WO2016157692A1 - Solar photovoltaic device and method for constructing solar photovoltaic devices - Google Patents

Abstract

A solar photovoltaic device according to one embodiment of this disclosure comprises a solar cell module installed on the eave-side of a roof, and a solar cell module disposed adjacent to the solar cell module on the ridge side. A frame comprises an inner groove to accommodate the peripheral edge of a solar cell panel, an outer groove provided on the side opposite to the solar cell panel, and an inner flange extending to the inside of the solar cell module. The solar photovoltaic device comprises a lower fitting that holds the inner flange of the frame and an upper fitting that is disposed above the lower fitting and that comprises a first inserting portion inserted into the inner flange of the frame and a second inserting portion inserted into the outer groove of the frame.

Description

Photovoltaic power generation apparatus and method for installing solar power generation apparatus

The present disclosure relates to a solar power generation device and a method for installing the solar power generation device.

Conventionally, various fixing structures used when a solar power generation apparatus is constructed by fixing a solar cell module to a roof are known. For example, Patent Document 1 discloses a structure for fixing a solar cell module on a pedestal frame installed on a roof by pressing down a flange portion protruding outside the module frame with a presser fitting having a substantially U-shaped cross section. ing.

JP 2014-194133 A

In a solar power generation device, it is an important issue to save space by minimizing the gap between adjacent solar cell modules. In addition, it is desirable that the photovoltaic power generation apparatus is easy to fix on the roof and has excellent workability. When a large gap is formed between the solar cell modules, it may be necessary to install a cover that covers the gap, and it is important to reduce the gap from the viewpoint of reducing the number of construction steps and material costs.

The solar power generation device which is one mode of the present disclosure includes a first solar cell panel, and a first frame provided on the eaves side of the roof, and a first frame provided on a peripheral portion of the panel. A second solar cell module having a battery module, a second solar cell panel, and a second frame provided on a peripheral portion of the panel, and disposed adjacent to the ridge side of the first solar cell module; Each frame has an inner groove that houses the peripheral edge of each solar cell panel, an outer groove provided on the opposite side of each solar cell panel, and an inner side of each solar cell module A lower fitting for holding the inner flange of the first frame, a first fitting portion disposed on the lower fitting and inserted into the outer groove of the first frame, and a second fitting Has a second insertion part to be inserted into the outer groove of the frame And a bracket on that.

The photovoltaic power generation apparatus according to one aspect of the present disclosure is excellent in workability and can reduce the space between the solar cell modules, thereby realizing space saving.

It is a figure which shows the solar power generation device which is an example of embodiment. It is a figure which shows a mode that the baseplate which is an example of embodiment was installed on the field plate. It is sectional drawing of the solar cell module which is an example of embodiment. It is AA sectional view taken on the line in FIG. It is a perspective view of the base metal fitting which is an example of an embodiment. FIG. 6 is a sectional view taken along line BB in FIG. 5. It is a perspective view of the lower metal fitting which is an example of an embodiment. It is CC sectional view taken on the line in FIG. It is a perspective view of the upper metal fitting which is an example of an embodiment. FIG. 10 is a sectional view taken along line DD in FIG. 9. It is a figure for demonstrating the construction method of the solar power generation device which is an example of embodiment. It is a figure for demonstrating the construction method of the solar power generation device which is an example of embodiment. It is a figure for demonstrating the construction method of the solar power generation device which is an example of embodiment. It is a perspective view which shows the modification of a base metal fitting. It is the EE sectional view taken on the line in FIG. It is sectional drawing which shows the solar power generation device which is another example of embodiment. It is a perspective view of the mount frame which is another example of an embodiment. It is the FF sectional view taken on the line in FIG. It is a perspective view of the lower metal fitting which is another example of an embodiment. FIG. 20 is a sectional view taken along line GG in FIG. 19. It is a perspective view of the upper metal fitting which is another example of an embodiment. It is the HH sectional view taken on the line in FIG. It is sectional drawing which shows the eaves side edge part of the solar power generation device which is another example of embodiment, and its vicinity. It is a perspective view of the lower metal fitting for eaves side edge parts which is another example of an embodiment. It is the II sectional view taken on the line in FIG. It is a top view which shows the modification of a mount frame and a lower metal fitting. It is a top view which shows the other modification of a mount frame and a lower metal fitting.

Hereinafter, an example of an embodiment will be described in detail with reference to the drawings.
The drawings referred to in the embodiments are schematically described, and the dimensional ratios of the components drawn in the drawings may be different from the actual products. Specific dimensional ratios and the like should be determined in consideration of the following description. In the present specification, the description of “substantially **” is intended to include the case where substantially the same is recognized as substantially the same as the case where substantially the same is described as an example.

In this specification, with the base metal fitting, the lower metal fitting, and the upper metal fitting fixed to the roof, the direction of each metal fitting along the roof girder direction (direction perpendicular to the roof eaves direction) is referred to as “lateral direction”. The direction of each metal fitting along the direction perpendicular to the roof base plate is referred to as “vertical direction”. Moreover, the direction of each metal fitting along the eaves direction of a roof may be called the vertical direction. In the drawings used in the description of the embodiment, the eaves direction of the roof 100 is indicated by an arrow α, the horizontal direction is indicated by an arrow β, and the vertical direction is indicated by an arrow γ.

The solar power generation apparatus 10 as an example of the embodiment will be described in detail below with reference to FIGS. FIG. 1 is a diagram illustrating the entire photovoltaic power generation apparatus 10 installed on a roof 100. FIG. 2 shows a state in which the base plate 30 constituting the solar power generation device 10 is installed on the field plate 101.

As illustrated in FIG. 1, the solar power generation device 10 is configured by arranging a plurality of solar cell modules 11 side by side on a roof 100. Although mentioned later in detail, the solar power generation device 10 is provided with the base metal fitting 32, the lower metal fitting 50, and the upper metal fitting 60 as a fixing member for fixing the solar cell module 11 to the roof 100 (refer FIG. 4 etc.). Each metal fitting includes a solar cell module 11a (first solar cell module) disposed on the eaves side of the roof 100 and a solar cell module 11b (second solar cell module) disposed adjacent to the ridge side of the solar cell module 11a. ). For example, another metal fitting (not shown) is attached to the eaves side end and the ridge side end of the solar power generation device 10.

Here, the terms of the solar cell modules 11a and 11b (first and second solar cell modules) indicate relative positional relationships between the two solar cell modules. That is, among the plurality of solar cell modules 11 provided in the solar power generation device 10, the solar cell module 11a is arranged on the eaves side with respect to any two solar cell modules 11 adjacent in the eave building direction. Thus, the solar cell module 11b is arranged on the ridge side.

The solar cell module 11 has a solar cell panel 12 in which a plurality of solar cells are sandwiched between protective members such as glass plates, and a frame 13 provided on the peripheral edge of the panel. The solar cell module 11 and the solar cell panel 12 illustrated in FIG. 1 are rectangular in plan view. However, the solar cell module 11 may have a plan view shape other than a rectangle, or may have another shape such as a square. The plan view is a case when viewed from the vertical direction with respect to the light receiving surface (upper surface) of the solar cell panel 12. In this embodiment, each solar cell module 11 is installed on the roof 100 in a state where the short sides of the solar cell modules 11 are substantially parallel to the eaves-ridge direction and the short sides of the adjacent solar cell modules 11 are in contact with each other. ing. The roof material 102 is disposed around the solar power generation device 10 and is not disposed under the solar power generation device 10.

The frame 13 protects the peripheral edge of the solar cell panel 12 and is fixed to the base metal fitting 32 using the lower metal fitting 50 and the upper metal fitting 60. The frame 13 is a long member formed by extruding a metal material such as aluminum. The frame 13 is composed of a plurality of members attached along the long sides and the short sides of the solar cell panel 12, and is connected to each other using corner pieces or the like to surround the four sides of the solar cell panel 12. An outer groove 24 and an inner flange 26 described later are provided on the frame 13 attached along the long side of the solar cell panel 12.

