Convertible device to be used as sports equipment for children or as a pram

Convertible device to be used as sports equipment for children or as a pram, comprising a carrier body (10), at least two main wheels (13, 14) connected to the carrier body (10) via axles (11, 12), and a support member (15) that can be disposed on the carrier body (10), wherein the rotation shaft (11) of one of the main wheels (13) is connected to a steerer column (16) rotatably connected to the carrier body (10), with the axle (12) of the other main wheel (14) being connected to the carrier body (10), characterised in that the device comprises at least two adjustable-distance side wheels (21, 31) that are spaced apart by a variable spacing (T) at both sides of the longitudinal principal plane (17) of the carrier body (10), each side wheel (21, 31) being rotatably connected to a respective wheel holder member (20, 30) via a respective side axle (22, 32), and with the wheel holder members (20, 30) being movably connected to the carrier body (10), at least one respectively slider body (40, 50) comprising a respective curved guide track (41, 51) is disposed on the carrier body (10), mirror-symmetrically to the longitudinal principal plane (17) of the carrier body (10), at each side of said longitudinal principal plane (17), the one slider body (40) adapted to carry the one wheel holder member (20) comprising the one side wheel (21), the other slider body (50) adapted to partially receive the other wheel holder member (30) comprising the other side wheel (31), the slider body (40, 50) comprises a sliding member (2, 3) that is configured to correspond in size and shape to the curved guide track (41, 51) of the slider body (40, 50), and can be displaced along the curved guide track (41, 51) of the slider body (40, 50), the carrier plane (43) containing the centreline (42) of the curved guide track (41) of one of the slider bodies (40) and the carrier plane (53) containing the centreline (52) of the curved guide track (51) of the other slider body (50) are disposed mirror symmetrically with respect to the longitudinal principal plane (17) of the carrier body (10), with the curved movement paths (2a, 3a) of the sliding members (2, 3) and the centrelines (42, 52) of the guide tracks (41, 51) of the slider body (40, 50) constituting mutually corresponding circular arcs.