A pool cleaning device using an underwater robot

By employing a detachable top and bottom cover structure, precise matching of guide wheels, and a dual-motor drive design, the maintenance difficulties and unstable movement issues of existing pool cleaning equipment have been resolved, achieving efficient cleaning and convenient maintenance.

CN224432129UActive Publication Date: 2026-06-30TAIZHOU SURFACE TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
TAIZHOU SURFACE TECH CO LTD
Filing Date
2025-06-25
Publication Date
2026-06-30

AI Technical Summary

Technical Problem

The integrated design of existing pool cleaning equipment makes maintenance difficult, guide wheels are prone to misalignment, and filters are not easy to clean, resulting in unsatisfactory cleaning results.

Method used

The equipment features a detachable top and bottom cover structure, guide wheels that precisely match the caster shafts via wheel grooves, a dual-motor driven drainage enclosure design, a sensor bracket and through-hole linkage installation method, and a user-friendly operating port and soft rubber scraper, ensuring the stability and ease of maintenance of the equipment.

Benefits of technology

It improves the equipment's stability and obstacle-crossing ability on the bottom of the pool, simplifies the maintenance process, extends the equipment's service life, and enhances cleaning efficiency and reliability.

✦ Generated by Eureka AI based on patent content.

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Abstract

This utility model belongs to the field of intelligent cleaning equipment technology, and in particular to an underwater robot swimming pool cleaning device. The detachable upper and lower cover structure facilitates maintenance of the filter and impeller, and is linked with the sensor bracket and through-hole installation method. During assembly and disassembly, the sensor bracket automatically separates, simplifying assembly and ensuring connection stability. The guide wheel system, through the precise fit between the wheel groove and the caster shaft, significantly improves the device's stability and obstacle-crossing ability on the pool bottom. The dual-motor drive, combined with the concentrically designed drainage barrier, creates a highly efficient vortex, ensuring cleaning capability even in the event of a single motor failure, while greatly improving the efficiency of removing fine impurities. In terms of user-friendly design, details such as the aligned maintenance solution between the operating port and the fixed base, the swingable and detachable soft rubber scraper, and the waterproof switch work together. The overall structure, through the organic cooperation between its components, achieves a comprehensive improvement in cleaning efficiency, operational reliability, and maintenance convenience.
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Description

Technical Field

[0001] This utility model relates to the field of intelligent cleaning equipment technology, specifically to an underwater robot swimming pool cleaning device. Background Technology

[0002] Pool cleaning robots are also called pool vacuum cleaners, pool bottom vacuums, water turtles, fully automatic pool vacuums, etc. There are several types of pool vacuum cleaners, including manual, automatic, and remote-controlled models. Manual vacuum cleaners require manual operation, while automatic and remote-controlled vacuum cleaners can be controlled automatically or remotely, making them more convenient and efficient. Fully automatic underwater vacuum cleaners also have wall-climbing capabilities. When used in conjunction with a waterline cleaning program, the machine can clean along the edge of the pool, eliminating cleaning dead spots such as areas that cannot be cleaned or have limited cleaning coverage, ensuring a clean pool.

[0003] In the existing technology, the water inlet components of swimming pool cleaning equipment are difficult to clean when the filter screen is clogged due to the fixed structure. The guide wheel system is prone to deviation due to insufficient assembly precision. The integrated design of the upper and lower covers requires the whole body to be disassembled during maintenance, which affects the maintenance efficiency. The performance is not ideal.

[0004] Therefore, we propose an underwater robot-based pool cleaning device to solve the above problems. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this utility model provides an underwater robot pool cleaning device, which solves the problems mentioned in the background art, such as the integrated upper and lower cover design being difficult to maintain, the guide wheels being prone to misalignment, and the filter screen being difficult to clean.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model specifically adopts the following technical solution:

[0009] A pool cleaning device for an underwater robot includes a main body of the cleaning device, wherein a water inlet component and a water outlet component are respectively provided at the bottom and top of the main body of the cleaning device, a filter screen is provided inside the main body of the cleaning device between the water inlet component and the water outlet component, and a number of guide wheels are also provided at the bottom of the main body of the cleaning device.

