Roller driving structure and cleaning equipment

Abstract

The utility model relates to the field of electrical equipment, and discloses a roller driving structure and cleaning equipment, and the roller driving structure can effectively clean corner areas, so that the rotation and telescopic movement of a roller are 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] This utility model relates to the field of electrical equipment technology, specifically to a roller drive structure and cleaning equipment. Background Technology

[0002] Cleaning equipment (such as robotic vacuum cleaners, mops, and floor scrubbers) is a type of equipment primarily used for sanitation and cleaning. It offers advantages such as saving time and effort, low noise, and being lightweight and compact. In recent years, with the continuous development of technology, cleaning equipment has become increasingly intelligent, capable of cleaning within designated areas, greatly freeing people's hands and bringing convenience to their lives.

[0003] Existing cleaning equipment mainly consists of a base and a roller assembly. The roller assembly is fixed to the bottom of the base, and the rollers on the assembly clean the floor by rotating under the drive of a motor. Typically, the roller assembly does not exceed the horizontal dimensions of the machine body, which means that when cleaning edges and corners, the roller assembly cannot clean along the edges, creating blind spots and resulting in poor cleaning performance. Over time, dust easily accumulates in these corners. Utility Model Content

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

[0005] In a first aspect, this utility model provides a roller drive structure applied to a cleaning device. The cleaning device includes a first support and a roller assembly. The roller assembly is retractably and movably disposed at the bottom of the first support. The roller assembly includes a roller. The roller drive structure includes:

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

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

[0008] Beneficial Effects: The roller drive structure of this utility model includes a rotation drive component and a telescopic drive component. Under the drive control of the telescopic drive component, the roller component can move telescopically. When cleaning corner areas such as walls, the force exerted by the second control component on the roller component is less than the force exerted by the first control component. The first control component drives the roller component to extend relative to the first support, allowing the roller component to be closer to the corner area without being affected by the position of the first support, achieving "edge cleaning" to effectively clean corner areas, significantly reducing cleaning blind spots and greatly improving cleaning effect. When cleaning corner areas is not needed (i.e., when the roller component needs to return to its original position), the force exerted by the second control component on the roller component is greater than the force exerted by the first control component, causing the roller component to retract relative to the first support. Through the coordinated operation of the first and second control components, the position of the roller component can be adjusted, making the roller component more controllable and the telescopic movement process of the roller component smoother. This roller structure not only has a better cleaning effect but also provides a better user experience. In addition, under the drive control of the rotary drive assembly, the roller can rotate to achieve the cleaning process of the surface to be cleaned. Moreover, since the adapter can reciprocate along the axial direction of the output shaft, the rotary drive assembly will not affect the telescopic movement of the roller assembly, thereby achieving the coordination between the rotary drive assembly and the telescopic drive assembly, simplifying the mechanism, and ensuring that the telescopic movement and rotation of the roller are both smooth and reliable.

[0009] In one alternative implementation, the direction of the force applied by the first control component to the roller assembly is parallel to and does not coincide with the direction of the force applied by the second control component to the roller assembly.

[0010] Beneficial effects: In the roller drive structure of this utility model, the force applied by the first control component to the roller assembly is parallel and does not coincide with the force applied by the second control component to the roller assembly. This realizes the decentralized setting of the first and second control components, makes full use of the setting space, and makes the roller assembly more evenly stressed, which is conducive to the stable driving of the roller assembly by the telescopic drive component.

[0011] In one alternative embodiment, the rotation drive assembly further includes a mounting member disposed at the end of the roller, and the adapter is connected to the roller via the mounting member.

[0012] Beneficial effects: The roller drive structure of this utility model includes a mounting component for the rotation drive assembly. The mounting component is located at the end of the roller, and the adapter is connected to the roller through the mounting component. The mounting component facilitates the connection between the adapter and the roller. This rotation drive assembly has a relatively simple structure and good reliability.

[0013] In one optional embodiment, the adapter is disposed within the mounting component, and the adapter and the mounting component are connected by a rotation limiting mechanism.

[0014] Beneficial effects: In the roller drive structure of this utility model, the adapter is set inside the mounting part to facilitate the connection between the adapter and the roller through the mounting part. Moreover, a rotation limiting mechanism is provided between the adapter and the mounting part. The adapter and the mounting part are connected through 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 one optional embodiment, the rotation limiting mechanism includes a limiting groove and a limiting protrusion that engage with each other, wherein one of the limiting groove and the limiting protrusion is disposed on the inner wall of the mounting member, and the other is disposed on the outer wall of the adapter.

[0016] Beneficial effects: The roller drive structure of this utility model has a rotation limiting mechanism including a locking groove and a limiting protrusion. This rotation limiting mechanism has a relatively simple structure, makes full use of the structural space, is conducive to compact structural design, and has good reliability.

