Water supply device for a vehicle cleaning tool

Abstract

The application discloses a water supply device suitable for a vehicle cleaning tool, which comprises a water tank, a filter assembly and a pressure relief assembly. The water tank is provided with an automatic closing clean water output assembly and a sewage access assembly. The clean water output assembly and the sewage access assembly each comprise a water inlet and outlet thimble provided with a through hole and a water inlet and outlet interface end connector sleeved on the water inlet and outlet thimble. The water inlet and outlet interface end connector is an integrated interface end connector. The clean water output assembly and the sewage access assembly cannot move in the plane defined by the end face of the interface end connector. The filter assembly is arranged in the water tank and connected with the sewage access assembly. The pressure relief assembly is communicated with the inside and outside of the water tank. Since the water tank is provided with the filter assembly, the recovered sewage can be filtered and reused, the utilization efficiency of water in the water tank can be improved, the cleaning time is prolonged, and the pressure increase of the water tank in the sewage utilization process can be released through the pressure relief assembly.

Description

[0001] This application is a divisional application of Chinese Patent Application No. 202211255592.2 entitled "A Water Supply Device for Vehicle Cleaning Tools", the contents of which are incorporated herein by reference. Technical Field

[0002] This invention relates to the field of vehicle cleaning technology, and more particularly to a water supply device suitable for vehicle cleaning tools. Background Technology

[0003] Vehicles require regular washing; otherwise, dust easily accumulates on their surfaces, affecting their appearance. Currently, vehicles are cleaned in two ways: one is through professional car detailing shops, and the other is by the user using specialized tools. The former has drawbacks: it requires moving the vehicle to a detailing shop, takes a long time, is expensive, and uses a lot of water, which is not environmentally friendly. The latter, while cheaper, uses a significant amount of water, leading to waste, and is also more labor-intensive and prone to incomplete cleaning, failing to achieve the desired results.

[0004] Therefore, a method has emerged that can clean cleaning tools online during vehicle washing, keeping the tools clean, saving water, and improving washing results. However, online cleaning tools require clean water tanks and wastewater tanks. When arranged independently, the water tanks take up a large volume, and the complex piping connections increase the weight of the cleaning tools, causing inconvenience for users. Summary of the Invention

[0005] The main technical problem solved by this invention is to provide a water supply device suitable for a vehicle cleaning tool. This water supply device can avoid wear and tear and requires complete replacement, thus reducing the cost of use.

[0006] To solve the above-mentioned technical problems, the present invention provides a water supply device suitable for vehicle cleaning tools, comprising:

[0007] The water tank is equipped with an automatically closing clean water output component and a wastewater inlet component. Each of the clean water output component and the wastewater inlet component includes an inlet / outlet pin with a through hole and an inlet / outlet interface connector sleeved on the inlet / outlet pin. The inlet / outlet interface connector is an integrated interface connector. The clean water output component and the wastewater inlet component cannot move within the plane defined by the end face of the interface connector.

[0008] The filter assembly is installed inside the water tank and connected to the wastewater inlet assembly;

[0009] The pressure relief assembly connects the inside and outside of the water tank.

[0010] In one or more alternative embodiments, the inlet / outlet water ejector pin is fitted with an inlet / outlet water compression spring that causes the inlet / outlet water ejector pin to extend.

[0011] In one or more alternative embodiments, the water inlet / outlet pin includes an ejector portion that mates with the water inlet / outlet port on the water inlet / outlet interface connector and a limiting portion that restricts the movement position. A sealing ring is provided between the ejector portion and the water inlet / outlet port. When the water inlet / outlet pin is pressed and moved, the through hole communicates with the water inlet / outlet port.

[0012] In one or more alternative embodiments, the inlet / outlet interface terminal is provided with two inlet / outlet cavities communicating with the water tank, and the two inlet / outlet cavities can form two inlet / outlet channels with the inlet / outlet through through holes.

[0013] In one or more alternative embodiments, the two inlet and outlet water cavities are set independently of each other, and the two inlet and outlet water channels are set independently of each other.

[0014] In one or more alternative embodiments, the clean water output component includes a water outlet pin with a through hole and a water outlet interface connector sleeved on the water outlet pin, and the wastewater inlet component includes a water return pin with a through hole and a water return interface connector sleeved on the water return pin.

[0015] In one or more alternative embodiments, the water outlet pin is fitted with a water outlet pressure spring that causes the water outlet pin structure to tend to extend.

[0016] In one or more alternative embodiments, the water outlet pin includes an ejector portion that mates with a clean water outlet on the water outlet interface end piece and a water outlet limiting portion that restricts the movement position, and a water outlet sealing ring is provided between the ejector portion and the clean water outlet.

[0017] In one or more optional embodiments, when the water outlet pin is pressed and moved, the through hole of the water outlet pin is connected to the clean water outlet, and the water outlet interface end piece is provided with a water outlet cavity connected to the water tank. The water outlet cavity can form a water outlet channel with the clean water outlet through the through hole.

[0018] In one or more alternative embodiments, a return water pressure spring is fitted onto the return water ejector pin to cause the return water ejector pin structure to extend.

