Mop extension device

Abstract

The utility model belongs to the technical field of sweeper, specifically disclose a kind of outer extension device of outer swing type mop, including shell, be equipped with driving mechanism on shell, the bottom of shell is openwork, L-shaped rotating box is passed through on shell, the upper end of rotating box is equipped with annular rack, rotating box is along the circumferential sliding limit connection of annular rack with annular rack, the half circle gear tooth on the outer wall of annular rack is engaged with driving mechanism, the directional rotary motion of rotating box is realized to control the lower end of rotating box directional swing in the shell, the lower end of rotating box is connected with cleaning assembly, cleaning assembly is located shell outside and with the eccentricity setting of rotating connection part of rotating box to realize cleaning assembly extension swing, rotating box part close to cleaning assembly is elastically connected with shell by tension spring to control rotating box gyration.The utility model's outer extension device of outer swing type mop, mop's flexible outer swing and accurate retraction can be realized, effectively expand the cleaning range of sweeper, improve cleaning effect and reliability.

Description

Technical Field

[0001] This utility model belongs to the field of sweeping machine technology, and in particular relates to an outward swing mop extension device. Background Technology

[0002] With the improvement of people's living standards and the increasing demands for cleanliness in their living environments, robotic vacuum cleaners, as a convenient cleaning tool, have been widely used in homes, offices, and other places. By automatically planning paths and executing cleaning tasks, robotic vacuum cleaners greatly save manpower and time, becoming an indispensable smart home device in modern life.

[0003] In the cleaning function of a robotic vacuum cleaner, the mop extension device is one of the key components. It expands the cleaning range of the vacuum cleaner, allowing it to reach under furniture, in corners, and other narrow areas, effectively improving the comprehensiveness and thoroughness of the cleaning. However, existing robotic vacuum cleaner mop extension devices still have many shortcomings in practical applications.

[0004] (i) Limited cleaning area

[0005] Currently, some robotic vacuum cleaners on the market have simple mop extension mechanisms, resulting in limited mop extension and retraction methods. For example, some robotic vacuum cleaners use a fixed mop extension structure, which prevents the mop from being flexibly adjusted according to different cleaning scenarios, making it difficult to reach narrow spaces and significantly limiting the cleaning range. Even if some robotic vacuum cleaners have a mop swing function, the swing range is small, failing to effectively clean some deep corners and crevices, thus failing to meet users' needs for comprehensive cleaning.

[0006] (ii) Inaccurate control

[0007] Existing mop extension mechanisms often suffer from inaccurate control over the mop's outward swing and retraction. Some mechanisms employ simple forward and reverse motor control, which cannot precisely control the mop's outward swing angle and retraction position. During cleaning, the mop may swing out excessively, colliding with surrounding objects and damaging furniture or the robot vacuum itself; or the mop may not retract properly, affecting the robot vacuum's normal operation and cleaning performance. Furthermore, inaccurate control can also cause the mop to shake or sway during cleaning, reducing cleaning quality.

[0008] (iii) Lack of an effective recovery mechanism

[0009] Some robotic vacuum cleaners lack an effective return mechanism for the mop's extended attachment after cleaning. When the vacuum stops working, the mop may not automatically retract to its initial position, instead remaining outwards. This not only affects the overall aesthetics of the vacuum but may also damage the mop or other components during handling or storage. Furthermore, the mop needs to be manually retracted the next time the vacuum is started, increasing the user's workload.

[0010] Therefore, the inventors dedicated themselves to designing a mop extension device to solve the above problems. Utility Model Content

[0011] The purpose of this utility model is to provide an outward-swinging mop extension device, which can realize the flexible outward swing and precise retraction of the mop, effectively expanding the cleaning range of the sweeper and improving the cleaning effect and reliability.

[0012] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0013] An outward-swinging mop extension device includes a housing with a drive mechanism. The bottom of the housing is hollowed out, and an L-shaped rotating box passes through the housing. An annular rack is fitted onto the upper end of the rotating box. The rotating box is slidably and limitedly connected to the annular rack along its circumference. Half-circle teeth on the outer wall of the annular rack mesh with the drive mechanism to achieve directional rotation of the rotating box, thereby controlling the lower end of the rotating box to swing directionally within the housing. A cleaning component is connected to the lower end of the rotating box. The cleaning component is located outside the housing and is eccentrically positioned with respect to the rotating connection of the rotating box to achieve outward swinging of the cleaning component. The part of the rotating box near the cleaning component is elastically connected to the housing via a tension spring to control the rotation of the rotating box.

