A power adapter with high waterproof performance

Abstract

This utility model discloses a power adapter with high waterproof performance, relating to the field of power adapter technology. It includes a power adapter body with a potting structure on its top side. The potting structure includes a boss protruding from the top side of the power adapter body, with a potting port connected to the inner cavity of the power adapter body. A side cover is fitted at the potting port, and the side cover engages with the boss in a snap-fit ​​manner to seal the potting port. This gives the power adapter excellent waterproof performance, meeting the needs of harsh environments such as dampness and outdoor conditions. Furthermore, its convenient assembly structure improves its production applicability, balancing performance reliability and practicality.

Description

Technical Field

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

[0002] Power adapters are often used in complex environments such as dampness and water immersion, which places high demands on their waterproof performance. Traditional power adapters often use simple sealing rings or basic sealing at the shell joints for waterproofing. However, this approach has significant drawbacks. On the one hand, sealing rings are prone to aging and deformation under long-term use or exposure to external forces and temperature changes, leading to waterproofing failure. On the other hand, the sealing structure at the shell joints, due to manufacturing precision issues, cannot achieve a continuous and reliable seal. External water or moisture can easily penetrate the adapter's interior through these gaps, damaging internal electronic components, affecting the normal operation of the power adapter, or even rendering it unusable. This fails to meet the needs of scenarios with high waterproofing requirements, such as outdoor operations and powering equipment in humid environments.

[0003] Furthermore, while existing potting solutions can improve waterproofing to some extent, they still have significant limitations: traditional potting structures typically involve directly creating a potting hole in the adapter shell, followed by sealing with a simple plug (such as a silicone plug). This design results in low precision in the fit between the potting hole and the plug, making it prone to gaps due to assembly errors or adhesive shrinkage during curing, leading to waterproofing failure. Simultaneously, the adhesive is difficult to evenly fill the corners and edges of the adapter's internal cavity during potting, easily forming air bubbles or voids, affecting the integrity of the waterproofing.

[0004] Therefore, it is necessary to propose a new technical solution to address the above problems. Utility Model Content

[0005] To overcome the shortcomings mentioned above, this utility model aims to provide a technical solution that can solve the above problems.

[0006] A power adapter with high waterproof performance includes a power adapter body, wherein the top side of the power adapter body is provided with a potting structure; The potting structure includes a boss protruding from the top side of the power adapter body. The boss has a potting port that is connected to the inner cavity of the power adapter body. A side cover is provided at the potting port. The side cover and the boss are engaged in a snap-fit ​​manner to seal the potting port.

[0007] As a further embodiment of this utility model: the interior of the boss is formed with a capacity-enhancing cavity, one end of which is connected to the glue-filling port and the other end is connected to the inner cavity of the power adapter body.

[0008] As a further embodiment of this utility model: the side cover includes a cover body and a plurality of snap-fit ​​blocks extending from the cover body toward the glue-filling port. The inner wall of the boss is provided with a snap-fit ​​groove that corresponds to and is adapted to the snap-fit ​​blocks. The snap-fit ​​blocks are snapped into the snap-fit ​​grooves to realize the snap-fit ​​engagement between the side cover and the boss.

[0009] As a further embodiment of this utility model: the snap-fit ​​blocks are evenly spaced along the circumference of the cover; The slots are evenly spaced along the circumference of the boss.

[0010] As a further embodiment of this utility model: a first gap is formed between the edge of the cover and the snap-fit ​​block, and the first gap causes the cover to form an annular abutment portion on the side facing the protrusion; A second gap is formed between the inner side of the boss and the edge of the slot, and the second gap causes the side of the boss facing the cover to form an annular step. When the snap-fit ​​block is snapped into the slot, the annular abutment portion and the annular stepped portion fit tightly together circumferentially.

[0011] As a further embodiment of this utility model: an adhesive layer is provided between the mating surfaces of the annular abutment portion and the annular step portion; The adhesive layer is formed by the adhesive injected from the glue inlet and overflowing onto the bonding surface and then curing, and is used to achieve the bonding and sealing of the annular abutment part and the annular step part.

[0012] As a further embodiment of this utility model: the outer peripheral wall of the boss is provided with an annular reinforcing rib, the annular reinforcing rib extends along the circumference of the boss and is connected to the outer wall of the power adapter body.

[0013] As a further embodiment of this utility model: the power adapter body includes an upper cover and a lower shell connected by ultrasonic waves, and the boss is formed on one side of the top of the lower shell.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: 1) The expansion cavity of the boss in the potting structure ensures that the glue fills the inner cavity evenly and avoids voids; the multiple sets of snap-fit ​​blocks and slots of the side cover and the boss cooperate to achieve precise positioning and fixation. Simply align the snap-fit ​​block with the slot and push it in to complete the fixation of the side cover and the boss, which greatly simplifies the assembly steps, reduces the difficulty of operation, ensures assembly accuracy, significantly improves production efficiency, and adapts to the needs of mass production. 2) The annular abutment part and the annular step part fit tightly together to form a basic seal. The adhesive layer formed by the curing of the adhesive between the mating surfaces is superimposed to construct a waterproof structure of "mechanical snap-fit ​​+ double seal". This effectively blocks the intrusion path of water or moisture, so that this power adapter has excellent waterproof performance and can meet the use requirements of harsh scenarios such as humidity and outdoor. The convenient assembly structure also improves the applicability of production, taking into account both performance reliability and production practicality.