[0019] In one or more alternative embodiments, the return water ejector pin includes an ejector portion that mates with a return water inlet on the return water interface connector and a return water limiting portion that restricts the movement position, and a return water sealing ring is provided between the ejector portion and the return water inlet.

[0020] In one or more optional embodiments, when the return water pin is pressed and moved, the through hole of the return water pin is connected to the return water inlet, and the return water interface end piece is provided with a return water cavity connected to the water tank. The return water cavity can form a return water channel with the return water inlet through the through hole.

[0021] In one or more alternative embodiments, the water outlet terminal and the water return terminal are an integral structure;

[0022] With the combined action of the top pressure spring, water outlet pin, water return pin, and interface connector, users only need to align the corresponding interface and apply slight force to complete the connection of the relevant interfaces.

[0023] In one or more alternative embodiments, the interface termination is an interface termination comprising two independent parts.

[0024] In one or more alternative embodiments, the water tank is provided with a water inlet at one end, and the bottom of the water tank is designed as a slope, which helps to facilitate the hand-clamping of the gap between the slope and the car wash device body after the snap-fit ​​tongue is retracted. The filter assembly converts the recovered liquid into cleaning fluid.

[0025] In one or more alternative embodiments, the water interface further includes a water interface bottom shell facing the internal accommodating space of the water tank, and an interface connector facing the external space of the water tank. The clean water output component and the wastewater inlet component are confined within the space enclosed by the interface connector and the water interface bottom shell, and the openings of the clean water output component and the wastewater inlet component correspond to the openings of the interface connector and the water interface bottom shell.

[0026] In one or more alternative embodiments, the end of the filter assembly away from the water inlet extends to a slope near the water tank.

[0027] In one or more alternative embodiments, the filtration assembly includes a filter support and a filter screen that cooperates with the filter support to form a cavity, the cavity being connected to a water tank through the filter screen.

[0028] In one or more alternative embodiments, the filter assembly has an opening at only one end, and the cage-shaped filter support has a filter assembly connection port with external threads on the outer surface of the opening end of the filter assembly. The filter support engages with the internal thread of one end of the interface connector of the water interface through the filter assembly connection port, so that the filter assembly can be detachably connected to the water interface.

[0029] In one or more alternative embodiments, the pressure relief assembly includes a pressure relief pipe located inside the water tank and an installation component connected to the pressure relief pipe. The installation component is fixed to a connecting seat on the water tank. The water tank is provided with a one-way pressure relief port, which is located in the area defined by the connecting seat and communicates with the water tank through the pressure relief pipe.

[0030] In one or more alternative embodiments, the connector is located on the side of the water tank away from the inlet / outlet water interface termination.

[0031] In one or more alternative embodiments, the pressure relief pipe is a rigid pressure relief pipe, and a pressure relief vent is provided at the free end of the rigid pressure relief pipe to communicate with the water tank.

[0032] In one or more alternative embodiments, the pressure relief vent is close to the sidewall of the water tank opposite the connector.

[0033] In one or more alternative embodiments, the pressure relief vent is close to the upper wall of the water tank when the vehicle cleaning tool is in normal use, so that the pressure relief vent will always be above the cleaning fluid level in the water tank when the vehicle cleaning tool is not shaken vigorously or pushed or pulled back and forth at high speed.

[0034] In one or more alternative embodiments, a filter screen is provided around the pressure relief vent.

[0035] In one or more alternative embodiments, the top end of the bottom slope of the water tank, opposite to the clean water output component and the wastewater inlet component, is provided with a snap-fit ​​part for easy installation and fixing, and the snap-fit ​​part is provided with a recessed snap-fit ​​groove.

[0036] In one or more alternative embodiments, the water tank includes an upper shell and a lower shell, which are sealed together by an ultrasonic welding layer. The bottom of the lower shell extends upward on one side as a slope, and the top of the slope of the lower shell is provided with a snap-fit ​​part at the end opposite to the water inlet for easy installation and fixing.

[0037] In one or more alternative embodiments, the clean water output component further includes a suction pipe connected to the clean water outlet, which can still stably output water when the clean water output component is tilted upwards, and the inlet of the suction pipe is located at the end of the inlet pipe.

[0038] In one or more optional embodiments, the water inlet pipe has multiple water inlet holes on its side wall, which are distributed along the length and circumference of the entire water inlet pipe, and a certain gap is left between the water inlet, the water inlet holes and the bottom and side walls of the filter assembly.

[0039] In one or more alternative embodiments, the water inlet is provided with an interface for connecting a water suction pipe at one end near the water tank cavity. The water suction pipe extends all the way to the bottom of the filter assembly. The sewage flowing back into the water tank cavity becomes relatively clean water after being filtered by the filter assembly. The clean water is then sucked into the water inlet through the water suction pipe and then transported to the surface of the cleaning roller to scrub the sponge layer through the pipeline.

[0040] In one or more alternative embodiments, the length of the water intake tube is shorter than the length of the filter assembly.

[0041] In one or more alternative embodiments, the return water ejector and the outlet water ejector are respectively provided with fixing grooves for fixing the return water sealing ring and the outlet water sealing ring.

[0042] In one or more alternative embodiments, when the pressure relief vent extends beyond the liquid surface and the suction pipe remains below the liquid surface, the water supply device has the ability to release pressure to the outside of the water supply device and also has the ability to continuously output clean water.

