Motor box assembly of cleaning robot and cleaning robot

Abstract

The application provides a motor box assembly and a cleaning robot. The motor box assembly of the cleaning robot comprises a shell, the shell has a cavity with an open end; a cover is arranged at the opening of the shell to seal the cavity; a circuit board is arranged in the cavity and close to the cover; a water pump assembly comprises a first motor and a water pump impeller, the first motor is arranged in the cavity and its output shaft is exposed outside the cavity, the water pump impeller is arranged on the output shaft of the first motor, and the first motor drives the water pump impeller to rotate to drive the liquid to flow through the cover. The motor box assembly of the application can better dissipate heat from the circuit board.

Description

Technical Field

[0001] This application relates to the field of robotics, specifically to a motor housing assembly for a cleaning robot and the cleaning robot itself. Background Technology

[0002] Pool cleaning robots are used to remove debris from underwater surfaces, significantly reducing the difficulty and labor costs of underwater cleaning. However, the circuit boards of these robots generate a lot of heat during operation, which can easily lead to overheating and damage. Utility Model Content

[0003] This application provides a motor box assembly for a cleaning robot, which can better dissipate heat from the circuit board.

[0004] In a first aspect, embodiments of this application provide a motor housing assembly for a cleaning robot, the motor housing assembly comprising:

[0005] A housing having a receiving cavity open at one end;

[0006] A cover, located at the opening of the housing, for sealing the accommodating cavity;

[0007] A circuit board, which is located within the accommodating cavity and close to the cover;

[0008] A water pump assembly, comprising a first motor and a water pump impeller, wherein the first motor is located inside the accommodating cavity and its output shaft is exposed outside the accommodating cavity, and the water pump impeller is disposed on the output shaft of the first motor, and the first motor drives the water pump impeller to rotate to drive liquid to flow through the cover.

[0009] Furthermore, the water pump assembly also includes a protective cover, which is disposed on the cover and located on the outer periphery of the water pump impeller. An inlet channel and an outlet channel are formed between the protective cover and the water pump impeller. The inlet channel is located between the lower part of the protective cover and the water pump impeller, and the outlet channel is located between the upper part of the protective cover and the water pump impeller.

[0010] Furthermore, the protective cover includes a main body, a water inlet, and a water outlet. The water inlet is located on the periphery of the main body and communicates with the water inlet channel, while the water outlet is located on the top of the main body and communicates with the water outlet channel.

[0011] Furthermore, the water pump assembly comprises two units, which are respectively located on both sides of the cover.

[0012] Furthermore, the motor box assembly also includes a mounting bracket disposed between the housing and the cover and close to the cover, the mounting bracket being used to support the circuit board.

[0013] Furthermore, the mounting bracket includes a mounting portion and a plurality of connecting portions. The mounting portion is used to mount the circuit board, and the plurality of connecting portions are spaced apart around the outer periphery of the mounting portion, and the plurality of connecting portions are respectively connected to the housing.

[0014] Furthermore, the accommodating cavity is located on the side of the mounting bracket away from the cover, and the accommodating cavity includes a first sub-cavity and a second sub-cavity spaced apart. The first sub-cavity is used to install the first motor. The motor box assembly also includes a power supply module, which is disposed in the second sub-cavity and electrically connected to the circuit board. The mounting bracket covers the second sub-cavity.

[0015] Furthermore, the accommodating cavity also includes a third sub-cavity, which is spaced apart from the first sub-cavity and the second sub-cavity respectively; the motor box assembly also includes a second motor, which is disposed in the third sub-cavity and electrically connected to the circuit board for driving the cleaning robot to move.

[0016] Furthermore, the mounting bracket also covers the third sub-cavity to isolate the second motor from the circuit board;

[0017] The second motor is located in the third sub-cavity and the output shaft of the second motor passes through the housing and extends to the side of the housing away from the receiving cavity.

[0018] Secondly, embodiments of this application also provide a cleaning robot, the cleaning robot comprising:

[0019] Body; and

[0020] The motor box assembly described in this application embodiment is supported on the machine body.

