Floor brush assembly and cleaning appliance

Abstract

The present application proposes a floor brush assembly (100) for a cleaning appliance, comprising: - a floor brush base (110); - a host connector (120) hinged to the floor brush base (110), the host connector (120) being movable relative to the floor brush base (110) between a non-lying posture and a lying posture; - a contact switch (130) arranged on one of the floor brush base (110) and the host connector (120), the contact switch (130) being used to, when triggered, change an operating state of a negative pressure device of the cleaning appliance; and - a trigger mechanism (140) arranged on one of the host connector (120) and the floor brush base (110), the trigger mechanism (140) having a trigger member (141), wherein the trigger member (141) is movable relative to the contact switch (130) under the drive or push of the host connector (120), and when the host connector (120) moves relative to the floor brush base (110) to the lying posture, the trigger member (141) triggers the contact switch (130). The present application also proposes a cleaning appliance (10) comprising the floor brush assembly.

Description

Technical Filed

[0001] The present application relates to the technical field of household appliances, and in particular to a floor brush assembly and a cleaning appliance.Background

[0002] As technology advances and living standards improve, household cleaning appliances such as vacuums and floor washers are becoming increasingly popular, with their functionalities expanding. Take floor washers as an example. In addition to a vacuuming function, the existing floor washers also have a mopping function, and can perform dry mopping or wet mopping depending on different application scenarios.

[0003] In the related art, a floor washer comprises a host and a floor brush assembly rotatably connected to the host. The host can rotate relative to the floor brush assembly between a lying posture and an upright posture. A negative pressure device and a wastewater tank are provided inside the host. The floor brush assembly is used to wet mop a surface to be cleaned (such as a floor), and the negative pressure device is used to provide a suction force to draw the wastewater generated by the floor brush assembly during the cleaning process into the wastewater tank.

[0004] However, when the host lies flat relative to the floor brush assembly, wastewater in the wastewater tank is likely to enter the negative pressure device, thereby affecting the performance of the negative pressure device.Summary of the Invention

[0005] In view of the above problem, embodiments of the present application provide a floor brush assembly and a cleaning appliance that prevent wastewater in a wastewater tank from entering a negative pressure device when a host is in a lying posture, thereby ensuring the performance of the negative pressure device, with a simple and reliable structure in low cost.

[0006] To achieve the above objective, embodiments of the present application provide the following technical solutions.

[0007] A first aspect of the embodiments of the present application provides a floor brush assembly for a cleaning appliance, the floor brush assembly comprising: a floor brush base; a host connector hinged to the floor brush base, the host connector being movable relative to the floor brush base between a non-lying posture and a lying posture; a contact switch arranged on one of the floor brush base and the host connector, the contact switch being used to, when triggered, change an operating state of a negative pressure device of the cleaning appliance; and a trigger mechanism arranged on one of the host connector and the floor brush base, the trigger mechanism having a trigger member, wherein the trigger member is movable relative to the contact switch under the drive or push of the host connector, and when the host connector moves relative to the floor brush base to the lying posture, the trigger member triggers the contact switch.

[0008] In the floor brush assembly provided by the embodiment of the present application, by providing the contact switch on one of the floor brush base and the host connector and providing the trigger mechanism on one of the host connector and the floor brush base, and as the trigger mechanism has a trigger member that moves relative to the contact switch under the drive or push of the host connector, the trigger member can trigger the contact switch when the host connector moves relative to the floor brush base to the lying posture, so that the contact switch can change the operating state of the negative pressure device. In this way, the trigger member can precisely trigger the contact switch, which enables the contact switch to precisely control a suction force of the negative pressure device, so as to prevent water from entering the negative pressure device, thereby improving the performance of the negative pressure device. In addition, by adopting this control manner, the structure is simple and reliable, and low in cost.

[0009] In some optional modes of realization, when the trigger member triggers the contact switch, the contact switch is configured to cut off the power supply to the negative pressure device or reduce a suction force generated by the negative pressure device.

[0010] With such arrangement, water can be further prevented from entering the negative pressure device.

[0011] In some optional modes of realization, the contact switch is arranged on the host connector, the trigger mechanism is arranged on one of the host connector and the floor brush base, and the host connector drives the contact switch to move synchronously, so that the trigger member moves relative to the contact switch.

[0012] With such arrangement, the trigger mechanism can be flexibly arranged on the host connector or the floor brush base according to actual needs, thereby improving compactness of the overall structure.

[0013] In some optional modes of realization, the trigger mechanism is arranged on the host connector, and the trigger member moves relative to the contact switch further under the push of the floor brush base. With such arrangement, the relative position between the trigger member and the contact switch can be precisely determined, which improves the precision of triggering the contact switch.

[0014] In some optional modes of realization, the trigger mechanism is arranged on the floor brush base, and the host connector drives the contact switch to move synchronously, so that the trigger member moves relative to the contact switch.

[0015] Such arrangement can simplify the structure of the trigger mechanism, is easy to implement, and has a low cost.

[0016] In some optional modes of realization, the contact switch is arranged on the floor brush base, the trigger mechanism is arranged on one of the host connector and the floor brush base, and the trigger member moves relative to the contact switch under the drive or push of the host connector.

[0017] In some optional modes of realization, the trigger mechanism is arranged on the host connector, and the trigger member moves synchronously with the host connector so as to move relative to the contact switch under the drive of the host connector.

[0018] With such arrangement, the structure is simple, easy to implement, and low in cost.

[0019] In some optional modes of realization, the trigger mechanism is arranged on the floor brush base, and the host connector drives the contact switch to move synchronously, so that the trigger member moves relative to the contact switch.