[0043] When the inlet of the suction pipe is above the liquid surface, the outlet of the water circuit interface is below the liquid surface and is only a very small bypass branch of the water outlet channel. The bypass branch of the outlet can release water outward under the pressure of the liquid surface.

[0044] In one or more alternative embodiments, the water output component is provided with a water outlet that connects the inside and outside of the water tank, so that water can still be output stably when the water output component is tilted downwards.

[0045] This invention relates to a water supply device for vehicle cleaning tools, comprising a water tank equipped with an automatically closing clean water output component and a wastewater inlet component, a filter component disposed within the water tank and connected to the wastewater inlet component, and a pressure relief component connecting the inside and outside of the water tank. Because the water tank has a filter component, the recovered wastewater can be filtered and reused, improving the water utilization efficiency in the tank and extending the cleaning time. Simultaneously, the pressure relief component releases any pressure buildup in the water tank during wastewater utilization. Furthermore, the water tank has only one return water inlet and one clean water outlet, reducing the difficulty of tank design and manufacturing.

[0046] A clean water output component for a water supply device suitable for vehicle cleaning tools includes a water outlet pin with a through hole and a water outlet interface end fitting sleeved on the water outlet pin. A water outlet pressure spring is sleeved on the water outlet pin to make the water outlet structure tend to extend. The water outlet pin includes an ejector part that cooperates with the clean water outlet on the water outlet interface end fitting and a water outlet limiting part that restricts the movement position. A water outlet sealing ring is provided between the ejector part and the clean water outlet. When the water outlet pin is pushed and moved, the through hole communicates with the clean water outlet. The wastewater inlet assembly includes a return water pin with a through hole and a return water interface connector sleeved on the return water pin. A return water pressure spring is sleeved on the return water pin to extend the outlet structure. The return water pin includes an outlet portion that mates with the return water inlet on the return water interface connector and a return water limiting portion that restricts movement. A return water sealing ring is provided between the outlet portion and the return water inlet. When the outlet pin is pressed and moved, the through hole connects to the return water inlet. The automatically closing clean water output assembly and wastewater inlet assembly make connecting the water supply device and vehicle cleaning tools more convenient. With the combined action of the pressure spring, water pin, return water pin, and interface connector, the user only needs to align the corresponding interface and apply slight force to complete the connection without needing to check for leaks at the connection point.

[0047] A pressure relief assembly for a water supply device suitable for vehicle cleaning tools includes a pressure relief pipe located within a water tank and a mounting bracket connected to the pressure relief pipe. The mounting bracket is fixed to a connector on the water tank. The water tank has a one-way pressure relief port located within an area defined by the connector and communicating with the water tank via the pressure relief pipe. The connector is located on the side of the water tank away from the water inlet and at the lowest point of the water tank during normal use of the vehicle cleaning tool. The pressure relief pipe is a rigid pressure relief pipe with a pressure relief vent at its free end communicating with the water tank. The pressure relief vent is close to the side wall of the water tank opposite the connector (the upper wall of the water tank during normal use of the vehicle cleaning tool). A filter screen is provided at least around the pressure relief vent. With proper arrangement, utilizing the small pores of the filter screen and the surface tension of water, a water film can be formed on the surface of the filter screen, effectively preventing liquid from entering. Simultaneously, because the water film formed on the surface of the filter screen cannot withstand pressure when pressure is present, the pressure is easily released through the water film. The pressure relief vent is positioned close to the upper wall of the water tank when the vehicle cleaning tool is in normal use. This ensures that the pressure relief vent will always be above the cleaning fluid level in the water tank unless the vehicle cleaning tool is shaken vigorously or pushed or pulled back and forth at high speed. This ensures that the pressure relief assembly can effectively regulate the air pressure inside the water tank under the current conditions.

[0048] A water supply device suitable for vehicle cleaning tools features a water tank with a sloping bottom. The top of the sloping bottom of the water tank, opposite the clean water output component and the wastewater inlet component, has a snap-fit ​​part for easy installation and fixing. This snap-fit ​​part has a recessed snap-fit ​​groove. The sloping bottom of the water tank facilitates observation of any obstructions during the installation of the entire circulating cleaning container. It also prevents the circulating cleaning container from being too deep during removal, thus avoiding interference with the corresponding snap-fit ​​tongue. The sloping bottom also makes it easier to manually pry open the gap between the sloping bottom and the car wash device body after the snap-fit ​​tongue retracts, making the removal of the entire circulating cleaning container more convenient.

[0049] A clean water output component for a water supply device suitable for vehicle cleaning tools includes a suction pipe connected to a clean water outlet, ensuring stable water output even when the clean water output component is tilted upwards. The clean water output component also has an outlet connecting the inside and outside of a water tank, ensuring stable water output even when the clean water output component is tilted downwards. Attached Figure Description

[0050] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the description only show some embodiments of the present invention, and therefore should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0051] Figure 1 This is a perspective view of a water tank structure according to an embodiment of the present invention.

[0052] Figure 2 The left figure shows the structure of a water tank according to an embodiment of the present invention.

[0053] Figure 3 for Figure 2 Planar view from direction A.

