Continuously variable transmission device with gear regulation device

A continuously variable transmission device for a two-wheel, three-wheel or four-wheel motorcycle, connectable to a drive shaft, comprising:

• a drive pulley rotatable about a rotation axis, comprising a first half-pulley carrying a first active surface and a second half-pulley carrying a second active surface, a V-belt being arranged between the active surfaces;
• a speed regulator comprising a container, provided with a seat having a bottom surface, and rollers provided with an engagement device, movable by centrifugal action on the bottom surface, moving radially and axially with respect to the bottom surface and thus imposing an axial sliding to said first half-pulley;
• a gear shift regulation device configured to operate on the rollers through an axial action adjustable independently of a quantity of engine revolutions, to influence the centrifugal movement of the rollers and to influence the gear shift;
• said gear shift regulation device comprising:
• an abutment element facing the seat of the container, wherein the rollers are axially arranged between the abutment element and the bottom surface of the seat;
• an axial action device configured to exert on the abutment element an axial action of adjustable intensity;
• wherein in a first configuration in which the gear shift regulation device is off, the axial action device is configured so no axial load is transmitted to the abutment element and the abutment element is not drawn toward the bottom surface;
• and in a second configuration in which the gear shift regulation device is on, the axial action device transmits to the abutment element an axial load moving the abutment element toward the bottom surface.