Cleaning device

Abstract

The utility model relates to the technical field of dust collectors, and particularly discloses a cleaning device, which comprises a self-cleaning mechanism used for switching the cleaning device from a normal working state to a self-cleaning state when being operated by a user; the air flow forwards passes through the filter in the normal working state, and at least part of the air flow reversely impacts the filter in the self-cleaning state; the motor is used for generating negative pressure to form airflow; the dust cup is used for collecting dirt; the filter is positioned in the dust cup; the cleaning device further comprises an inlet blocking piece and a dust outlet blocking piece, wherein the inlet blocking piece is arranged at the dust inlet; in a normal working state, the dust inlet is opened by the inlet plugging piece; and in the self-cleaning state, the dust inlet is sealed by the inlet plugging piece. In the self-cleaning state, the dust inlet is closed by the inlet blocking piece, the situation that dust in the dust cup carried by reverse airflow is sprayed out of the dust inlet can be effectively prevented, the dust spraying phenomenon is avoided, and the user experience is improved.

Description

[0001] The present application claims priority to the Chinese patent application No. 202510034261.3 filed on January 9, 2025, and entitled "Cleaning device", the whole content of which is incorporated herein by reference. TECHNICAL FIELD

[0002] The present application relates to the technical field of dust collectors, and in particular to a cleaning device. BACKGROUND

[0003] In the field of cleaning devices, especially devices like dust collectors, conventional configurations have components such as filters, motors and dust cups. When normally operating, the motor operates to generate negative pressure, which promotes the formation of airflow, and the airflow passes through the filter along the path and sucks the dust and other debris into the dust cup for collection. However, as the use time accumulates, the dust adsorbed on the filter increases, which will eventually cause the filter to be clogged, thereby affecting the cleaning effect and device performance.

[0004] To solve this problem, cleaning devices with self-cleaning mechanisms have emerged and are widely used in barrel-type dust collectors. Through simple operation of the self-cleaning mechanism, the cleaning device can be switched from a normal working state to a self-cleaning state, at which time the airflow at least partially impacts the filter in reverse, thereby achieving cleaning of the filter.

[0005] However, when the self-cleaning mechanism is applied to a handheld dust collector, due to the dust cup size being much smaller than that of a barrel-type dust collector, and the dust cup being directly connected to the suction head, during the self-cleaning process, the dust collector motor sucks in air from the outside (air supplementing port), causing the air pressure and airflow inside the dust cup to increase, and the dust in the dust cup is easily ejected from the suction head, i.e., the "dust ejection" phenomenon, which seriously affects the cleaning effect.

[0006] Based on this, the present application provides a cleaning device to improve the prior art. CONTENT OF THE INVENTION

[0007] The purpose of the present application is to provide a cleaning device to avoid the "dust ejection" phenomenon.

[0008] To achieve the above purpose, the present application provides a cleaning device, comprising:

[0009] a self-cleaning mechanism for switching the cleaning device from a normal working state to a self-cleaning state when operated by a user;

[0010] a filter, in the normal working state, the airflow passes through the filter in a forward direction, and in the self-cleaning state, the airflow at least partially impacts the filter in a reverse direction;

[0011] a motor for generating negative pressure to form the airflow;

[0012] a dust cup for collecting dirt; the filter is located in the dust cup;

[0013] The cleaning device further comprises:

[0014] An inlet blocking member is arranged at the dust inlet;

[0015] In the normal working state, the inlet blocking member opens the dust inlet;

[0016] In the self-cleaning state, the inlet blocking member closes the dust inlet.

[0017] In the self-cleaning state, the inlet blocking member closes the dust inlet, which can effectively prevent the reverse airflow from carrying the dust in the dust cup out of the dust inlet, avoid the "dust spraying" phenomenon, and improve the user experience.

[0018] As a further improvement of the utility model, the inlet blocking member comprises:

[0019] A flap can be driven to rotate to open or close the dust inlet;

[0020] A counterweight is fixedly connected with the flap, and the counterweight is configured to:

[0021] In the self-cleaning state, the counterweight overcomes the resistance of the airflow at the dust inlet to drive the flap to move and close the dust inlet, and in the normal working state, the flap is driven to open the dust inlet by the impact of the airflow at the dust inlet.

