Floor brush assembly and cleaning appliance

Abstract

The present application provides a floor brush assembly (100) for a cleaning appliance. The floor brush assembly (100) comprises: a floor brush base (110); a host connector (120) hinged to the floor brush base (110), the host connector (120) is rotatable relative to the floor brush base (110) around a rotation axis between a non-lying posture and a lying posture; and a sensing switch, the sensing switch comprising a first sensing member (130) and a second sensing member (140). The first sensing member (130) is arranged on the floor brush base (110), the second sensing member (140) is arranged on the host connector (120) and is rotatable with the host connector (120) relative to the floor brush base (110) around the rotation axis. The sensing switch is configured to generate a trigger signal as a relative position of the first sensing member (130) and the second sensing member (140) changes, and the trigger signal corresponds to the host connector (120) in the lying posture and is used for changing an operating state of a negative pressure device in the cleaning appliance. The present application also provides a cleaning appliance (10) including the floor brush assembly (100).

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, which can accurately identify the lying posture of a host relative to the floor brush assembly, and change an operating state of a negative pressure device according to a signal of the identification to prevent wastewater in a wastewater tank from entering the interior of the negative pressure device, thereby improving the performance of the negative pressure device.

[0006] In order 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. The floor brush assembly comprises: a floor brush base; a host connector hinged to the floor brush base, the host connector is rotatable relative to the floor brush base around a rotation axis between a non-lying posture and a lying posture; and a sensing switch, the sensing switch comprising a first sensing member and a second sensing member. The first sensing member is arranged on the floor brush base, the second sensing member is arranged on the host connector and is rotatable with the host connector relative to the floor brush base around the rotation axis, wherein the sensing switch is configured to generate a trigger signal as a relative position of the first sensing member and the second sensing member changes, and the trigger signal corresponds to the host connector in the lying posture and is used for changing an operating state of a negative pressure device in the cleaning appliance.

[0008] The embodiment of the present application provides the floor brush assembly with the sensing switch which comprises the first sensing member and the second sensing member. The first sensing member is arranged on the floor brush base and the second sensing member is arranged on the host connector, and the second sensing member rotates with the host connector relative to the floor brush base around the rotation axis to rotate toward or away from the first sensing member, wherein the position between the first sensing member and the second sensing member where the sensing switch generates the trigger signal is consistent with the position of the host connector when it is in the lying posture. Thus, when the sensing switch generates the trigger signal, it can be determined that the host connector is in a lying posture. This allows for the change of the operating state of the negative pressure device in the cleaning appliance based on the triggering signal, preventing wastewater from entering the interior of the negative pressure device and thus improving the performance and operational reliability of the negative pressure device.

[0009] In some optional modes of realization, one of the first sensing member and the second sensing member comprises a sensor, and the other is a detected member, the sensor being configured to detect the relative distance between the sensor and the detected member.

[0010] With such arrangement, the relative distance between the sensor and the detected member is detected through the two to identify whether the host connector is in the lying posture. The detection method is simple and easy to implement.

[0011] In some optional modes of realization, one of the first sensing member and the second sensing member is a Hall sensor, and the other is a magnetic member.

[0012] With such arrangement, the distance between the Hall sensor and the magnetic member can be determined through a sensing signal between the two, and the position of the host connector can be identified by the distance. The structure is simple, and no complicated electrical wiring is required. Thus, costs can be reduced.

[0013] In some optional modes of realization, when one of the first sensing member and the second sensing member enters or leaves an effective sensing area of the other, the sensing switch generates the trigger signal.

[0014] With such arrangement, the signal triggering method and structure are simple, and the difficulty in identifying the position of the host connector is reduced, thereby improving the user experience.

[0015] In some optional modes of realization, the first sensing member is arranged on one side of the rotation axis of the host connector, when the host connector moves to the lying posture, the second sensing member moves with the host connector to a side of the rotation axis close to the first sensing member and is arranged to be facing the first sensing member.

[0016] With such arrangement, the distance between the first sensing member and the second sensing member is closer. Thus, functional reliability of the first sensing member and the second sensing member can be effectively guaranteed.

