{TAIL ~ A braking structure} for a turning body includes {HEAD ~ an engagement device} rotatably engaging a movable side portion of a rotation damper with a base at a rotation center of the movable side portion; a first fixing device fixing the movable side portion relative to the turning body; and a second fixing device fixing a stationary side portion of the rotation damper relative to the base 
{ TAIL ~ A braking structure } for a turning body includes { HEAD ~ an engagement device } rotatably engaging a movable side portion of a rotation damper with a base at a rotation center of the movable side portion ; a first fixing device fixing the movable side portion relative to the turning body ; and a second fixing device fixing a stationary side portion of the rotation damper relative to the base
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