Rolling brush axial limiting device, cleaning brush and automatic cleaning equipment

Abstract

The present disclosure provides a rolling brush axial limiting device, a cleaning brush and an automatic cleaning device. The rolling brush axial limiting device comprises: a first assembly component configured to output driving force after being connected with a driving device, the first assembly component having a first limiting piece, the first limiting piece being rotatably arranged on the first assembly component; a second assembly component configured to limit axial movement of the rolling brush after at least partially accommodating the first assembly component, the second assembly component having a second limiting piece, the second limiting piece being rotatably arranged on the second assembly component; and wherein the first limiting piece and the second limiting piece cooperate to achieve locking after the first assembly component is at least partially assembled in the second assembly component.

Description

Technical Field

[0001] This disclosure relates to the field of self-propelled equipment technology, and more specifically, to a roller brush axial limiting device, a cleaning brush, and an automatic cleaning device. Background Technology

[0002] With the continuous development of technology, automatic cleaning equipment, such as robotic vacuum cleaners and robot vacuums / mops, has been widely adopted in households. Robotic vacuum cleaners are equipped with cleaning brushes to pick up debris of different sizes from the floor and suck it into a dustbin.

[0003] However, the roller brush moves axially upwards during the rotation cleaning process, which affects the cleaning efficiency and user experience of the automatic cleaning equipment. Summary of the Invention

[0004] The purpose of this disclosure is to provide an axial limiting device for a roller brush, a cleaning brush, and an automatic cleaning device, which can solve the problem of axial movement of the roller brush during the cleaning process in an automatic cleaning device. Specifically:

[0005] An axial limiting device for a roller brush, connected to at least one end of the roller brush, comprising:

[0006] A first assembly component is configured to output driving force after being connected to a driving device. The first assembly component has a first limiting member, which is rotatably disposed on the first assembly component.

[0007] The second assembly member is configured to at least partially accommodate the first assembly member and restrict the axial movement of the brush. The second assembly member has a second limiting member rotatably disposed on the second assembly member.

[0008] Wherein, after the first assembly component is at least partially assembled to the second assembly component, the first limiting member and the second limiting member cooperate to achieve locking.

[0009] In some embodiments, the first assembly member includes a first receiving portion, and the first limiting member includes a first locking portion, the first locking portion being rotatably disposed in the first receiving portion;

[0010] The second assembly component includes a second receiving portion, and the second limiting member includes a second locking portion, which is rotatably disposed in the second receiving portion;

[0011] Wherein, after the first assembly component is at least partially assembled to the second assembly component, the first locking part and the second locking part cooperate to achieve locking.

[0012] In some embodiments, the first assembly member includes a first pushing portion configured to push against the second limiting member so that it cooperates with the first limiting member to achieve locking;

[0013] The second assembly component includes a second pushing part, configured to push against the first limiting member so that it cooperates with the second limiting member to achieve locking.

[0014] In some embodiments, the first receiving portion is an arc-shaped structure, and the first locking portion is an arc-shaped structure with the same curvature as the first receiving portion; and / or, the second receiving portion is an arc-shaped structure, and the second locking portion is an arc-shaped structure with the same curvature as the second receiving portion.

[0015] In some embodiments, the curvatures of the first receiving portion, the first locking portion, the second receiving portion, and the second locking portion are substantially the same.

[0016] In some embodiments, the first assembly component includes a first through groove that communicates with the first receiving portion;

[0017] The first limiting member includes a first protrusion, which is configured to extend out of the first through groove.

[0018] In some embodiments, the second assembly member includes a second through groove that communicates with the second receiving portion;

[0019] The second limiting member includes a second protrusion, which is configured to extend out of the second through groove.

[0020] In some embodiments, the second assembly component further includes:

[0021] A positioning element is disposed at the end of the second assembly component that is away from the second limiting element;

[0022] An elastic element, connected between the positioning element and the second extension, is configured to provide a locking force to the second limiting element.

[0023] In some embodiments, the second assembly member further includes a second limiting disc disposed on the end face of the second assembly member facing the first assembly member, configured to restrict axial movement of the brush.

[0024] In some embodiments, the second limiting disc includes a recess;

[0025] The first assembly component includes a first limiting plate. After the first assembly component is assembled with the second assembly component, the first limiting plate is assembled with the recessed portion.

