Waterproof power adapter
By adopting a combined structure of ultrasonic wire and ultrasonic wire slot in the power adapter, combined with ultrasonic welding and sealing ring design, the problem of loose shell and insufficient waterproof performance of traditional power adapters in vibrating environments is solved, and higher waterproofing capabilities are achieved and service life.
Patent Information
- Application Number
- CN202411754087.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-02
- Publication Date
- 2025-02-11
AI Technical Summary
In the frequent plug-in and vibration environments, the screw fastening and snap connection methods of traditional power adapters are easily loosened, resulting in the expansion of the shell gap and the inability to effectively protect against water, which in turn causes short circuits and corrosion problems and shortens the service life.
The combined structure of ultrasonic wire and ultrasonic wire trough is adopted, and the shell is tight and seamlessly connected through ultrasonic welding, and a sealing ring and a specific groove design are set at the through-line trough to ensure the waterproof performance of the cable entry and exit.
The sealing of the housing is achieved, prevents moisture and dust from entering, significantly reduces the risk of short circuit and corrosion of the power supply components, and improves the waterproofing ability and service life of the power adapter.
Smart Images
Figure CN119421365A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of power adapters, in particular to a waterproof power adapter. Background Art
[0002] In today's era of high integration of digitalization and electrification, electronic devices have deeply penetrated into various fields such as people's lives, work, and industrial production. The performance of the power adapter, as the "energy supply station" for the stable operation of electronic devices, is directly related to the reliability and durability of the entire equipment system. Especially as the usage scenarios become more diverse and complex, waterproof performance has become a key indicator that cannot be underestimated in the design of power adapters.
[0003] Looking back at the shell structure and assembly process of traditional power adapters, common connection methods, such as screw fastening mechanisms, have been widely used. From the perspective of manufacturing convenience, screw fastening has the advantages of simple operation process and relatively controllable cost. During assembly, the upper cover and the lower shell can be tightly fitted with the help of the threaded cooperation of the screws and the screw holes, and the purpose of initially stabilizing the shell structure and protecting the internal power components can be achieved. However, once put into the actual operating environment, the disadvantages are gradually exposed. In the scenario of frequent plugging and unplugging of adapters in daily life, or when the equipment is in a continuous vibration condition, such as outdoor portable electronic devices in transportation, and power adapters next to motor-driven equipment in industrial workshops, the screws are repeatedly subjected to force and vibration shocks, and the bite force between the threads will gradually decay, and loosening will inevitably occur. The loosened screws are difficult to maintain the tight fit between the upper cover and the lower shell, and the originally fine shell gap expands accordingly, which undoubtedly opens the "invasion door" for external moisture, dust and various impurities. After moisture seeps in, it accumulates on the circuit board of the power component, which may cause serious problems such as short circuits and corrosion of solder joints, significantly reducing the service life of the power adapter and even causing equipment failure and shutdown in a short period of time, bringing a lot of inconvenience and economic losses.
[0004] As another traditional assembly method, the snap connection method also occupies a place in some mid- and low-end power adapter products because it does not require additional tools and has efficient assembly. During the design, the buckle and slot structures that adapt to each other are cleverly arranged on the edges of the upper cover and the lower shell, and quick splicing and assembly can be achieved by pressing. However, the "shortcomings" of this connection method are also significant. The buckles are mostly made of plastic materials. During long-term use, they are affected by ultraviolet rays (such as outdoor scenes), temperature changes (repeated switching from cold outdoors to warm indoors), and frequent opening and closing external forces. The plastic buckles will age and become brittle, resulting in a decrease in its mechanical strength and damage to its elastic deformation ability. Once the buckle loses its original shape accuracy and elastic recovery ability, a gap will appear between the slot and the buckle, destroying the overall sealing of the shell, and it cannot effectively resist moisture penetration, making it difficult to meet waterproof requirements.
[0005] Focusing on the cable design of traditional power adapters, the previous cable troughs were just straight-through grooves carved on the shell, which only focused on achieving physical penetration of internal and external cables to facilitate signal and power transmission, but seriously neglected the coordinated integration of the cable trough and the overall waterproof structure of the shell. This simple design makes the cable passage the "weakest link" in the waterproof system. In daily use, moisture can easily accumulate at the contact point between the cable and the inner wall of the cable trough. With the help of the texture gaps of the cable sheath and the inevitable tiny gaps between the rough inner walls of the cable trough, it is like finding a "penetration channel" and slowly and continuously penetrates into the internal cavity. In the long run, the power supply components are in a humid environment for a long time, and the risk of circuit components being corroded and short circuits rises sharply, seriously threatening the normal operation and service life of the power adapter.
