EP1041589B1 - Inductive transmission device - Google Patents
Inductive transmission device Download PDFInfo
- Publication number
- EP1041589B1 EP1041589B1 EP00105453A EP00105453A EP1041589B1 EP 1041589 B1 EP1041589 B1 EP 1041589B1 EP 00105453 A EP00105453 A EP 00105453A EP 00105453 A EP00105453 A EP 00105453A EP 1041589 B1 EP1041589 B1 EP 1041589B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- primary
- transmission device
- inductive transmission
- transmitter
- ferromagnetic material
- 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.)
- Expired - Lifetime
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F38/00—Adaptations of transformers or inductances for specific applications or functions
- H01F38/18—Rotary transformers
Definitions
- the invention relates to an inductive transformer, in particular a rotary transformer, for signal and / or energy transmission between movable components according to the preamble of the main claim.
- a bidirectional data transmission between steering column and steering wheel with simultaneous energy transfer from the steering column to the steering wheel be possible.
- the energy transfer can be about 1 W, if only the steering wheel electronics must be supplied and an additional 120 W, if a steering wheel heating to be supplied.
- a winding spring for data transmission and a slip ring for energy transmission is provided in such cases.
- an inductive transmitter for transmitting measurement data and / or electrical energy between two mutually movable components with a primary and a secondary transformer part with the features specified in the characterizing part of claim 1 advantageously developed because in the area between the primary and the secondary transformer part a flexible or sliding ferromagnetic material is attached.
- the transformer according to the invention has an apron of flexible ferromagnetic material which almost completely encloses the gap between the primary and the secondary transformer part.
- the transformers or transformers arise as a rule, openings between the two transformer halves and thus a non-negligible Ausstrahl Anlagenkeit of electromagnetic radiation, the disturbances, for example in an application in a motor vehicle.
- the manufacturing and assembly-related openings are sealed in a simple manner with a magnetic apron.
- the inductively coupling coils are in this embodiment, for example, a rotary transformer, with one another within predetermined limits mechanical play each other movable.
- the magnetic skirt which is preferably made of silicone or an elastomer with similar properties and with embedded ferromagnetic powder is slipped over the core of the abutment and attached.
- the primary core is brought through the apron in the secondary core. Since the inner diameter of the skirt is smaller than the outer diameter of the secondary core, no electromagnetic radiation can escape to the outside.
- the flexible ferromagnetic material is a bearing shell, on which the primary and / or the secondary transmission part is slidably guided with a given within predetermined mechanical play, with a gap between the primary and the secondary transformer part almost completely through the bearing shell is completed.
- the transmitter parts can be arranged rotationally symmetrical to each other in an advantageous manner, wherein at least one transformer part is rotatable.
- the above-described game between the transmission parts is required in this application as clearance compensation between the steering column and the steering shaft.
- the efficiency of the transformer is increased, however, if the resulting gap is reduced.
- a part of the transformer provided with a sliding sheathing or apron or in that the entire transmitter is floatingly mounted in a bearing shell of sliding material such as plastic, optimizes the electrical transmission without restricting the mechanical function.
- the sliding plastic of the bearing shell is enriched here with a ferromagnetic material, so that the field line profile is improved by the plastic.
- a steering column 10 is shown, which is part of a steering device, not shown here and not explained in detail for a motor vehicle.
- the end of a steering shaft 11 is rotatable by means of a steering wheel, wherein the steering shaft 11 is rotatably supported on the steering column 10 which is fixedly connected to the chassis of the vehicle.
- a rotary transformer 12 is arranged with the measurement data and / or electrical energy between, for example, arranged on the steering shaft 11 sensors and a central evaluation unit in the vehicle can be transmitted.
- a primary transformer part 13 with a coil 14 and an associated core and a secondary transformer part 15 with a coil 16 and an associated core are formed.
- the primary transformer part 13 is fixed to the steering column 10 and the secondary transformer part 15 is rotatably arranged with the steering shaft 11.
- an apron 17 made of flexible ferromagnetic material, for example made of silicone or an elastomer with similar properties and with embedded ferromagnetic powder, is present on the transformer 12, the gap between the primary 13 and the secondary Transformer part 15 almost completely encloses.
- transformers 12 on a steering device arise in the rule openings through the production and assembly-related bearing clearance, in particular between the two coils 14 and 16 and thus a non-negligible Ausstrahlschitzkeit of electromagnetic radiation, which can lead to disturbances in the motor vehicle.
- the above-described openings are easily sealed with the magnetic skirt 17.
