Power device for swimming pool cleaning robot and swimming pool cleaning robot

Abstract

The utility model discloses a power device for a swimming pool cleaning robot and the swimming pool cleaning robot, the power device comprises a base body part and a moving part, and a water injection nozzle is formed in the base body part; a plurality of through flow guide openings are formed in the moving part, each flow guide opening has a corresponding flow guide direction, the moving part can move relative to the base body part so that the flow guide openings can be adjusted to correspond to the water spraying openings in position, the medium spraying direction of the water spraying openings can be controlled according to the flow guide directions, and at least two corresponding flow guide directions in the flow guide openings are different. According to the swimming pool cleaning robot, by arranging the moving part, the number of added parts is small, the structure is simple, and light weight of the swimming pool cleaning robot can be achieved. The multiple flow guide openings are formed in the moving part, the driving direction of the power device is enriched, the corresponding flow guide direction can be set according to the actual working condition, and the complexity of the structure of the power device is reduced while the working condition adaptability of the driving device is improved.

Description

Technical Field

[0001] This application relates to the field of cleaning robots, and in particular to a power unit for a pool cleaning robot and the pool cleaning robot itself. Background Technology

[0002] In related technologies, pool cleaning robots typically move using their own power units. However, these power units often provide only a single type of power, which is insufficient to meet the robot's need for flexible movement on or underwater. Furthermore, the limited power design of pool robot power units in these technologies fails to meet the demands of various working conditions, hindering power switching between different scenarios and thus impacting the robot's mobility.

[0003] Therefore, designing a power unit that can provide power to meet the power requirements of different working conditions has become an urgent technical problem to be solved in this field. Utility Model Content

[0004] This application aims to address at least one of the technical problems existing in the prior art. To this end, one objective of this application is to provide a power unit for a pool cleaning robot, which can switch power directions, has a compact structure, and offers multiple power directions to meet the power requirements of the pool cleaning robot under different working conditions.

[0005] The following is a brief description of the power unit for a pool cleaning robot according to this application.

[0006] The power unit includes a base and a moving part. A water nozzle is formed on the base. A plurality of through-flow guides are formed on the moving part. Each of the flow guides has a corresponding flow direction. The moving part can move relative to the base to adjust the position of the flow guides to correspond to the position of the water nozzle, and control the medium ejection direction of the water nozzle according to the flow direction. At least two of the plurality of flow guides have different flow directions.

[0007] According to the power unit of this application, the movement direction of the pool cleaning robot is adjusted by moving the moving part relative to the base part. Compared with adjusting the orientation of the spray nozzle, the number of additional parts added by setting up the moving part is smaller, the structure is simpler, and it helps to achieve a lightweight design for the pool cleaning robot. Multiple guide ports are provided on the moving part, enriching the driving directions of the power unit. The corresponding guide direction can be set according to the actual working conditions, which helps to improve the adaptability of the drive unit to working conditions while reducing the complexity of the power unit structure.

[0008] According to some embodiments of this application, the multiple flow guides correspond to different flow directions, giving the power unit more power directions and meeting the power requirements of the pool cleaning robot under different working conditions.

[0009] According to some embodiments of this application, the moving part translates or rotates relative to the base part, so that the guide ports with different guide directions provided on the moving part correspond to the water spray nozzles, so as to switch the different guide directions of the power device to meet the power requirements of the pool cleaning robot under different working conditions.

[0010] According to some embodiments of this application, a plurality of flow guides are formed on the moving part in a first direction. The moving part translates relative to the base part in the first direction to align the flow guides with the spray nozzle. The plurality of flow guides are arranged in a first direction in a linear direction, and the movement direction between the moving part and the base part is linear. The stable movement trajectory of the moving part helps improve the accuracy of switching between different flow guides.

[0011] According to some embodiments of this application, the base portion is constructed as a first plate, on which the water spray nozzle is disposed; the moving portion is constructed as a second plate, the second plate being arranged parallel to the first plate, and a plurality of the flow guides are formed on the second plate. The second plate is translated relative to the first plate to align the flow guides with the water spray nozzle. Both the first plate and the second plate are constructed as flat plate-like structures and arranged parallel to each other, occupying little space and exhibiting stable relative movement.

[0012] According to some embodiments of this application, the power unit further includes: a driving member, which has a power output end and is disposed on one of the first plate and the second plate; and a transmission member, which is disposed on the other of the first plate and the second plate, and the transmission member cooperates with the output end to drive the first plate to translate or rotate relative to the second plate. By utilizing the power of the driving member and the cooperation between the transmission member, the first plate and the second plate are driven. The driving member and the transmission member are respectively disposed on the first plate and the second plate, further improving the compactness of the structure, increasing the integration, and reducing the size of the power unit.

[0013] According to some embodiments of this application, a gear is provided on the output end, and the transmission component is constructed as a rack that cooperates with the gear. The rack extends in the arrangement direction of the plurality of guide ports so as to realize the relative movement between the moving part and the base part through the cooperation of the gear and the rack, thereby ensuring the stability of the relative movement between the moving part and the base part.

[0014] According to some embodiments of this application, the driving member is disposed on the side of the first plate away from the second plate, the output end of the driving member is configured as an output shaft, the output shaft passes through the first plate, the gear is disposed on the side of the first plate facing the first plate and connected to the output shaft; the rack is formed on the edge of the second plate, making the overall structure of the power device more compact.

[0015] According to some embodiments of this application, the power device further includes: a first guide portion, which is fixed relative to the first plate; and a second guide portion, which is disposed on the second plate. The first guide portion and the second guide portion cooperate to limit the direction of movement of the first plate relative to the second plate. The first guide portion and the second guide portion cooperate with each other to limit the relative direction of movement between the first plate and the second plate, thereby improving the stability of the relative movement between the first plate and the second plate.

[0016] According to some embodiments of this application, the power unit further includes: a face shell, on which a receiving cavity is formed and an outlet communicating with the receiving cavity, the base portion is fixed to the face shell, and the moving portion can move relative to the face shell and drive the guide port to face the outlet. While ensuring the effective operation of the power unit, the compactness of the structure is further improved.

[0017] The following is a brief description of a pool cleaning robot according to another embodiment of this application.

[0018] The pool cleaning robot includes a robot body and a power unit. The power unit is located in the robot body and is constructed as described in any of the above embodiments. The power unit is small in size and compact in structure, and can selectively spray media in opposite directions, thus enabling the pool cleaning robot to have different travel directions. Furthermore, the compact structure and few parts of the power unit contribute to the miniaturization of the pool cleaning robot.

[0019] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0020] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0021] Figure 1 This is a schematic diagram of the power device according to an embodiment of the present invention from one perspective;

[0022] Figure 2This is a schematic diagram of the power device according to one embodiment of the present invention from another perspective;

[0023] Figure 3 This is a schematic diagram of the structure of the base portion in a power device according to an embodiment of the present invention;

[0024] Figure 4 This is a schematic diagram of the structure of the face shell of a power device according to an embodiment of the present invention.

[0025] Figure 5 This is a schematic diagram of the inclination angle of the guide surface according to an embodiment of the present invention;

[0026] Figure 6 This is a partial cross-sectional view of the faceplate according to an embodiment of the present invention;

[0027] Figure 7 This is a schematic diagram of a pool cleaning robot according to an embodiment of the present invention.

[0028] Figure label:

[0029] Power unit 1

[0030] Base 11, Spray nozzle 111

[0031] Moving part 12, flow guide 121, flow guide 122, flow guide rib 123, flow guide surface 124, driving part 13, gear 131.