[0017] In one optional embodiment, the rotation limiting mechanism further includes an elastic element, which is sleeved on the limiting protrusion, and the limiting protrusion is engaged in the limiting groove by the elastic element.

[0018] Beneficial effects: The roller drive structure of this utility model includes an elastic element in the rotation limiting mechanism. The elastic element is sleeved on the limiting protrusion, and the limiting protrusion is engaged in the limiting groove by the elastic element. The addition of the elastic element can improve the assembly accuracy of the limiting groove and the limiting protrusion, and make the fit between the limiting protrusion and the limiting groove more reliable, thereby improving the assembly firmness.

[0019] In one alternative embodiment, the elastic element is interference-fitted with the limiting groove, and there is a gap between the limiting protrusion and the limiting groove.

[0020] Beneficial effects: The roller drive structure of this utility model has an interference fit between the elastic element and the limiting groove, which can ensure the reliability of the fit between the limiting protrusion and the limiting groove. 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, thus avoiding structural interference between the limiting protrusion and the limiting groove and avoiding damage caused by structural interference.

[0021] In one optional embodiment, at least two of the limiting grooves and the limiting protrusions are provided, with at least two limiting grooves circumferentially spaced around one of the adapter and the mounting member, and at least two limiting grooves circumferentially spaced around the other of the adapter and the mounting member.

[0022] Beneficial effects: The roller drive structure of this utility model, with the above-mentioned arrangement of the limiting groove and limiting protrusion, makes full use of the structural space and the structural layout is balanced, which is conducive to the cooperation of the limiting groove and limiting protrusion, as well as the balance and stability of force transmission, and improves the structural reliability.

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

[0024] Beneficial effects: The number of limiting grooves in the roller drive structure of this utility model can be greater than or equal to the number of limiting protrusions, which improves the adaptability of the structure and makes the assembly of the structure more flexible.

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

[0026] Beneficial effects: The roller drive structure of this utility model, with the structure and layout of the aforementioned limiting groove and limiting protrusion, enables more balanced and stable force transmission, thereby improving the reliability of the structure.

[0027] In one 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 drive structure of this utility model has 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, thus improving assembly efficiency.

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

[0030] Beneficial effects: The roller drive structure of this utility model can drive the output shaft and roller to rotate by setting the drive component to realize the cleaning process. In addition, by setting the limiting component, the distance that the adapter can move away from the rotating drive component along the output shaft axis can be limited, preventing the adapter from falling off the output shaft and improving the structural reliability.

[0031] In one alternative embodiment, the first control component includes a control element disposed on the first support, the control element applying a tensile force to the roller assembly in the extension direction of the roller assembly.

[0032] Beneficial effects: The roller drive structure of this utility model includes a control component in the first control component. According to different setting needs, the control component can apply a pulling force or a pushing force along the extension direction to the roller assembly, thereby improving the flexibility of the structure setting.

[0033] In one alternative embodiment, the control element is an elastic element that is in a stretched state when the roller assembly retracts relative to the first support.

[0034] Beneficial effects: In the roller drive structure of this utility model, when the roller assembly retracts relative to the first support, the control component is in a stretched state to apply tension to the roller assembly. The control component can be a tension spring. This structure is simple and reliable, which is beneficial to the stable control of the roller assembly by the first control component.

[0035] In one optional embodiment, the second control component includes a telescopic drive and a traction member, the telescopic drive being disposed on the first bracket, one end of the traction member being driven by the telescopic drive, and the other end of the traction member being connected to the roller assembly.

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

[0037] Secondly, the present invention also provides a cleaning device, including a first bracket, a roller assembly, and a roller drive structure as described above, wherein the roller assembly is driven by the roller drive structure.

[0038] Since the cleaning device of this utility model includes the roller drive structure of this utility model and has the same beneficial effects as the roller drive structure, it will not be described in detail here.

[0039] In one alternative implementation, the cleaning equipment is one of a sweeping robot, a mopping robot, a floor scrubbing robot, and a cleaning robot.

[0040] Beneficial effects: The cleaning equipment of this utility model can be one of the following: sweeping machine, mopping machine, floor scrubbing machine and cleaning robot, with a wide range of applications. Attached Figure Description

[0041] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0042] Figure 1 This is an overall schematic diagram of the roller drive structure and roller assembly of this utility model (the roller assembly is in the extended state).

[0043] Figure 2 This is an overall schematic diagram of the roller drive structure and roller assembly of this utility model (the roller assembly is in a retracted state).