[0021] The motor housing assembly of the cleaning robot in this application embodiment includes a housing, a cover, a circuit board, and a water pump assembly. The housing has an accommodating cavity with one open end; the cover is disposed at the opening of the housing and is used to seal the accommodating cavity; the circuit board is located within the accommodating cavity and is disposed close to the cover; the water pump assembly includes a first motor and a water pump impeller. The first motor is located within the accommodating cavity, and its output shaft is exposed outside the accommodating cavity. The water pump impeller is disposed on the output shaft of the first motor. The first motor drives the water pump impeller to rotate, thereby driving liquid to flow through the cover. By placing the circuit board close to the cover, when the first motor starts and drives the water pump impeller to rotate, the water pump impeller can drive liquid to flow through the side of the cover away from the housing corresponding to the position of the circuit board. This liquid flow carries away the heat generated by the circuit board, thus dissipating heat and preventing damage to the circuit board due to overheating. Furthermore, the heat dissipation of the circuit board is achieved through the existing water pump assembly in the motor housing, eliminating the need for an additional heat dissipation device, saving costs for the motor housing assembly, and making the motor housing assembly more compact. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the structure of a motor box assembly according to an embodiment of this application.

[0024] Figure 2 This is a partially exploded structural diagram of a motor box assembly according to an embodiment of this application.

[0025] Figure 3 This is an exploded structural diagram of a motor box assembly according to an embodiment of this application.

[0026] Figure 4 This application describes a motor box assembly along... Figure 1 A schematic diagram of the cross-sectional structure along the AA direction.

[0027] Figure 5 This is a schematic diagram of the structure of a protective cover according to an embodiment of this application.

[0028] Figure 6 This application describes a motor box assembly along... Figure 1 Schematic diagram of the cross-sectional structure in the middle BB direction.

[0029] Figure 7 This is a schematic diagram of the structure of the housing according to an embodiment of this application.

[0030] Figure 8 This is a structural schematic diagram of the housing from another perspective of an embodiment of this application.

[0031] Figure 9 This is a schematic diagram of the structure of a cleaning robot according to an embodiment of this application.

[0032] Explanation of reference numerals in the attached figures:

[0033] 100-Motor box assembly, 10-House, 11-Accommodation cavity, 111-First sub-cavity, 112-Second sub-cavity, 113-Third sub-cavity, 20-Cover, 30-Circuit board, 40-Water pump assembly, 41-First motor, 411-First drive unit, 412-First output shaft, 42-Water pump impeller, 43-Protective cover, 431-Main body, 432-Water inlet channel, 434-Water outlet channel, 435-Water inlet, 436-Water outlet, 50-Mounting bracket, 51-Mounting part, 52-Connecting part, 521-Mounting hole, 60-Power supply module, 70-Second motor, 71-Second drive unit, 72-Second output shaft, 200-Cleaning robot, 210-Body, 220-Cleaning brush, 230-Garbage collection device, 250-Wheel. Detailed Implementation

[0034] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present application.

[0035] The terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish different objects, not to describe a specific order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or apparatuses.

[0036] The technical solutions in the embodiments of this application will now be described with reference to the accompanying drawings.

[0037] It should be noted that, for ease of explanation, the same reference numerals denote the same components in the embodiments of this application, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments.

[0038] Pool cleaning robots are used to remove debris from underwater surfaces, significantly reducing the difficulty and labor costs of underwater cleaning. However, the circuit boards of these robots generate a lot of heat during operation, which can easily lead to overheating and damage.

[0039] Figure 1 This is a schematic diagram of the structure of a motor box assembly 100 according to an embodiment of this application. Figure 2 This is a partially exploded structural diagram of a motor box assembly 100 according to an embodiment of this application. Figure 3 This is an exploded structural diagram of a motor box assembly 100 according to an embodiment of this application.