[0017] In some optional modes of realization, a mounting groove that opens toward the side of the host connector, is provide on the floor brush base at a position corresponding to the host connector in the lying posture; the first sensing member comprises a circuit board and a sensing component located on the circuit board, the circuit board being arranged in the mounting groove, the sensing component being arranged on a side of the circuit board facing the host connector and being electrically connected to the circuit board.

[0018] This arrangement facilitates the position limiting and fixing of the first sensing member.

[0019] In some optional modes of realization, the mounting groove extends in a vertical direction; when the second sensing member rotates to the lying posture, the second sensing member is arranged to be facing and parallel to the circuit board.

[0020] Such arrangement further reduces the sensing distance between the first sensing element and the second sensing element, thereby effectively ensuring the reliability of functions of the first sensing element and the second sensing element, and improving the accuracy of identifying the position of the host connector through the trigger signal.

[0021] In some optional modes of realization, an elastic position limiting mechanism is further comprised, which is arranged on the floor brush base, the elastic position limiting mechanism having a first position limiting portion, an outer wall surface of the host connector being provided with a second position limiting portion matching the first position limiting portion, the second position limiting portion being capable of rotating from one side of the rotation axis to the other side with the host connector, the first position limiting portion abutting against the second position limiting portion to limit the position of the host connector in the rotation direction when the host connector rotates to an upright posture relative to the floor brush base.

[0022] Such arrangement can limit the relative position between the host connector in an upright posture and the floor brush base, thereby improving the stability of the host connector in an upright posture and improving the user experience.

[0023] In some optional modes of realization, the elastic position limiting mechanism comprises a position limiting member and an elastic member, the position limiting member being arranged below the host connector and abutting against the host connector, one end of the elastic member being connected to one end of the position limiting member facing away from the host connector, the other end of the elastic member abutting against the floor brush base, the position limiting member being configured to move in a vertical direction under the action of an external force, the first position limiting portion being arranged at one end of the position limiting member facing the host connector.

[0024] With such arrangement, the elastic member can make the position limiting member always abut against the host connector. Thus, the stability of the host connector in any posture can be improved.

[0025] In some optional modes of realization, the first position limiting portion is a first position limiting protrusion, and the second position limiting portion is a second position limiting protrusion matching the first position limiting protrusion.

[0026] With such arrangement, the position limiting structure is simple, easy to process, and low in cost.

[0027] In some optional modes of realization, the second sensing member is embedded in the second position limiting protrusion.

[0028] Such arrangement can improve the compactness of the structure.

[0029] In some optional modes of realization, a symmetric center plane of the first position limiting protrusion and the rotation axis are in a same plane, and the first position limiting protrusion has guiding slopes on both opposite sides of the symmetric center plane, which are symmetric relative to the symmetric center plane.

[0030] With such arrangement, when the host connector rotates, it can be guided by the guiding slopes of the first position limiting protrusion to prevent jamming between the host connector and the first position limiting protrusion.

[0031] In some optional modes of realization, an accommodating groove that opens on top is provided on the floor brush base at a position corresponding to the elastic member, the elastic member and the position limiting member being located in the accommodating groove, a third position limiting portion being provided on a bottom wall of the accommodating groove, the elastic member being connected to the third position limiting portion, the third position limiting portion being configured to limit the position of the elastic member in a horizontal direction.

[0032] With such arrangement, the accommodating groove can accommodate the elastic member and the position limiting member, thereby improving the compactness of the structure.

[0033] In some optional modes of realization, a position limiting cover is further comprised, the position limiting cover closing and covering the accommodating groove, a guiding hole that penetrates through the surfaces on both opposite sides of the cover being provided on the position limiting cover at a position corresponding to the first position limiting portion, the first position limiting portion being arranged in and passing through the guiding hole.

[0034] Such arrangement can guide the movement of the first position limiting portion by the guiding hole to prevent the first position limiting portion from deviating during movement, which would affect the position limiting accuracy of the host connector.

