Roller driving structure and cleaning equipment

Abstract

The invention relates to the field of electrical equipment, and discloses a roller driving structure and cleaning equipment, the roller driving structure can effectively clean corner areas, and rotation and telescopic movement of a roller are more stable and reliable. The roller driving structure comprises a rotation driving assembly and a telescopic driving assembly, the rotation driving assembly comprises at least one output shaft and an adapter piece, the adapter piece is arranged on the output shaft in a sleeving mode, the adapter piece rotates along with the output shaft, the adapter piece can reciprocate in the axial direction of the output shaft, and the adapter piece is connected with a roller; the telescopic driving assembly comprises a first control assembly and a second control assembly which are used for exerting acting force on the roller assembly, and when the acting force of the second control assembly on the roller assembly is smaller than that of the first control assembly on the roller assembly, the first control assembly drives the roller assembly to stretch out relative to the first support. When the acting force of the second control assembly on the roller assembly is larger than that of the first control assembly on the roller assembly, the second control assembly drives the roller assembly to retract relative to the first support.

Description

Technical Field

[0001] The present invention relates to the technical field of electrical equipment, and in particular to a drum driving structure and a cleaning device. Background Art

[0002] Cleaning equipment (such as sweeping robots, mopping machines, floor scrubbers, etc.) is a type of equipment that is mainly used for sanitation and cleaning, and has the advantages of saving time and effort, low noise, and being lightweight and compact. In recent years, with the continuous development of science and technology, cleaning equipment has become more and more intelligent and can perform cleaning work in planned ground areas, which has largely freed people's hands and brought convenience to people's lives.

[0003] Existing cleaning equipment mainly includes a body base and a roller assembly. The roller assembly is fixed at the bottom of the body base. The roller set on the roller assembly cleans the floor by rotating under the drive of the motor. Usually, the roller assembly does not exceed the horizontal size range of the body, resulting in the roller assembly not being able to clean along the edge when the cleaning equipment cleans corners such as walls, resulting in a blind cleaning area, resulting in poor cleaning effect, and dust is easily accumulated in the corners over time. Summary of the invention

[0004] In view of this, the present invention provides a drum driving structure and a cleaning device to solve the problems of blind spots in cleaning, poor cleaning effect in corner areas, and poor user experience in existing cleaning devices.

[0005] In a first aspect, the present invention provides a roller drive structure, which is applied to a cleaning device, wherein the cleaning device comprises a first bracket and a roller assembly, wherein the roller assembly is telescopically movably arranged at the bottom of the first bracket, wherein the roller assembly comprises a roller, and wherein the roller drive assembly comprises:

[0006] A rotation drive assembly is arranged on the first bracket, the rotation drive assembly comprises at least one output shaft and an adapter, the adapter is sleeved on the output shaft, the adapter rotates with the output shaft, and the adapter can reciprocate along the axial direction of the output shaft, and the adapter is connected to the roller;

[0007] A telescopic drive assembly is arranged on the first bracket, and the telescopic drive assembly includes a first control assembly and a second control assembly for applying a force to the roller assembly. When the force applied by the second control assembly to the roller assembly is less than the force applied by the first control assembly to the roller assembly, the first control assembly drives the roller assembly to extend relative to the first bracket. When the force applied by the second control assembly to the roller assembly is greater than the force applied by the first control assembly to the roller assembly, the second control assembly drives the roller assembly to retract relative to the first bracket.

[0008] Beneficial effect: The roller drive structure of the present invention includes a rotating drive component and a telescopic drive component. Under the driving control of the telescopic drive component, the roller component can be telescopically moved. When cleaning corner areas such as the wall, the force of the second control component on the roller component is smaller than the force of the first control component on the roller component. The first control component drives the roller component to extend relative to the first bracket, so that the roller component is not affected by the position of the first bracket and can be closer to the corner area, so as to achieve "edge cleaning" to effectively clean the corner area, significantly reduce the cleaning blind area, and greatly improve the cleaning effect. When the corner area does not need to be cleaned (that is, when the roller component needs to be reset), the force of the second control component on the roller component is greater than the force of the first control component on the roller component, and the second control component drives the roller component to retract relative to the first bracket. Through the coordinated cooperation of the first control component and the second control component, the position of the roller component can be adjusted, so that the controllability of the roller component is stronger, and the telescopic movement process of the roller component is smoother. This roller structure not only has a better cleaning effect, but also a better user experience. In addition, under the drive control of the rotating drive assembly, the roller can rotate to realize the cleaning process of the surface to be cleaned, and because the adapter can reciprocate along the axial direction of the output shaft, the rotating drive assembly will not affect the telescopic movement of the roller assembly, thereby realizing the coordination of the rotating drive assembly and the telescopic drive assembly, simplifying the mechanism, and ensuring that the telescopic movement and rotation of the roller are smooth and reliable.

[0009] In an optional embodiment, the direction in which the first control component applies force to the roller assembly is parallel to and does not overlap with the direction in which the second control component applies force to the roller assembly.

[0010] Beneficial effect: In the roller drive structure of the present invention, the force direction of the first control component on the roller assembly is parallel to and does not overlap with the force direction of the second control component on the roller assembly, thereby realizing the dispersed setting of the first control component and the second control component, making full use of the setting space, and making the force on the roller assembly more balanced, which is beneficial to the stable driving of the roller assembly by the telescopic drive component.

[0011] In an optional embodiment, the rotation drive assembly further includes a mounting member, wherein the mounting member is disposed at an end portion of the drum, and the adapter is connected to the drum via the mounting member.

[0012] Beneficial effects: The roller drive structure of the present invention, the rotation drive assembly also includes a mounting member, the mounting member is arranged at the end of the roller, the adapter is connected to the roller through the mounting member, and the mounting member is used to facilitate the connection between the adapter and the roller. The structure of this rotation drive assembly is relatively simple and has good reliability.

[0013] In an optional embodiment, the adapter is disposed in the mounting member, and the adapter and the mounting member are connected via a rotation limiting mechanism.

[0014] Beneficial effects: In the roller driving structure of the present invention, the adapter is arranged in the mounting part to facilitate the connection between the adapter and the roller through the mounting part, and a rotation limiting mechanism is provided between the adapter and the mounting part. The adapter and the mounting part are connected by the rotation limiting mechanism, so that the adapter and the mounting part will not rotate relative to each other. The adapter and the mounting part can move together along the axial direction of the output shaft to realize the telescopic movement of the roller assembly.

[0015] In an optional embodiment, the rotation limiting mechanism includes a limiting groove and a limiting protrusion that are snap-fitted, one of the limiting groove and the limiting protrusion is arranged on the inner wall of the mounting member, and the other is arranged on the outer wall of the adapter.

