Rolling brush assembly, chassis structure, cleaning equipment and cleaning system

Abstract

The invention provides a rolling brush assembly, a chassis structure, cleaning equipment and a cleaning system, and relates to the technical field of cleaning. The rolling brush assembly comprises an upper cover, a rolling brush and a shielding piece. The upper cover is provided with a containing cavity facing the to-be-cleaned face, and a first airflow opening is formed between the lower end face, facing the to-be-cleaned face, of the upper cover and the to-be-cleaned face. Part of the rolling brush is located in the containing cavity, and the rolling brush can move relative to the upper cover to have a high-position state and a low-position state. The shielding piece is arranged on the upper cover and can move relative to the upper cover so as to have an ascending position and a descending position. When the shielding piece is located at the descending position, the lower end face of the shielding piece exceeds the lower end face of the upper cover, and part of the shielding piece shields part of the first airflow opening. A second airflow opening is formed between the lower end face of the shielding piece and the to-be-cleaned face. According to the rolling brush assembly, the problem that the cleaning effect on the to-be-cleaned surface of the carpet is poor, and the user experience is affected can be solved.

Description

Technical Field

[0001] The present application relates to the field of cleaning technology, and in particular to a roller brush assembly, a chassis structure, a cleaning device and a cleaning system. Background Art

[0002] Cleaning equipment is a common intelligent cleaning appliance, for example, a sweeping robot, an automatic sweeper, etc. Cleaning equipment can perform deep cleaning such as vacuuming floors, tiles, carpets, etc.

[0003] The surface of the carpet is soft, so dirt such as dust and hair can easily embed deeply into the carpet. In the related art, when the cleaning device performs the cleaning task, the general suction force can only achieve light cleaning of the dirt on the surface of the carpet, and it is difficult to achieve deep cleaning of the dirt inside the carpet, which has a poor cleaning effect on the carpet and affects the user experience. Summary of the invention

[0004] The present application provides a roller brush assembly, a chassis structure, a cleaning device and a cleaning system, which can solve the problem of poor cleaning effect on the surface of the carpet to be cleaned, affecting the user experience.

[0005] In a first aspect, the present application provides a roller brush assembly, comprising:

[0006] An upper cover, wherein the upper cover has a receiving cavity facing the surface to be cleaned, and a first air flow opening is formed between the lower end surface of the upper cover facing the surface to be cleaned and the surface to be cleaned;

[0007] A roller brush, part of which is located in the accommodating cavity, and the roller brush can move relative to the upper cover to have a high position and a low position;

[0008] A shielding member, wherein the shielding member is arranged on the upper cover, and the shielding member can move relative to the upper cover to have an ascending position and a descending position. When the shielding member is located at the descending position, the lower end surface of the shielding member protrudes from the lower end surface of the upper cover, and part of the shielding member blocks part of the first air flow opening, and a second air flow opening is formed between the lower end surface of the shielding member and the surface to be cleaned.

[0009] The roller brush assembly provided by the present application has a shielding member that can slide relative to the upper cover and has an ascending position and a descending position, so that the roller brush assembly can have two cleaning states. When the shielding member is in the ascending position, dirt on the surface to be cleaned can be sucked out through the first air flow opening. When the shielding member is in the descending position, the lower end surface of the shielding member can partially block the first air flow opening to form a second air flow opening. At this time, dirt on the surface to be cleaned can be sucked out through the second air flow opening.

[0010] Since part of the first air flow opening is blocked to form the second air flow opening, the opening of the second air flow opening is smaller than the opening of the first air flow opening. Therefore, when the shielding member is in the lowered position, the airtightness of the roller brush assembly at the second air flow opening is higher than the airtightness of the roller brush assembly at the first air flow opening when the shielding member is in the raised position. When the shielding member is in the lowered position, a stronger suction effect can be exerted on the surface to be cleaned.

[0011] Therefore, when cleaning hard surfaces to be cleaned, such as floors and tiles, since dirt such as dust and hair usually float on the surface of the surface to be cleaned, the shielding member can be placed in an ascending position to suction and clean the dirt on the surface to be cleaned through the first air flow opening. When cleaning soft surfaces to be cleaned, such as carpets, since dirt such as dust and hair easily embeds deeply inside the surface to be cleaned, the shielding member can be placed in a descending position to suction and clean the surface to be cleaned deeply through the second air flow opening.

[0012] Furthermore, the roller brush of the embodiment of the present application can also move relative to the upper cover to have a high position and a low position. When the roller brush is in the low position, it can contact with the surface to be cleaned to clean the surface. When cleaning a soft surface to be cleaned such as a carpet or encountering an obstacle, the roller brush can be placed in a high position. The contact depth between the roller brush and the surface to be cleaned when it is in the high position is less than the contact depth between the roller brush and the surface to be cleaned when it is in the low position. Alternatively, when the roller brush is in the high position, there can be a distance between the roller brush and the surface to be cleaned.

[0013] Specifically, when cleaning a soft surface to be cleaned, such as a carpet, the roller brush can be controlled to be in a high position to prevent the roller brush from getting entangled with the carpet's fluff, thereby damaging the carpet or the roller brush. Alternatively, when encountering obstacles such as a wire harness or a threshold, the roller brush can be controlled to be in a high position to prevent the wire harness from getting entangled with the roller brush or colliding with it, thereby affecting the normal operation of the cleaning device.

[0014] Therefore, in the embodiment of the present application, by moving the shielding member relative to the upper cover and the roller brush relative to the upper cover, the cleaning device can be applied to different application scenarios to reduce the possibility of replacing accessories such as the roller brush assembly, which makes the cleaning process cumbersome and affects the user experience.

[0015] According to one embodiment of the present application, the roller brush assembly also includes a power source, which is connected to the upper cover, and is used to drive the roller brush to move between the high position and the low position, and the power source is used to drive the shielding member to move between the raised position and the lowered position.

[0016] In the embodiment of the present application, the movement of the roller brush and the movement of the shielding member can be achieved by a power source. On the one hand, the structure of the roller brush assembly can be made compact, which is conducive to simplifying the layout of the parts on the roller brush assembly. In addition, the cost of the roller brush assembly can be saved, which is conducive to reducing the product cost of the cleaning device.

[0017] In a second aspect, the present application provides a roller brush assembly, comprising:

[0018] An upper cover, wherein the upper cover has a receiving cavity facing the surface to be cleaned, and a first air flow opening is formed between the lower end surface of the upper cover facing the surface to be cleaned and the surface to be cleaned;

[0019] A roller brush, part of which is located in the accommodating cavity, and the roller brush is used to clean the surface to be cleaned;

[0020] a shielding member, the shielding member is arranged on the upper cover, the shielding member can move relative to the upper cover to have an ascending position and a descending position, when the shielding member is in the descending position, the lower end surface of the shielding member exceeds the lower end surface of the upper cover, part of the shielding member shields part of the first air flow opening, and a second air flow opening is formed between the lower end surface of the shielding member and the surface to be cleaned;

[0021] a first driving assembly, the first driving assembly being disposed on the upper cover, and the first driving assembly being used to drive the shielding member to move between the raised position and the lowered position;

[0022] A second driving assembly, the second driving assembly is arranged on the upper cover, and the second driving assembly is used to make the roller brush have a high position state and a low position state, and the roller brush moves between the high position state and the low position state;

[0023] Wherein, the first drive assembly and the second drive assembly move in coordination.

[0024] The roller brush assembly provided in the present application can be used to change the size of the suction port formed between the roller brush assembly and the surface to be cleaned (that is, the opening of the first air flow port is different from the opening of the second air flow port) by setting a covering member with an ascending position and a descending position. This can change the intensity of the negative pressure environment formed between the roller brush assembly and the surface to be cleaned, and thus different types of surfaces to be cleaned can be cleaned, which is beneficial to improving the applicability of the cleaning equipment and ensuring that different types of surfaces to be cleaned can have a better cleaning effect.

[0025] Among them, improving the applicability of the cleaning device may mean that different types of surfaces to be cleaned can be cleaned by using one cleaning device and a set of roller brush assemblies without replacing the cleaning device or the roller brush assembly, which is conducive to improving user experience.

[0026] Furthermore, the roller brush can move between a high position and a low position. When the surface of the surface to be cleaned is uneven, the roller brush can be controlled to be in different positions to meet the contact depth with the surface to be cleaned, thereby ensuring the cleaning effect.

[0027] Specifically, when part of the surface to be cleaned is convex, the roller brush can be controlled to be lifted up by a corresponding distance to reduce the possibility of excessive contact between the roller brush and the surface to be cleaned, which may damage the roller brush or the surface to be cleaned. When part of the surface to be cleaned is concave, the roller brush can be controlled to be lowered by a corresponding distance so that the roller brush and the surface to be cleaned can maintain contact, thereby ensuring the cleaning effect of the concave part of the surface to be cleaned.

[0028] The first drive assembly can be used to drive the shielding member to rise or fall to reach the rising position or the falling position. The second drive assembly can be used to make the roller brush rise or fall to reach the high position state and the low position state. By setting the first drive assembly and the second drive assembly to move in coordination, the shielding member and the roller brush can be linked, and the structure of the roller brush assembly can be made compact.

[0029] It should be noted that the coordinated movement of the first drive assembly and the second drive assembly may mean that the movement of the first drive assembly may cause the second drive assembly to move, thereby causing the roller brush to move. Alternatively, the movement of the second drive assembly may cause the first drive assembly to move, thereby causing the shielding member to move, which is not specifically limited in the embodiments of the present application.

[0030] For example, when the cleaning device is walking on the surface to be cleaned but not cleaning, the roller brush can be in a high position and the shielding member can be in an ascending position. When the cleaning device is in a cleaning mode, the roller brush is in a low position. Depending on different application scenarios, the shielding member can be in an ascending position or a descending position.

[0031] Specifically, when cleaning hard surfaces to be cleaned, such as floors and tiles, the shielding member can be placed in the raised position to suction and clean the dirt on the surface to be cleaned through the first air flow opening. When cleaning soft surfaces to be cleaned, such as carpets, the shielding member can be placed in the lowered position to deeply suction and clean the surface to be cleaned through the second air flow opening. Since part of the first air flow opening is blocked to form the second air flow opening, the opening of the second air flow opening is smaller than the opening of the first air flow opening. Therefore, when the shielding member is in the lowered position, the airtightness of the roller brush assembly at the second air flow opening is higher than the airtightness of the roller brush assembly at the first air flow opening when the shielding member is in the raised position. When the shielding member is in the lowered position, it can have a stronger cleaning effect on the surface to be cleaned, so it can be used for surfaces to be cleaned where dirt is easily deeply embedded, such as carpets.

[0032] It is easy to understand that in the embodiment of the present application, by adjusting the movement of the covering member between the raised position and the lowered position, the suction force between the roller brush assembly and the surface to be cleaned can be adjusted to be suitable for cleaning different types of surfaces to be cleaned. Therefore, the power of a power unit such as a blower or fan used to provide suction force can remain unchanged, which is beneficial to saving energy loss.

[0033] It should be noted that the first drive assembly can also be used to drive the shielding member to stop at any position between the raised position and the lowered position, so that a second air flow opening of different sizes is formed between the lower end surface of the shielding member and the surface to be cleaned, thereby enabling different suction forces to be exerted between the roller brush assembly and the surface to be cleaned, so as to be suitable for more cleaning scenarios.

