Steel corner connector for high-adaptability photovoltaic frame

Abstract

The utility model relates to a high-adaptability steel corner connector for a photovoltaic frame, the steel corner connector is composed of two corner connector edges which are perpendicular to each other, the middle part of each corner connector edge is provided with a protruding part which is formed by bending inwards, and the outer end of each corner connector edge is provided with a rebounding part. The springback part comprises a first folding edge formed by inwards bending the free end of the outer side of the corner brace edge, a second folding edge formed by inwards bending the free end of the first folding edge, and a third folding edge formed by inwards bending the free end of the second folding edge; the vertical distance between the connecting point of the corner connector edge and the first folding edge and the connecting point of the second folding edge and the third folding edge is consistent with the distance between the inner wall face of the outer side of the frame and a rectangular hole formed in the inner wall face of the inner side of the frame and used for installing the corner connector. According to the utility model, the protruding part is arranged on the corner connector edge, so that the friction damage generated between the corner connector edge and the inner side surface of the frame can be reduced, the rebounding part can realize the rapid installation and locking of the steel corner connector, and the high-strength and stable matching connection between the steel corner connector and the photovoltaic frame is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaic, in particular to a steel corner code for a photovoltaic frame with high adaptability. Background Art

[0002] The initial photovoltaic frames were mainly made of aluminum profiles. Due to the excellent electrical conductivity and high strength of steel profiles, frames made of steel profiles emerged. Because steel profiles have better electrical conductivity than aluminum profiles, additional grounding is not required after installation. However, most of the current corner codes suitable for steel profile frames are aluminum corner codes, which have problems such as insufficient adaptability of material properties and insufficient ability to withstand mechanical loads. Therefore, it is necessary to design and develop a corner code for steel profiles to make it more widely used in photovoltaic modules.

[0003] For the structure of the existing steel corner codes, both of the two mutually perpendicular corner code sides are straight. When connecting the long and short frames with the steel corner codes, the straight corner code sides not only have low strength but also are prone to direct contact friction on the inner side of the frame after installation; the insertion end of the corner code that fits with the rectangular hole opened on the inner side of the frame adopts a straight hook structure, and its locking strength is insufficient, and it is easy to slip out, resulting in the collapse of the photovoltaic frame.

[0004] In addition, the existing steel corner codes also have problems of excessive strength and rigidity, which easily lead to inconsistent internal performance of the product after the frames are assembled into photovoltaic modules and cannot fully reflect the advantages of their high load performance. Summary of the Utility Model

[0005] The technical problem to be solved by the utility model is: in order to overcome the deficiencies in the prior art, the utility model provides a steel corner code for a photovoltaic frame with high adaptability, which is convenient for installation, is beneficial to improving the frame installation efficiency, and has a high mechanical load bearing capacity.

[0006] The technical solution adopted by the utility model to solve its technical problems is: a steel corner code for a photovoltaic frame with high adaptability, the steel corner code is composed of two mutually perpendicular corner code sides, a convex portion formed by inward bending is arranged in the middle of the corner code side, a spring-back portion is arranged at the outer end of the corner code side, and the spring-back portion includes a first folded edge formed by inward bending from the free end on the outer side of the corner code side, a second folded edge formed by inward bending from the free end of the first folded edge, and a third folded edge formed by inward bending from the free end of the second folded edge; the vertical distance between the connection point between the corner code side and the first folded edge and the connection point between the second folded edge and the third folded edge is the same as the distance between the outer inner wall surface of the frame and the rectangular hole for installing the corner code on the inner inner wall surface of the frame.

[0007] Furthermore, inverted grooves formed by covering a layer of polymer film layer are arranged on the outer side surfaces of the corner code sides on both sides of the convex portion and the outer side surface of the third folded edge, so as to improve the locking ability of the steel corner code.

[0008] Preferably, for better shrinkage framing and anti-slip, the included angle between the third folded edge and the extension line of the second folded edge is 10°.

[0009] Furthermore, the cross-sectional shape of the convex portion is trapezoidal.

[0010] The beneficial effects of the present utility model are as follows: By providing a convex portion on the corner code edge, the present utility model can reduce the frictional damage generated between the corner code edge and the inner side surface of the frame. The rebounding portion can achieve rapid installation and locking of the steel corner code, ensuring a high-strength and stable fitting connection between the steel corner code and the photovoltaic frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The present utility model will be further described below in conjunction with the drawings and embodiments.

[0012] Figure 1 is a schematic structural view of the present utility model.

[0013] Figure 2 is Figure 1 an enlarged structural view of part A in

[0014] Figure 3 is a schematic installation structure view of the steel corner code and the frame.

[0015] Figure 4 is a schematic cross-sectional view after the installation of the steel corner code and the frame.

