Continuously variable transmission
First Claim
1. An input torque system for a continuously variable transmission having a longitudinal axis, the input torque system comprising:
- an input shaft having a splined flange;
a torsion disc having a splined bore;
wherein the splined flange and splined bore are adapted to couple together operationally to transmit torque from the input shaft to the torsion disc; and
a first load cam disc coupled to the torsion disc;
a plurality of rollers coupled to the first load cam disc;
a second load cam disc coupled to the plurality of rollers;
wherein the plurality of rollers is positioned axially between the first load cam disc and the second load cam disc;
an input disc coupled to the second load cam disc, the input disc having a plurality of lubrication ports arranged on an outer periphery of the input disc; and
a plurality of balls arranged angularly about the longitudinal axis, each ball in contact with the input disc, each ball having a tiltable axis of rotation.
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Accused Products
Abstract
A continuously variable transmission (CVT) having a main shaft configured to support and position various components of the CVT. Shift cam discs cooperate with ball-leg assemblies to shift the transmission ration of the CVT. Load cam discs, a torsion disc, rolling elements, and a hub cap shell are configured to generate axial force, transmit torque, and manage reaction forces. In one embodiment, a splined input shaft and a torsion disc having a splined bore cooperate to input torque into the variator of the CVT. Among other things, various ball axles, axle-ball combinations, and reaction force grounding configurations are disclosed. In one embodiment, a CVT having axial force generation means at both the input and output elements is disclosed.
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Citations
10 Claims
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1. An input torque system for a continuously variable transmission having a longitudinal axis, the input torque system comprising:
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an input shaft having a splined flange; a torsion disc having a splined bore; wherein the splined flange and splined bore are adapted to couple together operationally to transmit torque from the input shaft to the torsion disc; and a first load cam disc coupled to the torsion disc; a plurality of rollers coupled to the first load cam disc; a second load cam disc coupled to the plurality of rollers; wherein the plurality of rollers is positioned axially between the first load cam disc and the second load cam disc; an input disc coupled to the second load cam disc, the input disc having a plurality of lubrication ports arranged on an outer periphery of the input disc; and a plurality of balls arranged angularly about the longitudinal axis, each ball in contact with the input disc, each ball having a tiltable axis of rotation. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification