Suction cleaner and cleaning system

Abstract

The present application discloses a suction cleaner and a cleaning system. The suction cleaner comprises a main body, a dust cup assembly and a driving device. The main body comprises a housing, and the housing defines an accommodating space. The dust cup assembly is mounted on the main body; a circular filter screen is provided inside the dust cup; a scraping mechanism is provided on the outer periphery of the filter screen; and the scraping mechanism is used for scraping off at least part of dirt on the surface of the circular filter screen. The driving device comprises a driver and a transmission mechanism; the driver is provided in the accommodating space; one end of the transmission mechanism is transmittingly connected to the driver, and the other end of the transmission mechanism acts on the scraping mechanism; the driver is used for generating a driving force to drive, by means of the transmission mechanism, the scraping mechanism to move from a scraping starting position to a scraping ending position in the axial direction of the circuital filter screen. The driving device is provided inside the main body, and the operation of the driver is controlled to implement a scraping operation of the scraping mechanism, so as to scrape off dirt on the circular filter screen, thereby preventing users from manually cleaning the circular filter screen.

Description

Dust collector and cleaning system TECHNICAL FIELD

[0001] The present application relates to the technical field of cleaning equipment, and in particular to a dust collector and a cleaning system. BACKGROUND

[0002] The cleaning system comprises a handheld dust collector and a base station for docking the handheld dust collector. The base station is generally provided with a dust bag or a dust collecting device for accommodating the dirt transferred from the dust cup on the handheld dust collector. In this way, the user only needs to dock the handheld dust collector to the base station after each use of the handheld dust collector, and then start the self-cleaning function to transfer the dirt in the dust cup to the base station. When the user uses the handheld dust collector next time, he only needs to take down the handheld dust collector.

[0003] However, although the ring-shaped filter screen can improve the separation efficiency, when cleaning relatively long hair, some hair often gets entangled on the ring-shaped filter screen, which is relatively difficult to clean and may affect the cleaning efficiency over time. SUMMARY

[0004] In view of the deficiencies in the above-mentioned technology, the present application provides a cleaning system which can remove the dirt entangled on the ring-shaped filter screen during dust collection without manual cleaning by the user.

[0005] In one aspect, the present application provides a cleaning system comprising

[0006] a handheld dust collector for cleaning a surface to be cleaned; the handheld dust collector comprises a suction motor for generating a suction airflow and a dust collecting assembly for collecting dirt; the dust collecting assembly comprises a dust cup and a ring-shaped filter screen arranged in the dust cup; the handheld dust collector further comprises a dust scraping mechanism for scraping at least part of the dirt on the ring-shaped filter screen and a driving device for driving the dust scraping mechanism;

[0007] a base station for docking the handheld dust collector, the base station comprising a dust storage space for accommodating the dirt transferred from the dust cup;

[0008] The handheld dust collector further comprises an airflow converter, the airflow converter comprising a converter housing and a converter mechanism, the converter housing defining a first inlet, a second inlet and an outlet; the converter mechanism is configured to open one of the first inlet and the second inlet when the other one is closed; the first inlet is in fluid communication with the interior of the dust cup, and the second inlet is in fluid communication with the dust storage space of the base station; the outlet is in fluid communication with the suction port of the suction motor.

[0009] Optionally, the handheld dust collector further comprises a connecting channel for connecting the second inlet and the dust storage space of the base station, the connecting channel being located below the converter housing and the driving device being located above the airflow converter when the handheld dust collector is placed horizontally.

[0010] Optionally, the airflow converter is located between the suction motor and the dust cup when the handheld dust collector is placed horizontally.

[0011] Optionally, the handheld dust collector further comprises a battery pack, the connecting channel being at least partially arranged in front of the battery pack when the handheld dust collector is placed horizontally.

[0012] Optionally, the driving device comprises a motor and a transmission mechanism, at least part of the transmission mechanism being arranged above the suction motor.

[0013] Optionally, the converter mechanism comprises a driving rod, a connecting rod in transmission connection with the driving rod, and a closing plate connected with the connecting rod, the driving rod and the connecting rod being located outside the converter housing, and the closing plate being located inside the converter housing.

[0014] Optionally, the driving rod is configured to drive the closing plate to open one of the first inlet and the second inlet and to close the other one under the action of an external force through the connecting rod.

[0015] Optionally, the driving device comprises a motor and a transmission mechanism, the motor being arranged below or behind the suction motor and the transmission mechanism being arranged below the suction motor when the handheld dust collector is placed horizontally.

[0016] Optionally, the handheld dust collector further comprises a handle, the handle being arranged below the suction motor and the driving device being arranged between the suction motor and the handle when the handheld dust collector is placed horizontally.

[0017] Optionally, the handheld dust collector further comprises a connecting channel for connecting the second inlet and the dust storage space of the base station, the connecting channel being located above the converter housing and the driving device being located below the airflow converter when the handheld dust collector is placed horizontally.

[0018] In another aspect, the present application also discloses a cleaning system, comprising:

[0019] A handheld dust cleaner for cleaning a surface to be cleaned; the handheld dust cleaner comprises a suction motor for generating a suction airflow and a dust collection assembly for collecting dirt; the dust collection assembly comprises a dust cup and an annular filter screen arranged in the dust cup; the handheld dust cleaner further comprises a dust scraping mechanism for scraping at least part of the dirt on the annular filter screen and a driving device for driving the dust scraping mechanism;

[0020] A base station for docking the handheld dust cleaner, the base station comprises a dust storage space, the dust storage space is configured to receive dirt transferred from the dust cup;

[0021] The cleaning system further comprises a first air duct and a second air duct, the first air duct is a part of the air duct through which the suction airflow passes when the handheld dust cleaner cleans the surface to be cleaned; the second air duct is a part of the air duct used to empty the dust cup after the handheld dust cleaner is docked to the base station; the cleaning system further comprises an airflow switcher, the airflow switcher is configured to close the first air duct and open the second air duct after the handheld dust cleaner is docked to the base station;

[0022] A controller for controlling the suction motor and the driving device; the controller is configured to control the suction motor to operate for a preset time after receiving a self-cleaning instruction, so as to transfer the dirt in the dust cup to the base station through the second air duct, and control the driving device to drive the dust scraping mechanism to perform a dust scraping action after the suction motor operates for a first preset time.