[0044] Figure 3 This is an exploded view of the roller assembly in this utility model;

[0045] Figure 4 This is a schematic diagram of the rotating drive component in the drum drive structure of this utility model;

[0046] Figure 5 This is an exploded view of the interaction between the rotating drive component and the drum in the drum drive structure of this utility model;

[0047] Figure 6 This is a schematic diagram of the sleeve and output shaft in the drum drive structure of this utility model;

[0048] Figure 7 This is a schematic diagram of the sleeve and mounting components in the roller drive structure of this utility model. Figure 1 ;

[0049] Figure 8 This is a schematic diagram of the sleeve and mounting components in the roller drive structure of this utility model. Figure 2 ;

[0050] Figure 9 This is a cross-sectional view of a portion of the roller drive structure of this utility model.

[0051] Explanation of reference numerals in the attached figures:

[0052] 1. First support;

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

[0054] 3. Telescopic drive component;

[0055] 4. Pulling components;

[0056] 5. Rotation drive component; 501. Output shaft;

[0057] 6. Adapter parts;

[0058] 7. Installation components;

[0059] 8. Control components;

[0060] 901. Limiting groove; 902. Limiting protrusion; 903. Elastic element;

[0061] 1001. Extension / retraction positioning detection component; 1002. Extension / retraction positioning detection column;

[0062] 11. Cam rod;

[0063] 1201. Lifting position detection component; 1202. Lifting position detection column;

[0064] 13. Buffer components;

[0065] 14. Limiting components;

[0066] 15. Guide ramp;

[0067] 1601, First mating plane; 1602, Second mating plane. Detailed Implementation

[0068] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0069] Currently, the roller assembly of most cleaning equipment is fixedly installed at the bottom of the main body of the equipment, and the roller assembly is placed within the projection range of the main body on the ground, with a certain distance between the outer edge of the roller assembly and the outer edge of the main body. When cleaning corner areas, such as along walls, the main body first comes into contact with the wall, and the roller assembly cannot get close to the wall for cleaning, resulting in long-term dust accumulation at the wall and affecting the cleaning effect of the equipment.

[0070] Based on this, the present invention provides a roller drive mechanism and a cleaning device.

[0071] The following is combined Figures 1-9 This describes embodiments of the roller drive structure and cleaning equipment of this utility model.

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

[0073] This roller-driven structure, under the drive control of the telescopic drive component, allows the roller assembly 2 to extend and retract. When cleaning corner areas such as walls, the force exerted by the second control component on the roller assembly 2 is less than that exerted by the first control component. The first control component causes the roller assembly 2 to extend relative to the first support 1, allowing it to be closer to the corner areas without being affected by the position of the first support 1, achieving "edge cleaning" for effective cleaning of corner areas. This significantly reduces blind spots and greatly improves cleaning efficiency. When cleaning corner areas is no longer needed (i.e., when the roller assembly 2 needs to return to its original position), the force exerted by the second control component on the roller assembly 2 is greater than that exerted by the first control component, causing the roller assembly 2 to retract relative to the first support 1. Through the coordinated operation of the first and second control components, the position of the roller assembly 2 can be adjusted, making it more controllable and its telescopic movement smoother. This roller structure not only provides better cleaning results but also enhances the user experience. In addition, under the drive control of the rotation drive assembly, the roller 202 can rotate to realize the cleaning process of the surface to be cleaned. Moreover, since the adapter 6 can reciprocate along the axial direction of the output shaft 501, the rotation drive assembly will not affect the telescopic movement of the roller assembly 2, thereby realizing the coordination between the rotation 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 both smooth and reliable.

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

[0075] The first support 1 possesses sufficient structural strength to support and mount the roller assembly 2, the rotation drive assembly, and the telescopic drive assembly. Typically, the first support 1 is made of waterproof, corrosion-resistant, and high-strength materials to ensure the overall service life of the roller structure. The first support 1 has a generally elongated, strip-like structure. Figure 1 and Figure 2 Taking a specific perspective, the bottom of the first support 1 faces the surface to be cleaned. Depending on the application scenario of different cleaning equipment, the surface to be cleaned can be the ground, a wall, etc. In this embodiment, the surface to be cleaned is the ground.

[0076] The roller assembly 2 is retractably and movably mounted on the first support 1. The roller assembly 2 is primarily used for cleaning the surface to be cleaned. During operation, the roller assembly 2 directly contacts the surface to be cleaned, thus completing the cleaning process. The roller assembly 2 is located at the bottom of the first support 1 and can retract and move relative to the first support 1; that is, the position of the roller assembly 2 relative to the first support 1 is not fixed and can change. The roller assembly 2 can extend relative to the first support 1. When the roller assembly 2 extends to a preset extended position (fully extended), it is in the extended state. Correspondingly, the roller assembly 2 can retract relative to the first support 1. When the roller assembly 2 retracts to a preset retracted position (fully retracted), it is in the retracted state. In other words, the roller assembly 2 can reciprocate between the corresponding positions of the extended and retracted states; that is, the roller assembly 2 can move from the retracted position to the extended position, and vice versa.