[0026] In some embodiments, the first assembly member further includes an adapter disposed on the side of the first assembly member away from the first limiting member.

[0027] In some embodiments, the adapter is a polygonal prism structure or a plum blossom structure.

[0028] In some embodiments, the second assembly member further includes at least one limiting ridge extending axially along the second assembly member and configured to limit the circumferential direction after being assembled to the roller brush.

[0029] In some embodiments, the second assembly component is integrally formed with the roller brush.

[0030] Some embodiments of this disclosure provide a cleaning brush, including the roller brush axial limiting device as described in any of the preceding claims.

[0031] This disclosure provides an automatic cleaning device, including the cleaning brush described in the foregoing embodiments, through some embodiments.

[0032] The above-described solutions in this disclosure can have the following beneficial effects:

[0033] This disclosure improves the conventional axial limiting method for roller brushes, thereby reducing the number of structural components in the axial limiting mechanism and fundamentally lowering production, assembly, and transportation costs. By modifying the external limiting mechanism and integrating it inside the roller brush body, this disclosure reduces the space occupied by the axial limiting mechanism, thus increasing the ground interference of the cleaning functional components and improving cleaning efficiency. Furthermore, this disclosure allows users to complete disassembly and assembly with the press of a single switch, enhancing user efficiency and improving overall user satisfaction. Attached Figure Description

[0034] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure. It is obvious that the drawings described below are merely some embodiments of this disclosure, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort. In the drawings:

[0035] Figure 1 A schematic diagram of the structure of an automatic cleaning device provided in this disclosure, representing an exemplary embodiment.

[0036] Figure 2 for Figure 1 A bottom-view structural diagram of an automatic cleaning equipment.

[0037] Figure 3 An exploded three-dimensional view of the axial limiting device for the roller brush provided in this disclosure;

[0038] Figure 4 This is a three-dimensional structural diagram of the roller brush axial limiting device provided in this disclosure;

[0039] Figure 5 This is a cross-sectional view of the roller brush axial limiting device provided in this disclosure;

[0040] Figure 6 This is an exploded cross-sectional view of the axial limiting device for the roller brush provided in this disclosure;

[0041] Figure 7 This is an illustration of the assembly process of the roller brush axial limiting device provided in this disclosure;

[0042] Figure 8 This is an illustration of the unlocking process of the axial limiting device for the roller brush provided in this disclosure.

[0043] Explanation of reference numerals in the attached figures:

[0044] Mobile platform 1000, sensing system 2000, drive system 3000, human-computer interaction system 4000, cleaning module 5000, roller brush 5100, first assembly component 5200, first limiting component 5210, first locking part 5211, first extension part 5212, adapter part 5230, first limiting plate 5240, first receiving part 5250, first through groove 5260, first pushing part 5270, second assembly component 5300, second limiting component 5310, second locking part 5311, second extension part 5312, second receiving part 5320, second through groove 5330, elastic component 5340, limiting ridge 5350, positioning component 5360, second limiting plate 5370, recessed part 5371, second pushing part 5380, receiving cavity 5390. Detailed Implementation

[0045] To make the technical solutions and effects of this disclosure clearer, the disclosure will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. Based on the embodiments of this disclosure, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this disclosure.

[0046] The terminology used in the embodiments of this disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of this disclosure. The singular forms “a,” “the,” and “the” as used in the embodiments of this disclosure and the appended claims are also intended to include the plural forms, and “multiple” generally includes at least two unless the context clearly indicates otherwise.

[0047] It should be understood that the term "and / or" used in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0048] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that an article or device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such an article or device. Without further limitation, an element defined by the phrase "comprising one" does not exclude the presence of other identical elements in the article or device that includes said element.

[0049] Cleaning equipment achieves cleaning through the rotation of a roller brush. During this rotation, the brush moves axially. Existing axial limiting mechanisms for roller brushes are often quite large, with related products typically taking the form of brush covers or gates. Their working principle involves an interference-fit bearing or bearing-type structural component on the brush shaft with zero axial contact, restricting the axial movement of the bearing and thus the axial movement of the brush body. However, this type of structure is bulky, requiring numerous components and occupying significant product space, increasing costs and reducing the maximization of functionality, ultimately failing to maximize cleaning effectiveness from a spatial perspective.

