Cleaning apparatus and dust collecting method

Abstract

A cleaning apparatus (100) and a dust collecting method, relating to the technical field of cleaning. The cleaning apparatus (100) comprises a dust suction assembly (10), a dust collecting assembly (20), and a first suction power source (31). The dust suction assembly (10) comprises a dust cup (11), the dust cup (11) comprises a cup body (111) and a cover body (112) movably connected to the cup body (111), and the cup body (111) and the cover body (112) define a first dust collecting chamber (101). The dust collecting assembly (20) comprises a second dust collecting chamber (201). The first suction power source (31) is disposed on the dust suction assembly (10) or the dust collecting assembly (20) for forming a negative pressure in the second dust collecting chamber (201), and the cover body (112) is configured to be opened relative to the cup body (111) under the trigger by the negative pressure, so that the first dust collecting chamber (101) comes into communication with the second dust collecting chamber (201). The cleaning apparatus (100) has a dust collecting stage, and in the dust collecting stage, the dust cup (11) is docked with the second dust collecting chamber (201). A gas in the second dust collecting chamber (201) is pumped out by means of the first suction power source (31), so that the negative pressure is formed in the second dust collecting chamber (201), the cover body (112) is opened under the action of gas pressure in the first dust collecting chamber (101), and an airflow can drive dust in the first dust collecting chamber (101) to completely enter the second dust collecting chamber (201), thereby improving the dust collecting efficiency.

Description

Cleaning device and dust collection method

[0001] Related applications

[0002] This application claims priority to Chinese patent application No. 2023112232846, filed on September 20, 2023, entitled “Cleaning Device and Dust Collection Method”;

[0003] This application also claims priority to Chinese patent application No. 2024112844762, filed on September 12, 2024, entitled “Cleaning Device and Dust Collection Method”;

[0004] The entire text of which is incorporated herein by reference. Technical Field

[0005] The present application relates to the field of cleaning technology, and in particular to a cleaning device and a dust collection method. Background Art

[0006] The cleaning device can draw dust and trash from the floor into its dust cup by sucking air, keeping the floor clean. The cleaning device is equipped with a dust collection station to collect the dust and other trash in the dust cup. In related art, when the cleaning device is placed on the dust collection station, the top rod or bump on the dust collection station opens the bottom cover of the dust cup, allowing the dust in the dust cup to fall freely into the dust collection station. However, this process has the problem that the dust and trash in the dust cup cannot completely enter the dust collection station.

[0007] Summary of the Invention

[0008] Based on this, it is necessary to provide a cleaning device so that the dust and garbage in the dust cup can be completely discharged.

[0009] A cleaning device, comprising a dust suction component, a dust collecting component and a first suction power source; the dust suction component comprises a dust cup, the dust cup comprises a cup body and a cover body movably connected to the cup body, the cup body and the cover body are arranged to form a first dust collecting chamber; the dust collecting component comprises a second dust collecting chamber; the first suction power source is arranged in the dust suction component or the dust collecting component, and is used to form a negative pressure in the second dust collecting chamber, and the cover body is configured to open relative to the cup body when triggered by the negative pressure, so that the first dust collecting chamber and the second dust collecting chamber are connected; wherein, the cleaning device has a dust collecting stage, and in the dust collecting stage, the dust cup is docked to the second dust collecting chamber.

[0010] It is understandable that the setting of the first dust collecting chamber facilitates the collection of dust and garbage when the cleaning device is performing vacuum cleaning; the setting of the second dust collecting chamber facilitates the collection of dust and garbage in the first dust collecting chamber, so that when the cleaning device performs subsequent cleaning, the first dust collecting chamber can continue to normally accommodate dust and garbage. During the dust collection process of the second dust collecting chamber, the first suction power source can extract the gas in the second dust collecting chamber, so that the air pressure in the second dust collecting chamber is lower than the air pressure in the first dust collecting chamber. The cover is opened under the action of the air pressure in the first dust collecting chamber, and the gas in the first dust collecting chamber will be concentrated and flow into the second dust collecting chamber. The larger air pressure can drive the dust and garbage in the first dust collecting chamber completely into the second dust collecting chamber, so that the dust and garbage in the dust cup are completely discharged, which is conducive to improving the dust collection efficiency.

[0011] In one embodiment, along the radial direction of the dust cup, the cover body has a first end and a second end that are relatively arranged, the first end is movably connected to the cup body, and the second end can be opened relative to the cup body when triggered by the negative pressure.

[0012] It can be understood that under the action of the air pressure in the first dust collecting chamber, the second end opens relative to the cup body, and the first end of the cover body is movably connected to the cup body to maintain connection with the cup body, so as to facilitate the subsequent continued connection of the second end to the cup body.

[0013] In one embodiment, the first end is rotatably connected to the cup body, the second end is snap-connected to the cup body, and the second end is configured to unlock from the cup body in response to the pressure difference between the first dust collecting chamber and the second dust collecting chamber reaching a first pressure difference.

[0014] It is understandable that the buckle connection is easy to unlock, and the air pressure in the first dust collection chamber acts on the buckle connection to break the lock formed by the buckle. At the same time, the buckle connection is also easy to buckle back after unlocking, which is easy to operate.

[0015] In one embodiment, the dust collection assembly includes a locking structure, which is rotatably connected to the cup body. The locking structure includes an elastic portion and a first abutting portion that are spaced apart. The elastic portion and the first abutting portion are arranged at both ends of the locking structure rotating shaft. The elastic portion is elastically connected to the cup body, and the first abutting portion is snap-connected to the cover body.

[0016] It is understood that a locking structure is provided to facilitate a snap-on connection. The first abutting portion can be tightly engaged with the cover under the elastic force of the elastic portion, effectively limiting and locking the cover. Under the action of negative pressure, the first abutting portion is unlocked from the cover. Simultaneously, when there is no air pressure, the elastic portion can reposition the first abutting portion through its elastic force, thereby relocking the cover.

[0017] In one embodiment, the first abutting portion is configured with an abutting surface, and the cup body is radially and axially angled to the abutting surface respectively; the cover body is configured with a mating surface, and the mating surface can be fitted onto the abutting surface to form a lock, and the abutting surface is configured to rotate around the rotating axis to move away from the mating surface in response to the first pressure difference.

[0018] It is understandable that the mechanical limit is formed by the contact surface and the matching surface being in contact with each other, which is effective and reliable. In addition, the contact surface rotates around the rotation axis under the action of the first air pressure to unlock the cover body, which is easy to operate.

[0019] In one embodiment, in the dust collecting section, the air inlet is configured to open in response to the opening of the cover, and the air inlet can be communicated with the first dust collecting chamber and the second dust collecting chamber.

[0020] It is understood that before the lid is opened, the air inlet is closed to allow the first suction power source to extract air from the second dust collection chamber to form a negative pressure. After the lid is opened, the air inlet is also opened to allow the first suction power source to draw external air through the air inlet. The external air passes through the bottom of the first dust collection chamber and further brings dust into the second dust collection chamber, further improving dust collection efficiency.

[0021] In one embodiment, the first suction power source is provided in the dust collection component; the dust collection component further includes a first air duct and a second air duct, the first air duct is located inside the dust cup, and the second air duct is located outside the dust cup; the cleaning device has a dust collection stage and a dust collection stage; in the dust collection stage, the air inlet of the dust collection component, the first air duct, the first suction power source and the first air outlet are connected; in the dust collection stage, the second dust collecting chamber, the second air duct, the first suction power source and the first air outlet are connected.

