A socket panel waterproof structure, a protection door module and a waterproof socket thereof

Abstract

The application discloses a socket panel waterproof structure, a protection door module and a waterproof socket, and belongs to the technical field of socket waterproofing. The panel waterproof structure comprises at least a waterproof ring which forms a continuous annular protrusion around one socket hole, the root of the waterproof ring is fixed to the end face of the socket, the free end of the waterproof ring protrudes from the end face of the socket and has a radial dimension greater than that of the root, when the end face of the plug abuts against the free end, the waterproof ring generates radial elastic deformation with the root as the fixed end, so that the end face of the free end abuts against the end face of the plug to form a seal around the corresponding socket hole; the protection door module comprises a protection door cover, the outer end face of the protection door cover is provided with the waterproof ring and is provided with a mounting groove in which a first waterproof layer and a second waterproof layer are embedded; the waterproof socket comprises a shell, a base and the protection door module. The waterproof socket is compatible with the plug without the pin insulation sheath, and the waterproof grade and the electrical safety performance of the socket are significantly improved through the cooperation of the single-hole independent waterproof ring and the multi-stage internal waterproof layer.

Description

Technical Field

[0001] This invention belongs to the field of socket waterproofing technology, specifically relating to a waterproof structure for a socket panel, a protective door module, and a waterproof socket thereof. Background Technology

[0002] With the increasing diversification of household appliance usage scenarios, the need for waterproofing sockets in humid environments such as kitchens, bathrooms, and outdoors is becoming increasingly prominent. Current national standards stipulate that the base of the plug prongs must be covered with an insulating sleeve. Its core functions are twofold: first, to prevent human hands from touching live pins during insertion and removal; and second, to form a physical barrier at the base of the prongs, primarily preventing moisture from contacting the live parts at the base of the prongs, and secondly, reducing moisture entering the socket. However, many older plugs on the market still lack insulating sleeves at the base of the prongs. When used in humid environments, the live parts at the base of the prongs of these plugs are directly exposed to moisture, a major cause of leakage and short circuit accidents. Furthermore, existing socket panel waterproofing structures all adopt a "passive water ingress prevention" approach, which can only prevent moisture from entering the socket to a certain extent and cannot achieve targeted isolation of the live parts at the base of the prongs. Therefore, they cannot completely replace the safety protection function of the insulating sleeve at the plug end, resulting in significant safety hazards for plugs without insulating sleeves in humid environments such as kitchens, bathrooms, and outdoors. Summary of the Invention

[0003] To address the problems existing in the prior art, the present invention provides a waterproof structure for a socket panel, a protective door module, and a waterproof socket thereof, which provides better waterproofing for plugs without insulation material at the base.

[0004] The technical solution adopted in this invention is as follows:

[0005] In a first aspect, the present invention discloses a waterproof structure for a socket panel, which is disposed on the end face of the socket with a socket hole and abuts against the end face of the plug with pins when the plug is inserted into the socket. The structure includes a waterproof ring forming a continuous annular protrusion around at least one socket hole. The root of the waterproof ring is fixed to the end face of the socket with the socket hole. The free end of the waterproof ring on the opposite side of the root protrudes from the end face of the socket and the radial dimension of the free end is greater than the radial dimension of the root.

[0006] When the plug is inserted into the socket and the end face with the prongs presses against the free end of the waterproof ring, the waterproof ring undergoes radial elastic deformation with its root as the fixed end. The free end face abuts against the plug end face to form a full circumferential seal around the corresponding socket to enclose the root of the prongs in an independent sealed space.

[0007] In conjunction with the first aspect, the present invention provides a first embodiment of the first aspect, wherein an annular groove is provided around the insertion hole, and when the waterproof ring undergoes radially outward elastic deformation, the outer periphery of the waterproof ring is at least partially embedded in the annular groove to form a limiting position; when the waterproof ring undergoes radially inward elastic deformation, the inner periphery is close to the outer periphery of the insertion pin root to form an auxiliary seal.

[0008] In conjunction with the first aspect, the present invention provides a second embodiment of the first aspect, wherein the inner peripheral wall of the waterproof ring is provided with at least one annular strip protruding toward the center of the socket, and the annular strip abuts against the outer peripheral surface of the plug end face or the root of the plug when the plug end face presses against the waterproof ring, forming at least one auxiliary seal located inside the free end face or outside the root of the plug.

[0009] In conjunction with the first aspect, the present invention provides a third embodiment of the first aspect, wherein the waterproof ring and the socket cover are integrally formed, the cover is made of a hard material, and the waterproof ring is made of a soft elastic material.

[0010] In conjunction with the first aspect, the present invention provides a fourth embodiment of the first aspect, wherein the root of the waterproof ring is connected to the end face of the socket through a snap-fit ​​structure; the snap-fit ​​structure is: the root is provided with a connecting part and embedded in the mounting groove provided on the end face of the socket, or the root is provided with a flange and passes through the mounting hole provided on the end face of the socket for snap-fit ​​fixation.