[0050] This disclosure provides a roller brush axial limiting device, a cleaning brush, and an automatic cleaning device. The roller brush axial limiting device includes: a first assembly member configured to output driving force after being connected to a driving device, the first assembly member having a first limiting member rotatably disposed on the first assembly member; and a second assembly member configured to at least partially accommodate the first assembly member and restrict the axial movement of the roller brush, the second assembly member having a second limiting member rotatably disposed on the second assembly member; wherein, after the first assembly member is at least partially assembled on the second assembly member, the first limiting member and the second limiting member cooperate to achieve locking.

[0051] This disclosure improves upon conventional roller brush axial limiting methods by using a first and second limiting component to achieve axial locking of the roller brush, thereby preventing axial movement and reducing the number of structural components in the axial limiting mechanism. This fundamentally lowers production, assembly, and transportation costs. Furthermore, by redesigning the external limiting mechanism and integrating it internally into the roller brush body, this disclosure reduces the space occupied by the axial limiting mechanism, thereby increasing the ground interference of the cleaning functional components and improving cleaning efficiency. Finally, this disclosure allows users to easily assemble and disassemble the brush by pressing a single switch, enhancing user efficiency and overall user satisfaction.

[0052] The optional embodiments of this disclosure are described in detail below with reference to the accompanying drawings.

[0053] Figure 1 This is a schematic diagram of the structure of an automatic cleaning device according to an exemplary embodiment. Figure 2 for Figure 1 A bottom-view structural diagram of an automatic cleaning device. (Example) Figure 1 and Figure 2 As shown, the automatic cleaning equipment can be a vacuum cleaning robot, a mopping / brushing robot, a window-climbing robot, etc. This automatic cleaning equipment can include a mobile platform 1000, a sensing system 2000, a control system (not shown), a drive system 3000, an energy system (not shown), a human-machine interaction system 4000, and a cleaning module 5000. Among them:

[0054] The mobile platform 1000 can be configured to automatically move along a target direction on an operating surface. The operating surface can be the surface to be cleaned by the automatic cleaning device. In some embodiments, the automatic cleaning device can be a mopping robot, in which case the automatic cleaning device works on the ground, and the ground is the operating surface; the automatic cleaning device can also be a window cleaning robot, in which case the automatic cleaning device works on the outer surface of the building's glass, and the glass is the operating surface; the automatic cleaning device can also be a pipe cleaning robot, in which case the automatic cleaning device works on the inner surface of the pipe, and the inner surface of the pipe is the operating surface. For purely illustrative purposes, the following description in this application uses a mopping robot as an example.

[0055] In some embodiments, the mobile platform 1000 can be an autonomous mobile platform or a non-autonomous mobile platform. An autonomous mobile platform means that the mobile platform 1000 can automatically and adaptively make operational decisions based on unexpected environmental inputs; a non-autonomous mobile platform cannot adaptively make operational decisions based on unexpected environmental inputs, but can execute predetermined programs or operate according to certain logic. Accordingly, when the mobile platform 1000 is an autonomous mobile platform, the target direction can be determined autonomously by the automatic cleaning equipment; when the mobile platform 1000 is a non-autonomous mobile platform, the target direction can be set by the system or manually.

[0056] The sensing system 2000 includes a position determination device (not shown in the figure) located above the mobile platform 1000, a buffer (not shown in the figure) located in the forward part of the mobile platform 1000, a rotation sensor (not shown in the figure), an ultrasonic sensor (not shown in the figure), an infrared sensor (not shown in the figure), a magnetometer (not shown in the figure), an accelerometer (not shown in the figure), a gyroscope (not shown in the figure), an odometer (not shown in the figure), and other sensing devices located at the bottom of the mobile platform, providing the control system with various position information and motion status information of the machine.

[0057] For ease of description, the following directional definitions are used: Automatic cleaning equipment can be calibrated using three mutually perpendicular axes: the horizontal axis (Y), the front-to-back axis (X), and the vertical axis (Z). The direction indicated by the arrow on the front-to-back axis (X) is labeled "backward," and the direction opposite to the arrow on the front-to-back axis (X) is labeled "forward." The horizontal axis (Y) is essentially along the width of the automatic cleaning equipment; the direction indicated by the arrow on the horizontal axis (Y) is labeled "leftward," and the direction opposite to the arrow on the horizontal axis (Y) is labeled "rightward." The vertical axis (Z) extends upward from the bottom surface of the automatic cleaning equipment. Figure 1 As shown, the direction along the front-rear axis X is defined as the second direction, such as forward or backward; the direction perpendicular to the second direction in the horizontal plane is defined as the first direction, such as left or right.