[0016] Beneficial effects: The roller driving structure of the present invention, the rotation limiting mechanism includes a limit groove and a limit protrusion that are snap-fitted. The structure of this rotation limiting mechanism is relatively simple, fully utilizes the structural space, is conducive to compact structural design, and has good reliability.

[0017] In an optional embodiment, the rotation limiting mechanism further includes an elastic member, the elastic member is sleeved on the limiting protrusion, and the limiting protrusion is clamped in the limiting groove through the elastic member.

[0018] Beneficial effect: The roller driving structure of the present invention, the rotation limiting mechanism also includes an elastic member, the elastic member is sleeved on the limiting protrusion, the limiting protrusion is clamped in the limiting groove through the elastic member, and the provision of the elastic member can improve the assembly accuracy of the limiting groove and the limiting protrusion, and can make the cooperation between the limiting protrusion and the limiting groove more reliable, thereby improving the assembly firmness.

[0019] In an optional embodiment, the elastic member is interference fit with the limiting groove, and there is a gap between the limiting protrusion and the limiting groove.

[0020] Beneficial effect: In the roller driving structure of the present invention, the elastic part and the limiting groove are interference fit, which can ensure the reliability of the fit between the limiting protrusion and the limiting groove, and there is a gap between the limiting protrusion and the limiting groove, that is, the limiting protrusion and the limiting groove do not contact each other, thereby avoiding structural interference between the limiting protrusion and the limiting groove, and avoiding damage to the two due to structural interference.

[0021] In an optional embodiment, at least two of the limit grooves and the limit protrusions are provided, at least two of the limit grooves are provided at circumferential intervals around one of the adapter and the mounting member, and at least two of the limit grooves are provided at circumferential intervals around the other of the adapter and the mounting member.

[0022] Beneficial effect: The roller drive structure of the present invention, the structural arrangement of the above-mentioned limit grooves and limit protrusions, fully utilizes the structural space, and the structural layout is balanced, which is beneficial to the coordination of the limit grooves and the limit protrusions, as well as the balance and stability of force transmission, and improves the structural reliability.

[0023] In an optional embodiment, the number of the limiting grooves is greater than or equal to the number of the limiting protrusions.

[0024] Beneficial effects: In the drum drive structure of the present invention, the number of limit grooves can be greater than or equal to the number of limit protrusions, thereby improving the adaptability of the structure and making the structure assembly more flexible.

[0025] In an optional embodiment, the limiting grooves and the limiting protrusions are both provided in an even number, and the limiting grooves are symmetrically arranged in pairs, and the limiting protrusions are symmetrically arranged in pairs.

[0026] Beneficial effects: The roller drive structure of the present invention, the structure and layout of the limiting grooves and limiting protrusions can make the force transmission more balanced and stable, and improve the reliability of the structure.

[0027] In an optional embodiment, a guide structure is provided at the opening edge of the limiting groove, and the limiting protrusion enters the limiting groove through the guide structure.

[0028] Beneficial effects: The roller driving structure of the present invention is provided with a guide structure at the opening edge of the limiting groove, which enables the limiting protrusion to be installed into the limiting groove more smoothly, accurately and quickly, thereby improving assembly efficiency.

[0029] In an optional embodiment, the rotation drive assembly also includes a rotation drive member, which drives the output shaft. A limit member is provided at one end of the output shaft away from the rotation drive member, and the limit member is used to limit the distance that the adapter moves along the axial direction of the output shaft away from the rotation drive member.

[0030] Beneficial effects: The drum driving structure of the present invention can drive the output shaft and the drum to rotate by setting a driving member to realize the cleaning process, and can limit the distance that the adapter moves along the axial direction of the output shaft away from the rotating driving member by setting a limit member, thereby preventing the adapter from falling off the output shaft and improving the structural reliability.

[0031] In an optional embodiment, the first control assembly includes a control member, the control member is disposed on the first bracket, and the control member applies a pulling force to the roller assembly along the extending direction of the roller assembly.

[0032] Beneficial effects: In the roller driving structure of the present invention, the first control component includes a control member. According to different setting requirements, the control member can apply a pulling force or a pushing force along the extending direction to the roller assembly, thereby improving the flexibility of the structural setting.

[0033] In an optional embodiment, the control member is an elastic member, and when the roller assembly is retracted relative to the first bracket, the control member is in a stretched state.

[0034] Beneficial effect: In the roller driving structure of the present invention, when the roller assembly is retracted relative to the first bracket, the control member is in a stretched state to apply tension to the roller assembly. The control member can be a tension spring. This structure is simple and reliable, and is beneficial to the stable control of the roller assembly by the first control assembly.

[0035] In an optional embodiment, the second control component includes a telescopic driving member and a pulling member, the telescopic driving member is arranged on the first bracket, one end of the pulling member is driven by the telescopic driving member, and the other end of the pulling member is connected to the roller assembly.

[0036] Beneficial effects: The roller drive structure of the present invention, the second control member includes a telescopic drive member and a pulling member, the telescopic drive member can drive the pulling member, the other end of the pulling member is connected to the roller assembly and can pull the roller assembly to move, thereby realizing the retraction process. This second control component can actively drive the roller assembly to retract into the first bracket, so that the roller structure is more controllable and convenient for user operation. At the same time, the structure is relatively simple and easy to set up.

[0037] In a second aspect, the present invention further provides a cleaning device, comprising a first bracket, a roller assembly and the roller driving structure as described above, wherein the roller assembly is driven by the roller driving structure.

[0038] Because the cleaning device of the present invention includes the roller driving structure of the present invention and has the same beneficial effects as the roller driving structure, it will not be described in detail here.

[0039] In an optional embodiment, the cleaning device is one of a sweeper, a mop, a scrubber and a cleaning robot.

[0040] Beneficial effects: The cleaning device of the present invention can be one of a sweeper, a mop, a scrubber and a cleaning robot, and has a wide range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0042] Figure 1 It is an overall schematic diagram of the roller driving structure and the roller assembly of the present invention (the roller assembly is in an extended state);

[0043] Figure 2 It is an overall schematic diagram of the roller drive structure and the roller assembly of the present invention (the roller assembly is in a retracted state);

[0044] Figure 3 It is an exploded schematic diagram of the drum assembly in the present invention;

[0045] Figure 4 It is a schematic diagram of a rotating driving member in the drum driving structure of the present invention;

[0046] Figure 5 It is an exploded schematic diagram of the cooperation between the rotating driving member and the roller in the roller driving structure of the present invention;

[0047] Figure 6 It is a schematic diagram of the sleeve and the output shaft in the roller driving structure of the present invention;

[0048] Figure 7 Schematic diagram of the sleeve and the mounting member in the roller drive structure of the present invention Figure 1 ;

[0049] Figure 8 Schematic diagram of the sleeve and the mounting member in the roller drive structure of the present invention Figure 2 ;

[0050] Fig. 9 It is a cross-sectional view of the roller driving structure (partial structure) of the present invention.