[0006] Therefore, it is necessary to propose an improved technical solution to solve the above problems. Summary of the invention
[0007] In order to overcome the above-mentioned shortcomings, the present invention aims to provide a technical solution that can solve the above-mentioned problems.
[0008] A waterproof power adapter comprises a housing and a power assembly, wherein the housing comprises an upper cover and a lower housing, wherein the upper cover and the lower housing are adapted to be connected to form an internal cavity for accommodating the power assembly; An ultrasonic line is provided at the edge of the upper cover, the ultrasonic line surrounds the connecting edge where the upper cover contacts the lower shell, and an ultrasonic line groove is provided at the position of the lower shell corresponding to the ultrasonic line; The upper cover and the lower shell are symmetrically provided with wire grooves on both sides, and the wire grooves include a first groove provided on the lower shell, and a second groove provided on the upper cover, the first groove intersects with the ultrasonic line groove so that the ultrasonic line groove is interrupted and a first connecting portion for butt connection is formed on both sides of the first groove, the first connecting portion is an arc-shaped concave transition, the second groove intersects with the ultrasonic line so that the ultrasonic line is interrupted and a second connecting portion for butt connection is formed on both sides of the second groove, the second connecting portion is an arc-shaped convex transition, and the second connecting portion corresponds to the first connecting portion; Wherein, the ultrasonic line extends to a side of the second connecting portion away from the second groove.
[0009] As a further solution of the present invention: 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; 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 connection portion and the corresponding first connection portion are butted against each other when the upper cover and the lower shell are closed.
[0010] As a further solution of the present invention: the ultrasonic line extends continuously along a side of the second connecting portion away from the second groove, and the ultrasonic line of the extended portion maintains the original cross-sectional shape and linear direction.
[0011] As a further solution of the present invention: the ultrasonic line is in the form of a continuous or discontinuous linear protrusion surrounding the connecting edge where the upper cover and the lower shell are in contact, and the ultrasonic line groove is a recessed structure that matches the shape of the ultrasonic line, and is distributed around the contact edge between 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.
[0012] As a further solution of the present invention: wires corresponding to the power supply components and used to achieve 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 sleeved on the outer periphery of the wires; When the upper cover and the lower shell are closed, the first groove and the second groove are buckled into each other to form a accommodating space for the wire groove, and the first connecting part and the second connecting part are docked and cooperated to jointly squeeze the wire with the sealing ring, causing the sealing ring to deform and fill the gap between the wire and the wire groove.
[0013] As a further solution of the present invention: the connecting edge where the lower shell and the upper cover are in contact is protruded outward to form an annular skirt portion, and a sealing groove is arranged at the skirt portion. The so-called sealing groove includes a first sealing groove and a second sealing groove arranged from the outside to the inside and at intervals, and the second sealing groove is the ultrasonic line groove.
[0014] As a further solution of the present invention: the connecting edges where the lower shell and the upper cover are in contact are respectively convex outwards to form a first annular skirt and a second annular skirt; A first limiting rib and a second limiting rib are convexly formed on the end surface of the first skirt, and the first limiting rib and the second rib are enclosed to form the ultrasonic line slot; A third limiting rib and a fourth limiting rib are convexly formed on the end surface of the second skirt, and a first sealing groove is formed between the third limiting rib and the fourth limiting rib; The first sealing groove is butt-jointed with the first limiting rib, and the ultrasonic line groove is butt-jointed with the fourth limiting rib, wherein the ultrasonic line is arranged on the fourth limiting rib.
[0015] As a further solution 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 portion; The ultrasonic line groove, the first blocking edge and the second blocking edge are provided with a first groove and a corresponding first connecting portion.
[0016] As a further solution of the present invention: the inner walls of the first groove and the second groove are respectively provided with a first limiting wall and a second limiting wall; When the upper cover and the lower shell are closed, the first limiting wall and the second limiting wall both squeeze the wire and butt against each other to form a limiting abutting structure acting on the sealing ring.
