Patent ID: 9039027
Filing Date: 2015-05-26
Classification: B62K

Abstract:
1. A foldable bicycle comprising a frame made up of a rear portion supporting a rear wheel about a rear axis of rotation, of a front portion supporting a front wheel about a front axis of rotation, and of a hinge system arranged between the rear portion and the front portion so as to position the bicycle either in an unfolded position in which the front portion extends forwards and in alignment with the rear portion, or in a folded position in which the front portion is folded back against the rear portion, wherein the hinge system comprises a first part arranged on the rear portion and provided with a first plane surface, a second part arranged on the front portion and provided with a second plane surface that is in abutment in direct or indirect manner against the first plane surface, a pivot coupling arranged between the first part and the second part about a pivot axis that extends perpendicularly to said first and second plane surfaces, at least one stud, slide means arranged between the stud and one of the first and second parts so as to slide the stud either into a projecting position in which it projects from the first or the second plane surface or into a refracted position in which it is retracted inside said first or second parts, actuator means for actuating said at least one stud, which means are configured to slide said stud either into the projecting position or into the retracted position, and at least one orifice configured on the other of the first and second parts to open out in the first or the second plane surface and to receive said at least one stud in its projecting position at least when the bicycle is in its unfolded position, wherein the first part is provided with at least one bore opening out in the first plane surface and extending along an axis that is substantially parallel to the pivot axis, which bore slidably receives a stud, a spring being arranged inside the bore and being configured to exert thrust on the stud and to slide said stud into its projecting position, a traction system being configured to pull on the stud and to slide said stud into its refracted position.