Dust collector and dust collection system

Abstract

The utility model belongs to the field of dust collectors, and particularly provides a dust collector and a dust collection system, which effectively clean the dust collector through a simple structural design, and particularly can practically clean fine dust. The dust collector comprises a first-stage dust collection unit, a second-stage dust collection unit and a third-stage dust collection unit, the second-stage dust collection unit is arranged in the first-stage dust collection unit and comprises a second-stage dust cavity and a second-stage clearance cover; the side, facing the second-stage dust cavity, of the second-stage bin cleaning cover serves as a cover opening side, and a hollow area which is communicated with a bin cleaning opening of the second-stage dust cavity and can contain dust is formed in the cover opening side. A bin cleaning opening of the second-stage dust cavity is positioned inside the first-stage dust cavity and is closer to the top surface of the first-stage dust cavity than a bin cleaning opening of the first-stage dust collection cavity; in a ground suction state, the second-stage clearance cover and the first-stage clearance cover seal and close the two clearance openings respectively; in the bin cleaning state, the first-stage bin cleaning cover can be rotated and drive the second-stage bin cleaning cover to leave the closed position, and then the two bin cleaning openings are exposed.

Description

Technical Field

[0001] This utility model belongs to the field of vacuum cleaners, specifically relating to vacuum cleaners and vacuuming systems. Background Technology

[0002] Vacuum cleaners are now widely used in daily life, providing users with efficient and convenient cleaning services. Currently, vacuum cleaners on the market typically have a hollow dust cup containing a steel mesh filter, with a high-efficiency particulate air (HEPA) filter located inside or downstream of the mesh. A fan generates suction, creating an airflow at the vacuum cleaner's inlet. This airflow carries dirt into the dust cup, where centrifugal rotation causes large dust particles to fall to the bottom, while fine dust particles are carried by the airflow into the steel mesh and intercepted by the HEPA filter. The airflow then passes through the HEPA filter and is expelled into the environment by the vacuum cleaner.

[0003] After vacuuming, the dust cup accumulates dirt and needs to be cleaned. Manual cleaning is not only prone to making a mess and causing secondary environmental pollution, but it is also time-consuming, laborious, and inconvenient. To facilitate cleaning, base station-style vacuum systems have emerged on the market. These systems include a base station that houses the vacuum cleaner and allows for dust cup emptying while the dust cup is in its stored state. However, this emptying only removes large dust particles; fine dust trapped by the HEPA filter cannot be removed. Therefore, after a period of use, the HEPA filter becomes clogged with accumulated fine dust, requiring the user to remove and clean or replace it. This still incurs additional operational and financial burdens for the user. Furthermore, during installation and removal, dust on the HEPA filter is easily vibrated and falls into the airflow channel of the blower, causing damage during operation and severely impacting the vacuum cleaner's lifespan.

[0004] Based on this, the latest technology replaces the HEPA filter with a cyclone separator cone. This cyclone separator cone acts as a secondary cone to separate fine dust, and then the base station cleans the fine dust collected in the secondary cone. However, during actual cleaning, because the air resistance of the dust cup is much smaller than that of the secondary cone, the cleaning airflow basically only passes through the dust cup and has difficulty flowing into the secondary cone, thus failing to effectively clean the fine dust inside the secondary cone. US patent application US20230404344A1 discloses a vacuum cleaner system that opens the cover in two steps. First, only the second discharge cover corresponding to the secondary cone is opened, allowing the airflow from the base station to pass only through the secondary cone, thereby overcoming obstacles such as electrostatic forces to suck up the fine dust collected in the second dust separator; then the first discharge cover is opened, allowing the base station to use negative pressure to suck up the larger dust collected in the first dust separator. However, this solution requires the two covers to be opened independently, and it is also necessary to control one of the two covers of the two-stage dust separator to open and clean for a certain period of time before the second one opens and cleans, making the structure and cleaning method complex. Utility Model Content

[0005] This invention is made to solve the above-mentioned problems, and aims to provide a vacuum cleaner and vacuuming system that can effectively clean the vacuum chamber with a simple structure, especially the fine dust inside the secondary cone.

[0006] To achieve the above objectives, the present invention adopts the following solution:

[0007] Vacuum Cleaner

[0008] This utility model provides a vacuum cleaner with a vacuuming state for collecting dirt from a surface to be cleaned and a cleaning state for removing the collected dirt. It includes: a primary dust collection unit comprising a primary dust chamber and a primary cleaning cover rotatably positioned over the bottom cleaning opening of the primary dust chamber; and a secondary dust collection unit disposed within the primary dust collection unit, comprising a secondary dust chamber and a secondary cleaning cover formed on the primary cleaning cover and positioned over the bottom cleaning opening of the secondary dust chamber; characterized in that the secondary cleaning cover faces the secondary dust chamber... One side of the chamber serves as the cover opening side, forming a hollow area that connects to the cleaning port of the secondary dust chamber and is capable of holding dust. The cleaning port of the secondary dust chamber is located inside the primary dust chamber and is at least 2mm closer to the top surface of the primary dust chamber than the cleaning port of the primary dust collection chamber. In the vacuuming state, the secondary cleaning cover and the primary cleaning cover seal and close the cleaning ports of the primary and secondary dust chambers, respectively. In the cleaning state, the primary cleaning cover can be rotated and drive the secondary cleaning cover away from the closed position, thereby exposing the cleaning ports of the primary and secondary dust chambers.

[0009] The beneficial effects of the above scheme are as follows: The hollow area of ​​the secondary cleaning cover can serve as a dust storage section, accommodating and storing as much fine dust as possible collected in the secondary dust chamber during suction. During cleaning, the stored fine dust is carried away from the cleaning port of the secondary dust chamber along with the secondary cleaning cover. As the secondary cleaning cover rotates, the dust is poured out from the opening side (pouring port) of the hollow area, thus cleaning most of the dust from the secondary dust collection unit. Furthermore, since the cleaning port of the secondary dust chamber is located inside the primary dust chamber, at least 2mm closer to the top surface of the primary dust collection chamber than the cleaning port of the primary dust collection chamber, it is easier to create turbulence between the hollow area of ​​the secondary cleaning cover and the primary dust collection chamber, thereby cleaning the fine dust remaining in the secondary dust chamber and on the secondary cleaning cover (including the hollow area). This invention opens the secondary cleaning cover through the primary cleaning cover, eliminating the need for independent control of the two covers and for controlling the two cones to clean in sequence and at predetermined times. Therefore, this invention is simpler and more reliable.

[0010] In this invention, the bottom of the dust chamber is relative to the vacuuming state. It is known that in the vacuuming state, dirt will accumulate / remain at the bottom of the dust chamber due to its own weight. Correspondingly, the top surface of the dust chamber is the side facing away from the bottom of the dust chamber.

[0011] Specifically, in the vacuum cleaner provided by this utility model, both the primary dust collection unit and the secondary dust collection unit are cyclone separation dust collection units; the primary dust chamber is a dust cup, and the secondary dust chamber is a secondary cyclone separation cone.