[0040] Please see Figures 1 to 3 This application provides a motor housing assembly 100 for a cleaning robot. The motor housing assembly 100 includes a housing 10, a cover 20, a circuit board 30, and a water pump assembly 40. The housing 10 has a receiving cavity 11 with one end open. The cover 20 is disposed at the opening of the housing 10 and is used to seal the receiving cavity 11. The circuit board 30 is located inside the receiving cavity 11 and is disposed close to the cover 20. The water pump assembly 40 includes a first motor 41 and a water pump impeller 42. The first motor 41 is located inside the receiving cavity 11 and its output shaft is exposed outside the receiving cavity 11. The water pump impeller 42 is disposed on the output shaft of the first motor 41. The first motor 41 drives the water pump impeller 42 to rotate so as to drive liquid (e.g., water) to flow through the cover 20.

[0041] The motor box assembly 100 of this application embodiment can be applied to a cleaning robot for controlling the robot's work and movement. Optionally, the cleaning robot can be applied to cleaning trash in swimming pools, ponds, etc. The cleaning robot can clean trash on the water surface, and can also submerge underwater to clean underwater trash and the surface of the pool bottom and side walls.

[0042] Understandably, the housing 10 and the cover 20 cooperate to form a closed accommodating cavity 11 to isolate the accommodating cavity 11 from the external environment.

[0043] Understandably, the circuit board 30 is positioned close to the opening of the accommodating cavity 11.

[0044] It should be noted that the output shaft of the first motor 41 is exposed outside the accommodating cavity 11. Understandably, the output shaft of the first motor 41 passes through the cover 20 and protrudes from the side of the cover 20 away from the housing 10.

[0045] Optionally, the water pump impeller 42 is disposed on the side of the cover 20 away from the housing 10 and sleeved on the output shaft of the first motor 41, so as to rotate under the drive of the first motor 41, thereby driving the liquid to flow through the side of the cover 20 away from the housing 10, so as to dissipate heat from the circuit board 30.

[0046] Optionally, the first motor 41 may be, but is not limited to, a water pump motor.

[0047] Optionally, the first motor 41 is positioned close to the circuit board 30. This allows the first motor 41 to drive the water pump impeller 42 to rotate, thereby better driving the fluid to flow through the cover 20 near the circuit board 30 and thus better dissipating heat from the circuit board 30.

[0048] Please see again Figure 2 Optionally, the first motor 41 includes a first drive unit 411 and a first output shaft 412 connected together. The first drive unit 411 is located in the accommodating cavity 11 and is used to drive the first output shaft 412 to rotate. The first output shaft 412 passes through the cover 20 and extends to the side of the cover 20 away from the housing 10. The end of the first output shaft 412 away from the first drive unit 411 is connected to the water pump impeller 42. When the first drive unit 411 drives the first output shaft 412 to rotate, it drives the water pump impeller 42 to drive the liquid to flow through the side of the cover 20 away from the housing 10 corresponding to the position of the circuit board 30.

[0049] It should be noted that when the motor housing assembly 100 is applied to the cleaning robot, and the cleaning robot is cleaning up trash, the water pump assembly 40 is also used to drive fluid flow through the cleaning robot's trash collection device to achieve trash collection and cleaning. Furthermore, when the cleaning robot is used to clean the side walls of a swimming pool, the water pump assembly 40 is used to spray water towards the side away from the housing 10, thereby generating a force from the cover 20 towards the housing 10, so that the cleaning robot can simply press against or adhere to the side wall without falling off.

[0050] The motor housing assembly 100 of the cleaning robot in this embodiment includes a housing 10, a cover 20, a circuit board 30, and a water pump assembly 40. The housing 10 has a receiving cavity 11 with one end open; the cover 20 is disposed at the opening of the housing 10 and is used to seal the receiving cavity 11; the circuit board 30 is located inside the receiving cavity 11 and is disposed close to the cover 20; the water pump assembly 40 includes a first motor 41 and a water pump impeller 42. The first motor 41 is located inside the receiving cavity 11 and its output shaft is exposed outside the receiving cavity 11. The water pump impeller 42 is disposed on the output shaft of the first motor 41. The first motor 41 drives the water pump impeller 42 to rotate so as to drive liquid to flow through the cover 20. By positioning the circuit board 30 close to the cover 20, when the first motor 41 starts and drives the water pump impeller 42 to rotate, the water pump impeller 42 can drive the liquid to flow through the side of the cover 20 away from the housing 10 corresponding to the position of the circuit board 30. This liquid flow carries away the heat generated by the circuit board 30, thus dissipating heat from the circuit board 30 and preventing damage due to overheating. In addition, the heat dissipation of the circuit board 30 is achieved by the original water pump assembly 40 of the motor box assembly 100, eliminating the need for an additional heat dissipation device, saving the cost of the motor box assembly 100, and making the motor box assembly 100 more compact.