[0015] 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

[0016] 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.

[0017] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is an exploded structural diagram of the present invention; Figure 3 This is a schematic diagram of the boss structure in this utility model; Figure 4 This is a schematic diagram of the side cover structure in this utility model; Figure 5 This is a cross-sectional structural diagram of the present invention.

[0018] The reference numerals and names in the figure are as follows: 1. Power adapter body; 2. Boss; 3. Glue inlet; 4. Inner cavity; 5. Side cover; 6. Capacity expansion cavity; 7. Cover; 8. Snap-fit ​​block; 9. Snap-fit ​​groove; 10. Annular abutment part; 11. Annular step part; 12. Annular reinforcing rib; 13. Top cover; 14. Bottom shell; 15. Glue filling structure. Detailed Implementation

[0019] 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.

[0020] Please see Figure 1-5In this embodiment of the utility model, a power adapter with high waterproof performance is provided, which includes a power adapter body 1 and a potting structure 15 disposed on the power adapter body 1. The high waterproof effect is achieved through structural design and assembly.

[0021] Specifically, the power adapter body 1 consists of an upper cover 13 and a lower shell 14, which are fixed together by ultrasonic connection. Ultrasonic connection ensures a tight fit between the upper cover 13 and the lower shell 14, minimizing gaps and improving overall waterproofing from the basic structure of the power adapter body 1. The aforementioned potting structure 15 is formed on one side of the top of the lower shell 14 and is an integral part of it. This integrated design ensures the stability of the connection between the potting structure 15 and the power adapter body 1, preventing new gaps from forming due to loosening.

[0022] The potting structure 15 includes a boss 2 protruding from the top side of the power adapter body 1 (i.e., the lower shell 14), extending outward along the side of the power adapter body 1. A potting port 3 is formed inside the boss 2, penetrating the boss 2. One end of the potting port 3 faces the outside of the power adapter body 1, and the other end communicates with the inner cavity 4 of the power adapter body 1. This potting port 3 is used to inject adhesive into the inner cavity 4 of the power adapter body 1. Simultaneously, a capacity-enhancing cavity 6 is also formed inside the boss 2. The capacity-enhancing cavity 6 is located between the potting port 3 and the inner cavity 4 of the power adapter body 1, with one end of the capacity-enhancing cavity 6 communicating with the potting port 3 and the other end communicating with the inner cavity 4 of the power adapter body 1.

[0023] To seal the glue inlet 3, a side cover 5 is provided at the glue inlet 3. The side cover 5 and the boss 2 are engaged by a snap-fit ​​mechanism. The side cover 5 specifically includes a cover body 7 and snap-fit ​​blocks 8. The cover body 7 is a plate-shaped structure adapted to the diameter of the glue inlet 3 and is used to cover the external opening of the glue inlet 3. The snap-fit ​​blocks 8 are block-shaped structures extending from the cover body 7 toward the glue inlet 3. Multiple snap-fit ​​blocks 8 are provided, and the multiple snap-fit ​​blocks 8 are evenly spaced along the circumference of the cover body 7. Correspondingly, the inner wall of the boss 2 has a slot 9 that corresponds one-to-one with the snap-fit ​​blocks 8. The slots 9 are evenly spaced along the circumference of the boss 2, and the groove shape and size of the slots 9 are adapted to the shape and size of the snap-fit ​​blocks 8. When the side cover 5 is installed on the boss 2, align each snap-fit ​​block 8 with the corresponding slot 9 and push it in so that the snap-fit ​​block 8 can be fully snapped into the slot 9, thereby achieving the snap-fit ​​fixation between the side cover 5 and the boss 2, and then sealing the glue-filling port 3 through the cover body 7.

[0024] Based on the snap-fit ​​engagement between the side cover 5 and the boss 2, a fitting structure is also formed to enhance the sealing effect. A first gap is left between the edge of the cover 7 and each snap-fit ​​block 8. This first gap is distributed circumferentially around the cover 7, forming a continuous annular abutment portion 10 on the side of the cover 7 facing the boss 2. The end face of the annular abutment portion 10 is a flat fitting surface. A second gap is left between the inner side of the boss 2 (the inner wall surface near the glue inlet 3) and the edge of each slot 9. This second gap is distributed circumferentially around the boss 2, forming a continuous annular stepped portion 11 on the side of the boss 2 facing the cover 7. The end face of the annular stepped portion 11 is also a flat fitting surface. When the snap-fit ​​block 8 is fully engaged in the slot 9, the end face of the annular abutment portion 10 and the end face of the annular stepped portion 11 are tightly fitted circumferentially, forming a circumferential sealing surface that can block the path of water or moisture intrusion from the fit gap between the side cover 5 and the boss 2.