[0023] The application discloses a cleaning system, comprising:

[0024] A surface cleaning device for cleaning a surface to be cleaned, the surface cleaning device comprises a suction motor for generating a suction airflow and a dust cup for storing dirt;

[0025] A base station for docking the surface cleaning device, the base station comprises a dust storage space, the dust storage space is configured to receive dirt transferred from the dust cup;

[0026] A three-way structure is arranged upstream of a suction port of the suction motor, the three-way structure comprises a first air inlet, a second air inlet and an air outlet; the first air inlet is in fluid communication with the dust cup, the second air inlet is in fluid communication with the dust storage space, and the air outlet is in fluid communication with the suction port;

[0027] The surface cleaning device further comprises an air duct switching assembly, the air duct switching assembly is configured to close the first air inlet and open the second air inlet after the surface cleaning device is docked to the base station; and open the first air inlet and close the second air inlet after the surface cleaning device leaves the base station.

[0028] Optionally, the air duct switching assembly comprises a first connecting rod, a second connecting rod in transmission connection with the first connecting rod, and a closing structure connected with the second connecting rod; the first connecting rod rotates to drive the second connecting rod, so that the second connecting rod drives the closing structure to close the first air inlet or the second air inlet.

[0029] Optionally, the first connecting rod is installed in the surface cleaning device through a first pivot structure, and the first connecting rod comprises a docking end and a linkage end located at two ends of the first pivot structure respectively.

[0030] Optionally, the transmission end of the second connecting rod is in transmission connection with the linkage end, and the fixed end of the second connecting rod is fixedly connected with the closing structure, so that the second connecting rod drives the closing structure to rotate around a second pivot structure; when the linkage end rotates around the first pivot structure, the second connecting rod is driven to rotate around the second pivot structure.

[0031] The application also provides a dust collector, comprising:

[0032] a main body comprising a housing defining a receiving space;

[0033] a dust cup assembly installed on the main body, wherein the dust cup is provided with an annular filter screen, and the outer periphery of the annular filter screen is provided with a dust scraping mechanism for scraping at least part of the dirt on the surface of the annular filter screen;

[0034] a driving device comprising a driver and a transmission mechanism, wherein the driver is arranged in the receiving space, one end of the transmission mechanism is in transmission connection with the driver, and the other end of the transmission mechanism acts on the dust scraping mechanism; the driver is used to generate a driving force to move the dust scraping mechanism from a dust scraping initial position to a dust scraping terminal position along the axial direction of the annular filter screen through the transmission mechanism.

[0035] Optionally, the transmission mechanism comprises a screw rod in transmission connection with the driver and a push rod in transmission connection with the screw rod; the screw rod rotates to drive the push rod to move in the dust scraping direction.

[0036] Optionally, the transmission mechanism comprises a push rod, which is configured to abut against the dust scraping mechanism to push the dust scraping mechanism to move downward during movement in the dust scraping direction.

[0037] Optionally, the dust cup assembly further comprises a guide rod installed on the dust cup assembly and used to guide the dust scraping mechanism to move in the dust scraping direction.

[0038] Optionally, the dust scraping mechanism comprises a ring-shaped support and a scraping strip arranged on the ring-shaped support, the scraping strip being configured to scrape at least part of the dirt attached to the surface of the annular filter screen, the dust scraping mechanism further comprising a connecting structure fixedly connected to the ring-shaped support, the connecting structure comprising an extension rod fixedly connected to the ring-shaped support and a guide portion fixedly connected to the extension rod; the guide portion is configured to reciprocate along a guide rod arranged on the dust cup assembly to guide the ring-shaped support to move along the guide rod in a dust scraping direction.

[0039] Optionally, the extension rod is located inside a circumference defined by the sidewall of the dust cup, and the guide rod is arranged outside the circumference defined by the sidewall of the dust cup.

[0040] Optionally, when the dust cup assembly is separated from the main body, the dust scraping mechanism is separable from the driving device.

[0041] The present application provides a cleaning system, which comprises a handheld cleaner and a base station. The handheld cleaner is configured to clean a surface to be cleaned. The handheld cleaner comprises a suction motor configured to generate a suction airflow and a dust collection assembly configured to collect dirt. The dust collection assembly comprises a dust cup and an annular filter screen arranged in the dust cup. The handheld cleaner further comprises a dust scraping mechanism configured to scrape at least part of the dirt attached to the surface of the annular filter screen and a driving device configured to drive the dust scraping mechanism. The base station is configured to dock with the handheld cleaner, and the base station comprises a dust storage space configured to accommodate the dirt transferred from the dust cup. The handheld cleaner further comprises an airflow switcher comprising a switcher housing and a switcher mechanism. The switcher housing defines a first inlet, a second inlet and an outlet. The switcher mechanism is configured to open one of the first inlet and the second inlet when the other one of the first inlet and the second inlet is closed. The first inlet is in fluid communication with the interior of the dust cup, the second inlet is in fluid communication with the dust storage space of the base station, and the outlet is in fluid communication with the suction port of the suction motor. With the above structure, the dust cup can be effectively emptied by the suction motor and the dust scraping mechanism can be used to scrape the dirt on the filter screen, thereby reducing the cost and effectively removing the dirt on the filter screen. BRIEF DESCRIPTION OF DRAWINGS

