Cleaning device

Abstract

The invention provides cleaning equipment which comprises a dust collection assembly and a wet cleaning accessory provided with a negative pressure air duct and a matching groove, and the dust collection assembly comprises a dust collection machine body, a negative pressure source assembly, a main air duct, a dust cup and a secondary air duct. One end of the main air duct is butted with the negative pressure source assembly, and the other end forms a dust suction port; the dust cup is arranged on a path of the main air duct, and the dust suction port is convexly arranged on the dust cup to form a suction nozzle; the secondary air duct extends along the air inlet direction of the dust cup, one end of the secondary air duct is butted with the negative pressure source assembly, and the other end is butted with the negative pressure air duct; when the dust collection assembly is connected with the wet cleaning accessory, the secondary air channel is in butt joint communication with the negative pressure air channel, and the suction nozzle is inserted into the matching connection groove. The longitudinal space on the peripheral side of the dust cup is fully utilized by the secondary air duct, so that the radial size of the dust collection assembly is prevented from being increased, and the whole slim design of the cleaning equipment is realized; the suction nozzle is matched with the matching groove, so that the situation that the radial size of the dust collector body is increased due to the fact that a connecting structure is independently arranged is avoided, and meanwhile the suction nozzle can be sealed.

Description

Technical Field

[0001] This application relates to the field of cleaning equipment technology, and specifically to a cleaning device. Background Technology

[0002] In the field of cleaning equipment, in order to integrate dry vacuuming with wet cleaning functions (such as wet cleaning function), the vacuuming component needs to be securely installed on the wet cleaning accessory (such as floor scrubber). This usually requires the installation of negative pressure source components (such as motor and fan) and wet air ducts connected to the wet cleaning accessory inside the vacuuming component.

[0003] In related technologies, the wet air duct is usually laterally (radially) extended outward from the outside of the vacuuming component. Although this layout can reduce the air duct path inside the vacuuming component, it will increase the radial (width) dimension of the device. It will also inevitably lead to the addition of the connection structure between the vacuuming component and the wet cleaning attachment in the radial direction, which will further increase the radial dimension of the device and fail to meet the design concept of slim cleaning devices. Summary of the Invention

[0004] In view of this, the present application aims to provide a cleaning device to solve the problem that the cleaning devices in the prior art do not meet the requirements of a slim design.

[0005] This application provides a cleaning device, including a wet cleaning attachment and a vacuuming assembly. The wet cleaning attachment is used for wet cleaning of the surface to be cleaned and is provided with a negative pressure air duct and a connecting groove. The vacuuming assembly is configured to be detachably connected to the wet cleaning attachment, and the vacuuming assembly includes: Vacuum cleaner body; The negative pressure source component is located on the vacuum cleaner body; The main air duct is connected at one end to the negative pressure source component, and at the other end forms a dust suction port; A dust cup is disposed along the path of the main air duct, and the suction port protrudes from the dust cup to form a suction nozzle; The secondary air duct extends along the air inlet direction of the dust cup, with one end connected to the negative pressure source assembly and the other end connected to the negative pressure air duct. When the vacuuming assembly is connected to the wet cleaning accessory, the secondary air duct is connected to the negative pressure air duct, and the nozzle is inserted into the mating slot.

[0006] Thus, by setting up a detachable vacuuming component and a wet cleaning attachment, the vacuuming component can be used independently as a vacuum cleaner when not connected to the wet cleaning attachment, and when connected to the wet cleaning attachment, it performs wet cleaning. Furthermore, the vacuuming component can also be used as the operating handle for the entire cleaning device. By setting the secondary air duct to extend longitudinally along the air inlet direction of the dust cup, rather than laterally exiting the vacuum cleaner body, the secondary air duct fully utilizes the longitudinal space around the dust cup. This allows for the separation of dry and wet airflows without increasing the radial dimension of the vacuuming component, facilitating a slimmer overall design for the cleaning device. This also makes the vacuuming component more comfortable to hold, easier to operate, and easier to store. By protruding the suction port onto the dust cup to form a nozzle, which is inserted into the mating groove when the vacuuming component is connected to the wet cleaning attachment, the nozzle is fully utilized, avoiding the increase in the radial dimension of the vacuum cleaner body caused by a separate connection structure, while also sealing the nozzle.

[0007] In one embodiment, the wet cleaning accessory includes a floor brush assembly and a body assembly. One end of the body assembly is rotatably connected to the floor brush assembly, and the other end of the body assembly is provided with a mating surface for mating with the vacuuming assembly. The mating groove is provided on the mating surface, and the interface end of the negative pressure air duct is provided on the mating surface.

[0008] In one embodiment, the interface end of the negative pressure air duct protrudes from the mating surface, and when the vacuuming assembly is connected to the wet cleaning accessory, the interface end of the negative pressure air duct is inserted into the interface end of the secondary air duct.

[0009] In one embodiment, the interface end of the secondary air duct and the interface end of the negative pressure air duct form a shallow insertion fit, and the suction nozzle and the mating groove form a deep insertion fit.

[0010] In one embodiment, the secondary air duct abuts against the negative pressure air duct, and the suction nozzle is detachably and fixedly connected to the mating groove.

[0011] In one embodiment, the secondary air duct and the main air duct are arranged one in front of the other along the forward direction of the cleaning equipment, and the secondary air duct is located in front of the main air duct. The negative pressure port of the secondary air duct and the dust suction port are arranged in a front-to-back manner along the forward direction of the cleaning equipment, and the negative pressure port is located in front of the dust suction port. The interface end of the negative pressure air duct and the mating groove are arranged in a front-to-back manner along the forward direction of the wet cleaning accessory, and the interface end of the negative pressure air duct is located in front of the mating groove.

[0012] In one embodiment, the interface end of the secondary air duct is set approximately flush with the air inlet end of the dust cup near the dust suction port.

[0013] In one embodiment, the nozzle has a bent connection at one end near the dust cup, the bent connection is bent at an angle relative to the nozzle, and the bent connection is fixed to the air inlet end of the dust cup.

[0014] In one embodiment, after the vacuuming assembly is connected to the wet cleaning accessory, the nozzle is inserted into the mating slot to keep the vacuuming assembly and the wet cleaning accessory in a fixed connection.

[0015] In one embodiment, the wet cleaning attachment is fixed to the vacuuming assembly by inserting it along the longitudinal direction of the vacuuming assembly.

[0016] In one embodiment, during the connection of the vacuuming assembly and the wet cleaning attachment, the nozzle contacts the wet cleaning attachment before the interface end of the secondary air duct.

[0017] In one embodiment, the suction port and the negative pressure port of the secondary air duct face the same direction, or the airflow direction at the inlet of the main air duct and the secondary air duct is the same.

[0018] In one embodiment, the secondary air duct and the dust cup share a common sidewall, and the ratio of the cross-sectional area of ​​the secondary air duct to the cross-sectional area of ​​the dust cup is between 1 / 20 and 1 / 4.

[0019] In one embodiment, the cleaning device further includes a locking engagement structure for restricting the relative movement of the vacuuming assembly and the wet cleaning attachment in the separation direction after the vacuuming assembly is connected to the wet cleaning attachment; The separation direction is the direction in which the vacuuming component and the wet cleaning accessory move away from each other; The locking mechanism includes a locking element and a locking groove. The locking element is disposed on the wet cleaning accessory, and the locking groove is disposed on the vacuuming assembly. After the locking element and the locking groove are engaged, they are both located below the mating surface. The locking member is capable of elastic deformation in response to external force, and after the dust collection assembly is connected to the wet cleaning accessory, the locking member can be engaged in the locking groove.

[0020] In one embodiment, the locking member includes a pressing portion and a locking portion disposed on the pressing portion, the pressing portion being disposed on the wet cleaning accessory; After the vacuuming assembly and the wet cleaning attachment are connected in place, the locking part engages with the locking groove.

[0021] In one embodiment, the vacuuming assembly further includes an air duct switching mechanism configured to have at least a first state in a natural state and a second state in which the vacuuming assembly is connected to the wet cleaning attachment; The end of the main air duct furthest from the dust inlet is connected to the negative pressure source assembly via the air duct switching mechanism; the end of the secondary air duct furthest from the negative pressure air duct is connected to the negative pressure source assembly via the air duct switching mechanism. In the first state, the air duct switching mechanism connects the main air duct to the negative pressure source component and disconnects the secondary air duct from the negative pressure source component; in the second state, the air duct switching mechanism connects the secondary air duct to the negative pressure source component and disconnects the main air duct from the negative pressure source component. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the assembly of the cleaning equipment in one embodiment of this application.

[0023] Figure 2 This is a cross-sectional schematic diagram of a cleaning device in one embodiment of this application.

[0024] Figure 3 This is a schematic diagram showing the disassembled vacuuming assembly and wet cleaning attachment in one embodiment of this application.

[0025] Figure 4 This is a cross-sectional view of the vacuuming assembly and the wet cleaning accessory at the beginning of connection in one embodiment of this application.

[0026] Figure 5 for Figure 4 A magnified view of a portion of point C.

[0027] Figure 6 This is a cross-sectional view of the connection between the vacuuming assembly and the wet cleaning accessory in one embodiment of this application.

[0028] Figure 7 for Figure 6 A magnified view of a portion of point D.

[0029] Figure 8 This is a cross-sectional view of a vacuuming assembly and a wet cleaning accessory connected in place in one embodiment of this application.

