Photovoltaic racking gap closure structure

Abstract

The utility model provides a photovoltaic support gap closed structure, including adhesive tape support part, sealing portion, main barb part, vice barb part, skeleton piece and springback filling, the upper integral type injection molding of adhesive tape support part is formed with sealing portion, main barb part and vice barb part, the springback filling is filled between adhesive tape support part and sealing portion, the inside of adhesive tape support part is provided with skeleton piece, the utility model fills the foaming springback filling between adhesive tape support part and sealing portion, and its high elasticity keeps deformation recovery force, makes the clearance close fitting, T type metal skeleton piece promotes the deformation resistance, and the main vice barb below vertical part forms three -dimensional locking structure, need not the glue, and the adaptation uneven gap, the springback filling porous structure combines skeleton piece, offsets the natural shrinkage of adhesive tape, guarantees long -term sealing.

Description

Technical Field

[0001] This utility model belongs to the field of bracket sealing technology, and in particular relates to a photovoltaic bracket gap sealing structure. Background Technology

[0002] During the installation of photovoltaic (PV) modules, sealing the gaps between the PV support structure and the modules is crucial for ensuring the long-term reliable operation of the system. Because PV modules are constantly exposed to the outdoor environment, impurities such as windblown sand and rainwater can easily penetrate the modules through the gaps in the support structure, leading to corrosion of metal components, short circuits, and other problems, severely impacting the module's power generation efficiency and lifespan. Traditional sealing structures typically use a single layer of solid rubber strips to directly fill the gaps, but these strips have significant drawbacks:

[0003] Structural defects lead to sealing failure: Single-layer solid rubber strips are prone to plastic deformation under long-term external pressure, forming water seepage channels. For example, the gap between the photovoltaic support column and the pre-embedded sleeve is often uneven due to installation and adjustment, making it difficult for traditional circular rubber rings to fit completely, resulting in incomplete sealing.

[0004] Installation is complex and relies on auxiliary materials: During installation, additional glue needs to be applied or special crimping tools need to be used, which not only increases construction costs, but may also cause the adhesive strip to fall off due to glue aging or improper tool operation.

[0005] Poor environmental adaptability: Ordinary rubber materials are significantly affected by temperature changes. They are prone to softening and loss at high temperatures and brittleness and cracking at low temperatures. Furthermore, long-term exposure to ultraviolet radiation will accelerate material aging, causing the rubber strip to shrink naturally, lose elasticity, and ultimately lose its sealing function.

[0006] Therefore, it is essential to invent a photovoltaic support gap sealing structure. Utility Model Content

[0007] To solve the above-mentioned technical problems, this utility model provides a photovoltaic bracket gap sealing structure, including a rubber strip support part, a sealing part, a main barb part, a secondary barb part, a skeleton piece, and a spring filler. The sealing part, the main barb part, and the secondary barb part are integrally injection molded on the upper part of the rubber strip support part. The spring filler is filled between the rubber strip support part and the sealing part. The skeleton piece is provided inside the rubber strip support part.

[0008] Preferably, the adhesive strip support, sealing part, main barb part and auxiliary barb part are integrally injection molded into a sealing adhesive strip structure, and the cross-section of the adhesive strip support part is T-shaped.

[0009] Preferably, the horizontal portion of the adhesive strip support and the arc-shaped sealing portion form an area that allows the rebound filler to be filled, and the cross-section of the metal skeleton piece inside the adhesive strip support is also T-shaped.

[0010] Preferably, the bottom of the vertical part of the adhesive strip support is provided with a main barb with a V-shaped cross section, wherein corresponding secondary barbs are mirrored on both sides of the vertical part, and the secondary barbs at the same position also form a V-shaped barb.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] This invention fills the space between the adhesive strip support and the sealing part with a resilient filler (such as EPDM foam material). Utilizing its high elasticity, it maintains its deformation recovery ability under long-term pressure, ensuring the gap remains tightly fitted. The metal skeleton sheet adopts a T-section design, matching the structure of the adhesive strip support, significantly improving the overall resistance to deformation and preventing structural collapse due to external pressure.

