Tilting saddle motor vehicle with lightened rolling four-bar linkage
AssigneePiaggio & C. S.P.A.
InventorsWalter Rosellini, Jacopo Roncoroni, Emanuele Savino
Life of this patent
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Abstract
A tilting motor vehicle having a pair of steering front wheels (17A, 17B), linked to the frame (3) of the motor vehicle (1) through a rolling four-bar linkage (21). The rolling four-bar linkage comprises an upper crosspiece (23) and a lower crosspiece (25) linked to each other by uprights (27A, 27B) forming the rocker arms of the four-bar linkage. One of the two crosspieces consists of a front half-crosspiece and a rear half-crosspiece, both hinged to the two uprights. The other half-crosspiece having two half-crosspieces, only one of which is hinged at the ends thereof to the two uprights, while the other half-crosspiece is shorter, and it is not hinged to the uprights.
Claims9
A tilting saddle motor vehicle, comprising:
- a frame;
- a rear drive wheel;
- a front left steered wheel with a left shock absorbing device;
- and
- a front right steered wheel with a right shock absorbing device;
- a rolling four-bar linkage, comprising:
- an upper crosspiece, hinged at an intermediate point to a central element of the frame;
- wherein the upper crosspiece comprises a front half-crosspiece arranged in front of the central element of the frame and a rear half-crosspiece arranged behind the central element of the frame;
- wherein the front half-crosspiece and the rear half-crosspiece form a single rigid body, through which the central element of the frame extends;
- a lower crosspiece, hinged at an intermediate point to the central element of the frame;
- wherein the lower crosspiece comprises a front half-crosspiece arranged in front of the central element of the frame and a rear half-crosspiece arranged behind the central element of the frame;
- wherein the front half-crosspiece and the rear half-crosspiece form a single rigid body, through which the central element of the frame extends;
- a left upright hinged to a left end of the upper crosspiece and to a left end of the lower crosspiece;
- wherein the left steered wheel is linked to the left upright so as to rotate about a left steering axis;
- a right upright hinged to a right end of the upper crosspiece and to a right end of the lower crosspiece;
- wherein the right steered wheel is linked to the right upright so as to rotate about a right steering axis, wherein:
- a first of said front half-crosspiece and rear half-crosspiece of a first of said upper crosspiece and lower crosspiece is longer than a second of said front half-crosspiece and rear half-crosspiece of the first crosspiece, and is directly hinged to the left up-right through a left hinge and to the right upright through a right hinge;
- a second of said front half-crosspiece and rear half-crosspiece of said first crosspiece is not directly hinged to the left upright and to the right upright;
- and
- both said front half-crosspiece and rear half-crosspiece of a second of said upper crosspiece and lower crosspiece are directly hinged to the left upright through left hinges and to the right upright through right hinges.
Dependencies are inferred from the claim text.