[0042] FIG. 1 is a schematic structural view of a cleaning system according to an embodiment of the present application;

[0043] FIG. 2 is a schematic cross-sectional view of the cleaning system according to an embodiment of the present application;

[0044] FIG. 3 is a partial enlarged view of the area A shown in FIG. 2;

[0045] FIG. 4 is a schematic cross-sectional view of the handheld cleaner according to an embodiment of the present application;

[0046] FIG. 5 is a schematic structural view of the switcher mechanism according to an embodiment of the present application;

[0047] Figure 6 is a schematic view of the airflow diverter in a position to direct air through the first airway in one embodiment;

[0048] Figure 7 is a schematic view of the airflow diverter in a position to direct air through the second airway in one embodiment;

[0049] Figure 8 is a schematic view of the dust wiping mechanism in one embodiment;

[0050] Figure 9 is a schematic view of the dust wiping mechanism in a starting position in one embodiment;

[0051] Figure 10 is a schematic view of the dust wiping mechanism in an ending position in one embodiment;

[0052] Figure 11 is a cross-sectional view of the handheld vacuum cleaner in a horizontal position in one embodiment;

[0053] Figure 12 is a schematic view of a cleaning system in another embodiment;

[0054] Figure 13 is a schematic view of the handheld vacuum cleaner in a horizontal position in one embodiment;

[0055] Figure 14 is a schematic view of a vacuum cleaner in one embodiment of the application;

[0056] Figure 15 is a schematic view of the vacuum cleaner in one embodiment with certain components hidden;

[0057] Figure 16 is a schematic view of the dust wiping mechanism in one embodiment;

[0058] Figure 17 is a cross-sectional view of the vacuum cleaner along the axial direction of the dust cup assembly in one embodiment;

[0059] Figure 18 is a schematic view of the dust wiping mechanism in a starting position in one embodiment;

[0060] Figure 19 is a schematic view of the dust wiping mechanism in an ending position in one embodiment;

[0061] Figure 20 is a schematic view of the extension rod and guide rod relative to the sidewall of the dust cup in one embodiment;

[0062] Figure 21 is a schematic view of the dust cup assembly that is detachable from the main body in one embodiment;

[0063] Figure 22 is a schematic view of a base station in one embodiment;

[0064] Figure 23 is an enlarged view of the structure shown in area A of Figure 22;

[0065] Figure 24 is a schematic view of the position of the airway switching assembly when the first airway is open in one embodiment;

[0066] Figure 25 is an enlarged view of the structure in area B of Figure 24;

[0067] Fig. 26 is a schematic view of the position of the air duct switching assembly when the second air duct is in use in one embodiment;

[0068] Fig. 27 is an enlarged view of the structure of area C in Fig. 26;

[0069] Fig. 28 is a schematic view of the structure when the first air inlet is closed in one embodiment;

[0070] Fig. 29 is a schematic view of the structure when the second air inlet is closed in one embodiment;

[0071] Fig. 30 is a schematic view of the structure of the air duct switching assembly in one embodiment;

[0072] Fig. 31 is a schematic view of the structure of the handheld vacuum cleaner in cross section;

[0073] Fig. 32 is a schematic view of the structure of the cleaning system in cross section in one embodiment;

[0074] Fig. 33 is an enlarged view of the structure of area D in Fig. 32. DETAILED DESCRIPTION

[0075] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0076] It should be noted that if the embodiments of the present application involve directional indications, the directional indications are only used to explain the relative position relationship, movement condition, etc. between the components in a certain posture, and if the certain posture changes, the directional indications also change accordingly.

[0077] In addition, if the embodiments of the present application involve descriptions such as “first”, “second”, etc., the descriptions of “first”, “second”, etc. are only for description purposes, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by “first”, “second” can explicitly or implicitly include at least one of the features. In addition, the meaning of “and / or” appearing throughout the text includes three parallel solutions, for example, “A and / or B” includes A solution, or B solution, or A and B solutions. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the fact that a person skilled in the art can realize it, and when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the scope of protection claimed by the present application.

[0078] In the description of the application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "linking" should be understood in a broad sense, for example, can be fixedly connected, can be detachably connected, or integrally connected; can be mechanically connected, can be electrically connected; can be directly connected, can be indirectly connected through an intermediate medium, can be internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.

[0079] Referring to FIGS. 1-11, a cleaning system 100 is disclosed, which includes a handheld vacuum cleaner 1 and a base station 2 for docking the handheld vacuum cleaner 1. The handheld vacuum cleaner 1 is used for cleaning a surface to be cleaned. The base station 2 is used for docking the handheld vacuum cleaner 1. The base station 2 includes a dust storage space 21, which includes a dirty container for containing dirt transferred from a dust cup 121. The handheld vacuum cleaner 1 includes a suction motor 11 for generating a suction airflow and a dust collection assembly 12 for collecting dirt. The dust collection assembly 12 includes the dust cup 121 and an annular filter screen 122 arranged in the dust cup 121. The handheld vacuum cleaner 1 further includes a wiper mechanism 13 for wiping at least part of the dirt of the annular filter screen 122 and a driving device 14 for driving the wiper mechanism 13. The driving device 14 is powered by a battery pack 17 of the handheld vacuum cleaner 1, and the driving device 14 can also be powered by a power supply connected to the base station 2. The cleaning system 100 is further provided with a controller 19, which can control the driving device 14 according to a signal to drive the wiper mechanism 13.

