PNEUMATIC DRIVE OF VEHICLE DOORS WITH PASSENGER ELECTRONIC ANTI-SEIZURE PROTECTION Russian patent published in 2009 - IPC B60J5/06 E05F15/06 

FIELD: automotive industry.

SUBSTANCE: proposed pneumatic drive comprises pneumatic cylinder controlled by air control valve, micro switches or end position pickups that locate door end positions and anti-seizure system with electronic unit. The latter operates as a timer self-tuning to door flap complete stroke between two extreme positions and allows for possible changes in open-close time intervals by measuring and memorising them to generate appropriate signal with comprehensive tolerance for nest operating cycle. Tolerance exceeded, pneumatic drive switches over to opposite direction. Besides, electronic unit performs double locking of open-close automatic function by de-energising electronic unit output power key with door in extreme position. Electronic key can be used in system protecting travel pickup with a rack, which can switch over to self-tuning timer operation without rack but with end position pickup independent of said rack.

EFFECT: simpler design, higher reliability.

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