Self-overflowing water tank and cleaning robot

Abstract

The present invention provides a self-overflowing water tank and a cleaning robot. A water storage space is provided within the self-overflowing water tank body, a water outlet is provided at the bottom of the water storage space, and an air hole is provided on the tank body that communicates with the water storage space. The tank body is also provided with: an actuating member that can move relative to the tank body and can intermittently block the air hole during movement; and a moving wheel disposed at the bottom of the tank body to support the movement of the tank body relative to a working surface, and the actuating member is driven to intermittently block the air hole during movement of the moving wheel. The water tank of the present invention drives the actuating member to intermittently block and open an air flow channel during movement of the moving wheel at the bottom of the tank, thereby changing the air pressure inside the water tank, allowing water in the water tank to flow out when the air flow channel is unobstructed and stopping water flow when the air flow channel is blocked.

Description

Technical Field

[0001] The present invention relates to the technical field of cleaning equipment, and in particular to a self-overflowing water tank and a cleaning robot. Background Art

[0002] To allow the self-overflowing water tanks on existing cleaning robots to leak water, they have air holes connected to the outside of the tank. This pore balances the air pressure inside and outside the tank, allowing water to seep out. However, without a controllable closure mechanism, the pores constantly balance the air pressure inside and outside the tank, causing the water to continuously leak, resulting in excessive water accumulation on the mop and forming water stains on the floor. Summary of the Invention

[0003] The purpose of the present invention is to provide a self-overflowing water tank and a cleaning robot, which can solve the problems in the prior art.

[0004] Specifically, the present invention provides a self-overflowing water tank, including a box body, a water storage space provided in the box body, a water outlet hole provided at the bottom of the water storage space, an air hole connected to the water storage space provided on the box body, and the box body further provided with:

[0005] The actuating member is movable relative to the box body and can intermittently block the air hole during the movement;

[0006] The moving wheel is arranged at the bottom of the box body to support the box body to move relative to the working surface, and drives the action member to intermittently block the air hole during the movement of the moving wheel.

[0007] With the above structure, when the moving wheel supports the box to move relative to the working surface, the moving wheel drives the operating part to intermittently block the air flow channel, so that the air pressure in the box changes between the blockage and unblocking of the air flow channel. When the air flow channel is blocked, the air pressure inside the box is lower than the air pressure outside the box, and the external air pressure causes the liquid in the box to be unable to flow out from the water outlet; when the air flow channel is unblocked, the internal air pressure is balanced with the external air pressure, and the liquid flows out from the water outlet under the action of gravity.

[0008] Preferably, the actuating member includes a plug and a driving member. The plug is movably arranged in the air flow channel. One end of the driving member is connected to the plug, and the other end drives the plug to move according to the movement posture change of the moving wheel.

[0009] Preferably, the actuating member further comprises a spring, one end of which is connected to the plug, and the other end of which is connected to the box body.

[0010] Furthermore, the driving member includes two magnets arranged opposite to each other, one of which is fixed on the plug and the other is fixed on the moving wheel.

[0011] Furthermore, the driving member is a connecting rod, one end of which is rotatably fixed to the plug, and the other end of which is rotatably and eccentrically fixed to the moving wheel.

[0012] Preferably, the actuating member is a convex portion provided on the moving wheel relative to the air hole.

[0013] Preferably, protrusions are distributed at intervals on the outer ring of the moving wheel.

[0014] Preferably, the air hole extends from the bottom of the box body to the top of the water storage space to form an air flow channel, and there is a gap between the opening of the air flow channel in the box body and the top of the water storage space.

[0015] The present application also provides a cleaning robot comprising a body, on which the aforementioned self-overflowing water tank is detachably mounted, wherein the movable wheels move with the body on a work surface and control the flow state of the air flow channel during movement. A detachable rag is also mounted on the bottom of the self-overflowing water tank, and liquid flowing out of the self-overflowing water tank soaks the rag.

