A waterproof adapter housing with strong sealing performance

Abstract

A waterproof adapter shell with strong sealing performance, an annular top step is arranged above a shell base, an outer edge of the top step is provided with a top surrounding wall extending upwards, a positioning ring wall extending downwards is arranged below a face cover, a positioning flange is arranged below the positioning ring wall, the positioning flange can be arranged on the top step, the top surrounding wall, the top step, the positioning ring wall and the positioning flange form a glue pouring groove for pouring sealant, and the shell base is provided with a wire port for penetrating a power line. The utility model realizes accurate positioning and effective constraint of the sealant. The structure ensures that the glue can completely fill and wrap the key interface area, especially makes the wire port communicated with the glue pouring groove also be fully sealed, fundamentally eliminates the water seepage and air leakage problems of the traditional structure at the power line inlet and outlet, and realizes higher and more reliable waterproof effect.

Description

Technical Field

[0001] This utility model relates to the field of power adapter technology, and in particular to a waterproof adapter shell with strong sealing performance. Background Technology

[0002] As a core power supply component for small electronic devices, the reliability of the power adapter directly affects the operational stability of the terminal device in complex environments. With the widespread application of IoT devices, outdoor electronic devices, and industrial automation equipment in humid, high-humidity, and condensation environments, traditional potting-type waterproof structures have revealed significant technical shortcomings.

[0003] Current mainstream processes use epoxy resin or polyurethane materials for full potting of PCB components. While this achieves IP67 protection, it presents economic challenges due to material costs exceeding 30% of the total adapter cost. Furthermore, the thermal stress generated during curing can lead to microcracks in precision components. Water leakage is also a common problem in the power cable inlet and outlet areas. The faceplate requires precise alignment of the inlet and outlet terminals for fixed-direction installation, resulting in low assembly efficiency. Therefore, further improvements are needed. Utility Model Content

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a waterproof adapter shell with strong sealing performance.

[0005] The technical solution adopted by one embodiment of this utility model to solve its technical problem is: a waterproof adapter shell with strong sealing performance, including a shell base and a face cover; the shell base has a box-shaped structure with an opening at the top; the face cover is installed on the shell base and surrounds a receiving cavity for placing a circuit board; The housing is provided with an annular top step above it, and an upward-extending top wall is provided at the outer edge of the top step; an annular downward-extending positioning ring wall is provided below the cover; a positioning plate is provided below the positioning ring wall; the positioning plate can be fitted onto the top step; the top wall, top step, positioning ring wall and positioning plate form a filling groove for injecting sealant. The housing is provided with a wiring port for passing a power cord through it; the wiring port extends above to the top step and connects to the potting groove; the connection terminal of the power cord can be inserted into the wiring port from above.

[0006] Optionally, the positioning plate is provided with a downwardly extending lower sealing block; the lower sealing block is inserted into the wiring port and attached to the inside of the wiring port.

[0007] Optionally, the housing is arranged in a rectangular box shape, and the cover is arranged in a rectangular plate shape; two wiring ports are provided, arranged on opposite sides of the housing.

[0008] Optionally, the two wiring ports are arranged in a centrally symmetrical manner; limiting protrusions are provided on opposite sides of the faceplate, and the limiting protrusions are arranged in a centrally symmetrical manner; the lateral side of the limiting protrusions can abut against the sidewall of the wiring port.

[0009] Optionally, the wiring port is provided with an inner sealing wall and an outer sealing wall on the inner and outer sides of the housing; the connecting terminal is provided with an inner sealing block and an outer sealing block; The inner sealing wall and the outer sealing wall are respectively provided with an inner sealing hole and an outer sealing hole; the inner sealing block and the outer sealing block can be inserted into the inner sealing hole and the outer sealing hole from above, respectively; a sealing groove is provided between the inner sealing wall and the outer sealing wall; the lower sealing block can be attached to and abut against the top of the inner sealing block.

[0010] Optionally, the inner sealing block has an inner edge protrusion on the inner side of the housing, and the inner edge protrusion abuts against the inner side of the inner sealing wall; the outer sealing block groove has an outer edge protrusion on the outer side of the housing, and the outer edge protrusion abuts against the outer side of the outer sealing wall.

[0011] Optionally, the wiring port is provided with a central sealing wall in the sealing groove; the central sealing wall divides the sealing groove into an inner sealing groove and an outer sealing groove; the outer sealing groove is located close to the outer sealing wall; the connecting terminal is provided with a central sealing block, which is inserted into the outer sealing groove.

[0012] Optionally, the housing is provided with knurled anti-slip texture.