[0054] Figure 4 This is a front view of a water tank placed horizontally according to an embodiment of the present invention.

[0055] Figure 5 for Figure 4 Planar view from direction B.

[0056] Figure 6 for Figure 5 A magnified view of a section at point C.

[0057] Figure 7 This is a schematic diagram of the working state of the water tank tail at its highest point according to an embodiment of the present invention.

[0058] Figure 8 This is a schematic diagram of the working state of the water tank water circuit interface at the highest point according to an embodiment of the present invention.

[0059] Figure label:

[0060] Water interface 10, water outlet interface connector 101, clean water output component 102, sewage inlet component 103, water interface bottom shell 104, water outlet hole 1041, water suction pipe 106;

[0061] Water tank 20, snap-fit ​​part 201, snap-fit ​​groove 202, one-way pressure relief port 203, connecting seat 204;

[0062] Pressure relief assembly 30, pressure relief assembly mounting part 301, pressure relief pipe 302, pressure relief vent 3021;

[0063] Filter assembly 40, filter assembly connection port 401, filter bracket 402;

[0064] Water outlet pin 1021, water outlet sealing ring 1022, water outlet limiting part 1023, water outlet channel 1024, water outlet pressure spring 1025;

[0065] Return water ejector pin 1031, return water sealing ring 1032, return water limiting part 1023, return water channel 1034, return water pressure spring 1035;

[0066] Liquid level line H;

[0067] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0068] The claims of the present invention will be further described in detail below with reference to specific embodiments and accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are also within the scope of protection of the present invention.

[0069] It should be understood that, in the description of the embodiments of the present invention, all directional indicating terms, such as "up," "down," "left," "right," "front," and "back," indicate the orientation or positional relationship based on the orientation and positional relationship shown in the accompanying drawings or the orientation or positional relationship commonly used when the product is in use. These terms are merely for the purpose of simplifying the description of the present invention and do not explicitly or implicitly suggest that the device, element, or component referred to must have a specific orientation or specific orientational structure, and should not be construed as a limitation of the present invention. They are only used to explain the relative positional relationships and movements between the components shown in the accompanying drawings. When this specific orientation changes, the directional indication may also change accordingly.

[0070] Furthermore, in this invention, ordinal numbers such as "first" and "second" are used for distinguishing purposes only and should not be construed as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Thus, the features referred to as "first" and "second" may explicitly or implicitly include at least one of those technical features. In the description of this invention, "a plurality of" means at least two, i.e., two or more, unless otherwise explicitly defined; "at least one" means one or more.

[0071] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "setting," "connection," "fixing," and "screw-in" should be interpreted broadly. For example, they can refer to a relatively fixed positional relationship between components, or a physically fixed connection between components; they can be detachable connections or integral structures; they can be mechanical connections or electrical signal connections; they can be direct connections or indirect connections through intermediate media or components; they can refer to the internal communication of two elements or the interaction between two elements. Unless otherwise explicitly limited in the specification, other interpretations will not achieve the corresponding functions or effects. For those skilled in the art, the specific meaning of the above terms in this invention can be understood according to the specific circumstances.

[0072] If the controllers or control circuits involved in this invention are conventional control technologies or units for those skilled in the art, such as the control circuits of the controllers, they can be implemented by those skilled in the art using existing methods, such as simple programming. Regarding software or programs that work with hardware to achieve control results, unless the description provides a detailed explanation of the control process of the software or programs involved, this pertains to the use of existing technology or conventional techniques for those skilled in the art. The power supply also employs existing technology in the art. Furthermore, since the main inventive aspect of this invention lies in the improvement of the mechanical device, this invention will not provide a detailed explanation of the specific circuit control relationships and circuit connections.

[0073] This invention discloses many different embodiments or examples for implementing different structures of the invention. To simplify the disclosure, specific examples of components and arrangements are described herein. These are merely examples and are not intended to limit the invention. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this invention, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0074] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0075] like Figures 1-8 As shown, the present invention provides an embodiment of a water supply device suitable for vehicle cleaning tools.

[0076] Specifically, such as Figure 1 , Figure 3 , Figure 4 As shown, the water supply device for vehicle cleaning tools includes a water tank 20 with an automatically closing clean water output component 102 and a wastewater inlet component 103, a filter component 40 disposed inside the water tank and connected to the wastewater inlet component, and a pressure relief component 30 connecting the inside and outside of the water tank.

[0077] like Figure 1 , Figure 3 , Figure 5As shown, the water interface 10 includes an interface connector 101, an automatically closing clean water output component 102, an automatically closing wastewater inlet component 103, and a water interface bottom shell 104. The water interface bottom shell 104 faces the internal accommodating space of the water tank 20, and the interface connector 101 faces the external space of the water tank 20. The clean water output component 102 and the wastewater inlet component 103 are confined within the space enclosed by the interface connector 101 and the water interface bottom shell 104. The openings of the clean water output component (not shown in the figure) and the wastewater inlet component (not shown in the figure) correspond to the openings of the interface connector (not shown in the figure) and the water interface bottom shell (not shown in the figure). The clean water output component 102 and the wastewater inlet component 103 cannot move within the plane defined by the end face of the interface connector 101.

