Mop lifting and cleaning linkage device of sweeper

Abstract

The utility model belongs to the technical field of sweepers, and particularly discloses a mop lifting and cleaning linkage device of a sweeper, which comprises a shell component, a support component is arranged below the shell component, a mop is connected onto the support component, a lifting part is rotatably connected in the shell component, one end of the lifting part is in threaded connection and sleeved with a thread sleeve, and the other end of the lifting part is sleeved with a mop. The threaded sleeve is located in the shell assembly and connected with the shell assembly in a one-way rotating mode, so that the threaded sleeve rotates along with the lifting piece when the lifting piece rotates forwards and descends, rotation of the threaded sleeve is blocked when the lifting piece rotates backwards and ascends, and the other end of the lifting piece is connected with the support assembly. The lifting part is in threaded connection with the threaded sleeve, the threaded sleeve is in one-way rotating connection with the shell assembly, lifting action and cleaning action are linked, the mop can be controlled to descend and rotate to clean the ground only by controlling the lifting part to rotate forwards to descend and drive the threaded sleeve to rotate, and after cleaning is completed, the lifting part is controlled to rotate reversely to ascend, and rotation of the threaded sleeve is blocked. Therefore, the mop can be controlled to be lifted and cleaned in a dirt-avoiding manner, and the purposes of reducing the cost and reducing the size are achieved.

Description

Technical Field

[0001] This utility model belongs to the field of sweeping machine technology, and in particular relates to a sweeping machine mop lifting and cleaning linkage device. Background Technology

[0002] As smart home cleaning scenarios become increasingly diversified, users' demands for the mopping function of robot vacuums are no longer limited to a single cleaning effect, but are gradually shifting towards the dual goals of "efficient cleaning + intelligent stain avoidance". However, current technology faces a difficult-to-balance contradiction in practical applications, which is mainly reflected in the conflict between the demand for cleaning effect and the needs for stain avoidance and reconnection to the base station.

[0003] From a cleaning performance perspective, to effectively remove stubborn stains such as coffee stains and oil stains, the mop needs to maintain continuous and close contact with the floor and apply a certain amount of pressure, typically between 150-300 g / cm². 2 At the same time, the mop needs to maintain a stable rotational motion, with the rotation speed generally set at 100-300 revolutions per minute. Only through the synergistic effect of continuous pressure and rotation can the ideal cleaning effect be achieved.

[0004] However, while pursuing efficient cleaning, robotic vacuum cleaners also face the need to avoid dirt and return to their base station. As the mop becomes dirty during cleaning, the robot needs to return to the base station for washing. If the mop is still in its lowered position during this process, the dirty mop will inevitably continue to come into contact with the already cleaned floor, causing secondary pollution. For example, if the mop isn't raised promptly after cleaning the kitchen before returning to the base station, it may drag kitchen grease into the living room or bedroom, severely impacting the overall cleaning effect.

[0005] Currently, most robotic vacuum cleaners on the market use a dual-motor independent drive system to achieve the two key functions of cleaning and stain avoidance. Specifically, the two motors are driven by different mechanisms, one responsible for the rotation of the mop and the other for lifting it. However, while this design meets the functional requirements, it also leads to high cost and large size. The high cost limits the market penetration of the product, while the large size affects the flexibility and applicability of the robotic vacuum cleaner in confined spaces.

[0006] Therefore, the inventors dedicated themselves to designing a mop lifting and cleaning device to solve the above problems. Utility Model Content

[0007] The purpose of this utility model is to provide a mop lifting and cleaning linkage device for a sweeper, which can not only realize the rotation cleaning action of the mop and the lifting action of the mop, but also reduce costs and reduce size.

[0008] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0009] A mop lifting and cleaning linkage device for a sweeping machine includes a housing assembly, a support assembly below the housing assembly, a mop connected to the support assembly, a lifting component rotatably connected inside the housing assembly, one end of the lifting component being threaded and fitted with a screw sleeve, the screw sleeve being located inside the housing assembly and rotatably connected to the housing assembly in one direction, such that when the lifting component rotates forward and descends, the screw sleeve rotates accordingly, and when it rotates backward and rises, the rotation of the screw sleeve is obstructed, the other end of the lifting component being connected to the support assembly.