[0020] With such arrangement, wiring and assembly are relatively convenient, thereby reducing the assembly cost.

[0021] In some optional modes of realization, the host connector is provided with a pushing portion at the position corresponding to the trigger member, the pushing portion being configured to push the trigger member.

[0022] With such arrangement, a pushing force applied by the host connector to the trigger member can be precisely transmitted to the trigger member through the pushing portion, so as to improve the reliability of the host connector in pushing the trigger member to move.

[0023] In some optional modes of realization, the pushing portion is a pushing protrusion.

[0024] With such arrangement, when the host connector abuts against the trigger member through the pushing protrusion to push the trigger member to move relative to the contact switch, a pushing force can be applied to the trigger member through the pushing protrusion, so as to improve the reliability of the movement of the trigger member.

[0025] In some optional modes of realization, the trigger mechanism further comprises an elastic member connected between the floor brush base and the trigger member, the elastic member being configured to drive the trigger member to move toward the host connector by its own elastic force.

[0026] With such arrangement, when the host connector rotates to a non-lying posture, the elastic force of the elastic member itself can drive the trigger member to disengage from the contact switch, so that the negative pressure device returns to a normal operating state. The structure is simple, easy to implement, and low in cost.

[0027] In some optional modes of realization, the trigger member is provided with a trigger portion arranged at the side of the trigger member facing the contact switch, the trigger portion being configured to trigger the contact switch.

[0028] Such arrangement can improve the precision of the trigger member in triggering the contact switch, and prevent the trigger member from accidentally triggering the contact switch, thereby improving the user experience.

[0029] In some optional modes of realization, the trigger portion is a trigger protrusion extending toward the side of the contact switch.

[0030] With such arrangement, the structure is simple and easy to implement.

[0031] In some optional modes of realization, an avoidance notch is provided on a wall surface of the side of the trigger member facing away from the host connector and facing the contact switch, the trigger portion being located on the side of the avoidance notch close to the host connector, the avoidance notch being used to avoid the contact switch when the host connector pushes the trigger member to move relative to the contact switch.

[0032] Such arrangement can avoid accidentally triggering the contact switch when the host connector has not rotated to the lying posture, thereby improving the precision of triggering the contact switch.

[0033] In some optional modes of realization, the floor brush base is provided with an accommodating groove which opens toward the host connector, a first position limiting structure being provided on a bottom wall of the accommodating groove, an end of the elastic member being connected to the first position limiting structure; and / or, the trigger member is provided with a second position limiting structure at the end facing the elastic member, the elastic member being connected to the second position limiting structure. The first position limiting structure and / or the second position limiting structure are configured to limit the relative position between the elastic member and the trigger member.

[0034] Such arrangement can improve the precision of the relative position between the elastic member and the trigger member, thereby improving the precision of the movement path of the trigger member and thus improving the precision of the trigger member in triggering the contact switch.

[0035] In some optional modes of realization, the first position limiting structure and / or the second position limiting structure is one of a position limiting groove and a position limiting protrusion.

[0036] With such arrangement, the structure is simple, easy to process, and low in cost.

[0037] In some optional modes of realization, the trigger mechanism further comprises a position limiting cover which covers a groove opening of the accommodating groove and is connected to the floor brush base, the position limiting cover being provided with a guiding hole that penetrates through the surfaces on the two opposite sides of the position limiting cover, at least a portion of the trigger member is arranged in and passes through the guiding hole.

[0038] With such arrangement, the movement path of the trigger member can be guided, thereby improving the precision of the path of the trigger member, thus improving the precision of the trigger member triggering the contact switch.

[0039] In some optional modes of realization, the trigger member comprises a sliding portion and an abutting portion connected in sequence, the sliding portion being located in the accommodating groove, the elastic member being connected between the sliding portion and the first position limiting structure, the abutting portion being arranged in and passing through the guiding hole, the host connector pushing the abutting portion to cause the sliding portion to move relative to the contact switch.

[0040] With such arrangement, the sliding portion is limited in position in the accommodating groove, and the guiding hole guides the movement of the abutting portion, so that the position precision of the trigger member moving relative to the contact switch can be improved, thereby improving the precision and reliability of the trigger member triggering the contact switch.

[0041] A second aspect of the embodiments of the present application provides a cleaning appliance, comprising a host and a floor brush assembly provided by an above-mentioned embodiment, the host being connected to the host connector of the floor brush assembly, the host comprising a negative pressure device and a wastewater tank, the contact switch of the floor brush assembly being electrically connected to the negative pressure device to control an operating state of the negative pressure device, the negative pressure device being connected to the wastewater tank and configured to provide a suction force to draw wastewater generated during cleaning into the wastewater tank.

[0042] The cleaning appliance provided by the embodiment of the present application has the same advantageous effects as the floor brush assembly provided in the above embodiment, which will not be repeated here.