[0080] The handheld dust collector 1 further comprises an airflow switcher 15, which comprises a switcher housing 151 and a switcher mechanism 152. The switcher housing 151 defines a first inlet 156, a second inlet 157 and an outlet 158. The switcher mechanism 152 is configured to open one of the first inlet 156 and the second inlet 157 when the other one is closed. The first inlet 156 is in fluid communication with the interior of the dust cup 121. The second inlet 157 is in fluid communication with the dust storage space 21 of the base station 2. The outlet 158 is in fluid communication with the suction port 145 of the suction motor 11. The airflow switcher 15 can be controlled by the controller 19 to switch the air passage, for example, by a motor, a solenoid valve or other devices. The airflow switcher 15 can also be automatically controlled by a mechanical structure. The control of the airflow switcher 15 can be manually controlled by the user, and can also be automatically controlled by a program, which is not limited in detail here. When the handheld dust collector 1 is used alone, the first inlet 156 is in fluid communication with the interior of the dust cup 121, forming a first air passage 171 (see FIG. 4, the arrow direction is the airflow direction), and the airflow generated by the suction motor 11 will flow through the first air passage 171 to clean the surface to be cleaned. When the handheld dust collector 1 is docked to the base station 2, the second inlet 157 can be in fluid communication with the dust storage space 21 of the base station 2, forming a second air passage 172 (see FIG. 3, the arrow direction is the airflow direction), and at this time the first air passage 171 is cut off. At this time, the suction airflow generated by the suction motor 11 of the handheld dust collector 1 flows through the second air passage 172 to empty the dust cup 121 of the handheld dust collector 1, and the dirt in the dust cup 121 is transferred to the dust bag or the separation device of the base station 2. When the handheld dust collector 1 is docked to the base station 2, the airflow switcher 15 can automatically switch the air passage, or can switch the air passage after receiving the self-cleaning instruction. During the process of emptying the dust cup 121, the ash scraping process is also carried out, which can effectively clean the annular filter screen 122 and improve the separation efficiency.

[0081] Referring to FIG. 4, the driving device 14 comprises a motor 141 and a transmission mechanism 142, at least part of the transmission mechanism 142 is arranged above the suction motor 11. In one embodiment, the transmission mechanism 142 comprises a screw rod 143 and a push rod 144 cooperating with the screw rod 143. In other embodiments, the transmission mechanism 142 can adopt one or more of gear transmission, belt transmission or worm gear, which is not described in detail here.

[0082] Referring to Figs. 8-10, the dust scraping mechanism 13 includes a ring-shaped bracket 131, a scraping strip 132 arranged on the ring-shaped bracket 131, and a transmission mechanism 142 which can directly push the ring-shaped bracket 131 to move along the axial direction of the ring-shaped filter screen 122 to scrape off the dirt on the filter screen. Further, the dust scraping mechanism 13 can also include an extension rod 133 and a guide portion 134 connected to the ring-shaped bracket 131, and a guide rod 135 arranged on the dust cup 121, the guide portion 134 being used to move along the guide rod 135 to guide the movement of the ring-shaped bracket 131. The transmission mechanism 142 acts on the extension rod 133 to drive the ring-shaped bracket 131 to move axially through the extension rod 133.

[0083] Referring to Figs. 5-7, the converter mechanism 152 includes a driving rod 153, a connecting rod 154 in transmission connection with the driving rod 153, and a closing plate 155 connected to the connecting rod 154, the driving rod 153 and the connecting rod 154 being located outside the converter housing 151, and the closing plate 155 being located inside the converter housing 151.

[0084] The driving rod 153 is configured to drive the closing plate 155 to open one of the first inlet 156 and the second inlet 157 and to close the other one under the action of an external force. The middle position of the driving rod 153 is pivotally mounted in the cleaner body, one end of the driving rod 153 is pushed, and the other end is rotated to drive the connecting rod 154 to rotate, and the connecting rod 154 drives the closing plate 155 to move.

[0085] Referring to Fig. 11, the handheld cleaner 1 is shown in a horizontal position. In the present embodiment, the upper, lower, front or rear are not particularly the uppermost, lowermost, frontmost or rearmost of a structure, but mainly refer to the positional relationship in the height direction or the horizontal direction. The handheld cleaner 1 further includes a connecting channel 16 for connecting the second inlet 157 and the dust storage space 21 of the base station 2, and when the handheld cleaner 1 is placed horizontally, the connecting channel 16 is located below the converter housing 151, and the driving device 14 is located above the airflow converter 15. In this way, the weight of each component can be effectively distributed, and the volume can be more conveniently arranged.

[0086] Continuing to refer to Fig. 11, when the handheld cleaner 1 is placed horizontally, the airflow converter 15 is located between the suction motor 11 and the dust cup 121. In this way, the air duct is also simplified, and the energy loss in the air duct is reduced. The handheld cleaner 1 further includes a battery pack 17, and when the handheld cleaner 1 is placed horizontally, the connecting channel 16 is at least partially arranged in front of the battery pack 17. In this way, after the connecting channel 16 is connected to the base station 2, it can be directly in fluid communication with the base station 2. The handheld cleaner 1 further includes a handle 173, and when the handheld cleaner 1 is placed horizontally, the handle 173 is arranged behind the suction motor 11.

[0087] Referring to Figs. 12 and 13, in another embodiment, the handheld cleaner 1 adopts another different structural arrangement. In the present embodiment, the upper or lower is not particularly the directly upper or directly lower of one structure, but also can be left lower, left upper, right lower and right upper, etc., mainly refers to the up and down position relationship in the height direction.

[0088] The driving device 14 comprises a motor 141 and a transmission mechanism 142, the motor 141 is arranged below or behind the suction motor 11 when the handheld cleaner 1 is placed horizontally, and the transmission mechanism 142 is arranged below the suction motor 11. The transmission mechanism 142 can adopt the structure described in the above embodiment, which will not be described in detail here. The handheld cleaner 1 further comprises a handle 173, the handle 173 is arranged below the suction motor 11 when the handheld cleaner 1 is placed horizontally, and the driving device 14 is arranged between the suction motor 11 and the handle 173. The handheld cleaner 1 further comprises a connecting channel 16 for connecting the second inlet 157 and the dust storage space 21 of the base station 2, the connecting channel 16 is above the converter housing 151 and the driving device 14 is below the airflow converter 15 when the handheld cleaner 1 is placed horizontally.