[0058] The control system (not shown in the figure) is located on the circuit board within the mobile platform 1000. It includes a computing processor, such as a central processing unit or application processor, that communicates with non-transitory memory (e.g., hard disk, flash memory, random access memory). The application processor is configured to receive environmental information sensed by the multiple sensors from the sensing system, obstacle information fed back by the location determination device, etc., and use a positioning algorithm, such as SLAM, to create a real-time map of the environment in which the automatic cleaning equipment is located. Based on the environmental information and the environmental map, it autonomously determines a driving path and then controls the drive system 3000 to perform forward, backward, and / or turning operations based on the autonomously determined driving path. Furthermore, the control system can also determine whether to activate the cleaning module 5000 to perform cleaning operations based on the environmental information and the environmental map.

[0059] The drive system 3000 can execute drive commands to maneuver the automatic cleaning equipment across the ground based on specific distance and angle information, such as x, y, and θ components. The drive system 3000 includes drive wheel assemblies and can control both the left and right wheels simultaneously. For more precise control of the machine's movement, the drive system 3000 preferably includes both a left drive wheel assembly and a right drive wheel assembly. The left and right drive wheel assemblies are symmetrically arranged along a transverse axis defined by the moving platform 1000. To enable the automatic cleaning equipment to move more stably or with greater mobility on the ground, the automatic cleaning equipment may include one or more steering components. These steering components can be driven wheels or drive wheels, and their structural forms include, but are not limited to, swivel wheels. The steering components may be located in front of the drive wheel assemblies.

[0060] The energy system (not shown in the diagram) includes rechargeable batteries, such as nickel-metal hydride (NiMH) and lithium-ion batteries. The rechargeable batteries may be connected to a charging control circuit, a battery pack charging temperature detection circuit, and a battery undervoltage monitoring circuit. These circuits are then connected to a microcontroller control circuit. The main unit connects to a charging station via charging electrodes located on the side or bottom of the device for charging.

[0061] The Human-Machine Interface System 4000 includes buttons on the main control panel for user function selection; it may also include a display screen and / or indicator lights and / or a speaker, which show the user the current machine status or available functions; and it may include a mobile client application. For path-navigation cleaning equipment, the mobile client can display a map of the equipment's environment and its location, providing users with richer and more user-friendly functions.

[0062] like Figure 2As shown, the cleaning module 5000 includes a dustbin, a fan, and a main brush module. The main brush module sweeps debris from the floor to the suction port between the main brush module and the dustbin, where it is then drawn into the dustbin by the suction generated by the fan. The dust removal capability of a robotic vacuum cleaner can be characterized by its dust pickup efficiency (DPU). DPU is affected by the airflow utilization rate of the air duct formed by the suction port, dustbin, fan, air outlet, and connecting components, and is influenced by the type and power of the fan, making it a complex system design issue. Compared to ordinary plug-in vacuum cleaners, improved dust removal capability is more significant for energy-constrained automatic cleaning equipment. This is because improved dust removal capability directly and effectively reduces energy requirements. In other words, a machine that could clean 80 square meters on a single charge can now clean 180 square meters or even more. Furthermore, the reduced number of charging cycles significantly increases battery life, reducing the frequency of battery replacements for users. More intuitively and importantly, the improvement in dust removal ability is the most obvious and important user experience, and users will directly draw conclusions about whether the sweeping or wiping is clean.

[0063] like Figure 2 As shown, a cleaning module 5000 is provided at the bottom of the mobile platform 1000. The cleaning module 5000 is configured to clean the operating surface. The cleaning module 5000 includes a drive unit, a roller brush frame, and a roller brush 5100 assembled within the roller brush frame. The drive unit provides a forward or reverse driving force, which is applied to the roller brush 5100 through a multi-stage gear set. The roller brush 5100 rotates under the action of the driving force to clean the operating surface, or it rotates under the action of the driving force to collect dust.

