Corner connector of combined photovoltaic frame

Abstract

A corner connector of a combined photovoltaic frame comprises an inner side plate and an outer side plate which are spaced from each other and connected with each other through a plurality of connecting beam columns, and each connecting beam column comprises a connecting body and dovetail blocks formed at the two ends of the connecting body respectively; the inner side plate comprises a supporting wall I and a supporting wall II which are connected or continuous with each other, the outer side plate comprises a supporting wall III and a supporting wall IV which are connected or continuous with each other, and clamping teeth are respectively formed on the assembling surfaces, jointed with the photovoltaic frame cavity, of the supporting wall I and the supporting wall II; a plurality of dovetail grooves corresponding to the dovetail blocks are formed in the opposite plate wall surfaces of the inner side plate and the outer side plate respectively. And for small-batch orders, the overall thickness of the corner connector can be correspondingly controlled by replacing the middle connecting beam column, so that the assembling requirements of various photovoltaic frames are met, the replacement is convenient, and the cost is saved. In addition, each connecting beam column is of a non-cavity small piece structure, production can be achieved through a flat die, and the die cost is low.

Description

Technical Field

[0001] This utility model relates to photovoltaic equipment technology, specifically to a corner bracket for a combined photovoltaic frame. Background Technology

[0002] Currently, commercially available photovoltaic frames are largely similar, especially the corresponding corner brackets for connection, which have very little difference. Only slight variations in the size of the frame cavity and the thickness of the photovoltaic panel require the creation of new molds each time, resulting in huge costs and increased expenses. Utility Model Content

[0003] To address the aforementioned problems, the purpose of this utility model is to provide a corner bracket for a combined photovoltaic frame.

[0004] According to this utility model, a corner bracket for a combined photovoltaic frame is provided, comprising: an inner side plate and an outer side plate spaced apart from each other and connected to each other via multiple connecting beams and columns, wherein the connecting beams and columns include: a connecting body and dovetail blocks formed at both ends of the connecting body; the inner side plate includes support wall I and support wall II connected or continuous to each other, and the outer side plate includes support wall III and support wall IV connected or continuous to each other; on the mounting surfaces of support wall I and support wall II that engage with the photovoltaic frame cavity, locking teeth are formed respectively; on the plate wall surfaces of the inner side plate and the outer side plate that are opposite to each other, multiple dovetail grooves are respectively formed corresponding to the dovetail blocks.

[0005] Preferably, each tooth on support wall I and support wall II has two sides, one side of which is perpendicular to the assembly surface and the other side is at an angle to the assembly surface.

[0006] Preferably, a circular arc inclined end face I is formed on the free end side of support wall I and support wall II, and a circular arc inclined end face II is formed on the free end side of support wall III and support wall IV.

[0007] Preferably, the outer slope of the circular arc inclined end face II is greater than the outer slope of the circular arc inclined end face I.

[0008] Preferably, support wall I and support wall III are parallel to each other, and support wall II and support wall IV are parallel to each other.

[0009] Preferably, the connecting body between support wall I and support wall III is perpendicular to support wall I and support wall III, respectively.

[0010] Preferably, the connecting beams and columns are formed into long strip-shaped plates.

[0011] Preferably, the connecting beams and columns are formed as a single plate with a longitudinal length consistent with the width of the inner and outer side plates.

[0012] Preferably, the connecting beam-column segments are formed to have a total length consistent with the width of the inner and outer side plates.

[0013] Preferably, both the inner and outer side plates are configured with an L-shaped cross-section.

[0014] According to this invention, for small-batch orders, the overall thickness of the corner brackets can be controlled by replacing the intermediate connecting beams, thus adapting to the assembly needs of various photovoltaic frames. This method is convenient and cost-effective. Furthermore, each connecting beam is a non-cavity small component structure, which can be produced using a flat mold, resulting in low mold costs. Attached Figure Description

[0015] To make the objectives, technical solutions, and advantages of this utility model clearer, the following will provide a further detailed description of this utility model in conjunction with the accompanying drawings.

[0016] Figure 1 A cross-sectional view of a corner bracket of a combined photovoltaic frame. Detailed Implementation

[0017] The exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. The exemplary embodiments described below and illustrated in the drawings are intended to teach the principles of the present invention, enabling those skilled in the art to implement and use the present invention in various environments and for various applications. Therefore, the scope of protection of the present invention is defined by the appended claims, and the exemplary embodiments are not intended, and should not be considered, a limiting description of the scope of protection of the present invention. Furthermore, for ease of description, the dimensions of the various parts shown in the drawings are not necessarily drawn to actual scale. Orientation descriptions, such as up, down, left, right, top, bottom, etc., are based on the orientation or positional relationships shown in the drawings and are only for the convenience of describing the present invention and 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, and therefore should not be construed as a limitation of the present invention. Throughout the drawings, the same elements are represented by the same or similar reference numerals. Conventional structures or partial structures will be omitted where they may cause confusion or make the understanding of the present disclosure difficult to observe. Unless otherwise specifically stated, the order and numerical values ​​of the components and assembly steps described in the embodiments do not limit the scope of this invention.