[0022] The opening and closing of the dust inlet are realized by the rotation of the flap, which is simple in structure and reliable in action, and ensures the correct opening and closing of the dust inlet in different working states. Meanwhile, the cooperation of the counterweight and the flap makes the opening and closing process of the dust inlet automatic without manual intervention, improves the use convenience of the cleaning device.

[0023] As a further improvement of the utility model, the inlet blocking member further comprises:

[0024] A metal piece is arranged at the dust inlet;

[0025] A magnet is arranged on the flap and corresponds to the position of the metal piece.

[0026] The arrangement of the metal piece and the magnet provides auxiliary force for the flap to close the dust inlet in the self-cleaning state, enhances the closing effect, and ensures that the flap can more stably and accurately close the dust inlet in the self-cleaning state.

[0027] As a further improvement of the utility model, the flap has a plate-shaped part and a ring-shaped part extending outward from one side of the plate-shaped part, a counterweight cavity accommodating the counterweight is formed in the ring-shaped part; the other side of the flap is provided with a groove for placing the magnet.

[0028] As a further improvement of the utility model, the inlet plugging member comprises:

[0029] The flap can be driven to rotate to open or close the dust inlet, at least part of the flap is ferromagnetic material;

[0030] The electromagnet structure is fixedly arranged at the dust inlet, and the electromagnet structure is configured to:

[0031] In the self-cleaning state, the flap is adsorbed by the magnetic field to close the dust inlet.

[0032] In the self-cleaning state, the electromagnet structure is energized to generate a magnetic field. The ferromagnetic material part in the flap is adsorbed by the magnetic field, overcoming the resistance of the airflow and other forces, driving the flap to rotate to close the dust inlet, thereby preventing the dust carried by the reverse airflow from being ejected from the dust inlet, avoiding the "dust spraying" phenomenon.

[0033] As a further improvement of the utility model, the cleaning device further comprises:

[0034] The suction head accessory;

[0035] The pipe connecting piece is fixedly connected with the dust cup and is used for connecting the suction head accessory, the dust inlet is formed on the pipe connecting piece, and the flap is rotatably connected to the pipe connecting piece.

[0036] As a further improvement of the utility model, the flap has a flap rotating shaft, and the pipe connecting piece has a rotating shaft mounting part;

[0037] Both ends of the flap rotating shaft are provided with a pair of mounting inclined surfaces, and the pair of mounting inclined surfaces gradually approach along the mounting direction of the flap rotating shaft;

[0038] The pipe connecting piece further has a guide part, the guide part is located outside the rotating shaft mounting part, the guide part is formed with a pair of guide inclined surfaces matched with the pair of mounting inclined surfaces, and the pair of guide inclined surfaces gradually approach along the mounting direction of the flap rotating shaft.

[0039] The guide inclined surface and the mounting inclined surface at the end of the flap rotating shaft are matched, providing guiding and centering functions when the flap rotating shaft is mounted to the rotating shaft mounting part, ensuring that the flap rotating shaft can be accurately and smoothly mounted in place.

[0040] As a further improvement of the utility model, a plurality of reinforcing ribs are arranged on the outer side of the rotating shaft of the turning plate.

[0041] The arrangement of the plurality of reinforcing ribs can significantly improve the bending and torsion resistance of the rotating shaft of the turning plate, so that the turning plate is not prone to deformation or fracture when bearing a large force and torque, and the service life of the turning plate is prolonged, and the turning plate can still work stably and reliably in long-term use.

[0042] As a further improvement of the utility model, a stop wall is arranged in the dust cup, and the stop wall is located in the rotating direction of the inlet blocking member away from the dust inlet, so as to limit the maximum rotation angle of the inlet blocking member.

[0043] By arranging the stop wall in the dust cup, the maximum rotation angle of the inlet blocking member (turning plate) in the direction away from the dust inlet can be effectively limited, and the turning plate is prevented from interfering with the dust filtering air duct due to excessive rotation, thereby causing air flow resistance.

