Plastic corner connector and photovoltaic module

Abstract

The utility model belongs to the technical field of photovoltaic modules, and relates to a plastic corner connector and a photovoltaic module. The plastic corner connector comprises a fixed edge and a bent part connected with the fixed edge, the fixed edge and the bent part are made of plastic materials and integrally formed in an injection molding mode, and the fixed edge comprises a main body frame and a connecting rib arranged in the main body frame and connected with the inner side and the outer side of the main body frame. And a connecting rib is at least arranged at the end part of the fixed edge and / or at the root position near the bent part. Compared with the prior art, the corner connector has the advantages of light weight, low cost, reasonable design and the like as the fixed edge and the bent part are made of plastic materials and are integrally formed by injection molding compared with a corner connector made of metal materials. Besides, due to the arrangement of the connecting ribs, the special defects caused by plastic materials are avoided, namely, the problem that weld lines are formed at the tail end and / or the root of the main body frame in the injection molding machining process due to the fact that the position of the metal corner connector is of a cavity structure directly is solved, and the overall strength of the corner connector is improved. And the application range is wider.

Description

Technical Field

[0001] This invention belongs to the field of photovoltaic module technology, specifically relating to a plastic corner bracket and a photovoltaic module. Background Technology

[0002] Corner brackets are components that connect two perpendicular or other angled edges. They are an important part of the photovoltaic module frame, securing the connection between the photovoltaic panel and the frame, ensuring the stability and safety of the photovoltaic panel. As structural components located within the frame and connecting edges intersecting at a certain angle, they are typically made of metal. Corner brackets are usually designed with one end at an acute angle for easy insertion into the slots of the frame. Multiple hollow cavities in the design save aluminum material without compromising the bracket's strength. The inner wall has serrations to effectively prevent the bracket from falling off, and after riveting, it grips the aluminum frame even more firmly. Different shaped notches or clearance structures are provided on the inner side at the connection point of the two arms to prevent the formation of chamfers, rounded corners, or burrs during processing, which could cause assembly interference problems when assembling with other components, such as damaging the sharp ends of the photovoltaic panel during installation and use. However, metal corner brackets generate more waste and are more expensive to manufacture, making it difficult to meet the cost reduction requirements for photovoltaic module products. Summary of the Invention

[0003] To overcome one of the aforementioned technical problems in the prior art, the present invention aims to provide a lightweight, low-cost, and rationally designed plastic corner bracket and photovoltaic module, specifically achieved through the following technical solution:

[0004] A plastic corner bracket includes a fixed edge and a bent portion connecting the fixed edge. The fixed edge and the bent portion are integrally injection molded from plastic material. The fixed edge includes a main frame and a connecting rib provided within the main frame to connect the inner and outer sides of the main frame. The connecting rib is provided at least at the end of the fixed edge and / or at the root position near the bent portion.

[0005] Optionally, the thickness of the connecting rib is less than the thickness of the main frame of the fixed side.

[0006] Optionally, the connecting rib has a hollow cavity at its center.

[0007] Optionally, the inner and outer sides of the fixed edge end of the main frame contract and extend to the end of the main frame to form an acute angle structure.

[0008] Optionally, the side of the fixed edge end has a chamfered structure.

[0009] Optionally, the side of the fixed edge at the end of the main frame is rounded.

[0010] Optionally, a recess is provided on the inner side of the fixed edge, located on the main frame, and a corner bracket buckle is provided in the recess. The top of the corner bracket buckle is 0.1~0.5mm higher than the plane of the main frame.

[0011] Optionally, the inner corner of the bending portion is 90°, and its projection in the side direction is a right angle, that is, there is no notch or clearance structure.

[0012] The present invention also provides a plastic corner bracket and a photovoltaic module, including the plastic corner bracket described in any of the foregoing technical solutions.

[0013] Compared to existing technologies, this invention uses a single injection-molded plastic material for both the fixed edge and the bent portion, offering advantages such as lighter weight, lower cost, and more rational design compared to metal corner brackets. Furthermore, the inclusion of connecting ribs avoids the inherent defects of plastic materials, such as the hollow structure that would form weld lines at the ends and / or roots of the main frame during injection molding, thus improving the overall strength of the corner bracket. This also broadens its application range. Attached Figure Description

[0014] Figure 1 This is a three-dimensional view of the plastic corner bracket described in Example 1.

[0015] Figure 2 This is a side view of the plastic corner bracket described in Example 1.

[0016] Figure 3 This is the front view of the plastic corner bracket described in Example 1.

[0017] In the figure, the reference numerals are: fixed side 1, main frame 101, inner side 1011, outer side 1012, connecting rib 102, end 103, end 1031, root 104, cavity 105, chamfered structure 106, rounded corner 107, recess 108, corner bracket buckle 109, and bending part 2. Detailed Implementation

[0018] The specific implementation of this application is described in detail below through examples. However, the specific implementation of this application is not intended to limit the technical solution of this application. Any non-substantial changes, such as replacing common technical solutions in the field, using the technical solutions described in the embodiments of this application are within the protection scope of this application. Example 1

[0019] like Figure 1 , Figure 2 , Figure 3The illustrated plastic corner bracket includes a fixed edge 1 and a bent portion 2 connecting the fixed edge 1. Both the fixed edge 1 and the bent portion 2 are integrally injection molded from plastic. The fixed edge 1 includes a main frame 101 and connecting ribs 102 located within the main frame 101, connecting the inner side 1011 and the outer side 1012 of the main frame 101. Connecting ribs 102 are provided at least at the end 103 of the fixed edge 1 and / or at the root 104 near the bent portion 2. The connecting ribs 102 prevent welding at the end 103 and root 104 of the fixed edge 1 during injection molding, thus preventing the weld line from extending to the end 1031 and improving the overall strength of the corner bracket.

