JP6935305B2 - Reinforcing bracket and stand kit for solar cell module - Google Patents

Description

The present invention relates to a reinforcing metal fitting attached to a frame for installing a solar cell module. The present invention also relates to a gantry kit for a solar cell module provided with the reinforcing metal fittings.

When the solar cell module is installed on the flat roof, the solar cell module is fixed to the pedestal. In a heavy snow area, the gantry is deformed by the load of snow on the solar cell module, which may deform the solar cell module and further cause damage such as cracking in the solar cell.

As shown in FIGS. 7A and 7B, Patent Document 1 describes a reinforcing material 100 for preventing deformation of the gantry 110. 7A is a front view, and FIG. 7B is a cross-sectional view taken along the line including the line 7B-7B of FIG. 7A. The gantry 110 has a web 115 along the vertical direction, a first flange 111 and a second flange 112 extending from the lower and upper ends of the web 115, and a first flange 111 and a second flange 112 protruding from the respective tips. It is a C-shaped steel (slot-shaped steel) having one lip 113 and a second lip 114. The reinforcing material 100 includes a support plate 105, and a lower plate 101 and an upper plate 102 extending from both ends of the support plate 105 at right angles to the support plate 105, and has a "U" -shaped side view shape (see FIG. 7A). ). The reinforcing material 100 is formed in the groove of the gantry 110 so that the lower plate 101 is in surface contact with the first flange 111, the upper plate 102 is in surface contact with the second flange 112, and the support plate 105 is perpendicular to the web 115. Will be inserted. The first flange 111 and the lower plate 101 are connected and fixed by the first bolt 131a and the first nut 132a, and the mounting member 120 that supports the solar cell module (not shown), the second flange 112, and the upper plate 102 are the first. It is connected and fixed by a 2-bolt 131b and a second nut 132b. The load of the solar cell module (not shown) is applied to the second flange 112 via the mounting member 120. The reinforcing member 100 provided at the position of the mounting member 120 supports the load and prevents the second flange 112 from being deformed downward.

Japanese Unexamined Patent Publication No. 2015-105537

The reinforcing material 100 has a problem that the attachment work to the gantry 110 is complicated. In order to arrange the reinforcing material 100 at a predetermined position in the groove of the gantry 110, the reinforcing material 100 is inserted into the groove of the gantry 110 from one end in the longitudinal direction of the gantry 110 with the support plate 105 upright, and is desired. It must be translated in the groove to the desired position. Since the second bolt 131b and the second nut 132b hinder the movement of the reinforcing material 100 in the groove, it is difficult to retrofit the reinforcing material 100 to the gantry 110 to which the solar cell module is already mounted via the mounting member 120. be.

An object of the present invention is to solve the above problems, to reinforce the gantry so that the gantry is not deformed by a load such as snow cover, and to simplify the work for reinforcing the gantry.

The reinforcing metal fitting of the present invention is attached to a frame for a solar cell module including a first flange and a second flange facing each other and a web connecting the first flange and the second flange. The reinforcing metal fitting includes a bottom plate and a support plate. The bottom plate and the support plate are connected at right angles to each other at their respective ends. The reinforcing metal fitting is attached to the gantry so that the bottom plate is in surface contact with the one flange and the upper end of the support plate is in line contact with the second flange.

The reinforcing metal fitting of the present invention can reinforce the gantry so that the gantry is not deformed by a load such as snow cover.

Further, the reinforcing metal fitting of the present invention can be attached to the gantry with an extremely simple operation. Even if the solar cell module is already attached to the gantry, the reinforcing metal fittings can be easily retrofitted to the gantry. Therefore, the gantry can be reinforced with a simple operation.

FIG. 1A is a perspective view of a reinforcing metal fitting according to an embodiment of the present invention. FIG. 1B is a perspective view seen from the back surface side of the reinforcing metal fitting. FIG. 1C is a side view of the reinforcing metal fitting. FIG. 1D is an enlarged cross-sectional view of the upper end of the reinforcing metal fitting and the portion in the vicinity thereof. FIG. 2 is a perspective view of the solar cell module installed on the gantry. FIG. 3 is an enlarged perspective view of a portion 3 of FIG. FIG. 4 is a cross-sectional view taken along a plane including lines 4-4 of FIG. FIG. 5 is a front view showing a method of attaching the reinforcing metal fitting according to the embodiment of the present invention to the gantry. FIG. 6 is a cross-sectional view of a reinforcing metal fitting according to another embodiment of the present invention. FIG. 7A is a front view showing a conventional reinforcing material for reinforcing the frame for the solar cell module. FIG. 7B is a cross-sectional view taken along the line including the line 7B-7B of FIG. 7A.

