 3794720A1 EP 19726601 A EP19726601 A EP 19726601A EP 3794720 A1 EP3794720 A1 EP 3794720A1
Authority
EP
European Patent Office
Prior art keywords
coupling
coupling half
turning
magnetic face
magnetic
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP19726601.8A
Other languages
German (de)
English (en)
Inventor
Uwe Vollmer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kardion GmbH
Original Assignee
Kardion GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kardion GmbH filed Critical Kardion GmbH
Publication of EP3794720A1 publication Critical patent/EP3794720A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K49/00—Dynamo-electric clutches; Dynamo-electric brakes
    • H02K49/10—Dynamo-electric clutches; Dynamo-electric brakes of the permanent-magnet type
    • H02K49/104—Magnetic couplings consisting of only two coaxial rotary elements, i.e. the driving element and the driven element
    • H02K49/108—Magnetic couplings consisting of only two coaxial rotary elements, i.e. the driving element and the driven element with an axial air gap

Definitions

  • the present invention relates to a magnetic face-turning coupling for transmitting torques.
  • magnetic couplings are known in which concentrically arranged magnets or magnet pairs are used to transmit torques without contact.
  • a diverter can be used to guide the magnetic flux, increasing the transmissible torque and increasing efficiency.
  • the two coupling parts rotate in this case by a few degrees against each other.
  • a counter-torque is generated in the stationary position at the level of the torque applied from the outside.
  • the object of the invention is to provide a magnetic face-turning coupling in which the ratio of transmittable torque to installation space is improved in such a way that greater torque can be transmitted with a given installation space than with a magnetic coupling which is one of the has the above-described designs.
  • a magnetic face-turning coupling according to the invention serves for the transmission of torques.
  • This transmission of torques can be done, for example, from one shaft to another shaft.
  • a magnetic front rotary coupling according to the invention has a first coupling half, which is connectable to a first axis and a second coupling half, which is connectable to a second axis.
  • the first coupling half has a first permanent magnet, which has the magnetic configuration of a Halbach arrangement.
  • the permanent magnet can be formed in particular by a Halbach arrangement.
  • a permanent magnet having the magnet configuration of a Halbach arrangement is understood to mean a permanent magnet in which the magnetic flux density on one side, the so-called weak side, is small because the magnetic flux is substantially canceled there, and on another side, the so-called strong side, because the magnetic flux is amplified there.
  • Haibach arrangement is understood to mean arrangements of magnets, as described under the link https://en.wikipedia.org/wiki/Halbach_array, to which reference is made and its disclosure in the description of this invention is fully involved.
  • the magnet configuration of a Halbach arrangement can be formed by permanent magnetic segments which are assembled and their magnetization direction relative to each other by 90 ° with respect to a preferred direction, e.g. is tilted with respect to the direction of a longitudinal axis of the arrangement. In this way, a page-dependent flow amplification can be achieved.
  • a page-dependent flow amplification can be achieved.
  • the face-turning coupling thus advantageously achieves that the magnetic flux can be concentrated without further magnet-flux-conducting arrangements. This in turn leads to a reduction of the required total volume or, alternatively, to a reduction of the magnet volume or, for the same magnet volume, allows the same magnetic flux without additional constructive measures, such as, for example, B. magnetic conclusions.
  • the torque is thus greater with the same space than in conventional arrangements with a return of the magnetic flux.
  • the magnet volume can be reduced while maintaining the same torque.
  • the face-turning coupling may be a coupling of a cardiac assisting system, in particular a pump of such a system.
  • the second coupling half is axially magnetized. This can be done with or without magnetic inference. As a result, the magnetic field is advantageously guided axially from the second coupling half to the first coupling half, which ensures that a force acting between the first and second coupling halves is greater than in the case of non-axial magnetization of the second coupling half.
  • first and second coupling halves can be interchanged.
  • the second coupling half has a second permanent magnet, which has a Halbach arrangement, in particular a Halbach arrangement.
  • the second coupling half is particularly preferably identical to the first coupling half.
  • the magnetization of the first coupling half and the second coupling half point in the same direction and are equal according to a still further preferred embodiment.
  • the first coupling half and the second coupling half face the front side. It is preferred if the distance of the first and second Coupling half is as low as possible. This feature advantageously ensures that the magnetic forces acting between the first and second coupling halves are as large as possible.