[0044] As a further improvement of the utility model, the turning plate is provided with a sealing ring matched with the shape of the dust inlet; in the self-cleaning state, the sealing ring is attached to the outer edge of the dust inlet. BRIEF DESCRIPTION OF DRAWINGS

[0045] Figure 1 The structure explosion diagram of the cleaning device provided in an embodiment of the utility model is shown in the figure;

[0046] Figure 2 The local sectional view of the cleaning device provided in an embodiment of the utility model in the normal working state is shown in the figure;

[0047] Figure 3 The local sectional view of the cleaning device provided in an embodiment of the utility model in the self-cleaning state is shown in the figure;

[0048] Figure 4 The structure schematic view of the inlet blocking member provided in an embodiment of the utility model is shown in the figure;

[0049] Figure 5 The structure schematic view of the turning plate provided in an embodiment of the utility model is shown in the figure;

[0050] Figure 6 The installation schematic view of the inlet blocking member provided in an embodiment of the utility model is shown in the figure.

[0051] In the figure: 100, cleaning device; 110, self-cleaning mechanism; 120, filter; 130, motor; 150, dust cup; 180, inlet blocking piece; 1110, suction head accessory; 1120, pipe connecting piece; 1130, decorative cover; 141, dust filtering air duct; 142, self-cleaning air duct; 151, dust inlet; 181, flap; 182, counterweight; 183, metal piece; 184, magnet; 1811, plate-shaped part; 1812, ring-shaped part; 1813, counterweight chamber; 1814, flap rotating shaft; 18141, mounting inclined surface; 18142, reinforcing rib; 1121, rotating shaft mounting part; 1122, guide part; 11221, guide inclined surface; 1511, stop wall. DETAILED DESCRIPTION

[0052] The utility model will be described in detail below in combination with the embodiments shown in the drawings. However, the embodiments do not limit the utility model, and the changes in mechanism, method or function made by those skilled in the art based on the embodiments are included in the protection scope of the utility model.

[0053] The terms for indicating spatial relative positions used herein, such as "upper", "lower", "left", "right", "front", "back", and the like, are used for the purpose of facilitating description to describe the relationship of one feature relative to another feature as shown in the drawings. It can be understood that the terms for indicating spatial relative positions can be intended to include different orientations other than the orientations shown in the drawings, and should not be understood as limiting the claims. In addition, the description word "horizontal" used herein is not completely equivalent to along the direction perpendicular to the direction of gravity, and a certain angle of inclination is allowed.

[0054] Figures 1 to 3 The cleaning device 100 provided by the present disclosure is shown, which comprises:

[0055] The self-cleaning mechanism 110 is used to switch the cleaning device 100 from a normal working state to a self-cleaning state when operated by a user;

[0056] The filter 120 is used for the airflow to pass through the filter 120 in a forward direction in the normal working state, and the airflow at least partially impacts the filter 120 in a reverse direction in the self-cleaning state;

[0057] The motor 130 is used to generate negative pressure to form the airflow;

[0058] The dust cup 150 is used to collect dirt; and the filter 120 is located in the dust cup 150;

[0059] The cleaning device 100 further comprises:

[0060] An inlet blocking member 180 is arranged at the dust inlet 151;

[0061] In the normal working state, the inlet blocking member 180 opens the dust inlet 151;

[0062] In the self-cleaning state, the inlet blocking member 180 closes the dust inlet 151.

[0063] The self-cleaning mechanism 110 is a control mechanism for realizing the self-cleaning function of the cleaning device 100. A user triggers the device to switch from the normal working state to the self-cleaning state by operating the self-cleaning mechanism 110. In the normal working state, the air flow passes through the filter 120 along the conventional dust filtering path, and the filter 120 blocks dust, debris, and the like outside, thereby ensuring that the discharged air is relatively clean. Once the cleaning device 100 switches to the self-cleaning state, the direction of the air flow is adjusted, and at least part of the air flow reversely impacts the filter 120, thereby cleaning the accumulated attachments on the filter 120 by the impact force of the reverse air flow, and restoring the performance of the filter 120.