[0035] A second aspect of the embodiments of the present application provides a cleaning appliance, comprising a host and a floor brush assembly provided by the above embodiments, the host comprising a wastewater tank and a negative pressure device, the host being connected to the host connector in the floor brush assembly, the sensing switch being electrically connected to 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.

[0036] 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.

[0037] 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

[0038] 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 a partial enlarged schematic view of part A in Figure 2; Figure 4 is an exploded schematic view of a structure of a floor brush assembly provided by an embodiment of the present application; Figure 5 is a schematic view of the state of a floor brush assembly provided by an embodiment of the present application, wherein the host connector is in a lying posture; Figure 6 is a schematic view of the state of a floor brush assembly provided by an embodiment of the present application, wherein the host connector is in an upright posture; Figure 7 is a schematic view of the state of a floor brush assembly provided by an embodiment of the present application, wherein the host connector is between a lying posture and an upright posture.

[0039] Description of reference signs: 10-cleaning appliance; 100-floor brush assembly; 110-floor brush base; 111-mounting groove; 112-accommodating groove; 113-third position limiting portion; 120-host connector; 121-second position limiting portion; 130-first sensing member; 131-circuit board; 132-sensing component; 140-second sensing member; 150-first position limiting portion; 151-guiding slope; 160-position limiting member; 170-elastic member; 180-position limiting cover; 181-guiding hole; 200-host; 210-wastewater tank; 220-negative pressure device; M-rotation axis. Detailed Description of Embodiments

[0040] 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.

[0041] To solve the above problem, embodiments of the present application provide a floor brush assembly and a cleaning appliance, wherein the floor brush assembly is provided with a sensing switch which comprises a first sensing member and a second sensing member. The first sensing member is arranged on a floor brush base, and the second sensing member is arranged on a host connector. The second sensing member rotates relative to the floor brush base around a rotation axis with the host connector, to rotate toward or away from the first sensing member, wherein the position where the sensing switch generates a trigger signal, which is between the first sensing member and the second sensing member, is consistent with the position of the host connector when it is in a lying posture. Therefore, when the sensing switch generates the trigger signal, it can be determined that the host connector is in the lying posture, which allows for the change of the operating state of a negative pressure device in the cleaning appliance based on the trigger signal, preventing wastewater from entering the interior of the negative pressure device and thus improving the performance and operational reliability of the negative pressure device.

[0042] 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.

[0043] 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.

[0044] 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 (not illustrated), 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.

[0045] 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.

[0046] 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.

[0047] 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.

[0048] 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.

[0049] With reference to and as shown in Figures 2 to 7, an embodiment of the present application provides a floor brush assembly 100, which comprises a floor brush base 110, a host connector 120 and a sensing switch. The host connector 120 is hinged to the floor brush base 110, and rotates between an upright posture and a lying posture relative to the floor brush base 110, wherein the host connector 120 is used to connect the host 200 in the cleaning appliance 10. Thus, the relative posture between the host connector 120 and the floor brush base 110 is considered equivalent to the relative posture between the host 200 and the floor brush base 110.

[0050] It can be understood that when the cleaning appliance 10 is in normal use, the host connector 120 rotates to the upright posture (as shown in Figure 6), and the user can push the cleaning appliance 10 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 (as well as the host connector 120) usually needs to rotate to the lying posture (as shown in Figure 5), so that the cleaning appliance can access the low area for cleaning.

[0051] In some embodiments, the sensing switch comprises a first sensing member 130 and a second sensing member 140. The first sensing member 130 is arranged on the floor brush base 110, for example, the first sensing member 130 is arranged on the floor brush base 110 to correspond to the position of the host connector 120 when it is in a lying posture. The second sensing member 140 is arranged on the host connector 120, and rotates around a rotation axis relative to the floor brush base 110 along with the host connector 120. In other words, the rotation axis is the pitch rotation axis around which the host connector 120 rotates relative to the floor brush base 110. For ease of description, in this embodiment of the present application, the rotation axis is denoted by M (as shown in Figures 2 to 4). The host connector 120 can rotate around the rotation axis M relative to the floor brush base 110 between the upright posture and the lying posture.

