The present invention relates to a lever device (100) for hydraulically actuating a first braking device or front braking device (101) of a handlebar vehicle, 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), said lever assembly (1) comprising a primary lever (2) rotatably associated with the master cylinder body (21), the primary lever comprising a primary lever thrust portion (7), a secondary lever or hub (3) rotatably associated with the master cylinder body (21), the secondary lever or hub (3) being either directly or indirectly connected to said float or piston (22), the secondary lever (3) comprising a secondary lever counter-abutment portion (9), 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, wherein the primary lever thrust portion (7) is in direct or indirect contact with the secondary lever counter-abutment portion (9), so as to bias, by means of the secondary lever or hub (3), the float or piston (22) at least when it is in the at least a first working position, in which 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, the secondary lever (3) being rotatable about the at least one pivot axis (Y-Y), or an axis parallel thereto, between a secondary lever resting position, and at least one secondary lever actuation position, in which the secondary lever (3) biases a forward movement of the float or piston (22) towards the at least one working position, in which the secondary lever (3) is elastically biased to the resting position by the elastic return element (5), wherein the secondary lever (3) is operatively connectable to a combined braking mechanism (103) actuatable by a combined action lever (104) so that the secondary lever (3) is also rotationally actuatable from the secondary lever resting position to the at least one secondary lever actuation position by actuating the combined action lever (104) connected to a second braking device or rear braking device (102) to activate the first braking device (101) and the second braking device (102) in a combined manner irrespective of an actuation of the primary lever (2), the lever assembly (1) comprises an elastic relative-load element (6) which is connected to the primary lever (2) and/or the secondary lever (3), wherein the elastic relative-load element (6) is interposed between a first primary lever connecting element (17) of the primary lever (2) and a secondary lever connecting element (18), wherein the elastic relative-load element (6) is configured to apply an elastic spacing action which opposes an approach of the secondary lever counter-abutment portion (9) to the primary lever thrust portion (7) or vice versa, so that, when the primary lever (2) and the secondary lever or hub (3) are in the respective resting positions, the elastic relative-load element (6) avoids direct or indirect contact by rubbing between the secondary lever counter-abutment portion (9) and the primary lever thrust portion (7), and so that the primary lever (2) is rotatable about the at least one pivot axis (Y-Y) between the primary lever resting position and the at least one primary lever actuation position by overcoming the elastic spacing action of the elastic relative-load element (6), taking the primary lever thrust portion (7) close to the secondary lever counter-abutment portion (9) until it contacts it either directly or indirectly.


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    Title :

    LEVER DEVICE, BRAKING SYSTEM, SPRING ASSEMBLY


    Additional title:

    HEBELVORRICHTUNG, BREMSSYSTEM, FEDERANORDNUNG
    DISPOSITIF DE LEVIER, SYSTÈME DE FREINAGE, ENSEMBLE RESSORT


    Contributors:

    Publication date :

    2024-10-30


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B62L BRAKES SPECIALLY ADAPTED FOR CYCLES , Bremsen, besonders für Fahrräder oder Motorräder ausgebildet



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