Dual-drum washing machine

Patent metadata

Field	Value
Publication number	US-11236452-B2
Application number	US-201816620610-A
Country	US
Kind code	B2
Filing date	Jun 14, 2018
Priority date	Jun 15, 2017
Publication date	Feb 1, 2022
Grant date	Feb 1, 2022

Abstract

A double-drum washing machine comprises a first outer drum and a second outer drum which are respectively provided with a drum inside, wherein the second outer drum is provided with a connecting part which protrudes out of a surface of the second outer drum and which is molded integrally, the connecting part extends towards the first outer drum along a radial direction from the surface of the second outer drum, and an end part of the connecting part is in detachable connection with the first outer drum. Double drums of the double-drum washing machine are connected to be almost integrated, therefore, auxiliary fixed parts are reduced, and the connection between double drums is more stable, reliable and more compact, the vibration of the double-drum washing machine is effectively reduced during operation, the noise pollution of the double-drum washing machine is reduced, and additional counterweight is not required.

First claim

The invention claimed is:

1. A double-drum washing machine, comprising:
a first outer drum and a second outer drum which are respectively provided with a drum inside, wherein,
the second outer drum is integrally molded with a connecting part protruding from a surface of the second outer drum, the connecting part extends towards the first outer drum along a radial direction from the surface of the second outer drum, and an end part of the connecting part is in detachable connection with the first outer drum;
the connecting part includes a boss, a bottom part of the boss extends along a circumferential direction of an outer wall of the second outer drum, an end part of the boss is in detachable connection with the first outer drum and an upper side of the end part is provided with a curved end face, and the curved end face cooperates with an outer wall of the first outer drum,
a side of the boss is provided with multiple reinforcing ribs extending along an axial direction of the second outer drum and along a direction vertical to the axial direction, and
the reinforcing ribs extending along the axial direction of the second outer drum have a step-shaped structure, and a height of the step-shaped structure close to the boss is larger than a height of the step-shaped structure far away from the boss.

2. The double-drum washing machine according to claim 1 , wherein two ends of the curved end face are not on the same height and are provided with a mounting through hole, the first outer drum is provided with a bolt column which is molded integrally corresponding to the mounting through hole, the bolt column is provided with a hollow structure and penetrates through the mounting through hole, and a screw is connected and fixed with the hollow structure.

3. The double-drum washing machine according to claim 2 , wherein the connecting part is arranged at an upper side of the second outer drum and close to a drum bottom of the second outer drum, and the bolt column is arranged at a lower side of the first outer drum and closed to a drum bottom of the first outer drum.

4. The double-drum washing machine according to claim 3 , wherein the curved end face is provided with an elastic buffer layer, and the elastic buffer layer is provided with a surface structure which is matched with an outer wall of the first outer drum.

5. The double-drum washing machine according to claim 2 , wherein the mounting through hole is a cylindrical hole.

6. The double-drum washing machine according to claim 5 , wherein the curved end face is provided with an elastic buffer layer, and the elastic buffer layer is provided with a surface structure which is matched with an outer wall of the first outer drum.

7. The double-drum washing machine according to claim 2 , wherein the curved end face is provided with an elastic buffer layer, and the elastic buffer layer is provided with a surface structure which is matched with an outer wall of the first outer drum.

8. The double-drum washing machine according to claim 1 , wherein a middle portion of the boss is provided with an opening structure suitable for a person to hold by hand.

9. The double-drum washing machine according to claim 1 , comprising a front connecting piece for connecting a front part of the first outer drum and a front part of the second outer drum, wherein
the front connecting piece comprises a U-shape structure on an upper part of the front connecting piece, a left branch end arranged at a lower part of the U-shape structure and a right branch end arranged at the lower part of the U-shape structure, the left branch end and the right branch ends are arranged at different heights, two end parts of the U-shape structure, the left branch end and the right branch end are provided with the mounting through hole, the front part of the first outer drum and the front part of the second outer drum are respectively provided with the bolt column which is integrally molded, the bolt column is provided with a hollow structure and penetrates through the mounting through hole, and the screw is connected and fixed with the hollow structure.

10. The double-drum washing machine according to claim 9 , wherein the curved end face is provided with an elastic buffer layer, and the elastic buffer layer is provided with a surface structure which is matched with an outer wall of the first outer drum.

Assignees

• Qingdao Haier Drum Washing Machine Co Ltd

Inventors

• Li Wenwei
• Wang Jinkai
• Ning Xiao
• Tian Xinguo
• Duan Chongchao

Classifications

• D06F31/00 Primary

  Washing installations comprising an assembly of several washing machines or washing units, e.g. continuous flow assemblies · CPC title

• D06F37/267

  Tubs specially adapted for mounting thereto components or devices not provided for in preceding subgroups (D06F37/206 takes precedence) · CPC title

• D06F29/00

  Combinations of a washing machine with other separate apparatus in a common frame or the like, e.g. with rinsing apparatus · CPC title

• D06F37/262

  made of plastic material, e.g. by injection moulding · CPC title

• D06F37/263

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