[0010] The water inlet assembly includes a water inlet located at the bottom of the main body of the cleaning equipment and a soft rubber scraper located on one side of the water inlet.

[0011] Furthermore, the main body of the cleaning device includes an upper cover and a lower cover. The water inlet component is located at the bottom of the lower cover, and the drainage component is located at the top of the upper cover. Several hand catches are hinged around the lower cover, and the upper cover has slots that correspond to the number of hand catches and engage one-to-one. The upper cover and the lower cover are detachably connected through the cooperation of the hand catches and the slots.

[0012] Furthermore, the water inlet assembly also includes an inlet fixing component and a three-hole plug. The inlet fixing component is located inside the lower cover and on both sides of the inlet. The three-hole plug is hinged to the bottom of the lower cover and located on one side of the inlet. The soft rubber scraper is detachably installed on the three-hole plug.

[0013] Furthermore, decorative covers are snapped onto both sides of the upper cover, and metal handles are fixedly installed on the other two sides. Several wheel grooves for installing guide wheels are provided around the lower cover, and caster shafts are provided at the top inner part of the wheel grooves.

[0014] Furthermore, the guide wheel includes a guide wheel bracket and a guide wheel body rotatably disposed inside the guide wheel bracket via a pin. The top end of the guide wheel bracket is provided with a connecting shaft, and the top end of the connecting shaft extends through the caster shaft to the interior of the lower cover and is provided with a retaining spring.

[0015] Furthermore, there are four guide wheels and four wheel grooves. The upper cover has at least two sensor brackets inside. The two guide wheel brackets have through holes corresponding to the two sensor brackets. The bottom end of the sensor bracket passes through the through hole and extends into the interior of the guide wheel bracket. The sensor bracket has a sensor circuit board inside.

[0016] Furthermore, an operation port is provided at the bottom center of the lower cover, and a fixed seat opposite to the operation port is provided inside the lower cover. A drive assembly is provided inside the upper cover. The drive assembly includes a base and an upper shell disposed on top of the base. At least two motors are provided inside the base.

[0017] Furthermore, an indicator light bracket is provided on the top of the upper shell, and an indicator light circuit board is provided inside the indicator light bracket. The top of the LED on the indicator light circuit board extends through to the top of the upper cover. A battery is also provided inside the base. The bottom of the base passes through the fixing seat and extends into the inside of the operation port. A charging port sealing plug and a waterproof switch button are provided at the bottom of the base.

[0018] Furthermore, the drainage assembly includes a flow channel baffle on the top of the upper cover and a drainage cover disposed on the top of the flow channel baffle. Two impellers are rotatably disposed inside the flow channel baffle, and the interiors of the two impellers are respectively fixedly sleeved with the output shafts of two motors.

[0019] Furthermore, the drain cover has two drainage barriers inside, the tops of the two impellers extend into the interior of the drain cover and are concentrically arranged with the center of the two drainage barriers respectively, and the drain cover has drain outlets on both sides that are connected to the two drainage barriers respectively, and the drain outlets have movably installed water outlet flaps inside.

[0020] (III) Beneficial Effects

[0021] Compared with the prior art, this utility model provides an underwater robot pool cleaning device, which has the following beneficial effects:

[0022] This utility model, through its detachable upper and lower cover structure, not only facilitates the maintenance of the filter screen and impeller, but also forms a linkage with the sensor bracket and through-hole installation method. The sensor bracket automatically separates during assembly and disassembly, simplifying assembly while ensuring connection stability. The guide wheel system, through the precise fit between the wheel groove and the caster shaft, significantly improves the equipment's stability and obstacle-crossing ability on the pool bottom. The dual-motor drive, combined with the concentrically designed drainage barrier, creates a highly efficient vortex, ensuring continued cleaning capability even in the event of a single motor failure, while greatly improving the efficiency of removing fine impurities. In terms of user-friendly design, details such as the aligned maintenance solution between the operating port and the fixed base, the swingable and detachable soft rubber scraper, and the waterproof switch work together to ensure IPX8 waterproof performance, making equipment maintenance more convenient and extending its service life. The overall structure, through the organic cooperation between its components, achieves a comprehensive improvement in cleaning efficiency, operational reliability, and maintenance convenience. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the main structure of the cleaning equipment of this utility model;

