A scrubbing head
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- WUHAN WATER MAGIC CUBE INTELLIGENT TECH CO LTD
- Filing Date
- 2022-10-13
- Publication Date
- 2026-06-09
Smart Images
Figure CN122166050A_ABST
Abstract
Description
[0001] This application is a divisional application of Chinese Patent Application No. 202211255319.X, entitled "A pressure relief mechanism and washing vehicle device installed in a washing head", filed on October 13, 2022, 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 washing head for use in vehicle washing devices. 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] Existing car washing equipment typically requires wiping and cleaning to be done separately, resulting in low washing efficiency. Summary of the Invention
[0005] The main technical problem solved by this invention is to provide a wash head with a pressure relief function for use in a wash vehicle device.
[0006] To solve the above-mentioned technical problems, the present invention provides a washing head for a washing vehicle device, comprising:
[0007] The scrubbing roller achieves continuous scrubbing by continuously rolling on the surface to be cleaned;
[0008] The cleaning mechanism continuously cleans and maintains the surface humidity of the washing and wiping rollers, and includes a sealed liquid exchange zone.
[0009] The machine body is equipped with a removable cleaning fluid container.
[0010] The pump, installed on the machine body, delivers the cleaning fluid from the cleaning fluid holding mechanism to the cleaning mechanism.
[0011] The pressure relief mechanism releases the air pressure in the cleaning fluid container during the cleaning process through the exhaust pipe;
[0012] The pump's inlet is connected to the outlet of the cleaning fluid holding mechanism via a pipeline. The pump's outlet is connected to the inlet of the sealed liquid exchange zone via a pipeline. The outlet of the sealed liquid exchange zone is connected to the return port of the cleaning fluid holding mechanism via a pipeline. The cleaning fluid holding mechanism is equipped with an exhaust port, which is connected to a pressure relief connector via an exhaust pipe. During the cleaning process, the air pressure of the cleaning fluid holding mechanism is released through the pressure relief mechanism and finally released onto the surface of the scrubbing roller along with water and air through the pressure relief connector.
[0013] In one or more alternative embodiments, the scrubbing head includes two clamping parts extending from the machine body to both ends, a scrubbing roller elastically clamped by the two clamping parts, a cleaning mechanism connecting the two clamping parts and cleaning the scrubbing roller, and an upper cover covering the cleaning mechanism. The surface of the scrubbing roller is provided with a water-absorbing layer.
[0014] In one or more alternative embodiments, the two clamping parts include an upper clamping end and a lower clamping end, the upper clamping end and the lower clamping end are provided with water supply channels inside, and the upper clamping end and / or the lower clamping end are provided with clamping holes for clamping the washing and wiping roller and sliding steps to facilitate the sliding out of the washing and wiping roller.
[0015] In one or more alternative embodiments, the cleaning mechanism includes a first interference portion that forms a compression with the surface of the washing and wiping roller. The first interference portion is provided with a fixing portion and a sealing portion on both sides of the circumferential direction of the washing and wiping roller surface, and the sealing portion forms a sealed liquid exchange zone on the surface of the washing and wiping roller.
[0016] In one or more alternative embodiments, the sealing portion forms a V-groove between the side opposite to the first interference portion and the fixing portion, and a rib is provided between the sealing portion and the fixing portion on the side opposite to the first interference portion.
[0017] In one or more alternative embodiments, the cleaning mechanism further includes a water-guiding structure that is connected to the sealing portion and contacts the surface of the scrubbing roller to form a watertight contact.
[0018] In one or more alternative embodiments, the water-guiding structure includes a water-guiding portion that contacts the surface of the washing and rubbing roller and a water-storing portion connected to the contact portion. The water-guiding portion extends into the sealed liquid exchange zone. The portion of the water-guiding portion near the sealed liquid exchange zone contacts the surface of the washing and rubbing roller, and the portion of the water-guiding portion away from the sealed liquid exchange zone has a gap with the surface of the washing and rubbing roller.
[0019] In one or more alternative embodiments, the water-guiding section includes a second interference section that interferes with the surface of the washing and rubbing roller, and a pressure relief gap is provided between the water-guiding structure after the second interference section and the surface of the washing and rubbing roller.
[0020] In one or more alternative embodiments, the water-guiding structure is provided with guide strips at both ends that partially contact the surface of the washing and rubbing roller, and the inner side of the guide strip is provided with an inclined surface that locally presses the surface of the washing and rubbing roller, the inclined surface being an arc-shaped structure.
[0021] In one or more alternative embodiments, the first interference portion has arc-shaped protrusions that are more radially oriented towards the washing and wiping roller at both ends near the cleaning mechanism along the length direction of the washing and wiping roller, and the portion of the arc-shaped protrusion closer to both ends of the housing has a larger interference with the washing and wiping roller.
[0022] In one or more alternative embodiments, the arcuate protrusion deviates from the axial direction of the scrubbing roller and gradually changes arc in the direction of rotation of the scrubbing roller, either in the same direction or against the direction of rotation.
[0023] In one or more alternative embodiments, the pressure relief mechanism includes:
[0024] The first fixing part is installed below the cleaning mechanism and includes an upper part of an arc-shaped structure that matches the surface of the scrubbing roller and a lower part that forms a pressure relief structure.
[0025] The pressure relief connector is installed in the middle of the first fixing part.
[0026] In one or more alternative embodiments, the cleaning mechanism further includes a water-guiding structure that is connected to the sealing portion and contacts the surface of the scrubbing roller to form a watertight contact.
[0027] In one or more alternative embodiments, the sealing portion extends outward to form a mounting portion with a flat mounting surface for fixing the water-guiding structure. The sealing portion and the water-guiding structure cooperate on the surface of the washing and wiping roller to form a sealed liquid exchange zone. The top cover can be snapped into the slot of the fixing portion.
[0028] In one or more alternative embodiments, the cleaning mechanism further includes a second interference portion that slightly interferes with the scrubbing roller to guide the wastewater away.
[0029] In one or more optional embodiments, the water guiding structure includes a water guiding part that contacts the surface of the washing and rubbing roller, a water storage part connected to the water guiding part, a guide strip that causes interference between the two ends of the washing and rubbing roller, and an extension part having a first gap between it and the surface of the washing and rubbing roller.