[0052] When the host connector 120 rotates around the rotation axis M relative to the floor brush base 110 to reach the lying posture, the second sensing member 140 on the host connector 120 is arranged to be facing the first sensing member 130, such that when the host connector 120 is in the lying posture, the position and distance between the first sensing member 130 and the second sensing member 140 that can generate the trigger signal are consistent with the position of the host connector 120 in the lying posture. In other words, as long as the sensing switch generates the trigger signal, it can be determined that the host connector 120 is in the lying posture. Therefore, the method for identifying the host connector 120 in the lying posture is simple and has high accuracy.

[0053] The sensing switch can be directly connected to the negative pressure device through a signal, so that when the sensing switch generates a trigger signal, the trigger signal can be directly transmitted to the negative pressure device to change the operating state of the negative pressure device, thereby preventing wastewater from entering the negative pressure device. Alternatively, the sensing switch can be connected through a signal to a processor in the cleaning appliance 10, and the processor is electrically connected to the negative pressure device. In this way, when the sensing switch generates a trigger signal and transmits the trigger signal to the processor, the processor controls and changes the operating state of the negative pressure device according to the trigger signal, as long as it can prevent wastewater from entering the negative pressure device, no limitation is made hereto.

[0054] It should be noted that the operating state of the negative pressure device includes for example starting, adjusting different levels of suction force, and stopping. In the embodiment of the present application, after the sensing switch generates a trigger signal, the operating state of the negative pressure device in the cleaning appliance 10 is changed based on the trigger signal, for example, by lowering the suction force level, i.e., reducing the suction force, as long as the suction force does not cause wastewater to enter the interior of the negative pressure device. In this way, while improving the performance of the negative pressure device, the cleaning effect can also be ensured.

[0055] Alternatively, when the sensing switch generates a trigger signal, the power supply of the negative pressure device can also be controlled to be cut off. 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, after the power supply to the negative pressure device is cut off, wastewater can be prevented 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.

[0056] In some embodiments, if one of the first sensing member 130 and the second sensing member 140 enters the effective sensing area of the other, the sensing switch generates a trigger signal. For example, the first sensing member 130 and the second sensing member 140 are arranged at positions corresponding to the position of the host connector 120 when it is in the lying posture. Therefore, when the host connector 120 rotates to the lying posture, for instance, the second sensing member 140 enters the effective sensing area of the first sensing member 130, causing the sensing switch to generate a trigger signal to change the operating state of the negative pressure device.

[0057] In other embodiments, the first sensing member 130 and the second sensing member 140 are arranged at positions corresponding to the host connector 120 in a non-lying posture, so that when the host connector 120 is in the non-lying posture, one of the first sensing member 130 and the second sensing member 140 is within the sensing area of the other. When the host connector 120 is in a lying posture, one of the first sensing member 130 and the second sensing member 140 leaves the sensing area of the other, so that when the sensing switch leaves the mutual sensing area, it generates a trigger signal to change the operating state of the negative pressure device.

[0058] It can be seen that in the embodiment of the present application, the floor brush assembly 100 is provided with the sensing switch which comprises the first sensing member 130 and the second sensing member 140. The first sensing member 130 is arranged on the floor brush base 110, and the second sensing member 140 is arranged on the host connector 120. The second sensing member 140 rotates relative to the floor brush base 110 around the rotation axis with the host connector 120, in order to rotate toward or away from the first sensing member 130, wherein the position where the sensing switch generates a trigger signal, which is between the first sensing member 130 and the second sensing member 140, is consistent with the position of the host connector 120 when it is in a lying posture. Therefore, when the sensing switch generates a trigger signal, it can be accurately determined that the host connector 120 is in the lying posture, which allows for the change of the operating state of the negative pressure device in the cleaning appliance 10 based on the trigger signal, preventing wastewater from entering the interior of the negative pressure device and thus improving the performance and operational reliability of the negative pressure device.