[0043] In addition to the technical problems solved by the embodiments of the present application described above, the technical features constituting the technical solutions, and the advantageous effects brought about by the technical features of these technical solutions, the other technical problems that can be solved by the floor brush assembly and cleaning appliance provided by the embodiments of the present application, the other technical features included in the technical solutions, and the advantageous effects brought about by these technical features will be further described in detail in the description of embodiments.Brief Description of the Drawings

[0044] In order to more clearly describe the technical solutions of the embodiments of the present application or in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below. Obviously, the drawings described below are merely some of the embodiments of the present application. For those skilled in the art, other drawings can also be obtained based on these drawings without creative work. Figure 1 is a structure schematic view of a cleaning appliance provided by an embodiment of the present application; Figure 2 is a structure schematic view of a floor brush assembly provided by an embodiment of the present application; Figure 3 is an exploded schematic view of a floor brush assembly provided by an embodiment of the present application; Figure 4 is an exploded schematic view from another perspective of a floor brush assembly provided by an embodiment of the present application; Figure 5 is a schematic view of the internal structure of a floor brush assembly in a first posture provided by an embodiment of the present application; Figure 6 is a schematic view from another perspective of the inner structure of a floor brush assembly in a first posture provided by an embodiment of the present application; Figure 7 is a partial enlarged schematic view of part A in Figure 6; Figure 8 is a schematic view of the inner structure of a floor brush assembly in a second posture provided by an embodiment of the present application; Figure 9 is a schematic view from another perspective of the inner structure of a floor brush assembly in a second posture provided by an embodiment of the present application; Figure 10 is a partial enlarged schematic view of part B in Figure 9; Figure 11 is a structure schematic view of a trigger member in a floor brush assembly provided by an embodiment of the present application. Description of reference signs:

[0045] 10-cleaning appliance; 100-floor brush assembly; 110-floor brush base; 111-accommodating groove; 112-first position limiting structure; 120-host connector; 121-pushing portion; 130-contact switch; 131-elastic contact; 140-trigger mechanism; 141-trigger member; 1411-trigger portion; 1412-avoidance notch; 1413-sliding portion; 1414-abutting portion; 142-elastic member; 1421-second position limiting structure; 143-position limiting cover; 1431-guiding hole; 200-host; 210-wastewater tank; 220-negative pressure device. Detailed Description of Embodiments

[0046] Household cleaning appliances such as vacuums and floor washers are becoming increasingly popular, with their functionalities expanding. Take floor washers as an example. In addition to a vacuuming function, the existing floor washers also have a mopping function, and can perform dry mopping or wet mopping depending on different application scenarios. For example, a floor washer comprises a host and a floor brush assembly rotatably connected to the host. The host can rotate relative to the floor brush assembly between a lying posture and an upright posture. A negative pressure device and a wastewater tank are provided inside the host. The floor brush assembly is used to wet mop a surface to be cleaned (such as a floor), and the negative pressure device is used to provide a suction force to draw the wastewater generated by the floor brush assembly during the cleaning process into the wastewater tank. However, when the host lies flat relative to the floor brush assembly, wastewater in the wastewater tank is likely to enter the negative pressure device, thereby affecting the performance of the negative pressure device.

[0047] In order to solve the above problem, embodiments of the present application provide a floor brush assembly and a cleaning appliance. By providing the contact switch on one of the floor brush base and the host connector of the floor brush assembly, and providing the trigger mechanism on one of the host connector and the floor brush base, and as the trigger mechanism has a trigger member that moves relative to the contact switch under the drive or push of the host connector, the trigger member can trigger the contact switch when the host connector moves relative to the floor brush base to the lying posture, so that the contact switch can change the operating state of the negative pressure device. In this way, the trigger member can precisely trigger the contact switch, which enables the contact switch to precisely control a suction force of the negative pressure device, so as to prevent water from entering the negative pressure device, thereby improving the performance of the negative pressure device. In addition, the structure is simple and reliable, and the cost is low.

[0048] In order to make the above-mentioned objectives, features and advantages of embodiments of the present application more apparent and understandable, the technical solutions in embodiments of the present application will be described clearly and comprehensively below in conjunction with the accompanying drawings in embodiments of the present application. Obviously, the described embodiments are only a part, not all, of the embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without inventive efforts shall fall within the protection scope of the present application.

[0049] An embodiment of the present application provides a floor brush assembly, which is applied to a cleaning appliance. The cleaning appliance can be a vacuum cleaner with a brushroll, or an automatic cleaning robot for cleaning, for example, a floor. The embodiments of the present application do not specifically limit the type of the cleaning appliance.

[0050] With reference to Figure 1, the cleaning appliance 10 comprises a floor brush assembly 100 and a host 200. The host 200 is connected to the floor brush assembly 100. The floor brush assembly 100 for example comprises a floor brush base 110 and a brushroll connected to the floor brush base 110. One of the host 200 and the floor brush assembly 100 is provided with a clean water tank, which is used to store a cleaning liquid. For example, the cleaning liquid can be water or a mixed liquid of detergent and water. The host 200 is further provided with a wastewater tank 210 and a negative pressure device 220. A wastewater pipeline connecting the wastewater tank 210 and the brushroll is provided between the wastewater tank 210 and the brushroll. The negative pressure device 220 is used to provide a suction force. In this way, when the cleaning appliance cleans a floor, as the cleaning appliance moves in the forward direction, the brushroll can rotate relative to the floor, and the clean water tank discharges the cleaning liquid. The cleaning liquid can be guided to flow to the brushroll through the pipeline, and is used for cleaning and mopping the floor through the rotation of the brushroll, to achieve the objective of cleaning the floor. In addition, the suction force provided by the negative pressure device 220 draws the wastewater generated during the cleaning process into the wastewater tank 210 through the wastewater pipeline.

[0051] By way of example, the negative pressure device 220 is arranged on one side of the wastewater tank 210, which is remote from the floor brush assembly 100, and the negative pressure device 220 comprises a motor and a negative pressure fan connected to the motor.

[0052] It can be understood that when the host 200 is in a lying posture relative to the floor brush assembly 100, the water surface of the wastewater in the wastewater pipe will be close to the vent of the communication between the negative pressure device 220 and the wastewater tank 210. At this time, if the suction force generated by the negative pressure fan is large, it could cause the wastewater in the wastewater tank 210 to enter the negative pressure device 220 through the vent, resulting in malfunction of the electronic components, such as the motor, in the negative pressure device 220. Therefore, it is necessary to reduce the suction force of the negative pressure fan or turn off the negative pressure fan to prevent the wastewater in the wastewater tank 210 from entering the interior of the negative pressure device 220.

