Cleaning head, vacuum cleaner, and cleaning system

Abstract

Disclosed in the present invention are a cleaning head, a vacuum cleaner, and a cleaning system. The cleaning head comprises a housing, the housing being configured to move over a surface to be cleaned, and the housing defining a fluid passage, characterized in that the housing further defines a suction chamber in fluid communication with the fluid passage and a sweeping chamber in fluid communication with the suction chamber. The suction chamber and the sweeping chamber are in fluid communication by means of at least one communication opening. The cleaning head further comprises a sweeping device configured to sweep said surface. The sweeping device comprises a drive motor, a transmission structure, and a sweeping member, the sweeping member being disposed in the sweeping chamber. The drive motor is configured to drive, by means of the transmission structure, the sweeping member to move along a movement trajectory, the movement trajectory comprising a first segment and a second segment. In the first segment, the sweeping member is spaced apart from said surface. In the second segment, the sweeping member is in contact with said surface so as to sweep dirt on said surface toward the communication opening.

Description

Cleaning heads, vacuum cleaners and cleaning systems Technical Field

[0001] This invention relates to the field of cleaning equipment technology, and more particularly to a cleaning head, a vacuum cleaner, and a cleaning system. Background Technology

[0002] Vacuum cleaners generally include a roller brush, the outer surface of which is equipped with wiping elements such as bristles or leather strips. The roller brush can rotate at high speed around its own axis and clean the surface to be cleaned by wiping elements.

[0003] High-speed rotating roller brushes can effectively improve cleaning ability. However, when the surface to be cleaned contains relatively long hair, the hair will quickly get tangled on the high-speed rotating roller brush. Once the hair is tangled on the roller brush, it will not only affect the cleaning performance, but also require the user to actively clean it. Summary of the Invention

[0004] To address the shortcomings of the aforementioned technologies, this invention provides a cleaning head and vacuum cleaner that can effectively remove hair from surfaces to be cleaned and prevent hair from getting tangled on the cleaning components.

[0005] On one hand, this application provides a cleaning head including a housing for moving on a surface to be cleaned, the housing defining a fluid channel.

[0006] The housing further defines a first cavity, which is in fluid communication with the fluid channel;

[0007] A cleaning device is used to clean the surface to be cleaned. The cleaning device includes a drive motor, a transmission structure, and a cleaning component. The drive motor drives the cleaning component to move along a motion trajectory through the transmission structure. The motion trajectory includes a first segment and a second segment. In the first segment, the cleaning component leaves the surface to be cleaned, and in the second segment, the cleaning component contacts the surface to be cleaned.

[0008] During the motion trajectory, the cleaning component always faces the surface to be cleaned.

[0009] Optionally, the cleaning component and part of the transmission structure are disposed inside the first cavity, while the drive motor and the remaining part of the transmission structure are disposed outside the first cavity.

[0010] Optionally, the first cavity includes a suction cavity and a cleaning cavity, and the suction cavity and the cleaning cavity are in fluid communication through at least one communication port.

[0011] In a second aspect, this application provides a cleaning head including a housing for moving on a surface to be cleaned, the housing defining a fluid channel, and the housing further defining a suction chamber in fluid communication with the fluid channel and a cleaning chamber in fluid communication with the suction chamber.

[0012] The suction chamber and the cleaning chamber are in fluid communication through at least one communication port;

[0013] A cleaning device is used to clean the surface to be cleaned. The cleaning device includes a drive motor, a transmission structure, and a cleaning component. The cleaning component is disposed in the cleaning cavity. The drive motor is used to drive the cleaning component to move along a motion trajectory through the transmission structure. The motion trajectory includes a first segment and a second segment. In the first segment, the cleaning component leaves the surface to be cleaned. In the second segment, the cleaning component contacts the surface to be cleaned to sweep the dirt on the surface to be cleaned toward the connecting port.

[0014] Optionally, the transmission structure includes a reduction mechanism and an output mechanism; the input end of the reduction mechanism is connected to the output shaft of the drive motor, and the output end of the reduction mechanism is connected to the output mechanism; the output mechanism is used to drive the cleaning component to move along the motion trajectory.

[0015] Optionally, the reduction mechanism includes a primary belt reducer and a secondary belt reducer. The input end of the primary belt reducer is driven to the output shaft of the drive motor, the output end of the primary belt reducer is driven to the input end of the secondary belt reducer, and the output end of the secondary belt reducer is driven to the output mechanism.

[0016] Optionally, the output mechanism includes a first output component and a second output component. The first output component includes a first output shaft and a first output member and a second output member located at both ends of the first output shaft, respectively. The second output component includes a second output shaft and a third output member and a fourth output member located at both ends of the second output shaft, respectively. The output end of the reduction mechanism is connected to the first output shaft and / or the second output shaft in a transmission connection.

[0017] Optionally, the transmission structure further includes a first link and a second link, and the cleaning component is connected to the output mechanism via the first link and the second link; the first output component and the third output component jointly drive the first link; the second output component and the fourth output component jointly drive the second link.