[0022] It is understandable that two different air ducts are provided to meet the needs under different working conditions. Specifically, under the working conditions of the dust collection stage, the first suction power source can suck the external air through the air inlet. After the external air passes through the first air duct, the dust in the air falls into the dust cup. After the gas and dust are separated, they are discharged from the first air outlet through the first suction power source. In the dust collection stage, the first suction power source can extract the gas in the second dust collecting chamber through the second air duct to form a negative pressure. The gas in the second dust collecting chamber passes through the second air duct and the first suction power source and is discharged from the air outlet of the cleaning device.

[0023] In one embodiment, the dust collection component includes an air duct switching component, which is installed between the first air duct and the second air duct, and the air duct switching component is used to switch one of the first air duct and the second air duct to open and the other to close.

[0024] It can be understood that, by setting up an air duct switching component to switch the first air duct and the second air duct, the requirements for different air ducts in the dust suction stage and the dust collection stage can be met.

[0025] In one embodiment, the air duct switching assembly includes a rotating cover plate, which has a rotating axis. Along the radial direction of the rotating axis, the portion located on one side of the rotating axis is defined as a first blocking portion, and the other side is defined as a second blocking portion; the first blocking portion is used to block the first air duct, and the second blocking portion is used to block the second air duct, and the rotating cover plate switches the first blocking portion or the second blocking portion for blocking by rotating around the rotating axis.

[0026] It can be understood that by rotating the cover plate around the rotation axis, the first blocking portion can be switched to block the first air duct, at which point the second air duct is opened to facilitate dust collection; and by switching the second blocking portion to block the second air duct, at which point the first air duct is opened to facilitate dust collection. This arrangement is structurally simple and easy to switch.

[0027] In one embodiment, the cleaning device includes a cyclone separation structure, which is installed in a dust cup. The inner cavity of the cyclone separation structure is connected to the dust cup and forms the first air duct; the channel between the dust cup and the air inlet of the dust suction component forms the second air duct.

[0028] It can be understood that the inner cavity of the cyclone separation structure can form a first air duct to facilitate the passage of gas. At the same time, the cyclone separation structure can separate the dust in the gas from the gas and make the dust fall into the dust cup.

[0029] In one embodiment, the air duct switching assembly includes a first elastic member, which is installed between the first blocking portion and the cyclone separation structure; the air duct switching assembly also includes a top contact member, one end of which is connected to the second blocking portion; the first elastic member is configured to lift up the first blocking portion in response to the separation of the dust suction assembly and the dust collecting assembly; the top contact member is configured to lift up the second blocking portion in response to the docking of the dust suction assembly and the dust collecting assembly.

[0030] It can be understood that the first elastic member has an elastic effect on the first blocking portion. During the dust suction stage, the dust suction component and the dust collecting component, the first elastic member can push up the first blocking portion through its own elastic force to realize the opening of the first air duct. At this time, the second blocking portion blocks the second air duct downward; after the dust suction component and the dust collecting component are docked, the top contact member pushes up the second blocking portion to open the second air duct. At this time, the first blocking portion has a downward pressure on the first elastic member, thereby blocking the first air duct.

[0031] In one embodiment, the dust collecting assembly is further provided with a second abutting portion, and in the dust collecting stage, the second abutting portion abuts against the top contact member.

[0032] It can be understood that the arrangement of the second abutting portion enables the second abutting portion to push the top contact piece upward when the dust suction component is docked with the dust collecting component, thereby pushing up the second blocking portion and opening the second air duct.

[0033] In one embodiment, the first suction power source is provided in the dust collecting assembly, and the first suction power source is communicated with the second air outlet.

[0034] It can be understood that this arrangement allows the first suction power source to directly extract the gas in the second dust collecting chamber, which is easy to operate.

[0035] The present application also provides a dust collection method, which is applied to the above-mentioned cleaning device; the dust collection method includes: docking the dust collecting component with the dust suction component; a first suction power source sucks the gas in the second dust collecting chamber of the dust collecting component to form a negative pressure in the second dust collecting chamber; the cover body is opened when triggered by the negative pressure, and the first dust collecting chamber and the second dust collecting chamber are connected.

[0036] It can be understood that by sucking the gas from the second dust collecting chamber to form a negative pressure in the second dust collecting chamber, the cover is opened by the negative pressure, and the gas in the first dust collecting chamber will drive dust and garbage into the second dust collecting chamber, so as to improve the dust collection efficiency.

[0037] In one embodiment, the first suction power source sucks the gas in the second dust collecting chamber of the dust collecting component to form a negative pressure in the second dust collecting chamber, including: forming a pressure difference between the first dust collecting chamber and the second dust collecting chamber of the dust suction component, and the gas pressure in the first dust collecting chamber is greater than the gas pressure in the second dust collecting chamber; the cover body is opened when triggered by the negative pressure, including: when the pressure difference between the first dust collecting chamber and the second dust collecting chamber reaches a first pressure difference, the cover body is opened.

[0038] It can be understood that when the pressure difference between the first dust collecting chamber and the second dust collecting chamber reaches the first pressure difference, there is a sufficiently large air pressure in the first dust collecting chamber to push the cover to open, so that there is sufficient impact force to bring the dirt in the first dust collecting chamber into the second dust collecting chamber, so that no dust and garbage is left in the first dust collecting chamber, thereby improving the dust collection efficiency.

[0039] In one embodiment, the dust collection method further includes: before the cover is opened, the air inlet of the dust collection assembly is closed; after the cover is opened, the air inlet is opened, and the air inlet is connected to the first dust collecting chamber and the second dust collecting chamber.

[0040] It can be understood that with such an arrangement, after the cover is opened, external air can be sucked in through the air inlet, and the external air enters the second dust collecting chamber and passes through the bottom of the first dust collecting chamber, and can bring the dust and garbage at the bottom of the first dust collecting chamber into the second dust collecting chamber to promote the dust collection efficiency.

[0041] The present application also provides a dust collection method, which is applied to a cleaning device, wherein the cleaning device is provided with a first dust collecting chamber and a second dust collecting chamber that can be selectively connected, and the cleaning device includes a dust cup, which forms the first dust collecting chamber. The dust collection method includes: sucking gas in the second dust collecting chamber to form a negative pressure in the second dust collecting chamber; the cover of the dust cup is opened under the negative pressure, and the first dust collecting chamber and the second dust collecting chamber are connected.

[0042] It can be understood that by sucking the gas from the second dust collecting chamber to form a negative pressure in the second dust collecting chamber, the cover is opened by the negative pressure, and the gas in the first dust collecting chamber will drive dust and garbage into the second dust collecting chamber, so as to improve the dust collection efficiency.

[0043] In one embodiment, the sucking of gas from the second dust collecting chamber to form a negative pressure in the second dust collecting chamber includes: forming a pressure difference between the first dust collecting chamber and the second dust collecting chamber, and the gas pressure in the first dust collecting chamber is greater than the gas pressure in the second dust collecting chamber; the cover of the dust cup is opened under the negative pressure, including: when the pressure difference between the first dust collecting chamber and the second dust collecting chamber reaches a first pressure difference, the cover is opened.