[0053] In the embodiments of the present application, the floor brush assembly 100 in the cleaning appliance are improved to prevent wastewater from entering the interior of the negative pressure device 220.

[0054] The structure and operating principle of the floor brush assembly 100 in the cleaning appliance will be described below in detail in conjunction with the accompanying drawings.

[0055] With reference to Figures 2 to 11, an embodiment of the present application provides a floor brush assembly 100. The floor brush assembly 100 comprises a floor brush base 110, a host connector 120, and a contact switch 130. The host connector 120 is hinged to the floor brush base 110, and the host connector 120 is used to connect the host 200 in the cleaning appliance. The relative posture between the host connector 120 and the floor brush base 110 can be considered equivalent to the relative posture between the host 200 and the floor brush base 110. In this way, when the host connector 120 rotates relative to the floor brush base 110 around a fixed rotation axis, it can drive the host 200 to rotate relative to the floor brush base 110 between a lying posture and an upright posture, wherein the contact switch 130 can be provided at one of the floor brush base 110 and the host connector 120, and a trigger mechanism 140 is provided at one of the host connector 120 and the floor brush base 110. The trigger mechanism 140 has a trigger member 141 that moves relative to the contact switch 130 under the drive or push of the host connector 120. When the host connector 120 moves relative to the floor brush base 110 to a lying posture, the trigger member 141 triggers the contact switch 130. That is, the contact switch 130 is arranged at the position corresponding to the trigger member 141 when the host connector 120 is in the lying posture, so as to trigger the contact switch 130 by the trigger member 141 to change the operating state of the negative pressure device 220 in the cleaning appliance. For example, the suction force of the negative pressure device 220 is reduced through the contact switch 130, so as to prevent wastewater in the wastewater tank 210 from entering the interior of the negative pressure device 220.

[0056] In some embodiments, the contact switch 130 is provided on the host connector 120, and the trigger mechanism 140 is provided on one of the host connector 120 and the floor brush base 110. The host connector 120 carries the contact switch 130 to move synchronously, so that the trigger member 141 moves relative to the contact switch 130.

[0057] In an example, the contact switch 130 and the trigger mechanism 140 are respectively arranged at different positions on the host connector 120, wherein the trigger member 141 is movably arranged on a side of the host connector 120 facing the floor brush base 110, and the contact switch 130 is fixedly arranged on the host connector 120. For example, when the host connector 120 rotates from the upright posture toward the lying posture so that the trigger member 141 abuts against the floor brush base 110, as the host connector 120 continues to rotate toward the lying posture, the floor brush base 110 pushes the trigger member 141 to move relative to the contact switch 130; when the host connector 120 rotates to the lying posture, the trigger member 141 triggers the contact switch 130 to change the operating state of the negative pressure device 220 in the cleaning appliance, thereby preventing wastewater in the wastewater tank 210 from entering the interior of the negative pressure device 220.

[0058] In another example, the contact switch 130 is arranged on the host connector 120, and the trigger mechanism is arranged on the floor brush base 110. The trigger member 141 in the trigger mechanism 140 is, for example, fixedly arranged on the floor brush base 110. The trigger member 141 is, for example, a stud-like structure, a plate-like structure, etc. For example, the trigger member 141 can be formed into an integral structure with the floor brush base 110 through processes such as injection molding or casting, thereby reducing the assembly process. When the host connector 120 drives the contact switch 130 to move synchronously toward the floor brush base 110, the trigger member 141 and the contact switch 130 move relative to each other, so that when the host connector 120 rotates to the lying posture, the trigger member 141 triggers the contact switch 130 to change the operating state of the negative pressure device 220 in the cleaning appliance, thereby preventing wastewater in the wastewater tank 210 from entering the interior of the negative pressure device 220.

[0059] In other embodiments, the contact switch 130 is arranged on the floor brush base 110, and the trigger mechanism 140 is arranged on one of the host connector 120 and the floor brush base 110. The trigger member 141 moves relative to the contact switch 130 under the drive or push of the host connector 120.

[0060] In an example, the contact switch 130 is arranged on the floor brush base 110, the trigger mechanism 140 is arranged on the host connector 120, and the trigger member 141 moves synchronously with the host connector 120, so as to move relative to the contact switch 130 under the drive of the host connector 120. For example, the trigger member 141 is a stud-like, plate-like or cylinder-like structure etc., as long as the trigger member 141 can trigger the contact switch 130 when the host connector 120 moves relative to the floor brush base 110 to the lying posture. This results in a simple structure, a straightforward and reliable triggering method, easy implementation, and low cost.

[0061] When the trigger member 141 is arranged on the host connector 120, the trigger member 141 can be formed into an integral structure with the host connector 120 through integral forming processes such as casting or injection-molding, thereby reducing assembly process and lowering assembly cost.

[0062] In addition, an avoidance space can be provided at a position on the floor brush base 110 corresponding to the trigger member 141, to prevent interference between the trigger member 141 and the floor brush base 110 when the trigger member 141 moves relative to the contact switch 130 under the drive of the host connector 120, thereby improving the user experience.

