Driving wheel for a bicycle or the like, including a sensor for measuring the transmitted torque, and a bicycle equipped with such a wheel

A driving wheel for a bicycle or the like, in which a mechanism for driving a hub of said wheel, utilizing a sprocket(s) receiving a driving chain, comprises a device for measuring the transmitted torque or a magnitude associated therewith, said wheel being characterized in that:

• there is provided between a first member (15, 15a) driven in rotation by the sprocket(s) (10, 12) and a second member (16, 16a) axially slidable on the fixed axle (8) of the hub (3) and rotatably coupled with said first member (15, 15a) and with the hub (3), at least one cam (27) adapted for causing an axial thrust which tends to move apart said two members as a result of the rotation imparted to said members,
• and in that means (29) for sensing the value of a thrust strain are arranged in registry with one of said members, said sensing means (29) being carried by a non-rotating part and being connected to a measuring system adapted for determining, from the data issuing from said sensing means, the value of the driving torque applied to said wheel, or of another magnitude associated therewith.