Support device for solar cell modules on folded plate roof

Abstract

To provide a support device fixing to support a top end in an eaves direction and a tail end in a ridge direction that face each other of solar cell modules adjacent to each other via a prescribed gap with regard to a solar cell module mounted on an outward folded portion of a folded-plate roof.SOLUTION: A support device comprises: a main body metal fitting (4) fixed by a roof bolt (3) protruding on an outward folded portion of a folded-plate roof; a stopper (5) internally included in the main body metal fitting; a fastening bolt (6) extending upward from the stopper; and a pressing metal fitting (8) holding a top end (M1) and a tail end (M2) of a solar cell module by a fastening nut screwed to the fastening bolt. The main body metal fitting (4) integrally forms support rails (16, 16) supporting the top end (M1) and the tail end (M2) and wing pieces (18, 18) inserted into a gap S between the top end (M1) and the tail end (M2).SELECTED DRAWING: Figure 9

Description

[Technical field]

[0001] The present invention relates to a support device for solar cell modules mounted on a mountain fold extending in the X direction toward the ridge side and the eaves side of a folded-plate roof, which fixes and supports the mutually opposing tip end in the eaves direction and the tail end in the ridge direction of adjacent solar cell modules with a predetermined gap in the X direction. [Background technology]

[0002] Conventionally, devices have been proposed for mounting solar cell modules on the mountain folds of a folded-plate roof.

[0003] For example, the following Patent Document 1 discloses a technique for sequentially installing a lower split metal fitting, an upper split metal fitting, and a mounting rail on the mountain fold of a folded-plate roof, and mounting a solar cell module on the mounting rail. The lower split metal fitting is installed on the top surface of the mountain fold and fixed with a pointed bolt. The upper split metal fitting is fixed to the lower split metal fitting with a horizontal bolt in a state where the side walls of both fittings are overlapped. The mounting rail is a long material that extends along the mountain fold of the folded-plate roof, installed on the upper split metal fitting, and fixed with a vertical bolt that passes through the upper split metal fitting and extends upward.

[0004] However, in the case of Patent Document 1, a pointed bolt protruding from the frame is used to fix and support the folded plate material, so there is a problem that the installation position of the lower split metal fitting is restricted by the position of the pointed bolt.

[0005] Moreover, Patent Document 1 describes a technology for installing a long frame rail using a lower split metal fitting and an upper split metal fitting, which requires a large number of parts, complicated installation work, and high costs.

[0006] Incidentally, in the case of a folded-plate roof, since the mountain fold extends in the X direction toward the ridge side and the eaves side, it is possible to provide a support device for fixing and supporting solar cell modules arranged in a row in the X direction without using a mounting rail.

[0007] That is, by installing a support device consisting of a set of metal fittings at a specified interval in the extension direction of the mountain fold, it is possible to provide a support device that fixes and supports the opposing tip ends in the eaves direction and tail ends in the ridge direction of adjacent solar cell modules with a specified gap in the X direction.This makes the mounting rails as in Patent Document 1 unnecessary, and solves the above problem.

[0008] In this regard, Patent Document 2 discloses a support device which is composed of a lower base metal fitting which is installed at the mountain fold of a corrugated roof and fixed by one axis of a roof bolt protruding from the mountain fold, and an upper base metal fitting which is mounted above the lower base metal fitting so as to be freely rotatable and slidable, and which fixes and supports the opposing tip ends in the eaves direction and tail ends in the ridge direction of adjacent solar cell modules by the upper base metal fitting.

[0009] The upper base plate bracket has a vertical bolt that passes through it and extends upward, and with the end of the solar cell module supported by the panel support bracket, a pressure bracket straddling the upper surface of the end can be moved downward by a nut fastened to the bolt.

