# US 10,119,218 B2 · Washing machine > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,119,218 B2 - Document ID: US10119218B2 - Status: Granted - Kind: B2 - Application number: 14/874,882 - Filed: 2015-10-05 - Published: 2016-08-11 - Granted: 2018-11-06 - Earliest claimed: 2015-02-06 - Assignees: Samsung Electronics Co., Ltd. - Applicants: Samsung Electronics Co., Ltd. - Inventors: Won Jae Han; Do Haeng Kim; Young-Hyun Kim; Ji Yoon Kim; Min Hwan Oh; Hong Seok Ko; Jae Hee Jo; Je Wan Hong - Web page: https://patentgrep.com/patent/US10119218B2 ## CPC - D06F 31/00: Washing installations comprising an assembly of several washing machines or washing units, e.g. continuous flow assemblies - D06F 29/00: Combinations of a washing machine with other separate apparatus in a common frame or the like, e.g. with rinsing apparatus - D06F 37/42: Safety arrangements, e.g. for stopping rotation of the receptacle upon opening of the casing door - D06F 39/14: Doors or covers; Securing means therefor - D06F 1/04: the tub walls or bottom having corrugations - D06F 23/04: and rotating or oscillating about a vertical axis - D06F: LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES ## Abstract A washing machine includes a door and an auxiliary washing unit that may be readily fastened to each other by a locking unit for fastening the door and the auxiliary washing unit. The washing machine includes a main body in which an opening is formed, a door that opens and closes the opening, an auxiliary washing unit that is provided on an inner side of the door to form an auxiliary washing space, and a locking unit that locks the door and the auxiliary washing unit. Here, the locking unit may perform linear motion in one direction to lock or unlock the door and the auxiliary washing unit. ## Claims ### Claim 1 A washing machine, comprising: a main body having an opening disposed at an upper portion of the main body; a door rotatably disposed on the main body and configured to open and close the opening; and an auxiliary washing unit disposed between the opening and the door when the opening is closed by the door, wherein the door comprises: a hinge unit disposed at a rear side of the door, a locking unit disposed at a front side of the door, the locking unit being configured to lock the door to the auxiliary washing unit and release the door from the auxiliary washing unit, and including a rotation protrusion protruding from a body of the locking unit, and an accommodating portion configured to support the rotation protrusion to perform linear and rotational motion inside the accommodating portion so that the locking unit is moveable in forward and rearward directions and rotatable during locking and unlocking of the locking unit. ### Claim 2 (depends on 1) The washing machine according to claim 1, wherein the accommodating portion is a space in which a diameter in one direction is greater than a diameter in the other direction. ### Claim 3 (depends on 2) The washing machine according to claim 2, wherein the accommodating portion is formed to have a substantially elliptical shape and is elongated in forward and rearward directions. ### Claim 4 (depends on 1) The washing machine according to claim 1, wherein the rotation protrusion performs linear and rotational motion inside the accommodating portion. ### Claim 5 (depends on 1) The washing machine according to claim 1, wherein, when an external force is applied to the locking unit, the locking unit is moved forward toward a front side of the washing machine. ### Claim 6 (depends on 5) The washing machine according to claim 5, wherein the locking unit includes an elastic member that provides an elastic force to the locking unit, and when the external force applied to the locking unit is removed, the locking unit is moved rearward by the elastic member toward a rear side of the washing machine and returned to a position before the external force was applied. ### Claim 7 (depends on 1) The washing machine according to claim 1, wherein a rotation axis of the door is in parallel with a rotation axis of the locking unit. ### Claim 8 (depends on 7) The washing machine according to claim 7, wherein, the auxiliary washing unit comprises an interference portion that protrudes forward toward a front side of the washing machine and is configured to be selectively interfered with by the locking unit. ### Claim 9 (depends on 1) The washing machine according to claim 1, wherein, when the locking unit locks the door to the auxiliary washing unit, the door and the auxiliary washing unit are rotatable together. ### Claim 10 (depends on 1) The washing machine according to claim 1, wherein the door and the auxiliary washing unit are rotatable about a same rotational axis.