[0018] This utility model provides a corner bracket for a combined photovoltaic frame, such as... Figure 1 As shown, it includes: an L-shaped inner side plate forming the interference support surface I10, an L-shaped outer side plate forming the interference support surface II20, and a connecting beam / column 30. The three are connected to form an L-shaped corner bracket. By using the interference fit of the two ends of the L-shape into the cavity of the corresponding photovoltaic frame, it can be spliced ​​and assembled to form, for example, a rectangular photovoltaic frame for fixing the corresponding photovoltaic panel.

[0019] The inner side plate includes: support wall I11, support wall II12, locking teeth 13, dovetail groove I14, and arc-shaped inclined end face I40.

[0020] The outer side plate includes: support wall Ⅲ21, support wall Ⅳ22, dovetail groove Ⅱ23, and arc-shaped inclined end face Ⅱ41.

[0021] The connecting beam and column 30 includes: preferably a solid connecting body 31 and dovetail blocks 32 formed at both ends of the connecting body 31.

[0022] The inner side plate's support walls I11 and II12 are perpendicularly connected or continuous at the L-shaped corners, and may have the same width. On the assembly surfaces of support walls I11 and II12 that are to be joined with the frame cavity, symmetrical retaining teeth 13 may be formed relative to the corners. Each retaining tooth 13 has two faces; taking the retaining tooth 13 connected to support wall I11 as an example, one side of the left face is perpendicular to the surface of support wall I11, and the other side of the right face is inclined at a 45° angle to the surface of support wall I11. Arc-shaped beveled end faces I40 are formed on the free ends of support walls I11 and II12 to facilitate insertion operations.

[0023] The outer side plate's support wall Ⅲ21 and support wall Ⅳ22 are perpendicular to each other and continuously connected to form an integral structure. Arc-shaped beveled end faces Ⅱ41 are formed on the free ends of support wall Ⅲ21 and support wall Ⅳ22 respectively to facilitate insertion operations.

[0024] Such interference-fit surfaces I10, II20, and connecting beams / columns 30 can be formed by hot extrusion of aluminum alloy. The length of the connecting beams / columns 30 can be determined according to actual needs. Non-interference-fit surfaces can be formed in local areas such as the arc-shaped inclined end face I40 and arc-shaped inclined end face II41 on the free end side, as well as the corner on the opposite side.

[0025] On the opposing surfaces of the inner and outer side panels, which are spaced apart from each other, multiple dovetail grooves (see dovetail groove I 14 and dovetail groove II 23) are respectively formed to connect with the dovetail blocks 32 on both ends of the connecting beam and column 30, forming corner brackets for the combined photovoltaic frame, so that support wall I 11 and support wall III 21 are parallel to each other, and support wall II 12 and support wall IV 22 are parallel to each other. The connecting body 31 is perpendicular to support wall I 11 and support wall III 21 respectively.

[0026] Specifically, when assembling the corner brackets, the dovetail blocks 32 connecting the beams and columns 30 are inserted into the corresponding dovetail grooves I14 and II23 respectively.

[0027] Since the curved end face I40 and the curved end face II41 are located at the very end of the corner bracket, they are convenient to be inserted into the cavity of the photovoltaic frame during assembly.

[0028] Benefits: For small-batch orders, the thickness of the corner brackets can be controlled by replacing the middle connecting beam 30, thus adapting to the assembly needs of various photovoltaic frames, making replacement convenient and saving costs.

[0029] <Example>

[0030] The interference fit surface I10, interference fit surface II20, and connecting beam / column 30 are made of 6063 aluminum alloy, with a composition conforming to national standards. They are produced using hot forward extrusion. Figure 1 The structure shown includes interference support surface I10, interference support surface II20, and connecting beam-column 30.

[0031] Key extrusion processes: casting temperature 470-490℃, extrusion ratio 40-60, extrusion bar speed 4-7mm / s, outlet temperature 520-535℃, and strong air cooling.

[0032] After the interference-fitted support surface I10, interference-fitted support surface II20, non-interference-fitted support surface, and connecting beam / column 30 are extruded, they are cut into 6000 (0, +10) mm lengths and framed. Artificial aging is then performed at 165-170℃ for 8-10 hours.

[0033] Example of size specification:

[0034] Support wall I11 has a wall thickness of 2 (±0.13) mm and a width of 30 (±0.2) mm.

[0035] Support wall II12 has a wall thickness of 2 (±0.13) mm and a width of 30 (±0.2) mm.

[0036] The height of the 13th tooth is 0.3 (±0.01) mm.

[0037] The dovetail groove I14 and the dovetail groove II23 have the same dimensions and are trapezoidal, with an upper base of 1.8 (-0.02, +0) mm, a lower base of 1 (-0.02, +0) mm, and a height of 0.6 (-0.02, +0) mm.

[0038] Support wall Ⅲ21 has the same dimensions as support wall Ⅳ22, with a thickness of 1.5 (±0.13) mm and a width of 40 (±0.2) mm.