[0030] Figure 9 for Figure 8 A magnified view of a portion of point E in the middle.

[0031] Figure 10 This is a cross-sectional schematic diagram of the dust collection assembly when the air duct switching mechanism is in the first state according to an embodiment of this application.

[0032] Figure 11 for Figure 10 A magnified view of a portion of point A in the middle.

[0033] Figure 12 This is a cross-sectional schematic diagram of the dust collection assembly when the air duct switching mechanism is in the second state according to one embodiment of this application.

[0034] Figure 13 for Figure 12 A magnified view of a portion of point B in the middle.

[0035] Figure label: 100. Vacuuming assembly; 110. Vacuum cleaner body; 120. Negative pressure source assembly; 130. Dust cup; 140. Main air duct; 141. Suction port; 142. Nozzle; 143. Bending connection; 150. Secondary air duct; 151. Negative pressure port; 160. Air duct switching mechanism; 161. Driven structure; 1611. Driven component; 1612. Reversing component; 1612a. First inclined surface; 162. Main air duct mating structure; 1621. First contact Surface; 1622, Second seal; 163, Secondary air duct mating structure; 1631, Second inclined surface; 1632, Second abutting surface; 1633, First seal; 163a, First mating part; 163b, Second mating part; 164, Elastic reset part; 165, Connector; 166, Guide; 167, Abutting mating surface; 170, Mounting base; 171, First end; 172, Second end; 1721, Through hole; 180, Discharge port; 200. Wet cleaning accessory; 201. Raised structure; 202. Body assembly; 203. Connecting groove; 204. Floor brush assembly; 205. Connecting surface; 206. Sealing structure; 207. Negative pressure air duct; 209. Locking part; 210. Locking groove; 211. Pressing part; 212. Locking part. Detailed Implementation

[0036] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0037] In the field of cleaning equipment, to enable the vacuuming assembly to be adapted to the wet cleaning attachment for combined wet cleaning functionality, the vacuuming assembly is typically designed to be detachably mounted on top of the wet cleaning attachment and also serve as an operating handle. In related technologies, the vacuuming assembly usually contains a dry air duct, a dust cup, and a negative pressure source assembly. When the vacuuming assembly is not connected to the wet cleaning attachment, it can be used independently as a vacuum cleaner. When connected to the wet cleaning attachment, switching to the wet air duct connects the same negative pressure source assembly to the wet air duct, thereby achieving the wet cleaning function. To arrange the necessary structures and paths within the limited space of the vacuuming assembly, the wet air duct is usually located separately on the outside of the vacuuming assembly, making the wet air duct laterally (radially outward) relative to the vacuuming assembly, thus reducing the path within the vacuuming assembly.

[0038] However, this arrangement of the wet air duct increases the radial (width) dimension of the vacuum assembly. Furthermore, additional radial connection structures (such as clips and latches) are needed to secure the vacuum assembly to the wet cleaning attachment, which further increases the radial dimension of the vacuum assembly, resulting in a short and stout overall shape. When the user holds the vacuum assembly as a handle, this short and stout shape is not conducive to gripping, makes pushing, pulling, and turning difficult, and is also inconvenient to store.

[0039] See Figures 1 to 3 This application provides a cleaning device, including a wet cleaning attachment 200 and a vacuuming assembly 100. The wet cleaning attachment 200 is used for wet cleaning of a surface to be cleaned (such as a floor), and it is provided with a negative pressure air duct 207 and a connecting groove 203. The vacuuming assembly 100 is configured to be detachably connected to the wet cleaning attachment 200. The vacuuming assembly 100 is generally elongated and can be used to perform dry vacuuming operations independently, or it can be detachably connected to the wet cleaning attachment 200 to perform wet cleaning operations in combination.

[0040] In this application, the longitudinal direction of the vacuuming assembly 100 refers to the direction in which the length of the main body of the vacuuming assembly 100 extends, and the transverse direction of the vacuuming assembly 100 refers to the direction perpendicular to the longitudinal direction. For ease of description, the longitudinal direction of the vacuuming assembly 100 is referred to as the longitudinal direction and the transverse direction of the vacuuming assembly 100 is referred to as the transverse direction in the following text.

[0041] See Figure 2 , Figure 4 and Figure 5Specifically, the vacuuming assembly 100 includes a vacuum cleaner body 110, a negative pressure source assembly 120, a main air duct 140, a dust cup 130, and a secondary air duct 150. The vacuum cleaner body 110 forms the outer shell of the vacuuming assembly 100, and its interior has a receiving space. The negative pressure source assembly 120 is located inside the vacuum cleaner body 110 and has an air inlet. The negative pressure source assembly 120 typically includes a motor and an impeller (or fan) driven by the motor, and its function is to generate negative pressure (suction) to drive the airflow. The main air duct 140 is the airflow channel in the vacuuming assembly 100 for dry vacuuming. One end of the main air duct 140 is connected to the negative pressure source assembly 120, and the other end forms a suction port 141. The suction port 141 is typically designed as a standardized interface that can be used to connect various dry vacuuming accessories. The dust cup 130 is disposed within the vacuum cleaner body 110 and is positioned along the path of the main air duct 140. It is used to separate and collect dust from the airflow. The suction port 141 protrudes from the dust cup 130 to form a suction nozzle 142. The secondary air duct 150 is an airflow channel in the vacuum cleaner assembly 100 used for wet cleaning. It is disposed independently of the main air duct 140. The secondary air duct 150 extends along the air inlet direction of the dust cup 130, with one end connected to the negative pressure source assembly 120 and the other end connected to the negative pressure air duct 207. When the vacuum cleaner assembly 100 is connected to the wet cleaning accessory 200, the secondary air duct 150 is connected to the negative pressure air duct 207, and the suction nozzle 142 is inserted into the mating groove 203.

[0042] See Figure 8 and Figure 9 When the vacuuming assembly 100 is connected to the wet cleaning attachment 200, the interface end of the secondary air duct 150 is connected to the interface end of the negative pressure air duct 207, so that the humid airflow generated by the wet cleaning attachment 200 during wet cleaning can enter the secondary air duct 150 through the negative pressure air duct 207, and then flow through the negative pressure source assembly 120 and be discharged.

[0043] By providing a detachable vacuuming assembly 100 and a wet cleaning attachment 200, the vacuuming assembly 100 can be used independently as a vacuum cleaner when the two are not connected. When connected to the wet cleaning attachment 200, the attachment enables wet cleaning. Furthermore, the vacuuming assembly 100 can also function as the operating handle for the entire cleaning device. By setting the secondary air duct 150 to extend along the air intake direction (vertical) of the dust cup 130, rather than laterally exiting the vacuum cleaner body 110, the secondary air duct 150 fully utilizes the vertical space around the dust cup 130. This design achieves separation of dry and wet airflows without increasing the radial dimension of the vacuum cleaner assembly 100, facilitating a slimmer overall design for the cleaning equipment. This also makes the vacuum cleaner assembly 100 more comfortable to hold and easier to operate, while also making it easier to store and store. By protruding the suction port 141 onto the dust cup 130 to form the nozzle 142, and inserting the nozzle 142 into the mating groove 203 when the vacuum cleaner assembly 100 is connected to the wet cleaning accessory 200, the nozzle 142 is fully utilized, avoiding the need for a separate connection structure that would increase the radial dimension of the vacuum cleaner body 110, while also sealing the nozzle 142.

[0044] See Figures 1 to 3 , Figure 5 , Figure 7 and Figure 9 In one embodiment, the wet cleaning accessory 200 includes a floor brush assembly 204 and a body assembly 202. The floor brush assembly 204 includes a roller brush for cleaning surfaces to be cleaned (such as the floor). One end (lower end) of the body assembly 202 is rotatably connected to the floor brush assembly 204, and the other end (upper end) is provided with a mating surface 205. The mating surface 205 is used to mate with the vacuuming assembly 100. A mating groove 203 is provided on the mating surface 205, and the interface end of the negative pressure air duct 207 is provided on the mating surface 205. The wet cleaning accessory 200 and the vacuuming assembly 100 are inserted and fixed together along the longitudinal direction of the vacuuming assembly 100.

[0045] By providing a mating surface 205 at the upper end of the body assembly 202, and having the mating surface 205 engage with the vacuuming assembly 100, the vacuuming assembly 100 and the wet cleaning accessory 200 are longitudinally fixed together along the vacuum cleaner body 110, facilitating assembly and disassembly. Since the interface ends of the mating groove 203 and the negative pressure air duct 207 are both located on the mating surface 205, the nozzle 142 and the mating groove 203 can be inserted and engaged, and the interface ends of the negative pressure air duct 207 and the secondary air duct 150 can be connected using the same docking reference surface, thereby simplifying the docking operation between the vacuuming assembly 100 and the wet cleaning accessory 200. In addition, by placing the mating groove 203 on the mating surface 205, the space at the upper end of the body assembly 202 can be fully utilized, avoiding the need to add connecting structures to the outside of the body assembly 202, which would increase the radial dimension of the body assembly 202.

[0046] In one embodiment, the interface end of the negative pressure duct 207 (see...) Figure 5 , Figure 7 , Figure 9 The protruding structure 201 in the middle protrudes from the mating surface 205. When the vacuuming assembly 100 is connected to the wet cleaning accessory 200, the interface end of the negative pressure air duct 207 is inserted into the interface end of the secondary air duct 150 (see...). Figure 9 ).