[0063] In another example, the trigger mechanism 140 and the contact switch 130 are respectively arranged at different positions of the floor brush base 110. For example, the trigger member 141 is movably arranged on the floor brush base 110, and the contact switch 130 is fixedly arranged on the floor brush base 110. When the host connector 120 rotates from the upright posture toward the lying posture, the host connector 120 pushes the trigger member 141 to move relative to the contact switch 130. When the host connector 120 rotates to the lying posture, the trigger member 141 triggers the contact switch 130 to change the operating state of the negative pressure device 220 in the cleaning appliance, thereby preventing wastewater in the wastewater tank 210 from entering the interior of the negative pressure device 220.

[0064] In addition, it can be understood that when the cleaning appliance is in normal use, the host 200 rotates to an upright posture, and the user can push the cleaning appliance forward to clean a floor by holding a handle connected to the host 200. When cleaning a low area (such as the floor under furniture such as tables, sofas, coffee tables, bedside tables, or beds) is required, the host 200 usually needs to rotate to the lying posture so that the cleaning appliance can access the low area for cleaning.

[0065] In some embodiments, the contact switch 130 can adjust the suction force level of the negative pressure fan in the negative pressure device 220. For example, different suction forces of the negative pressure fan correspond to different levels, and the suction force output varies depending on the level selected. For example, when cleaning a low area, that is, when the host connector 120 is in the lying posture, the suction force output at the level selected of the negative pressure device 220 does not cause wastewater to enter the negative pressure device 220. In this way, effective cleaning is ensured while the performance of the negative pressure device 220 can be improved.

[0066] In other embodiments, the contact switch 130 can be a micro switch, with an elastic contact 131 provided on the side of the micro switch facing the trigger member 141. Due to the characteristics of the micro switch, such as small contact spacing, short action stroke, low actuation force and quick on / off switching, in the embodiment of the present application, when the host connector 120 rotates to the lying posture, the micro switch can quickly cut off the power supply to the negative pressure device 220. Since the negative pressure fan will continue to rotate for a period due to inertia after the power is cut off and the rotation speed will gradually decrease until it stops, the suction force will also gradually decrease during this process. Thus, when cleaning a low area which is small, i.e., which requires a short cleaning time, the micro switch can quickly cut off the power supply to the negative pressure device 220 to prevent wastewater from entering the interior of the negative pressure device 220, while the suction force generated by the negative pressure fan due to inertia can briefly meet the cleaning effect.

[0067] It can be seen that in embodiments of the present application, by arranging the contact switch 130 on the floor brush base 110, arranging the trigger mechanism 140 on one of the host connector 120 and the floor brush base 110, and providing the trigger mechanism 140 with the trigger member 141 that moves relative to the contact switch 130 under the drive or push of the host connector 120, so that when the host connector 120 moves to the lying posture relative to the floor brush base 110, the trigger member 141 triggers the contact switch 130 to change the operating state of the negative pressure device 220 in the cleaning appliance. In this way, the trigger member 141 can precisely trigger the contact switch 130, which enables the contact switch 130 to precisely control the operating state of the negative pressure device 220, thereby preventing water from entering the negative pressure device 220 and improving the performance of the negative pressure device 220. In addition, the structure is simple, reliable, low in cost, and highly practical.

[0068] An example will be described below in detail, wherein the trigger mechanism 140 and the contact switch 130 are respectively arranged at different positions of the floor brush base 110, and wherein when the main connector 120 rotates to the lying posture, the trigger member 141 triggers the contact switch 130 to change the operating state of the negative pressure device 220 in the cleaning appliance.

[0069] In some embodiments, with reference to Figures 2 to 10, the contact switch 130 and the trigger mechanism 140 are respectively arranged at different positions of the floor brush base 110, and the trigger member 141 abuts against and is pushed by the host connector 120 to move toward the contact switch 130. For example, the trigger member 141 is movably arranged on the floor brush base 110 and is located directly below the host connector 120. In this way, when the host connector 120 moves relative to the floor brush base 110 and toward the lying posture, the host connector 120 abuts against and pushes the trigger member 141 to move relative to the contact switch 130. When the host connector 120 moves to (reaches) the lying posture, the trigger member 141 precisely triggers the contact switch 130.

[0070] In embodiments of the present application, by arranging the trigger mechanism 140 on the floor brush base 110, the assembly and wiring of the trigger mechanism 140 can be facilitated, thereby reducing the assembly cost.

[0071] In some embodiments, with reference to Figures 2, 5 and 8, the host connector 120 is provided with a pushing portion 121 at the position corresponding to the trigger member 141. When the host connector 120 rotates toward the trigger member 141, the pushing portion 121 is used to push the trigger member 141. In this way, the host connector 120 can apply a trigger force to the trigger member 141 through the pushing portion 121, thereby increasing the pushing force per unit area applied to the trigger member 141 and thus increasing the reliability of pushing the trigger member 141.

[0072] In some embodiments, the pushing portion 121 can be a pushing protrusion. As an example, the surface of the pushing protrusion is for example an arc-shaped protrusion, which can further reduce the unit area on which the pushing force is applied to the trigger member 141, thereby increasing the concentration of the force and improving the reliability of pushing the triggering member 141.

[0073] Alternatively, in other embodiments, the surface of the pushing portion 121 facing the trigger member 141 matches the surface of the trigger member 141 facing the pushing portion 121. In this way, when the pushing portion 121 pushes the trigger member 141, the surface of the pushing portion 121 fits with the surface of the trigger member 141.

[0074] In some embodiments, with reference to Figures 3 to 10, the trigger mechanism 140 further comprises an elastic member 142. The elastic member 142 is connected between the floor brush base 110 and the trigger member 141, and the elastic member 142 is configured to drive the trigger member 141 to move toward the host connector 120 by its own elastic force. For example, when the host connector 120 rotates from the lying posture toward the upright posture, the elastic member 142 can drive the trigger member 141 to disengage from triggering the contact switch 130 by its elastic force, thereby restoring the negative pressure device 220 to its normal operating state and thus improving the cleaning effect.

