Waterproof power adapter

Abstract

The utility model discloses a waterproof power adapter which comprises a shell and a power supply assembly, the shell comprises an upper cover and a lower shell, and the upper cover and the lower shell are connected in an adaptive manner to form an internal cavity for accommodating the power supply assembly; the edge part of the upper cover is provided with an ultrasonic line, the ultrasonic line surrounds the connecting edge where the upper cover is in contact with the lower shell, and the position, corresponding to the ultrasonic line, of the lower shell is provided with an ultrasonic line groove; wire passing grooves are symmetrically formed in the two sides of the upper cover and the two sides of the lower shell, the wire passing grooves comprise first grooves formed in the lower shell and second grooves formed in the upper cover, the first grooves intersect with the ultrasonic wire grooves so that the ultrasonic wire grooves can be interrupted, first connecting parts in butt joint can be formed on the two sides of the first grooves, and second connecting parts in butt joint can be formed on the two sides of the second grooves. The first connecting part is in arc-shaped concave transition, the second groove is intersected with the ultrasonic line, so that the ultrasonic line is interrupted, a second connecting part which is in butt joint is formed on the two sides of the second groove, and the second connecting part is in arc-shaped convex transition; the waterproof performance is excellent.

Description

Technical Field

[0001] This utility model relates to the field of power adapter technology, specifically a waterproof power adapter. Background Technology

[0002] In today's era of high integration of digitalization and electrification, electronic devices have deeply penetrated all aspects of people's lives, work, and industrial production. As the "energy supply station" for the stable operation of electronic devices, the performance of power adapters directly affects the reliability and durability of the entire equipment system. Especially with the increasingly diverse and complex usage scenarios, waterproof performance has become a crucial indicator that cannot be ignored in the design of power adapters.

[0003] Looking back at the traditional power adapter casing structure and assembly process, common connection methods, such as screw fastening mechanisms, were once widely used. From a manufacturing convenience perspective, screw fastening has the advantages of simple operation and relatively controllable cost. During assembly, the threaded engagement of the screw and the screw hole can tightly fit the top cover and the bottom shell, initially achieving the purpose of stabilizing the casing structure and protecting the internal power components. However, once put into actual operating environments, drawbacks gradually become apparent. In scenarios where adapters are frequently plugged and unplugged, or when the equipment is under continuous vibration, such as outdoor portable electronic devices during transportation or power adapters next to motor-driven equipment in industrial workshops, the screws are subjected to repeated force and vibration impacts, and the interlocking force between the threads gradually weakens, inevitably leading to loosening. Loose screws can no longer maintain a tight fit between the top cover and the bottom shell, and the originally tiny gaps in the casing expand, undoubtedly opening the "door" for external moisture, dust, and various impurities to enter. Once moisture seeps in, it accumulates on the circuit board of the power supply component, which may cause serious problems such as short circuits and corrosion of solder joints, significantly reducing the lifespan of the power adapter, and even causing equipment failure and shutdown in a short period of time, resulting in a lot of inconvenience and economic losses.

[0004] Snap-fit ​​connections, another traditional assembly method, are still used in some low- to mid-range power adapters due to their efficiency and lack of the need for additional tools. The design cleverly incorporates matching snap-fit ​​and slot structures along the edges of the top and bottom covers, allowing for quick assembly by pressing. However, this connection method also has significant drawbacks. Snap-fits are mostly made of plastic, and over long-term use, exposure to ultraviolet radiation (such as in outdoor environments), temperature changes (repeated switching from cold outdoor to warm indoor environments), and frequent opening and closing forces can cause them to age and become brittle, leading to decreased mechanical strength and impaired elastic deformation. Once the snap-fit ​​loses its original shape accuracy and elastic recovery ability, gaps will appear between the snap-fit ​​and slot, compromising the overall seal of the casing and failing to effectively prevent moisture penetration, thus failing to meet waterproofing requirements.

[0005] Focusing on the cable management design of traditional power adapters, previous cable channels were simply straight grooves carved into the casing. They focused solely on physically connecting internal and external cables for signal and power transmission, severely neglecting the synergistic integration of the cable channel with the overall waterproof structure of the casing. This rudimentary design makes the cable passage point the weakest link in the waterproof system. During daily use, moisture easily accumulates at the contact point between the cable and the inner wall of the cable channel. Utilizing the texture and gaps in the cable sheath and the unavoidable tiny gaps in the rough inner wall of the cable channel, moisture slowly and continuously seeps into the internal cavity, creating a "penetration channel." Over time, the power components are exposed to a humid environment, leading to corrosion of circuit components and a sharp increase in the risk of short circuits, seriously threatening the normal operation and lifespan of the power adapter.

