Patent ID: 7383924

Claim:
A machine room-less elevator system having an elevator shaft and not having any machine room in an upper part of the elevator shaft, said machine room-less elevator system comprising: a car guided by car guide rails for vertical movement in the elevator shaft; a counterweight guided by counterweight guide rails for vertical movement in a space extending along the rear wall of the elevator shaft behind the car; a traction sheave disposed in a space above the car at the top of the elevator shaft on either the right-hand or the left-hand side of the car; a driving device for driving the traction sheave for rotation; a base frame fixedly supporting the driving device; base frame support means fixed to one of the car guide rails and the counterweight guide rails; and vibration-isolating means interposed between the base frame and the base frame support means, wherein the base frame includes: a side support beam perpendicular to the rear wall of the elevator shaft and extending along the side wall of the elevator shaft, a rear support beam laterally extending along the rear wall of the elevator shaft, a diagonal support beam parallel to the axis of rotation of the traction sheave and fixedly supporting the driving device thereon, and connecting members connecting the side, the rear and the diagonal support beam.