CN219038136U - Liquid level detection structure of cleaning equipment water tank and cleaning equipment - Google Patents

Abstract

The utility model provides a liquid level detection structure of a cleaning device water tank and the cleaning device. The liquid level detection structure of the cleaning equipment water tank comprises a limiting structure, a floating assembly and an induction piece, wherein the limiting structure is arranged in the water tank; the floating assembly is arranged in the limiting structure, the limiting structure is used for limiting the floating assembly, and the floating assembly is configured to move along with the change of the liquid level in the water tank; the sensing element is configured to generate a sensing signal in response to movement of the floatation assembly; wherein, limit structure keeps away from one side of floating subassembly and is provided with additional strengthening. This additional strengthening of liquid level detection structure plays the effect that carries out the structural reinforcement to limit structure, improves limit structure's structural stability, avoids limit structure to appear the condition of position slope to reduce the risk of floating subassembly clamping in limit structure, improve reliability and the functionality that the subassembly used that floats, thereby reduce the probability and the maintenance cost of trouble maintenance, improve user and use experience and feel.

Description

Liquid level detection structure of cleaning equipment water tank and cleaning equipment

Technical Field

The utility model relates to the technical field of cleaning equipment, in particular to a liquid level detection structure of a cleaning equipment water tank and the cleaning equipment.

Background

With the development of information technology, innovation in the aspect of robots is more and more different, and many robots gradually enter our daily life. The sweeping and mopping robot is used as one of intelligent household appliances, and can automatically finish the floor sweeping and mopping work in a room through an artificial intelligent algorithm, but with the improvement of the use requirement of a user, the robot is required to be mopped automatically.

The cleaning robot generally comprises a water tank for storing water, a liquid level detection device for detecting the liquid level of the water in the water tank, and a mop, wherein the water in the water tank can be supplied to the mop to realize wet cleaning.

Disclosure of Invention

The utility model provides a liquid level detection structure of a cleaning device water tank and cleaning device.

According to a first aspect of the present utility model, there is provided a liquid level detection structure of a cleaning device water tank, comprising:

the limiting structure is arranged in the water tank;

a float assembly disposed within the limit structure, the float assembly configured to move with a change in a liquid level within the tank, the limit structure for limiting the float assembly;

a sensing member configured to generate a sensing signal in response to movement of the floatation assembly;

wherein, limit structure is kept away from one side of floating subassembly is provided with additional strengthening.

In some embodiments, the limiting structure comprises a plurality of baffles, a plurality of baffles are arranged around the floating assembly to limit the floating assembly, and at least one of the baffles is provided with the reinforcing structure.

In some embodiments, the limiting structure further comprises a portion of the tank sidewall, and the portion of the tank sidewall and the plurality of the baffles are disposed around the floating assembly to limit the floating assembly.

In some embodiments, a water inlet is formed between two adjacent enclosing members or between the enclosing members and the side wall of the partial water tank, a guide cavity is formed in the limiting structure, the floating assembly is arranged in the guide cavity, and the guide cavity is communicated with the inner cavity of the water tank through the water inlet.

In some embodiments, the partial tank sidewall is formed with a recess, and the recess and the plurality of baffles form the limit structure.

In some of these embodiments, the reinforcing structure comprises at least one reinforcing rib.

In some of these embodiments, the enclosure comprises:

the first enclosing piece is connected to the side wall of the water tank;

the second enclosing piece is arranged at intervals with the side wall of the water tank;

the number of the reinforcing ribs which are correspondingly arranged on the first enclosing member is smaller than that of the reinforcing ribs which are correspondingly arranged on the second enclosing member.

In some embodiments, the reinforcing ribs are arranged in parallel at intervals or are arranged in a crossing manner.

In some of these embodiments, the reinforcing structure is attached to the tank floor.

In some embodiments, the limit structure, the reinforcement structure and the water tank are integrally formed.

In some of these embodiments, the side of the limit structure facing the floatation assembly is provided with a guiding structure for guiding the floatation assembly.

According to a second aspect of the present utility model, an embodiment of the present utility model further provides a cleaning device, including a water tank and the above-mentioned liquid level detection structure of the cleaning device water tank, where the liquid level detection structure of the cleaning device water tank is disposed in the water tank, and is used for detecting the liquid level of the water tank.

