A waterproof assembly structure of a power adapter

Abstract

The present application provides a waterproof assembly structure for a power adapter, which relates to the technical field of power adapter waterproofing. It includes a power adapter main body, an assembly component, a waterproof seal B, and a waterproof seal A. The waterproof seal B includes a U-shaped strip, a tapered sleeve, and a seal notch. An adapter connection wire is assembled inside one end of the power adapter main body, and an adapter plug wire is inserted into the inside of the other end of the power adapter main body. The technical key points are as follows: By connecting with the angle seat A and the angle seat B through fastening bolts, the waterproof seal A is fixed between the two angle seats B. The tapered sleeve can be sleeved outside the adapter connection wire, and the stretched U-shaped strip is located at the gap of the power adapter main body. One end of the adapter plug wire passes through the inside of the seal notch, pressing the waterproof seal A on the surface of the power adapter main body to seal the connection point between the adapter plug wire and the power adapter main body, which is convenient for ensuring the sealing effect at the gap of the power adapter main body shell.

Description

Technical Field

[0001] The present invention relates to the technical field of waterproofing for power adapters, and specifically to a waterproof assembly structure for a power adapter. Background Art

[0002] A power adapter is a power supply conversion device for small portable electronic devices and electrical appliances. Generally, it consists of components such as a housing, a transformer, an inductor, a capacitor, a control IC, and a PCB board. Its working principle is to convert AC input into DC output; it can be divided into wall-mounted and desktop types according to the connection method.

[0003] A power adapter, also known as an external power supply, is a power supply voltage conversion device for small portable electronic devices and electrical appliances. It is commonly found in small electronic products such as mobile phones, liquid crystal displays, and laptop computers. It is also widely used in fields such as industrial automation control, military equipment, scientific research equipment, LED lighting, industrial control equipment, communication equipment, power equipment, instrumentation, medical equipment, semiconductor refrigeration and heating, air purifiers, electronic refrigerators, liquid crystal displays, LED lamps, audio-visual products, security, computer chassis, digital products, and instruments.

[0004] A patent document with the publication number CN212367113U, a waterproof assembly structure for a power adapter, uses an annular inclined pin to extrude a seal in a U-shaped ring groove. After extrusion, the seal deforms, and can tightly seal the gaps formed between the upper shell and the lower shell, as well as the gaps formed between the U-shaped ring groove and the annular inclined pin, thereby effectively blocking all the gaps formed during the assembly of the upper shell and the lower shell, completely preventing water vapor or moisture from entering the interior of the upper shell and the lower shell, greatly improving the waterproof performance of the product, and correspondingly improving the use safety and service life of the product, thus effectively solving the technical problem of difficult waterproofing for power adapters in the prior art.

[0005] Due to the inclined insertion action of the annular inclined pin, it can drive the seal to move to a certain extent in the U-shaped ring groove, causing the seal to generate a rebound sealing force to one side, thereby partially dispersing the rebound stress generated during the extrusion deformation of the seal, effectively solving the technical problems in the prior art where only a planar action is used on the seal, resulting in the seal being unable to move and generating a large rebound stress, leading to easy separation or cracking during the assembly of the upper shell and the lower shell, loose assembly, and low production efficiency, so as to improve the assembly stability between the upper shell and the lower shell and extend the service life of the power adapter.

[0006] However, during the implementation of the above technical solution, the following technical problems were found in the above technical solution:

[0007] The waterproof assembly structure of the power adapter squeezes the seal in the U-shaped ring groove through the annular inclined pin, so that the seal seals and fits the gap formed between the upper shell and the lower shell, and the gap formed between the U-shaped ring groove and the annular inclined pin, so as to achieve a waterproof function. However, in actual application, because the seal in the U-shaped ring groove is encapsulated into the interior of the power adapter, it is not conducive to being applied to the outside of different power adapters, and it is difficult for the seal in the U-shaped ring groove to complete the sealing work at the adapter connector plug interface, there is still the problem of water seeping into the interface. Summary of the invention