[0012] Specifically, in the vacuum cleaner provided by this utility model, when in the emptying state, the length direction of the primary dust chamber is not perpendicular to the ground, making the overall volume of the vacuum cleaner smaller. The angle between the length direction of the primary dust chamber and the horizontal direction (calculated as the minimum angle) is preferably no more than 30°, more preferably no more than 10°. In this way, when in the emptying state, the primary dust chamber is basically parallel to the ground, making the placement more stable, requiring less base station space, and the overall space occupied by the vacuum cleaner after placing the base station is also smaller.

[0013] Preferably, in the vacuum cleaner provided by this utility model, the depth of the hollow area in the thickness direction of the secondary cleaning cover is not less than 5mm, more preferably about 7-8mm, so that it can more effectively collect more fine dust.

[0014] Preferably, in the vacuum cleaner provided by this utility model, the lower surface of the hollow area corresponding to the cleaning state (when the secondary cleaning cover has not yet left the closed position) can be slightly tilted upwards from the bottom to the opening side (the closer to the opening side, the higher), with an upward tilt angle not exceeding 30°, more preferably not exceeding 20°, to guide fine dust to the bottom of the hollow area, avoiding external force (generated by contact collision) during the vacuum cleaner placement process causing dust to backflow along the opening of the hollow area to the upper part of the secondary dust chamber (opposite direction of the cleaning port), so that the dust is kept in the hollow area as much as possible before the secondary cleaning cover leaves the closed position, and at the same time, the obstruction to the dust pouring port can be minimized.

[0015] Preferably, in the vacuum cleaner provided by this utility model, the hollow area occupies at least 1 / 3 of the maximum usable volume of the secondary cleaning cover, and the maximum usable volume of the secondary cleaning cover is the volume after the hollow area of ​​the secondary cleaning cover is completely filled with a solid structure. This can more effectively contain more fine dust.

[0016] Preferably, in the vacuum cleaner provided by this utility model, the hollow area covers at least 1 / 2 of the area of ​​the secondary dust chamber cleaning opening, more preferably 2 / 3. This results in a larger opening of the secondary cleaning cover (the opening side of the hollow area), which is more conducive to the secondary cleaning cover collecting fine dust before opening and emptying the fine dust after opening. More preferably, the hollow area covers at least the area below the secondary dust chamber cleaning opening (the area near the ground) when it is in the cleaning state. In addition to the aforementioned effects, this further prevents fine dust from flowing back into the upper part of the secondary dust chamber (the opposite direction of the cleaning opening) during the vacuum cleaner's placement process, ensuring that the dust is kept as much as possible within the hollow area before the secondary cleaning cover leaves the closed position.

[0017] Preferably, in the vacuum cleaner provided by this utility model, the primary cleaning cover and the secondary cleaning cover are inclined opening covers (not fully open at 90°), and the opening angle is more preferably no more than 60°, and even more preferably no more than 45°. This is more conducive to forming turbulence that can clean the residual fine dust in the secondary dust chamber opening and hollow area during base station negative pressure cleaning, and makes the base station more miniaturized.

[0018] Preferably, in the vacuum cleaner provided by this utility model, the secondary dust collection unit is configured such that, in the cleaning state and before the secondary cleaning cover leaves the closed position, the junction between the secondary dust chamber and the secondary cleaning cover on the uppermost outer contour of the secondary dust collection unit is at its lowest point. This configuration is more conducive to large dust particles, such as long hair, falling on the secondary dust collection unit being guided by their own weight to the junction between the secondary dust chamber and the secondary cleaning cover. After the cover is opened, as the secondary cleaning cover rotates, the dust particles fall from the secondary dust collection unit into the primary dust chamber or base station, thus facilitating cleaning and preventing large dust particles from becoming entangled in the secondary dust collection unit and difficult to remove.

[0019] Preferably, in the vacuum cleaner provided by this utility model, the secondary cleaning cover is configured such that, in the cleaning state and before the secondary cleaning cover leaves the closed position, the upper part forms a cover-side guide slope that slopes downward toward the secondary dust chamber; the secondary dust chamber is configured such that, in the cleaning state and before the secondary cleaning cover leaves the closed position, the cleaning opening forms a chamber-side guide slope that slopes downward toward the secondary cleaning cover.

[0020] Preferably, in the vacuum cleaner provided by this utility model, the cleaning port of the secondary dust chamber is at least 5mm closer to the top surface of the primary dust chamber than the cleaning port of the primary dust collection chamber. This makes the area of ​​the primary dust chamber corresponding to the cleaning port of the secondary dust chamber larger, which is beneficial for forming more turbulence during base station negative pressure cleaning, which can clean the residual fine dust in the cleaning port and hollow area of ​​the secondary dust chamber, thereby making the dirt in the vacuum cleaner, especially the fine dust in the secondary dust collection unit, more thoroughly cleaned.

[0021] Preferably, in the vacuum cleaner provided by this utility model, a closing mechanism that is movable in the closing direction is provided on the primary cleaning cover. This closing mechanism can move relative to the outer surface of the primary cleaning cover and, when subjected to external force, approaches and pushes the primary cleaning cover in the closing direction. This structure facilitates the automatic closing of the vacuum cleaner by the base station pushing it during the departure process, eliminating the need for manual closing by the user.

[0022] Specifically, in the vacuum cleaner provided by this utility model, the primary cleaning cover and the secondary cleaning cover are integrally formed, or the secondary cleaning cover is fixed (cannot be rotated relative to the primary cleaning cover). This structure is simpler and more stable, and the primary cleaning cover can drive the secondary cleaning cover to close and open.

[0023] Preferably, in the vacuum cleaner provided by this utility model, the primary cleaning port covers at least 60% of the bottom cross-sectional area of ​​the primary dust chamber, which is more conducive to cleaning. The bottom cross-sectional area is the area enclosed by the outline of the bottom outer surface of the primary dust chamber, and this bottom cross-sectional area is larger than the area of ​​the primary cleaning port.

[0024] Preferably, the vacuum cleaner provided by this utility model further includes a sealing component, which comprises a primary seal and a secondary seal, respectively disposed on the primary dust collection unit and the secondary dust collection unit, for sealing the contact area between the primary dust chamber and the primary cleaning cover, and the contact area between the secondary dust chamber and the secondary cleaning cover, when the cover is closed. This sealing component is configured such that, in the cleaning state, the primary cleaning cover leaves the closed position first, followed by the secondary cleaning cover. This provides a better sealing effect; otherwise, the secondary cleaning cover is prone to air leakage after the primary cleaning cover is closed.

[0025] <Vacuum Cleaning System>

[0026] Furthermore, this utility model also provides a vacuuming system, including: a vacuum cleaner as described in any of the above-mentioned <vacuum cleaners>; and a base station for storing the vacuum cleaner and cleaning it. This vacuuming system includes the <vacuum cleaners> mentioned above, and therefore has the same beneficial effects as the <vacuum cleaners> described above.

[0027] Preferably, in the vacuum cleaning system provided by this utility model, the vacuum cleaner includes a dust cup and a dust cup cover. The dust cup cover has a closed state with the dust cup cleaning port closed and an open state with the dust cup cleaning port open. The base station is used to store the vacuum cleaner and to open and clean the vacuum cleaner. The base station is provided with an abutment corresponding to the dust cup cover on the departure path of the vacuum cleaner leaving the storage position. The dust cup cover includes: a cover body, which is rotatably covered at the dust cup cleaning port; and a closing mechanism, which is provided on the cover body and corresponds to the abutment, having: a movable end that can move relative to the cover body in the closing direction after being abutted by the abutment, and a closing end that can be driven by the movable end to push the cover body in the closing direction.