[0010] Therefore, according to Patent Document 2, the above problems pointed out regarding Patent Document 1 can be solved. [Prior art documents] [Patent documents]

[0011] [Patent Document 1] Patent No. 5691479 [Patent Document 2] Patent No. 6470673 Summary of the Invention [Problem to be solved by the invention]

[0012] In a configuration in which a set of metal fittings is fixed to the mountain fold of a folded plate roof by one axis of a roof bolt protruding from the mountain fold, as in Patent Document 2, if the nuts of the roof bolt are not sufficiently tightened or become loose, there is a risk of rotation around the bolt axis. If the upper base metal fitting supporting the end of the solar cell module is rotated, there is a problem that the intended support state is lost.

[0013] Furthermore, in the case of Patent Document 2, the upper base bracket is mounted on the lower base bracket so that it can rotate and slide freely, and is fixed by a bolt that penetrates laterally. This means that the weight of the solar cell module may cause deformation or damage to the rotating and sliding parts, making it difficult to adjust the position of the brackets during maintenance after the solar cell module is installed.

[0014] The present invention provides a support device that solves the above-mentioned problems regarding a support device that fixes and supports adjacent tip ends in the eaves direction and tail ends in the ridge direction of solar cell modules mounted on the mountain fold of a folded plate roof. [Means for solving the problem]

[0015] Therefore, the present invention is configured as a means for supporting solar cell modules mounted on a mountain fold extending in the X direction toward the ridge side and the eave side of a folded-plate roof, by fixing and supporting the mutually opposing leading ends in the eaves direction and trailing ends in the ridge direction of adjacent solar cell modules with a predetermined gap S in the X direction, the metal fitting being fixed by one axis of a roof bolt protruding from the mountain fold when installed on the mountain fold of the folded-plate roof, the main metal fitting having a leading support part and a trailing support part formed by arranging a pair of support rails having a predetermined length in the X direction side by side, and the support rails supporting the leading and trailing ends of the solar cell modules from below. a fastening bolt that extends upward from between a pair of support rails while being inserted and engaged with the fastening bolt; and a presser metal fitting that is disposed across the upper surfaces of the front and rear ends of the solar cell module and can be moved downward by a nut fastened to the fastening bolt, wherein the main metal fitting integrally forms a pair of wing pieces that rise from both sides and are inserted into the gap S, and both side edges in the X direction of the wing pieces are brought into contact with the front and rear ends of the solar cell module, respectively, thereby forming a rotation prevention means for the main metal fitting.

[0016] Preferably, the wing piece is provided with a connecting portion protruding outward from both side surfaces of the main body metal fitting and a fin portion extending upward from the connecting portion, and is provided with an earth fitting arranged to be superimposed on the upper surface including the tip support portion and the tail support portion of the main body metal fitting, the width W2 of the earth fitting is formed such that W2>W1 relative to the width W1 of the main body metal fitting, and fitting pieces are provided which extend downward from both side edges of the earth fitting and fit into both side surfaces of the main body metal fitting.

[0017] In this case, it is preferable that the wing pieces have cutouts formed in the side edges of the fin portions facing in the eaves direction, and that the cutouts serve as drainage means for opening the connecting portions of the wing pieces to the side.

[0018] In a preferred embodiment of the present invention, the main fitting is formed from extrusion molding material and has open portions at both ends arranged in the X direction, support rails are extended inward from the upper edges of both side walls, and ribs are formed on the inside of both side walls below the support rails, the fastening bolt is a square root bolt having a square root with a square cross section on the neck that faces the shaft from the head, and the fastening metal fitting is integrally formed with a plate-shaped portion disposed between the pair of support rails, fixing plate portions disposed below the support rails from both sides of the plate-shaped portion, and a downward plate portion extending downward from the fixing plate portions, and a square hole is opened in the plate-shaped portion into which the square root of the neck of the fastening bolt is inserted, and a claw piece is provided on the underside of the plate-shaped portion for engaging the head of the fastening bolt. Therefore, when the fastening fitting is inserted into the main body fitting in the X direction and the downward plate portion is placed on the rib and then lifted, the downward plate portion slides along the inner surfaces of both side walls of the main body fitting to form a guide means, and the plate-shaped portion is fitted between a pair of support rails and the fixed plate portion abuts against the underside of the support rail. Effect of the Invention