[0044] It can be understood that when the pressure difference between the first dust collecting chamber and the second dust collecting chamber reaches the first pressure difference, there is a sufficiently large air pressure in the first dust collecting chamber to push the cover to open, so that there is sufficient impact force to bring the dirt in the first dust collecting chamber into the second dust collecting chamber, so that no dust and garbage is left in the first dust collecting chamber, thereby improving the dust collection efficiency.

[0045] In one embodiment, the cleaning device is provided with an air inlet connected to the first dust collecting chamber, and the dust collection method further includes: before the cover body is opened, the air inlet of the dust suction component is closed; after the cover body is opened, the air inlet is opened, and the air inlet is connected to the first dust collecting chamber and the second dust collecting chamber.

[0046] It can be understood that with such an arrangement, after the cover is opened, external air can be sucked in through the air inlet, and the external air enters the second dust collecting chamber and passes through the bottom of the first dust collecting chamber, and can bring the dust and garbage at the bottom of the first dust collecting chamber into the second dust collecting chamber to promote the dust collection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the conventional technology, the following briefly introduces the drawings required for use in the embodiments or the conventional technology descriptions. Obviously, the drawings described below are merely embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the disclosed drawings without any creative work.

[0048] FIG1 is a schematic structural diagram of a cleaning device provided in the present application in Example 1;

[0049] FIG2 is a cross-sectional view of a dust collection assembly of a cleaning device provided by the present application under a first embodiment;

[0050] FIG3 is a partial enlarged view of point A in FIG2 ;

[0051] FIG4 is a partial cross-sectional view of the air duct switching assembly in FIG2 ;

[0052] FIG5 is a cross-sectional view of the dust collection assembly of the cleaning device provided by the present application in another embodiment of the present invention;

[0053] FIG6 is a partial cross-sectional view of the air duct switching assembly in FIG5 ;

[0054] FIG7 is a cross-sectional view of the dust collecting assembly in the first embodiment of the cleaning device provided in the present application;

[0055] FIG8 is a schematic structural diagram of the cleaning device provided in the second embodiment of the present application;

[0056] FIG9 is a schematic structural diagram of the cleaning device provided in Example 3 of the present application;

[0057] FIG10 is a cross-sectional view of the dust collection component of the cleaning device provided in the third embodiment of the present application.

[0058] Reference numerals: 100, cleaning device; 1001, first air duct; 1002, second air duct; 1003, air inlet; 1004, first air outlet; 1005, second air outlet; 1006, return air duct; 1007, air inlet duct; 1008, third air duct; 10, dust collection assembly; 11, dust cup; 101, first dust collecting chamber; 111, cup body; 112, cover body; 1121, first end; 1122, second end; 11221, mating surface; 12, cyclone separation structure; 13, filter cotton; 20, dust collection assembly; 21, second abutting portion; 22, dust collection shell; 23, dust collection bag; 24, dust collection body; 241. Collection chamber; 25. Connecting pipe; 201. Second dust collecting chamber; 202. Cavity opening; 31. First suction power source; 32. Second suction power source; 40. Air duct switching assembly; 41. Rotating cover; 411. Rotating shaft; 412. First blocking portion; 413. Second blocking portion; 42. Second elastic member; 43. Top contact member; 50. Locking structure; 51. First abutting portion; 511. Abutting surface; 52. Elastic portion; 521. First elastic member; 522. Connecting surface; 53. Rotating shaft; 61. First shielding structure; 62. Second shielding structure; 63. Sealing plate; 601. First flow port; 602. Second flow port. DETAILED DESCRIPTION

[0059] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0060] Please refer to Figures 1 to 10. The present application provides a cleaning device 100, which includes a dust suction component 10, a dust collecting component 20 and a first suction power source 31; the dust suction component 10 includes a dust cup 11, the dust cup 11 includes a cup body 111 and a cover body 112 movably connected to the cup body 111, the cup body 111 and the cover body 112 are arranged to form a first dust collecting chamber 101; the dust collecting component 20 includes a second dust collecting chamber 201; the first suction power source 31 is arranged in the dust suction component 10 or the dust collecting component 20, and is used to form a negative pressure in the second dust collecting chamber 201, and the cover body 112 is configured to open relative to the cup body 111 under the triggering of negative pressure to connect the first dust collecting chamber 101 and the second dust collecting chamber 201; wherein, the cleaning device 100 has a dust collecting stage, and in the dust collecting stage, the dust cup 11 is docked with the second dust collecting chamber 201. Specifically, the second dust collecting chamber 201 has a cavity opening 202 , and the dust cup 11 is connected to the second dust collecting chamber 201 through the cavity opening 202 .

[0061] In this way, the dust collection assembly 10 can draw dust-laden air into the first dust collection chamber 101, separate the dust and air in the first dust collection chamber 101, allow the clean air to exit the dust collection assembly 10, and collect the dust in the dust cup 11. Next, the dust collection assembly 10 is docked with the dust collection assembly 20, and the cleaning device 100 starts the dust collection phase. The first suction power source 31 can extract the air from the second dust collection chamber 201, making the air pressure in the second dust collection chamber 201 lower than the air pressure in the first dust collection chamber 101, thereby forming a pressure differential, and thereby causing the air in the first dust collection chamber 101 to exert a strong force on the cover 112. When the pressure differential reaches a certain value, the air pressure in the first dust collection chamber 101 causes the cover 112 to open, and the air rushes out of the first dust collection chamber 101 and can drive the dust into the second dust collection chamber 201. That is, by forming a negative pressure, the dust can be taken out at the same time as the cover 112 is opened, which can reduce the number of structures for opening the cover 112 and make the overall structure simpler. During this process, the gas in the first dust collecting chamber 101 has a concentrated and high gas pressure, which can completely carry the dust into the second dust collecting chamber 201, thereby achieving a better dust collection effect. In addition, the gas in the first dust collecting chamber 101 is concentrated and rushed into the second dust collecting chamber 201, which can reduce the turbulence and dust generated during the process of the gas entering the second dust collecting chamber 201, thereby improving the dust collection efficiency.

[0062] In the embodiment of the present application, the pressure difference between the first dust collecting chamber 101 and the second dust collecting chamber 201 improves the dust collecting efficiency and enables the cover 112 to open automatically, so the relevant structure of the cover 112 is first described.

[0063] As shown in Figures 2 and 3, in an optional embodiment, along the radial direction of the dust cup 11, the cover body 112 has a first end 1121 and a second end 1122 that are relatively arranged. The first end 1121 is movably connected to the cup body 111, and the second end 1122 can be opened relative to the cup body 111 when triggered by negative pressure. In this way, the air pressure of the first dust collecting chamber 101 can make the second end 1122 relatively away from the cup body 111, so that the cover body 112 automatically opens without the cooperation of other structures. After the cover body 112 is opened, the first end 1121 can always remain connected to the cup body 111, so that after the dust collection is completed, it is only necessary to reconnect the second end 1122 to the cup body 111 to achieve the sealing of the cover body 112 relative to the cup body 111, so that the dust collection work can be carried out again.

[0064] As shown in Figures 2 and 3, in a further embodiment, the first end 1121 is rotatably connected to the cup body 111, the second end 1122 is snap-connected to the cup body 111, and the second end 1122 is configured to unlock from the cup body 111 in response to the pressure difference between the first dust collecting chamber 101 and the second dust collecting chamber 201 reaching a first pressure difference.

