EP0130021A1 - Dispositif de verrouillage actionné par clé - Google Patents

Dispositif de verrouillage actionné par clé Download PDF

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Publication number
EP0130021A1
EP0130021A1 EP84304070A EP84304070A EP0130021A1 EP 0130021 A1 EP0130021 A1 EP 0130021A1 EP 84304070 A EP84304070 A EP 84304070A EP 84304070 A EP84304070 A EP 84304070A EP 0130021 A1 EP0130021 A1 EP 0130021A1
Authority
EP
European Patent Office
Prior art keywords
key
series
light
apertures
combination
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.)
Ceased
Application number
EP84304070A
Other languages
German (de)
English (en)
Inventor
Philip Swingewood Jeavons
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.)
ArvinMeritor Light Vehicle Systems UK Ltd
Original Assignee
Wilmot Breeden Ltd
Rockwell Light Vehicle Systems UK Ltd
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 Wilmot Breeden Ltd, Rockwell Light Vehicle Systems UK Ltd filed Critical Wilmot Breeden Ltd
Publication of EP0130021A1 publication Critical patent/EP0130021A1/fr
Ceased 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
    • E05B49/00—Electric permutation locks; Circuits therefor ; Mechanical aspects of electronic locks; Mechanical keys therefor
    • E05B49/002—Keys with mechanical characteristics, e.g. notches, perforations, opaque marks
    • E05B49/006—Keys with mechanical characteristics, e.g. notches, perforations, opaque marks actuating opto-electronic devices

