Patent ID: 6224508
Filing Date: 2001-05-01
Classification: F16H,Y10T

Abstract:
A trunnion of a toroidal continuously variable transmission comprising:a support having a hole therethrough comprising a pulley with a pulley groove and a notch crossing said pulley groove;a first shaft part on top of said support; anda second shaft part on the bottom of said support that is coaxial with said first shaft part;wherein said notch comprises an arc portion and two straight portions, one of said straight portion being formed on one side of said arc portion and the other of said straight portion being formed on the other side of said arc portion,wherein said arc portion and said straight portions are divided by first boundary surfaces, and said notch and said pulley grooves are divided by second boundary surfaces,wherein said hole has an axis,wherein said axis intersects a first imaginary line at a first angle on a sectional plane perpendicular to the axis of said first shaft part, said first imaginary line extending from the center of said first shaft part to said first boundary surfaces,wherein said axis intersects a second imaginary line at a second angle on said sectional plane, said second imaginary line extending from the center of said first shaft part to said second boundary surface, andwherein said first angle is smaller than said second angle.