As illustrated in FIG. 2, a plurality of base plates 30 are installed under the solar cell module 11, and a base metal fitting 32 is provided on each base plate 30. Although the base metal fitting 32 may be fixed to the base plate 101 without using the base plate 30, the use of the base plate 30 facilitates the alignment of the base metal fitting 32 and improves the workability. In the case of using the base plate 30, the base metal fitting 32 is fixed (temporarily fixed) in advance on a predetermined position on the base plate 30, and the base plate is transported to the roof 100 and installed on the base plate 101. The base plate 30 can be installed with high accuracy while being simple as will be described later.

The base plate 30 is, for example, a metal plate-like member, and is directly fixed to the base plate 101 without the roof material 102 interposed between the base plate 30 and the base plate 101. A waterproof sheet or the like may be provided between the base plate 30 and the base plate 101. In the example shown in FIG. 2, one holding portion 31 and one base metal fitting 32 are provided on one base plate 30. The base plate 30 is about half the size of the solar cell module 11, and one solar cell module 11 (indicated by a one-dot chain line) is installed on approximately two base plates 30. In the solar cell module 11, the eaves side end and the ridge side end are fixed to the base metal fitting 32 at a total of four locations.

The base plate 30 is disposed on the base plate 101 from one side in the lateral direction of the eaves side (hereinafter referred to as “left side”). On the base plate 30a arranged on the left side, a part of the base plate 30c arranged adjacent to the other side in the horizontal direction (hereinafter referred to as “right side”) is overlaid. Further, a part of the base plate 30b disposed adjacent to the ridge side is overlaid on the base plate 30a. In this way, the base plate 30 is installed in order from the left on the eave side to the right on the ridge side. Base plate 30a, 30b, 30c shows relative positional relationship similarly to the case of the solar cell module 11, and all can use the same plate.

The holding part 31 is provided on the right side of each base plate 30. The holding portion 31 provided on the base plate 30a has a gap in which the base plate 30c can be inserted between the holding portion 31 and the base plate 30a. The end portion of the base plate 30c stacked on the base plate 30a is inserted into the gap and is held by the holding portion 31 so as not to be lifted upward.

The base metal fitting 32 is provided with a claw portion 44 having the same function as the holding portion 31. The base fitting 32 is provided on the ridge side of each base plate 30, and the claw portion 44 is provided on the ridge side end of the base fitting 32. The base metal fitting 32 provided on the base plate 30a has a gap in which the base plate 30b can be inserted between the base metal 30 and the base plate 30a. The end of the base plate 30b that is overlaid on the base plate 30a is inserted into the gap and pressed by the claw portion 44 so as not to float upward.

The base metal fitting 32 is a metal fitting for fixing the lower metal fitting 50 and the upper metal fitting 60, and is fixed to the base plate 101. The base metal fitting 32 is fixed to the field board 101 using, for example, wood screws 47 (see FIG. 4). The wood screw 47 is attached to the screw holes 42 and 43 (see FIG. 6) of the base metal fitting 32 and passes through the base plate 30 and is fixed to the field board 101.

FIG. 3 is a sectional view of the solar cell module 11 (cross section in the width direction of the frame 13).
As shown in FIG. 3, the frame 13 of the solar cell module 11 is provided on the opposite side of the main body portion 20, the inner groove 22 that houses the peripheral edge of the solar cell panel 12, and the solar cell panel 12 in the eaves-ridge direction. It has the outer groove | channel 24 and the inner collar 26 protruded inside the eaves-ridge direction of the solar cell module 11. FIG. The shape of the main body 20 is not particularly limited, but preferably has a hollow prismatic shape from the viewpoint of improving rigidity, reducing weight, reducing material costs, and the like.

The frame 13 has a collar portion 21 erected on the upper surface of the main body portion 20. The flange portion 21 extends straight upward from the outside of the main body portion 20 and is bent inward in the eaves-ridge direction so as to have a substantially L-shaped cross section. An inner groove 22 is formed between the upper surface of the main body portion 20 and the flange portion 21 as a gap into which the solar cell panel 12 can be inserted. The inner groove 22 is formed along the longitudinal direction of the frame 13. A peripheral edge portion of the solar cell panel 12 is inserted into the inner groove 22, and a gap between the solar cell panel 12 and the inner groove 22 is filled with, for example, an adhesive.

The frame 13 has a flange portion 23 erected on the lower surface of the main body portion 20. The eaves portion 23 extends straight downward from the inside of the main body portion 20 in the eaves direction, and is bent outwardly in the eaves direction so as to have a substantially L-shaped cross section. An outer groove 24 is formed between the lower surface of the main body portion 20 and the flange portion 23 as a gap into which the insertion portion of the upper metal fitting 60 can be inserted. The outer groove 24 may be formed only in a portion to which the upper metal fitting 60 is attached, but is preferably formed along the longitudinal direction of the frame 13. The outer groove 24 has dimensions (depth depth D24, width W24 (length in the vertical direction)) in which the insertion portion can be inserted. The bottom plate 25 is a part of the flange portion 23 and constitutes the bottom portion of the frame 13.

The inner flange 26 extends from the lower part of the frame 13 toward the inside of the eaves-ridge direction of the solar cell module 11, and is provided substantially perpendicular to the inner wall of the frame 13 facing the inner side of the solar cell module 11. preferable. In the present embodiment, the inner collar 26 extends from a portion (a portion along the vertical direction) constituting the inner wall of the frame 13 in the collar portion 23, and constitutes the bottom portion of the frame 13 together with the bottom plate 25. The lower surface of the bottom plate 25 and the lower surface of the inner flange 26 form a flat surface (the lower surface of the frame 13) without a continuous step. The inner collar 26 may be formed only in a portion to which the lower metal fitting 50 is attached, but is preferably formed continuously along the longitudinal direction of the frame 13.

4 is a cross-sectional view taken along the line AA in FIG. 1 (a cross-sectional view of a portion to which each metal fitting is attached).
As shown in FIG. 4, the solar power generation device 10 includes a lower metal fitting 50 and an upper metal fitting 60 disposed on the lower metal fitting 50. The lower metal fitting 50 and the upper metal fitting 60 are attached across the solar cell modules 11a and 11b arranged adjacent to each other in the eaves-ridge direction. In the present embodiment, the lower metal fitting 50 and the upper metal fitting 60 are fixed to the base metal fitting 32 screwed to the base plate 101. The solar power generation device 10 includes a bolt 45 for fixing the lower metal fitting 50 and the upper metal fitting 60 to the base metal fitting 32, and each metal fitting is connected using a bolt 45 and a nut 46.

The base metal fitting 32 has a base portion 33 on which the solar cell modules 11a and 11b are placed. A lower metal fitting 50 and an upper metal fitting 60 are interposed between each solar cell module and the pedestal portion 33, and the lower metal fitting 50 and the upper metal fitting 60 are fixed to the pedestal portion 33 using bolts 45. The height of the pedestal 33 is, for example, so that the height of the light receiving surface (upper surface) of the solar cell module 11 is approximately the same as the height of the upper surface of the roof material 102 disposed around the solar power generation device 10. The thickness is set in consideration of the thickness of the battery module 11 and the thickness of the roof material 102. The pedestal 33 is provided with a guide rail 39 that holds the bolt 45. The guide rail 39 holds the bolt 45 in a state where the shaft portion of the bolt 45 stands up on the pedestal portion 33 in the vertical direction.

The base metal fitting 32 has legs 40 and 41 for fixing the metal fitting to the base plate 101. The leg portion 40 extends from the eave side end of the pedestal portion 33 toward the eave side, and is fixed to the base plate 101 by the wood screw 47 under the solar cell module 11a. The leg portion 41 extends from the ridge side end of the pedestal portion 33 toward the ridge side, and is fixed to the base plate 101 by the wood screw 47 under the solar cell module 11b. The base metal fitting 32 has a claw portion 44 and also functions as a support member for the base plate 30b disposed on the ridge side. The claw portion 44 extends from the ridge side end portion of the leg portion 41 to the ridge side with a gap in which the base plate 30b can be inserted between the claw portion 44 and the base plate 30a. The ridge side end of the claw portion 44 is bent upward so that the base plate 30b can be easily inserted.