[0059] That is to say, in the embodiment of the present application, directly based on whether a trigger signal is generated between the first sensing element 130 and the second sensing element 140 or not, it can be accurately identified whether the host connector 120 is in a lying posture or not. The identification method is simple and has high accuracy.

[0060] In some optional embodiments, one of the first sensing member 130 and the second sensing member 140 comprises a sensor, and the other is a detected member. The sensor is configured to detect the relative distance between the sensor and the detected member, for example, to detect whether the detected member is within the effective sensing range of the sensor, so as to identify whether the host connector 120 is in a lying posture. The detection method is simple and easy to implement.

[0061] By way of example, one of the first sensing member 130 and the second sensing member 140 is a Hall sensor, and the other is a magnetic member. For example, the first sensing member 130 is a Hall sensor, and the second sensing member 140 is a magnetic member. In this case, as long as the magnetic member can be sensed by the Hall sensor within the sensing area, there is no limitation on its size or shape.

[0062] In addition, by providing that one of the first sensing member 130 and the second sensing member 140 is a Hall sensor and the other is a magnetic member, the distance between the Hall sensor and the magnetic member can be determined through the sensing signal between them, and then the posture of the host connector 120 can be identified based on the distance. This structure is simple and does not require complex electrical wiring, thereby reducing costs.

[0063] In some embodiments, with reference to Figures 2 to 7, the first sensing member 130 is arranged on one side of the rotation axis of the host connector 120. When the host connector 120 moves to a lying posture, the second sensing member 140 moves with the host connector 120 to the side of the rotation axis close to the first sensing member 130 and is arranged opposite the first sensing member 130. The second sensing member 140 enters the effective sensing area of the first sensing member 130, so that the sensing switch generates a trigger signal. In addition, by arranging the first sensing member 130 and the second sensing member 140 to face each other when the host connector 120 is in a lying posture, the distance between the first sensing member 130 and the second sensing member 140 is relatively close, effectively ensuring the functional reliability of the first sensing member 130 and the second sensing member 140, thereby improving the sensing accuracy and sensitivity.

[0064] In some embodiments, the first sensing member 130 can comprise a circuit board 131 and a sensing component 132 located on the circuit board 131. The sensing component 132 is, for example, a Hall sensing component 132. The circuit board 131 is, for example, a Hall circuit board 131.

[0065] In addition, a mounting groove 111 is provided at the position on the floor brush base 110 corresponding to the host connector 120 in the lying posture, which opens toward the side of the host connector 120. The circuit board 131 is arranged in the mounting groove 111. The sensing component 132 is arranged on the side of the circuit board 131 facing the host connector 120 and is electrically connected to the circuit board 131. The relative position between the first sensing element 130 and the floor brush base 110 is limited and fixed by the mounting groove 111, making the limiting method simple and facilitating the mounting of the first sensing member 130.

[0066] In some embodiments, the mounting groove 111 extends in the vertical direction. When the second sensing member 140 rotates to the lying posture, the second sensing member 140 is arranged to be opposite and parallel to the circuit board 131 (as shown in Figure 5). The second sensing member 140 is, for example, a magnetic member that matches the shape of the circuit board 131. In this way, the sensing distance between the first sensing member 130 and the second sensing member 140 can be further reduced, thereby effectively ensuring the reliability of the functions of the first sensing member 130 and the second sensing member 140 and improving the accuracy of identifying the posture of the host connector 120 through the trigger signal.

[0067] For example, in Figures 3 to 7, the circuit board 131 is a rectangular circuit board 131, the mounting groove 111 is a rectangular mounting groove 111 that matches the circuit board 131, and the second sensing member 140 is a rectangular magnet that matches the circuit board 131. Thus, the second sensing member 140 enters the effective sensing area of the first sensing member 130 when the host connector 120 is in the lying posture, and there is no limitation on its volume and area.