[0051] Figure 4 The motor box assembly 100 of one embodiment of this application is along Figure 1 A schematic diagram of the cross-sectional structure along the AA direction.

[0052] Please see Figure 4 In some embodiments, the water pump assembly 40 further includes a protective cover 43, which is disposed on the cover 20 and located on the outer periphery of the water pump impeller 42. A water inlet channel 432 and a water outlet channel 434 are formed between the protective cover 43 and the water pump impeller 42. The water inlet channel 432 is located between the lower part of the protective cover 43 and the water pump impeller 42, and the water outlet channel 434 is located between the upper part of the protective cover 43 and the water pump impeller 42.

[0053] Understandably, the protective cover 43 is disposed on the side of the cover 20 away from the housing 10 and covers the outer periphery of the water pump impeller 42.

[0054] Understandably, the water inlet channel 432 is located close to the cover 20, and the water outlet channel 434 is located away from the cover 20. The water inlet channel 432 and the water outlet channel 434 are connected.

[0055] Understandably, the pump impeller 42 is located in the cavity enclosed by the cover 20 and the protective cover 43.

[0056] When the first motor 41 starts, it drives the water pump impeller 42 to rotate. The rotation of the water pump impeller 42 drives the liquid to enter the protective cover 43 from the water inlet channel 432 and flow out from the water outlet channel 434, thereby driving the liquid to flow over the cover 20 to dissipate heat on the circuit board 30 on the side of the cover facing the housing 10.

[0057] In this embodiment, the water pump impeller 42 can be protected by the protective cover 43, thereby improving the service life of the water pump impeller 42. In addition, the design of the water inlet channel 432 and the water outlet channel 434 formed between the water pump impeller 42 and the protective cover 43 ensures that the water inlet channel 432 is located at the lower part of the protective cover 43 and the water pump impeller 42 near the cover plate, and the water outlet channel 434 is located at the upper part of the protective cover 43 and the water pump impeller 42. This allows the fluid to flow over the top of the cover 20, thereby better dissipating heat from the circuit board 30 on the side of the cover 20 facing the housing 10, and better preventing the circuit board 30 from being damaged due to excessive temperature.

[0058] Figure 5 This is a schematic diagram of the structure of the protective cover 43 according to an embodiment of this application.

[0059] Please see Figure 5 In some embodiments, the protective cover 43 includes a main body 431, a water inlet 435 and a water outlet 436. The water inlet 435 is located on the periphery of the main body 431 and communicates with the water inlet channel 432. The water outlet 436 is located on the top of the main body 431 and communicates with the water outlet channel 434.

[0060] Understandably, the main body 431 and the water pump impeller 42 form an inlet channel 432 and an outlet channel 434.

[0061] Optionally, the water inlet 435 is located on the periphery of the main body 431 and close to the cover 20. The water outlet 436 is located on the side of the main body 431 away from the cover 20.

[0062] Understandably, the inlet 435, the inlet channel 432, the outlet channel 434, and the outlet 436 are connected in sequence. When the first motor 41 starts and drives the pump impeller 42 to rotate, the fluid enters through the inlet 435, flows through the inlet channel 432 and the outlet channel 434 in sequence, and finally flows out through the outlet 436.

[0063] Optionally, there may be multiple water inlets 435, which are spaced apart around the periphery of the main body 431, and each water inlet 435 is connected to the water inlet channel 432. The term "multiple" means two or more.

[0064] Optionally, there are multiple water outlets 436, which are spaced apart on the top of the main body 431, and each water outlet 436 is connected to the water outlet channel 434.