[0077] The roller assembly 2 has a generally elongated structure and includes a second support 201 and a roller 202. The second support 201, also called a telescopic support, is the shell structure of the roller assembly 2. The second support 201 is telescopically connected to the first support 1 and has a certain structural strength to support and mount the roller 202. In addition, the first support 1 can also be equipped with structural components such as a dirt collection tank and a water channel plate. The roller 202 is disposed inside the second support 201 and is the roller mop. In this embodiment, the roller structure is a double roller structure, that is, there are two rollers 202. The roller 202 is disposed on the side of the second support 201 facing the surface to be cleaned. During operation, the roller 202 can roll to clean the surface to be cleaned.

[0078] The second support 201 is also provided with a first connector 204, through which the first control component is connected to the roller assembly 2. Furthermore, the second support 201 is also provided with a second connector 203, through which the second control component is connected to the roller assembly 2. Of course, the roller assembly 2 also has other structures and components common to existing roller assemblies, which will not be elaborated here.

[0079] In this embodiment, the first connector 204 and the second connector 203 are located on both sides of the roller assembly 2, so that the structure on the roller assembly 2 is more balanced and the structure is not too concentrated. When the first control component and the second control component apply force to the roller assembly 2, the extension and retraction movement of the roller assembly 2 can be more stable.

[0080] A rotation drive assembly is mounted on the first bracket 1. The rotation drive assembly drives the roller 202 to rotate, thereby enabling the roller 202 to clean 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 two rollers 202 to drive the two rollers 202 to rotate, and the two rollers 202 can rotate in opposite or the same direction. The third output shaft 501 is connected to a cam rod 11.

[0081] In this embodiment, the roller assembly 2 can also be raised and lowered, and the cam rod 11 is used to realize the raising and lowering movement of the roller assembly 2. Specifically, the rotation drive assembly also includes a gear system, and 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 component 5, which is connected to a gear system. For example, when the rotation drive component 5 rotates forward, it drives the two rollers 202 to rotate in the forward direction. At this time, the one-way bearing operates in the forward direction, and the output shaft 501 connecting the cam rod 11 rotates relative to the cam rod 11. The driving force of the rotation drive component 5 is not transmitted to the cam rod 11, and the rollers 202 are in a natural descending state. When it is necessary to raise the rollers 202, the rotation drive component 5 reverses, driving 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 connecting the cam rod 11 remains stationary relative to the cam rod 11, thereby driving the cam rod 11 to rotate. During the rotation, the cam rod 11 drives the rollers 202 to rise. The rotation drive component 5 is also a lifting drive component.

[0083] The above process enables the roller assembly 2 to rise and fall. When the cleaning equipment returns to the base station, the roller assembly 2 can rise without touching the ground, thereby avoiding secondary contamination of the cleaned ground and allowing the roller assembly to avoid carpets and other items, thus improving the user experience.

[0084] In addition, a lifting position detection column 1602 is provided on the first bracket 1, and a lifting position detection component 1601 is provided at the bottom of the main body of the cleaning equipment. When the lifting position detection column 1602 rises with the roller assembly 2 and triggers the lifting position detection component 1601, the rotation drive component 5 is de-energized. Due to the self-locking force of the rotation drive component 5, the roller 202 remains in the raised state. In this embodiment, the lifting position detection component 1601 is a photoelectric switch.

[0085] Furthermore, a lifting buffer 13 is provided on the upper surface of the first support 1. The lifting buffer 13 can be made of materials with elastic cushioning function such as rubber pads. When the roller 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 roller assembly 2.

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

[0087] like Figure 6 As shown, one cylindrical surface of the output shaft 501 is a non-circular arc surface structure. Correspondingly, one inner wall of the adapter 6 is also a matching non-circular arc surface structure, so that after the adapter 6 is fitted onto the output shaft 501, the output shaft 501 can drive the adapter 6 to rotate together. In this embodiment, one cylindrical surface of the output shaft 501 is a first mating plane 1601, and one inner wall of the adapter 6 is a second mating plane 1602. The shapes of the first mating plane 1601 and the second mating plane 1602 match. When the adapter 6 is fitted onto the output shaft 501, the first mating plane 1601 and the second mating plane 1602 are in contact, and the adapter 6 cannot rotate relative to the output shaft 501; the adapter 6 can only rotate with the output shaft 501. Furthermore, the first mating plane 1601 extends a certain distance along the axial direction of the output shaft 501, allowing the adapter 6 to reciprocate along the axial direction of the output shaft 501.

[0088] A telescopic mechanism is mounted on the first support 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, both of which can apply force to the roller assembly 2 to achieve its telescopic movement. 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, the first control component causes the roller assembly 2 to extend relative to the first support 1. 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, the second control component causes the roller assembly 2 to retract relative to the first support 1.

