The present invention relates to a lever assembly 1 for a lever device 100 configured to hydraulically actuate a first braking device or front braking device 101 of a handlebar vehicle, said lever device 100 comprising a master cylinder body 21 comprising connecting means 20 for constraining the master cylinder body 21 to a handlebar of the handlebar vehicle, said master cylinder body 21 comprising cylinder walls 55 delimiting a cavity or cylinder 23, at least one float or piston 22, operatively associated with the master cylinder body 21, so as to be adapted to slide inside the cavity or cylinder 23 along a thrust direction X-X, said float or piston 22 comprising a piston bottom 56 defining, with the cylinder walls 55 of the master cylinder body 21, at least one pressure chamber 57 configured to accommodate an actuating fluid of the first braking device or front braking device 101, wherein at least one of the cylinder walls 55 is interrupted to delimit at least one supply channel 58 configured to put the pressure chamber 57 in fluid communication with at least one associable fluid tank 24, wherein the piston bottom 56 is movable with respect to said cylinder walls 55 between at least one end-of-stroke position, in which a volume of said pressure chamber 57 is maximum, and at least a first working position, in which said piston bottom fluidly isolates said pressure chamber 57 said supply channel 58 pressurizing the actuating fluid in the pressure chamber 57, wherein the lever device 100 comprises an elastic return element 5 arranged inside said cavity or cylinder and interposed between said piston bottom 56 and a connecting seat defined by the cylinder walls 55 so as to elastically bias the piston or float 22 to the end-of-stroke position, wherein the lever assembly 1 comprisesa primary lever 2 rotatably associable with the master cylinder body 21 so as to rotate about at least one pivot axis Y-Y, said primary lever 2 being either directly or indirectly connectable to said float or piston 22; the primary lever 2 being rotatable about the at least one pivot axis Y-Y between a primary lever resting position and at least one primary lever actuation position, in which the primary lever 2 either directly or indirectly biases said float or piston 22, wherein the lever assembly 1 comprises an elastic return element 4 of primary lever configured to elastically bias the primary lever 2 to the primary lever resting position, wherein the elastic return element 4 of primary lever is a torsional spring comprising at least a first elastic return element winding 32, a first arm 30 of first elastic return element, and a second arm 31 of first elastic return element extending from said a first elastic return element winding 32, wherein the primary lever 2 comprises a primary lever body 11, wherein the primary lever body 11 defines a primary lever recessed housing or seat 16 adapted to accommodate at least partially the elastic return element 4 of primary lever, wherein the primary lever body 11 comprises at least a first primary lever connecting element 17, wherein the first primary lever connecting element 17 comprises a first primary lever connecting element coupling portion 26a configured to couple the second arm 31 of first elastic return element so that, when the second arm 31 of first elastic return element is coupled to the first primary lever connecting element 17, the elastic return element 4 of primary lever is preassembled to the primary lever 2 irrespective of the connection of the primary lever 2 to the master cylinder body 21.
LEVER ASSEMBLY, LEVER DEVICE
HEBELANORDNUNG, HEBELVORRICHTUNG
ENSEMBLE LEVIER, DISPOSITIF DE LEVIER
2024-10-30
Patent
Electronic Resource
English
IPC: | B60T Bremsanlagen für Fahrzeuge oder Teile davon , VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF / B62K Fahrräder , CYCLES / B62L BRAKES SPECIALLY ADAPTED FOR CYCLES , Bremsen, besonders für Fahrräder oder Motorräder ausgebildet / G05G CONTROL DEVICES OR SYSTEMS INSOFAR AS CHARACTERISED BY MECHANICAL FEATURES ONLY , Steuer- oder Regelvorrichtungen oder Steuer- oder Regelsysteme gekennzeichnet ausschließlich durch mechanische Einzelheiten |