Hereinafter, the present invention will be described in detail with reference to suitable embodiments. However, it goes without saying that the present invention is not limited to the following embodiments. For convenience of explanation, each figure referred to in the following description is a simplified representation of the main members constituting the embodiment of the present invention. Therefore, the present invention may include any member not shown in each of the following figures. Further, within the scope of the present invention, each member shown in each of the following figures may be changed or omitted.

FIG. 1A is a perspective view of the reinforcing metal fitting 1 according to the embodiment of the present invention. FIG. 1B is a perspective view of the reinforcing metal fitting 1 as viewed from the back surface side, and FIG. 1C is a side view of the reinforcing metal fitting 1. The reinforcing metal fitting 1 includes a bottom plate 11 and a support plate 15. The bottom plate 11 and the support plate 15 are both substantially rectangular flat thin plates. One side of the bottom plate 11 and one side of the support plate 15 are connected by a bent portion 16 along a straight line so that the bottom plate 11 and the support plate 15 form a right angle. Two reinforcing ribs 16a are provided in the bent portion 16 so as to divide the bent portion 16. When viewed along the direction parallel to the bottom plate 11 and the support plate 15, the reinforcing metal fitting 1 has an L-shape (see FIG. 1C). An opening (through hole) 14 penetrating the bottom plate 11 is provided at substantially the center of the bottom plate 11. FIG. 1D is an enlarged cross-sectional view of a portion including the upper end 15a of the support plate 15 along the surface (the surface perpendicular to both the bottom plate 11 and the support plate 15) including the line 1D-1D of FIG. 1A. A chamfer 15c is formed on the upper end 15a of the support plate 15 so as to cut off a corner portion on the upper end 15a side of the main surface of the front and back surfaces of the support plate 15. In FIG. 1D, the chamfer 15c is formed of a smooth curved surface (a part of a cylindrical surface) so as to have an arcuate cross section, but the shape of the chamfer 15c is not limited to this, and for example, the front and back surfaces of the support plate 15 are mainly It may be composed of inclined surfaces that are inclined with respect to each surface.

The reinforcing metal fitting 1 is manufactured, for example, by pressing a flat thin metal plate material. The material of the reinforcing metal fitting 1 is not limited, but a plated steel plate (for example, a hot-dip zinc-plated steel plate ZAM (registered trademark) manufactured by Nissin Steel Co., Ltd.) or a stainless steel plate is used. Since the reinforcing metal fitting 1 has a very simple structure, it can be easily and inexpensively manufactured.

FIG. 2 is a perspective view of the solar cell module 40 installed on the gantry 30. In the example shown in FIG. 2, the three pedestals 30 form a lattice shape on the two vertical rails 38 made of H-shaped steel having an "H" -shaped cross section. It is placed and fixed like this. Four rectangular solar cell modules 40 are fixed on the gantry 30 by using a mounting member 45. By fixing the vertical rail 38 to the flat roof, the solar cell module 40 is installed substantially horizontally on the flat roof.

FIG. 3 is an enlarged perspective view of a portion 3 of FIG. FIG. 4 is a cross-sectional view taken along a plane including lines 4-4 of FIG. As shown in FIG. 4, the gantry 30 includes a web 35 along the vertical direction, a first flange 31 and a second flange 32 extending from the lower end and the upper end of the web 35 to the same side, and a second flange 32. It has a lip 33 extending downward from the tip of the web 35 (the end opposite to the web 35) and has a "U" -shaped (or "U" -shaped) cross section as a whole. The first flange 31, the second flange 32, the lip 33, and the web 35 are all flat thin plates. The first flange 31 and the second flange 32 are perpendicular to the web 35, and the lip 33 is perpendicular to the second flange 32. The gantry 30 includes a groove 36 (see FIG. 3) surrounded by the web 35 and the first and second flanges 31, 32, and the groove 36 extends along the longitudinal direction of the gantry 30. The gantry 30 may be, for example, channel steel. As shown in FIG. 3, the first flange 31 is provided with through holes 34 at a constant pitch along the longitudinal direction of the gantry 30. The gantry 30 is fixed on the vertical rail 38 by bringing the first flange 31 into surface contact with the upper surface of the vertical rail 38 and inserting a bolt (not shown) into the through hole 34.

