Solar cell module fixing metal fitting and fixing structure thereof

Abstract

To surely fix a plurality of solar cell modules by a fixing metal fitting, to improve the fixing workability of the solar cell modules, to make a facing gap between the facing solar cell modules a small facing gap corresponding to the plate thickness of a mounting metal fitting and a holding metal fitting, to prevent snow from being filled and accumulated in the facing gap, and to improve the power generation efficiency of the solar cell modules.SOLUTION: A solar cell modules fixing metal fitting comprises a fastening metal fitting HM that can be fixed to a roof surface, a bent plate-shaped mounting metal fitting IM that is mounted on the fixing metal fitting and fixed to a ridge-side edge of a solar cell module S on the opposite eaves side RE, and a bent plate-shaped holding metal fitting RM that is fixed to the eave-side edge of a solar cell module on an opposite ridge side RR and holds the ridge-side edge of the eave-side solar cell module.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a solar cell module fixing bracket and its fixing structure used when fixing a solar cell module to the surface of a metal roof. [Background technology]

[0002] Conventionally, this type of solar cell module fixing bracket and its fixing structure has been known to have a structure consisting of a fastening bracket that can be attached to the roof surface, and a roughly U-shaped fixing bracket that is attached to the fastening bracket with a mounting bolt and can simultaneously press against the upper surface of the ridge side edge of the solar cell module on the opposing eaves side and the upper surface of the eaves side edge of the solar cell module on the opposing ridge side. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 5863879 Summary of the Invention [Problem to be solved by the invention]

[0004] However, in the case of the above-mentioned conventional structure, the fixing bracket is formed in an approximately U-shape so that the opposing solar cell module on the eaves side and the solar cell module on the ridge side can be pressed simultaneously, and this approximately U-shaped fixing bracket is fixed to the fastening bracket with an attachment bolt. Due to this structure, a relatively large opposing gap corresponding to the shape of the approximately U-shaped fixing bracket exists between the opposing solar cell modules, and as a result, when it snows in the winter, snow accumulates in the opposing gap, making it difficult for the snow to slide across the surface of the solar cell module, which in turn increases the snow load on the metal roof and reduces the power generation efficiency of the solar cell module. [Means for solving the problem]

[0005] The present invention aims to solve such inconveniences, and the invention described in claim 1 relates to a solar cell module fixing bracket used when fixing a plurality of solar cell modules in an opposing butt-to-button arrangement to the roof surface of a metal roof in the direction of the roof slope from the eaves side to the ridge side, characterized in that it comprises a fastening bracket that can be fastened to the roof surface, a folded plate-shaped mounting bracket that is attached to the fastening bracket and fixed to the ridge side edge portion of the solar cell module on the opposing eaves side, and a folded plate-shaped holding bracket that is fixed to the eaves side edge portion of the solar cell module on the opposing ridge side and holds the ridge side edge portion of the solar cell module on the eaves side.

[0006] The invention described in claim 2 is characterized in that the metal roof is a horizontal roof and the fastening fittings are provided with a horizontal seam clamping portion capable of clamping the horizontal seam portion of the horizontal roof, and the invention described in claim 3 is characterized in that the metal roof is a vertical roof and the fastening fittings are provided with a vertical seam clamping portion capable of clamping the vertical seam portion of the vertical roof.

[0007] The invention described in claim 4 is characterized in that the folded plate-shaped mounting bracket comprises a pressing piece portion capable of pressing the upper surface of the ridge side edge of the solar cell module on the opposing eaves side, a mounting piece portion fixed to the side surface of the ridge side edge of the solar cell module on the eaves side, and a fixing plate portion fixed to the receiving base portion of the fastening bracket.The invention described in claim 5 is characterized in that the folded plate-shaped retaining bracket comprises a pressing piece portion capable of pressing the upper surface of the eaves side edge of the solar cell module on the opposing ridge side, a mounting piece portion fixed to the side surface of the eaves side edge of the solar cell module on the ridge side, and a retaining piece portion capable of holding the bottom surface of the ridge side edge of the solar cell module on the eaves side.

