GEAR TO MOVE SLIDING DOOR Russian patent published in 2003 - IPC

FIELD: railway and automobile transport. SUBSTANCE: gear includes guiding rod with carriage mounted on rod for longitudinal movement, bearing-guiding beam, pantograph for sliding leaf and lead screw with sliding nut. Lead screw is connected to electric drive. Rod, beam and lead screw are placed in direction of sliding of leaf in parallel one another and are fixed immobile relative to door frame. Pantograph is put on carriage on two hinges, is fitted with joints for connection to leaf and is hinged by tie-rod to coupling fixing it that is mounted on end of carriage for longitudinal movement and fixing. Rotary tie-rod is hinged to pantograph and sliding nut. Carriage carries roller resting on surface of beam to counterbalance moment of gravity force of leaf in its vertical plane. EFFECT: simplified design of gear, diminished sluggishness and improved control over door leaf. 3 cl, 4 dwg