  • the first axis can be connected to a driving shaft and the second axis can be connected to a driven-off shaft. This feature advantageously achieves that a torque of the driving shaft can be transmitted to the driving shaft.
  • the first coupling half and the second coupling half are arranged coaxially.
  • the first coupling half and the second coupling half face each other.
  • a strong side of the half-axial arrangement of the first coupling half and / or the second coupling half to the respective other coupling half In the event that both the first and the second coupling half permanent magnets, each having a Halbach arrangement, it is further preferred that both the strong side of the Halbach arrangement of the first coupling half and the strong side of the Halbach Arrangement of the second coupling half lie on the respective end face of the coupling halves.
  • an end face of a coupling half is understood to mean that side which lies closer to the respective other coupling half.
  • the first coupling half and the second coupling half each have 2n segments or 2n + 1 segments, where n is an integer greater than or equal to 1.
  • each segment of the first coupling half which preferably has one polarity, faces a corresponding segment of the second coupling half, which has an opposite polarity.
  • At least one of the first coupling half and the second coupling half has a round or annular shape.
  • the first or second coupling half has or is a round or ring magnet.
  • Such a shape is very practical for the present application where torque is transmitted by means of shafts.
  • the first coupling half and the second coupling half each have a disk magnet.
  • Such a shape is very practical for the present application, where torque is transmitted using shafts.
  • a radius of the first coupling half is equal to a radius of the second coupling half.
  • an axial length of the first coupling half is equal to an axial length of the second coupling half.
  • the first coupling half and the second coupling half each have the same number and the same arrangement. Furthermore, it is preferred that the coupling parts of the coupling halves lie symmetrically to a plane between the first coupling half and the second coupling half. This has the advantage of a simple structure with optimal field distribution of the magnetic field.
  • the magnetization direction of the first coupling half and / or the second coupling half preferably extends along an axial direction at least in a region remote from an axial axis.
  • the magnetization direction points in the same direction both in the first coupling half and in the second coupling half. This has the advantage that a strong power coupling between the coupling halves can be achieved.
  • the coupling parts can each be arranged on a shaft.
  • the coupling parts can be arranged on a carrier on the rear side of the coupling halves.
  • FIG. 1 A shows a magnetic face-turning coupling according to a first exemplary embodiment of the invention in a side view
  • FIG. 1B is a front view of the magnetic face-turning coupling of Fig. 1A along a sectional plane
  • 2A shows a magnetic face-turning coupling according to a further exemplary embodiment of the invention in a side view
  • FIG. 2B is a front view of the magnetic face turning coupling of FIG.
  • FIG. 3A shows a magnetic face-turning coupling according to a further exemplary embodiment of the invention in a side view
  • FIG. 3B is a front view of the magnetic face-turning coupling of FIG.
  • Fig. 4A is a magnetic face-turning coupling according to yet another
  • Embodiment of the invention in a side view is a front view of the magnetic face-turning coupling of FIG.
  • Fig. 5A is a magnetic face-turning coupling according to yet another
  • Embodiment of the invention in a side view
  • FIG. 5B is a front view of the magnetic face-turning coupling of FIG.
  • FIG. 5A shows a sectional view taken along line aA in FIG. 5B
  • FIG. 6A shows a magnetic face-turning coupling according to the embodiment of FIGS. 5A and 5B in a side view, the view of FIG. 6A being a sectional view along the line bB of FIG. 6B
  • Fig. 6B is a front view of the magnetic face-turning coupling of Fig. 6A
  • FIG. 1A shows a magnetic face-turning coupling 100 for transmitting torques in accordance with an embodiment of the invention in a side view.
  • the face-turning coupling 100 has a first coupling half 102, which can be connected to a first axis, and a second coupling half 104, which can be connected to a second axis.
  • the first coupling half 102 has a first permanent magnet 106, which has the magnetic configuration of a Flalbach arrangement.
  • the second coupling half 104 has a second permanent magnet 108, which has the magnetic configuration of a Flalbach arrangement.
  • the first coupling half 102 and the second coupling half 104 are arranged symmetrically to a plane of symmetry 110, which is arranged in the middle between the first coupling half 102 and the second coupling half 104 and runs along the y-axis.
  • the first coupling half 102 has three coupling parts 111, 112 and 113, which are magnetized and which form the first permanent magnet 106.
