Automatic lifting and external expanding device of cleaning assembly

Abstract

The utility model relates to the field of household appliances for floor sweeping and mopping, in particular to an automatic lifting and external expanding device of a cleaning component, which comprises a shell with a cleaning piece mounting groove, a cleaning module assembled in the cleaning piece mounting groove and a driving mechanism connected between the shell and the cleaning module. The cleaning module comprises a main body structure and a cleaning assembly connected with the main body structure, the driving mechanism is in transmission connection with the main body structure, and when the cleaning module is in the first storage state, the cleaning assembly is located in the cleaning piece mounting groove, and a gap is reserved in a to-be-cleaned surface; when the cleaning module is in the first cleaning state, the cleaning assembly is located in the cleaning piece mounting groove and makes contact with a to-be-cleaned surface; and when the cleaning module is in the second cleaning state, one end of the cleaning assembly extends out and is in contact with a to-be-cleaned surface. The cleaning assembly is driven to stretch out of / retract into the cleaning piece mounting groove according to needs, and various cleaning requirements of users are met.

Description

Technical Field

[0001] This utility model relates to the field of household appliances for sweeping and mopping, and more particularly to an automatic lifting and expansion device for a cleaning component. Background Technology

[0002] With the increasing popularity of smart cleaning equipment, roller-type cleaning devices are widely used in the field of robotic vacuum cleaners due to their efficient floor adhesion. In existing technology, the cleaning roller is typically fixed to the bottom of the device. When the robot is cleaning carpets, if the cleaning components are wet and dirty and cannot be lifted, the carpet will be soaked and contaminated. Furthermore, even when not wet mopping, the cleaning components remain in contact with the floor, causing the mop fibers to be deformed under pressure over time, accelerating wear and affecting cleaning efficiency and obstacle-crossing height. Especially when the device is performing mapping, recharging, or simply vacuuming functions, the inability to effectively lift the roller off the floor results in energy waste and reduced component lifespan.

[0003] Furthermore, traditional cleaning devices have significant limitations when dealing with edge areas such as walls and under furniture. Because the roller is always within the projected area of ​​the main unit, hard-to-reach corners on the wall cannot be effectively covered during cleaning. Some improvements attempt to supplement cleaning by adding side-mounted auxiliary cleaning mops, but such designs not only increase the complexity of the overall structure but also lead to increased costs and higher failure rates. Summary of the Invention

[0004] To address the aforementioned issues, this invention provides an automatic lifting and expansion device for a cleaning component, ensuring that the cleaning component can automatically rise and fall according to the cleaning environment and conditions, while also possessing the ability to extend cleaning to corners.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is: an automatic lifting and expansion device for a cleaning component.

[0006] It includes a housing with a cleaning component mounting slot, a cleaning module assembled in the cleaning component mounting slot, and a drive mechanism connected between the housing and the cleaning module;

[0007] The cleaning module includes a main structure and a cleaning component connected to the main structure. The driving mechanism is connected to the main structure and can drive the main structure to move up and down along the vertical direction of the cleaning component mounting groove and to translate along the length direction of the cleaning component mounting groove.

[0008] The cleaning module has a first storage state, a first cleaning state, and a second cleaning state;

[0009] When the cleaning module is in the first storage state, the cleaning component is located inside the cleaning part mounting slot and a gap is maintained on the surface to be cleaned;

[0010] When the cleaning module is in the first cleaning state, the cleaning component is located inside the cleaning component mounting slot and moves downward along the height direction of the cleaning component mounting slot and contacts the surface to be cleaned.

[0011] When the cleaning module is in the second cleaning state, one end of the cleaning component extends out of the outside of the cleaning component mounting groove and contacts the surface to be cleaned.

[0012] Furthermore, the driving mechanism includes a drive motor, a transmission screw connected to the shaft of the drive motor, and a transmission nut fitted with the transmission screw; the drive motor is connected to the housing, and the transmission screw is arranged along the length direction of the cleaning component mounting groove; the main structure is provided with a connecting arm, and the transmission nut is provided with a connecting part for cooperating with the connecting arm, the connecting arm cooperating with the connecting part and being driven by the connecting part to move horizontally and vertically.

[0013] Furthermore, the surface of the housing is provided with a guide groove extending along the length direction of the cleaning component mounting groove, and the bottom plate of the guide groove is provided with a guide limiting hole extending along the length direction of the cleaning component mounting groove; the connecting arm passes through the guide limiting hole and engages with the joint.

[0014] Furthermore, the connecting part includes a frame structure connected to the transmission nut and a guide rail disposed in the frame structure for driving the connecting arm to rise and fall; the connecting arm is slidably connected to the guide rail, and when the connecting arm is at the end of the guide rail, the end plate of the frame structure blocks the connecting arm and can drive the connecting arm to translate.