[0019] According to the present invention, the load of the solar cell module M is supported by the main metal fitting 4. At this time, there is an effect that the vertical load received by the leading end support portion 16a and the trailing end support portion 16b of the support rail 16 can be firmly supported by both side walls 13, 13 formed integrally with the support rail 16. In other words, the fastening metal fitting 5 provided with the fastening bolt 6 for the pressing metal fitting 8 is configured so as not to receive the load of the solar cell module M, so there is no risk of distortion or damage occurring at the joint between the fastening metal fitting 5 and the main metal fitting 4.

[0020] Furthermore, according to the present invention, the main metal fitting 4 has a pair of wing pieces 18, 18 that are formed integrally and rise from both sides and inserted into the gap S between adjacent solar cell modules, and both side edges of the wing pieces 18 in the X direction are abutted against the leading end surface and the trailing end surface of the solar cell module, respectively, thereby forming a rotation prevention means 32, which has the effect of preventing the main metal fitting 4 from rotating around the axis of the roof bolt 3 even when the fixing nut 12 becomes loose. [Brief description of the drawings]

[0021] [Figure 1] FIG. 1 is a perspective view showing a state in which a support device according to one embodiment of the present invention is installed on a mountain fold of a folded-plate roof and a solar cell module is fixed and supported. [Diagram 2] FIG. 1 is an exploded perspective view of a support device according to one embodiment. [Diagram 3] Regarding the main metal fittings that constitute the support device, (A) is an oblique view showing the state before the main metal fittings are installed on the mountain fold portion of the folded plate roof and fixed with roof bolts, and (B) is an oblique view showing a cross section of the main metal fittings. [Figure 4] 13 shows the state in which the main body fitting is installed and fixed to the mountain fold, where (A) is a cross-sectional view in the Y direction and (B) is a cross-sectional view in the X direction. [Diagram 5] 1A is a perspective view showing a fastener constituting a support device before the fastener is inserted into a main metal fitting, and FIG. 1B is an enlarged view of the fastener. [Figure 6] Regarding the main metal fitting and the fastener, (A) is a perspective view showing the state in which the fastener is inserted into the main metal fitting and raised up, and (B) is a partially enlarged view. [Figure 7] 13 shows the state in which the fastener is installed in the main fitting, (A) is a cross-sectional view in the Y direction, (B) is a cross-sectional view in the X direction, and (C) is a cross-sectional view showing the state during insertion. [Figure 8] Regarding the main body fitting and the earth fitting, (A) is an oblique view showing the state before the earth fitting is attached to the main body fitting, (B) is an oblique view showing an enlarged cross-section of the portion of the main body fitting where the wing pieces are provided, and (C) is an enlarged cross-sectional view showing the state after the earth fitting is attached to the main body fitting. [Figure 9] 13 is an oblique view showing a state in which the main body metal fitting, the fastening metal fitting, and the earth metal fitting are assembled together, with the pressing metal fitting facing the fastening bolt inserted and locked into the fastening metal fitting. FIG. [Figure 10] The state in which a solar cell module is fixed and supported by a support device is shown in cross section in the X direction, where (A) is a cross-sectional view showing the support device placed closest to the eaves, and (B) is a cross-sectional view showing the other support devices. [Figure 11] The figure shows the design of the main fitting and fastening fitting that make up the support device in an assembled state, with (A) being a plan view, (B) being a front view, (C) being a rear view, (D) being a bottom view, and (E) being a right side view. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0022] Preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0023] As shown in Fig. 1, the roofing material constituting the folded plate roof 1 forms a belt-shaped mountain fold 1a and a valley fold 1b extending in the X direction toward the ridge side and the eaves side, and a sloped portion 1c is formed between the mountain fold 1a and the valley fold 1b. The eaves direction is indicated by X1, and the ridge direction is indicated by X2.