[0034] In addition, it should be noted that the second drive component can also be used to drive the roller brush to stop at any position between the high position and the low position, so that the roller brush can rise or fall different distances, thereby ensuring the contact depth between the roller brush and the surface to be cleaned in different cleaning scenarios.

[0035] According to one embodiment of the present application, the roller brush assembly has an initial mode, a first cleaning mode, and a second cleaning mode;

[0036] When the roller brush assembly is in the initial mode, the roller brush is in the high position, and the shielding member is in the raised position;

[0037] When the roller brush assembly is in the first cleaning mode, the roller brush is in the low position, the shielding member is in the raised position, and the external airflow enters the upper cover through the first airflow port;

[0038] When the roller brush assembly is in the second cleaning mode, the roller brush is in a low position, the shielding member is located in the lowered position, and external airflow enters the upper cover through the second airflow port.

[0039] In the embodiment of the present application, through the coordinated movement of the first drive assembly and the second drive assembly, the roller brush assembly can have an initial mode, a first cleaning mode and a second cleaning mode, thereby satisfying different application scenarios.

[0040] When the cleaning device moves to the position to be cleaned of the surface to be cleaned, the cleaning device may not start cleaning the surface to be cleaned temporarily, and the roller brush assembly may be in the initial mode. At this time, the roller brush may be in a high position and the shielding member may be in an ascending position, thereby reducing the possibility of the roller brush or the shielding member being entangled or colliding with obstacles on the surface to be cleaned during the movement of the cleaning device, and avoiding the possibility of the roller brush contacting with the surface to be cleaned on the walking path, which may cause the roller brush to be dirty before reaching the position to be cleaned, thereby affecting the cleaning effect.

[0041] When the cleaning device moves to the cleaning position of the surface to be cleaned, the roller brush assembly can start cleaning. When cleaning hard surfaces to be cleaned such as floors and tiles, the roller brush assembly can be in the first cleaning mode. The second drive assembly can lower the roller brush to a low position so that the roller brush is in contact with the surface to be cleaned. The first drive assembly can keep the shielding member in the raised position. During the cleaning process, a negative pressure environment is generated in the cavity of the upper cover. Under the action of negative pressure, the airflow outside the roller brush assembly can suck the dirt on the surface to be cleaned into the upper cover through the first air flow port, and enter the dust box through the roller brush.

[0042] When cleaning soft surfaces to be cleaned, such as carpets, it is necessary to increase the suction effect on the surface to be cleaned because dirt is easily deeply embedded in the surface to be cleaned. At this time, the roller brush assembly can be placed in the second cleaning mode. The second drive can drive the roller brush to descend to a low position so that the roller brush is in contact with the surface to be cleaned. The first drive assembly can drive the shielding member to descend to a lowered position. The shielding member can block part of the first air flow opening to form a second air flow opening, thereby increasing the negative pressure at the second air flow opening. During the cleaning process, the dirt on the surface to be cleaned can be strongly sucked to deeply clean the surface to be cleaned.

[0043] According to one embodiment of the present application, the suction force of the external airflow through the second airflow opening is greater than the suction force through the first airflow opening.

[0044] In the embodiment of the present application, a first air flow opening is formed between the lower end surface of the upper cover and the surface to be cleaned. When the shielding member is in the lowered position, the lower end surface of the shielding member exceeds the lower end surface of the upper cover. At this time, a second air flow opening is formed between the lower end surface of the shielding member and the surface to be cleaned. In other words, the shielding member can block part of the first air flow opening to form the second air flow opening, and therefore, the size of the first air flow opening is larger than the size of the second air flow opening.

[0045] It is easy to understand that the smaller the size of the second air flow opening, the better the sealing performance between the upper cover and the surface to be cleaned. Therefore, the suction force of the upper cover at the second air flow opening is greater than the suction force of the upper cover at the first air flow opening when the shielding member is in the raised position. By generating a stronger suction force at the second air flow opening, the ability to carry dirt on the surface to be cleaned can be improved, so that dirt such as hair and dust deeply embedded in the carpet can be sucked into the dust box.

[0046] It is easy to understand that the suction force of the roller brush assembly when it is in the second cleaning mode is greater than the suction force of the roller brush assembly when it is in the first cleaning mode. Therefore, when deep cleaning is required, the roller brush assembly can be set to the second cleaning mode.

[0047] According to one embodiment of the present application, along the height direction of the roller brush assembly, the size of the second air flow opening is smaller than the size of the first air flow opening.

[0048] In the embodiment of the present application, when the shielding member is in the lowered position, the distance between the lower end surface of the shielding member facing the surface to be cleaned and the surface to be cleaned can be smaller than the distance between the lower end surface of the upper cover and the surface to be cleaned. Therefore, on the one hand, the shielding member can increase the sealing between the roller brush assembly and the surface to be cleaned, so as to increase the internal and external pressure difference of the upper cover at the second air flow port, so as to improve the suction force of the dirt on the surface of the carpet to be cleaned. On the other hand, the shielding member can block the airflow to a certain extent, so that the airflow can flow more between the roller brush and the surface to be cleaned, thereby improving the suction force of the dirt on the surface to be cleaned.

[0049] According to an embodiment of the present application, the first drive assembly includes a first adapter, the first adapter is connected to the shielding member, the second drive assembly includes a second adapter, the second adapter is connected to the roller brush, and the first adapter moves in coordination with the second adapter;

[0050] The first adapter moves to drive the second adapter to move, or the first adapter moves to provide movement space for the second adapter.

[0051] In the embodiment of the present application, the coordinated movement of the first adapter and the second adapter means that the driving force for the movement of the second adapter can come from the first adapter. In other words, the movement of the first adapter can drive the second adapter to move synchronously. Alternatively, the driving force for the movement of the second adapter can also come from other structures. For example, after the first rotating member moves a certain distance, it can provide movement space for the second rotating member, so that the second rotating member can move between a high position and a low position under the action of the roller brush itself or other structures.

[0052] According to one embodiment of the present application, one of the first adapter and the second adapter is provided with an annular slide having a first limit end and a second limit end, and the other of the first adapter and the second adapter is provided with a matching protrusion, and the matching protrusion can slide in the annular slide.

[0053] In the embodiment of the present application, the forward or reverse rotation of the first adapter can realize the raising or lowering of the shielding member. The motion trajectory of the first adapter is arc-shaped. The raising and lowering of the shielding member in the height direction of the roller brush assembly can be realized by occupying a smaller internal space on the roller brush assembly. The arc-shaped motion trajectory can have the effect of saving space.

[0054] Similarly, the forward or reverse rotation of the second adapter can realize the rise or fall of the roller brush. The motion trajectory of the second adapter is arc-shaped. The lifting and lowering of the roller brush can be realized by occupying a smaller internal space on the roller brush assembly.

[0055] The rotation of the first adapter can drive the shielding member to switch between the raised position and the lowered position, and the rotation of the first adapter can also cause the second adapter to rotate, so that the rotation of the second adapter can cause the roller brush to move between the high position state and the low position state. Therefore, the relative rotation of the first adapter and the second adapter can realize the linkage between the shielding member and the roller brush.

[0056] In some examples, the first adapter may be provided with a matching protrusion, the second adapter may be provided with an annular slideway, or the first adapter may be provided with an annular slideway, and the second adapter may be provided with a matching protrusion, which is not limited in the embodiments of the present application.

[0057] For example, in the embodiment of the present application, an annular slide is provided on the first adapter and a matching protrusion is provided on the second adapter. When the roller brush assembly is in the initial mode, the matching protrusion is connected to the first limit end of the annular slide. The matching protrusion and the first limit end can have a relative force so that the matching protrusion can remain stationary in the annular slide. The first adapter and the second adapter are relatively stationary. The shielding member can be maintained in the raised position, and the roller brush can be maintained in the high position.

[0058] Since the roller brush needs to be in a low position during the cleaning process of the cleaning device, the roller brush can always have a downward movement trend in the initial mode to facilitate the roller brush assembly to switch from the initial mode to the first cleaning mode or the second cleaning mode. The downward movement trend of the roller brush can come from the gravity of the roller brush. Under the gravity of the roller brush, the mating protrusion and the first limit end can maintain contact.

[0059] When the roller brush assembly starts the first cleaning mode, for example, when cleaning the floor, tiles and other surfaces to be cleaned, the roller brush needs to be lowered, and the shielding member can remain in the raised position. At this time, the first adapter can be controlled to rotate counterclockwise. The first limit end of the annular slide on the first adapter rotates in a direction away from the mating protrusion. Through the movement of the first adapter, the annular slide can provide a movable space for the mating protrusion. At this time, the mating protrusion is no longer abutted by the first limit end, and the mating protrusion can rotate counterclockwise under the action of the gravity of the roller brush, so that the roller brush can be lowered to reach a low position and clean the surface to be cleaned.

[0060] It should be noted that when the roller brush reaches the low position, the roller brush contacts the surface to be cleaned, so the roller brush will not continue to descend. In other words, the mating protrusion will not continue to rotate counterclockwise. At this time, the mating protrusion and the first limit end can be connected or have a spacing, which is not limited in the embodiment of the present application.

[0061] In addition, it should be noted that in the first cleaning mode, the counterclockwise rotation of the first adapter is mainly used to provide a rotatable space for the mating protrusion so that the roller brush can be lowered. The first adapter will not cause the shielding member to descend within this stroke.

[0062] When the roller brush assembly switches from the first cleaning mode to the second cleaning mode, for example, when the carpet waiting to be cleaned needs to be cleaned, the roller brush can remain lowered and cause the shielding member to move downward to the lowered position. At this time, the first adapter can be controlled to continue to rotate counterclockwise. The first adapter can drive the shielding member downward to the lowered position.

[0063] According to one embodiment of the present application, the first driving assembly includes a first elastic member, the first elastic member connects the first adapter and the shielding member, and the first adapter drives the first elastic member to deform so as to drive the shielding member to rise to reach the raised position.

[0064] In the embodiment of the present application, the first elastic member can provide a pulling force for the shielding member, so that when the roller brush assembly is in the initial mode, the shielding member can move in the direction of the raised position and remain in the raised position. When the shielding member moves in the direction of the raised position, the first elastic member can gradually produce elastic deformation. When the shielding member is in the raised position, the elastic deformation produced by the first elastic member is the largest, so that the shielding member can be maintained in the raised position.

[0065] When cleaning the surface of the carpet to be cleaned, it is necessary to lower the shielding member to increase the suction force on the surface to be cleaned. The roller brush assembly can start the second cleaning mode. At this time, the first adapter can be controlled to rotate counterclockwise. Part of the counterclockwise rotation stroke of the first adapter can be used to provide a rotatable space for the second adapter to place the roller brush in a low position. As the first adapter continues to rotate counterclockwise, the first elastic member can gradually release the pulling force on the shielding member. When the pulling force of the first elastic member on the shielding member is 0, the shielding member can reach the lowered position under the action of its own gravity.