[0011] In conjunction with the first aspect, the present invention provides a fifth embodiment of the first aspect, wherein when the end face of the plug abuts against the free end of the waterproof ring, a negative pressure adsorption is formed between the inner side of the waterproof ring and the end face of the plug.

[0012] In conjunction with the first aspect, the present invention provides a sixth embodiment of the first aspect, which further includes a first waterproof layer and a second waterproof layer disposed on the inner side of the socket cover, wherein the first waterproof layer and the second waterproof layer are separately disposed;

[0013] The first waterproof layer is a soft structure with several protrusions, which abuts against the inside of the socket and has a straight opening that is normally sealed. When the plug is inserted, it is pushed open and the inner surface of the protrusions fits against the outer circumference of the plug to form an annular seal. The second waterproof layer is a soft structure that protrudes downward and has a straight opening corresponding to the first-level structure of the protective door.

[0014] In conjunction with the first aspect, the present invention provides a seventh embodiment of the first aspect, which further includes a first waterproof layer and a second waterproof layer disposed on the inner side of the socket cover, wherein the first waterproof layer and the second waterproof layer are integrally formed and have a cavity inside.

[0015] The first waterproof layer has several raised soft structures and a straight opening that remains sealed under normal conditions. When the plug is inserted, the opening is pushed open and the inner surface of the raised structure is in contact with the outer circumference of the plug to form an annular seal. The second waterproof layer is a downwardly raised soft structure and has a straight opening corresponding to the first-level structure of the protective door. The cavity is used to trap water that seeps in from the first waterproof layer.

[0016] In conjunction with the first aspect, the present invention provides an eighth embodiment of the first aspect, wherein when the waterproof ring undergoes radially inward elastic deformation, its inner peripheral wall is close to the outer peripheral surface of the plug root, forming an auxiliary seal located on the outer periphery of the plug root, so as to further enhance the isolation and protection of the live parts at the plug root.

[0017] Secondly, the present invention provides a protective door module, including a protective door cover. The outer end face of the protective door cover is provided with a waterproof ring as described above in a socket panel waterproof structure. The protective door cover is also provided with an installation groove. A first waterproof layer and a second waterproof layer are embedded in the installation groove. Both the first waterproof layer and the second waterproof layer are soft waterproof structures with a normally sealed I-shaped opening.

[0018] Thirdly, the present invention provides a waterproof socket, including a housing, a base, and a socket panel waterproof structure disposed on the housing.

[0019] The beneficial effects of this invention are as follows:

[0020] This invention features an independently installed waterproof ring around each socket, with the radial dimension of the free end of the waterproof ring being larger than that of the root. Under pressure from the plug end face, radial elastic deformation occurs with the root as the fixed end, causing the free end face to fit tightly against the plug end face, forming a full-circumferential seal around the corresponding socket. This primarily completely encloses the root of the plug pins in an independent sealed space, isolating moisture from contact with the live parts at the root of the plug pins. Thus, it constructs a protective barrier at the root of the plug pins of plugs without insulating sleeves, replacing the insulating sleeve, eliminating the risk of leakage and short circuit at the source. At the same time, it is compatible with various plugs with and without insulating sleeves and prevents external moisture from entering the socket through the gap between the plug and socket end faces.

[0021] This invention provides an annular groove around the insertion hole, so that when the waterproof ring undergoes radial outward elastic deformation, its outer periphery is at least partially embedded in the annular groove. The annular groove limits the outer periphery of the waterproof ring, preventing it from excessively turning outward or shifting under repeated compression, thereby improving the stability and durability of the sealing structure.

[0022] The present invention provides an annular strip protruding toward the center of the socket on the inner peripheral wall of the waterproof ring. When the plug end face presses against the waterproof ring, the annular strip abuts against the plug end face and forms an auxiliary seal located inside the free end face. Thus, at least one inner auxiliary seal is formed on the basis of the first end face seal, constructing multiple waterproof barriers and further improving the reliability of the single hole independent seal.

[0023] This invention creates a negative pressure adsorption between the inner side of the waterproof ring and the end face of the plug when the end face of the plug presses against the free end of the waterproof ring. The negative pressure enhances the tightness of the fit between the end face of the plug and the socket, reduces the loosening gap caused by vibration or external force, and thus further improves the stability and sealing continuity of the plug connection.

[0024] This invention constructs a multi-level waterproof system inside the socket cover by separately setting a first waterproof layer and a second waterproof layer. The first waterproof layer uses its soft protruding structure and straight opening to form an annular seal when the plug is inserted. The second waterproof layer forms a secondary interception by corresponding to the first-level structure of the protective door through the downward protruding straight opening. This creates a multi-level waterproof system inside the panel end face. Even if a small amount of water vapor breaks through the panel end face, it can be blocked step by step inside the socket.

[0025] This invention integrates the first waterproof layer and the second waterproof layer into a cavity, which traps water that seeps into the first waterproof layer within the cavity, preventing the water from flowing further toward the live parts inside the socket. This achieves a double safety of water retention and internal interception, improving the safety of the socket in extremely humid environments.