[0024] The support device 2 according to one embodiment of the present invention is installed and fixed to the mountain fold portion 1a at a predetermined interval in the X direction, and is configured to fix and support the mutually opposing tip ends M1 in the eaves direction (X1 direction) and tail ends M2 in the ridge direction (X2 direction) of the solar cell modules M, M arranged adjacent to each other with a predetermined gap S in the X direction.

[0025] At this time, a large number of solar cell modules M are arranged vertically and horizontally in the X direction on the roof and in the Y direction perpendicular thereto, and adjacent solar cell modules in the X direction are fixed and supported by a support device 2. Note that the device for fixing and supporting adjacent solar cell modules in the Y direction is not the object of the present invention, and therefore a description thereof will be omitted here.

[0026] As shown in FIG. 2, the support device 2 is made up of, as main components, a roof bolt 3, a main metal fitting 4, a stopper fitting 5, a fastening bolt 6, an earth fitting 7, and a pressing fitting 8.

[0027] (Roof bolts) The roof bolt 3 is a known one, and is configured such that a notched expansion sleeve 9b and a collar 9c are fitted in that order from the large diameter tip of the bolt 9a, and a gasket-equipped washer 10 is fitted onto the threaded shaft of the bolt 9a, and then a nut 11 is screwed on.

[0028] Therefore, the roof bolt 3 is inserted into a hole drilled in the mountain fold 1a of the folded plate roof 1, the expansion sleeve 9b is placed under the mountain fold 1a, and the washer 10 with packing is placed over the mountain fold 1a. When the bolt 9a is rotated with the nut 11 fixed, the expansion sleeve 9b is deformed and expanded. As a result, the expanded expansion sleeve 9b and the washer 10 with packing clamp the mountain fold 1a, and the bolt 9a protrudes upward from the mountain fold 1a (see Figures 3 and 4). Incidentally, the term "roof bolt" generally means a dedicated bolt used to fasten the overlapping portion of the folded plate roof, but the "roof bolt 3" in the present invention is not limited to this, and should be understood to include a bolt configured to be fixed to the mountain fold 1a with a similar configuration and function.

[0029] (Main body bracket) With the bolt 9a of the roof bolt 3 protruding from the mountain fold portion 1a of the folded plate roof 1 as described above, the main body metal fitting 4 is installed on the mountain fold portion 1a as shown in Figures 3 and 4, and fixed by screwing the fixing nut 12 onto the bolt 9a.

[0030] The main body metal fitting 4 is formed by cutting an extrusion molded material made of a metal material such as aluminum to a predetermined size, and both ends opened by the cut are disposed facing in the X direction.

[0031] 3 and 4, the main metal fitting 4 is integrally formed with a pair of plate-like side walls 13, 13 arranged side by side with a gap in the Y direction, a lower horizontal plate portion 14 and an upper horizontal plate portion 15 which connect the lower end vicinity portions of both side walls 13, 13 with a gap in the vertical direction, and a support rail 16 which extends in the X direction by bending inward from the upper edges of both side walls 13, 13. Furthermore, a rib 17 extending in the X direction is integrally formed on the inner surface of both side walls 13, 13 below the support rail 16, 16, and a wing piece 18 standing upward is integrally formed on the outer surface of both side walls 13, 13 near the upper edges.

[0032] The main body fitting 4 is installed by placing the lower ends of both side walls 13, 13 as support parts 13a on the mountain-folded part 1a. The lower horizontal plate part 14 has a window hole 19 elongated in the X direction, and the upper horizontal plate part 15 has a long hole 20 elongated in the X direction.

[0033] When the main metal fitting 4 is installed on the mountain fold 1a, the window hole 19 receives the packing washer 10 and nut 11 of the roof bolt 3, and the bolt 9a is inserted through the long hole 20 and extended upward from the upper horizontal plate 15. Then, the fixing nut 12 is screwed onto the extended end of the bolt 9a to fasten the upper horizontal plate 15, thereby fixing the main metal fitting 4 in the installed state. When fastening, the installation position of the main metal fitting 4 in the X direction relative to the roof bolt 3 on the mountain fold 1a can be adjusted via the window hole 19 and the long hole 20, and the main metal fitting 4 is fixed in the installed state in the desired accurate position.