[0066] According to an embodiment of the present application, the first driving assembly further includes a second elastic member, one end of the second elastic member is connected to the shielding member, the other end of the second elastic member is connected to the upper cover, and the second elastic member has a first deformation amount and a second deformation amount;

[0067] When the shielding member is in the ascending position, the second elastic member has the first deformation amount, and when the shielding member is in the descending position, the second elastic member has the second deformation amount, and the first deformation amount is greater than the second deformation amount.

[0068] In the embodiment of the present application, the second elastic member can be used to drive the shielding member downward to reach the descending position. Therefore, the shielding member can quickly reach the descending position under the action of its own gravity and the second elastic member, which is conducive to improving the smoothness of the shielding member during the descent process.

[0069] Therefore, the first elastic member can be used to provide an upward force for the shielding member, and the second elastic member can be used to provide a downward force for the shielding member. Specifically, when the shielding member is in the raised position, since the first elastic member can provide a pulling force to the shielding member to keep the shielding member in the raised position, the pulling force of the first elastic member is greater than or equal to the sum of the elastic force of the second elastic member and the gravity of the shielding member. At this time, the second elastic member generates a first deformation amount between the upper cover and the shielding member to accumulate elastic potential energy.

[0070] When the roller brush assembly is in the first cleaning mode, the roller brush can be in a descending state by rotating the first adapter counterclockwise and cooperating with the movement of the second adapter. In this process, the tension of the first elastic member can be gradually released, and the tension of the first elastic member gradually decreases. However, the first elastic member can still keep the shielding member in the ascending position.

[0071] When the first adapter continues to rotate counterclockwise, the roller brush assembly switches from the first cleaning mode to the second cleaning mode. At this time, the tension of the first elastic member continues to decrease. When the tension of the first elastic member is less than the sum of the elastic force of the second elastic member and the gravity of the shielding member, the second elastic member can release elastic potential energy to drive the shielding member to move in the direction of the lowered position.

[0072] Correspondingly, when the shielding member needs to be lifted, the roller brush assembly can switch from the second cleaning mode to the first cleaning mode. At this time, the first adapter can be controlled to rotate clockwise so that the first elastic member gradually generates a pulling force. When the pulling force of the first elastic member can overcome the gravity of the shielding member and the elastic force of the second elastic member, the first elastic member can make the shielding member move in the direction of the raised position until it reaches the raised position.

[0073] It should be noted that, during the process of switching the roller brush assembly from the second cleaning mode to the first cleaning mode, the clockwise rotation of the first adapter will not affect the second adapter. The second adapter can remain stationary so that the roller brush remains in a low position.

[0074] When the shielding member is in the raised position and the roller brush needs to be lifted, the roller brush assembly can be switched from the first cleaning mode to the initial mode. At this time, the first adapter can be controlled to continue to rotate clockwise. The clockwise rotation of the first adapter can make the annular slide on the first adapter gradually approach the matching protrusion on the second adapter. When the first limit end of the annular slide is connected to the matching protrusion, the first adapter continues to rotate clockwise to provide a driving force for the second adapter, so that the second adapter can drive the roller brush upward to reach a high position.

[0075] According to one embodiment of the present application, when the elastic force of the first elastic member is greater than the sum of the elastic force of the second elastic member and the gravity of the shielding member, the first elastic member causes the shielding member to move toward the ascending position; when the elastic force of the second elastic member is greater than the elastic force of the first elastic member, the second elastic member causes the shielding member to move toward the descending position.

[0076] In the embodiment of the present application, the first elastic member can be used to provide an upward force for the shielding member, and the second elastic member can be used to provide a downward force for the shielding member. Therefore, through the mutual cooperation of the first elastic member and the second elastic member, the shielding member can move between the upward position and the downward position.

[0077] Specifically, when the elastic force of the first elastic member is greater than the elastic force of the second elastic member, the shielding member can move toward the ascending position under the action of the elastic force of the first elastic member. When the elastic force of the first elastic member is less than the elastic force of the second elastic member, the shielding member can move toward the descending position under the action of the elastic force of the second elastic member.

[0078] According to one embodiment of the present application, the shielding member is slidably connected to the upper cover. One of the shielding member and the upper cover may be provided with a limiting slide groove. The other of the shielding member and the upper cover may be provided with a limiting protrusion that can slide in the limiting slide groove. When the shielding member slides relative to the upper cover, the limiting protrusion and the limiting slide groove may cooperate with each other, so that the upper cover can move along the path of the limiting slide groove to maintain the stability of the upper cover during movement.

[0079] According to an embodiment of the present application, the first elastic member is a tension spring; and / or the second elastic member is a compression spring.

[0080] According to one embodiment of the present application, the first drive assembly also includes a first transmission member, one end of the first transmission member is connected to the first adapter member, the other end of the first transmission member is connected to the first elastic member, and the first transmission member is tightened or extended relative to the first adapter member to drive the first elastic member to deform or reset.

[0081] In the embodiment of the present application, the rotation of the first adapter can transmit power through the first transmission member. When the first transmission member is tightened on the first adapter, the first elastic member can be deformed, and the shielding member can maintain the raised position or move in the direction of the raised position. When at least part of the first transmission member is released from the first adapter, the first elastic member can be reset. The shielding member can move to the lowered position.

[0082] Specifically, in the initial mode of the roller brush assembly, the length of the first transmission member wound around the first adapter is relatively large, so that the first elastic member exerts a pulling force on the shielding member, so that the shielding member can be kept in the raised position. During the process of switching the roller brush assembly from the initial mode to the first cleaning mode or the second cleaning mode, part of the first transmission member can be released by rotating the first adapter counterclockwise, and the length of the first transmission member wound around the first adapter is reduced to gradually release the elastic force (pulling force) of the first elastic member. When the elastic force of the first elastic member is less than the elastic force of the second elastic member, the shielding member can be moved to the lowered position.

[0083] When the roller brush assembly switches from the second cleaning mode to the first cleaning mode, the first adapter can rotate clockwise to tighten part of the first transmission member so that the length of the first transmission member wound around the first adapter increases. The first transmission member can provide a lifting force to the shielding member through the first elastic member so that the shielding member has an upward movement tendency. When the elastic force of the first elastic member on the shielding member is greater than the sum of the elastic force of the second elastic member on the shielding member and the gravity of the shielding member, the first elastic member can pull the shielding member upward and reach the raised position.

[0084] According to an embodiment of the present application, the second driving assembly further includes a second transmission member, one end of the second transmission member is connected to the second adapter member, and the other end of the second transmission member is connected to the roller brush;

[0085] The second transmission member is tightened or extended relative to the second adapter member to drive the roller brush to be in the high position state or the low position state.

[0086] In the embodiment of the present application, the second adapter moves and power can be transmitted through the second transmission member. Part of the second transmission member can be arranged around the second adapter. The second adapter rotates clockwise or counterclockwise to tighten or extend the second transmission member relative to the second adapter, so that the roller brush can rise to a high position or fall to a low position.

[0087] Specifically, when the second adapter rotates counterclockwise, part of the second transmission member can be released to extend the second transmission member relative to the second adapter to gradually lower the roller brush to a low position. When the second adapter rotates clockwise, part of the second adapter can be tightened to tighten the second transmission member relative to the second adapter to pull the roller brush up to a high position.

[0088] According to one embodiment of the present application, the annular slide is located at the first adapter, and the movement stroke of the first adapter is at least: the sum of the movement distance of the roller brush in the high position and the low position, and the movement distance of the shielding member in the rising position and the falling position.

[0089] In the embodiment of the present application, during the process of the roller brush assembly switching from the initial mode to the first cleaning mode, part of the travel of the counterclockwise rotation of the first adapter can be used to provide a movable space for the second adapter, so that the roller brush can move between the high position and the low position. Therefore, the movement stroke of the first adapter in this section is equal to the movement distance of the roller brush between the high position and the low position. During the process of the roller brush assembly switching from the first cleaning mode to the second cleaning mode, part of the travel of the counterclockwise rotation of the first adapter is used to move the shielding member between the raised position and the lowered position. Therefore, the movement stroke of the first adapter in this section is equal to the movement distance of the shielding member between the raised position and the lowered position.

[0090] In summary, the movement stroke of the first adapter is at least the sum of the maximum movement stroke of the roller brush and the maximum movement stroke of the shielding member.

[0091] According to one embodiment of the present application, it also includes a power source, the first drive component and the second drive component share the same power source, and one of the first drive component and the second drive component moves synchronously with the power source.

[0092] In the embodiment of the present application, the first drive assembly and the second drive assembly move in coordination. Therefore, when one of the first drive assembly and the second drive assembly is connected to a power source, the movement of the other of the first drive assembly and the second drive assembly can be realized.

[0093] It is easy to understand that since the first drive assembly and the second drive assembly can share a power source, the structure of the roller brush assembly can be made compact, which is conducive to simplifying the layout of the components on the roller brush assembly. In addition, the cost of the roller brush assembly can be saved, which is conducive to reducing the product cost of the cleaning device.

[0094] According to an embodiment of the present application, the first adapter comprises a connected adapter disc and a limit disc, and the adapter disc is connected to the power source;

[0095] Along the axial direction of the adapter disc, the second adapter is located between the adapter disc and the limiting disc.

[0096] In the embodiment of the present application, the adapter disc can be used to be directly connected to the power source. Along the axial direction of the adapter disc, the second adapter can be located between the adapter disc and the limiting disc. The limiting disc can be used to prevent the second adapter from being separated from the first adapter, resulting in the inability to cooperate and transmit between the two, thereby affecting the possibility of movement of the shielding member and the roller brush.

[0097] In a third aspect, the present application provides a chassis structure, which includes a chassis body and a roller brush assembly in any of the above embodiments. The roller brush assembly may be located at the bottom of the chassis body.

[0098] In a fourth aspect, the present application provides a cleaning device, which includes a chassis structure.

[0099] In a fifth aspect, the present application provides a cleaning system, which includes a base station and a cleaning device. The cleaning device can be placed on the base station.

[0100] The roller brush assembly provided by the present application has the following beneficial effects: the roller brush moves relative to the upper cover to move between a high position and a low position, so that the roller brush can be applied to different surfaces to be cleaned. When the surface to be cleaned is uneven, the roller brush can be controlled to be in different positions to meet the contact depth between the surface to be cleaned, thereby ensuring the cleaning effect.

[0101] Furthermore, the shielding member moves relative to the upper cover to move between an ascending position and a descending position. When the shielding member moves downward to form the second air flow opening, since the size of the second air flow opening is smaller than that of the first air flow opening, a larger suction force can be formed at the second air flow opening to improve the suction effect on the surface to be cleaned, thereby improving the cleaning effect on soft surfaces to be cleaned such as carpets.

[0102] Therefore, by moving the shield relative to the upper cover and the roller brush relative to the upper cover, the cleaning device can be applied to different application scenarios to reduce the possibility of replacing accessories such as the roller brush assembly, which makes the cleaning process cumbersome and affects the user experience.

[0103] The coordinated movement of the first driving assembly and the second driving assembly can realize the linkage between the shielding member and the roller brush, and can make the structure of the roller brush assembly compact.