Definitions

  • This invention relates to key-operated locking devices of the kind which include a housing having a key slot into which a key can be inserted to operate the device.
  • keys have been proposed in the form of plastic cards containing embedding magnetic or other metallic elements which generate appropriate magnetic or other signals when inserted within the device.
  • a key-operated locking device for operation by a key which includes a light-impermeable blade formed with at least two series of apertures, said device comprising a housing having a key slot for insertion of a key, switch means positioned for operation by an inserted key, light transmitter and receiver means associated with each of the series of apertures, and control means such that, on operation by an inserted key, the light transmitter and receiver means are actuated to generate a series of signals during withdrawal of the key in dependence on the arrangements of the apertures in the series.
  • the key insertion slot is preferably oepn at its rear end so that, when the key is fully inserted, it projects beyond the rear of the housing.
  • a spring-loaded shutter will be provided to limit the entry of dust and dirt into the key slot but this open-ended arrangement will ensure that a continuous cleaning action can be obtained to avoid any build up of dirt within the key slot.
  • the key preferably comprises a flat metal blade of elongate rectangular form which is formed along the two longer edges thereof with cut-outs which provide the series of apertures, the metal plate being encased within a l d yer of a transparent plastics material which is shaped to provide a handle for the key, that part of the plastics material enclosing the blade of the key being of T-shape in cross-section over a portion of tts length with the entrance to the key insertion slot of corresponding cross-section so that the key can only be inserted in the slot when in the required orientation.
  • the key configuration is preferably such that the portion of T-shape in cross-section is adjacent the handle and that the end of the T-shaped portion is arranged to operate the switch means.
  • the key is preferably arranged to engage a spring-loaded lever to actuate the switch means, the position of the T-shaped portion of the key shank in relation to the series of apertures in the key blade being such that the apertures are disposed beyond the light transmitter and receiver means when the lever is engaged by the key to actuate the switch means.
  • Push-button operated means may also be provided for operating the lever and actuating the switch means to generate a "locking" signal as opposed to the unlocking signal which is generated when the correct key is inserted to actuate the switch means and is then removed from the key insertion slot to nove the series of apertures past the light transmitter and receiver Means to generate the appropriate signal pattern.
  • the key 10 includes a rectangular metal blade 11 which is formed with a series of apertures 12 and 13 along each of its two longer edges. As shown, there are eight aperture positions 1 to 8 along each of the two edges and each edge will either have or not have an aperture depending on the key codé. Where apertures are provided opposite each other at a particular position, the signal generated can be considered as a "1" signal; when an aperture is provided at a particular position only in edge 12, the signal generated can be considered as a "2" signal; and when an aperture is provided at a particular position only in edge 13, the signal generated can be considered as a "3" signal.
  • the code for the particular aperture configuration shown in Figure 2 of the drawings is "11323112". In this respect it is to be noted that the code commences with the position furthest from the free end of the key.
  • the aperture metal blade 11 is encased within a layer 14 of a transparent synthetic plastics material, for example an acrylate resin, the layer 14 of plastics material being shaped to provide a handle 15 which may be of generally trapezoidal form as illustrated or of any other convenient design. That part of the plastics layer 14 which covers the main portion of the metal blade is of rectangular cross-section for the majority of its length but includes a part 16 which is of T-section in cross-section. The part 16 is adjacent the handle 15 and terminates in an inclined ramp surface 17.
  • a transparent synthetic plastics material for example an acrylate resin
  • this includes a housing comprising an outer housing member 20 and an inner housing member 21.
  • the two housing members 20 and 21 are formed as plastic mouldings and, when the other components of the device have been attached to the housing members, the two housing members 20 and 21 are assembled together by means of a pair of retaining pins 22 which pass through apertures formed in lugs 23 of the housing member 20 and bear against the rear surface of the inner housing member 21.
  • the outer housing member 20 includes a key insertion slot 24 the configuration of which is such as to provide lead-in surfaces 25 leading to a T cross-section portion of such size as to receive the T-cross-section part 16 of the key as a free sliding fit.
  • the crosspiece of the T formation is in register with a rectangular through aperture 26 formed in a moulded plastics intermediate member 27, with an aperture 28 in a printed circuit board 29 and with an aperture 30 in the inner housing member 21.
  • the intermediate member 27 includes four chambers within which light-transmitting and receiving means are located.
  • the light-transmitting and receiving means comprises two infra-red emitting diodes 31 and two phototransistors 32.
  • Each diode 31 is arranged in register with an opening 33 communicating with the through aperture 26 and each phototransistor 32 is likewise arranged in register with an opening 34 also communicating with the through aperture 26.