[0034] With respect to the X direction, the length L (see FIG. 6(B)) of the wing piece 18 is formed shorter than the support rail 16 and is provided facing approximately the center of the support rail 16, and the length L of the wing piece 18 is formed to be a length equivalent to the gap S (see FIG. 1) between adjacent solar cell modules M, M.

[0035] Therefore, the support rail 16 has end portions near both ends extending in the X-direction beyond the wing pieces 18, which form a tip support portion 16a for supporting from below the tip portion M1 in the eaves direction of the solar cell module M arranged on the ridge side, and a tail end support portion 16b for supporting from below the tail end portion M2 in the ridge direction of the solar cell module M arranged on the eaves side.

[0036] (Fastening bracket) 5 to 7, a fastening metal fitting 5 is attached to the main metal fitting 4 that is installed and fixed to the mountain-folded portion 1a. Prior to this attachment, a fastening bolt 6 is inserted into the fastening metal fitting 5 and locked.

[0037] The fastening metal fitting 5 is formed by cutting an extrusion material made of a metal material such as aluminum to a predetermined dimension, and is integrally formed with a thick plate-like portion 21 arranged between the support rails 16, 16 of the main fitting 4, fixed plate portions 22 extending from both sides of the plate-like portion 21 and arranged below the support rails 16, 16, and a downward plate portion 23 bent downward from the fixed plate portion 22. In this case, the pair of downward plate portions 23, 23 has a width dimension that allows them to be inserted between both side walls 13, 13 of the main fitting 4, and further, when inserted, the outer surfaces of the downward plate portions 23, 23 are configured to form guide means 23a that slide along the inner surfaces of both side walls 13, 13.

[0038] The fastening bolt 6 is a square-root bolt having a square root 6c with a square cross-section (square in the illustrated example) on the neck portion that faces the screw shaft portion 6b from the pan-head-shaped head portion 6a, and is inserted from below into the center of the plate-shaped portion 21 of the fastening fitting 5, so that it can maintain an upward position while being prevented from rotating.

[0039] For this reason, the fastening fitting 5 has a rectangular hole 24 (square in the illustrated example) in the center of the plate-shaped portion 21 into which the root 6c of the neck of the fastening bolt 6 is inserted, and a claw piece 25 for engaging the head 6a of the fastening bolt 6 is integrally formed on the underside of the plate-shaped portion 21.

[0040] The fastening bolt 6 is inserted into the square hole 24 from below, and at this time, the square root 6c fits into the square hole 24, making it unable to rotate. When the head 6a is pressed against the underside of the plate-shaped portion 21, the peripheral portion of the head 6a climbs over the claw pieces 25 and is engaged and locked, so that it cannot fall off.

[0041] The fastening metal fitting 5 is inserted into the main metal fitting 4 in the X direction with the fastening bolt 6 inserted and held therein.

[0042] When the fastener 5 is inserted from the open end of the main fitting 4 toward the space between the support rail 16 and the rib 17, the guide means 23a of the downward plate parts 23, 23 slide along the inner surfaces of both side walls 13, 13 of the main fitting 4 while being inserted. In the illustrated embodiment, as shown in Fig. 7(C), the downward plate parts 23, 23 can be moved in the X direction with their lower ends placed on the ribs 17, 17, making the insertion operation easy. At this time, the space between the support rail 16 and the rib 17 is formed wide so that there is a clearance space G between the fastener 5 and the support rail 16, so there is no need to be concerned about fine positioning at the start of insertion, and the operation is easy.