[0016] In the embodiment of the present invention, the following beneficial effects are achieved: during the movement of the moving wheel at the bottom of the water tank, the driving member is driven to intermittently block and open the air flow channel to change the air pressure inside the water tank, allowing the water in the water tank to flow out when the air flow channel is unobstructed, and stop flowing out when the air flow channel is blocked. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. Obviously, the drawings described below are some embodiments of the embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 It is a structural cross-sectional view of the self-overflowing water tank in the present invention;

[0019] Figure 2 Schematic diagram of the structure of the actuating member and the moving wheel in the first embodiment of the present invention;

[0020] Figure 3 Schematic diagram of the motion state of the action member and the moving wheel in the first embodiment of the present invention Figure I ;

[0021] Figure 4 Schematic diagram of the motion state of the action member and the moving wheel in the first embodiment of the present invention Figure II ;

[0022] Figure 5 Schematic diagram of the motion state of the action member and the moving wheel in the second embodiment of the present invention Figure I ;

[0023] Figure 6 Schematic diagram of the motion state of the action member and the moving wheel in the second embodiment of the present invention Figure II ;

[0024] Figure 7 This is a cross-sectional view of the structure of the moving wheel in the third embodiment of the present invention;

[0025] Figure 8 FIG. 2 is another structural cross-sectional view of the moving wheel in an embodiment of the present invention. DETAILED DESCRIPTION

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise" and "counterclockwise" indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0028] The self-overflowing water tank structure described in the present invention is shown in FIG. Figures 1 to 6 As shown, the self-overflowing water tank includes a box body 100, a water outlet hole (not shown) is provided at the bottom 101 of the box body, and an air hole is provided on the box body 100, one end of which is connected to the water storage space 110 of the box body 100 and the other end is connected to the outside of the box body 100. The air hole extends from the bottom 101 of the box body to the top of the water storage space 110 to form an air flow channel 120. The opening 1201 of the air flow channel 120 is located in the box body 10 and has a gap with the top of the water storage space 110. The box body 100 is also provided with:

[0029] The actuating member is movable relative to the housing 100 and can intermittently block the air flow passage 120 during the movement;

[0030] A concave cavity is formed at the bottom 101 of the box body. A shaft sleeve 1014 is provided inside the concave cavity. The axle 201 of the moving wheel 200 is connected to the shaft sleeve 1014 .

[0031] The moving wheels 200 support the box body 100 at the bottom 101 of the box body to move relative to the working surface (ground), and drive the actuating member to intermittently block the air flow channel 120 during the movement of the moving wheels 200 .

[0032] like Figure 1 As shown, the actuating member includes a plug 300 and a driving member. The plug 300 is movably arranged in the air flow channel 120. One end of the driving member is connected to the plug 300, and the other end is connected to the moving wheel 200. The driving member drives the plug 300 to move according to the change in the movement posture of the moving wheel 200.

[0033] With the above structure, when the moving wheels 200 support the housing 100 in motion relative to the work surface, the moving wheels 200 drive the actuator to intermittently block the air passage 120, causing the air pressure within the housing 100 to fluctuate between blocked and unblocked air passage 120. When the air passage 120 is blocked by the actuator, the internal air pressure of the water storage space 110 is lower than the external air pressure of the housing 100, preventing the liquid in the water storage space 110 from flowing out of the outlet. When the air passage 120 is unblocked, the internal air pressure of the water storage space 110 balances with the external air pressure, and the liquid flows out of the outlet under the action of gravity.

[0034] Example 1

[0035] See also Figure 1 An air flow channel 120 communicating with the water storage space 110 is provided on the bottom 101 of the box body. A concave cavity is formed on the bottom 101 of the box body at one end of the air flow channel 120 close to the bottom 101 of the box body. A plug 300 and a moving wheel 200 are provided in the concave cavity. The concave cavity is also provided with a lower cover 1011. The lower cover 1011 is provided with screw holes 1012 and is fixed to the box body 100 by screws passing through the screw holes 1012. The lower cover 1011 constitutes part of the bottom 101 of the box body, wherein the moving wheel 200 is installed on the lower cover 1011.