[0104] In addition to the technical problems solved by the embodiments of the present invention described above, the technical features that constitute the technical solutions, and the beneficial effects brought about by the technical features of the technical solutions, other technical problems that can be solved by the roller brush assembly, chassis structure, cleaning equipment and cleaning system provided by the embodiments of the present invention, other technical features included in the technical solutions, and the beneficial effects brought about by these technical features will be further described in detail in the specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0105] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0106] Figure 1 It is a three-dimensional schematic diagram of a roller brush assembly according to an embodiment of the present application;

[0107] Figure 2 It is a cross-sectional structural schematic diagram of a roller brush assembly in an embodiment of the present application, in which a shielding member is in a raised position;

[0108] Figure 3 It is a schematic cross-sectional structural diagram of a roller brush assembly in an embodiment of the present application, in which a shielding member is in a lowered position;

[0109] Figure 4 for Figure 1 The enlarged schematic diagram of point A in the middle;

[0110] Figure 5 A schematic diagram of the top view of the roller brush assembly according to an embodiment of the present application;

[0111] Figure 6 This is a schematic diagram of the coordinated movement of the first adapter and the second adapter when the roller brush assembly according to one embodiment of the present application is in the initial mode;

[0112] Figure 7 A schematic diagram of the coordinated movement of the first adapter and the second adapter during the switching process of the roller brush assembly from the initial mode to the first cleaning mode according to an embodiment of the present application;

[0113] Figure 8 A schematic diagram of the coordinated movement of the first adapter and the second adapter when the roller brush assembly according to one embodiment of the present application is in the first cleaning mode;

[0114] Fig. 9 A schematic diagram of the coordinated movement of the first adapter and the second adapter when the roller brush assembly according to one embodiment of the present application is in the second cleaning mode;

[0115] Fig.10 This is a schematic diagram of the coordinated movement of the first adapter and the second adapter during the switching of the roller brush assembly from the second cleaning mode to the first cleaning mode according to one embodiment of the present application.

[0116] Description of reference numerals:

[0117] 100-roller brush assembly;

[0118] 110-upper cover; 110a-accommodating cavity; 110b-first air flow outlet; 110c-limiting slide groove;

[0119] 120-Roller brush;

[0120] 130 - shielding member; 130a - second air flow outlet; 131 - limiting protrusion;

[0121] 140-first driving assembly; 1401-first limiting end; 1402-second limiting end; 141-first adapter; 141a-annular slideway; 1411-adapting disc; 1412-limiting disc; 142-first elastic member; 143-second elastic member; 144-first transmission member;

[0122] 150 - second driving assembly; 151 - second adapter; 151a - matching convex portion; 152 - second transmission member;

[0123] 160-Power source.

[0124] The above drawings have shown clear embodiments of the present application, which will be described in more detail later. These drawings and text descriptions are not intended to limit the scope of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0125] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementation methods described in the following exemplary embodiments do not represent all implementation methods consistent with the present application. On the contrary, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the attached claims. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present application.

[0126] A cleaning device provided in an embodiment of the present application may be a sweeper. A sweeper is a device for cleaning the ground. The cleaning function of the sweeper is mainly achieved by the high-speed rotation of the motor. The high-speed rotation of the motor can form a vacuum in the body, so that dust, hair and other dirt on the ground can be sucked into the body from the suction port by using the high-speed airflow. The dirt can be accumulated in the bag machine or the dust box to facilitate regular cleaning by the user.

[0127] Among them, some sweeping machines can also be equipped with a mop and a water tank for mopping the floor after sweeping the floor, thereby further improving the cleaning effect. Among them, the cleaning device of the embodiment of the present application can only have the sweeping function, or can have the combined function of sweeping and mopping, which is not limited in the embodiment of the present application.

[0128] The roller brush assembly includes an upper cover for fixing the roller brush. The upper cover can also be called a roller brush holder, a roller brush cover plate, etc. The roller brush can be located in the cavity between the upper cover and the surface to be cleaned. When the motor rotates at high speed, the air outside the upper cover can be quickly sucked in, so that the air flow rate inside the upper cover increases, and the air pressure in the cavity between the upper cover and the surface to be cleaned decreases, forming a negative pressure environment. When the roller brush rotates, the bristles lift up dirt such as dust and hair on the surface to be cleaned, causing it to suspend near the roller brush, thereby quickly sucking the suspended dirt into the dust collection box through the negative pressure environment.

[0129] Compared with the surfaces to be cleaned of floors and tiles, the surface of carpets is soft, so dirt such as dust and hair can easily embed deeply into the interior of carpets. In the related art, when cleaning equipment performs cleaning tasks, the general suction force can only achieve light cleaning of dirt on the surface of carpets, and it is difficult to achieve deep cleaning of dirt inside carpets, resulting in poor cleaning effect on carpets, affecting user experience.

[0130] Based on the above technical problems, the applicant has improved the structure of the existing roller brush assembly. In an embodiment of the present application, the roller brush assembly is provided with a shielding member. The shielding member can be used to shield the first air flow opening between the upper cover and the surface to be cleaned. Since part of the first air flow opening is blocked to form a second air flow opening, the opening of the second air flow opening is smaller than the opening of the first air flow opening. Therefore, when the surface to be cleaned is a carpet, the shielding member can improve the airtightness of the upper cover at the second air flow opening, so that a greater pressure difference can be generated at the second air flow opening, thereby deeply cleaning the dirt inside the carpet and improving the cleaning effect on the carpet.

[0131] The roller brush assembly 100, chassis structure, cleaning equipment and cleaning system provided by the present application are described below with reference to the accompanying drawings and in combination with specific embodiments.

[0132] See also Figures 1 to 5 As shown, the roller brush assembly 100 of the embodiment of the present application may include an upper cover 110 , a roller brush 120 and a shielding member 130 .

[0133] The upper cover 110 has a receiving cavity 110a facing the surface to be cleaned. A first air flow opening 110b can be formed between the lower end surface of the upper cover 110 facing the surface to be cleaned and the surface to be cleaned. Part of the roller brush 120 is located in the receiving cavity 110a, and the roller brush 120 can move relative to the upper cover 110 to have a high position and a low position.

[0134] The shielding member 130 is disposed on the upper cover 110. The shielding member 130 can move relative to the upper cover 110 to have an ascending position and a descending position. When the shielding member 130 is in the descending position, the lower end surface of the shielding member 130 exceeds the lower end surface of the upper cover 110. Part of the shielding member 130 blocks part of the first air flow opening 110b. A second air flow opening 130a is formed between the lower end surface of the shielding member 130 and the surface to be cleaned.

[0135] In the embodiment of the present application, the shielding member 130 can slide relative to the upper cover 110 and has an ascending position and a descending position, so that the roller brush assembly 100 can have two cleaning states. When the shielding member 130 is in the ascending position, dirt on the surface to be cleaned can be sucked through the first air flow opening 110b. When the shielding member 130 is in the descending position, the lower end surface of the shielding member 130 can block part of the first air flow opening 110b to form a second air flow opening 130a. At this time, dirt on the surface to be cleaned can be sucked through the second air flow opening 130a.

[0136] Since part of the first air flow outlet 110b is blocked to form the second air flow outlet 130a, the opening of the second air flow outlet 130a is smaller than the opening of the first air flow outlet 110b. Therefore, when the shielding member 130 is in the lowered position, the airtightness of the roller brush assembly 100 at the second air flow outlet 130a is higher than the airtightness of the roller brush assembly 100 at the first air flow outlet 110b when the shielding member 130 is in the raised position. When the shielding member 130 is in the lowered position, it can have a stronger suction effect on the surface to be cleaned.

[0137] Therefore, when cleaning hard surfaces to be cleaned, such as floors and tiles, since dirt such as dust and hair usually float on the surface of the surface to be cleaned, the shielding member 130 can be placed in the raised position to suction and clean the dirt on the surface to be cleaned through the first air flow opening 110b. When cleaning soft surfaces to be cleaned, such as carpets, since dirt such as dust and hair are easily deeply embedded in the interior of the surface to be cleaned, the shielding member 130 can be placed in the lowered position to suction and clean the surface to be cleaned deeply through the second air flow opening 130a.

[0138] Furthermore, the roller brush 120 of the embodiment of the present application can also move relative to the upper cover 110 to have a high position and a low position. When the roller brush 120 is in the low position, it can come into contact with the surface to be cleaned to clean the surface. When the surface to be cleaned is soft such as a carpet or when encountering obstacles, the roller brush 120 can be placed in a high position. The contact depth between the roller brush 120 and the surface to be cleaned when it is in the high position is less than the contact depth between the roller brush 120 and the surface to be cleaned when it is in the low position. Alternatively, when the roller brush 120 is in the high position, there can be a distance between the roller brush 120 and the surface to be cleaned.

[0139] Specifically, when cleaning a soft surface to be cleaned, such as a carpet, the roller brush 120 can be controlled to be in a high position to prevent the roller brush 120 from being entangled with the fluff of the carpet, thereby damaging the carpet or the roller brush 120. Alternatively, when encountering obstacles such as a wire harness and a threshold, by controlling the roller brush 120 to be in a high position, entanglement or collision between the wire harness and the roller brush 120 can be avoided, thereby affecting the normal operation of the cleaning device.

[0140] Therefore, in the embodiment of the present application, by moving the shielding member 130 relative to the upper cover 110 and the roller brush 120 relative to the upper cover 110, the cleaning device can be applied to different application scenarios to reduce the possibility of replacing accessories such as the roller brush assembly 100, which makes the cleaning process cumbersome and affects the user experience.

[0141] In some examples, the shielding member 130 may be located on the front side of the upper cover 110 along the advancing direction of the cleaning device. Alternatively, the shielding member 130 may also be located on both sides of the upper cover 110 along the advancing direction of the cleaning device. This is not limited in the embodiments of the present application.

[0142] It should be noted that the embodiment of the present application does not limit the number of the roller brushes 120. The number of the roller brushes 120 can be one or two.

[0143] In some embodiments, the movement trajectory of the roller brush 120 switching between the high position state and the low position state may be, but is not limited to, a linear movement. For example, the roller brush 120 may rise or fall along the height direction of the roller brush assembly 100 .

[0144] In some examples, the movement trajectory of the shielding member 130 between the raised position and the lowered position may be, but is not limited to, an arc. For example, the shielding member 130 may be flipped upward or downward relative to the upper cover 110. When the upper cover 110 is an arc-shaped structure, the shielding member 130 and the side wall of the upper cover 110 may fit each other. The shielding member 130 may slide along the side wall of the upper cover 110. The side wall may be an inner wall facing the side of the roller brush 120, or an outer wall facing away from the roller brush 120, which is not limited in the embodiments of the present application.

[0145] In some achievable embodiments, the roller brush assembly 100 further includes a power source 160. The power source 160 is connected to the upper cover 110. The power source 160 is used to drive the roller brush 120 to move between the high position and the low position, and the power source 160 is used to drive the shielding member 130 to move between the raised position and the lowered position.

[0146] In the embodiment of the present application, the movement of the roller brush 120 and the movement of the shielding member 130 can be realized by a power source 160. Therefore, on the one hand, the structure of the roller brush assembly 100 can be made compact, which is conducive to simplifying the layout of the components on the roller brush assembly 100. On the other hand, the cost of the roller brush assembly 100 can also be saved, which is conducive to reducing the product cost of the cleaning device.