[0064] It can be understood that, in the normal working state, the motor 130 operates to generate negative pressure, so that external air together with dust and other pollutants is sucked from the suction head accessory 1110 and enters the dust cup 150 through the dust inlet 151. After the air flow containing the pollutants enters the dust cup 150, the larger dust particles in the air flow directly fall to the bottom of the dust cup 150 under the action of gravity. Then, the air flow continues to rise and passes through the filter 120, and the filter 120 intercepts the remaining fine dust particles, so that they remain in the dust cup 150. In the self-cleaning state, because a large amount of dust has accumulated in the dust cup 150 (if the dust is not cleaned out of the dust cup 150), the reverse air flow further stirs the dust accumulated in the dust cup 150 after passing through the filter 120, and drives the dust to move together with the direction of the air flow. In the absence of the inlet blocking member 180, the air flow with the dust is sprayed out of the suction head accessory 1110 connected to the dust inlet 151, forming a "dust spraying" phenomenon.

[0065] The inlet blocking member 180 is a component installed at the dust inlet 151 of the cleaning device 100, and functions to open or close the dust inlet 151 in different working states. In the normal working state, the inlet blocking member 180 is in an open state, so that the pollutants can smoothly enter the inside of the dust cup 150; and in the self-cleaning state, the dust inlet 151 is closed to prevent the reverse air flow of the self-cleaning from flowing out of the dust inlet 151.

[0066] The import blocking piece 180 can be actively controlled, such as electric or pneumatic, or passively controlled, such as being opened or closed by the dust filtering air duct 141 or the self-cleaning air duct 142, and the implementation of the import blocking piece 180 is not limited herein.

[0067] In the embodiment, the import blocking piece 180 is passively controlled and is opened or closed by the dust filtering air duct 141 or the self-cleaning air duct 142.

[0068] Specifically, the import blocking piece 180 includes:

[0069] A flap 181, which can be driven to rotate to open or close the dust inlet 151;

[0070] A counterweight 182, which is fixedly connected with the flap 181 and is configured to:

[0071] In the self-cleaning state, the counterweight 182 overcomes the resistance of the airflow at the dust inlet 151 to drive the flap 181 to move to block the dust inlet 151, and in the normal working state, the counterweight 182 is impacted by the airflow at the dust inlet 151 to drive the flap 181 to open the dust inlet 151.

[0072] The flap 181 is a movable component in the import blocking piece 180 and can rotate around an axis to open or close the dust inlet 151. In the normal working state, the flap 181 opens the dust inlet 151 to allow the dirt to smoothly enter the dust cup 150, and in the self-cleaning state, the flap 181 closes the dust inlet 151 to prevent the self-cleaning airflow from flowing out of the dust inlet 151.

[0073] The counterweight 182 is fixedly connected with the flap 181, and its function is to use its weight and inertia characteristics to affect the movement of the flap 181 in different working states to ensure that the flap 181 can accurately and timely open or close the dust inlet 151. In the embodiment, the counterweight 182 is made of heavy metal or plastic, and its weight can be determined by experimental test or calculated reasonably, and the determination method of the weight of the counterweight 182 is not limited herein. The counterweight 182 is fixedly connected with the flap 181 by screws, glue or buckles to ensure that the two are always relatively stationary during movement.

[0074] It can be understood that the airflow resistance at the dust inlet is different in different working states. In the self-cleaning state, the airflow direction inside the dust cup changes, and the counterweight 182 can overcome the resistance of the airflow at the dust inlet 151 under the reverse impact of the airflow due to its own inertia and weight, and drive the flap 181 to move in the direction of closing the dust inlet 151. When the moment generated by the gravity and inertia of the counterweight 182 is greater than the opening moment generated by the airflow on the flap 181, the flap 181 will rotate and tightly fit at the dust inlet 151, realizing effective closure of the dust inlet 151 and preventing dust from being sprayed out. In the normal working state, the negative pressure generated by the motor 130 causes external air to be sucked into the dust cup 150 together with dust and other pollutants from the suction head accessory 1110. At this time, the airflow at the dust inlet 151 generates a forward impact force on the flap 181, and the counterweight 182 drives the flap 181 to move in the direction of opening the dust inlet 151 under the impact of the airflow and its own inertia. When the opening moment generated by the impact force of the airflow is greater than the closing moment generated by the gravity and inertia of the counterweight 182, the flap 181 will rotate and stabilize in the open position, allowing the pollutants to smoothly enter the inside of the dust cup 150.

