sweeper

Abstract

This invention relates to a sweeping machine, comprising: a body; a drive wheel assembly arranged in a front-to-back direction; a separation mechanism disposed on the body, including a housing and a separation component, the housing having a chamber with an exhaust port, the separation component located within the chamber; the separation component located below the exhaust port; and a linkage component, the power input end of which is driven and connected to the drive wheel assembly, and the power output end of which is driven and connected to the separation component, used to, when the second side of the drive wheel assembly is in a downward movement state, cause at least a portion of the separation component to move upward to close the exhaust port; or, when the second side of the drive wheel assembly is in an upward movement state, cause at least a portion of the separation component to move downward to open the exhaust port. When the sweeping machine is lifted or tilted, the separation component moves upward to block the air passage, preventing sewage and garbage in the chamber from flowing out through the air passage and contacting the fan through the exhaust port, thus affecting the service life of the fan.

Description

Technical Field

[0001] This invention belongs to the field of household washing and cleaning, and specifically relates to a sweeping machine. Background Technology

[0002] Sweeping machines suck up a mixture of dust and moisture from the ground into their internal cavity. To separate the dust particles and moisture mixture, sweeping machines typically use a separation device.

[0003] Current robotic vacuum cleaners, such as the Chinese utility model patent "Vortex Filtration Separation System and Sweeping Robot and Equipment," patent application number ZL201921208546.0 (authorization announcement number CN210612041U), disclose a vortex filtration separation system, including a filter structure with a vortex channel cavity, a dust box structure embedded in the filter structure, a mesh support for connecting the filter structure and the dust box structure, and a HEPA support mounted on the dust box structure; the dust box structure has an installation cavity, a dust chamber communicating with the installation cavity, an air inlet communicating with the installation cavity, and an air outlet communicating with the dust chamber; the mesh support is equipped with a mesh, and the HEPA support is equipped with a HEPA filter; the filter structure is installed in the installation cavity, the vortex channel cavity includes a starting end and an ending end, and a plurality of outlets located between the starting end and the ending end; the starting end of the vortex channel cavity is connected to the air inlet, the outlet of the vortex channel cavity is connected to the dust chamber through the mesh support, and the ending end of the vortex channel cavity is connected to the dust chamber. The aforementioned separation module achieves the separation of water and dust particles. However, when the user picks up the sweeper from the ground or the sweeper tipes over, the water in the separation chamber will flow into the fan, causing the motor in the fan to malfunction.

[0004] Therefore, further improvements are needed to the existing sweeping machines. Summary of the Invention

[0005] The first technical problem to be solved by the present invention is to provide a sweeper that prevents water from entering the fan from the chamber when the sweeper is picked up or tilted, in light of the existing technology.

[0006] The second technical problem to be solved by the present invention is to provide a sweeper that prevents water in the chamber from flowing out to the ground through the cleaning module when the sweeper is picked up or tilted.

[0007] The technical solution adopted by the present invention to solve the first technical problem mentioned above is: a sweeping machine, comprising: Organism; The drive wheel assembly is used to drive the machine body forward. It is arranged in the front-back direction. The first side of the drive wheel assembly is rotatably mounted on the machine body so that the second side of the drive wheel assembly swings up and down relative to the machine body. When the bottom of the drive wheel assembly is in full contact with the ground, the second side is in an upward movement state. When the bottom of the drive wheel assembly is out of contact with the ground under the action of an external force, the second side is in a downward movement state. A separation mechanism is provided on the body and includes a housing and at least a separation element for separating dust and liquid. The housing has a chamber with an exhaust port for fluid communication with the blower of the sweeper. The separation element is located inside the chamber. The sweeper is characterized in that the separating component is located below the exhaust port, and the sweeper further includes: The linkage component, whose power input end is driven and connected to the drive wheel assembly and whose power output end is driven and connected to the separator, is used to enable at least a portion of the separator to move upward and close the exhaust port when the second side of the drive wheel assembly is in a downward movement state; or, when the second side of the drive wheel assembly is in an upward movement state, enable at least a portion of the separator to move downward and open the exhaust port.

[0008] The separating element can take the form of a separating plate and a baffle that moves relative to the separating plate, or it can take the form of a partially deformable separating plate, with the partially deformable part serving as the part that opens or closes the exhaust port. However, preferably, the separating element includes a separating plate that is fixed relative to the housing and a baffle that can move in the vertical direction to open or close the exhaust port. The baffle is located above the separating plate and is driven and connected to the power output end of the linkage assembly. Thus, under the action of the linkage assembly, the baffle moves upward to close the exhaust port and moves downward to open the exhaust port.

[0009] In order to reliably close the exhaust vent after the sweeper tilts over, the sweeper also includes a first elastic element that acts on the baffle and, in an energy-storing state, causes the baffle to always have an upward tendency to close the exhaust vent.

