Multi-layer composite compression type high-reliability waterproof sealing structure

Abstract

This utility model discloses a multi-layer composite compression-type high-reliability waterproof sealing structure, including an upper compression frame and a transparent panel. The key features are: a transparent panel and a lower support frame are sequentially screwed and fastened to the lower part of the upper compression frame; a first sealing layer is provided between the transparent panel and the upper compression frame; a second sealing strip is filled in the gap between the upper compression frame and the lower support frame; several panel through holes are provided on the transparent panel; several screw through holes are provided on the side of the upper compression frame; several press-fit screw posts are vertically riveted upwards to the side of the lower support frame; the outer ring of the press-fit screw posts is threaded with a lock nut. The double-layer sealing structure makes the sealing structure more stable; the use of the second sealing strip blocks lateral water seepage, enhancing reliability. Only lock nuts are provided on the press-fit screw posts; by removing the lock nuts, the upper compression frame and transparent panel can be disassembled, facilitating maintenance and replacement of the first sealing layer.

Description

Technical Field

[0001] This utility model relates to waterproof sealing structures, and more particularly to a multi-layer composite compression type high-reliability waterproof sealing structure. Background Technology

[0002] Currently, common waterproof sealing methods for flat openings include silicone gasket compression sealing, sealant potting, and simple single-layer cover plate with gasket sealing; however, existing waterproof sealing structures have the following shortcomings: 1. Under long-term vibration, the sealant of a single-layer gasket is prone to cracking after aging, resulting in insufficient reliability. Second, the structure of the sealant injection is difficult to disassemble, and the single-layer sealing gasket needs to be replaced after disassembly, which increases the maintenance difficulty. Utility Model Content

[0003] To address the shortcomings of the aforementioned technologies, this utility model provides a multi-layer composite compression type high-reliability waterproof sealing structure.

[0004] To solve the above technical problems, the technical solution adopted by this utility model is: a multi-layer composite compression type high reliability waterproof sealing structure, including an upper compression frame and a transparent panel, with the transparent panel and a lower support frame being fastened to the lower part of the upper compression frame by screws in sequence; A first sealing layer is provided between the transparent panel and the upper pressing frame, and a second sealing strip is provided to fill the gap between the upper pressing frame and the lower support frame. The transparent panel has several panel through holes, the upper clamping frame has several screw through holes on its side, and the lower support frame has several press-fit screw posts riveted vertically upwards on its side. The panel through holes, screw through holes and press-fit screw posts are set one-to-one; the outer ring of the press-fit screw posts is threaded with anti-loosening nuts.

[0005] Furthermore, the two sides of the upper clamping frame have a Z-shaped bending structure.

[0006] Furthermore, the first sealing layer includes a first sealing groove and a main sealing gasket; the upper end face of the upper pressing frame is provided with a first sealing groove to place the main sealing gasket, and the lower end of the main sealing gasket tightly abuts against the transparent panel.

[0007] Furthermore, several guide positioning posts are fixedly installed on the upper end face of the lower support frame, and several guide holes are opened on the lower end face of the upper clamping frame, with the guide positioning posts and guide holes corresponding one-to-one.

[0008] Furthermore, the outer wall of the lock nut is interference-fitted with a protective cap, which is inserted into the post of the press-fit screw.

[0009] Furthermore, a buffer pad is provided between the anti-loosening nut and the upper clamping frame.

[0010] Furthermore, reinforcing ribs are provided at the top corners of the upper clamping frame, and the reinforcing ribs are fixedly installed on the upper surface of the equipment housing.

[0011] Furthermore, the reinforcing ribs are all triangular in structure.

[0012] Furthermore, several reinforcing ribs are fixedly provided at equal intervals on the top surface of the upper clamping frame.

[0013] This utility model discloses a multi-layer composite compression-type high-reliability waterproof sealing structure, which has the following beneficial effects: First, a first sealing layer is set between the upper clamping frame and the transparent panel, and the upper clamping frame, transparent panel and lower support frame are fastened together by rivet screws. A second sealing strip is filled between the gap left between the upper clamping frame and the lower support frame. The double-layer sealing structure provides high rigidity and makes the sealing structure more stable. The use of the second sealing strip blocks lateral water seepage, reduces the water seepage path, further reduces the aging of the sealant and enhances reliability. 2. The first sealing layer between the upper clamping frame and the transparent panel is clamped and fixed by the rivet screw post. Only the anti-loosening nut is set on the rivet screw post. By removing the anti-loosening nut, the upper clamping frame and the transparent panel can be removed, which is convenient for maintenance and also convenient for replacing the first sealing layer. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model.

