JP2021110210A - Solar cell installation structure - Google Patents

Abstract

To provide a solar cell installation structure capable of preventing inclination of reinforcement metal fittings for snow accumulation against a roof.SOLUTION: The present invention relates to a solar cell installation structure to attach solar cell panels 3 on a roof 2. The solar cell installation structure is provided with reinforcement metal fittings 21 for snow accumulation supporting the solar cell panels 3 on an upper surface of the roof 2. The reinforcement metal fittings 21 for snow accumulation comprises at least a bottom surface part 45 placed on the upper surface of the roof 2 and an upper surface part 44 attached on an underside of the solar cell panels 3, as well as the bottom surface part 45 comprises expansion parts 45a and 45b expanding the bottom surface part 45 in at least one of a vertical direction (an extending direction 25 of a joint cover 9) and a lateral direction (an orthogonal direction 26 to the extending direction 25 of the joint cover 9) to the upper surface part 44. The bottom surface part 45 of the reinforcement metal fittings 21 for snow accumulation may have an erected part 62 oriented to an upper side through a bent part 61 at least on an edge part of the extension part 45a protruded in a vertical direction from the upper surface part 44.SELECTED DRAWING: Figure 5

Description

The present invention relates to a solar cell mounting structure.

Solar cell panels are attached to the roofs of buildings such as houses (see, for example, Patent Document 1).

Japanese Unexamined Patent Publication No. 2013-407447

In the solar cell mounting structure of Patent Document 1, the solar cell panel is fixed to the roof using only the fixing bracket. Therefore, it is difficult to protect the solar cell panel from the weight of the snow accumulated during heavy snowfall.

Therefore, for example, in the case of a building provided in a heavy snowfall area or the like, additional snow-covered metal fittings for reinforcing the solar cell panel against snow-covered (weight of snow) are provided.

At this time, since the bottom surface of the snow reinforcing metal fitting is not particularly fixed to the roof, the snow reinforcing metal fitting may tilt with respect to the roof. When the snow-covered reinforcing metal fittings are tilted with respect to the roof, for example, the edge of the bottom surface of the snow-covered reinforcing metal fittings hits the roof on one side, and an unbalanced load is applied to the roof. Therefore, in order to prevent an unbalanced load on the roof due to the inclination of the snow reinforcing metal fittings, it is necessary to insert a rubber spacer between the bottom surface of the snow reinforcing metal fittings and the roof.

Therefore, the main object of the present invention is to contribute to the improvement of the above-mentioned problems.

In response to the above problems, the present invention
It is a solar cell mounting structure that mounts the solar cell panel on the roof.
A snow-covered reinforcing metal fitting that supports the solar cell panel on the upper surface of the roof and reinforces the solar cell panel against snow is provided.
The snow-covered reinforcing metal fitting has at least a bottom surface portion mounted on the upper surface of the roof and an upper surface portion attached to the lower surface of the solar cell panel, and the bottom surface portion has the bottom surface portion with respect to the upper surface portion. It is characterized by having an extension portion that expands in at least one of the vertical direction and the horizontal direction.

According to the present invention, it is possible to prevent the snow-covered reinforcing metal fittings from tilting with respect to the roof by the above configuration.

It is a top view of the roof which shows the installation state of the solar cell panel in the roof provided with the solar cell mounting structure which concerns on this embodiment. It is a vertical cross-sectional view along the line AA of FIG. It is a vertical cross-sectional view along the line BB of FIG. It is an exploded perspective view which shows the attachment state of the attachment leg part with respect to the bottom surface of a solar cell panel. It is a figure which shows the mounting leg part (on the short side). Of these, (a) is a side view and (b) is a front view.

Hereinafter, the present embodiment will be described in detail with reference to the drawings.
1 to 5 are for explaining this embodiment.

<Structure> The configuration will be described below.

As shown in FIGS. 1 (to 3), the solar cell panel 3 is attached to the roof 2 of a building 1 such as a house.

The building 1 may be any kind, but in this embodiment, it is a unit building 4 or the like. The unit building 4 is a building 1 that can be constructed in a short period of time by transporting a box-shaped building unit 5 manufactured in advance at a factory to a construction site and assembling the unit building 4 at the construction site.