One embodiment of the present utility model has the following advantages or benefits:

according to the liquid level detection structure of the water tank of the cleaning equipment, provided by the embodiment of the utility model, the floating assembly floats in the water tank and moves along with the change of the liquid level in the water tank, and the sensing piece responds to the relative movement of the floating assembly and generates a sensing signal so as to detect the liquid level of the water supply tank. The limiting structure plays a role of limiting the floating assembly, and is used for enclosing the floating assembly and limiting the movable range of the floating assembly, so that floating deflection of the floating assembly in a larger range in the floating process is avoided, and the accuracy of liquid level detection is improved.

The additional strengthening plays the effect that carries out the structural reinforcement to limit structure, improves limit structure's structural stability, avoids limit structure to appear the condition of position slope to reduce the risk that floats the subassembly jamming in limit structure, improve reliability and the functionality that floats the subassembly and use, thereby reduce trouble maintenance's probability and maintenance cost, improve the user and use and experience and feel.

According to the cleaning equipment provided by the embodiment of the utility model, the liquid level of water in the water tank can be detected by utilizing the liquid level detection structure of the water tank of the cleaning equipment, so that the cleaning equipment is more intelligent and the user experience is improved.

Drawings

The above and other features and advantages of the present utility model will become more apparent by describing in detail exemplary embodiments thereof with reference to the attached drawings.

FIG. 1 is a schematic view showing a structure of a liquid level detecting structure of a tank of a cleaning apparatus according to an embodiment of the present utility model;

FIG. 2 is a schematic view showing a structure of a hidden sensor of a liquid level detecting structure of a water tank of a cleaning apparatus according to an embodiment of the present utility model;

FIG. 3 is a schematic view showing a structure of a liquid level detection structure of a water tank of a cleaning device according to an embodiment of the present utility model with a floating component hidden;

FIG. 4 shows an enlarged partial schematic view of FIG. 3;

fig. 5 is a schematic view showing a structure of a floating unit in a liquid level detecting structure of a tank of a cleaning apparatus according to an embodiment of the present utility model.

Wherein reference numerals are as follows:

100. a water tank; 101. a sidewall; 102. a bottom wall;

1. a limit structure; 2. a floatation assembly; 3. a reinforcing structure; 4. an induction member;

11. a fence; 111. a first enclosure; 112. a second enclosure;

12. a water inlet; 13. a recessed portion; 14. a guide structure; 141. a claw; 142. a guide chamber;

21. a floating housing; 22. a permanent magnet;

31. reinforcing ribs.

Detailed Description

Example embodiments will now be described more fully with reference to the accompanying drawings. However, the exemplary embodiments can be embodied in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus detailed descriptions thereof will be omitted.

Cleaning devices such as a sweeping robot generally have functions of sweeping, dust collection, mopping and the like, and water in a water tank is supplied to a mop so as to realize the mopping function. Due to the limited amount of water in the tank, water in the tank may be depleted during mopping. If the cleaning apparatus performs the mopping operation in the anhydrous state, it may cause a bad mopping effect, it is difficult to achieve a predetermined cleaning effect, and in addition, the structure of the robot itself may be damaged, resulting in deterioration of the mopping function of the robot.

In order to solve this problem, as shown in fig. 1, the present embodiment provides a liquid level detection structure of a water tank of a cleaning device, which is suitable for the cleaning device, and the cleaning device may be a cleaning device such as a sweeping robot or a mopping machine, or may be other types of cleaning devices, such as a floor cleaning machine. The liquid level detection structure of the cleaning device tank includes a floatation assembly 2 and a sensing member 4, the floatation assembly 2 is disposed within the tank 100, the floatation assembly 2 is configured to move with a change in the liquid level within the tank 100, and the sensing member 4 is configured to respond to the relative movement of the floatation assembly 2 and generate a sensing signal. The water tank 100 is used for containing a cleaning liquid, which may be water, water with a detergent added thereto, or other liquid with cleaning capability.

According to the liquid level detection structure of the cleaning device water tank, the floating assembly 2 can float in the water tank 100, the floating assembly 2 can move along with the liquid level change in the water tank 100, the floating assembly 2 is enabled to be close to or far away from the sensing piece 4, and the sensing piece 4 responds to the relative movement of the floating assembly 2 and generates a sensing signal so as to detect the liquid level of the water supply tank 100.