[0018] Optionally, a counterweight is provided on the first output shaft and / or the second output shaft.

[0019] Optionally, when the cleaning member moves within the second section, at least a portion of the cleaning member is located directly below the output mechanism in the vertical direction.

[0020] Optionally, the transmission structure includes a first transmission group, which includes a first eccentric wheel, a first connecting rod connected to the first eccentric wheel, and a first guide structure. The first eccentric wheel rotates to drive the first connecting rod to move relative to the first guide structure.

[0021] Optionally, the first guide structure includes a support rod, and the first connecting rod is provided with a stroke groove corresponding to the support rod. The support rod and the stroke groove cooperate with each other to limit the movement trajectory of the first connecting rod.

[0022] Optionally, the transmission structure further includes a second transmission group, which includes a second eccentric wheel, a second connecting rod connected to the second eccentric wheel, and a second guide structure. The second eccentric wheel rotates to drive the second connecting rod to move relative to the second guide structure.

[0023] Optionally, part of the transmission structure is located above the suction chamber.

[0024] Optionally, the height of the suction chamber is less than the height of the cleaning chamber in the vertical direction.

[0025] Optionally, the cleaning component includes a bracket and a wiping strip mounted on the bracket, the length of which is greater than the length of the cleaning cavity, so that the wiping strip protrudes from the side wall of the housing.

[0026] Optionally, the cleaning component includes a bracket and a wiping strip mounted on the bracket, the length of which is greater than the length of the cleaning cavity, so that the wiping strip protrudes from the side wall of the housing.

[0027] Optionally, the transmission structure is at least partially disposed in front of the fluid channel along the direction of movement of the cleaning head.

[0028] Thirdly, this application provides a vacuum cleaner.

[0029] It includes a suction motor for generating suction airflow and the aforementioned cleaning head.

[0030] Fourthly, this application provides a cleaning system comprising a vacuum cleaner as described above and a base station for docking the vacuum cleaner.

[0031] This application provides a cleaning head, a vacuum cleaner, and a cleaning system. The cleaning head includes a housing for moving over a surface to be cleaned. The housing defines a fluid channel, and is characterized in that it further defines a suction chamber and a cleaning chamber in fluid communication with the fluid channel. The suction chamber and the cleaning chamber are in fluid communication through at least one connecting port. The cleaning head also includes a cleaning device for cleaning the surface. The cleaning device includes a drive motor, a transmission structure, and a cleaning component. The cleaning component is disposed within the cleaning chamber. The drive motor drives the cleaning component to move along a motion trajectory via the transmission structure. The motion trajectory includes a first segment and a second segment. In the first segment, the cleaning component leaves the surface to be cleaned. In the second segment, the cleaning component contacts the surface to be cleaned to sweep dirt from the surface towards the connecting port. The cleaning component only contacts the surface to be cleaned in the second segment of the motion trajectory, sweeping dirt towards the connecting port. Not contacting the surface in the first segment effectively prevents hair and other debris from becoming entangled in the cleaning component.

[0032] This application also discloses a cleaning head, which includes a housing for moving on a surface to be cleaned, and the housing defines a fluid channel. The housing also defines a first cavity, which is in fluid communication with the fluid channel. The cleaning head further includes a cleaning device for cleaning the surface, the cleaning device including a drive motor, a transmission structure, and a cleaning component, the drive motor driving the cleaning component to move along a motion trajectory via the transmission structure. The cleaning component and part of the transmission structure are disposed inside the first cavity, while the drive motor and the remaining part of the transmission structure are disposed outside the first cavity. Disposing part of the transmission structure outside the first cavity effectively reduces the space of the first cavity and improves suction power. Attached Figure Description

[0033] Figure 1 is a schematic diagram of the structure of a sweeping robot in one embodiment of this application;

[0034] Figure 2 is a structural schematic diagram of an upright vacuum cleaner in one embodiment of this application;

[0035] Figure 3 is a schematic diagram of the structure of a handheld vacuum cleaner in one embodiment of this application;

[0036] Figure 4 is a schematic diagram of a cleaning head that can be installed on a handheld vacuum cleaner in one embodiment of this application;

[0037] Figure 5 is a schematic diagram of the cleaning head shown in Figure 4 after the outer shell is hidden (including the connecting cover).

[0038] Figure 6 is a structural schematic diagram of the cleaning head shown in Figure 4 from another angle;

[0039] Figure 7 is a schematic diagram of the cleaning head shown in Figure 4 after the outer shell is hidden (excluding the connecting cover).

[0040] Figure 8 is a schematic diagram of the cleaning head shown in Figure 4 after the outer shell is hidden (excluding the connecting cover).

[0041] Figure 9 is a schematic diagram of the cleaning head after the upper and lower outer shells are hidden, as shown in Figure 4.

[0042] Figure 10 is a cross-sectional view along the AA direction in Figure 4;

[0043] Figure 11 is a schematic diagram showing the movement trajectory of the cleaning components as the cleaning head moves forward.