[0028] The beneficial effects of the above solution are as follows: Because the closing mechanism is located on the dust cup lid of the vacuum cleaner rather than on the base station, the closing mechanism only needs to be closed by the base station's contact force (external force) when the vacuum cleaner leaves the station. In other scenarios, such as vacuuming and cleaning, the closing mechanism does not need to be contacted by external force. Therefore, the closing mechanism can remain in a normal, non-pressurized state for a long time, effectively extending its service life. Moreover, the structure is simple and can close the lid stably and reliably. Furthermore, the base station's contact component only needs to contact the closing mechanism when the vacuum cleaner leaves the station. In other scenarios, such as vacuuming and cleaning, the contact component does not need to contact the closing mechanism. Therefore, the base station's contact component can remain in a normal, non-pressurized state for a long time, effectively extending its service life. Moreover, the structure is simple and can close the lid stably and reliably.

[0029] Preferably, in this invention, the dust cup cover further includes: a clearance area, capable of accommodating at least a portion of the contact surface of the contact member during cleaning, and spaced a certain distance from the contact member, so that the contact member of the base station avoids the cleaning and opening rotation range of the cover opening body; as the vacuum cleaner leaves the base station, the clearance area moves away from the contact member, the movable end contacts the contact member, and drives the closing end to push against the closing cover body. The clearance area on the vacuum cleaner may not be provided on the dust cup cover, for example, it may be provided near the battery pack (including the primary cleaning cover and the bottom cover) of the dust cup cover, forming a recessed area corresponding to the contact member on the surface of the battery pack.

[0030] Preferably, in this invention, the clearance area on the dust cup cover is a recessed area near the opening and closing hinge of the cover body. This recessed area includes, but is not limited to: an area formed between the two rotating lugs of the cover body, an area formed above the hinge of the cover body, or an area formed below the hinge of the cover body. The closer to the closing hinge, the easier it is to close the cover quickly. In this solution, the base station's contact member does not contain any driving component; the driving component is located in the closing mechanism of the dust cup cover.

[0031] Preferably, in this invention, the closing mechanism includes: a movable cover movably mounted on the cover body, an elastic element installed between the movable cover and the cover body, and a limiting element restricting the range of motion of the movable cover. The elastic element buffers the impact force of the contact element on the dust cup cover along the closing path during entry and exit. The movable cover or the inner end of the elastic element that contacts or is close to the cover body can serve as the closing end. When the cover is not closed, the elastic element does not need to move (leave its initial position or come into contact with the base station and be subjected to force). Therefore, when the cover is not closed, the elastic element can be in a natural, uncompressed state or in a state with very little compression, thus not negatively affecting the lifespan of the elastic element and the closing mechanism. In this invention, "or" indicates selecting at least one of at least two options.

[0032] Preferably, in this invention, the movable cover is configured such that, during entry and exit from the station, a ramp is provided on the upper and lower sides of the corresponding abutment to guide the abutment from the side of the movable cover (relative movement; in reality, the movable cover moves during entry and exit while the abutment remains stationary) into the middle area of ​​the outer side of the movable cover. This prevents the abutment from getting stuck or even jammed on the side of the movable cover and reduces the abutment force exerted by the abutment on the movable cover in the non-closing direction, concentrating the abutment force on the closing direction. Furthermore, chamfers can be added at the corners of the movable cover to further facilitate the smooth entry of the abutment into the middle area of ​​the outer side of the movable cover. The middle area refers to the area where the abutment force is most advantageous for closing the cover.

[0033] Preferably, in this invention, the spatial position of the abutting component on the base station is fixed, and its spatial position when abutting the dust cup cover does not exceed its spatial position when not abutting. The abutting component is a self-rotating wheel or a fixed component. A fixed spatial position means that the position of the abutting component in the three-dimensional space remains unchanged. Even if the wheel rotates, its overall spatial position and posture remain unchanged, without movement or swinging to other spatial positions during abutment. When the abutting component is a fixed component, it does not even rotate and cannot move. Fixed components do not rotate and have no pivot, making the structure more stable and reliable. The wheel rotates to minimize rolling friction, not to close the cover.

[0034] Preferably, in this invention, the fixing member is disposed above the clearing opening of the base station body and protrudes from the surface of the base station body that contacts the cover body; or, the fixing member is a corner area on the outer surface of the clearing opening of the base station body. Since the abutment member only needs to apply external force to the closing mechanism when the vacuum cleaner leaves the station, and when the vacuum cleaner is lifted away by the user, the user will naturally push the vacuum cleaner towards the base station based on the guide rail of the base station (which is widely used in the prior art), the abutment member can be a fixed corner area on the base station housing that matches the closing mechanism, without needing to protrude particularly from the outer surface of the base station. The corner area can abut against the closing mechanism when leaving the station.

[0035] Preferably, in this invention, the abutment and the dust cup lid are in rolling contact; the rolling element is disposed on the dust cup lid or the abutment, and the rolling element includes, but is not limited to, rollers and balls. This minimizes friction when the abutment contacts the lid-closing mechanism.

[0036] Preferably, in this invention, the surface of the abutment member is provided with a removable, impact-resistant, and friction-resistant protective layer. This further reduces wear and tear and facilitates user maintenance, making it particularly suitable for situations where the abutment member is a fixed component. Attached Figure Description

[0037] Figure 1 This is a schematic diagram of the vacuuming system according to an embodiment of the present utility model;

[0038] Figure 2 This is a partial structural schematic diagram of the dust collection system involved in an embodiment of the present utility model;

[0039] Figure 3 This is a partial structural diagram of the vacuum cleaner body according to an embodiment of the present utility model;

[0040] Figure 4 This is a cross-sectional view of the vacuum cleaner body in the closed state according to an embodiment of the present utility model;

[0041] Figure 5 This is a cross-sectional view of the vacuum cleaner body in the open state according to an embodiment of the present utility model;

[0042] Figure 6 This is a cross-sectional view of the vacuum cleaner body in the open state according to an embodiment of the present utility model, wherein (a) is the closed state and (b) is the open state;

[0043] Figure 7 This is an exploded view of the primary clearing cover, sealing component, and closing mechanism involved in the embodiments of this utility model;

[0044] Figure 8 This is an exploded view of part of the structure of the vacuum cleaner body and the base station involved in the embodiment of this utility model;

[0045] Figure 9 This is a partial structural diagram of the vacuum cleaner body according to an embodiment of the present utility model;

[0046] Figure 10 This is a partial structural diagram of the base station involved in an embodiment of the present utility model. Figure 1 ;

[0047] Figure 11 This is a partial structural diagram of the base station involved in an embodiment of the present utility model. Figure 2 ;

[0048] Figure 12 This is a partial structural diagram (a) of the vacuum cleaner body involved in the embodiment of the present utility model and a corresponding diagram (b) of its relationship with the abutting part;

[0049] Figure 13 This is a cross-sectional view of the vacuum cleaner body in the storage position on the base station and with the cover closed, according to an embodiment of the present utility model.