[0064] Specifically, such as Figure 3As shown, this embodiment of the present disclosure provides an axial limiting device for a roller brush, connected to at least one end of the roller brush, comprising: a first assembly member 5200, configured to output driving force after being connected to a driving device of a cleaning module 5000; optionally, the first assembly member 5200 is configured to be connected to the output end of a multi-stage gear set of the driving device; the first assembly member 5200 has a first limiting member 5210, which is rotatably disposed on the first assembly member 5200; and a second assembly member 5300, configured to at least partially accommodate the first assembly member 5200 and restrict the axial movement of the roller brush 5100; the second assembly member 5300 has a second limiting member 5310, which is rotatably disposed on the second assembly member 5300; wherein, after the first assembly member 5200 is at least partially assembled to the second assembly member 5300, the first limiting member 5210 and the second limiting member 5310 cooperate to achieve locking. After the first assembly component 5200 is assembled onto the second assembly component 5300, as follows: Figure 4 , Figure 5 As shown, the first limiting member 5210 and the second limiting member 5310 are locked within the second assembly member 5300 and maintained in a locked state by the elastic member 5340.

[0065] refer to Figure 3 , Figure 4 , Figure 5 It is understood that the axial limiting device for the roller brush provided in this disclosure maintains a tight axial connection with the roller brush. Through the cooperation of the first and second limiting components, the roller brush can be axially locked inside, thereby preventing axial movement and reducing the number of structural components in the axial limiting mechanism. This fundamentally reduces production, assembly, and transportation costs. Because the axial limiting device is located inside the roller brush, the space occupied by the axial limiting mechanism is reduced, thereby increasing the amount of interference between the roller brush and the ground, and thus increasing cleaning efficiency.

[0066] In some embodiments, such as Figure 5 and Figure 6 As shown, the first assembly component 5200 includes an insertion part, and the second assembly component 5300 includes a receiving cavity 5390. The insertion part and the receiving cavity 5390 have matching shapes. After the insertion part is inserted into the receiving cavity 5390, the first assembly component 5200 and the second assembly component 5300 are assembled.

[0067] In some embodiments, such as Figure 5 and Figure 6As shown, the first assembly component 5200 includes a first receiving portion 5250, and the first limiting member 5200 includes a first locking portion 5211, which is rotatably disposed in the first receiving portion 5250; the second assembly component 5300 includes a second receiving portion 5320, and the second limiting member 5300 includes a second locking portion 5311, which is rotatably disposed in the second receiving portion 5320; wherein, after the first assembly component 5200 is at least partially assembled to the second assembly component 5300, the first locking portion 5211 and the second locking portion 5311 cooperate to achieve locking.

[0068] In some embodiments, such as Figure 5 , 6 As shown, the first receiving portion 5250 has an arc-shaped structure, and the first locking portion 5211 has an arc-shaped structure with the same curvature as the first receiving portion 5250, thereby ensuring that the first locking portion 5211 can rotate freely within the first receiving portion 5250. In some embodiments, the second receiving portion 5320 has an arc-shaped structure, and the second locking portion 5311 has an arc-shaped structure with the same curvature as the second receiving portion 5320, thereby ensuring that the second locking portion 5311 can rotate freely within the second receiving portion 5320. In some embodiments, the curvatures of the first receiving portion 5250, the first locking portion 5211, the second receiving portion 5320, and the second locking portion 5311 are approximately the same. This allows the first assembly component 5200 to be assembled onto the second assembly component 5300, aligning the first receiving portion 5250 and the second receiving portion 5320. The first locking portion 5211 can rotate into the second receiving portion 5320, and the second locking portion 5311 can rotate into the first receiving portion 5250, thus achieving axial locking. Optionally, the first receiving portion 5250 and the second receiving portion 5320 are semi-circular arc structures, and the first locking portion 5211 and the second locking portion 5311 are hemispherical structures. Of course, the first receiving portion 5250 and the second receiving portion 5320 can also be elliptical or other arc-shaped structures, and the first locking portion 5211 and the second locking portion 5311 can also be elliptical or other arc-shaped structures; there are no strict limitations on this.