[0047] Specifically, the interface end of the negative pressure air duct 207 can be a protruding structure 201 extending longitudinally from the mating surface 205, the outer contour of which matches the inner cavity contour of the interface end of the secondary air duct 150. When the vacuuming assembly 100 is connected to the wet cleaning accessory 200, the interface end of the negative pressure air duct 207 protruding from the mating surface 205 is inserted into the interface end of the secondary air duct 150, forming a concave-convex insertion fit.

[0048] See Figure 3 , Figure 5 , Figure 7 , Figure 9 In one embodiment, a sealing structure 206 is provided on the outer periphery of the interface end of the negative pressure air duct 207. After the dust collection assembly 100 and the wet cleaning accessory 200 are connected in place, the interface end of the secondary air duct 150 presses against the sealing structure 206 to achieve a seal between the secondary air duct 150 and the negative pressure air duct 207.

[0049] By protruding the interface end of the negative pressure duct 207 onto the mating surface 205 to form a concave-convex interlocking fit, the stability of the connection is improved. It also facilitates the setting of a sealing structure 206 (such as a sealing ring) at the interface end of the negative pressure duct 207 protruding from the mating surface 205, thereby forming a stable and reliable seal. Furthermore, the protruding interface end of the negative pressure duct 207 can also serve as a guide to ensure accurate docking between the interface end of the negative pressure duct 207 and the interface end of the secondary duct 150.

[0050] See Figure 5 , Figure 7 , Figure 9 In one embodiment, the interface end of the secondary air duct 150 and the interface end of the negative pressure air duct 207 form a shallow insertion fit, and the suction nozzle 142 and the mating groove 203 form a deep insertion fit.

[0051] In this application, the insertion depth refers to the effective mating length along the insertion direction (longitudinal direction) when the vacuuming assembly 100 is connected to the wet cleaning accessory 200, the insertion of the insert (such as the interface end of the negative pressure air duct 207 or the nozzle 142) into the mating base (such as the interface end of the secondary air duct 150 or the mating groove 203).

[0052] In comparison, the interface end of the negative pressure duct 207, which protrudes from the mating surface 205, is inserted into the interface end of the secondary duct 150 to a relatively shallow depth. That is, the length of the interface end of the negative pressure duct 207 protruding from the mating surface 205 is relatively short. Its purpose is twofold: first, to facilitate the installation of the sealing structure 206 located here, so as to achieve sealing and airflow; and second, to trigger and drive the duct switching mechanism 160 (see below) used to switch between the main duct 140 and the secondary duct 150, rather than to bear the force at the connection. Correspondingly, the depth to which the nozzle 142 is inserted into the mating groove 203 is relatively deep (that is, the length of the nozzle 142 is relatively long), which is significantly greater than the depth to which the interface end of the negative pressure air duct 207 is inserted into the interface end of the secondary air duct 150. When the vacuuming assembly 100 is connected to the wet cleaning attachment 200, and the vacuuming assembly 100 is used as an operating handle to bear loads such as pushing, pulling, and torque, the deep insertion makes the nozzle 142 and the mating groove 203 have a large contact surface in the longitudinal direction, which can disperse and transfer the load to the mating groove 203, thereby enhancing the connection strength, bending resistance and torsion resistance of the overall structure, making the nozzle 142 less likely to come loose from the mating groove 203 and less likely to shake.

[0053] See Figure 9 In one embodiment, the secondary air duct 150 abuts against the negative pressure air duct 207, and the suction nozzle 142 is detachably and fixedly connected to the mating groove 203.

[0054] When the vacuuming assembly 100 is connected to the wet cleaning attachment 200, the interface end of the secondary air duct 150 abuts against the interface end of the negative pressure air duct 207. This abutment means that the two are sandwiched between their end faces (or sealing surfaces) and a sealing structure 206, such as a sealing ring, is provided. The sealing structure 206 deforms under the action of longitudinal connection clamping force to achieve sealing contact and remains tightly fitted under the action of external force, thereby achieving sealing and air passage connection.

[0055] The detachable fixed connection means that when the vacuuming assembly 100 is connected to the wet cleaning attachment 200, the nozzle 142 is inserted into the mating groove 203 (keeping them relatively fixed) to maintain a fixed connection between the vacuuming assembly 100 and the wet cleaning attachment 200. When the vacuuming assembly 100 and the wet cleaning attachment 200 are not connected, the nozzle 142 is separated from the mating groove 203. Thus, by designing the nozzle 142 and the mating groove 203 as a detachable fixed connection, a separate connection structure for connecting the vacuuming assembly 100 and the wet cleaning attachment 200 is avoided. This allows for connection without increasing the overall radial dimension of the structure, saving costs and facilitating the creation of a slim cleaning device. Furthermore, the detachable fixed connection ensures stability during connection, and the plug-in connection method facilitates quick assembly and disassembly, saving time.

[0056] See Figure 2 , Figure 10 , Figure 12 In one embodiment, the secondary air duct 150 and the main air duct 140 are arranged one in front of the other along the forward direction of the cleaning equipment, and the secondary air duct 150 is located in front of the main air duct 140.

[0057] It is understandable that, overall, the axes of the main air duct 140 and the secondary air duct 150 are set parallel or roughly parallel.

[0058] When the vacuum assembly 100 is connected to the wet cleaning attachment 200 and wet cleaning is performed, the air containing wastewater is drawn from the front end of the floor brush assembly 204 to the negative pressure air duct 207. This positions the secondary air duct 150 in the forward direction, allowing it to connect to the secondary air duct 150 via the shortest, straightest path with the fewest turns, thus minimizing the overall length of the wet cleaning air duct. Fewer turns also reduce airflow resistance and wastewater accumulation at turning points. When the vacuum assembly 100 is not connected to the wet cleaning attachment 200, it can be used independently as a vacuum cleaner. When the user holds the vacuum assembly 100, it is typically tilted relative to the surface to be cleaned (such as the floor), with the main air duct 140 located at the rear, making the suction port 141 also located at the rear, facilitating vacuuming and conforming to the usage habits of a handheld vacuum cleaner.

[0059] In addition, since the vacuuming assembly 100 also contains heavier components such as the negative pressure source assembly 120 and the dust cup 130, while the secondary air duct 150 is relatively light, placing the main air duct 140 at the rear is more conducive to the weight balance when the user holds the device, thus improving operational stability.

[0060] See Figure 5 , Figure 7 , Figure 9 , Figure 10 , Figure 12 In one embodiment, the negative pressure port 151 of the secondary air duct 150 and the dust suction port 141 are arranged in front of and behind each other along the forward direction of the cleaning device, and the negative pressure port 151 is located in front of the dust suction port 141.

[0061] By placing the negative pressure port 151 of the secondary air duct 150 at the front, the path of the humid airflow is shortened during wet cleaning. Since the negative pressure air duct 207 is located at the front-middle of the floor brush assembly 204, the placement of the negative pressure port 151 at the front, connecting with the interface end of the negative pressure air duct 207, also facilitates the formation of a short and straight path, reducing bends at connections and overall transitions, thereby reducing the flow resistance of the humid airflow and its accumulation at bends. The suction port 141 is positioned at the rear for air intake and suction, which is more in line with the user's habit of holding the vacuum assembly 100.

[0062] See Figure 5 , Figure 7 , Figure 9 In one embodiment, the interface end of the negative pressure air duct 207 and the mating groove 203 are arranged in front and behind along the forward direction of the wet cleaning accessory 200, and the interface end of the negative pressure air duct 207 is located in front of the mating groove 203.

[0063] In conjunction with the aforementioned embodiments, the layout of this embodiment ensures that the corresponding docking structures are in one-to-one correspondence, avoiding structural complexity and increased radial dimensions of the overall structure due to mismatched positions. Furthermore, the nozzle 142 is longer, and as long as the first nozzle 142 that comes into contact is aligned with the mating slot 203, the installation accuracy can be guaranteed. This allows users to directly plug in the vacuuming assembly 100 and the wet cleaning accessory 200, greatly simplifying the assembly operation. Moreover, there is no need for complicated inspection and adjustment of the docking structure, making it very user-friendly for new users.

[0064] See Figures 4 to 9 In one embodiment, the interface end of the secondary air duct 150 is set approximately flush with the air inlet end of the dust cup 130 near the dust suction port 141.

[0065] In other words, the interface end of the secondary air duct 150 and the air inlet end of the dust cup 130 are basically at the same height along the longitudinal direction. This makes the connection interface of the vacuuming assembly 100 flatter, which is easier to process and seal, and also facilitates the connection between the vacuuming assembly 100 and the wet cleaning attachment 200. It also makes full use of the longitudinal space of the side wall of the dust cup 130. If the interface end of the secondary air duct 150 is too short, it will waste the longitudinal space of the side wall of the dust cup 130 and will not be conducive to the connection between the vacuuming assembly 100 and the wet cleaning attachment 200. This will also result in an uneven connection interface of the body assembly 202, which is difficult to process. If the interface end of the secondary air duct 150 is too long, firstly, it will affect the normal use of the vacuuming function of the vacuum port 141 when the vacuuming assembly 100 is used alone (for example, the interface end of the secondary air duct 150 is even longer than the nozzle 142), and secondly, it will affect the insertion of the nozzle 142 into the mating groove 203, and will result in an excessively long longitudinal dimension of the overall structure. In addition, when the vacuuming assembly 100 is connected to the wet cleaning attachment 200 and the vacuuming assembly 100 is used as the operating handle, this flush end face arrangement is also conducive to distributing the load, thereby enhancing the strength of the overall structure.

