Anti-corrosion charging structure and cleaning equipment

Abstract

The invention provides an anti-corrosion charging structure and cleaning equipment, and belongs to the technical field of cleaning equipment, and the anti-corrosion charging structure comprises a charging seat which comprises a charging seat main body and a first charging part arranged on the charging seat main body; the charging plug comprises a plug main body and a second charging part arranged on the plug main body; wherein the first charging part or / and the second charging part is fixedly provided with a water removal structure, and in the butt joint process of the second charging part and the first charging part, the water removal structure at least partially removes water on the second charging part or / and the first charging part. According to the charging structure, the synchronous operation design of moisture removal and electric connection is realized, so that the durability and the anti-corrosion performance of the charging structure are improved.

Description

Technical Field

[0001] This application relates to the field of cleaning equipment technology, and in particular to a corrosion-resistant charging structure and cleaning equipment. Background Technology

[0002] With the widespread use of smart devices, such as intelligent cleaning robots, power is typically supplied through a connection between a charging dock and a charging plug. However, when these devices are in humid or underwater environments, the charging ports are exposed to external moisture or residual water, making them highly susceptible to problems such as electro-corrosion, poor conductivity, and sealing failure, which can affect long-term stable operation.

[0003] Some improved solutions attempt to remove moisture through external drying devices or independent drainage structures to reduce residual moisture. However, such solutions are often complex and bulky, making them unsuitable for compact devices. Furthermore, independent drying structures are costly, complex to maintain, and cannot guarantee real-time moisture removal during insertion and removal, failing to meet the corrosion resistance requirements of high-frequency charging environments. Summary of the Invention

[0004] To overcome the problems existing in related technologies, this specification provides a corrosion-resistant charging structure and cleaning device that achieves a synchronous design of moisture removal and electrical connection, thereby improving the durability and corrosion resistance of the charging structure.

[0005] According to a first aspect of this application, a corrosion-resistant charging structure is provided, comprising:

[0006] A charging dock includes a charging dock body and a first charging part disposed on the charging dock body;

[0007] A charging plug, comprising a plug body and a second charging portion disposed on the plug body;

[0008] A water removal structure is fixedly installed on the first charging unit and / or the second charging unit. During the docking process between the second charging unit and the first charging unit, the water removal structure removes at least part of the water on the second charging unit and / or the first charging unit.

[0009] The corrosion-resistant charging structure provided in this application uses a water-removing structure fixedly installed on the first or second charging section. This allows the water-removing structure to act simultaneously on the charging interface area during the connection process, wiping away or draining water stains on the charging contact surface, thereby effectively reducing moisture residue. This design achieves water removal during the connection process of the first and second charging sections without adding external drying components, ensuring the electrical connection area remains dry after connection and significantly reducing the risk of short circuits, leakage, and electrochemical corrosion caused by water.

[0010] This structure allows the dehydration and docking processes to occur simultaneously, achieving dehydration without additional steps. The overall structure is simple, highly reliable, and suitable for charging cleaning equipment in humid or even underwater environments. By mechanically removing moisture during the insertion and removal process, this application achieves a synchronized design between moisture removal and docking, thereby improving the durability and corrosion resistance of the charging structure.

[0011] In some exemplary embodiments of this application, the first charging unit includes a charging pin;

[0012] The second charging part has a charging hole, and the charging hole is used for inserting the charging pin;

[0013] The water removal structure includes a wiping part disposed on the plug body. During the docking process between the second charging part and the first charging part, the wiping part removes at least a portion of the water on the charging pins.

[0014] In this type of embodiment, a wiping section is provided so that water stains on the surface of the charging pin can be physically wiped away during the insertion of the charging pin into the charging port. This design utilizes the relative motion during docking to remove the water film adhering to the surface of the charging pin without affecting the insertion force, thereby forming a dry electrical contact interface during docking and preventing the formation of an electrolytic path between the charging pin and the water film. With this structure, the water removal and docking actions are completed simultaneously, achieving self-cleaning of the contacts and stable conductivity without the need for external auxiliary devices, effectively improving waterproof and corrosion-resistant performance and charging reliability.

[0015] In some exemplary embodiments of this application, the second charging part includes a base and a power supply structure. The base protrudes from one side of the plug body, and a mounting hole is formed on the base. The power supply structure is disposed in the mounting hole, and the charging hole is formed on the power supply structure.

[0016] The erasing part is disposed in the mounting hole, and at least a portion of the erasing part is located on the side of the power supply structure away from the substrate.

[0017] In this type of embodiment, the power supply structure and the wiping part are arranged together within the mounting hole, with at least a portion of the wiping part located on the side of the power supply structure away from the substrate. This structure allows the wiping part to contact the charging pin during the initial docking stage, thereby continuously removing water stains during insertion and effectively preventing moisture from entering the electrical connection area during the water removal process, ensuring that the power supply structure is in a dry environment. This arrangement optimizes the water removal path and makes rational use of space, improving water removal efficiency and the stability of the electrical connection.

[0018] In some exemplary embodiments of this application, the erasing part is provided with a guide hole, and the wall of the guide hole is provided with a first protrusion. The first protrusion is in interference fit with the charging pin during the docking of the second charging part and the first charging part.

[0019] In this type of embodiment, a first protrusion is provided on the wall of the guide hole of the wiping part, so that the first protrusion and the outer periphery of the charging pin form an interference fit during the insertion of the charging pin. This structure utilizes the elastic deformation characteristics of the first protrusion to generate continuous contact pressure when the charging pin is inserted, wiping away water stains on the surface of the charging pin at multiple points, thereby significantly enhancing the water removal effect. While wiping away moisture, the first protrusion also serves as a guide and seal, preventing external moisture from entering the power supply area during the connection process. Through this design, water removal, guiding positioning, and sealing protection are achieved synergistically in the same structure, making the charging process smoother and more reliable, and further improving the overall waterproof and corrosion-resistant performance and service life.

[0020] In some exemplary embodiments of this application, the charging pin includes a head, a tail, and an electrical connection segment located between the head and the tail; the tail is connected to the charging base body;

[0021] The water removal structure also includes a head protective sleeve, which wraps around the head and is an insulating structure; or / and

[0022] The water removal structure also includes a tail protective sleeve, which is sleeved around the tail and extends at least to the connection between the tail and the charging base body.

[0023] The tail protective sleeve has an insulating structure.

[0024] In this type of embodiment, by providing a head protective sleeve and a tail protective sleeve at the head and tail of the charging pin respectively, both ends of the charging pin have independent insulating protective structures. The head protective sleeve wraps around the head of the charging pin, effectively preventing external moisture from directly wetting the conductive surface at the front end of the charging pin; the tail protective sleeve is fitted around the outer perimeter of the tail of the charging pin and extends at least to the connection between the tail and the charging base body, thereby preventing moisture from seeping into the interior of the charging base body along the connection gap. This structure creates a double insulating isolation zone between the head and tail, further preventing moisture from entering the electrical connection section after the water-removing structure has wiped away the moisture.

[0025] Through the above design, the conductive area of ​​the charging pin is physically isolated from the potentially water-containing area, which significantly reduces the risk of electrochemical corrosion and short circuit, thereby improving the corrosion resistance and electrical connection stability of the charging structure.

[0026] In some exemplary embodiments of this application, after the second charging unit is docked with the first charging unit, the erasing unit is at least partially fitted around the outer periphery of the tail protective sleeve and at least partially in contact with the outer surface of the tail protective sleeve.

[0027] In this type of embodiment, after the second charging unit is docked with the first charging unit, the wiping part is at least partially fitted around the outer periphery of the tail protective sleeve and at least partially in contact with the outer surface of the tail protective sleeve, so that water removal and sealing are achieved synergistically on the same interface. During the charging docking process, this structure not only wipes water stains on the surface of the charging pin to the outer area of ​​the tail protective sleeve and drains them outward when the charging pin is inserted, but also forms a tight seal between the tail protective sleeve and the wiping part, thereby effectively preventing external moisture from entering the charging pin area through the insertion gap. Through the fitting and cooperation of the wiping part and the tail protective sleeve, a continuous protective effect of "wiping-drainage-isolation" is achieved, keeping the electrical connection interface dry at all times, significantly improving the waterproof and corrosion-resistant performance of the charging structure and the long-term stability of the electrical connection.