[0065] In this way, the cup body 111 is connected to the cover body 112 through a snap-fit ​​connection to limit the locking, which is simple to operate and can be easily unlocked by air pressure. Specifically, when the pressure difference between the first dust collecting chamber 101 and the second dust collecting chamber 201 reaches the first pressure difference, the first dust collecting chamber 101 has sufficient air pressure to push the cover body 112, so that the second end 1122 of the cover body 112 gradually separates from the cup body 111 under the action of air pressure, thereby unlocking the snap-fit ​​connection. The entire cover body 112 opens relative to the cup body 111, and the cover body 112 rotates around the rotating axis of the first end 1121. After dust collection is completed, the dust collection assembly 10 is separated from the dust collection assembly 20, and the second end 1122 of the cover body 112 can be manually rotated toward the cup body 111 and, under the action of external force, once again achieves a snap-fit ​​connection with the cup body 111. In other embodiments, a pressure sensor may be installed in the dust cup 11. When the pressure sensor senses that the air pressure in the first dust collecting chamber 101 reaches a predetermined value, the cover 112 and the cup 111 may be unlocked.

[0066] In some embodiments, when the pressure difference between the first dust collecting chamber 101 and the second dust collecting chamber 201 is set to 4 kPa, the gas in the first dust collecting chamber 101 has sufficient gas pressure to open the cover 112. In other embodiments, the corresponding pressure difference value can also be set according to the conditions for opening the cover 112, which is not specifically limited here. Furthermore, the first suction power source 31 can perform multiple suctions on the gas in the second dust collecting chamber 201 to gradually reach an ideal pressure difference value. Exemplarily, after the first suction power source 31 is turned on and operated for a first time, the first suction power source 31 enters a standby state. After the second standby time, the first suction power source 31 continues to suck and continues for the first time, and so on, until the power-on and standby actions are repeated n times and then end. Wherein, n≥2, n is an integer, for example, n can be set to 2, 3 or 4, as long as the set pressure difference value is met.

[0067] As shown in Figures 2 and 3, in a specific embodiment, the dust collection assembly 10 includes a locking structure 50, which is rotatably connected to the cup body 111. The locking structure 50 includes an elastic portion 52 and a first abutting portion 51 that are spaced apart. The elastic portion 52 and the first abutting portion 51 are respectively arranged at both ends of the rotating shaft 53 of the locking structure 50. The elastic portion 52 is elastically connected to the cup body 111, and the first abutting portion 51 is snap-connected to the cover body 112.

[0068] In this way, by installing the locking structure 50 on the cup body 111, a snap connection with the cover body 112 is achieved, which is easy to operate. Among them, the locking structure 50 can switch between unlocking and locking the cover body 112 by rotating around the rotating shaft 53. The elastic part 52 moves away from the cup body 111 under the action of the elastic force. Since the elastic part 52 and the first abutting part 51 are respectively arranged at both ends of the rotating shaft 53, at this time, the first abutting part 51 approaches the cover body 112 under the action of the elastic force of the elastic part 52, so as to abut against the cover body 112 to achieve locking of the cover body 112; under the action of the air pressure in the first dust collecting chamber 101, the first abutting part 51 can rotate around the circumference of the rotating shaft 53 toward the side away from the cover body 112. At this time, the elastic part 52 has a reverse elastic force, that is, the elastic part 52 has a tendency to rebound. After the air pressure disappears, the elastic force of the elastic part 52 is released to reset the first abutting part 51.

[0069] As shown in Figures 2 and 3, specifically, the elastic portion 52 includes a connecting surface 522 and a first elastic member 521. The first elastic member 521 is disposed between the connecting surface 522 and the cup body 111. The first elastic member 521 exerts an elastic force on the connecting surface 522 radially away from the cup body 111, causing the locking structure 50 to rotate about its own rotation axis 53 along the first circumferential direction, thereby causing the first abutting portion 51 to move toward the cover body 112 and abut against the cover body 112 to form a lock. After the first abutting portion 51 is unlocked from the cover body 112, the first abutting portion 51 rotates about the rotation axis 53 in a direction opposite to the first circumferential direction, exerting a squeezing force on the first elastic member 521. Therefore, after the air pressure disappears, the first elastic member 521 rebounds to reset the first abutting portion 51. Exemplarily, the first elastic member 521 can be configured as a spring.

[0070] As shown in Figures 2 and 3, in a more specific embodiment, the first abutting portion 51 is configured with an abutting surface 511, and the cup body 111 is arranged at an angle to the abutting surface 511 in the radial direction and the axial direction of the cup body 111 respectively; the cover body 112 is configured with a mating surface 11221, and the mating surface 11221 can be fitted with the abutting surface 511 to form a locking state. In other words, the abutting surface 511 and the mating surface 11221 are both configured as inclined surfaces, and the abutting surface 511 is configured to rotate around the rotation axis 53 in response to the first pressure difference to move away from the mating surface 11221. In this way, the cover body 112 is limited and supported by the abutting surface 511 and the mating surface 11221, which has a large limiting area and sufficient limiting reliability.

[0071] As shown in Figure 3, it should be noted that there is no self-locking angle between the abutting surface 511 and the straight line perpendicular to the abutting surface 511, so that when the action of the air pressure is transmitted to the abutting surface 511, it can be decomposed into a force F1 radially outward along the cup body 111 and a force F2 axially toward the dust collecting component 20 along the cup body 111, so that the locking structure 50 has a tendency to rotate toward the first elastic member 521, so that the locking structure 50 can rotate under the push of air pressure, so that the abutting surface 511 is away from the cover body 112 to achieve unlocking.

[0072] After the dust collection stage is completed, the dust collection assembly 10 is separated from the dust collection assembly 20, and the cover 112 is manually rotated back to its original position. The cover 112 exerts a squeezing force on the locking structure 50 toward the first dust collection chamber 101, the first elastic member 521 is stretched, and the abutting surface 511 moves toward the first dust collection chamber 101. When the manual thrust is large enough, the cover 112 can be slid over the surface of the locking structure 50 and squeezed into the first dust collection chamber 101. When the hand is released, the mating surface 11221 of the cover 112 and the abutting surface 511 can be locked again.

[0073] Next, the present application provides two different embodiments for extracting the gas in the second dust collecting chamber 201 , which are described in detail below.

[0074] Example 1:

[0075] As shown in Figures 1 and 2, in an optional embodiment, the first suction power source 31 is provided in the dust collection component 10; the dust collection component 10 also includes a first air duct 1001 and a second air duct 1002, the first air duct 1001 is located in the dust cup 11, and the second air duct 1002 is located outside the dust cup 11; the cleaning device 100 has a dust collection stage and a dust collection stage; in the dust collection stage, the air inlet 1003 of the dust collection component 10, the first air duct 1001, the first suction power source 31 and the first air outlet 1004 of the dust collection component 10 are connected; in the dust collection stage, the second dust collecting chamber 201, the second air duct 1002, the first suction power source 31 and the first air outlet 1004 of the cleaning device 10 are connected.

[0076] In this way, by setting up the independent first air duct 1001 and the second air duct 1002 to achieve switching between different working conditions, the first suction power source 31 can not only suck the external air in the dust collection stage, but also suck the air in the second dust collecting chamber 201 to form a negative pressure for dust collection in the dust collection stage, achieving the effect of serving two purposes in one, so that there is no need to set up an additional power source for gas suction in the cleaning device 100 to save space.