[0013] The V-shaped main barb below the vertical section of this invention forms a three-dimensional locking structure with the mirror-image secondary barbs on both sides. This allows for secure embedding into the appropriate gap of the bracket without the need for additional adhesive, preventing the adhesive strip from shifting or falling off. This design is particularly suitable for uneven gap scenarios, as the elastic deformation of the barbs adapts to changes in gap, ensuring reliable sealing.

[0014] The porous structure of this novel rebound filler can absorb the shrinkage stress caused by temperature changes in the material. Combined with the rigid support of the skeleton sheet, it effectively counteracts the problem of gap expansion caused by the natural shrinkage of the adhesive strip, ensuring long-term sealing performance. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0016] Figure 2 This is a schematic diagram of the semi-sectional main view structure of this utility model.

[0017] In the picture:

[0018] 1. Rubber strip support part; 2. Sealing part; 3. Main barb part; 4. Secondary barb part; 5. Skeleton piece; 6. Rebound filler. Detailed Implementation

[0019] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0020] In the description of the embodiments, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the present invention and for 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 the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of the utility model, it should be noted that unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in the present utility model based on the specific circumstances.

[0021] As attached Figure 1 To be continued Figure 2 As shown:

[0022] This utility model provides a photovoltaic bracket gap sealing structure, including a rubber strip support part 1, a sealing part 2, a main barb part 3, a secondary barb part 4, a skeleton piece 5, and a spring filler 6. The sealing part 2, the main barb part 3, and the secondary barb part 4 are integrally injection molded on the upper part of the rubber strip support part 1. The spring filler 6 is filled between the rubber strip support part 1 and the sealing part 2. The skeleton piece 5 is provided inside the rubber strip support part 1.

[0023] Furthermore, the sealing strip support 1, sealing part 2, main barb part 3, and auxiliary barb part 4 are manufactured into a complete sealing strip structure using an integrated injection molding process. This process ensures seamless joints between components through a single mold, resulting in high overall structural strength and superior sealing performance. The preferred material is ethylene propylene diene monomer (EPDM) rubber, which possesses excellent resistance to ultraviolet radiation, high and low temperatures (-50℃ to +150℃), and ozone aging. The sealing strip support 1 has a T-shaped cross-section, consisting of a horizontal section (lateral extension) and a vertical section (longitudinal extension). The length of the horizontal section matches the width of the photovoltaic bracket gap, supporting the upper sealing part 2 and contacting the bracket surface. The height of the vertical section is designed according to the gap depth, with the main barb part 3 extending from its lower end and auxiliary barb parts 4 extending from both sides, forming a "main-auxiliary" cooperative fixing structure that matches the bracket gap groove.

[0024] Furthermore, a closed filling area is formed between the upper surface of the horizontal portion of the rubber strip support 1 and the lower surface of the arc-shaped sealing portion 2. The cross-section of this area is crescent-shaped, and its height is specifically adjusted according to the curvature of the sealing portion 2. This area is used to fill the spring filler 6. The spring filler 6 is a foamed EPDM material. Its porous structure can shrink and store energy when compressed, and quickly rebound after the external force disappears, continuously maintaining the supporting force on the sealing portion 2. The filling method is synchronous injection during injection molding, ensuring that the filler is tightly bonded to the rubber strip support 1 and the sealing portion 2 without gaps. To enhance the deformation resistance of the rubber strip support 1, a metal skeleton 5 is embedded inside. The skeleton 5 is made of galvanized steel sheet and stamped. Its cross-section is also T-shaped and perfectly matches the T-shaped cross-section of the rubber strip support 1. The horizontal section is embedded in the center of the horizontal portion of the rubber strip support 1, and the vertical section is embedded in the center of the vertical portion. It is tightly wrapped and fixed with the rubber material through the injection molding process, which not only ensures that the skeleton 5 is not exposed, but also effectively limits the lateral and longitudinal deformation of the rubber strip support 1.