The lower metal fitting 50 and the upper metal fitting 60 are attached to the frame 13 of the solar cell module 11. On the lower metal fitting 50, a frame 13a (first frame) provided on the peripheral edge of the solar cell panel 12a (first solar cell panel) constituting the solar cell module 11a is placed. The lower metal fitting 50 is a metal fitting that holds the inner collar 26a of the frame 13a, and fixes the ridge side end of the solar cell module 11a to the base metal fitting 32 using the inner collar 26a. The upper metal fitting 60 is disposed on the lower metal fitting 50, and on the upper metal fitting 60, the frame 13b (the second solar cell panel) provided at the peripheral edge of the solar cell panel 12b (second solar cell panel) constituting the solar cell module 11b. Frame). The upper metal fitting 60 is attached to both the frames 13a and 13b, and fixes the ridge side end portion of the solar cell module 11a and the eave side end portion of the solar cell module 11b to the base metal fitting 32. The upper metal fitting 60 includes a first insertion portion 63 that is inserted into the outer groove 24a of the frame 13a, and a second insertion portion 64 that is inserted into the outer groove 24b of the frame 13b.

The lower metal fitting 50 and the upper metal fitting 60 have bolt holes 52 and 62 through which the bolts 45 are inserted, respectively. The bolt holes 52 and 62 are ridge side portions of the respective metal fittings, and are formed on the ridge side with respect to a position where the inner flange 26b of the frame 13b is supported. That is, the bolt holes 52 and 62 are formed at positions where the nut 46 attached on the upper metal fitting 60 does not interfere with the inner flange 26b without overlapping with the inner flange 26b of the frame 13b. The bolt holes 52 and 62 are formed at positions where they overlap each other.

The lower metal fitting 50 may be fixed to the base metal fitting 32 only with the bolt 45 and the nut 46, but is preferably inserted into the through hole 36 formed in the base metal fitting 32 in order to increase the binding force with the base metal fitting 32. The leg portion 56 is provided. The leg portion 56 is a portion that is hooked on the base metal fitting 32 and is provided on the eaves side of the lower metal fitting 50. By providing the leg portion 56, for example, durability against negative pressure acting on the solar cell module 11 is improved. The eaves side portion of the lower metal fitting 50 is fixed by catching the leg portion 56 and the base metal fitting 32, and the ridge side portion is fixed to the base metal fitting 32 by a bolt 45 and a nut 46. The upper metal fitting 60 is fixed to the base metal fitting 32 with bolts 45 and nuts 46. However, a first insertion portion 63 to be inserted into the outer groove 24a of the frame 13a is provided at the eave side end portion of the upper metal fitting 60, and the inner flange 26a is pressed by the lower metal fitting 50 in the frame 13a. The binding between the upper metal fitting 60 and the base metal fitting 32 is sufficiently strong.

Hereinafter, the configurations of the base metal fitting 32, the lower metal fitting 50, and the upper metal fitting 60 will be described in more detail with reference to FIGS. 5 to 10 in addition to FIG.

5 and 6 are views showing the base metal fitting 32. FIG.
The base metal fitting 32 has a structure in which the leg portions 40 and 41 fixed to the base plate 101 are respectively formed on the eaves side and the ridge side of the pedestal portion 33 to which the lower metal fitting 50 and the upper metal fitting 60 are fixed as described above. Have. The base metal fitting 32 can be fixed to the field board 101 by providing the fixing parts with the field board 101 on both sides in the eaves ridge direction. The leg portions 40 and 41 are formed in a flat plate shape along the base plate 101 and have screw holes 42 and 43 to which the wood screws 47 are attached, respectively. The screw holes 42, 43 are formed one by one closer to both lateral ends than the lateral center of the leg portion 40. The leg portions 40 and 41 also extend below the pedestal portion 33. Thereby, the load resistance of the base metal fitting 32 is improved. The base metal fitting 32 has a shape extending in the lateral direction longer than the eaves-ridge direction. As a result, an area where the claw portion 44 and the base plate 30b overlap with each other increases, and the base metal plate 32 can stably support the base plate 30b.

The pedestal portion 33 includes a standing wall portion 34 provided substantially perpendicular to the leg portions 40, 41 and a top plate portion 35 provided substantially parallel to the base plate 101 (leg portions 40, 41). . The lower metal fitting 50 and the upper metal fitting 60 are fixed to the top plate portion 35. The top plate portion 35 is provided with a through hole 36 (inserted portion) into which the leg portion 56 of the lower metal fitting 50 is inserted, and a guide rail 39 for attaching the bolt 45. The through hole 36 is formed in a rectangular shape in plan view at the lateral center of the top plate portion 35. The guide rail 39 is formed over the entire lateral length of the top plate portion 35. The through hole 36 is located on the eave side of the top plate portion 35, and the guide rail 39 is located on the ridge side of the top plate portion 35.

The guide rail 39 holds the head of the bolt 45 so that it can slide laterally. The guide rail 39 includes an opening 37 formed along the horizontal direction of the top plate portion 35 and a bottom plate 38 provided below the opening 37 along the opening 37. The opening 37 is formed with a width wider than the diameter of the shaft portion of the bolt 45 and narrower than the diameter of the head of the bolt 45. The bottom plate 38 is provided with a space in which the head of the bolt 45 can be inserted between the opening 37 and the top plate 35 and the ridge-side standing wall 34 are connected to each other so as to have a substantially L-shaped cross section. The shaft 45 of the bolt 45 inserted into the guide rail 39 protrudes from the opening 37 and stands on the top plate 35. The head is hooked on the edge of the opening 37 and held in the guide rail 39. In order to improve the durability of the fastening portion of the bolt 45 and the nut 46, the thickness of the edge portion of the opening 37 that holds the head of the bolt 45 in the top plate portion 35 is larger than the thickness of the other portions of the top plate portion 35. Is also formed large.

In addition, the shape of the base metal fitting 32 is not limited to the shape illustrated in FIGS. 5 and 6. For example, the insertion part of the leg part 56 of the lower metal fitting 50 may be an insertion part formed in a groove shape (see FIGS. 14 and 15 described later). The shape of the through hole 36 is not limited to a rectangular shape in plan view, and may be an elliptical shape, for example. Further, instead of the guide rail 39, a bolt hole may be formed in the top plate portion 35, and the bolt 45 may be attached to the bolt hole.

7 and 8 are views showing the lower metal fitting 50. FIG.
The lower metal fitting 50 includes a base portion 51 formed in a flat plate shape and a pedestal portion 53 on which the frame 13a is placed. The lower surface of the base portion 51 is in contact with the top plate portion 35 of the base metal fitting 32, and the upper metal fitting 60 is disposed on the upper surface of the base portion 51 (see FIG. 4). The pedestal portion 53 is formed higher than the base portion 51 and does not contact the base metal fitting 32. The pedestal 53 is preferably formed so that the frame 13a placed thereon and the frame 13b placed on the upper metal fitting 60 have substantially the same height. For example, the pedestal portion 53 is formed so that the height of the upper surface of the pedestal portion 53 is substantially the same as the height of the upper surface of the base portion 61 of the upper metal fitting 60 disposed on the base portion 51. The pedestal portion 53 is formed over the entire length in the lateral direction on the eaves side of the lower metal fitting 50.

The lower metal fitting 50 extends longer in the eaves ridge direction than in the horizontal direction, and extends to the ridge side beyond the inner flange 26b of the frame 13b (see FIG. 4). A bolt hole 52 is formed in the central portion of the base portion 51 in the lateral direction. The bolt hole 52 is a long hole formed long in the eaves ridge direction, and is formed at a position where the eave side end of the long hole does not overlap the inner flange 26b. By making the bolt hole 52 a long hole, the lower metal fitting 50 can be moved to the ridge side with the shaft portion of the bolt 45 inserted into the bolt hole 52 (step (2) described later).

