A photovoltaic frame connection corner code and a photovoltaic frame assembly

Abstract

The present invention relates to a photovoltaic frame connection corner piece and a photovoltaic frame assembly. The photovoltaic frame connection corner piece includes a first corner piece arm, a second corner piece arm, and a groove. The first corner piece arm and the second corner piece arm are perpendicularly connected and form a corner at the connection. The width L2 of the second corner piece arm is greater than the width L1 of the first corner piece arm. The groove is located at the corner and is formed by the depression of the second corner piece arm. The side wall of the groove close to the first corner piece arm is coplanar with the inner surface of the first corner piece arm. By forming a groove at the corner of the corner piece, the present invention facilitates the stacking and packaging of the frame after the corner piece is assembled. The operation is simple, the packaging is firm, it prevents movement or layer shifting during transportation, prevents the frame from being bumped, and improves the packaging protection effect of the frame. In addition, by designing a corner piece with different widths of the corner piece arms, the groove is used to position the first frame, increasing the connection strength of the corner piece and preventing the corner piece from breaking.

Description

Technical Field

[0001] The present invention relates to the field of photovoltaic frame, and more specifically, to a connecting corner fitting for a photovoltaic frame and a photovoltaic frame assembly. Background Art

[0002] The corner fitting is an important component at the corner connection of the photovoltaic frame. When assembling the photovoltaic frame assembly, the corner fittings are respectively inserted into the cavities of two adjacent frames. An interference fit is formed between the corner fitting and the protrusions in the cavities of the frames, so as to tightly assemble and connect the frames together, realizing functions such as encapsulation, fastening, and load-bearing of the frames, to ensure the service life and strength requirements of the photovoltaic frame assembly.

[0003] In the prior art, the widths of the two corner arms of the corner fitting are usually the same. When stacking and packaging frames of the same length with corner fittings, the stability of stacking and packaging is poor, and it is easy to move during transportation, resulting in bumps, reducing the quality of the frames. Summary of the Invention

[0004] To solve the above technical problems, in a first aspect of the present invention, a connecting corner fitting for a photovoltaic frame is provided. The connecting corner fitting for a photovoltaic frame includes a first corner arm, a second corner arm, and a groove.

[0005] The first corner arm and the second corner arm are perpendicularly connected and form a corner at the connection. The width of the second corner arm is greater than the width of the first corner arm.

[0006] The groove is located at the corner. The groove is formed by the depression of the second corner arm. The side wall of the groove close to the first corner arm is coplanar with the inner side surface of the first corner arm.

[0007] By forming a groove at the corner of the corner fitting in the present invention, it is convenient for stacking and packaging the frames after assembling the corner fittings. The operation is simple, the packaging is firm, preventing movement or layer shifting during transportation, preventing the frames from being bumped, improving the packaging protection effect of the frames. In addition, a corner fitting with different widths of corner arms is designed, and the groove is used to position the first frame, increasing the connection strength of the corner fitting and preventing the corner fitting from breaking.

[0008] Further, a positioning protrusion is provided on the second corner arm.

[0009] By providing the groove and the positioning protrusion in the present invention, separate positioning and limiting of the first frame and the second frame are realized, improving the positioning accuracy, preventing interference at the connection of adjacent first and second frames, preventing the occurrence of defects such as gaps and misalignment at the joint of the first frame and the second frame, reducing the rework process, and lowering the processing cost.

[0010] Furthermore, the difference between the vertical distance L3 from the positioning protrusion to the outer surface of the second corner arm and the width L2 of the second corner arm is between 0.2 mm and 5 mm.

[0011] The present invention ensures the positioning and limiting effects at the end of the second frame by defining the height of the positioning protrusion.

[0012] Furthermore, a first intersection line is formed at the connection between the first corner arm and the groove, and a second intersection line is formed at the connection between the second corner arm and the positioning protrusion. The included angle ɑ between the plane where the first intersection line and the second intersection line are located and the outer surface of the second corner arm is between 10° and 85°.

[0013] Furthermore, the difference between the width L4 of the groove and the width L1 of the first corner arm is greater than or equal to 1.2 mm.

