Washing machine

Patent metadata

Field	Value
Publication number	US-10745844-B2
Application number	US-201815875322-A
Country	US
Kind code	B2
Filing date	Jan 19, 2018
Priority date	Jul 20, 2015
Publication date	Aug 18, 2020
Grant date	Aug 18, 2020

Abstract

A washing machine includes a machine housing, a water accommodation tub disposed in the machine housing; a washing tub assembly disposed in the water accommodation tub and including a washing tub; and a balance ring mounted to an upper end of the washing tub and having a lower end fitted in the washing tub.

First claim

What is claimed is:

1. A washing machine, comprising:
a machine housing;
a water accommodation tub disposed in the machine housing; and
a washing tub assembly disposed in the water accommodation tub and comprising a cylindrical washing tub having a circumferential wall and a tub bottom;
wherein: an inner wall of the circumferential wall of the washing tub is provided with a pattern area having no holes, the pattern area defines a central region of the washing tub, the central region is formed between (i) a first plane perpendicularly intersecting an upper edge of the pattern area and (ii) a second plane perpendicularly intersecting a lower edge of the pattern area; the circumferential wall of the washing tub is provided with a water leakage hole communicating an interior of the washing tub and an exterior of the washing tub, the water leakage hole is located below the central region, the water leakage hole is covered by the tub bottom after the tub bottom is mounted to the washing tub; the washing tub is provided with a reinforcing rib that is an annular shape extending in a circumferential direction of the washing tub and located below the pattern area of the washing tub that has no holes, the reinforcing rib formed within a recessed portion of the circumferential wall of the washing tub; and the water leakage hole is disposed below the reinforcing rib.

2. The washing machine according to claim 1 , further comprising a balance ring mounted to an upper end of the washing tub and having a lower end fitted in the washing tub, the balance ring and the washing tub defining a water outlet passage there between, and the water outlet passage being configured to discharge water in the washing tub.

3. The washing machine according to claim 2 , wherein the washing tub assembly comprises at least one cover plate of a water-returning cover plate and a waterfall-spraying cover plate; the washing tub further comprises at least one cover plate mounting hole of a water-returning cover plate mounting hole and a waterfall-spraying cover plate mounting hole, the water-returning cover plate mounting hole is configured to mount to the water-returning cover plate, and the waterfall-spraying cover plate mounting hole is configured to mount to the waterfall-spraying cover plate.

4. The washing machine according to claim 2 , wherein the washing tub comprises a tub bottom mounting hole configured to mount to the tub bottom, and a balance ring mounting hole configured to mount to the balance ring.

5. The washing machine according to claim 2 , wherein an outer wall of the balance ring defines a recess recessed inwardly and extending in an axial direction of the balance ring, the recess extends upwardly from a lower end surface of the balance ring beyond an upper end surface of the washing tub, and the inner wall of the washing tub and the recess define the water outlet passage.

6. The washing machine according to claim 5 , wherein a bottom wall of the recess extends obliquely and outwardly in a direction from bottom to top.

7. The washing machine according to claim 5 , wherein a plurality of water outlet passages are provided and arranged in a circumferential direction of the washing tub.

8. The washing machine according to claim 1 , wherein an upper end of the tub bottom is fitted in a lower end of the washing tub, and the water leakage hole of the washing tub is covered by a part of the tub bottom fitted in the washing tub.

9. The washing machine according to claim 1 , wherein the total number of water leakage holes in the washing tub ranges from 24 to 40.

10. The washing machine according to claim 9 , wherein the total number of the water leakage holes in the washing tub is 28.

11. The washing machine according to claim 1 , wherein the circumferential wall of the washing tub is provided with a tub bottom positioning hole configured to position the tub bottom, and a tub bottom mounting hole configured to mount to the tub bottom, and the tub bottom mounting hole and the tub bottom positioning hole are located below the water leakage hole and covered by a part of the tub bottom fitted in the washing tub.

12. The washing machine according to claim 1 , wherein a wall of the washing tub defines an upper mold positioning hole and a lower mold positioning hole, the upper mold positioning hole is located above the central region of the washing tub, the lower mold positioning hole is located below the central region of the washing tub, the upper mold positioning hole is covered by a cover plate, and the lower mold positioning hole is covered by the tub bottom.

Assignees

• Wuxi Little Swan Electric Co Ltd
• Wuxi Little Swan Eletric Co Ltd

Inventors

• Zhu Biao
• Chen Youqun
• Xu Pengcheng

Classifications

• D06F37/245 Primary

  Damping vibrations by displacing, supplying or ejecting a material, e.g. liquid, into or from counterbalancing pockets · CPC title

• D06F37/145

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

• D06F37/265

  Counterweights mounted to the tub; Mountings therefor · CPC title

• D06F37/264

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

• D06F37/225 Primary

  Damping vibrations by displacing, supplying or ejecting a material, e.g. liquid, into or from counterbalancing pockets · CPC title