The roof 2 may be of any type, but in this embodiment, it is a flat roof having almost no slope, a sloped roof having a very gentle slope, or the like. An eaves 2a is formed at the tip of the roof 2, and an eaves gutter 6 (FIG. 2) is provided at the tip of the eaves 2a on the underwater side. The roof 2 is formed by arranging a plurality of roof finishing materials 8 side by side on the roof surface material 7, and a joint cover 9 is attached from above to the joint between the adjacent roof finishing materials 8. (In FIG. 3, the position of the joint cover 9 is pointed from the lower side for convenience).

The solar cell panel 3 (FIG. 4) is a power device for converting light energy into electric power, which is formed as a panel having a substantially rectangular shape in a plan view.

The solar cell panel 3 is mounted on the roof 2 by the following solar cell mounting structure.

(A) A snow-covered reinforcing metal fitting 21 that supports the solar cell panel 3 on the upper surface of the roof 2 and reinforces the solar cell panel 3 against snow (load).
A fixing bracket 22 for fixing to the joint cover 9 of the roof 2
The support and fixing legs 23 that are integrally connected are provided.
The support fixed leg portion 23 is
The snow-covered metal fitting 21 extends vertically and is interposed between the solar cell panel 3 and the roof 2 (FIGS. 2 and 3).
The upper end of the snow-covered reinforcing metal fitting 21 is attached to the solar cell panel 3 (FIG. 4).
The lower end of the snow reinforcing metal fitting 21 is placed on the upper surface of the roof 2.
Further, the support fixed leg portion 23 is
The fixing metal fitting 22 is fixed to the joint cover 9 in a state of being connected and fixed to the side surface of the lower end portion of the snow-covered reinforcing metal fitting 21 (FIG. 5).

Here, the solar panel 3 may be installed in parallel with the roof 2, but in this embodiment, since the roof 2 is in a state where there is almost no inclination, the solar panel 3 is efficient in sunlight. It is installed non-parallel to the roof 2 in a state of being inclined with respect to the roof 2 so that the light can be received in a targeted manner (FIG. 2). In this embodiment, the solar cell panel 3 is arranged so that one side (the eaves side) is lower and the other side (the eaves side) is higher than the extension direction 25 of the joint cover 9. The extension direction 25 of the joint cover 9 is the direction in which the joint cover 9 extends (longitudinal direction of the roof finishing material 8), and the joint cover 9 is usually from the eaves side (water upper side) to the eaves tip side (underwater). It is extended toward the side).

The upper surface of the roof 2 is the upper surface of the roof finishing material 8.

The snow-covered reinforcing metal fitting 21 is a support metal fitting having a leg shape or the like for supporting the solar cell panel 3 on the roof 2 in a state of being separated from the roof 2 and for making the solar cell panel 3 bear the weight of the snow. .. The snow-covered reinforcing metal fitting 21 is extended up and down in a direction substantially flush with the roof 2. When the solar cell panel 3 is inclined with respect to the roof 2 as described above, the snow reinforcement metal fitting 21 is shorter on the lower side of the inclination (short leg-shaped snow reinforcement metal fitting 21 (S), FIG. 5). , And use a long one (long-legged snow-covered metal fitting 21 (H)) on the high slope side. The short-legged snow-covered metal fittings 21 (S) and the long-legged snow-covered metal fittings 21 (H) basically have substantially the same configuration except for their lengths. Then, the snow-covered metal fittings 21 having the same length as each other (short-legged snow-covered metal fittings 21 (S) or long-legged snow-covered metal fittings 21 (H)) are separated from each other by the distance between the joint covers 9. A plurality of joint covers 9 are arranged side by side in a direction 26 orthogonal to the extending direction 25 of the joint covers 9 at equal intervals, and are installed at the positions of the joint covers 9 (FIG. 3). As a result, in the solar cell panel 3 of this embodiment, the solar cell panel 3 is supported and fixed to the roof 2 at a total of 6 positions, that is, the four corners or their vicinity and the intermediate portion of the pair of sides facing each other with a height difference. Has been done. The snow-covered reinforcing metal fitting 21 is attached directly below the position of the substantially edge portion of the solar cell panel 3 when viewed from the direction 26 orthogonal to the extending direction 25 of the joint cover 9. (FIG. 2). If necessary, the extension direction 25 of the joint cover 9 is the vertical direction of the snow reinforcement metal fitting 21, and the direction 26 orthogonal to the extension direction 25 of the joint cover 9 is the horizontal direction of the snow reinforcement metal fitting 21 or the snow reinforcement metal fitting 21. It is called the width direction of.