[0050] Figure 14 This is a cross-sectional view of the vacuum cleaner body in the storage position on the base station and in the open state according to the embodiment of this utility model;

[0051] Figure 15 This is a cross-sectional view of the vacuum cleaner body being stopped and closed by the base station during the departure process of the vacuum cleaner body according to the embodiment of this utility model. Detailed Implementation

[0052] The specific implementation scheme of the vacuum cleaner involved in this utility model will be described in detail below with reference to the accompanying drawings.

[0053] <Example>

[0054] like Figures 1-11 As shown, the vacuuming system 1000 includes a vacuum cleaner 100 and a base station 200. The base station 200 is used to store the vacuum cleaner 100 and to open and clean the vacuum cleaner 100. The vacuum cleaner 100 is used to collect dirt from the surface to be cleaned and has a vacuuming state and a cleaning state. In the vacuuming state, the vacuum cleaner 100 is separated from the base station 200, and based on the vacuuming negative pressure, the vacuum cleaner 100 can independently collect dirt from the surface to be cleaned. In the cleaning state, the vacuum cleaner 100 is stored by the base station 200, and after the cleaning negative pressure is activated, the base station 200 can remove the dirt collected by the vacuum cleaner 100 from the vacuum cleaner 100. The base station 200 is used to store the vacuum cleaner 100 and to open and clean the vacuum cleaner 100.

[0055] In this embodiment, a cordless handheld vacuum cleaner 100 is used. The vacuum cleaner 100 includes a main body 10, an extension tube 20, and a nozzle 30. The main body 10 generates negative pressure to suck up and collect dirt from the surface to be cleaned. The rear end of the extension tube 20 is detachably connected to the main body 10, extending the suction range of the main body 10. The nozzle 30 is mounted on the front end of the extension tube 20, facing and contacting the surface to be cleaned, guiding the negative pressure to suck up dust, hair, and other dirt from the surface.

[0056] like Figures 3-5 As shown, the vacuum cleaner body 10 includes a housing 11, an electric fan 12, a battery pack 13, a primary dust collection unit 14, a secondary dust collection unit 15, a sealing component 16, and a cover closing mechanism 17.

[0057] The housing 11 is used to mount the electric fan 12, the battery pack 13, the primary dust collection unit 14, and the secondary dust collection unit 15. The housing 11 is provided with a handle 11-1 for the user to hold.

[0058] The electric fan 12 is used to generate negative pressure, thereby providing suction to form an intake airflow. Its air inlet is located near the upper part (including the top) of the primary dust collection unit 14 and the secondary dust collection unit 15, and away from the lower part (including the bottom) of the primary dust collection unit 14 and the secondary dust collection unit 15.

[0059] The battery pack 13 is used to power the vacuum cleaner 100. In this embodiment, the battery pack 13 powers the electric fan 12, the extension tube 20, and the nozzle 30. Arc-shaped, elongated sliders 13-1 are fixed to the left and right sides of the bottom of the battery pack 13.

[0060] The primary dust collection unit 14 is used for dust-air separation and dirt collection. In this embodiment, the primary dust collection unit 14 is a cyclone separator dust cup, which can separate large ash (high volume / density) from the intake airflow and collect it at the bottom of the cup through cyclone separation. The primary dust collection unit 14 includes a primary dust chamber 14-1, a cup bottom cover 14-2, and a primary cleaning cover 14-3.

[0061] The primary dust chamber 14-1 is formed between the inner wall of the cup body 14-1a and the outer wall of the steel mesh 14-1b and the secondary dust collection unit 15. The shape of the primary dust chamber 14-1 (enclosed by the inner wall of the cup body 14-1a) can be a cylindrical shape with a circular cross-sectional profile, or a cylindrical shape with a non-circular cross-sectional profile, such as a straight line instead of an arc in the cross-sectional profile, or an arc with a radius inconsistent with other parts.

[0062] In this invention, the bottom of the dust chamber (both the two-stage chamber / cone / cup) corresponds to the place where dirt accumulates / remains due to its own weight when the dust is being vacuumed; correspondingly, the top surface A of the dust chamber is the side facing the bottom of the dust chamber, that is, the top corresponds to the airflow entry point.

[0063] The cup bottom cover 14-2 is installed at the bottom of the primary dust chamber 14-1, and the inner part of the cup bottom cover 14-2 is arranged around the inner ring of the outer contour (one ring of the inner wall). The radial height of the inner part of the cup bottom cover 14-2 is approximately 4mm. Let the area enclosed by the outer contour of the bottom of the primary dust chamber 14-1 be the cross-sectional area of ​​the bottom of the primary dust chamber 14-1. A portion of the cross-sectional area of ​​the bottom of the primary dust chamber 14-1 will be blocked by the cup bottom cover 14-2, and the remaining area forms the primary cleaning opening 14-1c. The cross-sectional area (inner surface) of the bottom of the primary dust chamber 14-1 is greater than or equal to 60% of the cross-sectional area of ​​the bottom of the primary dust chamber 14-1. After closing, the cup bottom cover 14-2 and the primary cleaning cover 14-3 are sealed together by a sealing element. In this embodiment, as shown... Figures 4-6 As shown, the outer surface of the upper side of the cup bottom cover 14-2 is recessed inward (in the thickness direction) and extends downward to form a recess 14-2a, making the primary cleaning port 14-1c form a near-circular shape with a portion of its upper part cut off. In this embodiment, the cup bottom cover 14-2 is fixedly installed at the bottom of the primary dust chamber 14-1 and cannot be rotated. In this embodiment, a clearance area 14-2b is formed on the cup bottom cover 14-2, specifically the recessed area in the recess 14-2a located between the two rotating ears 14-3a. This clearance area 14-2b can accommodate at least a portion of the contact surface of the contact member 220 on the base station 200 during cleaning, and is spaced a certain distance from the contact member 220. The contact member 220 in this position can avoid the cleaning opening rotation range of the primary cleaning cover 14-3.

[0064] like Figures 3-8As shown, the primary cleaning cover 14-3 is rotatably mounted on the cup bottom cover 14-2 and can be opened and closed over the primary cleaning opening 14-1c. Two rotating lugs 14-3a on the upper part of the primary cleaning cover 14-3 are spaced apart at the recess 14-2a of the cup bottom cover 14-2, and the two rotating lugs 14-3a can rotate around two rotating shafts 14-3b mounted on the cup bottom cover 14-2. Corresponding to the primary cleaning opening 14-1c, the primary cleaning cover 14-3 is also a near-circular shape with a portion of its upper part cut off, and a circumferential section extends from the lower part of the primary cleaning cover 14-3 to form a cover buckle 14-4. The inner protrusion of the cover buckle 14-4 forms an L-shaped latch that matches the cover lock 14-5 on the outer surface of the cup body 14-1a.

[0065] The lid lock 14-5 is located on the outer bottom of the cup body 14-1a. In the suction state, it engages with the lid buckle 14-4, locking the primary cleaning lid 14-3 and thus sealing the primary cleaning port 14-1c. The lid lock 14-5 contains a spring-loaded element, such as... Figures 4-8 As shown, the left end of the cover lock 14-5 serves as the unlocking end. When pressed by an external force, the right end can be lifted away from the outer wall of the cup body 14-1a, thereby unlocking the cover buckle 14-4 and allowing the first-level clearing cover 14-3 to be rotated away from the closed position by an external force (e.g., base station negative pressure).

