Patent ID: 8066101

Claim:
A belt device for driving an elevator in which an elevator rope, one end of which is provided with an elevator cage and the other end is provided with a balance weight, is entrained about a sheave, and the elevator cage can be moved up and down by pressing a reverse surface of a belt stretched over a plurality of pulleys including a driving pulley into contact with the elevator rope in an arcuate region of the elevator rope wound around the sheave, and allowing the driving pulley to be rotatably driven, and a plurality of circumferential channels ( 40 , 52 ), in which the elevator rope ( 6 ) engages, are formed respectively in the circumferential surface of the sheave ( 5 ) and the reverse surface of the belt ( 4 ), and the reverse surface of the belt ( 4 ) is pressed directly into contact with the elevator rope ( 6 ) only, without being in contact with the surface of the sheave ( 5 ), and the belt is set to be 0.6 to 3.0 in coefficient of friction of a contact surface with at least the driving pulley, and the contact surface is constructed of a rubber having a hardness (IRHD) of 65 to 95, and a wear resistance of 5 to 300 mm 3 in Taber wear (ISO5470-1-1999, under conditions: a wear ring of H18; a load of 1 kg; and 1000 rpm).