[0044] Figure 12 is a schematic diagram of the structure of a cleaning system according to an embodiment of this application;

[0045] Figure 13 is a schematic diagram of the cleaning head in one embodiment;

[0046] Figure 14 is a schematic diagram of the cleaning head shown in Figure 13 after the upper shell is removed;

[0047] Figure 15 is a schematic diagram of the cleaning head shown in Figure 14 after the mounting bracket is removed;

[0048] Figure 16 is a schematic diagram of the cleaning head in another embodiment (which can be installed on a robot vacuum cleaner).

[0049] Figure 17 is a structural schematic diagram from another angle (showing the cleaning chamber) in one embodiment;

[0050] Figure 18 is a cross-sectional view along the AA direction in Figure 4;

[0051] Figure 19 is a diagram of the running trajectory of the cleaning component in one embodiment;

[0052] Figure 20 is a schematic diagram of the cleaning device in one embodiment;

[0053] Figure 21 is a schematic diagram of the structure from another angle;

[0054] Figure 22 is a schematic diagram of a cleaning head (using a different transmission structure) in another embodiment;

[0055] Figure 23 is a structural schematic diagram of Figure 22 from another angle;

[0056] Figure 24 is a schematic diagram of the cleaning device in another embodiment;

[0057] Figure 25 is a schematic diagram of the cleaning head at different angles in another embodiment. Detailed Implementation

[0058] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0059] It should be noted that if the embodiments of this application involve directional indication, the directional indication is only used to explain the relative positional relationship and movement of each component in a specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0060] Furthermore, if the embodiments of this application involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0061] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art will understand the specific meaning of the above terms in this application based on the specific circumstances.

[0062] Referring to Figures 1-3, a vacuum cleaner 100 is disclosed, which includes a suction motor for generating suction airflow and a suction pipe for guiding the suction airflow. The suction pipe is in fluid communication with the fluid channel 13 of the cleaning head 102 (refer to Figure 10). The vacuum cleaner 100 can be an autonomous cleaning device such as a robotic vacuum cleaner (refer to Figure 1). The vacuum cleaner 100 can also be an upright vacuum cleaner (refer to Figure 2) or a handheld vacuum cleaner (refer to Figure 3). The vacuum cleaner can be powered by its own battery pack or by connecting to a municipal power supply via a power cord. The working principle and related structure of the vacuum cleaner 100 (except for the cleaning head 102 disclosed in this application) are technologies familiar to those skilled in the art and will not be described in detail here. The following focuses on describing the cleaning head 102 disclosed in this application.

[0063] Referring to Figure 4-11, a cleaning head 102 is disclosed. The cleaning head 102 includes a housing 1 for moving on a surface to be cleaned. Multiple rollers may be mounted on the housing 1. The housing 1 may be assembled from multiple injection-molded parts. Referring to Figures 6 and 10, the housing 1 defines a fluid channel 13 for guiding the flow of suction airflow, and the housing 1 also defines a first cavity in fluid communication with the fluid channel 13. The first cavity may be a single cavity. The first cavity may also include a suction cavity 14 and a cleaning cavity 15 in fluid communication. The cleaning cavity 15 and the fluid channel 13 are located on opposite sides of the suction cavity 14. Along the forward direction of the cleaning device, the cleaning cavity 15 may be located either in front of or behind the suction cavity 14, as long as the suction cavity 14 is located between the cleaning cavity 15 and the fluid channel 13, and the suction cavity 14 is responsible for fluidly communicating the fluid channel 13 and the cleaning cavity 15.

[0064] Referring to Figures 6 and 10, the housing 1 defines a suction chamber 14 in fluid communication with the fluid channel 13 and a cleaning chamber 15 disposed in front of the suction chamber 14. The suction chamber 14 and the cleaning chamber 15 are in fluid communication through at least one connecting port 16. The connecting port 16 can be T-shaped, with its cross-section gradually decreasing along the airflow direction, which can effectively improve cleaning ability. When the vacuum cleaner 100 is a robotic vacuum cleaner, the cleaning head 102 can be integrated into the body 101 of the robotic vacuum cleaner, or it can be detachably installed on the robotic vacuum cleaner. When the cleaning head 102 is integrated with the body 101 of the robotic vacuum cleaner, the housing 1 of the cleaning head 102 is part of the body 101 of the robotic vacuum cleaner. When the vacuum cleaner 100 is an upright vacuum cleaner, the cleaning head 102 is generally pivotally connected to the body 101 of the cleaning device, and the user controls the vacuum cleaner 100 by operating the body 101. When the vacuum cleaner 100 is a handheld vacuum cleaner, the cleaning head 102 can be connected via a connecting rod. When the vacuum cleaner 100 is working, the cleaning device 2 operates within the cleaning chamber 15, cleaning at least some of the dirt to the connecting port 16. The suction airflow generated by the cleaning device draws the dirt from the connecting port 16 into the suction chamber 14, and then the dirt in the suction chamber 14 is recovered into the collection box through the fluid channel 13. In the embodiment shown in Figure 10, the height of the suction chamber 14 is less than the height of the cleaning chamber 15 in the vertical direction. Limiting the suction chamber 14 to a smaller size effectively reduces suction loss and improves cleaning ability.