[0089] The present application also discloses a control method for controlling a cleaning system 100 (see Figs. 1-10), which is realized by the controller 19. The cleaning system 100 comprises a handheld cleaner 1 and a base station 2, the handheld cleaner 1 is used for cleaning a surface to be cleaned. The handheld cleaner 1 comprises a suction motor 11 for generating a suction airflow and a dust collection assembly 12 for collecting dirt; the dust collection assembly 12 comprises a dust cup 121 and an annular filter screen 122 arranged in the dust cup 121; the handheld cleaner 1 further comprises a dust scraping mechanism 13 for scraping at least part of the dirt on the annular filter screen 122 and a driving device 14 for driving the dust scraping mechanism 13. The base station 2 is used for docking the handheld cleaner 1, the base station 2 comprises a dust storage space 21, the dust storage space 21 comprises a space for accommodating the dirt transferred from the dust cup 121.

[0090] The cleaning system 100 further comprises a first air duct 171 and a second air duct 172, the first air duct 171 is a part of the air duct through which the suction airflow passes when the handheld cleaner 1 cleans the surface to be cleaned. The second air duct 172 is a part of the air duct used for emptying the dust cup 121 after the handheld cleaner 1 is docked to the base station 2; the cleaning system 100 further comprises an airflow converter 15, the airflow converter 15 is configured to close the first air duct 171 and open the second air duct 172 after the handheld cleaner 1 is docked to the base station 2.

[0091] The controller 19 is configured to control the suction motor 11 and the driving device 14. After receiving the self-cleaning instruction, the controller 19 is configured to control the suction motor 11 to run for a preset time to transfer the dirt in the dust cup 121 to the base station 2 through the second air duct 172, and after the suction motor 11 runs for the first preset time, the controller 19 is configured to control the driving device 14 to drive the dusting mechanism 13 to perform the dusting action.

[0092] Before performing the dusting action, the dirt in the dust cup 121 is first emptied, which can prevent the dusting device from being jammed due to too much dirt in the dust cup 121.

[0093] Further, the bottom cover of the dust cup 121 is provided with a rebound mechanism, and when the suction airflow stops, the bottom cover slowly moves from the open state to the closed state under the action of the rebound mechanism. Since the bottom cover of the dust cup 121 needs a certain time to automatically close, in order to prevent the user from taking down the handheld vacuum cleaner 1 after the work of the suction motor 11 is completed, causing the bottom cover of the dust cup 121 to be unable to be closed, affecting normal use, therefore, the controller 19 is configured to control the work end time of the suction motor 11 to be earlier than the work end time of the dusting mechanism 13. When the work of the dusting mechanism 13 ends, the bottom cover of the dust cup 121 has returned to the position to be closed, and when the dust cup 121 leaves the base station 2, the bottom cover at this time can be normally closed.

[0094] In order not to affect normal use, the controller 19 is configured to control the dusting mechanism 13 to return to the dusting end position after the handheld vacuum cleaner 1 leaves the base station 2 during the self-cleaning process. In this way, even if it is mistakenly taken down during the self-cleaning process, the dusting mechanism 13 will automatically reset to avoid affecting the next self-cleaning or normal use.

[0095] Referring to FIGS. 14-21, a vacuum cleaner 1 is disclosed. The vacuum cleaner 1 comprises a main body 1010 and a dust cup assembly arranged on the main body 1010. The main body 1010 comprises a housing 1011 defining a receiving space. A suction motor 11 can be arranged in the receiving space to generate a suction airflow. A battery pack can be mounted on the main body 1010 to supply power to the suction motor 11. A circuit board (controller) can be arranged in the main body 1010 to control the suction motor 11. The above structure is common in the prior art and will not be described in detail here. The dust cup assembly 1020 is detachably mounted on the main body 1010, or the dust cup assembly 1020 cannot be removed from the main body 1010, or only part of the structure of the dust cup assembly 1020 can be removed from the main body 1010, for example: only the filter is removed or only the dust cup housing is removed. A ring-shaped filter screen 122 is arranged in the dust cup. The overall shape of the ring-shaped filter screen 122 is cylindrical. The side surface of the ring-shaped filter screen 122 is covered with filter holes, or only part of the surface of the ring-shaped filter screen 122 is provided with filter holes. The airflow enters the internal space defined by the dust cup housing from the air inlet of the dust cup, and then passes through the ring-shaped filter screen 122 for filtration. The filtered airflow flows out of the dust cup assembly 1020 or enters the next level of filtration structure for further filtration. The specific filtration structure will not be described here. In order to effectively remove the dirt adhering to the outer periphery of the ring-shaped filter screen 122, a dust scraping mechanism 13 is arranged on the outer periphery of the ring-shaped filter screen 122. The dust scraping mechanism 13 is used to scrape at least part of the dirt on the surface of the ring-shaped filter screen 122. The main body 1010 further comprises a driving device 3. The driving device 3 comprises a driver 31 and a transmission mechanism 32. The driver 31 is arranged in the receiving space. The driver 31 can be a motor, or other driving elements that can generate driving force, such as hydraulic drive, which will not be described here. One end of the transmission mechanism 32 is in transmission connection with the driver 31, and the other end of the transmission mechanism 32 acts on the dust scraping mechanism 13. The driver 31 is used to generate driving force to move the dust scraping mechanism 13 along the axial direction of the ring-shaped filter screen 122 from a dust scraping initial position (see FIG. 18) to a dust scraping end position (see FIG. 19) through the transmission mechanism 32. In this application, we will refer to the direction from the dust scraping initial position to the dust scraping end position as the dust scraping direction. The vacuum cleaner 1 comprises a controller. The controller can control the driving device 3 to push the dust scraping mechanism 13. When the user finds that the ring-shaped filter screen 122 is adhered with dirt, the user can control the dust scraping mechanism 13 to automatically scrape the dust through the controller, without the need for manual cleaning by the user. By arranging the driving device 3 in the main body 1010, the dust scraping action of the dust scraping mechanism 13 is realized by controlling the operation of the driver 31, and the dirt on the ring-shaped filter screen 122 is scraped off, avoiding manual cleaning of the ring-shaped filter screen 122 by the user.