[0069] In some embodiments, such as Figure 5 and Figure 6As shown, the first assembly component 5200 includes a first through groove 5260, which connects the first receiving portion 5250 and the outside of the first assembly component 5200; the first limiting member 5210 includes a first protrusion 5212, which is configured to extend out of the first through groove 5260. When it is necessary to unlock the first assembly component 5200 and the second assembly component 5300, the first protrusion 5212 is pushed from the outside to the inside along the axial direction. The first protrusion 5212 rotates, thereby driving the first locking portion 5211 to rotate, until the contact surfaces of the first locking portion 5211 and the second locking portion 5311 are in a horizontal state, and then it is unlocked. Then, the roller brush 5100 is pulled so that the second assembly component 5300 and the roller brush 5100 are pulled out from the first assembly component 5200 together. Optionally, the diameter of the first through groove 5260 near the first receiving portion 5250 is smaller than the diameter away from the first receiving portion 5250, so that the outer side of the first protrusion 5212 has a larger movement space. Optionally, the first protrusion 5212 is integrally formed with the first locking portion 5211 or is formed separately, wherein the first protrusion 5212 has a pressing portion that protrudes from the outer side of the first through groove 5260 for the user to manipulate.

[0070] In some embodiments, such as Figure 5 and Figure 6As shown, the second assembly member 5300 includes a second through groove 5330, which connects to the second receiving portion 5320; the second limiting member 5310 includes a second protrusion 5312, which is configured to extend out of the second through groove 5330. When it is necessary to unlock the first assembly member 5200 and the second assembly member 5300, the first protrusion 5212 is pushed axially from the outside to the inside, causing the first protrusion 5212 to rotate, thereby driving the first locking portion 5211 to rotate. The first locking portion 5211 drives the second locking portion 5311 to rotate until the contact surfaces of the first locking portion 5211 and the second locking portion 5311 are in a horizontal state, and then unlocking occurs. Then, the roller brush 5100 is pulled so that the second assembly member 5300 and the roller brush 5100 are pulled out of the first assembly member 5200 together. Afterward, the second locking portion 5311 rotates to an inclined state under the pulling force of the elastic member 5340. Optionally, the diameter of the second through groove 5330 near the second receiving portion 5320 is smaller than the diameter away from the second receiving portion 5320, so that the outer side of the second protrusion 5312 has a larger rotational movement space. Optionally, the second protrusion 5312 is integrally formed or separately formed with the second locking portion 5311, wherein the second protrusion 5312 has a connection notch for connecting with the elastic member 5340, the connection notch facing away from the elastic member 5340. Optionally, when the second protrusion 5312 is rotated to the leftmost end, the opening of the connection notch still faces away from the elastic member 5340 to prevent the elastic member 5340 from dislodging.

[0071] In some embodiments, such as Figures 3-6 As shown, the second assembly component 5300 further includes: a positioning member 5360, which is disposed at one end of the second assembly component 5300 away from the second limiting member 5310, and has an opening facing away from the second limiting member 5310; and an elastic member 5340, which is connected between the positioning member 5360 and the second protrusion 5312, and is configured to provide a locking force to the second limiting member 5310. The elastic member 5340 can be any element with elastic function, such as a spring or elastic rope, and always has a tensile force to tighten the second limiting member 5310.

[0072] In some embodiments, such as Figure 6As shown, the first assembly member 5200 includes a first pushing part 5270, which can be an inclined surface. It is configured such that when the second assembly member 5300 is axially inserted into the first assembly member 5200, the first pushing part 5270 pushes against the inclined plane of the second limiting member 5310 so that it rotates and engages with the first limiting member 5210 to achieve locking. The second assembly member 5300 includes a second pushing part 5380, which can be an inclined surface. The second pushing part 5380 is configured such that when the first assembly member 5200 is inserted into the second assembly member 5300, it pushes against the inclined plane of the first limiting member 5210 so that it rotates and engages with the second limiting member 5310 to achieve locking.

[0073] In some embodiments, such as Figure 6 As shown, the second assembly component 5300 also includes a second limiting disk 5370, which is disposed on the end face of the second assembly component 5300 facing the first assembly component 5200. The second limiting disk 5370 has a diameter larger than the body of the second assembly component 5300, or the second limiting disk 5370 has a diameter larger than the inner diameter of the roller brush 5100, so that when the second assembly component 5300 is assembled into the roller brush 5100, it is locked with the end of the roller brush 5100, thereby restricting the axial movement of the roller brush.

