Rotating tub body and drum-type washing machine having the same

摘要

A cylindrical rotating tub body (30) and a drum-type washing machine having the same, in which the rotating tub body (30) is formed by rolling a plate (P) such that both ends of the plate (P) are connected to each other. The washing machine includes a cylindrical rotating tub body (30) and a plurality of lifters (33), which are spaced apart from each other on an inner peripheral surface of the rotating tub body (30). The rotating tub body (30) includes lifter installation sections (30b) on which a plurality of lifters (33) are installed, concave-convex sections (30a) having a plurality of concave-convex parts (30d) and being installed between the lifter installation sections (30b), and reinforcement sections (30f) to reinforce the strength of the lifter installation sections (30b). The lifter installation sections (30b) having a strength lower than that of the concave-convex sections (30a) are reinforced due to the reinforcement sections (30f), so that the lifter installation sections (30b) are prevented from being extremely deformed during the rolling process.