A water tank and a sweeper using the same

Abstract

The application discloses a water tank of a sweeper and a sweeper using the water tank, and controls water flow out of the water tank by intermittently triggering an inlet water pressing valve and an outlet water pressing valve from a driven wheel set. The application has the beneficial effect that a mechanical non-electrically controlled switch valve is used to realize the purposes of water outlet from the water outlet hole when the sweeper robot is running, water outlet hole closing when the sweeper robot is stopping, and uniform water outlet, and the phenomenon of continuous water seepage and water accumulation under non-movement conditions is avoided. The mechanical switch is used to replace the electrically controlled switch, which can reduce the cost of the sweeper robot, make assembly more convenient, and improve the product experience of consumers.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of sweeping robots, and particularly relates to a water tank of a sweeping robot. BACKGROUND

[0002] With the continuous development of the smart home industry, the requirements for the working performance and cleaning efficiency of the intelligent sweeping robot are also increasing. The cleaning method of the sweeping robot not only requires that the garbage can be sucked into the dust box of the sweeping robot, but also requires that the sweeping robot itself carries a water tank to simultaneously mop the ground. The cost of the electrically controlled water tank is high, and the installation is complex. The electrically controlled water tank can be controlled by the PCBA circuit to open or close the release of water according to the working and stationary state of the machine. The water flow of the non-electrically controlled water tank cannot be released or closed synchronously in the moving state or the stationary state, so that the water flow channel is always in an open and water seepage state in the non-moving and stationary state, which causes water accumulation on the ground. This may cause serious damage to furniture, and also easily cause electrical accidents. SUMMARY

[0003] To solve the technical problems in the background art, the technical solutions of the present application are as follows:

[0004] A water tank comprises a water storage area, a water isolation area, a water inlet pressing valve, a water outlet pressing valve, and a driven wheel set. The lower part of the water isolation area has a water outlet hole penetrating through it, and the water outlet pressing valve is installed in the water outlet hole and can move in the water outlet hole. The upper part of the water isolation area has a water inlet hole penetrating through it, and the water inlet pressing valve is installed in the water inlet hole and can move in the water inlet hole. The water isolation area is also provided with an air exhaust hole.

[0005] The driven wheel set has a wheel and an axle. The axle is connected with the wheel. The axle has a long abutting portion and a short abutting portion. The long abutting portion can trigger the water inlet pressing valve and the water outlet pressing valve. The short abutting portion cannot trigger the water inlet pressing valve and the water outlet pressing valve.

[0006] The water inlet pressing valve and the water outlet pressing valve each comprise a dumbbell portion and an elastic component. The dumbbell portion comprises a dumbbell portion front end, a dumbbell portion rear end, and a dumbbell portion middle end. The elastic component is installed at the dumbbell portion middle end. The dumbbell portion front end is located in the cavity of the water isolation area. The dumbbell portion rear end is located outside the cavity of the water isolation area. One side of the elastic component is connected with the dumbbell portion front end, and the other side is connected with the inner wall of the water isolation area.

[0007] Further, in order to prevent the water in the water isolation area from leaking out when the water outlet pressing valve is not pressed, in an optimized solution of the present application, the water outlet hole is in a circular truncated cone structure. The inner hole surface on the inner side of the water isolation area is smaller than the outer hole surface on the outer side. The dumbbell portion rear end is also in a circular truncated cone structure, and the dumbbell portion rear end can cooperate with the water outlet hole without any gap.

[0008] Further, in order to prevent the water outlet speed from being too fast, in an optimized solution of the present application, a limiting column is arranged around the water outlet hole.

[0009] Further, in order to make the structure simple and meet the different length of long and short abutment section of cross section, in an optimization scheme of the present application, the connecting part is an elliptic cylinder and the cross section of the driven wheel is circular.

[0010] Further, in order to simplify the structure, in an optimization scheme of the present application, the water tank further comprises a water tank bottom plate, the water tank bottom plate is provided with a wheel hole, the driven wheel passes through the wheel hole and can roll on the ground when the sweeper runs, the connecting part is fixed with the driven wheel, and the driven wheel group can only make circular motion around the axis.

[0011] Further, in order to balance the left and right of the driven wheel group and make it easy to rotate, in an optimization scheme of the present application, the number of driven wheels is 2 and the driven wheels are located on both sides of the connecting part.

[0012] Further, in order to limit the motion of the driven wheel group to rotation around the axis by a simpler method, in an optimization scheme of the present application, the two ends of the connecting part are cylinders and the middle part is an elliptic cylinder, the center of the driven wheel has a circular hole, the circular hole and the cylinder are interference fit, and the cylinder has part outside the circular hole, the water tank of the sweeper further comprises a fixing sheet, the two sides of the fixing sheet are flat parts and the middle part is a concave part, the flat parts have hole positions, the concave part is clearance fit with the cylinder, and the driven wheel group is limited to move on the water tank bottom plate by locking the hole positions with screws.

