Drum washing machine

Patent metadata

Field	Value
Publication number	US-2021332521-A1
Application number	US-201917274366-A
Country	US
Kind code	A1
Filing date	Sep 9, 2019
Priority date	Sep 11, 2018
Publication date	Oct 28, 2021
Grant date	—

Abstract

A front-loading washing machine includes a housing; a washing tub including one or more locking holes on a lateral side; and one or more lifters lifting up laundry based on spinning of the washing tub. The lifter includes a locking member passing through the locking hole, bent at an outside of the washing tub and extended in a spinning axis direction of the washing tub. The locking hole includes a first edge to which the locking member is locked to couple the lifter and the washing tub, and a second edge and a third edge adjacent to opposite ends of the first edge and surrounding the locking member to face with each other.

First claim

1 . A front-loading washing machine comprising:
a housing comprising a door to be opened and closed on a front; a washing tub provided to be spinnable inside the housing, shaped like a cylinder opened toward the front facing the door, and comprising one or more locking holes on a lateral side; and one or more lifters provided inside the washing tub, coupled to the washing tub through the locking holes, and lifting up laundry based on spinning of the washing tub, the lifter comprising a locking member passing through the locking hole, bent at an outside of the washing tub and extended in a spinning axis direction of the washing tub, and the locking hole comprising a first edge to which the locking member is locked to couple the lifter and the washing tub, and a second edge and a third edge adjacent to opposite ends of the first edge and surrounding the locking member to face with each other.

2 . The front-loading washing machine according to claim 1 , wherein the locking member is provided to be locked to a certain region of the washing tube forming the first edge.

3 . The front-loading washing machine according to claim 1 , wherein the locking member comprises:
an erect portion erectly extended from a bottom of the lifter and provided to be in contact with the first edge, an end portion bent from the erect portion in the spinning axis direction, and an inclined portion provided between the erect portion and the end portion, and inclined at a predetermined angle to an axis line of the spinning axis direction.

4 . The front-loading washing machine according to claim 1 , wherein the locking hole comprises a bilateral symmetry with respect to an axis line passing through a center of the locking hole in the spinning axis direction.

5 . The front-loading washing machine according to claim 4 , wherein the locking hole comprises a rectangular shape.

6 . The front-loading washing machine according to claim 4 , wherein the locking hole comprises corners rounded to have a predetermined diameter.

7 . The front-loading washing machine according to claim 1 , wherein
the lifter comprises a fastening boss protruding from a bottom of the lifter, and the washing tub comprises a fastening hole to be fastened with the fastening boss by a screw.

8 . The front-loading washing machine according to claim 7 , further comprising
a water tank comprising a water supplying hole to which a supplying pipe for supplying wash water is coupled, and accommodating the washing tub therein, wherein the fastening hole is positioned corresponding to a position of the water supplying hole.

9 . A front-loading washing machine comprising,
a housing comprising a door to be opened and closed on a front; a washing tub provided to be spinnable inside the housing, shaped like a cylinder opened toward the front facing the door, and comprising one or more locking holes on a lateral side; and one or more lifters provided inside the washing tub, coupled to the washing tub through the locking holes, and lifting up laundry based on spinning of the washing tub, the lifter comprising an erect portion extended toward the washing tub, and an end portion having a larger diameter than the erect portion, the locking hole comprising a groove cut in a radial direction of the locking hole from a partial edge of the locking hole.

Assignees

• Samsung Electronics Co Ltd

Inventors

• Kim Yongkwon
• Cho Youngjin
• Kweon Sangyoung
• Sung Jonghun
• Choi Jihoon

Classifications

• D06F37/263

  assembled from at least two elements connected to each other; Connecting or sealing means therefor · CPC title

• D06F37/065 Primary

  ribs or lifters having means for circulating the washing liquid · CPC title

• D06F37/264

  Tubs provided with reinforcing structures, e.g. ribs, inserts, braces · CPC title

• D06F39/12

  Casings; Tubs · CPC title

• Y02B40/00

  Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers · CPC title