[0030] The circumferential end of the water inlet section is provided with a second interference section that forms a water seal with the surface of the washing and rubbing roller. At both ends of the length direction of the water inlet section, there are guide strips that cause interference between the surfaces of the two ends of the washing and rubbing roller. The guide strips are in partial contact with the surface of the washing and rubbing roller. The inner side of the guide strips is provided with an inclined surface, which is an arc-shaped structure.
[0031] In one or more alternative embodiments, the guide strip extends with protrusions toward the sealed liquid exchange zone, and the protrusions, together with the first interference portion, the second interference portion, the water storage portion and the sealing portion on both sides of the sealed liquid exchange zone, surround the surface of the washing roller to form a sealed sealed liquid exchange zone.
[0032] The water storage section, water intake section, guide strip, and sealing section cooperate with the surface of the washing and wiping roller to form a sealed liquid exchange zone. The extension section and the water intake section are located on both sides of the water storage section. The water storage section and the sealing section are fixed by a waterproof connection.
[0033] In one or more alternative embodiments, the second interference portion adopts a strip-shaped structure.
[0034] In one or more alternative embodiments, the water inlet extends to the inner wall of the upper clamping end and the lower clamping end of the two clamping parts extending from the body to both ends.
[0035] In one or more alternative embodiments, the cleaning mechanism further includes a first fixing member that cooperates with the sealing part to fix the water-guiding structure. The upper half of the surface of the first fixing member near the washing and rubbing roller is provided with an arc-shaped structure that matches the surface of the washing and rubbing roller. There is a second gap between the arc-shaped structure and the surface of the washing and rubbing roller that communicates with the first gap. The lower half of the surface of the first fixing member near the washing and rubbing roller is provided with a third interference part and a fourth interference part that abut against the surface of the washing and rubbing roller.
[0036] In one or more alternative embodiments, the lower half of the surface of the first fixing member near the washing and wiping roller is provided with an arc surface that matches the surface of the washing and wiping roller. The arc surface is provided with a first pressure relief groove with one side boundary being a third interference portion and a second pressure relief groove with one side boundary being a third interference portion and the other side boundary being a fourth interference portion.
[0037] In one or more alternative embodiments, the width of the first pressure relief groove pointing to the inner wall of the two clamping portions in the axial dimension of the washing roller is smaller than that of the second pressure relief groove.
[0038] In one or more alternative embodiments, at the two ends of the first pressure relief groove, the first pressure relief space formed with the surface of the washing and rubbing roller is obliquely narrowed upward to be flush with the arc surface. Along the direction of the first pressure relief groove pointing towards the inner wall of the two clamping parts, the arc surface is provided with a collapsed part that is obliquely downward further away from the surface of the washing and rubbing roller. The second pressure relief groove extends axially along the washing and rubbing roller to the inner wall of the two clamping parts. The second pressure relief groove, the inner wall of the two clamping parts, and the surface of the washing and rubbing roller partially surround the second pressure relief space.
[0039] In one or more alternative embodiments, the first pressure relief groove is inclined upwards towards both ends of the washing and rubbing roller and terminates on the inclined end surface that is integrated with the arc surface. The fusion point of the arc surface continues to collapse away from the surface of the washing and rubbing roller in the direction of both ends of the washing and rubbing roller to form a collapsed part. During operation, the pressure to be released can continue to be released along the second pressure relief inlet formed by the collapsed part after passing the end of the first pressure relief groove.
[0040] In one or more alternative embodiments, the second pressure relief groove extends to both ends of the washing and rubbing roller, and the second pressure relief inlet is connected to the second pressure relief groove.
[0041] In one or more alternative embodiments, the arc surface forms a second pressure relief left inlet and a second pressure relief right inlet through its collapsed portion, and the first gap, the second gap, the first pressure relief space, and the second pressure relief space form a complete pressure relief chamber; when pressure relief is required, the air outlet of the pressure relief connector is connected to the pressure relief chamber through a solenoid valve.
[0042] In one or more alternative embodiments, the fourth interference portion is detachably mounted on the first fixing member.
[0043] In one or more alternative embodiments, the fourth interference portion is detachably mounted on the second fixing member.
[0044] In one or more alternative embodiments, the sealing portion forms a V-groove between the side opposite to the first interference portion and the fixing portion, and a rib is provided between the sealing portion and the fixing portion on the side opposite to the first interference portion.
[0045] In one or more alternative embodiments, a pressure relief chamber is provided between the pressure relief chamber and the inner cavity of the container from which the return water of the washing vehicle device is collected, filtered and output, and a pressure relief vent is provided between the pressure relief chamber and the first pressure relief space.
[0046] In one or more alternative embodiments, the sealed liquid exchange zone has an arc-shaped cross-section along its length perpendicular to the horizontal direction.
[0047] In one or more alternative embodiments, the first interference portion has protrusions at both ends, and the pressure formed by the protrusions on the surface of the washing roller is greater than that of the first interference portion.
[0048] In one or more alternative embodiments, the protrusion is not collinear with the first interference portion in the length direction, and the protrusion extends into the sealed liquid exchange zone.
[0049] In one or more alternative embodiments, the first interference portion has a triangular cross-section, and the top of each of the three angles is a smooth arc-shaped structure.
[0050] In one or more alternative embodiments, the first fixing member extends along the length direction from both ends of the third interference portion and simultaneously extends radially upward along the outer surface of the washing and scrubbing roller to form A-shaped water-collecting protrusions. The first fixing member continues to extend towards both ends at the water-collecting protrusions, while the interference fit between the first fixing member and the outer surface of the washing and scrubbing roller gradually decreases to zero until a gap is left between them, forming a collapsed section. The first fixing member has a slight interference fit with the outer surface of the washing and scrubbing roller at the third interference portion and the two water-collecting protrusions, forming a fine particulate waste collection space for holding fine particulate waste in the lower part of the second gap.