[0013] The present application further provides a sweeper comprising a machine body, a cleaning device, a walking device and the above-mentioned water tank of the sweeper.

[0014] The present application has the following advantages: the mechanical non-electric control switch valve designed in the present application can realize water outlet from the water outlet hole when the sweeper robot is running, close the water outlet hole when the sweeper robot stops, and make the water outlet more uniform, thereby avoiding the phenomenon of continuous water seepage and accumulation under non-motion condition. The mechanical switch is used instead of the electric control type, which can reduce the cost of the sweeper robot, make the assembly more convenient and improve the product experience of consumers. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. Obviously, the drawings described in the following are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0016] Figure 1 It is the first view of the water tank of the present application;

[0017] Figure 2 It is the second view of the water tank of the present application;

[0018] Figure 3 is a third view of the water tank of the present application;

[0019] Figure 4 is a fourth view of the water tank of the present application;

[0020] Figure 5 is a cross-sectional view of the connecting part of the present application;

[0021] Figure 6 is an assembly view of the water inlet press valve of the present application;

[0022] Figure 7 is an exploded view of the water inlet press valve of the present application;

[0023] Figure 8 is a cross-section of the water tank of the present application;

[0024] Figure 9 is a water inlet press valve opening schematic view of the water tank of the present application;

[0025] Figure 10 is a water outlet press valve opening schematic view of the water tank of the present application. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solutions and advantages of the present application clearer, the present application is further described in detail below in combination with specific embodiments and with reference to the drawings. In addition, in order to facilitate the description, the orientation words such as left, right, inside and outside are used in the embodiment description, but this does not limit the protection scope of the present application.

[0027] As shown in Figures 1-10 , a water tank of a sweeper includes a water storage area 1, a water isolation area 2, a water inlet press valve 3, a water outlet press valve 4, a driven wheel set 5, a fixed sheet 6, and a water tank bottom plate 7. The water isolation area 2 has a cavity that can contain liquid. The bottom 21 of the water isolation area 2 has a water outlet hole 211 that penetrates through. The side 22 of the water isolation area 2 close to the water storage area 1 has a water inlet hole 221 that penetrates through. The water inlet press valve 3 is installed in the water inlet hole 221 and can move along the vertical direction of the plane of the side 22. The water outlet press valve 4 is installed in the water outlet hole 211 and can move along the vertical direction of the plane of the bottom 21.

[0028] As shown in Figure 3 , the inner wall of the water isolation area 2 is further provided with an air vent 23. This design is to allow air to enter so that the water in the water isolation area 2 can be smoothly discharged.

[0029] The driven wheel set 5 has a wheel 51 and an axle 52, the water tank bottom plate 7 is provided with a wheel hole 71, the wheel 51 passes through the wheel hole 71 and can roll forward on the ground when the sweeper runs, the axle 52 is divided into three parts fixed together, the two ends are cylindrical 521, and the middle is an elliptical cylinder 522, the wheel 51 has a round hole 511 in the middle, the round hole 511 and the cylindrical 521 are interference fit, so that when the wheel 51 rotates, the axle 52 can be driven to rotate synchronously.

[0030] As shown in Figure 3 , 4 , the fixed sheet 6 is a sheet structure with flat parts on both sides and a concave part 62 in the middle, the flat parts have hole positions 61, the concave part 62 is clearance fit with the cylindrical 521, and the fixed sheet 6 is fixed on the water tank bottom plate 7 by locking the hole positions 61 with screws, the concave part 62 can form a containing hole with the water tank bottom plate 7, which can limit the freedom of the driven wheel set 5, so that the driven wheel set 5 is limited to move on the water tank bottom plate 7 and can only rotate around its own axis.

[0031] As shown in Figure 5 , the cross section of the elliptical cylinder 522 is an ellipse, the ellipse has a major axis and a minor axis, the elliptical cylinder 522 has a long abutting part 5221 and a short abutting part 5222, the lengths of the long abutting part 5221 and the short abutting part 5222 are not equal, the long abutting part 5221 can trigger the water inlet press valve 3 and the water outlet press valve 4, and the short abutting part 5222 cannot trigger the water inlet press valve 3 and the water outlet press valve 4.