[0065] Referring to Figures 4-11, this application discloses a new cleaning device 2 to effectively avoid hair entanglement in traditional roller brushes. The cleaning device 2 is used to clean surfaces to be cleaned. The cleaning device 2 (as shown in Figure 8) includes a drive motor 21, a transmission structure 22, and a cleaning component 25 (non-roller structure). The cleaning component 25 is disposed within the cleaning chamber 15. The drive motor 21 drives the cleaning component 25 along a closed trajectory via the transmission structure 22. The trajectory includes a first segment and a second segment. In the first segment (refer to the first, third, and fourth figures in Figure 11), the cleaning component 25 leaves the surface to be cleaned. In the second segment (refer to the second figure in Figure 11), the cleaning component 25 contacts the surface to be cleaned, sweeping dirt from the surface towards the connecting opening 16. The trajectory can be a circular trajectory, an elliptical trajectory, a rectangular trajectory, or an irregular graphic trajectory. Different trajectories can be achieved through different transmission structures 22. Transmission structures 22 for achieving elliptical and rectangular trajectories are relatively common and will not be described in detail here. This application details a transmission structure 22 that can realize irregular graphic motion trajectories.

[0066] Referring to Figure 4-10, the housing 1 includes an upper outer shell 17 and a lower outer shell 18, with an installation space 28 defined between them. The drive motor 21 can be a common motor, which can be controlled by a controller after being powered on. The controller can be a common circuit board. The controller can control the start-up, shutdown, speed, and direction of rotation of the drive motor 21, etc., which will not be described in detail here. As shown in Figure 7-9, the transmission structure 22 includes a first transmission group 23, which includes a first eccentric wheel 231, a first connecting rod 232 connected to the first eccentric wheel 231, and a first guide structure 233. The rotation of the first eccentric wheel 231 drives the first connecting rod 232 to move relative to the first guide structure 233. The drive motor 21 can directly drive the first eccentric wheel 231 to rotate. Of course, in order to increase or decrease the speed, the drive motor 21 can also be connected to the first eccentric wheel 231 via gears or belts. The embodiment shown in the figure uses a gear structure to reduce the speed to drive the first eccentric wheel 231 to rotate. Of course, in other embodiments, if the speed of the drive motor 21 is insufficient, the speed can be increased by a gear structure. A connecting shaft 26 is provided on the side of the first eccentric wheel 231. The connecting shaft 26 (refer to Figure 11) is offset from the axis of the first eccentric wheel 231. The first end of the first connecting rod 232 is rotatably connected to the connecting shaft 26. When the first eccentric wheel 231 rotates, it drives the first end of the first connecting rod 232 to perform a circular motion around the axis of the first eccentric wheel 231. The cleaning component 25 is disposed at the second end of the first connecting rod 232. When the first connecting rod 232 performs a circular motion around the axis of the first eccentric wheel 231, under the guidance of the first guiding structure 233, it drives the cleaning component 25 to move in an irregular shape (non-circular, elliptical, rectangular, or other conventional shapes). This irregular motion trajectory is mainly divided into a first segment and a second segment. When the cleaning component 25 is in the first segment (refer to the first, third, and fourth figures in Figure 11), the cleaning component 25 moves away from the surface to be cleaned. When the cleaning component 25 is in the second segment, it contacts the surface to be cleaned, sweeping the dirt on the surface towards the connecting port 16. Typically, the distance in the second segment is shorter than that in the first segment. Furthermore, in the second segment, the cleaning component 25 moves towards the connecting port 16 (refer to the second figure in Figure 11). In this motion trajectory, the cleaning component itself does not rotate relative to the transmission structure 22; it simply moves along the trajectory under the movement of the transmission structure 22. This allows the dirt on the surface to be cleaned to be swept from front to back (or from back to front) to the connecting port 16, and then sucked into the suction chamber 14. Because the cleaning component 25 only performs a sweeping action in the second section and does not rotate, very little hair gets tangled on the cleaning component 25, which can effectively avoid the problem of hair getting tangled on the cleaning component 25.

[0067] A counterweight can be added to the eccentric wheel in the area opposite to the connecting shaft 26 to reduce noise generated when the eccentric wheel rotates at high speeds. During manufacturing, the eccentric wheel can be directly formed such that the end with the connecting shaft 26 is lighter, and the other end along the diameter is heavier. The eccentric wheel can be a conventional disc-shaped structure. Alternatively, the eccentric wheel can be made into other shapes according to actual needs, such as teardrop or fan-shaped, with the connecting shaft designed at the lighter end to reduce noise.