[0010] The linkage assembly can have various structural forms. It can employ a first connecting rod connected to the second side of the drive wheel assembly, a second connecting rod connected to the baffle, and a linkage component that causes the first and second connecting rods to move in opposite directions in the vertical direction. The linkage component can be in the form of a gear or a rope. However, preferably, the upper surface of the baffle has an upwardly extending protrusion. The linkage assembly includes: The rotating rod is V-shaped and located on the periphery of the protrusion. Its corner is arranged to rotate relative to the housing, and its first end is arranged to move up and down. The protrusion has an inclined surface that gradually slopes downward toward the rotating rod on the side facing the rotating rod. The transmission component has its power input end connected to the drive wheel assembly and its power output end connected to the first end of the rotating rod, at least causing the first end of the rotating rod to move upward. A movable rod extends along the arrangement direction of the rotating rod and the protrusion, one end of which contacts the second end of the rotating rod and moves away from the first end of the rotating rod under the push of the rotating rod; its other end has a pushing surface on the side facing the protrusion that is consistent with the inclination direction of the inclined surface and can contact the inclined surface; and The second elastic element acts on the movable rod, causing the movable rod to always tend to move toward the first end of the rotating rod.

[0011] To protect the drive wheel assembly, the body includes a bottom shell and a first cover. The bottom shell has a first through-hole at the position corresponding to the drive wheel assembly. The first cover covers the bottom shell and is located at the position corresponding to the first through-hole, and together with the bottom shell, they form a space for accommodating the drive wheel assembly.

[0012] There are various structural forms of transmission components, but preferably, the transmission component includes a moving member rotatably mounted on the first housing and moving up and down synchronously with the second side of the drive wheel assembly, and a pushing member moving upward with the moving member. The moving member is partially located below the first end of the rotating rod, and the pushing member is located between the moving member and the first end of the rotating rod. Alternatively, the transmission component can also employ a push rod that is fixedly connected to the second side of the drive wheel assembly, and the push rod extends vertically.

[0013] Preferably, the moving part is triangular in shape and arranged vertically. The first corner of the moving part adjacent to the first side of the drive wheel assembly rotates relative to the first cover and is coaxially arranged with the drive wheel assembly. The drive wheel assembly is provided with a driving part that pushes the second corner of the moving part. The third corner of the moving part is located below the first end of the rotating rod.

[0014] The technical solution adopted by the present invention to solve the second technical problem mentioned above is as follows: the housing has an air inlet channel connecting the chamber and the cleaning module of the sweeper. The air inlet channel is provided with a baffle plate that can rotate relative to the air inlet channel to open or block the air inlet channel. The baffle plate has a first state in which the air inlet channel is opened when the bottom of the sweeper is placed on the ground to be cleaned, and a second state in which the air inlet channel is blocked when the bottom of the sweeper is at least partially detached from the ground to be cleaned.

[0015] There are various ways to achieve the rotation of the baffle, such as using a motor to directly drive the baffle, using a drive wheel assembly, or other methods. However, preferably, the drive wheel assembly is a first drive wheel assembly. The sweeper also includes a second drive wheel assembly for driving the machine body forward and a transmission mechanism for driving the baffle to rotate and thus opening or closing the air intake channel. The first and second drive wheel assemblies are arranged at intervals along the left and right direction. The first side of the second drive wheel assembly is rotatably mounted on the machine body, and the second side is arranged to move up and down relative to the machine body. The power input end of the second drive wheel assembly is driven and connected to the transmission mechanism, so that when the second side of the second drive wheel assembly is in contact with the ground and is in an upward movement state, it drives the baffle to rotate to the first state of opening the air intake channel, and when the second side of the second drive wheel assembly is out of contact with the ground and is in a downward movement state, it drives the baffle to rotate to the second state of closing the air intake channel.

[0016] Preferably, the wind deflector is installed in the air inlet channel via a rotating shaft, the rotating shaft being at least partially located outside the air inlet channel and arranged adjacent to the transmission mechanism, the portion of the rotating shaft outside the air inlet channel being drivenly connected to the transmission mechanism.

[0017] To protect the second drive wheel assembly, the body includes a bottom shell and a second cover. The bottom shell has a second through-hole at the position corresponding to the drive wheel assembly. The second cover covers the bottom shell and is located at the position corresponding to the second through-hole, and together with the bottom shell, they form a space for accommodating the second drive wheel assembly.