[0096] Referring to FIGS. 17-21, the electric motor employed by the drive 31 has an output shaft connected to a transmission mechanism 32, which in one embodiment includes a screw rod 33 in driving connection with the drive 31 and a push rod 34 in driving connection with the screw rod 33, the push rod 34 having a threaded structure at one end thereof matching the screw rod 33, the screw rod 33 being rotated to drive the push rod 34 to move in the direction of the dusting. The drive device 3 further includes at least one limit switch for controlling the stroke of the push rod 34, the limit switch being triggered when the push rod 34 moves to a preset position, the drive 31 being stopped after the limit switch is triggered.

[0097] Referring to FIGS. 18-20, the transmission mechanism 32 includes the push rod 34 configured to abut against the dusting mechanism 13 to push the dusting mechanism 13 to move downward during movement in the direction of the dusting. The push rod 34 can be drivingly connected to the output of the drive 31 by other forms of transmission members. The transmission members can be gears, connecting rods, or other transmission structures. The dusting mechanism 13 includes an annular support 131 and a scraping strip 132 provided on the annular support 131, the scraping strip 132 being used to scrape at least part of the dirt attached to the surface of the annular filter screen 122. The push rod 34 can be configured to directly push the annular support 131 to move downward. The drive device 3 further includes at least one limit switch for controlling the stroke of the push rod 34, the limit switch being triggered when the push rod 34 moves to a preset position, the drive 31 being stopped after the limit switch is triggered. In other embodiments, the transmission mechanism can also employ gear transmission, connecting rod transmission, or belt transmission, or other transmission forms.

[0098] In all the above embodiments, the drive device 3 can be installed into the main body 1010 through the mounting plate 36. The mounting plate 36 can also be provided with guide holes for guiding the movement of the push rod 34.

[0099] On the basis of any of the above embodiments, in order to ensure that the dusting mechanism 13 can move axially along the surface of the annular filter screen 122 and as far as possible without deviation, the dust cup assembly 1020 further includes a guide rod 135 installed on the dust cup assembly 1020 for guiding the dusting mechanism 13 to move in the direction of the dusting.

[0100] Referring to FIGS. 16 and 17, in one embodiment, the dust scraping mechanism 13 includes a ring-shaped bracket 131 and a scraping strip 132 arranged on the ring-shaped bracket 131, the scraping strip 132 being configured to scrape at least part of the dirt attached to the surface of the ring-shaped filter screen 122, the dust scraping mechanism 13 further including a connecting structure fixedly connected to the ring-shaped bracket 131, the connecting structure including an extension rod 133 fixedly connected to the ring-shaped bracket 131 and a guide portion 134 fixedly connected to the extension rod 133; the guide portion 134 is movable along a guide rod 135 arranged on the dust cup assembly 1020 to guide the ring-shaped bracket 131 to move along the guide rod 135 in the dust scraping direction. In the embodiment shown in the figures, the push rod 34 can directly contact the position between the extension rod 133 and the guide portion 134 during the downward movement, which is conducive to the stable movement of the dust scraping mechanism 13.

[0101] In order to facilitate the cleaning of the dust cup assembly 1020, the transmission mechanism 32 and the dust scraping mechanism 13 are not fixedly connected, and when the dust cup assembly 1020 is separated from the main body 1010, the dust scraping mechanism 13 can be separated from the driving device 3, in particular, can be separated from the transmission mechanism 32.

[0102] In order to enable the dust scraping mechanism 13 to smoothly return to the initial position, the guide rod 135 is provided with a rebound structure, the rebound structure being configured to generate a driving force to move the dust scraping mechanism 13 from the dust scraping end position to the dust scraping initial position. In other embodiments, when the dust cup assembly 1020 (the dust scraping mechanism 13) is designed to be non-detachable, the push rod 34 can be fixedly connected to the transmission assembly, so that the rebound structure can be cancelled, and the reciprocating movement of the dust scraping mechanism 13 is driven by the driver 31.

[0103] Referring to FIG. 20, in order to further ensure the stability of the operation of the dust scraping mechanism 13, the extension rod 133 is located inside the circumference defined by the side wall 35 of the dust cup, and the guide rod 135 is arranged outside the circumference defined by the side wall 35 of the dust cup.

[0104] Referring to FIG. 1, a cleaning system 100 is disclosed, which comprises a cleaner 1 and a base station 2 to which the cleaner 1 is docked. The base station 2 comprises a dust storage space for storing dirt transferred from the dust cup assembly 1020. The base station 2 can comprise a fan for generating suction to transfer dirt in the dust cup assembly 1020 to the dust storage space, or can not comprise a fan, and dirt in the dust cup assembly 1020 can be transferred to the dust storage space by airflow generated by the suction motor 11 on the cleaner 1, and the specific structure is not described here. The cleaning system 100 further comprises a controller, which can be arranged in the base station 2 or in the cleaner 1. The controller is configured to control the driving device 3 to be driven only after the cleaner 1 is docked to the base station 2. Specifically, when the controller receives or detects a charging signal, the controller is activated and can control the driving device 3. Alternatively, after the cleaner 1 is docked to the base station 2, a switch device is triggered, and after the switch device is activated, the controller can control the driving device 3.

