Dust collection box and robot vacuum cleaner

1. A dust collection box, comprising:

a box body comprising a dust extraction port at a bottom of the box body, wherein a top of the box body defines an opening in communication with the dust extraction port;

a lower lid comprising a first lateral portion and a second lateral portion opposite to each other, the first lateral portion being rotatably connected with the box body to enable the lower lid to open or close the dust extraction port, the second lateral portion being snap-fitted with the box body through a first snap structure;

an upper lid detachably arranged to the top of the box body and covering the opening; and

a button arranged on a side surface of the dust collection box, wherein the button is configured be depressible such that when the button is pushed, the lower lid rotates downward along the first lateral portion to expose the dust extraction port; and, wherein

when the lower lid closes, the dust extraction port is enclosed by the lower lid.

2. The dust collection box according to claim 1 , wherein the lower lid comprises a bottom wall and a lateral wall extending from an edge of the bottom wall, and the bottom wall and the lateral wall enclose a groove; and, wherein

when the lower lid close, the bottom of the box body stretches into the groove, and the lateral wall surrounds the bottom of the box body.

3. The dust collection box according to claim 2 , wherein

the box body comprises a dust collecting chamber in communication with the dust extraction port;

the lower lid comprises a bump fixed on the bottom wall and received in the groove; and, wherein

when the lower lid closes, the bump extends into the dust collecting chamber and fills a bottom of the dust collecting chamber.

4. The dust collection box according to claim 2 , wherein the box body comprises an outer peripheral surface and a bottom surface connected with the outer peripheral surface, and a receiving groove is defined at a joint of the outer peripheral surface and the bottom surface; and, wherein when the lower lid closes, the lateral wall is received in the receiving groove, and the outer peripheral surface is smoothly transitioned to an outer side of the lateral wall.

5. The dust collection box according to claim 1 , wherein the button comprises a rotating shaft, and the button is rotatably arranged to the box body through the rotating shaft; and wherein

the first snap structure comprises a hook formed at an end of the button and a snapping part formed at the second lateral portion.

6. The dust collection box according to claim 5 , wherein the button is configured to swing, with respect to the box body, between a first position, where the hook is snap-fitted with the snapping part to make the lower lid enclose the dust extraction port, and a second position.

7. The dust collection box according to claim 5 , wherein the hook comprises a snapping surface facing upwards, the snapping part comprises a snapping bar, and in the first position, the snapping bar abuts against the snapping surface.

8. The dust collection box according to claim 5 , wherein the button comprises a press board, and the rotating shaft is fixed in a middle position of the press board.

9. The dust collection box according to claim 8 , wherein the press board comprises a first swing end and a second swing end located at two opposite sides of the rotating shaft respectively; and, wherein

the hook forms the first swing end, the first swing end swings towards a direction away from the box body, and the second swing end swings towards a direction approaching the box body; and

the box body defines a void space available for the second swing end to swing.

10. The dust collection box according to claim 1 , wherein the upper lid is connected with the box body through a second snap structure.

11. A robot vacuum cleaner, comprising:

a casing; and

a dust collection box comprising:

a box body comprising a dust extraction port at a bottom of the box body, wherein a top of the box body defines an opening in communication with the dust extraction port;

a lower lid comprising a first lateral portion and a second lateral portion opposite to each other, the first lateral portion being rotatably connected with the box body to enable the lower lid to open or close the dust extraction port, the second lateral portion being snap-fitted with the box body through a first snap structure;

an upper lid detachably arranged to the top of the box body and covering the opening; and

a button arranged on a side surface of the dust collection box, wherein the button is configured be depressible such that when the button is pushed, the lower lid rotates downward along the first lateral portion to expose the dust extraction port; and, wherein

when the lower lid closes, the dust extraction port is enclosed by the lower lid.

12. The robot vacuum cleaner according to claim 11 , wherein the lower lid comprises a bottom wall and a lateral wall extending from an edge of the bottom wall, and the bottom wall and the lateral wall enclose a groove; and, wherein

when the lower lid close, the bottom of the box body stretches into the groove, and the lateral wall surrounds the bottom of the box body.

13. The robot vacuum cleaner according to claim 12 , wherein

the box body comprises a dust collecting chamber in communication with the dust extraction port;

the lower lid comprises a bump fixed on the bottom wall and received in the groove; and, wherein

when the lower lid closes, the bump extends into the dust collecting chamber and fills a bottom of the dust collecting chamber.

14. The robot vacuum cleaner according to claim 13 , wherein

the box body comprises an outer peripheral surface and a bottom surface connected with the outer peripheral surface, and a receiving groove is defined at a joint of the outer peripheral surface and the bottom surface; and, wherein when the lower lid closes, the lateral wall is received in the receiving groove, and the outer peripheral surface is smoothly transitioned to an outer side of the lateral wall; and

the button comprises a rotating shaft, and the button is rotatably arranged to the box body through the rotating shaft; and wherein

the first snap structure comprises a hook formed at an end of the button and a snapping part formed at the second lateral portion.

15. The robot vacuum cleaner according to claim 14 , wherein the button is configured to swing, with respect to the box body, between a first position, where the hook is snap-fitted with the snapping part to make the lower lid enclose the dust extraction port, and a second position.

16. The robot vacuum cleaner according to claim 14 , wherein the hook comprises a snapping surface facing upwards, the snapping part comprises a snapping bar, and in the first position, the snapping bar abuts against the snapping surface.

17. The robot vacuum cleaner according to claim 14 , wherein the button comprises a press board, and the rotating shaft is fixed in a middle position of the press board.

18. The robot vacuum cleaner according to claim 17 , wherein the press board comprises a first swing end and a second swing end located at two opposite sides of the rotating shaft respectively; and, wherein

the hook forms the first swing end, the first swing end swings towards a direction away from the box body, and the second swing end swings towards a direction approaching the box body; and

the box body defines a void space available for the second swing end to swing.

19. A robot vacuum cleaner, comprising:

a casing; and

a dust collection box comprising:

a box body comprising a dust extraction port at a bottom of the box body;

a lower lid comprising a first lateral portion and a second lateral portion opposite to each other, the first lateral portion being rotatably connected with the box body to enable the lower lid to open or close the dust extraction port, the second lateral portion being snap-fitted with the box body through a first snap structure; and

a button arranged on a side surface of the dust collection box, wherein the button is configured be depressible such that when the button is pushed, the lower lid rotates downward along the first lateral portion to expose the dust extraction port, wherein

the button comprises a rotating shaft, and a press board, wherein the rotating shaft is fixed in a middle position of the press board, and the button is rotatably arranged to the box body through the rotating shaft;

the button is configured to swing, with respect to the box body, between a first position, where the hook is snap-fitted with the snapping part to make the lower lid enclose the dust extraction port, and a second position; and wherein

the first snap structure comprises a hook formed at an end of the button and a snapping part formed at the second lateral portion; and, wherein

when the lower lid closes, the dust extraction port is enclosed by the lower lid.