[0015] When the cleaning module is in the first storage state, the cleaning component is in the raised state in the cleaning component mounting slot;

[0016] When the cleaning module is in the first cleaning state, the cleaning component is in the cleaning part mounting slot and is in a lowered state;

[0017] When the cleaning module is in the second cleaning state, one end of the cleaning component extends out of the outside of the cleaning component mounting groove and is in a lowered state.

[0018] Furthermore, one end of the main structure is provided with a connecting arm, and the other end is provided with two connecting arms positioned on both sides of the transmission screw; one end of the frame structure is provided with a guide rail, and the other end is provided with a guide rail aligned with the two connecting arms.

[0019] Furthermore, the joint also includes sliding blocks sleeved on both sides of the transmission nut and connected to the frame structure. The sliding block has a nut groove in the middle for placing the transmission nut. The transmission nut moves along the direction of the transmission screw and simultaneously drives the sliding block to move along the direction of the transmission screw.

[0020] Furthermore, the frame structure is also equipped with detection plates, and the surface of the housing is sequentially equipped with a first detection switch, a second detection switch, and a third detection switch along the length of the cleaning component mounting groove.

[0021] When the cleaning module is in the first storage state, the detection plate triggers the first detection switch;

[0022] When the cleaning module is in the first cleaning state, the detection plate triggers the second detection switch;

[0023] When the cleaning module is in the second cleaning state, the detection plate triggers the third detection switch.

[0024] Furthermore, the drive mechanism also includes a transmission guide rod mounted in the frame and located on both sides of the transmission screw. One end of the transmission guide rod passes through the sliding block and is connected to the housing, while the other end is mounted on the other side of the housing.

[0025] Furthermore, the frame structure includes a first end plate and a second end plate spaced apart along the length of the cleaning component mounting groove. The first end of the guide rail is connected to the first end plate, and the second end of the guide rail is connected to the second end plate. The guide rail gradually rises along the direction from the first end to the second end. The upper end of the connecting arm has a hanging plate, which rests on the guide rail and is slidable relative to the guide rail. When the hanging plate is at the first end of the guide rail, the first end plate blocks the hanging plate. When the hanging plate is at the second end of the guide rail, the second end plate blocks the hanging plate.

[0026] Furthermore, the frame structure is provided with two guide rails, which are arranged at intervals and a guide groove is formed between the two guide rails; the connecting arm passes through the guide groove and the hanging plate rests on the two guide rails.

[0027] The beneficial effects of this utility model are as follows:

[0028] 1. By designing a gap in the first storage state (keeping a gap between the cleaning component and the surface to be cleaned), the pressure on the cleaning component is automatically released in scenarios such as device recharging, mapping, and non-mopping. This solves the problem in existing technologies where the cleaning component is wet and dirty and cannot be lifted when the robot is cleaning on the carpet, which would wet and contaminate the carpet.

[0029] 2. The drive mechanism is connected to the main structure for transmission, and is used to drive the main structure to translate along the length of the cleaning component mounting slot, thereby causing the cleaning component to extend out of the cleaning component mounting slot to clean dead corners (second cleaning state). The drive mechanism can drive the cleaning component to remain in the cleaning component mounting slot (first cleaning state) as needed to achieve normal cleaning, or it can drive the cleaning component to extend out of the cleaning component mounting slot as needed to clean dead corners, thus meeting various cleaning needs of users. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the device in its first storage state.

[0031] Figure 2 This is a schematic diagram of the shell structure.

[0032] Figure 3 This is a schematic diagram of the shell structure from another perspective.

[0033] Figure 4 This is a schematic diagram showing the cleaning module and drive mechanism working together when the device is in its first storage state.

[0034] Figure 5 This is a schematic diagram of the cleaning module and the drive mechanism working together when the device is in its first storage state.

[0035] Figure 6 This is a schematic cross-sectional view of the cleaning module and drive mechanism when the device is in its first storage state.

[0036] Figure 7 This is a structural diagram of the joint.

[0037] Figure 8 This is a schematic diagram of the device of this utility model in its first clean state.

[0038] Figure 9 This is a schematic diagram of the device of this utility model in its second clean state.

[0039] Figure 10 This is a structural schematic diagram of the device of this utility model in the second clean state from another perspective.

[0040] Explanation of icon numbers:

[0041] 1. Housing; 11. Cleaning component mounting slot; 12. Guide groove; 121. Guide limiting hole; 2. Cleaning module; 21. Main structure; 22. Cleaning roller; 23. Connecting arm; 231. Hanging plate; 3. Drive mechanism; 31. Drive motor; 32. Transmission screw; 33. Transmission nut; 34. Joint; 35. Transmission guide rod; 36. Sliding block; 37. Gearbox assembly; 341. Frame structure; 342. Guide rail; 343. Guide groove; 344. Detection plate; 3441. First detection switch; 3442. Second detection switch; 3443. Third detection switch; 3411. First end plate; 3412. Second end plate; 3421. First end; 3422. Second end. Detailed Implementation

[0042] Please see Figure 1-10 As shown, an embodiment of the present invention provides an automatic lifting and expansion device for a cleaning component, including a housing 1 having a cleaning component mounting groove 11, a cleaning module 2 assembled in the cleaning component mounting groove 11, and a drive mechanism 3 connected between the housing 1 and the cleaning module 2.

