Unlocking system for automobile vehicle doors and the like

• US 7,224,259 B2
• Filed: 02/12/2003
• Issued: 05/29/2007
• Est. Priority Date: 02/12/2002
• Status: Expired due to Fees

• Current Assignee: Arvinmeritor Light Vehicle Systems FRA (Meritor, Inc. (Nevada))
• Original Assignee: Arvinmeritor Light Vehicle Systems FRA (Meritor, Inc. (Nevada))
• Inventors: De Vries, Pascal, Burkat, Frederic, Belmond, Jean-Marc, Chonavel, Sylvain, Chu, Yi Hwa
• Primary Examiner(s): Garber; Wendy B.
• Assistant Examiner(s): YANG, CLARA I
• Application Number:
  US10/365,714
• Publication Number:
  US 20030155779A1
• Time in Patent Office: 1,567 Days
• Field of Search: 340/5.72, 702/56, 702/57
• US Class Current: 340/5.72
• CPC Class Codes: E05B 81/06 using rotary motors
• CPC Class Codes: E05B 81/14 operating on bolt detents, e.g. for unlatching the bolt
• CPC Class Codes: E05B 81/90 Manual override in case of power failure
• CPC Class Codes: E05B 85/01 Mechanical arrangements specially adapted for hands-free locking or unlocking handles with means for initiation of a hands-free locking or unlocking process E05B81/78
• CPC Class Codes: G07C 2009/00603 by power transmission from lock
• CPC Class Codes: G07C 2009/00777 by induction
• CPC Class Codes: G07C 9/00309 operated with bidirectional data transmission between data carrier and locks
• CPC Class Codes: Y10T 292/1047 Closure
• CPC Class Codes: Y10T 292/1082 Motor
• CPC Class Codes: Y10T 70/5973 Remote control
• CPC Class Codes: Y10T 70/5978 With switch

Abstract

A system for unlocking a key cylinderless automobile vehicle door includes a portable object having an identifier and a circuit for interrogating the object. The circuit powers the object and interrogates the object when it is outside the vehicle. The interrogating circuit supplies a signal authorizing unlocking of the door as a function of the identifier. A standby power supply, which is separate from the main power supply of the vehicle, also powers the circuit and the object. As a result, the vehicle door does not require a key cylinder while still ensuring unlocking even if the main power supply of the vehicle fails.

Claims

1. A system for unlocking a key cylinderless vehicle closure, the system comprising:

an electric lock with an electrical release and a mechanical release, wherein the mechanical release can be enabled and disabled;

a selective coupling mechanism that enables the mechanical release of the electric lock if the electric lock fails;

a portable object having an object identification;

an interrogating circuit that powers and interrogates the portable object, wherein the interrogating circuit includes a control logic that controls operation of the electric lock, the control logic sends a control signal to the electric lock authorizing the electric lock to be unlocked based on the object identification, and the control signal is sent to the selective coupling mechanism in conditions of power supply failure to enable the mechanical release of the electric lock based on the object identification; and

a power supply that supplies power to the interrogating circuit.

2. The system of claim 1, wherein the control logic supplies a software unlocking signal to the electric lock in normal operating conditions to electrically release the electric lock.

3. The system of claim 1, wherein the portable object has a first set of contacts and the interrogating circuit has a second set of contacts, wherein the first set of contacts and the second set of contacts are adapted to be coupled to each other.

4. The system of claim 1, further comprising a standby power supply.

5. The system of claim 4, wherein the interrogating circuit is powered by the standby power supply.

6. The system of claim 4, further comprising standby electronic circuitry powered by the standby power supply and adapted to enable the mechanical release with the electric lock.

7. The system of claim 6, further including a sensor, wherein the standby electronic circuitry has a low-power mode that terminates upon reception of a signal that corresponds to the sensor detecting operation of an inner lock release control or an external lock release control.

8. The system of claim 1, further comprising an unlocking mechanism that is responsive to an unlocking signal originating from the control logic.

9. The system of claim 8, wherein the mechanical release is enabled by operating the unlocking mechanism.

10. The system of claim 8, wherein the unlocking mechanism comprises an electric motor having electric power no greater than 10 W.

11. The system of claim 8, further comprising a main power supply of a vehicle and a standby power supply separate from the main power supply of the vehicle.

12. The system of claim 11, wherein the unlocking mechanism is powered by the standby power supply.

13. The system of claim 1, wherein the mechanical release only controls release from inside a vehicle.

14. The system of claim 1, wherein the portable object is a card.

15. A system for unlocking a key cylinderless vehicle closure, the system comprising:

an electric lock with an electrical release and a mechanical release, wherein the mechanical release can be enabled and disabled;

a selective coupling mechanism that enables the mechanical release of the electric lock if the electric lock fails;

a portable object having an object identification;

an interrogating circuit that powers and interrogates the portable object, wherein the interrogating circuit powers the portable object remotely when interrogating the portable object, wherein the interrogating circuit includes a control logic that controls operation of the electric lock, the control logic sends a control signal to the electric lock authorizing the electric lock to be unlocked based on the object identification, and the control signal is sent to the selective coupling mechanism in conditions of power supply failure to enable the mechanical release of the electric lock based on the object identification; and

a power supply that supplies power to the interrogating circuit.

16. A key cylinderless vehicle closure, comprising:

an electric lock with an electrical release and a mechanical release, wherein the mechanical release can be enabled and disabled;

a selective coupling mechanism that enables the mechanical release of the electric lock if the electric lock fails;

an interrogating circuit that interrogates a portable object disposed outside the key cylinderless vehicle closure, wherein the interrogating circuit includes a control logic that sends a control signal to the electric lock authorizing the electric lock to be unlocked based on an object identification in the portable object and the control signal is sent to the selective coupling mechanism in conditions of power supply failure to enable the mechanical release of the electric lock based on the object identification in the portable object; and

a power supply that supplies power to the interrogating circuit.

17. The vehicle closure of claim 16, wherein the control logic supplies a software unlocking signal to the electric lock in normal operating conditions to electrically release the electric lock.

18. The vehicle closure of claim 16, further comprising a main power supply of a vehicle and a standby power supply separate from the main power supply of the vehicle, wherein the interrogating circuit is powered by the standby power supply.

19. The vehicle closure of claim 18, further comprising a sensor and standby electronic circuitry powered by the standby power supply and adapted to enable the mechanical release with the electric lock, wherein the standby electronic circuitry has a low-power mode that terminates upon reception of a signal that corresponds to the sensor detecting operation of an inner lock release control or an external lock release control.

20. A vehicle with a key cylinderless closure, the vehicle comprising:

an electric lock including an electrical release and a mechanical release, wherein the mechanical release can be enabled and disabled;

a selective coupling mechanism that enables the mechanical release of the electric lock if the electric lock fails;

an interrogating circuit that powers and interrogates a portable object disposed outside the vehicle, wherein the interrogating circuit includes a control logic that sends a control signal to the electric lock authorizing the electric lock to be unlocked based on an object identification in the portable object and the control signal is sent to the selective coupling mechanism in conditions of power supply failure to enable the mechanical release of the electric lock based on the object identification; and

a power supply that supplies power to the interrogating circuit.