US 11,987,220 B2
Gear box and self-propelled wheeled vehicle equipped with a gear box
Sébastien Bray, Les Epesses (FR); and Fabien Guiroult, Saint Hilaire le Vouhis (FR)
Assigned to FRANCE REDUCTEURS, Les Herbiers (FR)
Appl. No. 18/016,340
Filed by FRANCE REDUCTEURS, Les Herbiers (FR)
PCT Filed Jun. 23, 2021, PCT No. PCT/FR2021/051146
§ 371(c)(1), (2) Date Jan. 14, 2023,
PCT Pub. No. WO2022/018335, PCT Pub. Date Jan. 27, 2022.
Claims priority of application No. 20 07661 (FR), filed on Jul. 21, 2020.
Prior Publication US 2023/0271592 A1, Aug. 31, 2023
Int. Cl. F16D 49/16 (2006.01); B60T 1/06 (2006.01); F16D 65/22 (2006.01); F16D 125/64 (2012.01)
CPC B60T 1/062 (2013.01) [F16D 49/16 (2013.01); F16D 65/22 (2013.01); F16D 2125/64 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A gearbox comprising:
at least one gearbox body delimiting at least one cavity and housed at least partly inside the cavity,
at least one output shaft, and
a braking device mounted on a rotary shaft,
said braking device comprising two activatable brakes, two stops coupled mechanically to one another and one on each side of said brakes, and a control member for driving said brakes in movement in the direction away from or toward one another for the brakes to pass from an inactive state to an active state, this control member, common to the two brakes, being mounted to be mobile between an inactive position and an active braking position for the brakes to pass from an inactive state to an active state, at least one of the stops forming an end-of-travel stop limiting the movement of the brakes in the active braking position of the control member, each brake being a cone brake comprising two parts with substantially coaxial conical surfaces surrounding the shaft equipped with the braking device,
wherein the shaft equipped with the braking device is formed of at least two coaxial shaft sections mounted to rotate freely relative to one another and each provided with one of the brakes of the braking device, in that one of the two parts with conical surfaces of each brake, termed the male cone, is mounted on and constrained to rotate with one of the shaft sections of said shaft equipped with the braking device, in that the other of the two parts with conical surfaces of each brake, termed the female cone, is mounted on and fixed against rotation relative to said shaft, and in that said stops form an assembly mounted so as to be movable axially along the shaft equipped with the braking device, this assembly being not constrained to rotate with said shaft or at least one of the sections of said shaft.