From the intensity of the sensing signal generated by the sensing member 4, the distance between the floating assembly 2 and the sensing member 4 can be determined, so that the level of the liquid in the water tank 100 can be determined.

It will be appreciated that the sensing signal generated by the sensing element 4 is a linear signal that increases or decreases progressively with the distance of the float assembly 2, rather than a signal that is only in the open and closed states. Because the signal intensity of the sensing signal and the distance between the sensing piece 4 and the floating assembly 2 are in one-to-one linear relation, the corresponding distance can be obtained according to the signal intensity, and thus the accurate value of the liquid level can be obtained.

Under the action of the buoyancy of the liquid in the water tank 100, the floating assembly 2 may move up and down in a first direction, which may be a height direction of the water tank 100, and when the floating assembly 2 has a cylindrical structure, the first direction may be specifically an axial direction of the floating assembly 2.

In one embodiment, as shown in fig. 1, the liquid level detection structure of the cleaning device water tank further comprises a limiting structure 1, wherein the limiting structure 1 is arranged in the water tank 100, the floating assembly 2 is arranged in the limiting structure 1, and the limiting structure 1 is used for limiting the floating assembly 2.

Wherein, floating subassembly 2 sets up in limit structure 1, and limit structure 1 plays the effect of spacing floating subassembly 2 to enclose fender to floating subassembly 2, avoid floating subassembly 2 to appear the floating skew of great scope along the horizontal direction in floating process, inject the range of motion of floating subassembly 2, in order to improve the accuracy of liquid level detection.

It can be understood that the limit structure 1 is disposed in the water tank 100, the limit structure 1 is fixedly connected with the bottom surface of the water tank, there may be insufficient connection strength, in the long-term use process, the limit structure 1 may incline, when the limit structure 1 inclines towards the direction of the floating assembly 2, there is a risk that the limit structure 1 will lock the floating assembly 2, and the accuracy of detecting the liquid level is affected, at this time, the water tank 100 may be in a full liquid state actually, but the water tank 100 is detected to be in an unfilled state by the sensing element 4 and the floating assembly 2, and cleaning liquid is continuously injected into the water tank 100, so that the cleaning liquid in the water tank 100 overflows and is wasted; it may also occur that water tank 100 is actually in a liquid shortage state, but water tank 100 is detected to be in a cleaning liquid sufficient state by sensing member 4 and floating assembly 2, and cleaning liquid cannot be timely supplied to water tank 100, resulting in a situation that the cleaning liquid in water tank 100 is completely consumed during the sweeping and dragging process. If the cleaning device is in a liquid-free state, the cleaning device may damage the structure of the cleaning device, increase the probability of fault repair and the production cost, and cause the cleaning device to have poor cleaning function, so as to influence the use experience of a user. When limit structure 1 inclines to the direction of keeping away from floating subassembly 2, will reduce limit structure 1's spacing ability, probably can lead to floating subassembly 2 not according to the first direction reciprocates, and the skew of horizontal direction appears, increases the distance between floating subassembly 2 and the sensing piece 4, and then leads to the liquid level measurement inaccurate.

In order to solve this problem, as shown in fig. 1-2, the limit structure 1 provided in this embodiment is provided with a reinforcing structure 3 on a side away from the floating assembly 2.

One side that floats subassembly 2 is kept away from at limit structure 1 is provided with additional strengthening 3, be provided with at limit structure 1's inboard promptly and float subassembly 2, be provided with additional strengthening 3 in limit structure 1's outside, additional strengthening 3 can not produce the interference to float subassembly 2, and additional strengthening 3 plays the effect that carries out structural reinforcement to limit structure 1, the structural stability of limit structure 1 is improved, avoid limit structure 1 to appear the condition of slope, reduce the risk that floats subassembly 2 jamming in limit structure 1, avoid the emergence of the inaccurate condition of liquid level measurement.