[0008] The invention described in claim 6 relates to a solar cell module fixing structure, characterized in that the solar cell module fixing bracket described in claim 1 is used, and the multiple solar cell modules are fixed in an opposing butt-jointed arrangement on the roof surface of a metal roof in the direction of the roof slope from the eaves side to the ridge side. Effect of the Invention

[0009] As described above, in the invention according to claims 1 and 6, when a plurality of solar cell modules are fixed to the roof surface of a metal roof, they are arranged facing each other in a butt-to-face manner in sequence from the eaves side to the ridge side along the roof slope direction and fixed by fastening metal fittings, and this fastening metal fitting is composed of a fastening metal fitting that can be fastened to the roof surface, a bent plate-shaped mounting metal fitting that is attached to the fastening metal fitting and fixed to the ridge side edge portion of the solar cell module on the opposing ridge side, and a bent plate-shaped holding metal fitting that is fixed to the eaves side edge portion of the solar cell module on the opposing ridge side and holds the ridge side edge portion of the solar cell module on the eaves side. Therefore, first, the fastening metal fittings that constitute the fastening metal fittings are fastened to the roof surface, the mounting metal fittings are attached to the receiving portions of the fastening metal fittings and fixed to the ridge side edge portion of the solar cell module on the opposing eaves side, and the holding metal fittings are fixed to the eaves side edge portion of the solar cell module on the opposing ridge side and the solar cell module on the eaves side is held by the fastening metal fittings. The mounting brackets and retaining brackets are both formed in a folded plate shape, so that the gap between opposing solar cell modules can be made small, equivalent to the plate thickness of the mounting brackets and retaining brackets. This prevents snow from packing and accumulating in the gap when it snows in the winter, and allows the snow to slide smoothly over the solar cell modules. This prevents an increase in snow load on the metal roof and improves the power generation efficiency of the solar cell modules.

[0010] In addition, in the invention described in claim 2, the metal roof is a horizontal roof and the fastening fittings have a horizontal seam clamping portion capable of clamping the horizontal seam portion of the horizontal roof, so that the fastening fittings can be securely fixed to the horizontal seam portion and the workability of fixing the solar cell module can be improved. In addition, in the invention described in claim 3, the metal roof is a vertical roof and the fastening fittings are applied to a configuration having a vertical seam clamping portion capable of clamping the vertical seam portion of the vertical roof, so that the fastening fittings can be securely fixed to the vertical seam portion even on a vertical roof and the workability of fixing the solar cell module can be improved.

[0011] In addition, in the invention described in claim 4, the bent plate-shaped mounting bracket is composed of a pressing piece portion capable of pressing the upper surface of the ridge side edge of the solar cell module on the opposing eaves side, a mounting piece portion fixed to the side surface of the ridge side edge of the solar cell module on the eaves side, and a fixing plate portion fixed to the receiving base portion of the fastening bracket, so that the solar cell module on the eaves side can be securely fixed by the pressing piece portion and mounting piece portion of the fastening bracket, improving the workability of fixing the solar cell module.In addition, in the invention described in claim 5, the bent plate-shaped retaining bracket is composed of a pressing piece portion capable of pressing the upper surface of the eaves side edge of the solar cell module on the opposing ridge side, a mounting piece portion fixed to the side surface of the eaves side edge of the solar cell module on the ridge side, and a retaining piece portion capable of holding the bottom surface of the ridge side edge of the solar cell module on the eaves side, so that the solar cell module on the ridge side can be securely fixed by the pressing piece portion, mounting piece portion and holding piece portion, improving the workability of fixing the solar cell module. [Brief description of the drawings]

[0012] [Figure 1] 1 is an overall plan view of an embodiment of the present invention; [Diagram 2] 1 is an overall side view of an embodiment of the present invention; [Diagram 3] FIG. 2 is a partially enlarged plan view of an embodiment of the present invention. [Figure 4] FIG. 2 is a partially enlarged cross-sectional view of an embodiment of the present invention. [Diagram 5]FIG. 2 is a partially enlarged cross-sectional side view of an embodiment of the present invention. [Figure 6] FIG. 2 is a partially enlarged cross-sectional side view of an embodiment of the present invention. [Figure 7] FIG. 2 is a partially enlarged perspective view of an embodiment of the present invention. [Figure 8] FIG. 2 is a partially enlarged exploded perspective view of an embodiment of the present invention. [Figure 9] FIG. 2 is a partially enlarged exploded perspective view of an embodiment of the present invention. [Figure 10] FIG. 2 is a partially enlarged cross-sectional side view of an embodiment of the present invention. [Figure 11] FIG. 2 is a partially enlarged cross-sectional side view of an embodiment of the present invention. [Figure 12] FIG. 2 is a partially enlarged perspective view of an embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0013] 1 to 12 show an embodiment of the present invention. As shown in Figs. 1 and 2, the fixing metal fittings FM are used when fixing a plurality of solar cell modules S... to a roof surface RS of a metal roof R in a roof gradient direction RD in a butt-to-butt facing arrangement in sequence from the eaves side RE to the ridge side RR, and the fixing metal fittings FM are fastened to the roof surface RS and fastened to the solar cell modules S on the opposing eaves side RE. RE Ridge side edge RR E The bent plate-shaped mounting bracket IM is fixed to the solar cell module S on the opposing ridge side RR. RR Eaves side edge RE E The solar cell module S on the eaves side RE is fixed to the RE Ridge side edge RR E and a bent plate-shaped retaining metal fitting RM that holds the