[0018] There are various structural forms of the transmission mechanism. One form can be a combination of a vertical rod and a horizontal rod. The vertical rod is arranged vertically, with its upper end above the second housing and its lower end connected to the top surface of the drive wheel assembly, moving up and down under the drive of the drive wheel assembly. The horizontal rod is located above the second housing and arranged along the length of the rotating shaft. It is rotatably mounted on the upper surface of the second housing near its center, with its first end rotatably connected to the upper end of the vertical rod, and its second end acting on the extension rod near its free end, causing the second end of the extension rod to move up and down, thereby rotating the rotating shaft. Another form can be an extension rod extending laterally and located outside the air inlet channel on the outer wall of the rotating shaft. The transmission mechanism includes a movable component rotatably mounted on the second housing and moving up and down synchronously with the second side of the drive wheel assembly, and a push rod that moves upward with the movable component. The movable component is partially located below the extension rod, and the push rod is located between the movable component and the extension rod. It also includes a third elastic component that acts on the extension rod and causes it to have a downward tendency in an energy-storing state.

[0019] To improve separation capability, the surface where the exhaust port is located is arranged horizontally, and a vertically extending annular component is provided in the cavity. The annular component's ring wall surrounds the outer periphery of the exhaust port, forming a flow channel connected to the exhaust port. The separation component is located in the flow channel of the annular component, and a gap is left between it and the inner peripheral wall of the annular component to allow air to pass through.

[0020] To improve separation efficiency by altering the fluid flow direction and increasing the number of collisions, the separation plate covers the exhaust port along the projection of the fluid flow direction within the exhaust port onto the surface of the exhaust port. Thus, the airflow before reaching the exhaust port collides with the annular component, then with the separation plate, and flows into the exhaust port after passing through a gap. Therefore, the separation plate and the annular component achieve airflow separation, causing large particles or heavy waste to settle at the bottom of the chamber. Furthermore, a filter screen, typically installed between the exhaust port and the blower along the fluid flow path, reduces the need for subsequent filtration and extends the filter screen's lifespan.

[0021] Preferably, the bottom opening of the annular component is an air passage opposite to the exhaust port, located below the exhaust port and upstream of the exhaust port along the fluid flow path. The separation plate covers the air passage along the projection of the fluid flow direction within the air passage onto the surface where the air passage is located. In this way, the fluid flowing in through the vent is blocked by the separation component, thus achieving the separation of dust and liquid.

[0022] In order to reduce the amount of water flowing into the exhaust duct from the chamber when the sweeper tilts, the inner peripheral wall of the annular component is provided with a vertically extending extension plate, the separation plate is disposed on the extension plate, and the gap is formed between the separation plate, the extension plate and the annular component.

[0023] To further improve separation capability, the top surface of the extension plate contacts the bottom surface of the wall panel where the exhaust vent is located, and the bottom surface of the extension plate contacts the bottom surface of the annular component. This reduces the water flow rate splashed onto the top surface of the chamber.

[0024] The annular component can have various structural forms, including a vertical form, a completely converging section, or a combination of converging and vertical sections. Preferably, the annular component's wall includes a first converging section that gradually narrows inwards from top to bottom, with the extension plate at least partially located on the inner wall of this first converging section. This reduces the air velocity entering the first converging section, allowing waste and sewage sucked into the annular component to fall back down by gravity during shutdown or even cleaning. Furthermore, in this state, the gap between the separation plate and the inner wall of the annular component gradually narrows along the fluid flow path, resulting in a high airflow velocity and easier upward flow.

[0025] Compared with the prior art, the advantages of the present invention are as follows: the separating component in the separating module of the sweeper opens or blocks the exhaust port under the drive of the drive wheel assembly. That is, when the drive wheel assembly of the sweeper is in contact with the ground, the separating component moves downward to open the exhaust port, so that the separated airflow can be discharged when the sweeper is running normally. When the sweeper is lifted or tilted so that the drive wheel assembly is in a non-contact state off the ground, the second side of the drive wheel assembly moves downward, driving the separating component upward to block the air passage, preventing sewage and garbage in the chamber from flowing out through the air passage and coming into contact with the fan through the exhaust port, thus affecting the service life of the fan. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the sweeper in this embodiment; Figure 2 for Figure 1 Partial structural diagram; Figure 3 for Figure 1 A cross-sectional view of the sweeper in contact with the floor to be cleaned; Figure 4 for Figure 1 A cross-sectional view of part of the structure from another angle; Figure 5 for Figure 2 A partial structural diagram of a sweeping machine in its off-ground state; Figure 6 for Figure 5 A sectional view; Figure 7 for Figure 5 Another sectional view. Detailed Implementation

[0027] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0028] like Figures 1 to 7 As shown, the sweeper in this embodiment includes a body 1, a drive wheel assembly, a transmission mechanism 7, a second drive wheel assembly 9, a first elastic element, a third elastic element, a separation mechanism 02, a fan, a filter element, a linkage assembly 4, and a cleaning module for cleaning the floor. Along the airflow path, the separation mechanism 02 is located between the cleaning module and the fan, with the cleaning module upstream of the separation module. The air inlet of the separation module is connected to the cleaning module, and the outlet of the separation module, after passing through the filter element, is connected to the inlet of the fan. Under the action of the fan, a negative pressure is created within the cleaning module and the separation module, thereby drawing dust, water, particles, and other debris into the cleaning module through its suction port. The separated gas is then discharged, and the separated wastewater is stored within the chamber of the separation module.