[0006] Therefore, it is necessary to propose an improved technical solution to address the above problems. Utility Model Content

[0007] To overcome the shortcomings mentioned above, this utility model aims to provide a technical solution that can solve the above problems.

[0008] A waterproof power adapter includes a housing and a power assembly, the housing including an upper cover and a lower cover, the upper cover and the lower cover being adapted to form an internal cavity for accommodating the power assembly;

[0009] The edge of the upper cover is provided with an ultrasonic line, which surrounds the connecting edge of the upper cover and the lower shell. The lower shell is provided with an ultrasonic line groove at the position corresponding to the ultrasonic line.

[0010] The upper cover and lower shell are symmetrically provided with wire grooves on both sides. The wire grooves include a first groove in the lower shell and a second groove in the upper cover. The first groove intersects with the ultrasonic wire groove, so that the ultrasonic wire groove is interrupted and a first connecting part is formed on both sides of the first groove. The first connecting part has an arc-shaped concave transition. The second groove intersects with the ultrasonic wire, so that the ultrasonic wire is interrupted and a second connecting part is formed on both sides of the second groove. The second connecting part has an arc-shaped convex transition, and the second connecting part corresponds to the first connecting part.

[0011] The ultrasonic line extends to the side of the second connector away from the second groove.

[0012] As a further embodiment of this utility model: the first groove intersects with the ultrasonic groove, and the ultrasonic groove is interrupted in the intersection area to form two independent first connecting parts, and the two first connecting parts are symmetrically distributed about the central axis of the first groove;

[0013] The second groove intersects with the ultrasonic line, and the ultrasonic line is interrupted in the intersection area to form two independent second connecting parts, and the two second connecting parts are symmetrically distributed about the central axis of the second groove;

[0014] The second connecting part and the corresponding first connecting part are engaged and fitted together when the upper cover and lower shell are closed.

[0015] As a further embodiment of this utility model: the ultrasonic line extends continuously along the side of the second connecting part away from the second groove, and the extended portion of the ultrasonic line maintains the original cross-sectional shape and linear direction.

[0016] As a further embodiment of this utility model: the ultrasonic line is arranged in a continuous or discontinuous linear protrusion around the connecting edge of the upper cover and the lower shell, the ultrasonic line groove is a recessed structure that fits the shape of the ultrasonic line, and is distributed around the contact edge of the lower shell and the upper cover, and the depth of the ultrasonic line groove is not less than the height of the ultrasonic line.

[0017] As a further embodiment of this utility model: wires corresponding to the power supply components and used to realize electrical connection are arranged through the wire grooves symmetrically arranged on both sides of the upper cover and the lower shell, and a sealing ring is tightly fitted around the outer periphery of the wires;

[0018] When the top cover and the bottom shell are closed, the first groove and the second groove are engaged to form a space for the wire passage groove. The first connecting part and the second connecting part are mated together to compress the wire with the sealing ring, causing the sealing ring to deform and fill the gap between the wire and the wire passage groove.

[0019] As a further embodiment of this utility model: the connecting edge of the lower shell and the upper cover that are in contact with each other protrudes outward to form an annular skirt portion, and a sealing groove is provided at the skirt portion. The sealing groove includes a first sealing groove and a second sealing groove that are spaced apart from the outside to the inside, and the second sealing groove is the ultrasonic groove.

[0020] As a further embodiment of this utility model: the connecting edges of the lower shell and the upper cover that come into contact with each other are respectively provided with an outward protrusion to form a first and a second annular skirt;

[0021] A first limiting stop and a second limiting stop are protruding on the end face of the first skirt, and the ultrasonic groove is formed between the first limiting stop and the second stop.

[0022] A third limiting stop and a fourth limiting stop are protruding on the end face of the second skirt, and the third limiting stop and the fourth limiting stop together form a first sealing groove;

[0023] The first sealing groove is mated with the first limiting stop, and the ultrasonic wire groove is mated with the fourth limiting stop, wherein the ultrasonic wire is disposed on the fourth limiting stop.

[0024] As a further embodiment of the present invention: the first sealing groove, the third blocking edge and the fourth blocking edge are provided with a second groove and a corresponding second connecting part;

[0025] The ultrasonic groove, the first blocking edge, and the second blocking edge are all provided with a first groove and a corresponding first connecting part.

[0026] As a further embodiment of this utility model: a first limiting wall and a second limiting wall are respectively provided on the inner walls of the first groove and the second groove;

[0027] When the upper cover and lower shell are closed, both the first and second limiting walls compress the wire and connect to form a limiting abutment structure that acts on the sealing ring.