[0016] In the figure: 1. Corner code edge, 2. Convex portion, 3. Rebounding portion, 3-1. First folded edge, 3-2. Second folded edge, 3-3. Third folded edge, 4. Inverted groove, 5. Frame. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] The present utility model will now be described in further detail with reference to the drawings. These drawings are all simplified schematic views, only illustrating the basic structure of the present utility model in a schematic manner, so they only show the components related to the present utility model.

[0018] As Figures 1 to 4 shown, a steel corner code for a highly adaptable photovoltaic frame is composed of two corner code edges 1 with the same structure. The ends of the two corner code edges 1 are joined together, perpendicular to each other, and integrally formed.

[0019] The middle of the corner code edge 1 has a convex portion 2 formed by inward bending with a trapezoidal cross-sectional shape. By providing the structure of the convex portion 2, compared with the installation of the straight structure of the conventional steel corner code, not only can the strength of the corner code be increased, but also the rebounding performance of the corner code can be improved. More importantly, the contact area between the corner code edge 1 and the inner side surface of the frame 5 can be reduced, effectively preventing frictional damage to the frame 5.

[0020] The outer end of the angle code side 1 has a resilient portion 3. The resilient portion 3 includes a first folded edge 3-1, a second folded edge 3-2, and a third folded edge 3-3. The first folded edge 3-1 is bent inward from the free end on the outer side of the angle code side 1. The second folded edge 3-2 is bent inward from the free end of the first folded edge 3-1. The third folded edge 3-3 is bent inward from the free end of the second folded edge 3-2. The included angle between the third folded edge 3-3 and the extension line of the second folded edge 3-2 is 10°, so as to form a state of the angle code being shrink-fitted into the frame within the frame 5 and prevent it from slipping out. The third folded edge 3-3 is tightly clamped in cooperation with a rectangular hole formed on the inner wall surface of the frame 5.

[0021] The vertical distance H between the connection point between the angle code side 1 and the first folded edge 3-1 and the connection point between the second folded edge 3-2 and the third folded edge 3-3 is the same as the distance between the outer wall surface of the frame 5 and the rectangular hole for installing the angle code on the inner wall surface of the frame 5, ensuring the effective clamping between the third folded edge 3-3 and the rectangular hole on the frame 5.

[0022] On the outer side surfaces of the angle code sides 1 on both sides of the convex portion 2 and the outer side surface of the third folded edge 3-3, there are reverse grooves 4 formed by covering a layer of polymer film layer. During the installation of the frame 5, the reverse grooves 4 can make the angle code better clamp the frame 5.

[0023] One end of an angle code side 1 of the steel angle code is clamped into the short frame. Through cooperation with the reinforcing rib structure in the short frame, the vertical fixation of the steel angle code is achieved. It is shrunk and clamped into the inner wall groove of the short frame through the resilient portion 3, and then through cooperation with the rectangular hole in the short frame, the locking between the steel angle code and the short frame is further achieved. After completing the connection between the steel angle code and the short frame, the steel angle code is then connected to the long frame, and finally, the high-strength and stable cooperation between the steel angle code and the photovoltaic frame is achieved.

[0024] Inspired by the ideal embodiments of the present invention described above, through the above description, relevant staff can completely make various changes and modifications within the scope not deviating from the technical idea of this invention. The technical scope of this invention is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A highly adaptable steel angle code for photovoltaic frames, characterized by: The steel angle bracket is composed of two mutually perpendicular angle bracket edges (1), the middle part of the angle bracket edge (1) has a protruding portion (2) formed by bending inwards, and the outer end of the angle bracket edge (1) is provided with a springback portion (3), and the springback portion (3) includes a first folded edge (3-1) formed by bending inwards from the outer free end of the angle bracket edge (1), a second folded edge (3-2) formed by bending inwards from the free end of the first folded edge (3-1), and a third folded edge (3-3) formed by bending inwards from the free end of the second folded edge (3-2); The vertical distance (H) between the connecting point between the corner code edge (1) and the first folded edge (3-1) and the connecting point between the second folded edge (3-2) and the third folded edge (3-3) is consistent with the distance between the outer inner wall surface of the frame (5) and the rectangular hole for installing the corner code opened on the inner inner wall surface of the frame (5).

2. The steel angle code for the highly adaptable photovoltaic frame according to claim 1 is characterized in that: The outer side surfaces of the corner edges (1) and the outer side surfaces of the third folded edges (3-3) on both sides of the raised portion (2) are provided with inverted grooves (4) formed by covering a layer of polymer film.

3. The steel angle code for the highly adaptable photovoltaic frame according to claim 1 is characterized in that: The angle between the third folded edge (3-3) and the extension line of the second folded edge (3-2) is 10°.

4. The steel angle code for the highly adaptable photovoltaic frame according to claim 1 is characterized in that: The cross-sectional shape of the raised portion (2) is a trapezoid.

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