[0014] In this case, as shown in Figures 1, 2, 3, 4, 5 and 7, the metal roof R is a horizontal roof RH, and the fastening fitting HM is provided with a horizontal seam clamping portion JG capable of clamping the horizontal seam portion HJ of the horizontal roof RH. That is, in this case, the fastening fitting HM is arranged in a horizontal direction perpendicular to the roof slope direction RD, one for each solar cell module S, for a total of two, and two horizontal seam clamping portions JG capable of clamping the horizontal seam portion HJ of the roof surface RS of the horizontal roof RH are arranged on the bridge stand KD with bolts B and nuts N, and the horizontal seam clamping portions JG are fixed to the bridge stand KD with the bolts B and nuts N so that their positions can be freely adjusted with the long holes NA formed in the bridge stand KD, and a horizontal crossing base portion YD is erected on the bridge stand KD, and a support portion HM is attached to the horizontal crossing base portion YD. S Place the HM S The mounting bracket IM is placed and fixed on top with mounting bolts TB and nuts N. In this case, the mounting bracket IM is formed by bending a stainless steel plate with a thickness t of about 3 mm and a width of about 70 mm into a substantially Z-shape. The material is not limited to stainless steel plate, and metal plates such as rolled steel plates are also used, with a plate thickness t of about 1 mm to 5 mm. The solar cell module S uses a plurality of polycrystalline silicon cells, and is formed into a square frame shape with external dimensions of about 1200 mm x 530 mm x 35 mm.

[0015] In this case, as shown in Figs. 3, 4, 6, 8 and 9, the bent plate-shaped mounting bracket IM is attached to the solar cell module S on the opposing eaves side RE. RE Ridge side edge upper surface RR EU The pressing piece IM1 can press the solar cell module S on the eaves side RE. RE Ridge side edge part RR ES 2 mounting screws BS BS and screw holes BS H ·BS H The mounting piece portion IM2 and the receiving portion HM of the fastening metal fitting HM are fixed by the S That is, in this case, the support portion HM SThe fixing plate portion IM3 of the mounting bracket IM is placed on the mounting piece portion IM2, the step compensation plate portion IM5 is placed on the fixing plate portion IM3 by inserting it into the insertion hole IM4 formed in the mounting piece portion IM2, the earth plate portion IM6 having the earth protrusion portion IM7 is placed on the step compensation plate portion IM5, and the receiving portion HM is fixed to the receiving portion HM by the mounting bolt TB and the nut N. S The fixed plate portion IM3, the step compensation plate portion IM5, and the ground plate portion IM6 are configured to be fixed on the top by four oblong holes NA·· formed therein so that their positions can be freely adjusted.

[0016] In this case, as shown in Figs. 1, 3, 4, 10, 11, and 12, the bent plate-like retaining metal fittings RM are arranged in a horizontal direction perpendicular to the roof slope direction RD, one for each solar cell module S, for a total of two, and the solar cell modules S on the opposing ridge side RR are arranged in a horizontal direction perpendicular to the roof slope direction RD. RR Eaves side edge upper surface RE EU The pressing piece RM1 can press the solar cell module S on the ridge side RR. RR Eaves side edge part RE ES 2 mounting screws BS BS and screw holes BS H ·BS H The mounting piece RM2 and the solar cell module S on the eaves side RE are fixed by RE Bottom surface of ridge edge RR EB The retaining metal fitting RM is formed by bending a stainless steel plate having a thickness t of about 3 mm and a width of about 70 mm into a substantially Z-shape on the side. Note that the material is not limited to stainless steel plate, and a metal plate such as a rolled steel plate can be used, and the plate thickness t is about 1 mm to 5 mm.