[0032] Transmission component 14, rack 141,

[0033] Guide groove 151,

[0034] Second guide part 16, connecting shaft 161, rolling element 162

[0035] Faceplate 17, nozzle 171,

[0036] Pool cleaning robot 2, robot body 21. Detailed Implementation

[0037] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0038] The following is for reference. Figures 1-7 A power unit 1 for an underwater robot according to an embodiment of the present invention is described.

[0039] like Figure 1As shown, the power unit 1 according to this application is used for a pool cleaning robot 2. The power unit 1 includes a base part 11 and a moving part 12. The base part 11 serves as the mounting base for the power unit 1 and can be connected to the pool cleaning robot 2. A water nozzle 111 is formed on the base part 11, which can be used to spray water and use the reaction force of the water flow to drive the pool cleaning robot 2 to move. The moving part 12 has multiple through guide ports 121, each guide port 121 having a corresponding guide direction. The moving part 12 can move relative to the base part 11 to adjust the position of the guide port 121 to correspond to the water nozzle 111, and control the medium spraying direction of the water nozzle 111 according to the guide direction, so that the power unit 1 can provide power to the pool cleaning robot 2 in different directions.

[0040] In this application, the moving part 12 guides the medium sprayed from the spray nozzle 111 by setting the guide port 121. Each of the multiple guide ports 121 has its corresponding guide direction, so that the spray nozzle 111 sprays out in the corresponding guide direction after passing through the corresponding guide port 121. The reaction force of the water flow makes the pool cleaning robot 2 have a movement tendency opposite to the direction of medium spraying.

[0041] In the embodiments of this application, the movement direction of the pool cleaning robot 2 is adjusted by utilizing the movement of the moving part 12 relative to the base part 11. Compared to adjusting the orientation of the spray nozzles 111, the number of additional parts added by setting the moving part 12 is smaller, the structure is simpler, and it helps to achieve a lightweight design for the pool cleaning robot 2. Providing multiple flow guides 121 on the moving part 12 increases the driving direction of the power unit 1, allowing the flow guide direction to be set according to the actual working conditions, which helps to simplify the control logic of the power unit 1.

[0042] In related technologies, to achieve multi-directional water spraying, multiple nozzles facing different directions are typically required. This design not only increases the size and complexity of the mobile drive components of the pool cleaning robot, but also raises manufacturing costs and maintenance difficulties. For example, to achieve 360° omnidirectional water spraying, traditional designs may require multiple nozzles, each requiring independent control and connection, making the entire system complex and cumbersome.

[0043] Furthermore, compared to a single water nozzle 111, the power device 1 can achieve multi-directional thrust by adjusting the orientation of the single water nozzle 111, thus avoiding redundant configuration of multiple motors, significantly reducing the overall weight, extending underwater endurance, and achieving weight reduction and efficiency improvement for the pool cleaning robot.

[0044] Furthermore, compared to the traditional nested arrangement of spray nozzles and guide ports, the cooperation between the moving part and the base part in this application eliminates the need for multiple spray nozzles in different directions, resulting in a simpler overall structure. The single spray nozzle design reduces the volume of the base part, making the overall structure of the power unit more compact. The power unit 1 of this application has only one spray nozzle 111. By translating or rotating the moving part 12, different guide ports 121 can be selected to achieve spraying functions in different directions. This design not only reduces the number of parts but also improves the system's integration and reliability.

[0045] Furthermore, since this application achieves the switching of the guide port 121 by setting the relative movement of the moving part 12 and the base part 11, the control method of the relative movement between the moving part 12 and the base part 11 has lower precision requirements. In other words, the structure of the movement form between the moving part 12 and the base part 11 and the adjustment direction required for the power device 1 to adjust the spray direction of the water nozzle 111 is relatively simple. In other words, this application can adjust the spray direction of the water spray medium by controlling the moving part 12 and the base part 11 to move a corresponding distance based on the relative movement between the moving part 12 and the base part 11. The spray direction of the medium in this application is controlled by the guide port 121 provided on the moving part 12, and the spray direction of the guide port 121 is fixed. The guide port 121 will not be affected by the error of the relative movement between the moving part 12 and the base part 11. The solution in this embodiment not only improves the flexibility of adjusting the media ejection direction, but also ensures the accuracy and reliability of the media ejection direction adjustment, and reduces errors caused by the complexity of the mechanical structure.

[0046] It should also be understood that this application achieves the switching of the guide port 121 through the relative movement of the moving part 12 and the base part 11. This design greatly simplifies the control method for adjusting the medium ejection. Since the relative movement between the moving part 12 and the base part 11 is linear or rotational, the requirement for control precision is relatively low, and high-precision movement control can be achieved through a simple motor drive. Therefore, the structure of the power unit proposed in this embodiment not only simplifies the control method of the power unit but also reduces the requirement for control precision, improving the reliability and economy of the system.

[0047] Based on this, the relative movement between the moving part 12 and the base part 11 in this application requires a low precision requirement, and the precision requirements of the corresponding components can be effectively reduced, thereby improving the overall yield of the power unit 1. Compared with the traditional method of controlling the ejection direction of the nozzle, the technical solution of this application improves the accuracy of the medium ejection direction control, effectively improves the yield of the power unit 1, and reduces the production cost of the power unit 1.

[0048] In the above embodiments of this application, among the corresponding flow directions of the plurality of through-holes 121, at least two flow directions of the flow ports 121 may be the same. When at least two flow ports 121 have the same flow direction, the two flow ports 121 may be configured to have different sizes, for example, different diameters, so as to satisfy different flow rates of the ejected medium from different flow ports 121, thereby achieving the power adjustment of the pool cleaning robot 2 by adjusting the ejection velocity of the medium; or at least two flow ports 121 may have different flow directions. By setting at least two flow ports 121 to have different flow directions, the ejection direction of the medium can be adjusted so that the pool cleaning robot 2 has power in different directions.

[0049] In some embodiments, the directions and dimensions of at least two through-flow ports 121 can be exactly the same, which can satisfy the requirement that the other flow port 121 can be used for flow diversion after one flow port 121 is blocked, providing redundancy and safety for the power unit 1 and ensuring the reliability of the pool cleaning robot 2.

[0050] In one specific embodiment, the pool cleaning robot 2 includes three through-flow ports 121, two of which have the same flow direction, and the third through-flow port 121 has a different flow direction. Preferably, the two through-flow ports 121 with the same flow direction can be in a flow direction that is prone to clogging. This ensures that when the pool cleaning robot 2 becomes clogged, it can be replaced by another through-flow port 121 with the same flow direction, thus ensuring the reliability of the pool cleaning robot 2, and also meets the pool cleaning robot 2's need to switch between different power directions.

[0051] In some embodiments of this application, the multiple guide ports 121 correspond to different guide directions, thereby giving the power unit 1 more directions of movement. The moving part 12 in this application is provided with a guide port 121, which is perpendicular to the travel direction of the pool cleaning robot 2. This guide port 121 can be understood as a vertical guide port. The medium flowing out of the vertical guide port provides a reverse force in the vertical direction to the pool cleaning robot 2, satisfying its vertical driving needs, i.e., providing a downward force. Utilizing this reverse force in the vertical direction, the pool cleaning robot 2 can submerge or float, enabling it to handle pools of different shapes and sizes. For example, when cleaning the bottom of the pool, the vertical guide port and the spray nozzle 111 can be aligned by adjusting the moving part 12, thereby providing a reaction force in the vertical direction for the pool cleaning robot 2, making it easier for the pool cleaning robot 2 to dive down until it reaches the bottom of the pool and makes close contact with the bottom surface of the pool, thus achieving the purpose of the pool cleaning robot 2 sticking to the bottom surface of the pool.