[0147] In some examples, the power source 160 may be directly fixed to the upper cover 110, or the power source 160 may be connected to the upper cover 110 through other structures. This is not limited in the embodiments of the present application.

[0148] See also Figures 1 to 5 As shown, the embodiment of the present application provides a roller brush assembly 100. The roller brush assembly 100 may include an upper cover 110, a roller brush 120, a shielding member 130, a first driving assembly 140 and a second driving assembly 150.

[0149] The upper cover 110 has a receiving cavity 110a facing the surface to be cleaned. A first air flow opening 110b may be formed between the lower end surface of the upper cover 110 facing the surface to be cleaned and the surface to be cleaned. Part of the roller brush 120 is located in the receiving cavity 110a. The roller brush 120 is used to clean the surface to be cleaned.

[0150] The shielding member 130 is disposed on the upper cover 110. The shielding member 130 can move relative to the upper cover 110 to have an ascending position and a descending position. When the shielding member 130 is in the descending position, the lower end surface of the shielding member 130 exceeds the lower end surface of the upper cover 110. Part of the shielding member 130 blocks part of the first air flow opening 110b, and a second air flow opening 130a is formed between the lower end surface of the shielding member 130 and the surface to be cleaned.

[0151] The first driving assembly 140 is disposed on the upper cover 110, and is used to drive the shielding member 130 to move between the raised position and the lowered position. The second driving assembly 150 is disposed on the upper cover 110, and is used to enable the roller brush 120 to have a high position state and a low position state, and the roller brush 120 can move between the high position state and the low position state.

[0152] The second driving assembly 150 and the first driving assembly 140 move in coordination.

[0153] In the embodiment of the present application, by setting the shielding member 130 to have an ascending position and a descending position, it can be used to change the size of the suction port formed between the roller brush assembly 100 and the surface to be cleaned (that is, the opening of the first air flow port 110b is different from the opening of the second air flow port 130a), thereby changing the intensity of the negative pressure environment formed between the roller brush assembly 100 and the surface to be cleaned, and then different types of surfaces to be cleaned can be cleaned, which is beneficial to improving the applicability of the cleaning equipment and ensuring that different types of surfaces to be cleaned can have a better cleaning effect.

[0154] Among them, improving the applicability of the cleaning device may mean that different types of surfaces to be cleaned can be cleaned by using one cleaning device and a set of roller brush assemblies 100 without replacing the cleaning device or the roller brush assembly 100, which is conducive to improving user experience.

[0155] Furthermore, the roller brush 120 can move between a high position and a low position. When the surface of the surface to be cleaned is uneven, the roller brush 120 can be controlled to be in different positions to meet the contact depth with the surface to be cleaned, thereby ensuring the cleaning effect.

[0156] Specifically, when part of the surface to be cleaned is convex, the roller brush 120 can be controlled to be lifted up by a corresponding distance to reduce the possibility of excessive contact between the roller brush 120 and the surface to be cleaned, which may damage the roller brush 120 or the surface to be cleaned. When part of the surface to be cleaned is concave, the roller brush 120 can be controlled to be lowered by a corresponding distance so that the roller brush 120 can maintain contact with the surface to be cleaned, thereby ensuring the cleaning effect of the concave part of the surface to be cleaned.

[0157] The first drive assembly 140 can be used to drive the shielding member 130 to rise or fall to reach the rising position or the falling position. The second drive assembly 150 can be used to make the roller brush 120 rise or fall to reach the high position state and the low position state. By setting the first drive assembly 140 and the second drive assembly 150 to move in coordination, the shielding member 130 and the roller brush 120 can be linked, and the structure of the roller brush assembly 100 can be made compact.

[0158] It should be noted that the coordinated movement of the first drive assembly 140 and the second drive assembly 150 may mean that the movement of the first drive assembly 140 may cause the second drive assembly 150 to move, thereby causing the roller brush 120 to move. Alternatively, the movement of the second drive assembly 150 may cause the first drive assembly 140 to move, thereby causing the shielding member 130 to move, which is not specifically limited in the embodiments of the present application.

[0159] For example, when the cleaning device is walking on the surface to be cleaned without cleaning, the roller brush 120 can be in a high position and the shielding member 130 can be in an ascending position. When the cleaning device is in a cleaning mode, the roller brush 120 is in a low position. Depending on different application scenarios, the shielding member 130 can be in an ascending position or a descending position.

[0160] Specifically, when cleaning hard surfaces to be cleaned, such as floors and tiles, the shielding member 130 can be placed in an ascending position to suction and clean dirt on the surface to be cleaned through the first airflow port 110b. When cleaning soft surfaces to be cleaned, such as carpets, the shielding member 130 can be placed in a descending position to deeply suction and clean the surface to be cleaned through the second airflow port 130a. Since part of the first airflow port 110b is blocked to form the second airflow port 130a, the opening of the second airflow port 130a is smaller than the opening of the first airflow port 110b. Therefore, when the shielding member 130 is in the descending position, the airtightness of the roller brush assembly 100 at the second airflow port 130a is higher than the airtightness of the roller brush assembly 100 at the first airflow port 110b when the shielding member 130 is in the ascending position. When the shielding member 130 is in the descending position, the surface to be cleaned can have a stronger cleaning effect, so that it can be used for surfaces to be cleaned where dirt is easily deeply embedded, such as carpets.

[0161] It is easy to understand that in the embodiment of the present application, by adjusting the movement of the covering member 130 between the raised position and the lowered position, it is possible to adjust the suction force between the roller brush assembly 100 and the surface to be cleaned so as to be suitable for cleaning different types of surfaces to be cleaned. Therefore, the power of a power unit such as a blower or fan used to provide suction force can remain unchanged, which is beneficial to saving energy loss.

[0162] It should be noted that the first drive assembly 140 can also be used to drive the shielding member 130 to stop at any position between the ascending position and the descending position, so that a second air flow opening 130a of different sizes is formed between the lower end surface of the shielding member 130 and the surface to be cleaned, thereby enabling different suction forces to be provided between the roller brush assembly 100 and the surface to be cleaned, so as to be suitable for more cleaning scenarios.

[0163] In addition, it should be noted that the second drive assembly 150 can also be used to drive the roller brush 120 to stop at any position between the high position and the low position, so that the roller brush 120 can rise or fall different distances, thereby ensuring the contact depth between the roller brush 120 and the surface to be cleaned in different cleaning scenarios.

[0164] In some possible implementations, see Figure 3 As shown, the roller brush assembly 100 of the embodiment of the present application has an initial mode, a first cleaning mode and a second cleaning mode.

[0165] When the roller brush assembly 100 is in the initial mode, the roller brush 120 is in a high position and the shielding member 130 is in a raised position.

[0166] When the roller brush assembly 100 is in the first cleaning mode, the roller brush 120 is in a low position, the shielding member 130 is in an ascending position, and the external airflow enters the upper cover 110 through the first airflow opening 110b.

[0167] When the roller brush assembly 100 is in the second cleaning mode, the roller brush 120 is in a low position, the shielding member 130 is in a lowered position, and the external airflow enters the upper cover 110 through the second airflow port 130a.

[0168] In the embodiment of the present application, through the coordinated movement of the first drive assembly 140 and the second drive assembly 150, the roller brush assembly 100 can have an initial mode, a first cleaning mode, and a second cleaning mode, thereby satisfying different application scenarios.

[0169] When the cleaning device moves to the position to be cleaned of the surface to be cleaned, the cleaning device may not start cleaning the surface to be cleaned temporarily, and the roller brush assembly 100 may be in the initial mode. At this time, the roller brush 120 may be in a high position and the shielding member 130 may be in an ascending position, thereby reducing the possibility of the roller brush 120 or the shielding member 130 being entangled or colliding with obstacles on the surface to be cleaned during the movement of the cleaning device, and avoiding the possibility of the roller brush 120 contacting with the surface to be cleaned on the walking path, resulting in the possibility of the roller brush 120 being dirty before reaching the position to be cleaned, thereby affecting the cleaning effect.

[0170] When the cleaning device moves to the cleaning position of the surface to be cleaned, the roller brush assembly 100 can start cleaning. When cleaning hard surfaces to be cleaned such as floors and tiles, the roller brush assembly 100 can be in the first cleaning mode. The second drive assembly 150 can cause the roller brush 120 to drop to a low position so that the roller brush 120 is in contact with the surface to be cleaned. The first drive assembly 140 can keep the shielding member 130 in the raised position. During the cleaning process, a negative pressure environment is generated in the cavity of the upper cover 110. Under the action of negative pressure, the airflow outside the roller brush assembly 100 can suck the dirt on the surface to be cleaned into the upper cover 110 through the first airflow port 110b, and enter the dust box through the roller brush 120.

[0171] When cleaning a soft surface to be cleaned, such as a carpet, it is necessary to increase the suction effect on the surface to be cleaned because dirt is easily deeply embedded in the surface to be cleaned. At this time, the roller brush assembly 100 can be placed in the second cleaning mode. The second drive can drive the roller brush 120 to descend to a low position so that the roller brush 120 is in contact with the surface to be cleaned. The first drive assembly 140 can drive the shielding member 130 to descend to a lowered position. The shielding member 130 can block part of the first air flow outlet 110b to form a second air flow outlet 130a, thereby increasing the negative pressure at the second air flow outlet 130a. During the cleaning process, the dirt on the surface to be cleaned can be strongly sucked to deeply clean the surface to be cleaned.

[0172] In some achievable embodiments, the suction force of the external airflow through the second airflow opening 130 a is greater than the suction force through the first airflow opening 110 b .

[0173] In the embodiment of the present application, a first air flow opening 110b is formed between the lower end surface of the upper cover 110 and the surface to be cleaned. When the shielding member 130 is in the lowered position, the lower end surface of the shielding member 130 exceeds the lower end surface of the upper cover 110. At this time, a second air flow opening 130a is formed between the lower end surface of the shielding member 130 and the surface to be cleaned. In other words, the shielding member 130 can block part of the first air flow opening 110b to form the second air flow opening 130a, and therefore, the size of the first air flow opening 110b is larger than the size of the second air flow opening 130a.

[0174] It is easy to understand that the smaller the size of the second air flow opening 130a, the better the sealing performance between the upper cover 110 and the surface to be cleaned. Therefore, the suction force of the upper cover 110 at the second air flow opening 130a is greater than the suction force of the upper cover 110 at the first air flow opening 110b when the shielding member 130 is in the raised position. By generating a stronger suction force at the second air flow opening 130a, the carrying capacity of dirt on the surface to be cleaned can be improved, so that dirt such as hair and dust deeply embedded in the carpet can be sucked into the dust box.

[0175] It is easy to understand that the suction force of the roller brush assembly 100 when it is in the second cleaning mode is greater than the suction force of the roller brush assembly 100 when it is in the first cleaning mode. Therefore, when deep cleaning is required, the roller brush assembly 100 can be set to the second cleaning mode.

[0176] In some possible implementations, see Figure 2 and Figure 3 As shown, along the height direction of the roller brush assembly 100 , the size of the second air flow opening 130 a is smaller than the size of the first air flow opening 110 b .