- the core of the primary transmission part 13 is then brought through the skirt 17 in the region of the secondary transmission part 15. If the inner diameter of the skirt 17 is smaller than the outer diameter of the secondary core, no electromagnetic radiation can escape to the outside.
- a bearing shell 20 is arranged on which the primary and / or the secondary transmission part 13, 15 can be guided in a sliding manner with a mechanical clearance present within predetermined limits, a gap between the primary and the secondary transmission part 13 and 15 almost completely filled by the bearing shell 20.
- the same components are here provided with the same reference numerals, in Figure 3, an enlarged section A of the bearing shell 20 between the primary transformer part 13 and the secondary transformer part 15 is shown.
- the game described above between the transformer parts 13 and 15 is also to be considered in this embodiment, since a clearance compensation between the steering column and the steering shaft is always required here.
- the efficiency of the transformer 12 is at both embodiments thereby increases that the gap resulting from the game is reduced.
- the sliding plastic of the bearing shell 20 is also enriched here with a ferromagnetic material.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Steering Controls (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
- Power Steering Mechanism (AREA)
- Near-Field Transmission Systems (AREA)
Description
Die Erfindung betrifft einen induktiven Übertrager, insbesondere einen Drehübertrager, zur Signal- und/oder Energieübertragung zwischen beweglichen Bauteilen nach dem Oberbegriff des Hauptanspruchs.The invention relates to an inductive transformer, in particular a rotary transformer, for signal and / or energy transmission between movable components according to the preamble of the main claim.
Es stellt sich bei der elektrischen Signal- und Energieübertragung, beispielsweise an beweglichen Teilen in einem Kraftfahrzeug in Verbindung mit an den beweglichen Teilen angebrachten Sensoren, häufig die Aufgabe, trotz mechanischer Führungsprobleme eine sichere und trotzdem flexible elektrische Kopplung zwischen den beweglichen Teilen herzustellen. Beispielsweise bei Lenkwinkelsensoren zur Detektierung des Drehwinkels eines Lenkrades sind zwischen der drehbaren Lenkspindel und der feststehenden Lenksäule erhebliche Montage- und Lagetoleranzen im mm-Bereich vorhanden.It turns in the electrical signal and energy transmission, for example, on moving parts in a motor vehicle in conjunction with mounted on the moving parts sensors, often the task despite mechanical management problems to produce a secure, yet flexible electrical coupling between the moving parts. For example, in steering angle sensors for detecting the rotation angle of a steering wheel considerable assembly and position tolerances in the mm range are present between the rotatable steering shaft and the fixed steering column.
Häufig soll hier z.B. eine bidirektionale Datenübertragung zwischen Lenksäule und Lenkrad bei gleichzeitiger Energieübertragung von der Lenksäule zum Lenkrad möglich sein. Die Energieübertragung kann bei ca. 1 W liegen, wenn nur die Lenkradelektronik versorgt werden muss und bei zusätzlichen 120 W, wenn eine Lenkradheizung versorgt werden soll. In herkömmlicher Weise wird in solchen Fällen eine Wickelfeder zur Datenübertragung und ein Schleifring zur Energieübertragung vorgesehen. Die Wikkelfeder und der Schleifringe haben jedoch prinzipiell einen relativ hohen Geräuschpegel und verursachen gleichzeitigen sog. EMV-Probleme (EMV = Elektro-Magnetische-Verträglichkeit).Frequently, here for example a bidirectional data transmission between steering column and steering wheel with simultaneous energy transfer from the steering column to the steering wheel be possible. The energy transfer can be about 1 W, if only the steering wheel electronics must be supplied and an additional 120 W, if a steering wheel heating to be supplied. In a conventional manner, a winding spring for data transmission and a slip ring for energy transmission is provided in such cases. However, the winding spring and the slip rings have in principle a relatively high noise level and at the same time cause so-called EMC problems (EMC = electro-magnetic compatibility).
In der
Gemäß der Erfindung wird ein induktiver Übertrager zur Übertragung von Messdaten und/oder elektrischer Energie zwischen zwei gegeneinander beweglichen Bauteilen mit einem primären und einem sekundären Übertragerteil mit den im Kennzeichen des Anspruchs 1 angegebenen Mitteln in vorteilhafter Weise weitergebildet, da im Bereich zwischen dem primären und dem sekundären Übertragerteil ein flexibles oder gleitendes ferromagnetisches Material angebracht ist.According to the invention, an inductive transmitter for transmitting measurement data and / or electrical energy between two mutually movable components with a primary and a secondary transformer part with the features specified in the characterizing part of claim 1 advantageously developed because in the area between the primary and the secondary transformer part a flexible or sliding ferromagnetic material is attached.