The reinforcing structure 3 can be connected with the outer side of the limit structure 1 and the bottom surface of the water tank 100, which is equivalent to increasing the connection area between the limit structure 1 and the bottom wall 102 of the water tank 100, improving the fixing effect of the limit structure 1 relative to the bottom surface of the water tank 100 and reducing the risk of the limit structure 1 tilting.

It should be noted that the shape and structure of the limiting structure 1 and the floating assembly 2 are adapted. The profile of the floating assembly 2 can be a cylindrical structure, and the profile of the limit structure 1 can be similar to the cylindrical structure; the appearance of the floating assembly 2 can also be a cuboid structure, and then the cross section appearance of the limiting structure 1 can be similar to a rectangular structure, the appearance structures of the floating assembly 2 and the limiting structure 1 are not limited in this embodiment, and can be adjusted according to actual production conditions, so long as the shape structures of the limiting structure 1 and the floating assembly 2 are matched, namely, the limiting structure 1 plays a shape following effect on the floating assembly 2, and the shape following effect is within the protection scope of this embodiment.

In one embodiment, as shown in fig. 2-3, the spacing structure 1 comprises a plurality of baffles 11, the plurality of baffles 11 being provided around the floating assembly 2 to spacing it, at least one of the plurality of baffles 11 being provided with a reinforcing structure 3.

Wherein, limit structure 1 is split type structure, and limit structure 1's a plurality of fender piece 11 of enclosing are located around floating subassembly 2, realize the spacing to floating subassembly 2, are equivalent to a plurality of fender pieces 11 that independently set up and wrap up floating subassembly 2 in its inside, only utilize a plurality of fender pieces 11 that independently set up, just can realize the spacing to floating subassembly 2. Under the co-action of the plurality of baffles 11, to reduce the occurrence of a greater range of movement of the floatation assembly 2. With the reinforcing structure 3, the structural strength of the at least one enclosure 11 can be increased.

In one embodiment, as shown in fig. 2-3, the spacing structure 1 further includes a portion of the tank sidewall, which is co-located with a plurality of baffles 11 around the floatation assembly 2 to limit it.

Wherein, part of the side wall of the water tank is specifically a part of the side wall 101 of the water tank 100, and the limiting structure 1 not only comprises a surrounding baffle 11, but also comprises a part of the side wall 101. The limiting structure 1 is jointly formed by the plurality of enclosing members 11 and part of the water tank side wall, and the risk of the inclination of the limiting structure 1 can be reduced by taking part of the structure of the water tank side wall as a part of the limiting structure 1 due to the fact that the water tank side wall and the bottom surface of the water tank 100 have good connection effect and are not easy to deform.

It can be appreciated that the position of the limiting structure 1 can be freely and flexibly set, and the limiting structure 1 can be set at the edge position close to the water tank 100 or at the middle position of the water tank 100. When limit structure 1 sets up in the border position that is close to water tank 100, a plurality of fender piece 11 and partial water tank lateral wall can be the interval setting, enclose the side wall 101 of fender piece 11 and water tank 100 promptly and do not contact, and at this moment, a plurality of interval setting enclose fender piece 11 and partial water tank lateral wall and approximately enclose into an annular structure, and floating subassembly 2 is located annular structure to realize limit structure 1 to the spacing of floating subassembly 2 and enclose the fender. At least one enclosure 11 can also be connected with part of the side wall of the water tank, and the side wall 101 of the water tank 100 plays a role in supporting and fixing the enclosure 11, so that the stability of the limit structure 1 is improved. When the limit structure 1 is disposed at the middle position of the water tank 100, only the plurality of enclosing members 11 can be disposed around the floating assembly 2, and the limit structure is not formed by the side wall of the water tank.

In one embodiment, as shown in fig. 2, a part of the side wall of the water tank is recessed corresponding to the floating assembly 2 in a direction away from the floating assembly 2 to form a recess 13, and the recess 13 and the plurality of enclosing members 11 form the limit structure 1.

The concave part 13 plays a role of partially accommodating the floating assembly 2 and also plays a role of limiting the floating assembly 2. The concave part 13 and the plurality of enclosing members 11 form the limit structure 1, which is equivalent to using the side wall 101 of the partial water tank 100 as a limit part, so that the original production material of the partial limit structure 1 is saved, and the production cost is saved.