[0066] See Figure 5 , Figure 7 , Figure 9 In one embodiment, the suction nozzle 142 is provided with a bent connection portion 143 at one end near the dust cup 130. The bent connection portion 143 is inclined and bent relative to the suction nozzle 142, and the bent connection portion 143 is fixed to the air inlet end of the dust cup 130.

[0067] It is understood that the bending connection 143 and the suction nozzle 142 can be two parts (fixedly connected), or they can be designed as an integrally formed structure, which has the bending connection 143 and the suction nozzle 142 (that is, the solution of this embodiment).

[0068] In this embodiment, the bent connection 143 and the suction nozzle 142 are integrally formed. The bent connection 143 is the upper end of the suction nozzle 142, which is fixed to the air inlet end of the dust cup 130. The bent connection 143 is inclined relative to the axis (extending longitudinally) of the lower end of the suction nozzle 142. The inclination angle of the bent connection 143 relative to the axis of the lower end is usually an obtuse angle to avoid stress concentration at the connection between the bent connection 143 and the lower end, which is not conducive to load distribution.

[0069] When the vacuuming assembly 100 is connected to the wet cleaning attachment 200, compared to a straight design, the bent connection 143 can withstand a greater radial load (such as radial force and torque), so that more load is distributed at the bend position to avoid stress concentration and excessive load being concentrated at the weak connection point with the dust cup 130 / body assembly 202. In addition, the compressive strength of the one-piece bent structure is significantly greater than that of the connection point with the dust cup 130 / body assembly 202 (such as the snap-fit / bolt connection).

[0070] See Figure 5 , Figure 7 In one embodiment, during the connection of the vacuuming assembly 100 and the wet cleaning attachment 200, the nozzle 142 contacts the wet cleaning attachment 200 before the interface end of the secondary air duct 150.

[0071] It is understandable that the following two schemes can both achieve the contact between the suction nozzle 142 and the wet cleaning accessory 200 before the interface end of the secondary air duct 150: one is that the suction nozzle 142 protrudes longitudinally from the interface end of the secondary air duct 150, and the interface end of the negative pressure air duct 207 is basically flush with the end face of the mating groove 203; the other is that the air inlet end face of the suction nozzle 142 is basically flush with the end face of the interface end of the secondary air duct 150, and the end face of the mating groove 203 protrudes longitudinally from the end face of the interface end of the negative pressure air duct 207. To facilitate suction of the suction port 141 when the vacuuming assembly 100 is used alone as a vacuum cleaner, this embodiment adopts the former scheme.

[0072] For details, please refer to Figure 4 , Figure 5 When the user holds the vacuum cleaner assembly 100 vertically downwards and aligns it with the mating surface 205 of the main body assembly 202, because the nozzle 142 protrudes vertically from the end face of the interface of the secondary air duct 150, the air inlet face of the nozzle 142 first contacts the inlet of the mating groove 203. At this time, there is still a vertical distance between the interface end of the secondary air duct 150 and the interface end of the negative pressure air duct 207, and no contact occurs. (See reference...) Figure 6 , Figure 7 As the user continues to move the vacuum assembly 100 downwards, the nozzle 142, guided by the mating groove 203, continues to extend into the mating groove 203 until the vacuum assembly 100 descends to a certain position. Only then does the interface end of the secondary air duct 150 contact the top of the interface end of the protruding negative pressure air duct 207. (See reference...) Figure 8 , Figure 9 The user continues to move the vacuum component down 100 until it can no longer be moved, indicating that it is installed correctly.

[0073] Since the nozzle 142 needs to bear the load of the connection interface after it is mated with the mating groove 203, the nozzle 142 is longer in the longitudinal direction to increase the contact surface after mating, so that the load distribution is more uniform and thus provides the connection strength of the overall structure. Because the nozzle 142 is longer in the longitudinal direction, it is more conducive to guiding and correcting the tilt that occurs when the vacuum cleaner body 110 moves downward during the connection process, thus improving the connection accuracy.

[0074] See Figure 5 , Figure 7 , Figure 9 , Figure 10 , Figure 12 In one embodiment, the suction port 141 and the negative pressure port 151 face the same direction. In other words, the suction port 141 for connecting to the dry vacuum attachment and the negative pressure port 151 for connecting to the negative pressure air duct 207 of the wet cleaning attachment 200 are configured to face the same side of the vacuum cleaner body 110 (e.g., both facing the bottom of the vacuum cleaner body 110). This allows the external interfaces of the two air ducts to be arranged in a centralized manner, eliminating the need to adjust the overall position of the machine when switching between dry and wet cleaning modes, thus facilitating operation.

[0075] See Figure 10 , Figure 12 In another embodiment, the airflow direction at the inlet of the main air duct 140 and the secondary air duct 150 is the same. For example, both can be designed to directly intake air along the longitudinal direction of the vacuum cleaner body 110 to reduce the radial dimension of the vacuum cleaner body 110, making the vacuum cleaner body 110 more slender overall, making it easier for the user to hold the vacuum cleaner body 110 for cleaning, thus eliminating the need to provide an additional operating handle for the user to hold on the top of the vacuum cleaner body 110.

[0076] See Figure 10 , Figure 12 In another embodiment, the secondary air duct 150 is closely attached to the dust cup 130 and extends along the air intake direction of the dust cup 130. For example, the secondary air duct 150 and the dust cup 130 share the side wall of the dust cup 130 to make the most of the space around the dust cup 130 while achieving dry and wet separation, thereby reducing the radial dimension of the vacuum cleaner body 110 and making the vacuum cleaner body 110 more slender overall, so that the user can hold the vacuum cleaner body 110 for cleaning, thus eliminating the need to provide an additional operating handle for the user to hold on the top of the vacuum cleaner body 110.

[0077] It is understood that the solutions in the above three embodiments are not mutually exclusive and can be combined. For example, the suction port 141 and the negative pressure port 151 both face the bottom of the vacuum cleaner body 110, both air ducts adopt longitudinal air intake, and the secondary air duct 150 is closely attached to the side wall of the dust cup 130 and extends longitudinally.

[0078] See Figure 10 , Figure 12 In one embodiment, the secondary air duct 150 and the dust cup 130 share a common sidewall, and the ratio of the cross-sectional area of ​​the secondary air duct 150 to the cross-sectional area of ​​the dust cup 130 is between 1 / 20 and 1 / 4.

[0079] It should be noted that the shared sidewall means that at least part of the outer sidewall of the dust cup 130 is used as the inner sidewall of the secondary air duct 150. The cross-sectional ratio of the secondary air duct 150 and the dust cup 130 refers to the ratio of the flow cross-sectional area of ​​the secondary air duct 150 to the cross-sectional area of ​​the dust cup 130 on the same cross-section perpendicular to the airflow direction, and its range is between 1 / 20 and 1 / 4.

[0080] Understandably, the lower limit of the cross-sectional ratio between the secondary air duct 150 and the dust cup 130 is set at 1 / 20 to ensure that the secondary air duct 150 has a basic flow channel size to allow for smooth flow of humid air. If the cross-sectional area of ​​the secondary air duct 150 is too small relative to the cross-sectional area of ​​the dust cup 130, it will lead to excessively high flow velocity of the humid air and significantly increased flow resistance, thereby reducing the suction power of the negative pressure source component 120, reducing the floor cleaning and suction effect, and even generating sharp airflow noise. The upper limit of the cross-sectional ratio between the secondary air duct 150 and the dust cup 130 is set at 1 / 4 to control the lateral space occupied by the secondary air duct 150 on the vacuum cleaner body 110 to ensure the capacity of the dust cup 130. If the secondary air duct 150 is designed to be too large, although the flow of humid air will be smoother, it will lead to a significant reduction in the capacity of the dust cup 130, requiring users to clean the dust cup 130 frequently, affecting the user experience.

[0081] Thus, by setting a common sidewall, the amount of material used can be reduced and the overall weight can be lightened, thereby reducing costs. By designing the cross-sectional ratio of the secondary air duct 150 and the dust cup 130 to be between 1 / 20 and 1 / 4, the capacity of the dust cup 130 can be guaranteed while ensuring good flow of humid air.

[0082] In the field of cleaning equipment technology, in order to enable the vacuuming assembly 100 with dry vacuuming function to be adapted to wet cleaning accessories (such as floor scrubbers) to achieve multi-functionality, the vacuuming assembly 100 is usually detachably installed on the wet cleaning accessory, and the vacuuming assembly 100's own negative pressure source assembly 120 provides suction (negative pressure) for the wet cleaning process. Specifically, in related technologies, elastic buckles are usually provided on the bottom and sides of the vacuuming assembly 100, and snap-fit ​​positions are provided on the wet cleaning accessory. The elastic deformation of the elastic buckles generates a locking force to limit the displacement of the vacuuming assembly 100 in the direction perpendicular to the mounting surface, thereby fixing the vacuuming assembly 100 to the wet cleaning accessory 200.