[0029] The drive wheel assembly is a first drive wheel assembly 8. Both the first drive wheel assembly 8 and the second drive wheel assembly 9 are mounted on the body 6 and are arranged at intervals along the left and right directions to drive the body 6 forward. Specifically, the first drive wheel assembly 8 is located to the left of the second drive wheel assembly 9.

[0030] To protect the drive wheel assembly, the aforementioned body 1 includes a bottom shell 11, a top cover 14, a first cover 12, and a second cover 13. The bottom shell 11 has a first through-hole 111 at the position corresponding to the first drive wheel assembly 8 and a second through-hole 112 at the position corresponding to the second drive wheel assembly 9. The first cover 12 covers the bottom shell 11 and corresponds to the through-hole 111, forming a space between the cover 12 and the bottom shell 11 to accommodate the first drive wheel assembly. The second cover 13 covers the bottom shell 11 and corresponds to the second through-hole 112, forming a space between the cover 13 and the bottom shell 11 to accommodate the second drive wheel assembly. The top cover 14 covers the bottom shell 11, and both the first cover 12 and the second cover 13 are located within the space enclosed by the top cover 14 and the bottom shell 11. The specific structures of the first drive wheel assembly 8, the second drive wheel assembly 9, and the cleaning module in this embodiment adopt existing technologies and will not be described in detail here. Both the first drive wheel assembly 8 and the second drive wheel assembly 9 are arranged along the front-rear direction. The first side of the first drive wheel assembly 8 is rotatably mounted on the body 1, allowing the second side of the first drive wheel assembly 8 to swing up and down relative to the body. When the bottom of the first drive wheel assembly 8 is fully in contact with the ground, the second side of the first drive wheel assembly 8 moves upwards; when the bottom of the first drive wheel assembly 8 is removed from contact with the ground under external force, the second side of the first drive wheel assembly 8 moves downwards. Similarly, the first side of the second drive wheel assembly 9 is rotatably mounted on the body 1, allowing the second side of the second drive wheel assembly 9 to swing up and down relative to the body. When the bottom of the second drive wheel assembly 9 is fully in contact with the ground, the second side of the second drive wheel assembly 9 moves upwards; when the bottom of the second drive wheel assembly 9 is removed from contact with the ground under external force, the second side of the second drive wheel assembly 9 moves downwards. In this embodiment, the first side is the front side and the second side is the rear side. Alternatively, the first side can be the rear side and the second side the front side. The method for achieving the up-and-down swing of the first drive wheel assembly and the second drive wheel assembly adopts the structure of existing technology, which will not be described in detail in this embodiment.

[0031] The separation mechanism 02 is fixed relative to the body 1 and includes a housing 2 and at least a separation element 3 for separating dust and liquid. The housing 2 has a chamber 20 inside, and the chamber 20 has an exhaust port 201. The surface where the exhaust port 201 is located is arranged laterally, such as... Figure 3 As shown, the housing 2 has an air outlet channel 24 connected to the exhaust port 201, located above the exhaust port 201. The separator 3 is located inside the chamber 20 and below the exhaust port 201; specifically, to improve the separation capability, a vertically extending annular member 23 is provided inside the chamber 20, such as... Figure 6As shown, the annular component 23 has a first contraction section 231 that gradually narrows inward from top to bottom, and a vertical section 232 connected to the top edge of the first contraction section 231. The annular component 23 surrounds the exhaust port 201, forming a flow channel connected to the exhaust port 201. The separator 3 is located in the flow channel of the annular component 23, and a gap is left between it and the inner peripheral wall of the annular component 23 for air to pass through. In this way, the air velocity entering the first contraction section becomes smaller and smaller, which makes it easier for the garbage and sewage sucked into the annular component to fall back down by gravity when the machine stops or even during cleaning. In this state, the gap between the separator plate and the inner wall of the annular component gradually narrows along the fluid flow path, resulting in a large airflow velocity and making the airflow easier to flow upward.

[0032] To improve separation efficiency by altering the fluid flow direction and increasing the number of collisions, the separation plate 31 covers the exhaust port 201 along the projection of the fluid flow direction onto the surface of the exhaust port 201. Thus, the airflow before reaching the exhaust port collides with the annular component, then with the separation plate, and flows into the exhaust port after passing through a gap. Therefore, the separation plate and the annular component achieve airflow separation, causing large particles or heavy waste to settle at the bottom of the chamber. A filter screen, typically installed between the exhaust port and the blower along the fluid flow path, reduces the need for subsequent filtration, increasing the filter screen's lifespan. The bottom opening of the annular component 23 is an air passage 230 opposite the exhaust port 201, located below the exhaust port 201 and upstream of it along the fluid flow path.

