Set of sprockets for a bicycle rear wheel and sprocket assembly comprising such a set

摘要

A set of sprockets has a first sprocket with a greater diameter, at least one second sprocket with a smaller diameter and one or more spacer elements operatively arranged between, and in abutment with the sprockets. At least one of the aforementioned sprockets and spacer elements has engagement portions with a freewheel body of a hub of a bicycle rear wheel, the engagement portions defining an ideal circumference for coupling with the freewheel body. The first sprocket rests against the second sprocket, through at least one of the one or more spacer elements, at at least one first contact point arranged at a first radial distance with respect to a longitudinal rotation axis, and at least one second contact point arranged at a second radial distance from the longitudinal rotation axis. The radial distance between the first contact point and the second contact point is at least equal to ⅓ of the radial extension between the circumference and a radially outer end of the second sprocket.

主权项

1. Set of sprockets for mounting on a freewheel body of a hub that is configured to be associated with a bicycle rear wheel, comprising:
a first sprocket with a first diameter, a second sprocket with a diameter that is less than the first diameter, and at least two distinct spacers arranged between the first and second sprockets, wherein at least one of the first and second sprockets has circumferential engagement portions that are configured to engage the freewheel body of the hub of the bicycle rear wheel, and the at least two spacers extend circumferentially about the freewheel body, wherein:(i) an inner spacer of the at least two spacers contacts the second sprocket at a first contact point positioned at a first radial distance from a longitudinal rotation axis, and(ii) an outer spacer of the at least two spacers contacts the second sprocket at a second contact point positioned at a second radial distance from the longitudinal rotation axis,
wherein the inner and outer spacers of the at least two spacers are radially spaced apart with respect to each other, and said first and second contact points are separated by a radial distance that is at least ⅓ of a radial extension between the circumferential engagement portions of the at least one of the first and second sprockets and a radially outer end of the second sprocket as measured from the longitudinal rotation axis.