[0043] The cleaning module 2 includes a main structure 21 and a cleaning component connected to the main structure 21. A drive mechanism 3 is connected to the main structure 21 and is capable of driving the main structure 21 to translate along the length of the cleaning component mounting groove 11 and to move up and down along the height of the cleaning component mounting groove 11. The cleaning module 2 has a first storage state, a first cleaning state, and a second cleaning state. When the cleaning module 2 is in the first storage state, the cleaning roller 22 is located inside the cleaning component mounting groove 11 and maintains a gap on the surface to be cleaned.

[0044] When the cleaning module 2 is in the first cleaning state, the cleaning roller 22 is inside the cleaning component mounting groove 11 and moves downward along the height direction of the cleaning component mounting groove 11 and contacts the surface to be cleaned; when the cleaning module 2 is in the second cleaning state, one end of the cleaning roller 22 extends out of the outside of the cleaning component mounting groove 11 and contacts the surface to be cleaned.

[0045] The automatic lifting and expansion device of the cleaning component provided by this utility model is used in a sweeping robot and is a component of the sweeping robot.

[0046] The automatic lifting and expansion device for the cleaning component provided by this utility model includes a housing 1, a cleaning module 2, and a drive mechanism 3. The housing 1 can be integrated with the body of the sweeping robot or it can be a separate housing 1 body from the sweeping robot. The bottom of the housing 1 has a cleaning component mounting groove 11, the length direction of which is the width direction of the sweeping robot. If the forward direction of the sweeping robot is defined as longitudinal, then the width direction of the sweeping robot is transverse. At least one end of the cleaning component mounting groove 11 is designed with an opening without a baffle, so that the cleaning module 2 can extend laterally.

[0047] The cleaning module 2 is installed in the cleaning component mounting slot 11, and the cleaning module 2 is clearance-fitted with the slot wall of the cleaning component mounting slot 11, allowing the cleaning module 2 to move laterally relative to the slot wall of the cleaning component mounting slot 11. Specifically, the cleaning module 2 includes a main body structure 21 and cleaning components. The main body structure 21 is the main mounting part of the cleaning module 2, which can be a cover or a cover plate, etc.

[0048] The cleaning component is installed at the bottom of the main structure 21. The cleaning component can be a strip roller, a disc roller, or a roller, etc. In this embodiment, the cleaning component is a cleaning roller 22. The cleaning roller 22 can be detachably connected to the main structure 21, and it only mops the floor as the robot vacuum cleaner operates. The cleaning roller 22 can also be connected to the main structure 21 using a pivoting structure (e.g., a pivot shaft). A roller drive module is provided in the main structure 21 to drive the cleaning roller 22 to roll or rotate, thereby improving the cleaning effect.

[0049] When the robot vacuum is in normal mopping mode (cleaning mode), the cleaning roller 22 is in contact with the surface to be cleaned (wooden board, tile, etc.) and cleans the surface.

[0050] The drive mechanism 3 is connected between the housing 1 and the main structure 21. It is used to drive the main structure 21 to move downward into the first cleaning state. The drive mechanism 3 can further drive the main structure 21 to move laterally, thereby driving the cleaning roller 22 to extend out of or retract back into position from one end of the cleaning component mounting groove 11.

[0051] The drive mechanism 3 can be a motor drive mechanism 3, a cylinder drive mechanism 3, etc. The output end of the drive mechanism 3 is connected to the main body structure 21 to drive the main body structure 21 to move laterally. The drive mechanism 3 can be installed in the cleaning component mounting slot 11 or on the outside of the cleaning component mounting slot 11.

[0052] The cleaning module 2 has a first storage state, a first cleaning state, and a second cleaning state. The first storage state is a non-mopping working state (such as just vacuuming or initial mapping state). The first cleaning state is a common cleaning state or a main cleaning state. The second cleaning state is a corner / dead corner cleaning state or a secondary cleaning state.

[0053] When the user selects the first storage state according to the actual scenario, that is, when there is no need to clean the dead corners of the floor and walls, the drive mechanism 3 is in the initial state or default state, the cleaning roller 22 is in the cleaning component installation slot 11, and the cleaning roller 22 will not move down and extend out of the cleaning component installation slot 11, and will not participate in mopping (but the robot will maintain other modes of operation according to the actual situation, such as only starting the side brush sweeping cleaning state; or returning to the base station for recharging).

