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EP1776260A1 - Ensemble antenne d'emission servant a emettre un signal de reveil grandes ondes pour un capteur d'id d'un systeme de vehicule automobile sans cle - Google Patents

Ensemble antenne d'emission servant a emettre un signal de reveil grandes ondes pour un capteur d'id d'un systeme de vehicule automobile sans cle

Info

Publication number
EP1776260A1
EP1776260A1 EP05740735A EP05740735A EP1776260A1 EP 1776260 A1 EP1776260 A1 EP 1776260A1 EP 05740735 A EP05740735 A EP 05740735A EP 05740735 A EP05740735 A EP 05740735A EP 1776260 A1 EP1776260 A1 EP 1776260A1
Authority
EP
European Patent Office
Prior art keywords
antenna arrangement
transmitting antenna
motor vehicle
layers
core
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Withdrawn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
EP05740735A
Other languages
German (de)
English (en)
Inventor
Mirko Schindler
Andreas Van Den Boom
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.)
Huf Huelsbeck and Fuerst GmbH and Co KG
Original Assignee
Huf Huelsbeck and Fuerst GmbH and Co KG
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 Huf Huelsbeck and Fuerst GmbH and Co KG filed Critical Huf Huelsbeck and Fuerst GmbH and Co KG
Publication of EP1776260A1 publication Critical patent/EP1776260A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R25/00—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles
    • B60R25/10—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles actuating a signalling device
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R25/00—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
    • H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
    • H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
    • H01F1/12—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
    • H01F1/14—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys
    • H01F1/147—Alloys characterised by their composition
    • H01F1/153—Amorphous metallic alloys, e.g. glassy metals
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/27—Adaptation for use in or on movable bodies
    • H01Q1/32—Adaptation for use in or on road or rail vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B82—NANOTECHNOLOGY
    • B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
    • B82Y40/00—Manufacture or treatment of nanostructures