[0177] In the embodiment of the present application, when the shielding member 130 is in the lowered position, the distance between the lower end surface of the shielding member 130 facing the surface to be cleaned and the surface to be cleaned can be smaller than the distance between the lower end surface of the upper cover 110 and the surface to be cleaned. Therefore, on the one hand, the shielding member 130 can increase the sealing between the roller brush assembly 100 and the surface to be cleaned, so as to increase the internal and external pressure difference of the upper cover 110 at the second air flow port 130a, so as to improve the suction force of the dirt on the surface to be cleaned of the carpet. On the other hand, the shielding member 130 can block the airflow to a certain extent, so that the airflow can flow more from between the roller brush 120 and the surface to be cleaned, thereby improving the suction force of the dirt on the surface to be cleaned.

[0178] In the embodiment of the present application, the distance between the shielding member 130 and the surface to be cleaned when the shielding member 130 is in the raised position and the lowered position is not limited. The distance can be limited according to the cleaning environment, the size of the cleaning garbage, etc.

[0179] In some possible implementations, see Figure 1 , Figure 4 and Figure 5 As shown, the first driving assembly 140 includes a first adapter 141. The first adapter 141 is connected to the shielding member 130. The second driving assembly 150 includes a second adapter 151. The second adapter 151 is connected to the roller brush 120.

[0180] The first adapter 141 and the second adapter 151 move in coordination. The first adapter 141 moves to drive the second adapter 151 to move. Alternatively, the first adapter 141 moves to provide a movement space for the second adapter 151.

[0181] In the embodiment of the present application, the coordinated movement of the first adapter 141 and the second adapter 151 means that the driving force for the movement of the second adapter 151 can come from the first adapter 141. In other words, the movement of the first adapter 141 can drive the second adapter 151 to move synchronously. Alternatively, the driving force for the movement of the second adapter 151 can also come from other structures. For example, after the first rotating member moves a certain distance, it can provide movement space for the second rotating member, so that the second rotating member can, under the action of the roller brush 120 itself or other structures, enable the roller brush 120 to move between a high position and a low position.

[0182] In some possible implementations, see Figure 2 , Figure 3 , Figures 6 to 10 As shown, one of the first adapter 141 and the second adapter 151 is provided with an annular slide 141a. The annular slide 141a has a first limit end 1401 and a second limit end 1402. The other of the first adapter 141 and the second adapter 151 is provided with a matching protrusion 151a. The matching protrusion 151a can slide in the annular slide 141a.

[0183] In the embodiment of the present application, the forward or reverse rotation of the first adapter 141 can realize the rise or fall of the shielding member 130. The motion trajectory of the first adapter 141 is arc-shaped. The lifting and lowering of the shielding member 130 in the height direction of the roller brush assembly 100 can be realized by occupying a smaller internal space on the roller brush assembly 100. The arc-shaped motion trajectory can have the effect of saving space.

[0184] Similarly, the forward or reverse rotation of the second adapter 151 can realize the rise or fall of the roller brush 120. The motion trajectory of the second adapter 151 is arc-shaped. The lifting and lowering of the roller brush 120 can be realized by occupying a smaller internal space on the roller brush assembly 100 through the arc-shaped motion trajectory of the second adapter 151.

[0185] The rotation of the first adapter 141 can drive the shielding member 130 to switch between the raised position and the lowered position, and the rotation of the first adapter 141 can also cause the second adapter 151 to rotate, so that the rotation of the second adapter 151 can cause the roller brush 120 to move between the high position state and the low position state. Therefore, the relative rotation of the first adapter 141 and the second adapter 151 can realize the linkage between the shielding member 130 and the roller brush 120.

[0186] In some examples, the first adapter 141 may be provided with a matching protrusion 151a. The second adapter 151 may be provided with an annular slideway 141a. Alternatively, the first adapter 141 may be provided with an annular slideway 141a, and the second adapter 151 may be provided with a matching protrusion 151a, which is not limited in the embodiments of the present application.

[0187] For example, the embodiment of the present application takes the first adapter 141 as an example in which the annular slideway 141a is provided and the second adapter 151 as an example in which the matching protrusion 151a is provided. Figures 6 to 10 The solid arrow indicates the movement direction of the annular slideway 141a, and the dotted arrow indicates the movement direction of the mating protrusion 151a.

[0188] See also Figure 6 As shown, when the roller brush assembly 100 is in the initial mode, the mating protrusion 151a is connected to the first limit end 1401 of the annular slide 141a. The mating protrusion 151a and the first limit end 1401 can have a relative force so that the mating protrusion 151a can remain stationary in the annular slide 141a. The first adapter 141 and the second adapter 151 are relatively stationary. The shielding member 130 can be maintained in the raised position, and the roller brush 120 can be maintained in the high position.

[0189] Since the roller brush 120 needs to be in a low position during the cleaning process of the cleaning device, the roller brush 120 can always have a downward movement trend in the initial mode to facilitate the roller brush assembly 100 to switch from the initial mode to the first cleaning mode or the second cleaning mode. The downward movement trend of the roller brush 120 can come from the gravity of the roller brush 120. Under the gravity of the roller brush 120, the mating protrusion 151a and the first limit end 1401 can maintain contact.

[0190] When the roller brush assembly 100 starts the first cleaning mode, for example, when cleaning the floor, tile, etc., the roller brush 120 needs to be lowered, and the shielding member 130 can be kept in the raised position. Figures 6 to 8 As shown, at this time, the first adapter 141 can be controlled to rotate counterclockwise. The first limit end 1401 of the annular slide 141a on the first adapter 141 rotates in a direction away from the matching protrusion 151a. Through the movement of the first adapter 141, the annular slide 141a can provide a movable space for the matching protrusion 151a. At this time, the matching protrusion 151a is no longer abutted by the first limit end 1401, and the matching protrusion 151a can rotate counterclockwise under the action of the gravity of the roller brush 120, so that the roller brush 120 can descend to reach a low position and clean the surface to be cleaned.

[0191] It should be noted that when the roller brush 120 reaches the low position, the roller brush 120 contacts the surface to be cleaned, so the roller brush 120 will not continue to descend. In other words, the mating protrusion 151a will not continue to rotate counterclockwise. At this time, the mating protrusion 151a and the first limit end 1401 can be connected or have a spacing, which is not limited in the embodiment of the present application.

[0192] In addition, it should be noted that in the first cleaning mode, the counterclockwise rotation of the first adapter 141 is mainly used to provide a rotatable space for the mating protrusion 151a so that the roller brush 120 can be lowered. The first adapter 141 will not cause the shielding member 130 to descend during this stroke.

[0193] When the roller brush assembly 100 is switched from the first cleaning mode to the second cleaning mode, for example, when the carpet waiting to be cleaned needs to be cleaned, the roller brush 120 can remain lowered and the shielding member 130 can also move downward to the lowered position. Figure 8 and Fig. 9 As shown, at this time, the first adapter 141 can be controlled to continue to rotate counterclockwise. The first adapter 141 can drive the shielding member 130 downward to reach the lowered position.

[0194] In some possible implementations, see Figure 4 and Figure 5 As shown, the first driving assembly 140 of the embodiment of the present application may include a first elastic member 142. The first elastic member 142 connects the first adapter 141 and the shielding member 130. The first adapter 141 drives the first elastic member 142 to deform, so as to drive the shielding member 130 to rise to reach the rising position.

[0195] In the embodiment of the present application, the first elastic member 142 can provide a pulling force for the shielding member 130, so that when the roller brush assembly 100 is in the initial mode, the shielding member 130 can move in the direction of the raised position and remain in the raised position. When the shielding member 130 moves in the direction of the raised position, the first elastic member 142 can gradually produce elastic deformation. When the shielding member 130 is in the raised position, the elastic deformation produced by the first elastic member 142 is the largest, so that the shielding member 130 can be maintained in the raised position.

[0196] refer to Figure 7 and Figure 8In the direction shown, when the carpet waiting to be cleaned is cleaned, the shielding member 130 needs to be lowered to increase the suction force on the surface to be cleaned. The roller brush assembly 100 can start the second cleaning mode. At this time, the first adapter 141 can be controlled to rotate counterclockwise. The partial stroke of the counterclockwise rotation of the first adapter 141 can be used to provide a rotatable space for the second adapter 151 so that the roller brush 120 is in a low position. It should be noted that in this partial stroke, the tension of the first elastic member 142 gradually decreases. However, the first elastic member 142 can still keep the shielding member 130 in the raised position. In other words, the reduction in the tension of the first elastic member 142 is not enough to make the shielding member 130 move in the direction of the lowered position under the action of gravity. Therefore, through the stroke of the first adapter 141 continuing to rotate counterclockwise, the first elastic member 142 can continue to release the tension on the shielding member 130. When the pulling force of the first elastic member 142 on the shielding member 130 is 0, the shielding member 130 can reach the lowered position under the action of its own gravity.

[0197] In some examples, the first elastic member 142 may be, but is not limited to, a tension spring. The tension spring can satisfy the pulling effect on the shielding member 130, has a simple structure, low cost, and good reliability.

[0198] In some possible implementations, see Figure 4 and Figure 5 As shown, the first driving assembly 140 further includes a second elastic member 143. One end of the second elastic member 143 is connected to the shielding member 130. The other end of the second elastic member 143 is connected to the upper cover 110. The second elastic member 143 has a first deformation amount and a second deformation amount.

[0199] When the shielding member 130 is in the ascending position, the second elastic member 143 has a first deformation amount. When the shielding member 130 is in the descending position, the second elastic member 143 has a second deformation amount. The first deformation amount is greater than the second deformation amount.

[0200] In the embodiment of the present application, the second elastic member 143 can be used to drive the shielding member 130 downward to reach the lowered position. Therefore, the shielding member 130 can quickly reach the lowered position under the action of its own gravity and the second elastic member 143, which is conducive to improving the smoothness of the shielding member 130 during the lowering process.

[0201] Therefore, the first elastic member 142 can be used to provide an upward force for the shielding member 130, and the second elastic member 143 can be used to provide a downward force for the shielding member 130. Specifically, when the shielding member 130 is in the raised position, since the first elastic member 142 can provide a pulling force to the shielding member 130 to keep the shielding member 130 in the raised position, the pulling force of the first elastic member 142 is greater than or equal to the sum of the elastic force of the second elastic member 143 and the gravity of the shielding member 130. At this time, the second elastic member 143 generates a first deformation amount between the upper cover 110 and the shielding member 130 to accumulate elastic potential energy.

[0202] When the roller brush assembly 100 is in the first cleaning mode, the roller brush 120 can be in a descending state by rotating the first adapter 141 counterclockwise and cooperating with the movement of the second adapter 151. In this process, the tension of the first elastic member 142 can be gradually released, and the tension of the first elastic member 142 gradually decreases. However, the first elastic member 142 can still keep the shielding member 130 in the ascending position.

[0203] When the first adapter 141 continues to rotate counterclockwise, the roller brush assembly 100 switches from the first cleaning mode to the second cleaning mode. At this time, the tension of the first elastic member 142 continues to decrease. When the tension of the first elastic member 142 is less than the sum of the elastic force of the second elastic member 143 and the gravity of the shielding member 130, the second elastic member 143 can release elastic potential energy to drive the shielding member 130 to move in the direction of the lowered position.