[0028] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0029] 1) The tight and seamless connection of the shell achieved by ultrasonic welding completely eliminates the gaps caused by loosening and aging under traditional connection methods (screw fastening, snap connection), cutting off the channels for moisture and dust to enter through such gaps. The waterproof system built by the cable tray with the "fitting connection between the second groove of the upper cover and the first groove of the lower shell", the "synergistic cooperation between the ultrasonic wire and the ultrasonic cable tray", and the "sealable effect of ultrasonic welding" overcomes the stubborn problem of weak waterproofing of traditional straight-through cable trays. It strengthens waterproofing from the key part of cable entry and exit, greatly reducing the risk of short circuits and corrosion of power components due to water immersion. The waterproofing capability is a qualitative leap compared to conventional power adapters, which is sufficient to cope with complex and harsh usage scenarios such as outdoor rain and moisture in humid workshops.

[0030] 2) Excellent waterproof performance and reliable housing structure complement each other. With its superior waterproof performance, it reduces electrical downtime caused by water. The robust structure ensures stable power transmission, so that even when outdoor portable devices are subjected to harsh tests such as bumpy transportation and complex working conditions in industrial workshops, the power adapter can always deliver stable power to electronic devices, effectively improving the reliability and long-term service capability under complex working conditions, and ensuring the stable and efficient operation of the equipment system.

[0031] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0033] Figure 1 This is a schematic diagram of the structure of this utility model;

[0034] Figure 2 This is a schematic diagram of the wire channel structure in this utility model;

[0035] Figure 3 This is a schematic diagram of the structure of the upper cover in this utility model;

[0036] Figure 4 This is a schematic diagram of the lower shell structure of this utility model;

[0037] Figure 5 This is a schematic diagram of the structure of the lower shell and the power supply assembly in this utility model;

[0038] Figure 6 This is a cross-sectional structural schematic diagram of this utility model from one perspective;

[0039] Figure 7 This is a cross-sectional structural schematic diagram from another perspective of this utility model.

[0040] The reference numerals and names in the figure are as follows:

[0041] 1. Housing; 2. Power supply assembly; 3. Top cover; 4. Bottom housing; 5. Ultrasonic wire; 6. Ultrasonic wire groove; 7. Wire passage groove; 8. First groove; 9. Second groove; 10. First connecting part; 11. Second connecting part; 12. Wire; 13. Sealing ring; 14. Skirt part; 15. First sealing groove; 16. First skirt; 17. Second skirt; 18. First limiting stop edge; 19. Second limiting stop edge; 20. Third limiting stop edge; 21. Fourth limiting stop edge; 22. First limiting wall; 23. Second limiting wall. Detailed Implementation

[0042] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0043] Please see Figure 1-7In this embodiment of the present invention, a waterproof power adapter includes a housing 1 and a power assembly 2. The housing 1 includes an upper cover 3 and a lower cover 4, which are adapted to form an internal cavity for accommodating the power assembly 2.

[0044] The edge of the upper cover 3 is provided with an ultrasonic line 5, which surrounds the connecting edge of the upper cover 3 and the lower shell 4. The lower shell 4 is provided with an ultrasonic line groove 6 at the position corresponding to the ultrasonic line 5.

[0045] The upper cover 3 and the lower shell 4 are symmetrically provided with wire grooves 7 on both sides. The wire grooves 7 include a first groove 8 provided in the lower shell 4 and a second groove 9 provided in the upper cover 3. The first groove 8 intersects with the ultrasonic wire groove 6, so that the ultrasonic wire groove 6 is interrupted and a first connecting part 10 is formed on both sides of the first groove 8. The first connecting part 10 has an arc-shaped concave transition. The second groove 9 intersects with the ultrasonic wire 5, so that the ultrasonic wire 5 is interrupted and a second connecting part 11 is formed on both sides of the second groove 9. The second connecting part 11 has an arc-shaped convex transition, and the second connecting part 11 corresponds to the first connecting part 10.

[0046] The ultrasonic line 5 extends to the side of the second connecting part 11 away from the second groove 9.

[0047] In this utility model technical solution, at the connecting edge where the upper cover 3 and the lower shell 4 are in contact, the upper cover 3 is provided with an ultrasonic line 5. The ultrasonic line 5 is distributed around this edge, and its cross-section presents a regular geometric shape (such as a triangle, a semi-circle, or other common shapes) to ensure full and stable contact with the corresponding part of the lower shell 4. The ultrasonic line groove 6 at the corresponding position of the lower shell 4 has a concave shape that precisely matches the convex shape of the ultrasonic line 5, and its depth is designed to be no less than the height of the ultrasonic line 5 to ensure that there is enough space to accommodate the ultrasonic line 5 and achieve full fusion in the subsequent ultrasonic welding process.