  • the twodiodes 31 are arranged one on each side of the aperture 26 so that, when the key 10 is inserted in the key slot, one diode 31 registers with the row of apertures in edge 12 of the key 10 and the other diode 31 registers with the two of apertures in edge 13 of the key 10.
  • the infra-red beam will impinge on the associated phototransistor 32 to generate an appropriate signal.
  • This signal is transmitted to a logic circuit and depending on whether both phototransistors 32 have generated signals or, if only one phototransistor has generated the signal, an output signal is generated by the logic circuit according to the key code.
  • the intermediate member 27 is rebated corresponding to the stem of the T of the T-shaped key insertion slot, this rebate receiving the stem of the T-shaped part 16 of the key 10.
  • the ramp surface 17 of the T-shaped part 16 of the key 10 engages the tip 35 of a spring loaded lever 36 contained within an extension of this rebate.
  • the lever 36 is pivotally mounted at its lower end and has a curvate abutment portion 37 which is arranged to bear against the operating member of a modular disc switch 38 carried by the printed circuit board 29. The arrangement is such that, when a key 10 is inserted, the ramp surface 17 will engage the tip 35 of the lever 36 to actuate the switch 38 to operate the two diodes 31.
  • Infra-red beams will be emitted by the two diodes 31 but these beams will both be interrupted since the key insertion position at actuation of the switch 38 is such that the rows of apertures in the key edges 12 and 13 are by then disposed inwardly of the openings 33 and 34. However, as the key 10 is withdrawn from the key slot, the rows of apertures in the edges 12 and 13 of the key 10 will come into register with the infra-red beams and the appropriate signals will be passed to the logic circuit to generate the appropriate output signals.
  • a push-button 39 is located beneath the key insertion slot and includes a stem 40 which passes through a guide cylinder 41 forming part of the outer housing member 20.
  • the push-button 39 is. biassed into its normal, non-operated position by means of a resilient sleeve 42 which fits over the guide cylinder 41 and also acts as a seal.
  • the stem 40 of the push-button 39 is held against displacement from the outer housing member 20 by means of a clip 42aand the arrangement is such that, when the push-button 39 is pressed, the end of the stem 40 will move inwardly to displace the lever 36 and actuate the switch 38.
  • the push-button 39 is employed to generate a "locking" signal in that, when the button 39 is depressed to actuate the switch 38 and cause energisation of the two diodes 31, the infra-red beams emitted by the diodes 31 will not be interrupted since there will then be no key in the key slot. Both phototransistors will emit signals and, on receipt of these, the logic circuit will generate a "locking" signal which will be transmitted to the actuating mechanisms of the vehicle door latches and to any other mechanisms incorporated in the vehicle security system.
  • a shutter 43 is contained within the outer housing member 20 and is acted on by a spring 44 so as to be biassed into engagement with the surrounds of the key slot.
  • the shutter 43 and spring 44 are mounted by means of a spindle 45 with the arrangenent such that the .shutter 43will serve to prevent the entry of most dust and dirt into the key slot.
  • any dirt which does.happen to enter the slot will be pushed out of the rear thereof and there will be no accumulation of dirt within the slot.
  • the inner housing member 21 includes coupling formations 46 and 47 for engagement with an electric coupling element 48 (Figure 9), the electric coupling element 48 including socket connectors for electrical connection to pins 49 connected to the printed circuit board 29 and passing through apertures in the inner housing member 21.
  • the device illustrated in the drawings is intended to be mounted in the B post of a motor vehicle, with one device mounted on the driver's side of the vehicle and another on the opposite of the vehicle.
  • the two oevices form part of a vehicle security system which includes the vehicle door latches and boot or tailgate latch and may also include the steering column lock.
  • the vehicle latches will include electrical actuators, e.g.. motors or solenoids which can be operated to effect locking or unlocking of the latches in response to appropriate signals from a microprocessor.
  • the two diodes 31 When a key is inserted into a device to operate the switch 38, the two diodes 31 will be energised for a predetermined period and then, as the key is removed from the key slot, a series of signals will be generated in dependence on the patterns of the apertures along the two edges 12 and 13 of the key. The signal received by the microprocessor will then be compared with a standard programme previously fed into the microprocessor. With a key code as discussed above i.e., two rows of eight aperture positions with three possibilities concerning the provision of apertures at each position, the number of different codes will be 3 8 , i.e. 6561.
  • the number of aperture positions along each edge of the key can be increased, either by lengthening the key or by reducing the size either of the apertures or the spaces between them.
  • a further series of apertures could be provided along the centre line of the key for registry with a third diode and phototransistor. There would then be'seven possible aperture selections at each position. so-that, for eight aperture positions, there would be a total of 7 8 key codes, i.e., 5,764,801 possible codes.
  • an "unlock" signal will be generated by the microprocessor to effect unlocking of the vehicle latches. If, however, when the code generated upon removal of the key does not correspond to the code previously programmed into the microprocessor, provision may be made for reintroduction of another code with the arrangement such that, if two incorrect codes, are introduced into the microprocessor, a warning light, alarm buzzer or other indicator is actuated.