[0105] Referring to FIG. 1, a cleaning system 100 is disclosed, which comprises a cleaner 1 and a base station 2. The cleaner 1 is used to clean a surface to be cleaned. The cleaner 1 comprises a suction motor 11 for generating a suction airflow and a dust cup 121 for storing dirt. The suction airflow recovers dirt on the surface to be cleaned into the dust cup 121. The cleaner 1 can be a handheld cleaner, an upright cleaner, a canister cleaner or a robotic cleaner, which is only used as an example and is not limited. The base station 2 is used to dock the cleaner 1, and the base station 2 comprises a dust storage space 21 for accommodating dirt transferred from the dust cup 121. The dust storage space 21 can be provided with a dust bag, and can also be provided with a container with a separation device.

[0106] Referring to Figs. 22-33, the cleaning system 100 is described in detail with the example of the handheld cleaner in the embodiments shown in the figures. In this embodiment, the blower is not provided in the base station 2, and the dirt in the dust cup 121 is transferred to the dust storage space 21 in the base station 2, which needs to be achieved by the airflow generated by the suction motor 11. In order to achieve the above function, the upstream of the suction port 111 of the suction motor 11 is provided with a three-way structure 1030, which includes a first air inlet 1031, a second air inlet 1032 and an air outlet 1033. The first air inlet 1031 is in fluid communication with the dust cup 121, forming a first air duct (see Fig. 31, the arrow direction in the figure is the direction of the airflow), which is the suction air duct of the cleaner 1 when it is used alone, in order to clean the surface to be cleaned. The second air inlet 1032 is in fluid communication with the dust storage space 21, forming a second air duct (see Figs. 32 and 33, the arrow direction in the figure is the direction of the airflow), which is the air duct through which the airflow generated by the suction motor 11 is conducted when the cleaner 1 is docked to the base station 2, so as to generate negative pressure in the dust storage space 21 in the base station 2, and then transfer the dirt in the dust cup 121 to the base station 2. Only one of the first air duct and the second air duct can be conducted. The air outlet 1033 is in fluid communication with the suction port 111. When the cleaner 1 is docked to the base station 2, the first air duct is cut off, and the second air duct is conducted. The base station 2 includes a first docking area 22, in which a passage 26 for connecting the second air inlet 1032 and the dust storage space 21 is provided. The base station 2 includes a second docking area 23 for docking the dust cup 121, and the bottom cover of the dust cup 121 can be opened to connect the dust cup 121 and the dust storage space 21 of the base station 2. In order to make the airflow generated by the suction motor 11 change direction, the cleaner 1 further includes an air duct switching assembly 104. The air duct switching assembly 104 is configured to close the first air inlet 1031 when the cleaner 1 is docked to the base station 2, while opening the second air inlet 1032, at which time the second air duct is conducted. The first air inlet 1031 is opened while the second air inlet 1032 is closed when the cleaner 1 leaves the base station 2, at which time the first air duct is conducted. In this way, when the cleaner 1 is docked to the base station 2, the two air ducts are switched with each other without the need for manual operation or the need to provide additional components to control the air duct switching assembly 104.

[0107] Referring to Figs. 24-30, in one embodiment, the air duct switching assembly 104 includes a first link 1041, a second link 1042 in driving connection with the first link 1041, and a closure structure 1043 connected with the second link 1042. The first link 1041 rotates to drive the second link 1042, so that the second link 1042 drives the closure structure 1043 to close the first air inlet 1031 or the second air inlet 1032. The driving end 147 of the second link 1042 is in driving connection with the linkage end 146, and the fixed end 148 of the second link 1042 is fixedly connected with the closure structure 1043, so that the second link 1042 drives the closure structure 1043 to rotate about the second pivot structure 149; wherein the linkage end 146 rotates about the first pivot structure 1044 to drive the second link 1042 to rotate about the second pivot structure 149.

[0108] Referring to Fig. 28, the first air duct is in the closed state, and the second air duct is in the open state. Referring to Fig. 11, the first air duct is in the open state, and the second air duct is in the closed state.

[0109] Referring to Fig. 30, the three-way structure 1030 includes a housing defining a cavity, and the closure structure 1043 is disposed in the cavity. The closure structure 1043 includes a rotating arm 1056 and a closure plate 1057 connected with the rotating arm 1056. The closure plate 1057 is rotatable in the cavity, and the rotating arm 1056 is fixedly connected with the second link 1042. When the second link 1042 rotates, the rotating arm 1056 rotates with the second link 1042, and the closure plate 1057 rotates with the rotating arm 1056 to switch the air duct. The first link 1041 is installed in the dust collector 1 through the first pivot structure 1044, and the first link 1041 includes the abutting end 1045 and the linkage end 146 located at two ends of the first pivot structure 1044, respectively. Referring to Figs. 27 and 30, in one embodiment, one of the linkage end 146 and the driving end 147 is provided with a groove 1051, and the other is provided with a slider 1052 slidable along the groove 1051. In other embodiments, the air duct switching assembly 104 can also be in other forms of structures.

[0110] To achieve that the air duct switching assembly 104 automatically switches the second air duct to the first air duct after the cleaner 1 leaves the base station 2, the air duct switching assembly 104 further comprises a reset structure (not shown in the figures). The reset structure is configured to move the closing structure 1043 from the position closing the first air inlet 1031 to the position closing the second air inlet 1032 and keep it in this position after the cleaner 1 leaves the base station 2. The reset structure can be a spring, one end of which is fixed on the first link 1041 and the other end of which is fixed in the cleaner 1. The reset structure can also be a torsion spring, which is arranged at the first pivot structure 1044. The reset of the air duct switching assembly 104 is achieved by the elastic force of the spring or the torsion spring.