Definitions

  • Transmitting antenna arrangement for emitting a long-wave Auf ⁇ wake-up signal for an ID transmitter of a keyless motor vehicle access system
  • the invention relates to a transmitting antenna arrangement for emitting a long-wave wake-up signal for an ID transmitter of a keyless vehicle access system having an induction coil arranged in the interior of a motor vehicle component with at least one winding and a core surrounded by the winding.
  • Such a transmitting antenna arrangement is known, for example, from the published patent application DE 102 36 957 A1.
  • the document describes a vehicle door handle with an electronic module integrated therein, which comprises a microcontroller connected to an antenna via an antenna driver.
  • the antenna has a ferrite core, which is surrounded by a Spulen ⁇ winding.
  • Disadvantages of the use of ferrite cores are the inaccuracies or large scattering widths of the inductances produced due to shrinkage of the ferrites during sintering, which necessitate a subsequent equalization of the antenna inductances produced in this way.
  • One solution is, for example, to design the antenna arrangement with two spaced-apart ferrite core rods, the trimming of the inductance being carried out by changing the inductance
  • the object of the invention is to provide inexpensive transmission antenna arrangements with reduced manufacturing tolerances. This object is achieved by a transmitting antenna nenan angel with the features of claim 1.
  • the core is in the form of a flat strip and consists of a plurality of superimposed layers extending over the entire length of the strip, the layers being metal strips.
  • BESTATIGUNGSKOPIE layers of a nanocrystalline or amorphous, weichma ⁇ netic metal alloy of high permeability comprise, wherein each of the metal layers has a thickness between 15 and 100 .mu.m, preferably between 20 and 30 .mu.m, and wherein the metal layers are arranged one above the other so that a current flow of a Metal layer to an adjacent er ⁇ sword is.
  • the use of said material leads to a core with the desired soft magnetic properties.
  • the inductances of the coils produced on the basis of such cores can already be set more precisely during production by a multiple than the inductances of ferrite core coils, since the magnetic properties and dimensions the cores are more reproducible.
  • the several thin metal layers can be spaced apart by insulator layers or else lie directly on top of one another, wherein in the latter case the current flow between the layers can be made difficult by a special surface structure of the layers.
  • the cores produced from the thin metal alloy layers have a significantly higher mechanical flexibility compared to ferrite cores (inter alia bendability), which facilitates their mounting in a motor vehicle component, in particular in a door handle.
  • the cores additionally have (thicker) insulator layers.
  • the few thin metal alloy layers also make it possible to produce a core and thus an antenna arrangement with a relatively low weight.
  • the thin metal alloy layer used is preferably an amorphous cobalt alloy, alternatively an iron-based nanocrystalline alloy.
  • Another advantage of using such layers for constructing cores for induction coils of antenna arrangements is that the thin metal layers and the cores made therefrom are cheaper to produce than cores made of ferrites.
  • 5 to 20, preferably 6 to 10 metal layers are arranged one above the other. This number leads to an optimum of the desired magnetic properties and the weight.
  • FIG. 1 shows a schematic plan view of a door handle with the transmitting antenna arrangement according to the invention
  • FIG. 2 shows a schematic sectional view of the core used in the transmitting antenna arrangement.
  • the antenna arrangement according to the invention for emitting a long-wave wake-up signal for an ID transmitter of a keyless vehicle access system is typically arranged inside a motor vehicle door handle.
  • 1 shows a schematic plan view of an outwardly directed side surface of a door handle 1.
  • the antenna arrangement 2 comprises a core 3 with a coil winding 4 arranged thereon.
  • the supply lines 5 of the coil 4 are connected to an antenna driver circuit 6.
  • the antenna arrangement transmits at a carrier frequency between 100 and 200 kHz, preferably about 125 kHz.
  • the core 3 has an 'elongated flat shape.
  • FIG. 2 shows a sectional view on a cutting plane transverse to the longitudinal direction of the core.
  • FIG. Fig. 2 is a schematic illustration, ie the ratio of the thickness to the width of the core and the layer thickness ratios do not necessarily correspond to the actual embodiment.
  • the core consists of several superimposed layers extending over the entire length of the strip. These layers comprise metal layers 7.
  • the metal layers consist of a nanocrystalline or amorphous soft magnetic metal alloy of high permeability and in each case have a thickness between 15 and 100 .mu.m, preferably between 20 and 30 .mu.m.
  • metal layers 7 are arranged one above the other, which are covered at the top and bottom by an insulator layer 8, respectively.
  • layers of a nanocrystalline cobalt alloy are used which have a thickness of about 20 to 25 ⁇ m.
  • the metal foils of the "VITROVAC” brand from Vacuumschmelze GmbH can be used.
  • the stacked metal layers are electrically isolated from each other so that the flow of current between the layers is difficult. This can be achieved, for example, by means of an insulating layer arranged between the layers.
  • the use of only a few layers leads on the one hand to a relatively flexible, ie bendable core, on the other hand to a further reduction in weight compared to conventional ferrite cores.
  • the reduced weight of the induction coil leads to a double weight reduction when this induction coil, such as is provided according to the invention, is introduced in a motor vehicle door handle, because in this case, the inside of the door located balancing mass can also be reduced.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Power Engineering (AREA)
  • Lock And Its Accessories (AREA)
  • Details Of Aerials (AREA)

