Swimming pool cleaning robot with detachable impeller

Abstract

The utility model discloses a swimming pool cleaning robot with a detachable impeller, and relates to the technical field of swimming pool cleaning robots, the swimming pool cleaning robot comprises a shell and a water pump mechanism, the shell is provided with a water injection nozzle, the water pump mechanism comprises a driving mechanism and the impeller, and the driving mechanism is arranged in the shell; a fixed cover cap is arranged outside the water spraying opening in a covering mode, a plurality of water passing holes are formed in the fixed cover cap, and the fixed cover cap is detachably connected to the shell; the diameter of the water spraying opening is larger than that of the impeller, and the impeller is arranged in the water spraying opening. A main shaft is arranged in the center of the impeller along the axis, the main shaft is detachably connected to an output shaft of the driving mechanism, and the driving mechanism drives the impeller to rotate. The impeller can be conveniently detached from the swimming pool cleaning robot, and sundries wound on the impeller can be conveniently cleaned.

Description

Technical Field

[0001] This utility model relates to the technical field of pool cleaning robots, and in particular to a pool cleaning robot with a detachable impeller. Background Technology

[0002] Pool cleaning robots are commonly used to clean swimming pools, replacing traditional manual methods and reducing labor intensity. A typical pool cleaning robot includes a housing, a filter box, a walking mechanism, and a water pump. The walking mechanism, located within the housing, propels the robot within the pool. An intake port at the bottom of the housing connects to the filter box, and a spray nozzle is located at the top. The water pump is housed within the housing and connected to the spray nozzle. During cleaning, the intake port draws in water and debris from the pool; the debris is blocked by the filter box, and the water pump forces water out through the spray nozzle.

[0003] In existing technology, a stepped groove is provided on the upper part of the casing inside the water nozzle, and the impeller of the water pump structure is confined within the stepped groove. In actual operation, foreign objects such as hair may become entangled on the impeller, preventing it from working properly. It is necessary to disassemble the upper and lower parts of the casing to clean the impeller, which is a cumbersome and laborious operation, and there are inconveniences in cleaning the impeller. Utility Model Content

[0004] The purpose of this invention is to provide a pool cleaning robot with a detachable impeller, which allows for easy removal of the impeller from the robot, facilitating the cleaning of debris entangled on the impeller.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0006] This utility model provides a pool cleaning robot with a detachable impeller. The pool cleaning robot includes a housing and a water pump mechanism. The housing has a water spray nozzle. The water pump mechanism includes a drive mechanism and an impeller. The drive mechanism is disposed inside the housing.

[0007] The water nozzle outer cover is provided with a fixed cap, the fixed cap is provided with multiple water passage holes, and the fixed cap is detachably connected to the housing; the diameter of the water nozzle is larger than the diameter of the impeller, and the impeller is disposed inside the water nozzle; a main shaft is provided at the center of the impeller along the axis, and the main shaft is detachably connected to the output shaft of the drive mechanism, and the drive mechanism drives the impeller to rotate.

[0008] Furthermore, the main shaft has a mounting hole at one end facing the drive mechanism, the output shaft of the drive mechanism is inserted into the mounting hole, the output shaft has a drive cross-section parallel to the axis of the output shaft on its periphery, and the inner wall of the mounting hole is in contact with the drive cross-section.

[0009] Furthermore, the end of the spindle facing the drive mechanism abuts against the drive mechanism, and the end of the spindle away from the drive mechanism abuts against the fixed cap.

[0010] Furthermore, a bearing is provided on the side of the fixed cap facing the impeller, the outer ring of the bearing is connected to the fixed cap, and the inner ring of the bearing is engaged with the end of the main shaft away from the drive mechanism.

[0011] Furthermore, an annular stepped groove is formed at one end of the main shaft near the bearing, and the inner ring of the bearing fits into the stepped groove.

[0012] Furthermore, the housing has a connecting cylinder protruding outward, the connecting cylinder is coaxial with the water nozzle and surrounds the water nozzle, and the fixing cap is detachably placed on the end of the connecting cylinder away from the water nozzle.

[0013] Furthermore, the outer circumference of the connecting cylinder is provided with an external thread, and the inner circumference of the fixing cap is provided with an internal thread, and the fixing cap is threadedly engaged with the connecting cylinder.

[0014] Furthermore, friction stripes are provided on the periphery of the fixing cap.

[0015] Furthermore, the plurality of water passage holes are arranged in a honeycomb pattern on the fixed cap.

[0016] Furthermore, the drive mechanism includes a motor and a motor housing, the motor housing being sealed around the motor, and the motor shaft extending out of the motor housing and connected to the main shaft.

