Patent ID: 6328133
Filing Date: 2001-12-11
Classification: B66B

Abstract:
An elevator door with a clutch device comprising:a hatch door provided at each floor in a building for passengers to board on/off an elevator car, the hatch door having a pair of clutch rollers installed thereto;a car door installed to the elevator car for passengers to board on/off the elevator car, the car door having a pair of clutch plates installed thereto, the pair of the clutch plates passing through or interposed between the pair of the clutch rollers;a door motor for giving force to move the car door;a reduction pulley for reducing rotating speed of the door motor;a plurality of links connected to the reduction pulley for converting rotation of the reduction pulley to angular movement;a cam link having one end rotatably connected to one of the links, the cam link including a curved portion having various curvatures formed at the other end thereof; anda rotating link positioned between the pair of the clutch plates, the rotating link being rotatably connected to one of the clutch plates and in contact with the other of the clutch plates, the rotating link contacting with the curved portion of the cam link at its mediate portion,wherein angular movement of the cam link pushes the rotating link along the curved portion, which brings the pair of the clutch plates into contact with the pair of the clutch rollers respectively.