REAR CARRIER SYSTEM FOR A MOTOR VEHICLE

A rear carrier system for a motor vehicle with a carrier frame (4) and with a ball head holder (5), which comprises at least two clamping jaws (6) as well as a manually operable clamping device (3), of which at least one clamping jaw (6) is pivotally mounted between an open position releasing the ball head (2) and a closed position contacting the ball head (2). According to the invention, the at least two clamping jaws (6) are arranged so as to be displaceable in the vertical direction in a guide structure fixed to the carrier frame (4), and the guide structure is assigned a mechanical constraint guide which is operatively connected to the at least one pivotally movable clamping jaw (6).