[0043] When the fastening metal fitting 5 is installed in a predetermined position in the main fitting 4 and then pulled up together with the fastening bolt 6, the guide means 23a of the downward plate portions 23, 23 are moved upward while sliding along the inner surfaces of both side walls 13, 13 of the main fitting 4, and the fixing plate portions 22, 22 come into contact with the lower surfaces of the support rails 16, 16 and stop. At this time, the plate-shaped portion 21 is fitted between the tips of the support rails 16, 16, but it is preferable to form the plate-shaped portion 21 so that the upper surface thereof does not protrude from the upper surfaces of the support rails 16, 16.

[0044] In the illustrated example, the downward plate portion 23 is fixed by screwing in the screws 26 from both side walls 13, 13 with the fixing plate portions 22, 22 of the fastening fitting 5 in contact with the underside of the support rails 16, 16. However, screwing in the screws 26 is not necessarily required, and as will be described later, after the solar cell module M is mounted, the fastening bolt 6 may be pulled up by screwing in the fastening nut 27 from above the pressing fitting 8, thereby moving the fastening fitting 5 upward and bringing the fixing plate portions 22, 22 into contact with the underside of the support rails 16, 16.

[0045] (Earth fitting) As shown in Figs. 8 and 9, the grounding metal fitting 7 is disposed over almost the entire upper surface of the main body fitting 4, including the leading end support portion 16a and the trailing end support portion 16b of the support rails 16, 16.

[0046] The grounding fitting 7 is formed by press molding a thin metal plate, and has an opening 28 for inserting the fastening bolt 6. In the illustrated embodiment, the opening 28 is formed as a notch from the edge of the grounding fitting 7 in the X direction, which makes it possible to introduce the fastening bolt 6 into the opening 28 from the X direction.

[0047] At both ends in the X direction of the grounding fitting 7, boss-shaped small protrusions are formed by press molding, with downward protrusions 29a protruding from the underside which bite into the leading support parts 16a and the trailing support parts 16b of the support rails 16, 16, and upward protrusions 29b protruding from the upper side in the vicinity of the downward protrusions 29a. The upward protrusions 29b are made to bite into the undersides of the leading end part M1 and the trailing end part M2 when the solar cell module M is mounted as described below.

[0048] The earth fitting 7 is provided with fitting pieces 30 bent downward from both side edges at the four corners thereof, and is configured so that when the earth fitting 7 is placed on top of the main fitting 4, the fitting pieces 30 are fitted into both side surfaces of the main fitting 4.

[0049] As shown in FIG. 8(C), the width W2 of the earth fitting 7 is formed relative to the width W1 of the main fitting 4 such that W2>W1. This makes it possible to bend the fitting pieces 30 that fit onto both side surfaces of the main fitting 4 downward from the side edges of the earth fitting 7 by press molding.

[0050] In contrast, wing pieces 18 of main metal fitting 4 are configured so as not to interfere with both side edges of grounding metal fitting 7, and are formed by connecting portions 18a that protrude outward from both side surfaces of main metal fitting 4, and fin portions 18b that extend upward and incline outward from connecting portions 18a. As a result, as shown in Figure 8(C), grounding metal fitting 7 is formed to have a width W2 that covers the entire top surface of main metal fitting 4.

[0051] 8(B), the wing piece 18 has a cutout 18c formed in the side edge of the fin 18b facing the eaves direction (X1 direction) to provide drainage means 31 that opens the connecting portion 18a of the wing piece 18 to the side. As a result, rainwater that accumulates in the L-shaped bend between the connecting portion 18a and the fin 18b on the roof is drained from the drainage means 31 formed by the cutout 18c located in the eaves direction, preventing early corrosion of the wing piece 18 and the earth metal fitting 7.

[0052] (Mounting and holding down of solar cell modules) As shown in Figure 9, with respect to the X direction, the wing pieces 18, 18 are set as reference positions corresponding to the gap S between the solar cell modules M, M, and from the reference position, the tip end M1 of the ridge-side solar cell module M is mounted in an area R1 extending toward the ridge side, and the tail end M2 of the eaves-side solar cell module M is mounted in an area R2 extending toward the eaves side.