[0008] In order to overcome the problem that the waterproof assembly structure of the existing power adapter is not suitable for being applied to the outside of different power adapters during actual application, because the seal in the U-shaped ring groove is encapsulated into the interior of the power adapter, and it is not conducive to being applied to the outside of different power adapters, and it is difficult for the seal in the U-shaped ring groove to complete the sealing work at the adapter connector plug interface, and there is still the defect that water seeps into the interface, the embodiment of the present application provides a waterproof assembly structure of a power adapter, which is connected to the corner seat A and the corner seat B by fastening bolts, so that the waterproof seal A is fixed between the two corner seats B through two limit members and two bending plates, and can be sleeved on the outside of the adapter connecting line in a conical sleeve, and the stretched U-shaped strip is located at the gap of the power adapter body, and one end of the adapter plug line passes through the inside of the seal groove. When the waterproof seal A is pressed against the surface of the power adapter body, the connection point between the adapter plug line and the power adapter body is sealed, so as to ensure the sealing effect at the gap of the power adapter body shell.

[0009] The technical solution adopted by the embodiment of the present application to solve the technical problem is:

[0010] A waterproof assembly structure of a power adapter, comprising a power adapter body, an assembly component, a waterproof seal B and a waterproof seal A;

[0011] The assembly component is assembled at the bottom of the power adapter body;

[0012] The waterproof seal A cooperates with the waterproof seal B to seal the periphery of the power adapter body under the support of the assembly component;

[0013] The waterproof seal B comprises a U-shaped strip, a conical sleeve is integrally formed in the middle of the U-shaped strip, a seal notch is processed inside the waterproof seal A, an adapter connection line is assembled inside one end of the power adapter body, and an adapter plug line is plugged inside the other end of the power adapter body;

[0014] The conical sleeve is sleeved on the outside of the adapter cable and clamped to the outside of the adapter cable by its narrow end. One end of the adapter plug wire passes through the inside of the seal slot to press the waterproof seal A onto the surface of the power adapter body.

[0015] In a possible implementation, the assembly component includes two corner seats A and two connecting bars A, and prism grooves are machined on the inner sides of the two corner seats A and the two connecting bars A; the middle part of the U-shaped bar is pasted on the inner wall of the top of the prism grooves on the two corner seats A, and the two ends of the U-shaped bar are respectively pasted on the inner wall of the top of the prism grooves on the two corner seats B.

[0016] In a possible implementation, bent plates are machined at both ends of the waterproof seal A, and the two bent plates are respectively connected to the two corner seats B, pressing the waterproof seal A against the surface of the power adapter body and completely covering the interface at one end of the adapter plug wire, so that the interface is exposed from the seal slot opening.

[0017] In a possible implementation, mounting notch A and mounting notch B are machined on one side of the tops of the two corner seats B, a limiting member is connected in a plug-in manner inside the mounting notch A, positioning posts are integrally formed on the surfaces of the tops and bottoms of the two bent plates, and positioning grooves are opened at the tops and bottoms on one side of the limiting member; the inside of the mounting notch A and the mounting notch B are connected in communication, one side of the bent plate is inserted into the inside of the mounting notch B, and the two positioning posts on the bent plate are respectively inserted into the two positioning grooves on the limiting member.

[0018] In a possible implementation, the two limiting members are both composed of a round rod on one side and a vertical plate integrally formed on its surface, the two positioning grooves are located at its vertical plate, and the round rod and the vertical plate on the limiting member are adaptively connected to the inside of the mounting notch A.

[0019] In a possible implementation, receiving notch openings are machined inside the two feet at the bottoms of the corner seat A and the corner seat B, a connecting bar B is arranged between the two corner seats A and the two corner seats B, a connecting bar A is arranged between adjacent corner seats A and corner seats B, crimping blocks are integrally formed at the bottoms of both ends of the connecting bar A and the connecting bar B, and fastening bolts are arranged inside both ends of the connecting bar A and the connecting bar B; one end of the fastening bolt is threadedly connected to the inside of the corner seat A or the corner seat B, so that the crimping block is located inside the receiving notch opening.