[0089] In other words, by adjusting the force exerted on the roller assembly 2 by the first control component and the second control component, the roller assembly 2 can be moved to the extended position under the control of the first control component, and the roller assembly 2 can also be moved to the retracted position under the control of the second control component.

[0090] Specifically, the roller assembly 2 is telescopically and movably disposed 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 support 1 faces the surface to be cleaned, and the roller assembly 2 is telescopically and movably disposed at the bottom of the first support 1. 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 support 1 on the ground. The first control component can drive the roller assembly 2 to extend beyond this projection range, and the second control component can drive the roller assembly 2 to retract into this projection range. That is, when the roller assembly 2 is in the retracted state, it is not visible from the top view of the first support 1. When the roller assembly 2 is in the extended state, at least a portion of its structure is outside the first support 1. This roller structure is suitable for cleaning equipment such as sweepers, which simplifies structural design, reduces control difficulty, and facilitates 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 support 1.

[0092] In this embodiment, the setting of the rotation drive component does not affect the extension and retraction process of the telescopic drive component driving the roller assembly 2, so as to achieve the coordinated cooperation of the structure and ensure the performance stability of the cleaning equipment.

[0093] Furthermore, the direction of the force applied by the first control component to the roller assembly 2 is parallel to and does not coincide with the direction of the force applied by the second control component to the roller assembly 2.

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

[0095] When the first control component and the second control component apply force to the first support 1, the direction of the force applied by the first control component to the roller assembly 2 is parallel to and does not coincide with the direction of the force applied by the second control component to the roller assembly 2. This achieves the distributed setting of the first control component and the second control component, making full use of the setting space on the first support 1, and making the roller assembly 2 more evenly stressed. This is beneficial to the stable driving of the telescopic drive component to the roller assembly 2, and makes the telescopic movement of the roller assembly 2 smoother.

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

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

[0098] like Figure 5 As shown, the rotation drive assembly also includes a mounting member 7, which is disposed at one end of the roller 202, thereby connecting the adapter 6 to the roller 202 via the mounting member 7. The mounting member 7 facilitates the connection between the adapter 6 and the roller 202. This rotation drive assembly has a simplified structure and good reliability. The adapter 6 and the mounting member 7 cannot rotate relative to each other, but they can rotate together with the roller 202 and can also extend and retract along the output shaft 501 with the roller 202.

[0099] Furthermore, the adapter 6 is disposed within the mounting component 7, and the adapter 6 and the mounting component 7 are connected by a rotation limiting mechanism.

[0100] The adapter 6 is disposed within the mounting component 7 so that the adapter 6 can be connected to the roller 202 via the mounting component 7. A rotation limiting mechanism is provided between the adapter 6 and the mounting component 7. The adapter 6 and the mounting component 7 are connected by the rotation limiting mechanism so that the adapter 6 and the mounting component 7 will not rotate relative to each other. The adapter 6 and the mounting component 7 can move together along the axial direction of the output shaft 501 to realize the telescopic movement of the roller assembly 2.

[0101] like Figure 9 As shown, the adapter 6 is disposed within the mounting component 7, and most of the structure of the mounting component 7 is located within the end of the roller 202. The mounting component 7 is fixedly connected to the roller 202. The rotation limiting mechanism is used to restrict the relative rotation between the adapter 6 and the mounting component 7. Therefore, the adapter 6 and the mounting component 7 cannot rotate relative to each other, but the adapter 6 and the mounting component 7 can move together along the axial direction of the output shaft 501. That is, the adapter 6 and the mounting component 7 are relatively fixed in the axial direction along the output shaft 501, while the mounting component 7 and the roller 202 are relatively fixed in the axial direction along the output shaft 501. Therefore, the adapter 6 and the roller 202 are relatively fixed in the axial direction along the output shaft 501, thereby realizing the extension and retraction movement of the adapter 6 and the mounting component 7 with the roller 202.

[0102] Furthermore, the rotation limiting mechanism includes a limiting groove 901 and a limiting protrusion 902 that engage with each other. One of the limiting groove 901 and the limiting protrusion 902 is disposed on the inner wall of the mounting member 7, and the other is disposed 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 engage with each other. The limiting groove 901 can be disposed 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 disposed 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 disposed on the inner wall of the mounting member 7, and the limiting protrusion 902 is disposed on the outer wall of the adapter 6. The limiting protrusion 902 is adapted to be inserted into the limiting groove 901 and engage with the limiting groove 901 to achieve rotational limiting between the adapter 6 and the mounting member 7. The number of limiting grooves 901 and limiting protrusions 902 is at least one.

[0104] In other embodiments, the limiting groove 901 can 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-fit ​​between the limiting protrusion 902 and the limiting groove 901 can be achieved.

