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1. (WO2018100147) HIGH PERFORMANCE SYNCHRONOUS TRANSMISSION
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Pub. No.: WO/2018/100147 International Application No.: PCT/EP2017/081170
Publication Date: 07.06.2018 International Filing Date: 01.12.2017
IPC:
F16H 63/18 (2006.01) ,F16H 3/093 (2006.01)
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16
ENGINEERING ELEMENTS OR UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
H
GEARING
63
Control outputs to change-speed- or reversing-gearings for conveying rotary motion
02
Final output mechanisms therefor; Actuating means for the final output mechanisms
08
Multiple final output mechanisms being moved by a single common final actuating mechanism
16
the final output mechanisms being successively actuated by progressive movement of the final actuating mechanism
18
the final actuating mechanism comprising cams
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16
ENGINEERING ELEMENTS OR UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
H
GEARING
3
Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
02
without gears having orbital motion
08
exclusively or essentially with continuously- meshing gears, that can be disengaged from their shafts
087
characterised by the disposition of the gears
093
with two or more countershafts
Applicants:
PIAGGIO & C. S.P.A [IT/IT]; Viale Rinaldo Piaggio, 25 56025 Pontedera (PI), IT
Inventors:
MARIOTTI, Walter; IT
LUCA, Nuti; IT
Agent:
LEONE, Mario; IT
CANTALUPPI, Stefano; IT
CURRADO, Luisa; IT
FABRIS, Stefano; IT
GHIRARDI, Valeria; IT
LOCAS, Davide; IT
MORABITO, Sara; IT
SPADARO, Marco; IT
SUSANETTO, Carlo; IT
Priority Data:
10201600012207101.12.2016IT
Title (EN) HIGH PERFORMANCE SYNCHRONOUS TRANSMISSION
(FR) TRANSMISSION SYNCHRONE HAUTE PERFORMANCE
Abstract:
(EN) A synchronous transmission (1) for a motorcycle comprises a primary shaft (51) of mechanical gearbox, and a pair of secondary shafts (52, 53) equipped with one or more secondary gearwheels for transmitting the motion to a hub shaft (75), wherein a desmodromic drum (70) actuates a pair of coupling forks (67, 68) selectively defining the position of respective sliding couplings (65, 66) between primary (51) and secondary shafts (52, 53) to select all speeds of the transmission, the desmodromic drum (70) being in phase with a device (80) for actuating the gearwheels, and wherein the coupling forks (67, 68) are equipped with a cam follower end (69) manoeuvred by said desmodromic drum (70) having a cylindrical surface (79) whereon a single desmodromic track (19) is formed.
(FR) Selon l'invention, une transmission synchrone (1) pour une motocyclette comprend un arbre primaire (51) de boîte de vitesses mécanique, et une paire d'arbres secondaires (52, 53) équipés d'une ou de plusieurs roues dentées secondaires pour transmettre le mouvement à un arbre de moyeu (75), où un tambour desmodromique (70) actionne une paire de fourches d'accouplement (67, 68) définissant sélectivement la position d'accouplements coulissants respectifs (65, 66) entre des arbres primaires (51) et des arbres secondaires (52, 53) pour sélectionner toutes les vitesses de la transmission, le tambour desmodromique (70) étant en phase avec un dispositif (80) d'actionnement des roues dentées, et où les fourches d'accouplement (67, 68) sont équipées d'une extrémité de basculeur (69) manœuvrée par ledit tambour desmodromique (70) comportant une surface cylindrique (79) sur laquelle est formée une seule piste desmodromique (19).
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)