[0026] This invention employs a protective door module with the aforementioned waterproof structure and places it inside the socket between the housing and the base, thereby creating a multi-level waterproof system from the inside out on the panel end face, the inside of the socket, and the protective door. This significantly improves the overall waterproof rating and electrical safety performance of the socket, making it suitable for various complex electrical environments such as humid and outdoor conditions. Attached Figure Description

[0027] Figure 1 This is a side view of the socket in an embodiment of the present invention;

[0028] Figure 2 This is an isometric view of the socket in an embodiment of the present invention;

[0029] Figure 3 This is the present invention. Figure 2 A magnified view of part A in the diagram;

[0030] Figure 4 This is a top view of the socket in an embodiment of the present invention;

[0031] Figure 5 This is the present invention. Figure 4A schematic diagram of the cross-section after being cut along section line AA;

[0032] Figure 6 This is a schematic diagram of the internal plan of the socket after the housing has been removed in an embodiment of the present invention;

[0033] Figure 7 This is an internal axial view of the socket after the housing has been removed in an embodiment of the present invention;

[0034] Figure 8 This is a schematic diagram of the internal structure of the socket after the housing has been removed in an embodiment of the present invention;

[0035] Figure 9 This is a schematic diagram of the structure of a waterproof ring in an embodiment of the present invention;

[0036] Figure 10 This is a schematic diagram of a socket with another integrated waterproof ring in an embodiment of the present invention;

[0037] Figure 11 This is an isometric schematic diagram of a socket with another integrated waterproof ring in an embodiment of the present invention;

[0038] Figure 12 This is an isometric schematic diagram of another integrated waterproof ring in an embodiment of the present invention.

[0039] In the diagram: 1-shell, 2-waterproof ring, 3-annular groove, 4-first waterproof layer, 5-second waterproof layer, 6-protective cover, 7-base, 8-mounting groove, 9-annular strip, 10-flange. Detailed Implementation

[0040] The present invention will be further explained below with reference to the accompanying drawings and specific embodiments.

[0041] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0042] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0043] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0044] In the description of this application, it should be noted that the use of terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" to indicate orientation or positional relationships is based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationships commonly used when the product is in use. These terms are used solely for the convenience of describing this application and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the use of terms such as "first" and "second" in the description of this application is only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0045] Furthermore, the use of terms such as "horizontal" and "vertical" in the description of this application does not imply that the component is required to be absolutely horizontal or suspended, but rather that it may be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but rather that it may be slightly tilted.

[0046] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0047] Example 1:

[0048] As one implementation method, this embodiment provides a waterproof structure disposed on the end face of the socket panel, which is used to form a seal by abutting against the end face of the plug when the plug is inserted.

[0049] Reference Figure 1 , Figure 2 , Figure 4 and Figure 5 The socket includes a housing 1 and a base 7. The housing 1 has a socket end face. A waterproof ring 2 is disposed on the socket end face with the socket and forms a continuous annular protrusion around at least one socket. The root of the waterproof ring 2 is fixed to the socket end face with the socket, and the free end of the waterproof ring 2 on the opposite side of the root protrudes from the socket end face, and the radial dimension of the free end is greater than the radial dimension of the root.

[0050] As an example, the waterproof ring 2 is made of thermoplastic elastomer material with a Shore A hardness of 50-70. The outer diameter of the root of the waterproof ring 2 is 8mm, the outer diameter of the free end is 12mm, the wall thickness at the root is 1.2mm, the wall thickness at the free end is 0.8mm, and the height protruding from the socket end face is 3-5mm. The cross-section of the waterproof ring 2 is flared outwards in a trumpet shape, with the trumpet opening facing outwards from the socket.

[0051] It should be understood that the waterproof ring 2 can be independently installed around a single socket, or it can be continuously installed around multiple adjacent sockets. Preferably, one waterproof ring 2 is installed for each socket to achieve independent sealing of each socket.

[0052] Working principle and process:

[0053] When the plug is inserted into the socket, the prong-side end of the plug presses against the free end of the waterproof ring 2. Because the radial dimension of the free end is larger than that of the root, and the waterproof ring 2 is made of elastic material, under axial pressure, the waterproof ring 2 undergoes radial elastic deformation with the root as the fixed end. The direction of deformation can be inward or outward.

[0054] Radial deformation: The free end of the waterproof ring 2 expands outward from the socket, and the end face is evenly flattened and tightly fitted to the end face of the plug, forming an annular sealing surface with a width of about 2-3mm, which completely wraps the root of the plug in the sealed space.

[0055] Radial inward deformation: The free end of the waterproof ring 2 shrinks toward the center of the socket, and the end face is also flattened and tightly fitted to the end face of the plug to form an annular sealing surface. At the same time, the inner periphery forms a line contact seal with the outer periphery of the root of the plug.

[0056] Both deformation methods can primarily isolate moisture from the live parts at the base of the plug, replacing the function of the insulating sleeve at the plug end, and preventing external moisture from entering the socket.