The lower metal fitting 50 has a holding part 54 for holding the inner flange 26a of the frame 13a from above. The presser portion 54 is provided on the pedestal portion 53 with a gap in which the inner collar 26 a can be inserted between the presser portion 54 and the pedestal portion 53. The holding portion 54 is formed in a plate shape substantially parallel to the pedestal portion 53 by folding the eaves side end portion of the lower metal fitting 50 into a substantially U shape so that the gap is formed between the holding portion 54 and the pedestal portion 53. The The inner collar 26a of the frame 13a is inserted into the gap between the pedestal 53 and the presser 54 (see FIG. 4).

The presser portion 54 is formed with a convex portion 55 that contacts the upper surface of the inner collar 26a. That is, the convex portion 55 is a protrusion formed on the lower surface of the presser portion 54. The convex portions 55 may be formed at the central portion in the horizontal direction of the presser portion 54, but are preferably formed on both sides in the horizontal direction of the presser portion 54. By pressing the presser portion 54 from the upper surface side, a convex portion 55 protruding downward can be formed. In the presser portion 54, the convex portion 55 contacts the upper surface of the inner collar 26 a and presses the inner collar 26 a against the pedestal portion 53. It is preferable to set the interval between the pedestal portion 53 and the pressing portion 54 so that the interval between the tip of the convex portion 55 and the pedestal portion 53 is approximately the same as the thickness of the inner collar 26a. An example of a suitable interval is 0.95 to 1.05 times the thickness of the inner collar 26a. The distance between the convex portion 55 and the pedestal portion 53 is particularly preferably slightly smaller than the thickness of the inner collar 26a. An example of a particularly suitable distance is 0.95 to less than 1.00 times the thickness of the inner collar 26a. It is.

In the lower metal fitting 50, leg portions 56 are provided on both sides of the presser portion 54 in the lateral direction. The two leg portions 56 have, for example, the same shape and the same dimensions. The leg portion 56 extends from the eaves side end of the pedestal portion 53 toward the eave side and downward, extends below the lower surface of the base portion 51, bends in the middle, and extends substantially parallel to the base portion 51. A portion of the leg portion 56 that extends substantially parallel to the base portion 51 is positioned below the base portion 51 and is substantially on the back side (lower surface) of the top plate portion 35 while being inserted into the through hole 36 of the base metal fitting 32. It is preferable to contact. However, a small gap may exist between the upper surface of the leg portion 56 and the lower surface of the top plate portion 35. For example, when a force (negative pressure) for lifting the solar cell modules 11a and 11b is applied, the leg portion 56 is provided. May be caught on the edge of the through hole 36. That is, the upper surface of the leg portion 56 may contact the lower surface of the top plate portion 35 when negative pressure is generated.

The lower metal fitting 50 has a handle portion 57 formed by bending the ridge side end portion downward. At the time of construction of the solar power generation device 10, when the inner collar 26a of the frame 13a is inserted between the pedestal portion 53 and the holding portion 54, the lower metal fitting 50 is moved to the ridge side. At this time, the handle portion 57 is used. . Since the lower metal fitting 50 can be pulled strongly by using the handle portion 57, it is easy to insert the inner collar 26a and the workability is improved. The handle portion 57 may be formed by bending the ridge side end portion of the lower metal fitting 50 upward. In this case, an upward force is easily applied to the eave side end portion of the lower metal fitting 50. For this reason, the leg part 56 inserted in the through-hole 36 may contact the back side of the top-plate part 35 strongly, and a big force may be required in order to pull the handle part 57. FIG.

In addition, the shape of the lower metal fitting 50 is not limited to the shape illustrated in FIGS. 7 and 8. For example, one leg portion 56 may be formed in the center portion in the horizontal direction of the lower metal fitting 50, and two holding portions 54 may be formed on both sides in the horizontal direction of the leg portion 56 (see FIG. 19 and the like described later). The pressing portion 54 may be formed on one end side in the horizontal direction of the lower metal fitting 50 and the leg portion 56 may be formed on the other end side in the horizontal direction.

9 and 10 are views showing the upper metal fitting 60. FIG.
The upper metal fitting 60 includes a base portion 61 formed in a flat plate shape and two insertion portions (a first insertion portion 63 and a second insertion portion) that are inserted into the outer grooves 24a and 24b of the frames 13a and 13b, respectively. Part 64), base part 61, and connecting parts 68 and 69 for connecting the respective insertion parts. The connection parts 68 and 69 are provided substantially perpendicular to the base part 61 and each insertion part. The base portion 61 is disposed on the base portion 51 of the lower metal fitting 50, and the frame 13b is placed on the base portion 61 (see FIG. 4). In a state where the upper metal fitting 60 is disposed on the lower metal fitting 50, the height of the upper surface of the base portion 61 is substantially the same as the height of the upper surface of the pedestal portion 53.

The upper metal fitting 60 extends to the ridge side beyond the inner flange 26b of the frame 13b (see FIG. 4). The bolt hole 62 is a long hole formed long in the eaves-ridge direction like the bolt hole 52, and is formed at a position where the eave side end portion of the long hole does not overlap the inner flange 26b. By making the bolt hole 62 a long hole, the upper fitting 60 can be pushed toward the eave while the shaft portion of the bolt 45 is inserted into the bolt hole 62 to insert the first insertion portion 63 into the outer groove 24a. it can.

The first insertion part 63 is a part that is inserted into the outer groove 24a of the frame 13a, and extends from the eaves side end of the base part 61 to the eaves side. The first insertion portion 63 is formed in a plate shape that is longer in the lateral direction than the eaves-ridge direction, and is disposed substantially parallel to the base portion 61. The length of the first insertion portion 63 in the eaves-ridge direction is preferably not more than the depth depth D24, more preferably not more than the depth depth D24 and not less than 50% of the depth depth D24. The first insertion portion 63 is preferably inserted into the outer groove 24a until the connecting portion 68 substantially contacts the frame 13a. The bottom plate 25a of the frame 13a is inserted into the gap between the pedestal portion 53 and the first insertion portion 63 (see FIG. 4).

The second insertion part 64 is a part that is inserted into the outer groove 24b of the frame 13b, and extends from the eaves side end of the base part 61 to the side opposite to the first insertion part 63, that is, the ridge side. The second insertion portion 64 is formed in a plate shape that is longer in the horizontal direction than the eaves-ridge direction, and is disposed on the base portion 61 substantially parallel to the base portion 61. The length of the second insertion portion 64 in the eaves ridge direction is preferably the depth depth D24 or less, more preferably the depth depth D24 or less and 50% or more of the depth depth D24, similarly to the first insertion portion 63. It is. The second insertion portion 64 is preferably inserted into the outer groove 24b until the connecting portion 69 substantially contacts the frame 13b.

The second insertion part 64 is provided on the base part 61 with a gap in which the bottom plate 25b of the frame 13b can be inserted between the second insertion part 64 and the base part 61. The second insertion part 64 is formed by folding the eaves side end of the upper metal fitting 60 so that the gap is formed between the second insertion part 64 and the base part 61.

The first insertion portion 63 and the second insertion portion 64 are respectively formed with convex portions 65 and 66 that contact the inner walls of the outer grooves 24a and 24b. The convex portions 65 and 66 may be formed on the upper surface of each insertion portion, but are preferably formed on the lower surface. Convex portions are formed in the respective insertion portions so that the contact areas between the inner walls of the outer grooves 24 a and 24 b and the respective convex portions are larger at the first insertion portion 63 than at the second insertion portion 64. Each of the first insertion portion 63 and the second insertion portion 64 has convex portions 65 and 66 on each side in the lateral direction. The first insertion portion 63 further has a convex portion 65 at the central portion in the horizontal direction, and a total of three convex portions 65 are formed in the first insertion portion 63. Since the solar cell module 11b may be aligned by sliding in the lateral direction after the second insertion portion 64 is inserted into the outer groove 24b, the upper metal fitting can be obtained from the binding force between the lower metal fitting 50 and the frame 13a. It is preferable to reduce the binding force between 60 and the frame 13b. Therefore, it is preferable to form more convex portions 65 than the convex portions 66.