[0014] As an improvement of the external swing mop extension device of this utility model, a limiting grating is fixedly connected to the top of the housing, and the protruding part at the bottom of the limiting grating slides in cooperation with the groove on the annular rack. The groove is located outside the half-circle tooth of the annular rack and is arc-shaped along the circumference of the annular rack.

[0015] As an improvement of the external swing mop extension device of this utility model, the outer wall of the rotating box is provided with multiple limiting platforms, and the inner edge of the annular rack is provided with multiple limiting grooves along its circumference. Adjacent two limiting grooves are separated by a baffle, and all the limiting platforms are slidably arranged in all the limiting grooves.

[0016] As an improvement of the external swing mop extension device of this utility model, all the limiting grooves are provided with an insertion port for the corresponding limiting platform to pass through.

[0017] As an improvement of the external swing mop extension device of this utility model, the rotating box includes a cylindrical body, a box body and a bottom cover. The bottom cover and the cylindrical body are respectively disposed at the bottom and top of the box body to form an L shape. The cylindrical body passes through the shell. All the limiting platforms are located on the cylindrical body. The box body and the bottom cover are located inside the shell.

[0018] As an improvement of the external swing mop extension device of this utility model, the side wall of the cylinder is provided with multiple fastening grooves, and the box is provided with multiple fastening platforms, and all the fastening platforms are fastened to all the fastening grooves in a one-to-one correspondence.

[0019] As an improvement of the external swing mop extension device of this utility model, the side wall of the cylinder is provided with multiple locking platforms, the inside of the shell is provided with an annular platform, the cylinder is located inside the annular platform, and all the locking platforms are hooked on the annular platform.

[0020] As an improvement of the external swing mop extension device of this utility model, a lifting motor is provided inside the cylinder, and the lifting motor controls the lifting and lowering movement of the cleaning component through the lifting drive mechanism inside the box.

[0021] As an improvement of the external swing mop extension device of this utility model, a connecting column is fixed inside the housing, and a hanging platform is fixed at one end of the rotating box near the cleaning component. The two ends of the tension spring are respectively hung on the connecting column and the hanging platform. When the tension spring is in the extended state, the rotating part at the upper end of the rotating box is located between the connecting column and the hanging platform.

[0022] As an improvement of the external swing mop extension device of this utility model, the driving mechanism includes a drive gear and an external swing gear, wherein the drive gear meshes with half a turn of the gear teeth through the external swing gear.

[0023] Compared with existing technologies, the external swing mop extension device of this utility model has an elastic connection between the rotating box and the housing via a tension spring. A drive mechanism drives the ring rack to rotate forward, with the ring rack sliding against the rotating box, thereby causing the rotating box to rotate in a specific direction. This causes the lower end of the rotating box to swing in a specific direction within the housing, extending the tension spring and allowing the cleaning component to swing outward. This allows the mop to reach into narrow areas for cleaning, effectively expanding the cleaning range. The drive mechanism then drives the ring rack to rotate in the opposite direction, releasing the rotating box. The tension spring pulls the rotating box back, swinging the cleaning component outward and stopping the outward swing. This achieves precise mop retraction, ensuring the mop accurately returns to its initial position. This avoids collisions with surrounding objects caused by the outward swing of the mop and eliminates the need for manual mop retraction, improving the cleaning effect, reliability, and user experience of the device. Attached image description:

[0024] Figure 1This is a perspective view of the outward-swinging mop extension device of this utility model;

[0025] Figure 2 This is a cross-sectional view of the outward-swinging mop extension device of this utility model;

[0026] Figure 3 yes Figure 2 Enlarged view of point A in the middle;

[0027] Figure 4 This is a partial exploded perspective view of the outward-swinging mop extension device of this utility model;

[0028] Figure 5 This is an exploded perspective view of the outward-swinging mop extension device of this utility model;

[0029] Figure 6 This is a three-dimensional enlarged view of the drive mechanism and ring rack of this utility model.

