TOROIDAL TYPE CONTINUOUSLY VARIABLE TRANSMISSION

摘要

PROBLEM TO BE SOLVED: To provide a toroidal type continuously variable transmission capable of securing the durability of a preload spring and increasing the durability of a structural member imparting a preload to the preload spring. SOLUTION: A disc spring 42 is formed by providing a clearance with an axial length S1 on the inner diameter side between one set of disc spring group 72a and the other set of disc spring group 72b. The clearance S1 is a margin when the disc spring 42 is elastically deformed in the axial direction (hereafter, referred to as a margin). Furthermore, where a clearance formed between the inner diameter side portion extending from the cylindrical part 56 of a cam plate 10a in the radial inner direction and an inner diameter side portion extending from the outer peripheral surface of the cylindrical part 67 of an outer ring 63 in the radial inner direction is S2, a margin S1 for the disc spring 42 is set to a large value (S2