[0077] Specifically, as shown in FIG5 , during the dust collection stage, the first suction power source 31 can draw air into the cleaning device 100 through the air inlet 1003. The dust-laden gas enters the first air duct 1001 from the air inlet 1003, where dust and gas are separated. The clean gas then passes through the first suction power source 31 and is discharged from the first air outlet 1004 to clean the dust on the ground. During the dust collection stage, as shown in FIG1 , FIG2 and FIG7 , the air inlet 1003 is initially closed. The first suction power source 31 can draw out the gas in the second dust collecting chamber 201. The gas in the second dust collecting chamber 201 passes through the second air duct 1002 and then passes through the first suction power source 31 and is discharged from the first air outlet 1004, so that the second dust collecting chamber 201 is in a negative pressure state.

[0078] In a further embodiment, during the dust collection phase, the air inlet 1003 is configured to open in response to the opening of the cover 112, and the air inlet 1003 can communicate with the first dust collection chamber 101 and the second dust collection chamber 201. In a specific embodiment, the dust collection assembly 10 further includes an air inlet duct 1007, and the air inlet 1003 is disposed in the air inlet duct 1007, and the air inlet duct 1007 is communicated with the first air duct 1001 or the second air duct 1002. In this way, during the dust collection phase, before the cover 112 is opened, the air inlet 1003 is in a closed state to form a closed space, so that the gas in the second dust collection chamber 201 is extracted by the first suction power source 31 in the dust collection assembly 10. Furthermore, the cover 112 opens under the action of the pressure difference between the first dust collection chamber 101 and the second dust collection chamber 201, and the gas in the first dust collection chamber 101 drives the dust to be concentrated into the second dust collection chamber 201, thereby achieving the first dust collection. After the cover 112 is opened, the air inlet 1003 is also opened. At this time, the first suction power source 31 can continue to draw in external air. The external air passes through the bottom of the first dust collecting chamber 101 and enters the second dust collecting chamber 201. The air then flows from the second dust collecting chamber 201 into the second air duct 1002 and out of the first air outlet 1004, bringing the dust at the bottom of the first dust collecting chamber 101 into the second dust collecting chamber 201, achieving a second dust collection. In summary, the dust collection effect is improved through the impact of two air flows.

[0079] As shown in Figures 1 and 2, in a further embodiment, the dust collection assembly 20 further includes a return air duct 1006, which communicates between the second dust collection chamber 201 and the second air duct 1002. During the dust collection stage, when the cover 112 is not opened, the gas in the second dust collection chamber 201 enters the second air duct 1002 through the return air duct 1006, facilitating suction by the first suction power source 31. After the cover 112 is opened, air drawn from the air inlet 1003 passes through the first dust collection chamber 101 and then enters the second dust collection chamber 201. After dust collection, the gas in the second dust collection chamber 201 is separated from the dust, and the air passes through the return air duct 1006, the second air duct 1002, and the first suction power source 31 in sequence, finally flowing out of the first air outlet 1004.

[0080] In some embodiments, the first suction power source 31 can be set as a motor, a fan, etc., as long as it can achieve gas suction.

[0081] As shown in Figures 2 and 5, more specifically, the first air duct 1001 and the second air duct 1002 are spaced apart along the radial direction of the dust cup 11. Along the axial direction of the dust cup 11, filter cotton 13 can be provided between the first suction power source 31 and the first air duct 1001, and between the first suction power source 31 and the second air duct 1002 to further filter and remove dust from the gas to make the gas cleaner. The filter cotton 13 can be provided with two or more layers, and can also be replaced with other parts that can filter dust, such as a filter screen.

[0082] As shown in Figures 2 and 5, in some embodiments, the cleaning device 100 includes a cyclone separation structure 12, which is installed in the dust cup 11. The inner cavity of the cyclone separation structure 12 is connected to the dust cup 11 and forms a first air duct 1001; the channel between the dust cup 11 and the air inlet 1003 forms a second air duct 1002. In this way, the cyclone separation structure 12 can separate dust and gas to purify the gas. The inner cavity of the cyclone separation structure 12 is set as the first air duct 1001 to facilitate the separation operation. Specifically, the cyclone separation structure 12 is set as a cyclone cone. When the gas and dust touch the side wall of the cyclone cone, the dust will rotate downward along the side wall, and the gas will be sucked up under the action of the first suction power source 31, thereby achieving the separation of dust and gas.

[0083] As shown in Figures 2 to 6, in a further embodiment, the cleaning device 100 includes an air duct switching assembly 40, which is installed between the first air duct 1001 and the second air duct 1002. The air duct switching assembly 40 is used to switch one of the first air duct 1001 and the second air duct 1002 to open and the other to close. In this way, the setting of the air duct switching assembly 40 can make switching between the first air duct 1001 and the second air duct 1002 more convenient. When the cleaning device 100 is in the dust collection stage, the air duct switching assembly 40 is controlled to open the first air duct 1001. When the cleaning device 100 is in the dust collection stage, the air duct switching assembly 40 is controlled to open the second air duct 1002 and close the first air duct 1001.

[0084] As shown in Figures 2 to 6, in a further embodiment, the air duct switching assembly 40 includes a rotating cover plate 41, the rotating cover plate 41 has a rotating shaft 411, and along the radial direction of the rotating shaft 411, the part located on one side of the rotating shaft 411 is defined as a first blocking portion 412, and the other side is defined as a second blocking portion 413; the first blocking portion 412 is used to block the first air duct 1001, and the second blocking portion 413 is used to block the second air duct 1002. The rotating cover plate 41 switches the first blocking portion 412 or the second blocking portion 413 for blocking by rotating around the rotating shaft 411, so as to realize the switching between the first air duct 1001 and the second air duct 1002. Specifically, during the dust collection phase, the rotatable cover 41 rotates to the second blocking portion 413 to block the second air duct 1002. At this time, the first blocking portion 412 cancels the blockage of the first air duct 1001, and the first air duct 1001 is opened. During the dust collection phase, the rotatable cover 41 rotates to the first blocking portion 412 to block the first air duct 1001. At this time, the second blocking portion 413 cancels the blockage of the second air duct 1002, and the second air duct 1002 is opened. Furthermore, sealing rings can be installed on the side of the first blocking portion 412 facing the first air duct 1001 and the side of the second blocking portion 413 facing the second air duct 1002, respectively, to achieve good airtightness during blocking.

[0085] As shown in Figures 2 to 6, in a specific embodiment, the air duct switching assembly 40 includes a second elastic member 42, which is installed between the first blocking portion 412 and the cyclone separation structure 12; the air duct switching assembly 40 also includes a top contact member 43, one end of which is connected to the second blocking portion 413; the second elastic member 42 is configured to lift the first blocking portion 412 in response to the separation of the dust collection assembly 10 and the dust collection assembly 20; and the top contact member 43 is configured to lift the second blocking portion 413 in response to the docking of the dust collection assembly 10 and the dust collection assembly 20. In this way, during the dust collection stage, the dust collection assembly 10 and the dust collection assembly 20 are separated, and the second elastic member 42 exerts an elastic force on the first blocking portion 412, which can lift the first blocking portion 412 to open the first air duct 1001, while the second blocking portion 413 downwardly blocks the second air duct 1002. After the dust collection assembly 10 and the dust collection assembly 20 are docked, the top contact member 43 overcomes the elastic force of the second elastic member 42, causing the second blocking portion 413 to lift, thereby opening the second air duct 1002. The first blocking portion 412, under the pressure of the top contact member 43, blocks the first air duct 1001. The second elastic member 42 and the top contact member 43 each exert force on the rotating cover 41 to achieve blocking, making operation simple. For example, the second elastic member 42 can be a spring, and the top contact member 43 can be a push rod. In other embodiments, other components can be selected based on actual conditions, as long as the above-mentioned effects are achieved.

