Patent ID: 9676446
Date: 2017-06-13
CPC Classifications: B62M

Claim:
1. Bicycle derailleur gear comprising a kinematic mechanism in the form of a four-bar linkage with a base body and a mobile body connected together through a pair of connecting rods hinged to said base body and to said mobile body at four pin elements, said mobile body carrying a chain guide, said four-bar linkage-kinematic mechanism being associated with derailleur gear actuation means suitable for deforming said four-bar linkage-kinematic mechanism so as to determine a displacement of said mobile body with respect to said base body and consequently a displacement of said chain guide, said derailleur gear actuation means being of the motorised type and comprising a motor casing and an outlet shaft that projects directly from said motor casing, wherein said actuation means command a translation in the axial direction of said outlet shaft within said motor casing; and said actuation means are mounted between distinct components of said four-bar linkage-kinematic mechanism through interposition of at least one tilting interface about a fifth pin element substantially parallel to said pin elements.