Bei einer ersten vorteilhaften Ausführungsform weist der erfindungsgemäße Übertrager eine Schürze aus flexiblem ferromagnetischen Material auf, die den Spalt zwischen dem primären und dem sekundären Übertragerteil nahezu vollständig umschließt. Beim Aufbau von solchen Übertragern bzw. Transformatoren ergeben sich in der Regel Öffnungen zwischen den beiden Übertragerhälften und somit eine nicht zu vernachlässigende Ausstrahlmöglichkeit von elektromagnetischen Strahlen, die zu Störungen, beispielsweise bei einer Anwendung in einem Kraftfahrzeug, führen können. Gemäß der Erfindung werden die fertigungs- und montagebedingten Öffnungen auf einfache Weise mit einer magnetischen Schürze abgedichtet.In a first advantageous embodiment, the transformer according to the invention has an apron of flexible ferromagnetic material which almost completely encloses the gap between the primary and the secondary transformer part. In the construction of such transformers or transformers arise as a rule, openings between the two transformer halves and thus a non-negligible Ausstrahlmöglichkeit of electromagnetic radiation, the disturbances, for example in an application in a motor vehicle. According to the invention, the manufacturing and assembly-related openings are sealed in a simple manner with a magnetic apron.
Die induktiv koppelnden Spulen sind bei dieser Ausführungsform, beispielsweise eines Drehübertragers, mit einem in vorgegebenen Grenzen vorhandenen mechanischem Spiel zueinander beweglich. Bei der Montage wird beispielsweise die magnetische Schürze, die vorzugsweise aus Silikon oder einem Elastomer mit ähnlichen Eigenschaften und mit eingebettetem ferromagnetischen Pulver hergestellt ist über den Kern des Sekundärteils gestülpt und befestigt. Der Primärkern wird durch die Schürze in den Sekundärkern gebracht. Da der Innendurchmesser der Schürze kleiner als der Außendurchmesser des Sekundärkerns ist, kann keine elektromagnetisch Strahlung nach außen dringen.The inductively coupling coils are in this embodiment, for example, a rotary transformer, with one another within predetermined limits mechanical play each other movable. During assembly, for example, the magnetic skirt, which is preferably made of silicone or an elastomer with similar properties and with embedded ferromagnetic powder is slipped over the core of the abutment and attached. The primary core is brought through the apron in the secondary core. Since the inner diameter of the skirt is smaller than the outer diameter of the secondary core, no electromagnetic radiation can escape to the outside.
Bei einer anderen vorteilhaften Ausführungsform ist das flexible ferromagnetische Material eine Lagerschale, an der das primäre und/oder das sekundäre Übertragerteil gleitend mit einem in vorgegebenen Grenzen vorhandenen mechanischem Spiel führbar ist, wobei ein Spalt zwischen dem primären und dem sekundären Übertragerteil nahezu vollständig durch die Lagerschale ausgefüllt wird. Auch hier können in vorteilhafter Weise die Übertragerteile rotationssymetrisch zueinander angeordnet sein, wobei mindestens ein Übertragerteil drehbeweglich ist.In another advantageous embodiment, the flexible ferromagnetic material is a bearing shell, on which the primary and / or the secondary transmission part is slidably guided with a given within predetermined mechanical play, with a gap between the primary and the secondary transformer part almost completely through the bearing shell is completed. Again, the transmitter parts can be arranged rotationally symmetrical to each other in an advantageous manner, wherein at least one transformer part is rotatable.
Eine vorteilhafte Anwendung ergibt sich insbesondere, wenn das eine rotationssymetrisches Übertragerteil an der Lenkspindel eines Fahrzeuges und das andere rotationssymetrisches Übertragerteil an der Lenksäule eines Fahrzeuges angebracht ist, I wobei dann auf einfache Weise über die Übertragerteile eine Messdaten- und/oder Energieübertragung durchführbar ist.An advantageous application is obtained in particular when the one rotationally symmetrical transformer part is attached to the steering spindle of a vehicle and the other rotationally symmetrical transformer part is attached to the steering column of a vehicle, wherein a measurement data and / or energy transmission can then be carried out in a simple manner via the transmission parts.