[0078] Specifically, such as Figure 5 , Figure 6 As shown, the clean water output assembly 102 includes a water outlet pin 1021 with a through hole and a water outlet interface connector sleeved on the water outlet pin. A water outlet pressure spring 1025 is sleeved on the water outlet pin to keep the water outlet structure in an extended position. The water outlet pin includes an ejector portion (not shown in the figure) that mates with the clean water outlet (not shown) on the water outlet interface connector and a water outlet limiting portion 1023 that restricts its movement. A water outlet sealing ring 1022 is provided between the ejector portion and the clean water outlet. When the water outlet pin is pressed and moved, the through hole communicates with the clean water outlet. The water outlet interface connector has a water outlet cavity (not shown in the figure) that communicates with the water tank. This water outlet cavity can form a water outlet channel 1024 with the clean water outlet through the through hole.

[0079] Specifically, such as Figure 5 , Figure 6 As shown, the sewage inlet assembly 103 includes a return water pin 1031 with a through hole and a return water interface connector 101 sleeved on the return water pin. A return water pressure spring 1035 is sleeved on the return water pin to extend the outlet structure. The return water pin includes an ejector part (not shown in the figure) that mates with the return water inlet (not shown) on the return water interface connector and a return water limiting part 1033 that restricts its movement. A return water sealing ring 1032 is provided between the ejector part and the return water inlet. When the return water pin is pushed and moved, the through hole communicates with the return water inlet. The return water interface connector has a return water cavity (not shown in the figure) communicating with the water tank. This return water cavity can form a return water channel 1034 with the return water inlet through the through hole.

[0080] As needed, such as Figure 1 , Figure 3 , Figure 5 , Figure 6As shown, the outlet water interface connector and the return water interface connector can be an integrated structure, specifically an interface connector 101 comprising two independent parts, with the return water cavity and the outlet water cavity being independently configured. This eliminates the need for the complex sealing structure required between the independent and mutually sealed outlet water interface connector and the return water interface connector, further reducing the manufacturing cost of the outlet water interface connector and the return water interface connector, and also further reducing the complexity of assembling the water supply tank device, improving production convenience and efficiency.

[0081] The automatic closing of the clean water output component and the wastewater inlet component makes it easier to connect the water supply device and the vehicle cleaning tool. With the combined action of the top pressure spring, water jack, return water jack, and interface connector, the user only needs to align the corresponding interface and apply a little force to connect the relevant interfaces without having to worry about whether the connection is tight or whether there is a risk of leakage.

[0082] As needed, such as Figure 3 , Figure 5 As shown, the water supply device for vehicle cleaning tools also includes a filter assembly 40 that converts the recovered liquid into a cleaning fluid. One end of the filter assembly 40, away from the water inlet 10, extends to an inclined surface near the water tank 20, thus increasing the surface area of ​​the filter assembly 40 and improving its filtration capacity and anti-clogging ability. The filter assembly 40 includes a filter support 402 and a filter screen (not shown) covering the surface of the cage-like filter support 402, forming a relatively independent space. This independent space is connected to the water tank through the filter screen. The filter screen has filter holes (not shown in the figure). The filter assembly 40 has an opening at only one end. The cage-like filter support 402 has a filter assembly connection port 401 with external threads on the outer surface of the opening end of the filter assembly 402. The cage-like filter support 402 engages with the internal thread of one end of the interface connector 101 of the water inlet 10 through the filter assembly connection port 401, thereby achieving a detachable connection of the filter assembly 40 to the water inlet 10. The filter assembly 40 and the water inlet 10 are detachably connected by a thread, which improves the ease of maintenance of the filter assembly and prevents the filter assembly 40 from detaching from the water inlet 10 when the vehicle cleaning tool is shaken vigorously or pulled back and forth at high speed, which is possible with a simple snap-fit ​​connection. Once the filter assembly 40 detaches from the water inlet 10, sewage will bypass the filter assembly and re-enter the water outlet channel 1024. As the usage time increases, the risk of the water flow pipe becoming blocked increases.

[0083] Specifically, such as Figure 1 , Figure 3As shown, the pressure relief assembly 30 includes a pressure relief pipe 302 located inside the water tank and a mounting component 301 connected to the pressure relief pipe. The mounting component is fixed to a connecting seat 204 on the water tank. Within the area defined by the connecting seat 204, the water tank has a one-way pressure relief port 203, which communicates with the water tank via the pressure relief pipe. Figure 3 As shown, the pressure relief pipe is a rigid pressure relief pipe, with a pressure relief vent 3021 communicating with the water tank at its free end. The pressure relief vent 3021 is close to the side wall of the water tank opposite the connecting seat. A filter screen (not shown in the attached diagram) is provided at least around the pressure relief vent. With proper arrangement, utilizing the small pores of the filter screen and the surface tension of water, a water film can be formed on the surface of the filter screen, effectively preventing liquid from entering. Simultaneously, because the water film formed on the surface of the filter screen cannot withstand pressure when pressure is present, the pressure is easily released through the water film. The pressure relief vent is close to the upper wall of the water tank during normal use of the vehicle cleaning tool, ensuring that the pressure relief vent exceeds the level of the cleaning fluid in the water tank unless the vehicle cleaning tool is shaken vigorously or pushed or pulled back and forth at high speed. This ensures that the pressure relief assembly can effectively regulate the air pressure inside the water tank under the current conditions.

