EP1041589B1 - Dispositif de transmission inductive - Google Patents

Dispositif de transmission inductive Download PDF

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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
Application number
EP00105453A
Other languages
German (de)
English (en)
Other versions
EP1041589A3 (fr
EP1041589A2 (fr
Inventor
Harald Kazmierczak
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch 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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP1041589A2 publication Critical patent/EP1041589A2/fr
Publication of EP1041589A3 publication Critical patent/EP1041589A3/fr
Application granted granted Critical
Publication of EP1041589B1 publication Critical patent/EP1041589B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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)
  • Near-Field Transmission Systems (AREA)
  • Power Steering Mechanism (AREA)

Claims (7)

  1. Transmetteur inductif destiné à la transmission de données de mesure et/ou d'énergie électrique entre deux composants mobiles l'un par rapport à l'autre et comportant un organe de transmission primaire et un organe de transmission secondaire (13, 15), dans lequel la fente séparant l'organe de transmission primaire de l'organe de transmission secondaire (13, 15) est entourée presque intégralement à l'aide d'une jupe (17) en matériau ferromagnétique souple.
  2. Transmetteur inductif selon la revendication 1,
    caractérisé en ce que
    les bobines (14, 16) à couplage inductif et les noyaux associés sont mobiles l'un par rapport à l'autre avec un certain jeu mécanique dans des limites prédéterminées, et la jupe (17) est retroussée par-dessus l'organe de transmission primaire ou secondaire (15), et en contact coulissant avec l'autre organe de transmission respectif (13).
  3. Transmetteur inductif destiné à la transmission de données de mesure et/ou d'énergie électrique entre deux composants mobiles l'un par rapport à l'autre et comportant un organe de transmission primaire et un organe de transmission secondaire, avec dans la zone située entre l'organe de transmission primaire et l'organe de transmission secondaire (13, 15), un matériau ferromagnétique (20) permettant le coulissement,
    caractérisé en ce que
    le matériau ferromagnétique permettant le coulissement est une coquille de coussinet (20) au niveau de laquelle l'organe de transmission primaire et/ou secondaire (13, 15) est déplaçable de manière coulissante, avec un certain jeu mécanique dans des limites prédéterminées, et une fente séparant l'organe de transmission primaire de l'organe de transmission secondaire (13, 15) est presque intégralement remplie par la coquille de coussinet (20).
  4. Transmetteur inductif selon l'une des revendications précédentes,
    caractérisé en ce que
    les organes de transmission (13, 15) sont disposés symétriques en rotation l'un par rapport à l'autre et au moins l'un (15) des organes de transmission est mobile en rotation.
  5. Transmetteur inductif selon la revendication 4,
    caractérisé en ce qu'
    un organe de transmission (15) symétrique en rotation est appliqué sur l'arbre de direction (11) d'un véhicule et l'autre organe de transmission (13) symétrique en rotation est appliqué sur la colonne de direction (10) du véhicule, et ces organes de transmission (13, 15) permettent la transmission de données de mesure et/ou d'énergie.
  6. Transmetteur inductif selon l'une des revendications précédentes,
    caractérisé en ce que
    le matériau ferromagnétique (17, 20) est une matière plastique dans laquelle est incorporée une poudre ferromagnétique.
  7. Transmetteur inductif selon la revendication 6,
    caractérisé en ce que
    la matière plastique est du silicone ou un élastomère aux propriétés similaires.
EP00105453A 1999-03-30 2000-03-15 Dispositif de transmission inductive Expired - Lifetime EP1041589B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19914395 1999-03-30
DE19914395A DE19914395A1 (de) 1999-03-30 1999-03-30 Induktiver Übertrager

Publications (3)

Publication Number Publication Date
EP1041589A2 EP1041589A2 (fr) 2000-10-04
EP1041589A3 EP1041589A3 (fr) 2001-10-10
EP1041589B1 true EP1041589B1 (fr) 2008-01-02

Family

ID=7902935

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00105453A Expired - Lifetime EP1041589B1 (fr) 1999-03-30 2000-03-15 Dispositif de transmission inductive

Country Status (2)

Country Link
EP (1) EP1041589B1 (fr)
DE (2) DE19914395A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10125403A1 (de) * 2001-05-25 2002-12-12 Valeo Schalter & Sensoren Gmbh Übertragungseinheit
DE10209511A1 (de) * 2002-03-05 2003-10-02 Siemens Ag Vorrichtung zur berührungsfreien Hochfrequenzübertragung
DE502005003976D1 (de) * 2005-03-24 2008-06-19 Siemens Ag Induktiver Drehübertrager
DE102008013649B4 (de) * 2008-03-11 2010-04-15 Sew-Eurodrive Gmbh & Co. Kg Vorrichtung zur berührungslosen Energieübertragung und Verwendung der Vorrichtung
DE102008000644A1 (de) * 2008-03-13 2009-09-17 Zf Friedrichshafen Ag Drehübertragungsanordnung
ITVR20130041A1 (it) * 2013-02-15 2014-08-15 Gussi Italia S R L Sistema per la trasmissione di energia e dati, particolarmente per volanti di veicoli quali imbarcazioni e automobili
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 (fr) 2018-09-11 2021-06-11 Psa Automobiles Sa Outil de prehension electromagnetique polyvalent et deformable
FR3085878B1 (fr) 2018-09-13 2020-12-04 Psa Automobiles Sa Outil de prehension electromagnetique polyvalent et deformable a double membrane
FR3103724B1 (fr) 2019-11-28 2022-02-11 Psa Automobiles Sa Outil de prehension electromagnetique polyvalent et deformable

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR452011A (fr) * 1912-06-08 1913-05-05 Riccardo Arno Système de production et de sureté pour l'immunité des personnes et contre les dangers d'incendie dans les installations électriques, fondé sur l'emploi d'un transformateur fonctionnant comme appareil de sureté
US4030058A (en) * 1976-03-30 1977-06-14 Westinghouse Electric Corporation Inductive coupler

Cited By (2)

* Cited by examiner, † Cited by third party
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
DE50014885D1 (de) 2008-02-14
EP1041589A3 (fr) 2001-10-10
DE19914395A1 (de) 2000-10-12
EP1041589A2 (fr) 2000-10-04

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