Sliding roof device for vehicle

摘要

Slide door opening and closing device for vehicles includes at least one movable panel (21) to open or close at least one opening portion (12) provided at a vehicle roof (11), a pair of guide rails (6) provided at both sides in width direction of the opening portion and extending in longitudinal direction of the vehicle, an operation mechanism (8) guided by the guide rail and supporting the movable panel, at least one drive device (50) driving the operation mechanism, and at least one spur tooth rack belt (25,26) connecting the operation mechanism with the drive device characterized in that the drive device (50) includes at least one drive gearwheel (52) engaging with the spur gear rack belt (25,26), and the drive gearwheel is formed with variable tooth thickness along the gear width. <IMAGE>