[0013] The beneficial effects of this utility model are: 1. Superior Sealing and Reliability: A dedicated glue-filling groove, formed by a top enclosure, top step, positioning ring wall, and positioning plate, ensures precise positioning and effective constraint of the sealant. This structure guarantees that the sealant completely fills and encapsulates critical interface areas, especially ensuring a thorough seal at the wiring ports connected to the glue-filling groove. This fundamentally eliminates the water seepage and air leakage problems that easily occur at power cord inlets and outlets in traditional structures, achieving a higher level of reliable waterproofing.

[0014] 2. Significantly Reduced Costs and Process Complexity: Compared to the traditional process of fully potting the entire PCB assembly, this solution only requires localized potting within a pre-designed annular potting groove to achieve core protection. This significantly reduces the amount of sealant used, directly lowering material costs, which constitute a large proportion of the total cost. Simultaneously, the thermal stress generated by localized potting is far less than that of overall potting, effectively avoiding the potential for micro-cracks in precision electronic components caused by curing stress, improving long-term product reliability, and reducing warranty costs.

[0015] 3. Optimized production and assembly efficiency: The faceplate is precisely positioned and overlapped with the top step of the housing via the positioning ring wall and positioning plate, making the assembly process simple and intuitive, eliminating the need for specific orientation alignment of cables, and improving the assembly efficiency of the faceplate. In addition, the integrated glue dispensing tank design simplifies the glue dispensing process, making it easier for automated production and quality control, thereby improving overall production efficiency.

[0016] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0017] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a schematic diagram of the structure of the waterproof adapter shell of this utility model; Figure 2 Bit Figure 1 Exploded view of the waterproof adapter casing; Figure 3 for Figure 1 Cross-sectional view of the waterproof adapter housing.

[0018] Explanation of key component symbols: 10. Housing; 11. Top step; 12. Top enclosure; 20. Face cover; 21. Positioning ring wall; 22. Positioning plate; 23. Lower sealing block; 24. Limiting protrusion; 30. Glue potting groove; 40. Wiring port; 41. Inner sealing wall; 42. Outer sealing wall; 43. Inner sealing hole; 44. Outer sealing hole; 45. Sealing groove; 451. Inner sealing groove; 452. Outer sealing groove; 46. Middle sealing wall; 50. Connecting terminal; 51. Inner sealing block; 52. Outer sealing block; 53. Inner edge protrusion; 54. Outer edge protrusion; 55. Middle sealing block. Detailed Implementation

[0019] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0020] In the description of this utility model, "multiple" means two or more; "greater than," "less than," and "exceeding" are understood to exclude the stated number; "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly specifying the number of indicated technical features or their sequential relationship.

[0021] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0022] In this utility model, unless otherwise explicitly defined, the terms "setting," "installing," and "connecting" should be interpreted broadly. For example, they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to a fixed connection, a detachable connection, or an integral molding; they can refer to a mechanical connection; they can refer to the internal connection of two components or the interaction between two components. Those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0023] Example Reference Figures 1 to 3 The present invention proposes a waterproof adapter housing with strong sealing performance, including a housing base 10 and a face cover 20; the housing base 10 has a box-shaped structure with an opening at the top; the face cover 20 is installed on the housing base 10 and surrounds a receiving cavity for placing a circuit board. A ring-shaped top step 11 is provided above the housing 10, and an upwardly extending top wall 12 is provided on the outer edge of the top step 11; a ring-shaped positioning ring wall 21 is provided below the faceplate 20; a positioning plate 22 is provided below the positioning ring wall 21; the positioning plate 22 can be fitted and erected on the top step 11; the top wall 12, the top step 11, the positioning ring wall 21 and the positioning plate 22 form a glue-filling groove 30 for injecting sealant; The housing 10 is provided with a wiring port 40 for passing a power cord through it; the wiring port 40 extends above to the top step 11 and connects to the potting groove 30; the connection terminal 50 of the power cord can be snapped into the wiring port 40 from above.

[0024] The beneficial effects of this utility model are: 1. Superior Sealing and Reliability: A dedicated glue-filling groove 30, formed by the top enclosure 12, top step 11, positioning ring wall 21, and positioning plate 22, achieves precise positioning and effective constraint of the sealant. This structure ensures that the sealant completely fills and wraps the critical interface area, especially ensuring a thorough seal at the wiring port 40 connected to the glue-filling groove 30. This fundamentally eliminates the water seepage and air leakage problems that easily occur at the power cord inlets and outlets in traditional structures, achieving a higher level and more reliable waterproofing effect.