[0068] Referring to Figures 8-11, the guiding structure includes a support rod 26, and a connecting rod with a stroke groove 253 corresponding to the support rod 26. The support rod 26 and the stroke groove 253 cooperate to limit the movement trajectory of the connecting rod. Specifically, the support rod 26 does not move relative to the housing 1. When the first end of the connecting rod moves under the action of the eccentric wheel, the entire connecting rod moves relative to the support rod 26 under the guidance of the stroke groove 253, thereby driving the cleaning component 25 to perform a non-circular motion (as shown in Figure 11). In Figure 11, the arrow near the eccentric wheel indicates the rotation direction of the eccentric wheel; the arrow near the cleaning component 25 indicates the movement direction of the cleaning component 25. The support rod 26 can be fixedly installed to the housing 1. The support rod 26 can also be installed to the housing 1 rotatably around its own axis via bearings or other devices. When the connecting rod moves relative to the support rod 26, if the support rod 26 remains stationary, friction and / or collision will occur between the connecting rod and the support rod 26. If the support rod 26 can rotate around itself, then when the connecting rod moves relative to the support rod 26, the support rod 26 itself will also rotate, which can effectively reduce friction and reduce noise.

[0069] In other embodiments, the support rod 26 can be omitted, and the guiding structure can use an elastic structure to support the connecting rod to the housing 1. For example, multiple springs can be used to install the connecting rod to the housing 1, or a hollow annular rubber component (with a certain degree of elasticity) can be used to support the connecting rod to the housing 1. In this way, the movement trajectory of the connecting rod can be guaranteed while reducing noise.

[0070] Referring to Figure 4-10, part of the transmission structure 22 spans above the suction chamber 14. The lower outer casing 18 has a through-hole for the connecting rod to pass through. Part of the connecting rod is located within the mounting space 28, while another part passes through the through-hole and extends into the cleaning chamber 15. When the first chamber is a separate chamber, part of the connecting rod is located within the first chamber, and the other part is located within the mounting space 28. To improve suction performance, the through-hole of the lower outer casing 18 can be sealed. The aforementioned elastic structure can also be provided at the through-hole, supporting the connecting rod while simultaneously sealing the through-hole to reduce or prevent airflow from the mounting space 28 into the first chamber. Sealing the through-hole also prevents dust from entering the mounting space.

[0071] Referring to Figure 7-10, the cleaning component 25 can be a single, integral wiping strip 252. The cleaning component 25 may also include a bracket 251 and a wiping strip 252 mounted on the bracket 251. To improve edge cleaning, the length of the wiping strip 252 is greater than the length of the cleaning cavity 15, so that the wiping strip 252 protrudes from the side wall 12 of the housing 1. To achieve unilateral edge cleaning, one end of the wiping strip 252 protrudes from the corresponding side wall 12 of the housing 1. The length of the bracket 251 is less than the length of the cleaning cavity 15. Thus, when performing edge cleaning, the bracket 251 can avoid contact with the side surface to be cleaned; only the wiping strip 252 needs to contact the surface. The wiping strip 252 can be detachably mounted to the bracket 251 for easy replacement. Alternatively, both ends of the wiping strip 252 can protrude from the side wall 12, allowing edge cleaning to be performed from both ends.

[0072] Referring again to Figures 7 and 8, to ensure smooth movement of the cleaning component 25, the transmission structure 22 further includes a second transmission group 24. The second transmission group 24 includes a second eccentric wheel 241, a second connecting rod 242 connected to the second eccentric wheel 241, and a second guide structure 243. The second eccentric wheel 241 rotates to drive the second connecting rod 242 to move relative to the second guide structure 243. The second transmission group 24 is basically the same as the first transmission group 23, except that its placement is spaced apart. The first transmission group 23 and the second transmission group 24 are respectively located on both sides of the fluid channel 13 along the length of the cleaning component 25. Symmetrical arrangement along the fluid channel 13 improves the stability of the transmission structure 22 and reduces noise. To ensure consistent movement of the first connecting rod 232 and the second connecting rod 242, a connecting cover plate 27 (as shown in Figure 5) is provided between the two connecting rods. The connecting cover plate 27 can fix the two connecting rods into a single unit, allowing them to move together. Of course, in other embodiments, the two connecting rods can also be integrally formed as a single unit.

[0073] Referring to Figure 12, a cleaning system 300 is disclosed, which includes a vacuum cleaner or a base station 200 for docking with the vacuum cleaner. The base station 200 is provided with a dust bag for collecting dirt transferred from the vacuum cleaner. Figures 1 and 2 disclose other forms of vacuum cleaners. Referring to Figures 1-3, a vacuum cleaner 100 is disclosed, which includes a suction motor for generating suction airflow and a suction pipe for guiding the suction airflow. The suction pipe is in fluid communication with the fluid channel 13 of the cleaning head 102. The vacuum cleaner 100 can be an autonomous cleaning device such as a robotic vacuum cleaner (refer to Figure 1). The vacuum cleaner 100 can also be an upright vacuum cleaner (refer to Figure 2) or a handheld vacuum cleaner (refer to Figure 3). The vacuum cleaner 100 can be powered by its own battery pack or by connecting to a municipal power supply via a power cord. The working principle and related structure of the vacuum cleaner 100 (except for the cleaning head 102 disclosed in this application) are technologies familiar to those skilled in the art and will not be described in detail here. The following section focuses on describing the cleaning head 102 disclosed in this application.