[0083] However, when the vacuuming assembly 100 is used as a handle connected to the wet cleaning attachment, the fixing force of the elastic buckle is obviously insufficient. When the user holds the vacuum cleaner body 110 of the vacuuming assembly 100 and pushes or tilts and lifts the cleaning device, the connection surface is prone to shaking due to the limited torque and bending resistance of the elastic buckle. In fact, the elastic buckle may even loosen after long-term use, affecting the stability and reliability of use.

[0084] Researchers discovered through in-depth analysis that although elastic buckles are easy to assemble and disassemble, they cannot return to their original shape due to fatigue deformation after repeated stress and disassembly. Furthermore, the mating surfaces of the elastic buckles will wear down. In addition, repeated impacts from external forces can cause the elastic buckles to loosen easily.

[0085] For this purpose, please refer to Figures 4 to 9 The cleaning device of this application also includes a locking mechanism to solve the aforementioned problems.

[0086] See Figures 4 to 9 In one embodiment, the cleaning device further includes a locking engagement structure for restricting the relative movement of the vacuuming assembly 100 and the wet cleaning attachment 200 in the separation direction after the vacuuming assembly 100 is connected to the wet cleaning attachment 200; wherein the separation direction is the direction in which the vacuuming assembly 100 and the wet cleaning attachment 200 move away from each other.

[0087] In this embodiment, the separation direction refers to the direction in which the vacuuming assembly 100 and the wet cleaning accessory 200 move away from each other when the vacuuming assembly 100 and the wet cleaning accessory 200 are connected, specifically the direction in which the vacuuming assembly 100 moves vertically upward.

[0088] After the vacuuming assembly 100 and the wet cleaning attachment 200 are connected to the mating groove 203 via the nozzle 142, the relative movement of the vacuuming assembly 100 and the wet cleaning attachment 200 in the separation direction (longitudinal upward) and the radial movement of the vacuuming assembly 100 are restricted by the locking engagement structure, thereby improving the connection stability, preventing the vacuuming assembly 100 from loosening, and also reducing shaking to a certain extent; in addition, in this embodiment, the locking engagement structure is located below the mating surface 205, rather than on the mating surface 205 (setting the locking engagement structure on the mating surface 205 would increase the radial dimension of the vacuum cleaner body 110), so as to reduce the radial dimension of the body assembly 202, thereby reducing the radial dimension of the overall structure, so that the cleaning equipment meets the design concept of slim design.

[0089] See Figures 4 to 9Furthermore, in one embodiment, the locking engagement structure includes a locking member 209 and a locking groove 210. The locking member 209 is disposed on the wet cleaning attachment 200, and the locking groove 210 is disposed on the vacuuming assembly 100. After the locking member 209 and the locking groove 210 are engaged, they are both located below the mating surface 205. The locking member 209 is capable of elastic deformation in response to external force. After the vacuuming assembly 100 is connected to the wet cleaning attachment 200, the locking member 209 can be engaged into the locking groove 210.

[0090] Specifically, the locking member 209 is installed at one end of the body assembly 202 near the mating surface 205, and is typically an elastic member to undergo elastic deformation in response to external forces. The locking groove 210 is located on the side of the suction nozzle 142 away from the negative pressure air duct 207, and is positioned corresponding to the locking member 209 when the suction assembly 100 is installed. The locking groove 210 can be a recess or a through hole 1721.

[0091] It is understood that the locking element 209 may be made of a resilient material (such as engineering plastics) or an elastic element (such as a spring) may be integrated into the locking element 209 to make the locking element 209 resilient and capable of producing recoverable elastic deformation.

[0092] During the connection between the vacuuming assembly 100 and the wet cleaning accessory 200, when the vacuuming assembly 100 descends longitudinally to a certain position, the end of the locking member 209 contacts the outer wall of the nozzle 142. This contact causes the nozzle 142 to apply a contact force to the locking member 209, causing the locking member 209 to undergo elastic deformation, so that the vacuum cleaner body 110 can continue to be installed longitudinally downwards. When both are installed in place, the locking member 209 extends into the locking groove 210 along the outer wall of the nozzle 142. At this time, since the nozzle 142 is no longer in contact with the locking member 209, the contact force disappears, causing the locking member 209 to rebound under the action of elastic restoring force, thereby causing the end of the locking member 209 to contact the bottom of the locking groove 210, so as to restrict the nozzle 142 from moving longitudinally upwards.

[0093] Thus, by setting the locking element 209 and the locking groove 210, and by enabling the locking element 209 to elastically deform in response to external force, the vacuuming assembly 100 is automatically locked during the connection process between the vacuuming assembly 100 and the wet cleaning attachment 200. The entire locking process requires no additional operation from the user, greatly simplifying the operation steps. Furthermore, this mechanical locking method is more stable and reliable. By setting the locking element 209 on the body assembly 202 and the locking groove 210 on the nozzle 142, the radial dimension of the overall structure is avoided by not requiring a separate installation / connection structure for the locking mechanism, while also saving space and making the overall structure more compact.

[0094] See Figures 4 to 9 Furthermore, in one embodiment, the locking member 209 includes a pressing part 211 and a locking part 212 disposed on the pressing part 211, the pressing part 211 being disposed on the wet cleaning attachment 200; after the vacuuming assembly 100 and the wet cleaning attachment 200 are connected in place, the locking part 212 engages with the locking groove 210.

[0095] When the vacuuming assembly 100 is connected to the wet cleaning attachment 200, the locking part 212 corresponds to the locking groove 210, and the locking part 212 rebounds under the action of elastic restoring force because it is no longer in contact with the nozzle 142, so as to be locked into the locking groove 210, thereby locking the vacuuming assembly 100.

[0096] The pressing part 211 is exposed on the outer surface of the body assembly 202 so that the user can press to unlock it. When it is necessary to disassemble the vacuum assembly 100, the user presses the pressing part 211. Since the locking part 212 is linked with the pressing part 211, when the pressing part 211 is subjected to external force (the pressing force applied by the user), the locking part 212 moves away from the locking groove 210 to disengage from the locking groove 210, thereby unlocking the vacuum assembly 100. At this time, the user can hold the vacuum assembly 100 and move it vertically upward to remove the vacuum assembly 100.

[0097] It is understandable that the pressing part 211 and the locking part 212 can be integrally injection molded plastic parts, or they can be two separate structures fixedly connected to form the locking part 209. The outer surface of the pressing part 211 can be designed with anti-slip textures to facilitate user pressing operation. The pressing part 211 can be designed such that when the user presses it, the pressing part 211 rotates around a pivot by an angle, and the rotated pressing part 211 causes the reset element (such as a spring) to deform, thereby causing the locking part 212 to disengage from the locking groove 210. When the user releases it, the pressing part 211 resets under the restoring force of the reset element.

[0098] By setting up a locking part 212 and a pressing part 211 that are linked together, the vacuuming assembly 100 is locked when connecting the vacuuming assembly 100 and the wet cleaning accessory 200, which simplifies the connection operation. In addition, the user only needs to press the pressing part 211 to make the locking part 212 disengage from the locking groove 210 to unlock and disassemble the vacuuming assembly 100, making the operation simple and convenient.

[0099] See Figures 10 to 13In one embodiment, the vacuuming assembly 100 further includes an air duct switching mechanism 160, which is configured to have at least a first state in a natural state and a second state in which the vacuuming assembly 100 is connected to the wet cleaning accessory 200; one end of the main air duct 140 away from the vacuum port 141 is connected to the negative pressure source assembly 120 through the air duct switching mechanism 160; one end of the secondary air duct 150 away from the negative pressure air duct 207 is connected to the negative pressure source assembly 120 through the air duct switching mechanism 160; wherein, in the first state, the air duct switching mechanism 160 connects the main air duct 140 to the negative pressure source assembly 120 and disconnects the secondary air duct 150 from the negative pressure source assembly 120; in the second state, the air duct switching mechanism 160 connects the secondary air duct 150 to the negative pressure source assembly 120 and disconnects the main air duct 140 from the negative pressure source assembly 120.

[0100] Specifically, the air duct switching mechanism 160 is disposed within the vacuum cleaner body 110 and located downstream of the negative pressure source assembly 120. The air duct switching mechanism 160 is configured to have at least a first state and a second state. When the vacuum cleaner assembly 100 is used alone as a vacuum cleaner without external connection, the air duct switching mechanism 160 is in its natural first state. When the vacuum cleaner assembly 100 is connected to the wet cleaning attachment 200, the air duct switching mechanism 160 is in its second state, where the vacuum cleaner assembly 100 is connected to the wet cleaning attachment 200. The natural first state refers to the state of the air duct switching mechanism when the vacuum cleaner assembly 100 is not connected to the wet cleaning attachment 200 and is used alone as a vacuum cleaner. The second state refers to the state of the air duct switching mechanism when the vacuum cleaner assembly 100 is connected to the wet cleaning attachment 200.

[0101] One end of the main air duct 140 is connected to the air inlet of the negative pressure source component 120 through the air duct switching mechanism 160, and the other end of the main air duct 140 forms a suction port 141 for sucking up dry waste; the dust cup 130 is located between the suction port 141 and the air duct switching mechanism 160; one end of the secondary air duct 150 is connected to the air inlet of the negative pressure source component 120 through the air duct switching mechanism 160, and the other end of the secondary air duct 150 is used to connect with the negative pressure air duct 207 of the wet cleaning accessory 200, and a negative pressure port 151 is formed at the connection point.

