Transmission for pedestrian-controlled wheeled vehicle and wheeled vehicle equipped with such a transmission

A transmission for a pedestrian-controlled wheeled vehicle, comprising:

• a driving member,
• a rotary driven member, such as a toothed wheel, permanently engaged with the driving member, driving means for driving the wheels of a same pair of wheels of the vehicle,
• said driving means comprising a wheel drive shaft produced in a single piece or at least two coaxial wheel drive shaft sections capable of each driving a wheel of a same pair of wheels of the vehicle, and disposed between the wheel drive shaft or each of the wheel drive shaft sections and the driven member,
• a clutch mechanism, the or each clutch mechanism comprising at least one part mounted so as to be axially mobile, on the wheel drive shaft or wheel drive shaft section with which said clutch mechanism cooperates, between a position away from the driven member and a position close to the driven member, the position away from the driven member corresponding to an activated state of the corresponding clutch mechanism,
• the position close to the driven member corresponding to a deactivated state of the corresponding clutch mechanism, the or each clutch mechanism being a so-called automatic clutch mechanism that can be activated by driving the driven member in rotation in a first, so-called forward, rotational driving direction, and that can be deactivated by driving the driven member in rotation in a second, so-called reverse, direction of rotation counter to said first direction of rotation, or by driving the wheel drive shaft or the wheel drive shaft section with which it cooperates in forward rotation, when the speed of rotation of the wheel drive Submitted at Filing shaft or the wheel drive shaft section is greater than the speed of rotation of the driven member, 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 one of its directions of rotation,
• wherein said at least one part of the or each clutch mechanism disposed, when the corresponding clutch mechanism is in the deactivated state, in a position close to the driven member, is, in said position, limited in axial displacement in the direction of a movement away from the driven member, when the driven member is in the forwardly driven state.