[0065] In this embodiment, the inlet 435 is located on the periphery of the main body 431 and communicates with the inlet channel 432, while the outlet 436 is located on the top of the main body 431 and communicates with the outlet channel 434. When the first motor 41 starts and drives the water pump impeller 42 to rotate, the driving fluid flows across the extended plane of the cover 20, enters the inlet 435, and then flows through the inlet channel 432 and the outlet channel 434 in sequence, exiting through the outlet 436. This can better accelerate heat exchange on the cover 20, better dissipate heat from the circuit board 30 located on the side of the cover 20 facing the housing 10, and better prevent the circuit board 30 from being damaged due to overheating.

[0066] Please see again Figure 4 In some embodiments, the water pump assembly 40 includes two pump assemblies 40, which are respectively located on both sides of the cover 20.

[0067] Understandably, the two water pump assemblies are spaced 40 degrees apart.

[0068] Optionally, the two pump assemblies 40 are located on opposite sides of the circuit board 30. In other words, the circuit board 30 is located between the two pump assemblies 40.

[0069] Optionally, the two pump assemblies 40 are arranged symmetrically.

[0070] Optionally, the water inlets 435 on the periphery of the protective covers 43 of the two water pump assemblies 40 are at least partially facing each other, that is, at least part of the water inlets 435 are facing the circuit board 30.

[0071] In this embodiment, by setting two water pump assemblies 40, the cooperation of the two water pump assemblies 40 can better drive the fluid to flow through the entire cover 20, thereby accelerating the flow speed of the fluid on the cover 20, improving the heat dissipation efficiency of the circuit board 30, and better preventing the circuit board 30 from being damaged due to excessive temperature.

[0072] Please see again Figure 3 In some embodiments, the motor box assembly 100 further includes a mounting bracket 50 disposed between the housing 10 and the cover 20 and close to the cover 20, the mounting bracket 50 being used to support the circuit board 30.

[0073] Optionally, the circuit board 30 is located between the mounting bracket 50 and the cover 20.

[0074] Understandably, the mounting bracket 50 is positioned close to the opening of the receiving cavity 11.

[0075] Optionally, the mounting bracket 50 is fixed to the housing 10. Specifically, the mounting bracket 50 can be fixed to the housing 10 using fasteners such as screws, studs, etc. In other embodiments, the mounting bracket 50 can also be fixed to the housing 10 by means of snap-fit, adhesive, etc.

[0076] Optionally, the mounting bracket 50 is an insulated mounting bracket 50, which can better prevent short circuits from occurring inside the motor box assembly 100.

[0077] Optionally, the mounting bracket 50 is a heat-insulating mounting bracket 50, which can better transfer the heat generated by the surface circuit board 30 to other parts of the motor box assembly 100, thereby preventing the normal operation of other components of the motor box assembly 100.

[0078] In this embodiment, by setting a mounting bracket 50 between the housing 10 and the cover 20 to install the circuit board 30, the circuit board 30 can be more securely installed between the housing 10 and the cover 20. When the motor box assembly 100 is applied to a cleaning robot, the circuit board 30 can be better prevented from shaking during the movement of the cleaning robot, improving the stability of the circuit connection and thus increasing the service life of the motor box assembly 100.

[0079] Please see again Figure 3 In some embodiments, the mounting bracket 50 includes a mounting portion 51 and a plurality of connecting portions 52. The mounting portion 51 is used to mount the circuit board 30, and the plurality of connecting portions 52 are spaced around the outer periphery of the mounting portion 51. The plurality of connecting portions 52 are respectively connected to the housing 10.

[0080] Optionally, each of the connecting portions 52 has a mounting hole 521 for inserting fasteners such as screws, studs, and bolts to connect the mounting bracket 50 to the housing 10.

[0081] Optionally, the plurality of connecting portions 52 are bent and connected to the mounting portion 51, and all the connecting portions 52 are bent relative to the mounting portion 51 towards the cover 20. At least a portion of the connecting portions 52 and the mounting portion 51 form a mounting space, which is used to mount the circuit board 30. Optionally, a portion of the plurality of connecting portions 52 abuts against the circuit board 30, thereby limiting the circuit board 30 and better confining it within the mounting space. This better prevents the circuit board 30 from shaking during the operation of the cleaning robot when the motor box assembly 100 is used, thus pulling the internal wiring of the motor box assembly 100 and damaging the wiring connections, affecting the normal operation of the cleaning robot.