[0105] Furthermore, at least two limiting grooves 901 and at least two limiting protrusions 902 are 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 at least two limiting protrusions 902 are provided. In this embodiment, four limiting grooves 901 are provided, and the four limiting grooves 901 are spaced apart 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 spaced apart 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 limiting grooves 901 and limiting protrusions 902 may be two, three, five, etc. Furthermore, the number of limiting grooves 901 and limiting protrusions 902 may be the same or different.

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

[0109] The number of limiting grooves 901 and limiting protrusions 902 can be the same or different. To achieve the snap-fit ​​engagement of the limiting grooves 901 and limiting protrusions 902, the number of limiting grooves 901 should be greater than or equal to the number of limiting protrusions 902. In this embodiment, the number of limiting grooves 901 is equal to the number of limiting protrusions 902, and there are four of each type.

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

[0111] Understandably, the more limit grooves 901 and limit protrusions 902 are provided, the stronger the connection between them, and the more reliable the rotation limit between the adapter 6 and the mounting part 7.

[0112] Furthermore, the rotation limiting mechanism also includes an elastic element 903, which is sleeved on the limiting protrusion 902, and the limiting protrusion 902 is engaged in the limiting groove 901 by the elastic element 903.

[0113] The rotation limiting mechanism also includes an elastic element 903. A limiting protrusion 902 protrudes from the outer wall of the adapter 6 and has a columnar structure. The elastic element 903 is sleeved on the limiting protrusion 902 and covers its outer wall. The limiting protrusion 902 is engaged in the limiting groove 901 by the elastic element 903. After entering the limiting groove 901, the elastic element 903 is deformed by the groove wall, reliably engaging the limiting protrusion 902 within the limiting groove 901. The elastic element 903 can be made of elastic materials such as rubber and can also be referred to as a sealing ring.

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

[0115] In this embodiment, both the adapter 6 and the mounting part 7 are made of plastic. Therefore, the limiting protrusion 902 and the limiting groove 901 are also made of plastic. Since the interference fit between plastic parts can cause the mechanism to jam, affecting its operation, in this embodiment, an elastic element 903 is sleeved on the outside of the limiting protrusion 902. The elastic element 903 is interference-fitted with the limiting groove 901. The elastic element 903 can reliably engage the limiting protrusion 902 and the limiting groove 901 through deformation. Furthermore, 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. This improves the adaptability of the structure, facilitates the subsequent installation of the roller 202, and reduces the structural wear of the adapter 6 and the mounting part 7, ensuring their service life.

[0116] Furthermore, both the limiting grooves 901 and the limiting protrusions 902 are provided in even numbers, and the limiting grooves 901 and the limiting protrusions 902 are arranged symmetrically in pairs. The structure and layout of the limiting grooves 901 and the limiting protrusions 902 described above enable more balanced and stable force transmission, thereby improving the reliability of the structure.

[0117] In this embodiment, four limiting grooves 901 and four limiting protrusions 902 are provided, and the four limiting grooves 901 and four limiting protrusions 902 are arranged symmetrically in pairs. This relatively regular shape of the adapter 6 and mounting part 7 makes them easier to manufacture and reduces 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 inside of the mounting part 7, that is, towards the adapter 6. A guide structure is provided at the edge of the opening of the limiting groove 901 so that the limiting protrusion 902 can enter the limiting groove 901 through the guide structure and then engage with the limiting groove 901, which helps to reduce assembly difficulty and improve assembly efficiency.

[0120] In this embodiment, the guide structure is a guide slope 15, which is inclined inward so that the limiting protrusion 902 can enter the limiting groove 901 more accurately and quickly.

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

[0122] The rotation drive 5 is mounted on the first bracket 1. The rotation drive 5 drives the output shaft 501 through a gear system, thereby causing the roller 202 to rotate. A limit member 14 is provided at the end of the output shaft 501 away from the rotation drive 5. The limit member 14 is used to limit the distance that the adapter 6 moves away from the rotation drive 5 along the axial direction of the output shaft 501.

[0123] In this embodiment, the limiting member 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 limiting member 14, it is blocked by the limiting member 14, preventing the adapter 6 from continuing to move away from the rotation drive member 5. Specifically, the limiting member 14 is a limiting pin. The limiting pin protrudes from the surface of the output shaft 501.

[0124] Furthermore, the first control component includes a control element 8, which is disposed on the first support 1, and the control element 8 applies a pulling force to the roller assembly 2 in the extension direction of the roller assembly 2.

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

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

[0127] Specifically, the pulling member 4 is U-shaped and mounted on the first support 1 to fully utilize the space on the first support 1. The pulling member 4 is made of steel wire rope, wound around a winding reel. One end of the pulling member 4 is connected to the output end of the telescopic drive member 3, and the other end is connected to the second connecting member 203. The telescopic drive member 3 provides power so that the second control component can apply force to the roller assembly 2. One end of the pulling member 4 is driven by the telescopic drive member 3, and the other end of the pulling member 4 is connected to the roller assembly 2 via the second connecting member 203. The pulling member 4 is used to pull the roller assembly 2 and, by overcoming the force exerted on the roller assembly 2 by the first control component, drives the roller assembly 2 to retract relative to the first support 1.