[0010] As an improvement to the mop lifting and cleaning linkage device of the sweeper of this utility model, the sleeve is provided with a one-way bearing, and the sleeve is rotatably connected to the housing assembly through the one-way bearing.

[0011] As an improvement of the mop lifting and cleaning linkage device of the sweeper of this utility model, the lifting component includes a lifting rod and a toothed sleeve. The toothed sleeve is located inside the screw sleeve and is fixedly sleeved on the end of the lifting rod away from the mop. The external thread of the toothed sleeve is screwed to the internal thread of the screw sleeve.

[0012] As an improvement of the mop lifting and cleaning linkage device of the sweeper of this utility model, the guide bearing, the screw sleeve and the toothed sleeve are all located in the connecting groove at the top of the housing assembly, and the connecting part of the bracket assembly is vertically slidably arranged in the lifting slide groove at the bottom of the housing assembly. The lifting slide groove is coaxial with and connected to the connecting groove.

[0013] As an improvement to the mop lifting and cleaning linkage device of the sweeper of this utility model, the lifting rod is provided with an oil-impregnated copper sleeve, and the lifting rod is rotatably connected to the housing assembly through the oil-impregnated copper sleeve. The oil-impregnated copper sleeve is located between the connecting groove and the lifting slide groove.

[0014] As an improvement to the mop lifting and cleaning linkage device of the sweeper of this utility model, a drive source is fixed on the housing assembly, and a gear set is provided inside the housing assembly. The drive source drives the lifting component to rotate through the gear set.

[0015] As an improvement to the mop lifting and cleaning linkage device of the sweeper of this utility model, the end of the lifting component near the mop extends into the connecting part of the bracket assembly and is elastically limited and connected to the bracket assembly along the axial direction of the bracket assembly.

[0016] As an improvement of the mop lifting and cleaning linkage device of the sweeper of this utility model, a buffer cavity is provided in the connecting part of the bracket assembly, and a buffer member is elastically connected in the buffer cavity. The pushing part at the bottom of the lifting member is located in the buffer cavity and elastically presses against the buffer member.

[0017] As an improvement to the mop lifting and cleaning linkage device of the sweeper of this utility model, a magnet is magnetically connected inside the buffer, and the magnet is elastically connected to the bracket assembly through a spring, and the pushing part presses against the top surface of the buffer.

[0018] As an improvement of the mop lifting and cleaning linkage device of the sweeper of this utility model, the locking platform on the outer wall of the buffer component is limited and locked with the limiting locking hole on the inner wall of the buffer cavity. The bracket assembly includes a bracket body and a sliding sleeve. The middle part of the bracket body extends vertically to one side of the screw sleeve to form a connecting sleeve. The sliding sleeve is sleeved on the connecting sleeve and constitutes the connecting part of the bracket assembly.

[0019] Compared with the prior art, the mop lifting and cleaning linkage device of this utility model utilizes the threaded connection between the lifting component and the screw sleeve, and the screw sleeve is unidirectionally rotatably connected to the housing assembly, linking the lifting action with the cleaning action. By simply controlling the lifting component to rotate forward and descend, driving the screw sleeve to rotate, the support assembly and the fixed mop can be controlled to descend and rotate together to clean the floor. After cleaning, the lifting component can be controlled to rotate in reverse and rise. The rotation of the screw sleeve is blocked, which can control the support assembly and the fixed mop to rise and avoid dirt cleaning, thus achieving the purpose of reducing costs and shrinking size. Attached image description:

[0020] Figure 1 This is a three-dimensional enlarged view of the mop lifting and cleaning linkage device of the sweeper of this utility model, showing the mop in a raised state.