[0032] As shown in Figure 6 , 7 , the water inlet press valve 3 and the water outlet press valve 4 have the same structure, which includes a dumbbell part 31 and an elastic part 32, the dumbbell part 31 includes a dumbbell part front end 311, a dumbbell part rear end 312 and a dumbbell part middle end 313, the elastic part 32 is installed on the dumbbell part middle end 313, and the dumbbell part rear end 312 is a circular truncated cone structure. As shown in Figure 7 , the dumbbell part rear end 312 is fixed to the dumbbell part middle end 313 by a bolt 33.

[0033] As shown in Figure 8 , 9 , the water inlet hole 221 is a circular truncated cone structure, the hole face 2211 inside the water inlet hole 221 is smaller than the hole face 2212 outside, the dumbbell part rear end 312 can be matched with the water inlet hole 221 without gap, one end of the elastic part 32 abuts against the dumbbell part front end, and the other end abuts against the inside of the water inlet hole 221, and is in a compressed state, when the water inlet press valve 3 is not subjected to external force, the dumbbell part rear end 312 is tightly matched with the water inlet hole 221 under the action of the elastic force of the elastic part 32, and the matched part can use materials such as silica gel and rubber with good sealing performance, so that the sealing reliability is higher.

[0034] As shown in Figure 10 the water outlet hole 211 is also a circular truncated cone structure as the water inlet hole 221, the hole surface on the inside of the water barrier area 2 is smaller than the hole surface on the outside, the dumbbell rear end 312 is also a circular truncated cone structure, the dumbbell rear end 312 can be matched with the water outlet hole 211 without gap, one end of the elastic component 32 abuts against the dumbbell front end 311, the other end abuts against the inside of the water outlet hole 211, and is in a compressed state, when the water outlet pressing valve 4 is not subjected to external force, the dumbbell rear end 312 is tightly matched with the water outlet hole 211 under the action of the elastic force of the elastic component 32, and the matched part can use materials with good sealing property such as silica gel and rubber.

[0035] As shown in Figure 1 the bottom 21 is further provided with a plurality of limiting columns 212 around the water outlet hole 211, the limiting columns 212 are used to limit the pressed degree of the water outlet pressing valve 4, so that the water flow is more uniform.

[0036] In the actual use process, when the sweeper works normally, that is, during the traveling process, since the wheel 51 is circular and contacts the ground, the wheel 51 will roll and rotate with the traveling of the sweeper, and then drive the wheel shaft 52 to also rotate, and the elliptical cylinder 522 of the wheel shaft 52 will also rotate with the wheel 51, and the long abutting part 5221 will intermittently trigger the water inlet pressing valve 3 and the water outlet pressing valve 4.

[0037] As shown in Figure 9 at this time, the long abutting part 5221 rotates to a position where it can trigger the water inlet pressing valve 3, the elliptical cylinder 522 applies a pressure to overcome the front end of the dumbbell part 311, which is greater than the elastic force of the elastic component 32, so that the whole water inlet pressing valve 3 moves to the outside of the water barrier area 2, and a gap is generated between the water inlet pressing valve 3 and the water inlet hole 221, at this time, the water in the water storage area 1 will flow into the water barrier area 2 along the gap, the water flow direction is shown by the arrow, and the water amount in the water barrier area 2 increases. Figure 9

[0038] As shown in Figure 10 at this time, the long abutting part 5221 rotates to a position where it can trigger the water outlet pressing valve 4, the elliptical cylinder 522 applies a pressure to overcome the front end of the dumbbell part 311, which is greater than the elastic force of the elastic component 32, so that the whole water outlet pressing valve 4 moves to the outside of the water barrier area 2, and a gap is generated between the water outlet pressing valve 4 and the water outlet hole 211, at this time, the water in the water barrier area 2 will flow out of the water barrier area 2 along the gap, the water flow direction is shown by the arrow, and the water amount in the water barrier area 2 decreases. Figure 9

[0039] Since the water inlet pressing valve 3 and the water outlet pressing valve 4 are both triggered by the long abutting part 5221, if the elliptical cylinder 522 does not rotate, that is, the wheel 51 does not move and the sweeper does not travel, the elliptical cylinder 522 will remain stationary, and assuming that the water amount in the water storage area 1 is sufficient, three situations will occur:​​

[0040] Case one: the long abutment 5221 is kept in the position that neither the water inlet press valve 3 nor the water outlet press valve 4 is triggered, then the water amount in the water isolation area 2 remains unchanged;

[0041] Case two: if the long abutment 5221 is kept in the position that the water inlet press valve 3 is triggered, then the water isolation area 2 will be filled with water from the water storage area 1, but since the water outlet press valve 4 will not be triggered, the water in the water isolation area 2 will not flow to the ground before the robot moves, and at this time the water storage area and the water isolation area are connected by the water inlet hole 211, and there is only one outlet of the air exhaust hole 23, due to the atmospheric pressure, the water will not flow out of the air exhaust hole;

[0042] Case three: if the long abutment 5222 is kept in the position that the water outlet press valve 4 is triggered, then a small amount of water in the water isolation area 2 will flow out until the water in the water isolation area 2 is exhausted, but since the water inlet press valve 3 will not be triggered, the water in the water isolation area 2 will not be replenished before the robot moves.