[0033] like Figure 3 As shown, the separating member 3 in this embodiment includes a separating plate 31 fixed relative to the housing 2 and a baffle 32 that can move along the vertical direction to open or close the exhaust port 201. The baffle 32 is located above the separating plate 31. Alternatively, the separating member can also be in the form of a partially deformable separating plate, with the partially deformable part serving as the part for opening or closing the exhaust port. The aforementioned first elastic member acts on the baffle 32 and is a first spring 33 that, in an energy-storing state, ensures that the baffle 32 always has an upward tendency to close the exhaust port 201. Specifically, the baffle 32 has a groove 322 extending along the vertical direction, and the top surface of the separating plate 31 has a sliding rod 314 extending upward and slidingly engaging with the groove. The first spring 33 is sleeved on the sliding rod 314, with its upper end abutting against the baffle 32 and its lower end abutting against the separating plate 31. The presence of the first spring reliably closes the exhaust port after the sweeper tilts over.

[0034] like Figure 3 and Figure 6As shown, the projection of the separation plate 31 onto the surface of the air vent 230 along the flow direction of the fluid inside the air vent 230 covers the air vent 230. Thus, the fluid flowing in through the air vent is blocked by the separation component, achieving separation of dust and liquid. To reduce water flow into the exhaust duct from the chamber when the sweeper tilts, a vertically extending extension plate 2311 is provided on the inner peripheral wall of the annular member 23, with a portion of the extension plate 2311 located on the inner wall of the first contraction section 231. To further improve separation capability, the top surface of the extension plate 2311 contacts the bottom surface of the wall panel where the exhaust vent 201 is located, and the bottom surface of the extension plate 2311 contacts the bottom surface of the annular member 23, thereby reducing the water flow splashed onto the top surface of the chamber. In this embodiment, there are two extension plates 2311, which are arranged at intervals along the circumference of the annular member 23. The separation plate 31 is disposed on the extension plate 2311, and a gap is formed between the separation plate 31, the extension plate 2311 and the annular member 23.

[0035] like Figure 3 and Figure 6 As shown, the baffle 32 is driven and connected to the power output end of the linkage assembly 4. The upper surface of the baffle 32 has an upwardly extending protrusion 321, and the outer peripheral surface of the protrusion 321 gradually slopes outward from top to bottom, that is, the left side of the protrusion 321 has an inclined surface 3211 that gradually slopes to the left from top to bottom.

[0036] The power input end of the linkage component 4 is driven and connected to the first drive wheel assembly 8. When the second side of the first drive wheel assembly 8 is in an upward movement state, it causes at least a portion of the separating member 3 to move downward, thus opening the exhaust port 201; or when the second side of the first drive wheel assembly 8 is in a downward movement state, it causes at least a portion of the separating member 3 to move upward, thus closing the exhaust port 201. The linkage component includes a rotating rod 41, a transmission assembly 42, a movable rod 43, and a second elastic member. The rotating rod 41 is V-shaped and located to the left of the protrusion 321, meaning that the inclined surface 3211 gradually slopes downward towards the rotating rod 41. The corner of the aforementioned rotating rod 41 is arranged to rotate relative to the housing 2, and the first end 411 (left end) of the rotating rod 41 is arranged to move up and down; the power input end of the transmission assembly 42 is drivenly connected to the first drive wheel assembly 8, and the power output end of the transmission assembly 42 can be drivenly connected to the first end 411 of the rotating rod 41, and can drive the first end 411 of the rotating rod 41 to move upward; the transmission assembly 42 includes a moving member 421 rotatably mounted on the first housing 12 and moving up and down synchronously with the second side of the first drive wheel assembly 8, and a pushing member 422 that can move upward with the moving member 421, the moving member 421 being partially located below the first end 411 of the rotating rod 41. Figure 4As shown, the aforementioned moving member 421 is generally triangular and vertically arranged. The first corner 4211 of the moving member 421, adjacent to the first side of the drive wheel assembly, rotates relative to the first cover and is coaxially arranged with the drive wheel assembly. The drive wheel assembly is provided with a driving part 81 that pushes the second corner 4212 of the moving member 421. The third corner 4213 of the moving member 421 is located below the first end 411 of the rotating rod 41. The pushing member 422 is located between the third corner 4213 of the moving member 421 and the first end 411 of the rotating rod 41, and is a vertically extending rod. In this embodiment, the pushing member 422 is mounted on the top cover 14 and can move up and down relative to the top cover 14. Alternatively, the transmission assembly can also employ a push rod that is fixedly connected to the second side of the first drive wheel assembly 8, and the push rod extends vertically.