[0057] Effect verification:

[0058] Waterproofing tests were conducted using the waterproof structure of this embodiment. The test conditions were as follows: a plug without insulated prong sleeves was inserted into the socket, and tap water at a flow rate of 5 L / min was sprayed onto the plug-socket connection for 30 minutes. The test results showed that no water seeped into the socket, and the inside of the socket remained dry. As a comparison, a traditional socket without a waterproof ring was tested under the same conditions, and significant water accumulation appeared inside the socket within 5 minutes.

[0059] Under the same test conditions, the radially inward-deformed waterproof structure showed trace amounts of moisture at the base of the plug after 180 minutes of continuous spraying, while the radially outward-deformed structure remained dry at the base of the plug after 240 hours of continuous spraying. In the insertion and extraction life test, the radially inward-deformed waterproof ring showed slight deformation after 7,000 insertions and extractions, while the radially outward-deformed waterproof ring with an annular groove maintained its original sealing performance after 10,000 insertions and extractions. Therefore, the radially outward-deformed structure is a superior implementation, but the radially inward-deformed structure can also meet the requirements for use in humid environments specified in the standard.

[0060] Example 2:

[0061] This embodiment is a further improvement on the mating structure of the waterproof ring 2 based on embodiment 1.

[0062] Reference Figure 3 and Figure 9 An annular groove 3 is provided around the socket. The annular groove 3 is a groove that surrounds the socket, with a width of 1.5-2.5mm and a depth of 1.0-2.0mm, which is adapted to the outer periphery of the waterproof ring 2.

[0063] The inner circumferential wall of the waterproof ring 2 is provided with at least one annular strip 9 protruding towards the center of the insertion hole. In one embodiment, the annular strip 9 is integrally formed with the waterproof ring 2 and is made of the same material. The cross-section of the annular strip 9 is semi-circular or triangular, the protrusion height is 0.3-0.8mm, and the distance from the free end face of the waterproof ring 2 is 0.5-1.5mm.

[0064] Working principle and process:

[0065] When the plug end face presses against the free end of the waterproof ring 2:

[0066] If the waterproof ring 2 undergoes radial outward elastic deformation, its outer periphery will be at least partially embedded in the annular groove 3. The sidewall of the annular groove 3 forms a double limit on the waterproof ring 2 in both the axial and radial directions, preventing the waterproof ring from excessively turning outward or shifting during repeated insertion and removal.

[0067] If the waterproof ring 2 undergoes radial inward elastic deformation, its inner periphery will be close to the outer periphery of the plug root, forming two parallel auxiliary sealing lines together with the annular strip 9, further enhancing the protection of the plug root.

[0068] Meanwhile, regardless of the direction of deformation, the annular strip 9 will fit tightly against the plug end face under pressure, forming at least one auxiliary seal inside the first main seal. Even if a small amount of moisture breaks through the first main seal, it will be blocked outside the sealing space by the annular strip 9 and will not be able to contact the live parts at the base of the pins.

[0069] Effect verification:

[0070] Under the same waterproof test conditions, the sealing effects of Example 1 and this example were compared. Example 1 showed slight water seepage after 120 minutes of continuous spraying, while this example showed no water seepage after 240 hours of continuous spraying. In addition, an insertion and removal life test was conducted at a frequency of 6 insertions and removals per minute. The waterproof ring 2 of Example 1 showed obvious outward deformation at its free end after 5,000 insertions and removals, while the waterproof ring 2 of this example maintained its original shape after 10,000 insertions and removals, with its outer periphery always embedded in the annular groove 3.

[0071] Example 3:

[0072] This embodiment is a further improvement on the fixing method of the waterproof ring 2 based on embodiment 1.

[0073] In one implementation, the waterproof ring 2 is integrally injection molded with the socket cover. The cover is made of rigid plastic; for example, it is made of PC / ABS alloy material with a flexural modulus of not less than 2000 MPa. The waterproof ring 2 is made of soft elastic material; for example, it is made of thermoplastic elastomer TPE or silicone material with a Shore A hardness of 40-60 degrees, which is lower than the hardness of the cover material.

[0074] During the injection molding process, the rigid cover and the soft waterproof ring 2 are formed into an inseparable integral structure through a two-color injection molding process. The root of the waterproof ring 2 is fused with the end face of the cover, without seams or gaps. The thickness of the root of the waterproof ring 2 is 1.5-2.0mm, and the bonding width with the end face of the cover is not less than 2mm.

[0075] It should be understood that one-piece injection molding avoids the positioning deviation and loosening risks caused by secondary assembly. The waterproof ring 2 will not detach or rotate circumferentially during long-term use, improving the positional accuracy and structural stability of the waterproof ring 2.

[0076] Effect verification:

[0077] High and low temperature cycling tests were conducted, with test conditions ranging from -20℃ to 70℃, and 100 cycles were performed. In the comparison sample using snap-fit ​​waterproof rings, the base of the waterproof ring loosened after 80 cycles. However, in the one-piece injection molded sample of this embodiment, the waterproof ring 2 remained tightly bonded to the end face of the cover after 100 cycles, without peeling or displacement.

