Compact three-wheel recreational vehicle seat overturning and sliding device

The utility model provides a compact three-wheel recreational vehicle seat overturning and sliding device which comprises a bottom frame assembly, a linear guide rail, a front seat assembly, a sliding block and a locking unit. The locking unit comprises a connecting plate, a positioning ring, a locking column, a limiting ring, a spring, a lantern ring, a supporting rod, a connecting lug plate, a shifting rod, a locking piece and two push rods. A first locking hole and a second locking hole are formed in the outer side surface of the linear guide rail; one end of the connecting plate is fixed to the outer side face of the sliding block. The lock column is movably arranged on the positioning ring; the limiting ring sleeves the lock column and is fixedly connected with the lock column; the sliding block is provided with a third locking hole allowing the lock column to pass through. The lantern ring is fixed on the sliding block; a first torsional spring is arranged in the lantern ring; a second torsional spring