[0102] The function of the air duct switching mechanism 160 is to selectively connect the main air duct 140 or the secondary air duct 150 depending on whether the vacuuming assembly 100 is connected to the wet cleaning attachment 200. Specifically, in the first state, the air duct switching mechanism 160 connects the airflow path between the main air duct 140 and the negative pressure source assembly 120, while physically blocking the airflow path between the secondary air duct 150 and the negative pressure source assembly 120. At this time, if the negative pressure source assembly 120 is activated, outside air will only be drawn in from the suction port 141, flow sequentially through the main air duct 140 and the dust cup 130, and finally enter the negative pressure source assembly 120 through the air duct switching mechanism 160 and be discharged. In the second state, the air duct switching mechanism 160 connects the airflow path between the secondary air duct 150 and the negative pressure source assembly 120, while physically blocking the airflow path between the main air duct 140 and the negative pressure source assembly 120. At this time, when the vacuuming assembly 100 is connected to the wet cleaning attachment 200 and the negative pressure source assembly 120 is activated, the airflow can only enter the secondary air duct 150 from the negative pressure duct 207 of the wet cleaning attachment 200 via the negative pressure port 151, and then directly enter the negative pressure source assembly 120 and be discharged through the air duct switching mechanism 160. During this process, the airflow containing moisture is completely transported through the independent channel of the secondary air duct 150, achieving physical isolation from the dust cup 130.

[0103] Through the aforementioned dual-channel selective switching mechanism, the dust collection component 100 of this application physically eliminates the possibility of humid airflow coming into contact with the dust cup 130. During wet cleaning, the humid airflow is directly guided to the negative pressure source component 120 via the secondary air duct 150, thereby fundamentally preventing moisture from causing debris to clump together, become damp and clogged within the dust cup 130, and leading to a series of problems such as suction power reduction and bacterial growth. This ensures the performance and long-term reliability of the dust collection component 100 in both wet and dry modes.

[0104] See Figures 10 to 13 In one embodiment, the air duct switching mechanism 160 includes a driven structure 161, a main air duct cooperating structure 162, and a secondary air duct cooperating structure 163; the main air duct cooperating structure 162 is used to open or close the main air duct 140; the secondary air duct cooperating structure 163 is used to open or close the secondary air duct 150; the driven structure 161 is configured to drive the main air duct cooperating structure 162 and the secondary air duct cooperating structure 163 in linkage under the docking force of the wet cleaning accessory 200, thereby switching the air duct switching mechanism 160 to the second state.

[0105] Specifically, the main air duct mating structure 162 is movably disposed at the docking position between the main air duct 140 and the negative pressure source component 120, and is used to open or close the airflow outlet at the upstream end of the main air duct 140. The secondary air duct mating structure 163 is movably disposed at the docking position between the secondary air duct 150 and the negative pressure source component 120, and is used to open or close the airflow outlet at the upstream end of the secondary air duct 150.

[0106] It should be noted that the driven structure 161 does not independently drive any one of the mating structures. Instead, it is designed to simultaneously drive the main air duct mating structure 162 and the secondary air duct mating structure 163 to interact under the action of the wet cleaning accessory 200. This interaction design ensures the synchronicity and interlocking of the actions of the main air duct mating structure 162 and the secondary air duct mating structure 163. When the driven structure 161 is triggered, it outputs a driving action, causing one of the mating structures, the main air duct mating structure 162 and the secondary air duct mating structure 163, to close its corresponding air duct, while the other mating structure simultaneously opens its corresponding air duct, thereby switching the air duct switching mechanism 160 from the first state to the second state.

[0107] Thus, by setting the driven structure 161 and having it drive the main air duct cooperating structure 162 and the secondary air duct cooperating structure 163 to work together, not only is the automatic switching between the first and second states (triggered by the docking action) achieved, but the strict mutual exclusion of the on / off states of the main air duct 140 and the secondary air duct 150 is also ensured. That is, only one air duct is connected to the negative pressure source component 120 at any time, thereby avoiding the mixing or leakage of dry and wet airflows and improving the reliability of physical isolation.

[0108] See Figures 10 to 13 In one embodiment, the air duct switching mechanism 160 further includes an elastic reset member 164 for providing a reset force for the air duct switching mechanism 160 to maintain or return to the first state.

[0109] Specifically, when the vacuuming assembly 100 is not connected to the wet cleaning accessory 200 and the driven structure 161 is not subjected to external docking force, the reset force of the elastic reset member 164 drives and keeps the main air duct mating structure 162 and the secondary air duct mating structure 163 in the position corresponding to the first state. At this time, the main air duct 140 is open and the secondary air duct 150 is closed, and the vacuuming assembly 100 is in a ready-to-use dry vacuuming state. When the vacuuming assembly 100 docks with the wet cleaning attachment 200, the docking force applied by the wet cleaning attachment 200 to the driven structure 161 can overcome the reset force provided by the elastic reset member 164, thereby driving the main air duct mating structure 162 and the secondary air duct mating structure 163 to move together, causing the air duct switching mechanism 160 to switch to the second state. Once the docking force is removed (e.g., when the user removes the vacuuming assembly 100 from the wet cleaning attachment 200), the reset force of the elastic reset member 164 drives the various moving parts of the air duct switching mechanism 160 to move in the opposite direction, thereby restoring the air duct switching mechanism 160 to the first state.

[0110] Thus, by setting the elastic reset component 164, the air duct switching mechanism 160 is automatically reset to the first state. After the user completes wet cleaning, the vacuuming component 100 can automatically return to an independently usable vacuum cleaner without any manual operation, improving the convenience and intelligence of operation.

[0111] In one specific embodiment, the elastic reset member 164 may be a compression spring, with its two ends respectively connected between the main air duct mating structure 162 and the second end 172 of the mounting base 170 (hereinafter referred to as the mounting base). Of course, the elastic reset member 164 may also be a tension spring, torsion spring, or elastic rubber body, as long as it can provide an elastic force to make the mechanism tend to the first state.

[0112] See Figures 10 to 13 In one embodiment, the air duct switching mechanism 160 further includes a connector 165 connected between the main air duct cooperation structure 162 and the secondary air duct cooperation structure 163 to maintain the synchronous movement of the main air duct cooperation structure 162 and the secondary air duct cooperation structure 163.

[0113] The connector 165 is rigidly or fixedly connected between the main air duct mating structure 162 and the secondary air duct mating structure 163, so that the main air duct mating structure 162 and the secondary air duct mating structure 163 are combined into a unified moving component, thereby maintaining the synchronous movement of the main air duct mating structure 162 and the secondary air duct mating structure 163.

[0114] When the driven structure 161 begins to move under the docking force, its output driving force can directly or indirectly act on the main air duct mating structure 162 and the secondary air duct mating structure 163 connected by the connector 165. Due to the connecting effect of the connector 165, there are no independent, relatively movable degrees of freedom between the main air duct mating structure 162 and the secondary air duct mating structure 163. Thus, the displacement generated by the driven structure 161 driving the moving component will be transmitted simultaneously and without deviation to the main air duct mating structure 162 and the secondary air duct mating structure 163, ensuring that while one mating structure performs a closing action, the other mating structure synchronously performs an opening action.

[0115] Thus, by setting the connector 165, the main air duct mating structure 162 and the secondary air duct mating structure 163 can move in strict synchronization, and the synchronous switching of the two air ducts can be achieved by one connector 165, which improves the reliability and durability of the mechanism and reduces the requirements for assembly and manufacturing precision.

[0116] In one embodiment, the connector 165 may be a rigid link, with its two ends fixedly connected to the main air duct mating structure 162 and the secondary air duct mating structure 163, respectively. In another embodiment, the main air duct mating structure 162, the connector 165, and the secondary air duct mating structure 163 may be integrally formed single components, such as an injection-molded sliding structure, on which different parts are formed for performing the opening or closing functions of the main air duct 140 and the secondary air duct 150, respectively.

[0117] See Figures 10 to 13 In one embodiment, the driven structure 161 includes a driven member 1611 that can be docked with the wet cleaning attachment 200 and a reversing member 1612 that is linked with the driven member 1611; wherein the reversing member 1612 is configured to convert the motion of the driven member 1611 into the motion of the secondary air duct mating structure 163 in another direction.

[0118] Specifically, the driven member 1611 is the component in the driven structure 161 that directly contacts the external docking force. It is configured to be pushed or pressed by a corresponding triggering component (e.g., a protruding structure 201) on the wet cleaning attachment 200 during the docking process between the vacuuming assembly 100 and the wet cleaning attachment 200, thereby generating linear motion along the airflow direction of the main air duct 140. The reversing member 1612 receives the motion input from the driven member 1611 and reverses the direction of the motion to output a force that drives the secondary air duct mating structure 163 to move in another direction (e.g., a lateral movement parallel to the radial direction of the vacuuming assembly 100).

[0119] It is understood that the linkage between the reversing component 1612 and the driven component 1611 can be varied. For example, they can be integrally formed parts with a specific contour, or they can be connected by a pin, snap-fit, or screw. The specific method by which the reversing component 1612 achieves the change of motion direction can also be diverse, such as using inclined plane engagement, lever principle, linkage mechanism, or cam mechanism, as long as the required reversal can be achieved.

[0120] See Figures 10 to 13 In one embodiment, the commutator 1612 has a first inclined surface 1612a, and the secondary air duct mating structure 163 has a second inclined surface 1631 that mates with the first inclined surface 1612a. The commutator 1612 moves under the drive of the driven member 1611 to drive the secondary air duct mating structure 163 to move in another direction.

