Water pump assembly and scrubbing device

Abstract

The utility model discloses a water pump assembly which is installed on a scrubbing device with a scrubbing head, the scrubbing head is provided with a driving motor, and the water pump assembly comprises a water pump, a shell frame and an end cover assembly. A water pump is installed on the rear portion of the shell frame, a wiring cavity is formed in the front portion of the shell frame and used for containing one end of an elastic needle set electrically connected with the water pump and the driving motor, the other end of the elastic needle set is electrically connected with a power source assembly of the scrubbing device, and the power source assembly provides power for the water pump and the driving motor. The end cover assembly comprises an end cover covering the front portion of the shell frame and an elastic needle set installed on the end cover, and the other end of the elastic needle set extends out of the wiring cavity to elastically abut against the output end of the power supply assembly. The water pump is electrically connected with the vibrating needle group; the scrubbing device comprises an upper shell and a bottom shell, the water pump assembly is sealed in the scrubbing device through the upper shell and the bottom shell, and when the power supply assembly is installed on the scrubbing device, the power supply assembly is electrically connected with the water pump assembly; the shell frame and the end cover assembly enable the water pump to take electricity outwards more conveniently and enable the water pump to be connected with an external pipeline more conveniently.

Description

Technical Field

[0001] The utility model relates to the technical field of cleaning equipment, in particular to a water pump assembly for a portable scrubbing device and a scrubbing device. Background Art

[0002] Traditional car washing devices often occupy at least the space that can accommodate a whole vehicle. During the car washing process, the body is sprayed with clean water and cleaning liquid, and a large mechanical roller is used to brush and rinse the body. The whole car washing device is huge in volume, consumes a large amount of water and electricity, and has a large operating noise. In recent years, with the popularization of floor scrubbers, there has emerged a portable scrubbing device evolved from the "water and dust circulation" floor scrubber. The motor of the portable scrubbing device runs to drive the cleaning cylinder to wipe the body, and a water supply system and a water tank are also equipped in the portable scrubbing device to clean the cleaning cylinder, so as to perfectly achieve the cleaning of the body.

[0003] The existing "water and dust circulation" portable scrubbing device can realize continuous scrubbing of the body surface. The installation of the built-in water pump is relatively complex, and it also requires a cumbersome power supply and control circuit for the pump, as well as pipelines for sucking clean water from the water supply system and delivering clean water to the cleaning roller of the scrubbing device. At the same time, the water pump is only a liquid conveying component installed inside the shell of the scrubbing device and cannot provide support for the shell of the scrubbing device, and it is easy to affect the service life of the water pump when the shell of the scrubbing device is subjected to external vibration.

[0004] Chinese patents CN202410288003.3, CN202410291406.3, and CN202410291415.2 disclose a water pump assembly installed in a car washing machine with a cleaning head, including a housing, an inner housing, a water pump, a rear cover, and a front cover; the housing has a semi-closed end and an open end with an opening provided at the open end; one end of the inner housing is detachably connected to the semi-closed end, and the other end closes the open end and has an opening; the water pump includes a water inlet / outlet end and a power connection end; the rear cover is detachably connected to the opening of the housing or the inner housing, and part of the water inlet / outlet end penetrates through the rear cover; the front cover includes a front cover detachably connected to the semi-closed end and an electrode sandwiched between the front cover and the inner housing, the electrode is electrically connected to the power connection end and partially extends out of the front cover to draw power from the outside; after the water pump is sequentially installed into the inner housing and the housing, and then the front cover and the rear cover are covered, the water pump can be enclosed in the housing, so that the housing, the inner housing, the rear cover, and the front cover play a supporting role when stressed to prevent the water pump from being impacted by external forces, making it more convenient for the water pump to draw power, pump, and transport water. Chinese patent CN202410287999.6 discloses a water pump assembly and a scrubbing device. The water pump assembly is installed inside the body of the scrubbing device and includes a housing, a water pump, a water outlet end cover, a power taking end cover, and an electrode structure; a cavity is provided inside the housing; the water pump is installed in the cavity and has a first end and a second end of the water pump. The water outlet end cover closes the opening of the cavity near the scrubbing head end and is provided with a through structure for a pipeline connected to the water inlet / outlet to pass through; the power taking end cover is away from the scrubbing head, and the electrode structure is arranged between the power taking end cover and the housing; the cavity includes a first space and a second space for accommodating part of the water pump, and there is a gap between the water pump and the housing inside the cavity. Since the water pump forms two fixed surfaces at both ends through different components respectively, the water pump can play a certain supporting role on the housing when stressed, thus extending the service life. The above four patent applications are all prior applications of the applicant's affiliated company. The water pump assemblies all adopt a three-section design of a front end cover, a housing, and a water outlet end cover. The water pump is sealed in the housing located between the front end cover and the water outlet end cover. Although the three-section design increases the ability of the entire water pump assembly to resist external impacts, the water pump and the control board installed in the housing are very troublesome to disassemble in case of failure, reducing the maintainability and maintenance efficiency of the water pump assembly. Moreover, the sealing structure also hinders the heat dissipation of the water pump. Therefore, it is necessary to further improve. Summary of the Utility Model

[0005] The main technical problem to be solved by the present utility model is to provide a water pump assembly and a scrubbing device to reduce the difficulty of arranging the internal control circuit of the scrubbing device and the water pipeline for pumping and transporting clean water of the water pump. The present utility model also strengthens the mutual cooperation positions between the housing frame of the water pump assembly and the corresponding housing support positions of the scrubbing device, improving the anti-vibration ability of the water pump assembly, extending the service life of the water pump built in the scrubbing device, enhancing the overall structural rigidity of the scrubbing device, and also improving the maintainability of the water pump assembly.

[0006] To solve the above problems, in a first aspect, the present utility model provides a water pump assembly, which is installed in a scrubbing device having a scrubbing head. The scrubbing head is provided with a driving motor, and is characterized in that the water pump assembly includes:

[0007] A water pump, including a water inlet and outlet end and a power connection end. The water inlet and outlet end is connected to the scrubbing head through a pipeline.

[0008] A housing frame, on the rear part of which the water pump is installed, and on the front part of which there is a wiring cavity for accommodating one end of a set of spring pins that electrically connect the water pump and the driving motor. The other end of the set of spring pins is electrically connected to a power supply assembly of the scrubbing device, and the power supply assembly provides power for the water pump and the driving motor.