[0075] The opening and closure of the dust inlet 151 are realized by the rotation of the flap 181, which is simple in structure and reliable in action, ensuring the correct opening and closing of the dust inlet 151 in different working states. At the same time, the cooperation of the counterweight 182 and the flap 181 makes the opening and closing process of the entire dust inlet 151 unnecessary for manual intervention, which can be automatically completed with the switching of the working state of the cleaning device 100, improving the use convenience of the cleaning device 100.

[0076] Further, the inlet blocking piece 180 further comprises:

[0077] A metal piece 183 is arranged at the dust inlet 151.

[0078] A magnet 184 is arranged on the flap 181 and corresponds to the position of the metal piece 183.

[0079] Referring to Figure 4 The metal piece 183 is a component of the inlet blocking piece 180 and is arranged at the dust inlet 151. Its role is to interact with the magnet 184 to provide auxiliary force for the flap 181 to close the dust inlet 151 in the self-cleaning state, enhancing the closing effect to ensure that the flap 181 can more stably and accurately close the dust inlet 151 in the self-cleaning state. In this embodiment, the metal piece 183 is a metal sheet.

[0080] The magnet 184 is installed on the flap 181 by means of adhesion, embedding or fixing support, etc. The position of the magnet 184 corresponds to the position of the metal piece 183 at the dust inlet 151, so as to ensure that the magnet 184 and the metal piece 183 can generate effective magnetic force during the movement of the flap 181. The magnet 184 is usually made of permanent magnetic material, such as neodymium iron boron, ferrite, etc. The magnet 184 has high magnetic performance and stability, and can maintain magnetism for a long time. At the same time, the magnet 184 is installed on the flap 181 and moves with the flap 181, so that it is not easy to adsorb metallic substances possibly carried in the air flow to the magnet 184.

[0081] In some embodiments, the positions of the metal piece 183 and the magnet 184 can be interchanged, i.e. the metal piece 183 is arranged on the flap 181, and the magnet 184 is arranged on the dust inlet 151. The specific installation structure can be adjusted accordingly, which will not be described here.

[0082] Further, the flap 181 has a plate-shaped portion 1811 and a ring-shaped portion 1812 extending outward from one side of the plate-shaped portion 1811, and a counterweight cavity 1813 for accommodating the counterweight 182 is formed in the ring-shaped portion 1812. The other side of the flap 181 is provided with a groove for placing the magnet 184.

[0083] Referring to Figure 5 The flap 181 has a plate-shaped structure as a whole, i.e. the plate-shaped portion 1811 is the main component of the flap 181 and constitutes the basic form of the flap 181. The ring-shaped portion 1812 is a ring-shaped structure extending outward from one side of the plate-shaped portion 1811, and a counterweight cavity 1813 for accommodating the counterweight 182 is formed in the center of the ring-shaped portion 1812. In this embodiment, the ring-shaped portion 1812 and the plate-shaped portion 1811 can be integrally formed or fixed by a connecting structure, which is not limited here. The counterweight cavity 1813 is used to place the counterweight 182, and the shape of the counterweight cavity 1813 can be adjusted to adjust the center of gravity of the flap 181. Correspondingly, the counterweight 182 can be installed in the counterweight cavity 1813 by means of welding, screw connection or adhesion, etc. The fixing method of the counterweight 182 is not limited here.

