Patent ID: 8376300

Claim:
An apparatus comprising: a supporting body; a rotating body rotatably situated in the supporting body to rotate at least between a standard position and a deployed position through an intermediate position; a biasing device having one end attached to the rotating body and another end attached to the supporting body, for applying a biasing force to the rotating body in a direction of returning the rotating body to the standard position; and a speed switching device provided on the supporting body for changing a rotational speed of the rotating body from the deployed position to the intermediate position different from that from the intermediate position to the standard position in a return rotational movement of the rotating body, wherein the speed switching device comprises at least two damping devices; at least two first gears attached to the damping devices for applying damping forces of the damping devices to the rotating body; and at least two second gears formed integrally on the rotating body, one of the damping devices is partially engaged with one of the second gears to change a damping force applying to the rotating body before and after the return rotational movement of the rotating body reaches the intermediate position, and one of the second gears has teeth always engaging with one of the first gears, and another of the second gears has a toothless part that is disengaged from another of the first gears during a period from the standard position to the intermediate position and a toothed part engaging with another of the first gears during a period from the deployed position to the intermediate position.