[0009] An end cover assembly, including an end cover covering the front part of the housing frame and the set of spring pins installed on the end cover. The other end of the set of spring pins extends out of the wiring cavity to elastically abut against the output end of the power supply assembly; the power connection end of the water pump is electrically connected to the set of spring pins.

[0010] Wherein, the scrubbing device includes an upper shell and a bottom shell, and the upper shell and the bottom shell seal the water pump assembly inside the scrubbing device. When the power supply assembly is installed on the scrubbing device, the power supply assembly is electrically connected to the water pump assembly.

[0011] In one or some alternative embodiments, a control board is further installed on the rear part of the housing frame. The control board is electrically connected to the water pump, the driving motor, and the set of spring pins, and the control board controls the coordinated operation of the water pump and the driving motor.

[0012] In one or some alternative embodiments, an opening is provided on the front part of the housing frame, and the end cover is hermetically covered on the opening to form the wiring cavity, so as to prevent water from passing through the end cover into the wiring cavity and also prevent water from directly passing through the front part of the housing frame to reach the rear part of the housing frame.

[0013] In one or some alternative embodiments, a partition plate that divides the housing frame into a front part and a rear part is provided at one end of the housing frame close to the opening. A wire passing hole is provided on the partition plate, and the control board is electrically connected to the set of spring pins through a wire harness passing through the wire passing hole.

[0014] In one or some alternative embodiments, the rear part is open at the top and bottom and has an H-shaped cross-section. The upper opening of the rear part is used to accommodate the control board, and the lower opening of the rear part is used to accommodate the water pump.

[0015] In one or some alternative embodiments, the set of spring pins includes:

[0016] Positive electrode spring pins, which are respectively electrically connected to the positive pole of the output end and the positive power of the control board.

[0017] The negative electrode spring pin is respectively electrically connected to the negative pole of the output terminal and the negative power of the control board;

[0018] The communication positive spring pin is respectively electrically connected to the output terminal and the communication positive pin of the control board;

[0019] The communication negative spring pin is respectively electrically connected to the output terminal and the communication negative pin of the control board.

[0020] In one or some alternative embodiments, fixing ears extend outward from both side walls of the lower opening at the rear of the housing frame, so as to fix the housing frame on the bottom shell.

[0021] In one or some alternative embodiments, a plurality of weight reduction holes are further provided on both side walls of the lower opening at the rear of the housing frame, and the weight reduction holes contribute to the heat dissipation of the water pump.

[0022] In one or some alternative embodiments, a plurality of reinforcing ribs extend from the root of the lower opening at the rear of the housing frame from top to bottom between the partition board and the water pump power connection end. The height of the downward extension of the reinforcing ribs is flush with the outer cylindrical surface of the water pump power connection end, and a gap is left between the reinforcing ribs and the two power connection electrodes of the water pump power connection end to facilitate the electrical connection of the two power connection electrodes to the control board.

[0023] In one or some alternative embodiments, reinforcing ribs extend outward from the regions of both side walls of the lower opening at the rear of the housing frame near the reinforcing ribs. The ends of the reinforcing ribs and the reinforcing ribs are adapted to the cylindrical outer surface of the water pump to protect the outer surface of the water pump from external impacts.

[0024] In one or some alternative embodiments, nut posts are provided in the upper opening at the rear, and support posts are provided on the peripheral walls of the upper opening at the rear. The support posts support the control board, and the control board can be fixed in the upper opening at the rear with screws.

[0025] In one or some alternative embodiments, a step is provided in the upper opening at the rear. The side of the step far from the front part is higher than the side closer to the front part, so as to allow the lower opening at the rear to have more space to accommodate the water pump.

[0026] In one or some alternative embodiments, the telescopic direction of the spring pin group is not on the same straight line as the water inlet and outlet direction of the water pump.

[0027] In one or some alternative embodiments, the telescopic direction of the electrode cap forms an acute angle with the water inlet and outlet direction of the water pump.

[0028] In a second aspect, the present utility model provides a cleaning device including a handle, a scrubbing head connected to the handle, a water tank, and the water pump assembly as described in the first aspect. The water pump assembly transports the clear water in the water tank to the cleaning roller on the scrubbing head.

[0029] In summary, the beneficial effects of the utility model are:

[0030] The frame of the water pump assembly fixes the water pump in an open manner between the frame and the bottom shell of the cleaning device, so that the frame and the bottom shell of the cleaning device can play a certain supporting role when subjected to force, preventing the running water pump from being impacted by external forces, and extending the service life. At the same time, the upper and lower openings of the frame have an H-shaped cross-sectional structure, which, on the one hand, facilitates the electrical connection between the water pump and the control system, and on the other hand, allows the water pump and the control system to have sufficient open heat dissipation space. The open installation space makes it more convenient for the water inlet and outlet of the water pump to be connected to the external water extraction and delivery pipelines.

[0031] The extension and retraction direction of the spring needle group installed on the end cover of the water pump assembly forms an acute angle with the water inlet and outlet direction of the water pump, so that the water pump assembly can stably achieve elastic power supply abutment and direct signal transmission abutment with the power supply assembly in the handle of the scrubbing device, providing sufficient strength support for the entire scrubbing device at the corner where the handle and the body meet, making it convenient for the user to hold the handle with one hand and / or two hands to hold the scrubbing device to clean the surface to be cleaned.

[0032] Since the other end of the water pump assembly away from the scrubbing head of the scrubbing device is provided with an end cap, and the spring needle group exposed from the end cap is close to the output end of the power assembly in the handle, the water inlet and outlet of the water pump are close to the scrubbing head, so that the distribution of the water pipeline and the power supply line is more concise, and the overall structure of the scrubbing device is compact. At the same time, the water pump assembly is formed by different components and two fixed surfaces located at both ends, so that the shell frame of the water pump assembly can play a certain supporting role when subjected to force, thereby extending the service life of the overall structure of the entire scrubbing device. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the description only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0034] Figure 1 It is a stereoscopic diagram of the water pump assembly of the utility model.

[0035] Figure 2 It is a stereoscopic diagram of the water pump assembly of the utility model from another perspective.

[0036] Figure 3 It is a three-dimensional diagram of the shell frame of the water pump assembly of the utility model.

[0037] Figure 4 It is a front view of the shell frame of the water pump assembly of the utility model.

[0038] Figure 5 It is a top view of the shell frame of the water pump assembly of the utility model.

[0039] Figure 6 It is a left view of an embodiment of a water pump assembly of the utility model.

[0040] Figure 7 It is a bottom view of an embodiment of a water pump assembly of the utility model.

[0041] Figure 8 yes Figure 1 Cross-sectional view along the AA direction.