[0048] During the ultrasonic welding process, the equipment emits stable ultrasonic vibrations at a specific frequency (usually in the range of 15kHz - 40kHz), causing rapid friction at the point where the ultrasonic wire 5 and the ultrasonic groove 6 are in close contact. This high-frequency friction generates a large amount of heat, which is sufficient to rapidly heat up the plastic material (the upper cover 3 and the lower shell 4 are often made of polycarbonate, acrylonitrile-butadiene-styrene copolymer, and other plastics with good ultrasonic welding performance) to the contact area to a molten state. The plastic molecules in the molten state become active, and the molecules at the ultrasonic wire 5 and the ultrasonic groove 6 diffuse, intertwine, and entangle with each other. When the ultrasonic vibration stops and the temperature cools down, the two are firmly bonded together, forming a continuous and seamless sealing connection at the edge of the shell 1. This effectively prevents external moisture, dust, and other foreign objects from entering the internal cavity through the gaps in the shell 1, ensuring a safe and clean working environment for the internal power supply component 2.

[0049] To achieve internal and external cable connection and ensure waterproofing, symmetrical cable passage grooves 7 are designed on both sides of the housing 1. The cable passage groove 7 is composed of a first groove 8 in the lower housing 4 and a second groove 9 in the upper cover 3. The first groove 8 is horizontally excavated in the lower housing 4 and intersects with the ultrasonic cable groove 6 in the extension path. This intersection causes the ultrasonic cable groove 6 to be interrupted here, and then the first connecting part 10 with an arc-shaped concave transition is naturally formed on both sides of the interruption area. This concave design is, on the one hand, in line with the physical direction of the cable when it passes through and through, reducing stress concentration; on the other hand, by utilizing the concave shape, combined with the adhesive and sealing properties of the material itself, after ultrasonic welding is completed, it forms an auxiliary interception and blocking effect on water that may seep in from the gap between the cable and the groove wall, preventing water from penetrating directly into the internal cavity.

[0050] The second groove 9 of the upper cover 3 also has a unique design ingenuity. It intersects with the ultrasonic line 5, forcing the ultrasonic line 5 to be interrupted to form a corresponding arc-shaped protrusion transition second connecting part 11. The arc of this protrusion precisely fits the depression of the first connecting part 10, and the two form a mutually supportive relationship. In addition, the ultrasonic line 5 extends to the side of the second connecting part 11 away from the second groove 9. When the ultrasonic welding tightly fits the upper and lower covers together, this extension further strengthens the seal (i.e., the butt seal of the first connecting part 10 and the second connecting part 11). In the overall structure of the cable tray 7, with the help of the fitting connection between the second groove 9 of the upper cover 3 and the first groove 8 of the lower shell 4, the synergistic cooperation between the ultrasonic line 5 and the ultrasonic cable tray 6, and the combined effect of the ultrasonic welding seal, the tiny gap between the cable and the wall of the cable tray 7 is effectively filled and sealed, preventing water from seeping inward along the texture of the cable sheath and the gaps in the inner wall of the cable tray, thus building a solid waterproof barrier.

[0051] In summary, the tight, seamless connection of the shell 1 achieved through ultrasonic welding completely eliminates gaps caused by loosening and aging in traditional connection methods (screw fastening, snap-fit ​​connections), cutting off channels for moisture and dust to enter through such gaps. Furthermore, the cable tray 7 utilizes the "fitting connection between the second groove 9 of the upper cover 3 and the first groove 8 of the lower shell 4," the "synergistic effect of the ultrasonic cable 5 and the ultrasonic cable tray 6," and the "sealing effect of ultrasonic welding." The constructed waterproof system overcomes the persistent problem of weak waterproofing in traditional straight-through cable trays 7. By strengthening waterproofing at the critical point of cable entry and exit, it greatly reduces the risk of short circuits and corrosion of the power supply component 2 due to water immersion. The waterproofing capability represents a qualitative leap compared to conventional power adapters, and is sufficient to cope with complex and harsh usage scenarios such as outdoor rain and humid workshops. The excellent waterproof performance and the reliable housing structure complement each other. With its superior waterproof performance, it reduces electrical failures and downtime caused by water. The robust structure ensures stable power transmission, so that even when portable outdoor devices are subjected to bumpy transportation and complex working conditions in industrial workshops, the power adapter always delivers stable power to electronic devices, effectively improving the reliability and long-term service capability under complex working conditions, and ensuring the stable and efficient operation of the equipment system.

[0052] In this embodiment of the present invention, the first groove 8 intersects with the ultrasonic groove 6, and the ultrasonic groove 6 is interrupted in the intersection area to form two independent first connecting parts 10, and the two first connecting parts 10 are symmetrically distributed about the central axis of the first groove 8.

[0053] The second groove 9 intersects with the ultrasonic line 5, and the ultrasonic line 5 is interrupted in the intersection area to form two independent second connecting parts 11, and the two second connecting parts 11 are symmetrically distributed about the central axis of the second groove 9.