[0017] Compared with the prior art, the present invention has the following beneficial effects: 1) The tight and seamless connection of the shell achieved through ultrasonic welding completely eliminates the gaps caused by looseness and aging under the traditional connection method (screw fastening, snap connection), and cuts off the channels for moisture and dust to enter through such gaps. The waterproof system constructed by the wire trough uses 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 line and the ultrasonic wire trough", and "the sealing effect of ultrasonic welding" to overcome the stubborn problem of weak waterproofness of traditional straight-through wire troughs, and strengthens waterproofness from the key part of cable entry and exit, greatly reducing the risk of water short circuit and corrosion of power components. The waterproof capability has achieved a qualitative leap compared to conventional power adapters, which is enough to cope with complex and harsh usage scenarios such as outdoor rain erosion and water vapor in humid workshops; 2) The excellent waterproof performance and reliable shell structure complement each other. With its excellent waterproof performance, it reduces electrical failures caused by water, and relies on a stable structure to ensure stable power transmission. When outdoor portable 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 capabilities of operation under complex working conditions, and ensuring the smooth and efficient operation of the equipment system.
[0018] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.
[0020] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 It is a structural schematic diagram of the wire trough in the present invention; Figure 3 It is a structural schematic diagram of the upper cover in the present invention; Figure 4It is a structural schematic diagram of the lower shell in the present invention; Figure 5 It is a schematic diagram of the structure of the cooperation between the lower shell and the power supply assembly in the present invention; Figure 6 It is a schematic diagram of the cross-sectional structure of the present invention from one viewing angle; Figure 7 It is a schematic cross-sectional structure diagram of another viewing angle of the present invention.
[0021] The reference numerals and names in the figures are as follows: 1. Shell; 2. Power supply assembly; 3. Upper cover; 4. Lower shell; 5. Ultrasonic wire; 6. Ultrasonic wire slot; 7. Wire slot; 8. First groove; 9. Second groove; 10. First connecting part; 11. Second connecting part; 12. Wire; 13. Sealing ring; 14. Skirt; 15. First sealing groove; 16. First skirt; 17. Second skirt; 18. First limiting rib; 19. Second limiting rib; 20. Third limiting rib; 21. Fourth limiting rib; 22. First limiting wall; 23. Second limiting wall. DETAILED DESCRIPTION
[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0023] See also Figure 1-7 In an embodiment of the present invention, a waterproof power adapter includes a housing 1 and a power assembly 2, wherein the housing 1 includes an upper cover 3 and a lower housing 4, and the upper cover 3 and the lower housing 4 are adapted to be connected to form an internal cavity for accommodating the power assembly 2; The edge of the upper cover 3 is provided with an ultrasonic line 5, and the ultrasonic line 5 surrounds the connecting edge where the upper cover 3 contacts the lower shell 4, and the lower shell 4 is provided with an ultrasonic line groove 6 at a position corresponding to the ultrasonic line 5; The upper cover 3 and the lower shell 4 are symmetrically provided with wire grooves 7, and 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 portion 10 for butting is formed on both sides of the first groove 8, the first connecting portion 10 is an arc-shaped concave transition, the second groove 9 intersects with the ultrasonic line 5, so that the ultrasonic line 5 is interrupted and a second connecting portion 11 for butting is formed on both sides of the second groove 9, the second connecting portion 11 is an arc-shaped convex transition, and the second connecting portion 11 corresponds to the first connecting portion 10; The ultrasonic line 5 extends to a side of the second connecting portion 11 away from the second groove 9 .