[0042] Figure 9 It is an exploded view of the water pump assembly of the utility model.

[0043] Figure 10 It is an exploded view of the water pump assembly of the utility model from another perspective.

[0044] Figure 11 The utility model is a schematic diagram of the structure of a scrubbing device equipped with a water pump assembly.

[0045] Figure 12 It is a planing view of a scrubbing device equipped with a water pump assembly of the utility model.

[0046] Figure 13 yes Figure 12 A partial enlarged view of point C in the middle.

[0047] Description of reference numerals:

[0048] 10. Water pump assembly;

[0049] 100, shell frame; 100A, rear lower opening; 100B, rear upper opening; 101, reinforcing ribs; 102, fixing ears; 103, nut columns; 104, wire holes; 105, reinforcing side ribs; 106, weight-reducing holes; 107, fixing nut columns; 108, sealing ring clamping groove; 108', sealing ring; 109, sealing ring;

[0050] 200, end cap assembly; 200A, wiring cavity; 201, positive electrode spring pin; 202, negative electrode spring pin; 203, 485 communication positive spring pin; 204, 485 communication negative spring pin; 205, end cap;

[0051] 400, water pump; 401, water inlet; 402, water outlet;

[0052] 500, control panel;

[0053] 21. Bottom shell;

[0054] 22. Upper shell; 221. Water tank locking mechanism; 2211. Unlock button; 2212. Unlock push rod; 2213. Spring; 2214. Lock rod;

[0055] 30. Cleaning roller;

[0056] 40. Water tank assembly;

[0057] 50. Battery assembly;

[0058] The realization of the object, functional features and advantages of the present utility model will be further described with reference to the embodiments and the accompanying drawings. Detailed implementation manners

[0059] The following further elaborates in detail the claims of the present utility model with reference to specific embodiments and the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of them. All other embodiments obtained by those of ordinary skill in the art without creative efforts based on the embodiments in the present utility model also fall within the scope of protection of the present utility model.

[0060] It should be understood that in the description of the embodiments of the present utility model, all terms indicating directional indications, such as "upper", "lower", "left", "right", "front", "rear", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present utility model is usually placed during use. It is only for the convenience of simplifying the description of the present utility model, rather than explicitly or implicitly indicating that the device, element or component must have a specific orientation and specific orientation structure. It should not be construed as a limitation to the present utility model. It is only used to explain the relative positional relationship and movement situation between the components under the shown drawings. When the specific posture changes, the directional indication may also change accordingly. For processes and methods, unless it is clearly recorded in the specification that each step must be carried out in sequence and the sequence change of each step is excluded, otherwise, except for those that cannot achieve the corresponding utility model purpose, it is considered for the simplicity of description. The specification only takes the optimal or relatively optimal examples from various implementation manners for description.

[0061] In addition, in the present utility model, ordinal numbers such as "first", "second", etc. are only used for distinguishing purposes and should not be construed as indicating or implying their relative importance or implicitly indicating the quantity of the technical features indicated. The features defined by "first" and "second" can explicitly or implicitly include at least one of such technical features. In the present utility model, for the convenience of description, quantifiers such as "one", "two", "multiple", "at least one", or "several" may be used to define technical (structural) features. Among them, the meaning of "multiple" is at least two, that is, it can be two or more; the meanings of "at least one" and "several" are one or one and above corresponding technical features; the quantifier limitations are only for explaining the specific embodiments or the best embodiments. As long as they are not contrary to the overall concept and purpose of the utility model, they should all be included, unless it is clearly stated that implementation must be limited by the said quantifiers or the purpose of the utility model can be achieved only by such limitations.

[0062] In the present utility model, unless otherwise clearly specified and limited, terms such as "installation", "setting", "connection", "fixation", "swivel connection", etc. shall be understood in a broad sense. For example, it can be either that the relative positions of components are relatively fixed, or that there is a physically fixed connection between components. It can be either a detachable connection or an integral structure; it can be either a mechanical connection or an electrical signal connection; it can be either directly connected or indirectly connected through an intermediate medium or component; it can be either the communication inside two components or the interaction relationship between two components. Unless otherwise clearly limited in the specification, when other understandings cannot achieve the corresponding functions or effects, for those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0063] If the present utility model involves controllers and control circuits, they are conventional control technologies or units in the art. For example, the control circuit of the controller can be implemented by those of ordinary skill in the art using existing technologies, such as simple programming. For software or programs involved in cooperating with hardware to achieve control results, if the description does not provide detailed explanations indicating the control processes of the software or programs involved, they belong to the use of existing technologies or the conventional technologies of those of ordinary skill in the art. The power supply also belongs to the existing technologies in the art. And since the main technical points of the present utility model lie in the improvement of mechanical devices, the specific circuit control relationships and circuit connections of the present utility model will not be elaborated in detail.

[0064] The preferred embodiments of the present utility model will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only for the purpose of illustrating and explaining the present utility model and are not used to limit the present utility model. The present utility model will be further described below with specific embodiments, but this is not a limitation of the present utility model.

[0065] The applicant has found that the installation of the water pump built into some existing handheld car-washing machines is relatively complex. For example, in the Chinese utility model patent with the publication number CN218141448U of the applicant, a handheld car-washing machine is disclosed, which includes a body, a water tank clamped to the upper side of the front end of the body, a cleaning head housing frame extending outward from the front end of the body for clamping a wiping roller, and a handle connected to the end of the body; a cleaning mechanism is installed in the cleaning head housing frame, the pump and part of the conveying pipeline in the cleaning liquid conveying mechanism are installed in the body, part of the conveying pipeline in the cleaning liquid conveying mechanism and a section of the pipeline in the cleaning liquid conveying mechanism passing through the wiping roller are installed in the cleaning head housing frame, the control circuit board, battery, and display panel of the handheld car-washing machine are installed in the handle, and power supply or sensor signal transmission power harnesses, signal harnesses, and connectors for the car-washing device are arranged on the body, cleaning head housing frame, and handle.