[0017] In summary, this utility model has the following beneficial effects:

[0018] 1. This utility model relates to a pool cleaning robot with a detachable impeller. The impeller is driven to rotate via a drive mechanism, thereby spraying or drawing in water at the nozzle. A fixing cap is provided on the outside of the nozzle to confine the impeller within the nozzle, preventing it from detaching from the housing. A water passage hole is provided on the fixing cap to ensure the nozzle can spray or draw in water normally, while also blocking large debris. The impeller is located inside the nozzle, and the output shaft of the drive mechanism drives the main shaft and impeller to rotate, thus pumping water. When the impeller is entangled in hair or other debris, the user can remove the fixing cap from the outside of the nozzle and detach the impeller from the output shaft of the drive mechanism inside the nozzle for cleaning. This allows for easy removal and cleaning of the impeller without disassembling the pool cleaning robot's housing.

[0019] 2. The main shaft and the output shaft of the drive mechanism are connected by a plug-in method, which facilitates the installation of the impeller; after the output shaft is inserted into the mounting hole of the main shaft, the drive cut surface fits against the inner wall of the mounting hole so that the drive mechanism can transmit torque to the main shaft and the impeller.

[0020] 3. The two ends of the main shaft abut against the drive mechanism and the fixed cap respectively, thereby axially limiting the impeller within the spray nozzle. Therefore, there is no need to set up an additional axial limiting mechanism. When installing the impeller, simply insert the output shaft of the drive mechanism into the mounting hole of the main shaft and then install the fixed cap at the spray nozzle. Its structure is simple, and the impeller is easier to disassemble and assemble. At the same time, the main shaft extending towards the fixed cap is also easy for the user to hold when disassembling the impeller, making it convenient for the user to operate.

[0021] 4. A bearing is installed on the side of the fixed cap facing the impeller. The bearing engages the main shaft, reducing wear between the main shaft and the fixed cap. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural diagram of a pool cleaning robot with a detachable impeller, according to one embodiment of the present invention.

[0023] Figure 2 This is an exploded structural diagram of a swimming pool cleaning robot according to an embodiment of the present invention.

[0024] Figure 3 This is a cross-sectional structural diagram of a swimming pool cleaning robot according to an embodiment of the present invention.

[0025] Figure 4 yes Figure 3 Enlarged structural diagram at point A in the middle.

[0026] In the diagram: 1000, pool cleaning robot; 100, shell; 110, spray nozzle; 120, connecting cylinder; 200, walking mechanism; 300, water pump mechanism; 310, drive mechanism; 320, impeller; 330, output shaft; 331, drive section; 340, main shaft; 341, stepped groove; 400, fixing cap; 410, water passage hole; 420, friction stripe. Detailed Implementation

[0027] The present invention will be further described below with reference to the accompanying drawings.

[0028] This embodiment discloses a pool cleaning robot 1000 with a detachable impeller, referring to... Figures 1 to 3The pool cleaning robot 1000 includes a housing 100, a walking mechanism 200, a filter box, and a water pump mechanism 300. A spray nozzle 110 is located at the top of the housing 100, and an intake port is located at the bottom of the housing 100. The walking mechanism 200 is located at the bottom of the housing 100 and specifically includes electrically driven rollers. The walking mechanism 200 enables the pool cleaning robot 1000 to walk on the bottom or sidewalls of the pool for cleaning. The filter box is located inside the housing 100 and communicates with the intake port and the spray nozzle 110. The water pump mechanism 300 is located inside the housing 100; the water pump mechanism 300 draws water into the filter box through the intake port, filters impurities and dirt from the filter box, and then sprays the water out through the spray nozzle 110.

[0029] In this embodiment, the water nozzle 110 is a circular opening, and the water pump mechanism 300 is positioned directly opposite the water nozzle 110 to stably pump water into or out of the water nozzle 110.

[0030] Reference Figure 3 and Figure 4 The water pump mechanism 300 includes a drive mechanism 310 and an impeller 320. The drive mechanism 310 is fixedly installed inside the housing 100. The drive mechanism 310 has an output shaft 330 for output rotation. The impeller 320 is connected to the output shaft 330 and is driven to rotate by the output shaft 330.

[0031] In this embodiment, the drive mechanism 310 includes a motor and a motor housing. The motor housing is fixed inside the housing 100 and is sealed around the motor to prevent water from entering the motor and affecting its normal operation. The motor shaft extends out of the motor housing and connects to the impeller 320. That is, in this embodiment, the motor shaft is the output shaft 330 of the drive mechanism 310. When the motor starts, it drives the impeller 320 to rotate to pump water.

[0032] A main shaft 340 is provided at the center of the impeller 320 along the axis. The main shaft 340 is detachably connected to the output shaft 330 of the drive mechanism 310, so that the drive mechanism 310 drives the impeller 320 to rotate.