[0051] Description of reference numerals:

[0052] 1. The first bracket;

[0053] 2. Roller assembly; 201. Second bracket; 202. Roller; 203. Second connecting member; 204. First connecting member;

[0054] 3. Telescopic drive parts;

[0055] 4. Pulling piece;

[0056] 5. Rotating driving member; 501. Output shaft;

[0057] 6. Adapter;

[0058] 7. Mounting parts;

[0059] 8. Control parts;

[0060] 901, limiting groove; 902, limiting protrusion; 903, elastic member;

[0061] 1001. Telescopic detection member; 1002. Telescopic detection column;

[0062] 11. Cam lever;

[0063] 1201, lifting and lowering detection part; 1202, lifting and lowering detection column;

[0064] 13. Buffer parts;

[0065] 14. Limiting parts;

[0066] 15. Guide slope;

[0067] 1601, first mating plane; 1602, second mating plane. DETAILED DESCRIPTION

[0068] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0069] At present, the roller assembly of cleaning equipment is mostly fixed at the bottom of the main body of the cleaning equipment, and the roller assembly is placed within the projection range of the main body on the ground, and the outer edge of the roller assembly is at a certain distance from the outer edge of the main body. When cleaning corner areas, such as the edge of a wall, the main body first contacts the wall, and the roller assembly cannot clean close to the wall, resulting in long-term dust accumulation at the wall, affecting the cleaning effect of the cleaning equipment.

[0070] Based on this, the present invention provides a drum driving structure and a cleaning device.

[0071] Combine the following Figure 1-Figure 9 , describing the embodiments of the roller driving structure and cleaning equipment of the present invention.

[0072] According to an embodiment of the present invention, in a first aspect, a drum driving structure is provided, which is applied to a cleaning device. The cleaning device includes a first bracket 1 and a drum assembly 2. The drum assembly 2 is telescopically movably arranged at the bottom of the first bracket 1. The drum assembly 2 includes a drum 202. The drum driving assembly includes: a rotation driving assembly and a telescopic driving assembly. The rotation driving assembly is arranged on the first bracket 1. The rotation driving assembly includes at least one output shaft 501 and an adapter 6. The adapter 6 is sleeved on the output shaft 501. The adapter 6 rotates with the output shaft 501, and the adapter 6 can reciprocate along the axial direction of the output shaft 501. The adapter 6 is connected to the drum 202; the telescopic driving assembly is arranged on the first bracket 1, and the telescopic driving assembly includes a first control assembly and a second control assembly for applying a force to the drum assembly 2. When the force of the second control assembly on the drum assembly 2 is less than the force of the first control assembly on the drum assembly 2, the first control assembly drives the drum assembly 2 to extend relative to the first bracket 1. When the force of the second control assembly on the drum assembly 2 is greater than the force of the first control assembly on the drum assembly 2, the second control assembly drives the drum assembly 2 to retract relative to the first bracket 1.

[0073] In this roller drive structure, under the driving control of the telescopic drive component, the roller component 2 can be telescopically moved. When cleaning corner areas such as the wall, the force of the second control component on the roller component 2 is smaller than the force of the first control component on the roller component 2. The first control component drives the roller component 2 to extend relative to the first bracket 1, so that the roller component 2 is not affected by the position of the first bracket 1 and can be closer to the corner area, so as to achieve "edge cleaning" to effectively clean the corner area, significantly reduce the cleaning blind area, and greatly improve the cleaning effect. When the corner area does not need to be cleaned (that is, when the roller component 2 needs to be reset), the force of the second control component on the roller component 2 is greater than the force of the first control component on the roller component 2, and the second control component drives the roller component 2 to retract relative to the first bracket 1. Through the coordinated cooperation of the first control component and the second control component, the position of the roller component 2 can be adjusted, so that the controllability of the roller component 2 is stronger, and the telescopic movement process of the roller component 2 is smoother. This roller structure not only has a better cleaning effect, but also a better user experience. In addition, under the drive control of the rotating drive assembly, the roller 202 can rotate to realize the cleaning process of the surface to be cleaned, and because the adapter 6 can reciprocate along the axial direction of the output shaft 501, the rotating drive assembly will not affect the telescopic movement of the roller assembly 2, thereby realizing the coordination of the rotating drive assembly and the telescopic drive assembly, simplifying the structure of the mechanism, and ensuring that the telescopic movement and rotation of the roller 202 are smooth and reliable.

[0074] The roller drive structure of this embodiment can be applied to cleaning equipment such as sweepers, mops, scrubbers or cleaning robots. The cleaning equipment includes a first bracket 1 and a roller assembly 2, and the roller assembly 2 is telescopically movably arranged at the bottom of the first bracket 1.

[0075] The first bracket 1 has a certain structural strength and can support and set the roller assembly 2, the rotating drive assembly and the telescopic drive assembly. Usually, the first bracket 1 is made of waterproof, corrosion-resistant and high-strength materials to ensure the service life of the entire roller structure. The first bracket 1 is a long strip-like structure. Figure 1 and Figure 2 Taking the perspective as an example, the bottom of the first bracket 1 faces the surface to be cleaned. According to the application scenarios of different cleaning equipment, the surface to be cleaned can be the ground, the wall, etc. In this embodiment, the surface to be cleaned is the ground as an example.

[0076] The roller assembly 2 is telescopically movably arranged on the first bracket 1. The roller assembly 2 is mainly used to clean the surface to be cleaned. When working, the roller assembly 2 is in direct contact with the surface to be cleaned to realize the cleaning process of the surface to be cleaned. The roller assembly 2 is arranged at the bottom of the first bracket 1 and can be telescopically moved relative to the first bracket 1, that is, the position of the roller assembly 2 is not fixed relative to the first bracket 1 and the position can be changed. The roller assembly 2 can be extended relative to the first bracket 1. When the roller assembly 2 is extended to a preset extended position (extended in place), the roller assembly 2 is in an extended state. Correspondingly, the roller assembly 2 can be retracted relative to the first bracket 1. When the roller assembly 2 is retracted to a preset retracted position (retracted in place), the roller assembly 2 is in a retracted state. In other words, the roller assembly 2 can reciprocate between the corresponding positions of the extended state and the retracted state, that is, the roller assembly 2 can move from the retracted state to the extended state, and can also move from the extended state to the retracted state.