[0066] The applicant has also found that in some other handheld car-washing machines, the control circuit board, battery, and display panel are installed in the handle, and the water pump is installed in the body. The electrical connection between the control circuit board, battery, display panel, and water pump is too complex, which is not convenient for mass production and the maintenance and replacement of parts by users. For example, in the Chinese utility model patent with the publication number CN218907182U of the applicant, a handheld electric car-washing machine is disclosed, which includes a body, a water tank clamped to the upper side of the front end of the body, a cleaning head housing frame extending outward from the front end of the body for clamping a wiping roller, and a handle connected to the end of the body. The pump and part of the conveying pipeline in the cleaning liquid conveying mechanism are installed in the body, part of the conveying pipeline in the cleaning liquid conveying mechanism and a section of the pipeline in the cleaning liquid conveying mechanism passing through the wiping roller are installed in the cleaning head housing frame. A body car-washing head cover plate is provided on the upper part of the cleaning head housing frame. The control circuit board 6, battery 7, and display panel of the handheld car-washing machine are installed in the handle. A water tank locking mechanism is provided beside the water tank clamped to the upper surface of the body. A handle locking mechanism is provided beside the connection between the body and the handle. The upper surface of the body is covered with a body connection cover plate, which just hides part of the mechanical locking structures of the handle locking mechanism and the water tank locking mechanism inside the body, and only the buttons for triggering the locking mechanism are exposed on the upper surface of the body.

[0067] In summary, the applicant concludes that the installation of the pump built into the existing handheld car-washing machines is relatively complex, and it also requires complicated circuits for supplying power to and controlling the pump, as well as a water circuit for sucking clear water from the water supply system and conveying it to the cleaning roller of the scrubbing device. At the same time, the pump is only a component installed inside the housing frame of the scrubbing device and cannot provide sufficient support for the entire housing frame of the scrubbing device, and it is also easy for the working life of the pump to be shortened due to external vibrations on the housing frame of the scrubbing device.

[0068] Therefore, in order to reduce the difficulty of the internal control circuit of the scrubbing device and the layout of the water pump for sucking and conveying clear water pipelines, in order to improve the anti-vibration ability of the water pump assembly inside the scrubbing device, while also ensuring the space and open area for the water pump to dissipate heat externally, extending the service life of the water pump built into the scrubbing device, and in order to improve the overall structural rigidity of the scrubbing device, the applicant has further developed and made this utility model.

[0069] In a first aspect, the present utility model provides a water pump assembly. As Figures 1 to 10As shown, the water pump assembly 10 is installed in a scrubbing device having a scrubbing head. The water pump assembly 10 includes a housing frame 100, a water pump 400, and an end cap assembly 200. The housing frame 100 includes a front part and a rear part. The rear part of the housing frame 100 is installed with a control board 500 and a water pump 400. The rear part of the housing frame 100 is provided with an upper rear opening 100B and a lower rear opening 100A. The control board 500 is installed in the upper rear opening 100A, and the water pump 400 is installed in the lower rear opening 100B. The front part of the housing frame 100 is provided with a wiring cavity 200A with an opening, and the wiring cavity 200A is used to accommodate one end of a set of spring pins electrically connecting the water pump 400 and the control board 500. The other end of the set of spring pins is electrically connected to a power supply assembly 50 of the scrubbing device. The power supply assembly 50 provides power for the control board 500, the water pump 400, and a drive motor (not shown in the drawings) of the scrubbing head. One end of the housing frame 100 close to the scrubbing head is in an open state, and the other end of the housing frame 100 away from the scrubbing head is a power-taking opening (not shown in the drawings). After installing the control board 500 and the water pump 400, the housing frame 100 is installed on the bottom shell 21 of the scrubbing device. The upper and lower sides of the rear part of the housing frame 100 are hollow, forming an open space, which provides good heat dissipation conditions for the control board 500 and the water pump 400. The end cap assembly 200 includes an end cap 205 and a set of spring pins installed on the end cap 205. The other end of the set of spring pins extends out of the wiring cavity 200A to elastically abut against the output end of the power supply assembly 50. The power-taking opening of the housing frame 100 is detachably and hermetically connected to the end cap 205, surrounding the wiring cavity 200A. The upper and lower sides of the other end of the housing frame 100 are open. The water pump 400 is installed in the lower rear opening 100A of the housing frame 100. The water pump 400 includes a water inlet and outlet end (not shown in the drawings) and a power connection end (not shown in the drawings). The water inlet and outlet end has a water inlet 401 and a water outlet 402, and the power connection end has two wiring electrodes (not shown in the drawings). The water inlet 401 and the water outlet 402 of the water inlet and outlet end of the water pump are connected to the cleaning head of the cleaning device through pipelines, sending the clear water in the water tank assembly 40 to the surface of the cleaning roller 30 of the cleaning head and sucking the sewage after the cleaning roller 30 scrubs the surface to be cleaned back to the water tank assembly 40. The sewage is filtered into clear water in the water tank assembly 40 and then sent to the surface of the cleaning roller 30 again, and so on in a cycle. The end cap 205 is detachably and hermetically connected to the housing frame 100. The end cap 205 takes power from the outside and communicates with the outside through the set of spring pins. The water pump assembly 10 can be installed on the bottom shell 21 of the cleaning device and then the upper shell 22 of the cleaning device can be covered to complete the installation of the water pump assembly 10 in the cleaning device. When the power supply assembly 50 is installed on the scrubbing device, the power supply assembly 50 is electrically connected to the water pump assembly 10.

[0070] Specifically, as Figure 1 、Figure 9 , Figure 10 As shown in Figure 10 , the power connection contacts one and two (not marked in the attached drawings) provided at the power connection end of the water pump 400 can conveniently pass through the cable from the lower rear opening 100A and enter the wiring cavity 200A to be electrically connected to the spring pin group, so that the power supply assembly 50 can provide power for the water pump 400. At the same time, since the upper and lower sides of the rear part of the housing frame 100 are open, the control board 500 can naturally and conveniently utilize the open space to pass through the cable from the upper rear opening 100B and enter the wiring cavity 200A to be electrically connected to the spring pin group, so that the power supply assembly 50 provides power. At the same time, the power connection contacts one and two of the water pump 400 are electrically connected through the cable, so that the control board 500 can control the operation of the water pump 400 on the premise that the power supply assembly 50 provides sufficient power. When the water pump 400 fails, the cables connecting the water pump 400, the control board 500, the wiring cavity 200A and the spring pin group can also be conveniently observed through the open housing frame 100, which is convenient for users to observe whether there is a large current ablation situation in each cable, each electrical connection point and the control board, and is also convenient for directly observing the situation of the control system, which is convenient for maintenance personnel or users to make corresponding maintenance diagnosis and analysis. The open housing frame 100 helps maintenance personnel or users directly remove the assembled components of the water pump 400 and the housing frame 100 when the water pump assembly fails, and directly feel the temperature on the surface of the housing of the water pump 400 by hand, so as to indirectly judge whether the water pump 400 has been working in a high-temperature environment for a long time before the failure, which is convenient for maintenance personnel or users to make corresponding maintenance diagnosis and analysis. The housing of the water pump 400 is usually made of metal material, and a certain hollow space is reserved, which also helps the water pump 400 to dissipate heat to the environment in the way of radiation plus air convection, which is beneficial to extending the service life of the water pump 400.