[0014] By defining that the difference between the width of the groove and the width of the first corner arm is greater than 1.2 mm, on the one hand, it is convenient for users to take out the first corner arm embedded in the corner arm groove, and on the other hand, an assembly allowance is reserved, which is convenient for the assembly and disassembly of the first frame and the first corner arm.

[0015] Furthermore, self-locking protrusions are provided on the inner surfaces of both the first corner arm and the second corner arm.

[0016] By providing self-locking protrusions on the inner surfaces of the first corner arm and the second corner arm, the present invention enhances the anti-slip effect of the corner arm and the installation stability of the frame.

[0017] Furthermore, the material of the photovoltaic frame connection corner arm is aluminum alloy or high molecular plastic.

[0018] The second aspect of the present invention provides a photovoltaic frame assembly, including two first frames, two second frames and four of the above-mentioned photovoltaic frame connection corner arms. The adjacent first frame and second frame are both connected through the photovoltaic frame connection corner arm;

[0019] A first cavity is provided on the first frame, and a second cavity is provided on the second frame. The width D1 of the first cavity is smaller than the width D2 of the second cavity. The first cavity is matched with the first corner arm, and the second cavity is matched with the second corner arm.

[0020] Furthermore, the end faces of both the first frame and the second frame are inclined at 45°.

[0021] Furthermore, the absolute value of the difference between the sum of the wall thickness t2 of the outer sidewall of the second cavity and the width D2 of the second cavity and the sum of the wall thickness t1 of the outer sidewall of the first cavity and the distance L5 from the outer side surface of the first corner arm to the end of the positioning protrusion away from the first corner arm satisfies: |(t2 + D2) - (t1 + L5)| ≤ 0.5 mm.

[0022] By defining the relationship among the wall thickness of the outer sidewall of the second cavity, the width of the second cavity, the wall thickness of the outer sidewall of the first cavity, and the distance from the outer side surface of the first corner arm to the end of the positioning protrusion away from the first corner arm, the present invention ensures that the assembled frame assembly meets the industry requirements and improves the assembly qualification rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a schematic diagram in the first direction of the photovoltaic frame connection corner provided by the present invention;

[0024] Figure 2 is a schematic structural diagram of the photovoltaic frame connection corner provided by the present invention;

[0025] Figure 3 is a partial schematic diagram of the use state of the photovoltaic frame connection corner provided by the present invention;

[0026] Figure 4 is a schematic diagram of the packaging of the photovoltaic frame connection corner and the frame provided by the present invention;

[0027] Figure 5 is a schematic diagram of the end face structure of the first frame in the photovoltaic frame assembly provided by the present invention;

[0028] Figure 6 is a schematic diagram of the end face structure of the second frame in the photovoltaic frame assembly provided by the present invention;

[0029] Figure 7 is a schematic structural diagram of the photovoltaic frame assembly provided by the present invention;

[0030] DESCRIPTION OF THE REFERENCE NUMERALS:

[0031] 100 - Photovoltaic frame connection corner; 110 - First corner arm; 120 - Second corner arm; 121 - Positioning protrusion; 122 - Second intersection line; 130 - Groove; 131 - First intersection line; 101 - Self-locking protrusion; 102 - Cavity structure;

[0032] 200 - Photovoltaic frame assembly; 210 - First frame; 211 - First cavity; 220 - Second frame; 221 - Second cavity;

[0033] L1 - Width of the first corner arm;

[0034] L2 - Width of the second corner arm;

[0035] The vertical distance from the upper surface of the L3-positioning protrusion to the outer surface of the second corner arm;

[0036] L4 - The width of the groove;

[0037] L5 - The distance from the outer side surface of the first corner arm to the end of the positioning protrusion far from the outer side surface of the first corner arm;

[0038] ɑ - The angle between the plane where the first intersecting line and the second intersecting line are located and the outer surface of the second corner arm;

[0039] t1 - The wall thickness of the outer side wall of the first cavity;

[0040] t2 - The wall thickness of the outer side wall of the second cavity;

[0041] D1 - The width of the first cavity;

[0042] D2 - The width of the second cavity; Detailed implementation manners

[0043] To make the above objects, features, and advantages of the present invention more obvious and understandable, the following combines the appended Figure 1-7 to make a detailed description of the specific embodiments of the present invention.