In the first insertion portion 63, the convex portion 65 contacts the upper surface of the bottom plate 25a of the frame 13a and presses the bottom plate 25a against the pedestal portion 53 of the lower metal fitting 50. That is, the bottom plate 25 a is sandwiched from above and below by the pedestal portion 53 of the lower metal fitting 50 and the first insertion portion 63 of the upper metal fitting 60. The distance between the pedestal portion 53 of the lower metal fitting 50 and the first insertion portion 63 of the upper metal fitting 60 is preferably about the same as the thickness of the bottom plate 25 a between the tip of the convex portion 65 and the pedestal portion 53. An example of a suitable interval is 0.95 to 1.05 times the thickness of the bottom plate 25a. The distance between the tip of the convex portion 65 and the pedestal portion 53 is particularly preferably slightly smaller than the thickness of the bottom plate 25a. An example of a particularly suitable distance is 0.95 to less than 1.00 times the thickness of the bottom plate 25a. It is.

In the second insertion portion 64, the convex portion 66 comes into contact with the upper surface of the bottom plate 25b of the frame 13b and presses the bottom plate 25b against the base portion 61. That is, the bottom plate 25 b is sandwiched from above and below by the base portion 61 and the second insertion portion 64. The interval between the base portion 61 and the second insertion portion 64 is such that the distance between the tip of the convex portion 66 and the base portion 61 is approximately the same as the thickness of the bottom plate 25b. It is preferable to set the interval. An example of a suitable distance is 0.95 to 1.05 times the thickness of the bottom plate 25b.

In the upper metal fitting 60, the 1st insertion part 63 is provided in the horizontal direction one side of the base part 61, and the 2nd insertion part 64 is provided in the horizontal direction other side. And the connection part 68 which connects the base part 61 and the 1st insertion part 63, and the connection part 69 which connects the base part 61 and the 2nd insertion part 64 are arrange | positioned along with the horizontal direction. In other words, the first insertion portion 63 and the second insertion portion 64 that extend in opposite directions are provided with their base portions overlapping in the lateral direction. As described above, since the frames 13a and 13b are substantially in contact with the connecting portions 68 and 69, the gap between the solar cell modules 11a and 11b is formed, for example, by connecting the connecting portions 68 and 69 in the lateral direction. 68, 69 (thickness of the upper metal fitting 60). The first insertion part 63 and the second insertion part 64 may be provided apart in the eaves ridge direction, but in that case, a gap corresponding to the distance along the eaves ridge direction of each insertion part is formed between the modules. Will be.

The upper metal fitting 60 has a standing wall portion 67 that extends substantially perpendicular to the base portion 61. The standing wall portion 67 is provided at a position that faces the tip of the inner collar 26b of the frame 13b and that does not hinder the frame 13b from being placed on the upper metal fitting 60. When a force that lifts up and down acts on the solar cell module 11, the frame 13b may try to move to the building side, but the standing wall portion 67 prevents the frame 13b from moving to the building side.

In addition, the shape of the upper metal fitting 60 is not limited to what is shown in FIG.9 and FIG.10. For example, the second insertion part 64 may be formed in the center part in the horizontal direction of the upper metal fitting 60, and two first insertion parts 63 may be formed on both sides in the horizontal direction of the second insertion part 64. Or the 1st insertion part 63 may be formed in the horizontal direction center part of the upper metal fitting 60, and the 2nd insertion part 64 may be formed in the horizontal direction both sides of the 1st insertion part 63 (after-mentioned figure). 21). Further, the upper metal fitting 60 may have a shape that does not have the standing wall portion 67.

FIG. 11 to FIG. 13 show an example of the construction procedure of the solar power generation device 10 having the above configuration.
An example of the construction method of the solar power generation device 10 includes the following steps. The construction procedure of the base plate 30 is as described above.
(1) A step of attaching the lower metal fitting 50 to the base metal fitting 32 (fixed object).
(2) A step of disposing the solar cell module 11a on the lower metal fitting 50 and pressing the inner flange 26a of the module by the lower metal fitting 50.
(3) The upper metal fitting 60 is arranged on the lower metal fitting 50, the first fitting portion 63 of the upper metal fitting 60 is inserted into the outer groove 24a of the solar cell module 11a, and the lower metal fitting 50 and the upper metal fitting 60 are attached to the base metal fitting 32. Fixing step.
(4) The process of arrange | positioning the solar cell module 11b on the upper metal fitting 60, and inserting the 2nd insertion part 64 of the upper metal fitting 60 in the outer groove 24b of the said module.

As shown in FIG. 11, in the step (1), the leg portion 56 of the lower metal fitting 50 is inserted into the through hole 36 of the base metal fitting 32, and the shaft portion of the bolt 45 attached to the guide rail 39 is used as the bolt hole of the lower metal fitting 50. 52. The shaft of the bolt 45 protrudes from the opening 37 and stands on the top plate 35 of the pedestal 33, and the head is hooked on the edge of the opening 37 and held in the guide rail 39.

Subsequently, as shown in FIG. 12, the frame 13 a of the solar cell module 11 a is arranged on the pedestal portion 53 of the lower metal fitting 50. Thereafter, the grip part 57 of the lower metal fitting 50 is pulled to the ridge side until the presser part 54 presses the inner hook 26a of the frame 13a, that is, the position where the inner hook 26a is inserted between the pedestal 53 and the presser part 54. The lower metal fitting 50 is moved to (step (2)). Thereby, the inner collar 26a is clamped by the lower metal fitting 50, and the lower metal fitting 50 is firmly fixed to the frame 13a. At this time, the eaves-side frame 13 (not shown) of the solar cell module 11a is fixed to the upper metal fitting 60 (not shown) already installed on the eaves side from the base metal fitting 32.

Subsequently, as shown in FIG. 13, the upper metal fitting 60 is disposed on the base portion 51 of the lower metal fitting 50, and the first insertion portion 63 is inserted into the outer groove 24a of the solar cell module 11a. Thereby, the upper metal fitting 60 is fixed to the frame 13a. At this time, the shaft portion of the bolt 45 is passed through the bolt hole 62 of the upper metal fitting 60. A nut 46 is attached to the shaft portion of the bolt 45 protruding upward from the bolt hole 62, and the lower metal fitting 50 and the upper metal fitting 60 are fixed to the base metal fitting 32 (step (3)).

Next, the frame 13b of the solar cell module 11b is disposed on the upper metal fitting 60, and the second insertion portion 64 is inserted into the outer groove 24b (step (4)). Thereby, the frame 13 b is fixed to the upper metal fitting 60. At this time, the ridge-side frame 13 (not shown) of the solar cell module 11b is fixed to the lower metal fitting 50 installed on the ridge side from the base metal fitting 32. The binding force between the upper metal fitting 60 and the frame 13b is set to such an extent that the solar cell module 11b can slide in the horizontal direction, for example. For this reason, after inserting the 2nd insertion part 64 in the outer groove 24b, it is possible to slide the solar cell module 11a to a horizontal direction, and to adjust a horizontal position.

The solar power generation apparatus 10 having the above-described configuration can be easily constructed through the above simple steps (1) to (4), and has excellent workability. Moreover, according to the solar power generation device 10, the gap between the solar cell modules 11a and 11b can be reduced to about the thickness of the upper metal fitting 60 (the thickness of the connecting portions 68 and 69), thereby saving space. be able to. For example, many solar cell modules 11 can be installed in a limited installation space.

The above-described embodiment can be appropriately changed in design without departing from the object of the present disclosure.
14 and 15 show a base metal fitting 70 as another example of the embodiment. FIGS. 16 to 25 show a solar power generation apparatus 80 in which the solar cell module 11 is installed on the roof 100 using the gantry frame 90 instead of the base metal fitting, and metal fittings applied to the apparatus.