[0054] When the user selects to use the first cleaning state according to the actual scenario, that is, when there is no need to clean the dead corners of the floor and walls, the drive mechanism 3 will start and drive the cleaning roller 22 to move down and contact the surface to be cleaned (the surface to be cleaned is the same as described above). The cleaning roller 22 is in the cleaning component mounting slot 11 and will not move out of the cleaning component mounting slot 11. It only cleans the area that the robot vacuum cleaner body passes through.

[0055] When the cleaning module 2 is in the second cleaning state, one end of the cleaning roller 22 extends beyond the outside of the cleaning component mounting slot 11. When the user selects to use the second cleaning state according to the actual scenario, that is, when it is necessary to clean the dead corners of the floor and walls, the drive mechanism 3 receives the instruction from the control module of the robot vacuum cleaner. The drive mechanism 3 begins to drive the main structure 21 to move downward toward the cleaning component mounting slot 11 and simultaneously moves laterally along one end of the slot of the cleaning component mounting slot 11 until it extends beyond a preset length, for example, any length between 5cm and 15cm. At this time, one end of the cleaning roller 22 also extends beyond the cleaning component mounting slot 11 by a preset length, thereby cleaning the dead corners between the floor and walls.

[0056] After cleaning the hard-to-reach areas, the user can choose to return to the first cleaning state or the first storage state. The drive mechanism 3 will drive the cleaning module 2 to reset and store the cleaning module 2 in the cleaning component installation slot 11 (based on the current cleaning mode, the user can choose to be in the first cleaning state or the first storage state). Alternatively, the control module of the robot vacuum cleaner can automatically control the drive mechanism 3 to send a command to the drive mechanism 3, which will drive the cleaning module 2 to reset and store the cleaning module 2 in the cleaning component installation slot 11.

[0057] In summary, the automatic lifting and expansion device for the cleaning component provided by this utility model includes a housing 1, a cleaning module 2, and a drive mechanism 3. The cleaning module is gap-fitted into the cleaning component mounting slot 11. The cleaning module 2 includes a main structure 21 and a cleaning roller 22. The drive mechanism 3 is connected to the main structure 21 and is used to drive the main structure 21 to translate along the length of the cleaning component mounting slot 11, thereby driving the cleaning roller 22 to extend out of the cleaning component mounting slot 11 to clean hard-to-reach areas. The drive mechanism 3 can drive the cleaning roller 22 to remain in the cleaning component mounting slot 11 as needed for normal cleaning, or it can drive the cleaning roller 22 to extend out of the cleaning component mounting slot 11 as needed to clean hard-to-reach areas, meeting various cleaning needs of users. When the robot vacuum returns to its original position, the cleaning roller 22 is stored in the cleaning component mounting slot 11, which is not visible to the user and does not occupy extra space, improving product performance and user experience.

[0058] In one embodiment, the drive mechanism 3 includes a drive motor 31, a transmission screw 32 connected to the shaft of the drive motor 31, and a transmission nut 33 fitted with the transmission screw 32; the drive motor 31 is connected to the housing 1, and the transmission screw 32 is arranged along the length direction of the cleaning component mounting groove 11; the main structure 21 is provided with a connecting arm 23, and the transmission nut 33 is provided with a connecting portion 34 for cooperating with the connecting arm 23, the connecting arm 23 cooperates with the connecting portion 34 and can be driven by the connecting portion 34 to move horizontally and vertically.

[0059] In this embodiment, the drive mechanism 3 is a motor drive mechanism 3, which includes a drive motor 31, a transmission screw 32, and a transmission nut 33 fitted with the transmission screw 32. The drive motor 31 is fixedly mounted on the housing 1 by a connection structure (including but not limited to screw fixing, snap fixing, ultrasonic welding, etc.). At the same time, a gearbox assembly 37 connected to the shaft of the drive motor 31 is also provided on one side of the drive motor 31. The gearbox assembly 37 may include a number of gears to form a reduction gearbox with a speed reduction effect; or it may be a constant speed gearbox to form a constant speed effect.

[0060] The transmission screw 32 is installed at the output end of the gearbox assembly 37. The transmission screw 32 is arranged laterally and extends along the length of the cleaning component mounting groove 11. At the same time, a conventional nut is screwed onto the transmission screw 32, and the conventional nut is connected to the corresponding connecting part 34, driving the entire connecting part 34 to slide along the length of the cleaning component mounting groove 11.

[0061] The main structure 21 has a connecting arm 23 at its top, and the transmission nut 33 is fitted with a connecting part 34 for engaging with the connecting arm 23. The connecting part 34 can be a connecting buckle, a connecting sleeve, a connecting frame, a connecting hole, etc. The upper end of the connecting arm 23 is connected to the connecting part 34. When the transmission rack moves horizontally, the connecting part 34 will drive the connecting arm 23 to move horizontally and vertically.