[0015] Figure 2 This is the front view of the present invention.

[0016] Figure 3 This is a cross-sectional view of the present invention.

[0017] In the diagram: 1. Transparent panel; 2. Main sealing gasket; 3. First sealing groove; 4. Upper clamping frame; 5. Lower support frame; 6. Press-fit screw post; 7. Anti-loosening nut; 8. Screw through hole; 9. Panel through hole; 10. Waterproof and breathable valve; 11. Second sealing strip; 12. Protective cap; 13. Buffer pad; 14. Reinforcing rib; 15. Reinforcing rib. Detailed Implementation

[0018] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0019] Figure 1-3The multi-layer composite compression type high reliability waterproof sealing structure shown includes a transparent panel 1. The transparent panel 1 is made of high-strength, weather-resistant acrylic sheet or polycarbonate sheet as the main body. In this embodiment, the transparent panel 1 is a high-strength acrylic sheet, which has good resistance to environmental changes. The weather-resistant material is selected so that it can adapt to temperature changes and ultraviolet radiation.

[0020] The upper end face of the transparent panel 1 is provided with an upper pressing frame 4, and the two sides of the upper pressing frame 4 are Z-shaped bent; a first sealing layer is provided between the transparent panel 1 and the upper pressing frame 4; the upper pressing frame 4 is formed by sheet metal stamping and bending, such as stainless steel, galvanized steel plate and aluminum alloy plate. In this embodiment, the upper pressing frame 4 is formed by stamping and bending stainless steel on all four sides upward. In this embodiment, the first sealing layer includes a first sealing groove 3 and a main sealing gasket 2; the upper end face of the upper pressing frame 4 is provided with a square first sealing groove 3 to accommodate and position a part of the main sealing gasket 2 to ensure the correct compression direction; the main sealing gasket 2 is placed inside the first sealing groove 3, and the lower end of the main sealing gasket 2 tightly abuts against the transparent panel 1; the material of the main sealing gasket 2 is a silicone rubber gasket or an EPDM rubber gasket that is resistant to high and low temperatures and aging. In this embodiment, the material of the main sealing gasket 2 is a silicone rubber gasket.

[0021] A lower support frame 5 is fixedly installed below the upper clamping frame 4; the lower support frame 5 is made of sheet metal and serves as the basic support component of the entire sealing structure. The lower end of the lower support frame 5 is fixedly connected to the equipment housing, and the inner contour of the lower support frame 5 is slightly larger than the inner contour of the upper clamping frame 4.

[0022] The transparent panel 1 has several panel through holes 9, which are located on the non-functional area of ​​the edge of the transparent panel 1. The upper clamping frame 4 has several screw through holes 8 on one side, and the lower support frame 5 has several press-fit screw posts 6 on one side to cooperate with the screw through holes 8. The panel through holes 9, screw through holes 8 and press-fit screw posts 6 are arranged one-to-one. In this embodiment, the press-fit screw posts 6 are symmetrically arranged on the lower support frame 5. The press-fit screw posts 6 are pre-fixed to the lower support frame 5 by press-fitting process. They protrude outward perpendicular to the mounting plane and are made of stainless steel. The multiple press-fit screw posts 6 can evenly distribute the clamping force to ensure that the main sealing gasket 2 is compressed evenly at all points.

[0023] A panel through hole 9 is provided on the transparent panel 1 at the position corresponding to the press screw post 6. The diameter of the panel through hole 9 is larger than the outer diameter of the press screw post 6 to avoid stress on the transparent panel 1. The upper clamping frame 4 has a screw through hole 8 at the position corresponding to the rivet screw post 6. The diameter of the screw through hole 8 is slightly larger than the outer diameter of the rivet screw post 6 to ensure that the rivet screw post 6 can pass through.