[0066] The secondary dust collection unit 15 is used to further separate and collect the dust and gas separated by the primary dust collection unit 14 during the suction state. In this embodiment, the secondary dust collection unit 15 is a cyclone separator cone (secondary cone) located within the primary dust collection unit 14, downstream of the airflow during the suction state. The upper and middle sections of the secondary dust collection unit 15 are at least partially located within the steel mesh 14-1b, and the lower section (including the bottom) extends beyond the steel mesh 14-1b and reaches the primary cleaning cover 14-3. During the suction state, the secondary dust collection unit 15 is connected to the steel mesh 14-1b and the primary dust collection unit 14 only through its upper suction inlet. The secondary dust collection unit 15 can separate the suction airflow entering the suction inlet through the steel mesh 14-1b and the fine dust it carries. The fine dust (low volume / density) is separated and accumulates at the bottom of the cone, while the clean airflow flows to the electric fan 12. The secondary dust collection unit 15 includes a secondary dust chamber 15-1 and a secondary cleaning cover 15-2.

[0067] The secondary dust chamber 15-1 is a hollow cone shape, wider at the top and narrower at the bottom. The suction inlet is located at the upper part of the secondary dust chamber 15-1, and is closer to the steel mesh 14-1b than the secondary cleaning cover 15-2. A secondary cleaning port 15-1a is located at the bottom of the secondary dust chamber 15-1, and the area of ​​the secondary cleaning port 15-1a is equal to the cross-sectional area (inner surface) of the bottom of the secondary dust chamber 15-1. Figures 4-5As shown, the secondary cleaning port 15-1a is located inside the primary dust collection chamber 14-1, and is at least 2mm closer to the top surface A of the primary dust collection chamber 14-1 than the primary cleaning port 14-1c; in this embodiment, it is approximately 5mm closer. This arrangement allows the secondary cleaning port 15-1a to have a larger exposed area relative to the primary dust collection chamber 14-1. Approximately 5mm of the bottom of the inner wall of the cup body 14-1a can reflect airflow into the secondary cleaning port 15-1a, guiding the dust gas discharged from the secondary cleaning port 15-1a into the base station 200.

[0068] In this embodiment, the length directions of the primary dust chamber 14-1 and the secondary dust chamber 15-1 are basically parallel to the horizontal direction, with an included angle of about 0°.

[0069] like Figures 4-8 As shown, the secondary cleaning cover 15-2 is formed in the middle of the primary cleaning cover 14-3 and is closable at the secondary cleaning opening 15-1a, and can be opened and closed by the primary cleaning cover 14-3. In this embodiment, the secondary cleaning cover 15-2 and the primary cleaning cover 14-3 are integrally formed, and both are collectively referred to as cleaning covers. The side of the secondary cleaning cover 15-2 facing the secondary dust chamber 15-1 is the opening side of the cover, and a hollow region 15-2a with a certain depth (in the thickness direction of the cover) is formed on the opening side of the secondary cleaning cover 15-2. This hollow region 15-2a is connected to the secondary cleaning opening 15-1a and can collect and store the dirt (fine ash) collected in the secondary dust chamber 15-1. After the cleaning cover is opened, the dirt is poured out, similar to the ash collected by a bucket being tilted and poured out, thereby removing most of the dirt in the secondary dust collection unit 15. The hollow region 15-2a has a pouring opening on the opening side of the cover for disposing of waste. In this embodiment, the depth of the hollow region 15-2a in the thickness direction of the secondary cleaning cover 15-2 is 7-8 mm; the hollow region 15-2a occupies approximately 2 / 5 of the maximum usable volume of the secondary cleaning cover 15-2, and the pouring opening of the hollow region 15-2a covers at least 1 / 2 of the area of ​​the secondary cleaning opening 15-1a. The maximum usable volume of the secondary cleaning cover 15-2 is the volume after the hollow region 15-2a of the secondary cleaning cover 15-2 is completely filled into a solid structure. In addition to serving as the main tool for removing waste within the secondary dust collection unit 15, the hollow region 15-2a can further enhance the turbulence of the primary dust collection chamber 14-1 to clean the remaining fine dust within the secondary cleaning opening 15-1a.

[0070] like Figures 6-7As shown, when the secondary cleaning cover 15-2 is in the cleanup state and has not yet left the closed position, the lower surface of the hollow area 15-2a is slightly inclined upwards from the bottom to the opening side (the closer to the opening side, the higher), with an upward inclination angle of about 20° relative to the horizontal plane. This guides the fine dust to the bottom of the hollow area 15-2a, preventing external forces (generated by contact and collision) during the vacuum cleaner 100 placement of the base station 200 from causing the dust to backflow along the opening of the hollow area 15-2a to the upper part of the secondary dust chamber 15-1 (opposite direction of the cleaning port). Before the secondary cleaning cover 15-2 leaves the closed position, the dust is kept as much as possible in the hollow area 15-2a, while minimizing obstruction to the dust pouring port.

[0071] like Figure 9 As shown, to prevent large dust particles such as hair and wires from getting caught on the secondary dust collection unit 15 during cleaning, making it difficult to clean or even hindering the closing of the cover after cleaning (e.g., the drooping part getting stuck between the cover and the cleaning opening, affecting the seal or preventing the cover from closing), the secondary dust collection unit 15 is designed such that, in the cleaning state, and before the secondary cleaning cover 15-2 has left the closed position, the junction of the secondary dust chamber 15-1 and the secondary cleaning cover 15-2 on the uppermost outer contour of the secondary dust collection unit 15 is at the lowest point. This allows the large dust particles above the secondary dust collection unit 15 to be guided to the lowest point by their own weight, and enables these particles to fall (easily slip) from the secondary dust collection unit 15 as the secondary cleaning cover 15-2 rotates, smoothly being removed into the primary dust chamber 14-1 or the base station 200. Specifically, the secondary cleaning cover 15-2 is configured such that, in the cleaning state and before the secondary cleaning cover 15-2 leaves the closed position, a guide slope 15-2b is formed on its upper side, sloping downwards towards the secondary dust chamber 15-1. In this embodiment, the secondary cleaning cover 15-2 is shaped like a frustum of a cone, with the radius of the outer surface of the frustum decreasing as it approaches the secondary dust chamber 15-1. The secondary dust chamber 15-1 is configured such that, in the cleaning state and before the secondary cleaning cover 15-2 leaves the closed position, a chamber-side guide slope is formed at the cleaning opening, sloping downwards towards the secondary cleaning cover 15-2. In this embodiment, the bottom radius of the secondary dust chamber 15-1 is smaller than that of the upper and middle parts, and the edge radius at the bottom opening gradually decreases further, becoming smaller as it approaches the secondary cleaning cover 15-2.