[0071] In the embodiment of the water pump assembly of the present utility model, the housing frame fixes the water pump in an open manner between the housing frame and the bottom shell of the cleaning device, so that the housing frame and the bottom shell of the cleaning device can play a certain supporting role when stressed, preventing the water pump in operation from being impacted by external forces and extending the service life. At the same time, the H-shaped cross-section structure of the upper and lower openings at the rear of the housing frame, on the one hand, facilitates the electrical connection between the water pump and the control system, and on the other hand, provides sufficient open heat dissipation space for both the water pump and the control system. The open installation space makes it more convenient for the water inlet and outlet of the water pump to be connected to the pipelines for externally extracting and transporting water. The telescopic direction of the spring pin group installed on the end cover of the water pump assembly forms an acute angle with the water inlet and outlet direction of the water pump, which can enable the water pump assembly to stably achieve elastic power supply contact and direct contact for signal transmission with the power supply assembly in the scrubbing device handle, providing sufficient strength support at the corner gathering place of the handle and the fuselage of the entire scrubbing device, which is convenient for users to hold the handle with one hand / or both hands to hold the scrubbing device to clean the surface to be cleaned.

[0072] In one or some alternative embodiments, Figure 4 , Figure 7 , Figure 8 , Figure 9 As shown, a partition 109 is provided at one end of the housing 100 close to the power-taking opening to divide the housing 100 into a front part and a rear part; a wire hole 104 is provided on the partition, and the control board 500 is electrically connected to the spring needle group through a wiring harness (not shown in the drawing) passing through the wire hole 104.

[0073] In one or some alternative embodiments, Figure 3 , Figures 7 to 10 As shown, the longitudinal section of the rear portion of the housing frame 100 is H-shaped, the rear upper opening is used to accommodate the control board 500 , and the rear lower opening 100A is used to accommodate the water pump 400 .

[0074] In one or some alternative embodiments, Figure 3 , Figures 7 to 10 As shown, the end cover 205 seals the opening at the front of the housing 100 to prevent water from entering the wiring chamber 200A through the end cover 205, and also prevents water from directly passing through the gap between the bottom shell 21 and the power supply assembly 50 at the handle of the cleaning device through the front of the housing 100 to reach the rear of the housing 100, thereby preventing water from entering the interior of the cleaning device from affecting the normal operation of the control board 500 and the water pump 400.

[0075] In one or some alternative embodiments, Figure 3 , Figures 7 to 10 As shown, the spring pin group includes a positive electrode spring pin 201, a negative electrode spring pin 202, a communication positive spring pin 203, and a communication negative spring pin 204; the positive electrode spring pin 201 is respectively connected to the positive pole of the output end of the power supply component 50 and the positive power supply of the control board 500; the negative electrode spring pin 202 is respectively connected to the negative pole of the output end of the power supply component 50 and the negative power supply of the control board 500; the communication positive spring pin 203 is respectively connected to the communication positive pin of the output end of the power supply component 50 and the control board 500; the communication negative spring pin 204 is respectively connected to the output end of the power supply component 50 and the communication negative pin of the control board 500.

[0076] The elastic needle assembly can conveniently realize the elastic and reliable electrical connection between the water pump assembly and the power supply assembly of the cleaning device, so that the cleaning device can still maintain the reliable electrical connection between the power supply assembly and the water pump assembly even when it is subjected to external impact, ensuring that the cleaning device will not stop running due to external impact. The elastic needle assembly has sufficient elastic expansion redundancy to ensure that when the water pump assembly of the cleaning device has a relative displacement within a certain value with the power supply assembly (when the relative displacement value is less than the expansion amount of the elastic needle assembly), the power supply assembly and the water pump assembly can maintain a reliable electrical connection.

[0077] In one or some alternative embodiments, as Figures 1 to 5 , Figure 7 , Figure 9 , Figure 10 shown, on both sides of the lower rear opening of the frame 100, fixing ears 102 extend outward respectively, so as to fix the frame 100 on the bottom case 21. The fixing ears 102 are detachably connected to the bottom case 21 of the scrubbing device. When the user needs to maintain the water pump assembly 10, only need to first remove the upper case 22 of the scrubbing device from the bottom case 21 of the scrubbing device, then continue to loosen and remove the screws of the fixing ears 102 on both sides of the water pump assembly 10, and then manually remove the entire water pump assembly 10 from the bottom case 21 of the scrubbing device. The L-shaped hanging ears 102 are arranged on both sides of the lower rear opening of the frame 100, and its own structure has a certain ability to absorb stress and strain. After the water pump 400 and the control board 500 are installed on the frame 100, even if the entire water pump assembly is subjected to a certain external force impact, the L-shaped hanging ears 102 can well absorb the stress and strain generated by the external force impact to ensure the stable operation of the water pump 400 and the control board 500.

[0078] In one or some alternative embodiments, as Figures 1 to 3 , Figure 6 , Figure 9 , Figure 10 shown, a plurality of weight-reducing holes 106 are also provided on both sides of the lower rear opening of the frame 100. The weight-reducing holes contribute to the heat dissipation of the water pump, and the weight-reducing holes also contribute to the more efficient injection molding of other non-hollow parts of the frame 100 during the manufacturing process, which is beneficial to improving the overall rigidity of the entire frame 100 while reducing the total weight.

[0079] In one or some alternative embodiments, as Figure 1 , Figure 5 , Figure 6 , Figure 9 , Figure 10 shown, a plurality of reinforcing ribs 101 extend from the root of the lower rear opening of the frame 100 from top to bottom between the partition 109 and the power connection end of the water pump 400. The height at which the reinforcing ribs 101 extend downward is flush with the outer cylindrical surface of the power connection end of the water pump 400. A gap is left between the reinforcing ribs 101 and the two power connection electrodes of the power connection end of the water pump 400 to facilitate the electrical connection of the two power connection electrodes to the control board 500. The reinforcing ribs 101 can improve the rigidity of the frame 100 in the axial direction of the water pump 400, and can further reduce the weight of the entire frame 100.