[0074] In some embodiments, such as Figures 5-6 As shown, the second limiting disc 5370 includes a recessed portion 5371; the first assembly member 5200 includes a first limiting disc 5240. After the first assembly member 5200 is assembled to the second assembly member 5300, the first limiting disc 5240 is assembled to the recessed portion 5371. Optionally, after the first limiting disc 5240 is assembled to the recessed portion 5371, it is approximately flush with the surface of the second limiting disc 5370, so that the first assembly member 5200 is engaged in the recessed portion 5371.

[0075] In some embodiments, such as Figures 5-6 As shown, the first assembly component 5200 further includes an adapter 5230, which is disposed on the side of the first assembly component 5200 away from the first limiting member 5210. The adapter 5230 has a polygonal prism structure or a staggered structure. The adapter 5230 is used to connect with the drive device or the gearbox output shaft of the drive device, receive the driving force of the drive device to rotate, and drive the first assembly component 5200, the second assembly component 5300, and the roller brush 5100 to rotate.

[0076] In some embodiments, such as Figure 3As shown, the second assembly component 5300 further includes at least one limiting ridge 5350, the limiting ridge 5350 extends axially along the second assembly component 5300, and the inner sidewall of the roller brush 5100 has a groove corresponding to the limiting ridge 5350. After the limiting ridge 5350 is inserted along the groove, the second assembly component 5300 is assembled on the roller brush 5100 and limited in the circumferential direction.

[0077] In some embodiments, the second assembly component is integrally formed with the roller brush, or forms a non-removable structure, or forms a detachable but fixedly connected structure. In this case, the assembly or disassembly of the roller brush 5100 can be completed simply by assembling or disassembling the second assembly component 5300. The structure is simple and the operation is convenient.

[0078] like Figure 7 As shown, a schematic diagram of the second assembly component 5300 being assembled into the first assembly component 5200 is given. The specific process is as follows: Figure 7 As shown in (a), the second assembly member 5300 is axially fitted into the first assembly member 5200. At this time, the second pushing part 5380 of the second assembly member 5300 contacts the inclined plane of the first limiting member 5210. As the first assembly member 5200 continues to be inserted into the second assembly member 5300, the second pushing part 5380 pushes against the inclined plane of the first limiting member 5210 and rotates it until the horizontal plane of the first locking part 5211 rotates from inclined to horizontal and then enters the second assembly member 5300. Figure 7 As shown in (b); as the second assembly member 5300 continues to be fitted into the first assembly member 5200 axially, the first pushing portion 5270 of the first assembly member 5200 contacts the inclined plane of the second limiting member 5310, and as the second assembly member 5300 continues to be fitted into the first assembly member 5200 axially, the first pushing portion 5270 pushes against the inclined plane of the second limiting member 5310, causing it to rotate until the horizontal plane of the second locking portion 5311 rotates from inclined to horizontal, as shown in (b); Figure 7 As shown in (b); when the planes of the first locking part 5211 and the second locking part 5311 are aligned, under the pull of the elastic member 5340, the first locking part 5211 rotates into the second receiving part 5320, and the second locking part 5311 rotates into the first receiving part 5250, until the second protrusion 5312 abuts against the side of the second through groove 5330 near the elastic member 5340, finally achieving the locking of the first limiting member 5210 and the second limiting member 5310, as shown in (b); Figure 7 As shown in (c), at this time the first protrusion 5212 is also rotated to a position that is roughly flush with the second limiting plate 5370, so as to avoid affecting the first assembly component 5200 to be inserted into the second assembly component 5300 along the axial direction.

[0079] like Figure 8As shown, a schematic diagram of the unlocking of the first assembly component 5200 and the second assembly component 5300 is given. The specific process is as follows: Press the first protruding part 5212 forcefully in the direction of the roller brush, so that the contact surface of the first locking part 5211 and the second locking part 5311 rotates from an inclined state to a horizontal state, as shown. Figure 8 As shown in (a), at this time, the roller brush 5100 and the second assembly component 5300 can be pulled axially until the first assembly component 5200 and the second assembly component 5300 are separated. At this time, the second limiting member 5310 rotates from a horizontal state to an inclined state under the pulling force of the elastic member 5340, as shown in (a). Figure 8 As shown in (b).