[0033] In this embodiment, the diameter of the nozzle 110 is larger than the diameter of the impeller 320. The impeller 320 is disposed inside the nozzle 110 and is coaxially arranged with the nozzle 110. The main shaft 340 extends along the axial direction of the nozzle 110 toward both sides of the impeller 320 to support the impeller 320 as it moves away from the drive mechanism 310.

[0034] Reference Figures 1 to 3The housing 100 is provided with a fixing cap 400 on the outside of the water nozzle 110 to confine the impeller 320 within the water nozzle 110 and prevent the impeller 320 from falling out of the housing 100. The fixing cap 400 is provided with multiple water passage holes 410 to ensure that the water nozzle 110 can spray or draw in water normally, and at the same time, the fixing cap 400 blocks large impurities.

[0035] In this embodiment, the fixing cap 400 is detachably connected to the housing 100. When the impeller 320 is entangled with hair or other debris, the user can remove the fixing cap 400 from the outside of the spray nozzle 110 and remove the impeller 320 from the output shaft 330 of the drive mechanism 310 from the inside of the spray nozzle 110 for cleaning. Thus, the impeller 320 can be easily removed without disassembling the housing 100 of the pool cleaning robot 1000, making it convenient to clean the impeller 320.

[0036] Reference Figure 3 and Figure 4 In this embodiment, the main shaft 340 has a mounting hole at one end facing the drive mechanism 310. The output shaft 330 of the drive mechanism 310 is inserted into the mounting hole. The main shaft 340 and the output shaft 330 of the drive mechanism 310 are connected by a plug-in method, which facilitates the installation of the impeller 320. The output shaft 330 has a drive cut surface 331 parallel to its axis on its periphery. The drive cut surface 331 is a vertically oriented straight surface. Correspondingly, the sidewall of the mounting hole is a straight inner wall, so that when the output shaft 330 is inserted into the mounting hole, the inner wall of the mounting hole can fit against the drive cut surface 331, allowing the drive mechanism 310 to transmit torque to the main shaft 340 and the impeller 320, thereby driving the main shaft 340 and the impeller 320 to rotate.

[0037] In this embodiment, one end of the main shaft 340 facing the drive mechanism 310 abuts against the upper side of the drive mechanism 310, and the other end of the main shaft 340 away from the drive mechanism 310 abuts against the lower side of the fixing cap 400. Thus, the drive mechanism 310 and the fixing cap 400 axially limit the main shaft 340 and the impeller 320 within the spray nozzle 110, thereby eliminating the need for an additional axial limiting mechanism. When installing the impeller 320, simply insert the output shaft 330 of the drive mechanism 310 into the mounting hole of the main shaft 340, and then install the fixing cap 400 at the spray nozzle 110. The structure is simple, and the impeller 320 is easier to install and remove. At the same time, the main shaft 340 extending towards the fixing cap 400 is also easy for the user to hold when disassembling the impeller 320, making it convenient for the user to operate.

[0038] In addition, in other embodiments, the spindle 340 may also be axially limited to the output shaft 330 of the drive mechanism 310 by means of threaded connection, pin locking, etc., so that the spindle 340 does not abut against the fixed cap 400.

[0039] In this embodiment, a bearing is provided on the side of the fixed cap 400 facing the impeller 320. The outer ring of the bearing is fixedly connected to the fixed cap 400, and the inner ring of the bearing is engaged with the end of the main shaft 340 away from the drive mechanism 310. Thus, by engaging the main shaft 340 and the fixed cap 400 with the bearing, wear between the main shaft 340 and the fixed cap 400 is reduced, thereby extending the service life of the pool cleaning robot 1000.

[0040] In this embodiment, the bearing is preferably a 304 stainless steel deep groove ball bearing to enhance the bearing's corrosion resistance during long-term use in water and extend its service life.

[0041] The main shaft 340 has an annular stepped groove 341 at one end near the bearing, which makes the diameter of the end of the main shaft 340 near the bearing smaller than the diameter of the middle part of the main shaft 340. As a result, when this end of the main shaft 340 is inserted into the inner ring of the bearing, the inner ring of the bearing fits into the stepped groove 341, thereby making the main shaft 340 stably confined below the bearing and preventing the main shaft 340 from axially moving during rotation.

[0042] Reference Figure 2 and Figure 3 The housing 100 has a connecting cylinder 120 protruding outwards, with open ends. The connecting cylinder 120 is coaxial with the water nozzle 110 and surrounds the outside of the water nozzle 110. The fixing cap 400 is detachably covered on the end of the connecting cylinder 120 away from the water nozzle 110. This allows the fixing cap 400 to be connected to the part of the housing 100 outside the water nozzle 110. Compared to the traditional pool cleaning robot 100 where the fixing cap 400 is fixed in the water nozzle 110, in this embodiment, the fixing cap 400 is more convenient for the user to install and remove from the housing 100.