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

[0129] like Figures 1-2 As shown, Figure 1 The middle arrow 'a' indicates the direction of extension. Figure 2 The middle arrow b indicates the retraction direction. In this embodiment, the control element 8 is an elastic element. When the roller assembly 2 retracts relative to the first support 1, the control element 8 is in a stretched state. Specifically, the control element 8 is a tension spring. When the telescopic drive element 3 is not working, the roller assembly 2 will remain in its normally extended state under the force of the tension spring.

[0130] One end of the control element 8 is connected to the first support 1, and the other end is connected to the roller assembly 2 via the first connector 204. When the roller assembly 2 retracts relative to the first support 1, the control element 8 is in a stretched state, and the control element 8 can apply a pulling force to the roller assembly 2 in the extension direction. When the pulling member 4 is released, under the pulling force of the control element 8, the roller assembly 2 extends relative to the first support 1 until it reaches the preset extension position. The tension force of the tension spring on the roller assembly 2 varies. When the roller assembly 2 moves toward the preset retracted position, the tension force of the tension spring on the roller assembly 2 gradually increases, while when the roller assembly 2 moves toward the preset extension position, the tension force of the tension spring on the roller assembly 2 gradually decreases, but it is necessary to keep the roller assembly 2 in the preset extension position.

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

[0132] To make the telescopic movement of the roller assembly 2 more stable and reliable, a guide rail mechanism is provided between the first support 1 and the second support 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 set between the first support 1 and the second support 201, which can save the installation space, make the overall structure more compact and reasonable, and at the same time make the roller assembly 2 telescopic movement more stable relative to the first support 1.

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

[0134] When cleaning corner areas such as walls, the force exerted by the second control component on the roller assembly 2 is less than that exerted by the first control component. The first control component causes the roller assembly 2 to extend relative to the first support 1, allowing it to be closer to the corner area without being affected by the position of the first support 1, achieving "edge cleaning." This effectively cleans corner areas, significantly reducing blind spots and greatly improving cleaning performance. When corner cleaning is no longer needed (i.e., when the roller assembly 2 needs to return to its original position), the force exerted by the second control component on the roller assembly 2 is greater than that exerted by the first control component, causing the roller assembly 2 to retract relative to the first support 1. Through the coordinated operation of the first and second control components, the position of the roller assembly 2 can be adjusted, making it more controllable and its extension and retraction smoother. This roller structure not only provides better cleaning results but also enhances the user experience.

[0135] While the roller assembly 2 is telescopically moving, the rotation drive assembly drives the roller 202 to rotate, thereby cleaning the ground. By setting the adapter 6, which is connected to the roller 202 through the mounting part 7, the telescopic movement and rotation of the roller assembly 2 do not affect each other, realizing the synergistic effect of the rotation drive assembly and the telescopic drive assembly, simplifying the mechanism, and ensuring that the telescopic movement and rotation of the roller 202 are both smooth and reliable.

[0136] Of course, cleaning equipment also has other structural components that are present in all existing cleaning equipment, which will not be elaborated here.

[0137] Furthermore, the cleaning equipment is one of the following: a sweeping robot, a mopping robot, a floor scrubbing robot, and a cleaning robot. For example, a sweeping robot, a handheld floor scrubbing robot, and a fully automatic floor scrubbing robot. In this embodiment, the cleaning equipment is a cleaning robot.

[0138] The working process of the cleaning equipment in this embodiment will be described below with reference to the accompanying drawings:

[0139] When the cleaning equipment starts cleaning, it first cleans the edges of the area and then cleans the interior of the area in a bow-shaped pattern. When the telescopic drive 3 rotates forward, it retracts the pull member 4, pulling the second bracket 201 to overcome the tension of the tension spring. When the telescopic positioning detection column 1002 on the second bracket 201 triggers the signal of the telescopic positioning detection device 1001, the telescopic drive 3 stops working. Because the motor itself has a self-locking force, the pull member 4 remains in the tightened state, and the second bracket 201 remains in the retracted state, performing cleaning. This is suitable for cleaning the interior area of ​​the entire machine (not cleaning along the edges).

[0140] When the machine is cleaning along the edges, the telescopic drive 3 is reversed for a certain period of time T1. T1 should be less than the time required for the winding wheel to rotate in the opposite direction to prevent the pulling member 4 from being wound backwards onto the winding wheel after release. The purpose of reversing is to unlock the pulling member 4. During reversal, the telescopic drive 3 loses its locking force on the pulling member 4, and under the force of the tension spring, the second bracket 201 will return to the extended state. This state is suitable for cleaning hard-to-reach corners such as walls, table and chair corners.