[0077] The drum assembly 2 is in a strip-like structure as a whole. The drum assembly 2 includes a second bracket 201 and a drum 202. The second bracket 201 is also called a telescopic bracket. The second bracket 201 is the shell structure of the drum assembly 2. The second bracket 201 is telescopically connected to the first bracket 1. The second bracket 201 has a certain structural strength and can support and set the drum 202. In addition, the first bracket 1 can also be provided with structural components such as a dirt collecting tank and a waterway plate. The drum 202 is arranged in the second bracket 201, and the drum 202 is a drum mop. In this embodiment, the drum structure is a double-drum structure, that is, two drums 202 are provided. The drum 202 is arranged on the side of the second bracket 201 facing the surface to be cleaned. When working, the drum 202 can roll to clean the surface to be cleaned.

[0078] The second bracket 201 is also provided with a first connecting member 204, that is, the first control assembly is connected to the roller assembly 2 through the first connecting member 204. In addition, the second bracket 201 is also provided with a second connecting member 203, and the second control assembly is connected to the roller assembly 2 through the second connecting member 203. Of course, the roller assembly 2 also has other structures and components that the existing roller assembly has, which will not be repeated here.

[0079] In this embodiment, the first connecting member 204 and the second connecting member 203 are respectively located on both sides of the roller assembly 2 to make the structural setting on the roller assembly 2 more balanced and avoid excessive concentration of the structure. When the first control component and the second control component apply force to the roller assembly 2, the telescopic movement of the roller assembly 2 can be smoother.

[0080] The rotation drive assembly is disposed on the first bracket 1, and is used to drive the roller 202 to rotate so as to realize the cleaning process of the roller 202 on the surface to be cleaned. The rotation drive assembly includes at least one output shaft 501 and an adapter 6. In this embodiment, the rotation drive assembly includes three output shafts 501, wherein two output shafts 501 are respectively connected to the two rollers 202 to drive the two rollers 202 to rotate, and the rotation directions of the two rollers 202 can be opposite or the same, and the third output shaft 501 is connected to the cam rod 11.

[0081] In this embodiment, the roller assembly 2 can also be lifted and moved, and the cam rod 11 is used to realize the lifting and moving of the roller assembly 2. Specifically, the rotation drive assembly also includes a gear system, and the three output shafts 501 are the output ends of the gear system. The three output shafts 501 are respectively connected to the cam rod 11 and the two rollers 202, and a one-way bearing is also provided on the output shaft 501 connected to the cam rod 11.

[0082] The rotation drive assembly includes a rotation drive member 5, which is connected to the gear train. For example, when the rotation drive member 5 rotates forward, the rotation drive member 5 drives the two rollers 202 to rotate forward. At this time, the one-way bearing works forward, and the output shaft 501 connected to the cam rod 11 rotates relative to the cam rod 11. The driving force of the rotation drive member 5 is not transmitted to the cam rod 11, and the roller 202 is in a natural descending state. When it is necessary to lift the roller 202, the rotation drive member 5 is reversed, and the rotation drive member 5 drives the two rollers 202 to rotate in the opposite direction. At this time, the one-way bearing rotates in the opposite direction, and the output shaft 501 connected to the cam rod 11 is stationary relative to the cam rod 11, thereby driving the cam rod 11 to rotate. The cam rod 11 drives the roller 202 to rise during the rotation process. The rotation drive member 5 is also a lifting drive member.

[0083] The above process realizes the lifting process of the drum assembly 2. When the cleaning device returns to the base station, the drum assembly 2 can rise without touching the ground, thereby avoiding secondary contamination of the cleaned ground. The drum assembly can also avoid items such as carpets, thereby improving the user experience.

[0084] In addition, a lifting position detection column 1602 is also provided on the first bracket 1, and a lifting position detection member 1601 is also provided at the bottom of the main body of the cleaning device. When the lifting position detection column 1602 rises with the roller assembly 2 and triggers the lifting position detection member 1601, the rotation drive member 5 is powered off, and the roller 202 remains in the lifting state due to the self-locking force of the rotation drive member 5. In this embodiment, the lifting position detection member 1601 adopts a photoelectric switch.

[0085] In addition, a lifting buffer 13 is provided on the upper surface of the first bracket 1. The lifting buffer 13 can be made of a material with elastic buffering function such as a rubber pad. When the drum assembly 2 rises, the lifting buffer 13 can contact the main body of the cleaning equipment and form a buffer with the main body to avoid collision noise, while protecting the structure of the drum assembly 2.

[0086] The adapter 6 is sleeved on the output shaft 501, and the adapter 6 can also be called a sleeve. The adapter 6 cannot rotate relative to the output shaft 501, but can rotate with the output shaft 501, and can reciprocate along the axial direction of the output shaft 501. The adapter 6 is connected to the roller 202, that is, the output shaft 501 can drive the adapter 6 and the roller 202 to rotate together, and the adapter 6 can telescopically move along the axial direction of the output shaft 501 with the roller 202.

[0087] like Figure 6 As shown, one side cylindrical surface of the output shaft 501 is a non-arc surface structure, and correspondingly, one side inner wall of the adapter 6 is also a matching non-arc surface structure, so that after the adapter 6 is sleeved on the output shaft 501, the output shaft 501 can drive the adapter 6 to rotate together. In this embodiment, one side cylindrical surface of the output shaft 501 is a first matching plane 1601, and one side inner wall of the adapter 6 is a second matching plane 1602. The shapes of the first matching plane 1601 and the second matching plane 1602 match each other. When the adapter 6 is sleeved on the output shaft 501, the first matching plane 1601 and the second matching plane 1602 are in matching contact, and the adapter 6 cannot rotate relative to the output shaft 501, and the adapter 6 can only rotate with the output shaft 501. In addition, the first matching plane 1601 extends a distance along the axial direction of the output shaft 501, so that the adapter 6 can reciprocate along the axial direction of the output shaft 501 on the output shaft 501.

[0088] The telescopic mechanism is arranged on the first bracket 1, and is used to control the telescopic movement of the roller assembly 2. The telescopic mechanism includes a first control component and a second control component, and both the first control component and the second control component can exert force on the roller assembly 2 to realize the telescopic movement process of the roller assembly 2. When the force exerted by the second control component on the roller assembly 2 is less than the force exerted by the first control component on the roller assembly 2, the first control component drives the roller assembly 2 to extend relative to the first bracket 1, and when the force exerted by the second control component on the roller assembly 2 is greater than the force exerted by the first control component on the roller assembly 2, the second control component drives the roller assembly 2 to retract relative to the first bracket 1.

