EP0780529A1 - Système de verrouillage - Google Patents

Système de verrouillage Download PDF

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Publication number
EP0780529A1
EP0780529A1 EP96119594A EP96119594A EP0780529A1 EP 0780529 A1 EP0780529 A1 EP 0780529A1 EP 96119594 A EP96119594 A EP 96119594A EP 96119594 A EP96119594 A EP 96119594A EP 0780529 A1 EP0780529 A1 EP 0780529A1
Authority
EP
European Patent Office
Prior art keywords
lock
induction coil
side induction
key
lock body
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Withdrawn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
EP96119594A
Other languages
German (de)
English (en)
Inventor
Günter Dietz
Matthias Kuhn
Thomas Rupprecht
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.)
Conti Temic Microelectronic GmbH
Original Assignee
Temic Telefunken Microelectronic 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 Temic Telefunken Microelectronic GmbH filed Critical Temic Telefunken Microelectronic GmbH
Publication of EP0780529A1 publication Critical patent/EP0780529A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B17/00—Accessories in connection with locks
    • E05B17/22—Means for operating or controlling lock or fastening device accessories, i.e. other than the fastening members, e.g. switches, indicators
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
    • G07C9/00—Individual registration on entry or exit
    • G07C9/00174—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
    • G07C9/00309—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated with bidirectional data transmission between data carrier and locks
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
    • G07C9/00—Individual registration on entry or exit
    • G07C9/00174—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
    • G07C2009/00753—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated by active electrical keys
    • G07C2009/00769—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated by active electrical keys with data transmission performed by wireless means
    • G07C2009/00777—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated by active electrical keys with data transmission performed by wireless means by induction
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
    • G07C9/00—Individual registration on entry or exit
    • G07C9/00174—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
    • G07C9/00944—Details of construction or manufacture
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T70/00—Locks
    • Y10T70/70—Operating mechanism
    • Y10T70/7051—Using a powered device [e.g., motor]
    • Y10T70/7057—Permanent magnet
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T70/00—Locks
    • Y10T70/70—Operating mechanism
    • Y10T70/7051—Using a powered device [e.g., motor]
    • Y10T70/7062—Electrical type [e.g., solenoid]
    • Y10T70/7068—Actuated after correct combination recognized [e.g., numerical, alphabetical, or magnet[s] pattern]
    • Y10T70/7073—Including use of a key
    • Y10T70/7079—Key rotated [e.g., Eurocylinder]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T70/00—Locks
    • Y10T70/70—Operating mechanism
    • Y10T70/7441—Key
    • Y10T70/778—Operating elements
    • Y10T70/7791—Keys
    • Y10T70/7876—Bow or head