It can be understood that the external shape of the water tank 100 is approximately in a circular arc structure, so that the situation that the corner structure scratches a user is avoided, when the external shape of the floating assembly 2 is in a cylindrical structure, the floating assembly 2 can be directly limited by utilizing the partial circular arc structure of the side wall 101 of the water tank 100, the local materials are obtained, and the production cost is lower.

In one embodiment, as shown in fig. 2-3, a guiding cavity 142 is formed in the limiting structure 1, the floating assembly 2 is arranged in the guiding cavity 142, a water inlet 12 is arranged between two adjacent enclosing members 11 or between the enclosing members 11 and part of the side wall of the water tank, and the guiding cavity 142 is communicated with the inner cavity of the water tank 100 through the water inlet 12.

It will be appreciated that if the spacing structure 1 is a closed structure, the floatation assembly 2 merely characterizes the liquid level within the spacing structure 1, not the liquid level of the tank 100. For the limit structure 1 of the split structure, two adjacent enclosure members 11 are arranged at intervals and are not in contact with each other, a gap exists between the two adjacent enclosure members 11, the gap can be used as the water inlet 12, the guide cavity 142 is communicated with the inner cavity of the water tank 100 through the water inlet 12, so that cleaning liquid in the water tank 100 enters the guide cavity 142 through the water inlet 12, namely, the limit structure 1 is not of a closed structure, and the liquid level detected by the floating assembly 2 is not only the liquid level in the guide cavity 142 but also is equal to the liquid level of the water tank 100.

It will be appreciated that in some other embodiments, the limit structure 1 may be a monolithic structure, and the specific form of the limit structure 1 is not limited in this embodiment, and may be adjusted according to actual production situations. If the limit structure 1 is of an integral structure, since the bottom of the limit structure 1 is the contact part between the limit structure 1 and the water tank 100, the water inlet 12 can be formed at the bottom of the limit structure 1, and the cleaning liquid in the water tank 100 can flow into the guide cavity 142 of the limit structure 1 through the water inlet 12, and at this time, the liquid level in the guide cavity 142 is the same as the liquid level in the water tank 100.

In one embodiment, as shown in fig. 3-4, the reinforcing structure 3 includes at least one reinforcing rib 31, that is, a plurality of reinforcing ribs 31 are disposed on the limiting structure 1, and serve to strengthen the structural strength around the limiting structure 1.

In one embodiment, the number of the provided enclosing pieces 11 is two, the two enclosing pieces 11 are respectively arranged at two sides of the concave part 13, the structures of the two enclosing pieces 11 can be the same or different, and the arc lengths of the two enclosing pieces 11 relative to the center of the floating assembly 2 can be the same or different. The number of the enclosure members 11 is not limited in this embodiment, and may be adjusted according to actual production conditions.

In one embodiment, enclosure 11 includes a first enclosure 111 and a second enclosure 112, first enclosure 111 being connected to side wall 101 of water tank 100, second enclosure 112 being spaced from side wall 101 of water tank 100.

The first enclosure 111 is connected to the side wall 101 of the water tank 100, and at this time, the bottom of the first enclosure 111 and the side portion close to the side wall 101 of the water tank 100 are connected to the water tank 100, so that the fixing effect of the first enclosure 111 is improved. Since the second enclosure 112 is spaced apart from the side wall 101 of the water tank 100, only the bottom of the second enclosure 112 is connected to the water tank 100. At this time, the first side of the first enclosure 111 is connected to the side wall 101 of the water tank 100, the water inlet 12 is formed between the second side of the first enclosure 111 and the second enclosure 112, the water inlet 12 is formed between the side of the second enclosure 112 away from the first enclosure 111 and the side wall 101 of the water tank 100, and the guide cavity 142 of the limit structure 1 is communicated with the water tank 100 by using the two water inlets 12, so that the liquid level in the inner cavity of the water tank 100 and the liquid level in the guide cavity 142 are kept consistent.

In one embodiment, as shown in fig. 3-4, the number of reinforcing ribs 31 corresponding to the first enclosure 111 is smaller than the number of reinforcing ribs 31 corresponding to the second enclosure 112.