[0039] The dovetail block 32 is trapezoidal, with an upper base of 1 (0, +0.02) mm, a lower base of 1.8 (0, +0.02) mm, and a height of 0.6 (0, +0.02) mm.

[0040] The purpose of the curved ends (curved end face I 40, curved end face II 41) is to facilitate the insertion of the photovoltaic cavity. Preferably, the outer slope of the curved end face II 41 is greater than the outer slope of the curved end face I 40.

[0041] Then, the interference fit surface I10, interference fit surface II20, and connecting beam and column 30 are cut into small parts of equal width, 25-30mm. Each connecting beam and column 30 is cooled with liquid nitrogen for 5-10 minutes, and the dovetail block 32 of the connecting beam and column 30 is inserted into the dovetail groove I14 and dovetail groove II23 of the interference fit surface I10 and interference fit surface II20.

[0042] Insert the assembled corner bracket into the cavity of the photovoltaic frame, and then punch the interference point to achieve an interference fit with the photovoltaic frame.

[0043] If the corner bracket thickness needs adjustment, the connecting beam 30 can be replaced accordingly. If only a few are needed and there are no further orders, the required connecting beam 30 can be milled from appropriately sized aluminum blocks using a CNC machining center, followed by solution treatment at 510-530℃ for 1.5-2 hours and artificial aging heat treatment at 165-170℃ for 8-10 hours. Then, repeat the above steps.

[0044] Furthermore, the connecting beam-column 30 is preferably formed as a long strip plate. It can be formed as a single piece with a longitudinal length consistent with the width of the inner and outer plates (i.e., the width of each segment after longitudinal cutting), or it can be segmented into sections with a total length consistent with the width of the inner and outer plates, so that after assembly, the sections are adjacent to each other or have appropriate intervals that do not affect the installation strength. In the latter case, it is not necessary to assemble as a whole and then cut as in the above embodiment. Instead, the pre-segmented connecting beam-column 30 can be directly inserted between the inner and outer plates of the corresponding width.

[0045] In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified. Unless otherwise explicitly specified and limited, the terms "installed," "connected," "linked," "fixed," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances. Although the present invention has been described with reference to various specific embodiments, it should be understood that modifications can be made within the spirit and scope of the described inventive concept. Therefore, it is intended that the present invention be limited to the described embodiments but will have the full scope defined by the language of the appended claims.

Claims

1. A corner bracket for a combined photovoltaic frame, characterized in that, include: The inner and outer plates are spaced apart from each other and connected to each other by multiple connecting beams (30), wherein the connecting beams (30) include: a connecting body (31) and dovetail blocks (32) formed at both ends of the connecting body (31); the inner plate includes a support wall I (11) and a support wall II (12) that are connected or continuous to each other, and the outer plate includes a support wall III (21) and a support wall IV (22) that are connected or continuous to each other. On the mounting surfaces of the support wall I (11) and the support wall II (12) that are engaged with the photovoltaic frame cavity, respectively, a locking tooth (13) is formed; on the plate surfaces of the inner and outer plates that are opposite to each other, a plurality of dovetail grooves are respectively opened in correspondence with the dovetail blocks (32).

2. The corner bracket of the combined photovoltaic frame according to claim 1, characterized in that, Each tooth (13) on support wall I (11) and support wall II (12) has two sides, one side of which is perpendicular to the assembly surface and the other side is at an angle to the assembly surface.

3. The corner bracket of the combined photovoltaic frame according to claim 1, characterized in that, On the free end sides of support wall I (11) and support wall II (12), circular arc inclined end face I (40) is formed respectively, and on the free end sides of support wall III (21) and support wall IV (22), circular arc inclined end face II (41) is formed respectively.

4. The corner bracket of the combined photovoltaic frame according to claim 3, characterized in that, The outer slope of the curved end face II (41) is greater than that of the curved end face I (40).

5. The corner bracket of the combined photovoltaic frame according to claim 1, characterized in that, Support wall I (11) and support wall III (21) are parallel to each other, and support wall II (12) and support wall IV (22) are parallel to each other.

6. The corner bracket of the combined photovoltaic frame according to claim 1, characterized in that, The connecting body (31) connecting the support wall I (11) and the support wall III (21) is perpendicular to the support wall I (11) and the support wall III (21) respectively.

7. The corner bracket of the combined photovoltaic frame according to claim 1, characterized in that, The connecting beams and columns (30) are formed into long strips of slabs.

8. The corner bracket of the combined photovoltaic frame according to claim 7, characterized in that, The connecting beams and columns (30) are formed into an integral plate with a longitudinal length consistent with the width of the inner and outer plates.

9. The corner bracket of the combined photovoltaic frame according to claim 7, characterized in that, The connecting beams and columns (30) are segmented into sections with a total length consistent with the width of the inner and outer plates.

10. The corner bracket of the combined photovoltaic frame according to claim 1, characterized in that, Both the inner and outer side plates are L-shaped in cross-section.

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