[0021] Figure 2 This is an enlarged cross-sectional view of the mop lifting and cleaning linkage device of the sweeper of this utility model, showing the mop in a raised state.

[0022] Figure 3 yes Figure 2 Enlarged view of point A in the middle;

[0023] Figure 4 yes Figure 2 Enlarged view of point B in the middle;

[0024] Figure 5 This is a three-dimensional exploded view of the mop lifting and cleaning linkage device of the sweeper of this utility model;

[0025] Figure 6 This is another exploded perspective view of the mop lifting and cleaning linkage device of the sweeper of this utility model;

[0026] Figure 7 This is a three-dimensional enlarged view of the gear set and lifting rod of this utility model;

[0027] Figure 8 This is a partially exploded and enlarged perspective view of the mop lifting and cleaning linkage device of the sweeper of this utility model.

[0028] Figure 9 This is a three-dimensional enlarged view of the bracket body and buffer component of this utility model.

[0029] Figure 10 This is a three-dimensional exploded and enlarged view of the bracket body, buffer component, magnet, and spring of this utility model;

[0030] Figure 11 This is a three-dimensional enlarged view of the mop in the descending state in the mop lifting and cleaning linkage device of the sweeper of this utility model.

[0031] Figure 12 This is an enlarged cross-sectional view of the mop lifting and cleaning linkage device of the sweeper of this utility model, showing the mop in a descending state.

[0032] Illustration:

[0033] 1. Housing assembly; 11. Upper shell; 111. Ball bearing; 112. Connecting groove; 12. Lower shell; 121. Lifting slide; 2. Lifting component; 21. Gear sleeve; 22. Lifting rod; 221. Pushing part; 3. Screw sleeve; 31. One-way bearing; 32. Oil-impregnated copper sleeve; 4. Sliding sleeve; 41. Bracket assembly; 42. Buffer cavity; 5. Bracket body; 51. Connecting sleeve; 511. Limiting hole; 6. Buffer component; 61. Locking platform; 62. Magnet; 63. Spring; 4. Sliding sleeve; 41. Bracket assembly; 5. Bracket body; 51. Connecting sleeve; 511. Limiting hole; 61. Locking platform; 62. Magnet; 63. Spring; 7. Mop; 8. Motor; 81. Driving gear; 82. Driven gear; 83. First double gear; 84. Second double gear; 85. Third double gear; 86. Intermediate gear. Detailed Implementation

[0034] The embodiments of this utility model are described in detail below with reference to the accompanying drawings. The drawings are for reference and illustration only and do not constitute a limitation on the scope of patent protection of this utility model.

[0035] Reference Figures 1 to 12A mop lifting and cleaning linkage device for a sweeping machine includes a housing assembly 1, a screw sleeve 3, a lifting component 2, a bracket assembly 41, and a mop 7. The bracket assembly 41 is located below the housing assembly 1, and the mop 7 is located on the bracket assembly 41. The lifting component 2 is rotatably mounted inside the housing assembly 1. The screw sleeve 3 is sleeved on one end of the lifting component 2 and threadedly connected to the lifting component 2. The screw sleeve 3 is located inside the housing assembly 1 and is unidirectionally rotatably connected to the housing assembly 1, so that when the lifting component 2 rotates forward and descends, the screw sleeve 3 rotates accordingly, and when it rotates backward and rises, the rotation of the screw sleeve 3 is obstructed. The other end of the lifting component 2 is connected to the bracket assembly 41.

[0036] Reference Figure 1 , Figure 2 , Figure 5 and Figure 6 The housing assembly 1 includes an upper shell 11 and a lower shell 12. The top of the upper shell 11 is provided with a connecting groove 112. A ball bearing 111 is rotatably connected in the groove at the top of the upper shell 11. The bottom of the upper shell 11 is open. The bottom of the lower shell 12 is provided with a lifting slide 121. The lower shell 12 covers the bottom of the upper shell 11 to form a control cavity. The control cavity is located between the connecting groove 112 and the lifting slide 121. The connecting groove 112 and the lifting slide 121 are coaxially arranged and communicate with each other through the control cavity.

