Universal wheel assembly and smart cleaning device having same

Patent metadata

Field	Value
Publication number	US-12090785-B2
Application number	US-202117324412-A
Country	US
Kind code	B2
Filing date	May 19, 2021
Priority date	Nov 19, 2018
Publication date	Sep 17, 2024
Grant date	Sep 17, 2024

Abstract

Embodiments of the present application disclose a universal wheel assembly and a smart cleaning device having the same. The universal wheel assembly includes a rotating shaft support and a universal wheel support. The rotating shaft support is configured to be fixed to a predetermined mounting position. The universal wheel support is connected to the rotating shaft support and is rotatable relative to the rotating shaft support. The universal wheel support is provided with a through hole, and the through hole is used for a mounting tool to pass through to fix the rotating shaft support to the predetermined mounting position.

First claim

What is claimed is:

1. A universal wheel assembly, comprising:
a rotating shaft support, wherein the rotating shaft support is configured to be fixed to a predetermined mounting position; and
a universal wheel support, wherein the universal wheel support is connected to the rotating shaft support and is rotatable relative to the rotating shaft support, wherein
the universal wheel support is provided with a through hole, and the through hole is used for a mounting tool to pass through to fix the rotating shaft support to the predetermined mounting position;
the universal wheel assembly is further provided with a rotating shaft for connecting the rotating shaft support and the universal wheel support;
the rotating shaft support is provided with a mounting hole, and a distance between a center line of the mounting hole and a rotation axis of the rotating shaft is equal to a distance between a center line of the through hole and the rotation axis of the rotating shaft, so as to more accurately fix the rotating shaft support to the predetermined mounting position;
stopper ribs are evenly arranged on the rotating shaft support around a center line of the rotating shaft support in a circumferential direction;
the rotating shaft support is provided with an elastic buckle, the elastic buckle is squeezed to a deformed position when the rotating shaft is inserted into the rotating shaft support, and the elastic buckle is reset to an initial position by means of elastic force when the rotating shaft is inserted in place, to restrict movement of the rotating shaft toward the universal wheel support; and
the rotating shaft support, the stopper ribs, and the elastic buckle are a monolithic one-piece construction.

2. The universal wheel assembly according to claim 1 , wherein the through hole is used for the mounting tool to pass through to operate a connecting part passing through the mounting hole, thereby fixing the rotating shaft support to the predetermined mounting position.

3. The universal wheel assembly according to claim 2 , wherein a diameter of the through hole is larger than a diameter of the mounting hole.

4. The universal wheel assembly according to claim 2 , wherein the rotating shaft support is provided with a mounting plate on a plane on which the universal wheel support rotates, and the mounting hole is arranged on the mounting plate.

5. The universal wheel assembly according to claim 4 , wherein there are at least two mounting holes.

6. The universal wheel assembly according to claim 1 , wherein the rotating shaft and a universal wheel are mounted on the universal wheel support, the universal wheel is detachably connected to the universal wheel support, and the rotating shaft is connected to the universal wheel support and the rotating shaft support, and is rotatable relative to the rotating shaft support.

7. The universal wheel assembly according to claim 6 , wherein the rotating shaft and the rotating shaft support are coaxially arranged.

8. The universal wheel assembly according to claim 6 , wherein the rotating shaft is made of metal material, and the rotating shaft and the universal wheel support are integrally injection molded.

9. The universal wheel assembly according to claim 6 , wherein the elastic buckle comprises a hook portion, the rotating shaft comprises a stopper recess, and the hook portion cooperates with the stopper recess to restrict movement of the rotating shaft toward the universal wheel support.

10. The universal wheel assembly according to claim 7 , wherein the elastic buckle comprises a hook portion, the rotating shaft comprises a stopper recess, and the hook portion cooperates with the stopper recess to restrict movement of the rotating shaft toward the universal wheel support.

11. The universal wheel assembly according to claim 8 , wherein the elastic buckle comprises a hook portion, the rotating shaft comprises a stopper recess, and the hook portion cooperates with the stopper recess to restrict movement of the rotating shaft toward the universal wheel support.

12. A smart cleaning device, comprising a universal wheel assembly, wherein the universal wheel assembly is arranged at a bottom of the smart cleaning device and comprises:
a rotating shaft support, wherein the rotating shaft support is configured to be fixed to a predetermined mounting position; and
a universal wheel support, wherein the universal wheel support is connected to the rotating shaft support and is rotatable relative to the rotating shaft support, wherein
the universal wheel support is provided with a through hole, and the through hole is used for a mounting tool to pass through to fix the rotating shaft support to the predetermined mounting position;
the universal wheel assembly is further provided with a rotating shaft for connecting the rotating shaft support and the universal wheel support;
the rotating shaft support is provided with a mounting hole, and a distance between a center line of the mounting hole and a rotation axis of the rotating shaft is equal to a distance between a center line of the through hole and the rotation axis of the rotating shaft, so as to more accurately fix the rotating shaft support to the predetermined mounting position;
stopper ribs are evenly arranged on the rotating shaft support around a center line of the rotating shaft support in a circumferential direction;
the rotating shaft support is provided with an elastic buckle, the elastic buckle is squeezed to a deformed position when the rotating shaft is inserted into the rotating shaft support, and the elastic buckle is reset to an initial position by means of elastic force when the rotating shaft is inserted in place, to restrict movement of the rotating shaft toward the universal wheel support; and
the rotating shaft support, the stopper ribs, and the elastic buckle are a monolithic one-piece construction.

13. The smart cleaning device according to claim 12 , wherein the stopper ribs match the bottom of the smart cleaning device.

Assignees

• Beijing Roborock Technology Co Ltd

Inventors

• Yu Guang
• Gong Dahong
• Mi Chang
• Cheng Pan

Classifications

• B60B2360/10

  Metallic materials · CPC title

• B60B2310/204

  by moulding, e.g. injection moulding, i.e. casting of plastics material · CPC title

• B60B2200/49

  Domestic appliances, e.g. vacuum cleaners · CPC title

• B60B33/0068

  the swivel axis being vertical · CPC title

• B60B33/0049

  the rolling axle being horizontal · CPC title