[0084] Specifically, such as Figure 2 , Figure 3 As shown, the bottom of the water tank is set as a slope, and the top end of the slope of the bottom of the water tank is provided with a concave snap-fit ​​part 201 for easy installation and fixing on the side opposite to the water interface 10. The snap-fit ​​part is further provided with a snap-fit ​​groove 202 that is further concave.

[0085] As needed, the water tank includes an upper shell (not shown in the figure) and a lower shell (not shown in the figure). The upper shell and the lower shell are sealed together by an ultrasonic welding layer (not shown in the figure). The bottom of the lower shell extends upward on one side, which is a slope. The top of the slope of the lower shell is provided with a snap-fit ​​part 201 that facilitates installation and fixing on the side opposite to the water interface 10. The snap-fit ​​part is provided with a concave snap-fit ​​groove 202.

[0086] Specifically, such as Figure 5 , Figure 7 , Figure 8 As shown, the water inlet 10 has an interface for connecting to a suction pipe 106 (not shown in the attached diagram) at one end near the water tank cavity. The suction pipe 106 extends all the way to the bottom of the filter assembly 40. Wastewater flowing back into the water tank 20 is filtered by the filter assembly 40 and becomes relatively cleaner water. This clean water is then drawn into the water inlet 10 through the suction pipe 106 and transported through a pipeline to the surface of the cleaning roller to scrub the sponge layer (not shown in the attached diagram). The length of the suction pipe 106 should not be too short; otherwise, the water supply device will tilt upwards (e.g., ...). Figure 8(As shown) and when the liquid level H is too low, the suction pipe 106 cannot draw in clean water. The length of the suction pipe 106 is kept slightly shorter than the length of the filter assembly 40. This ensures that the inlet pipe can smoothly draw in water when the water supply device is tilted upwards and the liquid level is too low. The inlet of the suction pipe 106 (not shown in the attached figure) is located at the end of the inlet pipe. Furthermore, multiple inlet holes (not shown in the attached figure) are provided on the side wall of the inlet pipe. These multiple inlet holes are distributed throughout the length and circumference of the entire inlet pipe. A certain gap is left between the inlet, the inlet holes, and the bottom and side walls of the filter assembly 40 to ensure that the filter assembly 40 not only relies on the filtering effect of the filter screen but also leaves a certain space for the filtered clean water to have a certain gradual change in flow rate, avoiding the accumulation of impurities around the inlet and inlet holes. The advantage of multiple inlet holes distributed throughout the length and circumference of the entire inlet pipe is that regardless of whether the water supply device is tilted upwards (as shown in the attached figure), the inlet pipe can draw in clean water smoothly when the liquid level H is too low. Figure 8 (as shown) or tilted downwards (as shown) Figure 7 As shown in the diagram, the water inlet and / or water inlet hole can draw in enough clean water so that the car wash device equipped with the water supply device can work properly.

[0087] Specifically, such as Figure 7 As shown, when the clean water output component of the water supply device is tilted downwards, the connecting seat 204 is located on the side of the water tank away from the clean water output component 102. The mounting part 301, which is connected to the pressure relief pipe 302, is installed on the connecting seat 204 on the water tank. The area defined by the connecting seat 204 is provided with a one-way pressure relief port 203 of the water tank. This one-way pressure relief port is connected to the water tank through a pressure relief pipe, which is made of rigid material. Since the connecting seat 204 is located on the side of the water tank away from the clean water output component, the pressure relief vent 3021 at the free end of the rigid pressure relief pipe, which is connected to the water tank, naturally approaches the side wall of the water tank opposite the connecting seat (the upper wall of the water tank when the vehicle cleaning tool is in normal use). At this time, the pressure relief vent 3021 exceeds the liquid level H, and when the suction pipe 106 is always below the liquid level H, the water supply device naturally has the ability to release pressure to the outside of the water supply device and also has the ability to continuously output clean water. When the inlet of the suction pipe 106 is above the liquid surface H, the outlet hole 1041 of the water interface 10 is below the liquid surface H and is only a very small bypass branch of the outlet channel 1024. Under the pressure of the liquid surface H, this bypass branch of the outlet hole 1041 can achieve the function of "releasing water outwards." At this time, the pressure relief passage of the pressure relief vent 3021, which is connected to the outside atmosphere, has the ability to release pressure outside the water supply device. Simultaneously, due to the pressure difference inside and outside the water supply device, the water supply device of the car wash device used in this configuration has the ability to release pressure outside the water supply device.