[0037] like Figure 3 As shown, the movable rod 43 extends along the arrangement direction of the rotating rod 41 and the protrusion 321, that is, it extends in the left and right direction. The left end of the movable rod 43 contacts the second end 412 of the rotating rod 41. The right end of the rotating rod 41 has a pushing surface 431 on the side facing the protrusion 321, which is in the same direction as the inclined surface 3211 and can contact the inclined surface 3211. The second elastic member acts on the movable rod 43 and is a second spring 44 that makes the movable rod 43 always have a tendency to move to the left. Thus, the aforementioned movable rod 43 can move to the right under the push of the rotating rod 41, and through the cooperation of the inclined surface 3211 and the pushing surface 431, it drives the baffle 32 to move downward and open the exhaust port; when the second end 412 of the rotating rod 41 moves to the left, the movable rod 43 moves to the left under the action of the second spring 44, and through the cooperation of the inclined surface 3211 and the pushing surface 431, the baffle 32 moves upward under the action of the first spring 33 and closes the exhaust port 201.

[0038] The housing 2 has an air inlet channel 21 connecting the chamber 20 and the cleaning module 01 of the sweeper. The air inlet channel 21 is provided with a baffle 22 that can rotate relative to the air inlet channel 21 to open or close it. The baffle 22 has a first state in which the air inlet channel 21 is open when the bottom of the sweeper is placed on the ground to be cleaned, and a second state in which the air inlet channel 21 is closed when the bottom of the sweeper is at least partially out of contact with the ground to be cleaned. The transmission mechanism 7 is used to drive the baffle 22 to rotate, thereby opening or closing the air inlet channel 21. The power input end of the second drive wheel assembly 9 is driven and connected to the transmission mechanism 7, so that when the second side of the second drive wheel assembly 9 is in an upward movement state, it drives the baffle 22 to rotate to the first state of opening the air inlet channel 21, and when the second side of the second drive wheel assembly 9 is in a downward movement state, it drives the baffle 22 to rotate to the second state of closing the air inlet channel 21.

[0039] Specifically, the baffle plate 22 is installed inside the air inlet channel 21 via a rotating shaft 221. An extension rod 222, extending laterally and located on the right side of the air inlet channel 21, is provided on the outer wall of the rotating shaft 221. The extension rod 222 is located on the right side of the air inlet channel and is arranged adjacent to the transmission mechanism 7. The transmission mechanism 7 includes a movable member 76 rotatably mounted on the second housing 13 and moving synchronously up and down with the second side of the drive wheel assembly, and a push rod 761 that moves upward with the movable member 76. The movable member 76 is partially located below the extension rod, and the push rod 761 is located between the movable member 76 and the extension rod 222. It also includes a third elastic member acting on the extension rod 222 and causing the extension rod 222 to have a downward tendency in the energy storage state. The third elastic member is a torsion spring 223 sleeved on the rotating shaft 221. In this embodiment, the structure of the movable member 76 is the same as that of the movable member, and the working principle of the aforementioned drive assembly is the same as that of the transmission mechanism 7. These details will not be elaborated further in this embodiment.

[0040] The working process of the sweeper described above is as follows: When the sweeper is lifted or tilted, and the first drive wheel assembly 8 is in a non-contact, off-ground state with the surface to be cleaned, the rear of the first drive wheel assembly 8 moves downward. At this time, the moving part 421 rotates downward under its own weight, and the third corner 4213 of the moving part 421 moves downward. At this time, the pushing part 422 moves downward. Since the second end of the rotating rod 41 can move to the left, the movable rod 43 moves to the left under the action of the second spring 44. Through the cooperation of the inclined surface 3211 and the pushing surface 431, the baffle 32 moves upward under the action of the first spring 33, thus closing the exhaust port 201. When the second drive wheel assembly 9 is in a non-contact, off-ground state with the surface to be cleaned, the rear of the second drive wheel assembly 9 moves downward. The movable part 76 rotates downward under its own weight, and the push rod 761 moves downward. The extension rod 222, under the action of the torsion spring 223, drives the baffle to rotate to the second state of closing the air intake channel.

[0041] When the sweeper is placed on the ground and is working normally, when the first drive wheel assembly 8 contacts the surface to be cleaned, the rear side of the first drive wheel assembly 8 is in an upward movement state. Under the push of the drive unit 81, the second corner 4212 of the moving part 421 moves upward, and pushes the aforementioned pusher 422 upward, which in turn drives the first end of the rotating rod 41 to move upward. The movable rod 43 can move to the right under the push of the rotating rod 41. Through the cooperation of the inclined surface 3211 and the push surface 431, the baffle 32 moves downward and opens the exhaust port. When the second drive wheel assembly 9 is in contact with the ground to be cleaned, the rear side of the second drive wheel assembly 9 is in an upward movement state. Under the push of the second drive wheel assembly 9, the movable part 76 rotates upward and drives the push rod 761 to move upward. The push rod 761 pushes the extension rod to rotate in the opposite direction, which in turn drives the baffle to open the exhaust channel.