Das oben beschriebene Spiel zwischen den Übertragerteilen ist bei dieser Anwendung als Spielausgleich zwischen der Lenksäule und der Lenkspindel erforderlich. Der Wirkungsgrad des Übertragers wird jedoch erhöht, wenn die dadurch entstehende Lücke verringert wird. Erfindungsgemäß wird dadurch, dass ein Teil des Übertragers mit einer gleitenden Ummantelung bzw. Schürze versehen oder dadurch, dass der gesamte Übertrager schwimmend in einer Lagerschale aus gleitendem Material wie Kunststoff gelagert ist, die elektrische Übertragung optimiert ohne die mechanische Funktion einzuschränken. Der gleitende Kunststoff der Lagerschale ist auch hier mit einem ferromagnetischen Material angereichert, so dass der Feldlinienverlauf durch den Kunststoff verbessert wird.The above-described game between the transmission parts is required in this application as clearance compensation between the steering column and the steering shaft. The efficiency of the transformer is increased, however, if the resulting gap is reduced. According to the invention is characterized in that a part of the transformer provided with a sliding sheathing or apron or in that the entire transmitter is floatingly mounted in a bearing shell of sliding material such as plastic, optimizes the electrical transmission without restricting the mechanical function. The sliding plastic of the bearing shell is enriched here with a ferromagnetic material, so that the field line profile is improved by the plastic.
Diese und weitere Merkmale von bevorzugten Weiterbildungen der Erfindung gehen außer aus den Ansprüchen auch aus der Beschreibung und den Zeichnungen hervor, wobei die einzelnen Merkmale jeweils für sich allein oder zu mehreren in Form von Unterkombinationen bei der Ausführungsform der Erfindung und auf anderen Gebieten verwirklicht sein und vorteilhafte sowie für sich schutzfähige Ausführungen darstellen können, für die hier Schutz beansprucht wird.These and other features of preferred embodiments of the invention will become apparent from the claims and from the description and drawings, wherein the individual features are realized individually or in each case in the form of sub-combinations in the embodiment of the invention and in other fields and can represent advantageous and protectable versions for which protection is claimed here.
Ausführungsbeispiele eines erfindungsgemäßen induktiven Übertragers zur Signal- und Energieübertragung zwischen Bauteilen eines Drehübertragers werden anhand der Zeichnung erläutert. Es zeigen:
- Figur 1 zwei Ansichten eines Drehübertragers zwischen einer Lenkspindel und einer Lenksäule eines Kraftfahrzeuges mit einer magnetischen Schürze;
Figur 2 zwei Ansichten eines Drehübertragers zwischen einer Lenkspindel und einer Lenksäule eines Kraftfahrzeuges mit einer schwimmenden Lagerung an einer magnetischen Lagerschale und- Figur 3 eine Teilansicht der Lagerschale nach der
Figur 2.
- Figure 1 shows two views of a rotary transformer between a steering shaft and a steering column of a motor vehicle with a magnetic skirt;
- Figure 2 shows two views of a rotary transformer between a steering shaft and a steering column of a motor vehicle with a floating bearing on a magnetic bearing shell and
- FIG. 3 shows a partial view of the bearing shell according to FIG. 2.
In Figur 1 ist eine Lenksäule 10 gezeigt, die Bestandteil einer hier nicht dargestellten und nicht näher erläuterten Lenkvorrichtung für ein Kraftfahrzeug ist. Das Ende einer Lenkspindel 11 ist dabei mittels eines Lenkrades drehbar, wobei die Lenkspindel 11 an der Lenksäule 10, die fest mit dem Chassis des Fahrzeugs verbunden ist, drehbar gehalten ist.In Figure 1, a
Zwischen der Lenkspindel 11 und der Lenksäule 10 ist ein Drehübertrager 12 angeordnet mit dem Messdaten und/oder elektrische Energie zwischen beispielsweise auf der Lenkspindel 11 angeordneten Sensoren und einer zentralen Auswerteeinheit im Fahrzeug übertragen werden können. Es werden dabei ein primäres Übertragerteil 13 mit einer Spule 14 und einem dazugehörigen Kern und ein sekundäres Übertragerteil 15 mit einer Spule 16 und einem dazugehörigen Kern gebildet.Between the