[0062] In one embodiment, such as Figure 4-6 As shown, one end of the main structure 21 is provided with a connecting arm 23, and the other end is provided with two connecting arms 23. The two connecting arms 23 at the other end are symmetrically arranged on both sides of the transmission screw 32. The corresponding connecting part 34 includes a guide rail 342 connected to the frame structure 341 and provided in the frame structure 341 for driving the connecting arms 23 to rise and fall.

[0063] In another embodiment, the surface of the housing 1 is provided with a guide groove 12 extending along the length direction of the cleaning component mounting groove 11, and the bottom plate of the guide groove 12 is provided with a guide limiting hole 121 extending along the length direction of the cleaning component mounting groove 11; the connecting arm 23 passes through the guide limiting hole 121 and cooperates with the connecting part 34.

[0064] To limit the lateral movement of the cleaning module 2, a guide limiting hole 121 is provided on the bottom plate of the guide groove 12, extending along the length of the cleaning component mounting groove 11. During assembly, the connecting arm 23 passes through the guide limiting hole 121 and engages with the joint 34. Taking extension to the right as an example: when the connecting arm 23 is driven to move to the right, the cleaning roller 22 is driven to extend to the right. When the connecting arm 23 contacts the right wall of the guide limiting hole 121 and can no longer move to the right, it indicates that the cleaning roller 22 has extended to its maximum length to the right. When the cleaning roller 22 is driven to return to its original position to the left, when the connecting arm 23 contacts the left wall of the guide limiting hole 121 and can no longer move to the left, it indicates that the cleaning roller 22 has retracted to its limit position and is completely within the cleaning component mounting groove 11.

[0065] In one embodiment, such as Figure 1 As shown, when the cleaning module 2 is in its initial state, the cleaning roller 22 is in a raised state (first storage state) in the cleaning component mounting slot 11. When the cleaning module 2 is in the first cleaning state, the cleaning roller 22 is in a lowered state in the cleaning component mounting slot 11.

[0066] In this embodiment, the drive mechanism 3 can drive the cleaning module 2 to move horizontally or to move the cleaning module 2 vertically, in order to meet the needs of different application scenarios.

[0067] For example, when the robot vacuum is in its initial state (default state, charging state, self-cleaning state, mapping state, recharging state, etc.), the drive mechanism 3 is in its initial state, causing the cleaning module 2 to rise in the cleaning component mounting slot 11, and the cleaning roller 22 to be raised off the ground, preventing it from contacting the floor. When the robot vacuum is in vacuuming mode, the drive mechanism 3 is in its initial state, causing the cleaning module 2 to rise in the cleaning component mounting slot 11, and the cleaning roller 22 to be raised off the ground, avoiding wetting the floor and affecting vacuuming.

[0068] See Figure 8 When the robot vacuum is mopping (first cleaning state), and the cleaning module 2 is in the first cleaning state, the drive mechanism 3 drives the cleaning module 2 to descend, causing the cleaning roller 22 to be in a descending, grounded state. (See also...) Figure 9-10 When the robot vacuum is mopping (second cleaning state), the cleaning module 2 is in the second cleaning state. The drive mechanism 3 drives the lowered cleaning module 2 to move laterally, so that one end of the cleaning roller 22 extends out of the outside of the cleaning component mounting groove 11. When the robot vacuum returns to the initial state, the drive mechanism 3 drives the cleaning module 2 to reset, including rising off the ground for reset and / or moving laterally to retract for reset.

[0069] Furthermore, in one embodiment, a detection plate 344 is also provided on the frame structure 341. A first detection switch 3441, a second detection switch 3442, and a third detection switch 3443 are sequentially arranged on the surface of the housing 1 along the length direction of the cleaning component mounting groove 11. When the cleaning module 2 is in the first retracted state, the detection plate 344 triggers the first detection switch 3441; when the cleaning module 2 is in the first cleaning state, the detection plate 344 triggers the second detection switch 3442; and when the cleaning module 2 is in the second cleaning state, the detection plate 344 triggers the third detection switch 3443. The corresponding first detection switch 3441 can be a photoelectric switch, a micro switch, or a push-button switch, etc.

[0070] That is, by setting a detection plate 344 on the frame structure 341 and cooperating with the corresponding detection switch, the working state of the corresponding cleaning module 2 can be detected; that is, it can be conveniently matched with the control system to control the sweeping robot for subsequent task instructions, and can also be used as a limit switch.