[0086] As shown in Figures 2 and 7, in a more specific embodiment, the dust collecting assembly 20 is further provided with a second abutting portion 21, and in the dust collecting stage, the second abutting portion 21 abuts against the top contact member 43. In this way, in the dust collecting stage, the dust collecting assembly 10 needs to be docked and matched with the dust collecting assembly 20 so as to collect the dust in the dust cup 11 into the second dust collecting chamber 201. Specifically, the second abutting portion 21 can be configured to be protruding from the end face of the dust collecting assembly 20 facing the dust collecting assembly 10. With this configuration, when docking, the second abutting portion 21 protruding from the docking end face can push the top contact member 43 upward, and the top contact member 43 then transmits the force to the second blocking portion 413, thereby realizing the opening of the second air duct 1002. Exemplarily, the second abutting portion 21 can be configured as a protruding block, a spring, etc., and it is only necessary to realize the lifting of the top contact member 43.

[0087] As shown in FIG7 , in an optional embodiment, the dust collection assembly 20 includes a dust collection housing 22 and a dust collection bag 23. The space within the dust collection housing 22 forms a second dust collection chamber 201. The dust collection bag 23 is installed in the second dust collection chamber 201 and is used to collect dust in the dust cup 11. In this way, the dust collection housing 22 is configured to facilitate dust collection in the second dust collection chamber 201, and the dust collection bag 23 is configured to facilitate dust collection, and air can pass through the dust collection bag 23.

[0088] As shown in FIG7 , in one specific embodiment, the dust collection assembly 20 includes a dust collection body 24, which interfaces with the dust collection assembly 10 and is provided with a collection chamber 241, which communicates with the second dust collection chamber 201. When the cover 112 is opened, the first dust collection chamber 101 can communicate with the second dust collection chamber 201 through the collection chamber 241. A dust bag 23 is mounted at the opening of the collection chamber 241 of the dust collection body 24, so that dust can flow from the first dust collection chamber 101 through the collection chamber 241 and into the dust bag 23.

[0089] Example 2:

[0090] As shown in Figure 8, the difference between Example 2 and Example 1 is that the first suction power source 31 is provided in the dust collection component 20, and the dust collection component 10 also includes a second suction power source 32, which is used to connect the external gas to the first dust collection chamber 101. In other words, the first suction power source 31 in Example 2 only sucks the gas in the second dust collection chamber 201, and the dust collection component 10 sucks the external dust-laden gas through the second suction power source 32. In this way, the first suction power source 31 and the second suction power source 32 can independently suck the gas, which is simple to operate. Specifically, the first suction power source 31 is provided at the bottom of the dust collection housing 22, avoiding the dust bag 23. At the same time, a filter cotton can be provided on the outside of the exhaust port of the first suction power source 31 to filter the gas, so that the gas is discharged cleanly and dust is reduced. The filtered gas flows out from the second air outlet 1005.

[0091] In this embodiment, when the first suction power source 31 extracts gas from the second dust collecting chamber 201, the air inlet is closed and the cover 112 opens under the action of the gas pressure in the first dust collecting chamber 101. The gas in the first dust collecting chamber 101 rushes into the second dust collecting chamber 201 with the dust, thereby achieving the first dust collection. After the cover 112 is opened, the air inlet is also opened, and the second suction power source 32 sucks external gas from the air inlet. The external gas passes through the dust cup 11 and drives the remaining dust into the second dust collecting chamber 201 to achieve the second dust collection, which is conducive to improving the dust collection efficiency. In addition, this arrangement can also achieve dust collection during the secondary dust collection. When the external gas enters the interior of the dust collection component 10, it also brings external dust into the dust collection component 10. The external dust and the dust originally in the first dust collection chamber 101 enter the second dust collection chamber 201 together.

[0092] In this embodiment, the second air duct 1002, the air duct switching assembly 40, and the return air duct 1006 are not required, which helps maintain the original structure of the dust collection assembly 10. Except for the above content, the content of the second embodiment is substantially the same as that of the first embodiment, and can be referred to in detail in the first embodiment.

[0093] Example 3

[0094] As shown in Figures 9 and 10, the difference between the present application and the first embodiment is that the structure of the air duct switching is different. In this embodiment, the dust collection assembly 10 includes a first shielding structure 61, a second shielding structure 62 and a sealing plate 63. The first shielding structure 61 and the second shielding structure 62 are arranged at an angle. The first shielding structure 61 is arranged between the dust cup 11 and the first suction power source 31, and can block the airflow along the axial direction of the dust cup 11 in the first air duct 1001. The first shielding structure 61 is provided with a first flow opening 601 at a position opposite to the second air duct 1002. The airflow in the second air duct 1002 can enter the first suction power source 31 through the first flow opening 601. The second shielding structure 62 is provided between the first air duct 1001 and the second air duct 1002. It can block the airflow along the radial direction of the dust cup 11. A second flow opening 602 is provided between the first shielding structure 61 and the second shielding structure 62. The first air duct 1001 and the second air duct 1002 can circulate through the second flow opening 602.

[0095] Furthermore, the sealing plate 63 can block the opening of the second air duct 1002 on the side away from the first circulation port 601, and open when the dust collection component 10 and the dust collection component 20 are docked. The dust collection component 20 also includes a connecting pipe 25, and the space inside the connecting pipe 25 forms a third air duct 1008. The third air duct 1008 is communicated with the second dust collecting chamber 201. After the dust collection component 10 and the dust collection component 20 are docked, the connecting pipe 25 extends into the second air duct 1002, and one end thereof away from the second dust collecting chamber 201 along its own axial direction is blocked at the second circulation port 602, and is communicated with the first circulation port 601. In a specific embodiment, a sealing member is provided between the connecting pipe 25 and the first shielding structure 61 to achieve a seal between the connecting pipe 25 and the first shielding structure 61, thereby preventing gas leakage from occurring at the first circulation port 601.

[0096] During the vacuuming stage, the first suction power source 31 can inhale external air through the first circulation port 601, the second circulation port 602 and the air inlet 1003. The external air enters the first air duct 1001 from the air inlet 1003, and the gas and dust are separated in the first air duct 1001. The dust falls into the dust cup 11, and the gas separated from the dust passes through the second circulation port 602, the second circulation port 602 and the first suction power source 31, and finally flows out from the first air outlet 1004.

[0097] During the dust collection phase, the dust collection assembly 10 and the dust collection assembly 20 are docked, and the sealing plate 63 is opened. At this time, the first air duct 1001 is blocked by the connecting pipe 25, and the cover 112 is in a closed state. The first suction power source 31 can extract the gas in the second dust collection chamber 201 through the first circulation port 601 and the third air duct 1008, so that the second dust collection chamber 201 is in a negative pressure state, so that the gas in the first dust collection chamber 101 can unlock the cover 112 through the air pressure and rush out of the first dust collection chamber 101, thereby bringing the dust into the second dust collection chamber 201. After being separated from the dust in the second dust collection chamber 201, the gas can pass through the third air duct 1008, the second air duct 1002, the first circulation port 601 and the first suction power source 31 in sequence, and finally be discharged from the first air outlet 1004.