[0074] Referring to Figures 13-19, a cleaning head 102 according to another embodiment is disclosed. The cleaning head 102 includes a housing 1 for moving on a surface 400 to be cleaned. Multiple rollers may be mounted on the housing 1. The housing 1 may be assembled from multiple injection-molded parts. Referring to Figure 18, the housing 1 defines a fluid channel 13 for guiding the flow of suction airflow, and the housing 1 also defines a first cavity in fluid communication with the fluid channel 13; the first cavity may be a single cavity. The first cavity may further include a suction cavity 14 and a cleaning cavity 15 in fluid communication. The cleaning cavity 15 and the fluid channel 13 are located on opposite sides of the suction cavity 14. Along the forward direction of the cleaning device, the cleaning cavity 15 may be located either in front of or behind the suction cavity 14, as long as the suction cavity 14 is located between the cleaning cavity 15 and the fluid channel 13, and the suction cavity 14 is responsible for fluidly communicating the fluid channel 13 and the cleaning cavity 15.

[0075] Referring to Figures 13-19, the housing 1 defines a suction chamber 14 in fluid communication with the fluid channel 13 and a cleaning chamber 15 disposed in front of the suction chamber 14. The suction chamber 14 and the cleaning chamber 15 are in fluid communication through at least one connecting port 16. The connecting port 16 can be trapezoidal, with its cross-section gradually decreasing along the airflow direction. This design can effectively improve cleaning ability. When the vacuum cleaner 100 is a robotic vacuum cleaner, the cleaning head 102 can be integrated into the body 101 of the robotic vacuum cleaner, or it can be detachably installed on the robotic vacuum cleaner. When the cleaning head 102 is integrated with the body 101 of the robotic vacuum cleaner, the housing 1 of the cleaning head 102 is part of the body 101 of the robotic vacuum cleaner. When the vacuum cleaner 100 is an upright vacuum cleaner, the cleaning head 102 is generally pivotally connected to the body 101 of the cleaning device, and the user controls the vacuum cleaner 100 by operating the body 101. When the vacuum cleaner 100 is a handheld vacuum cleaner, the cleaning head 102 can be connected via a connecting rod. When the vacuum cleaner 100 is working, the cleaning device 2 operates within the cleaning chamber 15, cleaning at least some of the dirt to the connecting port 16. The generated suction airflow draws the dirt from the connecting port 16 into the suction chamber 14, and then the dirt in the suction chamber 14 is recovered into the collection box through the fluid channel 13. In the embodiment shown, the height of the suction chamber 14 is less than the height of the cleaning chamber 15 in the vertical direction. Limiting the suction chamber 14 to a smaller size effectively reduces suction loss and improves cleaning ability.

[0076] Referring to Figures 13-25, this application discloses a new cleaning device 2 to effectively avoid hair entanglement in traditional roller brushes. The cleaning device 2 is used to clean a surface 400 to be cleaned. The cleaning device 2 includes a drive motor 21, a transmission structure 22, and a cleaning component 25 (non-roller structure). The cleaning component 25 is disposed within a cleaning chamber 15. The drive motor 21 drives the cleaning component 25 along a motion trajectory 103 via the transmission structure 22. The motion trajectory 103 is a closed trajectory, including a first segment and a second segment. In the first segment (refer to the first, second, and fourth figures in Figure 19), the cleaning component 25 leaves the surface 400 to be cleaned. In the second segment (refer to the third figure in Figure 19), the cleaning component 25 contacts the surface 400 to be cleaned, sweeping dirt from the surface 400 towards the connecting opening 16. The motion trajectory 103 can be a circular trajectory, an elliptical trajectory, a rectangular trajectory, or an irregular graphic trajectory. Different motion trajectories 103 can be achieved through different transmission structures 22. The wiping strip 252 (brush bristles or brush strip) on the cleaning component 25 can extend out of the side wall 12 of the housing to clean the baseboard or corners.

[0077] The cleaning head 102 will be described in detail below with reference to the accompanying drawings, focusing on the transmission structure 22. The housing 1 includes an upper outer shell 17 and a lower outer shell 18, with an installation space 28 defined between them. The drive motor 21 can be a common motor, which can be controlled by a controller after being powered on. The controller can be a common circuit board. The controller can control the start-up, shutdown, speed, and direction of rotation of the drive motor 21, etc., which will not be described in detail here.

[0078] Referring to Figures 13-15, the transmission structure 22 includes a reduction mechanism 31 and an output mechanism 32. A mounting bracket 271 is used to mount the reduction mechanism 31 and the output mechanism 32. To further reduce the noise and vibration generated by the cleaning device 2, a shock-absorbing structure is provided between the mounting bracket 271 and the housing 1. The mounting bracket 271 can be a single, integral bracket, or it can consist of two separate brackets, one supporting the reduction mechanism 31 and the other supporting the output mechanism 32.