[0054] The second connecting part 11 and the corresponding first connecting part 10 are engaged and fitted together when the upper cover 3 and the lower shell 4 are closed.

[0055] To ensure the cable is connected to the inside and outside and is waterproof, the cable tray 7 is composed of the first groove 8 of the lower shell 4 and the second groove 9 of the upper cover 3. The two sides are symmetrically distributed to balance the force and the neatness of the wiring. The first groove 8 runs horizontally through the lower shell 4 and intersects with the ultrasonic cable tray 6. This intersection causes the ultrasonic cable tray 6 to be interrupted, forming two independent first connecting parts 10 that are symmetrically distributed about the central axis of the first groove 8. This symmetrical layout fits the mechanical distribution of the cable and avoids uneven force on one side. At the same time, it is combined with the existing waterproof isolation characteristics of the ultrasonic cable tray 6 to intercept possible water seepage by using the concave shape and prevent it from directly entering the internal cavity.

[0056] The second groove 9 of the upper cover 3 intersects with the ultrasonic line 5, causing the ultrasonic line 5 to be interrupted to form two independent second connecting parts 11 symmetrical about the central axis of the second groove 9. The protrusion shape of the second connecting part 11 corresponds to the concavity of the first connecting part 10. When the upper cover 3 and the lower cover are closed, the second connecting part 11 and the corresponding first connecting part 10 are precisely aligned and matched. The ultrasonic line 5 extends to the side of the second connecting part 11 away from the second groove 9 to strengthen the seal. With the help of "the intersection of the first groove 8 and the ultrasonic line groove 6 and the formation of the symmetrical first connecting part 10", "the intersection of the second groove 9 and the ultrasonic line 5 and the formation of the symmetrical second connecting part 11", "the closing and matching of the upper and lower connecting parts", and "the ultrasonic welding sealing effect", the gap between the cable and the groove wall is filled, and the moisture penetration path is locked.

[0057] In this embodiment of the present invention, the ultrasonic line 5 extends continuously along the side of the second connecting part 11 away from the second groove 9, and the extended portion of the ultrasonic line 5 maintains the original cross-sectional shape and linear direction.

[0058] Because the ultrasonic line 5 maintains its original cross-sectional shape and linear orientation, during the ultrasonic welding process, the extended ultrasonic line 5 can effectively perform ultrasonic welding with the first connecting part 10 and its surrounding area. This design means that the connection between the first connecting part 10 and the second connecting part 11 no longer relies solely on simple mechanical bonding, but rather achieves material fusion through ultrasonic welding to form a tight sealing structure, thereby effectively preventing moisture from seeping into the power adapter from this critical wire groove 7. The unique arc-shaped concave transition shape of the first connecting part 10 also complements the extended ultrasonic line 5, using the concave shape to guide contact, and achieving sealing through tight bonding and ultrasonic energy-induced molecular fusion.

[0059] In this embodiment of the present invention, the ultrasonic line 5 is arranged in a continuous or discontinuous linear protrusion around the connecting edge of the upper cover 3 and the lower shell 4. The ultrasonic line groove 6 is a recessed structure that fits the shape of the ultrasonic line 5 and is distributed around the contact edge of the lower shell 4 and the upper cover 3. The depth of the ultrasonic line groove 6 is not less than the height of the ultrasonic line 5.

[0060] The housing 1 of this waterproof power adapter consists of an upper cover 3 and a lower cover 4. Ultrasonic wires 5 are arranged in a continuous or discontinuous linear protrusion around the edge of the upper cover 3. This design aims to precisely fit the ultrasonic wire grooves 6 corresponding to the edge of the lower cover 4. The ultrasonic wire grooves 6, as recessed structures, are also fully distributed around the contact edge between the lower cover 4 and the upper cover 3, and their depth is not less than the height of the ultrasonic wires 5. This dimensional matching ensures that when the two are joined together for welding, the ultrasonic wires 5 can be fully and tightly embedded in the ultrasonic wire grooves 6. During ultrasonic welding, the ultrasonic equipment applies high-frequency mechanical vibration, causing the ultrasonic wires 5 and the ultrasonic wire grooves 6 to fit tightly together. The plastic molecules in the part move violently and rub against each other. Because the two fit together tightly, energy can be efficiently transferred to the contact area, causing the plastic to soften, melt and fuse together. Finally, the upper cover 3 and the lower shell 4 form a strong and seamless integral structure at the connection edge, building a solid barrier against the intrusion of external moisture and impurities. In the wire groove 7 part, although the ultrasonic wire 5 is interrupted to form a connection part, the connection part is made possible by the surrounding welding of the ultrasonic wire 5 and the ultrasonic wire groove 6, combined with the special design and welding synergy of the connection part, ensuring that the wire groove 7 area is also integrated into the waterproof sealing system, which complements the overall waterproof design of the shell 1.