[0043] Compared with the prior art, the beneficial effects of the present application are: a mechanical non-electrically controlled on-off valve, which realizes the purpose of water outlet of the water outlet hole when the robot moves and the purpose of water outlet hole closing when the robot stops, avoiding the occurrence of the phenomenon of continuous water seepage and water accumulation in the non-movement state. Using a mechanical switch instead of an electrically controlled switch can reduce the cost of the robot, make the assembly more convenient, and improve the product experience of consumers.

[0044] Those skilled in the art should understand that the above description is only a specific embodiment of the present application and is not intended to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A water tank characterized by, The water tank comprises a water storage area (1), a water isolation area (2), a water inlet pressing valve (3), a water outlet pressing valve (4), and a driven wheel set (5). The lower part (21) of the water isolation area (2) has a water outlet hole (211) penetrating through it. The water outlet pressing valve (4) is installed in the water outlet hole (211) and can move in the water outlet hole (211). The water isolation area (2) has a water inlet hole (221) penetrating through it. The water inlet pressing valve (3) is installed in the water inlet hole (221) and can move in the water inlet hole (221). The water isolation area (2) is also provided with an exhaust hole (23). The driven wheel set (5) has a wheel (51) and an axle (52). The axle (52) is connected with the wheel (51). The axle (52) has a long abutting part (5221) and a short abutting part (5222). The long abutting part (5221) can trigger the water inlet pressing valve (3) and the water outlet pressing valve (4). The short abutting part (5222) cannot trigger the water inlet pressing valve (3) and the water outlet pressing valve (4). The water inlet pressing valve (3) and the water outlet pressing valve (4) each comprise a dumbbell part (31) and an elastic part (32). The dumbbell part (31) comprises a dumbbell part front end (311), a dumbbell part rear end (312), and a dumbbell part middle end (313). The elastic part (32) is installed on the dumbbell part middle end (313). The dumbbell part front end (311) is located in the cavity of the water isolation area (2). The dumbbell part rear end (312) is located outside the cavity of the water isolation area (2). One side of the elastic part (32) is connected with the dumbbell part front end (311), and the other side is connected with the inner wall of the water isolation area (2). The water inlet hole (221) has a circular truncated cone structure. The inner hole surface (2211) located on the inner side of the water isolation area (2) is smaller than the outer hole surface (2212) located on the outer side. The dumbbell part rear end (312) also has a circular truncated cone structure, and the dumbbell part rear end (312) can cooperate with the water inlet hole (221) without gaps. The water outlet hole (211) has a circular truncated cone structure. The inner hole surface (2211) located on the inner side of the water isolation area (2) is smaller than the outer hole surface (2212) located on the outer side. The dumbbell part rear end (312) also has a circular truncated cone structure, and the dumbbell part rear end (312) can cooperate with the water outlet hole (211) without gaps. The water outlet hole (211) is surrounded by a limiting column (212).

2. A water tank according to claim 1, characterized in that The axle (52) is partially an elliptical cylinder, and the cross section of the wheel (51) is circular.

3. A water tank according to claim 2, wherein The water tank further comprises a water tank bottom plate (7). The water tank bottom plate (7) is provided with a wheel hole (71). The wheel (51) passes through the wheel hole (71) and can roll on the ground when the sweeper operates. The axle (52) is fixed with the wheel (51). The driven wheel set (5) can only make circular motion around its axis.

4. A water tank according to claim 3, wherein The number of wheels (51) is two, and the wheels (51) are located on both sides of the axle (52).

5. A water tank as claimed in claim 4, wherein The two ends of the wheel axle (52) are cylindrical (521), the middle part is elliptical (522), the center of the wheel (51) has a round hole (511), the round hole (511) and the cylindrical (521) are interference fit, and the cylindrical (521) has part outside the round hole (511), the water tank of the sweeper further comprises a fixing sheet (6), the two sides of the fixing sheet (6) are flat parts, the middle part is a recessed part (62), the flat parts have hole positions (61), the recessed part (62) is clearance fit with the cylindrical (521), and the driven wheel set (5) is limited to move on the water tank bottom plate (7) by locking the hole positions (61) through screws.

6. A sweeper comprising a machine body, a sweeping device, a traveling device, characterized by, Further comprising the water tank of any one of claims 1-5.

Images