[0025] Furthermore, an adhesive layer (not shown) is provided between the mating surfaces of the annular abutment portion 10 and the annular stepped portion 11. The adhesive layer is formed as follows: when adhesive (such as AB glue) is injected into the dispensing port 3, some of the adhesive, after filling the inner cavity 4 and the capacity-enhancing cavity 6 of the power adapter body 1, overflows along the inner wall of the dispensing port 3 to the mating surfaces of the annular abutment portion 10 and the annular stepped portion 11. After the adhesive cures, an adhesive layer is formed between the mating surfaces. This adhesive layer serves two purposes: firstly, it bonds and fixes the annular abutment portion 10 and the annular stepped portion 11, enhancing the connection stability between the side cover 5 and the boss 2; secondly, it fills any tiny gaps that may exist between the mating surfaces, forming a dual-sealing structure of "mechanical bonding + adhesive sealing," further improving the waterproof performance of the power adapter.

[0026] In addition, an annular reinforcing rib 12 is provided on the outer peripheral wall of the boss 2. The annular reinforcing rib 12 extends in a ring along the circumference of the boss 2, and one side of the annular reinforcing rib 12 is fixedly connected to the outer peripheral wall of the boss 2, while the other side is fixedly connected to the outer wall of the power adapter body 1 (lower shell 14). The annular reinforcing rib 12 can enhance the structural strength of the connection between the boss 2 and the power adapter body 1, prevent the boss 2 from deforming or breaking when the side cover 5 is installed or when it is subjected to external impact, ensure the stability of the potting structure 15 for long-term use, and indirectly ensure the durability of the waterproof performance of the power adapter.

[0027] In summary, the expansion cavity 6 of the boss 2 in the potting structure 15 ensures that the glue evenly fills the inner cavity 4, avoiding voids; the side cover 5 and the multiple sets of snap-fit ​​blocks 8 and slots 9 of the boss 2 cooperate to achieve precise positioning and fixation. Simply align the snap-fit ​​block 8 with the slot 9 and push it in to complete the fixation of the side cover 5 and the boss 2, which greatly simplifies the assembly steps, reduces the operation difficulty, and ensures assembly accuracy, significantly improving production efficiency and adapting to the needs of mass production; the annular abutment part 10 and the annular step part 11 fit tightly to form a basic seal, and the glue layer formed by the curing of the glue between the mating surfaces is superimposed to construct a waterproof structure of "mechanical snap-fit ​​+ double sealing", which effectively blocks the intrusion path of water or water vapor, so that this power adapter has excellent waterproof performance and can meet the use requirements of harsh scenarios such as humidity and outdoor. The convenient assembly structure also improves the applicability of production, taking into account both performance reliability and production practicality.

[0028] 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 power adapter with high waterproof performance, characterized in that, Includes a power adapter body, wherein the top side of the power adapter body is provided with a potting structure; The potting structure includes a boss protruding from the top side of the power adapter body. The boss has a potting port that is connected to the inner cavity of the power adapter body. A side cover is provided at the potting port. The side cover and the boss are engaged in a snap-fit ​​manner to seal the potting port.

2. The power adapter of claim 1, wherein, The boss has a capacity-enhancing cavity inside, one end of which is connected to the glue-filling port, and the other end is connected to the inner cavity of the power adapter body.

3. The power adapter of claim 1, wherein, The side cover includes a cover body and a plurality of snap-fit ​​blocks extending from the cover body toward the glue inlet. The inner wall of the boss is provided with a snap-fit ​​groove that corresponds to and fits the snap-fit ​​blocks one by one. The snap-fit ​​blocks are snapped into the snap-fit ​​grooves to achieve snap-fit ​​engagement between the side cover and the boss.

4. A power adapter with high waterproof performance according to claim 3, characterized in that, The snap-fit ​​blocks are evenly spaced along the circumference of the cover. The slots are evenly spaced along the circumference of the boss.

5. A power adapter with high waterproof performance according to claim 3, characterized in that, A first gap is formed between the edge of the cover and the snap-fit ​​block, and the first gap causes the cover to form an annular abutment part on the side facing the boss. A second gap is formed between the inner side of the boss and the edge of the slot, and the second gap causes the side of the boss facing the cover to form an annular step. When the snap-fit ​​block is snapped into the slot, the annular abutment portion and the annular stepped portion fit tightly together circumferentially.

6. A power adapter with high waterproof performance according to claim 5, characterized in that, An adhesive layer is provided between the mating surfaces of the annular abutment portion and the annular step portion; The adhesive layer is formed by the adhesive injected from the glue inlet and overflowing onto the bonding surface and then curing, and is used to achieve the bonding and sealing of the annular abutment part and the annular step part.

7. A power adapter with high waterproof performance according to claim 1, characterized in that, The outer peripheral wall of the boss is provided with an annular reinforcing rib, which extends circumferentially along the boss and is connected to the outer wall of the power adapter body.

8. A power adapter with high waterproof performance according to any one of claims 1-7, characterized in that, The power adapter body includes an upper cover and a lower shell connected by ultrasonic waves, and the boss is formed on one side of the top of the lower shell.

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