[0024] Figure 2 This is a schematic diagram of the bottom structure of the main body of the cleaning equipment of this utility model;

[0025] Figure 3 This is a schematic diagram of the lower cover structure of this utility model;

[0026] Figure 4 This is an exploded view of the water inlet component structure of this utility model;

[0027] Figure 5 This is a schematic diagram of the decorative cover structure of this utility model;

[0028] Figure 6 This is a schematic diagram of the fixing base structure of this utility model;

[0029] Figure 7 This is a cross-sectional view of the main structure of the cleaning equipment of this utility model;

[0030] Figure 8 This is a cross-sectional view of the drainage enclosure structure of this utility model.

[0031] In the diagram: 1. Cleaning equipment body; 101. Top cover; 102. Bottom cover; 103. Handle; 104. Slot; 105. Decorative cover; 106. Metal handle; 107. Sensor bracket; 108. Operating port; 109. Sensor circuit board; 11. Filter screen; 12. Guide wheel; 121. Guide wheel bracket; 122. Pin; 123. Guide wheel body; 124. Connecting shaft; 125. Snap ring; 126. Through hole; 127. Limiting plate; 13. Wheel groove; 14. Caster wheel shaft; 15. Fixing base 16. Drive assembly; 161. Base; 162. Upper shell; 163. Motor; 164. Indicator light bracket; 165. Indicator light circuit board; 166. LED beads; 167. Battery; 168. Charging port sealing plug; 169. Waterproof switch button; 2. Water inlet assembly; 21. Water inlet; 22. Soft rubber scraper; 23. Water inlet fixing piece; 24. Three-hole plug; 3. Drainage assembly; 31. Flow channel baffle; 32. Drainage cover; 33. Impeller; 34. Drainage enclosure; 35. Drainage outlet; 36. Water outlet flip cover. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] Example

[0034] like Figure 1-8 As shown, an embodiment of the present invention provides a pool cleaning device for an underwater robot, including a cleaning device body 1. The bottom and top of the cleaning device body 1 are respectively provided with a water inlet component 2 and a drainage component 3. The interior of the cleaning device body 1 is provided with a filter screen 11 located between the water inlet component 2 and the drainage component 3. The bottom of the cleaning device body 1 is also provided with a plurality of guide wheels 12.

[0035] The water inlet assembly 2 includes a water inlet 21 located at the bottom of the main body 1 of the cleaning equipment and a soft rubber scraper 22 located on one side of the water inlet 21.

[0036] like Figure 6As shown, in some embodiments, the main body 1 of the cleaning device includes an upper cover 101 and a lower cover 102. The water inlet component 2 is disposed at the bottom of the lower cover 102, and the drainage component 3 is disposed at the top of the upper cover 101. A plurality of hand buckles 103 are hinged around the lower cover 102. A groove 104 is provided around the upper cover 101, which is the same number as the hand buckles 103 and corresponds to them one by one. The upper cover 101 and the lower cover 102 are detachably connected by the cooperation of the hand buckles 103 and the groove 104.

[0037] The upper cover 101 and the lower cover 102 are connected by a buckle 103 and a slot 104. While ensuring a stable connection, this facilitates disassembly and maintenance, allowing for cleaning of the filter screen 11 and disassembly of the impeller 33. This significantly improves the convenience of maintaining the filter screen 11 and reduces the overall maintenance difficulty of the equipment.

[0038] like Figure 6 As shown, in some embodiments, the water inlet assembly 2 further includes an inlet fixing member 23 and a three-hole plug 24. The inlet fixing member 23 is disposed inside the lower cover 102 and located on both sides of the inlet 21. The three-hole plug 24 is hinged to the bottom of the lower cover 102 and located on one side of the inlet 21. The soft rubber scraper 22 is detachably installed on the three-hole plug 24.