[0098] In the embodiment of the present application, the second air duct 1002 is a passage between the dust cup 11 and the housing of the dust collection assembly 10. Specifically, one end of the sealing plate 63 is rotatably connected to the housing, and the other end is snap-connected to the dust cup 11. The dust collection assembly 20 is provided with a push plate. When the dust collection assembly 10 and the dust collection assembly 20 are docked, the push plate can push the sealing plate 63 to unlock the sealing plate 63.

[0099] Except for the above contents, the contents of Example 2 are substantially the same as those of Example 1, and reference may be made to Example 1, which will not be repeated here.

[0100] The present application also provides a dust collection method, which is applied to the above-mentioned cleaning device; the dust collection method includes: docking the dust collecting component 20 with the dust suction component 10; the first suction power source 31 sucks the gas in the second dust collecting chamber 201 of the dust collecting component 20 to form a negative pressure in the second dust collecting chamber 201; the cover body 112 is opened when triggered by the negative pressure, and the first dust collecting chamber 101 and the second dust collecting chamber 201 are connected.

[0101] In this way, by sucking the gas in the second dust collecting chamber 201 to form a negative pressure in the second dust collecting chamber 201, the cover 112 is opened, and the gas in the first dust collecting chamber 101 can drive the dust in the first dust collecting chamber 101 into the second dust collecting chamber 201. Under the action of gas pressure, the dust can be concentrated and rushed into the second dust collecting chamber 201, which is beneficial to improve the efficiency of dust collection.

[0102] Specifically, the first suction power source 31 sucks the gas in the second dust collecting chamber 201 of the dust collecting component 20 to form a negative pressure in the second dust collecting chamber 201, including: a pressure difference is formed between the first dust collecting chamber 101 and the second dust collecting chamber of the dust collecting component 10, and the gas pressure in the first dust collecting chamber 101 is greater than the gas pressure in the second dust collecting chamber 201, that is, a pressure difference is generated between the two, and when the pressure difference reaches the first pressure difference, the gas pressure in the first dust collecting chamber 101 can open the cover 112.

[0103] In some embodiments, when the pressure difference between the first dust collecting chamber 101 and the second dust collecting chamber 201 is set to 4 kPa, the gas in the first dust collecting chamber 101 has sufficient gas pressure to open the cover 112. In other embodiments, the corresponding pressure difference value can also be set according to the conditions for opening the cover 112, which is not specifically limited here. Furthermore, the first suction power source 31 can perform multiple suctions on the gas in the second dust collecting chamber 201 to gradually reach an ideal pressure difference value. Exemplarily, after the first suction power source 31 is turned on and operated for a first time, the first suction power source 31 enters a standby state. After the second standby time, the first suction power source 31 continues to suck and continues for the first time, and so on, until the power-on and standby actions are repeated n times and then end. Wherein, n≥2, n is an integer, for example, n can be set to 2, 3 or 4, as long as the set pressure difference value is met.

[0104] In a further embodiment, the dust collection method also includes: before the cover body 112 is opened, the air inlet 1003 of the dust collection assembly 10 is closed; after the cover body 112 is opened, the air inlet 1003 is opened, and the air inlet 1003 is connected to the first dust collecting chamber 101 and the second dust collecting chamber 201.

[0105] Thus, before the cover 112 is opened, the air inlet 1003 is closed to keep the cleaning device in a sealed state, which facilitates the concentrated suction of the gas in the second dust collecting chamber 201, so that the second dust collecting chamber 201 quickly reaches a negative pressure state. After the cover 112 is flushed open by the gas in the first dust collecting chamber 101, the air inlet 1003 is opened, and external air can be drawn into the cleaning device, further flushing the remaining dust at the bottom of the first dust collecting chamber 101 into the second dust collecting chamber 201, further improving the dust collection effect.

[0106] The present application also provides a dust collection method, which is applied to a cleaning device 100. The cleaning device 100 is provided with a first dust collecting chamber 101 and a second dust collecting chamber 201 that can be selectively connected. The cleaning device 100 includes a dust cup 11, and the dust cup 11 forms the first dust collecting chamber 101. The dust collection method includes: sucking the gas in the second dust collecting chamber 201 to form a negative pressure in the second dust collecting chamber 201; the cover 112 of the dust cup 11 is opened under the negative pressure, and the first dust collecting chamber 101 and the second dust collecting chamber 201 are connected.

[0107] In this way, by sucking the gas in the second dust collecting chamber 201 to form a negative pressure in the second dust collecting chamber 201, the cover 112 is opened, and the gas in the first dust collecting chamber 101 can drive the dust in the first dust collecting chamber 101 into the second dust collecting chamber 201. Under the action of gas pressure, the dust can be concentrated and rushed into the second dust collecting chamber 201, which is beneficial to improve the efficiency of dust collection.

[0108] Specifically, sucking the gas in the second dust collecting chamber 201 to form a negative pressure in the second dust collecting chamber 201 includes: forming a pressure difference between the first dust collecting chamber 101 and the second dust collecting chamber 201, and the gas pressure in the first dust collecting chamber 101 is greater than the gas pressure in the second dust collecting chamber 201, that is, a pressure difference is generated between the two, and when the pressure difference reaches the first pressure difference, the gas pressure in the first dust collecting chamber 101 can open the cover 112.

[0109] In a further embodiment, the cleaning device 100 is provided with an air inlet 1003 connected to the first dust collecting chamber 101, and the dust collection method further includes: before the cover body 112 is opened, the air inlet 1003 of the dust collection component 10 is closed; after the cover body 112 is opened, the air inlet 1003 is opened, and the air inlet 1003 is connected to the first dust collecting chamber 101 and the second dust collecting chamber 201.

[0110] Thus, before the cover 112 is opened, the air inlet 1003 is closed to keep the cleaning device in a sealed state, which facilitates the concentrated suction of the gas in the second dust collecting chamber 201, so that the second dust collecting chamber 201 quickly reaches a negative pressure state. After the cover 112 is flushed open by the gas in the first dust collecting chamber 101, the air inlet 1003 is opened, and external air can be drawn into the cleaning device 100, further flushing the remaining dust at the bottom of the first dust collecting chamber 101 into the second dust collecting chamber 201, further improving the dust collection effect.

[0111] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0112] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. A cleaning device, characterized in that: The cleaning device comprises: A dust collection assembly (10) comprises a dust cup (11), wherein the dust cup (11) comprises a cup body (111) and a cover body (112) movably connected to the cup body (111), wherein the cup body (111) and the cover body (112) are arranged to form a first dust collection chamber (101); A dust collecting assembly (20) comprising a second dust collecting chamber (201); and a first suction power source (30), provided in the dust suction component (10) or the dust collection component (20), for forming a negative pressure in the second dust collection chamber (201); the cover (112) being configured to open relative to the cup body (111) under the triggering of the negative pressure, so that the first dust collection chamber (101) and the second dust collection chamber (201) are in communication; Wherein, the cleaning device has a dust collection stage, and in the dust collection stage, the dust cup (11) is docked with the second dust collection chamber (201).

2. The cleaning device according to claim 1, characterized in that Along the radial direction of the dust cup (11), the cover body (112) has a first end (1121) and a second end (1122) that are arranged opposite to each other, the first end (1121) is movably connected to the cup body (111), and the second end (1122) can be opened relative to the cup body (111) under the triggering of the negative pressure.