[0051] The advantages of the wash and wiper vehicle device of the present invention, which is equipped with a pressure relief mechanism installed inside the wash and wiper head, are as follows:
[0052] 1. The width of the first pressure relief groove pointing towards the inner wall of the two clamping parts in the axial dimension of the washing and rubbing roller is smaller than that of the second pressure relief groove. At both ends of the first pressure relief groove, it forms a first pressure relief space with the surface of the washing and rubbing roller. Along the direction of the first pressure relief groove pointing towards the inner wall of the two clamping parts, the arc surface is provided with a collapsed part that slopes downward and further away from the surface of the washing and rubbing roller. The second pressure relief groove extends axially along the washing and rubbing roller 1 to the inner wall of the two clamping parts. The second pressure relief groove, the inner wall of the two clamping parts, and part of the surface of the washing and rubbing roller surround the second pressure relief space. The arc surface forms a second pressure relief left inlet and a second pressure relief left and right inlets through the collapsed part. The first gap, the second gap, the first pressure relief space, and the second pressure relief space form a complete pressure relief chamber. Since the first gap, the second gap, the first pressure relief space, and the second pressure relief space form a large area projection on the surface of the washing and rubbing roller, when pressure relief is required, the air outlet of the pressure relief connector is connected to the pressure relief chamber. The pressure being released can be absorbed by the washing and rubbing roller more quickly, thereby avoiding the phenomenon of bubbles when the pressure is released to the washing and rubbing roller.
[0053] 2. The first fixing member extends radially upward along the outer surface of the washing and scrubbing roller at both ends of the third interference section, forming A-shaped water-collecting protrusions. At the water-collecting protrusions, the first fixing member continues to extend towards both ends, while its interference fit with the outer surface of the washing and scrubbing roller gradually decreases to zero until a gap is left between them, forming a collapsed section. The first fixing member has a slight interference fit with the outer surface of the washing and scrubbing roller 1 at the third interference section and the two water-collecting protrusions, forming a fine particulate waste collection space at the lower part of the second gap for holding fine particulate waste. On one hand, the outer side of the third interference section is located close to the vehicle surface. When particulate waste is present and has passed through the second pressure relief groove, it can be separated from the surface of the scrubbing roller by the action of the outer side of the third interference section. When the particulate waste is adhered to the highest point of the third interference section by the adhesive action of the water-absorbing layer on the wetted surface of the scrubbing roller, it is then impacted by the venting air and wetted again by the sewage squeezed out by the first interference section, causing the particulate waste to deposit on the concave side of the third interference section. When the third interference section is located on the second fixing member, it can be easily removed, thus facilitating the cleaning of the particulate waste deposited in the fine particulate waste collection space. On the other hand, when the vented air is released into the pressure relief chamber through the air outlet, it encounters the fine particulate waste collection space filled with particulate waste or sewage. Due to the gap between the collapsed section of the first fixing member and the water-absorbing layer on the surface of the washing roller, a second pressure relief left inlet and a second pressure relief left and right inlet are formed. After encountering the obstruction of the fine particulate waste collection space, the vented air will be discharged from the second pressure relief left inlet and the second pressure relief left and right inlet into the second pressure relief space, thereby realizing the secondary release of the pressure accumulated inside the car wiping device. Attached Figure Description
[0054] 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.
[0055] Figure 1 This is a schematic diagram of an embodiment of the washing and wiping vehicle device.
[0056] Figure 2 For along Figure 1 Schematic diagram of the cross-sectional structure in the CC direction.
[0057] Figure 3 for Figure 2 Enlarged schematic diagram of part B in the middle.
[0058] Figure 4 for Figure 2Exploded view of the front and middle section structure.
[0059] Figure 5 for Figure 2 A schematic diagram of the structure without the scrubbing roller.
[0060] Figure 6 This is a schematic diagram of the pressure relief mechanism installed inside the scrubbing head.
[0061] Figure 7 for Figure 2 A schematic diagram of the structure from another perspective without the washing and wiping rollers.
[0062] Figure 8 As another embodiment Figure 2 Enlarged schematic diagram of part B in the middle.
[0063] Figure label:
[0064] 1. Washing roller, 11. Absorbent layer, 12. Motor, 2. Cleaning mechanism, 3. Wastewater container, 4. Machine body, 5. Handle, 6. Water pump, 7. Exhaust pipe, 8. Sealed liquid exchange area A
[0065] First interference part 20, arc-shaped protrusion 201, fixing part 21, sealing part 22, rib plate 23, mounting part 24, top cover 25, pressure relief connector 28.
[0066] Water intake structure 61, water intake section 611, second interference section 6111, water storage section 614, straight section 616, extension section 610, pressure relief chamber 620, pressure relief and exhaust port 6201, first pressure relief groove G1, second pressure relief groove G2, second pressure relief left inlet D1, second pressure relief left and right inlets D2
[0067] Clamping the upper end 41, clamping the upper end shell 411, clamping the upper end bottom shell 412.
[0068] Clamping lower end 42, clamping lower end face shell 421, clamping lower end bottom shell 422.
[0069] First fixing part 62, third interference part 621, fourth interference part 622, arc surface 623, collapse part 624, mounting hole 625;
[0070] 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
[0071] 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.
[0072] 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.
[0073] 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.
[0074] 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.
[0075] 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.
[0076] 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.
[0077] 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.
[0078] like Figures 1-7 As shown, the present invention provides an embodiment of a car washing and wiping device.
[0079] like Figure 1 , Figure 2 As shown, the washing and wiping vehicle device includes a washing and wiping head (not shown in the attached figure) and a handle 5 connected to the washing and wiping head. The washing and wiping head includes a washing and wiping roller 1, a cleaning mechanism 2, a cleaning liquid holding mechanism 3, a machine body 4, a pump 6 that transports the cleaning liquid in the cleaning liquid holding mechanism to the cleaning mechanism, and a pressure relief mechanism (not shown in the attached figure) that releases the air pressure in the cleaning liquid holding mechanism 3 during the cleaning process through an exhaust pipe 7. The washing and wiping roller 1 continuously washes and wips the surface to be cleaned by continuously rolling on it. The cleaning mechanism 2 continuously cleans the surface of the washing and wiping roller 1 after washing and wiping the surface to be cleaned and maintains the surface humidity of the washing and wiping roller. It includes a sealed liquid exchange area A. The cleaning fluid holding mechanism 3 is detachably mounted on the body 4. The pump 6 is installed inside the body closer to the handle 5. The pump 6 is powered by a battery (not shown in the figure) built into the handle 6 through a connector (not shown in the figure) at the end of the body closer to the handle 5. The inlet (not shown in the figure) of the pump 6 is connected to the outlet (not shown in the figure) of the cleaning fluid holding mechanism 3 through a pipeline. The outlet (not shown in the figure) of the pump 6 is connected to the inlet (not shown in the figure) of the sealed liquid exchange zone A through a pipeline. The outlet (not shown in the figure) of the sealed liquid exchange zone A is connected to the return port (not shown in the figure) of the cleaning fluid holding mechanism through a pipeline. The cleaning fluid holding mechanism 3 is also equipped with an exhaust port (not shown in the attached figure), which is connected to the pressure relief connector 28 through the exhaust pipe 7. During the cleaning process, the air pressure of the cleaning fluid holding mechanism 3 is released through the pressure relief mechanism (not shown in the attached figure) and finally released through the pressure relief connector 28, along with water and air, to the surface of the scrubbing roller 1.