[0061] In this embodiment of the utility model, a wire 12 corresponding to the power supply component 2 and used to realize electrical connection is arranged through the wire groove 7 symmetrically arranged on both sides of the upper cover 3 and the lower shell 4, and a sealing ring 13 is tightly fitted around the outer periphery of the wire 12.

[0062] When the upper cover 3 and the lower shell 4 are closed, the first groove 8 and the second groove 9 are engaged to form a space for the wire passage groove 7. The first connecting part 10 and the second connecting part 11 are mated together to compress the wire 12 on which the sealing ring 13 is sleeved, causing the sealing ring 13 to deform and fill the gap between the wire 12 and the wire passage groove 7.

[0063] At the symmetrical wire grooves 7 on both sides of the housing 1, there are through wires 12 for electrical connection of the power supply component 2. The outer periphery of the wires 12 is tightly fitted with sealing rings 13. When the upper cover 3 and the lower housing 4 are assembled, the first groove 8 of the lower housing 4 and the second groove 9 of the upper cover 3 are precisely matched and locked together to form the space for the wire groove 7, allowing the wires 12 to pass through in an orderly manner. At the same time, the second connection part 11 formed by the interruption of the ultrasonic wire 5 and the first connection part 10 formed by the interruption of the ultrasonic wire groove 6 are connected and cooperated to squeeze the wires 12 fitted with sealing rings 13 from both sides. This compression causes the sealing rings 13 to deform. According to the elastic properties of the material, it fills the tiny gaps between the wires 12 and the wall of the wire groove 7 caused by manufacturing tolerances, irregularities of the wire skin, etc. The ultrasonic welding seal and the sealing rings 13 at the wire groove 7 work together to lock the possible penetration paths of moisture in multiple dimensions, and comprehensively protect the internal power supply component 2 from external moisture.

[0064] In this embodiment of the utility model, the connecting edge of the lower shell 4 and the upper cover 3 that are in contact with each other is provided to form an annular skirt 14. A sealing groove is provided at the skirt 14. The sealing groove includes a first sealing groove 15 and a second sealing groove that are arranged at intervals from the outside to the inside. The second sealing groove is the ultrasonic groove 6.

[0065] The connecting edges of the lower shell 4 and the upper cover 3 that come into contact with each other are respectively provided with an outward protrusion to form a first skirt 16 and a second skirt 17 in an annular shape;

[0066] A first limiting stop 18 and a second limiting stop 19 are protruding on the end face of the first skirt 16, and the ultrasonic groove 6 is formed between the first limiting stop 18 and the second stop.

[0067] A third limiting edge 20 and a fourth limiting edge 21 are protruding on the end face of the second skirt edge 17, and the third limiting edge 20 and the fourth limiting edge 21 enclose each other to form a first sealing groove 15;

[0068] The first sealing groove 15 is mated with the first limiting stop 18, and the ultrasonic wire groove 6 is mated with the fourth limiting stop 21, wherein the ultrasonic wire 5 is disposed on the fourth limiting stop 21.

[0069] For the housing 1 of the waterproof power adapter, the connecting edge of the lower shell 4 and the upper cover 3 protrudes outward to form an annular skirt 14. The skirt 14 increases the structural layers of the edge of the housing 1, which helps to strengthen the stability of the seal and connection. The skirt 14 is provided with a sealing groove, including a first sealing groove 15 and a second sealing groove spaced apart from the outside to the inside. The second sealing groove is an ultrasonic groove 6. The lower shell 4 and the upper cover 3 respectively protrude outward with an annular first skirt 16 and a second skirt 17, which cooperate with each other when they are closed.

[0070] A first limiting flange 18 and a second limiting flange 19 are protruding from the end face of the first skirt 16 of the lower shell 4, forming an ultrasonic groove 6. This structure can precisely define the position and shape of the ultrasonic groove 6, ensuring accurate docking with the corresponding structure of the upper cover 3. Similarly, a third limiting flange 20 and a fourth limiting flange 21 are protruding from the end face of the second skirt 17 of the upper cover 3, forming a first sealing groove 15. This first sealing groove 15 docks with the first limiting flange 18 of the lower shell 4, so that the sealing structure at the edges of the upper and lower covers can be connected in an orderly manner when they are closed. The ultrasonic line 5 is set on the fourth limiting edge 21. When the upper and lower covers are closed, the ultrasonic line 5 can be precisely aligned with the ultrasonic line groove 6 (that is, the second sealing groove). By applying high-frequency vibration through ultrasonic welding equipment, the plastic material at the contact part of the ultrasonic line 5 and the ultrasonic line groove 6 will fuse together under vibration, friction and appropriate pressure, so as to achieve a firm weld between the upper and lower covers at the connecting edge. At the same time, with the cooperation of the first sealing groove 15 and the third limiting edge 20, as well as the overall structure of the skirt part 14, multiple sealing defenses are built at the edge of the shell 1 to prevent external moisture, dust and other substances from seeping in from the edge.