[0036] The plug 300 is used as an actuator to control the on / off state of the air channel 120 ; the moving wheel 200 is provided on the lower cover 1011 , and the moving wheel 200 carries the box body 100 to move on the ground.

[0037] Specifically, if Figure 3 and Figure 4As shown, the relative movement between the plug 300 and the moving wheel 200 is achieved through the interaction of two magnets with identical or opposite polarities. A first magnet 3010 is fixed to the plug 300, and a second magnet 2010 is fixed to the moving wheel 200. The second magnet 2010 is intermittently opposed to the first magnet 3010 as the moving wheel 200 rotates. As the moving wheel 200 moves, the magnetic force between the magnets drives the plug 300 to intermittently insert or remove it from the air flow passage 120, thereby unblocking or unclogging the air flow passage 120.

[0038] In the case where the magnetic poles of the first magnet 3010 and the second magnet 2010 are opposite, see Figure 3 As shown, when the second magnet 2010 is deflected to a position offset from the first magnet 3010, the first magnet 3010 is in a state of blocking the air flow channel 120, and the air pressure in the water storage space 110 is lower than the external air pressure, so that the stored liquid cannot pass through the water outlet due to gravity.

[0039] See also Figure 4 As shown, when the second magnet 2010 is deflected to a position opposite to the first magnet 3010, the first magnet 3010 approaches the second magnet 2010 under the action of gravity, allowing the air flow channel 120 to be unobstructed, so that the air pressure in the water-retaining air 110 is balanced with the outside, and the liquid can also flow out of the water outlet due to its own weight.

[0040] In addition, when the magnetic poles of the first magnet 3010 and the second magnet 2010 at opposite ends are the same, when the second magnet 2010 is deflected to a position opposite to the first magnet 3010, the first magnet 3010 is repelled by the repulsive force and moves upward toward the air flow channel 120, blocking the air flow channel 120, making the air pressure in the water storage space 110 lower than the external air pressure, so that the stored liquid cannot pass through the water outlet due to its own gravity.

[0041] With the structure in the above embodiment, two second magnets 2010 having the same and opposite magnetic poles as the first magnet 3010 are alternately arranged on the moving wheel 200. This design allows the first magnet 3010 to be subjected to repulsive and attractive forces for a short period of time during the rotation of the moving wheel 200. When the rotation speed of the moving wheel 200 is fast enough, it can even act as a piston pump, injecting or extracting air into or from the water storage space 110.

[0042] By the above external forces, such as Figure 2As shown, a spring 1020 is provided between the stopper 300 and the moving wheel 200. Specifically, a first positioning post 302 is provided on the stopper 300, and a second positioning post 1013 is provided on the bottom 101 of the box body. One end of the spring 1020 is sleeved on the first positioning post 1020, and the other end is sleeved on the second positioning post 1013. In the illustrated structure, it can be seen that the spring 1020 can provide an upward force to the stopper 300, allowing the stopper 300 to block the air flow channel 120. However, if the magnetic force is greater than the tension of the spring 1020, the spring 1020 can be compressed, causing the stopper 300 to descend and away from the air flow channel 120.

[0043] Example 2

[0044] like Figure 5 and Figure 6 As shown, the driving member that drives the stopper 300 is a connecting rod 400. One end of the connecting rod 400 is rotatably fixed to the stopper 300 by a hinged connection, and the other end of the connecting rod 400 is rotatably fixed to a position outside the center point of the moving wheel 200 by a similar hinged connection. As the moving wheel 200 rotates, one end of the connecting rod 400 rotates with the moving wheel 200, pulling the stopper 300 up and down.

[0045] See also Figure 5 As shown, the connection point between the connecting rod 400 and the moving wheel 200 rises to the highest point during the rotation of the moving wheel 200, and then the connecting rod 400 pushes the plug 300 to rise and contact the air flow channel 120, allowing the plug 300 to block the air flow channel.