[0025] Furthermore, a main barb 3 is provided at the lowest point of the vertical section of the adhesive strip support 1. Its cross-section is V-shaped, with the two inclined sides forming an angle with the vertical section. This structure can elastically deform and engage with the slot or rough surface at the bottom of the bracket gap, creating a downward locking force. Simultaneously, a set of secondary barbs 4 is provided on each side of the vertical section (symmetrically along the horizontal direction). Each set of secondary barbs 4 also has a V-shaped cross-section, with its tip angle consistent with the main barb 3. The V-shaped opening direction of the secondary barbs 4 is the same as that of the main barb 3, both facing upwards, i.e., the horizontal section of the adhesive strip support 1. The materials of the main barb 3 and the secondary barbs 4 are the same as the adhesive strip body (EPDM rubber).

[0026] The working principle is as follows: First, during installation, the T-shaped vertical part of the adhesive strip support 1 is inserted directly downwards or horizontally into the gap of the photovoltaic bracket. The V-shaped tip of the main hook part 3 is inserted into the groove or rough surface at the bottom of the gap through the elastic deformation of EPDM rubber. At the same time, the V-shaped structure of the secondary hook parts 4 on both sides of the vertical part elastically opens and hooks the inner walls on both sides of the gap. The gripping force of the "main-secondary" hooks achieves the unassisted fixation of the adhesive strip and the bracket, avoiding the problem of traditional adhesive strips falling off due to glue aging or poor tool pressing.

[0027] Then, when the photovoltaic module is installed and pressed down, the foamed rebound filler 6 between the horizontal part of the rubber strip support 1 and the arc-shaped sealing part 2 is squeezed and contracts, storing elastic potential energy, pushing the sealing part 2 upward to tightly adhere to the bottom of the module; when the external pressure (such as the module's own weight, wind load) changes or disappears, the rebound filler 6, with its high resilience due to its porous structure, quickly releases potential energy and restores its volume, continuously applying an upward supporting force to the sealing part 2, ensuring that the sealing part 2 and the module and bracket always maintain surface contact, forming a dynamic sealing barrier, and avoiding water seepage gaps caused by the plastic deformation of traditional solid rubber strips.

[0028] Next, the T-shaped galvanized steel plate skeleton 5 embedded inside the rubber strip support part 1 is perfectly matched with the T-shaped cross section of the rubber strip support part 1 (the horizontal section is embedded in the center of the horizontal part, and the longitudinal section is embedded in the center of the vertical part). When the rubber strip is subjected to lateral compression (such as gap width deviation) or longitudinal tension (such as material shrinkage caused by temperature change), the skeleton 5 restricts the excessive deformation of the rubber strip support part 1 through metal rigidity, preventing it from losing its support capacity for the sealing part 2 due to structural collapse, and at the same time avoiding the failure of the rebound filler 6 due to excessive compression caused by rubber strip deformation.

[0029] Any technical solution that achieves the above-mentioned technical effects by utilizing the technical solution described in this utility model, or by designing a similar technical solution inspired by the technical solution described in this utility model, falls within the protection scope of this utility model.

Claims

1. A photovoltaic support gap sealing structure, characterized in that, The device includes a rubber strip support (1), a sealing part (2), a main barb part (3), a secondary barb part (4), a skeleton piece (5), and a spring filler (6). The sealing part (2), the main barb part (3), and the secondary barb part (4) are integrally injection molded on the upper part of the rubber strip support (1). The spring filler (6) is filled between the rubber strip support (1) and the sealing part (2). The skeleton piece (5) is provided inside the rubber strip support (1).

2. The photovoltaic support gap sealing structure as described in claim 1, characterized in that: The adhesive strip support part (1), sealing part (2), main barb part (3) and secondary barb part (4) are integrally injection molded into a sealing adhesive strip structure, and the cross section of the adhesive strip support part (1) is T-shaped.

3. The photovoltaic support gap sealing structure as described in claim 2, characterized in that: The horizontal part of the adhesive strip support part (1) and the arc-shaped sealing part (2) form an area that allows the rebound filler (6) to be filled. The metal skeleton piece (5) inside the adhesive strip support part (1) also has a T-shaped cross section.

4. The photovoltaic support gap sealing structure as described in claim 3, characterized in that: The bottom of the vertical part of the adhesive strip support part (1) is provided with a main barb part (3) with a V-shaped cross section, and corresponding secondary barb parts (4) are provided on both sides of the vertical part. The secondary barb parts (4) at the same position also form V-shaped barbs.

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