[0071] For example, when the robot vacuum is in its first storage state (default state, charging state, self-cleaning state, mapping state, recharging state, etc.), the drive mechanism 3 is in its initial state, causing the cleaning module 2 to rise in the cleaning component mounting slot 11, and the cleaning roller 22 to be raised off the ground, preventing it from contacting the floor. Simultaneously, the testing detection plate 344 is located between the photoelectric receiver and photoelectric output of the first detection switch 3441 (in this embodiment, a photoelectric switch is used), causing the first detection switch 3441 to output a corresponding signal to the control system, informing the robot vacuum that it is currently in its first storage state. When the robot vacuum is in vacuuming mode, the drive mechanism 3 is in its initial state, causing the cleaning module 2 to rise in the cleaning component mounting slot 11, and the cleaning roller 22 to be raised off the ground, preventing the floor from getting wet and affecting vacuuming.

[0072] When the robot vacuum is mopping (first cleaning state), the cleaning module 2 is in the first cleaning state. The drive mechanism 3 drives the cleaning module 2 to descend, so that the cleaning roller 22 is in the descending ground state. At the same time, the detection plate 344 is synchronously moved to the second detection switch 3442. That is, at this time, the detection plate 344 no longer blocks the first detection switch 3441, but blocks the photoelectric receiver and photoelectric output of the second detection switch 3442. This makes the robot vacuum aware that it is currently in the first cleaning state.

[0073] When the robot vacuum is mopping (second cleaning state), the cleaning module 2 is in the second cleaning state. The drive mechanism 3 drives the lowered cleaning module 2 to move laterally, so that one end of the cleaning roller 22 extends out of the outside of the cleaning component mounting slot 11. At the same time, the detection plate 344 is moved laterally to the third detection switch 3443. That is, at this time, the detection plate 344 no longer blocks the second detection switch 3442, but blocks the photoelectric receiver and photoelectric output of the third detection switch 3443, so that the robot vacuum knows that it is currently in the second cleaning state.

[0074] When the robot vacuum returns to its initial state, the drive mechanism 3 drives the cleaning module 2 to reset, including rising off the ground for reset and / or moving laterally to retract for reset.

[0075] Specifically, the structure that drives the cleaning module 2 to move horizontally and vertically is integrated in the joint 34. The joint 34 includes a frame structure 341 and a guide rail 342.

[0076] The frame structure 341 is connected to the transmission nut 33 via a sliding block 36. Specifically, the sliding block 36 has a nut slot in the middle for the transmission nut 33. The transmission nut 33 moves along the direction of the transmission screw 32, simultaneously driving the sliding block 36 to move along the direction of the transmission screw 32. The sliding block 36 is also connected to the frame structure 341, thus simultaneously driving the frame structure 341 to move. Additionally, the drive mechanism 3 includes transmission guide rods 35 mounted in the frame and located on both sides of the transmission screw 32. One end of the transmission guide rod 35 passes through the sliding block 36 and connects to the housing 1, while the other end is mounted on the other side of the housing 1. The function of the transmission guide rod 35 is to guide the sliding block 36 to move along the correct path.

[0077] Furthermore, it should be specifically noted that, in the embodiment, since there is a gap between the nut groove and both ends of the transmission nut 33, the transmission screw 32 drives the transmission nut 33, and then the transmission nut 33 pushes the side wall of the nut groove of the sliding block 36 to push the frame structure 341. Moreover, the purpose of this design is that when the control system fails and the motor runs idle and cannot stop, when the sliding block 36 reaches a limit position, the transmission screw 32 and the transmission nut 33 will rotate synchronously. At this time, one side of the transmission nut 33 will rub against the side wall of the sliding block 36 (generally, this only causes a small amount of wear on the side wall of the sliding block 36 and will not affect normal use; otherwise, if the sliding block 36 and the nut groove are not designed, and a hard connection is directly used between the nut and the frame structure 341, when the control system fails and the motor cannot stop, the frame structure 341 will be damaged or the drive motor 31 will burn out).

[0078] Furthermore, the guide rail 342 is located within the frame structure 341 and can drive the connecting arm 23 to rise and fall. Specifically, the guide rail 342 can be a convex rail with one end higher than the other, or a guide rail 342 groove with one end higher than the other. The connecting arm 23 is slidably connected to the convex rail or the guide rail 342 groove. When the connecting arm 23 slides from the lower end to the higher end of the guide rail 342, the connecting arm 23 drives the entire cleaning module 2 to rise. When the connecting arm 23 slides from the higher end to the lower end of the guide rail 342, the connecting arm 23 drives the entire cleaning module 2 to fall.

[0079] Meanwhile, when the connecting arm 23 is at the lower end of the guide rail 342, one side end plate of the frame structure 341 blocks the connecting arm 23 and can push the connecting arm 23 to move horizontally toward one side of the cleaning component mounting groove 11, thereby driving the cleaning module 2 to move outward laterally as a whole, so that the cleaning roller 22 extends out of the cleaning component mounting groove 11 in the descending state to clean the dead corners between the floor and the wall.

