A tub of a washing machine includes: a first case and a second case welded to each other; a first coupling surface formed along a circumference of the first case facing the second case; a second coupling surface formed along a circumference of the second case facing the first case and bonded to the first coupling surface; and a coupling protrusion that protrudes along the first coupling surface and includes a protruding end portion welded to the second coupling surface. The coupling protrusion includes: a main coupling protrusion protruding along the first coupling surface; and an auxiliary coupling protrusion protruding along the first coupling surface and outwardly spaced apart from the main coupling protrusion. Further, an opening for communicating a space between the auxiliary coupling protrusion and the main coupling protrusion to an outside of the tub is defined in a bottom of the tub.

A washing machine includes a tub and a drum. The tub includes a first case and a second case welded to each other; a first coupling surface extending along a circumference of the first case and facing the second case; a second coupling surface extending along a circumference of the second case and coupled to the first coupling surface; and a coupling protrusion that protrudes from the first coupling surface toward the second coupling surface and that includes a protruding end portion welded to the second coupling surface. The coupling protrusion includes: a main coupling protrusion that extends along the first coupling surface; and an auxiliary coupling protrusion that is disposed radially outward of the main coupling protrusion and spaced apart from the main coupling protrusion and that defines a discharge opening configured to discharge washing water entered between the main coupling protrusion and the auxiliary coupling protrusion.

A laundry machine includes first and second washing units including first and second tubs, respectively. First and second drums are mounted inside the first and second tubs, and first and second drive units drive rotations of the first and second drums around first and second rotational shafts, respectively. The second washing unit is arranged above the first washing unit and has a smaller laundry treating capacity than the first washing unit. The first rotational shaft is not parallel to the second rotational shaft. A first recess projects downward from a rear lower surface of the second tub and is configured to heat wash water in the second tub. A metal plate member is provided on an outside lower surface of the second tub, and partially extends to the rear of the second tub to expose a bottom surface of the first recess.

A wash tub apparatus and method of manufacturing the wash tub for a laundry washing machine. The wash tub may include a bearing housing shell and a bearing housing insert. The bearing housing insert may include at least one bearing. The bearing housing shell may be overmolded with a plastic portion of the cylindrical tub.

A laundry appliance includes a rotating drum that receives laundry to be treated. A motor rotates a drive shaft about a vertical axis and engages the rotating drum at a base. A coupler is disposed within an upper portion of the base and that rests upon the drive shaft to transfer rotational forces from the drive shaft to the drum. A lower portion of the base engages an outer surface of the shaft to resist moment forces that are exerted against the drive shaft in an off-axis direction relative to the vertical axis.

A laundry appliance includes a rotating drum that receives laundry to be treated. A motor rotates a drive shaft about a vertical axis and engages the rotating drum at a base. A coupler is disposed within an upper portion of the base and that rests upon the drive shaft to transfer rotational forces from the drive shaft to the drum. A lower portion of the base engages an outer surface of the shaft to resist moment forces that are exerted against the drive shaft in an off-axis direction relative to the vertical axis.

A washing machine includes a washing-basket assembly including a rotatable shaft configured to be rotatably supported. A gear assembly is configured to engage with the rotatable shaft. A foot-peddle assembly is coupled to the gear assembly. This is done in such a way that the foot-peddle assembly, in use, urges a rotatable reciprocating movement of the gear assembly, the rotatable shaft and the washing-basket assembly.

A double-drum washing machine comprises a first outer drum and a second outer drum which are respectively provided with a drum inside, wherein the second outer drum is provided with a connecting part which protrudes out of a surface of the second outer drum and which is molded integrally, the connecting part extends towards the first outer drum along a radial direction from the surface of the second outer drum, and an end part of the connecting part is in detachable connection with the first outer drum. Double drums of the double-drum washing machine are connected to be almost integrated, therefore, auxiliary fixed parts are reduced, and the connection between double drums is more stable, reliable and more compact, the vibration of the double-drum washing machine is effectively reduced during operation, the noise pollution of the double-drum washing machine is reduced, and additional counterweight is not required.

A washing machine including a first tub accommodated in a housing and formed by assembling a first member disposed in the front portion with a second member disposed in the rear portion; a second tub disposed above the first tub, a drum rotatably disposed in the inside of the second tub; and a driving shaft connected to the drum, configured to transfer a driving force to the drum and located further behind than an engaged portion of the first member and the second member of the first tub.

A laundry treating apparatus is disclosed. The laundry treating apparatus includes a housing, a tub provided inside the housing, for storing washing water therein, a drum rotatably provided inside the tub, for storing laundry therein, and a top cover provided above the housing to cover upper portions of the tub and the drum. The housing includes front and rear and left and right sidewalls to define a space therein, and an extending portion formed to have a front and rear spacing and an up and down spacing from the top cover above the front sidewall so that an entrance space is formed from the front upper portion of the front sidewall to the inside of the housing.