Definitions

  • the invention relates to a locking system according to the preamble of claim 1.
  • Such a locking system is known from DE 42 07 161 A1.
  • the locking system described there has a key unit with an induction coil on the key side and a lock unit with an induction coil on the lock side.
  • Data can be transmitted as encryption information between the induction coils, the data being transmitted with regard to the activation of a locking device provided in the lock unit.
  • the lock-side induction coil is placed on a lock body of the lock unit by means of a coil carrier and, when the key unit is inserted in the lock unit, is in close proximity to the key-side induction coil attached in a key bit of the key unit.
  • the area of the lock-side induction coil oriented in the direction of the key-side induction coil is open.
  • the interference immunity of the data transmission can consequently be significantly impaired by environmental influences, for example by moisture penetrating to the lock-side induction coil. Due to the induction coils arranged in the immediate vicinity of one another, the outlay and the costs for producing the lock unit are high.
  • the quality of the lock-side induction coil and, consequently, the interference immunity of the data transmission after installation of the lock-side Induction coil reduced to the lock body by the material properties of the lock body.
  • the reason for this reduction is a ring current which is induced in the lock body by a magnetic field that arises during data transmission. Since the magnetic field is a high-frequency alternating field, this ring current can only flow through a thin layer on the surface of the lock body due to the so-called skin effect.
  • the resistance of this layer the thickness of which depends on the depth of penetration of the magnetic field into the lock body, depends on the conductivity and the magnetic permeability of the lock body.
  • the thin layer and the lock-side induction coil represent a transformer with the lock-side induction coil as the primary coil and the thin layer as the short-circuited secondary coil, the resistance of this thin layer carrying the ring current to the primary coil, i.e. to the lock-side induction coil, is highly transformed and thus causes an increase in resistance the lock-side induction coil. As a result, the quality of the lock-side induction coil is reduced by mounting the lock-side induction coil on the lock body.
  • the invention has for its object to provide a locking system according to the preamble of claim 1, which can be produced inexpensively and with little effort and which enables interference-free data transmission that is not significantly affected by environmental influences.
  • the lock unit has a shielding body shielding magnetic fields, which is arranged between the lock-side induction coil and the lock body.
  • the lock body is magnetically shielded by the shielding body from the induction coils provided for energy and data transmission, so that a magnetic field arising during data and energy transmission cannot penetrate into the lock body.
  • the quality of the lock-side induction coil is independent of the material of the lock body.
  • the inductance of the lock-side induction coil is independent of the distance between the lock body and the induction coil on the lock side and consequently regardless of the assembly tolerances that arise when the coil carrier is placed on the lock body.
  • the energy transfer and the interference immunity of the data transfer which are dependent on the quality and the inductance of the induction coils, are accordingly improved by the shielding body.
  • the shielding body is preferably made of a material with good electrical conductivity, advantageously of a non-ferromagnetic material, for example of copper.
  • the locking system can be used wherever, in addition to a mechanical lock, the use of an additional electrical security system or identification system for access authorization or access authorization control is necessary or recommended.
  • the invention is described below with reference to an application example from the automotive field. It shows a locking system for operating an ignition device and an electronic immobilizer of a motor vehicle.
  • the lock body 1 is designed in a known manner as a lock cylinder with a cylinder core rotatably mounted in a housing and lockable via mechanical tumblers. In order to ensure an inexpensive and difficult to destroy lock, it is made of a ferromagnetic material, for example of steel.
  • the lock-side induction coil 11 is placed on the lock body 10 by means of the coil carrier 12 made of a plastic.
  • the bobbin 12 has a key opening 14 through which the key bit 20 of the key unit 2 can be inserted into the lock body 10 to unlock the lock unit 1.
  • the key-side induction coil 21 of the transponder 23 arranged in the handle part 22 of the key unit 2 is brought near the lock-side induction coil 11.
  • An inductive energy and data transmission then takes place between the induction coils 11 and 21.
  • the transponder 23 is supplied with energy by the energy transmission and is thereby activated for the transmission of data.
  • the transponder 23 can also be activated by data that is transmitted from the lock-side induction coil 11 to the key-side induction coil 21 to send out data.
  • the key unit 2 On the basis of the data transmitted from the key-side induction coil 21 to the lock-side induction coil 11, the key unit 2 is identified and, if there is an access authorization for the vehicle, the immobilizer of the vehicle is deactivated.
  • the key unit 2 can therefore also be designed as a reversible key.
  • the shielding body 13 is arranged between the lock-side induction coil 11 and the lock body 10. It is made of copper, ie of a non-ferromagnetic material with high conductivity. It is provided for shielding the lock body 10 from the lock-side induction coil 11 and thus prevents the magnetic field arising during the energy and data transmission from penetrating into the lock body 10.
  • the shielding body 13 is made at least so thick that the magnetic field cannot penetrate it. Since the magnetic field in the present example is an alternating field with a frequency of 125 kHz, and since the depth of penetration of this magnetic field in copper is approximately 0.2 mm, it is therefore thicker than this 0.2 mm.
  • a ring current is induced by the magnetic field generated during the energy and data transmission, but because of the skin effect, it flows only through a thin layer on the side of the shielding body 13 facing the lock-side induction coil 11. In the absence of the shielding body 13, this ring current would flow through a thin layer on the surface of the lock body 10.
  • the ring current brings about a reduction in the quality of the lock-side induction coil 11, this reduction being greater the greater the resistance of the layer carrying the ring current.
  • the magnetic field can penetrate deeper into the shielding body 13 than into the lock body 10 and since the electrical conductivity of the shielding body 13 is also greater than that of the lock body 10, the layer of the shielding body 13 carrying the ring current is lower-ohmic than the corresponding layer of the lock body 10 through which the ring current would flow in the absence of the shielding body 13. Therefore, the quality of the lock-side induction coil is reduced by the ring current that flows in the shielding body 13 to a much lesser extent than by the ring current that would flow in the lock body 10 if there were no shielding body 13. With the shielding body 13, the quality of the lock-side induction coil 11 is accordingly reduced, but this reduction is substantially less than the reduction that is obtained when the coil carrier 12 is mounted on the lock body 10 without the shielding body 13.
  • the lock-side induction coil 11 and the shielding body 13 are firmly connected to one another during the manufacture of the coil support 12, advantageously in one work step, for example by injection molding.
  • a predeterminable distance for example a distance of approximately 1 mm, can consequently be maintained with high accuracy between the induction coil 11 on the lock side and the shielding body 13. Since the inductance of the lock-side induction coil 11 depends on this distance, the inductances of the induction coils connected in this way to shielding bodies depend only slightly on one another.
  • the shielding also reduces the influence of the lock body 10 on the inductance of the lock-side induction coil 11, so that when the coil support 12 is mounted on the lock body 10, no high demands are made on maintaining a certain distance between the lock body 10 and the lock-side induction coil 11 are placed.
  • Vehicles with conventional ignition locks can therefore be retrofitted with a lock-side induction coil to control an immobilizer with little design effort and at low cost.
EP96119594A 1995-12-22 1996-12-06 Système de verrouillage Withdrawn EP0780529A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19548268 1995-12-22
DE19548268A DE19548268C2 (de) 1995-12-22 1995-12-22 Schließsystem