[0025] 2. Significantly Reduced Costs and Process Complexity: Compared to the traditional process of fully potting the entire PCB assembly, this solution only requires localized potting within a pre-designed annular potting groove of 30mm to achieve core protection. This significantly reduces the amount of sealant used, directly lowering material costs, which constitute a large proportion of the total cost. Simultaneously, the thermal stress generated by localized potting is far less than that of overall potting, effectively avoiding the potential for micro-cracks in precision electronic components caused by curing stress, improving long-term product reliability, and reducing warranty costs.

[0026] 3. Optimized production and assembly efficiency: The faceplate 20 is precisely positioned and overlapped with the top step 11 of the housing 10 through the positioning ring wall 21 and the positioning plate 22, making the assembly process simple and intuitive, eliminating the need for specific orientation alignment of cables, and improving the assembly efficiency of the faceplate 20. In addition, the integrated glue potting tank 30 design simplifies the glue potting process, making it easier for automated production and quality control, thereby improving overall production efficiency.

[0027] In this embodiment, the positioning plate 22 has a downwardly extending lower sealing block 23; the lower sealing block 23 engages with the wiring port 40 and is affixed to the inner side of the wiring port 40. The lower sealing block 23 extending vertically from the positioning plate 22 directly engages with the wiring port 40, acting as a "plug". This firstly physically blocks the main path for moisture to directly invade the wiring port 40 from above. The sealing block is tightly fitted to the inner wall of the wiring port 40, which itself constitutes an independent sealing interface. Combined with the subsequently injected sealant, a multi-layer sealing barrier of "physical interlocking + chemical bonding" is formed in the area of ​​the wiring port 40, significantly improving the waterproof level and reliability of this weak point.

[0028] In this embodiment, the housing 10 is arranged in a rectangular box shape, and the cover 20 is arranged in a rectangular plate shape. Two wiring ports 40 are provided, located on opposite sides of the housing 10. The rectangular shape is the standard form of an adapter, which helps save installation space and makes it easy to integrate into various devices, resulting in high versatility. The two opposite wiring ports 40, one as a power input and the other as a power output, clearly distinguish the power input and output, preventing cables from tangling inside the housing and facilitating wiring installation in specific application scenarios.

[0029] Furthermore, the two connection ports 40 are arranged in a centrally symmetrical manner; limiting protrusions 24 are provided on opposite sides of the faceplate 20, and the limiting protrusions 24 are also arranged in a centrally symmetrical manner; the lateral sides of the limiting protrusions 24 can abut against the sidewalls of the connection ports 40. By setting both the connection ports 40 and the limiting protrusions 24 in a "centrally symmetrical" layout, the faceplate 20 can be correctly installed in both 0° and 180° directions without needing to distinguish a specific orientation when assembling with the housing 10. This simplifies the judgment process for operators, effectively prevents rework caused by incorrect orientation, and is particularly suitable for automated assembly line production, significantly improving assembly efficiency.

[0030] In this embodiment, the wiring port 40 is provided with an inner sealing wall 41 and an outer sealing wall 42 on the inner and outer sides of the housing 10; the connecting terminal 50 is provided with an inner sealing block 51 and an outer sealing block 52; the inner sealing wall 41 and the outer sealing wall 42 are respectively provided with an inner sealing hole 43 and an outer sealing hole 44; the inner sealing block 51 and the outer sealing block 52 can be inserted into the inner sealing hole 43 and the outer sealing hole 44 from above; a sealing groove 45 is provided between the inner sealing wall 41 and the outer sealing wall 42; the lower sealing block 23 can be attached to and abut against the top of the inner sealing block 51. Through the cooperation of the inner sealing wall 41 / outer sealing wall 42 and the inner sealing block 51 / outer sealing block 52, two independent sealing gates are formed in the radial direction of the power line. Combined with the adhesive seal of the middle sealing groove 45, a triple-layer defense system of "inner mechanical seal - middle adhesive seal - outer mechanical seal" is formed.

[0031] Specifically, the inner sealing block 51 has an inner edge protrusion 53 on the inner side facing the housing 10, and the inner edge protrusion 53 abuts against the inner side of the inner sealing wall 41; the outer sealing block 52 has an outer edge protrusion 54 on the outer side of the housing 10, and the outer edge protrusion 54 abuts against the outer side of the outer sealing wall 42. The inner edge protrusion 53 abuts against the inner side of the inner sealing wall 41, and the outer edge protrusion 54 abuts against the outer side of the outer sealing wall 42, which makes the connecting terminal 50 firmly "locked" in the thickness direction of the housing after it is inserted into the wiring port 40, making it difficult to come out due to pulling or vibration.

