| 摘要 |
PROBLEM TO BE SOLVED: To provide an infinity variable transmission capable of ensuring a large change rate of a radius of rotation of a lever crank mechanism with respect to a rotation angle of a rotational section even on an OD side.SOLUTION: An infinity variable transmission 1 comprises a lever crank mechanism 20 converting a rotational motion of an input shaft 2 to a swing motion of a swing link 18 pivotally supported by an output shaft 3. In the lever crank mechanism 20, a radius-of-rotation adjustment mechanism 4 capable of adjusting a radius of rotation R1 is coupled to the swing link 18 by a connecting rod 15. The radius-of-rotation adjustment mechanism 4 includes a cam disc 5 integrally rotating with the input shaft 2 in an eccentric state; a pinion 70 rotated relatively to and concentric with the input shaft 2; and a rotary disc 76 rotatably supported by the cam disc 5 in an eccentric state and having inner teeth 6b engaged with the pinion 70. Pitch circle radii 70c and 6c of the pinion 70 and the inner teeth 6b in a portion where the pinion 70 is engaged with the inner teeth 6b when the radius of rotation R1 is large are larger than those when the radius of rotation R1 is small. |