[0046] See also Figure 6 As shown, the connection point between the connector 400 and the moving wheel 200 rises to the lowest point during the rotation of the moving wheel 200, and then the connecting rod 400 pulls the plug 300 down, allowing the plug 300 to separate from the air flow channel 120, so that the air flow channel remains unobstructed.

[0047] Example 3

[0048] See also Figure 7 As shown, a design scheme for combining an actuating member with a moving wheel 200 is shown. In this design, the wheel surface of the moving wheel 200 has at least one recess 2011. The protrusion that protrudes more than the recess 2011 contacts the air flow channel 120 and seals the air flow channel 120 during the contact process, preventing air outside the water tank from entering the water storage space 110. When the recess 2011 and the air flow channel 120 are positioned relative to each other, the air flow channel 120 is exposed to the outside air, and the outside air can enter the water storage space 110, thereby balancing the air pressure in the water tank and allowing water to seep out of the water outlet through its own weight.

[0049] Taking into account that friction will be generated when the protrusion contacts the air flow channel 120, the protrusion is made of a flexible material, such as a film or fluff, which can be in interference contact with the air flow channel 120 and deformed during the contact process to fill the air flow channel 120, and use its deformation characteristics to reduce the friction effect with the air flow channel 120.

[0050] By using the self-overflowing water tank structure in the above three embodiments, see Figure 8 As shown, protrusions 2012 are spaced apart on the outer ring of the moving wheel 200. This creates an up-and-down vibration when the moving wheel 200 is moved on the ground, preventing the water outlet from being clogged by bubbles. Of course, the vibration generated by the moving wheel 200 can be transmitted to the water tank, so bubbles that enter the water outlet can also be displaced by the vibration, causing them to be eliminated from the water outlet.

[0051] The present invention also exemplifies a cleaning robot, comprising a body, on which a self-overflowing water tank is detachably provided through a snap-fit ​​structure, the moving wheels on the self-overflowing water tank move along with the body on a working surface, and during the movement, the coordination state of the plug and the air flow channel is controlled to change the air pressure state in the water storage space, and a rag is detachably provided on the bottom of the self-overflowing water tank by means of Velcro or covering the edge of the bottom of the tank, and the liquid flowing out of the self-overflowing water tank soaks into the rag.

[0052] The above disclosure is merely a preferred embodiment of the present invention and certainly cannot be used to limit the scope of the present invention. Therefore, equivalent changes made according to the claims of the present invention are still within the scope of the present invention.

Claims

1. A self-overflowing water tank, comprising a box body, a water storage space provided in the box body, a water outlet provided at the bottom of the water storage space, and an air hole in communication with the water storage space provided on the box body, characterized in that: The box also has: The actuating member is movable relative to the box body and can intermittently block the air hole during the movement; A moving wheel is provided at the bottom of the box body to support the box body to move relative to the working surface, and drives the actuating member to intermittently block the air hole during the movement of the moving wheel; The actuating member includes a plug and a driving member. The plug is movably arranged in the air flow channel. One end of the driving member is connected to the plug, and the other end drives the plug to move when the movement posture of the moving wheel changes. Wherein, the driving member is one of a connecting rod and two magnets arranged opposite to each other; Among them, one of the two oppositely arranged magnets is fixed on the plug, and the other magnet is fixed on the moving wheel; Wherein, one end of the connecting rod is rotatably fixed on the plug, and the other end of the connecting rod is rotatably and eccentrically fixed on the moving wheel; The actuating member is a convex portion provided on the moving wheel relative to the air hole; Protrusions are distributed at intervals on the outer ring of the moving wheel.

2. The self-overflowing water tank according to claim 1, characterized in that: The action member further comprises a spring, one end of which is connected to the plug, and the other end of which is connected to the box body.

3. The self-overflowing water tank according to claim 1, characterized in that: The air hole extends from the bottom of the box body to the top of the water storage space to form an air flow channel, and a gap is formed between the opening of the air flow channel in the box body and the top of the water storage space.

4. A cleaning robot, comprising a body, characterized in that: A self-overflowing water tank as claimed in any one of claims 1 to 3 is detachably provided on the body.

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