To provide a structure which does not move without sufficient reason when an earthquake, various impacts or the like occur by advancing such a constitution that a conventional stopping mechanism of a turn table at an emergency time, has a constitution wherein a rotating plate fixed on an outputting shaft of a motor provided on a casing, and a placing stand are provided through a bearing on the rotating plate, the rotation of the rotating plate is transmitted to the placing stand through the bearing, and rotational transmission can be intercepted by utilizing a space caused by vertical difference of the inner and outer races of the bearing.

In the turn table wherein the rotating plate is fixed on the outputting shaft of the motor of the casing, and the placing stand is provided on the rotating plate through the bearing, and the rotation of the rotating plate is transmitted to the placing stand through the bearing, and the rotational transmission can be intercepted by utilizing the space caused by the vertical difference of the inner and outer races of the bearing, avoidance of friction between an empty body part of a rotational piece and the casing, or acceleration of dissipation of heat thereof is attempted.