PURPOSE: To realize indoor use of various playing implements incapable of using in house heretofore by utilizing strength and a structure of a lintel, a doorsill, etc., and using a multipurpose frame which can easily be installed without damaging the inside of a room and scarcely necessitating an a acommodation space.

CONSTITUTION: A frame is constituted of two pieces of supports 1 and one piece of beam 2, and the upper end part, and the lower end part are attached to a groove of a lintel, and a groove of a doorsill, respectively by the knack of fitting in fixtures. They are fitted into the same groove as established fixtures 8, and a vertical load, a front/rear load, and a left/ right load are transmitted to the doorsill, the groove of the lintel, and a pillar and a fixtures side part respectively. The support and the beam expand and contract, and can correspond to dimensions between the lintel and the doorsill, etc., being different in each house, as well. The beam, and the support are provided with hanging fixtures, and many holes, respectively, and this implement becomes a swing, a cradle, a horizontal bar, and a baby/infant protective door, when a rope and a seat plate are attached to the hanging fixtures, when a string is attached to a basket and it is hung, when a metallic bar is extended between the supports, and when a low door is attached, respectively, and moreover, a sports implement, general household implement, a medical treatment implement, etc., can be constructed simply.