Das primäre Übertragerteil 13 ist dabei fest an der Lenksäule 10 und das sekundäre Übertragerteil 15 ist drehbar mit der Lenkspindel 11 angeordnet. Bei diesem Ausführungsbeispiel ist am Übertrager 12 eine Schürze 17 aus flexiblem ferromagnetischen Material, beispielsweise aus Silikon oder einem Elastomer mit ähnlichen Eigenschaften und mit eingebettetem ferromagnetischen Pulver, vorhanden, die den Spalt zwischen dem primären 13 und dem sekundären Übertragerteil 15 nahezu vollständig umschließt. Beim Aufbau von solchen Übertragern 12 an einer Lenkvorrichtung ergeben sich in der Regel Öffnungen durch das fertigungs- und montagebedingte Lagerspiel, insbesondere zwischen den beiden Spulen 14 und 16 und somit eine nicht zu vernachlässigende Ausstrahlmöglichkeit von elektromagnetischen Strahlen, die zu Störungen im Kraftfahrzeug führen können.The
Die zuvor beschriebenen Öffnungen werden auf einfache Weise mit der magnetischen Schürze 17 abgedichtet. Bei der Montage wird hier die magnetische Schürze 17 über den Kern des sekundären Übertragerteils 15 gestülpt und befestigt. Der Kern des primären Übertragerteils 13 wird dann durch die Schürze 17 in den Bereich des sekundären Übertragerteils 15 gebracht. Wenn der Innendurchmesser der Schürze 17 dabei kleiner ist als der Außendurchmesser des sekundären Kerns, kann keine elektromagnetisch Strahlung nach außen dringen.The above-described openings are easily sealed with the
Bei einem Ausführungsbeispiel nach Figur 2 ist eine Lagerschale 20 angeordnet, an der das primäre und/oder das sekundäre Übertragerteil 13, 15 gleitend mit einem in vorgegebenen Grenzen vorhandenen mechanischem Spiel führbar ist, wobei ein Spalt zwischen dem primären und dem sekundären Übertragerteil 13 und 15 nahezu vollständig durch die Lagerschale 20 ausgefüllt wird. Die gleich wirkenden Bauteile sind hier mit den gleichen Bezugszeichen versehen, wobei in Figur 3 ein vergrößerter Ausschnitt A der Lagerschale 20 zwischen dem primären Übertragerteil 13 und dem sekundären Übertragerteil 15 gezeigt ist.In an exemplary embodiment according to FIG. 2, a
Das weiter oben beschriebene Spiel zwischen den Übertragerteilen 13 und 15 ist auch bei diesem Ausführungsbeispiel zu berücksichtigen, da hier immer ein Spielausgleich zwischen der Lenksäule und der Lenkspindel erforderlich ist. Der Wirkungsgrad des Übertragers 12 wird bei beiden Ausführungsbeispielen dadurch erhöht, dass die durch das Spiel entstehende Lücke verringert wird. Dadurch, dass der gesamte Übertrager 12 bei dem Ausführungsbeispiel nach der Figur 2 schwimmend in der Lagerschale 20 aus gleitendem Material wie Kunststoff Pulver gelagert ist, wird die elektrische Übertragung optimiert ohne die mechanische Funktion einzuschränken. Der gleitende Kunststoff der Lagerschale 20 ist auch hier mit einem ferromagnetischen Material angereichert.The game described above between the
Claims (7)
- Inductive transmission device for transmitting measurement data and/or electrical energy between two components which can move with respect to one another and which have a primary and a secondary transmission part (13, 15), wherein the gap between the primary and the secondary transmitter parts (13, 15) is almost completely enclosed by means of an apron (17) made of a flexible ferromagnetic material.
- Inductive transmission device according to Claim 1, characterized in that the inductively coupling coils (14, 16) and the associated cores can move with respect to one another with mechanical play which is present in predefined limits, and in that the apron (17) is fitted over the primary or the secondary transmitter part (15) and is in sliding contact with the respective other transmitter part (13).
- Inductive transmission device for transmitting measurement data and/or electrical energy between two components which can move with respect to one another and which have a primary and a secondary transmitter part, wherein a sliding ferromagnetic material (20) is provided in the region between the primary and the secondary transmitter parts (13, 15), characterized in that the sliding ferromagnetic material is a bearing shell (20) on which the primary and/or the secondary transmitter part (13, 15) can be guided in a sliding fashion, with mechanical play which is present in predefined limits, wherein a gap between the primary and the secondary transmitter parts (13, 15) is almost completely filled by the bearing shell (20).
- Inductive transmission device according to one of the preceding claims, characterized in that the transmitter parts (13, 15) are arranged in a rotationally symmetrical fashion with respect to one another and at least one transmitter part (15) is rotatable.
