| 摘要 |
To provide a compact support device, the operation of which is smooth and easy, the fixation of which can be positively conducted, for supporting an electronic device tiltably and pivotally, there is provided a support device comprising: an upper member; a base member; a convex engagement surface provided on one of the upper member and the base member; a concave engagement surface provided on the other of the upper member and the base member, the profile of the concave engagement surface agreeing with the convex engagement surface; a drive mechanism for transferring a state of engagement of the convex engagement surface with the concave engagement surface from a frictional engagement state to a disengagement state; a perpendicular shaft penetrating both engagement surfaces; and a horizontal shaft arranged in an upper portion of the perpendicular shaft, wherein the upper member and the base member can be relatively rotated round an axis of the perpendicular shaft, the upper member and the perpendicular shaft can be relatively rotated round an axis of the horizontal shaft, the drive mechanism can move the perpendicular shaft in the upward direction for transferring the state, and the drive mechanism includes either a plate cam, a translation cam or a lever.
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