  • the coupling parts 111, 112 and 113 are segments of the permanent magnet which are different with magnetizations whose direction.
  • the second Coupling half 104 also has three coupling parts 1 14, 1 15 and 1 16, which are also magnetized and which form the second permanent magnet 108.
  • the coupling parts 14, 15 and 16 are segments of the second permanent magnet 108, which have magnetizations with different directions.
  • the first coupling half 102 has the same dimensions as the second coupling half 104.
  • the first coupling half 102 and the second coupling half 104 are each round and rotate when used as intended about the x-axis, which is centered by the first coupling half 102 and the second Coupling half 104 runs.
  • FIG. 1B shows a front view which shows the magnetic face-turning coupling 100 along the sectional plane marked by the dashed line 105 from the right. One sees the second coupling half 104, while the first coupling half 102 is covered by the second coupling half 104.
  • the coupling parts 1 1 1 and 1 14 have the same magnetization, which runs in the direction of the negative x-axis.
  • the coupling parts 1 13 and 1 16 have the same magnetization, which runs in the direction of the positive x-axis.
  • the coupling parts 1 12 and 1 15 have opposite magnetizations, wherein the coupling part 1 12 extends along the y-axis and the coupling part 1 15 along the negative y-axis.
  • the three coupling parts 1 1 1, 1 12 and 1 13 of the first coupling half 102 form a Flalbach arrangement.
  • the first permanent magnet 106 thus has the magnet configuration of a Flalbach arrangement.
  • a Flalbach arrangement with only three segments is the smallest possible Flalbach arrangement.
  • the three coupling parts 1 14, 1 15 and 1 16 of the second coupling half 104 also form a Flalbach arrangement.
  • the second permanent magnet 108 therefore also has the magnet configuration of a Flalbach arrangement.
  • the direction of magnetization of the coupling part 112 with respect to the magnetization of the coupling part 111 is tilted by 90 ° about an axis perpendicular to the x and y axes shown there.
  • the magnetization of the coupling part 113 is tilted by 90 ° relative to the magnetization of the coupling part 112 about an axis perpendicular to the x and y axes and is tilted by 180 ° relative to the magnetization of the coupling part 111 to this axis.
  • the direction of magnetization of the coupling part 115 with respect to the magnetization of the coupling part 114 is tilted by 90 ° about an axis perpendicular to the x and y axes shown there.
  • the magnetization of the coupling part 116 is tilted by 90 ° relative to the magnetization of the coupling part 115 about an axis perpendicular to the x- and y-axis and tilted with respect to the magnetization of the coupling part 111 by 180 ° to this axis.
  • the magnetized coupling parts 111 and 113 of the first coupling half 102 which is shown on the left side in FIG. 1A, together cause a magnetic field pointing downwards on the right side of the first coupling half 102 and on the left side of the first one Coupling half 102 points upward.
  • the coupling part 112 of the first coupling half 102 causes a magnetic field which, in the view of FIG. 1A, points downward on the right-hand side of the first coupling half 102 and also points downward on the left-hand side of the first coupling half 102.
  • the right-hand side of the first coupling half 102 results in an amplification of the magnetic field components which originate on the one hand from the coupling part 112 and on the other hand from the coupling parts 111 and 113, and for the left side of the first coupling half 102 a mutual weakening of the magnetic field parts, which originate on the one hand from the coupling part 112 and on the other hand from the coupling parts 111 and 113.
  • the magnetic field on the right side of the first coupling half 102 is larger than on the left side thereof.
  • the strong side of the Flalbach arrangement of the first Permanent magnet 106 ie, the side of the Halbach arrangement on which the magnetic field is strong, so is in the view of FIG. 1A right of the first coupling half 102 and the weak side of the Halbach arrangement of the first permanent magnet 106, ie that side of the Halbach arrangement, on which the magnetic field is weak, so is left of the first coupling half.
  • the magnetic field on the right side of the second clutch half 104 is weak and strong on the left side of the second clutch half 104.
  • the strong side of the Halbach arrangement of the second permanent magnet 108 i. that side of the Halbach arrangement on which the magnetic field is strong is therefore in the view of FIG. 1A to the left of the second coupling half 104 and the weak side of the Halbach arrangement of the second permanent magnet 108, i. that side of the Halbach arrangement on which the magnetic field is weak is therefore on the right of the second coupling half 104.
  • the total magnetic field between the first coupling half 102 and the second coupling half 104 is strong and the total magnetic field outside the first coupling half 102 and the second coupling half 104 is weak. This results in a strong coupling between the first coupling half 102 and the second coupling half 104.
  • FIG. 2A shows a magnetic face-turning coupling 100 for transmitting torque according to a further embodiment of the invention in a side view.