[0053] A clamping metal fitting 8 is arranged in a straddling state on the upper surfaces of the front end M1 and the rear end M2 of the mounted solar cell module M, and with the fastening bolt 6 inserted through the hole 8a, the fastening nut 27 is screwed from above to move the clamping metal fitting 8 downward. As a result, the front end M1 and the rear end M2 are fixed in a state where they are pressed against the front end support part 16a and the rear end support part 16b of the support rail 16 of the main body metal fitting 4 via the grounding metal fitting 7.

[0054] The clamping fixture 8 is well known and has rail-shaped flanges 8c, 8c extending on both sides of a grooved portion 8b having a hole 8a, and is configured so that the grooved portion 8b is inserted into the gap S between adjacent solar cell modules and the flanges 8c, 8c are abutted against the upper surfaces of the leading end M1 and the trailing end M2 of the solar cell module, respectively.

[0055] FIG. 10 shows a state in which the solar cell module M is fixed and supported by the supporting device of the present invention to the mountain folded portion 3a of the folded-plate roof in the manner described above.

[0056] Figure 10(A) shows a support device installed at the eaves end on the eaves side. The basic configuration is similar to the support device 2 described in the above embodiment, but since it does not fix and support the tip end M1 and tail end M2 of adjacent solar cell modules, but only the tip end of the solar cell module M arranged at the eaves end, a clamping bracket 8X having a different shape from the above-mentioned clamping bracket 8 is used.

[0057] As shown in Fig. 10(B), in the present invention, the load of the solar cell module M is supported by the main metal fitting 4 via the grounding metal fitting 7. The vertical load received by the leading end support portion 16a and the trailing end support portion 16b of the support rail 16 is firmly supported by both side walls 13, 13 formed integrally with the support rail 16. In other words, the fastening metal fitting 5 provided with the fastening bolts 6 for the pressing metal fittings 8 that fix and hold the leading end M1 and the trailing end M2 of the solar cell module from above is configured so as not to receive the load of the solar cell module M, and therefore there is no risk of distortion or damage occurring at the joint between the fastening metal fitting 5 and the main metal fitting 4.

[0058] However, when the main metal fitting 4 is installed on the mountain fold 1a of the folded plate roof 1 and is configured to be fixed by one axis of the roof bolt 3, if the nut loosens, the main metal fitting 4 may rotate around the axis of the bolt unless a rotation prevention means is provided. This causes a problem that the support part that supports the underside of the solar cell module may become misaligned from the underside.

[0059] In this regard, as shown in FIG. 10(B), the main body metal fitting 4 is configured such that a pair of wing pieces 18, 18 that are integrally formed and stand up from both sides are inserted into the gap S between adjacent solar cell modules, and both side edges in the X direction of the wing pieces 18 are abutted against the leading end surface and the trailing end surface of the solar cell module, respectively. This abutment portion forms a rotation prevention means 32, which has the advantage of being able to prevent the main body metal fitting 4 from rotating. [Explanation of symbols]

[0060] M Solar Cell Module M1 Tip M2 tail end S Gap 1. Folded plate roof 1a Yamaoribe 1b Tanioribe 1c Slope 2 Support device 3 Roof bolts 4 Main body bracket 5 Fastener 6 Fastening bolts 6a head 6b Screw shaft 6c square root 7. Grounding bracket 8 Clamp 8a hole 8b Groove 8c flange 9a Bolt 9b Expansion sleeve 9c Color 10 Packing washer 11 Nut 12 Fixing nut 13 Side wall 13a Connection branch 14 Lower side plate 15 Upper side plate 16 Support Rail 16a Tip support part 16b Tail end support 17 Ribs 18 wing pieces 18a Continuous section 18b Fin section 18c Notch 19 Window Hole 20 long hole 21 Disk-like part 22 Fixed plate part 23 Downward plate section 23a Guide means 24 Square hole 25 Nail Piece 26 Bis 27 Fastening nut 28 Opening 29a Downward protrusion 29b Upward protrusion 30 Mating piece 31 Drainage means 32 Rotation prevention means