[0080] Specifically, such as Figure 1 , Figure 2 , Figure 5 , Figure 7 As shown, the scrubbing head includes two clamping parts (including an upper clamping end 41 and a lower clamping end 42) extending from the body 4 to both ends, a scrubbing roller 1 elastically clamped by the two clamping parts, a cleaning mechanism 2 connecting the two clamping parts and cleaning the scrubbing roller 1, and an upper cover 25 covering the cleaning mechanism 2. The surface of the scrubbing roller 1 is provided with a water-absorbing layer 11, which in this embodiment is a sponge. The scrubbing roller 1 is directly driven by a motor 12, or it can be driven by a motor or the like through a transmission mechanism (not shown in the figure). Continuous scrubbing is achieved by the scrubbing roller 1 rolling on the surface to be cleaned.
[0081] like Figure 2 , Figure 3 , Figure 4 , Figure 7 As shown, the cleaning mechanism continuously cleans and maintains the surface humidity of the washing roller 1 after the vehicle surface has been washed and wiped. It includes forming a sealed liquid exchange zone A on the surface of the washing roller 1 and a first interference portion 20 that squeezes the liquid on the washing roller 1 into the sealed liquid exchange zone A.
[0082] The cleaning mechanism 2 adopts an integral structure. Although the following embodiments use the cleaning mechanism 2 as multiple parts, the component numbers and names involved in the following description are consistent with this embodiment. Alternatively, those skilled in the art can make simple modifications and expansions based on the following text description and drawings, all of which are within the protection scope of the technical solution disclosed in this embodiment.
[0083] As a further improved implementation, the cleaning mechanism 2 can also be implemented by multiple parts working together. When multiple separate parts work together, the processing and manufacturing difficulty of the cleaning mechanism can be reduced.
[0084] This embodiment uses the cleaning mechanism 2 as an example of a separate component structure for illustration.
[0085] like Figure 2 , Figure 3 , Figure 4 As shown, the cleaning mechanism 2 includes a first interference portion 20 that forms a pressure against the surface of the scrubbing roller 1. The first interference portion 20 has a fixing portion 21 and a sealing portion 22 on both sides of the circumferential direction of the surface of the scrubbing roller 1. The sealing portion 22 extends outward to form a mounting portion 24 with a flat mounting surface for fixing the water-guiding structure 61. The sealing portion 22 and the water-guiding structure 61 cooperate to form a sealed liquid exchange zone A on the surface of the scrubbing roller 1. The upper cover 25 can be snapped into the slot of the fixing portion 21 (not shown in the figure) and can be detachably connected to it. The water-guiding structure 61 can connect with the sealing portion 22 and contact the surface of the scrubbing roller 1 to form a water-sealed contact.
[0086] As a further improved implementation method, such as Figure 4 , Figure 7 As shown, the first interference portion 20 has arc-shaped protrusions 201 pointing radially towards the washing roller 1 at both ends near the cleaning mechanism 2 along the length of the washing roller 1. The portion of the arc-shaped protrusion closer to the ends of the housing has a larger interference with the washing roller 1. This ensures that even if there is slight misalignment during the high-speed rotation of the washing roller 1, liquid leakage from both ends of the cleaning mechanism 2 will not occur due to insufficient interference between the washing roller and the first interference portion. The arc-shaped protrusion 201 is offset from the axial direction of the washing roller 1, and the arc can be gradually changed along or against the direction of rotation of the washing roller 1.
[0087] like Figure 3 , Figure 4 As shown in the figure, the water-guiding structure 61 includes a water-guiding part 611 in contact with the surface of the washing and rubbing roller 1, a water-storing part 614 connected to the water-guiding part 611, guide strips 612 that cause interference between the two ends of the washing and rubbing roller 1, and an extension part 610 with a first gap (not shown in the figure) between it and the surface of the washing and rubbing roller 1. The circumferential end of the water-guiding part 611 is provided with a second interference part 6111 that forms a water seal with the surface of the washing and rubbing roller 1. Guide strips 612 that cause interference between the two ends of the washing and rubbing roller 1 are respectively provided at both ends of the length direction of the water-guiding part 611, that is, the guide strips 612 are in partial contact with the surface of the washing and rubbing roller 1. The inner side of the guide strip 612 is provided with an inclined surface (not shown in the figure). The inclined surface is an arc-shaped structure. The arc-shaped structure design of the inclined surface can keep the contact pressure of each part when the inclined surface contacts the surface of the washing and rubbing roller 1 basically the same. The guide bar 612 extends towards the sealed liquid exchange zone A with a protrusion 6121. This protrusion, together with the first interference portion 20, the second interference portion 2111, the water storage portion 614, and the sealing portion 22 on both sides of the sealed liquid exchange zone A, encloses the surface of the washing roller 1 to form a sealed liquid exchange zone A. The water storage portion 614, the water intake portion 611, the guide bar 612, and the sealing portion 22 cooperate with the surface of the washing roller 1 to form the sealed liquid exchange zone A. The extension portion 610 and the water intake portion 611 are located on both sides of the water storage portion 614. The water storage portion 614 and the sealing portion 22 are fixed by a waterproof connection.
[0088] As a further improved implementation, the second interference part 6111 can adopt a strip structure, and the contact surface formed between it and the surface of the washing and rubbing roller 1 is as small as possible. This can ensure that no leakage occurs from the second interference part 6111 during the water exchange process, while also reducing the rotational resistance of the washing and rubbing roller 1 during operation. In addition, it can effectively increase the gap length in the circumferential direction of the washing and rubbing roller 1, thereby increasing the pressure relief area.