[0028] In some exemplary embodiments of this application, the water removal structure further includes:

[0029] A water-proof sleeve is provided on the periphery of the head. The water-proof sleeve includes a main body that is sleeved on the periphery of the head protective sleeve and a second protrusion that protrudes from the periphery of the main body. The second protrusion is used to interfere with the charging port.

[0030] In this type of embodiment, by including a main body fitted around the periphery of the head and a second protrusion protruding from the periphery of the main body, the water-proof sleeve can structurally form a tight fit with the head protective sleeve and functionally form an interference fit with the charging port. During the insertion of the charging pin into the charging port, the second protrusion can elastically contact the inner wall of the charging port, thereby achieving further wiping and sealing of moisture. This effectively prevents moisture from flowing axially along the charging pin to the electrical connection section, thus cutting off the water flow path through the water-proof sleeve, further reducing the possibility of moisture intrusion into the conductive area during charging. The water-proof sleeve at the head position forms a stable water barrier between the front end and middle section of the charging pin, keeping the electrical connection section dry for a long time.

[0031] In some exemplary embodiments of this application, the first charging unit further includes a positive docking cavity and a negative docking cavity formed on the charging base body, and the charging pin is provided in both the positive docking cavity and the negative docking cavity;

[0032] The substrate includes positive and negative substrates spaced apart, the power supply structure includes a positive power supply structure and a negative power supply structure, and the charging port includes a positive charging port and a negative charging port.

[0033] The positive substrate is provided with the positive power supply structure, and the positive charging hole is opened in the positive power supply structure; the negative substrate is provided with the negative power supply structure, and the negative charging hole is opened in the negative power supply structure.

[0034] The charging pin includes a positive charging pin and a negative charging pin;

[0035] During the docking process between the positive docking cavity and the positive substrate, the positive charging pin can be inserted into the positive charging hole, and the positive power supply structure can form an electrical connection with the positive charging pin;

[0036] During the docking process between the negative docking cavity and the negative substrate, the negative charging pin can be inserted into the negative charging hole, and the negative power supply structure can form an electrical connection with the negative charging pin;

[0037] The positive matrix and the negative matrix have different shapes and / or sizes.

[0038] In this type of embodiment, by providing a positive and negative docking cavity on the first charging section and correspondingly providing a positive and negative substrate on the second charging section, the two sets of structures achieve independent positive and negative electrode connections. This structure, by spatially separating the positive and negative electrode paths, effectively avoids the risk of short circuits caused by water stains or conductive liquid films. During docking, the positive charging pin and positive charging hole, and the negative charging pin and negative charging hole, are independently inserted and electrically connected, resulting in a clear charging path and stable conductivity. Simultaneously, the difference in shape or size between the positive and negative substrates enables foolproof positioning, preventing mis-insertion and reverse connection, thereby improving the safety and reliability of the charging operation. Through the above structural layout, the electrical connection between the positive and negative electrodes is more robust, and combined with the aforementioned water-repellent and waterproof structures, it further ensures the safety and long-term stability of the electrical connection in humid or underwater environments.

[0039] In some exemplary embodiments of this application, the charging plug is provided with a drainage groove;

[0040] During the docking process between the second charging unit and the first charging unit, the water removed by the water removal structure from the first charging unit and / or the second charging unit can be discharged through the drainage channel.

[0041] In this type of embodiment, by creating a drainage groove on the charging plug, moisture inside the structure can be discharged along the drainage groove during the docking process between the first charging part and the second charging part, thereby preventing moisture from remaining inside the charging structure. This design allows moisture to be naturally discharged during insertion and removal, preventing water accumulation or backflow at the docking interface and effectively reducing the risk of water immersion in the electrical connection area. By providing a drainage groove on the charging plug, an active drainage function can be achieved without adding external components, allowing the water removal structure and the drainage groove to work together to further enhance the overall waterproof and corrosion-resistant capabilities.

[0042] In some exemplary embodiments of this application, the drainage channel includes a first drainage channel and a second drainage channel that are interconnected. The first drainage channel is formed on the surface of the substrate and is connected to the charging port. The second drainage channel is formed on the side surface of the plug body facing the second charging part.

[0043] When the first charging unit and the second charging unit are connected, the water in the charging hole is discharged sequentially through the first drainage channel and the second drainage channel.

[0044] In this type of embodiment, by including a first drainage channel and a second drainage channel that are interconnected, water can be smoothly discharged along a predetermined path during the docking process. The first drainage channel is formed on the surface of the substrate and communicates with the charging port, guiding residual water in the charging port to the outside of the substrate; the second drainage channel is formed on the side surface of the plug body facing the second charging part, further guiding the discharged water to the outside. This structure achieves continuous flow guidance from the inside to the outside through a two-stage drainage path, allowing water inside the charging structure to be discharged in a timely manner and preventing water accumulation. The cooperation of the first and second drainage channels forms an efficient drainage path, which not only improves drainage efficiency but also ensures a dry state inside the charging structure, thereby further enhancing waterproof and corrosion-resistant performance and the stability of the electrical connection.

[0045] In some exemplary embodiments of this application, the mounting hole includes a first hole segment and a second hole segment that are interconnected, wherein the second hole segment is located on the side of the first hole segment closer to the plug body;

[0046] The power supply structure and the erasure part are located in the second hole section;

[0047] The first hole is a tapered hole, which is used to guide the charging pin into the charging hole.

[0048] In this type of embodiment, the first segment forms a tapered structure to guide the insertion of the charging pin. This structure allows the charging pin to be smoothly positioned and inserted during insertion, avoiding structural damage caused by misalignment or scratching. The second segment houses the power supply structure and the wiping section, allowing them to be spatially coordinated and simultaneously completing electrical connection and water removal during insertion. The segmented hole structure not only improves the guiding accuracy and docking stability of the charging pin insertion and removal but also achieves integrated coordination of electrical connection and water removal functions. The overall structure is more compact and has a high degree of functional integration, thereby further improving the reliability and service life of the charging structure.

[0049] In some exemplary embodiments of this application, the power supply structure has a circumferential slot, the slot is located at one end of the power supply structure away from the plug body, and the erasing part is at least partially engaged in the slot.

[0050] In this type of embodiment, a circumferential slot is created in the power supply structure, and at least part of the wiping part is engaged within this slot, creating a stable positioning and fixed fit between the wiping part and the power supply structure. This structure prevents the wiping part from shifting or falling off during repeated insertion and removal or water flushing, thus ensuring its positional stability and reliable function during the water removal process. The circumferential slot precisely constrains the wiping part during installation, improving assembly accuracy and ensuring it maintains a predetermined posture during insertion and removal, achieving a continuous and uniform wiping effect. This design guarantees the long-term durability and functional stability of the water removal structure, further enhancing the waterproof and corrosion-resistant performance and service life of the charging structure.

[0051] In some exemplary embodiments of this application, a waterproof pad is provided inside the charging hole, and the waterproof pad at least covers the bottom of the charging hole. After the second charging part is docked with the first charging part, the second protrusion is interference-fitted with the waterproof pad.

[0052] In this type of embodiment, by providing a waterproof pad inside the charging hole, ensuring that the waterproof pad at least covers the bottom area of ​​the charging hole, the waterproof pad can form an interference fit with the second protrusion after the second charging part is connected to the first charging part, thereby physically creating a sealed isolation. This structure can further protect against the small amount of residual moisture at the bottom of the charging hole even after the water removal structure has wiped and drained the moisture from the surface of the first or second charging part.

[0053] Specifically, after the second charging unit is connected to the first charging unit, a closed space is formed between the waterproof pad and the bottom of the charging hole, thereby confining the residual water to the non-conductive area at the bottom of the charging hole. This water cannot flow to the central electrical connection area where the power supply structure is located, thus effectively preventing the electrical contact area from being corroded or electrolyzed by liquid.

[0054] According to a second aspect of this application, a cleaning device is provided, including a charging device, a cleaning robot, and a corrosion-resistant charging structure as described in the first aspect, wherein the charging base is disposed on the cleaning robot, and the charging plug is disposed on the charging device.

