PULLEY FOR V-BELT TYPE CONTINUOUSLY VARIABLE TRANSMISSION AND CONTINUOUSLY VARIABLE TRANSMISSION

摘要

PROBLEM TO BE SOLVED: To provide compact pulleys for a belt-type continuously variable transmission excellent in wear resistance of the sheave surfaces, durable for use in a high torque area, and a belt-type continuously variable transmission. ;SOLUTION: The pulleys are used for belt-type continuously variable transmissions having a metallic belt formed by lapping sheet elements in the direction of their thickness laid over between a input side pulley with a groove width variable in the direction of the input shaft, and an output side pulley with a groove width variable in the direction of the output shaft. The surface roughness of the conical sheave surface to be frictionally in contact with the metallic belt is set 0.1 t 0.5 μm in a center line average roughness Ra, and the surface hardness of the conical sheave surface is set ≥850 Hv in micro- Vickers hardness. For the belt-type continuously variable transmission, at least the input side pulley employs the above type pulley.;COPYRIGHT: (C)2000,JPO