US 12,296,918 B2
Tilting saddle-riding motor vehicle with two tilting front steered wheels and two non-tilting rear driving wheels
Andrea Raffaelli, Pontedera (IT)
Assigned to PIAGGIO & C. S.P.A., Pontedera (IT)
Appl. No. 18/560,461
Filed by PIAGGIO & C. S.p.A., Pontedera (IT)
PCT Filed May 9, 2022, PCT No. PCT/IB2022/054263
§ 371(c)(1), (2) Date Nov. 13, 2023,
PCT Pub. No. WO2022/238855, PCT Pub. Date Nov. 17, 2022.
Claims priority of application No. 102021000012131 (IT), filed on May 12, 2021.
Prior Publication US 2024/0246630 A1, Jul. 25, 2024
Int. Cl. B62K 5/10 (2013.01); B62K 5/01 (2013.01); B62K 5/08 (2006.01)
CPC B62K 5/10 (2013.01) [B62K 5/01 (2013.01); B62K 5/08 (2013.01)] 21 Claims
OG exemplary drawing
 
1. A tilting saddle-riding motorcycle comprising:
a frame;
a steering column integral with a handlebar and rotatably accommodated in a steering tube integral with the frame;
a left front steered wheel and a right front steered wheel connected to the frame with the interposition of at least one tilting four-bar linkage; wherein the left front steered wheel and the right front steered wheel are adapted to perform a tilting movement; and wherein said at least one tilting four-bar linkage comprises a plurality of components pivoted to one another around pivot axes parallel to one another, the deformation of said at least one tilting four-bar linkage allowing the frame, the left front steered wheel and the right front steered wheel to take a tilted position during travel;
a left rear driving wheel and a right rear driving wheel; supported by a non-tilting rear carriage, on which a propulsion unit of the motor vehicle is arranged;
a tilting joint, which connects the non-tilting rear carriage to the frame; wherein the tilting joint defines a roll axis around which the frame rotates relative to the rear carriage; and
a rear suspension, adapted to allow a springing movement of the frame relative to the rear carriage, and a suspension hinge defining a suspension axis extending in a transverse direction relative to the direction of travel of the vehicle, the frame and the rear carriage being adapted to perform springing movements around the suspension axis.