[0068] In addition, in order to improve the stability of the host connector 120 in any posture, with reference to Figures 2 to 7, the floor brush assembly 100 further comprises an elastic position limiting mechanism, which is arranged on the floor brush base 110 and has a first position limiting portion 150. A second position limiting portion 121 which matches the first position limiting portion 150 is arranged on the outer wall surface of the host connector 120, and can rotate from one side of the rotation axis to the other side with the host connector 120. When the host connector 120 rotates to an upright posture relative to the floor brush base 110, the first position limiting portion 150 abuts against the second position limiting portion 121 (as shown in Figure 6) to limit the position of the host connector 120 in the rotation direction, that is, to limit the relative position between the host connector 120 in the upright posture and the floor brush base 110, thereby improving the stability of the host connector 120 in the upright posture and improving the user experience.

[0069] In some embodiments, the elastic position limiting mechanism comprises a position limiting member 160 and an elastic member 170. The position limiting member 160 is arranged below the host connector 120 and abuts against the host connector 120. One end of the elastic member 170 is connected to the end of the position limiting member 160 facing away from the host connector 120, and the other end of the elastic member 170 abuts against the floor brush base 110. The position limiting member 160 is configured to move in the vertical direction under the action of an external force. The first position limiting portion 150 is arranged at the end of the position limiting member 160 facing the host connector 120. The elastic member 170 is able to make the position limiting member 160 always abut against the host connector 120 (as shown in Figure 7). In this way, the stability of the host connector 120 in any posture can be improved.

[0070] By way of example, the first position limiting portion 150 is a first position limiting protrusion, and the second position limiting portion 121 is a second position limiting protrusion that matches the first position limiting protrusion. The position limiting structure is simple, easy to process, and low in cost.

[0071] In some embodiments, the second sensing member 140 can be embedded in the second position limiting protrusion. When the host connector 120 is in the lying posture, the second position limiting protrusion faces the side of the first sensing member 130, and the second sensing member 140 embedded in the second position limiting protrusion is arranged to be facing the first sensing member 130. Thus, the compactness of the structure can be improved while ensuring the accuracy of generating the trigger signal.

[0072] By way of example, an embedding groove is provided on the second position limiting protrusion. The contour shape of the embedding groove matches the contour shape of the second sensing member 140, so that the second sensing member 140 is embedded in the embedding groove, thereby limiting the relative position of the second sensing member 140 on the host connector 120 and improving the reliability of fixing the second sensing member 140. This, in turn, can improve the relative position accuracy between the second sensing member 140 and the first sensing member 130.

[0073] In some optional modes of realization, the symmetric center plane of the first position limiting protrusion and the rotation axis are located in the same plane. The first position limiting protrusion has guiding slopes 151 on both opposite sides of the symmetric center plane, with the two sides being symmetric relative to the symmetric center plane. Thus, when the host connector 120 rotates, it can be guided by the guiding slopes 151 of the first position limiting protrusion, thereby prevent jamming between the host connector 120 and the first position limiting protrusion.

[0074] It should be noted that when the host connector 120 rotates, in order to drive it to rotate, it is only necessary to apply to the host connector 120 a friction force that can overcome the friction between the host connector 120 and the elastic member 170, the first position limiting portion 150.

[0075] In addition, the abutting surface of the second position limiting protrusion abutting against the first position limiting protrusion can match the guiding slopes 151, so that when the host connector 120 rotates to the upright state, the second position limiting protrusion abuts against the guiding slopes 151 of the first position limiting protrusion to prevent the host connector 120 from rotating toward the lying posture.

[0076] In some optional modes of realization, an accommodating groove 112 which opens on top is provided at the position on the floor brush base 110 corresponding to the elastic member 170. The elastic member 170 and the position limiting member 160 are located in the accommodating groove 112. A third position limiting portion 113 is provided on the bottom wall of the accommodating groove 112. The elastic member 170 is connected to the third position limiting portion 113. The third position limiting portion 113 is configured to limit the position of the elastic member 170 in the horizontal direction. Thus, the accommodating groove 112 can accommodate the elastic member 170 and the position limiting member 160, thereby improving the compactness of the structure.