[0037] Reference Figure 2 , Figure 3 , Figure 5 , Figure 6 and Figure 8 The screw sleeve 3 is cylindrical with internal threads on its inner wall. A one-way bearing 31 is fitted over the screw sleeve 3, and the screw sleeve 3 is unidirectionally rotatably connected to the upper shell 11 through the one-way bearing 31. The lifting component 2 includes a lifting rod 22 and a toothed sleeve 21. The upper end of the lifting rod 22 is quadrilateral, and the bottom of the lifting rod 22 has a circular pushing part 221 forming a T-shape. The toothed sleeve 21 is annular with external threads on its outer wall. The toothed sleeve 21 is located inside the screw sleeve 3 and is fixedly fitted onto the end of the lifting rod 22 away from the mop 7 (i.e., the end of the lifting rod 22). At the top, the external thread of the toothed sleeve 21 is screwed into the internal thread of the threaded sleeve 3. The one-way bearing 31, the threaded sleeve 3, and the toothed sleeve 21 are all located in the connecting groove 112 at the top of the upper shell 11. The lifting rod 22 is vertically arranged. The lifting rod 22, the toothed sleeve 21, the threaded sleeve 3, and the one-way bearing 31 are all coaxially arranged. The lower end of the lifting rod 22 passes through the lower shell 12. An oil-impregnated copper sleeve 32 is fitted over the lifting rod 22. The oil-impregnated copper sleeve 32 is located between the connecting groove 112 and the lifting slide groove 121. The lifting rod 22 is rotatably connected to the lower shell 12 through the oil-impregnated copper sleeve 32.

[0038] Reference Figure 2 , Figure 4 , Figure 5 , Figure 6 , Figure 8 , Figure 9and Figure 10 The lifting rod 22 extends from one end (i.e., the lower end) near the mop 7 into the connecting part of the bracket assembly 41. The lower end of the lifting rod 22 is elastically limited and connected to the bracket assembly 41 along the axial direction of the bracket assembly 41. The connecting part of the bracket assembly 41 is vertically slidably disposed in the lifting groove 121 at the bottom of the lower shell 12. Specifically, the bracket assembly 41 includes a sliding sleeve 4 and a bracket body 5. The lower end of the bracket body 5 is circular. The mop 7 is fixed to the bottom of the circular part of the bracket body 5. The middle part of the circular part of the bracket body 5 extends vertically towards one side (i.e., upward) of the screw sleeve 3 to form a polygonal connecting sleeve 51. The connecting sleeve 51 is integrally formed with the bracket body 5. The side wall of the connecting sleeve 51 is provided with multiple limiting holes 511. The bottom of the sliding sleeve 4 is open. The sliding sleeve 4 is sleeved on the connecting sleeve 51 to form the connecting part of the bracket assembly 41. The connecting part is provided with a buffer cavity 42. The buffer cavity 42 has The body is formed by a sliding sleeve 4, a connecting sleeve 51, and a circular part of the support body 5. The lower end of the lifting rod 22 passes through the sliding sleeve 4, and the pushing part 221 at its bottom is located in the buffer cavity 42. In order to provide a certain buffering effect when the mop 7 at the bottom of the support assembly 41 contacts the ground, a buffer member 6 is also elastically connected in the buffer cavity 42. The buffer member 6 is polygonal columnar and its bottom is open. The entire buffer member 6 is located in the connecting sleeve 51 and is adapted to the internal shape of the connecting sleeve 51. Multiple locking platforms 61 are provided on the outer side wall of the buffer member 6. All locking platforms 61 are correspondingly locked with all limiting locking holes 511. A magnet 62 is magnetically connected to the inner top wall of the buffer member 6. A spring 63 is provided at the bottom of the magnet 62. The spring 63 is located in the buffer member 6. The magnet 62 is elastically connected to the support body 5 through the spring 63 so that the pushing part 221 at the bottom of the lifting rod 22 can elastically press against the top surface of the buffer member 6.