[0078] Example 4:

[0079] This embodiment provides an alternative implementation method for fixing the waterproof ring 2 based on embodiment 1.

[0080] Reference Figure 8 The base of the waterproof ring 2 is connected to the socket end face via a snap-fit ​​structure. As one implementation method, the snap-fit ​​structure includes two implementations.

[0081] The first implementation method is as follows: The waterproof ring 2 has a connecting part at its base, which is a continuous annular structure or several protruding structures. The socket end face has a mounting groove 8, which is an annular groove adapted to the connecting part, with a groove width of 1.0-1.5mm and a groove depth of 1.5-2.5mm. The connecting part is embedded in the mounting groove 8, achieving a snap-fit ​​fixation through an interference fit. The cross-section of the connecting part is circular or rectangular, and its size is slightly larger than the opening size of the mounting groove 8, forming a tight fit after embedding.

[0082] The second implementation method is as follows: A flange 10 is provided at the root of the waterproof ring 2, and the flange 10 is an enlarged end formed on the outer periphery of the root. The socket end face has a mounting hole, which can be a through hole or a blind hole. The flange 10 passes through the mounting hole and is clamped on the other side to achieve axial limiting. The diameter of the flange 10 is larger than the diameter of the mounting hole by 0.5-1.0 mm to ensure the tightness after clamping.

[0083] It should be understood that both of the above-mentioned snap-fit ​​structures enable the waterproof ring 2 to be detachable and replaceable, which facilitates individual maintenance when the waterproof ring 2 ages or is damaged, and reduces the overall replacement cost.

[0084] Effect verification:

[0085] A test was conducted on the replacement of the waterproof ring 2. The waterproof ring 2, which is fixed by a snap-fit ​​structure, can be disassembled and replaced within 30 seconds without the use of tools. A pull-out force test was conducted. The pull-out force of the snap-fit ​​method where the connecting part is embedded in the mounting groove 8 is 15-25N, and the pull-out force of the snap-fit ​​method where the flange 10 passes through the mounting hole is 20-35N. Both meet the fixing strength requirements for daily use.

[0086] Example 5:

[0087] This embodiment further illustrates the adsorption effect of the waterproof ring 2 based on embodiment 1.

[0088] In one implementation, the waterproof ring 2 is made of a soft, elastic material, with its free end face being either flat or slightly concave. When the plug end face presses against the free end of the waterproof ring 2, the waterproof ring 2 undergoes radially outward elastic deformation with its root as the fixed end. Because the waterproof ring 2 flares outward in a trumpet shape, a relatively closed cavity is formed between the plug end face and the inner side of the waterproof ring 2. As the plug end face continues to press down, the air within this cavity is gradually expelled, creating a negative pressure adsorption between the plug end face and the inner side of the waterproof ring 2.

[0089] It should be understood that the negative pressure adsorption enhances the tightness of the fit between the plug end and the socket end. Under the plug's own weight or slight external force, the plug is less likely to develop loose gaps, thereby further improving the stability and sealing continuity of the plug connection.

[0090] Effect verification:

[0091] A negative pressure adsorption force test was conducted. After inserting the plug into the socket, a tensile force was applied along the plug's axial direction. The comparison sample using a common flat waterproof ring showed obvious gaps under an axial tensile force of 5N, while the waterproof ring 2 of this embodiment maintained a tight fit at the end face even with an axial tensile force of 12-18N, without any visible gaps. Simultaneously, after vibrating for 30 minutes on a vibration test bench at a frequency of 50Hz and an amplitude of 1mm, the connection between the plug and socket in this embodiment remained secure, and the inside of the socket remained dry.

[0092] Example 6:

[0093] This embodiment is an improved scheme that adds an internal waterproof layer based on embodiment 1.

[0094] Reference Figure 5 , Figure 6 and Figure 7 The socket cover has a first waterproof layer 4 and a second waterproof layer 5 on the inside, and the first waterproof layer 4 and the second waterproof layer 5 are set separately.

[0095] The first waterproof layer 4 is a soft structure with several protrusions, made of silicone or rubber, with a thickness of 1.0-2.0 mm. The first waterproof layer 4 rests against the inside of the socket and has a straight opening that remains sealed under normal conditions. The length of this straight opening is 8-12 mm, and the width is 0 mm under normal conditions, held closed by the elasticity of the material. The protrusions of the first waterproof layer 4 extend towards the center of the socket, with a height of 2-4 mm. When the plug is inserted, the straight opening is opened, and the inner surface of the protrusions adheres to the outer circumference of the plug, forming a ring seal.

[0096] The second waterproof layer 5 is a downwardly protruding soft structure, made of the same or similar elastic material as the first waterproof layer 4. The second waterproof layer 5 has a straight opening corresponding to the primary structure of the protective door. This opening is normally sealed, but is simultaneously opened when the protective door is pushed open by the latch.

[0097] It should be understood that the first waterproof layer 4 and the second waterproof layer 5 are separate components, which facilitates their replacement and maintenance. The first waterproof layer 4 mainly blocks moisture from seeping in from the end face of the panel, while the second waterproof layer 5 acts as a secondary interception barrier, blocking trace amounts of water that may penetrate the first waterproof layer 4.