[0204] Correspondingly, see Fig. 9 and Fig.10 As shown, when the shielding member 130 needs to be lifted, the roller brush assembly 100 can switch from the second cleaning mode to the first cleaning mode. At this time, the first adapter 141 can be controlled to rotate clockwise so that the first elastic member 142 gradually generates a pulling force. When the pulling force of the first elastic member 142 can overcome the gravity of the shielding member 130 and the elastic force of the second elastic member 143, the first elastic member 142 can make the shielding member 130 move in the direction of the raised position until it reaches the raised position.

[0205] It should be noted that, when the roller brush assembly 100 switches from the second cleaning mode to the first cleaning mode, the clockwise rotation of the first adapter 141 will not affect the second adapter 151. The second adapter 151 can remain stationary so that the roller brush 120 remains in a low position.

[0206] When the shielding member 130 is in the raised position and the roller brush 120 also needs to be lifted, the roller brush assembly 100 can be switched from the first cleaning mode to the initial mode. Fig.10 and Figure 6As shown, the first adapter 141 can be controlled to continue to rotate clockwise. The clockwise rotation of the first adapter 141 can make the annular slide 141a on the first adapter 141 gradually approach the matching protrusion 151a on the second adapter 151. When the first limit end 1401 of the annular slide 141a is connected to the matching protrusion 151a, the first adapter 141 continues to rotate clockwise, which can provide a driving force for the second adapter 151, so that the second adapter 151 can drive the roller brush 120 upward to reach the high position ( Figure 6 ).

[0207] In some examples, the second elastic member 143 may be, but is not limited to, a compression spring. When the first elastic member 142 generates a tensile deformation, the second elastic member 143 may generate a compressive deformation to accumulate elastic potential energy. When the tensile deformation of the first elastic member 142 gradually decreases to 0, the second elastic member 143 may release the elastic potential energy so that the shielding member 130 can reach the lowered position.

[0208] In some achievable embodiments, when the elastic force of the first elastic member 142 is greater than the elastic force of the second elastic member 143, the first elastic member 142 causes the shielding member 130 to be located in the raised position. When the elastic force of the second elastic member 143 is greater than the elastic force of the first elastic member 142, the second elastic member 143 causes the shielding member 130 to be located in the lowered position.

[0209] In the embodiment of the present application, the first elastic member 142 can be used to provide an upward force for the shielding member 130, and the second elastic member 143 can be used to provide a downward force for the shielding member 130. Therefore, through the mutual cooperation of the first elastic member 142 and the second elastic member 143, the shielding member 130 can move between the upward position and the downward position.

[0210] Specifically, when the elastic force of the first elastic member 142 is greater than the elastic force of the second elastic member 143, the shielding member 130 can move toward the ascending position under the elastic force of the first elastic member 142. When the elastic force of the first elastic member 142 is less than the elastic force of the second elastic member 143, the shielding member 130 can move toward the descending position under the elastic force of the second elastic member 143.

[0211] In some possible implementations, see Figure 4 and Figure 5As shown, the shielding member 130 is slidably connected to the upper cover 110. One of the shielding member 130 and the upper cover 110 may be provided with a limiting slide groove 110c. The other of the shielding member 130 and the upper cover 110 may be provided with a limiting protrusion 131 that can slide in the limiting slide groove 110c. When the shielding member 130 slides relative to the upper cover 110, the limiting protrusion 131 and the limiting slide groove 110c may cooperate with each other, so that the upper cover 110 can move along the path of the limiting slide groove 110c, so as to maintain the stability of the upper cover 110 during the movement.

[0212] In some examples, one end of the second elastic member 143 may abut against the limiting protrusion 131 , and the other end of the second elastic member 143 may abut against the inner wall of the limiting sliding groove 110 c , which is opposite to the limiting protrusion 131 along the deformation direction of the second elastic member 143 .

[0213] When the pulling force of the first elastic member 142 gradually decreases, the distance between the limiting protrusion 131 and the inner wall decreases, so that the second elastic member 143 generates compression deformation to accumulate elastic potential energy. When the pulling force of the first elastic force gradually increases, the distance between the limiting protrusion 131 and the inner wall increases, and the second elastic member 143 can release the elastic potential energy to drive the shielding member 130 to move to the lowered position.

[0214] The embodiment of the present application does not limit the specific structure of the limiting protrusion 131 and the limiting slot 110c. The number of the limiting protrusion 131 and the limiting slot 110c can be multiple. The structures of the multiple limiting protrusions 131 may not be completely the same, and the structures of the multiple limiting slots 110c may not be completely the same.

[0215] In some possible implementations, see Figure 4 and Figure 5 As shown, the first driving assembly 140 may further include a first transmission member 144. One end of the first transmission member 144 is connected to the first adapter member 141. The other end of the first transmission member 144 is connected to the shielding member 130. The first transmission member 144 may be tightened or extended relative to the first adapter member 141 to drive the first elastic member 142 to deform or reset.

[0216] In the embodiment of the present application, the rotation of the first adapter 141 can transmit power through the first transmission member 144. When the first transmission member 144 is tightened on the first adapter 141, the first elastic member 142 can be deformed, and the shielding member 130 can maintain the raised position or move in the direction of the raised position. When at least part of the first transmission member 144 is released from the first adapter 141, the first elastic member 142 can be reset. The shielding member 130 can move to the lowered position.

[0217] Specifically, in the initial mode of the roller brush assembly 100, the length of the first transmission member 144 wound around the first adapter 141 is relatively large, so that the first elastic member 142 exerts a pulling force on the shielding member 130, so that the shielding member 130 can be maintained in the raised position. During the process of switching the roller brush assembly 100 from the initial mode to the first cleaning mode or the second cleaning mode, part of the first transmission member 144 can be released by rotating the first adapter 141 counterclockwise, and the length of the first transmission member 144 wound around the first adapter 141 is reduced to gradually release the elastic force (pulling force) of the first elastic member 142. When the elastic force of the first elastic member 142 is less than the elastic force of the second elastic member 143, the shielding member 130 can be moved to a lowered position.

[0218] When the roller brush assembly 100 switches from the second cleaning mode to the first cleaning mode, the first adapter 141 can rotate clockwise to tighten part of the first transmission member 144, so that the length of the first transmission member 144 wound around the first adapter 141 increases. The first transmission member 144 can provide a lifting force to the shielding member 130 through the first elastic member 142, so that the shielding member 130 has an upward movement trend. When the elastic force of the first elastic member 142 on the shielding member 130 is greater than the sum of the elastic force of the second elastic member 143 on the shielding member 130 and the gravity of the shielding member 130, the first elastic member 142 can pull the shielding member 130 upward and reach the raised position.

[0219] In some examples, the first transmission member 144 may be, but is not limited to, a pull rope.

[0220] In some possible implementations, see Figure 4 and Figure 5 As shown, the second driving assembly 150 may further include a second transmission member 152. One end of the second transmission member 152 is connected to the second adapter 151. The other end of the second transmission member 152 is connected to the roller brush 120. The second transmission member 152 is tightened or extended relative to the second adapter 151 to drive the roller brush 120 to be in a high position or a low position.

[0221] In the embodiment of the present application, the second adapter 151 moves and power can be transmitted through the second transmission member 152. Part of the second transmission member 152 can be arranged around the second adapter 151. The second adapter 151 rotates clockwise or counterclockwise to tighten or extend the second transmission member 152 relative to the second adapter 151, so that the roller brush 120 can rise to a high position or fall to a low position.

[0222] Specifically, when the second adapter 151 rotates counterclockwise, part of the second transmission member 152 can be released, so that the second transmission member 152 is extended relative to the second adapter 151, so as to gradually lower the roller brush 120 to the low position. When the second adapter 151 rotates clockwise, part of the second adapter 151 can be tightened, so that the second transmission member 152 is tightened relative to the second adapter 151, so as to pull the roller brush 120 up to the high position.

[0223] In some examples, the second transmission member 152 may be, but is not limited to, a pull rope.

[0224] In some practicable embodiments, the annular slideway 141a may be located at the first adapter 141. The movement stroke of the first adapter 141 may be at least the sum of the movement distance of the roller brush 120 in the high position and the low position, and the movement distance of the shielding member 130 in the rising position and the falling position.

[0225] In the embodiment of the present application, during the process of the roller brush assembly 100 switching from the initial mode to the first cleaning mode, the partial stroke of the counterclockwise rotation of the first adapter 141 can be used to provide a movable space for the second adapter 151, so that the roller brush 120 can move between the high position and the low position. Therefore, the movement stroke of the first adapter 141 in this section is equal to the movement distance of the roller brush 120 between the high position and the low position. During the process of the roller brush assembly 100 switching from the first cleaning mode to the second cleaning mode, the partial stroke of the counterclockwise rotation of the first adapter 141 is used to move the shielding member 130 between the raised position and the lowered position. Therefore, the movement stroke of the first adapter 141 in this section is equal to the movement distance of the shielding member 130 between the raised position and the lowered position.

[0226] In summary, the movement stroke of the first adapter 141 is at least the sum of the maximum movement stroke of the roller brush 120 and the maximum movement stroke of the shielding member 130 .

[0227] In some possible implementations, see Figure 4 and Figure 5 As shown, the roller brush assembly 100 of the embodiment of the present application may further include a power source 160. The first drive assembly 140 and the second drive assembly 150 may share a power source 160. One of the first drive assembly 140 and the second drive assembly 150 moves synchronously with the power source 160.

[0228] In the embodiment of the present application, the first drive component 140 and the second drive component 150 move in coordination. Therefore, when one of the first drive component 140 and the second drive component 150 is connected to the power source 160, the movement of the other of the first drive component 140 and the second drive component 150 can be realized.

[0229] It is easy to understand that, since the first driving assembly 140 and the second driving assembly 150 can share a power source 160, the structure of the roller brush assembly 100 can be made compact, which is conducive to simplifying the layout of the components on the roller brush assembly 100. In addition, the cost of the roller brush assembly 100 can also be saved, which is conducive to reducing the product cost of the cleaning device.

[0230] It should be noted that, in the embodiment of the present application, the power source 160 can directly provide power to the first drive assembly 140, so that the shielding member 130 can move between the raised position and the lowered position. Since the first drive assembly 140 and the second drive assembly 150 move in coordination, when the first drive assembly 140 moves, the second drive assembly 150 can move, so that the roller brush 120 can move between the high position state and the low position state.

[0231] Similarly, the power source 160 can also directly provide power to the second drive assembly 150 so that the roller brush 120 can move between the high position state and the low position state. Therefore, when the second drive assembly 150 moves, the first drive assembly 140 can be moved, so that the shielding member 130 can move between the raised position and the lowered position.

[0232] In some examples, the power source 160 may be connected to the first adapter 141 via a rotating shaft to drive the first adapter 141 to rotate clockwise or counterclockwise.

[0233] In some possible implementations, see Figure 5 As shown, the first adapter 141 may include a connected adapter disc 1411 and a limit disc 1412. For example, the adapter disc 1411 and the limit disc 1412 are detachably connected. The adapter disc 1411 can be used to be directly connected to the power source 160. Along the axial direction of the adapter disc 1411, the second adapter 151 can be located between the adapter disc 1411 and the limit disc 1412. The limit disc 1412 can be used to prevent the second adapter 151 from being separated from the first adapter 141, resulting in the inability to cooperate in transmission between the two, thereby affecting the possibility of movement of the shielding member 130 and the roller brush 120.