[0071] In this embodiment of the utility model, the first sealing groove 15, the third blocking edge and the fourth blocking edge are provided with a second groove 9 and a corresponding second connecting part 11;

[0072] The ultrasonic groove 6, the first blocking edge, and the second blocking edge are provided with a first groove 8 and a corresponding first connecting part 10.

[0073] In the sealing design of the edge of the housing 1, the area formed by the first sealing groove 15, the third limiting stop 20 and the fourth limiting stop 21 is provided with a second groove 9 and its corresponding second connecting part 11. This means that while constructing the sealing system, the structural arrangement of the wire passage groove 7 is taken into consideration. When the upper and lower covers are closed, the second groove 9 cooperates with the structure (first groove 8) of the lower housing 4 to form a complete wire passage groove 7, and the second connecting part 11 docks with the first connecting part 10 to seal and fix the wire 12 passing through.

[0074] Similarly, the area formed by the ultrasonic wire groove 6, the first limiting stop 18, and the second limiting stop 19 is provided with a first groove 8 and its corresponding first connecting part 10. This layout makes the ultrasonic wire groove 6, while serving as a key structure for ultrasonic welding, also closely related to the formation of the wire passage groove 7. The cooperation of the first groove 8 and the second groove 9, as well as the docking of the first connecting part 10 and the second connecting part 11, ensure that the wire 12 can pass smoothly through the wire passage groove 7. Furthermore, the blocking effect of each limiting stop and the sealing effect of the sealing groove make it difficult for moisture to enter the interior from around the wire passage groove 7.

[0075] In this embodiment of the utility model, a first limiting wall 22 and a second limiting wall 23 protruding from the inner walls of the first groove 8 and the second groove 9 are respectively provided.

[0076] When the upper cover 3 and the lower shell 4 are closed, the first limiting wall 22 and the second limiting wall 23 both compress the wire 12 and connect to form a limiting abutment structure that acts on the sealing ring 13.

[0077] In the design of the cable passage 7 of the waterproof power adapter, the inner walls of the first groove 8 (located in the lower shell 4) and the second groove 9 (located in the upper cover 3) are respectively provided with a first limiting wall 22 and a second limiting wall 23. These two limiting walls are for precise positioning and compression of the wire 12 passing through in the cable passage 7.

[0078] When the upper and lower covers are closed, the first limiting wall 22 and the second limiting wall 23 apply pressure to the wire 12 from different directions. This squeezing action can not only fix the position of the wire 12 and prevent it from shaking or shifting in the wire groove 7, but also cause the sealing ring 13 to deform by squeezing the sealing ring 13 sleeved on the outer periphery of the wire 12.

[0079] At the same time, the first limiting wall 22 and the second limiting wall 23 are connected to each other to form a complete limiting and abutting structure that acts on the sealing ring 13. This limiting and abutting structure can effectively restrict the position of the sealing ring 13, ensuring that the direction and degree of deformation of the sealing ring 13 after being squeezed can better fill the gap between the wire 12 and the wire groove 7, thereby achieving a good sealing effect.

[0080] like Figure 2As shown, the cable passage 7 is generally concentrated in the lower shell 4 (the first connecting part 10 extends along the lower end of the upper cover 3, while the second groove 9 is formed between the two first connecting parts 10). The concentration of the cable passage 7 in the lower shell 4 helps to build a more concentrated waterproof defense, because the focus of waterproofing can be placed on the cooperation between the lower shell 4 and the upper cover 3 in the area of ​​the cable passage 7. For example, the first connecting part 10 is formed at the first groove 8 by the intersection with the ultrasonic cable passage 6, combined with the second connecting part 11 corresponding to the second groove 9 of the upper cover 3, and the compression of the sealing ring 13 by the limiting wall set in the inner wall of the groove, so that the waterproofing measures are more focused. This can effectively prevent water from seeping in from the key position of the cable entry and exit, and avoid the possible leakage due to the dispersion of the cable passage 7. This design addresses existing weak points in waterproofing, thereby improving the overall waterproof performance of the power adapter. Furthermore, the cable channel 7 design concentrated in the lower shell 4 makes the structure more compact and orderly. During assembly, the first groove 8 and other structures in the lower shell 4 provide more stable support and positioning for the cable. When closed with the upper cover 3, the connection between the upper and lower covers in the cable channel 7 area is tighter and more orderly, and the synergistic effect of each part is better utilized. For example, the docking of the first limiting wall 22 and the second limiting wall 23 forms a limiting abutment structure, which enhances the fixing effect on the cable. This makes the structure in the cable channel 7 area less prone to deformation or damage when the entire power adapter is subjected to external forces (such as plugging and unplugging, vibration, etc.), which helps to maintain the overall stability of the power adapter.