[0121] Specifically, when the vacuuming assembly 100 docks with the wet cleaning attachment 200, the driven member 1611 is driven to move by an external docking force. Since the reversing member 1612 is linked to the driven member 1611, the reversing member 1612 also moves in the same direction. During this movement, the first inclined surface 1612a on the reversing member 1612 slides relative to the second inclined surface 1631 on the secondary air duct mating structure 163. Due to the geometric characteristics of the inclined surface structure, when the first inclined surface 1612a applies a force to the second inclined surface 1631 along its normal direction, this force can be decomposed into a lateral component and a longitudinal component. The lateral component pushes the secondary air duct mating structure 163 to displace in the other direction.

[0122] Thus, by setting a pair of inclined planes to achieve the conversion of motion direction, the structure is simple and compact, requiring only the machining of two corresponding and matching inclined planes, without the need for other complex reversing mechanisms, saving space and cost.

[0123] See Figures 10 to 13 In one embodiment, the air duct switching mechanism 160 further includes a guide 166 disposed on the vacuum cleaner body 110 for guiding the movement of the driven member 1611.

[0124] When the wet cleaning attachment 200 is applied to the driven member 1611, the guide member 166 ensures that the driven member 1611 moves strictly in the designed direction, so that the linkage between it and the reversing member 1612 always maintains the correct relative position and contact state, thereby avoiding changes in the force transmission path, contact stress concentration or local jamming caused by the deviation of the driven member 1611, and ensuring smooth and lossless reversing action.

[0125] Thus, by setting the guide 166, the driven member 1611 can move stably and smoothly along the preset path when receiving external docking force, thereby ensuring the reliability of the entire transmission process and the accuracy of force transmission, and avoiding wear caused by the driven member 1611 tilting during movement.

[0126] In one embodiment, the guide member 166 can be a bushing fixed inside the vacuum cleaner body 110, and the driven member 1611 is a push rod that can slide within the inner hole of the bushing. In other embodiments, the guide member 166 can also be a guide rail, guide groove, or other similar structure.

[0127] See Figures 10 to 13 In one embodiment, the vacuuming assembly 100 further includes a mounting base 170, and the negative pressure source assembly 120 is disposed at the first end 171 of the mounting base 170; the air duct switching mechanism 160 further includes at least two abutting surfaces 167, the at least two abutting surfaces 167 are disposed at the second end 172 of the mounting base 170, and the second end 172 has a through hole 1721 communicating with the negative pressure source assembly 120 on the abutting surfaces 167; the main air duct mating structure 162 has a first abutting surface 1621, and when the main air duct 140 is closed, the first abutting surface 1621 engages with the corresponding abutting surface 1621. The first contact surface 1621 abuts against the corresponding contact surface 167 to close the corresponding through hole 1721; when the main air duct 140 is open, the first contact surface 1621 separates from the corresponding contact surface 167 to open the corresponding through hole 1721; the secondary air duct mating structure 163 is provided with a second contact surface 1632; when the secondary air duct 150 is closed, the second contact surface 1632 engages with the corresponding contact surface 167 to close the corresponding through hole 1721; when the secondary air duct 150 is open, the second contact surface 1632 separates from the corresponding contact surface 167 to open the corresponding through hole 1721.

[0128] Thus, the switching between the main air duct 140 and the secondary air duct 150 is transformed into the opening and closing of the corresponding two through holes 1721. When the air duct switching mechanism 160 is in the second state, the main air duct mating structure 162 moves to a point where the first abutting surface 1621 and the abutting surface 167 corresponding to the main air duct 140 are tightly abutted together. This abutting together forms a physical blockage between the first abutting surface 1621 and the abutting surface 167, thereby closing the corresponding through hole 1721, making the main air duct 140 closed and preventing airflow. At the same time, the secondary air duct mating structure 163 moves to a point where the second abutting surface 1632 separates from the abutting surface 167 corresponding to the secondary air duct 150, thereby opening the through hole 1721 corresponding to the second abutting surface 1632, making the secondary air duct 150 open. Conversely, when the air duct switching mechanism 160 switches to the first state, the main air duct mating structure 162 moves in the opposite direction, causing the first contact surface 1621 to separate from the corresponding contact mating surface 167. The through hole 1721 is then opened, allowing the main air duct 140 to open and the airflow to pass smoothly. At the same time, the secondary air duct mating structure 163 moves in the opposite direction, causing the second contact surface 1632 to tightly contact the contact mating surface 167 corresponding to the secondary air duct 150, thereby closing the through hole 1721 corresponding to the second contact surface 1632 and closing the secondary air duct 150.

[0129] It is understood that the first contact surface 1621 and the second contact surface 1632 can be the main body surface of the main air duct mating structure 162 and the secondary air duct mating structure 163, respectively, or they can be the surface of a sealing component additionally provided on the main body surface. The number of the contact mating surfaces 167 is at least two, corresponding to the main air duct 140 and the secondary air duct 150, respectively.

[0130] Thus, by engaging the contact surface with the contact mating surface 167, the corresponding through hole 1721 can be opened and closed, thereby enabling the switching between the main air duct 140 and the secondary air duct 150. Furthermore, this also makes the air duct switching mechanism 160 simple in structure and reliable in operation.

[0131] See Figures 10 to 13 In one embodiment, a first filtration system (not shown) is provided in the second end 172. The first filtration system is compatible with water vapor filtration and is used to filter the airflow flowing through the through hole 1721. A second filtration system (not shown) is provided in the dust cup 130 and is used for dust filtration.

[0132] Specifically, the first filtration system is compatible with water vapor filtration. Its filter media or structure maintains its filtration performance and structural integrity even when in contact with humid airflow containing moisture, and will not fail, clump, or clog due to moisture. It can be made of materials such as hydrophobic sponge, moisture-proof sintered materials, or stainless steel filter screens. Furthermore, the first filtration system is located on the common airflow path between all through-holes 1721 and the negative pressure source assembly 120. Thus, regardless of whether the airflow comes from the main duct 140 or the secondary duct 150, it will inevitably pass through the first filtration system for filtration before entering the negative pressure source assembly 120. The second filtration system is arranged on the path of the main duct 140 through the dust cup 130. It is specifically designed to separate and filter inhaled dry waste and dust in dry suction mode. It typically consists of media that filter dry dust efficiently, such as HEPA filters or fine sponges.

[0133] Thus, by setting a first filtration system compatible with water vapor in the second end 172 of the mounting base 170 and a second filtration system dedicated to dust filtration in the dust cup 130, separate filtration of dry and wet airflow is achieved, which can protect the negative pressure source component 120 and facilitate the maintenance of the filtration system and the dust cup 130.

[0134] See Figures 10 to 13 In one embodiment, the air duct switching mechanism 160 further includes a first sealing element 1633 and a second sealing element 1622. The first sealing element 1633 is disposed on the secondary air duct mating structure 163 and is used to seal the corresponding sealing surface on the wall of the secondary air duct 150 when the secondary air duct 150 is closed. The second sealing element 1622 is disposed on the main air duct mating structure 162 and is used to seal the corresponding sealing surface on the wall of the main air duct 140 when the main air duct 140 is closed.

[0135] When the air duct switching mechanism 160 is in the first state, the first sealing member 1633 is tightly fitted against the second abutment surface 1632 and the corresponding abutment mating surface 167 to close the corresponding through hole 1721 and block airflow through the secondary air duct 150. When the air duct switching mechanism 160 is in the second state, the second sealing member 1622 is tightly fitted against the first abutment surface 1621 and the corresponding abutment mating surface 167 to close the corresponding through hole 1721 and block airflow through the main air duct 140.

[0136] Thus, by setting the first seal 1633 and the second seal 1622, the sealing effect is improved and air leakage is avoided.

[0137] In one specific embodiment, the first sealing element 1633 and the second sealing element 1622 can be sealing gaskets, which can be fixed on the second abutment surface 1632 and the first abutment surface 1621 respectively. Since the sealing gasket can undergo elastic deformation under external force, the sealing effect is better and air leakage is avoided.

[0138] See Figures 1 to 3 In one embodiment, both the vacuuming assembly 100 and the body assembly 202 of the wet cleaning accessory 200 are generally columnar structures. After they are docked and fixed, they form a continuous body shape along the longitudinal direction of the vacuum cleaner body 110, and the outer shells of the two are smoothly transitioned at the connection point.

[0139] Understandably, "column" generally refers to a geometric shape with a basically consistent cross-sectional profile that extends longitudinally, such as a cylinder, square column, or other regular columnar body.

[0140] When the vacuuming assembly 100 and the wet cleaning accessory 200 are longitudinally connected and fixed, their outer shells can smoothly transition at the connection point. That is, after the connection, the cleaning device forms a continuous body shape without protruding structures or gaps along the longitudinal direction of the vacuum cleaner body 110 (i.e., the length direction of the entire device), presenting a complete and unified whole in both visual and structural aspects.

[0141] Thus, the continuous and smooth cylindrical shape makes the cleaning equipment more aesthetically pleasing and also helps to achieve a reliable seal at the connection point, preventing leakage at the connection point between the secondary air duct 150 and the negative pressure air duct 207.