[0017] Since this embodiment has the above-mentioned configuration, as shown in Figs. 1 and 2, when a plurality of solar cell modules S·· are fixed to the roof surface RS of the metal roof R, they are arranged in a butt-to-butt facing manner in order from the eaves side RE to the ridge side RR along the roof slope direction RD and fixed by the fixing metal fittings FM. The fixing metal fittings FM are fastened to the roof surface RS by fastening metal fittings HM that can be fastened to the roof surface RS, and fastening metal fittings HM that are attached to the fastening metal fittings HM and fasten the solar cell modules S··· of the opposing eaves side RE. RE Ridge side edge RR EThe bent plate-shaped mounting bracket IM is fixed to the solar cell module S on the opposing ridge side RR. RR Eaves side edge RE E The solar cell module S on the eaves side RE is fixed to the RE Ridge side edge RR E First, as shown in Figs. 5 and 6, the fastening metal fitting HM constituting the fixing metal fitting FM is fastened to the roof surface RS. In this case, the two horizontal seam clamping parts JG·JG at the bottom of the fastening metal fitting HM are fastened to the horizontal seam parts HJ·HJ at the ridge side RR and the eaves side RE, respectively, and the mounting metal fitting IM is fastened to the receiving part HM of the fastening metal fitting HM. S The solar cell module S on the opposite eaves side RE is also attached to the RE Ridge side edge RR E As shown in FIG. 11, the holding metal fitting RM is fixed to the solar cell module S on the opposing ridge side RR. RR Eaves side edge RE E The solar cell module S on the eaves side RE is fixed to the RE Ridge side edge RR E and these solar cell modules S·· are fixed to the roof surface RS of the metal roof R in the roof slope direction RD, in order from the eaves side RE to the ridge side RR, in an opposing arrangement in a butt-to-butt fashion, and fixed in a direction perpendicular to the roof slope direction RD of the roof surface RS. Therefore, a plurality of solar cell modules S·· can be reliably fixed by the fixing brackets FM, improving the ease of fixing the solar cell modules S. Furthermore, because the mounting brackets IM and holding brackets RM are both formed in a folded plate shape, the facing gap OG between the opposing solar cell modules S·S can be made small, corresponding to the plate thickness t of the mounting brackets IM and holding bracket RM. In this case, since the plate thickness t of the mounting brackets IM and holding bracket RM is about 3 mm, the facing gap OG can be made approximately 3 mm. Therefore, when it snows in the winter, snow can be prevented from packing and accumulating in the facing gap OG, and the snow can slide smoothly on the solar cell modules S. This makes it possible to prevent an increase in the snow load on the metal roof R and improve the power generation efficiency of the solar cell modules S.

[0018] In this case, as shown in Figures 2, 3, 4, 5 and 7, the metal roof R is a horizontal roof RH, and the fastening fittings HM are provided with horizontal seam clamping portions JG capable of clamping the horizontal seam portions HJ of the horizontal roof RH, so that the fastening fittings HM can be securely fixed to the horizontal seam portions HJ, improving the workability of fixing the solar cell module S. In addition, in this case, although not shown, the metal roof R may be a vertical roof, and the fastening fittings HM may be applied to a configuration having vertical seam clamping portions capable of clamping the vertical seam portions of the vertical roof, so that even in a vertical roof, the fastening fittings HM can be securely fixed to the vertical seam portions, improving the workability of fixing the solar cell module S.

[0019] In this case, as shown in Figs. 3, 4, 6, 8 and 9, the bent plate-shaped mounting bracket IM is attached to the solar cell module S on the opposing eaves side RE. RE Ridge side edge upper surface RR EU The pressing piece IM1 can press the solar cell module S on the eaves side RE. RE Ridge side edge part RR ES 2 mounting screws BS BS and screw holes BS H ·BS H The mounting piece portion IM2 and the receiving portion HM of the fastening metal fitting HM are fixed by the S Since the solar cell module S on the eaves side RE is composed of a fixing plate part IM3 that is fixed to the RE The solar cell module S can be reliably fixed by the pressing piece IM1 and the mounting piece IM2 of the fastening metal fitting HM, improving the workability of fixing the solar cell module S. In this case, as shown in Figs. 3, 4, 10, 11, and 12, the bent plate-shaped holding metal fitting RM is fixed to the solar cell module S on the opposing ridge side RR. RR Eaves side edge upper surface RE EU The pressing piece RM1 can press the solar cell module S on the ridge side RR. RR Eaves side edge part RE ES 2 mounting screws BS BS and screw holes BS H ·BS H The mounting piece RM2 and the solar cell module S on the eaves side RE are fixed by REBottom surface of ridge edge RR EB Since the solar cell module S on the roof side RR is configured with a holding piece RM3 capable of holding the solar cell module S on the roof side RR, RR The solar cell module S can be reliably fixed by the pressing piece portion RM1, the mounting piece portion RM2 and the holding piece portion RM3, thereby improving the workability of fixing the solar cell module S.