[0111] Referring to Fig. 33, the cleaner 1 further comprises an air inlet channel 1053 arranged at the second air inlet 1032, which is used to be in fluid communication with the channel of the base station 2.

[0112] Referring to Figs. 22 and 23, in one embodiment, the base station 2 is provided with a push rod structure 25, which is configured to push the first link 1041 after the cleaner 1 is docked to the base station 2. The air duct switching assembly 104 is generally arranged inside the cleaner 1, and when the cleaner 1 is docked to the base station 2, the push rod structure 25 extends into the guide hole of the cleaner 1 to push the first link 1041. The first docking area 22 of the base station 2 is further provided with a charging structure 24 and a pushing structure for pushing the first link 1041. Arranging the charging structure 24, the pushing structure and the like in one area can save space and also play a positioning role, which is convenient for the user to dock the cleaner 1 to the base station 2.

[0113] Although the embodiments of the present application have been disclosed as above, they are not limited to the applications listed in the specification and the embodiments, and can be fully applied to various fields suitable for the present application, and additional modifications can be easily realized by those skilled in the art, and therefore the present application is not limited to specific details and the figures shown and described herein, without departing from the general concept defined by the claims and the equivalent scope.

Claims

1. A vacuum cleaner characterised in that, The dust cup assembly is mounted on the main body, and a ring-shaped filter screen is arranged in the dust cup. An outer periphery of the ring-shaped filter screen is provided with a dust scraping mechanism. The dust scraping mechanism is used to scrape at least part of the dirt on the surface of the ring-shaped filter screen.

2. The dust collector according to claim 1, wherein the transmission mechanism comprises a screw rod in transmission connection with the driving device and a push rod in transmission connection with the screw rod. The screw rod rotates to drive the push rod to move in the dust scraping direction.

3. The dust collector according to claim 1, wherein the transmission mechanism comprises a push rod configured to abut against the dust scraping mechanism to push the dust scraping mechanism to move downward during movement in the dust scraping direction.

4. The dust collector according to claim 3, wherein the dust cup assembly further comprises a guide rod mounted on the dust cup assembly and used to guide the dust scraping mechanism to move in the dust scraping direction.

5. The dust collector according to claim 3, wherein the dust scraping mechanism comprises a ring-shaped support and a scraping strip arranged on the ring-shaped support. The scraping strip is used to scrape at least part of the dirt adhered to the surface of the ring-shaped filter screen. The dust scraping mechanism further comprises a connecting structure fixedly connected with the ring-shaped support. The connecting structure comprises an extension rod fixedly connected with the ring-shaped support and a guide portion fixedly connected with the extension rod. The guide portion is reciprocally movable along the guide rod mounted on the dust cup assembly to guide the ring-shaped support to move in the dust scraping direction along the guide rod.

6. The dust collector according to claim 5, wherein the extension rod is located inside a circle defined by a side wall of the dust cup, and the guide rod is arranged outside the circle defined by the side wall of the dust cup.

7. The dust collector according to any one of claims 1-5, wherein the dust scraping mechanism is separable from the driving device when the dust cup assembly is separated from the main body. The handheld dust collector is used to clean a surface to be cleaned. The handheld dust collector comprises a suction motor used to generate a suction airflow and a dust collection assembly used to collect dirt. The dust collection assembly comprises a dust cup and a ring-shaped filter screen arranged in the dust cup. The handheld dust collector further comprises a dust scraping mechanism used to scrape at least part of the dirt on the ring-shaped filter screen and a driving device used to drive the dust scraping mechanism. The base station is used to dock the handheld dust collector. The base station comprises a dust storage space. The dust storage space comprises a space used to accommodate the dirt transferred from the dust cup. ​ ​ ​ ​ ​ ​ ​ 8. A cleaning system characterized by, ​ ​ ​ The handheld dust collector further comprises an airflow switcher, the airflow switcher comprising a switcher housing and a switcher mechanism, the switcher housing defining a first inlet, a second inlet and an outlet; the switcher mechanism being configured to open one of the first inlet and the second inlet while closing the other one; the first inlet being in fluid communication with the interior of the dust cup, the second inlet being in fluid communication with the dust storage space of the base station; the outlet being in fluid communication with the suction port of the suction motor.

9. The cleaning system of claim 8, wherein, The handheld dust collector further comprises a connecting channel for connecting the second inlet and the dust storage space of the base station, the connecting channel being located below the switcher housing and the driving device being located above the airflow switcher when the handheld dust collector is placed horizontally.

10. The cleaning system of claim 8, wherein, The airflow switcher is located between the suction motor and the dust cup when the handheld dust collector is placed horizontally.

11. The cleaning system of claim 9, wherein, The handheld dust collector further comprises a battery pack, the connecting channel being at least partially located in front of the battery pack when the handheld dust collector is placed horizontally.

12. The cleaning system of claim 8, wherein, The driving device comprises a motor and a transmission mechanism, at least part of the transmission mechanism being located above the suction motor.

13. The cleaning system of claim 8, wherein, The switcher mechanism comprises a driving rod, a connecting rod in transmission connection with the driving rod and a closing plate connected with the connecting rod, the driving rod and the connecting rod being located outside the switcher housing and the closing plate being located inside the switcher housing.

14. The cleaning system of claim 13, wherein, The driving rod is configured to drive the closing plate to open one of the first inlet and the second inlet while closing the other one by the connecting rod under the action of an external force.

15. The cleaning system of claim 8, wherein, The driving device comprises a motor and a transmission mechanism, the motor being located below or behind the suction motor and the transmission mechanism being located below the suction motor when the handheld dust collector is placed horizontally.

16. The cleaning system of claim 8, wherein, The handheld dust collector further comprises a connecting channel for connecting the second inlet and the dust storage space of the base station, the connecting channel being located above the switcher housing and the driving device being located below the airflow switcher when the handheld dust collector is placed horizontally.

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