[0080] In one or some alternative embodiments, as Figure 1 , Figure 5 ,Figure 6 , Figure 9 , Figure 10 As shown, as required, the shell frame 100 is further provided with reinforcing ribs for increasing the strength and reducing the weight, and reinforcing ribs 105 are extended outward from the two side walls of the rear lower opening of the shell frame 100 near the reinforcing ribs 101, and the ends of the reinforcing ribs 105 and the reinforcing ribs 101 are adapted to the columnar outer surface of the water pump 400, and the extending direction of the reinforcing ribs 105 is consistent with the axial direction of the water pump 400 to protect the water pump 400 from external impact. The reinforcing ribs 105 can increase the overall strength of the part of the shell frame 100 that transitions from the front to the rear, and can also further reduce the weight of the entire shell frame 100.

[0081] In one or some alternative embodiments, Figure 2 , Figure 3 , Figure 7 , Figure 8 As shown, a nut column (not marked in the drawings) is provided in the rear upper opening of the housing 100, and support columns (not marked in the drawings) are provided on the surrounding walls of the rear upper opening. The support columns support the control board 500, and the control board 500 can be fixed in the rear upper opening 100B by screws. The nut column and the support column can provide a good fulcrum for the control board 500 when it is installed in the rear upper opening 100B, and can prevent the control board 500 from shaking arbitrarily in the rear upper opening 100B, which may cause the electrical connection between the control board 500 and the water pump 400 and the spring needle group to fail, and can prevent the components on the control board 500 from failing due to shaking.

[0082] In one or some alternative embodiments, Figure 2 , Figure 3 , Figure 7 , Figure 8 As shown, a step (not shown in the drawing) is provided in the rear upper opening of the housing frame 100 , and the side of the step away from the partition 109 is higher than the side closer to the partition 109 , so that the rear lower opening of the housing frame 100 has more space to accommodate the water pump 400 .

[0083] A step is provided in the rear opening of the frame 100. At the same time, the step also divides the space of the rear lower opening of the frame 100 into two parts with different front and rear volumes. The step makes it more convenient to snap-fit and install the water pump 400 into the space of the rear lower opening of the frame 100. This step can be used to abut and absorb the impact received by the water pump 400 along the axial direction of the water pump, so as to utilize the snap-fit and detachable connection between the entire frame 100 and the bottom shell 21 of the cleaning device to absorb the impact, which is more conducive to extending the service life of the water pump. On the other hand, there is a gap between other parts of the frame 100 and the water pump 400. These two gaps can not only utilize the elastic deformation of the frame 100 and / or the bottom shell 21 to absorb the impact of these external forces when the frame at a specific position is subjected to a large external force, but also transmit a certain amount of force. It can not only increase the strength of the outer shell part of the entire water pump assembly 10, but also prevent the impact of the external force from passing through the frame 100 and the bottom shell 21 to the water pump 400 when the entire water pump assembly 10 is subjected to a large external force impact, avoiding damage to the water pump. At the same time, the open frame 100 also helps the water pump 400 of the water pump assembly 10 to dissipate heat in time when it is running at high speed.

[0084] In this way, there is a gap between other parts of the frame and the water pump, a gap between other parts of the frame and the control board, and a gap between the bottom shell of the cleaning device and a part of the frame. These gaps can not only utilize the elastic deformation of the frame and / or the bottom shell to absorb the impact of these external forces when the frame at a specific position is subjected to a large external force, but also transmit a certain amount of force, and transmit these external force impacts to other components of the cleaning device that cooperate with the water pump assembly. It can not only increase the strength of the outer shell part of the entire water pump assembly, but also prevent the impact of the external force from passing through the frame and the bottom shell to the water pump and the control board when the entire water pump assembly is subjected to a large external force impact, avoiding damage to the water pump and the control board.

[0085] In a specific embodiment, as Figures 1 to 2 、 Figures 8 to 10 shown, the step divides the space of the rear lower opening 100A of the frame 100 into a first space (not marked in the drawing) for accommodating the power connection end and a second space (not marked in the drawing) for fixing the water inlet and outlet ends. The dimensions of the first space in the radial direction are not equal to those of the second space. Since the maximum outer diameter of the power connection end of the water pump 400 is not equal to the maximum outer diameter of the water inlet and outlet ends, this is also conducive to the user conveniently snapping the water pump 400 into the space of the rear lower opening of the frame 100 by using the said step. On the contrary, it also makes the process of the user taking out the water pump 400 from the space of the rear lower opening of the frame 100 more convenient.

[0086] Thus, the step divides the space of the lower rear opening of the housing into a first space for accommodating the power connection terminal and a second space for fixing the water inlet / outlet terminal, which can facilitate the space of the lower rear opening of the housing to adapt to water pumps of various shapes, and improve the efficiency and convenience of installing the water pump into the space of the lower rear opening of the housing.

[0087] In one or some alternative embodiments, as Figures 1 to 3 , Figures 5 to 10 shown, at least one sealing ring clamping groove 108 is provided on the outer side of the peripheral wall of the front part of the housing 100. As Figure 8 shown, the sealing ring clamping groove 108 is used to clamp the sealing ring 108' to achieve the isolation and sealing of the handle part of the bottom shell 21 of the whole scrubbing device when the water pump assembly 10 is installed between the bottom shell 21 and the upper shell 22 of the scrubbing device.

[0088] Thus, for the water pump assembly provided by the present utility model, the housing, the water pump, the control board, and the end cover are installed and combined with each other, which can play a certain supporting role when stressed to prevent the water pump in operation from being impacted by external forces and extend the service life. At the same time, the housing and the end cover also make it more convenient for the water pump to take external power and connect to the control board, and the open housing makes it more convenient for the water pump to connect to the external water extraction and delivery pipelines. The open housing can further realize the quick detachable connection of the water pump and the control board on the housing, further reducing the assembly difficulty of the water pump assembly and improving the convenience for users to maintain the water pump assembly.

[0089] In a specific embodiment, the control system is provided with a positive electrode lead-out point, a negative electrode lead-out point, a first water pump power supply lead-out point, a second water pump power supply lead-out point, a communication positive lead-out point, and a communication negative lead-out point (not marked in the drawings); the positive electrode spring pin 201 is electrically connected to the positive electrode lead-out point, and the negative electrode spring pin 202 is electrically connected to the negative electrode lead-out point; the first power connection contact is electrically connected to the first water pump power supply lead-out point, and the second power connection contact is electrically connected to the second water pump power supply lead-out point; the communication positive spring pin 203 is electrically connected to the communication positive lead-out point, and the communication negative spring pin 204 is electrically connected to the communication negative lead-out point.