Claims

1. A support device for fixing and supporting a leading end (M1) in the eaves direction and a trailing end (M2) in the ridge direction of adjacent solar cell modules (M, M) facing each other with a predetermined gap S in the X direction, the leading end (M1) in the eaves direction and the trailing end (M2) in the ridge direction of adjacent solar cell modules (M, M) mounted on a mountain fold (1a) extending in the X direction toward the ridge side and the eaves side of a folded plate roof, a main body metal fitting (4) which is fixed by one axis of a roof bolt (3) protruding from a mountain fold portion of a folded-plate roof when installed on the mountain fold portion, and which has a pair of support rails (16, 16) arranged in parallel and having a predetermined length in the X direction, and which has a leading end support portion (16a) and a trailing end support portion (16b) which support the leading end and trailing end of the solar cell module from below by the support rails; A fastener (5) that is fitted inside the main metal fitting and is engaged with the lower side of the support rail; a fastening bolt (6) extending upward from between the pair of support rails while being inserted and engaged with the fastening metal fitting; a clamp (8) that is moved downward by a fastening nut (27) that is fastened to the fastening bolt while being straddled over the top surfaces of the front and rear ends of the solar cell module, The solar cell module supporting device for a folded plate roof is characterized in that the main metal fitting (4) is integrally formed with a pair of wing pieces (18, 18) which rise from both sides and are inserted into the gap S, and a rotation prevention means (32) is formed to prevent rotation of the main metal fitting by abutting both side edges in the X direction of the wing pieces against the leading end surface and the tail end surface of the solar cell module, respectively.

2. The wing pieces (18) each include a connecting portion (18a) that protrudes outward from both side surfaces of the main metal fitting, and a fin portion (18b) that extends upward from the connecting portion. An earth metal fitting (7) is provided so as to be placed on the upper surface of the main metal fitting including the front end support portion and the rear end support portion, The support device for a solar cell module on a folded plate roof as described in claim 1, characterized in that the width W2 of the earthing metal fitting (7) is formed so that W2 > W1 relative to the width W1 of the main body fitting (4), and the support device is provided with engaging pieces (30) that extend downward from both side edges of the earthing metal fitting and engage with both side surfaces of the main body fitting.

3. A support device for a solar cell module on a folded plate roof as described in claim 1 or 2, characterized in that the wing piece (18) has a cutout portion (18c) formed in the side edge portion facing the eaves direction of the fin portion (18b), and the cutout portion constitutes a drainage means (31) that opens the connecting portion of the wing piece to the side.

4. The main metal fitting (4) is formed of an extrusion molding material and has open portions at both ends arranged in the X direction. Support rails (16, 16) are extended inward from the upper edges of both side walls (13, 13), and ribs (17) are formed on the inside of both side walls below the support rails. The fastening bolt (6) is a square root bolt having a square root (6c) with a cross section on a neck portion extending from a head portion (6a) to a shaft portion (6b), The fastening metal fitting (5) is integrally formed with a plate-shaped portion (21) disposed between the pair of support rails, fixing plate portions (22) disposed on both sides of the plate-shaped portion below the support rails, and a downward plate portion (23) extending downward from the fixing plate portions. A square hole (24) is formed in the plate-shaped portion (21) into which a square root (6c) of a neck portion of a fastening bolt is inserted, and a claw piece (25) for engaging the head portion (6a) of the fastening bolt is provided on the underside of the plate-shaped portion (21).

4. The support device for a solar cell module on a folded plate roof according to claim 1, 2 or 3, characterized in that when the fastening metal fitting (5) is inserted into the main body fitting (4) in the X direction and the downward plate portion (23) is placed on the rib (17) and then the fastening metal fitting (5) is lifted, the downward plate portion (23, 23) forms a guide means (23a) that slides along the inner surfaces of both side walls (13, 13) of the main body fitting, the plate-shaped portion (21) is fitted between a pair of support rails (16, 16), and the fixed plate portion (22, 22) abuts against the underside of the support rails (16, 16).

Images