Piaggio&c. S.p.a.

Piero Soatti

Alessandro Bonora

Stivi Peron

Roberto Calo′

Roberto Calo'

Francesco Bellato

Massimiliano Boschiero

Damiano Bellan

Massimiliano Piccioli

The present invention relates to a method for determining an operative shift configuration of a drive mechanism () of a gearbox (G) of a saddle-ride type vehicle (). In particular, this method is applied to a drive mechanism () comprising a pedal shift lever () and a quick-shifter device () that connects, directly or indirectly, the lever to the gearbox, where this device includes a rod () and first sensor means (SM, SM-SM) that detect the variation of the tension state of said rod () following a gear shifting. The method according to the invention includes acquiring a first signal (S) generated by said first sensor means and determining, based on said first signal, whether the rod is in a traction tension state or in a compression tension state. The method also includes acquiring at least a second signal (S) generated by second sensor means (SM) and determining, based on this second signal (S), the gear engaged following said gear shifting and/or the direction of said gear shifting. Finally, the method includes determining the operative shift configuration of the drive mechanism based on the tension state determined in the step B) and the gear engaged and/or based on the direction of said gear shifting determined in the step D).

Method for determining an operative shift configuration of a drive mechanism of a gearbox of a saddle-ride type vehicle

The present invention relates to a saddle-riding vehicle, preferably an endurance-type vehicle. The vehicle comprises a steering tube to which a steering assembly that controls a front wheel is rotatingly connected. The vehicle comprises a frame comprising a central part () to which is hinged a first end (A) of a fork () which also comprises a second end (B) rotatingly connected to a rear wheel (). This frame also comprises a front part () extending between the steering tube () and said central part (), wherein this front part () comprises a first frame side (A) and a second frame side (B) separated in the direction of the width of the vehicle and made of a first metallic material. The vehicle according to the invention is characterised in that it comprises at least a pair of connecting plates (A-B) wherein a first plate (A) connects said engine assembly () to said first frame side (A) and a second plate (B) that connects said engine assembly () to said second frame side (B). These plates (A-B) are made of a second metallic material having a modulus of elasticity lower than that of said first material constituting said frame sides (A,B) of said front part () of the frame ().

Saddle-riding vehicle provided with a frame having reduced stiffness against yaw movements

A supporting structure () for phonic wheel sensor () and brake caliper (), comprises: a main body () fastened or which can be fastened to a stem of a fork (F) of a motorbike; a wheel support () connected to said main body () for supporting a wheel of the motorbike; and an extension () which develops from said main body () and comprises a fastening device () for a brake caliper (). Two pass-through openings () are formed in said extension (), a first pass-through opening () for housing the phonic wheel sensor () and a second pass-through opening () for the passage of a cable () of the phonic wheel sensor ().

Supporting system for a phonic wheel sensor

A motorbike including an assistant system to a braking system, of the type comprising a phonic wheel, a phonic wheel speed sensor (), and a related cable () for the transmission of a signal of said speed sensor (), a supporting structure, for supporting the phonic wheel speed sensor () and a brake caliper (), comprises: a main body () fastened or which can be fastened to a stem of a fork (F) of a motorbike; a wheel support () connected to said main body () for supporting a wheel of the motorbike; an extension () which develops from said main body () and comprises a fastening device () for a brake caliper (), wherein said extension () comprises a pair of ribs () defining opposite edges thereof, a reinforcing plate () extending between said pair of ribs (), said ribs () forming thickenings of the extension () with respect to said reinforcing plate (), and a pass-through opening () for housing the phonic wheel sensor () and defined in said reinforcing plate () in an intermediate position between said ribs (); and a cable fastening device () fastened to an upper portion of said brake caliper ().

Motorbike with a phonic wheel sensor supporting structure

A muffler () for motor vehicles comprising an intake pipe () of the exhaust gases that separates, at a fork (), into a main pipe () and a secondary pipe (), a muffler body () which delimits an expansion volume () and houses at least partly the main pipe () and the secondary pipe (), wherein the intake pipe () of the exhaust gas is in fluid continuous connection with the main pipe () through the secondary pipe (), and wherein the main pipe () comprises, downstream of the fork (), a throttle valve () which allows or prevents a further fluidic connection of the intake pipe () of exhaust gas with the main pipe (), and an output of the exhaust gases (), for the expulsion of the gases from the muffler pipe ().

Muffler for motor vehicles

The rear of a motorcycle with cardan suspension comprising a rear frame, a fork, hinged to said frame about a hinging axis, the fork rotatably supporting the rotation pin of a rear wheel of the motorcycle around a rotation axis, the fork supporting a cardan-shaft transmission comprising at least one first transmission shaft, suitable to be connected to a power take-off of an associable engine, at least one final shaft provided with a pinion rotatably connected to said rear wheel, wherein between the first transmission shaft and the final shape is interposed a first cardan joint, a floating arm that supports said pinion of the final shaft, the arm being floating around said rotation axis of the rear wheel. The floating arm comprises a cup portion arranged coaxially to the rotation pin and having at least an inner end that houses and supports said pinion.

Rear of a motorcycle with cardan-shaft transmission and related motorcycle

A motorcycle transmission includes a swingarm which extends from one hinging end to a motorcycle chassis, defining an oscillation axis, at one connection end to a wheel, a homokinetic joint arranged on the side of the hinging end, and a geared coupling positioned on the side of the connection end. The homokinetic joint kinematically reciprocally connects a first end of an input shaft, connected to a power take-off, and a second end of an output shaft mechanically connected to the geared coupling. The geared coupling transmits motion to the wheel. The homokinetic joint performs an instantaneously constant transmission ratio between the first and the second end. The homokinetic joint is offset to the hinging end of the swingarm, in a vertical direction perpendicular to the support surface of the wheel and permits oscillation of the output shaft between a stroke start and a stroke end, parallel to the oscillation axis.

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Pisa, Italy

Piero Soatti