[0024] In the technical solution of the present invention, 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, which is distributed around the edge, and its cross section presents a regular geometric shape (such as a triangle, a semicircle, and other common shapes), so as to ensure full and stable contact with the corresponding part of the lower shell 4, and the ultrasonic line groove 6 at the corresponding position of the lower shell 4, its concave shape is precisely matched with the convex shape of the ultrasonic line 5, and the depth is designed to be not less than the height of the ultrasonic line 5, so as to ensure that there is enough space to accommodate the ultrasonic line 5 and achieve full fusion in the subsequent ultrasonic welding process; When the ultrasonic welding process is performed, the equipment emits a specific frequency (usually in the range of 15kHz - 40kHz) and stable ultrasonic vibration, which causes the ultrasonic line 5 and the ultrasonic line groove 6 to rub quickly at the parts that are closely fitted. This high-frequency friction generates a large amount of heat, which is enough to make 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 properties) quickly heat up in the contact area to a molten state, and the plastic molecules in the molten state become active. The molecules at the ultrasonic line 5 and the ultrasonic line groove 6 diffuse, intertwine and entangle with each other. When the ultrasonic vibration stops and the temperature cools down, the two are firmly adhered to form a continuous and seamless sealed connection at the edge of the shell 1, effectively preventing foreign matter such as moisture and dust from the outside from invading the internal cavity from the splicing gap of the shell 1, and effectively ensuring the safe and clean working environment of the internal power supply component 2; In order to achieve the connection between the inside and outside of the cable and ensure waterproofing, the wire grooves 7 are symmetrically designed on both sides of the shell 1. The wire grooves 7 are composed of the first grooves 8 of the lower shell 4 and the second grooves 9 of the upper cover 3. The first grooves 8 are horizontally excavated in the lower shell 4 and intersect with the ultrasonic wire grooves 6 in the extension path. This intersection causes the ultrasonic wire grooves 6 to be interrupted here, and then the first connecting parts 10 with arc-shaped concave transitions are naturally formed on both sides of the interrupted area. On the one hand, this concave design conforms to the physical direction of the cable when it passes out and in, and reduces stress concentration; on the other hand, the concave shape is used, combined with the adhesion and sealing characteristics of the material itself, after the ultrasonic welding is completed, the water that may penetrate from the gap between the cable and the groove wall is formed to form an auxiliary interception and blocking effect, preventing the water from penetrating directly into the internal cavity; 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 interrupt and form a corresponding arc-shaped convex transition second connecting part 11. The convex curvature precisely fits the depression of the first connecting part 10, and the two form a mutually complementary fitting relationship. In addition, the ultrasonic line 5 is additionally extended to the side of the second connecting part 11 away from the second groove 9. When the upper and lower covers are tightly fitted by ultrasonic welding, this extension section 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 wire groove 7, with the help of the fitting and connecting effect of the second groove 9 of the upper cover 3 and the first groove 8 of the lower shell 4, the coordinated cooperation of the ultrasonic line 5 and the ultrasonic wire groove 6, and the comprehensive effect of ultrasonic welding sealing, the small gap between the cable and the wall of the wire groove 7 is effectively filled and closed, so that moisture cannot penetrate inward along the cable outer skin texture and the gap of the inner wall of the wire groove, thereby building a strong waterproof defense line; In summary, the shell 1 is tightly and seamlessly connected based on ultrasonic welding, which completely eliminates the gaps caused by looseness and aging under the traditional connection method (screw fastening, snap connection), and cuts off the channels for moisture and dust to invade through such gaps. The wire groove 7 relies on the "fitting connection effect of 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 line 5 and the ultrasonic wire groove 6", and "the sealing effect of ultrasonic welding". The constructed waterproof system overcomes the stubborn problem of weak waterproofness of traditional straight-through cable duct 7, strengthens waterproofness from the key position of cable entry and exit, greatly reduces the risk of short circuit and corrosion caused by water immersion of power supply component 2, and achieves a qualitative leap in waterproof capability compared with conventional power adapters, which is sufficient to cope with complex and harsh usage scenarios such as outdoor rain erosion and water vapor in humid workshops; the excellent waterproof performance and reliable shell 1 structure complement each other, and reduce electrical failure shutdowns caused by water by virtue of its excellent waterproof performance, and rely on a stable structure to ensure stable power transmission, so that when outdoor portable devices are subjected to harsh tests such as bumpy transportation and complex working conditions in industrial workshops, the power adapter always delivers stable power to the electronic equipment, effectively improving the reliability and long-term service capability of operation under complex working conditions, and ensuring the smooth and efficient operation of the equipment system.
[0025] In the 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; 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; The second connecting portion 11 and the corresponding first connecting portion 10 are butted against each other when the upper cover 3 and the lower shell 4 are closed.
