초록 ▼

A continuously variable traction drive transmission comprising a rotating disc mounted on a first shaft and a roller in frictional contact with the face of the disc, the roller being axially movable along a second shaft and thereby radially movable along the disc face to vary the relative rotational

A continuously variable traction drive transmission comprising a rotating disc mounted on a first shaft and a roller in frictional contact with the face of the disc, the roller being axially movable along a second shaft and thereby radially movable along the disc face to vary the relative rotational speeds of the disc and roller. This axial movement is automatically accomplished by pivotally supporting an end of the second shaft and providing a controlled translation to the other end of the second shaft. A mechanism for controlling the contact pressure between the disc face and the roller is also provided. The transmission has low frictional losses and is therefore highly efficient and has a long service life.

대표청구항 ▼

In a continuously variable transmission of the type having a frame; a disc having a planar face; a first shaft rigidly coupled to said disc; means for coupling said first shaft to said frame for rotation about a fixed axis; a second shaft; a roller coupled to said second shaft for rotation therewith

In a continuously variable transmission of the type having a frame; a disc having a planar face; a first shaft rigidly coupled to said disc; means for coupling said first shaft to said frame for rotation about a fixed axis; a second shaft; a roller coupled to said second shaft for rotation therewith, said roller being axially movable along said second shaft; means, coupled to said frame, for rotatably supporting said second shaft, said roller thereon being in frictional contact with said planar face; a third shaft rotatably mounted to said frame; and means for transmitting rotation between said second shaft and said third shaft; the improvement wherein said means for rotatably supporting said second shaft includes first means for supporting an end of said second shaft for pivotal movement about a transverse axis thereof, which transverse axis is perpendicular to the planar face of said disc; and second means for supporting the other end of said second shaft for selective translation in directions to pivot said second shaft about said transverse axis; and motive means, coupled to said means for rotatably supporting, for selectively translating said other end in directions to pivot said second shaft about said transverse axis, such translation causing said roller to move axially of said second shaft, and radially of said disc, thereby varying the relative rotational speeds of said first and third shafts.