[0039] Reference Figure 2 , Figure 5 , Figure 6 and Figure 7A drive source is fixed on the upper shell 11, and a gear set is provided in the control cavity. The drive source drives the lifting member 2 to rotate through the gear set. In this embodiment, the drive source is preferably a motor 8. The gear set specifically consists of a driving gear 81, a first double gear 83, a second double gear 84, a third double gear 85, an intermediate gear 86, and a driven gear 82. All gears are rotatably arranged in the control cavity. A motor 8 is fixed on the upper shell 11. The driving gear 81 is sleeved on the output shaft of the motor 8. The driving gear 81 meshes with the upper gear of the first double gear 83. The lower gear of the first double gear 83 meshes with the lower gear of the second double gear 84. The upper gear of the second double gear 84 meshes with the lower gear of the third double gear 85. The upper gear of the third double gear 85 meshes with the intermediate gear 86. The driven gear 82 is sleeved on the lifting rod 22 and meshes with the intermediate gear 86. The driven gear 82 is located between the threaded sleeve 3 and the sliding sleeve 4.

[0040] Reference Figures 1 to 12 The working principle of the mop lifting and cleaning linkage device of this utility model sweeper:

[0041] When floor cleaning is required, motor 8 rotates forward, controlling the drive gear 81 to rotate. Drive gear 81 drives the first double gear 83 to rotate, which in turn drives the second double gear 84 to rotate. The second double gear 84 drives the third double gear 85 to rotate, which in turn drives the intermediate gear 86 to rotate. The intermediate gear 86 then drives the driven gear 82 to rotate, ultimately causing the driven gear 82 to rotate forward. This causes the one-way bearing 31 to rotate forward (note: the characteristic of the one-way bearing 31 is smooth, unrestricted forward rotation). The driven gear 82 then drives the lifting rod 22 to rotate forward and descend. The gear sleeve 21 rotates forward and descends along with the lifting rod 22. The lifting rod 22 drives the screw sleeve 3 to rotate, causing the entire support assembly 41 and the mop 7 to descend together (as shown in the image). Figure 12 As shown, when the toothed sleeve 21 descends to the lowest point inside the screw sleeve 3, the toothed sleeve 21 stops descending. At this time, the driven gear 82, the lifting rod 22, the toothed sleeve 21, the screw sleeve 3, the bracket assembly 41, and the mop 7 rotate together in the forward direction. The one-way bearing 31 plays a smoothing role at this time. Finally, the mop 7 rotates and squeezes the ground, continuously scrubbing the ground and achieving a cleaning effect.

[0042] When the mop 7 generates a certain amount of dirt after cleaning, the motor 8 reverses. The motor 8, through various gear transmissions, controls the lifting rod 22 to reverse and rise. The one-way bearing 31 also reverses (note: characteristic of the one-way bearing 31: reverse rotation is hindered, with significant resistance). The driven gear 82 drives the lifting rod 22 and the gear sleeve 21 to reverse together. At this time, the one-way bearing 31 applies resistance, preventing the threaded sleeve 3 from reversing (relatively stationary). The lifting rod 22, gear sleeve 21, bracket assembly 41, and mop 7 then climb upwards along the thread (reversing and rising simultaneously). When the gear sleeve 21 reaches its highest point inside the threaded sleeve 3, the resistance of the one-way bearing 31 is at its maximum. This resistance is transmitted to the motor 8 through various gears, hindering the motor 8's rotation and increasing the current. When the current in the motor 8 increases to a certain value, the main control board stops supplying power to the motor 8. At this point, the dirty mop 7 rises to its highest point (e.g., Figure 2 As shown in the image, the robot vacuum cleaner can then return to the base station for cleaning.