[0075] In other words, the elastic member 142 can drive the trigger member 141 to move relative to the contact switch 130 by its own elastic force, allowing the contact switch 130 to reset and thereby restoring the negative pressure device 220 to a normal operating state, without the need for manual adjustment or resetting, or any other additional reset structures. The structure is simple, easy to implement, and low in cost.

[0076] The elastic member 142 can for example be a spring, such as a tension spring or a compression spring, etc., which is not limited here.

[0077] In some embodiments, the trigger member 141 is for example a trigger block, a trigger plate, or a trigger stud that can move relative to the contact switch 130, which is not limited here.

[0078] In some embodiments, the trigger member 141 is provided with a trigger portion 1411 arranged on the side of the trigger member 141 facing the contact switch 130. In this way, the precision of the trigger member 141 in triggering the contact switch 130 can be improved, and the trigger member 141 can be prevented from accidentally triggering the contact switch 130, thereby improving the user experience.

[0079] By way of example, the trigger portion 1411 is for example a trigger protrusion that extends toward the side of the contact switch 130. That is, when the host connector 120 pushes the trigger member 141 toward the lying posture and rotates to the lying posture, the trigger protrusion on the trigger member 141 is arranged to be opposite to and abut against the contact switch 130, thereby further improving the precision of triggering.

[0080] The trigger protrusion can be formed into an integral structure with the trigger member 141 by an integral molding method, thereby reducing the assembly process and lowing the assembly cost.

[0081] In order to further improve the precision of the trigger member 141 in triggering the contact switch 130, in an embodiment of the present application, as shown in and with reference to Figures 10 and 11, an avoidance notch 1412 is provided on the wall surface of the side of the trigger member 141 that faces away from the host connector 120 and faces the contact switch 130. The trigger portion 1411 is located on the side of the avoidance notch 1412 that is close to the host connector 120. When the host connector 120 pushes the trigger member 141 to move relative to the contact switch 130, the avoidance notch 1412 is used to avoid the contact switch 130. This design can prevent accidental triggering of the contact switch 130 before the host connector 120 rotates to the lying posture, thereby improving the precision of triggering the contact switch 130.

[0082] The avoidance notch 1412 can be formed by removing part of the material from an outer wall surface of the trigger member 141, for example, removing part of the material from the side of the trigger member 141 facing the contact switch 130, while retaining the material at the position corresponding to the contact switch 130 when the host connector 120 is in the lying posture. In this way, a concave-convex (in relief) structure will be formed on the side of the trigger member 141 facing the contact switch 130, so that the convex part of the trigger member 141 facing the contact switch 130 forms a contact portion. There is no need to add extra material to form the contact portion, making the structure simple, easy to implement, and low in cost.

[0083] The avoidance notch 1412 and the contact portion can be can be integrally formed with the trigger member 141, which reduces the assembly process and lowers the assembly cost.

[0084] In some embodiments, the floor brush base 110 is provided with an accommodating groove 111 which opens toward the side of the host connector 120. The trigger member 141 and the elastic member 142 can be arranged in the accommodating groove 111, and the contact switch 130 can be arranged on the groove wall corresponding to the trigger portion 1411 on the trigger member 141 in the accommodating groove 111. In this way, by accommodating the trigger member 141, the elastic member 142 and the contact switch 130 in the accommodating groove 111, the structure can be more compact, reducing the overall appearance size of the floor brush assembly 100.

[0085] A fixing slot can be provided on the groove wall where the contact switch 130 is mounted, and the contact switch 130 is embedded and fixed in the fixing slot, with the contact point of the contact switch 130 facing the side of the trigger member 141.

[0086] In addition, a first position limiting structure 112 can be provided on the bottom wall of the accommodating groove 111, and an end of the elastic member 142 is connected to the first position limiting structure 112. A second position limiting structure 1421 can be provided at the end of the trigger member 141 facing the elastic member 142. The elastic member 142 is connected to the second position limiting structure 1421. The first position limiting structure 112 and the second position limiting structure 1421 are configured to limit the relative position between the elastic member 142 and the trigger member 141. In this way, the precision of the relative position between the elastic member 142 and the trigger member 141 can be improved, thereby improving the precision of the movement path of the trigger member 141 and thus improving the precision of the trigger member 141 in triggering the contact switch 130.

[0087] In some embodiments, the first position limiting structure 112 and the second position limiting structure 1421 can each be at least one of a position limiting groove or a position limiting protrusion. In this way, the position limiting purpose is achieved while keeping the structure simple, easy to process, and low in cost.

[0088] For example, in Figures 5 to 10, the first position limiting structure 112 is a position limiting protrusion, the second position limiting structure 1421 is a position limiting groove, and the elastic member 142 is a spring. In this way, one end of the elastic member 142 is sleeved onto the position limiting protrusion, and the other end of the elastic member 142 is arranged in the position limiting groove, so that the movement of the elastic member 142 in the horizontal direction is limited through the position limiting protrusion and position limiting groove, and only the movement of the elastic member 142 in the direction of the elastic force is preserved, thereby improving the precision of the reset path of the trigger member 141 driven by the elastic member 142.

