US 11,913,550 B2
Continuously variable transmission, utility vehicle and CVT case
Yuki Nakamura, Akashi (JP)
Assigned to KAWASAKI MOTORS, LTD., Akashi (JP)
Filed by KAWASAKI MOTORS, LTD., Akashi (JP)
Filed on Apr. 21, 2022, as Appl. No. 17/660,063.
Prior Publication US 2023/0341029 A1, Oct. 26, 2023
Int. Cl. F16H 9/14 (2006.01); B60K 17/08 (2006.01); F16H 57/035 (2012.01); F16H 57/04 (2010.01)
CPC F16H 9/14 (2013.01) [B60K 17/08 (2013.01); F16H 57/035 (2013.01); F16H 57/0416 (2013.01); F16H 57/0489 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A continuously variable transmission comprising:
a CVT mechanism including a driving pulley, a driven pulley, an annular belt wound around the driving pulley and the driven pulley, and a centrifugal fan blade disposed at the driving pulley; and
a CVT case that defines an internal space accommodating the CVT mechanism, wherein
an inner surface of the CVT case includes:
a peripheral surface portion that covers the CVT mechanism from an outer side in a radial direction orthogonal to an axial direction of the driving pulley; and
a guide surface portion that projects toward an inner side in the radial direction from the peripheral surface portion,
the driving pulley includes:
a fixed sheave at which the centrifugal fan blade is disposed; and
a movable sheave opposed to the fixed sheave from a first side in the axial direction, and
the guide surface portion is arranged at a second side in the axial direction beyond a radially outer end of the movable sheave when the movable sheave is located closest to the fixed sheave.