A hand-held electric car duster

Abstract

This invention relates to the field of cleaning technology. It discloses a handheld electric car washer, comprising an electric washer head and a body connected to the electric washer head, and a water tank located on the body for supplying water to the electric washer head and collecting wastewater. The water tank includes a tank body with a liquid storage cavity, an inlet / outlet mechanism communicating with the storage cavity, a filter assembly for filtering the liquid returning to the tank body, and a pressure relief mechanism for maintaining pressure balance in the tank. A gap exists between the outer wall of the filter assembly and the inner wall of the tank body. One end of the pressure relief mechanism is connected to the inlet / outlet mechanism and surrounded by the filter assembly. During cleaning, the water tank can release air pressure along with clean water to the outside, effectively reducing the internal pressure. Because the surface area of ​​the filter assembly for filtration is close to the surface area of ​​the inner wall of the tank, the filter assembly will not be completely clogged and is easy to remove for cleaning.

Description

Technical Field

[0001] This invention relates to the field of cleaning technology, and more particularly to a handheld electric car washer. Background Technology

[0002] Continuous scrubbing is usually required during the scrubbing process to achieve higher cleaning efficiency. However, when using a scrubbing roller, the surface of which is usually made of sponge, wastewater is collected after squeezing the roller, and the squeezed-out air is also collected, causing an increase in pressure within the liquid collection chamber. Effectively releasing this pressure becomes a problem that needs to be solved. Summary of the Invention

[0003] The main technical problem solved by this invention is to provide a handheld electric car wash machine that can avoid the increased difficulty of circulating water entering the water tank due to the pressure difference between the inside and outside of the water tank during the cleaning process.

[0004] To solve the above-mentioned technical problems, the present invention provides a handheld electric car washer, including an electric washer head and a body connected to the electric washer head, and a water tank disposed on the body to supply water to the electric washer head and collect wastewater. The water tank includes a water tank body with a liquid storage cavity and a water inlet / outlet mechanism disposed in communication between the water tank body and the storage cavity, a filter assembly for filtering the liquid returning to the water tank body, and a pressure relief mechanism for maintaining the pressure balance of the water tank. The filter assembly is sleeved on the water inlet / outlet mechanism, with a gap between its outer wall and the inner wall of the water tank body, and one end of the pressure relief mechanism is connected to the water inlet / outlet mechanism and surrounded by the filter assembly.

[0005] Furthermore, the pressure relief mechanism includes a pressure relief pipe connected to the water inlet / outlet mechanism. The free end of the pressure relief pipe is provided with a buoyancy component that can adjust the air pressure inside the water tank. The pressure relief pipe has a flexible structure between the water inlet / outlet mechanism and the buoyancy component.

[0006] Furthermore, the buoyancy component includes a buoyancy ball, which can release air pressure to the outside of the water tank body through the pressure relief pipe.

[0007] Furthermore, the buoyancy ball is provided with a branch pipe, one end of which extends from the fixed end where the buoyancy ball and the pressure relief pipe are fixed and the free end is flush with the buoyancy ball. The free end is provided with a first pressure relief port, and there is one or more protrusions next to the first pressure relief port to prevent liquid from being poured into the first pressure relief port.

[0008] Furthermore, the plurality of protrusions detachably secure a filter assembly, which covers the first pressure relief port.

[0009] Furthermore, the water inlet and outlet mechanism includes a mounting base and a fixed base disposed within the mounting base. The fixed base is respectively provided with a clean water output component that forms a clean water output channel when pressed and a sewage inlet component that forms a sewage input channel when pressed.

[0010] Furthermore, the water output assembly includes a water outlet pin structure that engages with a through hole on the fixed base, a pressure spring that causes the water outlet pin structure to extend, and a water outlet limiting component that limits the extension position of the water outlet pin structure. The water outlet limiting component is part of the fixed base. When the water outlet pin structure is pressed and moved, the water outlet pin structure and the through hole form a water output channel.

[0011] Furthermore, the sewage inlet assembly includes a return water venting pin structure that mates with a through hole on the fixed base, a pressure spring that causes the return water venting pin structure to extend, and a return water limiting component that limits the extension position of the return water venting pin structure. The return water limiting component is part of the fixed base. When the return water venting pin structure is pressed and moved, the return water venting pin structure and the through hole form a sewage input channel. The return water venting pin structure is provided with a vent hole and a notch that communicates with the space surrounded by the mounting base and the fixed base.