Abstract

L'invention concerne un ensemble antenne d'émission servant à émettre un signal de réveil grandes ondes pour un capteur d'ID d'un système de véhicule automobile sans clé. Une bobine d'induction (2) comprenant au moins un enroulement (4) et un noyau (3) qui est entouré par cet enroulement est disposée à l'intérieur d'un composant de véhicule automobile (1). Le noyau (3) présente la forme d'une bande plate et est constitué de plusieurs couches superposées qui renferment un alliage métallique faiblement magnétique de perméabilité élevée, nanocristallin ou amorphe. Chacune des couches métalliques présente une épaisseur comprise entre 15 µm et 100 µm, et les couches sont superposées de manière que la conduction de courant d'une couche métallique à une couche métallique adjacente soit rendue plus difficile.
EP05740735A 2004-08-02 2005-05-04 Ensemble antenne d'emission servant a emettre un signal de reveil grandes ondes pour un capteur d'id d'un systeme de vehicule automobile sans cle Withdrawn EP1776260A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004037682A DE102004037682A1 (de) 2004-08-02 2004-08-02 Sendeantennenanordnung zum Abstrahlen eines langwelligen Aufwecksignals für einen ID-Geber eines schlüssellosen Kraftfahrzeugzugangssystems
PCT/EP2005/004870 WO2006015632A1 (fr) 2004-08-02 2005-05-04 Ensemble antenne d'emission servant a emettre un signal de reveil grandes ondes pour un capteur d'id d'un systeme de vehicule automobile sans cle

Publications (1)

Publication Number Publication Date
EP1776260A1 true EP1776260A1 (fr) 2007-04-25

Family

ID=34967225

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05740735A Withdrawn EP1776260A1 (fr) 2004-08-02 2005-05-04 Ensemble antenne d'emission servant a emettre un signal de reveil grandes ondes pour un capteur d'id d'un systeme de vehicule automobile sans cle

Country Status (6)

Country Link
US (1) US20070279300A1 (fr)
EP (1) EP1776260A1 (fr)
KR (1) KR20070044475A (fr)
CN (1) CN1993256A (fr)
DE (1) DE102004037682A1 (fr)
WO (1) WO2006015632A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5443407B2 (ja) 2011-02-21 2014-03-19 株式会社東海理化電機製作所 アンテナ装置
JP2015101908A (ja) * 2013-11-27 2015-06-04 アルプス電気株式会社 キーレスエントリシステム
DE102019210543A1 (de) * 2019-07-17 2021-01-21 Aug. Winkhaus Gmbh & Co. Kg Identifikationsmittel für eine Schließanlage

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3891448B2 (ja) * 1994-04-11 2007-03-14 日立金属株式会社 薄型アンテナおよびそれを用いたカード
DE59811066D1 (de) * 1997-10-14 2004-04-29 Huf Huelsbeck & Fuerst Gmbh Schliessvorrichtung, insbesondere für kraftfahrzeuge
JP4167320B2 (ja) * 1998-03-31 2008-10-15 富士通テン株式会社 車両用ワイヤレス制御装置およびその携帯機
JP3855253B2 (ja) * 2000-06-13 2006-12-06 アイシン精機株式会社 バーアンテナおよびその製造方法
FR2828286B1 (fr) * 2001-08-02 2003-11-21 Siemens Automotive Sa Dispositif de diagnostic pour une antenne
EP1476622A1 (fr) * 2002-02-22 2004-11-17 Schaffner Emv Ag Bobine d'inductance destinee notamment au systeme de fermeture d'une portiere de vehicule
JP2003283231A (ja) * 2002-03-26 2003-10-03 Aisin Seiki Co Ltd アンテナおよびその製造方法
EP1513999A1 (fr) * 2002-06-20 2005-03-16 Schaffner Emv Ag Circuit de commande electronique comprenant un emetteur pour systeme de fermeture de portiere de vehicule
JP2004060191A (ja) * 2002-07-25 2004-02-26 Aisin Seiki Co Ltd 車両用ドアハンドル
JP4238221B2 (ja) * 2003-01-23 2009-03-18 バクームシュメルツェ ゲゼルシャフト ミット ベシュレンクテル ハフツング ウント コンパニ コマンディートゲゼルシャフト アンテナコア
US20070008235A1 (en) * 2003-04-22 2007-01-11 Aisen Seiki Kabushiki Kaisha antenna device with capacitance-operated sensor

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2006015632A1 *

Also Published As

Publication number Publication date
US20070279300A1 (en) 2007-12-06
CN1993256A (zh) 2007-07-04
DE102004037682A1 (de) 2006-03-16
WO2006015632A1 (fr) 2006-02-16
KR20070044475A (ko) 2007-04-27

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