[0079] Referring to Figures 15-25, the reduction mechanism 31 includes a primary belt reducer 311 and a secondary belt reducer 312. The input end of the primary belt reducer 311 is drivenly connected to the output shaft of the drive motor 21. The output end of the primary belt reducer 311 is drivenly connected to the input end of the secondary belt reducer 312. The output end of the secondary belt reducer 312 is drivenly connected to the output mechanism 32. Referring to Figure 16, the output mechanism 32 includes a first output assembly 321 and a second output assembly 322. The first output assembly 321 includes a first output shaft 323 and a first output member 324 and a second output member 325 located at both ends of the first output shaft 323, respectively. The second output assembly 322 includes a second output shaft 327 and a third output member 328 and a fourth output member 329 located at both ends of the second output shaft 327, respectively. The output end of the secondary belt reducer 312 is drivenly connected to the first output shaft 323 and / or the second output shaft 327. The transmission structure 22 also includes a first connecting rod 232 and a second connecting rod 242. The cleaning component 25 is connected to the output mechanism 32 via the first connecting rod 232 and the second connecting rod 242. The first output component 324 and the third output component 328 jointly drive the first connecting rod 232; the second output component 325 and the fourth output component 329 jointly drive the second connecting rod 242, thereby driving the cleaning component 25 to move along the motion trajectory 103. A reduction mechanism 31, especially a belt reduction mechanism 31, is provided upstream of the output mechanism 32, which can effectively reduce the mutual transmission of vibration between the drive motor 21 and the output mechanism 32, thereby reducing noise and reducing the vibration amplitude of the entire cleaning head 102. At the same time, without additional speed reduction within the output mechanism 32, the stability of the output mechanism 32 can be maximized.

[0080] Specifically, referring to Figures 20 or 24, the first-stage belt reducer 311 includes a belt and gears located at both ends of the belt. This reduction structure initially reduces the speed output by the drive motor 21. The second-stage belt reducer 312 includes a belt and gears located at both ends of the belt to achieve further speed reduction. The output gear of the second-stage belt reducer 312 is fixedly connected to the first output shaft 323 to drive the first output shaft 323 to rotate. The first output shaft 323 drives the first output component 324 and the second output component 325 at both ends. The first output component 324 and the second output component 325 are gear structures, and the third output component 328 and the fourth output component 329 are also gear structures. The first output component 324 meshes with the third output component 328, and the second output component 325 meshes with the fourth output component 329. The structure of the output component is described below. The output component can be a wheel-shaped structure with a short shaft 244 extending from its outer surface. The short shaft 244 is offset from the rotation center of the output component, and its motion trajectory 103 is a circular motion around the rotation center of the output component. The first connecting rod 232 is rotatably mounted on the short shaft 244 of the first output component 324 and the third output component 328. To improve rotational accuracy, the first connecting rod 232 and the short shaft 244 can be connected via bearings; other common connection methods can also be used. The second connecting rod 242 is mounted on the second output component 325 and the fourth output component 329 in the same manner. Since the first output component 324, the second output component 325, the third output component 328, and the fourth output component 329 rotate synchronously, and the positions of the four short shafts 244 remain relatively consistent, when the output component rotates, it drives the first connecting rod 232 and the second connecting rod 242 to move. At this time, the movement of the first connecting rod 232 and the second connecting rod 242 drives the cleaning component 25 to move along the predetermined motion trajectory 103.

[0081] Referring to Figures 22-24, in this embodiment, the output end of the two-stage belt reducer 312 simultaneously drives the first output shaft 323 and the second output shaft 327 via an output shaft. Gears are mounted on the output shafts, and corresponding gear structures are mounted on the first output shaft 323 and the second output shaft 327, respectively. Synchronous transmission is achieved through the combination of different gears.

[0082] Referring to Figures 20 and 21, the first link 232 and the second link 242 can be T-shaped or similar in shape. With this structure, when the cleaning component 25 is located within the second section (refer to Figure 19), at least part of the cleaning component 25 is positioned directly below the output mechanism 32 in the vertical direction (considering only the vertical positional relationship, not the horizontal positional relationship). This arrangement effectively reduces the vibration generated by the entire cleaning device 2. To mitigate the vibration generated by the cleaning device 2, counterweights 19 are provided on the first output shaft 323 and / or the second output shaft 327 (refer to Figures 21 and 22).

[0083] Referring to Figures 22-24, the first link 232 and the second link 242 can also be long strip structures with curved front ends. With this structure, the motion trajectory 103 in the horizontal direction (considering only the positional relationship in the horizontal direction and not the positional relationship in the vertical direction) is located in front of the output mechanism 32, which can reduce the overall height of the cleaning head 102.

[0084] Although the embodiments of this application have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for this application. For those skilled in the art, other modifications can be easily made. Therefore, without departing from the general concept defined by the claims and their equivalents, this application is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A cleaning head comprising a housing for movement on a surface to be cleaned, the housing defining a fluid channel, characterized in that, The housing further defines a first cavity, which is in fluid communication with the fluid channel; A cleaning device is used to clean the surface to be cleaned. The cleaning device includes a drive motor, a transmission structure, and a cleaning component. The drive motor drives the cleaning component to move along a motion trajectory through the transmission structure. The motion trajectory includes a first segment and a second segment. In the first segment, the cleaning component leaves the surface to be cleaned, and in the second segment, the cleaning component contacts the surface to be cleaned. During the motion trajectory, the cleaning component always faces the surface to be cleaned.