[0012] Furthermore, the water outlet pin structure includes a body and a water outlet switch component disposed on the body. A flow hole forming part of the clean water output channel is provided between the water outlet switch component and the body. A sealing structure is provided between the water outlet switch component and the water outlet limiting component.

[0013] Furthermore, the return water pin structure includes a body and a return water switch component disposed on the body. A flow hole forming part of the return water input channel is provided between the return water switch component and the body. A sealing structure is provided between the return water switch component and the return water limiting component.

[0014] Furthermore, the sealing structure includes a sealing ring fixed in an annular mounting groove. The sealing ring has a notch, which forms a communication gap with the end of the fixing seat to constitute part of a clean water output channel or a sewage input channel.

[0015] Furthermore, the sealing ring has extensions on both sides in the vertical direction of the diameter and a protrusion in the diametrical direction, the protrusion having a sealing mating surface.

[0016] Furthermore, the sealing mating surface is an inclined plane.

[0017] Furthermore, the mounting base has multiple sewage guide holes on its side wall that can guide the returned sewage to the gap between the outer wall of the filter assembly and the inner wall of the water tank body.

[0018] This invention discloses a handheld electric car washer, comprising an electric washer head and a body connected to the electric washer head, and a water tank disposed on the body for supplying water to the electric washer head and collecting wastewater. The water tank includes a tank body with a liquid storage cavity, an inlet / outlet mechanism communicating with the storage cavity, a filter assembly for filtering the liquid returning to the tank body, and a pressure relief mechanism for maintaining pressure balance in the tank. The filter assembly is sleeved on the inlet / outlet mechanism, with a gap between its outer wall and the inner wall of the tank body. One end of the pressure relief mechanism is connected to the inlet / outlet mechanism and surrounded by the filter assembly. Because the pressure relief mechanism allows some air inside the tank to communicate with the outside through the inlet / outlet mechanism, when pressure arises in the tank during cleaning, air can be transported to the outside along with clean water, effectively reducing the internal pressure of the tank and balancing the pressure inside and outside, preventing pressure increases within the tank. Since the surface area of ​​the filter assembly for filtration is close to the surface area of ​​the inner wall of the tank, the filter assembly will not be completely clogged and is easy to remove for cleaning. Attached Figure Description

[0019] 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.

[0020] Figure 1 This is a schematic diagram of an embodiment of a handheld electric car wiping machine.

[0021] Figure 2 This is a cross-sectional view along the length of an embodiment of a handheld electric car washer.

[0022] Figure 3 This is a schematic diagram of the internal structure of an embodiment of a handheld electric car washer.

[0023] Figure 4 This is a front view of the structure of an embodiment of the water tank device for a handheld electric car wash machine.

[0024] Figure 5 This is a bottom view of an embodiment of the water tank device for a handheld electric car wash machine.

[0025] Figure 6 for Figure 4 Sectional view along the AA direction.

[0026] Figure 7 for Figure 6 Enlarged schematic diagram of part B in the middle section.

[0027] Figure 8for Figure 7 Enlarged schematic diagram of section C.

[0028] Figure 9 This is an exploded structural diagram of an embodiment of the water tank device for a handheld electric car wash machine.

[0029] Figure 10 This is a schematic diagram showing the usage state of the water tank device of a handheld electric car wiper when it contains liquid.

[0030] Figure 11 This is a schematic diagram showing another usage state of the water tank device of a handheld electric car wiper when it contains liquid.

[0031] Figure label:

[0032] 2. Wiping roller; 3. Motor; 6. Control circuit board; 7. Battery; 8. Handle.

[0033] Pump 5, clean water output channel component 56, sewage return water channel component 57;

[0034] 4. Body; 41. Body cleaning head cover; 42. Body connecting cover; 43. Water tank locking mechanism; 45. Handle locking mechanism;

[0035] Water tank 1;

[0036] Water inlet / outlet mechanism 10;

[0037] Fixed base 101, limiting structure 1011,

[0038] Clean water output component 102, inlet / outlet water pin structure 1021, body 10211, inlet / outlet water switch component 10212, flow passage 10213.

[0039] Wastewater inlet component 103, inlet / outlet pin structure 1031, body notch 10311, vent 10312.

[0040] Mounting base 104, vent 1045, water suction pipe interface 1043, pressure relief interface 1047.