[0098] Effect verification:

[0099] A graded waterproofing test was conducted. Under continuous spraying conditions on the panel end face, the first waterproof layer 4 could block more than 95% of the infiltrated water when the plug was inserted. Under extreme conditions simulating damage to the first waterproof layer 4, the second waterproof layer 5 could still block more than 90% of the remaining water. With the two waterproof layers used together, the probability of water ingress into the live components inside the socket was reduced to below 0.1%.

[0100] Example 7:

[0101] This embodiment provides an alternative implementation method for the structural relationship between the first waterproof layer 4 and the second waterproof layer 5, based on embodiment 6.

[0102] Reference Figure 5 and Figure 7 The first waterproof layer 4 and the second waterproof layer 5 are integrally formed and have an internal cavity. The first waterproof layer 4 has several raised soft structures and a straight opening that remains sealed under normal conditions. When the pin is inserted, it is pushed open, and the inner surface of the raised structure fits against the outer circumference of the pin to form a ring seal. The second waterproof layer 5 is a downwardly raised soft structure and has a straight opening corresponding to the first-level structure of the protective door.

[0103] In one implementation, the first waterproof layer 4 and the second waterproof layer 5 are integrally molded into a single component using injection molding or compression molding. The cavity formed between them is an annular cavity with a height of 3-6 mm and a volume of 0.5-2.0 mL. This cavity is used to trap water that seeps into the first waterproof layer 4.

[0104] It should be understood that even if a small amount of moisture penetrates the first waterproof layer 4 on the panel end face, the infiltrated water will be trapped within the cavity, preventing it from continuing to flow towards the live components inside the socket. At the same time, the one-piece molded structure reduces seams and gaps during assembly, improving overall sealing reliability.

[0105] Effect verification:

[0106] A water retention capacity test was conducted. Water was continuously dripped into the inner side of the first waterproof layer 4 at a flow rate of 0.1 mL / min to simulate extreme seepage conditions. The test results showed that the infiltrated water was completely retained within the cavity, and no water penetrated the second waterproof layer 5 within 24 hours. As a comparative example, under the same conditions, in a split structure, some water seeped through the assembly gap between the first waterproof layer 4 and the second waterproof layer 5, and the internal water volume after 24 hours was 0.3-0.5 mL.

[0107] Example 8:

[0108] This embodiment discloses a socket protection door module, referring to... Figure 6 , Figure 7 and Figure 8 The protective door module includes a protective door cover 6. A waterproof ring 2 is provided on the outer end face of the protective door cover 6, and the structure of the waterproof ring 2 is the same as that in Embodiment 1. The protective door cover 6 also has a mounting groove 8, in which a first waterproof layer 4 and a second waterproof layer 5 are embedded.

[0109] In one embodiment, the protective door cover 6 is made of rigid plastic injection molding, and its outer end face has a structure integrally formed with the waterproof ring 2, or it has a snap-fit ​​structure similar to that in embodiment 4 to install the waterproof ring 2. The inner side of the protective door cover 6 has a mounting groove 8, which is an annular groove surrounding the insertion hole. The edges of the first waterproof layer 4 and the second waterproof layer 5 are embedded in the mounting groove 8 and fixed by interference fit or adhesive.

[0110] Both the first waterproof layer 4 and the second waterproof layer 5 are soft waterproof structures with normally sealed, straight-line openings. The straight-line opening of the first waterproof layer 4 corresponds to the position of the insertion hole, and the straight-line opening of the second waterproof layer 5 corresponds to the position of the primary structure of the protective door.

[0111] It should be understood that the protective door module integrates the waterproofing of the panel end face and the internal socket into an independent modular component. During socket assembly, the protective door module can be installed as a whole between the housing 1 and the base 7, improving assembly efficiency. In later maintenance, the protective door module can also be removed and replaced as a whole without disassembling each waterproof component separately.

[0112] Effect verification:

[0113] Modular assembly testing was conducted. The socket using the protective door module had a 40% shorter assembly time compared to the distributed waterproof structure. Module replacement testing was also conducted; the protective door module could be completely disassembled and replaced within 10 seconds, while the distributed waterproof structure required separate disassembly of the waterproof ring 2, the first waterproof layer 4, and the second waterproof layer 5, taking approximately 2-3 minutes.

[0114] Example 9:

[0115] This embodiment discloses a waterproof socket, as shown in the reference. Figures 1 to 8 The waterproof socket includes a housing 1, a base 7, and a protective door module disposed between the housing 1 and the base 7. The protective door module is the socket protective door module described in Embodiment 8.

[0116] In one embodiment, the housing 1 is a box-shaped structure with an open front end, injection molded from PC or ABS material. The front face of the housing 1 has an insertion hole, surrounded by a waterproof ring 2. The base 7 is a flat structure with terminal mounting positions and fixing holes. The housing 1 and the base 7 are connected by snap-fit ​​or screws, forming a cavity to accommodate the protective door module.