Publications (1)

Publication Number Publication Date
EP0780529A1 true EP0780529A1 (fr) 1997-06-25

Family

ID=7781102

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96119594A Withdrawn EP0780529A1 (fr) 1995-12-22 1996-12-06 Système de verrouillage

Country Status (4)

Country Link
US (1) US5735152A (fr)
EP (1) EP0780529A1 (fr)
CN (1) CN1105221C (fr)
DE (1) DE19548268C2 (fr)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19644308C2 (de) * 1996-10-24 1998-11-12 Keso Gmbh Flachschlüssel
DE19703593A1 (de) * 1997-01-31 1998-08-06 Gerth Helmut Vorrichtung zum Sichern von Gegenständen
DE19755093B4 (de) * 1997-12-11 2013-03-28 Continental Teves Ag & Co. Ohg Energieempfangsanschluss und Freigabeverfahren
US6374653B1 (en) * 1997-12-22 2002-04-23 Security People, Inc. Mechanical/electronic lock and key therefor
DE19832516A1 (de) * 1998-07-20 2000-01-27 Schulte Schlagbaum Ag Schloß, insbesondere für eine Schließanlage
US6363759B1 (en) * 1999-10-04 2002-04-02 Apple Computer, Inc. Rotatable door lock with integrated security feature
DE10323402B3 (de) * 2003-05-23 2005-01-05 Siemens Ag Zugangs- und Benutzungsberechtigungssystem, insbesondere eines Kraftfahrzeuges
US7181939B2 (en) * 2004-08-11 2007-02-27 Andersen Michael T Key assembly
FR2909952B1 (fr) * 2006-12-19 2009-03-20 Valeo Securite Habitacle Sas Antivol de vehicule comprenant un boitier equipe et procede de realisation dudit boitier.
DE102008035243B4 (de) * 2008-07-29 2016-12-22 Continental Automotive Gmbh Schalteinrichtung für ein Fahrzeug mit einer elektronischen Wegfahrsperre und Verfahren zur Betätigung einer elektronischen Wegfahrsperre
EP2997209B1 (fr) 2013-05-15 2021-02-17 TriTeq Lock and Security LLC Serrure
CN110084944A (zh) * 2019-05-10 2019-08-02 怀化学院 一种光通信智能门锁
CN112610077A (zh) * 2019-09-18 2021-04-06 南京南瑞继保电气有限公司 一种无线射频识别机械锁具