[0041] Sealing gasket 105

[0042] 106 water suction pipe

[0043] Top compression spring 107

[0044] Sealing ring 108, first extension 1081, second extension 1082, protrusion 1083, notch 1084;

[0045] Water tank body 20, inclined surface 201, snap-fit ​​groove 202, horizontal step surface 203;

[0046] Pressure relief mechanism 30, pressure relief pipe 301, buoyancy component 302, cavity 3021, fixed end 3022, branch pipe 3023, protrusion 3024, first pressure relief port 3025;

[0047] Filter component 40;

[0048] Liquid level H;

[0049] The realization of the objectives, 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

[0050] 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.

[0051] 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.

[0052] 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.

[0053] 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.

[0054] 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.

[0055] 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.

[0056] 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.

[0057] like Figures 1-8 As shown, the present invention provides an embodiment of a handheld electric car wiping machine.

[0058] The handheld electric car washer includes an electric washer head and a body 4 connected to the electric washer head, as well as a water tank 1 located on the body to supply water to the electric washer head and collect wastewater. The water tank 1 includes a water tank body 20 with a liquid storage cavity and a water inlet / outlet mechanism 10 connected to the storage cavity, a filter assembly 40 for filtering the liquid returning to the water tank body, and a pressure relief mechanism 30 for maintaining the pressure balance of the water tank. The filter assembly 40 is sleeved on the water inlet / outlet mechanism 10, and there is a gap between the outer wall of the filter assembly 40 and the inner wall of the water tank body. One end of the pressure relief mechanism 30 is connected to the water inlet / outlet mechanism and is surrounded by the filter assembly.

[0059] Specifically, such as Figure 1 , Figure 2 As shown, the handheld electric car washer includes a body 4, a water tank 1 that snaps onto the upper front side of the body, a cleaning head housing (not shown in the attached figure) extending outward from the front of the body to snap onto the wiping roller 2, and a handle 8 connected to the end of the body. A pump 5 and part of the delivery pipeline (not shown in the attached figure) in the cleaning fluid delivery mechanism are installed inside the body. Part of the delivery pipeline in the cleaning fluid delivery mechanism, and a section of the pipeline passing through the wiping roller 2, are installed inside the cleaning head housing. A cover is provided on the upper part of the cleaning head housing. The handheld car wash machine has a wash head cover 41. The control circuit board 6, battery 7, and display panel (not shown in the attached diagram) are installed inside the handle 8. A water tank locking mechanism 43 is located next to the water tank 1 on the upper surface of the body 4. A handle locking mechanism 45 is located next to the connection between the body 4 and the handle 8. A body connection cover 42 covers the upper surface of the body 4, concealing the mechanical locking structures of the handle locking mechanism 45 and the water tank locking mechanism 43 within the body, with only the button for triggering the locking mechanism exposed on the upper surface of the body. The body, wash head housing, and handle are all equipped with power harnesses, signal harnesses, and connectors (not shown in the attached diagram) that provide power or sensor signal transmission to the car wash device. Because the water tank 1 adopts a cylindrical shape, it can effectively increase the water tank volume within a specific surface area constraint. Simultaneously, the surface area of ​​the filter assembly 40 is also maximized, preventing complete clogging of the filter assembly and facilitating its removal for cleaning. The transition in outer diameter between the body 4 and the cleaning head is visually abrupt, giving the user the impression of a large water tank capacity and also demonstrating the robustness of the materials used in the body, indicating its mechanical strength to withstand varying degrees of scrubbing intensity from different users. Similarly, the transition in outer diameter between the body 4 and the handle 8 is also visually abrupt, with the body connecting cover 42 highlighting this strong transition on the upper surface of the body, further emphasizing the sturdiness of the materials used and the sufficient mechanical strength of the body.

[0060] Specifically, such as Figure 3As shown, the machine body 4 and the cleaning head housing are also equipped with a water tank outlet pipe (not shown in the attached drawing), a clean water pipe (not shown in the attached drawing), and a sewage pipe (not shown in the attached drawing). The cleaning head housing has a clean water output channel component 56 and a sewage return channel component 57 at both ends. The pump 5 includes a pump outlet (not shown in the attached drawing) and a pump return port (not shown in the attached drawing). One end of the water tank outlet pipe is connected to the clean water output interface (not shown in the attached drawing) of the water tank 1, and the other end is connected to the pump return port. One end of the clean water pipe is connected to the pump outlet, and the other end is connected to the input interface (not shown in the attached drawing) of the clean water output channel component 56. One end of the sewage pipe is connected to the output interface (not shown in the attached drawing) of the sewage return channel component 57, and the other end is connected to the sewage input interface (not shown in the attached drawing) of the water tank 1.