As shown in FIG. 4, the solar cell module 40 includes a rectangular thin plate-shaped solar cell 41 and frame members 43 attached to four sides of the cell 41 so as to surround the cell 41. The mounting member 45 includes a first member 46 and a second member 47. The first member 46 and the second member 47 are placed on the second flange 32 while holding the frame member 43. The bolt 48 penetrates the first and second members 46 and 47 and fixes them to the second flange 32 of the gantry 30. Further, the screw screw 49 penetrates the second member 47 and fixes the second member 47 to the web 35. Thus, the solar cell module 40 is fixed and held on the upper surface of the second flange 32. The bolt 48 and the screw screw 49 penetrate the second flange 32 and the web 35, respectively, and their tips project into the groove 36 of the gantry 30.

As shown in FIG. 2, the reinforcing metal fitting 1 is mounted in the groove 36 of the gantry 30. As shown in FIGS. 3 and 4, in the reinforcing metal fitting 1, the bottom plate 11 is in surface contact with the first flange 31, and the upper end 15a (see FIG. 1A) of the support plate 15 is lined with the second flange 32. They are arranged in the groove 36 of the gantry 30 so as to come into contact with each other. The bolt 18 penetrates the opening 14 of the bottom plate 11 and the through hole 34 of the first flange 31 in order, and is screwed into the nut 19. As a result, the reinforcing metal fitting 1 is firmly positioned and fixed to the gantry 30. Since the support plate 15 is perpendicular to the bottom plate 11, the support plate 15 is perpendicular to the first flange 31.

When snow is piled up on the solar cell module 40, the load of the snowfall acts to displace the second flange 32 downward through the mounting member 45. However, in the present embodiment, the reinforcing metal fitting 1 is provided between the first flange 31 and the second flange 32. In the reinforcing metal fitting 1, the upper end 15a of the support plate 15 comes into contact with the second flange 32, and the bottom plate 11 comes into contact with the first flange 31, thereby preventing the second flange 32 from being displaced downward and supporting the snow load. Since the support plate 15 is perpendicular to the first and second flanges 31, 32, it resists a strong snow load without buckling. Therefore, the reinforcing metal fitting 1 reinforces the gantry 30 so that the gantry 30 is not deformed by a load such as snow cover. Therefore, it is possible to prevent the solar cell module 40 from being deformed due to the deformation of the second flange 32, and further to prevent an accident such as the solar cell module 40 falling off or the solar cell 41 being cracked.

A method of attaching the reinforcing metal fitting 1 to the gantry 30 will be described with reference to FIG. With the support plate 15 slightly tilted in the vertical direction, the reinforcing metal fitting 1 is passed through the opening between the first flange 31 and the lip 33 into the groove 36 (see FIG. 3) of the gantry 30. insert. Then, with the bent portion 16 in contact with the first flange 31, the reinforcing metal fitting 1 is rotated in the direction of arrow A so that the bottom plate 11 comes into surface contact with the first flange 31 and the support plate 15 stands upright. .. After that, the reinforcing metal fitting 1 is fixed to the first flange 31 with bolts 18 and nuts 19 (see FIGS. 3 and 4). The support plate 15 is perpendicular to the web 35. Therefore, the direction in which the upper end 15a of the support plate 15 makes line contact with the second flange 32 is perpendicular to the web 35.

