Method of manufacturing a drum-type washing machine
AssigneeLG Electronics Inc.
InventorsSam Je Park, Kwang Soo Kim
Life of this patent
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Abstract
Disclosed is a drum-type washing machine having a tub provided therein for storing wash water with an improved structure, the tub including a center tub formed in a hollow cylindrical form for rotatably providing a drum therein; and a back tub including a base plate for covering a rear side of the center tub, a first bending part bent backward from an outline of the base plate, and overlapped on an inner surface of the center tub, and a second bending part bent frontward from the first bending part, and overlapped on an outer circumferential surface of the center tub.
Claims3
A manufacturing method of a drum-type washing machine, comprising the steps of:
- forming a center tub formed in a cylindrical form;
- forming beads, formed in a bend form, on an outer circumferential surface of the center tub by compressing with a roller in a state that a press is installed on an inside thereof;
- forming a back tub including a first bending part formed by a curl manufacturing on an outline of a base plate formed in a circular form;
- inserting the back tub to overlap a rear inner circumferential surface of the center tub with the first bending part;
- seam welding the center tub with a side of the first bending part;
- and
- forming a second bending part for covering an end of the center tub by curling the first bending part.
Dependencies are inferred from the claim text.