It will be appreciated that, since the first enclosure 111 is connected to the side wall 101 of the water tank 100 and the second enclosure 112 is not connected to the side wall 101 of the water tank 100, the connection strength between the second enclosure 112 and the water tank 100 is smaller than that between the first enclosure 111 and the water tank 100, and the connection strength between the second enclosure 112 and the water tank 100 can be reinforced in such a manner that the number of the reinforcing ribs 31 corresponding to the second enclosure 112 is set to be greater than that of the reinforcing ribs 31 corresponding to the first enclosure 111, so that the first enclosure 111 and the second enclosure 112 have similar upright states with respect to the water tank 100, to improve the position stability of the first enclosure 111 and the second enclosure 112, and to reduce the jamming of the floating assembly 2 caused by the inclination of the limiting structure 1.

In one embodiment, as shown in fig. 3-4, a plurality of ribs 31 are arranged in parallel spaced apart or interdigitated relation.

Wherein, a plurality of strengthening ribs 31 can parallel interval setting, and the aesthetic property is good, and the regularity is high, makes the liquid level detection structure occupation space of whole cleaning apparatus water tank little, is convenient for the arrangement of other spare part in the water tank 100. The plurality of reinforcing ribs 31 may be disposed to cross each other to form a reinforcing rib net for resisting impact forces in different directions.

It can be understood that the plurality of reinforcing ribs 31 may be two or one, and the two reinforcing ribs 31 of each group are opposite to each other and are bent, so that the bending directions of the two reinforcing ribs 31 are opposite to each other to perform the function of compensating for each other.

In one embodiment, the limiting structure 1, the reinforcing structure 3 and the water tank 100 are integrally formed. And an integrated structure is adopted, so that the links of part assembly are reduced, and the production cost is reduced.

In one embodiment, as shown in fig. 3-4, the side of the limit structure 1 facing the floating assembly 2 is provided with a guiding structure 14, the guiding structure 14 being used for guiding the floating assembly 2.

A guiding structure 14 is arranged on one side of the limiting structure 1, facing the floating assembly 2, the guiding structure 14 plays a role in guiding and positioning the floating assembly 2, and under the action of the guiding structure 14, the floating assembly 2 is floatably arranged in a guiding cavity 142 of the limiting structure 1 and can move up and down along a first direction.

Specifically, the guide structure 14 includes a plurality of jaws 141, a guide chamber 142 for defining the float assembly 2 is formed between the jaws 141, and the respective jaws 141 are disposed parallel to each other and extend in a first direction to ensure linear movement of the float assembly 2 in the guide chamber 142 in the first direction. The clamping claws 141 are uniformly arranged on the circumference at equal intervals, so that the clamping claws 141 can uniformly surround the outer side surface of the floating assembly 2, the balance of the clamping claws 141 and the side surface stress of the floating assembly 2 is improved, and the conditions of clamping and tilting of the floating assembly 2 are reduced. The jack catch 141 can also reduce the area of contact between the floating assembly 2 and the limit structure 1, so that the surface contact between the floating assembly 2 and the limit structure 1 is changed into the line contact between the floating assembly 2 and the jack catch 141, the contact area is furthest reduced, the sliding resistance is reduced, the probability of clamping stagnation of the floating assembly 2 is reduced, and the accuracy of liquid level detection is improved while the guiding effect is realized.

The number of the claws 141 is at least three, and is not particularly limited, and may be determined according to the shape of the floating unit 2. According to the principle that three points define a plane, it is ensured that the floating assembly 2 does not disengage from the spacing structure 1. If the floating unit 2 has a cylindrical structure, three claws 141 are used to limit the linear movement of the floating unit 2 in the first direction, and four claws 141 may be used to obtain a more stable effect.

In one embodiment, the sensing element 4 may be disposed at a position corresponding to the guiding cavity 142 of the limit structure 1, so as to ensure that the sensing signal obtained by the sensing element 4 reflects the real liquid level information.

It should be noted that the kind of the sensing member 4 provided in the present embodiment is not limited, and the sensing signal may be derived from a magnetic field signal, and specifically, the sensing member 4 provided in the present embodiment employs a hall sensor, which may be disposed at the top of the water tank 100 and located directly above the guide chamber 142.