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3686421A (en) * 1971-08-30 1972-08-22 Edgar Wunsche Unitized electride holder and arm for electric arc furnace electrodes or the like
US4439699A (en) * 1982-01-18 1984-03-27 International Business Machines Corporation Linear moving coil actuator
US4453269A (en) * 1982-09-22 1984-06-05 Chamberlain Manufacturing Corporation Apparatus for improving the frequency stability of a transmitter oscillator circuit
WO1992020091A1 (fr) * 1991-05-02 1992-11-12 Handy & Harman Materiau de protection contre les interferences electromagnetiques
DE4207161A1 (de) 1992-03-06 1993-09-09 Winkhaus Fa August Elektronischer schliesszylinder
EP0628684A1 (fr) * 1993-06-08 1994-12-14 Kabushiki Kaisha Tokai Rika Denki Seisakusho Dispositif à cylindre actionné par une clé

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3118712A1 (de) * 1981-05-12 1982-12-02 Cyklop International Emil Hoffmann KG, 5000 Köln Vorrichtung zum anlegen und spannen eines umreifungsbandes um ein packstueck
JPS5991274A (ja) * 1982-11-16 1984-05-25 日産自動車株式会社 シリンダ錠の抜き取り検知装置
JPH0714120B2 (ja) * 1988-02-09 1995-02-15 大阪府 超電導磁気遮蔽体
EP0525730B1 (fr) * 1991-08-02 1995-11-02 Kabushiki Kaisha Tokai Rika Denki Seisakusho Serrure cylindrique et clef
JP3282274B2 (ja) * 1993-03-09 2002-05-13 日産自動車株式会社 送受信機を用いた制御装置
DE4317119C2 (de) * 1993-05-21 1996-04-04 Audi Ag Diebstahlschutzeinrichtung als Immobilisationseinrichtung an einem Kraftfahrzeug
DE4329315C1 (de) * 1993-08-31 1994-12-08 Siemens Ag System zur kontaktlosen Daten- bzw. Energieübertragung
US5551267A (en) * 1994-04-15 1996-09-03 Briggs & Stratton Corporation Anti-magnetic tampering system for automobile ignition lock
JP2624187B2 (ja) * 1994-08-24 1997-06-25 日産自動車株式会社 自動車のキイシリンダ装置

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3686421A (en) * 1971-08-30 1972-08-22 Edgar Wunsche Unitized electride holder and arm for electric arc furnace electrodes or the like
US4439699A (en) * 1982-01-18 1984-03-27 International Business Machines Corporation Linear moving coil actuator
US4453269A (en) * 1982-09-22 1984-06-05 Chamberlain Manufacturing Corporation Apparatus for improving the frequency stability of a transmitter oscillator circuit
WO1992020091A1 (fr) * 1991-05-02 1992-11-12 Handy & Harman Materiau de protection contre les interferences electromagnetiques
DE4207161A1 (de) 1992-03-06 1993-09-09 Winkhaus Fa August Elektronischer schliesszylinder
EP0628684A1 (fr) * 1993-06-08 1994-12-14 Kabushiki Kaisha Tokai Rika Denki Seisakusho Dispositif à cylindre actionné par une clé

Also Published As

Publication number Publication date
DE19548268A1 (de) 1997-06-26
CN1153860A (zh) 1997-07-09
DE19548268C2 (de) 2000-02-17
US5735152A (en) 1998-04-07
CN1105221C (zh) 2003-04-09

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