Safety seat device for a rider, e.g. on a merry-go-round, has a part for a rider to lean back on and a stay with a section moving between open and closed positions

摘要

A part (2) for leaning on has a surface for supporting a rider's back and a stay (12) with an open end section (12a) to move between an opening position away from the part for leaning on and a closed position between the opening position and the part for leaning on.