[0089] As a further improved implementation method, such as Figure 2As shown, the water-guiding structure 61 includes a water-guiding part 611 that contacts the surface of the washing and rubbing roller 1, a water-storing part 614 connected to the water-guiding part 611, and an extension part 610 with a first gap between it and the surface of the washing and rubbing roller 1. The circumferential end of the water-guiding part 611 is provided with a second interference part 6111 that forms a watertight contact with the surface of the washing and rubbing roller 1. The water-guiding part 611 extends all the way to the inner wall of the clamping upper end 41 and the clamping lower end 42 of the two clamping parts that extend from the machine body 4 to both ends. This eliminates the need for the complex structure of guide strips 612 that extend at both ends of the length direction of the water-guiding part 611 to cause interference between the surfaces of the two ends of the washing and rubbing roller 1. This implementation can reduce the processing and manufacturing difficulty of the water-guiding structure 61.
[0090] like Figure 3 , Figure 4 As shown, the cleaning mechanism 2 also includes a first fixing member 62 that cooperates with the sealing part 22 to fix the water-guiding structure 61. The upper half of the surface of the first fixing member 62 near the washing roller 1 is provided with an arc-shaped structure that matches the surface of the washing roller 1, and there is a second gap (not shown in the figure) between the arc-shaped structure and the surface of the washing roller 1 that communicates with the first gap. The lower half of the surface of the first fixing member 62 near the washing roller 1 is provided with a third interference part 621 and a fourth interference part 622 that abut against the surface of the washing roller 1. The lower half of the surface of the first fixing member 62 near the washing roller 1 is provided with an arc surface 623 that matches the surface of the washing roller 1. Furthermore, the arc surface 623 is provided with a first pressure relief groove G1 with one side boundary being the third interference part 621 and another with one side boundary being the third interference part 621, which are further concave inwards away from the surface of the washing roller 1. The second pressure relief groove G2, with the interference section 621 on one side and the fourth interference section 622 on the other, has a width in the axial dimension of the first pressure relief groove G1 pointing towards the inner wall of the two clamping parts smaller than that of the second pressure relief groove G2. At both ends of the first pressure relief groove G1, the first pressure relief space (not shown in the figure) formed with the surface of the washing and rubbing roller 1 is obliquely narrowed upwards to be flush with the arc surface 623. Along the direction of the first pressure relief groove G1 pointing towards the inner wall of the two clamping parts, the arc surface 623 has a collapsed part 624 that is obliquely downwards and further away from the surface of the washing and rubbing roller 1. The second pressure relief groove G2 extends axially along the washing and rubbing roller 1 to the inner wall of the two clamping parts. The second pressure relief groove G2, the inner wall of the two clamping parts, and part of the surface of the washing and rubbing roller 1 surround the second pressure relief space (not shown in the figure). The arc surface 623 forms a second pressure relief space through the collapsed part 624 thereon. Figure 5The second pressure relief left inlet D1 and the second pressure relief left and right inlets D2 shown, the first gap, the second gap, the first pressure relief space and the second pressure relief space form a complete pressure relief chamber (not shown in the figure). Since the first gap, the second gap, the first pressure relief space and the second pressure relief space form a large area projection on the surface of the washing and rubbing roller 1, when pressure relief is required, the air outlet of the pressure relief connector 28 is connected to the pressure relief chamber through a solenoid valve (not shown in the figure), which can be absorbed by the washing and rubbing roller 1 more quickly, thereby avoiding the phenomenon of air bubbles when the pressure is released to the washing and rubbing roller 1.
[0091] As a further improved implementation method, such as Figure 3 , Figure 4 As shown, the first fixing member 62 is an integral structure, which can further simplify the internal structure of the cleaning mechanism 2 and reduce the processing and manufacturing difficulty of the cleaning mechanism.
[0092] As a further improved implementation, the first fastener 62 can also be disassembled into a modular structure that can be assembled, which can further reduce the complexity of individual parts, but the assembly process is slightly increased.
[0093] As a further improved implementation method, such as Figure 3 As shown, the air outlet of the pressure relief connector 28 is directly connected to the pressure relief chamber, which can further simplify the internal structure of the cleaning mechanism 2 and reduce the processing and manufacturing difficulty of the cleaning mechanism.
[0094] As a further improved implementation method, as needed, such as Figure 8 As shown, the cleaning mechanism 2 also includes a fourth interference portion 631 formed on the surface of the washing roller 1 by the second fixing member 63. This fourth interference portion 631 can be a strip-shaped structure. The fourth interference portion 631 can be disposed on the first fixing member 62 or on other components. For example, when the first fixing member 62 needs to be fixed by the second fixing member 63, the fourth interference portion 631 can be disposed on the second fixing member 63. The third interference portion 621, the fourth interference portion 631, the water guiding portion 611, the second interference portion 6111, the first pressure relief space, the second pressure relief space, and the guide strip 612 form a completely closed pressure relief chamber, avoiding the appearance of bubbles on the surface of the washing roller 1 when the pressure is large.
[0095] like Figure 8As shown, the fourth interference portion 631 includes an outer side of the third interference portion (not shown in the figure) located on the outer side when viewed from the direction of the clockwise rotating washing roller 1, and an inner concave side of the third interference portion (not shown in the figure) located on the inner side when viewed from the direction of the clockwise rotating washing roller 1. Since the fourth interference portion 631 is located closest to the vehicle surface, when particulate debris is present, it can be separated from the surface of the washing roller 1 by the action of the outer side of the fourth interference portion, and accumulate on the inner concave side of the fourth interference portion. When the fourth interference portion 631 is located on the second fixing member 63, it can be easily removed for cleaning.
[0096] As a further improved implementation, the fourth interference part 631 can be disposed on other components as needed, and can be easily removed for cleaning.
[0097] like Figure 3 , Figure 4 As shown, the sealing part 22 forms a V-shaped groove (not shown in the figure) between the side opposite to the first interference part 20 and the fixing part 21. In order to improve strength and reduce weight, a rib 23 is provided between the sealing part 22 and the fixing part 21 on the side opposite to the first interference part 20.
[0098] like Figures 2 to 4 As shown, the cleaning mechanism 2 further includes a water-guiding structure 61 that is connected to the sealing part 22 and forms a watertight contact with the surface of the washing and rubbing roller 1. The water-guiding structure 61 includes a water-guiding part 611 that contacts the surface of the washing and rubbing roller 1 and a water storage part 614 connected to the water-guiding part, as well as an extension part 610 that has a pressure relief chamber between it and the surface of the washing and rubbing roller 1. The pressure relief chamber is connected to the air outlet of the pressure relief connector 28.