[0055] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this specification. Attached Figure Description

[0056] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this specification and, together with the description, serve to explain the principles of this specification.

[0057] Figure 1 This is an exploded view of the corrosion-resistant charging structure in an exemplary embodiment of this application.

[0058] Figure 2 This is an exploded structural diagram of the charging plug in an exemplary embodiment of this application.

[0059] Figure 3 This is a schematic diagram of the structure of the charging plug in an exemplary embodiment of this application.

[0060] Figure 4 This is a schematic diagram of the charging dock in an exemplary embodiment of this application.

[0061] Figure 5 This is an exploded schematic diagram of the charging pin and part of the dewatering structure in an exemplary embodiment of this application.

[0062] Figure 6 This is a schematic diagram of the structure of the charging needle wrapped around the head protective cover and the waterproof cover in an exemplary embodiment of this application.

[0063] Figure 7 This is a schematic diagram of the structure of the water-proof sleeve in an exemplary embodiment of this application.

[0064] Figure 8 This is an exploded cross-sectional view of the corrosion-resistant charging structure in an exemplary embodiment of this application.

[0065] Figure 9 This is a cross-sectional view of the charging plug portion structure in an exemplary embodiment of this application.

[0066] Figure 10 This is a cross-sectional view of the corrosion-resistant charging structure in an exemplary embodiment of this application.

[0067] Figure 11 This is a cross-sectional view of the erasing section in an exemplary embodiment of this application.

[0068] Figure 12 yes Figure 10 Enlarged view of part A in the middle.

[0069] Figure 13 This is a schematic diagram of the waterproof pad installation structure in an exemplary embodiment of this application.

[0070] Explanation of reference numerals in the attached figures

[0071] 100 - Charging base; 110 - Charging base body; 120 - First charging section; 121 - Charging pin; 121a - Positive charging pin; 121b - Negative charging pin; 1211 - Head; 1212 - Tail; 1213 - Electrical connection section; 122 - Positive mating cavity; 123 - Negative mating cavity; 200 - Charging plug; 210 - Plug body; 220 - Second charging section; 221 - Base; 221a - Positive base; 221b - Negative base; 2211 - Mounting hole; 11a - First hole segment; 11b - Second hole segment; 22 2-Power supply structure; 222a-Positive power supply structure; 222b-Negative power supply structure; 223-Charging port; 223a-Positive charging port; 223b-Negative charging port; 2231-Waterproof pad; 230-Drainage groove; 231-First drainage groove; 232-Second drainage groove; 300-Water removal structure; 310-Wiping part; 311-Guide hole; 312-First protrusion; 320-Head protective cover; 321-Groove; 330-Tail protective cover; 340-Waterproof sleeve; 341-Main body; 342-Second protrusion. Detailed Implementation

[0072] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this application will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and therefore their detailed descriptions will be omitted. Furthermore, the drawings are merely illustrative of this application and are not necessarily drawn to scale.

[0073] Although relative terms such as "up" and "down" are used in this specification to describe the relative relationship of one component of an icon to another, these terms are used only for convenience, such as according to the orientation of the examples shown in the accompanying drawings. It is understood that if the device of the icon is flipped upside down, the component described as "up" will become the component described as "down." When a structure is "up" of another structure, it may mean that the structure is integrally formed on the other structure, or that the structure is "directly" mounted on the other structure, or that the structure is "indirectly" mounted on the other structure through another structure.

[0074] The terms “a,” “one,” “the,” “the,” and “at least one” are used to indicate the presence of one or more elements / components / etc.; the terms “including” and “having” are used to indicate an open-ended inclusion and to mean that there may be other elements / components / etc. in addition to the listed elements / components / etc.; the terms “first,” “second,” and “third,” etc., are used only as markers and are not a limitation on the number of objects.

[0075] In this application, terms such as "perpendicular" and "equal" refer to perpendicularity and equality within the range of process error, not absolute perpendicularity and equality. Process error can be within ±10% or ±5%. For example, if the first direction and the second direction are perpendicular, it can be understood that the angle between the first direction and the second direction can be 90° ± 5°.

[0076] Currently, intelligent cleaning devices (such as automatic pool cleaners and cleaning robots) typically recharge themselves via a charging dock and plug. However, due to prolonged exposure to humid or underwater environments, the charging contacts are highly susceptible to corrosion from moisture, chlorides, and trace ions, leading to poor contact, short circuits, and reduced charging efficiency. To improve the corrosion resistance of the contacts, various waterproof and corrosion-resistant solutions have been proposed in related technologies.

[0077] For example, to reduce moisture residue, attempts are made to remove moisture through external drying devices or independent drainage structures. While these technologies can improve the waterproof performance of charging contacts to some extent, their water removal action relies on independent mechanisms, resulting in complex structures and large volumes. The drying component and electrical connection are two separate steps, making it impossible to simultaneously complete water removal and conductivity during the insertion process, leading to poor structural compactness and cumbersome operation.

[0078] Based on this, such as Figures 1 to 4 , Figure 8 and Figure 10 As shown, this application provides a corrosion-resistant charging structure, including a charging base 100 and a charging plug 200. The charging base 100 includes a charging base body 110 and a first charging part 120 disposed on the charging base body 110; the charging plug 200 includes a plug body 210 and a second charging part 220 disposed on the plug body 210. A water-removing structure 300 is fixedly installed on the first charging part 120 and / or the second charging part 220. During the docking process between the second charging part 220 and the first charging part 120, the water-removing structure 300 at least partially removes water from the second charging part 220 and / or the first charging part 120.

[0079] The corrosion-resistant charging structure provided in this application uses a water-removing structure 300 fixedly installed on the first charging section 120 or the second charging section 220. During the docking process, the water-removing structure 300 simultaneously acts on the charging interface area to wipe away or drain water stains on the surface of the charging contacts, effectively reducing residual moisture. This design achieves water removal during the docking process of the first charging section 120 and the second charging section 220 without adding external drying components, ensuring that the electrical connection area remains dry after docking, significantly reducing the risk of short circuits, leakage, and electrochemical corrosion caused by water.

[0080] This structure allows the dehydration and docking processes to occur simultaneously, achieving dry dehydration without additional steps. The overall structure is simple, highly reliable, and suitable for charging cleaning equipment in humid or even underwater environments. By mechanically removing moisture during the insertion and removal process using the dehydration structure 300, this application achieves a synchronized design between moisture removal and docking, thereby improving the durability and corrosion resistance of the charging structure.

[0081] The various parts of the corrosion-resistant charging structure provided in the embodiments of this application will now be described in detail with reference to the accompanying drawings:

[0082] like Figures 1 to 4 , Figure 8 and Figure 10 As shown, the corrosion-resistant charging structure provided in this application includes a charging base 100 and a charging plug 200. The charging base 100 includes a charging base body 110 and a first charging part 120 disposed on the charging base body 110. The charging plug 200 includes a plug body 210 and a second charging part 220 disposed on the plug body 210.

[0083] The corrosion-resistant charging structure provided in this application is particularly suitable for intelligent cleaning systems such as pool cleaning equipment that operate for extended periods in high-humidity, underwater, or corrosive ion environments. This charging structure enables simultaneous moisture removal and electrical connection during the docking process, ensuring that the charging contacts remain dry during insertion. This effectively prevents electrochemical corrosion caused by moisture, chloride ions, and other corrosive substances, significantly improving the safety and reliability of the equipment in harsh environments.

[0084] Taking swimming pool cleaning equipment as an example, this equipment typically includes a charging device and a cleaning robot. The charging device is generally located on the upper part of the pool edge or wall, i.e., the non-waterlogged area of ​​the pool wall. The charging device can be a charging cable or a base station, but is not limited to these. The base station can be used to provide power, communication, and docking positioning functions. The charging device is equipped with a charging plug 200, which is used to automatically dock with the cleaning robot when it returns, or to dock manually by the operator. The cleaning robot is equipped with a charging base 100, which is used to dock with the charging plug 200 on the charging device. After the cleaning robot completes its cleaning task, it can automatically return to the charging device position through the navigation control system and accurately connect with the charging plug 200. Of course, the cleaning robot can also be manually moved to the charging device for charging by the operator. During this process, the corrosion-resistant charging structure of this application can drain the residual moisture in the charging structure, ensuring that the electrical connection interface remains dry, thereby achieving a highly reliable charging process of plug-and-charge and automatic water removal.