14 and 15 is different from the above-described base metal fitting 32 in that it has a holding groove 73 as an insertion portion (insertion portion) into which the leg portion 56 of the lower metal fitting 50 is inserted. Other configurations are the same as those of the base metal fitting 32. Similar to the guide rail 39, the holding groove 73 includes an opening 71 formed along the horizontal direction of the top plate portion 35 and a bottom plate 72 provided below the opening 71 along the opening 71. Is done. Since the holding groove 73 is open on both sides in the longitudinal direction (both sides in the lateral direction of the pedestal portion 33), the legs 56 can be inserted into the holding groove 73 from the opening. Therefore, the opening 71 may be formed with a width that allows the base portion of the leg portion 56 to pass. The bottom plate 72 is formed in a substantially L-shaped cross section by providing a space in which the leg portion 56 can be inserted between the bottom plate 72 and connecting the top plate portion 35 and the standing wall portion 34 on the eaves side. The lower metal fitting 50 in which the leg portion 56 is inserted into the holding groove 73 is slidable along the lateral direction in which the holding groove 73 extends. That is, by using the base metal fitting 70, the range in which the lower metal fitting 50 and the upper metal fitting 60 can be attached becomes wider than when the base metal fitting 32 is used.

FIG. 16 is a cross-sectional view illustrating a solar power generation device 80 as another example of the embodiment.
As shown in FIG. 16, the solar power generation device 80 includes a lower metal fitting 110 and an upper metal fitting 120 arranged on the lower metal fitting 110, and the solar cell modules 11a, It is common with the said embodiment by the point attached ranging over 11b. On the other hand, the solar power generation device 80 is different from the above-described embodiment in that the lower metal fitting 110 and the upper metal fitting 120 are fixed to a long pedestal frame 90 disposed on the roof 100.

The solar power generation device 80 includes a bolt 45 for fixing the lower metal fitting 110 and the upper metal fitting 120 to the gantry frame 90. Bolt holes 112 and 122 through which the bolts 45 are inserted are formed in the base portion 111 of the lower metal fitting 110 and the base portion 121 of the upper metal fitting 120, respectively. The bolt holes 112 and 122 are ridge side portions of the respective metal fittings, and are formed on the ridge side from the position where the inner flange 26b of the frame 13b is supported. In order to increase the binding force with the gantry frame 90, the lower metal fitting 110 preferably has legs 116 that are inserted into the through holes 94 formed in the gantry frame 90 and hooked on the gantry frame 90.

The frame 13a of the solar cell module 11a is placed on the lower metal fitting 110, and the frame 13b of the solar cell module 11b is placed on the upper metal fitting 120. The lower metal fitting 110 has a holding portion 114 that holds the inner collar 26a of the frame 13a, and fixes the ridge side end of the solar cell module 11a to the gantry frame 90. The upper metal fitting 120 is disposed on the base portion 111 of the lower metal fitting 110, is attached to both the frames 13a and 13b, and the ridge side end portion of the solar cell module 11a and the eave side end portion of the solar cell module 11b are attached to the frame 90. Secure to. The upper metal fitting 120 has a first insertion portion 123 that is inserted into the outer groove 24a of the frame 13a, and a second insertion portion 124 that is inserted into the outer groove 24b of the frame 13b.

17 and 18 are views showing the gantry frame 90 on which the lower metal fitting 110 is placed.
The gantry frame 90 is disposed on the roof 100 such that the longitudinal direction thereof is along the eaves-ridge direction of the roof 100. The gantry frame 90 has a length that allows a plurality of solar cell modules 11 to be arranged in the eaves-ridge direction. One solar cell module 11 is placed on two gantry frames 90 arranged substantially in parallel with each other at an appropriate interval in the girder direction of the roof 100, for example.

The gantry frame 90 is fixed to the base plate 101 of the roof 100 using an anchor, for example. The anchor has a plate-like fixing portion (not shown) fixed to the base plate 101, and an anchor bolt 96 provided substantially perpendicular to the fixing portion. The anchor bolt 96 protrudes from the through hole formed in the roof material 102 to the front side of the roof material 102, for example. The gantry frame 90 can be fixed to the anchor bolt 96 using nuts 97 and 98.

The gantry frame 90 is a substantially U-shaped member having an upper wall portion 91, a lower wall portion 92, and a side wall portion 93. The upper wall portion 91 and the lower wall portion 92 have substantially the same length in both the longitudinal direction and the width direction, and are disposed substantially parallel to each other. The side wall portion 93 is a portion connecting the upper wall portion 91 and the lower wall portion 92, and is disposed substantially perpendicular to the upper wall portion 91 and the lower wall portion 92. In addition, the shape, arrangement | positioning, etc. of an elongate base frame are not specifically limited, For example, you may arrange | position the said frame so that the opening part of the base frame 90 may face down.

The upper wall portion 91 is a portion on which the solar cell module 11 is placed, and is a portion to which the lower metal fitting 110 and the upper metal fitting 120 are attached. A through hole 94 into which the leg portion 116 of the lower metal fitting 110 is inserted and a bolt hole 95 into which the bolt 45 is inserted are formed in the upper wall portion 91. The through hole 94 and the bolt hole 95 are formed, for example, in the center in the width direction along the longitudinal direction of the gantry frame 90. A through hole (not shown) through which the anchor bolt 96 can be inserted is formed in the lower wall portion 92. The base wall 90 is fixed to the anchor bolt 96 by placing the lower wall portion 92 on the nut 97 attached to the anchor bolt 96 and attaching the nut 98 to the bolt from above the lower wall portion 92.

19 and 20 are views showing the lower metal fitting 110. FIG.
The lower metal fitting 110 includes a base portion 111 formed in a flat plate shape and a pedestal portion 113 on which the frame 13a is placed. The pedestal portion 113 is formed higher than the base portion 111, and the height of the upper surface thereof is formed to be substantially the same as the height of the upper surface of the base portion 121 of the upper metal fitting 120 disposed on the base portion 111. Is preferable. Accordingly, the height of the upper surface of the frame 13a placed on the pedestal portion 113 and the height of the upper surface of the frame 13b placed on the upper metal fitting 120 are substantially the same (see FIG. 16).

The bolt hole 112 is a long hole extending in the eaves-ridge direction, and is formed at a position that does not overlap the inner flange 26b. By making the bolt hole 112 a long hole, the degree of freedom of arrangement of the lower metal fitting 110 with respect to the fastening position of the bolt 45 of the gantry frame 90 can be increased, and the shaft portion of the bolt 45 is inserted into the bolt hole 112. The lower metal fitting 110 can be moved to the building side. The lower metal fitting 110 preferably has a handle 117 formed by bending the ridge side end upward. When inserting the inner collar 26a of the frame 13a between the pedestal portion 113 and the presser portion 114 during construction of the solar power generation device 80, the lower bracket 110 is moved to the ridge side. At this time, the handle portion 117 is used. .

The holding part 114 is provided on the pedestal part 113 with a gap in which the inner collar 26a can be inserted between the holding part 114 and the pedestal part 113. The holding portion 114 is formed in a plate shape substantially parallel to the pedestal portion 113 by folding the eave side end portion of the lower metal fitting 110 into a substantially U shape. The presser part 114 is preferably formed with a convex part 115 that contacts the upper surface of the inner collar 26a. It is preferable that the interval between the pedestal portion 113 and the presser portion 114 is set so that the interval between the tip of the convex portion 115 and the pedestal portion 113 is approximately the same as the thickness of the inner collar 26a. An example of a suitable interval is 0.95 to 1.05 times, or 0.95 to 1.00 times the thickness of the inner collar 26a.

Similarly to the presser portion 114, the leg portion 116 is formed in a plate shape substantially parallel to the pedestal portion 113 by folding the eaves side end portion of the lower metal fitting 110 into a substantially U shape. However, the leg portion 116 is folded back to the side opposite to the presser portion 114, that is, the lower side of the pedestal portion 113. The distal end portion of the leg portion 116 is positioned below the lower surface of the base portion 111 and substantially contacts the back side (lower surface) of the upper wall portion 91, for example. Alternatively, there may be a small gap between the upper surface of the leg portion 116 and the lower surface of the upper wall portion 91, and the leg portion 116 may contact the upper wall portion 91 when negative pressure is applied to the solar cell module 11. .