[0090] Thus, after the water pump assembly 10 is assembled between the bottom shell 21 and the upper shell 22 of the scrubbing device, the battery assembly 50 in the handle realizes the electrical connection between the water pump 400 in the water pump assembly 10, the control board 500, and other electrical devices of the scrubbing device through the spring pin group on the end cover assembly 200. This electrical connection includes power connection and signal connection.

[0091] In a specific embodiment, as Figures 1 to 2 , Figures 8 to 10As shown, the probe pin group may include at least 4 probe pins, which are respectively a positive electrode probe pin 201, a negative electrode probe pin 202, a communication positive probe pin 203, and a communication negative probe pin 204; the positive electrode probe pin 201 is respectively electrically connected to the positive pole of the output end of the power supply assembly 50 and the positive power supply of the control board 500; the negative electrode probe pin 202 is respectively electrically connected to the negative pole of the output end of the power supply assembly 50 and the negative power supply of the control board 500; the communication positive probe pin 203 is respectively electrically connected to the output end of the power supply assembly 50 and the communication positive pin of the control board 500; the communication negative probe pin 204 is respectively electrically connected to the output end of the power supply assembly 50 and the communication negative pin of the control board 500. Each probe pin of the probe pin group specifically includes a protruding tip, a columnar pin body, and a power connection tail (not marked in the drawing) for welding or crimping a cable. The columnar pin body extends out of the end face of the outer surface of the end cover 205 facing outward. The protruding tip can extend or contract along the axis of the columnar pin body under the elastic force of the elastic member installed in the columnar pin body, and is used to realize electrical connection with the output end of the power supply assembly 50. The extending and contracting direction of the protruding tip is not on the same straight line as the normal line of the end face of the water inlet and outlet ends of the water pump 400.

[0092] In a specific embodiment, further, as Figures 8 to 10 shown, the extending and contracting direction of the probe pin group forms an acute angle with the normal line of the end face of the water inlet and outlet ends of the water pump 400.

[0093] Specifically, as Figure 8 shown, the extending and contracting direction of the probe pin group forms an acute angle with the axis direction of the water pump 400. The end face of the water inlet and outlet ends of the water pump 400 is exactly perpendicular to the axis direction of the water pump 400. Therefore, the extending and contracting direction of the probe pin group forms an acute angle α with the normal line of the end face of the water inlet and outlet ends of the water pump 400. Preferably, the value range of the acute angle α is 5 to 60 degrees. As Figure 3When the acute angle α is 5 degrees, the exposed spring needle group of the end cover 205 of the water pump assembly is only slightly tilted to point to the output end of the power supply assembly 50 of the scrubbing device, and the two are elastically abutted. The power supply assembly 50 is arranged in the gripping handle of the scrubbing device. In this way, the gripping handle of the scrubbing device is just slightly tilted to connect the entire scrubbing device body, and the water pump assembly 10 is just at the connection point where the power supply assembly 50 in the gripping handle and the water tank assembly 40 of the scrubbing device body are connected. The concentrated water pump assembly just provides a stronger connection bearing strength to the gathering point of the entire scrubbing device body. When the acute angle α is 5 degrees, the inclination angle of the handle and the scrubbing device body is just enough for the user to lift the handle slightly to allow the cleaning roller of the scrubbing device to easily and elastically abut on the surface to be cleaned, so that the user can conveniently hold the scrubbing device with one hand or both hands to clean the surface to be cleaned. When the acute angle α is 60 degrees, the handle and the scrubbing device body are like Figure 11 , Figure 12 The turning angle shown is 60 degrees, and the length of the body part is equal to the length of the handle part, so that the user can hold the scrubbing device and slightly lift the handle to allow the cleaning roller of the scrubbing device to easily and elastically abut against the surface to be cleaned, so that the user can conveniently hold the scrubbing device with one hand / or two hands to clean the surface to be cleaned. Since the length of the body part is equal to the length of the handle part, the angle of 60 degrees between the two can allow the water pump assembly at the corner where the two meet to provide sufficient connection strength for the entire scrubbing device, and 60 degrees is an angle that users can generally accept for viewing the corner of daily scrubbing devices, which can make people visually feel that the strength is sufficient, so that users can more assuredly and calmly use the scrubbing device to clean the surface to be cleaned by holding the handle.

[0094] In this way, the contraction direction of the elastic needle assembly and the water inlet and outlet direction of the water pump form an acute angle, which allows the water pump assembly to stably achieve elastic power supply contact with the battery assembly in the handle of the scrubbing device, providing sufficient strength support for the entire scrubbing device at the corner where the handle and the body meet, making it convenient for the user to hold the handle with one hand / or two hands to hold the scrubbing device to clean the surface to be cleaned. Since the other end of the water pump assembly away from the scrubbing head of the scrubbing device is provided with an end cover, the elastic needle assembly exposed from the end cover is close to the output end of the battery assembly in the handle, so that the water inlet and outlet of the water pump are close to the scrubbing head, thereby making the distribution of the water pipeline and the power supply power line more concise, making the overall structure of the scrubbing device compact. At the same time, the water pump assembly is formed with two fixed surfaces at both ends through different components, so that the water pump assembly can play a certain supporting role on the shell frame when subjected to force, thereby extending the service life of the overall structure of the entire scrubbing device.

[0095] It should be noted that the control board 500 can also be arranged outside the water pump assembly 10. The control board 500 can be electrically connected to the water pump assembly 10 through the spring pin group. This application does not specifically limit the way the control board 500 is electrically connected to the power supply assembly 50. The control board 500 can be electrically connected to the power supply assembly 50 through the spring pin group or other means. The technical solution where the control board 500 is arranged outside the water pump assembly 10 is similar to the foregoing solution, and the only difference lies in the specific installation position of the control board 500. Other technical details can refer to the foregoing technical solution and will not be elaborated here one by one.

[0096] The present utility model also provides an embodiment of a scrubbing device.

[0097] Specifically, as Figure 11 、 Figure 12 shown, the scrubbing device includes a handle, a scrubbing head connected to the handle, a water tank assembly 40, and a water pump assembly 10. The water pump assembly 10 transports the clear water in the water tank assembly 40 to the cleaning roller 30 on the scrubbing head. Among them, the water pump assembly 10 includes a housing frame 100, a water pump 400 installed on the housing frame 100, and a control board 500. An end cover 205 is provided at the other end of the housing frame 100 away from the scrubbing head. A spring pin group signal-connected to the control system for controlling the operation of the water pump is provided between the end cover 205 and the housing frame 100.