[0088] Specifically, such as Figure 8As shown, when the clean water output component of the water supply device is tilted upwards, the connecting seat 204 is located on the side of the water tank away from the clean water output component 102. The mounting part 301 connected to the pressure relief pipe 302 is installed on the connecting seat 204 on the water tank. The area defined by the connecting seat 204 is provided with a one-way pressure relief port 203 of the water tank. The one-way pressure relief port is connected to the water tank through the pressure relief pipe, which is made of rigid material. Since the connecting seat 204 is located on the side of the water tank away from the clean water output component, the pressure relief vent 3021 at the free end of the rigid pressure relief pipe, which communicates with the water tank, naturally approaches the side wall of the water tank opposite the connecting seat (the upper wall of the water tank when the vehicle cleaning tool is in normal use). At this time, the pressure relief vent 3021 is lower than the liquid level H. Under the combined action of water pressure and air pressure, the pressure is applied directly to the one-way pressure relief port 203 of the water tank through the pressure relief vent 3021 and along the pressure relief pipe 302. The one-way pressure relief port 203 can be specifically a one-way valve. Due to the one-way conduction function of the one-way valve, the one-way valve is compressed and closed under the combined action of water pressure and air pressure. The water outlet 1041 of the water interface 10 is higher than the liquid level H and is only a very small bypass branch of the water outlet channel 1024. The water outlet 1041 is open to the outside atmosphere. A detour structure (not shown in the attached diagram) is provided before the water outlet 1041 to block the flow of water to the bypass branch. Simply put, the bypass branch of the water outlet 1041, which is open to the outside atmosphere, can achieve the effect of "breathable but not water-permeable". At this time, the bypass branch of the water outlet 1041, which is open to the outside atmosphere, has the ability to release pressure outside the water supply device. Simultaneously, due to the pressure difference inside and outside the water supply device, and because the suction pipe 106 always has an inlet and / or suction hole below the liquid level H, the clean water output component can continuously output clean water. The water supply device of the car wash device used in this manner has the ability to release pressure outside the water supply device and the ability to continuously output clean water.

[0089] Because the water tank is equipped with a filtration system, the recycled wastewater can be filtered and reused, improving water utilization efficiency and extending cleaning time. A pressure relief system also releases any pressure buildup during wastewater reuse. Furthermore, the water tank has only one return water inlet and one clean water outlet, reducing the complexity of its design and construction.

[0090] As needed, the outlet interface connector and the return interface connector are an integral structure, with the return cavity and the outlet cavity being independently set. To better secure the sealing rings, the return pin and the outlet pin are respectively provided with fixing grooves for securing the return sealing ring and the outlet sealing ring.

[0091] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A water supply device suitable for vehicle cleaning tools, characterized in that, include: The water tank is equipped with an automatically closing clean water output component and a wastewater inlet component. Each of the clean water output component and the wastewater inlet component includes an inlet / outlet pin with a through hole and an inlet / outlet interface connector sleeved on the inlet / outlet pin. The inlet / outlet interface connector is an integrated interface connector. The clean water output component and the wastewater inlet component cannot move within the plane defined by the end face of the interface connector. The filter assembly is installed inside the water tank and connected to the wastewater inlet assembly; The pressure relief assembly connects the inside and outside of the water tank.

2. The water supply device for vehicle cleaning tools as described in claim 1, characterized in that, The inlet / outlet water ejector pin is fitted with an inlet / outlet water compression spring that keeps the inlet / outlet water ejector pin in an extended position.

3. The water supply device for vehicle cleaning tools as described in claim 1, characterized in that, The water inlet / outlet pin includes an ejector part that mates with the water inlet / outlet port on the water inlet / outlet interface end piece and a limiting part that restricts the movement position. A sealing ring is provided between the ejector part and the water inlet / outlet port. When the water inlet / outlet pin is pushed and moved, the through hole communicates with the water inlet / outlet port. Preferably, the inlet and outlet water interface connector is provided with two inlet and outlet water cavities that are connected to the water tank, and the two inlet and outlet water cavities can form two inlet and outlet water channels through the through holes and the inlet and outlet water ports; Preferably, the two inlet and outlet water cavities are set independently, and the two inlet and outlet water channels are set independently. Preferably, the clean water output component includes a water outlet pin with a through hole and a water outlet interface connector sleeved on the water outlet pin, and the wastewater inlet component includes a water return pin with a through hole and a water return interface connector sleeved on the water return pin. Preferably, a water outlet pressure spring is sleeved on the water outlet pin to make the water outlet pin structure tend to extend; Preferably, the water outlet pin includes an ejector part that mates with a clean water outlet on the water outlet interface end connector and a water outlet limiting part that restricts the movement position, and a water outlet sealing ring is provided between the ejector part and the clean water outlet. Preferably, when the water outlet pin is pressed and moved, the through hole of the water outlet pin is connected to the clean water outlet, and the water outlet interface end piece is provided with a water outlet cavity connected to the water tank. The water outlet cavity can form a water outlet channel with the clean water outlet through the through hole. Preferably, a return water pressure spring is sleeved on the return water ejector pin to make the return water ejector pin structure tend to extend; Preferably, the return water ejector pin includes an ejector portion that mates with the return water inlet on the return water interface end piece and a return water limiting portion that restricts the movement position, and a return water sealing ring is provided between the ejector portion and the return water inlet; Preferably, when the return water ejector pin is pushed and moved, the through hole of the return water ejector pin is connected to the return water inlet, and the return water interface end piece is provided with a return water cavity connected to the water tank. The return water cavity can form a return water channel with the return water inlet through the through hole. Preferably, the outlet water interface connector and the return water interface connector are integrated into one structure; With the combined action of the top pressure spring, water outlet pin, water return pin, and interface connector, users only need to align the corresponding interface and apply slight force to complete the connection of the relevant interfaces.