[0081] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention.

Claims

1. A waterproof power adapter, characterized in that, It includes a housing and a power assembly, the housing comprising an upper cover and a lower cover, the upper cover and the lower cover being adapted to form an internal cavity for accommodating the power assembly; The edge of the upper cover is provided with an ultrasonic line, which surrounds the connecting edge of the upper cover and the lower shell. The lower shell is provided with an ultrasonic line groove at the position corresponding to the ultrasonic line. The upper cover and lower shell are symmetrically provided with wire grooves on both sides. The wire grooves include a first groove in the lower shell and a second groove in the upper cover. The first groove intersects with the ultrasonic wire groove, so that the ultrasonic wire groove is interrupted and a first connecting part is formed on both sides of the first groove. The first connecting part has an arc-shaped concave transition. The second groove intersects with the ultrasonic wire, so that the ultrasonic wire is interrupted and a second connecting part is formed on both sides of the second groove. The second connecting part has an arc-shaped convex transition, and the second connecting part corresponds to the first connecting part. The ultrasonic line extends to the side of the second connector away from the second groove.

2. A waterproof power adapter according to claim 1, characterized in that, The first groove intersects with the ultrasonic groove, and the ultrasonic groove is interrupted at the intersection area to form two independent first connecting parts, and the two first connecting parts are symmetrically distributed about the central axis of the first groove. The second groove intersects with the ultrasonic line, and the ultrasonic line is interrupted in the intersection area to form two independent second connecting parts, and the two second connecting parts are symmetrically distributed about the central axis of the second groove; The second connecting part and the corresponding first connecting part are engaged and fitted together when the upper cover and lower shell are closed.

3. A waterproof power adapter according to claim 1, characterized in that, The ultrasonic line extends continuously along the side of the second joint away from the second groove, and the extended portion of the ultrasonic line maintains its original cross-sectional shape and linear orientation.

4. A waterproof power adapter according to claim 1, characterized in that, The ultrasonic line is arranged in a continuous or discontinuous linear protrusion around the connecting edge of the upper cover and the lower shell. The ultrasonic line groove is a recessed structure that fits the shape of the ultrasonic line and is distributed around the contact edge of the lower shell and the upper cover. The depth of the ultrasonic line groove is not less than the height of the ultrasonic line.

5. A waterproof power adapter according to claim 1, characterized in that, The wires corresponding to the power supply components and used to achieve electrical connection are arranged through the wire grooves located symmetrically on both sides of the upper cover and the lower shell, and a sealing ring is tightly fitted around the outer periphery of the wires; When the top cover and the bottom shell are closed, the first groove and the second groove are engaged to form a space for the wire passage groove. The first connecting part and the second connecting part are mated together to compress the wire with the sealing ring, causing the sealing ring to deform and fill the gap between the wire and the wire passage groove.

6. A waterproof power adapter according to claim 1, characterized in that, The connecting edge where the lower shell and the upper cover contact each other protrudes outward to form an annular skirt. A sealing groove is provided at the skirt. The sealing groove includes a first sealing groove and a second sealing groove that are spaced apart from the outside to the inside. The second sealing groove is the ultrasonic groove.

7. A waterproof power adapter according to claim 6, characterized in that, The connecting edges of the lower shell and the upper cover that come into contact with each other are respectively provided with outward protrusions to form a first and second annular skirt; A first limiting stop and a second limiting stop are protruding on the end face of the first skirt, and the ultrasonic groove is formed between the first limiting stop and the second stop. A third limiting stop and a fourth limiting stop are protruding on the end face of the second skirt, and the third limiting stop and the fourth limiting stop together form a first sealing groove; The first sealing groove is mated with the first limiting stop, and the ultrasonic wire groove is mated with the fourth limiting stop, wherein the ultrasonic wire is disposed on the fourth limiting stop.

8. A waterproof power adapter according to claim 6 or 7, characterized in that, The first sealing groove, the third blocking edge, and the fourth blocking edge are all provided with a second groove and a corresponding second connecting part; The ultrasonic groove, the first blocking edge, and the second blocking edge are all provided with a first groove and a corresponding first connecting part.

9. A waterproof power adapter according to claim 5, characterized in that, The inner walls of the first groove and the second groove are respectively provided with a protruding first limiting wall and a second limiting wall; When the upper cover and lower shell are closed, both the first and second limiting walls compress the wire and connect to form a limiting abutment structure that acts on the sealing ring.

Images