[0043] The mop lifting and cleaning linkage device of this utility model utilizes the threaded connection between the lifting component 2 and the screw sleeve 3, and the screw sleeve 3 is unidirectionally rotatably connected to the housing assembly 1, linking the lifting action with the cleaning action. By controlling the lifting component 2 to rotate forward and descend, the screw sleeve 3 is driven to rotate, which controls the support assembly 41 and the fixed mop 7 to descend and rotate to clean the floor. After cleaning, the lifting component 2 is controlled to rotate in reverse and rise, and the rotation of the screw sleeve 3 is blocked, which controls the support assembly 41 and the fixed mop 7 to rise, avoiding dirt and cleaning, thus achieving the purpose of reducing costs and shrinking size.

[0044] The above-disclosed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of protection of the present utility model. Therefore, any equivalent changes made in accordance with the scope of the patent application of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A mop lifting and cleaning linkage device for a sweeping machine, comprising a housing assembly, a support assembly below the housing assembly, and a mop connected to the support assembly, characterized in that, A lifting component is rotatably connected inside the housing assembly. One end of the lifting component is threaded and fitted with a screw sleeve. The screw sleeve is located inside the housing assembly and is rotatably connected to the housing assembly in one direction, so that when the lifting component rotates forward to descend, the screw sleeve rotates accordingly, and when it rotates backward to ascend, the rotation of the screw sleeve is blocked. The other end of the lifting component is connected to the bracket assembly.

2. The sweeper's mop lifting and cleaning linkage device according to claim 1, characterized in that, The sleeve is fitted with a one-way bearing, and the sleeve is rotatably connected to the housing assembly via the one-way bearing.

3. The sweeper's mop lifting and cleaning linkage device according to claim 2, characterized in that, The lifting component includes a lifting rod and a toothed sleeve. The toothed sleeve is located inside the threaded sleeve and is fixedly sleeved on the end of the lifting rod away from the mop. The external thread of the toothed sleeve is screwed into the internal thread of the threaded sleeve.

4. The mop lifting and cleaning linkage device for a sweeper according to claim 3, characterized in that, The one-way bearing, the threaded sleeve, and the gear sleeve are all located in the connecting groove at the top of the housing assembly. The connecting part of the bracket assembly is vertically slidably disposed in the lifting groove at the bottom of the housing assembly. The lifting groove is coaxial with and connected to the connecting groove.

5. The mop lifting and cleaning linkage device for a sweeper according to claim 4, characterized in that, The lifting rod is fitted with an oil-impregnated copper sleeve, and the lifting rod is rotatably connected to the housing assembly through the oil-impregnated copper sleeve. The oil-impregnated copper sleeve is located between the connecting groove and the lifting slide groove.

6. The mop lifting and cleaning linkage device for a sweeper according to claim 1, characterized in that, A drive source is fixed on the housing assembly, and a gear set is provided inside the housing assembly. The drive source drives the lifting component to rotate through the gear set.

7. The sweeper's mop lifting and cleaning linkage device according to claim 1, characterized in that, The lifting component extends into the connecting portion of the bracket assembly at one end near the mop, and is elastically limited to the bracket assembly along the axial direction of the bracket assembly.

8. The sweeper's mop lifting and cleaning linkage device according to claim 7, characterized in that, The connecting part of the bracket assembly is provided with a buffer cavity, and a buffer member is elastically connected in the buffer cavity. The pushing part at the bottom of the lifting member is located in the buffer cavity and elastically presses against the buffer member.

9. The sweeper's mop lifting and cleaning linkage device according to claim 8, characterized in that, The buffer is magnetically connected to a magnet, which is elastically connected to the support assembly via a spring. The pushing part presses against the top surface of the buffer.

10. The mop lifting and cleaning linkage device for a sweeper according to claim 8, characterized in that, The locking platform on the outer wall of the buffer component is locked and engaged with the limiting locking hole on the inner wall of the buffer cavity. The support assembly includes a support body and a sliding sleeve. The middle part of the support body extends vertically to one side of the threaded sleeve to form a connecting sleeve. The sliding sleeve is fitted onto the connecting sleeve and constitutes the connecting part of the support assembly.

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