[0052] The moving part 12 in this application is provided with another flow guide 121, which is tilted at a certain angle relative to the traveling direction of the pool cleaning robot 2. Because the flow guide 121 is tilted, the reaction force provided to the pool cleaning robot 2 by the reverse-sprayed medium through the flow guide 121 is along the tilt direction of the flow guide 121. This tilt direction can provide the pool cleaning robot 2 with a reaction force in the traveling direction and a reaction force in the vertical direction. The reaction force in the traveling direction can provide the pool cleaning robot 2 with a driving force in the traveling direction, thereby driving the pool cleaning robot 2 to move in the traveling direction, for example, forward. The vertical direction is the direction in which the pool cleaning robot 2 connects with the pool. The reaction force in the vertical direction can provide the pool cleaning robot 2 with a vertical compressive force, which allows the pool cleaning robot 2 to adhere tightly to the bottom or wall of the pool. Therefore, the present application embodiment can provide the pool cleaning robot 2 with reaction forces in both the direction of travel and the vertical direction through the inclined guide port 121, such as forward and downward forces at the same time, thereby achieving the purpose of pushing the pool cleaning robot 2 to move forward close to the pool wall.

[0053] Specifically, the reaction force has a component perpendicular to the direction of travel and a component in the direction of travel of the pool cleaning robot 2, thereby driving the pool cleaning robot 2 to move close to the bottom or side wall of the pool.

[0054] In some embodiments, when controlling the pool cleaning robot 2 to clean the pool, the moving part 12 can be adjusted to align the vertical guide port with the spray nozzle 111, so as to increase the driving force of the pool cleaning robot 2 in the vertical direction by using the vertical guide port 121, and control the pool cleaning robot 2 to accelerate its descent. After the pool cleaning robot 2 sinks to the bottom of the pool, the moving part 12 can be adjusted to align the inclined guide port with the spray nozzle 111, so as to control the pool cleaning robot 2 to move forward along a certain direction of movement along the bottom of the pool by using the inclined guide port 121, thereby achieving the purpose of cleaning the bottom area of ​​the pool by using the pool cleaning robot 2.

[0055] In some embodiments, when cleaning the sidewalls of the pool, the pool cleaning robot 2 can generate a component force perpendicular to the sidewall by adjusting the tilt direction of the guide port 121. This allows the pool cleaning robot 2 to adhere closely to the sidewall for cleaning, and also enables it to adjust its movement direction and posture more flexibly when performing cleaning tasks. It should be understood that this component force not only helps the pool cleaning robot move stably on the sidewall, but also ensures that the cleaning tool maintains appropriate contact pressure with the sidewall, preventing the cleaning part of the pool cleaning robot 2 from separating from the sidewall, thereby improving the cleaning effect.

[0056] Furthermore, the tilted design of the flow guide 121 also improves the working efficiency of the pool cleaning robot 2. Specifically, by reasonably setting the tilt angle, the pool cleaning robot 2 can complete cleaning tasks in multiple directions simultaneously during a single movement, reducing the number of round trips and adjustment time. For example, when cleaning the junction of the pool bottom and side walls, the pool cleaning robot 2 can adjust the tilt direction of the flow guide 121 to generate forces in both the horizontal and vertical directions, thereby cleaning both the bottom and side walls in a single movement and improving cleaning efficiency.

[0057] In some specific embodiments of this application, the tilt angle of the flow guide 121 can be set according to the specific cleaning task and the shape of the pool. For example, for steeper sidewalls, the tilt angle of the flow guide 121 can be set smaller to generate a larger vertical force component; for gentler sidewalls, the tilt angle of the flow guide 121 can be set larger to generate a larger force component in the direction of travel. Based on this, by setting the flow guide 121 to meet the needs of the scenario, the pool cleaning robot 2 can better adapt to various complex cleaning scenarios, improving its versatility and practicality.

[0058] In some embodiments of this application, each of the flow guide ports 121 is provided with a flow guide 122. The flow guide 122 guides the medium passing through the flow guide port 121 to the corresponding ejection direction. By providing the flow guide 122 in the flow guide port 121, the flow of the medium in the flow guide port 121 is disturbed and guided, so that the medium passing through the flow guide port 121 flows in the corresponding flow direction. The flow guide 122 can be a baffle, a grid, etc. By controlling the tilt angle and shape of the baffle, the medium passing through the flow guide 122 flows in the flow direction.

[0059] In some embodiments, the flow guide 122 is configured as a flow deflector, which can be applied to working conditions where a specific flow pattern needs to be generated within the flow guide 121. For example, when the pool cleaning robot 2 needs to flexibly adjust its direction in a complex environment, the flow deflector can ensure that the medium flows in a predetermined direction, thereby improving the mobility of the pool cleaning robot 2.

[0060] In some embodiments, the flow guide 122 is configured as a grid, which can be composed of multiple parallel or intersecting strip structures to effectively disperse the flow of the medium and reduce turbulence and energy loss. It should be understood that the grid design can adjust the spacing, width, and angle of the strip structures as needed to achieve different flow guiding effects. For example, in the flow guide 121 where high flow rate is required, wider grid strips can be designed to reduce medium resistance; while in the flow guide 121 where high-precision flow guiding is required, narrower grid strips can be designed to improve flow guiding accuracy.

[0061] In addition, the grille can effectively prevent hair from getting tangled in the pool and prevent debris in the water from entering the power unit, thus reducing the failure rate of the power unit. In some embodiments, the clogging failure rate based on the grille can be reduced by 70%.

[0062] In some embodiments, the flow guide 122 is configured as a flow guide plate, which can be a planar or curved plate-like structure, installed on the inner wall or center of the flow guide port 121. The flow guide plate can be designed in different shapes, such as circular, rectangular, elliptical, etc., to adapt to different flow guidance requirements. By adjusting the shape and angle of the flow guide plate, the flow direction of the medium can be effectively guided, improving the efficiency and stability of the flow. For example, for a circular flow guide port 121, the flow guide plate can be designed as circular or arc-shaped to reduce turbulence of the medium; while for a rectangular flow guide port 121, the flow guide plate can be designed as rectangular or strip-shaped to improve the uniformity of the flow. This application does not specifically limit this. The flow guide plate is suitable for working conditions that require precise control of the flow direction of the medium. For example, when the pool cleaning robot 2 needs to perform precise cleaning in a narrow space, the flow guide plate can ensure that the medium flows in a predetermined direction, improving cleaning efficiency.

[0063] In some embodiments of this application, the orthographic projection of the guide member 122 at least partially overlaps with that of the guide port 121, and a guide surface 124 for guiding flow is formed on the surface of the guide member 122. The medium sprayed from the nozzle 111 passes through the guide hole, and the guide member 122 can be connected to the external shell, the base part 11, or the moving part 12. That is to say, the connection relationship between the guide member 122 and other components, and the components that fix the guide member 122 to each other, do not limit the guide member 122. However, the relative positional relationship between the guide member 122 and the guide port 121 affects the guiding effect of the guide member 122 on the medium. By setting the guide member 122 to at least partially overlap with the orthographic projection of the guide port 121, the medium will definitely pass through the guide member 122 after passing through the guide port 121. Under the guiding action of the guide member 122, the medium is guided to the corresponding guiding direction.