[0072] like Figures 6-9As shown, the sealing component 16 includes a primary seal 16-1 and a secondary seal 16-2, which are respectively disposed on the primary and secondary dust collection units 14 and 15. These seals are used to interference seal the contact areas between the primary dust chamber 14-1 and the primary cleaning cover 14-3, and between the secondary dust chamber 15-1 and the secondary cleaning cover 15-2, when the cover is closed. In this embodiment, both the primary seal 16-1 and the secondary seal 16-2 are soft, elastic sealing rings with the same interference fit. The primary seal 16-1 and the secondary seal 16-2 are configured to deform and seal the contact areas when the cover is closed and compressed, and to allow the cleaning cover to smoothly leave the closed position (the sealed position) when the cover is opened. Because the primary cleaning cover 14-3 has a larger radius and the secondary cleaning cover 15-2 has a smaller radius, the primary cleaning cover 14-3 rotates with a longer arc (further distance) and faster speed at the same turning angle. Furthermore, the primary dust chamber 14-1 contains more and heavier contaminants, which will press against the primary cleaning cover 14-3 from the inside out. After the primary cleaning cover 14-3 is unlocked by the base station, the primary seal 16-1 restores its position, pushing the primary cleaning cover 14-3 away from the primary dust chamber 14-1. The primary cleaning cover 14-3, under the combined pressure of the restoring force of the primary seal 16-1 and the contaminants inside, will slightly open initially. At this point, because the secondary cleaning cover 15-2's rotation arc is too short, it remains in a closed, sealed state. Only after the base station's 200 negative pressure rotates the primary cleaning cover 14-3 to a larger angle does the secondary cleaning cover 15-2 move out of its closed position, opening the secondary cleaning port 15-1a. Then, the primary cleaning cover 14-3 rotates to approximately 30° (relative to the plane of the cleaning opening) and stops. In this embodiment, the primary seal 16-1 and the secondary seal 16-2 are respectively installed on the inner sides of the primary cleaning cover 14-3 and the secondary cleaning cover 15-2.

[0073] Based on the sealing member 16, in the suction state, the secondary cleaning cover 15-2 and the primary cleaning cover 14-3 respectively seal and close the primary cleaning port 14-1c and the secondary cleaning port 15-1a. In the cleaning state, the primary cleaning cover 14-3 can be rotated to a certain angle (e.g., 3°–5°), and further rotation will cause the secondary cleaning cover 15-2 to leave the closed position, thereby exposing the primary cleaning port 14-1c and the secondary cleaning port 15-1a, which then face downwards (tilted or directly downwards) to expose the pouring opening. Exposure can be complete, partial, or tilted, etc. Figure 14 As shown in this embodiment, in the cleaning state, after the base station negative pressure is activated, the opening angles of both the primary cleaning cover 14-3 and the secondary cleaning cover 15-2 are approximately 30°, with the pouring spout tilted downwards. The tilted opening also facilitates airflow. Furthermore, although the cup bottom cover 14-2 forms a step of approximately 4mm at the bottom of the primary dust chamber 14-1, the presence of airflow allows the cleaning airflow to carry and sweep away dirt over the step, leaving the vacuum cleaner 100 and entering the base station 200.

[0074] A closing mechanism 17 is provided on the primary storage cover 14-3, which is movable in the closing direction. The closing mechanism 17 can move relative to the outer surface of the primary storage cover 14-3 and approach and push the primary storage cover 14-3 in the closing direction after being subjected to external force.

[0075] The closing mechanism 17 is mounted on the secondary cleaning cover 15-2, corresponding to the abutment member 220. Since the secondary cleaning cover 15-2 and the primary cleaning cover 14-3 are integrally formed, when the closing mechanism 17 is pushed by the abutment member 220, it transmits the pushing force to both the secondary cleaning cover 15-2 and the primary cleaning cover 14-3. The closing mechanism 17 has a movable end that can move relative to the cleaning cover in the closing direction after being abutted by the abutment member 220, and a closing end that can be driven by the movable end to push the cleaning cover in the closing direction. As the vacuum cleaner 100 leaves the base station 200, the clearance area 14-2b moves away from the abutment member 220, the movable end contacts the abutment member 220, and drives the closing end to push and close the cleaning cover.

[0076] Specifically, in this embodiment, the closing mechanism 17 includes a movable cover 17-1, an elastic element 17-2, and a limiting element 17-3.

[0077] The movable cover 17-1 is movably mounted on the secondary cleaning cover 15-2. The exposed end of the movable cover 17-1 away from the secondary cleaning cover 15-2 serves as the movable end. The movable cover 17-1 or the elastic member 17-2 contacts or approaches the inner end of the secondary cleaning cover 15-2 as the closing end. Further, in this embodiment, the movable cover 17-1 is configured such that, when the vacuum cleaner 100 enters and leaves the station, a ramp 17-1a is provided at the upper and lower sides of the abutment member 220, which can guide the abutment member 220 from the side of the movable cover 17-1 into the middle area 17-1b of the exposed end of the movable cover 17-1 (the movable cover 17-1 moves, the abutment member 220 remains stationary). This prevents the abutment member 220 from getting stuck on the side of the movable cover 17-1 and reduces the abutment force of the abutment member 220 on the movable cover 17-1 in the non-closing direction, so that the abutment force of the abutment member 220 is concentrated in the closing direction. The middle area 17-1b refers to the area where the resistance force is most advantageous.

[0078] The elastic element 17-2 is installed between the movable cover 17-1 and the secondary cleaning cover 15-2. The elastic element 17-2 is a spring, and the axis of the spring is aligned with the thickness direction of the primary cleaning cover 14-3. It can provide slight axial upward support to the movable cover 17-1 so that the movable cover 17-1 is in a position that protrudes relative to the outer surface of the primary cleaning cover 14-3 when it is not pushed by an external force.

[0079] The limiting member 17-3 is used to limit the range of motion of the movable cover 17-1 (the distance of motion relative to the secondary cleaning cover 15-2 in the closing direction). The inner end of the side wall of the movable cover 17-1 extends into the slot 17-3a of the limiting member 17-3. The slot 17-3a is provided on the secondary cleaning cover 15-2 and extends along the closing direction, limiting the closest distance of the movable cover 17-1 to the secondary cleaning cover 15-2 in the closing direction. The limiting member 17-3 also includes a baffle 17-3b, which is installed on the outer end of the slot 17-3a, limiting the farthest distance of the movable cover 17-1 from the secondary cleaning cover 15-2 in the closing direction.

[0080] like Figures 1-2 As shown, the base station 200 is matched with the vacuum cleaner 100, allowing the vacuum cleaner 100 to stop, store / arrange and charge the vacuum cleaner 100, and can generate a cleaning airflow based on the electric fan 12 to open the vacuum cleaner 100 for cleaning, removing dirt contained in the vacuum cleaner body 10. The base station 200 includes a base station body 210, a base station electric fan, a contact member 220 and a charger.

[0081] like Figure 1 and 10 As shown in Figure 15, the base station body 210 has a hollow structure with a placement area 211 at the top. The outlet of the placement area 211 is connected to a dust bag, and a base station filter unit for further cleaning airflow is located below the dust bag. The base station filter unit is connected to the base station exhaust duct, through which clean airflow is discharged. The placement area 211 matches the vacuum cleaner body 10, and a sealing ring 211a is provided on its outer surface to seal around the bottom cover 14-2 of the contact cup, thereby sealing and connecting the dust collection unit 14 with the base station body 210 in the cleaning state. A protruding push block 211b is provided on the placement area 211. When the dust cup 113 enters the placement area 211, the push block 211b acts as an unlocking element, corresponding to the top-pressing cover lock 14-5, thus unlocking the primary cleaning cover 14-3.