[0141] When the machine detects an obstacle in front that will collide with the roller 202, or when returning to the base station, rotating the drive component 5 can raise the second bracket 201 and the roller 202 to avoid collision or secondary contamination of the cleaned ground.

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

Claims

1. A roller drive structure, characterized in that, The cleaning equipment includes a first support (1) and a roller assembly (2), the roller assembly (2) being telescopically and movably disposed at the bottom of the first support (1), the roller assembly (2) including a roller (202), and the roller drive structure including: A rotation drive assembly is disposed on the first bracket (1). The rotation drive assembly includes at least one output shaft (501) and a connector (6). The connector (6) is sleeved on the output shaft (501). The connector (6) rotates with the output shaft (501) and can reciprocate along the axial direction of the output shaft (501). The connector (6) is connected to the roller (202). A telescopic drive assembly is disposed on the first bracket (1). The telescopic drive assembly includes a first control assembly and a second control assembly for applying force to the roller assembly (2). When the force of the second control assembly on the roller assembly (2) is less than the force of the first control assembly on the roller assembly (2), the first control assembly drives the roller assembly (2) to extend relative to the first bracket (1). When the force of the second control assembly on the roller assembly (2) is greater than the force of the first control assembly on the roller assembly (2), the second control assembly drives the roller assembly (2) to retract relative to the first bracket (1).

2. The roller drive structure according to claim 1, characterized in that, The direction of the force applied by the first control component to the roller assembly (2) is parallel to and does not coincide with the direction of the force applied by the second control component to the roller assembly (2).

3. The roller drive structure according to claim 1, characterized in that, The rotation drive assembly also includes a mounting component (7), which is disposed at the end of the roller (202), and the adapter (6) is connected to the roller (202) through the mounting component (7).

4. The roller drive structure according to claim 3, characterized in that, The adapter (6) is disposed within the mounting component (7), and the adapter (6) and the mounting component (7) are connected by a rotation limiting mechanism.

5. The roller drive structure according to claim 4, characterized in that, The rotation limiting mechanism includes a limiting groove (901) and a limiting protrusion (902) that engage with each other. One of the limiting groove (901) and the limiting protrusion (902) is disposed on the inner wall of the mounting part (7), and the other is disposed on the outer wall of the adapter (6).

6. The roller drive structure according to claim 5, characterized in that, The rotation limiting mechanism also includes an elastic element (903), which is sleeved on the limiting protrusion (902), and the limiting protrusion (902) is engaged in the limiting groove (901) by the elastic element (903).

7. The roller drive structure according to claim 6, characterized in that, The elastic element (903) is interference-fitted with the limiting groove (901), and there is a gap between the limiting protrusion (902) and the limiting groove (901).

8. The roller drive structure according to claim 5, characterized in that, Both the limiting groove (901) and the limiting protrusion (902) are provided in at least two. At least two of the limiting grooves (901) are circumferentially spaced around one of the adapter (6) and the mounting member (7), and at least two of the limiting grooves (901) are circumferentially spaced around the other of the adapter (6) and the mounting member (7).

9. The roller drive 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 roller drive structure according to claim 8, characterized in that, The limiting groove (901) and the limiting protrusion (902) are both provided in an even number, and the limiting groove (901) is arranged symmetrically in pairs, and the limiting protrusion (902) is arranged symmetrically in pairs.

11. The roller drive 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 roller drive structure according to claim 1, characterized in that, The rotation drive assembly further includes a rotation drive member (5), which drives the output shaft (501). A limit member (14) is provided at one end of the output shaft (501) away from the rotation drive member (5). The limit member (14) is used to limit the distance by which the adapter (6) moves away from the rotation drive member (5) along the axial direction of the output shaft (501).

13. The roller drive structure according to any one of claims 1-12, characterized in that, The first control component includes a control element (8) disposed on the first bracket (1), and the control element (8) applies a pulling force to the roller assembly (2) in the extension direction of the roller assembly (2).

14. The roller drive structure according to claim 13, characterized in that, The control element (8) is an elastic element. When the roller assembly retracts relative to the first bracket (1), the control element (8) is in a stretched state.

15. The roller drive structure according to claim 13, characterized in that, The second control component includes a telescopic drive (3) and a traction component (4). The telescopic drive (3) is disposed on the first bracket (1). One end of the traction component (4) is driven by the telescopic drive (3), and the other end of the traction component (4) is connected to the roller assembly (2).

16. A cleaning device, characterized in that, It includes a first support (1), a roller assembly (2), and a roller drive structure as described in any one of claims 1-15, wherein the roller assembly (2) is driven by the roller drive structure.

17. The cleaning equipment according to claim 16, characterized in that, The cleaning equipment is one of the following: sweeping machine, mopping machine, floor scrubbing machine, and cleaning robot.

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