3. The cleaning device according to claim 2, characterized in that: The first end (1121) is rotatably connected to the cup body (111), and the second end (1122) is snap-connected to the cup body (111), and the second end (1122) is configured to unlock from the cup body (111) in response to the pressure difference between the first dust collecting chamber (101) and the second dust collecting chamber (201) reaching a first pressure difference.

4. The cleaning device according to claim 3, characterized in that: The dust collecting assembly (10) comprises a locking structure (50), wherein the locking structure (50) is rotatably connected to the cup body (111), and the locking structure (50) comprises an elastic portion (52) and a first abutting portion (51) which are arranged at intervals, wherein the elastic portion (52) and the first abutting portion (51) are arranged at two ends of a rotating shaft (53) of the locking structure (50), the elastic portion (52) is elastically connected to the cup body (111), and the first abutting portion (51) is snap-connected to the cover body (112).

5. The cleaning device according to claim 4, characterized in that: The first abutment portion (51) is configured with an abutment surface (511), and the cup body (111) is radially and axially arranged at an angle to the abutment surface (511), respectively; the cover body (112) is configured with a mating surface (11221), and the mating surface (11221) can be fitted to the abutment surface (511) to form a lock, and the abutment surface (511) is configured to rotate around the rotating shaft (53) in response to the first pressure difference to move away from the mating surface (11221).

6. The cleaning device according to claim 5, characterized in that: In the dust collecting section, the air inlet (1003) of the dust collecting assembly (10) is configured to open in response to the opening of the cover (112), and the air inlet (1003) can be connected to the first dust collecting chamber (101) and the second dust collecting chamber (201).

7. The cleaning device according to any one of claims 1 to 6, characterized in that: The first suction power source (30) is arranged on the dust suction component (10); The dust collection assembly (10) comprises a first air duct (1001) and a second air duct (1002), wherein the first air duct (1001) is located inside the dust cup (11), and the second air duct (1002) is located outside the dust cup (11); The cleaning device has a dust suction stage and a dust collection stage; in the dust suction stage, the air inlet (1003) of the dust suction component (10), the first air duct (1001), the first suction power source (30) and the first air outlet (1004) of the dust suction component (10) are connected; in the dust collection stage, the second dust collection chamber (201), the second air duct (1002), the first suction power source (30) and the first air outlet (1004) are connected.

8. The cleaning device according to claim 7, characterized in that: The dust collection component (10) comprises an air duct switching component (40), wherein the air duct switching component (40) is installed between the first air duct (1001) and the second air duct (1002), and the air duct switching component (40) is used to switch one of the first air duct (1001) and the second air duct (1002) to be opened and the other to be closed.

9. The cleaning device according to claim 8, characterized in that: The air duct switching assembly (40) comprises a rotating cover plate (41), wherein the rotating cover plate (41) has a rotating shaft (411), and along the radial direction of the rotating shaft (411), a portion located on one side of the rotating shaft (411) is defined as a first blocking portion (412), and the other side is defined as a second blocking portion (413); The first blocking portion (412) is used to block the first air duct (1001), and the second blocking portion (413) is used to block the second air duct (1002). The rotating cover plate (41) switches between the first blocking portion (412) and the second blocking portion (413) for blocking by rotating around the rotating shaft (411).

10. The cleaning device according to claim 9, characterized in that The cleaning device comprises a cyclone separation structure (12), wherein the cyclone separation structure (12) is installed in a dust cup (11), wherein an inner cavity of the cyclone separation structure (12) is connected to the dust cup (11) and forms the first air duct (1001); and a channel between the dust cup (11) and the air inlet (1003) forms the second air duct (1002).

11. The cleaning device according to claim 10, characterized in that The air duct switching assembly (40) comprises a second elastic member (42), wherein the second elastic member (42) is installed between the first blocking portion (412) and the cyclone separation structure (12); the air duct switching assembly (40) further comprises a top contact member (43), wherein one end of the top contact member (43) is connected to the second blocking portion (413); The second elastic member (42) is configured to lift up the first blocking portion (412) in response to the separation of the dust suction component (10) and the dust collection component (20); and the top contact member (43) is configured to lift up the second blocking portion (413) in response to the docking of the dust suction component (10) and the dust collection component (20).

12. The cleaning device according to claim 11, characterized in that The dust collecting assembly (20) is further provided with a second abutting portion (21), and in the dust collecting stage, the second abutting portion (21) abuts against the top contact member (43).

13. The cleaning device according to any one of claims 1 to 6, characterized in that: The first suction power source (31) is disposed in the dust collecting component (20), and the first suction power source (31) is connected to the second air outlet (1005) of the dust collecting component (20).

14. A dust collection method, characterized in that: A cleaning device applied to any one of claims 1 to 13; the dust collection method comprising: Connecting the dust collecting assembly (20) to the dust suction assembly (10); The first suction power source (30) sucks gas in the second dust collecting chamber (201) of the dust collecting assembly (20) to form a negative pressure in the second dust collecting chamber (201); The cover (112) is opened when triggered by the negative pressure, and the first dust collecting chamber (101) and the second dust collecting chamber (201) are connected.

15. The dust collection method according to claim 14, characterized in that: The first suction power source (30) sucks the gas in the second dust collecting chamber (201) of the dust collecting assembly (20) to form a negative pressure in the second dust collecting chamber (201), comprising: forming a pressure difference between the first dust collecting chamber (101) and the second dust collecting chamber of the dust collecting assembly (10), and the gas pressure in the first dust collecting chamber (101) is greater than the gas pressure in the second dust collecting chamber (201); The cover (112) is opened under the triggering of the negative pressure, comprising: when the pressure difference between the first dust collecting chamber (101) and the second dust collecting chamber (201) reaches a first pressure difference, the cover (112) is opened.

16. The dust collection method according to claim 14, characterized in that: The dust collection method further comprises: before the cover (112) is opened, the air inlet (1003) of the dust collection component (10) is closed; after the cover (112) is opened, the air inlet (1003) is opened, and the air inlet (1003) is connected to the first dust collecting chamber (101) and the second dust collecting chamber (201).

17. A dust collection method, characterized in that: Applied to a cleaning device, the cleaning device is provided with a first dust collecting chamber and a second dust collecting chamber which are selectively connectable, the cleaning device comprises a dust cup, the dust cup forms the first dust collecting chamber, and the dust collecting method comprises: Sucking the gas in the second dust collecting chamber to form a negative pressure in the second dust collecting chamber; The cover of the dust cup is opened under the negative pressure, and the first dust collecting chamber is communicated with the second dust collecting chamber.

18. The dust collection method according to claim 17, characterized in that: The step of sucking gas from the second dust collecting chamber to form a negative pressure in the second dust collecting chamber comprises: forming a pressure difference between the first dust collecting chamber and the second dust collecting chamber, wherein the gas pressure in the first dust collecting chamber is greater than the gas pressure in the second dust collecting chamber; The cover of the dust cup is opened under the negative pressure, comprising: when the pressure difference between the first dust collecting chamber and the second dust collecting chamber reaches a first pressure difference, the cover is opened.

19. The dust collection method according to claim 17, characterized in that: The cleaning device is provided with an air inlet connected to the first dust collecting chamber, and the dust collecting method further includes: before the cover body is opened, the air inlet of the dust suction assembly is closed; after the cover body is opened, the air inlet is opened, and the air inlet is connected to the first dust collecting chamber and the second dust collecting chamber.

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