[0089] That is to say, by adjusting the force exerted by the first control component and the second control component on the roller assembly 2, the roller assembly 2 can be moved to the extended state under the control of the first control component, and the roller assembly 2 can also be moved to the retracted state under the control of the second control component.

[0090] Specifically, the roller assembly 2 is telescopically movably arranged on the side of the first bracket 1 facing the surface to be cleaned, the first control component drives the roller assembly 2 to extend out of the projection range of the first bracket 1 on the surface to be cleaned, and the second control component drives the roller assembly 2 to retract into the projection range of the first bracket 1 on the surface to be cleaned.

[0091] In this embodiment, the bottom of the first bracket 1 is the side of the first bracket 1 facing the surface to be cleaned, the bottom of the first bracket 1 faces the surface to be cleaned, the roller assembly 2 is telescopically movably arranged at the bottom of the first bracket 1, and the surface to be cleaned is the ground. In the retracted state, the entire roller assembly 2 is within the projection range of the first bracket 1 on the ground, the first control assembly can drive the roller assembly 2 to extend out of the projection range, and the second control assembly can drive the roller assembly 2 to retract into the projection range. In other words, when the roller assembly 2 is in the retracted state, the roller assembly 2 cannot be seen from the top view of the first bracket 1, and when the roller assembly 2 is in the extended state, at least part of the structure of the roller assembly 2 is placed outside the first bracket 1. This roller structure is suitable for cleaning equipment such as a sweeper, which is conducive to simplifying the structural design, reducing the control difficulty, and facilitating maintenance, replacement and storage. In this embodiment, when the roller assembly 2 is in the retracted state, the outer edge of the roller assembly 2 is flush with the outer edge of the first bracket 1.

[0092] In this embodiment, the setting of the rotating drive assembly does not affect the telescopic process of the roller assembly 2 driven by the telescopic drive assembly, thereby achieving structural coordination and ensuring the performance stability of the cleaning equipment.

[0093] Furthermore, the direction in which the first control component applies force to the roller assembly 2 is parallel to and does not overlap with the direction in which the second control component applies force to the roller assembly 2 .

[0094] like Figure 1-Figure 2 As shown, the first control assembly and the second control assembly are both arranged on the first bracket 1 , but the first control assembly is arranged above one of the rollers 202 , and the second control assembly is arranged above the other roller 202 .

[0095] When the first control component and the second control component apply force to the first bracket 1, the force direction of the first control component on the roller assembly 2 is parallel to and does not overlap with the force direction of the second control component on the roller assembly 2, thereby realizing the dispersed setting of the first control component and the second control component, making full use of the setting space on the first bracket 1, and making the force on the roller assembly 2 more balanced, which is beneficial to the stable driving of the telescopic drive component on the roller assembly 2, making the telescopic movement process of the roller assembly 2 smoother.

[0096] like Figure 3 As shown, specifically, the second bracket 201 is provided with a first connecting member 204 and a second connecting member 203, the force-applying end of the first control component is connected to the first connecting member 204, and the force-applying end of the second control component is connected to the second connecting member 203, and the first connecting member 204 and the second connecting member 203 are respectively located on both sides of the roller assembly 2, that is, the first connecting member 204 and the second connecting member 203 are respectively located above the two rollers 202, so that the structural setting on the roller assembly 2 is more balanced, and when the first control component and the second control component apply force to the roller assembly 2, the telescopic movement of the roller assembly 2 can be made more balanced and stable.

[0097] Furthermore, the rotation driving assembly also includes a mounting member 7 , which is disposed at the end of the drum 202 , and the adapter 6 is connected to the drum 202 via the mounting member 7 .

[0098] like Figure 5 As shown, the rotation drive assembly also includes a mounting member 7, which is arranged at the end of one end of the roller 202, so that the adapter 6 is connected to the roller 202 through the mounting member 7. By providing the mounting member 7, the connection between the adapter 6 and the roller 202 can be facilitated. The structure of this rotation drive assembly is relatively simple and has good reliability. The adapter 6 and the mounting member 7 cannot rotate relative to each other, and the adapter 6 and the mounting member 7 can rotate together with the roller 202 and can telescopically move along the output shaft 501 with the roller 202.

[0099] Furthermore, the adapter 6 is disposed in the mounting member 7, and the adapter 6 and the mounting member 7 are connected via a rotation limiting mechanism.

[0100] The adapter 6 is arranged in the mounting member 7 to facilitate the connection between the adapter 6 and the roller 202 through the mounting member 7, and a rotation limiting mechanism is arranged between the adapter 6 and the mounting member 7. The adapter 6 and the mounting member 7 are connected by the rotation limiting mechanism, so that the adapter 6 and the mounting member 7 will not rotate relative to each other. The adapter 6 and the mounting member 7 can reciprocate together along the axial direction of the output shaft 501 to realize the telescopic movement of the roller assembly 2.

[0101] like Fig. 9 As shown, the adapter 6 is arranged in the mounting member 7, most of the structure of the mounting member 7 is placed in the end of the drum 202, and the mounting member 7 is fixedly connected to the drum 202. The rotation limiting mechanism is used to limit the relative rotation between the adapter 6 and the mounting member 7, so the adapter 6 and the mounting member 7 cannot rotate relative to each other, but the adapter 6 and the mounting member 7 can move together along the axial direction of the output shaft 501, that is, the adapter 6 and the mounting member 7 are relatively fixed in the axial direction of the output shaft 501, and the mounting member 7 and the drum 202 are relatively fixed in the axial direction of the output shaft 501, so the adapter 6 and the drum 202 are relatively fixed in the axial direction of the output shaft 501, so that the adapter 6 and the mounting member 7 can move with the drum 202 telescopically.

[0102] Furthermore, the rotation limiting mechanism includes a limiting groove 901 and a limiting protrusion 902 that are snap-fitted together, one of the limiting groove 901 and the limiting protrusion 902 is arranged on the inner wall of the mounting member 7 , and the other is arranged on the outer wall of the adapter 6 .