[0080] When the connecting arm 23 is at the higher end of the guide rail 342, the other end plate of the frame structure 341 blocks the connecting arm 23 and can push the connecting arm 23 to move horizontally toward the middle of the cleaning component mounting slot 11, thereby driving the cleaning module 2 to move inward horizontally as a whole, so that the cleaning roller 22 returns to the cleaning component mounting slot 11 in the rising state and resets to the initial state.

[0081] In one embodiment, such as Figure 7 As shown, the frame structure 341 includes a first end plate 3411 and a second end plate 3412 arranged at intervals along the length direction of the cleaning component mounting groove 11. The first end 3421 of the guide rail 342 is connected to the first end plate 3411, and the second end 3422 of the guide rail 342 is connected to the second end plate 3412. The guide rail 342 gradually rises along the direction from the first end 3421 to the second end 3422.

[0082] The upper end of the connecting arm 23 has a mounting plate 231, which rests on the guide rail 342 and can slide relative to the guide rail 342. When the mounting plate 231 is at the first end 3421 of the guide rail 342, the first end plate 3411 blocks the mounting plate 231. When the mounting plate 231 is at the second end 3422 of the guide rail 342, the second end plate 3412 blocks the mounting plate 231.

[0083] Specifically, the guide rail 342 includes a lower first end 3421 and a higher second end 3422. The first end 3421 is connected to a first end plate 3411, and the second end 3422 is connected to a second end plate 3412. The first end 3421 and the second end 3422 may be a flat plate, and the main body of the guide rail 342 connected to the first end 3421 and the second end 3422 may be a sloping plate.

[0084] The upper end of the connecting arm 23 has a hanging plate 231, which is connected to the connecting arm 23 in an inverted L-shape or T-shape. The hanging plate 231 rests on the guide rail 342 and can slide on the guide rail 342. When the hanging plate 231 is at the first end 3421 of the guide rail 342, the first end plate 3411 blocks the hanging plate 231, which can push the hanging plate 231 to move laterally, so as to ultimately drive the cleaning roller 22 to extend. When the hanging plate 231 is at the second end 3422 of the guide rail 342, the second end plate 3412 blocks the hanging plate 231, which can push the hanging plate 231 to move laterally in the opposite direction, so as to drive the cleaning roller 22 to retract.

[0085] When the cleaning module 2 is in its initial state, the cleaning roller 22 is raised off the ground and stored in the cleaning component mounting slot 11. At this time, the hanging plate 231 is on the second end 3422 of the guide rail 342.

[0086] When the drive mechanism 3 drives the cleaning module 2 to descend, the frame structure 341 is driven to translate, and the guide rail 342 moves as a whole until the hanging plate 231 lands on the first end 3421 of the guide rail 342. At this time, the cleaning module 2 is in a descending state, and the cleaning roller 22 is in the cleaning component mounting slot 11 and is in a descending grounded state. When it is necessary to reset the cleaning module 2 in the above state, the drive motor 31 rotates in the reverse direction, and the guide rail 342 moves as a whole until the hanging plate 231 lands on the second end 3422 of the guide rail 342, completing the rising and resetting process.

[0087] When the drive mechanism 3 continues to drive the frame structure 341 to move, the first end plate 3411 will block the hanging plate 231 and push the hanging plate 231 to move laterally to the near end. The connecting arm 23, the main structure 21, and the cleaning roller 22 will move laterally as a whole, eventually causing the cleaning roller 22 to extend. When it is necessary to reset the cleaning module 2 in the above state, the drive motor 31 will rotate in the opposite direction, and the guide rail 342 will move as a whole until the hanging plate 231 falls on the second end 3422 of the guide rail 342, completing the upward reset. At this time, the second end plate 3412 will block the hanging plate 231, and the drive motor 31 will continue to rotate in the opposite direction. The second end plate 3412 will block the hanging plate 231 and push the hanging plate 231 to move laterally. The connecting arm 23, the main structure 21, and the cleaning roller 22 will move laterally as a whole, eventually causing the end of the cleaning roller 22 to retract into the cleaning component mounting slot 11, completing the retraction and translation reset.

[0088] In one embodiment, such as Figure 7 As shown, the frame structure 341 has two guide rails 342, which are arranged at intervals, and a guide groove 343 is formed between the two guide rails 342. The connecting arm 23 passes through the guide groove 343, and the hanging plate 231 rests on the two guide rails 342. In this embodiment, the guide groove 343 is formed between the two guide rails 342. The hanging plate 231 and the connecting arm 23 are connected in a T-shape, and the connecting arm 23 passes through the guide groove 343, which can guide the movement of the connecting arm 23. The hanging plate 231 rests on the two guide rails 342, which improves the stability of the sliding of the hanging plate 231 relative to the guide rails 342.

