# US 2020/0399818 A1 · Door assembly of laundry treatment device and laundry treatment device

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- Number: US 2020/0399818 A1
- Document ID: US20200399818A1
- Status: Published application
- Kind: A1
- Application number: 16/962,039
- Filed: 2018-12-20
- Published: 2020-12-24
- Earliest claimed: 2018-01-15
- Assignees: Qingdao Haier Drum Washing Machine Co., Ltd.; Haier Smart Home Co., Ltd.
- Applicants: Qingdao Haier Drum Washing Machine Co., Ltd.; Haier Smart Home Co., Ltd.
- Inventors: Zongyuan WENG; Kai LIU; Xuekai GUO
- Web page: https://patentgrep.com/patent/US20200399818A1

## CPC

- D06F 39/14: Doors or covers; Securing means therefor
- D06F 21/04: within an enclosing receptacle
- D06F: LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES

## Abstract

A door assembly of a laundry treatment device and a laundry treatment device. The door assembly includes an outer frame, an inner frame and an observation window provided between the outer frame and the inner frame, a mounting assembly being provided between the outer frame and the inner frame, the observation window being rotatably sandwiched between the outer frame and the inner frame by means of the mounting assembly. With this arrangement, the observation window can be rotated relative to the inner frame and the outer frame without deviating from the space between the inner frame and the outer frame, such that in the process of rotating the entire door assembly 180° to switch the door opening direction, the mounting requirement of the observation window can be satisfied only by separately rotating the observation window 180°, rotating same and then mounting same back to the door assembly.

## Claims

### Claim at position 1

1-10. (canceled)

### Claim 11

A door assembly of a laundry treatment device, comprising: an outer frame, an inner frame, and an observation window disposed between the outer frame and the inner frame,
and further comprising an installation assembly disposed between the outer frame and the inner frame, and the installation assembly is configured to enable the observation window to be rotatably sandwiched between the outer frame and the inner frame.

### Claim 12 (depends on 11)

The door assembly of the laundry treatment device according to claim 11, wherein the installation assembly comprises at least one fixing member disposed on an inner edge of the outer frame or an inner edge of the inner frame, the fixing member is formed with an installation groove, and an edge of the observation window is rotatably accommodated in the installation groove.

### Claim 13 (depends on 12)

The door assembly of the laundry treatment device according to claim 12, wherein the installation assembly further comprises a guide assembly disposed in the installation groove, and the observation window is rotated in the installation groove by the guide assembly.

### Claim 14 (depends on 13)

The door assembly of the laundry treatment device according to claim 13, wherein the guide assembly comprises:
rolling members;
limiting grooves disposed on an inner side of a groove wall of the installation groove, the rolling members being rotatably accommodated in the limiting grooves; and
annular guide grooves disposed on the edge of the observation window, the rolling members also being capable of rolling in the annular guide grooves.

### Claim 15 (depends on 14)

The door assembly of the laundry treatment device according to claim 14, wherein the rolling members are balls, and the limiting grooves are arc-shaped concave grooves disposed on the inner side of the groove wall.

### Claim 16 (depends on 15)

The door assembly of the laundry treatment device according to claim 15, wherein an inner side and an outer side of the edge of the observation window are respectively provided with the annular guide groove, the groove walls on both sides of the installation groove are respectively provided with the arc-shaped concave groove, and the ball is embedded between the inner side of the observation window and the groove wall on the corresponding side as well as between the outer side of the observation window and the groove wall on the corresponding side.

### Claim 17 (depends on 12)

The door assembly of the laundry treatment device according to claim 12, wherein a ring-shaped reinforcement structure is fixed to the inner frame, and the fixing member is disposed on the reinforcement structure.

### Claim 18 (depends on 17)

The door assembly of the laundry treatment device according to claim 17, wherein a locking assembly is further disposed between the outer frame and the inner frame, and the locking assembly comprises:
a limiting post disposed in a radial direction of the observation window;
a guide groove disposed in the reinforcement member; and
a capture hole disposed in the observation window,
wherein one end of the limiting post is fixed into the guide groove in an elastic connection manner, and the other end of the limiting post is inserted into or retracted from the capture hole in a retractable manner.

### Claim 19 (depends on 18)

The door assembly of the laundry treatment device according to claim 18, wherein the limiting post is further provided with a protruding end, the reinforcement structure is provided with a slide groove, and the protruding end is capable of protruding into the slide groove and sliding along the slide groove.

### Claim 20 (depends on 11)

A laundry treatment device, comprising the door assembly according to claim 11.