[0020] In a possible implementation, the cross sections of the receiving notch opening and the crimping block are both right-angled trapezoids, strip-shaped grooves are opened inside both ends of the connecting bar A and the connecting bar B; the crimping blocks are symmetrically arranged at both ends of the connecting bar A or both ends of the connecting bar B, and the inclined surfaces at the bottoms of the two crimping blocks face each other.

[0021] In a possible implementation, when the fastening bolts at both ends of the connecting bar A are respectively connected to the corner seat A and the corner seat B, by means of the cooperation between the inclined surface at the bottom of the crimping block and the inclined inner wall of the inner wall of the receiving groove opening, the corner seat A and the corner seat B are pulled closer to each other, and the connecting bar A is slidably connected to the outside of the fastening bolt through the strip-shaped groove.

[0022] In a possible implementation, when the fastening bolts at both ends of the connecting bar B are connected between two corner seat As or two corner seat Bs, by means of the cooperation between the inclined surface at the bottom of the crimping block and the inclined inner wall of the inner wall of the receiving groove opening, the two corner seat As or the two corner seat Bs are pulled closer to each other, and the connecting bar B is slidably connected to the outside of the fastening bolt through the strip-shaped groove.

[0023] In a possible implementation, when the two corner seat As and the two corner seat Bs contract towards the center, by means of the prism groove on the inner side, the U-shaped strip is pressed at the corner of the power adapter body, and the inner corner of the bending plate drives the end of the U-shaped strip to be pressed on the surface of the power adapter body.

[0024] The beneficial effects of this application are as follows:

[0025] First, in this solution, by connecting the fastening bolts to the corner seat A and the corner seat B, the waterproof seal A is fixed between the two corner seat Bs through two limit members and two bending plates. When the conical sleeve is sleeved on the outside of the adapter connecting wire, the stretched U-shaped strip is located at the gap of the power adapter body, and one end of the adapter plug wire passes through the inside of the seal groove opening, and when the waterproof seal A is pressed on the surface of the power adapter body, the connection point between the adapter plug wire and the power adapter body is sealed, which is convenient for ensuring the sealing effect at the gap of the power adapter body shell.

[0026] Second, in this solution, by making the crimping blocks processed at both ends of the connecting bar A and both ends of the connecting bar B located inside the corresponding receiving groove openings, and by means of the cooperation between the inclined surface at the bottom of the crimping block and the inclined inner wall at the bottom of the receiving groove opening, when the connecting bar A or the connecting bar B approaches the bottom of the corner seat A or the corner seat B, the corner seat A can be pulled closer to the corner seat B, the two corner seat As can be pulled closer to each other, and the two corner seat Bs can be pulled closer to each other, which is convenient for the two corner seat As and the two corner seat Bs to scale within a certain range and be fixed on the outside of power adapter bodies of different sizes. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic structural diagram of the installation position of a waterproof assembly structure of a power adapter according to the present invention;

[0028] Figure 2 It is a schematic overall structural diagram of a waterproof assembly structure of a power adapter according to the present invention;

[0029] Figure 3Schematic diagram of the overall structure of the assembly component of the waterproof assembly structure of a power adapter according to the present invention;

[0030] Figure 4 For the waterproof assembly structure of a power adapter according to the present invention Figure 3 Enlarged schematic diagram of part A in;

[0031] Figure 5 Schematic diagram of the connection structure between two corner seats B of the waterproof assembly structure of a power adapter according to the present invention;

[0032] Figure 6 For the waterproof assembly structure of a power adapter according to the present invention Figure 5 Enlarged schematic diagram of part B in;

[0033] Figure 7 Schematic diagram of the structure of the waterproof assembly structure of a power adapter according to the present invention in a state where the bending plate and the corner seat B are disconnected;

[0034] Figure 8 For the waterproof assembly structure of a power adapter according to the present invention Figure 7 Enlarged schematic diagram of part C in.

