JP2014092253A5 - - Google Patents

Claims (1)

Of the rotating shafts, two positions that are separated from each other in the axial direction are supported so as to freely rotate in synchronization with the rotating shaft, with the respective axial side surfaces facing each other having arcuate cross sections. A pair of outer disks;
Around the intermediate portion of the rotating shaft, the axially opposite side surfaces having a circular arc cross section are opposed to the axially one side surfaces of both outer disks, and are integrally supported to freely rotate relative to the rotating shaft. Or an inner disk formed by combining a pair of elements;
A first transmission gear provided at the axially central portion of the inner disk and rotating in synchronization with the inner disk;
A gear transmission device including a second transmission gear meshed with the first transmission gear, and transmitting torque between the inner disk and another rotational shaft arranged in parallel with the rotational shaft;
One pair for each pair of cavities located between both axial side surfaces of the inner disk and one axial side surface of the outer disks with respect to the axial direction, respectively, opposite to each other with respect to the radial direction of each of these disks, A plurality of trunnions provided freely with swing displacement about a tilting shaft that is twisted with respect to the rotating shaft;
A plurality of powers that are rotatably supported on the inner side surface of each trunnion and have a spherical convex surface contacted with both axial side surfaces of the inner disk and one axial side surface of the outer disks. Laura,
A pressing device provided between the rotating shaft and one outer disk of the two outer disks, and pressing the one outer disk toward the other outer disk of the two outer disks; In toroidal type continuously variable transmissions,
Generated based on the meshing of the first and second transmission gears , and with respect to the acting direction of the gear reaction force applied to the inner disk, the peripheral surface of each power roller present on the side on which the gear reaction force acts and the Traction coefficient of each traction part which is a rolling contact part with the side surface of each disk, and a traction part between the peripheral surface of each power roller and the side surface of each disk existing on the side opposite to the side on which the gear reaction force acts The torque is not transmitted between the disks, or a difference is provided when the transmitted torque is low, and the torque increases, and the inner disk moves in the radial direction based on the gear reaction force. A toroidal continuously variable transmission characterized in that, in a displaced state, a difference in traction coefficient between the traction sections is reduced.