[0042] The specification and claims of this invention use terms indicating direction, such as "front," "rear," "upper," "lower," "left," "right," "side," "top," and "bottom," to describe various exemplary structural parts and elements of the invention. However, these terms are used herein merely for ease of explanation and are determined based on the exemplary orientations shown in the accompanying drawings. Since the embodiments disclosed in this invention can be arranged in different orientations, these terms indicating direction are for illustrative purposes only and should not be considered as limitations. For example, "upper" and "lower" are not necessarily limited to directions opposite to or consistent with the direction of gravity.

Claims

1. A sweeping machine, comprising: Body (1); The drive wheel assembly is used to drive the body (1) to move forward. It is arranged in the front-back direction. The first side of the front and back sides is rotatably mounted on the body (1) so that the second side of the front and back sides swings up and down relative to the body. When the bottom of the drive wheel assembly is in full contact with the ground, its second side is in an upward movement state. When the bottom of the drive wheel assembly is out of contact with the ground under the action of external force, its second side is in a downward movement state. A separation mechanism (02) is provided on the body (1) and includes a housing (2) and at least a separation element (3) for separating dust and liquid. The housing (2) has a chamber (20) inside, and the chamber (20) has an exhaust port (201) for fluid communication with the fan of the sweeper. The separation element (3) is located inside the chamber (20). Its features are, The separator (3) is located below the exhaust port (201), and the sweeper also includes: The linkage component (4), whose power input end is driven and connected to the drive wheel assembly, and whose power output end is driven and connected to the separator (3), is used to enable at least a portion of the separator (3) to move upward and close the exhaust port (201) when the second side of the drive wheel assembly is in a downward movement state; or, when the second side of the drive wheel assembly is in an upward movement state, enable at least a portion of the separator (3) to move downward and open the exhaust port (201). The separating component (3) includes a separating plate (31) fixed relative to the housing (2) and a baffle (32) that can move in the up and down direction to open or close the exhaust port (201). The baffle (32) is located above the separating plate (31) and is driven and connected to the power output end of the linkage component (4). The upper surface of the baffle (32) has an upwardly extending protrusion (321), and the linkage assembly (4) includes: The rotating rod (41) is V-shaped and located on the periphery of the protrusion (321). Its corner is arranged to rotate relative to the housing (2), and its first end (411) is arranged to move up and down. The protrusion (321) has an inclined surface (3211) on the side facing the rotating rod (41) that gradually slopes downward toward the rotating rod (41). The transmission assembly (42) has its power input end connected to the drive wheel assembly and its power output end connected to the first end (411) of the rotating rod (41), which at least drives the first end (411) of the rotating rod (41) to move upward. A movable rod (43) extends along the arrangement direction of the rotating rod (41) and the protrusion (321), one end of which contacts the second end (412) of the rotating rod (41) and moves away from the first end (411) of the rotating rod (41) under the push of the rotating rod (41). Its other end has a pushing surface (431) on the side facing the protrusion (321) that is in the same direction as the inclined surface (3211) and can contact the inclined surface (3211); and The second elastic element acts on the movable rod (43) and causes the movable rod (43) to always have a tendency to move toward the first end (411) of the rotating rod (41).

2. The sweeper according to claim 1, characterized in that: It also includes a first elastic element that acts on the baffle (32) and, in the energy storage state, causes the baffle (32) to always have an upward tendency to close the exhaust port (201).

3. The sweeper according to claim 1, characterized in that: The body (1) includes a bottom shell (11) and a first cover (12). The bottom shell (11) has a first through-hole (111) at the position corresponding to the drive wheel assembly. The first cover (12) covers the bottom shell (11) and is located at the position corresponding to the first through-hole (111), and together with the bottom shell (11), they form a space for accommodating the drive wheel assembly.

4. The sweeper according to claim 3, characterized in that: The transmission assembly (42) includes a moving part (421) rotatably mounted on the first cover (12) and moving up and down synchronously with the second side of the drive wheel assembly, and a pushing part (422) moving upward with the moving part (421). The moving part (421) is partially located below the first end (411) of the rotating rod (41), and the pushing part (422) is located between the moving part (421) and the first end (411) of the rotating rod (41).

5. The sweeper according to claim 4, characterized in that: The moving part (421) is triangular in shape and arranged vertically. The first corner (4211) of the moving part (4211) adjacent to the first side of the drive wheel assembly rotates relative to the first cover and is arranged coaxially with the drive wheel assembly. The drive wheel assembly is provided with a drive part (81) that pushes the second corner (4212) of the moving part (421). The third corner (4213) of the moving part (421) is located below the first end (411) of the rotating rod (41).