[0026] The wire trough 7 is composed of the first groove 8 of the lower shell 4 and the second groove 9 of the upper cover 3 to ensure the connection between the inside and outside of the cable and waterproof. The two sides are symmetrically distributed to balance the force and regularize the wiring. The first groove 8 runs through the lower shell 4 horizontally and intersects with the ultrasonic wire trough 6. This intersection causes the ultrasonic wire trough 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 is consistent with the mechanical distribution of the cable, avoiding unilateral uneven force. At the same time, it cooperates with the existing waterproof partition characteristics of the ultrasonic wire trough 6, and uses the concave shape to intercept possible infiltration of water to prevent direct driving of the internal cavity. The second groove 9 of the upper cover 3 intersects with the ultrasonic line 5, so that the ultrasonic line 5 is interrupted to form two independent second connecting parts 11 symmetrical about the central axis of the second groove 9, and the convex shape thereof corresponds to the depression 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 docked and matched up and down, and the ultrasonic line 5 extends to the second connecting part 11 away from the second groove 9 to strengthen the seal; with the help of "the first groove 8 intersects with the ultrasonic line groove 6 and forms the symmetrical first connecting part 10", "the second groove 9 intersects with the ultrasonic line 5 and forms the symmetrical second connecting part 11", "the upper and lower connecting parts are closed and docked" and "the ultrasonic welding sealing effect", the gap between the cable and the groove wall is filled to lock the moisture penetration path.
[0027] In the embodiment of the present invention, the ultrasonic line 5 extends continuously along a side of the second connecting portion 11 away from the second groove 9 , and the ultrasonic line 5 of the extended portion maintains the original cross-sectional shape and linear direction.
[0028] Since the ultrasonic line 5 maintains its original cross-sectional shape and linear direction, during the ultrasonic welding process, the extended ultrasonic line 5 can be effectively ultrasonically welded to the first connecting portion 10 and its surrounding area. This design makes the connection between the first connecting portion 10 and the second connecting portion 11 no longer rely solely on simple mechanical fitting, but achieves material fusion through ultrasonic welding to form a tight sealing structure, thereby effectively preventing moisture from penetrating into the interior of the power adapter from this critical wire groove 7; wherein, the unique arc-shaped concave transition shape of the first connecting portion 10 takes into account the cooperation with the extended ultrasonic line 5, guides the contact through the concave, and achieves sealing by tight fit and ultrasonic energy to stimulate molecular fusion.
[0029] In the embodiment of the present invention, the ultrasonic line 5 is in the form of a continuous or discontinuous linear protrusion surrounding the connecting edge where the upper cover 3 and the lower shell 4 contact. The ultrasonic line groove 6 is a recessed structure that matches the shape of the ultrasonic line 5 , and is distributed around the contact edge between the lower shell 4 and the upper cover 3 , and the depth of the ultrasonic line groove 6 is not less than the height of the ultrasonic line 5 .
[0030] The shell 1 of the waterproof power adapter is composed of an upper cover 3 and a lower shell 4. The ultrasonic line 5 at the edge of the upper cover 3 is arranged in a continuous or discontinuous linear protrusion. This design is intended to accurately adapt to the ultrasonic line groove 6 corresponding to the edge of the lower shell 4; the ultrasonic line groove 6 is a recessed structure, which is also completely distributed along the contact edge of the lower shell 4 and the upper cover 3, and its depth is not less than the height of the ultrasonic line 5. This size matching ensures that when the two are closed for welding, the ultrasonic line 5 can be fully and tightly embedded in the ultrasonic line groove 6; during the ultrasonic welding operation, the ultrasonic equipment applies high-frequency mechanical vibration to make the ultrasonic line 5 fit tightly with the ultrasonic line groove 6. The molecules of the plastic material in the part move violently and rub against each other. Since the two fit closely, the energy can be efficiently transferred to the contact area, causing the plastic to soften, melt and fuse together, and finally forming a strong and seamless overall structure with the upper cover 3 and the lower shell 4 at the connection edge, building a solid barrier to resist the invasion of external moisture and impurities; in the part of the wire groove 7, although the ultrasonic line 5 is interrupted here to form a connecting part, relying on the surrounding welding foundation of the whole ultrasonic line 5 and the ultrasonic wire groove 6, with the special design of the connecting part and the coordinated welding, it is ensured that the wire groove 7 area is also integrated into the waterproof sealing system, which complements the overall waterproof design of the shell 1.