[0064] It should be understood that by placing the guide element 122 within the orthogonal projection range of the guide port 121, it can be ensured that the medium, after passing through the guide port 121, can effectively contact the guide element 122 and be guided to a predetermined direction. This design not only improves the efficiency of flow guidance but also ensures the stability and reliability of flow guidance. In some embodiments, the overlap area between the guide element 122 and the guide port 121 can be adjusted according to specific operating conditions and requirements. For example, for operating conditions requiring high-precision flow guidance, the overlap area can be increased to improve the accuracy of flow guidance; while for operating conditions requiring high flow rates, the overlap area can be appropriately reduced to reduce the resistance of the medium.

[0065] In some embodiments, the guide surface 124 can be designed as a plane or a curved surface, the specific shape of which depends on the flow direction and the characteristics of the medium. For example, for applications requiring vertical flow guidance, the guide surface 124 can be designed as a vertical plane; for applications requiring inclined flow guidance, the guide surface 124 can be designed as an inclined surface or an arc surface to improve the flow guidance effect on the medium.

[0066] In some embodiments of this application, the flow guide 122 is constructed as a flow guide rib 123. Both ends of the flow guide rib 123 in the extending direction are connected to the inner wall of the flow port 121. The flow guide rib 123 can be integrally formed with the moving part 12. By integrally forming the flow guide rib 123 with the moving part 12, injection molding or 3D printing can be used. This integral forming method reduces the assembly steps and the number of parts in the power unit, improving the system's integration and reliability. Providing the flow guide rib 123 on the inner wall of the flow port 121 ensures that the medium passing through the flow port 121 flows in the corresponding flow direction under the guidance of the flow guide rib 123.

[0067] like Figure 5As shown, in some embodiments of this application, the guide rib 123 has a guide surface 124 formed on at least one side surface in the thickness direction. The angle between the guide surface 124 and the through direction of the guide port 121 is α, where 0° < α < 90°. The guide surface 124 is planar, and the fluid tends to flow along the guide surface 124 after passing through it, thereby guiding the medium passing through the guide port 121 to the corresponding guide direction. The guide direction mentioned here is consistent with the tilt direction of the guide surface 124. The angle of the guide surface 124 is set between 0-90°. The guide surface 124 guides the medium to the front or rear side of the pool cleaning robot 2 and maintains a reverse force perpendicular to the direction of travel of the pool cleaning robot 2, ensuring that the pool cleaning robot 2 can maintain positive pressure with the bottom or side wall of the pool while also propelling the pool cleaning robot 2 forward or backward. The inclination direction of the guide surface 124 is consistent with the flow direction. By adjusting the angle of the guide surface 124, the medium can be guided to the front or rear of the pool cleaning robot 2, while maintaining a counterforce perpendicular to the direction of travel of the pool cleaning robot 2—that is, a vertical squeezing force. This design allows the cleaning robot 2 to maintain positive pressure with the bottom or side walls of the pool, while also propelling it forward or backward. By rationally designing the angle and position of the guide surface 124, stable movement of the pool cleaning robot 2 in different directions can be achieved. For example, multiple guide surfaces 124 can be set to adapt to different working conditions.

[0068] It should be understood that the positive pressure generated in the vertical direction allows the pool cleaning robot 2 to adhere closely to the pool wall, avoiding slippage caused by buoyancy or water flow disturbance, making it particularly suitable for cleaning smooth or sloping pool walls. The opposing force perpendicular to the direction of travel (such as water flow resistance) is partially offset by the guide surface structure, reducing energy loss and improving propulsion efficiency. This achieves a balance between the pool cleaning robot 2's stability against the pool wall and its maneuverability.

[0069] In some embodiments, the guide surface 124 can be configured as an arc-shaped surface. The arc-shaped surface design can smoothly guide the flow of the medium, reduce turbulence and energy loss of the fluid during the guiding process, and improve the guiding efficiency. The curvature of the arc-shaped surface can be adjusted according to specific working conditions and requirements to achieve the best guiding effect.

[0070] It should be understood that, through the above design, the guide ribs 123 and guide surfaces 124 of this application not only optimize the flow direction of the medium and improve the efficiency and performance of the power unit, but also significantly enhance the stability and reliability of the pool cleaning robot 2 in complex environments.

[0071] In some embodiments, the guide surface 124 is constructed as a plane, and multiple parallel guide grooves are provided on the guide surface. By providing guide grooves, the medium can be ensured to flow in a predetermined direction, reducing diffusion and turbulence of the medium on the guide surface 124 and improving the accuracy of the guide flow. For example, in working conditions requiring high flow rate, such as when the pool cleaning robot 2 needs to clean a large area, the guide grooves can reduce the resistance of the medium during the flow process and improve the flow efficiency. By providing guide grooves, the structural stability of the guide surface 124 can also be enhanced, improving the reliability and durability of the system.

[0072] It should be understood that by setting guide grooves on the guide surface 124, the guide ribs 123 of this application can not only optimize the stability of the medium flow, reduce turbulence and energy loss, and improve the guide accuracy, but also enhance structural stability, improve the flexibility and adaptability of the system, and reduce maintenance costs. This design provides a more efficient, flexible, and reliable solution for the pool cleaning robot 2, significantly improving the overall performance of the system.

[0073] In some embodiments of this application, the flow guide 122 is configured as an arc-shaped rib or a spiral rib arranged around the center of the flow guide 121, which can further guide the medium passing through the flow guide 121. For example, the arc-shaped rib or the spiral rib can further concentrate the medium passing through the flow guide 122. For example, the flow guide 122 is configured as a fan blade, thereby guiding the medium and further concentrating it to the center of the flow guide 121, increasing the water flow velocity and enhancing the reverse force.

[0074] In addition, the angle of the guide surface is fixed, eliminating the need for sensors or mechanical adjustment devices, which reduces the failure rate and improves the reliability of the system.

[0075] In some embodiments, when the guide member 122 is constructed as an arc-shaped rib or a spiral rib, an anti-clogging grille can be additionally provided inside the guide port 121. By setting a reasonable spacing between the anti-clogging grilles, hair entanglement in the pool can be effectively prevented, greatly reducing the failure rate. This design not only improves the reliability of the system but also reduces the maintenance cost of the power unit, further enhancing the practicality and economy of the pool cleaning robot 2. In some embodiments, the anti-clogging grille can reduce the failure rate by 70%.

[0076] In some embodiments of this application, the moving part 12 has multiple flow guiding channels, and the outlet of each flow guiding channel forms a flow guiding port 121. The direction of the flow guiding channel extends corresponding to the direction of the medium ejection. In this embodiment, the flow guiding member 122 may not be provided in the flow guiding channel. The medium is guided by the inclination of the flow guiding channel. After entering the flow guiding channel, the medium flows in the direction of the extension of the flow guiding channel. By setting multiple flow guiding channels with different inclination angles, the power device 1 has different flow guiding directions.

[0077] On the one hand, eliminating the guide component 122 within the flow channel reduces the number of parts, lowering material costs and processing complexity. The flow channel's guiding function is achieved solely through its tilt, allowing for an integrated design that reduces assembly steps and the number of components. For example, injection molding or 3D printing technologies can be used to achieve integrated manufacturing of the flow channel, reducing assembly errors and improving production efficiency. By simplifying the flow channel's structure, processing steps and material usage can be reduced, increasing production efficiency and lowering costs.