[0084] The magnet 184 is arranged in the groove on the other side of the flap 181 (i.e. the side opposite to the side where the ring-shaped portion 1812 is located). The groove enables the magnet 184 to be firmly installed on the flap 181 and correspond to the metal piece 183 at the dust inlet 151, so as to realize the magnetic force assisted closing function of the flap 181.

[0085] Further, the flap 181 is provided with a sealing ring matching the shape of the dust inlet 151. In the self-cleaning state, the sealing ring is attached to the outer edge of the dust inlet 151.

[0086] The sealing ring is an elastic element installed on the flap 181, and its shape matches that of the dust inlet 151. In the self-cleaning state, the sealing ring can tightly fit the outer edge of the dust inlet 151, further enhancing the sealing effect of the flap 181 on the dust inlet 151, preventing dust from leaking from the gap between the flap 181 and the dust inlet 151.

[0087] In another embodiment, the inlet blocking member 180 adopts an active control mode, using an electromagnet 184 to drive the flap 181 to rotate, rather than relying on passive air flow power or gravity and other natural factors, which can more accurately and reliably control the opening and closing of the dust inlet 151.

[0088] Specifically, the inlet blocking member 180 includes:

[0089] The flap 181 can be driven to rotate to open or close the dust inlet 151, and at least part of the flap 181 is made of ferromagnetic material.

[0090] The electromagnet 184 structure is fixedly arranged near the dust inlet 151, and is configured to:

[0091] In the self-cleaning state, a magnetic field is generated to attract the flap 181 to close the dust inlet 151.

[0092] At least part of the flap 181 being made of ferromagnetic material means that ferromagnetic material is selected as the raw material of the flap 181, or that ferromagnetic material components are inlaid at key positions of the flap 181, such as positions interacting with the electromagnet 184. For example, the flap 181 can be entirely punched from a ferromagnetic metal plate, or ferromagnetic material sheets or blocks can be pasted or welded on the surface of the flap 181, and the specific structure of the flap 181 is not limited here.

[0093] The electromagnet 184 is a device that generates a magnetic field through electric current, and the magnetic field of the electromagnet 184 can generate an attractive or repulsive force on ferromagnetic material, thereby driving the flap 181 to rotate, with fast response speed and high control accuracy, and being able to achieve fast and accurate control of the movement of the flap 181. In this embodiment, the electromagnet structure is electrically connected with the self-cleaning mechanism 110, and automatically energized when switched to the self-cleaning state

[0094] The electromagnet 184 structure includes a coil, a core and other components, and is fixedly arranged near the dust inlet 151. When it is necessary to drive the flap 181 to rotate, the coil of the electromagnet 184 is energized to generate a magnetic field, which interacts with the ferromagnetic material in the flap 181 to generate a driving torque, causing the flap 181 to rotate around its rotation shaft and achieve the opening or closing of the dust inlet 151.

[0095] The parameters of the electromagnet 184 structure (such as the number of turns of the coil, the current size, the shape and size of the core, etc.) need to be set according to the size, weight, moment of inertia of the flap 181, and the required suction force, etc. The structure of the electromagnet 184 is not limited here.

[0096] In the normal working state, the electromagnet 184 structure is not powered and does not generate a magnetic field. At this time, the flap 181 is in the position of opening the dust inlet 151 under the action of the impact of the airflow, so that the air containing dust can smoothly enter the dust cup 150. In the self-cleaning state, the electromagnet 184 structure is powered and generates a magnetic field. The magnetic field attracts the ferromagnetic material part in the flap 181, overcomes the resistance of the airflow and other forces, drives the flap 181 to rotate, and makes it close the dust inlet 151, thereby preventing dust carried by the reverse airflow from being sprayed out of the dust inlet 151, and avoiding the "dust spraying" phenomenon.

[0097] In the embodiment, the cleaning device 100 further comprises:

[0098] a suction head accessory 1110;

[0099] a pipe connector 1120 fixedly connected with the dust cup 150 and used for connecting the suction head accessory 1110, the dust inlet 151 being formed on the pipe connector 1120, and the flap 181 being rotatably connected to the pipe connector 1120.