[0099] As a further improved implementation method, as needed, such as Figure 3 , Figure 4 As shown, a pressure-relieving chamber 620 is provided between the pressure relief chamber and the pressure chamber (not shown in the attached figure, but may be one of the inner cavities of the container for collecting, filtering, and outputting return water from the washing and wiping vehicle device). A pressure relief vent 6201 is provided between the pressure-relieving chamber 620 and the first pressure relief space. The surface area of the washing and wiping roller 1 forming part of the pressure relief chamber is larger than the surface area of the washing and wiping roller 1 forming part of the sealed liquid exchange zone A. Because the surface area of the squeezing washing and wiping roller 1 is smaller, the air generated is limited, while the area of the pressure relief chamber is larger, making pressure relief easier.
[0100] like Figure 2 , Figure 3As shown, the water inlet 611 extends into the sealed liquid exchange zone A. The portion of the water inlet 611 near the sealed liquid exchange zone A contacts the surface 1 of the washing roller, while a gap is provided between the portion of the water inlet 611 away from the sealed liquid exchange zone A and the surface of the washing roller 1. The sealed liquid exchange zone has an arc-shaped cross-section along its length perpendicular to the horizontal direction, and this arc shape includes a C-shape.
[0101] As a further improved implementation method, as needed, such as Figure 4 , Figure 7 As shown, the first interference part 20 has protrusions 201 at both ends. The extrusion force formed by the protrusions 201 on the surface of the washing roller 1 is less than or equal to that of the first interference part 20. The protrusions 201 can prevent the liquid on both sides of the washing roller 1 from seeping outward when squeezing water.
[0102] As a further improved implementation method, as needed, such as Figure 4 , Figure 7 As shown, the protrusion 201 is not on the same straight line as the first interference portion 20 in the length direction. It is best to extend into the sealed liquid exchange zone A so that the squeezed liquid can be gathered in the middle and prevent leakage from both sides.
[0103] like Figure 3 , Figure 8 As shown, the straight portion 616 of the water-guiding structure 61 has several through holes (not shown in the figure), and the top of the first fixing member 62 has several nut posts (not shown in the figure). The nut posts mate with the through holes. Then, by driving the fastening screws down through the mounting portion 24 of the cleaning structure 2 through the top of the straight portion 616 of the water-guiding structure 61, the fastening screws are driven into the nut posts on the top of the first fixing member 62, thereby realizing the installation of the main component of the cleaning mechanism 2. Furthermore, the second fixing member 63 can be detachably connected to the first fixing member 62 by an interference fit through an opening at the bottom of the first fixing member 62 (not shown in the figure). To facilitate disassembly and assembly, a gap (not shown in the figure) is left between the second fixing member 63 and the first fixing member 62 so that the compressed air during the interference fit insertion process still has some space, improving the convenience of disassembly and assembly.
[0104] like Figure 5 , Figure 7As shown, the clamping part includes an upper clamping end 41 and a lower clamping end 42. The machine body 4 extends to both the upper and lower ends to form the upper clamping end 41 and the lower clamping end 42. The upper cover 25 covers the machine body 4 to cover the internal structure of the cleaning mechanism 2. This improves the maintainability of the car wiping device and makes the exterior of the car wiping device look more complete and beautiful. The clamping part includes an upper clamping end 41 and a lower clamping end 42, which elastically clamp the washing and wiping roller 1. At the same time, the internal mounting holes and related water channels facilitate the rotation of the washing and wiping roller 1 while providing a continuous supply of water to clean the water-absorbing layer 11 of the washing and wiping roller 1. The clamping upper end 41 includes a clamping upper end shell 411 and a clamping upper end bottom shell 412. The clamping upper end bottom shell 412 is integrally formed with the machine body 4. The clamping upper end shell 411 is detachably fastened or slidably covered onto the clamping upper end bottom shell 412. The clamping upper end bottom shell 412 is provided with a washing and wiping roller engaging hole (not shown in the attached figure) for engaging the end button (not shown in the attached figure) of the washing and wiping roller 1. The inner side of the clamping upper end bottom shell 412 that engages the washing and wiping roller 1 is provided with a washing and wiping roller sliding step (not shown in the attached figure) to facilitate the sliding out of the washing and wiping roller 1.
[0105] As a further improved implementation method, as needed, such as Figure 5 , Figure 7 As shown, the clamping lower end 42 includes a clamping lower end face shell 421 and a clamping lower end bottom shell 422. The clamping lower end bottom shell 422 is integrally formed with the machine body 4. The clamping lower end face shell 421 is detachably fastened or slidably covered onto the clamping lower end bottom shell 422. The clamping lower end bottom shell 422 is provided with a washing and wiping roller engaging hole for engaging the end button (not shown in the attached figure) of the washing and wiping roller 1. The inner side of the clamping lower end bottom shell 422 engaging the washing and wiping roller 1 is provided with a washing and wiping roller sliding step to facilitate the sliding out of the washing and wiping roller 1.
[0106] As a further improved implementation method, as needed, such as Figure 2 , Figure 3 , Figure 4 As shown, a pressure relief connector 28 for connecting a pressure relief pipeline (not shown in the attached figure) is provided in the middle of the side of the first fixing member 62 facing away from the washing roller 1. The pressure relief connector 28 is provided with an air outlet. When it is necessary to release the pressure accumulated inside the car washing device, the pressure relief pipeline discharges air through the air outlet of the pressure relief connector 28 to the pressure relief chamber. The pressure relief chamber then further releases the accumulated pressure, thereby realizing the release of the pressure accumulated inside the car washing device.
[0107] As a further improved implementation, as needed, in the above embodiments, the cross-section of the first interference part 20 can be triangular, and the top of the three angles is a smooth arc structure. This can reduce the resistance generated by the large contact surface during interference, and at the same time reduce the frictional wear on the washing roller 1, and extend its service life.