[0044] In the present invention, the terms "inner", "outer", "upper", "lower", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0045] Referring to the appended Figure 1 , a first aspect of the present invention provides a photovoltaic frame connection corner code 100. The photovoltaic frame connection corner code 100 includes a first corner arm 110, a second corner arm 120, and a groove 130. The first corner arm 110 and the second corner arm 120 are vertically connected and form a corner at the connection. The width L2 of the second corner arm 120 is greater than the width L1 of the first corner arm 110;

[0046] The groove 130 is located at the corner. The groove 130 is formed by the depression of the second corner arm 120. The side wall of the groove 130 close to the first corner arm 110 is coplanar with the inner side surface of the first corner arm 110.

[0047] In one implementation manner, referring to the appended Figure 3The first corner code arm 110 is used to connect the first frame 210, the second corner code arm 120 is used to connect the second frame 220, the second frame 220 is adjacent to the first frame 210, the groove 130 is used to limit the end of the first frame 210, and the end of the second frame 220 abuts against the end of the first frame 210 to achieve the positioning of the second frame 220.

[0048] It should be noted that, see Appendix Figure 4 Since the second frame 220 and the second corner code arm 120 are usually assembled together in advance, and the first corner code arm 110 is on the outside, when packaging, the two second frames 220 are stacked relative to each other, and one of the first corner code arms 110 is embedded in the groove 130 of the other photovoltaic frame connecting the corner code 100, the stability of the packaging stacking can be improved, the overall packaging is reliable, and the second frame 220 is not prone to layer movement during transportation, thereby improving the protective effect of the packaging and avoiding transportation bumps that affect the quality of the frame.

[0049] Therefore, this embodiment forms a groove 130 at the corner of the corner code, which facilitates the stacking and packaging of the frame after the corner code is assembled. The operation is simple and the packaging is secure, which can prevent movement or layer shifting during transportation and the frame from being bumped, thereby improving the packaging protection effect of the frame. In addition, corner codes with different corner code arm widths are designed, and the groove 130 is used to position the first frame, thereby increasing the connection strength of the corner code and preventing the corner code from breaking.

[0050] Preferably, see Appendix Figure 1-3 A positioning protrusion 121 is provided on the second corner code arm 120 , and the positioning protrusion 121 is used to limit the end surface of the second frame 220 .

[0051] In one embodiment, the side wall of the positioning protrusion 121 is coplanar with the side wall of the groove 130 away from the first corner code arm 110 , and the positioning protrusion 121 is used to limit the end of the second frame 220 .

[0052] It should be noted that the positioning protrusion 121 is formed to protrude upward along the inner surface of the second angle code arm 120 .

[0053] Therefore, this embodiment realizes the respective positioning and limiting of the first frame 210 and the second frame 220 by setting the groove 130 and the positioning protrusion 121, thereby improving the positioning accuracy, preventing interference at the connection between the adjacent first frame 210 and the second frame 220, preventing the occurrence of gaps, misalignment and other undesirable phenomena at the joints of the first frame 210 and the second frame 220, reducing rework processes, and reducing processing costs.

[0054] See attached Figure 1, the difference between the vertical distance L3 from the positioning protrusion 121 to the outer surface of the second corner arm 120 and the width L2 of the second corner arm 120 is between 0.2 mm and 5 mm.

[0055] Therefore, in this embodiment, by limiting the height of the positioning protrusion 121, the positioning and limiting effects at the end of the second frame 220 are ensured.

[0056] See the appendix Figure 1 and 2 , a first intersection line 131 is formed at the connection between the first corner arm 110 and the groove 130, and a second intersection line 122 is formed at the connection between the second corner arm 120 and the positioning protrusion 121. The included angle ɑ between the plane where the first intersection line 131 and the second intersection line 122 are located and the outer surface of the second corner arm 120 is between 10° and 85°.