[0080] In some embodiments, this application also provides a cleaning brush, including the roller brush axial limiting device as described in any of the above embodiments. The specific structure of the roller brush is referred to in related technologies and will not be described in detail here.

[0081] In some embodiments, this application also provides an automatic cleaning device, including a roller brush or cleaning brush as described in the above embodiments. Other structures of the automatic cleaning device will not be described in detail here.

[0082] Finally, it should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the systems or apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the descriptions are relatively simple, and relevant parts can be referred to the method section.

[0083] The above embodiments are only used to illustrate the technical solutions of this disclosure, and are not intended to limit it. Although this disclosure has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this disclosure.

Claims

1. A brushroll axial stop device connected to at least one end of a brushroll, characterized in that, The application relates to a rolling brush axial position limiting device. The first assembly component is configured to output driving force after being connected with a driving device, and the first assembly component is provided with a first limiting piece which is rotatably arranged on the first assembly component. The second assembly component is configured to at least partially contain the first assembly component to limit axial movement of the rolling brush, and the second assembly component is provided with a second limiting piece which is rotatably arranged on the second assembly component. The first assembly component comprises an insertion part, the second assembly component comprises a containing cavity, the insertion part and the containing cavity have matched shapes, the first assembly component is assembled with the second assembly component after the insertion part is inserted into the containing cavity, and the first limiting piece and the second limiting piece are locked after the first assembly component is at least partially assembled in the second assembly component. The first assembly component comprises a first containing part, the first limiting piece comprises a first locking part, and the first locking part is rotatably arranged on the first containing part. The second assembly component comprises a second containing part, the second limiting piece comprises a second locking part, and the second locking part is rotatably arranged on the second containing part. The first locking part and the second locking part are locked after the first assembly component is at least partially assembled in the second assembly component. The first containing part is an arc structure, the first locking part is an arc structure with the same curvature as the first containing part, and / or the second containing part is an arc structure, and the second locking part is an arc structure with the same curvature as the second containing part. The curvatures of the first containing part, the first locking part, the second containing part and the second locking part are substantially the same.

2. The rolling brush axial position limiting device according to claim 1, wherein The first assembly component comprises a first pushing part configured to push the second limiting piece to be locked with the first limiting piece. The second assembly component comprises a second pushing part configured to push the first limiting piece to be locked with the second limiting piece.

3. The rolling brush axial position limiting device according to claim 1, wherein The first assembly component comprises a first through groove which is communicated with the first containing part. The first limiting piece comprises a first extending part configured to extend from the first through groove.

4. The rolling brush axial position limiting device according to claim 1, wherein The second assembly component comprises a second through groove which is communicated with the second containing part. The second limiting piece comprises a second extending part configured to extend from the second through groove.

5. The rolling brush axial stop of claim 4, wherein, The second assembly component further comprises: A positioning piece arranged at one end of the second assembly component away from the second limiting piece. An elastic piece connected between the positioning piece and the second extending part and configured to provide locking force to the second limiting piece.

6. The rolling brush axial stop of claim 1, wherein, The second assembly component further comprises a second limiting disc arranged at an end surface of the second assembly component facing the first assembly component and configured to limit axial movement of the rolling brush.

7. The axial limiting device of the rolling brush according to claim 6, wherein the second limiting disc comprises a recess; the first assembly component comprises a first limiting disc, and the first limiting disc is assembled in the recess after the first assembly component is assembled in the second assembly component. the first assembly component further comprises an adapting part arranged on a side of the first assembly component away from the first limiting part.

8. The rolling brush axial stop of claim 1, wherein, the adapting part is a multi-prism structure or a key structure.

9. The rolling brush axial stop of claim 8, wherein, the second assembly component further comprises at least one limiting ridge extending along the axial direction of the second assembly component and configured to limit the rolling brush in the circumferential direction after the second assembly component is assembled in the rolling brush.

10. The rolling brush axial stop of claim 1, wherein, the second assembly component is integrally formed with the rolling brush.

11. The rolling brush axial stop of claim 1, wherein, An automatic cleaning device comprising the axial limiting device of the rolling brush according to any one of claims 1 to 11.

12. A cleaning brush characterized by 13. An automatic cleaning device comprising the cleaning brush according to claim 12. ​

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