[0078] On the other hand, reducing the number of guide members 122 reduces dirt adhesion on the smooth inner wall of the flow channel, and combined with the scouring effect of the flowing medium, lowers the maintenance frequency. Specifically, eliminating the guide members 122 eliminates the additional connecting parts on the inner wall of the flow channel, effectively reducing the possibility of medium retention and adhesion within the channel, thereby reducing dirt accumulation. Simultaneously, designing the flow channel with a slightly inclined inner wall allows the medium to impact the smooth inner wall of the flow channel during flow, thus carrying away adhered dirt and reducing the maintenance requirements of the power unit 1.

[0079] According to some embodiments of this application, the inner surface of the guide channel is provided with a first turbulence rib and / or the guide port 121 is provided with a second turbulence rib. In this embodiment, the first and second turbulence ribs in the guide channel can assist the guide channel in guiding the medium, so that the medium passing through the guide channel is further tilted, allowing the power device 1 to have a larger angle of water spray direction, so as to achieve driving in different directions. The first and second turbulence ribs may also not have a guiding function, but only perform a converging function on the medium passing through the guide channel, increasing the water flow velocity and enhancing the directional force.

[0080] In other embodiments, by providing a first flow-deflecting rib on the inner surface of the flow channel and a second flow-deflecting rib at the flow port 121, the flow path of the medium can be further optimized, improving the performance and efficiency of the power unit 1. For example, the first flow-deflecting rib is provided on the inner surface of the flow channel and is used to guide the flow direction of the medium within the flow channel. By adjusting the shape, angle, and position of the first flow-deflecting rib, precise guidance of the medium can be achieved, allowing the medium to flow in a predetermined direction within the flow channel. The first flow-deflecting rib can be designed as a strip, sheet, etc., to adapt to different guiding requirements. For example, for applications requiring high flow rates, the first flow-deflecting rib can be designed as a wider strip to reduce the resistance of the medium; while for applications requiring high-precision flow guidance, the first flow-deflecting rib can be designed as a narrower strip, while increasing the number of first flow-deflecting ribs to improve the accuracy of flow guidance by ensuring sufficient contact with the flow-guiding medium.

[0081] Furthermore, the second turbulence rib is designed to converge the fluid at the flow inlet, achieving a media convergence effect. This causes the media to converge into a single stream within the flow channel, reducing fluid diffusion and turbulence, and improving the efficiency and precision of the flow guidance. This increases the water flow velocity, enhances the directional force, raises the outlet velocity, and strengthens the jet momentum while reducing energy dissipation, thereby lowering the power consumption of the pool cleaning robot 2 and increasing its operating range.

[0082] In some embodiments of this application, the second baffle rib can be designed as a strip that gradually narrows towards the center of the guide port 121. By reducing the area for medium flow, the fluid can form a high-speed jet stream when passing through the guide port 121, enhancing jet momentum and reducing energy loss. By setting the second baffle rib at the guide port 121, combined with the Venturi effect, the power unit 1 of this application can not only improve jet speed and momentum and reduce energy loss, but also improve the stability and reliability of the system. This design provides a more efficient, flexible, and reliable solution for the power unit 1, significantly improving the overall performance of the pool cleaning robot 2.

[0083] Furthermore, if the flow channel itself already has an inclination angle relative to the pool cleaning robot 2 (e.g., α = 15°), the inclination angle (α) of the flow channel is the initial inclination angle of the flow channel relative to the traveling direction of the pool cleaning robot 2. This angle determines the basic flow direction of the medium after entering the flow channel. For example, if the inclination angle of the flow channel is 15°, then the medium will flow along this 15° angle after entering the flow channel. The deflection angle (β) of the baffle ribs is a further deflection angle of the baffle ribs relative to the flow channel. This angle can further adjust the flow direction of the medium, causing it to produce an additional deflection based on the flow channel. For example, if the deflection angle of the baffle ribs is 10°, then the medium will be further deflected by 10° after passing the baffle ribs. Therefore, by adding the inclination angle (α) of the flow channel and the deflection angle (β) of the baffle ribs, a greater overall flow guiding effect can be achieved. For example, if the tilt angle of the flow guide channel is 15° and the deflection angle of the baffle is 10°, then the final combined flow guiding effect is 25°. This design allows for a greater range of water spray direction adjustment even if the tilt angle of the flow guide channel is fixed, through the deflection angle of the baffle.

[0084] It should be understood that the superimposed design of the flow guide channel and the baffle ribs not only enables a wider range of water spray direction adjustment, improving the system's flexibility and adaptability, but also reduces energy loss and improves flow efficiency. This meets the power requirements of the pool cleaning robot 2 in complex environments.

[0085] According to some embodiments of this application, the moving part 12 translates or rotates relative to the base part 11. In order to realize that the guide ports 121 with different flow directions provided on the moving part 12 correspond to the water nozzles 111, so as to switch the different flow directions of the power device 1, the relative translation or rotation between the moving part 12 and the base part 11 realizes the switching. By using the translation or rotation of the moving part 12, the projection of any one of the guide ports 121 provided on the moving part 12 and the water nozzle 111 in the water spraying direction at least partially overlaps, so that the medium sprayed from the water nozzle 111 passes through the guide port 121 and is guided to the corresponding direction.

[0086] It should be understood that the movement mode of the moving part 12 is key to realizing the multi-directional flow guidance of the power unit 1. By controlling the translation or rotation of the moving part 12, different flow guidance directions can be switched, ensuring that the medium is accurately guided to the predetermined direction, avoiding ineffective flow diversion, and thus meeting the needs of the pool cleaning robot 2 under different working conditions.

[0087] In some embodiments, the moving part 12 can be translated and slidably adapted to linearly arranged guide ports 121. By translating the moving part 12, the projections of different guide ports 121 and spray nozzles 111 in the spray direction can at least partially overlap, thereby achieving flow guidance in different directions. The translation distance and direction of the moving part 12 can be adjusted. For conditions where the flow guidance direction needs to be switched in the front-back direction, the moving part 12 can be designed to translate along a straight track in the front-back direction; while for conditions where the flow guidance direction needs to be switched in the left-right direction, the moving part 12 can be designed to translate along a horizontal track in the left-right direction.

[0088] In some embodiments, the moving part 12 can translate and rotate. Applicable to annularly distributed guide ports 121, the translation and rotation of the moving part 12 allows the projections of the annularly distributed guide ports 121 and the spray nozzles 111 in the spray direction to at least partially overlap, thereby achieving 360° omnidirectional flow guidance. For applications requiring switching of the flow direction within a 360° range, the moving part 12 can be designed to rotate around a central axis. Adjusting the rotation angle of the moving part 12 achieves the switching of the flow direction. For applications requiring switching of the flow direction within a specific angular range, the moving part 12 can be designed to rotate within that specific angular range. For example, the guide ports 121 can be configured to be distributed along an arc, and the moving part can translate and rotate within the angular range of the arc-shaped guide ports 121.

[0089] According to some embodiments of this application, a plurality of guide ports 121 are formed on the moving part 12 in a first direction. The moving part 12 translates relative to the base part 11 in the first direction to align the guide ports 121 with the spray nozzles 111. The plurality of guide ports 121 are arranged in a first direction, and the movement direction between the moving part 12 and the base part 11 is a straight line. The movement trajectory of the moving part 12 is stable, which helps to improve the accuracy of the moving part 12 in switching between different guide ports 121.