[0039] The hinged connection between the three-hole plug 24 and the lower cover 102 allows the three-hole plug 24 to drive the soft rubber scraper 22 to swing slightly. The soft rubber scraper is locked onto the three-hole plug 24 through the holes on the three-hole plug 24. The detachable soft rubber scraper 22 design extends the service life of the components and reduces the cost of replacing consumables.

[0040] like Figure 5 As shown, in some embodiments, decorative covers 105 are snapped onto both sides of the upper cover 101, and metal handles 106 are fixedly provided on the other two sides. A plurality of wheel grooves 13 for installing guide wheels 12 are provided around the lower cover 102, and caster shafts 14 are provided on the inner top of the wheel grooves 13.

[0041] The mating structure between the wheel groove 13 and the caster shaft 14 enhances the stability of travel and prevents tipping. The metal handle 106 is ergonomically designed to ensure even force distribution during handling. The decorative cover 105 and the top cover 101 can be color-blocked, and the decorative cover 105 can improve the product's aesthetic appearance.

[0042] like Figure 4As shown, in some embodiments, the guide wheel 12 includes a guide wheel bracket 121 and a guide wheel body 123 rotatably disposed inside the guide wheel bracket 121 via a pin 122. The top end of the guide wheel bracket 121 is provided with a connecting shaft 124. The top end of the connecting shaft 124 extends through the caster shaft 14 to the interior of the lower cover 102 and is provided with a retaining spring 125. The top of the guide wheel bracket 121 is also provided with a limiting plate 127 whose top end extends through the interior of the lower cover 102.

[0043] The top of the connecting shaft 124 passes through the caster shaft 14. The pin 122 rotating structure reduces friction loss. The snap ring 125 fixing method prevents it from falling off during underwater operations. The through design of the connecting shaft 124 enhances the axial load-bearing capacity and adapts to the uneven bottom of the pool. The design of the limiting plate 127 ensures the assembly stability of the guide wheel bracket 121 and prevents it from shifting.

[0044] like Figure 4 As shown, in some embodiments, there are four guide wheels 12 and four wheel grooves 13. The upper cover 101 is provided with at least two sensor brackets 107 inside. The two guide wheel brackets 121 are provided with through holes 126 corresponding to the two sensor brackets 107 respectively. The bottom end of the sensor bracket 107 passes through the through hole 126 and extends into the interior of the guide wheel bracket 121. The sensor circuit board 109 is provided inside the sensor bracket 107.

[0045] The bottom end of the sensor bracket 107 passes through the through hole 126 and extends into the interior of the guide wheel bracket 121. The through hole 126, in conjunction with the sensor bracket 107, enables precise positioning. The four-wheel configuration enhances obstacle-crossing capability. When the upper cover 101 and the lower cover 102 separate, the upper cover 101 causes the sensor bracket 107 to fall into the interior of the through hole 126. The design of the sensor bracket 107 fitting inside the through hole 126 not only simplifies the assembly process and ensures the assembly stability of the sensor circuit board 109, but also further ensures the connection stability between the upper cover 101 and the lower cover 102.

[0046] like Figure 6 As shown, in some embodiments, an operation port 108 is provided at the bottom center of the lower cover 102, and a fixed seat 15 opposite to the operation port 108 is provided inside the lower cover 102. A drive assembly 16 is provided inside the upper cover 101. The drive assembly 16 includes a base 161 and an upper shell 162 disposed on the top of the base 161. At least two motors 163 are provided inside the base 161.

[0047] Two motors 163 drive two impellers 33 respectively. This design allows the cleaning capacity to be maintained at 50% even if a single motor 163 fails. The alignment of the mounting base 15 with the operating port 108 facilitates maintenance without completely disassembling the equipment. When separating the upper cover 101 and the lower cover 102, the upper cover 101 pulls the motor 163 assembly out from inside the operating port 108 and the mounting base 15. The design of the operating port 108 makes it convenient for users to control the motor 163 assembly.