[0061] Specifically, such as Figures 4 to 9 As shown, the water tank 1 includes a water tank body 20 with a liquid storage cavity (not shown in the figure), an inlet / outlet mechanism 10 connected to the storage cavity, a filter assembly 40 for filtering the liquid returning to the water tank body 20, and a pressure relief mechanism 30 for maintaining the pressure balance of the water tank. The filter assembly 40 is sleeved on the inlet / outlet mechanism 10, and there is a gap between the outer wall of the filter assembly (not shown in the figure) and the inner wall of the water tank body (not shown in the figure). One end of the pressure relief mechanism 30 is connected to the inlet / outlet mechanism 10 and the pressure relief mechanism 30 is surrounded by the filter assembly 40.

[0062] Specifically, such as Figure 6 As shown, the pressure relief mechanism 30 includes a pressure relief pipe 301 connected to the water inlet / outlet mechanism 10. The free end of the pressure relief pipe 301 is provided with a buoyancy component 302 that can adjust the air pressure inside the water tank. The pressure relief pipe 301 has a flexible structure (not shown in the figure) between the water outlet pipe and the buoyancy component 302. This flexible structure can ensure that the water tank can float on the liquid surface H under the action of the buoyancy component 302 in any state. The air above the liquid surface H can be connected to the outside of the water tank through the pressure relief pipe 301.

[0063] Specifically, such as Figure 6 , Figure 10 , Figure 11As shown, the buoyancy component 302 can employ a structure including a buoyancy ball. The buoyancy ball can release air pressure to the outside of the water tank body through the pressure relief pipe 301. The buoyancy ball has a branch pipe 3023, one end of which extends from the fixed end 3022 where the buoyancy ball and pressure relief pipe 301 are fixed, and a free end (not shown in the figure) flush with the buoyancy ball. The free end has a first pressure relief port 3025, and one or more protrusions 3024 are located beside the first pressure relief port 3025. These protrusions 3024 prevent the first pressure relief port 3025 from being briefly submerged below the liquid surface H and then floating up again during rapid shaking of the water tank, thus preventing the formation of a water film on the first pressure relief port 3025 and hindering its pressure relief function. The protrusions 3024 are evenly distributed around the first pressure relief port 3025. The buoyancy ball has a cavity 3021, and the branch pipe 3023 penetrates the buoyancy ball to form a closed cavity 3021. The protrusion 3024 is provided with a second pressure relief port (not shown in the attached figure) that communicates with the first pressure relief port. This second pressure relief port may be submerged in the liquid or float on the liquid surface. This design indirectly increases the total area of ​​the first and second pressure relief ports that can function, resulting in a better pressure relief effect. The branch pipe 3023 is arranged along the diameter direction of the buoyancy ball, which ensures that the first pressure relief port 3025 is as close to the liquid surface as possible.

[0064] As a further improved implementation, a filter assembly (not shown in the figure) can be detachably fixed on the multiple protrusions 3024 as fixed fulcrums. The filter assembly covers the first pressure relief port 3025 to prevent impurities in the backflowed sewage from clogging the pressure relief pipe 301 after the first pressure relief port 3025 is briefly submerged below the liquid surface H and then floats up again when the water tank shakes violently, thus hindering its pressure relief function.

[0065] Specifically, such as Figure 6 , Figure 7 , Figure 8 , Figure 9As shown, the water inlet / outlet mechanism includes a mounting base 104 and a fixed base 101 disposed within the mounting base 104. The fixed base 101 is respectively provided with a clean water output component 102 that forms a clean water output channel when pressed, and a sewage inlet component 103 that forms a sewage input channel when pressed. The clean water output component 102 includes an inlet / outlet pin structure 1021 that mates with a through hole (not shown in the figure) on the fixed base 101, a pressure spring 107 that causes the pin structure 1021 to extend, and a limiting component or structure 1011 that limits the extension position of the pin structure 1021. When the pin structure 1021 is pressed and moved, it forms a clean water channel (not shown in the figure) with the through hole. Specifically, the limiting component or structure 1011 is disposed on one side of the through hole. The inlet / outlet pin structure 1021 includes a body 10211 and an inlet / outlet switch component 10212 extending outward from the body 10211. A flow hole 10213 forming part of a clear water channel is provided between the inlet / outlet switch component 10212 and the body 10211. An inlet / outlet sealing structure is provided between the outlet switch component 10212 and the limiting component or structure 1011. The inlet / outlet sealing structure includes a sealing ring 108 fixed in an annular mounting groove (not shown in the figure). The sealing ring 108 has a notch 1084. The notch 1084 and the inner end wall of the fixing seat 101 form a communication gap, which constitutes part of the clear water channel (not shown in the figure). The sealing ring 108 has extensions on both sides in the vertical direction of diameter, namely a first extension 1081 and a second extension 1082, and a protrusion 1083 in the diametrical direction. The protrusion 1083 is located between the first extension 1081 and the second extension 1082. The protrusion 1083 has a sealing mating surface (not shown in the figure), which cooperates with the limiting component or structure 1011 to seal.