[0090] In some embodiments, the docking area between the nozzle 111 and the guide port 121 is configured as a straight transition channel, which can effectively avoid channel bending caused by rotation switching, reduce turbulence generation, significantly reduce pressure drop loss, and improve the driving capability of the jet momentum enhancement power device. In some embodiments, the pressure drop loss can be reduced by 20%-25%.

[0091] In some embodiments, the inner wall of the inlet end of the guide port 121 can be configured as a flared section with an increased diameter component in the direction of inlet, so that the medium can smoothly transition when entering the guide port 121 and reduce energy loss. The inner wall of the flow channel of the guide port 121 can be designed to gradually narrow towards the center of the guide port 121, so that the medium can form a high-speed jet flow when entering the guide port 121 and enhance the jet momentum.

[0092] In some embodiments, the relative friction between the moving part 12 and the base part 11 can scrape away dirt adhering to the edge of the guide port 121, similar to a "scraper effect," reducing the frequency of manual cleaning. In other embodiments, the surface of the moving part 12 can be designed to have a high degree of smoothness to enhance the scraping effect. For example, the smoothness of the surface of the moving part 12 can be set to be high so that when the moving part 12 moves relative to the base part 11, the dirt adhering to the surface can be scraped away by the base part 11 without damaging the moving part 12.

[0093] In some embodiments of this application, a plurality of guide ports 121 are formed on the moving part 12 in a circumferential direction. The moving part 12 rotates relative to the base part 11 to align the guide ports 121 with the spray nozzles 111. By arranging a plurality of guide ports 121 in the circumferential direction of the moving part 12, and the plurality of guide ports 121 being arranged around the rotation center of the moving part 12, the moving part 12 can be constructed as a fan shape or a circle. The guide ports 121 are distributed at intervals around the center of the fan shape or circle. During the rotation of the moving part 12 around the center, any one of the guide ports 121 can be directly opposite the spray nozzle 111, thereby achieving different guide ports 121 corresponding to the spray nozzles 111.

[0094] According to some embodiments of this application, the base portion 11 is constructed as a first plate, on which a water nozzle 111 is provided. The moving portion 12 is constructed as a second plate, which is arranged parallel to the first plate. A plurality of guide ports 121 are formed on the second plate. The second plate is translated relative to the first plate to align the guide ports 121 with the water nozzles 111. In some embodiments, the first plate serves as the mounting base for the power device 1, providing stable support for the entire power device 1.

[0095] It should be understood that by constructing the base portion 11 and the moving portion 12 as a first plate and a second plate, respectively, and by arranging the first plate and the second plate in parallel and stacking them in the thickness direction, the space occupied by the power unit 1 is reduced. Furthermore, a sealing device can be provided between the first plate and the second plate to ensure that no leakage occurs during the translation or rotation of the moving portion 12 relative to the base portion 11.

[0096] The first and second plates are arranged parallel to each other, so there is no motion interference during the translation of the first plate relative to the second plate, ensuring the stability of the movement. Furthermore, the process of machining the water spray nozzle 111 on the first plate and the guide port 121 on the second plate is simple and has a high yield.

[0097] In some embodiments of this application, the power device 1 further includes a driving member 13 and a transmission member 14. The driving member 13 is provided with a power output end and is disposed on one of the first plate and the second plate. The transmission member 14 is disposed on the other of the first plate and the second plate. The transmission member 14 cooperates with the output end to drive the first plate to translate or rotate relative to the second plate. It should be understood that by disposing the driving member 13, which serves as the power source, and the transmission member 14, which provides the power path, on the first plate and the second plate respectively, motion interference will not occur between the driving member 13 and the transmission member 14 during translation or rotation. This effectively avoids the vibration of the power source being directly transmitted to the other plate, thereby reducing the motion jitter of the transmission member and ensuring the stability of the movement of the moving part 12, thus ensuring the positioning accuracy of the moving part 12. At the same time, this design can improve the reliability and durability of the power device 1 and reduce the problem of inaccurate flow guidance caused by motion jitter. In some embodiments, the positioning accuracy can be improved by 30% using the motion method provided in the embodiments of this application.

[0098] The drive unit 13 serves as the power source for switching between different guide ports 121. Its output end can output linear motion or torque. The transmission unit 14 converts the power output from the output end into a driving force that drives the first plate and the second plate to move relative to each other, thereby realizing the switching between different guide ports 121.

[0099] Furthermore, the design incorporates a water spray nozzle 111 on the first plate and a flow guide 121 on the second plate, resulting in a simple manufacturing process and high yield. This design reduces production costs and improves production efficiency, making it particularly suitable for large-scale production. The high degree of commonality between the first and second plates reduces the number of molds required, which helps lower the cost of the power unit.

[0100] The driving component 13 and the transmission component 14 are connected to the first plate and the second plate respectively. The output shaft of the driving component 13 outputs torque. Through the cooperation between the driving component 13 and the transmission component 14, the torque output by the driving component 13 is converted into the translation or rotation of the second plate. The driving component 13 can be constructed as a driving mechanism such as a motor, and outputs torque through the output end. The transmission component 14 can be constructed as a gear 131 or a rack 141, and realizes the relative translation or rotation of the second plate through cooperation with the output end.

[0101] According to some embodiments of this application, the output end is constructed as a rotatable output shaft, and a gear 131 is provided on the output end. The transmission component 14 is constructed as a rack 141 that meshes with the gear 131. The rack 141 extends in the arrangement direction of the plurality of guide ports 121. The gear 131 and the rack 141 mesh to drive the second plate to translate relative to the first plate in the extension direction of the rack 141. The rack 141 can be constructed as an integral part with the second plate, reducing the number of parts and improving the integration of the power unit 1. It should be understood that this design not only simplifies the assembly process but also reduces assembly errors and failure risks caused by an excessive number of parts. The integrated design reduces assembly steps and the number of parts, improving the reliability of the system. At the same time, by reducing the connection points between parts, the risk of failure caused by loose or damaged connections can be reduced, ensuring the stability of the power unit 1 during long-term operation.

[0102] In some embodiments, gear 131 is mounted on the output shaft of drive member 13, and rack 141 is mounted on the second plate. Gear 131 meshes with rack 141, and the rotation of gear 131 drives rack 141 to perform linear motion, thereby achieving translation of the second plate. The meshing of gear 131 and rack 141 improves the stability and accuracy of the relative movement between the first and second plates. It should be understood that the meshing of gear 131 and rack 141 reduces energy loss during power transmission. This design can improve the efficiency of power unit 1, reduce power drop due to energy loss, and thus allow for the use of a smaller power unit to achieve relative movement between the first and second plates, reducing the cost of the power unit.

[0103] According to some embodiments of this application, the driving member 13 is disposed on the side of the first plate away from the second plate. The output end of the driving member 13 is constructed as an output shaft, which passes through the first plate. A gear 131 is disposed on the side of the first plate facing the first plate and connected to the output shaft. A rack 141 is formed on the edge of the second plate. By having the output shaft pass through the first plate, the projections of the driving member 13, the first plate, and the second plate in the thickness direction overlap, making the overall structure of the power unit 1 more compact.