[0082] In this embodiment, the cooperation between the mounting part 51 and the multiple connecting parts 52 allows for better installation of the circuit board 30 and better positioning of the circuit board 30, thereby improving the stability and reliability of the circuit board 30 installation.

[0083] Please see again Figure 4 In some embodiments, the accommodating cavity 11 is located on the side of the mounting bracket 50 opposite to the cover 20. The accommodating cavity 11 includes a first sub-cavity 111 and a second sub-cavity 112 spaced apart. The first sub-cavity 111 is used to install the first motor 41. The motor box assembly 100 also includes a power supply module 60, which is disposed in the second sub-cavity 112. The power supply module 60 is electrically connected to the circuit board 30 and is used to supply power to the circuit board 30. The mounting bracket 50 covers the second sub-cavity 112.

[0084] Understandably, the power supply module 60, the mounting bracket 50, and the circuit board 30 are stacked sequentially. The mounting bracket 50 isolates the circuit board 30 from the power supply module 60.

[0085] Optionally, there are two first sub-cavities 111, with the two first sub-cavities 111 located on opposite sides of the second sub-cavity 112. Each first sub-cavity 111 is used to house a water pump assembly 40.

[0086] Optionally, the first sub-cavity 111 is connected to the second sub-cavity 112.

[0087] Understandably, the second sub-cavity 112 is located below the circuit board 30, and the two first sub-cavities 111 are located on opposite sides of the circuit board 30.

[0088] Optionally, the power supply module 60 can be, but is not limited to, a battery module. The battery module includes multiple adjacent battery cells, which are electrically connected to each other. Optionally, the multiple battery cells can be connected in series, parallel, or a combination thereof.

[0089] In this embodiment, when the motor box assembly 100 is working, the power supply module 60 is the main heat-generating component. The mounting bracket 50 isolates the power supply module 60 from the circuit board 30. This prevents the heat generated by the power supply module 60 from being transferred to the circuit board 30 during operation, thus avoiding overheating of the circuit board 30 and damage to the electronic components on the circuit board 30, which would affect the normal operation of the motor box assembly 100.

[0090] Figure 6 The motor box assembly 100 of one embodiment of this application is along Figure 1 Schematic diagram of the cross-sectional structure in the middle BB direction. Figure 7 This is a schematic diagram of the structure of the housing 10 according to an embodiment of this application. Figure 8 This is a structural schematic diagram of the housing 10 according to another embodiment of this application.

[0091] Please see Figure 2 , Figures 6 to 8 In some embodiments, the accommodating cavity 11 further includes a third sub-cavity 113, which is spaced apart from the first sub-cavity 111 and the second sub-cavity 112 respectively; the motor box assembly 100 further includes a second motor 70, which is disposed in the third sub-cavity 113 and electrically connected to the circuit board 30 for driving the cleaning robot to move.

[0092] Understandably, in this embodiment, the accommodating cavity 11 includes a first sub-cavity 111, a second sub-cavity 112, and a third sub-cavity 113.

[0093] Optionally, the second motor 70 is also electrically connected to the power supply module 60, which is also used to supply power to the second motor 70.

[0094] Optionally, the first sub-cavity 111 and the second sub-cavity 112 are located on the same side of the third sub-cavity 113.

[0095] Optionally, the second motor 70 may be, but is not limited to, a drive motor.

[0096] Optionally, there are two second motors 70, which are spaced apart in the third sub-cavity 113. Optionally, the arrangement direction of the two first motors 41 is parallel to the arrangement direction of the two second motors 70.

[0097] In this embodiment, by providing a third sub-cavity 113 and installing the second motor 70 within it, the second motor 70 can be better confined within the third sub-cavity 113, thereby improving the stability and reliability of the second motor 70's installation. Furthermore, by spacing the third sub-cavity 113 from both the first sub-cavity 111 and the second sub-cavity 112, the components inside the motor housing assembly 100 can be installed more compactly, resulting in a smaller motor housing assembly 100.

[0098] Please see again Figure 6 In some embodiments, the mounting bracket 50 also covers the third sub-cavity 113 to isolate the second motor 70 from the circuit board 30.