[0048] like Figure 1-3 As shown, in some embodiments, an indicator light bracket 164 is provided on the top of the upper shell 162, and an indicator light circuit board 165 is provided inside the indicator light bracket 164. The top of the LED bead 166 on the indicator light circuit board 165 extends through to the top of the upper cover 101. A battery 167 is also provided inside the base 161. The bottom of the base 161 passes through the fixing seat 15 and extends into the interior of the operation port 108. A charging port sealing plug 168 and a waterproof switch button 169 are provided at the bottom of the base 161.

[0049] The charging port sealing plug 168 and the waterproof switch button 169 meet the IPX8 standard, ensuring the safety of underwater circuitry. By removing the charging port sealing plug 168, the battery 167 can be charged through the charging port. The indicator light circuit board 165 displays the charging and fault status in real time. Pressing the waterproof switch button 169 will start the motor 163, which will drive the impeller 33 to rotate and drain water. The battery 167 is electrically connected to the motor 163, the indicator light circuit board 165, and the sensor circuit board 109. The charging port sealing plug 168 and the waterproof switch button 169 are located at the bottom of the base 161 for easy user operation.

[0050] like Figure 7-8 As shown, in some embodiments, the drainage assembly 3 includes a flow channel baffle 31 on the top of the upper cover 101 and a drainage cover 32 disposed on the top of the flow channel baffle 31. Two impellers 33 are rotatably disposed inside the flow channel baffle 31. The interior of the two impellers 33 is fixedly sleeved with the output shafts of two motors 163 respectively. The interior of the drainage cover 32 is provided with two drainage barriers 34. The tops of the two impellers 33 extend into the interior of the drainage cover 32 and are concentrically disposed with the center of the two drainage barriers 34 respectively. Drainage outlets 35 are provided on both sides of the drainage cover 32, which are respectively connected to the two drainage barriers 34, and water outlet flaps 36 are movably disposed inside the drainage outlets 35.

[0051] The drainage baffle 34, designed concentrically with the impeller 33, forms a vortex, improving the efficiency of removing fine impurities. The movable water outlet flap 36 automatically adjusts its opening and closing degree according to the water pressure to prevent backflow and pollution. The dual drain outlet 35 design accelerates the water circulation speed and shortens the single cleaning cycle.

[0052] In summary, the detachable upper cover 101 and lower cover 102 structure not only facilitates the maintenance of the filter screen 11 and impeller 33, but also forms a linkage with the sensor bracket 107 and through hole 126 installation method. During disassembly and assembly, the sensor bracket 107 is automatically separated, which simplifies assembly and ensures connection stability. The guide wheel 12 system, through the precise cooperation between the wheel groove 13 and the caster shaft 14, significantly improves the stability of the equipment on the bottom of the pool and its obstacle-crossing ability. The dual motor 163 drive, together with the concentrically designed drainage enclosure 34, forms a highly efficient vortex. While ensuring that the cleaning ability is maintained even when a single motor 163 fails, it greatly improves the efficiency of removing fine impurities. In terms of humanized design, the alignment and maintenance scheme of the operation port 108 and the fixed seat 15, the swingable and detachable soft rubber scraper 22, and the waterproof switch, etc., work together to make the equipment maintenance more convenient and extend its service life while ensuring IPX8 waterproof performance. The overall structure, through the organic cooperation between the various components, achieves a comprehensive improvement in cleaning efficiency, operational reliability, and maintenance convenience.

[0053] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A robotic pool cleaning apparatus for underwater robots, comprising a cleaning apparatus body (1), characterized in that: The bottom and top of the cleaning equipment body (1) are respectively provided with a water inlet assembly (2) and a drain assembly (3). The interior of the cleaning equipment body (1) is provided with a filter screen (11) located between the water inlet assembly (2) and the drain assembly (3). The bottom of the cleaning equipment body (1) is also provided with several guide wheels (12). The water inlet assembly (2) includes a water inlet (21) located at the bottom of the main body (1) of the cleaning equipment and a soft rubber scraper (22) located on one side of the water inlet (21).