[0066] As a further improved implementation, the sealing mating surface is an inclined surface.

[0067] like Figure 7 , Figure 8 , Figure 9 As shown, when the inlet / outlet water switch component 10212 is compressed inward, the protrusion 1083 moves away from the sealing mating surface, forming a gap between the protrusion 1083 and the sealing mating surface. On one hand, if this gap originates in the clean water output component 102, it connects to the clean water channel inside the water tank through the flow hole 10213, allowing liquid to be output. On the other hand, if this gap originates in the wastewater inlet component 103, it connects to the wastewater channel inside the water tank through the flow hole 10213, allowing both liquid and air to be output, effectively reducing the internal pressure of the water tank and balancing the pressure inside and outside. This prevents pressure increases within the water tank.

[0068] Specifically, such as Figure 7 , Figure 8 , Figure 9 As shown, the wastewater inlet assembly 103 has the same structure as the clean water outlet assembly 102, namely, it includes an inlet / outlet pin structure 1031 that mates with a through hole (not shown in the figure) on the fixed base 101, a pressure spring 107 that causes the inlet / outlet pin structure to extend, and a limiting component or structure 1011 that limits the extension position of the inlet / outlet pin structure 1031. When the inlet / outlet pin structure 1031 is pressed and moved, the inlet / outlet pin structure 1031 and the through hole form a wastewater channel (not shown in the figure). Specifically, the limiting component or structure 1011 is located on one side of the through hole. The inlet / outlet pin structure 1031 includes a body notch 10311 with a notch and an inlet / outlet switch component 10212 extending outward from the body notch 10311. An exhaust port 10312 is also provided on the top of the inlet / outlet switch component 10212. The internal exhaust channel (not shown in the figure) of the inlet / outlet pin structure 1031 extends all the way to the mounting base 104. The outer wall of the inlet / outlet pin structure 1031 forms a seal with the inner wall of the matching mounting base 104. A flow hole 10213 forming part of the sewage channel is provided between the inlet / outlet switch component 10212 and the body notch 10311. A water inlet / outlet sealing structure is provided between the water outlet switch component 10212 and the limiting component or structure 1011. This sealing structure includes a sealing ring 108 fixed in an annular mounting groove (not shown in the attached figure). The sealing ring 108 has a notch 1084, which forms a communication gap with the inner end wall of the fixing seat 101, constituting part of a sewage channel (not shown in the attached figure). The sealing ring 108 has extensions on both sides in the vertical direction of its diameter, namely a first extension 1081 and a second extension 1082. A protrusion 1083 is provided in the diametrical direction, located between the first extension 1081 and the second extension 1082. The protrusion 1083 has a sealing mating surface (not shown in the attached figure), which mates with the limiting component or structure 1011 to provide a seal. The difference between the structure of the sewage inlet component 103 and the clean water outlet component 102 is that the inlet / outlet pin structure 1031 includes a body notch 10311 with a notch. A bypass channel with a meandering structure (not shown in the figure) is also provided in the body notch 10311. The bypass channel can still be used as part of the sewage channel. An exhaust port 10312 is also provided on the top of the inlet / outlet switch component 10212 of the body notch 10311. The internal exhaust channel (not shown in the figure) of the inlet / outlet pin structure 1031 extends all the way to the mounting base 104. The outer wall of the inlet / outlet pin structure 1031 and the inner wall of the mating mounting base 104 form a seal.

[0069] As a further improved implementation, the sealing mating surface is an inclined surface.