[0103] like Figure 7 and Figure 8 As shown, the rotation limiting mechanism includes a limiting groove 901 and a limiting protrusion 902 that are engaged with each other. The limiting groove 901 can be set on the inner wall of the mounting member 7 or on the outer wall of the adapter 6. Correspondingly, the limiting protrusion 902 can be set on the outer wall of the adapter 6 or on the inner wall of the mounting member 7. In this embodiment, the limiting groove 901 is set on the inner wall of the mounting member 7, and the limiting protrusion 902 is set on the outer wall of the adapter 6. The limiting protrusion 902 is suitable for being inserted into the limiting groove 901 and engaging with the limiting groove 901 to realize the rotation limiting between the adapter 6 and the mounting member 7. The number of the limiting groove 901 and the limiting protrusion 902 is at least one.

[0104] In other embodiments, the limiting groove 901 may also be provided on the outer wall of the adapter 6 , while the limiting protrusion 902 is provided on the inner wall of the mounting member 7 , as long as the snap-fitting between the limiting protrusion 902 and the limiting groove 901 can be achieved.

[0105] Furthermore, at least two limiting grooves 901 and limiting protrusions 902 are each provided, at least two limiting grooves 901 are circumferentially spaced around one of the adapter 6 and the mounting member 7, and at least two limiting grooves 901 are circumferentially spaced around the other of the adapter 6 and the mounting member 7.

[0106] Optionally, at least two limiting grooves 901 and limiting protrusions 902 are provided. In this embodiment, four limiting grooves 901 are provided, and the four limiting grooves 901 are arranged at intervals around the circumference of the mounting member 7. Optionally, the four limiting grooves 901 are evenly spaced around the circumference of the mounting member 7. Four limiting protrusions 902 are provided, and the four limiting protrusions 902 are arranged at intervals around the circumference of the adapter 6. Optionally, the four limiting protrusions 902 are evenly spaced around the circumference of the adapter 6.

[0107] In other embodiments, the number of the limiting grooves 901 and the limiting protrusions 902 may be two, three, five, etc. Moreover, the number of the limiting grooves 901 and the limiting protrusions 902 may be the same or different.

[0108] Furthermore, the number of the limiting grooves 901 is greater than or equal to the number of the limiting protrusions 902 .

[0109] The number of the limiting grooves 901 and the limiting protrusions 902 can be the same or different. In order to achieve the snap-fitting of the limiting grooves 901 and the limiting protrusions 902, the number of the limiting grooves 901 can be greater than or equal to the number of the limiting protrusions 902. In this embodiment, the number of the limiting grooves 901 is equal to the number of the limiting protrusions 902, and there are four limiting grooves 901 and four limiting protrusions 902.

[0110] In other embodiments, the number of the limiting grooves 901 may be greater than the number of the limiting protrusions 902 .

[0111] It can be understood that the more the limiting grooves 901 and the limiting protrusions 902 are provided, the stronger the connection force between the two is, and the more reliable the rotation limiting between the adapter 6 and the mounting member 7 is.

[0112] Furthermore, the rotation limiting mechanism further includes an elastic member 903 , which is sleeved on the limiting protrusion 902 , and the limiting protrusion 902 is clamped in the limiting groove 901 through the elastic member 903 .

[0113] The rotation limiting mechanism also includes an elastic member 903. The limiting protrusion 902 protrudes from the outer wall of the adapter 6 and is a columnar structure. The elastic member 903 is sleeved on the limiting protrusion 902 and covers the outer wall of the limiting protrusion 902. The limiting protrusion 902 is clamped in the limiting groove 901 through the elastic member 903. After the elastic member 903 enters the limiting groove 901, it is squeezed and deformed by the groove wall of the limiting groove 901, so that the limiting protrusion 902 is reliably clamped in the limiting groove 901. The elastic member 903 can be made of elastic materials such as rubber, and the elastic member 903 can also be called a sealing ring.

[0114] Furthermore, the elastic member 903 is interference fit with the limiting groove 901 , and there is a gap between the limiting protrusion 902 and the limiting groove 901 .

[0115] In this embodiment, the adapter 6 and the mounting member 7 are both made of plastic, so the limiting protrusion 902 and the limiting groove 901 are also made of plastic. The interference fit between the plastic parts may cause the mechanism to get stuck, affecting the operation of the mechanism. Therefore, in this embodiment, an elastic member 903 is sleeved on the outside of the limiting protrusion 902, and the elastic member 903 is interference fit with the limiting groove 901. The elastic member 903 can achieve reliable clamping fit between the limiting protrusion 902 and the limiting groove 901 through deformation, and there is a gap between the limiting protrusion 902 and the limiting groove 901, so that the limiting protrusion 902 and the limiting groove 901 will not contact or interfere with each other, so as to improve the adaptability of the structure, facilitate the subsequent installation of the roller 202, and reduce the structural wear of the adapter 6 and the mounting member 7, and ensure the service life.

[0116] Furthermore, both the limiting grooves 901 and the limiting protrusions 902 are provided in an even number, and the limiting grooves 901 are symmetrically arranged in pairs, and the limiting protrusions 902 are symmetrically arranged in pairs. The structure and layout of the limiting grooves 901 and the limiting protrusions 902 can make the force transmission more balanced and stable, and improve the reliability of the structure.

[0117] In this embodiment, there are four limiting grooves 901 and four limiting protrusions 902, and the four limiting grooves 901 are symmetrically arranged in pairs, and the four limiting protrusions 902 are symmetrically arranged in pairs. Such relatively regular adapter 6 and mounting member 7 are easier to manufacture and shape, which is conducive to reducing manufacturing costs.

[0118] Furthermore, a guide structure is provided at the opening edge of the limiting groove 901 , and the limiting protrusion 902 enters the limiting groove 901 through the guide structure.

[0119] The opening of the limiting groove 901 faces the interior of the mounting member 7, that is, toward the adapter 6. A guide structure is provided at the opening edge of the limiting groove 901 to facilitate the limiting protrusion 902 to enter the limiting groove 901 through the guide structure and then engage with the limiting groove 901, which is beneficial to reduce the difficulty of assembly and improve the efficiency of assembly.

[0120] In this embodiment, the guiding structure is a guiding inclined surface 15 , and the guiding inclined surface 15 is inclined inwardly so that the limiting protrusion 902 can enter the limiting groove 901 more accurately and quickly.

[0121] Furthermore, the rotary drive member 5 drives the output shaft 501 , and a limit member 14 is provided at one end of the output shaft 501 away from the rotary drive member 5 . The limit member 14 is used to limit the distance that the adapter 6 moves along the axial direction of the output shaft 501 away from the rotary drive member 5 .

[0122] The rotating driving member 5 is disposed on the first bracket 1, and the rotating driving member 5 drives the output shaft 501 through the gear system, thereby driving the drum 202 to rotate. A limiting member 14 is disposed at one end of the output shaft 501 away from the rotating driving member 5, and the limiting member 14 is used to limit the distance that the adapter 6 moves along the axial direction of the output shaft 501 in a direction away from the rotating driving member 5.

