To provide large diversity in the constitution of a toy provided with a frame associated by stillness, movement or both by utilizing the solution of space setting at the time of a structure, arranging two means for uniting a male part connection component and a female part connection component and using them for the assembly of various flat injected objects.

The connection part of a connection device 1 is a circular or double circular component provided with a basically concentric fitting part and an insertion tool 11. The connection part 1 is provided with fitting means like parts 15 and 16 in the shape of a kite. Also, a thin and long rod is a female component on the structure, and in the case of the insertion of the pin 12 of the connection device 1 and the fitting stopper of the thin and long rod, the head part 100 of the pin 12 and the recess of the fitting part are adjusted at the time of being connected to both wings from a side face. Also, by the roll of a crest by a specially round tip 102, the insertion part is leaned against the wall of a division wall and an inclination angle is adjusted. Also, the division wall is space-divided in a fixed distance by the size of the thin and long rod and the thin and long rod is successively fitted.