In the present embodiment, two pressing portions 114 are provided on both lateral sides of the lower metal fitting 110, and one leg portion 116 is provided between the pressing portions 114. The lateral lengths of the presser portions 114 are different from each other, but may have the same dimensions. One protrusion 115 is formed on each presser 114. Further, the handle portion 117 is formed separately on both lateral sides of the lower metal fitting 110 in order to prevent interference with the nut 46. The lateral lengths of the respective handle portions 117 are different from each other, but may have the same dimensions.

21 and 22 are diagrams showing the upper metal fitting 120. FIG.
The upper metal fitting 120 includes a base portion 121 formed in a flat plate shape and two insertion portions (a first insertion portion 123 and a second insertion portion) that are inserted into the outer grooves 24a and 24b of the frames 13a and 13b, respectively. Part 124). In the example shown in FIG. 21, a substantially perfect circular bolt hole 122 is formed in the base portion 121. The bolt hole 122 is formed at a position that does not overlap with the inner flange 26 b and that corresponds to the bolt hole 112 of the lower metal fitting 110.

The first insertion part 123 extends from the eaves side end of the base part 121 to the eaves side, and is formed in a plate shape substantially parallel to the base part 121. The length of the first insertion portion 123 in the eaves-ridge direction is preferably not more than the depth depth D24, more preferably not more than the depth depth D24 and not less than 50% of the depth depth D24. It is preferable that a convex portion 125 that contacts the bottom plate 25a of the frame 13a is formed on the lower surface of the first insertion portion 123. The bottom plate 25a is disposed between the first insertion portion 123 and the pedestal portion 113 of the lower metal fitting 110 (see FIG. 16). It is preferable that the 1st insertion part 123 is provided so that the space | interval of the front-end | tip of the convex part 125 and the base part 113 of the lower metal fitting 110 may become comparable as the thickness of the baseplate 25a. A suitable example of the interval is 0.95 to 1.05 times, or 0.95 to 1.00 times the thickness of the bottom plate 25a.

The second insertion part 124 extends from the eaves side end of the base part 121 to the opposite side of the first insertion part 123, that is, the ridge side, and is formed in a plate shape substantially parallel to the base part 121 on the base part 121. The The second insertion portion 124 is formed by folding back the eaves side end portion of the upper metal member 120 so that a gap is formed between the base portion 121 and the bottom plate 25b of the frame 13b. The length of the second insertion portion 124 in the eaves ridge direction is preferably the depth depth D24 or less, more preferably the depth depth D24 or less and 50% of the depth depth D24, similarly to the first insertion portion 123. That's it. The second insertion portion 124 is preferably provided so that the distance between the tip of the convex portion 126 and the base portion 121 is approximately the same as the thickness of the bottom plate 25b. A suitable example of the interval is 0.95 to 1.05 times, or 0.95 to 1.00 times the thickness of the bottom plate 25b.

In the present embodiment, two second insertion portions 124 are provided on both lateral sides of the upper metal member 120, and one first insertion portion 123 is provided between each second insertion portion 124. . The lateral lengths of the second insertion portions 124 are different from each other, but may have the same dimensions. One convex portion 126 is formed on each second insertion portion 124. The connecting portion 128 that connects the base portion 121 and the first insertion portion 123 and the connecting portion 129 that connects the base portion 121 and the second insertion portion 124 are arranged side by side like the upper metal fitting 60. In addition, the connecting portion 128 is located closer to the eaves of the upper metal member 120 than the connecting portion 129.

The upper metal fitting 120 has a standing wall portion 127 that extends substantially perpendicular to the base portion 121. The upright wall portion 127 prevents the solar cell module 11b from moving toward the ridge side. The standing wall portion 127 is provided at a position that faces the tip of the inner collar 26b of the frame 13b and that does not hinder the frame 13b from being placed on the upper metal fitting 120 (see FIG. 16).

FIG. 23 is a cross-sectional view showing the eaves side end of the solar power generation device 80 and the vicinity thereof.
The solar power generation device 80 preferably includes a cover 160 attached to the eaves side end of the gantry frame 90. The cover 160 is attached to the gantry frame 90 using the lower metal fitting 140 for the eaves side end. The cover 160 may be provided along the frame 13 of the solar cell module 11 or may be provided only at the eaves side end of the gantry frame 90. In either case, the cover 160 is attached to the gantry frame 90 using the lower metal fitting 140 for the eaves side end.

The cover 160 includes, for example, a cover main body 161 and a panel portion 162 extending from the main body. In the example shown in FIG. 23, the cover body 161 is disposed on the upper wall portion 91 in the vicinity of the eaves side end portion of the solar cell module 11, and the panel portion 162 is disposed to cover the opening portion of the eaves side end portion of the gantry frame 90. Has been. That is, the panel portion 162 hides the opening portion of the gantry frame 90. The eaves side end upper metal fitting 150 disposed on the eaves side end lower metal fitting 140 has the same structure as the upper metal fitting 120 except that the first insertion fitting portion 123 is not provided, for example.

The cover 160 has grooves 163 and 164 used for fixing to the eaves side end lower metal fitting 140. The cover main body 161 has, for example, a hollow portion having a substantially prismatic shape (a prismatic portion) and a flange portion that is erected on the lower surface of the prismatic portion and has a substantially L-shaped cross section. In the example shown in FIG. 23, a groove portion 163 is formed between the lower surface of the prismatic portion and the flange portion, and a portion close to the panel portion 162 on the lower surface of the prismatic portion is recessed upward to form a groove portion 164. . The eaves side end lower metal fitting 140 has insertion portions 144 and 145 which are inserted into the groove portions 163 and 164 of the cover 160, respectively, instead of the presser portion 114.

The solar power generation device 80 is preferably provided with a steady rest 170 in order to increase the binding force between the cover 160 and the gantry frame 90. The steady brace 170 is a plate-like bracket whose lower part is bent, and is fixed to the cover main body 161 using screws 171, and the upper wall portion of the gantry frame 90 between the cover main body 161 and the solar cell module 11. It is attached substantially perpendicular to 91. The lower part of the steady rest 170 is inserted into a through-hole 148 formed in the eave-side end lower fitting 140.

24 and 25 are views showing the eaves side end lower metal fitting 140. FIG.
Similar to the lower metal fitting 110, the eaves side end lower metal fitting 140 includes a flat plate-like base portion 141 in which a bolt hole 142 is formed and a pedestal portion 143 formed higher than the base portion 141. A grip portion 147 is formed at the ridge side end of the base portion 141. The cover body 161 is placed on the pedestal portion 143. In the example shown in FIG. 24, two leg portions 146 are provided on both lateral sides of the eaves side end lower metal fitting 140, and two insertion portions 144 and one insertion portion are provided between the leg portions 146. 145 is provided.

The insertion portion 144 is a portion that is inserted into the groove portion 163 of the cover 160 as described above, and is formed by folding the eave side end portion of the metal fitting to the side opposite to the leg portion 146. The insertion part 145 is a part that is inserted into the groove part 164 of the cover 160 and is formed by bending the eaves side end of the metal fitting upward. Further, the eaves side end lower metal fitting 140 is formed with a through-hole 148 into which the steady metal fitting 170 is inserted.

FIG. 26 and FIG. 27 are diagrams showing modifications of the gantry frame 90 and the lower metal fitting 110. Each of the forms illustrated in FIGS. 26 and 27 contributes to improvement of workability and prevention of construction mistakes.

In the gantry frame 90x illustrated in FIG. 26, the bolt hole 95x (frame side bolt hole) through which the bolt 45 is inserted is one end side in the width direction of the frame (side wall portion 93 side, opposite to the side wall portion 93) on the upper wall portion 91x. It may be any of these). The bolt hole 95x is not formed on the imaginary line X passing through the center in the width direction of the gantry frame 90x, but is formed near an intermediate position between the imaginary line X and one end in the width direction of the frame. In the example shown in FIG. 26, the through holes 94 are formed symmetrically with respect to the virtual line X, but the through holes 94 are formed so as to be greatly biased to one side in the width direction of the gantry frame 90x, like the bolt holes 95x. May be.