[0089] In some embodiments, with reference to Figures 2 to 10, the trigger mechanism 140 further comprises a position limiting cover 143 which covers the groove opening of the accommodating groove 111 and is connected to the floor brush base 110. The position limiting cover 143 is provided with a guiding hole 1431 that penetrates through the surfaces on opposite sides of the position limiting cover 143. At least a portion of the trigger member 141 is arranged in and passes through the guiding hole 1431. Thus, the trigger member 141 can move along the extension direction of the guiding hole 1431 when it moves relative to the contact switch 130, so that the movement path of the trigger member 141 is guided by means of the guiding hole 1431, thereby improving the precision of the path of the trigger member 141, and thus improving the precision of the trigger member 141 in triggering the contact switch 130.

[0090] The position limiting cover 143 can be detachably connected to the floor brush base 110. Exemplarily, the position limiting cover 143 can be detachably connected through threaded fasteners or the like. For example, the position limiting cover 143 is provided with two through holes spaced apart for the passage of the threaded fasteners, and the accommodating groove 111 is provided with two threaded studs, each threaded stud is provided with a threaded hole. After the position limiting cover 143 closes and covers the opening of the accommodating groove 111, the threaded fasteners pass through the through holes and engage with the corresponding threaded holes, thereby fixing the position limiting cover 143.

[0091] In addition, the appearance of the position limiting cover 143 can be consistent with the apparence of the floor brush base 110 in terms of color and other aspects to enhance the overall aesthetics.

[0092] In order to further improve the movement accuracy and triggering precision of the trigger member 141, in an embodiment of the present application, with reference to Figures 7 and 11, the trigger member 141 comprises a sliding portion 1413 and an abutting portion 1414 connected in sequence. The abutting portion 1414 is located above the sliding portion 1413. The trigger portion 1411 is arranged on the sliding portion 1413, and the cross-sectional area of the abutting portion 1414 is smaller than the cross-sectional area of the sliding portion 1413. Thus, the sliding portion 1413 is located in the accommodating groove 111 and connected to the elastic member 142, the position limiting cover 143 can limit the position of the sliding portion 1413, the abutting portion 1414 is arranged into and passes through the guiding hole 1431 so that the guiding holes 1431 can guide the movement of the abutting portion 1414. In this way, when the host connector 120 rotates, the abutting portion 1414 can be pushed by the pushing portion 121 to drive the trigger member 141 to move. Thus, the pushing force per unit area of the host connector 120 pushing the trigger member 141 can be increased, and the precision and reliability of the movement path of the trigger member 141 can be improved, so that the contact switch 130 can be precisely triggered by the trigger member 141, thereby avoiding the problem of accidental triggering and improving the performance of the cleaning appliance.

[0093] By way of example, the sliding portion 1413 is for example a slider, and the abutting portion 1414 is for example a stud-like structure, such as a cylinder, etc., which is not limited here.

[0094] Still with reference to Figure 1, an embodiment of the present application further provides a cleaning appliance 10. The cleaning appliance 10 comprises a floor brush assembly 100 and a host 200. The host 200 is connected to the floor brush assembly 100. The floor brush assembly 100 for example comprises a floor brush base 110 and a brushroll connected to the floor brush base 110. One of the host 200 and the floor brush assembly 100 is provided with a clean water tank used to store a cleaning liquid. Also, a wastewater tank 210 and a negative pressure device 220 are provided inside the host 200. A wastewater pipeline connecting the wastewater tank 210 and the brushroll is provided between the wastewater tank 210 and the brushroll. The negative pressure device 220 is used to provide a suction force. Thus, when the cleaning appliance cleans a floor, as the cleaning appliance moves in a forward direction, the brushroll can rotate relative to the floor, the clean water tank discharges the cleaning liquid. The cleaning liquid can be guided to flow to the brushroll through the pipeline, and is used for cleaning and mopping the floor through the rotation of the brushroll, to achieve the purpose of cleaning the floor. In addition, the suction force provided by the negative pressure device 220 draws the wastewater generated during the cleaning process into the wastewater tank 210 through the wastewater pipeline.

[0095] The structure and principle of the floor brush assembly 100 have been described in detail in the above-mentioned embodiments, and will not be repeated here in detail.

[0096] In the floor brush assembly and cleaning appliance provided by the embodiments of the present application, by providing the contact switch on one of the floor brush base and the host connector of the floor brush assembly, and providing the trigger mechanism on one of the host connector and the floor brush base, and as the trigger mechanism has a trigger member that moves relative to the contact switch under the drive or push of the host connector, the trigger member can trigger the contact switch when the host connector moves relative to the floor brush base to the lying posture, so that the contact switch can change the operating state of the negative pressure device in the cleaning appliance. In this way, the trigger member can precisely trigger the contact switch, which enables the contact switch to change the suction force of the negative pressure device, so as to prevent water from entering the negative pressure device, thereby improving the performance of the negative pressure device and making the structure simple and reliable, and low in cost.

[0097] The various embodiments or modes of realization in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts among the embodiments can be cross-referenced.

[0098] In the description of this specification, references to terms such as "an embodiment," "some embodiments," "exemplary embodiment," "example," "specific example," or "some examples" means that specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. The indicative expressions of the above terms in this specification do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described can be combined in any suitable manner in one or more embodiments or examples.

[0099] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that modifications of the technical solutions described in the embodiments or equivalent replacements of some or all of the technical features therein may still be made. Such modifications or replacements do not cause the essence of the corresponding technical solutions to depart from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A floor brush assembly (100) for a cleaning appliance (10), comprising: - a floor brush base (110); - a host connector (120) hinged to the floor brush base (110), the host connector (120) being movable relative to the floor brush base (110) between a non-lying posture and a lying posture; - a contact switch (130) arranged on one of the floor brush base (110) and the host connector (120), the contact switch (130) being used to, when triggered, change an operating state of a negative pressure device of the cleaning appliance; and - a trigger mechanism (140) arranged on one of the host connector (120) and the floor brush base (110), the trigger mechanism (140) having a trigger member (141), wherein the trigger member (141) is movable relative to the contact switch (130) under the drive or push of the host connector (120), and when the host connector (120) moves relative to the floor brush base (110) to the lying posture, the trigger member (141) triggers the contact switch (130).