[0031] In the embodiment of the present invention, at the wire grooves 7 symmetrically arranged on both sides of the upper cover 3 and the lower shell 4, wires 12 corresponding to the power supply assembly 2 and used to achieve electrical connection are arranged through, and a sealing ring 13 is tightly sleeved on the outer periphery of the wire 12; When the upper cover 3 and the lower shell 4 are closed, the first groove 8 and the second groove 9 are correspondingly buckled up and down to form an accommodating space for the wire groove 7, and the first connecting part 10 and the second connecting part 11 are docked and matched to jointly squeeze the wire 12 with the sealing ring 13, causing the sealing ring 13 to deform and fill the gap between the wire 12 and the wire groove 7.
[0032] At the wire grooves 7 symmetrically arranged on both sides of the shell 1, there are wires 12 for electrically connecting the power supply assembly 2, and a sealing ring 13 is tightly sleeved on the outer periphery of the wire 12. When the upper cover 3 and the lower shell 4 are assembled, the first groove 8 of the lower shell 4 and the second groove 9 of the upper cover 3 are precisely matched up and down to enclose the wire groove 7 accommodating space, allowing the wire 12 to pass through in an orderly manner. At the same time, the second connecting portion 11 formed by the interruption of the ultrasonic line 5 is docked with the first connecting portion 10 formed by the interruption of the ultrasonic wire groove 6, and the wire 12 with the sealing ring 13 is squeezed from both sides. This extrusion causes the sealing ring 13 to deform, and according to the elastic properties of the material, the tiny gap between the wire 12 and the wall of the wire groove 7 due to manufacturing tolerances, irregularities in the surface of the wire 12 and other factors is filled. The ultrasonic welding seal cooperates with the sealing ring 13 at the wire groove 7 to lock the possible penetration path of moisture in multiple dimensions, and comprehensively ensure that the internal power supply assembly 2 is isolated from external water vapor.
[0033] In the embodiment of the present invention, the connecting edge where the lower shell 4 and the upper cover 3 are in contact is convexly formed to form an annular skirt portion 14, and a sealing groove is provided at the skirt portion 14, the so-called sealing groove includes a first sealing groove 15 and a second sealing groove which are arranged from the outside to the inside and are spaced apart, and the second sealing groove is the ultrasonic line groove 6; The connecting edges of the lower shell 4 and the upper cover 3 are respectively convex outwards to form a first annular skirt 16 and a second annular skirt 17; A first limiting rib 18 and a second limiting rib 19 are convexly formed on the end surface of the first skirt 16, and the first limiting rib 18 and the second rib are enclosed to form the ultrasonic line slot 6; A third limiting rib 20 and a fourth limiting rib 21 are convexly formed on the end surface of the second skirt 17, and the third limiting rib 20 and the fourth limiting rib 21 enclose a first sealing groove 15; The first sealing groove 15 is butt-jointed with the first limiting rib 18 , and the ultrasonic line groove 6 is butt-jointed with the fourth limiting rib 21 , wherein the ultrasonic line 5 is disposed on the fourth limiting rib 21 .
[0034] For the shell 1 of the waterproof power adapter, the connecting edge where the lower shell 4 and the upper cover 3 are in contact is protruded outward to form an annular skirt portion 14. The setting of the skirt portion 14 increases the structural level of the edge of the shell 1, which helps to strengthen the stability of the seal and connection. A sealing groove is set in the skirt portion 14, including a first sealing groove 15 and a second sealing groove spaced from the outside to the inside, and the second sealing groove is an ultrasonic line groove 6. The lower shell 4 and the upper cover 3 are respectively protruded outward with an annular first skirt 16 and a second skirt 17, which cooperate with each other when closed.