[0070] It should be noted that the inlet / outlet water pin structure 1021, inlet / outlet water switch component 10212, and inlet / outlet water pin structure 1031 mentioned above can also be referred to as inlet pin structure 1021 or outlet pin structure 1021, inlet switch component 10212 or outlet switch component 10212, inlet pin structure 1031 or outlet pin structure 1031. This does not affect the understanding of the technical essence presented in the entire application by those skilled in the art. The preceding text uses neutral terms to describe the purpose of the relevant components for "inleting" or "outleting" water. Regardless of whether directional terms are used to describe the function of the component, all components mentioned above with the qualifier "inlet / outlet" actually have the function of conveying water in both directions. Any substitution of other names or transformations, modifications, or improvements to similar structures to achieve the same technical purpose or effect are within the scope of protection of this application.

[0071] As a further improved implementation, as needed, a guide structure is provided between the fixed base 101 and the body 10211 to make its extension and retraction movement smoother. The guide structure includes a guide groove (not shown in the figure) provided in the fixed base 101 and a guide strip (not shown in the figure) provided in the body 10211, or a guide groove provided in the body and a guide strip provided in the fixed base, wherein the guide groove and the guide strip cooperate.

[0072] Specifically, such as Figures 6 to 9As shown, the clean water output component 102 and the wastewater inlet component 103 of the water inlet / outlet mechanism 10 are elastically clamped between the fixed base 101 and the mounting base 104. One end of the top pressure spring 107 abuts against the water inlet / outlet pin 1021, and the other end abuts against the mounting base 104. One end of the fixed base 101 is open, and the open end is sleeved on the open end of the water tank body 20. The mounting base 104 is detachably connected to the inner end wall of the fixed base 101. The fixed base 101 is close to the opening. A partition (not shown in the figure) is provided on one side of the end to block the opening. The partition has a conical through hole that abuts against the water inlet / outlet pin 1021. A sealing gasket 105 is sandwiched between the opening end face of the fixing seat 101 and the inner bottom wall of the mounting seat 104. The sealing gasket 105 is made of elastic material. After the fixing seat 101 and the mounting seat 104 are detachably connected by fastening screws, the elastic sealing gasket 105 can fill the gap between them, effectively preventing leakage. The mounting base 104 is open at one end, and the open end abuts against the fixed base 101. The mounting base 104 is provided with a plurality of sewage guide holes 1041 that can guide the backflow of sewage to the gap between the outer wall of the filter assembly and the inner wall of the water tank body. The other end of the mounting base 104 is closed, but a through hole (not shown in the figure) communicating with the clean water output assembly 102 and the sewage inlet assembly 103 is provided on the closed end face of the mounting base 104. A water suction pipe interface 1043 extends outward from the through hole of the clean water output assembly 102 provided on the closed end face of the mounting base 104. A water suction pipe 106 for sucking water contained in the water tank body 20 is sleeved on the water suction pipe interface 1043. The end of the pressure relief pipe 301 that is not connected to the buoyancy component 302 is sleeved on the pressure relief interface 1047. The filter assembly 40 has a plurality of hollow structures (not shown in the figure) on its peripheral wall and bottom wall, and its outer surface is covered with a filter screen (not shown in the figure). A water suction pipe 106 is fitted onto the water suction pipe interface 1043. The water suction pipe 106 extends to a region close to the bottom wall of the filter assembly 40. This allows the water filtered in the filter assembly 40 within the water tank device 1 with constant internal and external pressure to still be drawn in by the water suction pipe 106 when the water inlet / outlet mechanism 10 is facing upwards. This drawable state is maintained until the water level of the filtered water in the filter assembly 40 is lower than the lowest opening of the water suction pipe 106 (not shown in the figure).The mounting base 104 is provided with a plurality of sewage guide holes 1041 that guide the returned sewage to the gap between the outer wall of the filter assembly and the inner wall of the water tank body. After the sewage passes through the sewage return port (not shown in the figure) on the fixed base 101 which is connected to the sewage inlet assembly 103, it passes through the return channel and then through the sewage guide holes 1041 and is dispersed into the gap between the outer wall of the filter assembly and the inner wall of the water tank body. After filtration, it becomes "clean water" that seeps into the cavity of the water tank device 1 with constant internal and external pressure. After being filtered by the filter assembly 40, the sewage is drawn into the clean water channel through the suction pipe 106 and finally sent out to the water outlet passage (not shown in the figure) of the cleaner through the clean water output assembly 102. A vent 1045 is also provided on the closed end face of the mounting base 104. This vent 1045 allows the pressure relief water tank device 1 to still have a pressure relief channel to slightly adjust the gas pressure inside and outside the pressure relief water tank device even when the water inlet / outlet mechanism 10 is facing upwards and the pressure relief mechanism 30 has lost its pressure regulating function. When the water inlet / outlet mechanism 10 is facing downwards and the water level in the filter assembly 40 is lower than the highest opening of the suction pipe 106, water can still enter the clean water channel through the vent 1045 and then be sent out through the clean water output assembly 102 to the water outlet passage of the cleaner (not shown in the figure). A guide rib (not shown in the figure) is provided on the outer wall of the mounting base 104 that mates with the water tank body 20. This guide rib helps the installed water inlet / outlet mechanism 10 to easily snap into the water tank body 20. Since the outer wall of the water inlet / outlet mechanism 10 and the water tank body 20 have a regular symmetrical shape, the guide rib also serves to prevent reverse connection.