[0089] The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. An automatic lifting and expansion device for a cleaning component, characterized in that, It includes a housing with a cleaning component mounting slot, a cleaning module assembled in the cleaning component mounting slot, and a drive mechanism connected between the housing and the cleaning module; The cleaning module includes a main structure and a cleaning component connected to the main structure. The driving mechanism is connected to the main structure and can drive the main structure to move up and down along the vertical direction of the cleaning component mounting groove and to translate along the length direction of the cleaning component mounting groove. The cleaning module has a first storage state, a first cleaning state, and a second cleaning state; When the cleaning module is in the first storage state, the cleaning component is located inside the cleaning part mounting slot and a gap is maintained on the surface to be cleaned; When the cleaning module is in the first cleaning state, the cleaning component is located inside the cleaning component mounting slot and moves downward along the height direction of the cleaning component mounting slot and contacts the surface to be cleaned. When the cleaning module is in the second cleaning state, one end of the cleaning component extends out of the outside of the cleaning component mounting groove and contacts the surface to be cleaned.

2. The automatic lifting and expansion device for a cleaning component according to claim 1, characterized in that: The driving mechanism includes a drive motor, a transmission screw connected to the shaft of the drive motor, and a transmission nut fitted with the transmission screw; the drive motor is connected to the housing, and the transmission screw is arranged along the length direction of the cleaning component mounting groove; the main structure is provided with a connecting arm, and the transmission nut is provided with a connecting part for cooperating with the connecting arm, the connecting arm cooperating with the connecting part and being driven by the connecting part to move horizontally and vertically.

3. The automatic lifting and expansion device for a cleaning component according to claim 2, characterized in that: The surface of the housing is provided with a guide groove extending along the length direction of the cleaning component mounting groove, and the bottom plate of the guide groove is provided with a guide limiting hole extending along the length direction of the cleaning component mounting groove; the connecting arm passes through the guide limiting hole and mates with the joint.

4. The automatic lifting and expansion device for a cleaning component according to claim 3, characterized in that: The connecting part includes a frame structure connected to the transmission nut and a guide rail disposed in the frame structure for driving the connecting arm to rise and fall; the connecting arm is slidably connected to the guide rail, and when the connecting arm is at the end of the guide rail, the end plate of the frame structure blocks the connecting arm and can drive the connecting arm to translate. When the cleaning module is in the first storage state, the cleaning component is in the raised state in the cleaning component mounting slot; When the cleaning module is in the first cleaning state, the cleaning component is in the cleaning part mounting slot and is in a lowered state; When the cleaning module is in the second cleaning state, one end of the cleaning component extends out of the outside of the cleaning component mounting groove and is in a lowered state.

5. The automatic lifting and expansion device for a cleaning component according to claim 4, characterized in that: The main structure has at least one connecting arm at one end and at least one connecting arm at the other end, which is located on one side of the transmission screw; the frame structure has at least one guide rail at one end and a guide rail aligned with the connecting arm at the other end.

6. The automatic lifting and expansion device for a cleaning component according to claim 4, characterized in that: The joint also includes sliding blocks sleeved on both sides of the transmission nut and connected to the frame structure. The sliding block has a nut groove in the middle for placing the transmission nut. The transmission nut moves along the direction of the transmission screw and simultaneously drives the sliding block to move along the direction of the transmission screw.

7. The automatic lifting and expansion device for a cleaning component according to claim 4, characterized in that: The frame structure is also equipped with detection plates, and the surface of the housing is sequentially equipped with a first detection switch, a second detection switch, and a third detection switch along the length of the cleaning component mounting groove. When the cleaning module is in the first storage state, the detection plate triggers the first detection switch; When the cleaning module is in the first cleaning state, the detection plate triggers the second detection switch; When the cleaning module is in the second cleaning state, the detection plate triggers the third detection switch.

8. The automatic lifting and expansion device for a cleaning component according to claim 4, characterized in that: The drive mechanism also includes transmission guide rods mounted in the frame and located on both sides of the transmission screw. One end of the transmission guide rod passes through the sliding block and is connected to the housing, and the other end is mounted on the other side of the housing.

9. The automatic lifting and expansion device for a cleaning component according to claim 8, characterized in that: The frame structure includes a first end plate and a second end plate spaced apart along the length of the cleaning component mounting slot. A first end of the guide rail is connected to the first end plate, and a second end of the guide rail is connected to the second end plate. The guide rail gradually rises along the direction from the first end to the second end. The upper end of the connecting arm has a hanging plate that rests on the guide rail and is slidable relative to the guide rail. When the hanging plate is at the first end of the guide rail, the first end plate blocks the hanging plate. When the hanging plate is at the second end of the guide rail, the second end plate blocks the hanging plate.

10. The automatic lifting and expansion device for a cleaning component according to claim 9, characterized in that: The frame structure is provided with two guide rails, which are arranged at intervals and a guide groove is formed between the two guide rails; the connecting arm passes through the guide groove and the hanging plate rests on the two guide rails.

Images