2. A robotic pool cleaning apparatus according to claim 1, wherein: The main body (1) of the cleaning equipment includes an upper cover (101) and a lower cover (102). The water inlet component (2) is located at the bottom of the lower cover (102), and the drainage component (3) is located at the top of the upper cover (101). A number of hand buckles (103) are hinged around the lower cover (102). A number of slots (104) are provided around the upper cover (101) in the same number as the hand buckles (103) and are correspondingly engaged. The upper cover (101) and the lower cover (102) are detachably connected by the cooperation of the hand buckles (103) and the slots (104).

3. The underwater robot pool cleaning device according to claim 1, characterized in that: The water inlet assembly (2) also includes an inlet fixing member (23) and a three-hole plug (24). The inlet fixing member (23) is located inside the lower cover (102) and on both sides of the inlet (21). The three-hole plug (24) is hinged to the bottom of the lower cover (102) and located on one side of the inlet (21). The soft rubber scraper (22) is detachably installed on the three-hole plug (24).

4. The underwater robot pool cleaning device according to claim 2, characterized in that: The upper cover (101) is fitted with decorative covers (105) on both sides, and metal handles (106) are fixed on the other two sides. The lower cover (102) has a number of wheel grooves (13) for installing guide wheels (12) around its circumference. The inner top of the wheel grooves (13) is provided with caster shafts (14).

5. The underwater robot pool cleaning equipment according to claim 2, characterized in that: The guide wheel (12) includes a guide wheel bracket (121) and a guide wheel body (123) rotatably disposed inside the guide wheel bracket (121) via a pin (122). A connecting shaft (124) is provided at the top of the guide wheel bracket (121). The top of the connecting shaft (124) extends through the caster shaft (14) to the interior of the lower cover (102) and is provided with a retaining ring (125).

6. The underwater robot pool cleaning device according to claim 5, characterized in that: The number of guide wheels (12) and wheel grooves (13) are four each. The upper cover (101) is provided with at least two sensor brackets (107). The two guide wheel brackets (121) are provided with through holes (126) corresponding to the two sensor brackets (107). The bottom end of the sensor bracket (107) passes through the through hole (126) and extends into the interior of the guide wheel bracket (121). The sensor bracket (107) is provided with a sensor circuit board (109).

7. The underwater robot pool cleaning device according to claim 2, characterized in that: An operation port (108) is provided at the bottom center of the lower cover (102). A fixed seat (15) opposite to the operation port (108) is provided inside the lower cover (102). A drive assembly (16) is provided inside the upper cover (101). The drive assembly (16) includes a base (161) and an upper shell (162) disposed on the top of the base (161). At least two motors (163) are provided inside the base (161).

8. The underwater robot pool cleaning device according to claim 7, characterized in that: The top of the upper shell (162) is provided with an indicator light bracket (164), and the inside of the indicator light bracket (164) is provided with an indicator light circuit board (165). The top of the LED bead (166) on the indicator light circuit board (165) extends through to the top of the upper cover (101). The inside of the base (161) is also provided with a battery (167). The bottom of the base (161) passes through the fixing seat (15) and extends into the inside of the operation port (108). The bottom of the base (161) is provided with a charging port sealing plug (168) and a waterproof switch button (169).

9. The underwater robot pool cleaning device according to claim 1, characterized in that: The drainage assembly (3) includes a flow channel baffle (31) on the top of the upper cover (101) and a drainage cover (32) disposed on the top of the flow channel baffle (31). Two impellers (33) are rotatably disposed inside the flow channel baffle (31), and the interiors of the two impellers (33) are respectively fixedly connected to the output shafts of two motors (163).

10. A pool cleaning device for an underwater robot according to claim 9, characterized in that: The drain cover (32) is provided with two drain enclosures (34) inside. The tops of the two impellers (33) extend into the interior of the drain cover (32) and are concentrically arranged with the center of the two drain enclosures (34). The drain cover (32) is provided with drain outlets (35) on both sides, which are respectively connected to the two drain enclosures (34), and the drain outlets (35) are movably provided with water outlet flaps (36).