[0024] The outer ring of the press-fit screw post 6 is threaded with a lock nut 7. The lock nut 7 is configured to fit one-to-one with the press-fit screw post 6. In this embodiment, the lock nut 7 is a nylon locking nut that matches the press-fit screw post 6. When the nylon locking nut is screwed into the press-fit screw post 6, the nylon ring is forcibly opened by the bolt thread, resulting in elastic deformation. Under vibration, the slight relative displacement of the bolt and nut is offset by the elastic restoring force of the nylon, continuously maintaining the pressure of the bolt and thus preventing loosening. The lock nut 7 is only provided on the press-fit screw post 6. By loosening the lock nut 7, the upper clamping frame 4 and the transparent panel 1 can be removed and maintained, and the main sealing gasket 2 can be easily replaced.

[0025] Several guide positioning posts are fixedly installed on the upper end face of the lower support frame 5, and several guide holes are opened on the lower end face of the upper clamping frame 4. The guide positioning posts are set one-to-one with the guide holes. During installation, the guide positioning posts are inserted into the corresponding guide holes of the upper clamping frame 4 to ensure the accurate positioning of the transparent panel 1 and the upper clamping frame 4 and prevent misalignment from affecting the seal.

[0026] A second sealing strip 11 is provided to fill the gap between the upper clamping frame 4 and the lower support frame 5; the second sealing strip 11 is a foamed rubber sealing strip or an elastic sealant. In this embodiment, the second sealing strip 11 is an elastic sealant, forming a second barrier against moisture and splashes, blocking trace amounts of water vapor that seep in along the rivet screw post 6 or the mating surface.

[0027] The assembly process in this embodiment specifically includes: 1. Place the main sealing gasket 2 into the first sealing groove 3 of the upper clamping frame 4; 2. Place the transparent panel 1 on the main sealing gasket 2 and align the panel through hole 9 with the rivet screw post 6 of the lower support frame 5; high rigidity is achieved through the double-layer sheet metal frame of the upper clamping frame 4 and the lower support frame 5. 3. Guide the transparent panel 1 with the upper clamping frame 4 and the main sealing gasket 2 to the lower support frame 5 through the guide positioning post, and make the rivet screw post 6 pass through the panel through hole 9 of the transparent panel 1 and the screw through hole 8 of the upper clamping frame 4 in sequence. 4. Use a torque tool to tighten the anti-loosening nut 7 on the press-fit screw post 6 according to the set torque; during the tightening process, the upper clamping frame 4 moves downward and presses down on the transparent panel 1, and the transparent panel 1 presses upward on the main sealing gasket 2. The main sealing gasket 2 is compressed between the transparent panel 1 and the first sealing groove 3 of the upper clamping frame 4, forming the first core waterproof sealing line; not only can the press-fit screw post 6 provide a stable support point, but the anti-loosening nut 7 can also effectively resist loosening caused by vibration; 5. The upper clamping frame 4 is pressed onto the lower support frame 5 by screws; 6. A second sealing strip 11 is filled in the gap between the upper pressing frame 4 and the lower support frame 5 to form a second core waterproof sealing line.

[0028] The main sealing gasket 2 is pressed by the transparent panel 1, and the acrylic plate is pressed by the upper pressing frame 4 to form a strong main seal. Combined with the second sealing strip of the upper pressing frame 4 and the lower support frame 5, lateral water seepage is blocked, reducing the water seepage path.

[0029] The outer wall of the anti-loosening nut 7 is interference-fitted with a protective cap 12, which is inserted into the rivet post 6. The protective cap 12 is fastened onto the anti-loosening nut 7 installed on the rivet post 6, which not only improves aesthetics but also prevents accidental damage and loosening of the nut. A buffer pad 13 is provided between the anti-loosening nut 7 and the upper clamping frame 4. The buffer pad 13 is made of an elastomer, such as rubber or polyurethane. In this embodiment, the buffer pad 13 is polyurethane, used to absorb vibration and impact, further preventing loosening, and also preventing metal parts from directly damaging the transparent panel 1 or the upper clamping frame 4, protecting the fasteners and sealing surfaces.

