A parking device for a cycle comprising: - a frame, - a carriage mounted such as to slide relative to the frame between a low position and a high return position, said carriage being designed to removably embed a wheel of a cycle to be parked so that said wheel moves with the carriage, which makes it possible to bring said cycle into a raised parking position, corresponding to the high position of the carriage, - a lock carried by the carriage and mounted movably relative to the latter between a locking position, in which said lock engages a stop conformation secured to the frame to prevent said carriage from reaching the high position from the low position, and an unlocking position, in which said lock is disengaged from said stop conformation to allow said carriage to reach the high position from said low position, - a bearing conformation designed to drive the lock from its locking position to its unlocking position in response to the exertion, on said bearing conformation, of a thrust applied through said wheel in a first thrust direction secant to the vertical direction (X-X'), said parking device comprising a support carried by the carriage and on which said wheel embedded by the carriage is intended to rest, said support being mounted movably relative to the carriage between a deactivated position causing the blocking of the lock to prevent it from reaching its unlocking position from its locking position, and an activated position causing the release of the lock to allow it to reach its unlocking position, said support being designed to reach its activated position from its deactivated position under the effect of a weight force exerted vertically by said wheel on said support when said wheel rests on the latter, said parking device being characterized in that said bearing conformation is mounted movably between at least one retracted position, in which it pushes back the lock into the unlocked position and a deployed position, in which it is elastically returned to push on the wheel in a second thrust direction opposite to said first thrust direction, said bearing conformation being mounted such as to pivot about a third pivot axis (Z-Z'). - a frame, - a carriage mounted such as to slide relative to the frame between a low position and a high return position, said carriage being designed to removably embed a wheel of a cycle to be parked so that said wheel moves with the carriage, which makes it possible to bring said cycle into a raised parking position, corresponding to the high position of the carriage, - a lock carried by the carriage and mounted movably relative to the latter between a locking position, in which said lock engages a stop conformation secured to the frame to prevent said carriage from reaching the high position from the low position, and an unlocking position, in which said lock is disengaged from said stop conformation to allow said carriage to reach the high position from said low position, - a bearing conformation designed to drive the lock from its locking position to its unlocking position in response to the exertion, on said bearing conformation, of a thrust applied through said wheel in a first thrust direction secant to the vertical direction (X-X'), said parking device comprising a support carried by the carriage and on which said wheel embedded by the carriage is intended to rest, said support being mounted movably relative to the carriage between a deactivated position causing the blocking of the lock to prevent it from reaching its unlocking position from its locking position, and an activated position causing the release of the lock to allow it to reach its unlocking position, said support being designed to reach its activated position from its deactivated position under the effect of a weight force exerted vertically by said wheel on said support when said wheel rests on the latter, said parking device being characterized in that said bearing conformation is mounted movably between at least one retracted position, in which it pushes back the lock into the unlocked position and a deployed position, in which it is elastically returned to push on the wheel in a second thrust direction opposite to said first thrust direction, said bearing conformation being mounted such as to pivot about a third pivot axis (Z-Z').