[0030] Figure 7 This is a three-dimensional enlarged view of the annular rack and the limiting grating of this utility model;

[0031] Figure 8 This is a three-dimensional enlarged view of the cylindrical body of this utility model;

[0032] Figure 9 This is a three-dimensional enlarged view of the rotating box, cleaning component, drive mechanism and ring rack in this utility model;

[0033] Figure 10 This is another three-dimensional enlarged view of the rotating box, cleaning component, drive mechanism and ring rack in this utility model.

[0034] Illustration:

[0035] 1. Housing; 11. Mounting hole; 111. Mounting groove; 12. Circular platform; 13. Connecting column; 2. Mop; 21. Bracket; 22. Cleaning assembly; 3. Drive mechanism; 31. External swing motor; 32. Drive gear; 33. External swing gear; 4. Lifting motor; 5. Circular rack; 51. Insert; 52. Limiting groove; 53. Slide groove; 531. Side platform; 54. Stop; 6. Rotating box; 61. Cylinder; 611. Limiting platform; 612. Locking platform; 613. Fastening groove; 62. Box body; 621. Fastening platform; 63. Bottom cover; 631. Hanging platform; 7. Tension spring; 8. Limiting light grid. Detailed Implementation

[0036] 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.

[0037] Reference Figures 1 to 10An outward-swinging mop extension device includes a housing 1, a rotating box 6, a cleaning component 22, an annular rack 5, and a drive mechanism 3. The drive mechanism 3 is disposed on the housing 1, and the bottom of the housing 1 is hollowed out. The rotating box 6 is L-shaped and is disposed through the housing 1. The annular rack 5 is sleeved on the upper end of the rotating box 6. The rotating box 6 is slidably limited to the annular rack 5 along the circumference. The semi-circular teeth on the outer wall of the annular rack 5 mesh with the drive mechanism 3 to realize the directional rotational movement of the rotating box 6, thereby controlling the lower end of the rotating box 6 to swing directionally within the housing 1. The lower end of the rotating box 6 is connected to the cleaning component 22. The cleaning component 22 is located outside the housing 1 and is eccentrically disposed with the rotating connection part of the rotating box 6 to realize the outward swing of the cleaning component 22. The part of the rotating box 6 near the cleaning component 22 is elastically connected to the housing 1 through a tension spring 7 to control the rotation of the rotating box 6.

[0038] Reference Figure 1 , Figure 2 , Figure 4 and Figure 5 The top of the housing 1 is provided with a mounting hole 11, and a plurality of mounting grooves 111 are provided at intervals on the side wall of the mounting hole 11. Each mounting groove 111 is arranged along the axial direction of the mounting hole 11. The bottom of the housing 1 is hollowed out to form a bottom groove, and the inner wall of the mounting hole 11 extends into the bottom groove of the housing 1 to form an annular platform 12.

[0039] Reference Figure 4 , Figure 5 , Figure 8 , Figure 9 and Figure 10 The rotating box 6 has multiple limiting platforms 611 on its outer wall. The internal space of the rotating box 6 is L-shaped. The rotating box 6 includes a cylindrical body 61, a box body 62, and a bottom cover 63. The bottom cover 63 and the cylindrical body 61 are respectively set at the bottom and top of the cylindrical body 61 to form an L-shape. The box body 62 and the bottom cover 63 are both located inside the shell 1. The top end and the entire bottom of the box body 62 are hollowed out. The box body 62 has multiple fastening platforms 621. The top of the bottom cover 63 is hollowed out. The cylindrical body 61 is vertically set at the hollowed-out top of the box body 62. In the empty section, the cylinder 61 passes through the shell 1. Multiple locking platforms 612 are provided on the side wall at the lower end of the cylinder 61. The cylinder 61 is located in the mounting hole 11. All locking platforms 612 are hooked onto the annular platform 12 so that the cylinder 61 can only rotate and cannot move upward within the shell 1. Multiple fastening grooves 613 are provided on the side wall at the lower end of the cylinder 61. All fastening platforms 621 are correspondingly fastened to all fastening grooves 613 so that the cylinder 61 can be fastened and connected to the box 62. All limiting platforms 611 are specifically located on the outer side wall at the upper end of the cylinder 61.

[0040] Reference Figure 4 and Figure 5A connecting column 13 is fixed inside the housing 1. A hanging platform 631 is fixed at one end of the rotating box 6 near the cleaning component 22. The two ends of the tension spring 7 are respectively hung on the connecting column 13 and the hanging platform 631. When the tension spring 7 is in the extended state, the rotating part at the upper end of the rotating box 6 is located between the connecting column 13 and the hanging platform 631.