[0030] Reinforcing ribs 15 are provided at the top corners of the upper clamping frame 4, and the reinforcing ribs 15 are fixedly installed on the equipment housing; in this embodiment, the reinforcing ribs 15 are triangular. Several reinforcing ribs 14 are fixedly arranged at equal intervals on the top surface of the upper clamping frame 4. In this embodiment, two reinforcing ribs 14 are fixedly arranged on the top surface of the upper clamping frame 4, which increases the frame rigidity and resistance to deformation, and ensures that the pressure is evenly distributed across the entire clamping surface. The reinforcing ribs 14 and ribs 15 can prevent the double-layer sheet metal frame from deforming.

[0031] A multi-layer composite compression type high-reliability waterproof sealing structure is installed on the equipment box. The equipment box is also equipped with a waterproof vent valve 10 to balance the internal and external air pressure difference, prevent negative pressure water absorption, and maintain good waterproof performance.

[0032] This invention provides high rigidity by fastening the upper clamping frame 4 and the lower support frame 5 with screws to form a double-layer sheet metal frame, making the structure more stable. A second sealing strip 11 is added between the two to prevent lateral water seepage. This multi-layer sealing structure further reduces the seepage path. The upper clamping frame 4 and the transparent panel 1 can be disassembled and maintained simply by setting anti-loosening nuts 7 on the rivet screw posts 6. The multi-layer clamping structure offers advantages such as easy maintenance, vibration resistance, and aging resistance, providing a highly reliable waterproof seal. It is suitable for outdoor electronic equipment, lighting fixtures, instruments, and other applications, not only providing excellent waterproof performance but also maintaining long-term stability and reducing equipment failures.

[0033] The above embodiments are not intended to limit the present utility model, nor is the present utility model limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the technical solution of the present utility model are also within the protection scope of the present utility model.

Claims

1. A multi-layer composite compression-type high-reliability waterproof sealing structure, comprising an upper compression frame (4) and a transparent panel (1), characterized in that: A transparent panel (1) and a lower support frame (5) are connected to the lower part of the upper clamping frame (4) by screws. A first sealing layer is provided between the transparent panel (1) and the upper pressing frame (4), and a second sealing strip (11) is provided to fill the gap between the upper pressing frame (4) and the lower support frame (5). The transparent panel (1) has several panel through holes (9), the upper clamping frame (4) has several screw through holes (8) on its side, and the lower support frame (5) has several press screw posts (6) riveted vertically upward on its side. The panel through holes (9), screw through holes (8) and press screw posts (6) are set one-to-one; the outer ring of the press screw post (6) is threaded with a lock nut (7).

2. The multi-layer composite compression type high-reliability waterproof sealing structure according to claim 1, characterized in that: The upper pressing frame (4) has a Z-shaped bending structure on both sides.

3. The multi-layer composite compression type high-reliability waterproof sealing structure according to claim 1, characterized in that: The first sealing layer includes a first sealing groove (3) and a main sealing gasket (2); the upper end face of the upper pressing frame (4) is provided with a first sealing groove (3) to place the main sealing gasket (2), and the lower end of the main sealing gasket (2) tightly abuts against the transparent panel (1).

4. The multi-layer composite compression type high-reliability waterproof sealing structure according to claim 1, characterized in that: The upper end face of the lower support frame (5) is fixedly provided with several guide positioning posts, and the lower end face of the upper pressing frame (4) is provided with several guide holes, with the guide positioning posts and guide holes corresponding one to one.

5. The multi-layer composite compression type high-reliability waterproof sealing structure according to claim 1, characterized in that: The outer wall of the anti-loosening nut (7) is interference-fitted with a protective cap (12), which is inserted into the rivet screw post (6).

6. The multi-layer composite compression type high-reliability waterproof sealing structure according to claim 1, characterized in that: A buffer pad (13) is provided between the anti-loosening nut (7) and the upper clamping frame (4).

7. The multi-layer composite compression type high-reliability waterproof sealing structure according to claim 1, characterized in that: The top corner of the upper pressing frame (4) is provided with reinforcing ribs (15), which are fixedly installed on the upper surface of the equipment box.

8. The multi-layer composite compression type high-reliability waterproof sealing structure according to claim 7, characterized in that: The reinforcing ribs (15) are all triangular in structure.

9. The multi-layer composite compression type high-reliability waterproof sealing structure according to claim 1, characterized in that: The top surface of the upper pressing frame (4) is fixed with several reinforcing ribs (14) at equal intervals.

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