4. The water supply device for vehicle cleaning tools as described in claim 1, characterized in that, An interface terminator is an interface terminator that consists of two independent parts.

5. The water supply device for vehicle cleaning tools as described in claim 1, characterized in that, The water tank has a water inlet at one end and a slope at the bottom, which helps to easily pry open the gap between the slope and the car wash device body by hand after the snap-fit ​​tongue retracts. The filter assembly converts the recovered liquid into cleaning fluid.

6. The water supply device for vehicle cleaning tools as described in claim 5, characterized in that, The water interface also includes a water interface bottom shell, which faces the internal space of the water tank, while the interface terminal faces the external space of the water tank. The clean water output component and the wastewater inlet component are confined within the space enclosed by the interface terminal and the water interface bottom shell. The openings of the clean water output component and the wastewater inlet component correspond to the openings of the interface terminal and the water interface bottom shell.

7. The water supply device for vehicle cleaning tools as described in claim 5, characterized in that, The end of the filter assembly furthest from the water inlet extends to a slope near the water tank; Preferably, the filter assembly includes a filter support and a filter screen that cooperates with the filter support to form a cavity, the cavity being connected to the water tank through the filter screen; Preferably, the filter assembly has an opening at only one end, and the cage-shaped filter support has a filter assembly connection port with external threads on the outer surface of the opening end of the filter assembly. The filter support engages with the internal thread of one end of the interface connector of the water interface through the filter assembly connection port, so that the filter assembly can be detachably connected to the water interface.

8. The water supply device for vehicle cleaning tools as described in claim 3, characterized in that, The pressure relief assembly includes a pressure relief pipe located inside the water tank and an installation component connected to the pressure relief pipe. The installation component is fixed to a connecting seat on the water tank. The water tank is provided with a one-way pressure relief port, which is located in the area defined by the connecting seat and communicates with the water tank through the pressure relief pipe. Preferably, the connector is located on the side of the water tank away from the inlet / outlet water interface connector; Preferably, the pressure relief pipe is a rigid pressure relief pipe, and a pressure relief vent that communicates with the water tank is provided at the free end of the rigid pressure relief pipe; Preferably, the pressure relief vent is close to the side wall of the water tank opposite the connecting seat; Preferably, the pressure relief vent is positioned close to the upper wall of the water tank when the vehicle cleaning tool is in normal use, so that the pressure relief vent will always be above the cleaning fluid level in the water tank unless the vehicle cleaning tool is shaken vigorously or pushed or pulled back and forth at high speed.

9. The water supply device for vehicle cleaning tools as described in claim 8, characterized in that, A filter screen is installed around the pressure relief vent.

10. The water supply device for vehicle cleaning tools as described in claim 1, characterized in that, The top of the sloping bottom of the water tank is provided with a snap-fit ​​part on the side opposite to the clean water output component and the sewage inlet component, which is convenient for installation and fixing. The snap-fit ​​part is provided with a recessed snap-fit ​​groove. Preferably, the water tank includes an upper shell and a lower shell, which are sealed together by an ultrasonic welding layer. The bottom of the lower shell extends upward on one side, which is a slope. The top of the slope of the lower shell, opposite to the water inlet, is provided with a snap-fit ​​part for easy installation and fixing.

11. The water supply device for vehicle cleaning tools as described in claim 8, characterized in that, The clean water output component also includes a suction pipe connected to the clean water outlet. It can still output water stably when the clean water output component is tilted upwards. The inlet of the suction pipe is located at the end of the inlet pipe.

12. The water supply device for vehicle cleaning tools as described in claim 11, characterized in that, Multiple water inlet holes are provided on the side wall of the water inlet pipe. These multiple water inlet holes are distributed along the entire length and circumference of the water inlet pipe. A certain gap is left between the water inlet, the water inlet holes, and the bottom and side walls of the filter assembly. Alternatively, the water inlet is provided with an interface for connecting a suction pipe at one end near the water tank cavity. The suction pipe extends all the way to the bottom of the filter assembly. The sewage flowing back into the water tank cavity becomes relatively clean water after being filtered by the filter assembly. The clean water is then sucked into the water inlet through the suction pipe and then transported to the surface of the cleaning roller to scrub the sponge layer through the pipeline. Alternatively, the length of the suction pipe may be shorter than the length of the filter assembly.

13. The water supply device for vehicle cleaning tools as described in claim 3, characterized in that, The return water ejector and the outlet water ejector are respectively provided with fixing grooves for fixing the return water sealing ring and the outlet water sealing ring.

14. The water supply device for vehicle cleaning tools as described in any one of claims 11-13, characterized in that, When the pressure relief vent is above the liquid surface and the suction pipe is always below the liquid surface, the water supply device has the ability to release pressure to the outside of the water supply device and also has the ability to continuously output clean water. When the inlet of the suction pipe is above the liquid surface, the outlet of the water circuit interface is below the liquid surface and is only a very small bypass branch of the water outlet channel. The bypass branch of the outlet can release water outward under the pressure of the liquid surface.

15. The water supply device for vehicle cleaning tools as described in claim 1, characterized in that, The clean water output component has a water outlet that connects the inside and outside of the water tank, and it can still output water stably when the clean water output component is tilted downwards.

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