  • FIG. 2B shows a front view of the magnetic face-turning coupling according to FIG. 2A along a sectional plane.
  • both the first coupling half 102 and the second coupling half 104 each have a non-magnetic mounting plate 130.
  • FIG. 3A shows a magnetic face-turning coupling 100 for transmitting torques in accordance with yet another exemplary embodiment of the invention in a side view.
  • FIG. 3B shows a front view of the magnetic face-turning coupling according to FIG. 3A along a sectional plane.
  • the embodiment of FIGS. 3A and 3B differs from the embodiment of FIGS. 2A and 2B in that both the mounting plate 130 of the first coupling half 102 and the mounting plate 130 of the second half 104 are each connected to a shaft.
  • the mounting plate 130 of the first coupling half 102 is connected to a driving shaft 132 and the mounting plate 130 of the second coupling half 104 is connected to a driven shaft 134.
  • FIGS. 3A and 3B differs from the embodiment of FIGS. 3A and 3B in that both the driving shaft 132 and the driven shaft 134 are directly connected to the respective magnets of the first coupling half 102 and the second coupling half 104 is.
  • FIG. 5A shows a magnetic face-turning coupling 100 for transmitting torques according to yet another embodiment of the Invention in a side view.
  • FIG. 5B shows a front view of the magnetic face-turning coupling according to FIG. 5A.
  • the view of Fig. 5A is a sectional view taken along the line aA.
  • the embodiment of Figs. 5A and 5B differs from the embodiment of Figs. 1A and 1B in that the face rotating coupling 100 is bipolar.
  • the first coupling half 102 and the second coupling half 104 each have four segments.
  • Figs. 6A and 6B the same embodiment of Figs. 5A and 5B is shown, but Fig. 6A shows a section along the line bB.
  • FIG. 7B shows a first coupling half 102 of a magnetic end-rotation coupling 100 for transmitting torques in accordance with a further exemplary embodiment of the invention in a side view.
  • 7A and 7C each show a front view of the second coupling half 102 of the magnetic face-turning coupling according to FIG.
  • Fig. 7A shows a view from the left
  • Fig. 7C shows a view from the right.
  • the first coupling half 102 is in this case a four-pole variant with a total of five segments, wherein on an inner side, d. H. the side facing away from the front side, the first coupling half 102 a ring magnet is attached as a segment and half of the first coupling half 102 on the front side has four segments.
  • the magnetic face-turning clutch 100 for transmitting torque has two facing such coupling halves.
  • a magnetic face-turning coupling 100 for the transmission of torques comprises a first coupling half 102, which can be connected to a first axis; and has a second coupling half 104, which is connectable to a second axis.
  • the first coupling half 102 includes a first permanent magnet 106 having the magnet configuration of a Halbach arrangement.
  • Magnetic face-turning coupling (100) for transmitting torque comprising:
  • a first coupling half (102) connectable to a first axis
  • a second coupling half (104) connectable to a second axis
  • first coupling half (102) comprises a first permanent magnet (106) having a Halbach arrangement.
  • Magnetic face-turning coupling (100) according to clause 1, characterized in that the second coupling half (104) is axially magnetized.
  • Magnetic face-turning coupling (100) according to clause 1, characterized in that the second coupling half (104) has a second permanent magnet (108) which has a Halbach arrangement.
  • Magnetic face-turning coupling (100) according to one of the preceding clauses, characterized in that the first coupling half (102) and the second coupling half (104) face each other frontally.
  • Magnetic face-turning coupling (100) according to one of the preceding clauses, characterized in that the first axis with a driving shaft (132) and the second axis with a driven shaft (134) are connectable.
  • Magnetic face-turning coupling (100) according to one of the preceding clauses characterized in that the first coupling half (102) and the second coupling half (104) are arranged coaxially.
  • Magnetic face-turning coupling (100) according to one of the preceding clauses characterized in that the magnetic field of the first and / or second coupling half is unipolar or Mopolproig.
  • Magnetic face-turning coupling (100) according to one of the preceding clauses characterized in that the first coupling half (102) and the second coupling half (104) each have 2n segments, where n is an integer greater than or equal to 1.
  • Magnetic face-turning coupling (100) according to one of the preceding clauses characterized in that the first coupling half (102) and the second coupling half (104) each have a disk magnet.
  • Magnetic face-turning coupling (100) according to one of the preceding clauses characterized in that a radius of the first coupling half (102) is equal to a radius of the second coupling half (104).
  • Magnetic face-turning coupling (100) according to one of the preceding clauses, characterized in that the first coupling half (102) and / or the second coupling half (104) each have at least two coupling parts (111, 112, 113, 114, 115, 116) ,