As shown in fig. 5, the floating assembly 2 comprises a floating housing 21 and a permanent magnet 22, wherein the floating housing 21 can float along with the liquid level, the permanent magnet 22 is arranged in the floating housing 21, the floating housing 21 plays a role of protecting the permanent magnet 22, the permanent magnet 22 is a substance with a constant magnetic field, and the hall sensor is an element with an output level in linear relation with an external magnetic field in a certain range.

When the liquid level in the water tank 100 drops, the floating shell 21 drops along with the liquid level, the permanent magnet 22 fixed in the floating shell 21 is gradually far away from the hall sensor, the magnetic field intensity is continuously weakened, and the electric signal generated by the hall sensor is also continuously weakened. If the electric signal generated by the hall sensor reaches a minimum limit value, meaning that the permanent magnet 22 is almost near the bottom of the water tank 100, it is determined that the water tank 100 is in a state of lack of cleaning liquid, and it is necessary to supply the cleaning liquid to the water tank 100 in time.

When the floating assembly 2 floats and rises along with the rise of the liquid level in the water tank 100, the permanent magnet 22 gradually approaches the hall sensor, so that the magnetic field intensity is continuously enhanced, and the electric signal generated by the hall sensor is also continuously enhanced. If the electric signal generated by the hall sensor reaches the maximum limit value, which means that the permanent magnet 22 is almost near the top of the water tank 100, it is determined that the inside of the water tank 100 is in a state of being full of the cleaning liquid, and at this time, it is not necessary to supply the cleaning liquid to the water tank 100.

It will be appreciated that if a hall sensor is provided below the permanent magnet 22, the only difference is that when the electric signal generated by the hall sensor is enhanced, it means that the liquid level of the water tank 100 is lowered; when the electric signal generated by the hall sensor decreases, this means that the liquid level of the water tank 100 increases, and the principle is similar, so that detailed description thereof will be omitted.

In one embodiment, the liquid level detection structure of the cleaning equipment water tank further comprises a control board, wherein the control board is electrically connected with the Hall sensor, and corresponding liquid level values are obtained according to the change of the strength of the electric signal, so that the detection of liquid level quantification is realized. It should be understood that the hall sensor scheme adopted in this embodiment is not limited to the present utility model, and the manner of using other types of signal sensing elements such as light waves, sound waves, etc. by those skilled in the art is within the scope of the present utility model.

The present embodiment also provides a cleaning apparatus, which includes the water tank 100 and the liquid level detection structure of the cleaning apparatus water tank described above, where the liquid level detection structure of the cleaning apparatus water tank is disposed in the water tank 100, for detecting the liquid level of the water tank 100. The cleaning device may be a cleaning device such as a sweeping robot or a mopping machine, or may be other types of cleaning devices, such as a scrubber.

The cleaning device that this embodiment provided, the liquid level information of usable cleaning device water tank's liquid level detection structure detection water tank 100, more reasonable execution cleans and drags the ground action, makes cleaning device people more intelligent, promotes user experience.

In one embodiment, the cleaning device further comprises a display module and a reminding module, wherein the display module and the reminding module are respectively and electrically connected with the control panel. The display module is used for displaying water quantity information, the reminding module is used for sending prompt information to a user, the control panel is used for receiving sensing signals sent by the sensing piece 4, calculating corresponding water level information according to the strength change of the sensing signals, and sending the water level information to the display module for the user to check.

When it is detected that the water level is relatively low, the cleaning action can be intelligently performed, such as estimating the remaining cleaning time from the remaining water amount and shortening the cleaning stroke, or controlling the cleaning device to stop cleaning, or controlling the cleaning device to return to the cleaning base station for water replenishment, etc. Meanwhile, the reminding module is controlled to send reminding information to the user.

It will be appreciated that the reminder module may also include a voice means for emitting a reminder voice to remind the user of a change in fluid level, such as emitting a "fluid level decrease, please add" or similar voice prompt.

Under the interaction of the control board, the sensing piece 4 and the floating assembly 2, the cleaning equipment can quantitatively detect the liquid level of the water tank 100, intelligently plan the cleaning and mopping paths according to the residual water quantity, and promote the cleaning and mopping effect. Meanwhile, the reminding module can remind a user to add water in time, so that the condition that the cleaning equipment idles due to no cleaning liquid is avoided, and the service life of the cleaning equipment is prolonged.