[0117] The outer end face of the protective door cover 6 of the protective door module abuts against the inner side of the front end face of the housing 1, and the waterproof ring 2 extends from around the insertion hole on the front end face of the housing 1. The first waterproof layer 4 and the second waterproof layer 5 are embedded in the mounting groove 8 on the inner side of the protective door cover 6. The protective door cover 6 also has a protective door structure inside, which is a spring-reset protective door in the prior art, including a primary protective door and a secondary protective door.

[0118] It should be understood that the waterproof socket in this embodiment forms a first seal on the panel end face through a waterproof ring 2, a second seal on the inside of the socket through a first waterproof layer 4, and a third seal at the protective door through a second waterproof layer 5, thus constructing a multi-level waterproof system from the inside out.

[0119] A comprehensive waterproof rating test was conducted. IPX4 splash test and IPX5 spray test were performed according to IEC 60529 standard. In the IPX4 test, water was splashed from all directions at a flow rate of 10 L / min for 10 minutes, and no water entered the socket. In the IPX5 test, water was sprayed from a distance of 3 meters at a flow rate of 12.5 L / min for 3 minutes, and the socket remained dry inside, with an insulation resistance greater than 100 MΩ, meeting safety requirements. As a comparison, a regular socket without the waterproof structure of this invention showed internal water accumulation after 5 minutes of the IPX4 test, and the insulation resistance dropped below 10 MΩ.

[0120] As another implementation method, refer to Figures 10 to 12 For the layout of the sockets in a five-hole socket, the waterproof ring 2 can also adopt an integrated multi-hole structure to reduce assembly steps and improve positioning accuracy.

[0121] As one implementation method, refer to Figure 10 and Figure 11 The five-hole socket includes a three-hole socket group and a two-hole socket group, wherein the top ground socket of the three-hole socket group is arranged side by side with the two sockets of the two-hole socket group. The waterproof ring 2 includes three annular protrusions that surround the three side by side sockets respectively. The three annular protrusions are integrally connected by connecting ribs to form an integral structure, and their roots are fixed to the end face of the socket with sockets.

[0122] Each annular protrusion has its free end protruding beyond the socket end face, and the radial dimension of the free end is greater than the radial dimension of the root. The thickness of the connecting rib between adjacent annular protrusions is less than the thickness of the root of the annular protrusion, allowing each annular protrusion to independently undergo radial outward elastic deformation with its root as the fixed end when pressed against the corresponding plug end face. The free end faces abut against the plug end face respectively, forming an independent seal around the corresponding socket. The width of the connecting rib is 1.0-2.0mm, and the thickness is 0.5-1.0mm, ensuring the integrity of the one-piece molded structure while preventing interference between adjacent annular protrusions during deformation.

[0123] It should be understood that the integrated multi-hole waterproof ring 2 can be integrally molded with the socket cover through two-color injection molding, or connected to the socket end face through the snap-fit ​​structure described in Embodiment 4. The integrated structure reduces the process of assembling individual waterproof rings separately, improves production efficiency, and maintains the independent sealing performance of each socket.

[0124] In another embodiment, the waterproof ring 2 includes five annular protrusions that surround all five holes of the five-hole socket. The five annular protrusions are integrally connected by connecting ribs to form an overall structure covering all the holes, and their roots are fixed to the socket end face. The arrangement of the five annular protrusions corresponds to the arrangement of the five holes of the five-hole socket. The free end of each annular protrusion protrudes from the socket end face and its radial dimension is greater than that of the root. The thickness of the connecting rib between adjacent annular protrusions is less than the thickness of the root, so that each annular protrusion can independently generate radially outward elastic deformation when pressed against the corresponding plug end face, forming an independent seal around the corresponding hole.

[0125] It should be understood that the integrated waterproof ring 2 is suitable for compact five-hole sockets with small socket spacing, further simplifying the assembly process. Assembly tests of the integrated waterproof ring 2 were conducted; for sockets using the three-socket integrated waterproof ring 2, the assembly time was reduced by 60% compared to three separate waterproof rings. Sealing performance tests were performed; under the same spray conditions, each annular protrusion effectively sealed the plug end face, with no water leakage inside the socket. Insertion and removal life tests were conducted; one socket was inserted and removed 6 times per minute, and after 10,000 cycles, the annular protrusions of adjacent sockets did not show any deformation or seal failure.

[0126] Furthermore, referring to Figure 9 and Figure 12 In the two ways of setting the waterproof ring 2, Figure 9 The middle waterproof ring 2 is a hollow ring structure, which forms a ring-shaped waterproof structure to prevent water and water vapor from entering and contacting the root of the plug.

[0127] and Figure 12 In this method, the interior of a single waterproof ring 2 is designed with a waterproof structure similar to the first waterproof layer 4. That is, the inner circumference of the waterproof ring 2 extends towards the middle and forms a seal. Only a gap is set in the middle corresponding to the internal socket. When no plug passes through, the gap in the middle of the waterproof ring 2 is closed. Even if water enters the annular sealing structure, it cannot directly enter the socket. When the plug is inserted into the socket, the plug passes through the waterproof ring 2 by squeezing through the gap. At the same time, the gap will wrap around the plug to achieve a sealing effect.

