| 摘要 |
To provide a continuously variable transmission adapted to set a sped change ratio in accordance with a tilt angle of a rolling member mediating a torque being transmitted, and to transmit a torque among three elements. The continuously variable transmission mechanism 1 is provided with a rolling member 4 having a smooth outer face and capable of tilting a rotational center axis thereof, and a rotary member arranged to be contacted with a predetermined portion of the outer face of the rolling member in a torque transmittable manner. Specifically, the continuously variable transmission mechanism 1 is configured to vary a rotational speed of the rotary member by changing a rotation radius of a contact point between the rolling member and the rotary member 4 by tilting the rotational center axis of the rolling member. For this purpose, the continuously variable transmission mechanism 1 comprises: a first rotary member 2 and 3 whose outer circumferential face is contacted with the rolling member 4; and a second rotary member 25 and 26 and a third rotary member, which are contacted with the outer face of the rolling member 4 in a torque transmittable manner at a side opposite to a side to which the first rotary member is contacted, and which are adapted to rotate relatively with the first rotary member. |