[0035] A first limiting rib 18 and a second limiting rib 19 are convexly provided on the end surface of the first skirt 16 of the lower shell 4, and the two are combined to form an ultrasonic line groove 6. Such a structure can accurately define the position and shape of the ultrasonic line groove 6, ensuring that it is accurately docked with the corresponding structure of the upper cover 3. Similarly, a third limiting rib 20 and a fourth limiting rib 21 are convexly provided on the end surface of the second skirt 17 of the upper cover 3, and the two are combined to form a first sealing groove 15. This first sealing groove 15 is docked with the first limiting rib 18 of the lower shell 4, so that when the upper and lower covers are closed, the sealing structure of the edges can be connected in an orderly manner; The ultrasonic line 5 is arranged on the fourth limiting rib 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). High-frequency vibration is applied by ultrasonic welding equipment. Under vibration, friction and appropriate pressure, the molecules of the plastic material at the contact part of the ultrasonic line 5 and the ultrasonic line groove 6 fuse with each other, thereby realizing the firm welding of the upper and lower covers at the connecting edges. At the same time, with the help of the cooperation of the first sealing groove 15 and the third limiting rib 20, as well as the overall structure of the skirt portion 14, multiple sealing defense lines are constructed at the edge of the shell 1 to prevent external moisture, dust, etc. from penetrating from the edge.
[0036] In the embodiment of the present invention, 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 portion 11; The ultrasonic line groove 6 , the first blocking edge and the second blocking edge are provided with a first groove 8 and a corresponding first connecting portion 10 .
[0037] In the sealing design of the edge of the housing 1, the area formed by the first sealing groove 15, the third limiting rib 20 and the fourth limiting rib 21 is provided with a second groove 9 and a corresponding second connecting portion 11, which means that the structural arrangement of the wire groove 7 is taken into consideration while constructing the sealing system. When the upper and lower covers are closed, the second groove 9 cooperates with the corresponding structure of the lower shell 4 (the first groove 8) to form a complete wire groove 7, and the second connecting portion 11 is connected to the first connecting portion 10 to seal and fix the wire 12 passing through. Similarly, the area formed by the ultrasonic wire groove 6, the first limiting rib 18 and the second limiting rib 19 is provided with a first groove 8 and a corresponding first connecting portion 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 groove 7. The cooperation of the first groove 8 and the second groove 9, and the docking of the first connecting portion 10 and the second connecting portion 11, on the basis of realizing the smooth passage of the wire 12 through the wire groove 7, through the blocking of each limiting rib and the sealing effect of the sealing groove, it is difficult for moisture to enter the interior from the periphery of the wire groove 7.
[0038] In the embodiment of the present invention, the inner walls of the first groove 8 and the second groove 9 are respectively provided with a first limiting wall 22 and a second limiting wall 23 protruding therefrom; When the upper cover 3 and the lower shell 4 are closed, the first limiting wall 22 and the second limiting wall 23 both press the wire 12 and butt against each other to form a limiting abutting structure acting on the sealing ring 13 .
[0039] In the design of the wire groove 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, which are provided to accurately position and squeeze the wire 12 passing through the wire groove 7; 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 effect can not only fix the position of the wire 12 to prevent it from shaking or shifting in the wire groove 7, but also squeeze the sealing ring 13 sleeved on the outer periphery of the wire 12 to cause the sealing ring 13 to deform. At the same time, the first limiting wall 22 and the second limiting wall 23 are butted against each other to form a complete limiting abutment structure acting on the sealing ring 13. This limiting abutment structure can effectively limit the position of the sealing ring 13, ensuring that after the sealing ring 13 is squeezed, its deformation direction and degree can better fill the gap between the wire 12 and the wire groove 7, thereby achieving a good sealing effect.
[0040] like Figure 2 As shown, the wire groove 7 is generally concentrated in the lower shell 4 (the first connecting portion 10 is extended along the lower end of the upper cover 3, and the second groove 9 is formed between the two first connecting portions 10); the concentration of the wire groove 7 in the lower shell 4 is helpful to build a more concentrated waterproof defense line, because the waterproof focus can be placed on the cooperation between the lower shell 4 and the upper cover 3 in the wire groove 7 area. For example, the first connecting portion 10 is formed by intersecting with the ultrasonic wire groove 6 at the first groove 8, and then combined with the second connecting portion 11 corresponding to the second groove 9 of the upper cover 3, and the limiting wall arranged on the inner wall of the groove squeezes the sealing ring 13, so that the waterproof measures are more focused, which can effectively prevent moisture from penetrating from the key position where the cable enters and exits, and avoid the possibility of leakage due to the dispersion of the wire groove 7. The weak link of waterproofing is eliminated, thereby improving the waterproofing performance of the entire power adapter; furthermore, the design of the wire groove 7 concentrated on the lower shell 4 makes the structure more compact and regular. During the assembly process, the first groove 8 and other structures of the lower shell 4 can 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 wire groove 7 area is tighter and orderly, and the synergy of each part is better exerted. 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 of the cable, so that when the entire power adapter is subjected to external force (such as plugging and unplugging, vibration, etc.), the structure in the wire groove 7 area is less likely to be deformed or damaged, which helps to maintain the overall stability of the power adapter.