[0085] Furthermore, the corrosion-resistant charging structure provided in this application can also be widely used in other types of equipment operating in wet or underwater environments. For example, it can be applied to automatic recharging devices in high-humidity environments such as home floor cleaning robots and bathroom mopping robots; it can also be used in charging systems for equipment exposed to rainwater or dew, such as outdoor spraying robots, lawn cleaning robots, or dock inspection robots; and it can even be extended to scenarios where underwater inspection and maintenance robots, automatic aquarium cleaning devices, and ship cabin inspection robots need to be charged in water or saline environments.

[0086] In some embodiments of this application, the charging base 100 and the charging plug 200 cooperate to achieve electrical connection and water removal functions during the device charging process. The charging plug 200 is typically located on an external charging device and is used to transfer external electrical energy to the internal battery of the cleaning device. The charging base 100, as the part connected to the main body of the cleaning device, is mainly used to provide an electrical input path.

[0087] like Figure 4 As shown, the charging dock 100 includes a charging dock body 110 and a first charging part 120 disposed on the charging dock body 110. The charging dock body 110 may be a one-piece molded structure, and the material may be engineering plastic to adapt to working conditions in humid or underwater environments for a long time. A waterproof sealing layer or water-proof cover may be formed on the outer surface of the charging dock body 110 to prevent external liquids from seeping into the device. The first charging part 120 is disposed on the outer side of the charging dock body 110.

[0088] like Figure 1 , Figure 2 and Figure 3As shown, the charging plug 200 includes a plug body 210 and a second charging part 220 disposed on the plug body 210. The plug body 210 can be fixedly disposed on the charging device. The second charging part 220 can be disposed at the front end of the plug body 210 for plugging with the first charging part 120 to form an electrical connection.

[0089] like Figure 1 , Figure 8 and Figure 10 As shown, in the anti-corrosion charging structure of this application, a water-removing structure 300 can be fixedly installed on either the first charging part 120 or / and the second charging part 220. By providing the water-removing structure 300 on the first charging part 120 and / or the second charging part 220, when the two parts are inserted into each other during the docking process, the water-removing structure 300 can mechanically wipe away or guide the moisture in the charging contact area at the same time as the first charging part 120 and the second charging part 220 dock, so that the electrical contact interface always remains dry.

[0090] In some embodiments of this application, the first charging unit 120 includes a charging pin 121, and the second charging unit 220 has a charging hole 223 for inserting the charging pin 121, thereby forming an electrical connection during or after the docking of the first charging unit 120 and the second charging unit 220. The charging pin 121, as a conductive element, is inserted into the charging hole 223 and contacts the conductive element within the charging hole 223. The charging pin 121 can be connected to the internal power supply line or battery module of the device. The charging pin 121 can be made of a corrosion-resistant metal material, such as nickel-plated copper, titanium alloy, or stainless steel, to ensure good conductivity and corrosion resistance even in high-humidity environments.

[0091] The charging port 223 can be circular, conical, or multi-segmented to accommodate charging pins 121 of different diameters or shapes and achieve stable insertion. To improve the balance and guidance of the insertion force, a guide slope or conical opening can be provided at the entrance of the charging port 223 so that the charging pin 121 is automatically centered when inserted, thereby ensuring a smooth and stable insertion process.

[0092] The water removal structure 300 includes a wiping portion 310 disposed on the plug body 210. During the docking process between the second charging portion 220 and the first charging portion 120, the wiping portion 310 removes at least a portion of the water on the charging pin 121. The wiping portion 310 can be made of an elastic material, such as silicone, fluororubber, or hydrophobic polyurethane, and is annularly wrapped around the wall of the charging hole 223. When the charging pin 121 enters the charging hole 223, the wiping portion 310 comes into contact with the outer wall of the charging pin 121, and a certain amount of friction is generated during relative movement.

[0093] Through this frictional contact, the wiping section 310 can mechanically remove the water film adhering to the surface of the charging pin 121. The elastic deformation of the wiping section 310 generates continuous covering pressure when the charging pin 121 is inserted, ensuring that moisture can be effectively squeezed out or absorbed, and keeping the outer surface of the charging pin 121 inside the charging hole 223 dry.

[0094] The design of this structure allows the dewatering action to be performed simultaneously with the docking action. The insertion movement of the charging pin 121 naturally triggers the dewatering process, achieving automatic cleaning of the contact surface without the need for an external drive mechanism or additional drying device. By arranging the wiping part 310 around the charging hole 223, not only is the impact of residual moisture on conductivity effectively avoided, but it also plays a certain role in sealing, preventing external moisture from seeping into the charging hole 223 along the insertion gap.

[0095] In some embodiments of this application, the second charging unit 220 includes a base 221 and a power supply structure 222. The base 221 protrudes from one side of the plug body 210 and serves to support functional components such as the power supply structure 222 and the erasing unit 310. The base 221 is typically made of a high-strength and corrosion-resistant material, such as engineering plastics or polycarbonate (PC), to ensure good structural stability and sealing reliability even after repeated insertions and removals and in underwater environments. The base 221 protrudes relative to the plug body 210 and can be integrally formed with the plug body 210.

[0096] like Figure 8 , Figure 9 As shown, a mounting hole 2211 is provided on the base 221. The mounting hole 2211 penetrates or partially extends into the interior of the base 221 to accommodate and fix the power supply structure 222 and the erasing part 310. The size and shape of the mounting hole 2211 can be designed according to the shape of the power supply structure 222, and is usually a circular or multi-segment stepped hole to achieve precise positioning and multi-layer sealing.

[0097] The power supply structure 222, located within the mounting hole 2211, is a key component for the second charging unit 220 to transfer electrical energy. The power supply structure 222 can be a metal conductive component, a flexible contact assembly, or an embedded conductive module. Its material can be copper alloy, nickel-plated copper, stainless steel, or titanium alloy, to balance conductivity and corrosion resistance. A charging hole 223 is provided at the front end of the power supply structure 222, allowing the charging pin 121 to be inserted and form electrical contact with the power supply structure 222 during docking.

[0098] In the above structure, the wiping part 310 is disposed within the mounting hole 2211, and at least part of it is located on the side of the power supply structure 222 away from the base 221, that is, in the front region of the outer end of the power supply structure 222. This positional arrangement is of great significance: on the one hand, it allows the wiping part 310 to contact its outer surface at the initial stage of the insertion of the charging pin 121, thereby completing the water removal action before entering the power supply structure 222; on the other hand, this arrangement can effectively prevent moisture from being brought into the internal space of the power supply structure 222 during the insertion movement. The wiping part 310 can be made of a flexible waterproof material, such as silicone, rubber, or polyurethane foam, and its shape can be a ring or an embedded sealing ring, with its outer diameter fitting against the inner wall of the mounting hole 2211 to ensure stable installation and sealing.

[0099] When the charging pin 121 is inserted into the second charging section 220 from the direction of the first charging section 120, the wiping section 310 first contacts the outer wall of the front end of the charging pin 121. As the insertion depth increases, the wiping section 310 gradually forms a covering contact with the surface of the charging pin 121, wiping away any attached moisture or impurities during relative sliding, and guiding or draining them along the gap area on the outside of the substrate 221, thereby preventing moisture from remaining inside the charging hole 223 or the power supply structure 222. When the charging pin 121 is further inserted into the conductive area of ​​the power supply structure 222, the electrical contact surface is already dry, thereby forming a stable, low-resistance electrical connection.

[0100] In some embodiments of this application, such as Figure 8 and Figure 11 As shown, the wiping part 310 has a through guide hole 311, and a first protrusion 312 protrudes from the wall of the guide hole 311. During the docking process between the second charging part 220 and the first charging part 120, the first protrusion 312 forms an interference fit with the outer surface of the charging pin 121. This structure enables the wiping part 310 to not only have a water removal function, but also to undertake a combined function of guiding and sealing.