[0035] Reference signs:

[0036] 1. Adapter connection line; 2. Power adapter main body; 3. Waterproof seal A;

[0037] 4. Waterproof seal B; 401. Conical sleeve; 402. U-shaped strip;

[0038] 5. Assembly component; 501. Corner seat A; 502. Connection strip A; 503. Corner seat B; 504. Connection strip B; 505. Crimping block;

[0039] 6. Adapter plug line; 7. Seal slot; 8. Limiting member; 9. Bending plate; 10. Prism groove; 11. Mounting slot A; 12. Mounting slot B; 13. Strip-shaped groove; 14. Tightening bolt; 15. Storage slot; 16. Positioning post; 17. Positioning groove. Detailed implementation manners

[0040] The technical solutions in the embodiments of the present application are to solve the problems in the above background technology, and the general idea is as follows:

[0041] Embodiment 1. This embodiment introduces the specific structure of a waterproof assembly structure of a power adapter. Specifically, refer to Figure 1 、 Figure 2 And Figure 5As shown, it includes a power adapter body 2, an assembly component 5 assembled at the bottom of the power adapter body 2, a waterproof seal B4 and a waterproof seal A3, the assembly component 5 includes two corner seats A501 and two connecting strips A502, and the inner sides of the two corner seats A501 and the two connecting strips A502 are processed with prismatic grooves 10;

[0042] Among them, by locating the corner seat A501 and the corner seat B503 at the corner of the power adapter body 2, the corner seat A501 and the corner seat B503 can be adapted and connected to the outside of the power adapter body 2 by means of the prism grooves 10 on the corner seats A501 and the corner seat B503, so that the U-shaped strips 402 at the top inner walls of the prism grooves 10 attached to the two corner seats A501 are in compliance with the surface of the power adapter body 2;

[0043] The waterproof seal B4 includes a U-shaped strip 402, the middle of the U-shaped strip 402 is integrally formed with a conical sleeve 401, the waterproof seal A3 is processed with a seal notch 7, one end of the power adapter body 2 is internally assembled and connected with an adapter connection line 1, and the other end of the power adapter body 2 is internally plugged and connected with an adapter plug line 6;

[0044] Among them, the waterproof seal B4 and the power adapter body 2 are both made of rubber material and silicone material. Under the premise of maintaining the stretchability of the waterproof seal B4 and the waterproof seal A3, they can be attached to the surface of the power adapter body 2 and cover the gaps around the power adapter body 2, thereby achieving a sealing effect;

[0045] like Figure 2 and Figure 5 , both ends of the waterproof seal A3 are processed with bending plates 9, a connecting strip B504 is provided between two corner seats A501 and two corner seats B503, a connecting strip A502 is provided between adjacent corner seats A501 and B503, and fastening bolts 14 are provided inside both ends of the connecting strip A502 and the connecting strip B504;

[0046] By sleeve-fitting the conical sleeve 401 onto the outside of the adapter cable 1 and clamping the narrow end of the conical sleeve 401 onto the outside of the adapter cable 1, the connection point between the adapter cable 1 and the power adapter body 2 can be sealed with the help of the conical sleeve 401.

[0047] Meanwhile, by connecting the two bending plates 9 to the two corner seats B503 respectively, and threading one end of the fastening bolt 14 into the interior of the corner seat A501 or the corner seat B503, the two corner seats A501 and the two corner seats B503 can press the U-shaped strip 402 and the waterproof seal A3 tightly against the gaps around the power adapter body 2, and ensure that the two corner seats A501 and the two corner seats B503 hold the waterproof seal B4 and the waterproof seal A3 to hoop around the power adapter body 2 (at this time, both the U-shaped strip 402 and the waterproof seal A3 on the waterproof seal B4 are in a stretched state);

[0048] Meanwhile, when the two bending plates 9 press the waterproof seal A3 against the surface of the power adapter body 2 and completely cover the interface at one end of the power adapter body 2 and the adapter plug wire 6, so that the interface is exposed from the seal slot 7, one end of the adapter plug wire 6 can pass through the interior of the seal slot 7, pressing the waterproof seal A3 against the surface of the power adapter body 2, thereby sealing the connection point between the adapter plug wire 6 and the power adapter body 2, facilitating the cooperation between the waterproof seal A3 and the waterproof seal B4 to seal the periphery of the power adapter body 2 under the support of the assembly component 5.