[0041] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered exemplary and non-restrictive in all respects, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention.
Claims
1. A waterproof power adapter, characterized in that: The invention comprises a housing and a power supply assembly, wherein the housing comprises an upper cover and a lower shell, and the upper cover and the lower shell are adapted to be connected to form an internal cavity for accommodating the power supply assembly; An ultrasonic line is provided at the edge of the upper cover, the ultrasonic line surrounds the connecting edge where the upper cover contacts the lower shell, and an ultrasonic line groove is provided at the position of the lower shell corresponding to the ultrasonic line; The upper cover and the lower shell are symmetrically provided with wire grooves on both sides, and the wire grooves include a first groove provided on the lower shell, and a second groove provided on the upper cover, the first groove intersects with the ultrasonic line groove so that the ultrasonic line groove is interrupted and a first connecting portion for butt connection is formed on both sides of the first groove, the first connecting portion is an arc-shaped concave transition, the second groove intersects with the ultrasonic line so that the ultrasonic line is interrupted and a second connecting portion for butt connection is formed on both sides of the second groove, the second connecting portion is an arc-shaped convex transition, and the second connecting portion corresponds to the first connecting portion; Wherein, the ultrasonic line extends to a side of the second connecting portion 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 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; 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 connection portion and the corresponding first connection portion are butted against each other when the upper cover and the lower shell are closed.
3. A waterproof power adapter according to claim 1, characterized in that: The ultrasonic line extends continuously along a side of the second connecting portion away from the second groove, and the ultrasonic line of the extended portion maintains the original cross-sectional shape and linear direction.
4. The waterproof power adapter according to claim 1, characterized in that: The ultrasonic line is surrounded by the connecting edge where the upper cover and the lower shell contact in the form of a continuous or discontinuous linear protrusion. The ultrasonic line groove is a recessed structure that matches the shape of the ultrasonic line, and is distributed around the contact edge between 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. The waterproof power adapter according to claim 1, characterized in that: Wires corresponding to the power supply components and used to achieve 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 sleeved on the outer periphery of the wires; When the upper cover and the lower shell are closed, the first groove and the second groove are buckled into each other to form a accommodating space for the wire groove, and the first connecting part and the second connecting part are docked and cooperated to jointly squeeze the wire with the sealing ring, causing the sealing ring to deform and fill the gap between the wire and the wire groove.
6. The waterproof power adapter according to claim 1, characterized in that: The connecting edge where the lower shell and the upper cover are in contact is protruded outward to form an annular skirt portion, and a sealing groove is arranged at the skirt portion. The so-called sealing groove includes a first sealing groove and a second sealing groove arranged from the outside to the inside and spaced apart, and the second sealing groove is the ultrasonic line groove.
7. A waterproof power adapter according to claim 6, characterized in that: The connecting edges where the lower shell and the upper cover are in contact are respectively protruded outward to form a first annular skirt and a second annular skirt; A first limiting rib and a second limiting rib are convexly formed on the end surface of the first skirt, and the first limiting rib and the second rib are enclosed to form the ultrasonic line slot; A third limiting rib and a fourth limiting rib are convexly formed on the end surface of the second skirt, and a first sealing groove is formed between the third limiting rib and the fourth limiting rib; The first sealing groove is butt-jointed with the first limiting rib, and the ultrasonic line groove is butt-jointed with the fourth limiting rib, wherein the ultrasonic line is arranged on the fourth limiting rib.
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 provided with a second groove and a corresponding second connecting portion; The ultrasonic line groove, the first blocking edge and the second blocking edge are provided with a first groove and a corresponding first connecting portion.
9. The 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 first limiting wall and a second limiting wall protruding therefrom; When the upper cover and the lower shell are closed, the first limiting wall and the second limiting wall both squeeze the wire and butt against each other to form a limiting abutting structure acting on the sealing ring.