6. The sweeper according to claim 1, characterized in that: The housing (2) has an air inlet channel (21) connecting the chamber (20) and the cleaning module of the sweeper. The air inlet channel (21) is provided with a baffle (22) that can rotate relative to the air inlet channel (21) to open or block the air inlet channel (21). The baffle (22) has a first state in which the air inlet channel (21) is opened when the bottom of the sweeper is placed on the ground to be cleaned, and a second state in which the air inlet channel (21) is blocked when the bottom of the sweeper is at least partially detached from the ground to be cleaned.

7. The sweeper according to claim 6, characterized in that: The drive wheel assembly is a first drive wheel assembly (8). The sweeper also includes a second drive wheel assembly (9) for driving the machine body (1) forward and a transmission mechanism (7) for driving the baffle plate (22) to rotate and thus open or close the air intake channel (21). The first drive wheel assembly (8) and the second drive wheel assembly (9) are arranged at intervals along the left and right direction. The first side of the front and rear sides of the second drive wheel assembly (9) is rotatably mounted on the machine body (1), and the second side of the front and rear sides is arranged to move up and down relative to the machine body (1). The power input end of the second drive wheel assembly (9) is driven and connected to the transmission mechanism (7), so that when the second side of the second drive wheel assembly (9) is in an upward movement state, it drives the baffle plate (22) to rotate to the first state of opening the air intake channel (21), and when the second side of the second drive wheel assembly (9) is in a downward movement state, it drives the baffle plate (22) to rotate to the second state of closing the air intake channel (21).

8. The sweeper according to claim 7, characterized in that: The baffle plate (22) is installed in the air inlet channel (21) via a rotating shaft (221). The rotating shaft (221) is at least partially located outside the air inlet channel (21) and is arranged adjacent to the transmission mechanism (7). The portion of the rotating shaft (221) located outside the air inlet channel (21) is driven and connected to the transmission mechanism (7).

9. The sweeper according to claim 8, characterized in that: The body (1) includes a bottom shell (11) and a second cover (13). The bottom shell (11) has a second through opening (112) at the position corresponding to the second drive wheel assembly (9). The second cover (13) covers the bottom shell (11) and is located at the position corresponding to the second through opening (112). The cover (13) and the bottom shell (11) enclose a space for accommodating the second drive wheel assembly (9).

10. The sweeper according to claim 9, characterized in that: The outer wall of the rotating shaft (221) is provided with an extension rod (222) that extends laterally and is located outside the air inlet channel (21). The transmission mechanism (7) includes a movable member (76) that is rotatably disposed on the second cover (13) and moves up and down synchronously with the second side of the drive wheel assembly, and a push rod (761) that moves upward with the movable member (76). The movable member (76) is partially located below the extension rod, and the push rod (761) is located between the movable member (76) and the extension rod (222). It also includes a third elastic member that acts on the extension rod (222) and causes the extension rod (222) to have a downward tendency in the energy storage state.

11. The sweeper according to any one of claims 1 to 10, characterized in that: The surface where the exhaust port (201) is located is arranged horizontally. A vertically extending annular component (23) is provided in the chamber (20). The annular wall of the annular component (23) surrounds the outer periphery of the exhaust port (201) to form a flow channel connected to the exhaust port (201). The separating component (3) is located in the flow channel of the annular component (23) and a gap is left between it and the inner peripheral wall of the annular component (23) for air to pass through.

12. The sweeper according to claim 11, characterized in that: The separation plate (31) covers the exhaust port (201) along the projection of the fluid flow direction inside the exhaust port (201) onto the surface where the exhaust port (201) is located.

13. The sweeper according to claim 11, characterized in that: The bottom opening of the annular component (23) is an air passage (230) opposite to the exhaust port (201). The air passage (230) is located below the exhaust port (201). Along the fluid flow path, the air passage (230) is located upstream of the exhaust port (201). The separation plate (31) covers the air passage (230) along the projection of the fluid flow direction inside the air passage (230) onto the surface where the air passage (230) is located.

14. The sweeper according to claim 11, characterized in that: The inner peripheral wall of the annular component (23) is provided with a vertically extending extension plate (2311), the separation plate (31) is disposed on the extension plate (2311), and the gap is formed between the separation plate (31), the extension plate (2311) and the annular component (23).

15. The sweeper according to claim 14, characterized in that: The top surface of the extension plate (2311) is in contact with the bottom surface of the wall panel where the exhaust port (201) is located, and the bottom surface of the extension plate (2311) is in contact with the bottom surface of the annular component (23).

16. The sweeper according to claim 14, characterized in that: The annular component (23) has a first contraction section (231) that gradually contracts inward from top to bottom, and the extension plate (2311) is at least partially located on the inner wall of the first contraction section (231).

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