[0101] A guide hole 311 penetrates the center of the erasing part 310, and its diameter may be slightly smaller than or equal to the diameter of the charging pin 121. A first protrusion 312 protrudes from the wall of the guide hole 311 to ensure a suitable interference fit with the charging pin 121 during insertion. The guide hole 311 provides an axial positioning channel for the charging pin 121, keeping it coaxial with the charging hole 223 during insertion, thereby avoiding eccentric insertion or scratching the inner wall of the power supply structure 222. Through this design, the insertion force of the charging pin 121 is balanced, the insertion and removal action is smoother, and the risk of structural wear and poor contact is significantly reduced.

[0102] Furthermore, the guide hole 311 may have two or more first protrusions 312 spaced apart along the axial direction on its wall. The first protrusions 312 may be annular ribs, strip ribs, or locally dotted protrusions. Preferably, the first protrusions 312 are annular ribs. The first protrusions 312 are formed of a flexible material, which undergoes elastic deformation when the charging pin 121 is inserted, forming an interference fit with the outer wall of the charging pin 121. This interference fit not only provides a continuous contact force during insertion but also removes the water film adhering to the surface of the charging pin 121 at multiple points through friction.

[0103] Furthermore, the elastic pressing action of the first protrusion 312 can effectively seal the contact interface between it and the charging pin 121, preventing external moisture from seeping into the conductive area through the gap between them. When the charging pin 121 is fully inserted into the power supply structure 222, the first protrusion 312 in the guide hole 311 will surround the charging pin 121 under a slight pre-pressure state, thereby forming a flexible sealing barrier and further enhancing the waterproof performance.

[0104] In this type of embodiment, the guide hole 311 ensures insertion accuracy, and the first protrusion 312 achieves both wiping and sealing effects. Through this interference fit, the wiping part 310 can automatically complete the three functions of guiding, dehydration, and sealing during the insertion and removal of the charging pin 121, without the need for an additional drive device or sealing ring.

[0105] Exemplary examples, in some embodiments of this application, such as Figure 9 As shown, the mounting hole 2211 includes a first hole segment 11a and a second hole segment 11b that are interconnected and arranged sequentially in the axial direction to form a leading and rear partition structure. The second hole segment 11b is located on the side of the first hole segment 11a closer to the plug body 210 and is used to mount the power supply structure 222 and the erasing part 310, while the first hole segment 11a is located on the outer side and serves as a guide segment for the insertion of the charging pin 121.

[0106] Preferably, the inner wall of the first hole segment 11a has a tapered structure, with its diameter gradually decreasing from the outside to the inside, forming a guiding transition surface. When the charging pin 121 is inserted, the contraction structure of the tapered hole naturally guides the axis of the charging pin 121 to align with the center of the charging hole 223, preventing insertion misalignment due to positional offset or angular error. This design not only reduces insertion force but also effectively avoids scratching and wear between the charging pin 121 and the hole wall, improving insertion and removal life. For example, the taper of the first hole segment 11a can be adjusted according to the diameter of the charging pin 121 and the insertion depth to balance guiding accuracy and operational smoothness.

[0107] In some embodiments, the inlet edge of the first hole segment 11a may be provided with a chamfered or rounded transition section to further reduce the insertion force and improve assembly smoothness. To prevent water droplets from flowing back along the hole wall, the inner wall of the first hole segment 11a may also be provided with drainage grooves to guide the attached water to the drainage path during the docking process, thereby forming a "guiding + drainage" composite structure. The second hole segment 11b is used to install the power supply structure 222 and the wiping part 310. The connection between the first hole segment 11a and the second hole segment 11b may be designed as a rounded transition surface to avoid stress concentration or injection molding deformation caused by sharp angle connections.

[0108] In some exemplary embodiments of this application, the power supply structure 222 has a slot in its circumference, the slot is located at one end of the power supply structure 222 away from the plug body 210, and the erasing part 310 is at least partially engaged in the slot.

[0109] In this type of embodiment, by creating a circumferential slot in the power supply structure 222 and engaging at least a portion of the wiping part 310 within the slot, a stable positioning and fixed fit is formed between the wiping part 310 and the power supply structure 222. This structure prevents the wiping part 310 from shifting or falling off during repeated insertion / removal or water flushing, thus ensuring its positional stability and reliable function during the water removal process. The circumferential slot provides precise constraint during installation, improving assembly accuracy and maintaining a predetermined posture during insertion / removal, achieving a continuous and uniform wiping effect. This design ensures the long-term durability and functional stability of the water removal structure 300, further enhancing the waterproof and corrosion-resistant performance and service life of the charging structure.

[0110] If you go to 1, Figures 5 to 7 As shown, the charging pin 121, as the core conductive element of the first charging section 120, is used to transfer energy between the charging base 100 and the charging plug 200. Further, the charging pin 121 includes a head 1211, a tail 1212, and an electrical connection segment 1213 located between the head 1211 and the tail 1212. These three components work together to form a stable and continuous conductive path. The tail 1212 of the charging pin 121 is reliably connected to the charging base body 110 to achieve electrical energy input and mechanical fixation, while the electrical connection segment 1213 is used to connect with the charging hole 223 in the second charging section 220 to form a conductive contact.

[0111] The head 1211 of the charging pin 121 is typically a hemispherical cylindrical structure, but is not limited to this. Its surface may be precision polished or coated with an anti-corrosion coating to ensure smooth insertion and removal and improve conductivity reliability. The head 1211 is the area where the charging pin 121 first enters the charging hole 223. The electrical connection section 1213, located between the head 1211 and the tail 1212, is the main area for current conduction and is usually left exposed to ensure conductivity efficiency. The tail 1212 is the connection end used for electrical connection with wires, electrode plates, or circuit modules inside the charging base body 110.

[0112] To further enhance corrosion and water resistance, the water-removing structure 300 also includes a head protective sleeve 320. The head protective sleeve 320 surrounds the outer periphery of the head 1211 of the charging pin 121. The head protective sleeve 320 is an insulating structure, and its material can be an insulating and aging-resistant waterproof material, such as silicone rubber, fluororubber, polyurethane, or modified nylon. Furthermore, the head protective sleeve 320 can adopt a plastic-coated structure, that is, a plastic protective layer is coated on the outer surface of the head 1211 of the charging pin 121 to provide insulation and corrosion protection. This plastic-coated layer can be formed on the surface of the charging pin 121 through injection molding or overmolding processes. The coating materials can be thermoplastic elastomers (TPE), thermoplastic polyurethanes (TPU), thermoplastic rubbers (TPR), polybutylene terephthalate (PBT), polyamides (PA), polycarbonates (PC), or flexible sealing materials such as silicone rubber, fluororubber (FKM), and ethylene propylene diene monomer (EPDM).

[0113] The head protective sleeve 320 fits tightly against the surface of the charging pin 121, forming a sealed covering layer to isolate external liquids from contact with the metal conductive surface. This head protective sleeve 320 not only prevents ionic media such as pool water and moisture from directly contacting the head 1211 of the charging pin 121, but also provides shock protection and cushioning during insertion, preventing mechanical wear.

[0114] Preferably, such as Figures 5 to 7 , Figure 10 and Figure 12As shown, the water-removing structure 300 also includes a tail protective sleeve 330, which is fitted around the tail 1212 of the charging pin 121 and extends at least to the connection between the tail 1212 and the charging base body 110. Similarly, the tail protective sleeve 330 is an insulating structure, and its material is the same as or similar to that of the head protective sleeve 320. Likewise, the tail protective sleeve 330 can also be a plastic-coated structure, and its material selection can refer to, but is not limited to, that of the head protective sleeve 320. The main function of the tail protective sleeve 330 is to isolate external moisture from contact with the tail 1212 of the charging pin 121 and to seal the connection gap between the charging pin 121 and the charging base body 110, preventing moisture or humidity from seeping into the interior of the charging base 100 along the gap. Since the charging base body 110 is typically the power input channel, if the tail 1212 area is not properly sealed, moisture can easily enter the internal cavity and cause corrosion or short circuits. Therefore, the tail cover 330 forms a continuous waterproof barrier in its structure, which can effectively block the axial penetration of external moisture. Optionally, the tail cover 330 can be made of the same material as the charging base body 110, and furthermore, the tail cover 330 can be integrally formed with the charging base body 110.