[0077] In some embodiments, the third position limiting portion 113 can be, for example, a position limiting groove or a position limiting rib. For example, in Figures 5 to 7, the third position limiting portion 113 is a position limiting rib, and the elastic member 170 is a spring, an end of the spring is sleeved onto the position limiting rib. In addition, the position limiting member 160 can be provided with a fourth position limiting portion on the side facing the elastic member 170. The fourth position limiting portion can be one of a position limiting rib or a position limiting groove. For example, the fourth position limiting portion is a position limiting groove, and the other end of the spring is arranged in the position limiting groove. In this way, the relative position of the elastic member 170 in the accommodating groove 112 can be limited, thereby improving the position reliability of the elastic member 170.

[0078] In some embodiments, with reference to Figures 2 to 4, a position limiting cover 180 is further comprised. The position limiting cover 180 closes and covers the accommodating groove 112. A guiding hole 181 passing through the surfaces on both opposite sides of the cover is provided on the position limiting cover 180 at the position corresponding to the first position limiting portion 150. The first position limiting portion 150 penetrates through the guiding hole 181. In this way, when the position limiting member 160 moves along the direction of the elastic force of the elastic member 170, the movement of the first position limiting portion 150 can be guided by the guiding hole 181 to prevent the first position limiting portion 150 from deviating during movement, which would affect the position limiting precision of the host connector 120.

[0079] The position limiting cover 180 closes and covers the accommodating groove 112, and is detachably connected to the floor brush base 110, so as to facilitate the replacement and maintenance of the elastic member 170 and the position limiting member 160 in the accommodating groove 112. For example, the position limiting cover 180 can be detachably connected to the floor brush base 110 through a threaded fastener. Here no specific limitation is made thereto.

[0080] In addition, in order to improve the overall aesthetics, the apparence face of the position limiting cover 180 can match the apparence face of the floor brush base 110 in terms of color and other aspects.

[0081] With reference back 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.

[0082] 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.

[0083] The host 200 of the cleaning appliance 10 can be referenced to relevant technologies, which is not limited here.

[0084] The embodiments of the present application provide a floor brush assembly and a cleaning appliance, wherein the floor brush assembly is provided with a sensing switch which comprises a first sensing member and a second sensing member. The first sensing member is arranged on a floor brush base, and the second sensing member is arranged on a host connector. The second sensing member rotates relative to the floor brush base around a rotation axis with the host connector, to rotate toward or away from the first sensing member, wherein the position where the sensing switch generates a trigger signal, which is between the first sensing member and the second sensing member, is consistent with the position of the host connector when it is in a lying posture. Therefore, when the sensing switch generates the trigger signal, it can be determined that the host connector is in the lying posture, which allows for the change of the operating state of a negative pressure device in the cleaning appliance based on the trigger signal, preventing wastewater from entering the interior of the negative pressure device and thus improving the performance and operational reliability of the negative pressure device.

[0085] 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.

[0086] 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.

[0087] 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, comprising: - a floor brush base (110); - a host connector (120) hinged to the floor brush base (110), the host connector (120) is rotatable relative to the floor brush base (110) around a rotation axis between a non-lying posture and a lying posture; and - a sensing switch, the sensing switch comprising a first sensing member (130) and a second sensing member (140), wherein the first sensing member (130) is arranged on the floor brush base (110), the second sensing member (140) is arranged on the host connector (120) and is rotatable with the host connector (120) relative to the floor brush base (110) around the rotation axis, wherein the sensing switch is configured to generate a trigger signal as a relative position of the first sensing member (130) and the second sensing member (140) changes, and the trigger signal corresponds to the host connector (120) in the lying posture and is used for changing an operating state of a negative pressure device in the cleaning appliance.

2. The floor brush assembly of claim 1, wherein, one of the first sensing member (130) and the second sensing member (140) comprises a sensor, and the other is a detected member, the sensor being configured to detect the relative distance between the sensor and the detected member.

3. The floor brush assembly of any one of claims 1 to 2, wherein, one of the first sensing member (130) and the second sensing member (140) is a Hall sensor, and the other is a magnetic member.

4. The floor brush assembly of claim 2 or 3, wherein, when one of the first sensing member (130) and the second sensing member (140) enters or leaves an effective sensing area of the other, the sensing switch generates the trigger signal.