[0234] In some examples, along the axial direction of the adapter disk 1411 , the limiting disk 1412 may be close to the middle area of ​​the shielding member 130 .

[0235] In some examples, the annular slideway 141a may be disposed on the adapter disc 1411. Part of the first transmission member 144 may be disposed around the limiting disc 1412, so that the first transmission member 144 does not need to be arranged very long, so as to facilitate the cooperation between the first transmission member 144 and the first elastic member 142.

[0236] The embodiment of the present application provides a chassis structure, which may include a chassis body and a roller brush assembly 100 in any of the above embodiments. The roller brush assembly 100 may be located at the bottom of the chassis body.

[0237] In some examples, the roller brush assembly 100 and the chassis body may be detachably connected.

[0238] In some examples, the chassis structure may further include a cleaning module such as a side brush, a rag, etc. The cleaning module may be arranged on a side of the chassis body facing the surface to be cleaned.

[0239] An embodiment of the present application provides a cleaning device. The cleaning device may include a chassis structure.

[0240] The embodiment of the present application also provides a cleaning system. The cleaning system may include a base station and a cleaning device. The cleaning device may be placed on the base station.

[0241] The base station may have a charging function. When the cleaning device is placed on the base station, the base station may charge the cleaning device.

[0242] The base station may also have a cleaning function. When the cleaning device is placed on the base station, the roller brush 120, mop, side brush and other structures on the cleaning device may be cleaned.

[0243] It should be noted here that the numerical values ​​and numerical ranges involved in this application are approximate values. Due to the influence of the manufacturing process, there may be a certain range of errors, which can be considered negligible by those skilled in the art.

[0244] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, or it can be an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0245] In the description of the present application, it should be understood that the terms used, such as “center”, “length”, “width”, “thickness”, “top”, “bottom”, “up”, “down”, “left”, “right”, “front”, “back”, “vertical”, “horizontal”, “inside”, “outside”, “axial”, “circumferential”, etc., to indicate directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred position or component must have a specific direction, a specific structure and operation, and therefore should not be understood as a limitation on the present invention.

[0246] In the embodiments of the present application, the devices or elements referred to or implied must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the embodiments of the present application. In the description of the embodiments of the present application, the meaning of "multiple" is two or more, unless otherwise precisely and specifically specified.

[0247] The terms "first", "second", "third", "fourth", etc. (if any) in the description and claims of the embodiments of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein, for example, can be implemented in an order other than those illustrated or described herein.

[0248] In addition, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or apparatus that includes a series of steps or elements is not necessarily limited to those steps or elements explicitly listed, but may include other steps or elements not explicitly listed or inherent to such process, method, product, or apparatus.

[0249] The term "plurality" in this article refers to two or more than two. The term "and / or" in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the previous and next associated objects are in an "or" relationship; in a formula, the character " / " indicates that the previous and next associated objects are in a "division" relationship.

[0250] It should be understood that the various numerical numbers involved in the embodiments of the present application are only used for the convenience of description and are not used to limit the scope of the embodiments of the present application.

[0251] It can be understood that in the embodiments of the present application, the size of the serial numbers of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

Claims

1. A roller brush assembly (100), characterized in that: include: An upper cover (110), the upper cover (110) having a receiving cavity (110a) facing the surface to be cleaned, and a first air flow opening (110b) formed between a lower end surface of the upper cover (110) facing the surface to be cleaned and the surface to be cleaned; A rolling brush (120), wherein a portion of the rolling brush (120) is located in the accommodating cavity (110a), and the rolling brush (120) can move relative to the upper cover (110) to have a high position state and a low position state; A shielding member (130), wherein the shielding member (130) is disposed on the upper cover (110), and the shielding member (130) can move relative to the upper cover (110) to have an ascending position and a descending position. When the shielding member (130) is located at the descending position, the lower end surface of the shielding member (130) protrudes from the lower end surface of the upper cover (110), and a portion of the shielding member (130) blocks a portion of the first air flow opening (110b), and a second air flow opening (130a) is formed between the lower end surface of the shielding member (130) and the surface to be cleaned.

2. The roller brush assembly (100) according to claim 1, characterized in that: The invention also comprises a power source (160), wherein the power source (160) is connected to the upper cover (110), and the power source (160) is used to drive the roller brush (120) to move between the high position state and the low position state, and the power source (160) is used to drive the shielding member (130) to move between the raised position and the lowered position.

3. A roller brush assembly (100), characterized in that: include: An upper cover (110), the upper cover (110) having a receiving cavity (110a) facing the surface to be cleaned, and a first air flow opening (110b) formed between a lower end surface of the upper cover (110) facing the surface to be cleaned and the surface to be cleaned; A rolling brush (120), part of the rolling brush (120) being located in the accommodating cavity (110a), and the rolling brush (120) being used to clean the surface to be cleaned; a shielding member (130), the shielding member (130) being arranged on the upper cover (110), the shielding member (130) being movable relative to the upper cover (110) so as to have an ascending position and a descending position, and when the shielding member (130) is located at the descending position, the lower end surface of the shielding member (130) protrudes from the lower end surface of the upper cover (110), a part of the shielding member (130) shields a part of the first air flow opening (110b), and a second air flow opening (130a) is formed between the lower end surface of the shielding member (130) and the surface to be cleaned; a first driving assembly (140), the first driving assembly (140) being arranged on the upper cover (110), and the first driving assembly (140) being used for driving the shielding member (130) to move between the ascending position and the descending position; a second driving assembly (150), the second driving assembly (150) being arranged on the upper cover (110), the second driving assembly (150) being used to enable the roller brush (120) to have a high position state and a low position state, the roller brush (120) moving between the high position state and the low position state; The first drive assembly (140) and the second drive assembly (150) move in coordination.

4. The roller brush assembly (100) according to claim 1 or 3, characterized in that: The roller brush assembly (100) has an initial mode, a first cleaning mode and a second cleaning mode; When the roller brush assembly (100) is in the initial mode, the roller brush (120) is in the high position state, and the shielding member (130) is in the raised position; When the roller brush assembly (100) is in the first cleaning mode, the roller brush (120) is in the low position, the shielding member (130) is in the raised position, and external airflow enters the upper cover (110) through the first airflow port (110b); When the roller brush assembly (100) is in the second cleaning mode, the roller brush (120) is in a low position, the shielding member (130) is located in the lowered position, and external airflow enters the upper cover (110) through the second airflow port (130a).

5. The roller brush assembly (100) according to claim 1 or 3, characterized in that: The suction force of the external airflow passing through the second airflow opening (130a) is greater than the suction force of the external airflow passing through the first airflow opening (110b).

6. The roller brush assembly (100) according to claim 1 or 3, characterized in that: Along the height direction of the roller brush assembly (100), the size of the second air flow opening (130a) is smaller than the size of the first air flow opening (110b).

7. The roller brush assembly (100) according to claim 3, characterized in that: The invention also includes a power source (160), wherein the first drive component (140) and the second drive component (150) share the power source (160), and one of the first drive component (140) and the second drive component (150) moves synchronously with the power source (160).

8. The roller brush assembly (100) according to claim 3, characterized in that: The first driving component (140) comprises a first adapter (141), the first adapter (141) is connected to the shielding component (130), the second driving component (150) comprises a second adapter (151), the second adapter (151) is connected to the roller brush (120), and the first adapter (141) and the second adapter (151) move in coordination; The first adapter (141) moves to drive the second adapter (151) to move, or the first adapter (141) moves to provide movement space for the second adapter (151).

9. The roller brush assembly (100) according to claim 8, characterized in that: One of the first adapter (141) and the second adapter (151) is provided with an annular slide (141a), and the annular slide (141a) has a first limiting end (1401) and a second limiting end (1402); the other of the first adapter (141) and the second adapter (151) is provided with a matching protrusion (151a), and the matching protrusion (151a) can slide in the annular slide (141a).

10. The roller brush assembly (100) according to claim 8, characterized in that: The first driving component (140) comprises a first elastic member (142), wherein the first elastic member (142) is connected to the first adapter member (141) and the shielding member (130), and the first adapter member (141) drives the first elastic member (142) to deform so as to drive the shielding member (130) to rise to reach the rising position.

11. The roller brush assembly (100) according to claim 10, characterized in that: The first driving assembly (140) further comprises a second elastic member (143), one end of the second elastic member (143) is connected to the shielding member (130), the other end of the second elastic member (143) is connected to the upper cover (110), and the second elastic member (143) has a first deformation amount and a second deformation amount; When the shielding member (130) is in the ascending position, the second elastic member (143) has the first deformation amount, and when the shielding member (130) is in the descending position, the second elastic member (143) has the second deformation amount, and the first deformation amount is greater than the second deformation amount.

12. The roller brush assembly (100) according to claim 11, characterized in that: When the elastic force of the first elastic member (142) is greater than the sum of the elastic force of the second elastic member (143) and the gravity of the shielding member (130), the first elastic member (142) causes the shielding member (130) to move in the direction of the ascending position; when the elastic force of the second elastic member (143) is greater than the elastic force of the first elastic member (142), the second elastic member (143) causes the shielding member (130) to move in the direction of the descending position.

13. The roller brush assembly (100) according to claim 11, characterized in that: The first elastic member (142) is a tension spring; and / or the second elastic member (143) is a compression spring.

14. The roller brush assembly (100) according to claim 11, characterized in that: The first driving component (140) further comprises a first transmission member (144), one end of the first transmission member (144) being connected to the first adapter member (141), and the other end of the first transmission member (144) being connected to the first elastic member (142), and the first transmission member (144) being tightened or extended relative to the first adapter member (141) so as to drive the first elastic member (142) to deform or reset.

15. The roller brush assembly (100) according to claim 8, characterized in that: The second driving assembly (150) further comprises a second transmission member (152), one end of the second transmission member (152) being connected to the second adapter member (151), and the other end of the second transmission member (152) being connected to the roller brush (120); The second transmission member (152) is tightened or extended relative to the second adapter member (151) to drive the roller brush (120) to be located in the high position state or the low position state.

16. The roller brush assembly (100) according to claim 9, characterized in that: The annular slideway (141a) is located on the first adapter (141), and the movement stroke of the first adapter (141) is at least the sum of the movement distance of the roller brush (120) in the high position state and the low position state, and the movement distance of the shielding member (130) in the rising position and the falling position.

17. The roller brush assembly (100) according to claim 7, characterized in that: The first adapter (141) comprises a connected adapter disc (1411) and a limit disc (1412), and the adapter disc (1411) is connected to the power source (160); Along the axial direction of the adapter disc (1411), the second adapter component (151) is located between the adapter disc (1411) and the limiting disc (1412).

18. A chassis structure, characterized in that: include: Chassis body; The roller brush assembly (100) according to any one of claims 1 to 17, wherein the roller brush assembly (100) is located at the bottom of the chassis body.

19. A cleaning device, characterized in that: Comprising the chassis structure as claimed in claim 18.

20. A cleaning system, characterized in that: include: Base station; And the cleaning device as claimed in claim 19, which is placeable on the base station.

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