[0098] Specifically, the scrubbing device includes an upper shell 22. The upper shell 22 is also provided with a water tank locking mechanism 221. The water tank locking mechanism 221 includes an unlocking button 2211, a push rod 2212 clamped with the unlocking button 2211, a locking rod 2214 slidably abutted against the push rod 2212, and a spring 2213 clamped between the locking rod 2214 and the upper shell 22 to drive the locking rod 2214 to move laterally. The water tank locking mechanism 221 can achieve quick fixation of the water tank assembly 40 on the upper shell 22 of the scrubbing device, and further lock / unlock the fixation of the water tank 40 on the upper shell 22 of the scrubbing device. Pressing the unlocking button 2211 can push the locking rod 2214 backward, thereby further releasing the locking state of the water tank assembly 40.

[0099] The embodiment of the scrubbing device of the present utility model reduces the difficulty of arranging the internal control circuit of the scrubbing device and the water pipe for pumping and transporting clear water by the water pump, improves the anti-vibration ability of the water pump assembly inside the scrubbing device, and at the same time ensures the space and open area for the water pump to dissipate heat externally, prolongs the service life of the water pump built in the scrubbing device, and improves the overall structural rigidity of the scrubbing device.

[0100] The above embodiments are only used to illustrate the technical solutions of the present utility model, rather than to limit it; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacement and combination on some structures (technical features) in one or more embodiments, and these modifications, replacements or combinations do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present utility model, unless it is clearly excluded in the embodiments that the structures (technical features) in different embodiments can be replaced or combined, or this replacement or combination is contrary to the overall concept of the utility model.

Claims

1. A water pump assembly is installed in a scrubbing device having a scrubbing head, and the scrubbing head is provided with a driving motor, characterized in that, The water pump assembly includes: A water pump, including a water inlet / outlet end and a power connection end, and the water inlet / outlet end is connected to the scrubbing head through a pipeline; A housing frame, on the rear part of which the water pump is installed, and on the front part of which there is a wiring cavity for accommodating one end of a set of spring pins that electrically connect the water pump and a driving motor, and the other end of the set of spring pins is electrically connected to a power supply component of the scrubbing device, and the power supply component provides power for the water pump and the driving motor; An end cover assembly, including an end cover covering the front part of the housing frame and the set of spring pins installed on the end cover, and the other end of the set of spring pins extends out of the wiring cavity to elastically abut against the output end of the power supply component; the power connection end of the water pump is electrically connected to the set of spring pins; Wherein, the scrubbing device includes an upper shell and a bottom shell, and the upper shell and the bottom shell seal the water pump assembly inside the scrubbing device, and when the power supply component is installed on the scrubbing device, the power supply component is electrically connected to the water pump assembly.

2. The water pump assembly according to claim 1, characterized in that A control board is also installed on the rear part of the housing frame, and the control board is electrically connected to the water pump, the driving motor, and the set of spring pins, and the control board controls the water pump and the driving motor to work cooperatively.

3. The water pump assembly according to claim 2, wherein There is an opening on the front part of the housing frame, and the end cover is hermetically covered on the opening to form the wiring cavity, so as to prevent water from passing through the end cover into the wiring cavity and also prevent water from directly passing through the front part of the housing frame to reach the rear part of the housing frame.

4. The water pump assembly according to claim 3, wherein, One end of the housing frame close to the opening is provided with a partition board that divides the housing frame into a front part and a rear part, and a wire passing hole is provided on the partition board, and the control board is electrically connected to the set of spring pins through a wire harness passing through the wire passing hole.

5. The water pump assembly according to claim 4, characterized in that, The rear part is open at the top and bottom and has an H-shaped cross section. The upper opening of the rear part is used to accommodate the control board, and the lower opening of the rear part is used to accommodate the water pump.

6. The water pump assembly according to claim 5, wherein, The set of spring pins includes: Positive electrode spring pins, which are respectively electrically connected to the positive pole of the output end and the positive power of the control board; Negative electrode spring pins, which are respectively electrically connected to the negative pole of the output end and the negative power of the control board; Communication positive spring pins, which are respectively electrically connected to the output end and the communication positive pin of the control board; Communication negative spring pins, which are respectively electrically connected to the output end and the communication negative pin of the control board.

7. The water pump assembly according to claim 5, characterized in that, Fixing ears extend outwards respectively from the two side walls of the lower opening of the rear part of the housing frame, so as to fix the housing frame on the bottom shell.

8. The water pump assembly according to claim 5, characterized in that, A plurality of weight-reducing holes are also provided on the two side walls of the lower opening of the rear part of the housing frame, and the weight-reducing holes contribute to the heat dissipation of the water pump.

9. The water pump assembly according to any one of claims 7 or 8, characterized in that A plurality of reinforcing ribs extend from the root of the lower opening of the rear part of the housing frame downwards between the partition board and the power connection end of the water pump. The height of the downward extension of the reinforcing ribs is flush with the outer cylindrical surface of the power connection end of the water pump, and a gap is left between the reinforcing ribs and the two power connection electrodes of the power connection end of the water pump to facilitate the electrical connection of the two power connection electrodes to the control board.

10. The water pump assembly according to claim 9, characterized in that, Reinforcing ribs extend outwards from the areas of the two side walls of the lower opening of the rear part of the housing frame close to the reinforcing ribs. The ends of the reinforcing ribs and the reinforcing ribs are adapted to the cylindrical outer surface of the water pump to protect the outer surface of the water pump from external impacts.

11. The water pump assembly according to claim 5, wherein, Nut columns are provided inside the upper opening of the rear part, and support columns are provided on the peripheral walls of the upper opening of the rear part. The support columns support the control board, and the control board can be fixed inside the upper opening of the rear part with screws.

12. The water pump assembly according to claim 11, wherein, The upper opening at the rear is provided with a step, and the side of the step away from the front part is higher than the side closer to the front part, so as to provide more space for the lower opening at the rear to accommodate the water pump.

13. The water pump assembly according to claim 5, wherein The telescopic direction of the spring pin group is not in the same straight line as the water inlet and outlet direction of the water pump.

14. The water pump assembly according to claim 13, wherein, The telescopic direction of the spring pin group forms an acute angle with the water inlet and outlet direction of the water pump.

15. A scrubbing device, characterized in that, It includes a handle, a scrubbing head connected to the handle, a water tank, and a water pump assembly as described in any one of claims 1-14. The water pump assembly conveys the clear water in the water tank to the cleaning roller on the scrubbing head.

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