Since the conventional reinforcing material 100 (see FIGS. 7A and 7B) has a "U" -shaped side view shape, the reinforcing material 100 changes from an inclined state to an upright state in the groove of the gantry 110. Cannot be rotated. Therefore, in order to install the reinforcing material 100 on the gantry 110, the reinforcing material 100 is inserted into the groove from one end of the gantry 110 with the support plate 105 upright, and is translated in the groove to a desired position. I need to let you. When the reinforcing material 100 is to be installed in the central portion of the long frame 110, it is necessary to move the reinforcing material 100 over a long distance. If the solar cell module is already attached to the gantry 110, the second bolt 131b and the second nut 132b prevent the reinforcing member 100 from moving. Since the reinforcing member 100 is configured to fix the upper plate 102 to the second flange 112 by using the second bolt 131b and the second nut 132b, the mounting member 120 has already been configured to fix the second bolt 131b and the second nut. When the second flange 112 is installed using the 132b, it is necessary to remove the second bolt 131b and the second nut 132b. Further, when the second flange 112 is lowered due to the load of the solar cell module and the distance between the first flange 111 and the second flange 112 is narrower than the standard value, it is difficult to move the reinforcing member 100. As described above, the conventional reinforcing member 100 is complicated to attach to the gantry 110. In particular, in order to retrofit the reinforcing member 100 to the gantry 110 to which the solar cell module has already been mounted via the mounting member 120, the work becomes very complicated.

On the other hand, since the reinforcing metal fitting 1 of the present embodiment has an L-shaped side view shape (see FIG. 1C), it is rotated in the groove 36 of the gantry 30 as shown in FIG. Therefore, at an arbitrary position of the gantry 30 to which the reinforcing metal fitting 1 is to be attached, the reinforcing metal fitting 1 is inserted into the groove 36 through the opening between the first flange 31 and the lip 33, and then reinforced. The metal fitting 1 may be rotated. Unlike the conventional reinforcing member 100, it is not necessary to move the reinforcing metal fitting 1 in the groove 36 along the longitudinal direction of the gantry 30 while the support plate 15 is upright. When the solar cell module 40 is already installed on the gantry 30, the bolt 48 and the screw screw 49 project into the groove 36 as shown in FIG. Even in such a case, the reinforcing metal fitting 1 is installed at a desired position without removing the bolt 48 and the screw screw 49. Unlike the conventional reinforcing material 100, in the present embodiment, the support plate 15 and the second flange 32 are merely in contact with each other in the vertical direction. It is not necessary to remove the bolt 48 and the screw screw 49 fixing the member 45. Even if the second flange 32 is lowered by the load of the solar cell module 40 and the distance between the first flange 31 and the second flange 32 is narrower than the standard value, the vicinity of the upper end 15a of the support plate 15 is beaten with a hammer or the like. While doing so, the support plate 15 can be rotated in the direction of arrow A. As described above, the reinforcing metal fitting 1 of the present embodiment is attached to the gantry 30 with an extremely simple operation as compared with the conventional reinforcing material 100. Even when the solar cell module 40 is already attached to the gantry 30, the reinforcing metal fitting 1 is easily retrofitted to the gantry 30.

The chamfer 15c (see FIG. 1D) provided at the upper end 15a of the support plate 15 reduces the possibility that the tip 15a of the support plate 15 collides with the second flange 32 when the reinforcing metal fitting 1 is rotated (see FIG. 5). At the same time, it is advantageous to reduce the gap between the upper end 15a and the second flange 32 when the reinforcing metal fitting 1 is attached to the gantry 30. The chamfer 15c may be formed only at the corner portion on the upper end 15a side of the surface of the support plate 15 on the bottom plate 11 side. This is because the corner portion may collide with the second flange 32 when the reinforcing metal fitting 1 is rotated. In the present invention, the chamfering 15c can be omitted.

Through holes 34 are provided in the first flange 31 of the gantry 30 at a constant pitch. Therefore, the reinforcing metal fitting 1 is installed at the position of the arbitrary through hole 34. For example, in a state where the solar cell module 40 is already installed on the flat roof via the vertical rail 38 and the gantry 30, the reinforcing metal fitting 1 is installed even at a position where the downward deformation of the second flange 32 is relatively large. Will be done. As a result, the gantry 30 is effectively reinforced even with a small number of reinforcing metal fittings 1. However, in the present invention, the through hole 34 may not be provided in advance in the first flange 31. In this case, a through hole 34 is formed at a position where the reinforcing metal fitting 1 is to be installed.

The gantry 30 of the present embodiment is not provided with a lip corresponding to the first lip 113 (see FIGS. 7A and 7B) provided on the conventional gantry 110. Therefore, the opening leading to the groove 36 becomes wide, and the reinforcing metal fitting 1 can be easily inserted. However, the gantry of the present invention is not limited to the above embodiment, and a lip similar to the first lip 113 may be provided at the tip of the first flange 31. Alternatively, the gantry of the present invention may not be provided with the lip 33. In general, providing a lip at the tip of the first and second flanges 31, 32 is advantageous for improving the strength of the first and second flanges 31, 32. The gantry 30 of the present embodiment in which the lip 33 is provided on the second flange 32 is advantageous for reducing the deformation of the second flange 32 due to the load of the solar cell module 40 and the snow cover.

