Patent ID: 6075294
Filing Date: 2000-06-13
Classification: E05B,G07C

Abstract:
Locking system especially for motor vehicles, consisting of a lock (14), to be actuated by a grip (27) on at least one door (12), or tail gate,where the lock (14) can be switched between two different positions, namely, a secured position which makes the grip (27) inoperativeand another position which allows the grip (27) to operate, in which position the lock (14) is to opened by actuation of the grip (27),and in which a sensor (30-34), located near the grip (27) and connected to an electrical control unit (16), initiates the process by which a data storage medium (20), held by the operator, is interrogated for data by the electrical control unit (16);where the electrical control unit (16) is connected to a send/receiver unit (15) and transmits via this unit the data request to the data storage medium (20) held by the operator,and the data storage medium (20) transmits its data from a data unit (23) via a transmitter (21) to the send/receiver unit (15) in the vehicle,and the send/receiver unit (15) passes the data along to the electrical control unit (16),and the electrical control unit (16), in the event of a positive data identification, orders the release of the lock or locks on at least one door (12), or tail gate of the vehicle (10), whereinthe sensor (30-34) is designed as a capacitance sensor; in that at least a first electrode (30) of the capacitance sensor (30-34) is integrated into the grip (27), whereas a second electrode (31) of the capacitance sensor (30-34) is mounted near the grip (27) on the door as a structural component of the sheet metal construction of the door, so that an electrical field (32) is generated between the electrodes; and in that the capacitance between the two electrodes (30,31) can be changed by the dielectric of a human hand entering the area of the electrical field (32) and thus detected.