[0100] The suction head accessory 1110 is the front end part of the cleaning device 100, which is used to contact the cleaning surface and suck in dust and other dirt. It usually includes various shapes and functions of the suction head to adapt to the needs of different cleaning scenes. The suction head accessory 1110 can be connected to the pipe connector 1120 in a detachable manner, so as to replace different types of suction heads as needed.

[0101] The dust inlet 151 is the entrance for air containing dust to enter the dust cup 150 in the cleaning device 100. It is located on the pipe connector 1120 and is the only way for the airflow to enter the dust cup 150 from the suction head accessory 1110. Generally, the pipe connector 1120 will be arranged to have a certain inclined angle or a streamlined channel to reduce the resistance and vortex of the airflow when entering the dust cup 150, and improve the cleaning efficiency, and the dust inlet 151 is located at one end of the pipe connector 1120 connected to the dust cup 150.

[0102] Further, the flap 181 has a flap rotating shaft 1814, and the pipe connector 1120 has a rotating shaft mounting portion 1121;

[0103] One end of the flap rotating shaft 1814 is provided with a pair of mounting inclined surfaces 18141 gradually approaching along the mounting direction of the flap rotating shaft 1814.

[0104] The pipe connector 1120 also has a guide portion 1122 located outside the pivot mounting portion 1121, which is formed with a pair of guide bevels 11221 that gradually converge along the mounting direction of the flap rotation axis 1814.

[0105] Referring to Figure 6 , the flap rotation axis 1814 is the axis of rotation of the flap 181, which is rotatably connected to the pipe connector 1120 through the flap rotation axis 1814, thereby realizing the opening and closing action of the dust inlet 151. The pivot mounting portion 1121 is the part of the pipe connector 1120 for mounting and supporting the flap rotation axis 1814, and the mounting bevels 18141 are a pair of bevels provided at both ends of the flap rotation axis 1814, which gradually converge along the mounting direction of the flap rotation axis 1814, mainly to facilitate the introduction and fixation of the flap rotation axis 1814 into the pivot mounting portion 1121 of the pipe connector 1120 during installation. Accordingly, the pipe connector 1120 is also provided with a guide portion 1122, and the guide bevels 11221 are a pair of bevels formed on the guide portion 1122, which gradually converge along the mounting direction of the flap rotation axis 1814. The guide bevels 11221 cooperate with the mounting bevels 18141 at the ends of the flap rotation axis 1814 to provide guidance and centering functions when the flap rotation axis 1814 is mounted to the pivot mounting portion 1121, ensuring that the flap rotation axis 1814 can be accurately and smoothly installed in place.

[0106] It can be understood that the mounting direction of the flap rotation axis 1814 refers to the direction in which the flap rotation axis 1814 is mounted to the pivot mounting portion 1121.

[0107] Further, the outer side of the flap rotation axis 1814 is arranged with a plurality of reinforcing ribs 18142.

[0108] The main function of the plurality of reinforcing ribs 18142 is to increase the strength and rigidity of the flap rotation axis 1814, preventing deformation or damage due to stress during use. In this embodiment, the flap rotation axis 1814 is made of plastic, and the reinforcing ribs 18142 are integrally formed with the flap rotation axis 1814 by setting corresponding rib structures in the injection mold.

[0109] The arrangement of the plurality of reinforcing ribs 18142 can significantly improve the bending and torsional resistance of the flap rotation axis 1814, making it less likely to deform or break when subjected to large forces and moments, which helps to prolong the service life of the flap 181 and ensures that it can still work stably and reliably in long-term use.

[0110] In the embodiment, the dust cup 150 is provided with a stop wall 1511 located in the rotation direction of the inlet blocking piece 180 away from the dust inlet 151 to limit the maximum rotation angle of the inlet blocking piece 180.

[0111] Referring to Figure 2 and Figure 3 , the stop wall 1511 is a structural wall arranged inside the dust cup 150 and located on the side close to the dust inlet 151 to limit the maximum rotation angle of the inlet blocking piece 180 (the flap 181). When the inlet blocking piece 180 is rotated to open to a certain angle, it will be in contact with and blocked by the stop wall 1511, so as to be unable to continue to rotate.

