PURPOSE: To attach removably a pachinko machine stand on an island body with a simple operation.

CONSTITUTION: An upper lock pin 30 provided on an upper base member 12 and adapted to project by an urging force is inserted into an upper locating hole 24 in an upper frame member 22 of a pachinko machine stand 20, while a lower lock pin 40 provided on a lower base member 13 and adapted to project by an urging force is inserted into a lower locating hole 25 in a lower frame member 23 of the pachinko machine stand 20 so that a pinball machine stand 20 is fixededly located on an island body 10. The upper lock pin 30 can be put in against the urging force to be disengaged from the upper locating hole 24 and similarly the lower lock pin 40 can be put in against the urging force to be disengaged from the lower locating hole 25.