Electrical transmission or interconnection systems – Vehicle mounted systems – Automobile
Reexamination Certificate
1998-11-12
2001-01-30
Paladini, Albert W. (Department: 2836)
Electrical transmission or interconnection systems
Vehicle mounted systems
Automobile
C307S010100, C180S287000, C340S542000, C070S256000, C070S257000
Reexamination Certificate
active
06181024
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates to a device for locking and unlocking a door lock provided with a door handle on an object, in particular on a motor vehicle, having a transmitter unit arranged on the object and a transponder unit assigned to the user.
BACKGROUND INFORMATION
A device for keyless locking and unlocking of a door is described in “Keyless Entry System with Radio Card Transponder,” Motoki Hirano et al., IEEE Transactions on Industrial Electronics, vol. 35, 1988, pages 208 through 216. A door with an electronic lock can be locked and unlocked with this known device because a transmitter unit mounted on a motor vehicle queries a response unit (transponder) assigned to the user and causes the electronic lock to be unlocked when the authorized user is identified. One problem encountered with such a device for locking and unlocking is that an additional battery must be provided to permit operation of the device with the electronic lock in the event the vehicle battery is dead.
SUMMARY OF THE INVENTION
An object of the present invention is to provide a device so that it will not need any additional battery while nevertheless making it possible to open the door or keep it locked even in emergency situations.
According to the present invention, the door lock is designed as an electromechanical lock which can be locked and unlocked optionally either with a manually operable key and/or a button arranged on the inside or electronically with the transmitter unit and transponder.
No additional power supply is necessary because manual override is possible due to the alternative options of locking and unlocking either manually with a key and/or a button on the inside or electronically with the transmitter unit and transponder. A traditional electromechanical lock, such as that provided with a central locking system can be used with simple modifications for the alternative operation.
The operation of electronic locking and unlocking is simple due to the fact that a manually operable triggering unit is provided in the area of the door handle to initialize the query between the transmitter unit, including an access authorization module, and the transponder. It is advantageous for ease of handling if the triggering unit is linked to the door handle.
One embodiment that is advantageous for ease of operation involves the triggering unit being designed as a pushbutton. Electronic unlocking by triggering the pushbutton takes place in one direction, while opening the door with the door handle takes place in the opposite direction, so that two clearly separate operating procedures are differentiated, and a short period of time is required for the query protocol and mechanical unlocking as a result of the reverse movement.
One possible advantageous arrangement is to arrange the triggering unit at one of the two ends of the door handle.
If the door lock is part of a vehicle's central locking system, it is possible to retrofit an existing system to electronic operation with a transmitter and transponder using simple means, while yielding advantageous operation at the same time.
A reversal of movement between operation of the triggering unit and opening with the door handle is ensured by the fact that the triggering unit can be operated by depressing it, and the door handle can be operated by pulling it to open the door.
If an attenuator is built into the door handle, a lag time for automatic interrogation of the transponder and unlocking is ensured.
REFERENCES:
patent: 4354189 (1982-10-01), Lemelson
patent: 4800361 (1989-01-01), Greif
patent: 5708307 (1998-01-01), Iijima et al.
patent: 5887466 (1999-03-01), Yoshizawa et al.
patent: 39 00 494 A1 (1990-07-01), None
patent: 42 21 142 C2 (1994-01-01), None
patent: 43 30 118 C1 (1995-01-01), None
patent: 196 19 975 C1 (1996-05-01), None
patent: 196 26 914 C1 (1996-07-01), None
patent: 196 17 038 A1 (1997-11-01), None
patent: 2 674 895 (1991-04-01), None
Keyless Entry System with Radio Card Transponder, Motoki Hirano et al., IEEE Transactions on Industrial Electronics, vol. 35, 1988, pp. 208-216.
Geil Andreas
Jehlicka Jörg
Schmitz Stephan
Kenyon & Kenyon
Paladini Albert W.
Robert & Bosch GmbH
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