In the above embodiment, as a fixing structure for fixing the bottom plate 11 to the gantry 30, an opening 14 for inserting a bolt 18 as a fastener is formed in the bottom plate 11. However, the fixing structure is not limited to this. For example, as shown in FIG. 6, instead of the opening 14, a protrusion 17 projecting downward may be formed on the bottom plate 11. By fitting the protrusion 17 into the through hole 34 of the first flange 31, the bottom plate 11 is positioned on the gantry 30. The protrusion 17 can be easily formed by, for example, pressing. Since the reinforcing metal fitting 1 of FIG. 6 provided with the protrusion 17 is installed on the gantry 30 without using the bolts 18 and nuts 18, the attachment work to the gantry 30 is even easier.

In the above embodiment, the case where the solar cell module 40 is installed on the flat roof has been described, but the present invention is not limited to this. The present invention is also applied when the solar cell module is installed on a sloped roof, a vacant lot other than the roof, or the like. Further, the reinforcing metal fitting of the present invention is used to support not only the snow load but also the load of the solar cell module itself.

The number of reinforcing metal fittings installed on the gantry 30 can be appropriately changed in consideration of the load supported by the gantry 30, the strength of the gantry 30, and the like, but in one embodiment, the long side (1.5 m) of the solar cell module 40 is used. ) Install two reinforcing metal fittings.

The present invention can be widely used in fields where it is necessary to reduce the deformation of the gantry on which the solar cell module is installed. Especially preferably used for heavy snow specifications (positive pressure 5400 Pa, snow cover 150 cm or more).

1 Reinforcing metal fitting 11 Bottom plate 14 Opening (fixing structure)
15 Support plate 15a Upper end of support plate 15c Chamfer 16 Bending part 17 Protrusion (fixing structure)
30 Stand 31 1st flange 32 2nd flange 34 Through hole 35 Web 40 Solar cell module

Claims (12)

A reinforcing metal fitting attached to a solar cell module mount including a first flange and a second flange facing each other and a web connecting the first flange and the second flange.
The reinforcing metal fitting includes a bottom plate and a support plate, and has a bottom plate and a support plate.
The bottom plate and the support plate are connected at right angles to each other at their respective ends.
A reinforcing metal fitting that is attached to the gantry so that the bottom plate is in surface contact with the first flange and the upper end of the support plate is in line contact with the second flange. The reinforcing metal fitting according to claim 1, wherein the reinforcing metal fitting has an L shape when viewed along a direction parallel to the bottom plate and the support plate. With the bent portion connecting the bottom plate and the support plate in contact with the surface of the first flange facing the second flange, the reinforcing metal fitting is changed from an inclined state to an upright state. The reinforcing metal fitting according to claim 1 or 2, wherein the gantry can be rotated with respect to the gantry. The reinforcing metal fitting according to any one of claims 1 to 3, wherein the direction of the line contact is a direction perpendicular to the web. The reinforcing metal fitting according to any one of claims 1 to 4, wherein the corner portion on the upper end side of the surface of the support plate on the bottom plate side is chamfered. The reinforcing metal fitting according to any one of claims 1 to 5, further comprising a fixing structure for fixing the bottom plate to the first flange. The reinforcing metal fitting according to claim 6, wherein the fixing structure is an opening for inserting a fastener. The reinforcing metal fitting according to claim 6, wherein the fixing structure is a protrusion protruding from the bottom plate toward the side of the first flange. A frame kit for a solar cell module including the reinforcing metal fitting according to any one of claims 1 to 8 and the frame to which the reinforcing metal fitting is attached. The gantry kit for a solar cell module according to claim 9, wherein the first flange is provided with through holes at a constant pitch along the longitudinal direction of the gantry. The gantry kit for a solar cell module according to claim 9 or 10, wherein the cross section along the plane perpendicular to the longitudinal direction of the gantry has a "U" shape. The frame kit for a solar cell module according to any one of claims 9 to 11, wherein the solar cell module is installed on a surface of the second flange opposite to the first flange.

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