[0020] Furthermore, the present invention is not limited to the above-mentioned embodiment examples, and for example, by adopting a fastening fitting having a structure that can be fastened to various roof surfaces other than a structure having a horizontal seam clamping portion that can clamp the horizontal seam portion of the horizontally-roofed roof, or a structure having a vertical seam clamping portion that can clamp the vertical seam portion of a vertically-roofed roof, as a fastening fitting that can be fastened to the above-mentioned roof surface, the present invention can be applied not only to horizontal roof structures and vertical roof structures, but also to, for example, folded plate roof structures and various other roof structures.

[0021] Furthermore, the quantity, materials, structures, etc. of the solar cell modules S, metal roof R, fixing brackets FM, fastening brackets HM, mounting brackets IM, and retaining brackets RM may be appropriately changed and designed.

[0022] As described above, the intended purpose can be fully achieved. [Explanation of symbols]

[0023] S Solar cell module S RE Solar Cell Module S RR Solar Cell Module R Metal roof RH Horizontal Roof RS roof surface RD Roof slope direction RE Eaves side RE E Eaves side edge RE EU Top surface of eave side edge RE ES Eaves edge side RR building side RR E Ridge side edge RR EU Ridge side edge top surface RR ES Ridge side edge side RR EB Bottom of ridge edge RM Retaining bracket RM1 pressing piece RM2 mounting piece RM3 holding piece FM Fixture HM Fastening hardware HM S pedestal part HJ Horizontal seam JG Side seam clamping part IM mounting bracket IM1 pressing piece IM2 mounting piece IM3 fixing plate part

Claims

1. A fixing bracket used when fixing a plurality of solar cell modules to the roof surface of a metal roof in a butt-to-butt arrangement in sequence from the eaves side to the ridge side along the roof slope direction, the solar cell module fixing bracket comprising: a fastening bracket that can be attached to the roof surface; a folded plate-shaped mounting bracket that is attached to the fastening bracket and fixed to the ridge side edge portion of the solar cell module on the opposing eaves side; and a folded plate-shaped holding bracket that is fixed to the eaves side edge portion of the solar cell module on the opposing ridge side and holds the ridge side edge portion of the solar cell module on the eaves side.

2. 2. The solar cell module fixing bracket according to claim 1, wherein the metal roof is a horizontal roof, and the fastening bracket has a horizontal seam clamping portion capable of clamping the horizontal seam portion of the horizontal roof.

3. 2. The solar cell module fixing bracket according to claim 1, wherein the metal roof is a vertical roof, and the fastening bracket has a vertical seam clamping portion capable of clamping a vertical seam portion of the vertical roof.

4. The solar cell module fixing bracket described in claim 1, characterized in that the bent plate-shaped mounting bracket comprises a pressing piece portion capable of pressing the upper surface of the ridge side edge portion of the solar cell module on the opposing eaves side, a mounting piece portion fixed to the side surface of the ridge side edge portion of the solar cell module on the eaves side, and a fixing plate portion fixed to the receiving base portion of the fastening bracket.

5. The solar cell module fixing bracket described in claim 1, characterized in that the bent plate-shaped retaining bracket comprises a pressing piece portion capable of pressing the upper surface of the eaves side edge portion of the solar cell module on the opposing ridge side, an attachment piece portion fixed to the side surface of the eaves side edge portion of the solar cell module on the ridge side, and a retaining piece portion capable of holding the bottom surface of the ridge side edge portion of the solar cell module on the eaves side.

6. 13. A solar cell module fixing structure comprising: a solar cell module fixing bracket according to claim 1; and a plurality of solar cell modules are fixed to a metal roof surface in a butt-jointed opposing arrangement in a row from the eaves side to the ridge side along the roof slope direction.

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