In the base portion 111x of the lower metal fitting 110x illustrated in FIG. 26, a bolt hole 112x is formed so as to be largely deviated toward one end side in the horizontal direction of the metal fitting. The bolt hole 112x is not formed on the imaginary line Y passing through the center in the width direction of the lower metal fitting 110x, and in the vicinity of an intermediate position between the imaginary line Y and one end in the horizontal direction of the metal fitting, similarly to the bolt hole 95x of the gantry frame 90x. Is formed. By unevenly distributing the bolt holes 95x and 112x in this manner, the lower metal fitting 110x cannot be attached in the reverse direction on the gantry frame 90x in the form illustrated in FIG. Thereby, the construction mistake in which the lower metal fitting 110x is attached in the reverse direction can be prevented. Moreover, according to this form, since the correct direction of the lower metal fitting 110x can be confirmed easily, workability improves.

On the upper surface of the gantry frame 90y illustrated in FIG. 27 (the upper surface of the upper wall portion 91y), a frame-side inscription 99 extending substantially linearly along the longitudinal direction of the frame has one end in the width direction (side wall portion 93 side, side wall (It may be on the opposite side of the portion 93). The frame side marking 99 is formed in the vicinity of an intermediate position between the virtual line X and one end in the width direction of the frame. The frame side marking 99 may be formed over the entire length of the gantry frame 90y, or may be formed only in the vicinity of the installation position of the lower metal fitting 110y.

27. On the upper surface of the lower metal fitting 110y illustrated in FIG. 27, a stamp 118 extending substantially linearly along the vertical direction of the metal fitting is formed so as to be largely biased toward one end in the horizontal direction. Similar to the frame-side marking 99 of the gantry frame 90y, the marking 118 is formed near the intermediate position between the virtual line Y and one end in the lateral direction of the metal fitting in the base portion 111y. In the form illustrated in FIG. 27, the lower metal fitting 110y is arranged on the gantry frame 90y in a state where the inscription 118 is superimposed on the frame side inscription 99. In other words, each marking is formed so that the lower metal fitting 110y can be installed on the gantry frame 90y only in a state where the respective markings match. Thereby, the construction mistake in which the lower metal fitting 110y is attached in the reverse direction can be prevented, and the workability is improved. A line display may be drawn instead of each marking.

10, 80 solar power generation device, 11, 11a, 11b solar cell module, 12, 12a, 12b solar cell panel, 13, 13a, 13b frame, 20 main body, 21, 23 flange, 22, 22a, 22b inner groove 24, 24a, 24b outer groove, 25, 25a, 25b bottom plate, 26, 26a, 26b inner wall, 30, 30a, 30b, 30c base plate, 31 holding part, 32 base metal fittings, 33 base part, 34 standing wall part, 35 Top plate part, 36, 94, 148 through hole, 37 opening part, 38 bottom plate, 39 guide rail, 40, 41 leg part, 42, 43 screw hole, 44 claw part, 45 bolt, 46, 97, 98 nut, 47 Wood screw, 50, 110, 110x, 110y Lower bracket, 51, 111, 111x, 111y, 141 Base part, 52, 62, 95, 95x, 112, 112x, 122, 142, 152 bolt hole, 53, 113, 143 base part, 54, 114 presser part, 55, 65, 66, 115, 125, 126 convex part , 56, 116, 146, leg part, 57, 117, 147 handle part, 60, 120 upper metal fitting, 61, 121, 151 base part, 63, 123 first insertion part, 64, 124, 154 second insertion part , 67, 127, 157 Standing wall part, 68, 69, 128, 129 connecting part, 70 base bracket, 71 opening part, 72 bottom plate, 73 holding groove, 90, 90x, 90y frame, 91, 91x, 91y upper wall part , 92 Lower wall part, 93 Side wall part, 96 Anchor bolt, 99 Frame side stamp, 100 Roof, 101 Base plate, 102 Roof , 118 engraving, 140 eaves side end lower metal fittings, 144, 145 insertion part, 150 eaves side end upper metal fittings, 160 cover, 161 cover body, 162 panel part, 163, 164 groove part, 170 steady rest metal fitting, 171 screw, X, Y virtual line

Claims (11)

A first solar cell module having a first solar cell panel and a first frame provided on a peripheral portion of the panel, and installed on the eaves side of the roof;
A second solar cell module having a second solar cell panel and a second frame provided on the peripheral edge of the panel, and being arranged adjacent to the ridge side of the first solar cell module;
A solar power generation device comprising:
Each of the frames includes an inner groove that accommodates a peripheral portion of each solar cell panel, an outer groove provided on the opposite side of each solar cell panel, and an inner flange that protrudes inside each solar cell module. Have
A lower metal fitting for holding the inner flange of the first frame;
An upper metal fitting that is disposed on the lower metal fitting and has a first insertion part that is inserted into the outer groove of the first frame and a second insertion part that is inserted into the outer groove of the second frame. When,
A solar power generation device comprising: A base metal fitting fixed to the roof base plate, or a long pedestal frame arranged on the roof,
The solar power generation apparatus according to claim 1, wherein the lower metal fitting and the upper metal fitting are fixed to the base metal fitting or the mount frame. A bolt for fixing the lower metal fitting and the upper metal fitting to the base metal fitting or the frame;
The lower metal fitting and the upper metal fitting each have a bolt hole through which the bolt is inserted,
3. The photovoltaic power generation apparatus according to claim 2, wherein each of the bolt holes is formed on the ridge side of a position where the inner frame of the second frame is supported. The lower metal fitting has a leg that is hooked on the base metal fitting or the gantry frame,
The solar power generation apparatus according to claim 2 or 3, wherein the base metal fitting or the gantry frame has an insertion portion into which the leg portion is inserted. Each insertion part of the upper metal fitting is formed with a convex part that contacts the inner wall of the outer groove,
The solar power generation device according to any one of claims 1 to 4, wherein a contact area between the inner wall of the outer groove and the convex portion is larger in the first insertion portion than in the second insertion portion. The lower metal fitting has a pedestal portion on which the first frame is placed,
The photovoltaic power generator according to any one of claims 1 to 5, wherein a height of an upper surface of the pedestal portion is substantially the same as a height of an upper surface of the upper metal fitting on which the second frame is placed. The solar power generation device according to claim 6, wherein the bottom plate of the first frame is disposed between the pedestal portion of the lower metal fitting and the first insertion portion of the upper metal fitting. The bolt hole is formed to be biased toward one end side in the lateral direction of the lower metal fitting,
The photovoltaic power generation apparatus according to claim 3, wherein the gantry frame has a frame-side bolt hole formed so as to be biased toward one end side in the width direction of the frame and through which the bolt is inserted. On the upper surface of the lower metal fitting, a stamp extending in a substantially linear shape along the vertical direction of the metal fitting is formed to be biased toward one end in the horizontal direction,
On the upper surface of the gantry frame, a frame-side inscription extending substantially linearly along the longitudinal direction of the frame is formed to be biased toward one end in the width direction,
The photovoltaic power generation apparatus according to any one of claims 2 to 4, wherein the lower metal fitting is disposed on the gantry frame in a state where the inscription is overlapped on the inscription on the frame side. 10. The upper metal fitting according to any one of claims 1 to 9, wherein the upper metal fitting has a standing wall portion that extends substantially perpendicular to the base portion and is provided at a position facing the tip of the inner collar of the second frame. The solar power generation device described. A solar power generation apparatus construction method according to any one of claims 1 to 10,
Attaching the lower bracket to a fixed object;
Disposing the first solar cell module on the lower metal fitting, and pressing the inner flange of the module by the lower metal fitting;
The step of arranging the upper metal fitting on the lower metal fitting, inserting the first insertion portion of the upper metal fitting into the outer groove of the first solar cell module, and fixing the metal fitting to the fixed object. When,
Placing the second solar cell module on the upper metal fitting, and inserting the second insertion part of the upper metal fitting into the outer groove of the module;
The construction method of the solar power generation device provided with.

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