[0128] This invention is not limited to the optional embodiments described above, and anyone can derive other various forms of products based on the inspiration of this invention. The specific embodiments described above should not be construed as limiting the scope of protection of this invention; the scope of protection of this invention should be determined by the claims, and the specification can be used to interpret the claims.

Claims

1. A waterproof structure for a socket panel, disposed on the end face of the socket with a socket hole, and abutting against the end face of the plug with prongs when the plug is inserted into the socket, characterized in that: It includes a waterproof ring (2) that forms a continuous annular protrusion around at least one socket. The root of the waterproof ring (2) is fixed to the end face of the socket where the socket is located. The free end of the waterproof ring (2) on the opposite side of the root protrudes from the end face of the socket and the radial dimension of the free end is greater than the radial dimension of the root. When the plug is inserted into the socket and the end face with the prongs presses against the free end of the waterproof ring (2), the waterproof ring (2) produces radial elastic deformation with the root as the fixed end. The free end face and the plug end face are tightly abutted to form a full circumferential seal around the corresponding socket, completely enclosing the root of the prongs in an independent sealed space.

2. The waterproof structure for a socket panel according to claim 1, characterized in that: An annular groove (3) is provided around the insertion hole; when the waterproof ring (2) undergoes radial outward elastic deformation, the outer periphery of the waterproof ring (2) is at least partially embedded in the annular groove (3) to form a limit; when the waterproof ring (2) undergoes radial inward elastic deformation, the inner periphery is close to the outer periphery of the insertion root to form an auxiliary seal.

3. The waterproof structure for a socket panel according to claim 1, characterized in that: The inner circumferential wall of the waterproof ring (2) is provided with at least one annular strip (9) protruding towards the center of the socket. When the annular strip (9) presses against the waterproof ring (2) at the end face of the plug, it abuts against the end face of the plug or the outer circumferential surface of the root of the plug, forming at least one auxiliary seal located on the inner side of the end face of the free end or the outer circumference of the root of the plug.

4. The waterproof structure for a socket panel according to claim 1, characterized in that: The waterproof ring (2) is integrally formed with the socket cover. The cover is made of hard material, and the waterproof ring (2) is made of soft elastic material.

5. The waterproof structure for a socket panel according to claim 1, characterized in that: The root of the waterproof ring (2) is connected to the end face of the socket through a snap-fit ​​structure; the snap-fit ​​structure is: the root is provided with a connecting part and embedded in the mounting groove (8) provided on the end face of the socket, or the root is provided with a flange (10) and passes through the mounting hole provided on the end face of the socket for snap-fit ​​fixation.

6. The waterproof structure for a socket panel according to claim 1, characterized in that: When the plug end face presses against the free end of the waterproof ring (2), a negative pressure adsorption is formed between the inner side of the waterproof ring (2) and the plug end face.

7. A waterproof structure for a socket panel according to claim 1, characterized in that: It also includes a first waterproof layer (4) and a second waterproof layer (5) disposed on the inner side of the socket cover, wherein the first waterproof layer (4) and the second waterproof layer (5) are separately disposed; The first waterproof layer (4) is a soft structure with several protrusions, which abuts against the inside of the socket and has a straight opening that is normally sealed. When the plug is inserted, it is pushed open and the inner surface of the protrusions fits against the outer circumference of the plug to form an annular seal, so as to prevent water vapor from spreading along the outer circumference of the plug to the root of the plug; the second waterproof layer (5) is a soft structure that protrudes downward and has a straight opening corresponding to the first-level structure of the protective door.

8. The waterproof structure for a socket panel according to claim 1, characterized in that: It also includes a first waterproof layer (4) and a second waterproof layer (5) disposed on the inner side of the socket cover, wherein the first waterproof layer (4) and the second waterproof layer (5) are integrally formed and form a cavity inside; The first waterproof layer (4) has several protruding soft structures and a straight opening that is normally sealed. When the plug is inserted, it is pushed open and the inner surface of the protrusion is attached to the outer circumference of the plug to form an annular seal. The second waterproof layer (5) is a downward protruding soft structure and has a straight opening corresponding to the first-level structure of the protective door. The cavity is used to intercept water that seeps in from the first waterproof layer (4).

9. A protective door module, comprising a protective door cover (6), characterized in that: The outer end face of the protective door cover (6) is provided with a waterproof ring (2) as described in claim 1 for a waterproof structure of a socket panel. The protective door cover (6) is also provided with an installation groove (8). The installation groove (8) is inlaid with a first waterproof layer (4) and a second waterproof layer (5). The first waterproof layer (4) and the second waterproof layer (5) are both soft waterproof structures with a normally sealed one-line opening.

10. A waterproof socket, comprising a housing (1), a base (7), and a socket disposed on the housing (1), characterized in that: The housing (1) is provided with a waterproof socket panel structure as described in claim 1.

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