[0112] By arranging the stop wall 1511 inside the dust cup 150, the maximum rotation angle of the inlet blocking piece in the direction away from the dust inlet 151, that is, the maximum rotation angle of the flap 181 in the direction away from the dust inlet 151, can be effectively limited, so as to prevent the flap 181 from interfering with the dust filtering air duct 141 due to excessive rotation and causing air flow resistance.

[0113] It should be understood that although the present specification is described in terms of embodiments, each embodiment does not contain only one independent technical solution, and the description manner of the specification is only for the sake of clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0114] The above embodiments are only used to illustrate the technical solutions of the present application but not limit the present application. Although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or replaced equivalently without departing from the spirit and scope of the technical solutions of the present application.

Claims

1. A cleaning device, comprising: a self-cleaning mechanism for switching the cleaning device from a normal working state to a self-cleaning state when operated by a user; a filter, through which air flows in a forward direction in the normal working state, and against which air flows in a reverse direction at least partially in the self-cleaning state; a motor for generating negative pressure to form the air flow; a dust cup for collecting dirt; the filter is located in the dust cup; characterized in that the cleaning device further comprises: an inlet blocking member arranged at an inlet opening; in the normal working state, the inlet blocking member opens the inlet opening; in the self-cleaning state, the inlet blocking member closes the inlet opening.

2. The cleaning device of claim 1, wherein, the inlet blocking member comprises: a flap that can be driven to rotate to open or close the inlet opening; a counterweight fixedly connected to the flap, the counterweight being configured to: in the self-cleaning state, overcome the resistance of the air flow at the inlet opening to drive the flap to move to close the inlet opening, and in the normal working state, be impacted by the air flow at the inlet opening to drive the flap to open the inlet opening.

3. The cleaning device of claim 2, wherein, the inlet blocking member further comprises: a metal piece arranged at the inlet opening; a magnet arranged on the flap and corresponding to the position of the metal piece.

4. The cleaning device of claim 3, wherein, the flap has a plate portion and a ring portion extending outward from one side of the plate portion, a counterweight chamber accommodating the counterweight being formed in the ring portion; the other side of the flap is provided with a groove for placing the magnet.

5. The cleaning device of claim 1, wherein, the inlet blocking member comprises: a flap that can be driven to rotate to open or close the inlet opening, at least a portion of the flap being ferromagnetic material; an electromagnet structure fixedly arranged at the inlet opening, the electromagnet structure being configured to: in the self-cleaning state, generate a magnetic field to attract the flap to close the inlet opening.

6. The cleaning device according to any one of claims 2-5, characterized in that, the cleaning device further comprises: a suction head accessory; a tube connecting piece fixedly connected to the dust cup and used to connect the suction head accessory, the inlet opening being formed on the tube connecting piece, and the flap being rotatably connected to the tube connecting piece.

7. The cleaning device of claim 6, wherein, the flap has a flap rotation shaft, and the tube connecting piece has a rotation shaft mounting portion; both ends of the flap rotation shaft are provided with a pair of mounting inclined surfaces that gradually converge along the mounting direction of the flap rotation shaft; the tube connecting piece further has a guide portion located outside the rotation shaft mounting portion, the guide portion being formed with a pair of guide inclined surfaces that gradually converge along the mounting direction of the flap rotation shaft and cooperating with the pair of mounting inclined surfaces.

8. The cleaning device of claim 7, wherein, a plurality of reinforcing ribs are arranged at intervals on the outside of the flap rotation shaft.

9. The cleaning device according to any one of claims 2-8, characterized in that, a stop wall is arranged in the dust cup, the stop wall being located in the rotation direction of the inlet blocking member away from the inlet opening to limit the maximum rotation angle of the inlet blocking member.

10. The cleaning device according to any one of claims 2-8, characterized in that, The turning plate is provided with a sealing ring matching the shape of the dust inlet; in the self-cleaning state, the sealing ring is attached to the outer edge of the dust inlet.

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