It should be noted here that the cleaning device structure shown in the drawings and described in the present specification is only one example employing the principles of the present utility model. It will be clearly understood by those of ordinary skill in the art that the principles of the present utility model are not limited to any details or any components of the devices shown in the drawings or described in the specification.

It should be understood that the utility model is not limited in its application to the details of construction and the arrangement of components set forth in the specification. The utility model is capable of other embodiments and of being practiced and carried out in various ways. The foregoing variations and modifications are intended to fall within the scope of the present utility model. It should be understood that the utility model disclosed and defined in this specification extends to all alternative combinations of two or more of the individual features mentioned or evident from the text and/or drawings. All of these different combinations constitute various alternative aspects of the present utility model. The embodiments described in this specification illustrate the best mode known for carrying out the utility model and will enable those skilled in the art to make and use the utility model.

Claims (12)

1. A liquid level detection structure of a cleaning device water tank, comprising:

the limiting structure (1) is arranged in the water tank (100);

-a floatation assembly (2) arranged within the limit structure (1), the floatation assembly (2) being configured to move with a change of liquid level within the water tank (100), the limit structure (1) being used for limiting the floatation assembly (2);

-a sensing member (4), the sensing member (4) being configured to generate a sensing signal in response to a movement of the floatation assembly (2);

wherein, limit structure (1) keep away from one side of floating subassembly (2) is provided with additional strengthening (3).

2. A liquid level detection structure of a cleaning device tank according to claim 1, characterized in that the limit structure (1) comprises a plurality of enclosing members (11), a plurality of enclosing members (11) being provided around the floating assembly (2) for limiting thereof, at least one of the enclosing members (11) being provided with the reinforcing structure (3).

3. A liquid level detection structure of a cleaning device tank according to claim 2, characterized in that the limit structure (1) further comprises a part of the tank side wall, which part of the tank side wall and the plurality of the enclosure members (11) are provided around the floating assembly (2) to limit it.

4. A liquid level detection structure of a cleaning device tank according to claim 3, characterized in that a water inlet (12) is arranged between two adjacent enclosing members (11) or between the enclosing members (11) and the side wall of the partial tank, a guiding cavity (142) is formed in the limiting structure (1), the floating assembly (2) is arranged in the guiding cavity (142), and the guiding cavity (142) is communicated with the inner cavity of the tank (100) through the water inlet (12).

5. A liquid level detection structure of a cleaning device tank according to claim 3, characterized in that the partial tank side wall is formed with a recess (13), the recess (13) and a plurality of the enclosure members (11) forming the limit structure (1).

6. A liquid level detection structure of a tank of a cleaning device according to claim 3, characterized in that the reinforcement structure (3) comprises at least one reinforcement rib (31).

7. A liquid level detection structure of a cleaning device tank according to claim 6, characterized in that the enclosure (11) comprises:

a first enclosure (111) connected to a side wall (101) of the tank (100);

a second enclosure (112) spaced from the side wall (101) of the tank (100);

the number of the reinforcing ribs (31) which are correspondingly arranged on the first enclosing member (111) is smaller than the number of the reinforcing ribs (31) which are correspondingly arranged on the second enclosing member (112).

8. The liquid level detecting structure of a tank for a cleaning apparatus according to claim 6, wherein the reinforcing ribs (31) are arranged in parallel at intervals or are arranged to intersect each other.

9. A liquid level detection structure of a tank of a cleaning device according to any one of claims 1-8, characterized in that the reinforcement structure (3) is connected to the bottom surface of the tank (100).

10. The liquid level detection structure of a cleaning apparatus tank according to any one of claims 1 to 8, wherein the limit structure (1), the reinforcement structure (3) and the tank (100) are an integrally formed structure.

11. A liquid level detection structure of a cleaning device tank according to any one of claims 1-8, characterized in that the side of the limit structure (1) facing the floatation assembly (2) is provided with a guiding structure (14), which guiding structure (14) is used for guiding the floatation assembly (2).

12. A cleaning device characterized by comprising a water tank (100) and a liquid level detection structure of the cleaning device water tank according to any one of claims 1-11, said liquid level detection structure of the cleaning device water tank being arranged in said water tank (100) for detecting the liquid level of said water tank (100).

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