2. The floor brush assembly of claim 1, wherein, when the trigger member (141) triggers the contact switch (130), the contact switch (130) is configured to cut off a power supply to the negative pressure device or reduce a suction force generated by the negative pressure device.

3. The floor brush assembly of any one of claims 1 to 2, wherein, the contact switch (130) is arranged on the host connector (120), the trigger mechanism (140) is arranged on one of the host connector (120) and the floor brush base (110), the host connector (120) drives the contact switch (130) to move synchronously, so that the trigger member (141) moves relative to the contact switch (130).

4. The floor brush assembly of claim 3, wherein, the trigger mechanism (140) is arranged on the host connector (120), and the trigger member (141) moves relative to the contact switch (130) further under the push of the floor brush base (110);alternatively, the trigger mechanism (140) is arranged on the floor brush base (110), and the host connector (120) drives the contact switch (130) to move synchronously, so that the trigger member (141) moves relative to the contact switch (130).

5. The floor brush assembly of any one of claims 1 to 2, wherein, the contact switch (130) is arranged on the floor brush base (110), the trigger mechanism (140) is arranged on one of the host connector (120) and the floor brush base (110), the trigger member (141) moves relative to the contact switch (130) under the drive or push of the host connector (120).

6. The floor brush assembly of claim 5, wherein, the trigger mechanism (140) is arranged on the host connector (120), and the trigger member (141) moves synchronously with the host connector (120) so as to move relative to the contact switch (130) under the drive of the host connector (120).

7. The floor brush assembly of claim 5, wherein, the trigger mechanism (140) is arranged on the floor brush base (110), and the trigger member (141) moves relative to the contact switch (130) under the push of the host connector (120).

8. The floor brush assembly of claim 7, wherein, the host connector (120) is provided with a pushing portion (121) at a position corresponding to the trigger member (141), the pushing portion (121) being configured to push the trigger member (141), preferably the pushing portion (121) is a pushing protrusion.

9. The floor brush assembly of any one of claims 7 to 8, wherein, the trigger mechanism (140) further comprises an elastic member (142), the elastic member (142) being connected between the floor brush base (110) and the trigger member (141), and the elastic member (142) being configured to drive the trigger member (141) to move toward the host connector (120) by its own elastic force.

10. The floor brush assembly of any one of claims 1 to 9, wherein, the trigger member (141) has a trigger portion (1411) arranged on a side of the trigger member (141) facing the contact switch (130), the trigger portion (141) being configured to trigger the contact switch (130), preferably the trigger portion (1411) is a trigger protrusion extending toward the side of the contact switch (130).

11. The floor brush assembly of claim 10, wherein, an avoidance notch (1412) is provided on a wall surface on a side of the trigger member (141) facing away from the host connector (120) and facing the contact switch (130), the trigger portion (1411) being located on a side of the avoidance notch (1412) close to the host connector (120), the avoidance notch (1412) being used to avoid the contact switch (130) when the host connector (120) pushes the trigger member (141) to move relative to the contact switch (130).

12. The floor brush assembly of claim 9, wherein, the floor brush base (110) is provided with an accommodating groove (111) which opens toward the side of the host connector (120), a first position limiting structure (112) being provided on a bottom wall of the accommodating groove (111), an end of the elastic member (142) being connected to the first position limiting structure (112); and / or, the trigger member (141) is provided with a second position limiting structure (1421) at an end facing the elastic member (142), the elastic member (142) being connected to the second position limiting structure (1421), the first position limiting structure (112) and / or the second position limiting structure (1421) being configured to limit the relative position between the elastic member (142) and the trigger member (141); preferably, the first position limiting structure (112) and / or the second position limiting structure (1421) is one of a position limiting groove and a position limiting protrusion.

13. The floor brush assembly of claim 12, wherein, the trigger mechanism (140) further comprises a position limiting cover (143) which covers a groove opening of the accommodating groove (111) and is connected to the floor brush base (110), the position limiting cover (143) is provided with a guiding hole (1431) that penetrates through surfaces on two opposite sides of the position limiting cover (143), at least a portion of the trigger member (141) is arranged in and passing through the guiding hole (1431).

14. The floor brush assembly of claim 13, wherein, the trigger member (141) comprises a sliding portion (1413) and an abutting portion (1414) connected in sequence, the sliding portion (1413) being located in the accommodating groove (111), the elastic member (142) being connected between the sliding portion (1413) and the first position limiting structure (112), the abutting portion (1414) being arranged in and passing through the guiding hole (1431), the host connector (120) pushing the abutting portion (1414) to cause the sliding portion (1413) to move relative to the contact switch (130).

15. A cleaning appliance (10), wherein, it comprises a host (200) and the floor brush assembly (100) of any one of claims 1 to 14, the host (200) being connected to the host connector (120) in the floor brush assembly (100), the host (200) comprising a negative pressure device (220) and a wastewater tank (210), the contact switch (130) in the floor brush assembly (100) being electrically connected to the negative pressure device (220) to control an operating state of the negative pressure device (220), the negative pressure device (220) being connected to the wastewater tank (210), and the negative pressure device (220) being configured to provide a suction force to draw wastewater generated during cleaning into the wastewater tank (210).

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