[0073] Specifically, the water tank body 20 includes an upper water tank body (not shown in the attached figure) and a lower water tank body (not shown in the attached figure). The upper water tank body and the lower water tank body are sealed together. One side of the bottom of the lower water tank body extends upwards as a slope 201. The top end of the slope, opposite to the water inlet / outlet mechanism 10, is provided with a concave snap-fit ​​part (not shown in the attached figure) for easy installation and fixing. This snap-fit ​​part is provided with a concave snap-fit ​​groove 202. When fixing the water tank 1, the corresponding buckle on the cleaner can be engaged in the snap-fit ​​groove 202 of the snap-fit ​​part. When it is necessary to remove the water tank 1, the corresponding buckle can be released to remove the water tank 1. As a further improved embodiment, the upper water tank body and the lower water tank body are sealed together by an ultrasonic welding layer (not shown in the figure).

[0074] As a further improved implementation, the upper body and lower body of the water tank are sealed together through a secondary injection molding process.

[0075] As a further improved implementation, the upper body and lower body of the water tank are sealed together by a direct bonding process.

[0076] As a further improved implementation, the upper body and lower body of the water tank are an integrated structure, with a horizontal stepped surface 203 between them. The names "upper body" and "lower body" are merely component names used for convenience in describing different parts of the water tank body 20 in the vertical direction.

[0077] Specifically, such as Figure 10 As shown, when the water inlet / outlet mechanism 10 of the water tank 1 is tilted downwards, a portion of the pressure relief mechanism 30 on the side away from the water inlet / outlet mechanism 10 is above the liquid surface H. Regardless of whether the opening of the suction pipe 106 is always below the liquid surface H, the water tank 1 still has the ability to release pressure to the outside of the pressure relief water tank device and also has the ability to continuously output clean water. When the inlet of the suction pipe 106 is below the liquid surface H, the suction pipe 106 can naturally achieve the function of "discharging water". When the inlet of the suction pipe 106 is above the liquid surface H, the vent 1045 of the water inlet / outlet mechanism 10 is lower than the liquid surface H and is only a very small bypass branch of the water outlet channel. The bypass branch of the vent 1045 can achieve the function of "discharging water" under the pressure of the liquid surface H. At the same time, due to the pressure difference between the inside and outside of the water tank 1, the water tank 1 of the cleaner used in this posture has the ability to supply water to the outside and release pressure to the outside.

[0078] Specifically, such as Figure 11As shown, when the water inlet / outlet mechanism 10 of the water tank 1 is tilted upwards, a portion of the pressure relief mechanism 30 is located above the liquid surface H on the side closest to the water inlet / outlet mechanism 10. At this time, the opening of the suction pipe 106 is lower than the liquid surface H. Under the combined action of water pressure and air pressure, the pressure is released directly outside the water tank 1 through the pressure relief mechanism 30 and along the pressure relief pipe. Simultaneously, the vent 1045 of the water inlet / outlet mechanism 10 is higher than the liquid surface H and is merely a very small bypass branch of the water outlet channel. The vent 1045 is connected to the outside atmosphere. A circuitous structure (not shown in the attached diagram) is provided before the vent 1045 to block the flow of water to the bypass branch of the vent 1045. Simply put, the bypass branch of the vent 1045, which is connected to the outside atmosphere, can achieve the effect of "breathable but not water-permeable". At this time, the bypass branch of the vent 1045, which is connected to the outside atmosphere, has the ability to release pressure outside the water supply device. Meanwhile, due to the pressure difference between the inside and outside of the water tank 1, and because the suction pipe 106 always has an inlet and / or suction hole (not shown in the attached diagram) below the liquid level H, the clean water output component can continuously output clean water. The cleaner's water tank 1, used in this manner, has the ability to release pressure outside the tank and continuously output clean water. Of course, when the liquid level H is lower than the inlet of the suction pipe 106, the water tank 1 will naturally be unable to continuously output clean water, at which point the user is prompted to add clean water to the water tank 1 to continue using the cleaner.

