Gear shift device and associated mobility vehicle

A gearshift device for a mobility vehicle, comprising:

• a selection shaft in which there are housed a shuttle and a worm,
• at least two input pinions configured so as to turn freely around the selection shaft,
• at least two output pinions that rotate as one with a hollow shaft,
• a gearshift actuator arranged so as to displace the shuttle along the worm between at least two positions and to engage a selected gear,
• at least two pawls positioned at the selection shaft, each pawl being associated with a lifter device allowing the pawl to be lifted by the shuttle and engage the gear selected via the input and output pinions,
• wherein the gearshift device also comprises a radial blocking system, formed as a single piece, to hold all of the pawls in place on the selection shaft,
• wherein the blocking system is formed of a longitudinal flat part from which there extend at least two tabs, each of the at least two tabs being positioned above one of the pawls, and
• wherein the longitudinal flat part is inserted, via an edge opposite to an edge at which the tabs are situated, into a longitudinal slot formed in the selection shaft.