2. The cleaning head as described in claim 1, characterized in that, The cleaning component and part of the transmission structure are disposed inside the first cavity, while the drive motor and the remaining part of the transmission structure are disposed outside the first cavity.

3. The cleaning head as described in claim 1, characterized in that, The first cavity includes a suction cavity and a cleaning cavity, and the suction cavity and the cleaning cavity are in fluid communication through at least one communication port.

4. A cleaning head comprising a housing for movement over a surface to be cleaned, the housing defining a fluid passageway, characterised in that, The housing further defines a suction chamber in fluid communication with the fluid channel and a cleaning chamber in fluid communication with the suction chamber; The suction chamber and the cleaning chamber are in fluid communication through at least one communication port; A cleaning device is used to clean the surface to be cleaned. The cleaning device includes a drive motor, a transmission structure, and a cleaning component. The cleaning component is disposed in the cleaning cavity. The drive motor is used to drive the cleaning component to move along a motion trajectory through the transmission structure. The motion trajectory includes a first segment and a second segment. In the first segment, the cleaning component leaves the surface to be cleaned. In the second segment, the cleaning component contacts the surface to be cleaned to sweep the dirt on the surface to be cleaned toward the connecting port.

5. The cleaning head as described in any one of claims 1-4, characterized in that, wherein The transmission structure includes a reduction mechanism and an output mechanism; the input end of the reduction mechanism is connected to the output shaft of the drive motor, and the output end of the reduction mechanism is connected to the output mechanism. The output mechanism is used to drive the cleaning component to move along the motion trajectory.

6. The cleaning head as described in claim 5, characterized in that, The reduction mechanism includes a primary belt reducer and a secondary belt reducer. The input end of the primary belt reducer is driven to the output shaft of the drive motor, the output end of the primary belt reducer is driven to the input end of the secondary belt reducer, and the output end of the secondary belt reducer is driven to the output mechanism.

7. The cleaning head as described in claim 5, characterized in that, The output mechanism includes a first output component and a second output component. The first output component includes a first output shaft and a first output member and a second output member located at both ends of the first output shaft, respectively. The second output component includes a second output shaft and a third output member and a fourth output member located at both ends of the second output shaft, respectively. The output end of the deceleration mechanism is connected to the first output shaft and / or the second output shaft in a transmission connection.

8. The cleaning head as described in claim 7, characterized in that, The transmission structure further includes a first link and a second link, and the cleaning component is connected to the output mechanism via the first link and the second link; the first output component and the third output component jointly drive the first link; the second output component and the fourth output component jointly drive the second link.

9. The cleaning head as described in claim 8, characterized in that, A counterweight is provided on the first output shaft and / or the second output shaft.

10. The cleaning head as described in claim 5, characterized in that, When the cleaning component moves within the second section, at least a portion of the cleaning component is located directly below the output mechanism in the vertical direction.

11. The cleaning head as described in any one of claims 1-4, characterized in that, The transmission structure includes a first transmission group, which includes a first eccentric wheel, a first connecting rod connected to the first eccentric wheel, and a first guide structure. The first eccentric wheel rotates to drive the first connecting rod to move relative to the first guide structure.

12. The cleaning head as claimed in claim 11, characterized in that, The first guide structure includes a support rod, and the first connecting rod is provided with a stroke groove corresponding to the support rod. The support rod and the stroke groove cooperate with each other to limit the movement trajectory of the first connecting rod.

13. The cleaning head as claimed in claim 12, characterized in that, The transmission structure further includes a second transmission group, which includes a second eccentric wheel, a second connecting rod connected to the second eccentric wheel, and a second guide structure. The second eccentric wheel rotates to drive the second connecting rod to move relative to the second guide structure.

14. The cleaning head as described in claim 3 or 4, characterized in that, Part of the transmission structure is located above the suction chamber.

15. The cleaning head as described in claim 3 or 4, characterized in that, In the vertical direction, the height of the suction chamber is less than the height of the cleaning chamber.

16. The cleaning head as claimed in claim 1, characterized in that, The cleaning component includes a bracket and a wiping strip mounted on the bracket. The length of the wiping strip is greater than the length of the cleaning cavity, so that the wiping strip protrudes from the side wall of the housing.

17. The cleaning head as described in any one of claims 1-4, characterized in that, The cleaning component includes a bracket and a wiping strip mounted on the bracket. The length of the wiping strip is greater than the length of the cleaning cavity, so that the wiping strip protrudes from the side wall of the housing.

18. The cleaning head as described in any one of claims 1-4, characterized in that, The transmission structure is at least partially located in front of the fluid channel along the direction of movement of the cleaning head.

19. A vacuum cleaner, characterized in that, It includes a suction motor for generating a suction airflow and a cleaning head as described in any one of claims 1-18.

20. A cleaning system, characterized in that, The vacuum cleaner as described in claim 19 and the base station for docking the vacuum cleaner.

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