[0049] The above design connects the fastening bolt 14 to the corner seat A501 and the corner seat B503, connects both ends of the connecting strip A502 between the corner seat A501 and the corner seat B503, and connects the connecting strip B504 between the two corner seats A501 or the two corner seats B503 (the U-shaped strip 402 remains in a stretched state), so that the waterproof seal A3 is fixed between the two corner seats B503 through the two limit members 8 and the two bending plates 9, enabling the two corner seats A501 and the two corner seats B503 to be fixed to the four corners at the bottom of the power adapter body 2. The tapered sleeve 401 is sleeved outside the adapter connecting wire 1, and its narrow end hoops outside the adapter connecting wire 1. The stretched U-shaped strip 402 is located at the gap of the power adapter body 2. By passing one end of the adapter plug wire 6 through the interior of the seal slot 7 and pressing the waterproof seal A3 against the surface of the power adapter body 2, the connection point between the adapter plug wire 6 and the power adapter body 2 can be sealed, facilitating the guarantee of the sealing effect at the gaps of the power adapter body 2 housing.

[0050] Embodiment 2 is based on Embodiment 1. As Figures 3 to 8 shown, this embodiment introduces the specific structures of the corner seat B503 and the corner seat A501. Installation notches A11 and installation notches B12 are machined on one side of the tops of the two corner seats B503. The limit member 8 is connected in a plug-in manner inside the installation notch A11. Positioning posts 16 are integrally formed on the surfaces of the tops and bottoms of the two bending plates 9. Positioning grooves 17 are formed at the tops and bottoms on one side of the limit member 8;

[0051] Among them, the inside of the installation notch A11 and the installation notch B12 is connected. By inserting one side of the bent plate 9 into the inside of the installation notch B12, and inserting the two positioning posts 16 on the bent plate 9 into the two positioning slots 17 on the limiting member 8 respectively, the two limiting members 8 can be respectively connected to the two corner seats B503, so that the two bent plates 9 can be respectively connected to the two corner seats B503, and the surface of the waterproof seal A3 can be fitted to the surface of the power adapter body 2;

[0052] At the same time, the two limiting members 8 are both composed of a round rod on one side and a vertical plate integrally formed on its surface, and the two positioning slots 17 are located at its vertical plate. When the round rod and the vertical plate on the limiting member 8 are adaptively connected to the inside of the installation notch A11, the limiting member 8 can be fixedly connected to the corner seat B503, so that the waterproof seal A3 is fixed between the two corner seats B503, which is convenient for cooperating with the connecting strip A502 to perform its function;

[0053] Secondly, receiving slots 15 are processed inside the two feet at the bottoms of the corner seat A501 and the corner seat B503. Pressing blocks 505 are integrally formed at the bottoms of both ends of the connecting strip A502 and the connecting strip B504. By threading one end of the fastening bolt 14 into the inside of the corner seat A501 or the corner seat B503, the pressing block 505 can be located inside the receiving slot 15 to improve the stability of the connecting strip A502 and the connecting strip A502 to maintain perpendicularity, which is beneficial for connecting the two corner seats A501 and the two corner seats B503 to the power adapter body 2;

[0054] Furthermore, in order to conveniently fix the two corner seats A501 and the two corner seats B503 to the four corners at the bottom of the power adapter body 2 respectively, as Figure 3 and Figure 4 shown, the cross-sections of the receiving slot 15 and the pressing block 505 are both right trapezoids. Strip-shaped slots 13 are opened inside both ends of the connecting strip A502 and the connecting strip B504. By symmetrically arranging the pressing blocks 505 at both ends of the connecting strip A502 or both ends of the connecting strip B504, and making the inclined surfaces at the bottoms of the two pressing blocks 505 face each other, when the fastening bolts 14 at both ends of the connecting strip A502 are respectively connected to the corner seat A501 and the corner seat B503, with the cooperation of the inclined surface at the bottom of the pressing block 505 and the inclined inner wall of the receiving slot 15, the corner seat A501 and the corner seat B503 can be pulled to approach each other, and the connecting strip A502 is slidably connected to the outside of the fastening bolt 14 through the strip-shaped slot 13, which can adapt to the change of the distance between the corner seat A501 and the corner seat B503;

