Abstract: The present invention discloses a washing machine having high reliability. The washing machine includes a housing, a tub provided in the housing for holding washing water, a drum rotatably mounted in the tub for washing laundry, a door having an outer frame and an inner frame secured to an inside of the outer frame, for opening/closing an opening in the housing such that the housing is in communication with the drum, a hinge arm joining the housing and the door, and rotatably coupled to the housing and the door respectively, and a holder provided between the outer frame and the inner frame for holding a portion of the hinge arm arranged in the door.

Abstract: Disclosed is a washing machine. The washing machine comprises a tub; a drain hose discharging washing water stored in the tub to outside, in which a siphon brake hole is formed at one side of the drain hose; a backflow hose guiding the washing water drained through the siphon brake hole during the draining process, as one end of the backflow hose is connected to the siphon brake hole and the other end is directly/indirectly connected to the tub; and a switching element preventing the washing water back-flowed into the backflow hose from being flowed into the tub.