[0032] In this embodiment, the wiring port 40 has a central sealing wall 46 within the sealing groove 45; the central sealing wall 46 divides the sealing groove 45 into an inner sealing groove 451 and an outer sealing groove 452; the outer sealing groove 452 is located near the outer sealing wall 42; the connecting terminal 50 has a central sealing block 55, which engages with the outer sealing groove 452. The central sealing wall 46 divides the sealing groove 45 into inner and outer independent cavities, providing a two-layer sealing structure in the middle.

[0033] In this embodiment, the housing 10 is provided with knurled anti-slip texture. The knurled anti-slip texture provided on the outer surface of the housing 10 can increase the friction coefficient between the adapter and the mounting surface and prevent sliding in inclined or vibrating environments.

[0034] Of course, this utility model is not limited to the above-described embodiments. Those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of this utility model. All such equivalent modifications and substitutions are included within the scope defined by the claims of this application.

Claims

1. A waterproof adapter housing with strong sealing performance, comprising a housing base (10) and a faceplate (20); the housing base (10) has a box-like structure with an opening at the top; the faceplate (20) is installed on the housing base (10) and surrounds a receiving cavity for placing a circuit board; characterized in that: The housing (10) is provided with an annular top step (11) above it, and the outer edge of the top step (11) is provided with an upwardly extending top wall (12); the cover (20) is provided with an annular downwardly extending positioning ring wall (21) below it; a positioning plate (22) is provided below the positioning ring wall (21); the positioning plate (22) can be fitted onto the top step (11); the top wall (12), the top step (11), the positioning ring wall (21) and the positioning plate (22) form a glue-filling groove (30) for filling sealant; The housing (10) is provided with a wiring port (40) for passing through a power cord; the wiring port (40) extends above the top step (11) and connects to the potting groove (30); the connecting terminal (50) of the power cord can be inserted into the wiring port (40) from above.

2. The waterproof adapter housing with strong sealing performance according to claim 1, characterized in that: The positioning plate (22) is provided with a downwardly extending lower sealing block (23); the lower sealing block (23) is inserted into the wiring port (40) and attached to the inside of the wiring port (40).

3. The waterproof adapter housing with strong sealing performance according to claim 2, characterized in that: The housing (10) is arranged in a rectangular box shape, and the cover (20) is arranged in a rectangular plate shape; there are two wiring ports (40), which are arranged on opposite sides of the housing (10).

4. The waterproof adapter housing with strong sealing performance according to claim 3, characterized in that: The two connection ports (40) are arranged in a centrally symmetrical manner; the faceplate (20) is provided with limiting protrusions (24) on opposite sides, and the limiting protrusions (24) are arranged in a centrally symmetrical manner; the side of the limiting protrusions (24) can abut against the side wall of the connection port (40).

5. The waterproof adapter housing with strong sealing performance according to claim 2, characterized in that: The wiring port (40) is provided with an inner sealing wall (41) and an outer sealing wall (42) on the inner and outer sides of the housing (10); the connecting terminal (50) is provided with an inner sealing block (51) and an outer sealing block (52); The inner sealing wall (41) and the outer sealing wall (42) are respectively provided with an inner sealing hole (43) and an outer sealing hole (44); the inner sealing block (51) and the outer sealing block (52) can be inserted into the inner sealing hole (43) and the outer sealing hole (44) from above; a sealing groove (45) is provided between the inner sealing wall (41) and the outer sealing wall (42); the lower sealing block (23) can be attached to and abut against the top of the inner sealing block (51).

6. The waterproof adapter housing with strong sealing performance according to claim 5, characterized in that: The inner sealing block (51) has an inner edge protrusion (53) facing the inner side of the housing (10), and the inner edge protrusion (53) abuts against the inner side of the inner sealing wall (41); the outer sealing block (52) has an outer edge protrusion (54) on the outer side of the housing (10), and the outer edge protrusion (54) abuts against the outer side of the outer sealing wall (42).

7. The waterproof adapter housing with strong sealing performance according to claim 5, characterized in that: The wiring port (40) is provided with a central sealing wall (46) in the sealing groove (45); the central sealing wall (46) divides the sealing groove (45) into an inner sealing groove (451) and an outer sealing groove (452); the outer sealing groove (452) is located close to the outer sealing wall (42); the connecting terminal (50) is provided with a central sealing block (55), which is inserted into the outer sealing groove (452).

8. The waterproof adapter housing with strong sealing performance according to claim 1, characterized in that: The housing (10) is provided with knurled anti-slip texture.

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