[0108] As a further improved implementation method, as needed, such as Figure 6 As shown, the first fixing member 62 extends radially upward along the outer surface of the washing and wiping roller 1 from both ends of the third interference portion 621, forming A-shaped water-collecting protrusions (not shown in the figure). The first fixing member 62 continues to extend towards both ends at the water-collecting protrusions, while its interference fit with the outer surface of the washing and wiping roller 1 gradually decreases to zero until a gap is left between them, forming a collapsed section 624. The first fixing member 62 has a slight interference fit with the outer surface of the washing and wiping roller 1 at the third interference portion 621 and the two water-collecting protrusions, forming a fine particulate waste collection space G1 at the lower part of the second gap (i.e., the aforementioned first pressure relief groove G1 has the function of collecting fine particulate waste). On one hand, the outer side of the third interference section 621 (not shown in the attached figure) is located close to the vehicle surface. When particulate waste is present and has passed through the second pressure relief groove G2, it can be separated from the surface of the scrubbing roller 1 by the action of the outer side of the third interference section (not shown in the attached figure). When the particulate waste is adhered to the highest point of the third interference section 621 by the adhesive action of the water-absorbing layer 11 on the surface of the wetted scrubbing roller 1, under the impact of the vented air released through the air outlet, and accompanied by the sewage squeezed out by the first interference section 20 wetting the water-absorbing layer 11 again, the particulate waste forms a deposit on the concave side of the third interference section. When the third interference section 621 is located on the second fixing member 63, it can be easily removed, thereby facilitating the cleaning of the particulate waste deposited in the fine particulate waste collection space G1. On the other hand, when the vented air is released into the pressure relief chamber through the air outlet, and encounters the fine particulate waste collection space G1 which is full of particulate waste or sewage, the gap between the collapsed section 624 of the first fixing member 62 and the water-absorbing layer 11 on the surface of the washing roller 1 forms a second pressure relief left inlet D1 and a second pressure relief left and right inlet D2. After encountering the obstruction of the fine particulate waste collection space G1, the vented air will be discharged from the second pressure relief left inlet D1 and the second pressure relief left and right inlet D2 into the second pressure relief space, thereby realizing the secondary release of the pressure accumulated inside the car wiping device.
[0109] 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 washing head for use in a vehicle washing device, characterized in that, include: The scrubbing roller achieves continuous scrubbing by continuously rolling on the surface to be cleaned; The cleaning mechanism continuously cleans and maintains the surface humidity of the washing and wiping rollers, and includes a sealed liquid exchange zone. The machine body is equipped with a removable cleaning fluid container. The pump, installed on the machine body, delivers the cleaning fluid from the cleaning fluid holding mechanism to the cleaning mechanism. The pressure relief mechanism releases the air pressure in the cleaning fluid container during the cleaning process through the exhaust pipe; The pump's inlet is connected to the outlet of the cleaning fluid holding mechanism via a pipeline. The pump's outlet is connected to the inlet of the sealed liquid exchange zone via a pipeline. The outlet of the sealed liquid exchange zone is connected to the return port of the cleaning fluid holding mechanism via a pipeline. The cleaning fluid holding mechanism is equipped with an exhaust port, which is connected to a pressure relief connector via an exhaust pipe. During the cleaning process, the air pressure of the cleaning fluid holding mechanism is released through the pressure relief mechanism and finally released onto the surface of the scrubbing roller along with water and air through the pressure relief connector.
2. The washing head as described in claim 1, characterized in that, The washing head includes two clamping parts extending from the machine body to both ends, a washing roller elastically clamped by the two clamping parts, a cleaning mechanism connecting the two clamping parts and cleaning the washing roller, and an upper cover covering the cleaning mechanism. The surface of the washing roller is provided with a water-absorbing layer. Preferably, the two clamping parts include an upper clamping end and a lower clamping end, and the upper clamping end and the lower clamping end are provided with water supply channels inside. The upper clamping end and / or the lower clamping end are provided with clamping holes for clamping the washing and wiping roller and sliding steps to facilitate the sliding out of the washing and wiping roller.
3. The washing head according to claim 1, characterized in that, The cleaning mechanism includes a first interference part that forms a compression with the surface of the washing and wiping roller. The first interference part is provided with a fixing part and a sealing part on both sides of the circumferential direction of the washing and wiping roller surface. The sealing part forms a sealed liquid exchange zone on the surface of the washing and wiping roller. Preferably, the sealing part forms a V-shaped groove between the sealing part and the fixing part on the side opposite to the first interference part, and a rib is provided between the sealing part and the fixing part on the side opposite to the first interference part; Preferably, the cleaning mechanism further includes a water-guiding structure that is connected to the sealing part and contacts the surface of the scrubbing roller to form a watertight contact; Preferably, the water-guiding structure includes a water-guiding part that contacts the surface of the washing and rubbing roller and a water-storing part connected to the contact part. The water-guiding part extends into the sealed liquid exchange zone. The portion of the water-guiding part near the sealed liquid exchange zone contacts the surface of the washing and rubbing roller, and a gap is provided between the portion of the water-guiding part away from the sealed liquid exchange zone and the surface of the washing and rubbing roller. Preferably, the water-guiding section includes a second interference section that interferes with the surface of the washing and rubbing roller, and a pressure relief gap is provided between the water-guiding structure after the second interference section and the surface of the washing and rubbing roller; Preferably, the water-guiding structure has guide strips at both ends that partially contact the surface of the washing and wiping roller, and the inner side of the guide strips has an inclined surface that locally presses the surface of the washing and wiping roller. The inclined surface has an arc-shaped structure.
4. The washing head as described in claim 3, characterized in that, The first interference section has arc-shaped protrusions that are more radially oriented towards the washing and rubbing roller at both ends near the cleaning mechanism along the length direction of the washing and rubbing roller. The closer the arc-shaped protrusions are to both ends of the housing, the greater the interference with the washing and rubbing roller. Preferably, the arc-shaped protrusion deviates from the axial direction of the washing and rubbing roller, and the arc gradually changes in the direction of rotation of the washing and rubbing roller, either in the same direction or against the direction of rotation.
5. The washing head as described in claim 3, characterized in that, The pressure relief mechanism includes: The first fixing part is installed below the cleaning mechanism and includes an upper part of an arc-shaped structure that matches the surface of the scrubbing roller and a lower part that forms a pressure relief structure. A pressure relief connector is installed in the middle of the first fixing part; Preferably, the cleaning mechanism further includes a water-guiding structure that is connected to the sealing part and contacts the surface of the scrubbing roller to form a watertight contact.