[0123] In this embodiment, the stopper 14 protrudes from the surface of the output shaft 501. When the adapter 6 moves axially along the output shaft 501 to the position of the stopper 14, it is blocked by the stopper 14, so that the adapter 6 cannot continue to move in the direction away from the rotating drive member 5. Specifically, the stopper 14 is a stopper pin. The stopper pin is protruding from the surface of the output shaft 501.

[0124] Furthermore, the first control assembly includes a control member 8 , which is disposed on the first bracket 1 , and the control member 8 applies a pulling force to the roller assembly 2 along the extending direction of the roller assembly 2 .

[0125] In this embodiment, the first control assembly includes a control member 8, the control member 8 applies a pulling force along the extension direction to the roller assembly 2, the control member 8 is disposed on the first bracket 1, and the control member 8 has a force-applying end, the force-applying end is connected to the roller assembly 2, and the control member 8 applies a pulling force to the roller assembly 2 through the force-applying end. Specifically, the force-applying end of the control member 8 is connected to the first connecting member 204.

[0126] The second control assembly includes a telescopic driving member 3 and a pulling member 4. The telescopic driving member 3 is disposed on the first bracket 1. One end of the pulling member 4 is driven by the telescopic driving member 3, and the other end of the pulling member 4 is connected to the roller assembly 2. The telescopic driving member 3 is specifically a driving motor.

[0127] Specifically, the pulling member 4 is arranged on the first bracket 1 in a U-shaped form to make full use of the installation space on the first bracket 1. In addition, the pulling member 4 adopts a steel wire rope, which is wound on the winding wheel. One end of the pulling member 4 is connected to the output end of the telescopic driving member 3, and the other end of the pulling member 4 is connected to the second connecting member 203. The telescopic driving member 3 is used to provide power so that the second control component can apply a force to the roller assembly 2. One end of the pulling member 4 is driven by the telescopic driving member 3, and the other end of the pulling member 4 is connected to the roller assembly 2 through the second connecting member 203. The pulling member 4 is used to pull the roller assembly 2, and by overcoming the force of the first control component on the roller assembly 2, the roller assembly 2 is driven to retract relative to the first bracket 1.

[0128] Furthermore, the control member 8 is an elastic member, and when the roller assembly is retracted relative to the first bracket 1, the control member 8 is in a stretched state.

[0129] like Figure 1-Figure 2 As shown, Figure 1 The middle arrow a is the extension direction. Figure 2 The middle arrow b indicates the retracting direction. In this embodiment, the control member 8 is an elastic member, and when the roller assembly 2 is retracted relative to the first bracket 1, the control member 8 is in a stretched state. Specifically, the control member 8 is a tension spring, and when the telescopic driving member 3 is not working, the roller assembly 2 is subjected to the force of the tension spring and will maintain a normal extended state.

[0130] One end of the control member 8 is connected to the first bracket 1, and the other end is connected to the roller assembly 2 through the first connecting member 204. When the roller assembly 2 is retracted relative to the first bracket 1, the control member 8 is in a stretched state, and the control member 8 can apply a pulling force to the roller assembly 2 to move in the extending direction. When the pulling member 4 is released, under the pulling force of the control member 8, the roller assembly 2 is extended relative to the first bracket 1 until it reaches the preset extended position. The pulling force value of the tension spring on the roller assembly 2 is variable. When the roller assembly 2 moves toward the preset retracted position, the pulling force value of the tension spring on the roller assembly 2 gradually increases, and when the roller assembly 2 moves toward the preset extended position, the pulling force value of the tension spring on the roller assembly 2 gradually decreases, but it is necessary to keep the roller assembly 2 at the preset extended position.

[0131] The telescopic drive assembly also includes a telescopic in-place detection member 1001 and a telescopic in-place detection column 1002. When the telescopic in-place detection column 1002 contacts the telescopic in-place detection member 1001, the roller assembly 2 retracts into place to increase the reliability of the mechanism.

[0132] In order to make the telescopic movement of the roller assembly 2 smoother and more reliable, a guide rail mechanism is arranged between the first bracket 1 and the second bracket 201. The extension direction of the guide rail mechanism is consistent with the telescopic direction of the roller assembly 2. The guide rail mechanism is arranged between the first bracket 1 and the second bracket 201, which can save setting space and make the overall structure more compact and reasonable. At the same time, the roller assembly 2 can telescopically move more stably relative to the first bracket 1.

[0133] This embodiment further provides a cleaning device, comprising a first bracket 1, a roller assembly 2 and the roller driving structure as described above, wherein the roller assembly 2 is driven by the roller driving structure.

[0134] When cleaning corner areas such as the wall, the force of the second control component on the roller component 2 is smaller than the force of the first control component on the roller component 2. The first control component drives the roller component 2 to extend relative to the first bracket 1, so that the roller component 2 is not affected by the position of the first bracket 1 and can be closer to the corner area, so as to achieve "edge cleaning" to effectively clean the corner area, significantly reduce the cleaning blind area, and greatly improve the cleaning effect. When the corner area does not need to be cleaned (that is, when the roller component 2 needs to be reset), the force of the second control component on the roller component 2 is greater than the force of the first control component on the roller component 2, and the second control component drives the roller component 2 to retract relative to the first bracket 1. Through the coordinated cooperation of the first control component and the second control component, the position of the roller component 2 can be adjusted, so that the controllability of the roller component 2 is stronger, and the telescopic movement process of the roller component 2 is smoother. This roller structure not only has a better cleaning effect, but also a better user experience.

[0135] While the roller assembly 2 is telescopically moving, the rotating drive assembly drives the roller 202 to rotate to achieve cleaning of the floor. By providing an adapter 6, the adapter 6 is connected to the roller 202 through a mounting member 7, so that the telescopic movement and rotation of the roller assembly 2 do not affect each other, thereby achieving the synergistic effect of the rotating drive assembly and the telescopic drive assembly, simplifying the mechanism, and ensuring that the telescopic movement and rotation of the roller 202 are smooth and reliable.

[0136] Of course, the cleaning device also has other structural components that all existing cleaning devices have, which will not be described in detail here.

[0137] Furthermore, the cleaning device is one of a sweeper, a mop, a scrubber and a cleaning robot, for example, a sweeper robot, a handheld scrubber and a fully automatic scrubber robot, etc. In this embodiment, the cleaning device is a cleaning robot.

