CLEANING ROBOT

• US 20180184864A1
• Filed: 12/29/2017
• Published: 07/05/2018
• Est. Priority Date: 12/30/2016
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Granted Patent: US 11,116,370 B2
• Time in Patent Office: Days
• CPC Class Codes: A47L 2201/04 Automatic control of the travelling movement; Automatic obstacle detection
• CPC Class Codes: A47L 9/009 Carrying-vehicles; Arrangements of trollies or wheels; Means for avoiding mechanical obstacles
• CPC Class Codes: A47L 9/02 Nozzles suction nozzles for fluid transport B65G51/00
• CPC Class Codes: B25J 11/0085 Cleaning
• CPC Class Codes: B25J 19/0062 Lubrication means
• CPC Class Codes: B25J 5/007 mounted on wheels

Abstract

A cleaning robot includes a cover, a fixed body provided in the cover, a traveling part connected to the fixed body, a movement frame fastened to the cover to move in correspondence with movement of the cover, an inner body configured to support the movement frame relative to the fixed body, and a rotator provided on a bottom of the inner body to rotate in correspondence with movement of the cover.

Claims

1. A cleaning robot comprising:

a fixed body;

a traveling part provided at a lower portion of the fixed body to enable the cleaning robot to move along a floor surface;

a suction part provided at the fixed body to suck foreign materials from the floor surface;

a cover surrounding the fixed body, the cover being configured to receive an external force;

a movement frame supporting the cover, the movement frame being movable together with the cover horizontally with respect to the fixed body;

an inner body supporting the movement frame relative to the fixed body; and

a rotator provided on a bottom side of the inner body, the rotator being configured to rotate upon movement of the cover to reduce friction between the inner body and the fixed body.

2. The cleaning robot according to claim 1, wherein the traveling part comprises a plurality of wheels.

3. The cleaning robot according to claim 1, further comprising a side brush protruding from a front lower end of the cover.

4. The cleaning robot according to claim 1, further comprising a rotator reception part provided on the bottom side of the inner body to receive the rotator.

5. The cleaning robot according to claim 4, wherein at least a portion of the rotator is exposed through a lower portion of the rotator reception part.

6. The cleaning robot according to claim 4, further comprising a lubricant applied between the rotator reception part and the rotator.

7. The cleaning robot according to claim 4, wherein the rotator reception part includes a plurality of rotator reception parts provided along an outer periphery of the bottom side of the inner body.

8. The cleaning robot according to claim 4, wherein the inner body is made of an aluminum material.

9. The cleaning robot according to claim 1, further comprising a flow layer provided between the inner body and the fixed body to reduce friction between the inner body and the fixed body.

10. The cleaning robot according to claim 9, wherein a material of the flow layer includes any one of polyoximethylene (POM) and acrylonitrile butadiene styrene (ABS).

11. The cleaning robot according to claim 1, further comprising:

a movement shaft connecting the movement frame to the inner body; and

a plate provided on the fixed body,

wherein the rotator contacts an upper surface of the plate.

12. The cleaning robot according to claim 1, further comprising:

a first elastic member connected between the movement frame and the fixed body for biasing the movement frame in a first direction; and

a second elastic member connected between the movement frame and the fixed body for biasing the movement frame in a second direction.

13. A cleaning robot comprising:

a fixed body;

a traveling part provided at a lower portion of the fixed body to enable the cleaning robot to move along a floor surface;

a suction part provided at the fixed body to suck foreign materials from the floor surface;

a cover surrounding the fixed body, the cover being configured to receive an external force;

a movement frame supporting the cover, the movement frame being movable together with the cover horizontally with respect to the fixed body;

an inner body supporting the movement frame relative to the fixed body; and

a flow layer provided between the inner body and the fixed body to reduce friction between the inner body and the fixed body upon movement of the cover.

14. The cleaning robot according to claim 13, wherein the traveling part comprises a plurality of wheels.

15. The cleaning robot according to claim 13, further comprising a side brush protruding from a front lower end of the cover.

16. The cleaning robot according to claim 13, further comprising a holder providing a reception space to receive the inner body therein,

wherein the flow layer is provided in the reception space.

17. The cleaning robot according to claim 13, wherein a material of the flow layer includes any one of polyoximethylene (POM) and acrylonitrile butadiene styrene (ABS).

18. The cleaning robot according to claim 13, further comprising:

a movement shaft connecting the movement frame to the inner body; and

a plate provided on the fixed body,

wherein the flow layer is provided on an upper surface of the plate.

19. The cleaning robot according to claim 13, further comprising:

a first elastic member connected between the movement frame and the fixed body for biasing the movement frame in a first direction; and

a second elastic member connected between the movement frame and the fixed body for biasing the movement frame in a second direction.

20. A cleaning robot comprising:

a fixed body;

a plurality of wheels provided at a lower portion of the fixed body to enable the cleaning robot to move along a floor surface;

a suction part provided at the fixed body to suck foreign materials from the floor surface;

a cover surrounding the fixed body, the cover being configured to receive an external force;

a movement frame supporting the cover, the movement frame being movable together with the cover horizontally with respect to the fixed body;

an inner body supporting the movement frame relative to the fixed body;

a movement shaft connecting the movement frame to the inner body;

a plurality of rotators provided on a bottom side of the inner body, the rotators being configured to rotate upon movement of the cover to reduce friction between the inner body and the fixed body;

a plate provided on the fixed body;

a flow layer provided on an upper surface of the plate to reduce friction between the rotators and the fixed body upon movement of the cover; and

at least one elastic member connected between the movement frame and the fixed body for biasing the movement frame in a first direction.