[0115] In this embodiment, the head protective sleeve 320 prevents moisture intrusion at the front end, and the tail protective sleeve 330 prevents water leakage at the rear end, thereby ensuring that the entire electrical connection section 1213 is in a dry environment, significantly reducing the risk of electrochemical corrosion and poor contact. Simultaneously, the insulating coating structure can reduce metal fatigue and salt spray corrosion during long-term use, extending the service life of the charging pin 121. Through this double-end sealing and mid-section conductive design, this application achieves a compact, fully functional, and environmentally adaptable corrosion-resistant charging pin 121 structure, providing a reliable guarantee for the overall performance of the corrosion-resistant charging system.

[0116] Optionally, such as Figure 12 As shown, after the second charging unit 220 is docked with the first charging unit 120, the wiping unit 310 is at least partially fitted around the outer periphery of the tail protective sleeve 330 and is at least partially in contact with the outer surface of the tail protective sleeve 330. This structural design allows the wiping unit 310 to not only perform the function of removing water during the insertion of the charging pin 121, but also to form an effective sealing interface.

[0117] Structurally, the erasing part 310 is located in the front end region of the mounting hole 2211 of the second charging part 220, while the tail protective sleeve 330 is disposed around the tail 1212 of the charging pin 121 of the first charging part 120. When the charging pin 121 enters the charging hole 223 along the insertion direction, the erasing part 310 first contacts the head 1211 of the charging pin 121 and the outer wall of the electrical connection section 1213, and uses elastic friction to wipe away the water film and impurities adhering to the surface of the charging pin 121; as the insertion depth increases, the charging pin 121 gradually passes through the erasing part 310 and enters the conductive area of ​​the power supply structure 222. At this time, the front end region of the erasing part 310 will gradually contact the outer surface of the tail protective sleeve 330 and form a sleeved state.

[0118] When the charging pin 121 is fully inserted and an electrical connection is established, the wiping section 310 at least partially covers the outer peripheral surface of the tail protective sleeve 330. The contact between the two can be an elastic fit, a slight compression, or a partial interference fit, ensuring that the wiping section 310 remains sealed under external water pressure or equipment vibration. Especially in humid or underwater environments, this sleeve-type contact structure effectively resists liquid penetration and air bubble trapping, ensuring that the electrical connection section 1213 remains dry at all times.

[0119] Furthermore, this design gives the wiping section 310 a "dual function"—during the insertion phase, its inner wall removes water from the surface of the charging pin 121; during the full insertion phase, its outer edge fits into the tail protective sleeve 330 to form a seal. This dynamic switching function allows water removal and sealing to be completed simultaneously in the same structure, simplifying the overall construction and improving its reliability and durability. Moreover, the termination position of the charging docking action coincides with the formation of the sealing interface, achieving simultaneous completion of electrical connection and waterproof sealing. This structure effectively prevents external liquids from flowing back into the power supply area, avoiding electrochemical corrosion, short circuits, or conductive instability caused by residual moisture.

[0120] In practical applications, the contact area between the wiping section 310 and the tail protective sleeve 330 can be optimized according to the material elasticity and insertion tolerance. The wiping section 310 can be made of flexible insulating material to adapt to the deformation and fit of charging pins 121 of different diameters; the surface of the tail protective sleeve 330 can be designed as a smooth arc or micro-textured structure to improve the coefficient of friction and enhance sealing stability.

[0121] In some embodiments of this application, such as Figure 5 , Figure 6 , Figure 10 and Figure 12As shown, the water-removing structure 300 also includes a water-proof sleeve 340, which is disposed around the head 1211 of the charging pin 121. This water-proof sleeve forms a water flow barrier in the structure, preventing water from flowing from the head 1211 to the electrical connection section 1213 of the charging pin 121. This further enhances the waterproof and corrosion-resistant performance of the charging interface.

[0122] The waterproof sleeve 340 can be made of elastic waterproof material, such as silicone rubber, fluororubber, polyurethane, or weather-resistant thermoplastic elastomer (TPE), with moderate hardness, smooth surface, and a certain degree of resilience. The waterproof sleeve 340 is ring-shaped and fitted around the charging pin 121. After installation, the waterproof sleeve 340 fits tightly against the outer wall of the charging pin 121, forming a continuous sealing ring structure.

[0123] The water-proof sleeve 340 is located in the rear region of the head protective sleeve 320, close to the electrical connection section 1213. When moisture attempts to flow from the head 1211 (which acts as the charging pin 121) along the outer wall of the charging pin 121, it is blocked by the leading edge of the water-proof sleeve 340 and accumulates in the head 1211 region. At this time, the moisture can be discharged through the wiping section 310 or the drainage channel, preventing further seepage into the electrical connection section 1213 and the power supply structure 222. Furthermore, the water-proof sleeve 340 not only acts as a water barrier but also provides cushioning and support during insertion and removal. Its elastic properties absorb minor displacements or vibrations generated during insertion and removal, preventing hard friction between metals and improving structural durability.

[0124] Furthermore, in terms of structural layout, the waterproof sleeve 340 and the head protective sleeve 320 together constitute a front-end waterproof system: the head protective sleeve 320 is responsible for covering and isolating the conductive surface of the head 1211, while the waterproof sleeve 340 is responsible for preventing water from spreading to the electrical connection section 1213, thereby achieving multi-level protection. Through this combination design of "front-end coverage + mid-section isolation", moisture is confined to the non-conductive area, and the electrical connection section 1213 remains dry at all times.

[0125] For example, such as Figure 7 As shown, the waterproof sleeve 340 includes a main body 341 fitted around the head protective sleeve 320 and a second protrusion 342 protruding from the periphery of the main body 341. The second protrusion 342 is used to form an interference fit with the charging port 223. In addition, a groove 321 is formed on the periphery of the head protective sleeve 320, and the waterproof sleeve 340 is embedded in the groove 321. Through this structural design, the waterproof sleeve 340 can form a stable fit with the head protective sleeve 320 in space, and functionally achieve sealing and water blocking and guiding support for the front end area of ​​the charging pin 121.

[0126] The main body 341, as the main structural component of the waterproof sleeve 340, is cylindrical in shape. The main body 341 is tightly fitted onto the outer circumference of the head protective sleeve 320. Optionally, the inner diameter of the main body 341 is slightly smaller than the outer diameter of the head protective sleeve 320, thereby generating a slight elastic deformation during assembly, ensuring a stable fit and frictional fixation between the waterproof sleeve 340 and the head protective sleeve 320. This structure ensures that the waterproof sleeve 340 remains stable in position after prolonged use or repeated insertion and removal, preventing it from easily falling off or rotating. The main body 341 is typically made of a flexible waterproof material, such as silicone, fluororubber, or thermoplastic elastomer (TPE), to provide good resilience, fatigue resistance, and hydrolysis resistance.

[0127] The second protrusion 342 forms an interference fit with the inner wall of the charging hole 223. Through this fit, the second protrusion 342 generates an elastic clamping effect when the charging pin 121 is inserted into the charging hole 223, thereby forming a sealed contact with the inner wall of the charging hole 223 and preventing external moisture from seeping into the electrical connection area through gaps. After the charging pin 121 is fully inserted, the second protrusion 342 maintains a certain elastic pre-tightening force, ensuring the sealing effect persists and that the entire insertion interface remains in a controlled dry state.

[0128] Optionally, the second protrusion 342 protrudes from the periphery of the main body 341, and its shape may be a ring-shaped rib, a strip-shaped rib, or a partially dotted protrusion structure. Preferably, the second protrusion is a ring-shaped rib. The second protrusion 342 surrounds the periphery of the main body 341, and the number of the second protrusion 342 may be two or more, and they are distributed at intervals along the axial direction of the charging pin 121.