[0099] Optionally, the second motor 70 is located in the third sub-cavity 113 and the output shaft of the second motor 70 passes through the housing 10 and extends to the side of the housing 10 opposite to the receiving cavity 11.

[0100] Understandably, the mounting bracket 50 is also located between the circuit board 30 and the second motor 70.

[0101] Understandably, the mounting bracket 50 extends from the second sub-cavity 112 to the third sub-cavity 113. The mounting bracket 50 covers both the second sub-cavity 112 and the third sub-cavity 113.

[0102] Please see again Figure 2 Optionally, the second motor 70 further includes a connected second drive unit 71 and a second output shaft 72. The second drive unit 71 is located within the third sub-cavity 113 and is used to drive the second output shaft 72 to rotate. The second output shaft 72 passes through the housing 10 and extends to the side of the housing 10 opposite to the receiving cavity 11. That is, the second output shaft 72 extends to the outside of the housing 10 to connect to the driving wheels of the cleaning robot, so that when the second motor 70 is started, it can drive the driving wheels to rotate, thereby driving the cleaning robot to move.

[0103] In this embodiment, by having the mounting bracket 50 also cover the third sub-cavity 113, the second motor 70 is isolated from the circuit board 30. This better prevents carbon dust generated by the second motor 70 during operation from being emitted onto the circuit board 30, thus preventing carbon dust from damaging the electronic components on the circuit board 30 and improving the service life of the circuit board 30.

[0104] Figure 9 This is a schematic diagram of the structure of a cleaning robot 200 according to an embodiment of this application.

[0105] Please see Figure 9 This application also provides a cleaning robot 200, which includes a body 210 and a motor box assembly 100 as described in this application embodiment, the motor box assembly 100 being supported on the body 210.

[0106] The cleaning robot 200 of this application can be used for cleaning trash in swimming pools, ponds, etc. The cleaning robot 200 can clean trash on the water surface, and can also submerge underwater to clean underwater trash, as well as clean the surface of the pool bottom and side walls.

[0107] For a detailed description of other aspects of the motor box assembly 100, please refer to the description of the corresponding part of the above embodiments, which will not be repeated here.

[0108] Optionally, the cleaning robot 200 further includes a cleaning brush 220, a waste collection device 230, and a drive propeller (not shown). The cleaning brush 220, waste collection device 230, and drive propeller are arranged sequentially along the travel direction of the cleaning robot 200. The cleaning brush 220 and the drive propeller are rotatably mounted on the body 210. The cleaning brush 220 is used for cleaning, and the drive propeller is used to drive the cleaning robot 200 to move on the water surface.

[0109] Optionally, the cleaning robot 200 further includes driving wheels 250, which are connected to the second output shaft 72 of the second motor 70 and are used to rotate under the drive of the second motor 70 to drive the cleaning robot 200 to walk.

[0110] This application embodiment of the cleaning robot 200 includes a motor housing assembly 100, which includes a housing 10, a cover 20, a circuit board 30, and a water pump assembly 40. The housing 10 has a receiving cavity 11 with one end open; the cover 20 is disposed at the opening of the housing 10 and is used to seal the receiving cavity 11; the circuit board 30 is located inside the receiving cavity 11 and is disposed close to the cover 20; the water pump assembly 40 includes a first motor 41 and a water pump impeller 42. The first motor 41 is located inside the receiving cavity 11 and its output shaft is exposed outside the receiving cavity 11. The water pump impeller 42 is disposed on the output shaft of the first motor 41. The first motor 41 drives the water pump impeller 42 to rotate so as to drive liquid to flow through the cover 20. By positioning the circuit board 30 close to the cover 20, when the first motor 41 starts and drives the water pump impeller 42 to rotate, the water pump impeller 42 can drive the liquid to flow through the side of the cover 20 away from the housing 10 corresponding to the position of the circuit board 30. This liquid flow carries away the heat generated by the circuit board 30, thus dissipating heat from the circuit board 30 and preventing damage due to overheating. In addition, the heat dissipation of the circuit board 30 is achieved by the original water pump assembly 40 of the motor box assembly 100, eliminating the need for an additional heat dissipation device, saving the cost of the motor box assembly 100, and making the motor box assembly 100 more compact.