[0082] like Figures 10-11 As shown, two entry / exit guide grooves 212 are formed on the base station body 210 above the placement area 211, corresponding to the two sliders 13-1 of the battery pack 13, for guiding and positioning the vacuum cleaner 100 to approach and move downwards into the placement area 211 or upwards out of the placement area 211 along the base station body 210. The path of the vacuum cleaner 100 entering the placement area 211 forms the entry path, and the path of the vacuum cleaner 100 leaving the placement area 211 forms the exit path. Figure 13 As shown, after the vacuum cleaner 100 enters along the base station body 210 and is stably placed in the placement area 211, the vacuum cleaner 100 is in the storage position.

[0083] The base station electric fan is used to create a negative pressure and airflow for cleaning, thereby transferring the dirt collected in the vacuum cleaner body 10 to the dust bag through the airflow.

[0084] The abutment 220 is positioned on the departure path of the vacuum cleaner 100 as it leaves the storage position, corresponding to the closing mechanism 17. In this embodiment, the abutment 220 is positioned above the emptying opening 211c of the placement area 211, and includes a shaft 221 and a wheel 222. The wheel 222 can rotate around the shaft 221. The rotation of the wheel 222 minimizes the rolling friction between the abutment 220 and the closing mechanism 17, and is not intended to close the lid in the closing direction. Even when the wheel 222 rotates, the overall three-dimensional spatial position of the abutment 220 remains unchanged; it will not move or swing to other spatial positions with the closing mechanism 17. Regardless of whether the vacuum cleaner 100 is in the departure state, the entry state, or the storage position, the three-dimensional spatial position of the abutment 220 remains constant.

[0085] The charger's output terminal is a spring pin. When the vacuum cleaner body 10 is placed on the base station 200, the contact piece of the battery pack 13 contacts the spring pin to connect and start charging.

[0086] like Figures 1-15 As shown, based on the above structure, the specific working process of the vacuum system 1000 provided in this embodiment is as follows:

[0087] When the user is vacuuming, the vacuum cleaner 100 is used independently (separated from the base station 20), and the nozzle 30 is pointed towards the surface to be cleaned. The electric fan 12 is turned on, so that the vacuum cleaner 100 is in vacuuming mode, and the dirt is collected into the primary dust collection unit 14 and the secondary dust collection unit 15.

[0088] After cleaning, the user turns off the electric fan 12 to stop vacuuming, and moves the vacuum cleaner 100 to the vicinity of the base station 200. Using the handle 11-1, the user lifts the vacuum cleaner 100 and guides the sliders 13-1 on both sides of the battery pack 13 into the two guide slots 212 on the base station 200. This allows the vacuum cleaner 100 to slide down the entry path into the placement area 211. As it slides down, the movable cover 17-1 of the closing mechanism 17 moves to contact the abutment 220. Under the pushing force of the abutment 220, the elastic element 17-2 is compressed, and the movable cover 17-1 retracts inward until it is basically flush with the outer surface of the primary cleaning cover 14-3. The vacuum cleaner 100 then smoothly passes through the area where the abutment 220 is located and finally slides down to the storage position. When in the storage position, both the cleaning lid and the closing mechanism 17 face the cleaning opening 211c; the clearance area 14-2b above the closing mechanism 17 faces the abutment 220 and is spaced a certain distance away from it, so the dust collection unit 14 does not contact the abutment 220. Simultaneously, the lid lock 14-5 is pressed down by the push block 211b, the primary cleaning lid 14-3 is unlocked and slightly open, while the secondary cleaning lid 15-2 remains closed. At this time, the large dust particles in the primary dust collection unit 14 accumulate at the primary cleaning lid 14-3, most of the fine dust particles in the secondary dust collection unit 15 accumulate in the hollow area 15-2a of the secondary cleaning lid 15-2, and the remaining fine dust particles gather near the secondary cleaning opening 15-1a.

[0089] Subsequently, the base station's electric fan is turned on by the user or automatically activated by a sensor. The primary cleaning cover 14-3 rotates approximately 30° under the negative pressure of the cleaning process, and the secondary cleaning cover 15-2 rotates approximately 30° along with it. At this point, both the primary and secondary cleaning covers 14-3 are open, leaving the dust chamber. During the opening of the secondary cleaning cover 15-2, long hair, threads, and other long dust particles slide down from above the secondary dust chamber 15-1. Simultaneously, the hollow area 15-2a pours out the fine dust contained in the secondary dust collection unit 15 through the pouring port. Simultaneously, the negative pressure of the base station's electric fan opening the covers creates a cleaning airflow that enters the base station 200 from the vacuum cleaner 100 through the cleaning opening 211c. Affected by the hollow area 15-2a and the bottom 5mm area of ​​the inner wall of the cup body 14-1a, the cleaning airflow forms disturbances and sweeps the turbulence inside the secondary cleaning port 15-1a and the hollow area 15-2a. The turbulence carries the residual fine dust away from the secondary dust collection unit 15 and pushes the large dust away from the primary dust collection unit 14, so that these dirts leave the vacuum cleaner 100 and enter the cleaning opening 211c of the base station 200, where they are collected by the dust bag, thereby achieving cleaning.

[0090] After the cleaning is completed, the base station electric fan automatically shuts down, the negative pressure of the cleaning disappears, and the first-level cleaning cover 14-3 rotates to be close to the first-level dust chamber 14-1, which drives the second-level cleaning cover 15-2 to rotate to be close to the second-level dust chamber 15-1.

[0091] Subsequently, when the user needs to use the vacuum cleaner 100 again, they can lift the vacuum cleaner 100 upwards along the base station 200 using the handle 11-1, causing the vacuum cleaner 100 to slide upwards along the exit path and leave the placement area 211. As it slides upwards, the avoidance area 14-2b moves away from the abutment 220, and the movable cover 17-1 of the closing mechanism 17 moves upwards to contact the abutment 220. Under the pushing force of the abutment 220, the elastic element 17-2 is compressed, and the inner ends of the movable cover 17-1 and the elastic element 17-2 push the cleaning cover in the closing direction, causing the cleaning cover to move in the closing direction. The cover buckle 14-4 then engages with the cover lock 14-5, locking the primary cleaning cover 14-3 in the closed position, and the secondary cleaning cover 15-2 is also locked in the closed position. At the same time, the active cover 17-1 moves inward to be basically flush with the first-level cleaning cover 14-3, and then smoothly passes through the area where the abutment 220 is located, and finally the vacuum cleaner 100 slides up to leave the base station 200.

[0092] The above embodiments are merely illustrative examples of the technical solution of this utility model. The vacuum cleaner involved in this utility model is not limited to the content described in the above embodiments, but is subject to the scope defined by the claims. Any modifications, additions, or equivalent substitutions made by those skilled in the art based on these embodiments are within the scope of protection claimed by the claims of this utility model.