[0129] like Figure 5 As shown, a groove 321 is provided on the periphery of the head protective sleeve 320 to accommodate and position the water-proof sleeve 340. This groove 321 is circumferentially arranged on the outer surface of the head protective sleeve 320, and its depth matches the thickness of the main body 341 of the water-proof sleeve 340. This ensures that the water-proof sleeve 340 is basically flush with the outer surface of the head protective sleeve 320 after assembly, guaranteeing a smooth appearance and preventing the water-proof sleeve 340 from loosening due to external force during insertion and removal. Through this fitted engagement, a stable fit is formed between the water-proof sleeve 340 and the head protective sleeve 320, preventing displacement due to friction during insertion and removal. This ensures that the second protrusion 342 remains in the predetermined position and accurately contacts the wall of the charging port 223.

[0130] In some embodiments, such as Figure 13As shown, a waterproof pad 2231 is provided inside the charging port 223. The waterproof pad 2231 covers at least the bottom area of ​​the charging port 223 and is used to seal and isolate the bottom of the port after charging is completed. The waterproof pad 2231 is preferably made of a material with good elasticity and resilience, such as silicone rubber, fluororubber (FKM), or ethylene propylene diene monomer (EPDM), to ensure reliable sealing performance and waterproof effect after repeated insertion and removal.

[0131] After the second charging part 220 is connected to the first charging part 120, the second protrusion 342 and the waterproof pad 2231 form an interference fit. Because the waterproof pad 2231 has a certain degree of flexibility, it can undergo elastic deformation under pressure, causing the surface of the waterproof pad 2231 to tightly adhere to the outer wall of the second protrusion 342, thereby forming a stable sealing contact surface at the bottom of the hole. This sealing structure can seal any small amount of water remaining at the bottom of the charging hole 223, preventing it from entering the electrical connection area where the power supply structure 222 is located.

[0132] Furthermore, the thickness of the waterproof pad 2231 can be optimized according to the depth of the charging hole 223 and the insertion force of the second protrusion 342 to ensure that sufficient sealing pressure is formed without affecting the smoothness of charging plugging and unplugging.

[0133] In addition, the waterproof pad 2231 can be fixed to the bottom of the charging hole 223 by embedded installation or by a slot limiting method. For example, an annular limiting groove can be provided at the bottom of the charging hole 223, and the outer peripheral edge of the waterproof pad 2231 is embedded therein, thereby preventing the waterproof pad 2231 from shifting or falling off during insertion and removal.

[0134] Through the above structural design, even if the water removal structure 300 has removed the surface moisture of the first charging part 120 or the second charging part 220, if a small amount of water remains at the bottom of the charging hole 223, the interference fit between the waterproof pad 2231 and the second protrusion 342 can limit this part of water to the non-conductive area at the bottom of the hole, preventing it from spreading to the electrical connection interface in the middle, further improving the reliability and corrosion resistance of the charging system in humid or underwater environments.

[0135] In some embodiments of this application, such as Figures 1 to 4As shown, the first charging unit 120 also includes a positive docking cavity 122 and a negative docking cavity 123 formed on the charging base body 110, and charging pins 121 are provided in both the positive docking cavity 122 and the negative docking cavity 123. The substrate 221 includes positive substrates 221a and negative substrates 221b spaced apart, the power supply structure 222 includes a positive power supply structure 222a and a negative power supply structure 222b, and the charging hole 223 includes a positive charging hole 223a and a negative charging hole 223b, as shown. Figure 8 As shown. The positive substrate 221a is provided with a positive power supply structure 222a, and a positive charging hole 223a is opened in the positive power supply structure 222a. The negative substrate 221b is provided with a negative power supply structure 222b, and a negative charging hole 223b is opened in the negative power supply structure 222b.

[0136] Furthermore, the charging pin 121 includes a positive charging pin 121a and a negative charging pin 121b. During the docking process between the positive mating cavity 122 and the positive substrate 221a, the positive charging pin 121a can be inserted into the positive charging hole 223a, and the positive power supply structure 222a can form an electrical connection with the positive charging pin 121a. During the docking process between the negative mating cavity 123 and the negative substrate 221b, the negative charging pin 121b can be inserted into the negative charging hole 223b, and the negative power supply structure 222b can form an electrical connection with the negative charging pin 121b. Preferably, the positive substrate 221a and the negative substrate 221b have different shapes and / or sizes.

[0137] In this type of embodiment, by providing a positive docking cavity 122 and a negative docking cavity 123 on the first charging unit 120, and correspondingly providing a positive substrate 221a and a negative substrate 221b on the second charging unit 220, the two sets of structures achieve independent positive and negative electrode connections. This structure effectively avoids the risk of short circuits caused by water stains or conductive liquid films by spatially separating the positive and negative electrode paths. During the docking process, the positive charging pin 121a and the positive charging hole 223a, and the negative charging pin 121b and the negative charging hole 223b are independently inserted and electrically connected, making the charging path clear and the conductivity stable. At the same time, the difference in shape or size between the positive substrate 221a and the negative substrate 221b can achieve foolproof positioning, preventing misinsertion and reverse connection, thereby improving the safety and reliability of charging operation. Through the above structural layout, the electrical connection between the positive and negative electrodes is more stable, and with the aforementioned water removal and waterproofing structure, the safety and long-term stability of the electrical connection in humid or underwater environments are further ensured.

[0138] For example, the positive substrate 221a and the negative substrate 221b can have various differentiated designs in shape and / or size to achieve functions such as misalignment prevention, guidance correction, and electrical isolation. For instance, in one structure, the positive substrate 221a can be designed as a cylindrical structure, while the negative substrate 221b can be designed as an elliptical or prismatic structure, thereby mechanically ensuring that the two can only be inserted in a specific direction, avoiding the risk of short circuits caused by reverse installation or misinsertion.

[0139] In another embodiment, the outer diameter of the positive substrate 221a can be slightly larger than that of the negative substrate 221b. For example, the diameter of the positive substrate 221a is 10 mm, while the diameter of the negative substrate 221b is 8 mm, creating a clear spatial distinction between the two. In this case, when the charging plug 200 mates with the charging base 100, the size difference will guide the positive and negative charging pins 121b into the corresponding charging holes 223, achieving automatic guidance and precise positioning.

[0140] To improve user identification and ease of maintenance, the positive and negative substrates 221b can also be identified by different colors or materials. For example, the positive substrate 221a can be made of red insulating material, while the negative substrate 221b can be made of black material, making it easy to visually distinguish the two poles and facilitating assembly and maintenance.

[0141] To further enhance the water removal effect of the corrosion-resistant charging structure, in some embodiments of this application, such as Figure 3 As shown, the charging plug 200 has a drainage groove 230. During the docking process between the second charging part 220 and the first charging part 120, the water removed from the first charging part 120 and / or the second charging part 220 by the water removal structure 300 can be discharged through the drainage groove 230. The drainage groove 230 is preferably located below or on the side wall of the second charging part 220 so that the water can be naturally drained under the action of gravity or capillary drainage.

[0142] In practical applications, when cleaning equipment (such as pool cleaning robots) returns to its charging station after completing a cleaning task, its surface usually still retains a certain amount of water droplets or moisture. If this moisture seeps between the first charging section 120 and the second charging section 220 during the docking process, it may cause contact oxidation or electrochemical corrosion. Therefore, the drainage channel 230 is designed to guide water flow out simultaneously during the docking action, effectively ensuring the dryness and stability of the electrical connection interface.

[0143] Furthermore, the drainage channel 230 includes a first drainage channel 231 and a second drainage channel 232 that are interconnected, forming a continuous flow path to achieve a graded drainage function from the inside out. The first drainage channel 231 is preferably located on the outer surface of the base 221 and communicates with the charging hole 223, so that water accumulated in the charging hole 223 can be directly drained during the insertion of the charging pin 121 into the charging hole 223. Through the design of communicating with the charging hole 223, water flow can be quickly guided away from the electrical contact area along the flow direction of the first drainage channel 231, preventing water pressure or liquid accumulation during the insertion of the charging pin 121.

[0144] The second drainage channel 232 is preferably located on the side surface of the plug body 210 facing the second charging section 220, and its inlet is connected to the first drainage channel 231 to form a continuous drainage path. This structure allows water flowing out of the charging port 223 and the first drainage channel 231 to be further guided to the outside of the charging plug 200, thereby achieving graded discharge.