[0041] Reference Figure 2 , Figure 3 , Figure 6 and Figure 7 The entire annular rack 5 is annular and located at the top of the housing 1. The protrusion at the top of the cylinder 61 is attached to the annular rack 5. Multiple limiting grooves 52 are provided along the circumference of the inner edge of the annular rack 5. A stop 54 separates two adjacent limiting grooves 52. All limiting stops 611 are slidably disposed in all limiting grooves 52. All limiting grooves 52 are provided with insertion ports 51 for the corresponding limiting stops 611 to pass through. The cylinder 61 is installed as follows: insert the cylinder 61 into the mounting hole 11 from bottom to top, so that the multiple limiting stops 611 on the outer wall of the cylinder 61 slide up along the multiple mounting grooves 111 on the inner wall of the mounting hole 11 until all the limiting stops 611 slide to the corresponding insertion ports 51. Then rotate the cylinder 61 or the annular rack 5 to slide the multiple limiting stops 611 onto the corresponding limiting grooves 52, so that the cylinder 61 slides along the circumference of the annular rack 5. The annular rack 5 is also provided with a sliding groove 53. The sliding groove 53 is located outside the half-circle tooth of the annular rack 5 and is arranged in an arc shape along the circumference of the annular rack 5. A side platform 531 is provided at the outer edge of each end of the sliding groove 53.

[0042] Reference Figure 2 , Figure 3 and Figure 7 A limiting grating 8 is fixedly connected to the top of the housing 1. The limiting grating 8 is located on the side of the housing 1. The protruding part at the bottom of the limiting grating 8 is U-shaped and slides in cooperation with the groove 53 on the annular rack 5. When the limiting grating 8 is located at one end of the groove 53, the side platform 531 at that end is located in the U-shaped protruding part at the bottom of the limiting grating 8.

[0043] Reference Figure 1 , Figure 2 , Figure 5 , Figure 9 and Figure 10 The drive mechanism 3 includes a drive gear 32, an external swing gear 33 and an external swing motor 31. The external swing motor 31 is fixed in the bottom groove of the housing 1. The drive gear 32 is fixed on the output shaft of the external swing motor 31 and located at the top of the housing 1. The external swing gear 33 is rotatably disposed at the top of the housing 1 and located between the drive gear 32 and the ring rack 5. The drive gear 32 meshes with the half-circle teeth of the ring rack 5 through the external swing gear 33.

[0044] Reference Figure 9 and Figure 10 The cylinder 61 is equipped with a lifting motor 4, and the housing 62 is equipped with a lifting drive mechanism (not shown). The cleaning component 22 includes a bracket 21 and a mop 2. The bracket 21 is connected to the end of the bottom cover 63 away from the lifting motor 4. The mop 2 is sleeved on the bracket 21. The lifting motor 4 controls the lifting movement of the cleaning component 22 through the lifting drive mechanism. The lifting structure and principle can adopt the patent technology disclosed in application number 2025210513017 (patent name: a mop lifting cleaning linkage device for a sweeping machine).

[0045] Reference Figures 1 to 10 The working principle of this utility model of an outward-swinging mop extension device is as follows:

[0046] When the external swing motor 31 is powered on and rotates in the forward direction, the external swing motor 31 controls the drive gear 32 to rotate. The drive gear 32 drives the ring rack 5 to rotate through the external swing gear 33. The baffle 54 on the inner wall of the ring rack 5 pushes the limit platform 611 on the outer wall of the cylinder 61, so that the cylinder 61 rotates together with the ring rack 5 until the rotating box 6 returns to the original position and the gears bite and lock. At this time, the tension spring 7 is stretched to its longest state.

[0047] When the external swing motor 31 is powered on and reverses, the drive gear 32 drives the ring rack 5 to change the direction of rotation through the external swing gear 33, so that the limiting platform 611 of the cylinder 61 slides relative to the limiting groove 52 of the ring rack 5, releasing the cylinder 61. At the same time, the tension spring 7 also begins to shorten, pulling the rotating box 6 to swing outward until the last tooth of the ring rack 5 meshes with the external swing gear 33, stopping the swinging action.

[0048] After the mop 2 is extended, when the sweeper collides with the cleaning component 22 along the wall, the cleaning component 22 will retract. When resetting, the spring 7 extends and retracts to achieve the reset.