[0104] In some embodiments of this application, the power unit 1 further includes a direct drive component, which is disposed on one of the first plate and the second plate. The direct drive component is equipped with a telescopic moving rod, and directly drives the first plate or the second plate through the telescopic moving rod to realize the relative movement between the first plate and the second plate. This design reduces the number of transmission components 14 and simplifies the power transmission path. The moving rod is connected to the first plate or the second plate to realize the relative movement between the first plate and the second plate. The direct drive component can be constructed as a linear motor, a telescopic cylinder, or other mechanism that can realize linear drive function. Using a direct drive component can reduce the number of transmission components 14, improve the integration of the power unit 1, and reduce the number of parts. Optionally, for working conditions requiring high-precision control, a linear motor can be used; for working conditions requiring large thrust, a telescopic cylinder can be used. The configuration of the direct drive component can be selected and optimized according to specific working conditions and requirements.

[0105] According to some embodiments of this application, the power device 1 further includes a first guide portion and a second guide portion 16. The first guide portion is fixed relative to the first plate, and the second guide portion 16 is disposed on the second plate. The first guide portion and the second guide portion 16 cooperate to limit the movement direction of the first plate relative to the second plate. The first guide portion and the second guide portion 16 are in a limiting cooperation, for example, a positioning pin is provided on one of the first plate and the second plate, and a positioning hole is provided on the other of the first plate and the second plate. The cooperation between the positioning pin and the positioning hole limits the relative movement of the first plate and the second plate.

[0106] The cooperation between the first guide part and the second guide part 16 ensures that the first plate and the second plate can move along a preset trajectory, thereby improving the stability of the movement of the first plate and the second plate and preventing misalignment of the first plate and the second plate during the movement.

[0107] In some embodiments, the second guide portion 16 is formed with a guide groove 151 for receiving the first guide portion. The extension direction of the guide groove 151 is the same as the arrangement direction of the plurality of guide ports 121. The guide groove 151 uses its two side walls in its own width direction to limit the first guide portion inside, so that the first guide portion can only move along the extension direction of the guide groove 151, thus ensuring the movement direction of the first plate relative to the first plate.

[0108] In some embodiments, the first guide portion forms guide grooves 151 on both sides of the second plate in the width direction, and the second guide portion 16 is provided on both sides of the second plate in the width direction. The guide grooves 151 on both sides further restrict the position of the second plate in the width direction, avoid misalignment between the first plate and the second plate in the width direction, and further improve the stability of the fit between the first plate and the second plate.

[0109] In some embodiments of this application, the second guide portion 16 includes a connecting shaft 161 and a rolling element 162. One end of the connecting shaft 161 is connected to the second plate, and the other end of the connecting shaft 161 extends into the guide groove 151. The rolling element 162 is rotatably sleeved on the other end of the connecting shaft 161 and embedded in the guide groove 151. By the rolling element 162 being embedded in the guide groove 151 and rolling and rubbing against the inner wall of the guide groove 151, the friction between the first guide element and the second guide element is reduced.

[0110] In some other embodiments of this application, a slide rail can be provided in the guide groove 151, and a slider that cooperates with the slide rail is provided in the second guide part 16. The slider is embedded in the slide rail and slides with each other. Ball bearings or the like can be provided between the slider and the slide rail to reduce friction.

[0111] In some embodiments, the guide groove 151 can be designed as a straight line or a curve, and its specific shape and size can be adjusted according to specific working conditions and requirements. The guide groove 151 can be provided with multiple guide segments arranged parallel to each other. Each guide segment can accommodate a second guide portion. The multiple guide segments are connected to each other and are staggered in the thickness direction of the first plate, achieving a mating state between the second guide portion and the corresponding guide segment to adjust the distance between the base portion 11 and the moving portion 12.

[0112] In some other embodiments of this application, the rolling element 162 can be configured as a sealed bearing, which can ensure the rolling stability of the rolling element 162 and prevent debris in the working environment from entering the guide groove 151, thereby improving the precision of the fit.

[0113] According to some embodiments of this application, the power unit 1 further includes: a face shell 17, on which a receiving cavity is formed and a spray outlet 171 communicating with the receiving cavity; a base portion 11 is fixed to the face shell 17; and a movable portion 12 is movable relative to the face shell 17 and drives the guide port 121 to face the spray outlet 171. This provides a neat appearance for the power unit while ensuring its effective operation. The face shell 17 cooperates with the base portion 11 and the movable portion 12. The face shell 17 can cover the outer periphery of the base portion 11 and the movable portion 12. The movable portion 12 moves within the receiving cavity and achieves the correspondence between the guide port 121 and the spray outlet 111. The spray outlet 171 on the face shell 17 is used to discharge the water flow after guidance. The spray outlet 171 does not have a guide member 122 and does not have a guiding function. Of course, in some embodiments, a guiding component can also be provided at the spray outlet 171.

[0114] The connection between the faceplate 17 and the pool cleaning robot 2 can be achieved through snap-fit, bolt, or adhesive bonding, and the specific method can be selected according to actual needs and working conditions.

[0115] In some embodiments, the faceplate 17 is connected by a snap-fit, which enables a quick and convenient connection between the faceplate 17 and the pool cleaning robot 2. The connection and disassembly are achieved through the elastic deformation of the snap-fit. The snap-fit ​​structure can be integrally formed with the faceplate 17, which is simple in structure and easy to process.

[0116] In some embodiments, the faceplate 17 is bolted together. This bolted connection makes the connection between the faceplate 17 and the pool cleaning robot 2 more reliable and stable, achieved through the engagement of bolts and nuts. Bolted connections provide high connection strength, suitable for applications requiring high stability, and prevent separation between the faceplate 17 and the pool cleaning robot 2. The bolted connection can use metal bolts or plastic bolts. Metal bolts have high structural strength and can have an anti-rust coating to prevent corrosion in underwater environments. Plastic bolts are lightweight, reducing the risk of rust and having lower manufacturing costs.

[0117] In some embodiments, the faceplate 17 is bonded to the pool cleaning robot 2. This bond provides good waterproof and dustproof performance and is suitable for applications requiring a sealed environment. Different types of adhesives can be used, such as epoxy resin or silicone, to meet various connection requirements.

[0118] According to some embodiments of this application, the edge of the faceplate 17 may be provided with a sealing strip for contacting the pool cleaning robot 2. The sealing strip is arranged around the edge to form a complete sealing edge, thereby improving the sealing performance between the faceplate 17 and the pool cleaning robot 2 and ensuring the waterproof and dustproof effect of the connection part.

[0119] In some embodiments, the edge of the faceplate 17 is formed with a recessed sealing strip receiving groove, and the sealing sleeve is embedded in the receiving groove, thereby maintaining relative stability with the faceplate and increasing the contact area to further enhance the sealing performance.

[0120] Furthermore, a sealing strip receiving groove can also be provided on the main body of the pool cleaning robot 2 to increase the contact area between the sealing sleeve and the pool cleaning robot 2.

[0121] The following describes a specific embodiment according to this application.

[0122] The power unit 1 includes a base portion 11 and a moving portion 12. A nozzle 111 is formed on the base portion 11, and a plurality of through-holes 121 are formed on the moving portion 12. Each through-hole 121 has a corresponding flow direction. The moving portion 12 is movable relative to the base portion 11 to adjust the position of the through-holes 121 to correspond to the nozzle 111, and controls the direction of medium ejection from the nozzle 111 according to the flow direction. A guide member 122 is formed within each through-hole 121, guiding the medium passing through the through-hole 121 to the corresponding ejection direction.