[0079] 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 handheld electric car washer, characterized in that, include: Electric scrubbing head; The main body is connected to the electric scrubbing head; The water tank, located on the machine body, supplies water to the electric scrubbing head and collects wastewater. It includes a water tank body with a liquid storage cavity and an inlet / outlet mechanism that connects the water tank body to the storage cavity. It also includes a filter assembly that filters the liquid returning to the water tank body and a pressure relief mechanism that maintains the pressure balance of the water tank. The filter assembly is sleeved on the inlet / outlet mechanism, and its outer wall has a gap with the inner wall of the water tank body. One end of the pressure relief mechanism is connected to the inlet / outlet mechanism and is surrounded by the filter assembly. The pressure relief mechanism includes a pressure relief pipe connected to the water inlet / outlet mechanism. The free end of the pressure relief pipe is equipped with a buoyancy component that can adjust the air pressure inside the water tank. A flexible structure is provided between the water inlet / outlet mechanism and the buoyancy component. The buoyancy component includes a buoyancy ball, which can release air pressure to the outside of the water tank through the pressure relief pipe. The buoyancy ball is equipped with a branch pipe, which includes a fixed end that extends out of the buoyancy ball and is fixed to the pressure relief pipe, and a free end that is flush with the buoyancy ball. The free end is equipped with a first pressure relief port, and there is one or more protrusions next to the first pressure relief port to prevent liquid from being poured into the first pressure relief port.

2. The handheld electric car washer according to claim 1, characterized in that, Multiple protrusions detachably secure a filter assembly, which covers the first pressure relief port.

3. The handheld electric car washer according to claim 1, characterized in that, The water inlet and outlet mechanism includes a mounting base and a fixed base located within the mounting base. The fixed base is respectively provided with a clean water output component that forms a clean water output channel when pressed and a sewage inlet component that forms a sewage input channel when pressed.

4. The handheld electric car washer according to claim 3, characterized in that, The clean water output assembly includes a water outlet pin structure that engages with a through hole on a fixed base, a pressure spring that causes the water outlet pin structure to extend, and a water outlet limiting component that limits the extension position of the water outlet pin structure. The water outlet limiting component is part of the fixed base. When the water outlet pin structure is pressed and moved, the water outlet pin structure and the through hole form a clean water output channel.

5. The handheld electric car washer according to claim 3, characterized in that, The sewage inlet assembly includes a return water venting pin structure that mates with a through hole on the fixed base, a pressure spring that causes the return water venting pin structure to extend, and a return water limiting component that limits the extension position of the return water venting pin structure. The return water limiting component is part of the fixed base. When the return water venting pin structure is pressed and moved, the return water venting pin structure and the through hole form a sewage inlet channel. The return water venting pin structure is provided with a vent hole and a notch that communicates with the space surrounded by the mounting base and the fixed base.

6. The handheld electric car washer according to claim 4, characterized in that, The water outlet pin structure includes a main body and a water outlet switch component located on the main body. A flow hole forming part of the clean water output channel is provided between the water outlet switch component and the main body. A sealing structure is provided between the water outlet switch component and the water outlet limit component.

7. The handheld electric car washer according to claim 5, characterized in that, The return water venting pin structure includes a main body and a return water switch component located on the main body. A flow hole forming part of the return water input channel is provided between the return water switch component and the main body. A sealing structure is provided between the return water switch component and the return water limiting component.

8. The handheld electric car washer according to any one of claims 6 or 7, characterized in that, The sealing structure includes a sealing ring fixed in an annular mounting groove. The sealing ring has a notch, and the notch and the end of the fixing seat form a communication gap, which constitutes part of the clean water output channel or the sewage input channel.

9. The handheld electric car washer according to claim 8, characterized in that, The sealing ring has extensions on both sides in the vertical direction of the diameter and a protrusion in the diameter direction, and the protrusion has a sealing mating surface.

10. The handheld electric car washer according to claim 9, characterized in that, The sealing mating surface is an inclined plane.

11. The handheld electric car washer according to claim 5, characterized in that, The mounting base has multiple sewage guide holes on its side wall that can guide the backflowing sewage into the gap between the outer wall of the filter assembly and the inner wall of the water tank.

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