[0020] In this embodiment, the thickness of the connecting rib 102 is less than the thickness of the main frame 101 of the fixed side 1. The connecting rib 102 can serve only the aforementioned purpose of preventing weld lines on the main frame 101, saving material usage and reducing weight and cost. In other embodiments, it can also be partially or entirely equal to or close to the thickness of the main frame 101 to enhance the strength of the main frame 101.

[0021] In this embodiment, the connecting rib 102 has a hollow cavity 105 at its center. This provides space for downward deformation when the frame is installed, preventing damage to the corner bracket clip 109 or the frame clip during transitional assembly.

[0022] In this embodiment, the main frame 101 of the inner side 1011 and the outer side 1012 of the fixed edge 1 extends to the end 1031 of the main frame 101, forming an acute angle structure. This facilitates guidance during assembly with the frame and improves the efficiency of frame assembly.

[0023] In this embodiment, the side of the fixed edge 1 end 103 is a chamfered structure 106. When the corner bracket is assembled into the frame, it further serves as a guide, while preventing the corner bracket from poking into the frame itself during misaligned installation, thus preventing the frame from cracking and becoming unusable. In this embodiment, the main frame 101, which works in conjunction with the inner side 1011 and outer side 1012 of the fixed edge 1 end 103, extends to the end 1031 of the main frame 101, forming an acute-angle structure, resulting in higher installation efficiency. In other embodiments, both solutions can be used independently, both providing effective assembly guidance.

[0024] In this embodiment, the side of the fixed edge 1 end 103 located at the end 1031 of the main frame 101 is rounded at an arc angle 107. This reduces the possibility of burrs at the sharp point and prevents damage to the inside of the frame and the corner clip 109. The arc angle 107, also known as the R angle, is used for the transition design of the part structure.

[0025] In this embodiment, the inner side 1011 of the fixed edge 1 has a recess 108 on the main frame 101, and a corner bracket buckle 109 is provided at the recess 108. The top of the corner bracket buckle 109 is 0.1~0.5mm higher than the plane of the main frame 101. In this example, the top of the corner bracket buckle 109 is 0.2mm higher than the plane of the inner side 1011 of the main frame 101. Those skilled in the art can choose according to actual needs, and all heights are equivalent to the height of this solution and do not exceed the protection scope of this application. This solution requires the corner bracket buckle 109 to deform and squeeze into the frame buckle when the corner bracket is installed into the frame, which increases the pull-out force between the buckles and can also improve the problem of weak strength of the corner bracket buckle 109 caused by the replacement of metal with plastic material.

[0026] In this embodiment, the inner angle 1011 of the bending portion 2 is 90°, and its projection in the side direction is a right angle, meaning there is no notch or clearance structure. This ensures that the right angle has no radius (R-angle) during injection molding, preventing assembly interference. In other embodiments, the angle may not be 90°, but the corresponding projection of the inner angle 1011 of the bending portion 2 in the side direction will also be the same angle, without any notch or clearance structure.

[0027] In this embodiment, two fixed edges are specifically set. In other embodiments, those skilled in the art can set three or more edges as needed, which is within the scope of the technical solution of this application and does not exceed the protection scope of this application. Example 2

[0028] A plastic corner bracket and a photovoltaic module, comprising the plastic corner bracket described in any of the foregoing technical solutions, and further comprising a frame and a photovoltaic panel, wherein the assembly of the frame, the photovoltaic panel and the corner bracket is well known to those skilled in the art and will not be described in detail hereafter.

[0029] It should be noted that the components used in the above embodiments can be selected or replaced by those skilled in the art according to their needs, without exceeding the scope of protection of this application.

Claims

1. A plastic corner bracket, comprising a fixed edge and a bent portion connecting the fixed edge, characterized in that, The fixed edge and the bent part are integrally injection molded from plastic material. The fixed edge includes a main frame and a connecting rib located inside the main frame to connect the inner and outer sides of the main frame. The connecting rib is provided at least at the end of the fixed edge and / or at the root position near the bent part.

2. The plastic corner bracket according to claim 1, characterized in that, The thickness of the connecting rib is less than the thickness of the main frame of the fixed side.

3. The plastic corner bracket according to claim 1, characterized in that, The connecting rib has a hollow cavity in the middle.

4. The plastic corner bracket according to claim 1, characterized in that, The main frame on the inner and outer sides of the fixed edge extends and contracts to the end of the main frame, forming an acute angle structure.

5. The plastic corner bracket according to claim 1, characterized in that, The side of the fixed edge has a chamfered structure.

6. The plastic corner bracket according to claim 1, characterized in that, The fixed edge end face is rounded at the end of the main frame.

7. The plastic corner bracket according to claim 1, characterized in that, On the inner side of the fixed edge, there is a recess on the main frame, and the recess is equipped with a corner bracket buckle. The top of the corner bracket buckle is 0.1~0.5mm higher than the plane of the main frame.

8. The plastic corner bracket according to claim 1, characterized in that, The inner angle of the bending section is 90°, and its projection in the side direction is a right angle, meaning there is no notch or open structure.

9. A plastic corner bracket and a photovoltaic module, characterized in that, Includes the plastic corner brackets as described in any one of claims 1 to 8.

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