[0142] See Figures 4 to 9 In one embodiment, the wet cleaning accessory 200 is provided with a trigger for changing the state of the air duct switching mechanism 160. When the vacuum cleaner body 110 is docked with the wet cleaning accessory 200, the trigger causes the air duct switching mechanism 160 to switch to the second state; when the vacuum cleaner body 110 is detached from the wet cleaning accessory 200, the air duct switching mechanism 160 returns to the first state.

[0143] During the process of the user installing the vacuum cleaner body 110 onto the wet cleaning attachment 200, the trigger element begins to contact the driven member 1611 and apply force. This force, through the reversing member 1612 and the connecting member 165, drives the main air duct mating structure 162 and the secondary air duct mating structure 163 to work together, thereby switching the air duct switching mechanism 160 from the first state to the second state. Conversely, when the user removes the vacuum cleaner body 110 from the wet cleaning attachment 200, as the two separate, the force of the trigger element on the driven member 1611 gradually decreases and eventually disappears. At this time, the reset force of the elastic reset member 164 drives the moving parts to move in the opposite direction, causing the air duct switching mechanism 160 to return to the first state.

[0144] In this way, by setting a trigger, the switching between the main air duct 140 and the secondary air duct 150 is completed when the vacuum cleaner body 110 is installed or removed, avoiding the mixing of air ducts and eliminating the need for users to manually switch air ducts, thus reducing user operations.

[0145] See Figures 4 to 9 In one specific embodiment, the trigger is disposed at the junction of the wet cleaning attachment 200 and the vacuum cleaner body 110, and the trigger is a protruding structure 201 disposed on the wet cleaning attachment 200.

[0146] It is understood that the protrusion structure 201 can be a protrusion integrally formed with the fuselage component 202, or it can be a protrusion manufactured separately and fixedly installed on the top of the fuselage component 202. Of course, it can also be designed into other shapes.

[0147] When the vacuum cleaner body 110 and the wet cleaning attachment 200 are longitudinally aligned, the protruding structure 201 will precisely contact the driven member 1611. As the alignment continues, the protruding structure 201 generates a direct pushing force on the driven member 1611. This pushing force is used to drive the air duct switching mechanism 160 to switch from the first state to the second state.

[0148] Since the trigger element is a raised structure 201, the structure is simple and the cost is low. Furthermore, the raised structure 201 is a purely mechanical structure that drives the air duct switching mechanism 160 to operate through contact and force transmission, thus exhibiting high reliability and durability.

[0149] In another specific embodiment, the trigger is a connection sensor (not shown) disposed on the wet cleaning accessory 200. The trigger is configured to output an air duct switching signal to the vacuuming assembly 100 when the wet cleaning accessory 200 is connected to the vacuum cleaner body 110. The vacuuming assembly 100 is provided with an electronically controlled drive assembly (not shown). The electronically controlled drive assembly is configured to drive the air duct switching mechanism 160 to switch to the second state when triggered by the air duct switching signal.

[0150] The connection sensor is used to detect the docking status between the wet cleaning accessory 200 and the vacuum cleaner body 110 in real time. When docking is detected, the connection sensor outputs an air duct switching signal to the electronic control drive component, so that the electronic control drive component drives the air duct switching mechanism 160 to switch to the second state under the trigger of the air duct switching signal.

[0151] It is understood that the connection sensor can be at least one of an optical sensor, an infrared sensor, or a pressure sensor. The electronically controlled drive assembly typically includes a receiving circuit, a control unit (such as a microcontroller), and an actuator motor. After receiving the duct switching signal from the connection sensor, the receiving circuit, through the control unit, analyzes the signal and issues a command to drive the actuator motor to produce precise mechanical movement. This mechanical movement drives the duct switching mechanism 160 to switch to the second state. The signal can be transmitted via direct electrical contact connection, radio frequency (RF) communication, or infrared (IR) communication.

[0152] By selecting a connecting sensor as the trigger and setting an electronically controlled drive assembly, triggering can be achieved in the case of non-contact or slight contact. Furthermore, the electronically controlled drive assembly can precisely control the speed, force, and final stopping position of the duct switching mechanism 160, which can avoid severe mechanical collisions and help improve the service life and sealing reliability of the duct switching mechanism 160.

[0153] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications or equivalent substitutions made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A cleaning device, characterized in that, The system includes a wet cleaning attachment and a vacuuming assembly. The wet cleaning attachment is used for wet cleaning of the surface to be cleaned and is equipped with a negative pressure air duct and a connecting slot. The vacuuming assembly is configured to be detachably connected to the wet cleaning attachment and includes: Vacuum cleaner body; The negative pressure source component is located on the vacuum cleaner body; The main air duct has one end connected to the negative pressure source component and the other end forming a dust suction port; A dust cup is disposed along the path of the main air duct, and the suction port protrudes from the dust cup to form a suction nozzle; The secondary air duct extends along the air inlet direction of the dust cup, with one end connected to the negative pressure source assembly and the other end connected to the negative pressure air duct. When the vacuuming assembly is connected to the wet cleaning accessory, the secondary air duct is connected to the negative pressure air duct, and the nozzle is inserted into the mating slot.

2. The cleaning equipment according to claim 1, characterized in that, The wet cleaning accessory includes a floor brush assembly and a body assembly. One end of the body assembly is rotatably connected to the floor brush assembly, and the other end is provided with a mating surface for mating with the vacuuming assembly. The mating groove is provided on the mating surface, and the interface end of the negative pressure air duct is provided on the mating surface.

3. The cleaning equipment according to claim 2, characterized in that, The interface end of the negative pressure air duct protrudes from the mating surface. When the dust collection assembly is connected to the wet cleaning accessory, the interface end of the negative pressure air duct is inserted into the interface end of the secondary air duct.

4. The cleaning equipment according to claim 3, characterized in that, The interface end of the secondary air duct and the interface end of the negative pressure air duct form a shallow insertion fit, and the suction nozzle and the mating groove form a deep insertion fit.

5. The cleaning equipment according to claim 1, characterized in that, The secondary air duct abuts against the negative pressure air duct, and the suction nozzle is detachably and fixedly connected to the mating groove.

6. The cleaning equipment according to claim 1, characterized in that, The secondary air duct and the main air duct are arranged one in front of the other along the forward direction of the cleaning equipment, and the secondary air duct is located in front of the main air duct. The negative pressure port of the secondary air duct and the dust suction port are arranged in a front-to-back manner along the forward direction of the cleaning equipment, and the negative pressure port is located in front of the dust suction port. The interface end of the negative pressure air duct and the mating groove are arranged in front and behind each other along the forward direction of the wet cleaning accessory, and the interface end of the negative pressure air duct is located in front of the mating groove.

7. The cleaning equipment according to claim 1, characterized in that, The interface end of the secondary air duct is set roughly flush with the air inlet end of the dust cup near the dust suction port.

8. The cleaning equipment according to claim 1, characterized in that, The suction nozzle has a bent connection at one end near the dust cup. The bent connection is bent at an angle relative to the suction nozzle and is fixed to the air inlet end of the dust cup.

9. The cleaning equipment according to claim 1, characterized in that, During the connection process between the vacuuming assembly and the wet cleaning attachment, the nozzle contacts the wet cleaning attachment before the interface end of the secondary air duct.

10. The cleaning equipment according to claim 1, characterized in that, The suction port and the negative pressure port of the secondary air duct are oriented in the same direction, or the airflow direction at the inlet of the main air duct and the secondary air duct is the same.

11. The cleaning equipment according to claim 1, characterized in that, The secondary air duct and the dust cup share a common sidewall, and the ratio of the cross-sectional area of ​​the secondary air duct to the cross-sectional area of ​​the dust cup is between 1 / 20 and 1 / 4.

12. The cleaning equipment according to claim 2, characterized in that, The cleaning device also includes a locking mechanism for restricting the relative movement of the vacuuming assembly and the wet cleaning attachment in the separation direction after the vacuuming assembly is connected to the wet cleaning attachment. The separation direction is the direction in which the vacuuming component and the wet cleaning accessory move away from each other; The locking mechanism includes a locking element and a locking groove. The locking element is disposed on the wet cleaning accessory, and the locking groove is disposed on the vacuuming assembly. After the locking element and the locking groove are engaged, they are both located below the mating surface. The locking member is capable of elastic deformation in response to external force, and after the vacuuming assembly is connected to the wet cleaning accessory, the locking member can be engaged in the locking groove.

13. The cleaning equipment according to claim 12, characterized in that, The locking member includes a pressing part and a locking part disposed on the pressing part, the pressing part being disposed on the wet cleaning accessory; After the vacuuming assembly and the wet cleaning attachment are connected in place, the locking part engages with the locking groove.

14. The cleaning equipment according to claim 1, characterized in that, The vacuuming assembly also includes an air duct switching mechanism, which is configured to have at least a first state in a natural state and a second state in which the vacuuming assembly is connected to the wet cleaning accessory. The end of the main air duct furthest from the dust inlet is connected to the negative pressure source assembly via the air duct switching mechanism; the end of the secondary air duct furthest from the negative pressure air duct is connected to the negative pressure source assembly via the air duct switching mechanism. In the first state, the air duct switching mechanism connects the main air duct to the negative pressure source component and disconnects the secondary air duct from the negative pressure source component; in the second state, the air duct switching mechanism connects the secondary air duct to the negative pressure source component and disconnects the main air duct from the negative pressure source component.

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