[0055] Meanwhile, when the fastening bolts 14 at both ends of the connecting bar B504 are connected between two corner seats A501 or two corner seats B503, the bottom inclined surface of the crimping block 505 and the inclined inner wall of the storage notch 15 can be used in cooperation to pull the two corner seats A501 or the two corner seats B503 closer to each other. Based on the fact that the connecting bar B504 is slidably connected to the outside of the fastening bolts 14 through the strip-shaped groove 13, it is convenient to automatically adapt to the change in the distance between the corner seats A501 and B503;

[0056] In some examples, by connecting the two ends of the connecting bar A502 between the corner seats A501 and B503 and connecting the connecting bar B504 between two corner seats A501 or two corner seats B503, the cooperation between the crimping block 505 and the storage notch 15 can be used to make the two corner seats A501 and the two corner seats B503 contract towards the center, which is convenient for pressing the U-shaped strip 402 at the corner of the power adapter body 2 by means of the inner prism groove 10 and driving the inner angle of the bending plate 9 to press the end of the U-shaped strip 402 on the surface of the power adapter body 2.

[0057] In the above design, by connecting the two ends of the connecting bar A502 between the corner seats A501 and B503 and connecting the connecting bar B504 between two corner seats A501 or two corner seats B503, the crimping blocks 505 processed at both ends of the connecting bar A502 and both ends of the connecting bar B504 are located inside the corresponding storage notches 15. With the cooperation between the bottom inclined surface of the crimping block 505 and the bottom inclined inner wall of the storage notch 15, when the connecting bar A502 or the connecting bar B504 approaches the bottom of the corner seat A501 or the corner seat B503, the corner seat A501 can be pulled closer to the corner seat B503, the two corner seats A501 can be pulled closer to each other, and the two corner seats B503 can be pulled closer to each other, which is convenient for the two corner seats A501 and the corner seat B503 to scale within a certain range and be fixed to the outside of the power adapter body 2 of different sizes.

[0058] Finally, it should be noted that: Obviously, the above embodiments are only examples for clearly explaining the present invention and are not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation manners here. And the obvious changes or modifications derived therefrom are still within the protection scope of the present invention.

Claims

1. A waterproof assembly structure of a power adapter, characterized in that, Comprising: A power adapter body (2); An assembly component (5), which is assembled at the bottom of the power adapter body (2); A waterproof seal B (4); A waterproof seal A (3), which cooperates with the waterproof seal B (4) and seals the periphery of the power adapter body (2) under the support of the assembly component (5); The waterproof seal B (4) includes a U-shaped strip (402), a conical sleeve (401) is integrally formed in the middle of the U-shaped strip (402), a seal groove (7) is machined inside the waterproof seal A (3), and an adapter connecting wire (1) is connected to the inside of one end of the power adapter body (2) in an assembled manner, and an adapter plug wire (6) is connected to the inside of the other end of the power adapter body (2) in a plug-in manner; The assembly component (5) includes two corner seats A (501) and two connecting strips A (502), prism grooves (10) are machined on the inner sides of the two corner seats A (501) and the two connecting strips A (502), the middle part of the U-shaped strip (402) is pasted on the top inner wall of the prism groove (10) on the two corner seats A (501), and the two ends of the U-shaped strip (402) are respectively pasted on the top inner wall of the prism groove (10) on the two corner seats B (503); Both ends of the waterproof seal A (3) are machined with bent plates (9), the two bent plates (9) are respectively connected to the two corner seats B (503), the waterproof seal A (3) is pressed against the surface of the power adapter body (2), and the interface at one end of the power adapter body (2) and the adapter plug wire (6) is completely covered, so that the interface is exposed from the seal groove (7); Receiving grooves (15) are machined inside the two feet at the bottoms of the corner seats A (501) and the corner seats B (503), a connecting strip B (504) is arranged between the two corner seats A (501) and the two corner seats B (503), a connecting strip A (502) is arranged between adjacent corner seats A (501) and corner seats B (503), crimping blocks (505) are integrally formed at the bottoms of both ends of the connecting strip A (502) and the connecting strip B (504), fastening bolts (14) are arranged inside both ends of the connecting strip A (502) and the connecting strip B (504), and one end of the fastening bolt (14) is threadedly connected to the inside of the corner seat A (501) or the corner seat B (503), so that the crimping block (505) is located inside the receiving groove (15); Wherein, the conical sleeve (401) is sleeved outside the adapter connecting wire (1) and is clamped from its narrow end to the outside of the adapter connecting wire (1), and one end of the adapter plug wire (6) passes through the inside of the seal groove (7) to press the waterproof seal A (3) against the surface of the power adapter body (2).