6. The washing head as described in claim 5, characterized in that, The sealing part extends outward to a mounting part with a flat mounting surface for fixing the water-guiding structure. The sealing part and the water-guiding structure cooperate to form a sealed liquid exchange area on the surface of the washing and wiping roller. The top cover can be snapped into the snap-fit of the fixing part. Preferably, the cleaning mechanism further includes a second interference section that slightly interferes with the scrubbing roller to guide the wastewater away; Preferably, the water-guiding structure includes a water-guiding part that contacts the surface of the washing and rubbing roller, a water-storing part connected to the water-guiding part, a guide strip that causes interference between the two ends of the washing and rubbing roller, and an extension part with a first gap between it and the surface of the washing and rubbing roller. The circumferential end of the water inlet section is provided with a second interference section that forms a water seal with the surface of the washing and rubbing roller. At both ends of the length direction of the water inlet section, there are guide strips that cause interference between the surfaces of the two ends of the washing and rubbing roller. The guide strips are in partial contact with the surface of the washing and rubbing roller. The inner side of the guide strips is provided with an inclined surface, which is an arc-shaped structure.
7. The washing head as described in claim 5, characterized in that, The guide bar has protrusions extending towards the sealed liquid exchange area. These protrusions, together with the first interference part, the second interference part, the water storage part, and the sealing part on both sides of the sealed liquid exchange area, enclose the surface of the washing and wiping roller to form a sealed sealed liquid exchange area. The water storage section, water intake section, guide strip, and sealing section cooperate with the surface of the washing and scrubbing roller to form a sealed liquid exchange zone. The extension section and the water intake section are located on both sides of the water storage section. The water storage section and the sealing section are fixed by a waterproof connection. Preferably, the second interference section adopts a strip-shaped structure; Preferably, the water inlet extends to the inner wall of the upper and lower clamping ends of the two clamping parts that extend from the body to both ends.
8. The washing head as described in claim 5, characterized in that, The cleaning mechanism also includes a first fixing member that cooperates with the sealing part to fix the water-guiding structure. The upper half of the surface of the first fixing member near the washing and rubbing roller is provided with an arc-shaped structure that matches the surface of the washing and rubbing roller. There is a second gap between the arc-shaped structure and the surface of the washing and rubbing roller that communicates with the first gap. The lower half of the surface of the first fixing member near the washing and rubbing roller is provided with a third interference part and a fourth interference part that abut against the surface of the washing and rubbing roller. Preferably, the lower half of the surface of the first fixing member near the washing and wiping roller is provided with an arc surface that matches the surface of the washing and wiping roller. The arc surface is provided with a first pressure relief groove that is further recessed inward from the surface of the washing and wiping roller, with one side boundary being a third interference portion and a second pressure relief groove with one side boundary being a third interference portion and the other side boundary being a fourth interference portion. Preferably, the width of the first pressure relief groove pointing to the inner wall of the two clamping parts in the axial dimension of the washing roller is smaller than that of the second pressure relief groove; Preferably, at both ends of the first pressure relief groove, the first pressure relief space formed with the surface of the washing and rubbing roller is obliquely narrowed upward to be flush with the arc surface. Along the direction of the first pressure relief groove pointing towards the inner wall of the two clamping parts, the arc surface is provided with a collapsed part that is obliquely downward further away from the surface of the washing and rubbing roller. The second pressure relief groove extends along the axial direction of the washing and rubbing roller to the inner wall of the two clamping parts. The second pressure relief groove, the inner wall of the two clamping parts, and the surface of the washing and rubbing roller partially surround the second pressure relief space. Preferably, the first pressure relief groove is inclined upwards towards both ends of the washing and rubbing roller and terminates on the inclined end face that is integrated with the arc surface. The fusion point of the arc surface continues to collapse in the direction away from the washing and rubbing roller surface to form a collapsed part. During operation, the pressure to be released can continue to be released along the second pressure relief inlet formed by the collapsed part after passing the end of the first pressure relief groove. Preferably, the second pressure relief groove extends to both ends of the washing and rubbing roller, and the second pressure relief inlet is connected to the second pressure relief groove; Preferably, the arc surface forms a second pressure relief left inlet and a second pressure relief right inlet through its collapsed portion, and the first gap, the second gap, the first pressure relief space, and the second pressure relief space form a complete pressure relief chamber; when pressure relief is required, the air outlet of the pressure relief connector is connected to the pressure relief chamber through a solenoid valve.
9. The washing head as described in any one of claims 8, characterized in that, The fourth interference part is detachably mounted on the first fixing member; Preferably, the fourth interference part is detachably mounted on the second fixing member.
10. The washing head as described in any one of claims 4-8, characterized in that, The sealing part forms a V-shaped groove between the sealing part and the fixing part on the side opposite to the first interference part, and a rib is provided between the sealing part and the fixing part on the side opposite to the first interference part.
11. The washing head as described in claim 8, characterized in that, A pressure relief chamber is provided between the pressure relief chamber and the inner cavity of the container for collecting, filtering and outputting the return water of the washing vehicle device, and a pressure relief vent is provided between the pressure relief chamber and the first pressure relief space.
12. The washing head as described in any one of claims 1-8, characterized in that, The sealed liquid exchange zone has an arc-shaped cross-section along its length perpendicular to the direction of its length. Preferably, the first interference portion has protrusions at both ends, and the pressure formed by the protrusions on the surface of the washing roller is greater than that of the first interference portion; Preferably, the protrusion is not on the same straight line as the first interference portion in the length direction, and the protrusion extends into the sealed liquid exchange zone; Preferably, the cross-section of the first interference part is triangular, and the top of the three angles is a smooth arc-shaped structure.
13. The washing head as described in claim 8, characterized in that, The first fixing member extends along the length direction from both ends of the third interference section and simultaneously extends radially upward along the outer surface of the washing and scrubbing roller in an A-shape to collect water. The first fixing member continues to extend to both ends at the water-collecting protrusions, while the interference with the outer surface of the washing and scrubbing roller gradually decreases to zero until a gap is left between them, forming a collapsed section. The first fixing member has a slight interference fit with the outer surface of the washing and scrubbing roller at the third interference section and the two water-collecting protrusions, forming a fine particulate waste collection space for holding fine particulate waste in the lower part of the second gap.