[0138] The working process of the cleaning device of this embodiment is described below in conjunction with the accompanying drawings:

[0139] When the cleaning device starts cleaning, it will first clean the edges of the area and then clean the interior of the area in a bow shape. When the telescopic drive member 3 rotates forward, the pulling member 4 will be retracted, pulling the second bracket 201 to overcome the tension of the tension spring to do work. When the telescopic in-place detection column 1002 on the second bracket 201 triggers the signal of the telescopic in-place detection member 1001, the telescopic drive member 3 stops working. Because the motor itself has a self-locking force, the pulling member 4 is still in a tightened state, and the second bracket 201 remains in a retracted state for cleaning. This is suitable for the case where the whole machine is cleaning the internal area (not cleaning along the edges).

[0140] When the whole machine is cleaning along the edge, the telescopic drive member 3 is controlled to reverse for a certain time T1, and T1 should be less than the time taken for the winding wheel to rotate in the opposite direction, so as to prevent the pulling member 4 from being reversely wound on the winding wheel after being released. The purpose of the reversal is to unlock the pulling member 4. When reversing, the telescopic drive member 3 loses the locking force on the pulling member 4, and under the force of the tension spring, the second bracket 201 will be reset to the extended state. This state is suitable for cleaning blind spots such as walls, corners of tables and chairs along the edge.

[0141] When the whole machine detects that there is an obstacle ahead that will hit the roller 202 or when returning to the base station, the rotating driving member 5 can lift the second bracket 201 and the roller 202 to avoid collision or secondary contamination of the cleaned ground.

[0142] Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations are all within the scope defined by the appended claims.

Claims

1. A roller driving structure, characterized in that: The cleaning device is applied to a cleaning device, the cleaning device comprising a first bracket (1) and a roller assembly (2), the roller assembly (2) being telescopically movably arranged at the bottom of the first bracket (1), the roller assembly (2) comprising a roller (202), and the roller driving assembly comprising: A rotation drive assembly is arranged on the first bracket (1), the rotation drive assembly comprises at least one output shaft (501) and an adapter (6), the adapter (6) is sleeved on the output shaft (501), the adapter (6) rotates with the output shaft (501), and the adapter (6) can reciprocate along the axial direction of the output shaft (501), and the adapter (6) is connected to the roller (202); A telescopic drive assembly is arranged on the first bracket (1), and comprises a first control assembly and a second control assembly for applying a force to the roller assembly (2); when the force applied by the second control assembly to the roller assembly (2) is less than the force applied by the first control assembly to the roller assembly (2), the first control assembly drives the roller assembly (2) to extend relative to the first bracket (1); and when the force applied by the second control assembly to the roller assembly (2) is greater than the force applied by the first control assembly to the roller assembly (2), the second control assembly drives the roller assembly (2) to retract relative to the first bracket (1).

2. The drum driving structure according to claim 1, characterized in that: The direction in which the first control component applies force to the roller component (2) is parallel to and does not overlap the direction in which the second control component applies force to the roller component (2).

3. The drum driving structure according to claim 1, characterized in that: The rotary drive assembly further comprises a mounting member (7), wherein the mounting member (7) is arranged at the end of the roller (202), and the adapter (6) is connected to the roller (202) via the mounting member (7).

4. The drum driving structure according to claim 3, characterized in that: The adapter (6) is arranged in the mounting member (7), and the adapter (6) and the mounting member (7) are connected via a rotation limiting mechanism.

5. The drum driving structure according to claim 4, characterized in that: The rotation limiting mechanism comprises a limiting groove (901) and a limiting protrusion (902) that are snap-fitted together, one of the limiting groove (901) and the limiting protrusion (902) being arranged on the inner wall of the mounting member (7), and the other being arranged on the outer wall of the adapter member (6).

6. The drum driving structure according to claim 5, characterized in that: The rotation limiting mechanism further comprises an elastic member (903), wherein the elastic member (903) is sleeved on the limiting protrusion (902), and the limiting protrusion (902) is clamped in the limiting groove (901) through the elastic member (903).

7. The drum driving structure according to claim 6, characterized in that: The elastic member (903) is interference-fitted with the limiting groove (901), and a gap is provided between the limiting protrusion (902) and the limiting groove (901).

8. The drum driving structure according to claim 5, characterized in that: At least two of the limiting grooves (901) and the limiting protrusions (902) are provided, and at least two of the limiting grooves (901) are provided at intervals in the circumferential direction around one of the adapter (6) and the mounting member (7), and at least two of the limiting grooves (901) are provided at intervals in the circumferential direction around the other of the adapter (6) and the mounting member (7).

9. The drum driving structure according to claim 8, characterized in that: The number of the limiting grooves (901) is greater than or equal to the number of the limiting protrusions (902).

10. The drum driving structure according to claim 8, characterized in that: The limiting grooves (901) and the limiting protrusions (902) are both provided in an even number, and the limiting grooves (901) are symmetrically arranged in pairs, and the limiting protrusions (902) are symmetrically arranged in pairs.

11. The drum driving structure according to claim 5, characterized in that: A guide structure is provided at the opening edge of the limiting groove (901), and the limiting protrusion (902) enters the limiting groove (901) through the guide structure.

12. The drum driving structure according to claim 1, characterized in that: The rotary drive assembly further comprises a rotary drive member (5), wherein the rotary drive member (5) drives the output shaft (501), and a limit member (14) is provided at one end of the output shaft (501) away from the rotary drive member (5), wherein the limit member (14) is used to limit the distance that the adapter member (6) moves along the axial direction of the output shaft (501) in a direction away from the rotary drive member (5).

13. The drum driving structure according to any one of claims 1 to 12, characterized in that: The first control assembly comprises a control member (8), the control member (8) being arranged on the first bracket (1), and the control member (8) applying a pulling force to the roller assembly (2) along the extension direction of the roller assembly (2).

14. The drum driving structure according to claim 13, characterized in that: The control member (8) is an elastic member, and when the roller assembly is retracted relative to the first bracket (1), the control member (8) is in a stretched state.

15. The drum driving structure according to claim 13, characterized in that: The second control assembly comprises a telescopic driving member (3) and a pulling member (4); the telescopic driving member (3) is arranged on the first bracket (1); one end of the pulling member (4) is driven by the telescopic driving member (3), and the other end of the pulling member (4) is connected to the roller assembly (2).

16. A cleaning device, characterized in that: It comprises a first bracket (1), a roller assembly (2) and a roller driving structure according to any one of claims 1 to 15, wherein the roller assembly (2) is driven by the roller driving structure.

17. The cleaning device according to claim 16, characterized in that The cleaning device is one of a sweeper, a mop, a scrubber and a cleaning robot.

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