[0123] The orthographic projections of the flow guide 122 and the flow guide port 121 at least partially overlap, and the surface of the flow guide 122 is formed with a flow guide surface 124 for guiding flow. The flow guide rib 123 has a flow guide surface 124 formed on at least one side surface in the thickness direction. The angle between the flow guide surface 124 and the through direction of the flow guide port 121 is α, where 0° < α < 90°. The flow guide 122 is constructed as a flow guide rib 123, and both ends of the flow guide rib 123 in the extension direction are connected to the inner wall of the flow guide port 121.

[0124] The moving part 12 translates relative to the base part 11 in the travel direction or the width direction. A plurality of guide ports 121 are formed on the moving part 12 in the first direction. The moving part 12 translates relative to the base part 11 in the first direction so that the guide ports 121 are aligned with the spray nozzles 111.

[0125] The base part 11 is constructed as a first plate, and a water spray nozzle 111 is provided on the first plate. The moving part 12 is constructed as a second plate, which is arranged parallel to the first plate. A plurality of guide ports 121 are formed on the second plate. The second plate is translated relative to the first plate to align the guide ports 121 with the water spray nozzle 111.

[0126] The power unit 1 also includes a drive member 13, which has a power output end and is located on one of the first plate and the second plate. A transmission member 14 is located on the other of the first plate and the second plate. The transmission member 14 cooperates with the output end to drive the first plate to translate relative to the second plate.

[0127] A gear 131 is provided on the output end, and the transmission component 14 is constructed as a rack 141 that meshes with the gear 131. The rack 141 extends in the arrangement direction of the multiple guide ports 121. The driving component 13 is located on the side of the first plate away from the second plate, and the output end of the driving component 13 is constructed as an output shaft that passes through the first plate. The gear 131 is located on the side of the first plate facing the first plate and is connected to the output shaft. The rack 141 is formed on the edge of the second plate.

[0128] A first guide portion is provided on the first plate, and a second guide portion 16 is provided on the second plate. The first guide portion and the second guide portion 16 cooperate to restrict the movement direction of the first plate relative to the second plate, so that the first plate and the second plate can only move in the arrangement direction of the plurality of guide ports 121. The second guide portion 16 is formed with a guide groove 151 for receiving the first guide portion, and the extension direction of the guide groove 151 is the same as the arrangement direction of the plurality of guide ports 121. The first guide portion has guide grooves 151 formed on both sides of the second plate in the width direction, and the second guide portion 16 is provided on both sides of the second plate in the width direction.

[0129] The power unit 1 also includes a face shell 17, on which a receiving cavity is formed and an outlet 171 communicating with the receiving cavity is formed. The base part 11 is fixed to the face shell 17, and the moving part 12 can move relative to the face shell 17 and drive the guide port 121 to face the outlet 171.

[0130] The following describes another embodiment according to this application.

[0131] This application also proposes a swimming pool cleaning robot 2, which includes a robot body 21 and a power unit 1. The power unit 1 is disposed on the robot body 21 and is configured as described in any of the above embodiments. The robot body 21 may be equipped with cleaning tools for underwater cleaning, such as a roller brush, a suction mechanism, a collection device, etc. The power unit 1 is disposed on the robot body 21 and provides driving force to the robot body 21, enabling the robot body 21 to move.

[0132] In this application, the pool cleaning robot 2 is equipped with a power unit 1 as described in any of the above embodiments. The power unit 1 is small in size and compact in structure, and can selectively spray media in opposite directions, thereby enabling the pool cleaning robot 2 to have different travel directions. Furthermore, the power unit 1 has a compact structure and few parts, which helps to achieve the miniaturization design of the pool cleaning robot 2.

[0133] In some embodiments of this application, a faceplate 17 is disposed on a robot body 21, a first connecting portion is formed on the faceplate 17, and a second connecting portion is formed on the robot body 21. The first connecting portion and the second connecting portion are detachably connected to each other. The first connecting portion and the second connecting portion can be connected by snap-fit, bolt, or by adhesive bonding, or by using flexible sealing connections.

[0134] In some embodiments of this application, a faceplate 17 is disposed on a robot body 21, a first connecting portion is formed on the faceplate 17, and a second connecting portion is formed on the robot body 21. The first connecting portion and the second connecting portion are detachably connected to each other. The first connecting portion and the second connecting portion can be connected by snap-fit, bolt, or by adhesive bonding, or by using flexible sealing connections.

[0135] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0136] In the description of this invention, "first feature" and "second feature" may include one or more of the features.

[0137] In the description of this invention, "a plurality of" means two or more.

[0138] In the description of this invention, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or it may include the first and second features not being in direct contact but being in contact through another feature between them.

[0139] In the description of this invention, the terms "above," "over," and "on top" for the first feature and the second feature include the first feature being directly above or diagonally above the second feature, or simply indicating that the first feature is at a higher horizontal level than the second feature.

[0140] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0141] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A power unit for a pool cleaning robot, characterized by, include: A base portion, on which water nozzles are formed; The movable part has a plurality of through-flow guides formed thereon, each of the guides having a corresponding flow direction. The movable part can move relative to the base part to adjust the position of the guides to correspond to the position of the spray nozzle, and control the medium spraying direction of the spray nozzle according to the flow direction. At least two of the plurality of guides have different flow directions.

2. The power unit for a swimming pool cleaning robot of claim 1, wherein, The moving part translates or rotates relative to the base part.

3. The power unit for a swimming pool cleaning robot of claim 2, wherein, The movable part has a plurality of flow guides arranged sequentially in a first direction. The movable part is translated relative to the base part in the first direction to align the flow guides with the water spray nozzles.

4. The power unit for a swimming pool cleaning robot of claim 2, wherein, The base portion is constructed as a first plate, and the water spray nozzle is provided on the first plate; The moving part is constructed as a second plate, which is arranged parallel to the first plate. A plurality of flow guides are formed on the second plate. The second plate is translated relative to the first plate to align the flow guides with the water spray nozzles.

5. The power unit for a swimming pool cleaning robot of claim 4, wherein, Also includes: A driving component is disposed on one of the first plate and the second plate, and the driving component is provided with a power output end; A transmission component is disposed on the other of the first plate and the second plate, and the transmission component cooperates with the output end to drive the first plate to translate or rotate relative to the second plate.

6. The power unit for a swimming pool cleaning robot of claim 5, wherein, A gear is provided on the output end, and the transmission component is constructed as a rack that cooperates with the gear, the rack extending in the arrangement direction of the plurality of guide ports.

7. The power unit for a swimming pool cleaning robot of claim 6, wherein, The driving component is disposed on the side of the first plate away from the second plate. The output end of the driving component is configured as an output shaft, which passes through the first plate. The gear is disposed on the side of the first plate facing the second plate and is connected to the output shaft. The rack is formed on the edge of the second plate.

8. The power unit for a pool cleaning robot according to claim 4, characterized in that, Also includes: A first guide portion, which is fixed relative to the first plate; The second guide portion is disposed on the second plate, and the first guide portion cooperates with the second guide portion to restrict the movement direction of the first plate relative to the second plate.

9. The power unit for a pool cleaning robot according to claim 1, characterized in that, Also includes: The surface shell has a receiving cavity and a spray outlet communicating with the receiving cavity. The base part is fixed to the surface shell, and the moving part can move relative to the surface shell and drive the guide port to face the spray outlet.

10. A swimming pool cleaning robot, characterized in that, include: Robot body; A power unit, wherein the power unit is disposed on the robot body and is configured as the power unit described in any one of claims 1-9.

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