[0093] In the above embodiments, the closing mechanism is located on the secondary cleaning cover and occupies the upper half of the secondary cleaning cover. In this invention, the closing mechanism can also be located on the primary cleaning cover or the primary dust collection unit, avoiding the area where the secondary cleaning cover is located, thus allowing for a larger hollow space in the secondary cleaning cover. For example, the closing mechanism can be moved to the periphery (upper, lower, left, or right) of the secondary cleaning cover, or it can be configured as a ring surrounding the secondary cleaning cover, or it can be a non-complete ring, consisting of only upper and lower or left and right arc-shaped areas. Furthermore, the upper and lower areas can also be other shapes besides arcs, such as strips, discs, or hemispherical (or smaller) spheres. After the vacuum cleaner leaves the station, it is okay if the closing mechanism is accidentally touched while vacuuming, as it is for closing the cover. The key is to ensure smooth and stable entry, exit, and closing of the cover.

[0094] In the above embodiments, the cup bottom cover is partially disposed on the inner surface of the primary dust chamber, forming a step and obstructing a portion of the bottom cross-sectional area of ​​the primary dust chamber. In this invention, the cup bottom cover can also be entirely disposed outside the primary dust chamber, thus avoiding the formation of a step and obstruction, making the bottom cross-sectional area of ​​the primary dust chamber equal to the area of ​​the primary cleaning opening, which can be circular or non-circular. Corresponding recesses and clearance areas are also formed on the external cup bottom cover.

[0095] In addition, in the above embodiments, the cup bottom cover is fixedly installed at the bottom of the primary dust chamber and cannot be rotated. In this embodiment, the cup bottom cover can also be rotatably installed at the bottom of the primary dust chamber, and the corresponding cup bottom cover can also be rotated away from the primary dust chamber.

[0096] Furthermore, in the above embodiments, the clearance area is formed on the bottom cover of the cup. In this invention, the clearance area can also be formed on the battery pack, with a recessed area corresponding to the abutment provided on the outer shell of the battery pack.

[0097] In addition, in the above embodiments, the base station has a built-in electric fan. In this invention, the base station may also omit the electric fan and instead utilize the electric fan of a vacuum cleaner to provide negative pressure cleaning.

[0098] Furthermore, in the above embodiments, the abutment is a self-rotating wheel. In this invention, the abutment can also be a fixed component, such as a fixed cam. The surface of the abutment can also be provided with a removable, impact-proof, and friction-resistant protective layer. This can further reduce wear and tear and facilitate user maintenance, making it particularly suitable for situations where the abutment is a fixed component.

[0099] In addition, in the above embodiments, in order to achieve rolling contact between the abutment and the dust cup cover, the rolling element is a wheel of the abutment. In this utility model, the rolling element can also be disposed on the dust cup cover, and the rolling element includes, but is not limited to, rollers and ball bearings.

[0100] Furthermore, in this invention, the primary clearance cover is not limited to the angle shown in the figure; rather, the suction and base station limit its opening angle. After leaving the station, it can be manually unlocked to open to approximately 90°.

[0101] Furthermore, in this invention, a turbulence-inducing plate can be installed at the bottom of the primary dust chamber near the inner wall or on the inner wall. The fewer the number of turbulence-inducing plates, the better. Preferably, one turbulence-inducing plate is installed above the bottom of the primary dust chamber during the cleaning state. The thickness, height, and length of this turbulence-inducing plate correspond to the circumferential, radial, and axial directions of the primary dust chamber, respectively. For example, the thickness of the turbulence-inducing plate is approximately 2mm, the height is approximately 10mm, and the length is approximately 5mm. This small-sized structure can minimize the negative impact on the cyclone separation of the primary dust chamber during the suction state, while further enhancing the turbulence after the cover is opened during the cleaning state, which is beneficial for cleaning. The inner diameter of the primary dust chamber is typically above 100mm.

Claims

1. A vacuum cleaner, having a vacuuming state for collecting dirt from surfaces to be cleaned, and a cleaning state for removing the collected dirt, including: The primary dust collection unit includes: a primary dust chamber and a primary cleaning cover rotatably disposed at the cleaning port at the bottom of the primary dust chamber; as well as A secondary dust collection unit is disposed within the primary dust collection unit; it includes: a secondary dust chamber, and a secondary cleaning cover formed on the primary cleaning cover and covering the cleaning opening at the bottom of the secondary dust chamber; Its features are: Specifically, the side of the secondary cleaning cover facing the secondary dust chamber is designated as the cover opening side, and the cover opening side forms a hollow area that is connected to the cleaning port of the secondary dust chamber and can hold dust. The cleaning port of the secondary dust chamber is located inside the primary dust chamber, and is at least 2mm closer to the top surface of the primary dust chamber than the cleaning port of the primary dust chamber. In the vacuuming state, the secondary cleaning cover and the primary cleaning cover respectively seal and close the cleaning ports of the primary dust chamber and the secondary dust chamber; In the cleaning state, the primary cleaning cover can be rotated and drive the secondary cleaning cover away from the closed position, thereby exposing the cleaning ports of the primary dust chamber and the secondary dust chamber.

2. The vacuum cleaner according to claim 1, characterized in that: in, The depth of the hollow region in the thickness direction of the secondary clearing cover is not less than 5 mm.

3. The vacuum cleaner according to claim 1, characterized in that: in, The hollow area occupies at least 1 / 3 of the maximum usable volume of the secondary clearance cover. The maximum usable volume of the secondary clearance cover is the volume after the hollow area of ​​the secondary clearance cover is completely filled with a solid structure.

4. The vacuum cleaner according to claim 1, characterized in that: in, The hollow area covers at least half of the area of ​​the secondary dust chamber cleaning opening; the opening angles of both the primary and secondary cleaning covers are less than 40°.

5. The vacuum cleaner according to claim 1, characterized in that: in, The secondary dust collection unit is configured such that, in the cleaning state and before the secondary cleaning cover leaves the closed position, the junction of the secondary dust chamber and the secondary cleaning cover on the uppermost outer contour of the secondary dust collection unit is located at the lowest point.

6. The vacuum cleaner according to claim 5, characterized in that: in, The secondary cleaning cover is configured such that, in the cleaning state and before the secondary cleaning cover leaves the closed position, a cover-side guide slope is formed above it, tilting downward toward the secondary dust chamber. The secondary dust chamber is configured such that, in the cleaning state and before the secondary cleaning cover leaves the closed position, a chamber-side guide slope is formed at the cleaning opening, tilting downward toward the secondary cleaning cover.

7. The vacuum cleaner according to claim 1, characterized in that: in, The cleaning port of the secondary dust chamber is at least 5 mm closer to the top surface of the primary dust chamber than the cleaning port of the primary dust chamber.

8. The vacuum cleaner according to claim 1, characterized in that: in, The primary clearance cover is provided with a closing mechanism that is movable in the closing direction. This closing mechanism is movable relative to the outer surface of the primary clearance cover and, when subjected to external force, moves closer to and pushes the primary clearance cover in the closing direction.

9. The vacuum cleaner according to claim 1, characterized in that: in, The primary clearance cover and the secondary clearance cover are integrally formed, or the secondary clearance cover is fixed on the primary clearance cover.

10. A vacuuming system, characterized in that, include: The vacuum cleaner according to any one of claims 1 to 9; and The base station houses the vacuum cleaner and performs a clean-up of the vacuum cleaner.

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