5. The floor brush assembly of any one of claims 1 to 4, wherein, the first sensing member (130) is arranged at a side of the rotation axis of the host connector (120), and when the host connector (120) moves to the lying posture, the second sensing member (140) moves with the host connector (120) to a side of the rotation axis close to the first sensing member (130) and is arranged to be facing the first sensing member (130).

6. The floor brush assembly of any one of claims 1 to 5, wherein, a mounting groove (111) that opens toward the side of the host connector (120) is provided on the floor brush base (110) at a position corresponding to the host connector (120) in the lying posture; the first sensing member (130) comprises a circuit board (131) and a sensing component (132) located on the circuit board (131), the circuit board (131) being arranged in the mounting groove (111), the sensing component (132) being arranged on a side of the circuit board (131) facing the host connector (120) and being electrically connected to the circuit board (131).

7. The floor brush assembly of claim 6, wherein, the mounting groove (111) extends in a vertical direction; when the second sensing member (140) rotates to the lying posture, the second sensing member (140) is arranged to be facing and parallel to the circuit board (131).

8. The floor brush assembly of any one of any one of claims 1 to 7, wherein, it further comprises an elastic position limiting mechanism arranged on the floor brush base (110), the elastic position limiting mechanism comprising a first position limiting portion (150); a second position limiting portion (121) that matches the first position limiting portion (150) is provided at an outer wall face of the host connector (120) and is capable of rotating with the host connector (120) from one side of the rotation axis to another side; the first position limiting portion (150) abuts against the second position limiting portion (121) when the host connector (120) rotates relative to the floor brush base (110) to the upright posture, so as to limit the position of the host connector (120) in a rotation direction.

9. The floor brush assembly of claim 8, wherein, the elastic position limiting mechanism comprises a position limiting member (160) and an elastic member (170), the position limiting member (160) being arranged below the host connector (120) and abutting against the host connector (120), one end of the elastic member (170) being connected to an end of the position limiting member (160) facing away from the host connector (120), the other end of the elastic member (170) abutting against the floor brush base (110), the position limiting member (160) being configured to move in a vertical direction under the action of an external force, the first position limiting portion (150) being arranged at an end of the position limiting member (160) facing the host connector (120).

10. The floor brush assembly of claim 9, wherein, the first position limiting portion (150) is a first position limiting protrusion, and the second position limiting portion (121) is a second position limiting protrusion matching the first position limiting protrusion.

11. The floor brush assembly of claim 10, wherein, the second sensing member (140) is embedded in the second position limiting protrusion.

12. The floor brush assembly of claim 10 or 11, wherein, a symmetric center plane of the first position limiting protrusion and the rotation axis are in a same plane, and the first position limiting protrusion has guiding slopes on both opposite sides of the symmetric center plane, which are symmetric relative to symmetric center plane.

13. The floor brush assembly of any one of claims 9 to 12, wherein, an accommodating groove (112) that opens at the top is provided on the floor brush base (110) at a position corresponding to the elastic member (170), the elastic member (170) and the position limiting member (160) being located in the accommodating groove (112), a third position limiting portion (113) being provided on a bottom wall of the accommodating groove (112), the elastic member (170) being connected to the third position limiting portion (113), the third position limiting portion (113) being configured to limit the position of the elastic member (170) in a horizontal direction.

14. The floor brush assembly of claim 13, further comprising a position limiting cover (180) closing and covering the accommodating groove (112), a guiding hole (181) penetrating through surfaces on both opposite sides of the cover is provided on the position limiting cover (180) at a position corresponding to the first position limiting portion (150), and the first position limiting portion (150) passes through the guiding hole (181).

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) comprising a wastewater tank (210) and a negative pressure device (220), the host (200) being connected to the host connector (120) in the floor brush assembly (100), the sensing switch being electrically connected to the negative pressure device (220), the negative pressure device (220) being connected to the wastewater tank (210) and configured to provide a suction force to draw wastewater generated during cleaning into the wastewater tank (210).

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