US 12,250,902 B2
Transmission for pedestrian-controlled wheeled vehicle and wheeled vehicle equipped with such a transmission
Pierre Bru, Sevremoine (FR); and Nicolas Didier, Mouchamps (FR)
Assigned to FRANCE REDUCTEURS, Les Herbiers (FR)
Appl. No. 17/765,578
Filed by FRANCE REDUCTEURS, Les Herbiers (FR)
PCT Filed Sep. 29, 2020, PCT No. PCT/FR2020/051706
§ 371(c)(1), (2) Date Mar. 31, 2022,
PCT Pub. No. WO2021/064322, PCT Pub. Date Apr. 8, 2021.
Claims priority of application No. 1910942 (FR), filed on Oct. 3, 2019.
Prior Publication US 2023/0023943 A1, Jan. 26, 2023
Int. Cl. A01D 34/69 (2006.01); A01D 34/68 (2006.01); F16D 41/22 (2006.01); F16H 48/14 (2006.01); F16H 48/16 (2006.01)
CPC A01D 34/69 (2013.01) [A01D 34/6812 (2013.01); F16D 41/22 (2013.01); A01D 2034/6837 (2013.01); F16H 48/142 (2013.01); F16H 48/16 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A transmission for a pedestrian-controlled wheeled vehicle, comprising:
a driving member;
a rotary driven member permanently engaged with the driving member;
a driving means for driving wheels of a pair of wheels of the vehicle,
said driving means comprising a wheel drive shaft produced either in a single piece driving said pair of wheels, or at least two coaxial wheel drive shaft sections each driving a wheel of the pair of wheels of the vehicle, and
at least one clutch mechanism disposed between the wheel drive shaft or each of the wheel drive shaft sections, and the rotary driven member;
wherein said at least one clutch mechanism comprising at least one part, mounted so as to be axially mobile on either the wheel drive shaft or the wheel drive shaft section with which said clutch mechanism cooperates, between a position away from the rotary driven member and a position close to the rotary driven member, the position away from the rotary driven member corresponding to an activated state of the clutch mechanism,
wherein the position close to the rotary driven member corresponding to a deactivated state of the clutch mechanism,
the at least one clutch mechanism can be activated by driving the rotary driven member in rotation in a first forward rotational driving direction,
and that can be deactivated by driving the rotary driven member in rotation in a second reverse direction of rotation, counter to said first forward rotational driving direction, or by driving either the wheel drive shaft or the wheel drive shaft section with which the clutch mechanism cooperates in the forward rotational driving direction, when a speed of rotation of either the wheel drive shaft or the wheel drive shaft section is greater than a speed of rotation of the rotary driven member, either the wheel drive shaft or each wheel drive shaft section being, when the corresponding clutch mechanism is in the deactivated state, free to turn in either direction of rotation,
wherein said at least one part of the at least one clutch mechanism which is disposed, when the clutch mechanism is in the deactivated state, in the position close to the rotary driven member, is, in said position, limited in axial displacement in a direction of a movement away from the rotary driven member, when the rotary driven member is in the reverse direction of rotation,
wherein said at least one part of the at least one clutch mechanism comprises, for limiting the axial displacement thereof in the direction of the movement away from the rotary driven member, retaining elements that engage with complementary retaining elements borne by the rotary driven member.