2. The waterproof assembly structure of a power adapter according to claim 1, wherein: On one side of the top of each of the two angle seats B (503), a mounting notch A (11) and a mounting notch B (12) are machined. A limiting member (8) is connected in a plug-in manner inside the mounting notch A (11). On the surfaces of the top and bottom of each of the two bending plates (9), positioning posts (16) are integrally formed. At the top and bottom of one side of the limiting member (8), positioning grooves (17) are formed. Among them, the inside of the mounting notch A (11) and the mounting notch B (12) is connected. One side of the bending plate (9) is inserted into the inside of the mounting notch B (12). The two positioning posts (16) on the bending plate (9) are respectively inserted into the two positioning grooves (17) on the limiting member (8).

3. The waterproof assembly structure of a power adapter according to claim 2, characterized in that: Each of the two limiting members (8) is composed of a round bar on one side and a vertical plate integrally formed on its surface. The two positioning grooves (17) are located at its vertical plate. The round bar and the vertical plate on the limiting member (8) are adaptively connected to the inside of the mounting notch A (11).

4. The waterproof assembly structure of a power adapter according to claim 1, wherein: The cross-sections of the receiving notch (15) and the crimping block (505) are both right-angled trapezoids. Strip-shaped grooves (13) are formed inside both ends of the connecting bar A (502) and the connecting bar B (504). Among them, the crimping blocks (505) are symmetrically arranged at both ends of the connecting bar A (502) or both ends of the connecting bar B (504). The inclined surfaces at the bottoms of the two crimping blocks (505) face each other.

5. The waterproof assembly structure of a power adapter according to claim 1, characterized in that: When the fastening bolts (14) at both ends of the connecting bar A (502) are respectively connected to the angle seat A (501) and the angle seat B (503), by means of the cooperation of the inclined surface at the bottom of the crimping block (505) and the inclined inner wall of the receiving notch (15), the angle seat A (501) and the angle seat B (503) are pulled to approach each other, and the connecting bar A (502) is slidably connected to the outside of the fastening bolt (14) through the strip-shaped groove (13).

6. The waterproof assembly structure of a power adapter according to claim 1, characterized in that: When the fastening bolts (14) at both ends of the connecting bar B (504) are connected between the two angle seats A (501) or the two angle seats B (503), by means of the cooperation of the inclined surface at the bottom of the crimping block (505) and the inclined inner wall of the receiving notch (15), the two angle seats A (501) or the two angle seats B (503) are pulled to approach each other, and the connecting bar B (504) is slidably connected to the outside of the fastening bolt (14) through the strip-shaped groove (13).

7. The waterproof assembly structure of a power adapter according to claim 1, wherein: When the two angle seats A (501) and the two angle seats B (503) contract towards the center, the U-shaped strip (402) is pressed against the corner of the power adapter body (2) by means of the prism groove (10) on the inner side, and the inner angle of the bending plate (9) drives the end of the U-shaped strip (402) to be pressed against the surface of the power adapter body (2).

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