Landscapes

  • Lock And Its Accessories (AREA)
EP84304070A 1983-06-17 1984-06-15 Dispositif de verrouillage actionné par clé Ceased EP0130021A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB08316595A GB2141775B (en) 1983-06-17 1983-06-17 Key-operated locking device
GB8316595 1983-06-17

Publications (1)

Publication Number Publication Date
EP0130021A1 true EP0130021A1 (fr) 1985-01-02

Family

ID=10544417

Family Applications (2)

Application Number Title Priority Date Filing Date
EP19840902460 Withdrawn EP0145764A1 (fr) 1983-06-17 1984-06-12 Dispositif de verrouillage actionne par une clef
EP84304070A Ceased EP0130021A1 (fr) 1983-06-17 1984-06-15 Dispositif de verrouillage actionné par clé

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP19840902460 Withdrawn EP0145764A1 (fr) 1983-06-17 1984-06-12 Dispositif de verrouillage actionne par une clef

Country Status (3)

Country Link
EP (2) EP0145764A1 (fr)
GB (1) GB2141775B (fr)
WO (1) WO1985000048A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5646727A (en) * 1994-01-24 1997-07-08 Varian Associates, Inc. Peristaltic pump

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8529222D0 (en) * 1985-11-27 1986-01-02 Yale Security Prod Ltd Keys
US5132661A (en) * 1987-10-02 1992-07-21 Universal Photonix, Inc. Security system employing optical key shape reader
GB2264750A (en) * 1992-03-05 1993-09-08 Ford Motor Co Preventing unauthorised use of a vehicle fuel pump.
GB2264976A (en) * 1992-03-05 1993-09-15 Ford Motor Co Encoded key and reading device for a security system

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3688269A (en) * 1971-01-15 1972-08-29 Constellation Science And Tech Electronic key lock having data coded key
FR2137279A1 (fr) * 1971-05-14 1972-12-29 Crouzet Sa
FR2160024A5 (fr) * 1971-11-05 1973-06-22 Ymos Metallwerke Wolf & Becker
US3845362A (en) * 1973-08-20 1974-10-29 B Roe Electronic lock
US3947666A (en) * 1974-08-09 1976-03-30 Drake Manufacturing Company Card reader
LU80434A1 (fr) * 1978-10-27 1980-05-07 J Bataille Serrures avec dispositif opto-electronique de lecture
BE886293A (fr) * 1980-11-21 1981-03-16 Iseo Serrature Spa Clef a panneton frontal pour serrure de securite

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE330133B (fr) * 1969-01-07 1970-11-02 Brosow J
IT1101623B (it) * 1977-11-22 1985-10-07 Bsg Schalttechnik Dispositivo per serratura per eviatare l'accesso non autorizzato

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3688269A (en) * 1971-01-15 1972-08-29 Constellation Science And Tech Electronic key lock having data coded key
FR2137279A1 (fr) * 1971-05-14 1972-12-29 Crouzet Sa
FR2160024A5 (fr) * 1971-11-05 1973-06-22 Ymos Metallwerke Wolf & Becker
US3845362A (en) * 1973-08-20 1974-10-29 B Roe Electronic lock
US3947666A (en) * 1974-08-09 1976-03-30 Drake Manufacturing Company Card reader
LU80434A1 (fr) * 1978-10-27 1980-05-07 J Bataille Serrures avec dispositif opto-electronique de lecture
BE886293A (fr) * 1980-11-21 1981-03-16 Iseo Serrature Spa Clef a panneton frontal pour serrure de securite

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5646727A (en) * 1994-01-24 1997-07-08 Varian Associates, Inc. Peristaltic pump

Also Published As

Publication number Publication date
EP0145764A1 (fr) 1985-06-26
WO1985000048A1 (fr) 1985-01-03
GB2141775A (en) 1985-01-03
GB8316595D0 (en) 1983-07-20
GB2141775B (en) 1987-08-05

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Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): AT BE CH DE FR IT LI LU NL SE

17P Request for examination filed

Effective date: 19850701

17Q First examination report despatched

Effective date: 19860414

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: ROCKWELL AUTOMOTIVE BODY COMPONENTS (UK) LTD

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN REFUSED

18R Application refused

Effective date: 19871120

RIN1 Information on inventor provided before grant (corrected)

Inventor name: JEAVONS, PHILIP SWINGEWOOD