[0145] By incorporating a first drainage groove 231 and a second drainage groove 232 on the charging plug 200, not only is rapid drainage and graded discharge of moisture achieved, but the design also works synergistically with the wiping section 310, the water-resistant sleeve 340, and other water-removing components. This ensures that the entire corrosion-resistant charging structure maintains a dry and stable electrical connection even underwater or in high-humidity environments. This design significantly improves the reliability, durability, and safety of the device in humid environments, ensuring that the equipment maintains its high-efficiency waterproof and corrosion-resistant properties during long-term use.

[0146] Furthermore, there can be multiple first drainage grooves 231, which are circumferentially distributed on the surface of the substrate 221, and each first drainage groove 231 is connected to the charging hole 223.

[0147] This application also provides a cleaning device, including a charging device, a cleaning robot, and a corrosion-resistant charging structure. The corrosion-resistant charging structure includes a charging base 100 and a charging plug 200. The charging base 100 includes a charging base body 110 and a first charging portion 120 disposed on the charging base body 110; the charging plug 200 includes a plug body 210 and a second charging portion 220 disposed on the plug body 210. A water-removing structure 300 is fixedly installed on the first charging portion 120 and / or the second charging portion 220. During the docking process between the second charging portion 220 and the first charging portion 120, the water-removing structure 300 at least partially removes water from the second charging portion 220 and / or the first charging portion 120.

[0148] Charging equipment is typically installed on the upper part of the pool edge or wall, i.e., the non-water-submerged area of ​​the pool wall. The charging equipment can be a charging cable or a base station, but is not limited to these. The base station can provide power, communication, and docking / positioning functions. The charging equipment is equipped with a charging plug 200 for automatic docking with the cleaning robot upon its return, or manual docking by the operator. The cleaning robot is equipped with a charging dock 100 for docking with the charging plug 200 on the charging equipment. After completing its cleaning task, the cleaning robot automatically returns to the charging equipment location via its navigation control system and precisely connects to the charging plug 200. Alternatively, the operator can manually move the cleaning robot to the charging equipment for charging.

[0149] The corrosion-resistant charging structure employs a water-removing structure 300 fixedly installed on either the first charging section 120 or the second charging section 220. During the docking process, the water-removing structure 300 simultaneously acts on the charging interface area to wipe away or drain water stains on the charging contact surface, effectively reducing residual moisture and preventing a water film from covering the conductive surface of the charging pin 121. This design achieves water removal during the docking process of the first charging section 120 and the second charging section 220 without adding external drying components, ensuring the electrical connection area remains dry after docking and significantly reducing the risk of short circuits, leakage, and electrochemical corrosion caused by water.

[0150] This structure allows the dehydration and connection processes to occur simultaneously, achieving dry dehydration without additional steps. The overall structure is simple, highly reliable, and suitable for charging cleaning equipment in humid or even underwater environments. By mechanically removing moisture during insertion and removal using the dehydration structure 300, this application achieves a synchronized design of moisture removal and electrical connection, thereby improving the durability and corrosion resistance of the charging structure.

[0151] like Figure 4 As shown, the charging dock 100 includes a charging dock body 110 and a first charging part 120 disposed on the charging dock body 110. The charging dock body 110 may be a one-piece molded structure, and the material may be engineering plastic to adapt to working conditions in humid or underwater environments for a long time. A waterproof sealing layer or water-proof cover may be formed on the outer surface of the charging dock body 110 to prevent external liquids from seeping into the device. The first charging part 120 is disposed on the outer side of the charging dock body 110.

[0152] like Figure 1 , Figure 2 and Figure 3 As shown, the charging plug 200 includes a plug body 210 and a second charging part 220 disposed on the plug body 210. The plug body 210 can be fixedly disposed on the charging device. The second charging part 220 can be disposed at the front end of the plug body 210 for plugging with the first charging part 120 to form an electrical connection.

[0153] like Figure 1 , Figure 8 and Figure 10 As shown, in the anti-corrosion charging structure of this application, a water-removing structure 300 can be provided on the first charging part 120 and / or the second charging part 220 to wipe or drain moisture at the contact interface during the charging insertion operation. By providing the water-removing structure 300 on the first charging part 120 and / or the second charging part 220, when the two are inserted into each other during the docking process, the water-removing structure 300 can mechanically wipe or guide the moisture in the charging contact area at the same time as the first charging part 120 and the second charging part 220 dock, so that the electrical contact interface always remains dry.

[0154] The further specific structures of the charging base 100, the charging plug 200, and the water removal structure 300 can be referred to the above embodiments, and will not be described in detail here.

[0155] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this application are indicated by the appended claims.

Claims

1. A corrosion-resistant charging structure, characterized in that, include: A charging dock includes a charging dock body and a first charging part disposed on the charging dock body; A charging plug, comprising a plug body and a second charging portion disposed on the plug body; A water removal structure is fixedly installed on the first charging unit and / or the second charging unit. During the docking process between the second charging unit and the first charging unit, the water removal structure removes at least part of the water on the second charging unit and / or the first charging unit.

2. The corrosion-resistant charging structure according to claim 1, characterized in that, The first charging unit includes a charging pin; The second charging part has a charging hole, and the charging hole is used for inserting the charging pin; The water removal structure includes a wiping part disposed on the plug body. During the docking process between the second charging part and the first charging part, the wiping part removes at least a portion of the water on the charging pins.

3. The corrosion-resistant charging structure according to claim 2, characterized in that, The second charging unit includes a base and a power supply structure. The base protrudes from one side of the plug body, and a mounting hole is provided on the base. The power supply structure is disposed in the mounting hole, and the charging hole is provided on the power supply structure. The erasing part is disposed in the mounting hole, and at least a portion of the erasing part is located on the side of the power supply structure away from the substrate.

4. The corrosion-resistant charging structure according to claim 3, characterized in that, The erasing part has a through guide hole, and the wall of the guide hole has a first protrusion. During the docking process between the second charging part and the first charging part, the first protrusion is interference-fitted with the charging pin.

5. The corrosion-resistant charging structure according to claim 2, characterized in that, The charging pin includes a head, a tail, and an electrical connection segment located between the head and the tail; the tail is connected to the charging base body. The water removal structure also includes a head protective sleeve, which wraps around the head and is an insulating structure; or / and The water removal structure also includes a tail protective sleeve, which is sleeved around the tail and extends at least to the connection between the tail and the charging base body. The tail protective sleeve has an insulating structure.

6. The corrosion-resistant charging structure according to claim 5, characterized in that, After the second charging unit is docked with the first charging unit, the erasing part is at least partially fitted around the outer periphery of the tail protective sleeve and at least partially in contact with the outer surface of the tail protective sleeve.

7. The corrosion-resistant charging structure according to claim 5, characterized in that, The water removal structure also includes: A water-proof sleeve is provided on the periphery of the head. The water-proof sleeve includes a main body that is sleeved on the periphery of the head protective sleeve and a second protrusion that protrudes from the periphery of the main body. The second protrusion is used to interfere with the charging port.

8. The corrosion-resistant charging structure according to claim 3, characterized in that, The charging plug is provided with a drainage groove; During the docking process between the second charging unit and the first charging unit, the water removed by the water removal structure from the first charging unit and / or the second charging unit can be discharged through the drainage channel.

9. The corrosion-resistant charging structure according to claim 8, characterized in that, The drainage channel includes a first drainage channel and a second drainage channel that are interconnected. The first drainage channel is formed on the surface of the base and is connected to the charging port. The second drainage channel is formed on the side surface of the plug body facing the second charging part. When the first charging unit and the second charging unit are connected, the water in the charging hole is discharged sequentially through the first drainage channel and the second drainage channel.

10. The corrosion-resistant charging structure according to claim 7, characterized in that, A waterproof pad is provided inside the charging port, and the waterproof pad at least covers the bottom of the charging port. After the second charging part is connected to the first charging part, the second protrusion is interference-fitted with the waterproof pad.

11. A cleaning device, characterized in that, The device includes a charging device, a cleaning robot, and a corrosion-resistant charging structure as described in any one of claims 1 to 10, wherein the charging base is disposed on the cleaning robot, and the charging plug is disposed on the charging device.

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