- Inductive transmission device according to Claim 4, characterized in that one rotationally symmetrical transmitter part (15) is provided on the longitudinal spindle (11) of a vehicle and the other rotationally symmetrical transmitter part (13) is provided on the steering column (10) of a vehicle, and in that transmission of measurement data and/or energy can be carried out by means of the transmitter parts (13, 15).
- Inductive transmission device according to one of the preceding claims, characterized in that the ferromagnetic material (17, 20) is a plastic in which a ferromagnetic powder is embedded.
- Inductive transmission device according to Claim 6, characterized in that the plastic is silicone or an elastomer with similar properties.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19914395 | 1999-03-30 | ||
| DE19914395A DE19914395A1 (en) | 1999-03-30 | 1999-03-30 | Inductive transformer |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP1041589A2 EP1041589A2 (en) | 2000-10-04 |
| EP1041589A3 EP1041589A3 (en) | 2001-10-10 |
| EP1041589B1 true EP1041589B1 (en) | 2008-01-02 |
Family
ID=7902935
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP00105453A Expired - Lifetime EP1041589B1 (en) | 1999-03-30 | 2000-03-15 | Inductive transmission device |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP1041589B1 (en) |
| DE (2) | DE19914395A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10978911B2 (en) | 2016-12-19 | 2021-04-13 | Apple Inc. | Inductive power transfer system |
| US11108282B2 (en) | 2016-06-01 | 2021-08-31 | Apple Inc. | Powered joint with wireless transfer |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10125403A1 (en) * | 2001-05-25 | 2002-12-12 | Valeo Schalter & Sensoren Gmbh | transmission unit |
| DE10209511A1 (en) * | 2002-03-05 | 2003-10-02 | Siemens Ag | Contactless high frequency signal transmission unit for car steering columns has lacquer covered wire which is welded to via the lacquer to a coil support |
| DE502005003976D1 (en) | 2005-03-24 | 2008-06-19 | Siemens Ag | Inductive rotary transformer |
| DE102008013649B4 (en) * | 2008-03-11 | 2010-04-15 | Sew-Eurodrive Gmbh & Co. Kg | Apparatus for contactless energy transmission and use of the device |
| DE102008000644A1 (en) * | 2008-03-13 | 2009-09-17 | Zf Friedrichshafen Ag | Rotary transfer assembly |
| ITVR20130041A1 (en) * | 2013-02-15 | 2014-08-15 | Gussi Italia S R L | SYSTEM FOR THE TRANSMISSION OF ENERGY AND DATA, PARTICULARLY FOR FLYING VEHICLES WHICH BOATS AND CARS |
| US10107036B2 (en) | 2015-02-04 | 2018-10-23 | Nabors Drilling Technologies Usa, Inc. | Rotary transformer for power transmission on a drilling rig system and method |
| FR3085612B1 (en) | 2018-09-11 | 2021-06-11 | Psa Automobiles Sa | VERSATILE AND DEFORMABLE ELECTROMAGNETIC GRIPPING TOOL |
| FR3085878B1 (en) | 2018-09-13 | 2020-12-04 | Psa Automobiles Sa | VERSATILE AND DEFORMABLE ELECTROMAGNETIC PREHENSION TOOL WITH DOUBLE MEMBRANE |
| FR3103724B1 (en) | 2019-11-28 | 2022-02-11 | Psa Automobiles Sa | VERSATILE AND DEFORMABLE ELECTROMAGNETIC GRIP TOOL |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR452011A (en) * | 1912-06-08 | 1913-05-05 | Riccardo Arno | Production and safety system for the immunity of people and against the dangers of fire in electrical installations, based on the use of a transformer operating as a safety device |
| US4030058A (en) * | 1976-03-30 | 1977-06-14 | Westinghouse Electric Corporation | Inductive coupler |
-
1999
- 1999-03-30 DE DE19914395A patent/DE19914395A1/en not_active Withdrawn
-
2000
- 2000-03-15 DE DE50014885T patent/DE50014885D1/en not_active Expired - Lifetime
- 2000-03-15 EP EP00105453A patent/EP1041589B1/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11108282B2 (en) | 2016-06-01 | 2021-08-31 | Apple Inc. | Powered joint with wireless transfer |
| US10978911B2 (en) | 2016-12-19 | 2021-04-13 | Apple Inc. | Inductive power transfer system |
Also Published As
| Publication number | Publication date |
|---|---|
| DE19914395A1 (en) | 2000-10-12 |
| EP1041589A3 (en) | 2001-10-10 |
| DE50014885D1 (en) | 2008-02-14 |
| EP1041589A2 (en) | 2000-10-04 |
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