[0057] It should be noted that generally, the adjacent first frame 210 and the second frame 220 are connected by the photovoltaic frame connection corner code 100. The end faces of the first frame 210 and the second frame 220 are inclined. The included angle between the end face of the first frame 210 and the side wall of the first frame 220 is complementary to the included angle between the end face of the first frame 210 and the side wall of the second frame 220.

[0058] Therefore, in this embodiment, by limiting that the included angle ɑ between the plane where the first intersection line 131 and the second intersection line 122 are located and the outer surface of the second corner arm 120 is not fixed, the included angle ɑ can be designed based on the inclination angles of the end faces of the first frame 210 and the second frame 220, and the applicability is strong.

[0059] Preferably, the included angle ɑ between the plane where the first intersection line 131 and the second intersection line 122 are located and the outer surface of the second corner arm 120 is 45°, that is, the end faces of the corresponding first frame 210 and the second frame 220 are inclined 45° respectively, which is convenient for processing and manufacturing and has a low processing cost.

[0060] See the appendix Figure 1 , the difference between the width L4 of the groove 130 and the width L1 of the first corner arm 110 is greater than or equal to 1.2 mm.

[0061] Since the minimum wall thickness of the first cavity 211 of the first frame 210 is 1 mm and an assembly allowance is reserved, therefore, the difference between the width of the groove 130 and the width of the first corner arm 110 is limited to be greater than a certain value.

[0062] Therefore, in this embodiment, by limiting that the difference between the width of the groove 130 and the width of the first corner arm 110 is greater than 1.2 mm, on the one hand, it is convenient for the user to take out the first corner arm 110 embedded in the corner code groove 130, and on the other hand, an assembly allowance is reserved, which is convenient for the assembly and disassembly of the first frame 210 and the first corner arm 110.

[0063] Preferably, referring to the appendix Figure 2 , self-locking protrusions 101 are provided on the inner surfaces of both the first corner code arm 110 and the second corner code arm 120.

[0064] Therefore, in this embodiment, by providing the self-locking protrusions 101 on the inner surfaces of the first corner code arm 110 and the second corner code arm 120, the anti-slip effect of the corner code is enhanced, and the installation stability of the frame is enhanced.

[0065] Preferably, the material of the photovoltaic frame connecting corner code 100 is aluminum alloy or high molecular plastic material.

[0066] Preferably, the photovoltaic frame connecting corner code 100 is integrally formed.

[0067] Therefore, in this embodiment, by making the corner code an integrally formed structure, it is convenient to manufacture and has low cost.

[0068] Preferably, referring to the appendix Figure 2 , cavity structures 102 are provided on both the first corner code arm 110 and the second corner code arm 120.

[0069] Therefore, in this embodiment, by providing the cavity structures 102 on the first corner code arm 110 and the second corner code arm 120, the strength of the corner code is improved.

[0070] Referring to the appendix Figure 5-7 , a second aspect of the present invention provides a photovoltaic frame assembly 200, including two first frames 210, two second frames 220 and four photovoltaic frame connecting corner codes 100. Adjacent first frames 210 and second frames 220 are connected by the photovoltaic frame connecting corner codes 100;

[0071] A first cavity 211 is provided on the first frame 210, a second cavity 221 is provided on the second frame 220. The width D1 of the first cavity 211 is smaller than the width D2 of the second cavity 221. The first cavity 211 cooperates with the first corner code arm 110, and the second cavity 221 cooperates with the second corner code arm 120.

[0072] Preferably, the end surfaces of the first frame 210 and the second frame 220 are both inclined at 45°.

[0073] Preferably, referring to the appendix Figure 3 , when the end surfaces of the first frame 210 and the second frame 220 are both inclined at 45°, the absolute value of the difference between the sum of the wall thickness t2 of the outer side wall of the second cavity 221 and the width D2 of the second cavity 221 and the sum of the wall thickness t1 of the outer side wall of the first cavity 211 and the distance L5 from the outer side surface of the first corner code arm 110 to the end of the positioning protrusion 121 away from the first corner code arm 110 satisfies: δ = |(t2 + D2) - (t1 + L5)| ≤ 0.5 mm.