[0043] In this embodiment, the connecting cylinder 120 has an external thread on its outer periphery, and the fixing cap 400 has an internal thread on its inner periphery. The fixing cap 400 is threadedly engaged with the connecting cylinder 120, thereby achieving a detachable connection between the fixing cap 400 and the connecting cylinder 120. Furthermore, in other embodiments, the fixing cap 400 can be detachably connected to the connecting cylinder 120 using a snap-fit ​​or other suitable method.

[0044] The fixed cap 400 is a cylindrical component with a bottom on one side and an open side. Multiple water passage holes 410 are arranged in a honeycomb pattern on the fixed cap 400 to reduce water outlet resistance while ensuring the fixed cap 400's blocking effect on impurities above the spray nozzle 110.

[0045] The fixed cap 400 is provided with friction stripes 420 on its periphery. The friction stripes 420 include multiple convex strips extending along the axial direction of the fixed cap 400, thereby facilitating the rotation of the fixed cap 400 to realize the assembly and disassembly of the fixed cap 400 and the connecting cylinder 120.

[0046] The above description is only a preferred embodiment of the present utility model. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the claims of the present utility model patent application are included in the scope of the present utility model patent application.

Claims

1. A swimming pool cleaning robot with detachable impeller, characterized in that, The pool cleaning robot (1000) comprises a shell (100) and a water pump mechanism (300), the shell (100) is provided with a water spraying opening (110), the water pump mechanism (300) comprises a driving mechanism (310) and an impeller (320), the driving mechanism (310) is arranged in the shell (100); The water spraying opening (110) is provided with a fixed cap (400), the fixed cap (400) is provided with a plurality of water passing holes (410), the fixed cap (400) is detachably connected to the shell (100); the diameter of the water spraying opening (110) is greater than the diameter of the impeller (320), the impeller (320) is arranged in the water spraying opening (110); the center of the impeller (320) is provided with a main shaft (340) along the axis, the main shaft (340) is detachably connected to the output shaft (330) of the driving mechanism (310), the driving mechanism (310) drives the rotation of the impeller (320).

2. The impeller detachable pool cleaning robot according to claim 1, wherein, The main shaft (340) is provided with a mounting hole at one end towards the driving mechanism (310), the output shaft (330) of the driving mechanism (310) is inserted into the mounting hole, the output shaft (330) is provided with a driving surface (331) parallel to the axis of the output shaft (330) on the side, and the inner wall of the mounting hole is matched with the driving surface (331).

3. The impeller detachable pool cleaning robot according to claim 2, wherein, One end of the main shaft (340) towards the driving mechanism (310) abuts against the driving mechanism (310), and the other end of the main shaft (340) away from the driving mechanism (310) abuts against the fixed cap (400).

4. The impeller detachable pool cleaning robot according to claim 3, wherein, One side of the fixed cap (400) towards the impeller (320) is provided with a bearing, the outer ring of the bearing is connected to the fixed cap (400), and the inner ring of the bearing is engaged with the end of the main shaft (340) away from the driving mechanism (310).

5. The impeller detachable pool cleaning robot according to claim 4, wherein, The main shaft (340) is provided with an annular stepped groove (341) at one end close to the bearing, and the inner ring of the bearing is matched with the stepped groove (341).

6. The impeller detachable pool cleaning robot according to claim 1, wherein, The shell (100) is outwardly provided with a connecting cylinder (120), the connecting cylinder (120) is coaxial with the water spraying opening (110) and surrounds the water spraying opening (110) outside, and the fixed cap (400) is detachably covered at one end of the connecting cylinder (120) away from the water spraying opening (110).

7. A pool cleaning robot with detachable impeller according to claim 6, wherein, The outer periphery of the connecting cylinder (120) is provided with external threads, and the inner periphery of the fixed cap (400) is provided with internal threads, and the fixed cap (400) is threadedly matched with the connecting cylinder (120).

8. The impeller detachable pool cleaning robot according to claim 1, wherein, The circumferential side of the fixed cap (400) is provided with friction stripes (420).

9. The impeller detachable pool cleaning robot according to claim 1, wherein, A plurality of water passing holes (410) are arranged in the fixed cap (400) in a honeycomb shape.

10. The impeller detachable pool cleaning robot according to claim 1, wherein, The driving mechanism (310) comprises a motor and a motor box, the motor box is sealed and enclosed outside the motor, the rotating shaft of the motor extends out of the motor box and is connected with the main shaft (340).

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