[0049] This utility model's outward-swinging mop extension device features a rotating box 6 elastically connected to the housing 1 via a tension spring 7. A drive mechanism 3 drives a ring rack 5 to rotate forward, with the ring rack 5 sliding relative to the rotating box 6, thereby causing the rotating box 6 to rotate directionally. This allows the lower end of the rotating box 6 to swing directionally within the housing 1, extending the tension spring 7 and enabling the cleaning component 22 to swing outwards. This allows the mop 2 to reach into narrow areas for cleaning, effectively expanding the cleaning range. The drive mechanism 3 drives the ring rack 5 to rotate in the opposite direction, releasing the rotating box 6. The tension spring 7 then pulls the rotating box 6 back, swinging the cleaning component 22 outwards and stopping the outward swing. This achieves precise retraction of the mop 2, ensuring it accurately returns to its initial position. This avoids collisions between the outward swing of the mop 2 and surrounding objects, and eliminates the need for manual retraction of the mop 2, improving the device's cleaning effect, reliability, and user experience.

[0050] 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. An outward-swinging mop extension device, comprising a housing, characterized in that, The housing is equipped with a drive mechanism. The bottom of the housing is hollowed out, and an L-shaped rotating box runs through the housing. An annular rack is fitted onto the upper end of the rotating box. The rotating box is slidably connected to the annular rack along its circumference. The semi-circular teeth on the outer wall of the annular rack mesh with the drive mechanism to realize the directional rotational movement of the rotating box, thereby controlling the directional swing of the lower end of the rotating box within the housing. A cleaning component is connected to the lower end of the rotating box. The cleaning component is located outside the housing and is eccentrically set with the rotating connection part of the rotating box to realize the outward swing of the cleaning component. The part of the rotating box near the cleaning component is elastically connected to the housing through a tension spring to control the rotation of the rotating box.

2. The outward-swinging mop extension device according to claim 1, characterized in that, The top of the housing is fixedly connected to a limiting grating, and the protruding part at the bottom of the limiting grating slides in conjunction with the groove on the annular rack. The groove is located outside the half-circle tooth of the annular rack and is arc-shaped along the circumference of the annular rack.

3. The outward-swinging mop extension device according to claim 1, characterized in that, The outer wall of the rotating box is provided with multiple limiting platforms, and the inner edge of the annular rack is provided with multiple limiting grooves along its circumference. Adjacent two limiting grooves are separated by a baffle, and all the limiting platforms are slidably disposed in all the limiting grooves.

4. The outward-swinging mop extension device according to claim 3, characterized in that, All of the aforementioned limiting slots are provided with an insertion port for the corresponding limiting platform to pass through.

5. The outward-swinging mop extension device according to claim 3, characterized in that, The rotating box includes a cylindrical body, a box body, and a bottom cover. The bottom cover and the cylindrical body are respectively disposed at the bottom and top of the box body to form an L-shape. The cylindrical body passes through the shell. All the limiting platforms are located on the cylindrical body. The box body and the bottom cover are located inside the shell.

6. The outward-swinging mop extension device according to claim 5, characterized in that, The side wall of the cylinder is provided with multiple fastening grooves, and the box is provided with multiple fastening platforms. All the fastening platforms are fastened to all the fastening grooves in a one-to-one correspondence.

7. The outward-swinging mop extension device according to claim 5, characterized in that, The side wall of the cylinder is provided with multiple locking platforms, and the interior of the shell is provided with an annular platform. The cylinder is located inside the annular platform, and all the locking platforms are attached to the annular platform.

8. The outward-swinging mop extension device according to claim 5, characterized in that, The cylinder is equipped with a lifting motor, which controls the lifting and lowering movement of the cleaning component through a lifting drive mechanism inside the housing.

9. The outward-swinging mop extension device according to claim 1, characterized in that, A connecting column is fixed inside the housing, and a hanging platform is fixed at one end of the rotating box near the cleaning component. The two ends of the tension spring are respectively hooked onto the connecting column and the hanging platform. When the tension spring is in the extended state, the rotating part at the upper end of the rotating box is located between the connecting column and the hanging platform.

10. The outward-swinging mop extension device according to claim 1, characterized in that, The drive mechanism includes a drive gear and an external swing gear, wherein the drive gear meshes with half a turn of the gear teeth through the external swing gear.

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