[0074] It should be noted that according to the industry design requirements, after the first frame 210, the second frame 220 and the corner fitting are assembled together, the offset dimension between the outer side wall of the first frame 210 and the outer side wall of the second frame 220 is less than or equal to 0.5 mm.

[0075] Therefore, in this embodiment, by defining the relationship among the wall thickness of the outer side wall of the second cavity 221, the width of the second cavity 221, the wall thickness of the outer side wall of the first cavity 211, and the distance from the outer side surface of the first corner fitting arm 110 to the end of the positioning protrusion 121 far from the first corner fitting arm 110, it is ensured that the assembled frame assembly meets the industry requirements and the assembly qualification rate is improved.

[0076] Although the present invention is disclosed as above, the present invention is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention should be subject to the scope defined by the claims.

Claims

1. A photovoltaic frame connection corner code, characterized in that, The photovoltaic frame connecting corner code (100) includes a first corner code arm (110), a second corner code arm (120), and a groove (130); The first corner code arm (110) and the second corner code arm (120) are vertically connected and form a corner at the connection, and the width L2 of the second corner code arm is greater than the width L1 of the first corner code arm; The groove (130) is located at the corner, and the groove (130) is formed by the depression of the second corner code arm (120). The side wall of the groove (130) close to the first corner code arm (110) is coplanar with the inner surface of the first corner code arm (110); The second corner code arm (120) is used to connect the second frame (220); During packaging, the second frame (220) and the second corner code arm (120) are assembled together. Two of the second frames (220) are stacked opposite to each other, and one of the first corner code arms (110) is embedded in the groove (130) of the other photovoltaic frame connecting corner code (100).

2. The photovoltaic frame connecting corner code according to claim 1, characterized in that A positioning protrusion (121) is provided on the second corner code arm (120).

3. The photovoltaic frame connection corner code according to claim 2, characterized in that, The vertical distance L3 from the positioning protrusion (121) to the outer surface of the second corner code arm (120) and the width L2 of the second corner code arm (120) differ by between 0.2 mm and 5 mm.

4. The photovoltaic frame connecting corner code according to claim 2, characterized in that, The first corner code arm (110) and the groove (130) form a first intersection line (131) at the connection, and the second corner code arm (120) and the positioning protrusion (121) form a second intersection line (122) at the connection. The angle ɑ between the plane where the first intersection line (131) and the second intersection line (122) are located and the outer surface of the second corner code arm (120) is between 10° and 85°.

5. The photovoltaic frame connection corner code according to claim 1, characterized in that, The difference between the width L4 of the groove (130) and the width L1 of the first corner code arm (110) is greater than or equal to 1.2 mm.

6. The photovoltaic frame connection corner code according to claim 1, characterized in that, Self-locking protrusions (101) are provided on the inner surfaces of both the first corner code arm (110) and the second corner code arm (120).

7. The photovoltaic frame connection corner code according to claim 1, wherein, The material of the photovoltaic frame connecting corner code (100) is aluminum alloy or high molecular plastic.

8. A photovoltaic frame assembly, characterized in that, It includes two first frames (210), two second frames (220), and four photovoltaic frame connecting corner codes (100) according to any one of claims 1-7. The adjacent first frame (210) and the second frame (220) are both connected by the photovoltaic frame connecting corner code (100); A first cavity (211) is provided on the first frame (210), and a second cavity (221) is provided on the second frame (220). The width D1 of the first cavity (211) is smaller than the width D2 of the second cavity (221). The first cavity (211) cooperates with the first corner code arm (110), and the second cavity (221) cooperates with the second corner code arm (120).

9. The photovoltaic frame assembly according to claim 8, wherein, The end faces of both the first frame (210) and the second frame (220) are inclined at 45°.

10. The photovoltaic frame assembly according to claim 9, wherein, The absolute value of the difference between the sum of the wall thickness t2 of the outer side wall of the second cavity (221) and the width D2 of the second cavity (221) and the sum of the wall thickness t1 of the outer side wall of the first cavity (211) and the distance L5 from the outer side surface of the first corner arm (110) to the end of the positioning protrusion (121) away from the first corner arm (110) satisfies: δ = |(t2 + D2) - (t1 + L5)| ≤ 0.5 mm.

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