[0111] In this application, the terms "embodiment" and "implementation" mean that a specific feature, structure, or characteristic described in connection with an embodiment can be included in at least one embodiment of this application. The appearance of these phrases in various locations throughout the specification does not necessarily refer to the same embodiment, nor are they independent or alternative embodiments mutually exclusive with other embodiments. Those skilled in the art will understand, explicitly and implicitly, that the embodiments described in this application can be combined with other embodiments. Furthermore, it should be understood that the features, structures, or characteristics described in the various embodiments of this application can be arbitrarily combined to form yet another embodiment that does not depart from the spirit and scope of the technical solution of this application, provided there is no contradiction between them.

[0112] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application and are not intended to limit it. Although this application has been described in detail with reference to the above preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions to the technical solutions of this application should not depart from the spirit and scope of the technical solutions of this application.

Claims

1. A motor housing assembly for a cleaning robot, characterized in that, The motor box assembly includes: A housing having a receiving cavity open at one end; A cover, located at the opening of the housing, for sealing the accommodating cavity; A circuit board, which is located within the accommodating cavity and close to the cover; A water pump assembly, comprising a first motor and a water pump impeller, wherein the first motor is located inside the accommodating cavity and its output shaft is exposed outside the accommodating cavity, and the water pump impeller is disposed on the output shaft of the first motor, and the first motor drives the water pump impeller to rotate to drive liquid to flow through the cover.

2. The motor housing assembly of the cleaning robot according to claim 1, characterized in that, The water pump assembly also includes a protective cover, which is disposed on the cover and located on the outer periphery of the water pump impeller. An inlet channel and an outlet channel are formed between the protective cover and the water pump impeller. The inlet channel is located between the lower part of the protective cover and the water pump impeller, and the outlet channel is located between the upper part of the protective cover and the water pump impeller.

3. The motor housing assembly of the cleaning robot according to claim 2, characterized in that, The protective cover includes a main body, a water inlet, and a water outlet. The water inlet is located on the periphery of the main body and communicates with the water inlet channel. The water outlet is located on the top of the main body and communicates with the water outlet channel.

4. The motor housing assembly of the cleaning robot according to claim 1, characterized in that, The water pump assembly includes two components, which are located on opposite sides of the cover.

5. The motor housing assembly of the cleaning robot according to claim 1, characterized in that, The motor box assembly also includes a mounting bracket, which is disposed between the housing and the cover and close to the cover, and is used to support the circuit board.

6. The motor housing assembly of the cleaning robot according to claim 5, characterized in that, The mounting bracket includes a mounting part and multiple connecting parts. The mounting part is used to mount the circuit board. The multiple connecting parts are spaced apart around the outer periphery of the mounting part and are respectively connected to the housing.

7. The motor housing assembly of the cleaning robot according to claim 5, characterized in that, The accommodating cavity is located on the side of the mounting bracket away from the cover. The accommodating cavity includes a first sub-cavity and a second sub-cavity spaced apart. The first sub-cavity is used to install the first motor. The motor box assembly also includes a power supply module, which is disposed in the second sub-cavity and electrically connected to the circuit board. The mounting bracket covers the second sub-cavity.

8. The motor housing assembly of the cleaning robot according to claim 7, characterized in that, The accommodating cavity further includes a third sub-cavity, which is spaced apart from the first sub-cavity and the second sub-cavity respectively; the motor box assembly further includes a second motor, which is disposed in the third sub-cavity and electrically connected to the circuit board for driving the cleaning robot to move.

9. The motor housing assembly of the cleaning robot according to claim 8, characterized in that, The mounting bracket also covers the third sub-cavity to isolate the second motor from the circuit board; The second motor is located in the third sub-cavity and the output shaft of the second motor passes through the housing and extends to the side of the housing away from the receiving cavity.

10. A cleaning robot, characterized in that, The cleaning robot includes: Body; and The motor housing assembly of the cleaning robot according to any one of claims 1-9, wherein the motor housing assembly of the cleaning robot is carried on the body.

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