Patent ID: 6332857
Filing Date: 2001-12-25
Classification: F16H,Y10T

Abstract:
A loading cam device for a toroidal-type continuously variable transmission comprising:an input shaft including a flange portion at its one end portion;a circular-ring-shaped cam plate supported on the inner surface of the flange portion of said input shaft, the circular-ring-shaped cam plate including, at its inner surface, a drive side cam surface which comprises an uneven surface extending in the circumferential direction of said cam plate;an input side disk including an outer surface and an inner surface, and the input side disk being supported by the input shaft in such a manner that it is allowed not only to shift in the axial direction of the input shaft with respect to the input shaft but also to rotate in synchronization with the input shaft, the outer surface being disposed opposed to the drive side cam surface of the cam plate and formed as a driven side cam surface comprising an uneven surface extending in the circumferential direction of the input side disk, and the inner surface being disposed on the opposite side to the outer surface in the axial direction of the input side disk and formed as a concave-shaped surface having an arc-shaped section;a plurality of rollers respectively held by and between the drive side cam surface and the driven side cam surface; anda retainer for holding the plurality of rollers in a freely rotatable manner,wherein, of the loading cam device, not only the input shaft, the cam plate, the input side disk, the rollers and the retainer which are parts produced separately from one another, are previously assembled so as to have such positional relationship that should be provided after completion of assembly of a toroidal-type continuously variable transmission, before they are actually assembled to the toroidal-type continuously variable transmission, but also the thrust of the loading cam to be generated due to the mutual relative rotation between the cam plate and the input side disk is previously measured.