Patent ID: 7753444

Claim:
A child seat attached to a vehicle seat, comprising: a child seat body which comprises a bottom face and a guided member which is fixed on the bottom face; and a base platform that rests on a seating surface of the vehicle seat, the base platform including a bottom surface that faces the seating surface of the vehicle seat, a top surface that is opposite the bottom surface and faces the bottom face of the child seat body, said top surface having a guide groove formed therein for sliding engagement with the guide member of the child seat body, a rear surface that faces a seatback of the vehicle seat, a front surface that is opposite the rear surface, and first and second side surfaces that extend between the front surface and the rear surface, wherein the guide groove comprises a straight groove portion, a first curved groove portion, and a second curved groove portion, the straight groove portion linearly extending from a starting end toward the front surface to stop at a terminating end, the first curved groove portion curvilinearly extending from the terminating end toward the first surface and the second curved groove portion curvilinearly extending from the terminating end toward the second surface, the first and second curved groove portions each including a lock member that in a locked state prevents the guided member from sliding past the respective lock member toward the straight groove portion, wherein the child seat body can turn to a substantially lateral direction relative to a longitudinal direction of a vehicle by the guided member being guided along the first or second curved groove portion.