Patent ID: 8814195
Filing Date: 2014-08-26
Classification: B62K

Abstract:
1. Folding bicycle, particularly a pedal-assist bicycle, comprising a frame with a down tube with a back end with a seat tube and a front end with a steering tube susceptible to housing a stem connected in an upper zone to a handlebar and in a lower zone to a front fork, a back fork coupled to the back end of the down tube and a bottom bracket; a folding mechanism which allows folding the bicycle about an articulating pin to at least one folded position; a locking mechanism for keeping the bicycle in said folded position; wherein the bottom bracket is integrated in a lower portion of a triangular connecting part emerging in the lower zone of a front portion of the back fork; the connecting part comprises an upper side with a back portion attached in the lower zone to the front portion of the back fork and with at least one cantilevered axial extension which extends below and is connected to the down tube in an unfolded position of the bicycle; the axial extension comprises at least one front end articulated in the lower zone to the down tube by means of a transverse shaft, such that the back fork and the connecting part form a pivoting block susceptible to rotating jointly in a vertical plane towards the steering tube to said folded position; the front portion of the back fork is connected to the back end of the down tube in the unfolded position of the bicycle.