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Dynamo-Electric Clutches, Dynamo-Electric Brakes (AREA)

Abstract

Accouplement frontal magnétique (100) pour la transmission de couples comprenant une première moitie d'accouplement (102), laquelle peut être connectée à un premier axe, et comprenant une deuxième moitie d'accouplement (104), laquelle peut être connectée à un deuxième axe. La première moitie d'accouplement (102) comprend un premier aimant permanent (106), lequel a la configuration d'aimant d'un agencement Halbach.
EP19726601.8A 2018-05-16 2019-05-16 Accouplement frontal magnétique pour la transmission de couples Withdrawn EP3794720A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102018207575.1A DE102018207575A1 (de) 2018-05-16 2018-05-16 Magnetische Stirndreh-Kupplung zur Übertragung von Drehmomenten
PCT/EP2019/062748 WO2019219885A1 (fr) 2018-05-16 2019-05-16 Accouplement frontal magnétique pour la transmission de couples

Publications (1)

Publication Number Publication Date
EP3794720A1 true EP3794720A1 (fr) 2021-03-24

Family

ID=66655315

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19726601.8A Withdrawn EP3794720A1 (fr) 2018-05-16 2019-05-16 Accouplement frontal magnétique pour la transmission de couples

Country Status (5)

Country Link
US (1) US20210384812A1 (fr)
EP (1) EP3794720A1 (fr)
CN (1) CN112567610A (fr)
DE (1) DE102018207575A1 (fr)
WO (1) WO2019219885A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018201030A1 (de) 2018-01-24 2019-07-25 Kardion Gmbh Magnetkuppelelement mit magnetischer Lagerungsfunktion
DE102018207611A1 (de) 2018-05-16 2019-11-21 Kardion Gmbh Rotorlagerungssystem
DE102018211327A1 (de) 2018-07-10 2020-01-16 Kardion Gmbh Laufrad für ein implantierbares, vaskuläres Unterstützungssystem
DE102020102474A1 (de) 2020-01-31 2021-08-05 Kardion Gmbh Pumpe zum Fördern eines Fluids und Verfahren zum Herstellen einer Pumpe
DE102021200979A1 (de) 2021-02-03 2022-08-04 Festo Se & Co. Kg Linearaktuator

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6841910B2 (en) * 2002-10-02 2005-01-11 Quadrant Technology Corp. Magnetic coupling using halbach type magnet array
DE102008011858B4 (de) * 2008-02-29 2009-12-24 Gebrüder Frei GmbH & Co. KG Vorrichtung zur Dämpfung einer Drehbewegung
UA97202C2 (en) * 2010-11-05 2012-01-10 Константин Витальевич Паливода Magnetic clutch
CN102545538A (zh) * 2012-02-20 2012-07-04 上海电机学院 Halbach盘式磁力耦合器
US20170343043A1 (en) * 2014-05-12 2017-11-30 Raymond James Walsh Radial-loading Magnetic Reluctance Device

Also Published As

Publication number Publication date
WO2019219885A1 (fr) 2019-11-21
US20210384812A1 (en) 2021-12-09
DE102018207575A1 (de) 2019-11-21
CN112567610A (zh) 2021-03-26

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