PURPOSE: To prevent the occurrence of a step on an assembly frame by folding side faces on both ends of at least one frame body to be fixed to adjacent frame bodies in assembling four frame bodies with a nearly U-shaped cross section.
CONSTITUTION: Frame bodies 13, 14, 15, 16 with a nearly U-shaped cross section are fixed to each other to form an assembly frame, which is arranged below a pan 11 and fits the pan 11 and an operation section 12 to a main body 20. The frame bodies are formed with a thin plate, the assembly frame requires the flatness on its contact face to mount the pan 11 or the like. Side faces 17 and 18 on both ends of one of the frame bodies, e.g., a frame body 13, are folded inward respectively, the frame body 13 is fixed to adjacent frame bodies 14 and 16 respectively at these portions to form the assembly frame. The displacement of the frame bodies and the occurrence of a step can be prevented by this frame assembling method.
ARAI AKIHIKO
SHIODA EIJI
OKADA KAZUICHI