The joint cover 9 is a long member having a substantially downward U-shape, and is installed between both ends of the roof finishing material 8 from above so as to cover them. Rising portions are formed at both ends of the roof finishing material 8, and the joint cover 9 and the rising portion of the roof finishing material 8 are provided between the joint cover 9 with the rising portion covered with the joint cover 9. It is designed to be locked up and down by a locking portion.

Then, a plurality of joint covers 9 are installed so as to project upward with respect to the upper surface of the roof 2. The plurality of joint covers 9 extend parallel to each other along both ends of the roof finishing material 8. As a result, the plurality of joint covers 9 have an interval substantially equal to the width of the roof finishing material 8 with respect to the width direction of the roof finishing material 8 (direction 26 orthogonal to the extending direction 25 of the joint cover 9). Will be installed.

The fixing metal fitting 22 is a metal fitting installed at the position of the joint cover 9 and fixed to the joint cover 9. The fixing bracket 22 will be described later. The fixing bracket 22 is only fixed to the joint cover 9 and is not directly fixed to the solar cell panel 3.

The support fixing leg portion 23 is a general term for parts in which the fixing metal fitting 22 and the snow-covered reinforcing metal fitting 21 are connected and integrated. The support fixing leg portion 23 has a function of fixing the roof 2 to the joint cover 9 and a support reinforcement that supports the solar cell panel 3 on the upper surface of the roof 2 and withstands the load due to the snow cover by the fixing bracket 22 and the snow cover. It has a function and a mounting function for the solar cell panel 3.

The upper end portion of the snow-covered reinforcing metal fitting 21 is any portion on the upper end side of the snow-covered reinforcing metal fitting 21. The upper end of the snow-covered reinforcing metal fitting 21 is fixed to the lower surface of the solar cell panel 3 with mounting bolts 27 from the lower side to the upper side in a state of being in contact with the lower surface of the solar cell panel 3. The fixing metal fitting 22 is not fixed to the solar cell panel 3, but only the upper end portion of the snow-covered reinforcing metal fitting 21 is fixed. The snow-covered reinforcing metal fitting 21 is attached to the solar cell panel 3 with the solar cell panel 3 turned upside down (FIG. 4). The snow-covered reinforcing metal fitting 21 is attached to a portion of the frame 3a provided on the peripheral edge of the solar cell panel 3. An insulating material 28 for preventing electrolytic corrosion is interposed between the snow-covered reinforcing metal fitting 21 and the frame 3a of the solar cell panel 3, if necessary.

The lower end portion of the snow-covered reinforcing metal fitting 21 is any portion on the lower end side of the snow-covered reinforcing metal fitting 21. The lower end of the snow reinforcing metal fitting 21 is placed in a non-fixed state with respect to the upper surface of the roof 2.

The side surface of the lower end portion of the snow-covered reinforcing metal fitting 21 is any surface extending vertically on the lower end side of the snow-covered reinforcing metal fitting 21.

The connection fixing is performed by fixing the fixing metal fitting 22 and the snow-covered reinforcing metal fitting 21 with a connecting tool 29 such as a bolt or a nut.

(B) The snow-covered reinforcing metal fitting 21 and the fixing metal fitting 22 may be connected and fixed to each other in a state of being adjacent to the extension direction 25 of the joint cover 9 (FIG. 2).

Here, the adjacent state means that the snow-covered reinforcing metal fitting 21 and the fixing metal fitting 22 are installed in a state of being adjacent to each other at positions close to each other. Although it is structurally possible to connect and fix the snow-covered reinforcing metal fitting 21 and the fixing metal fitting 22 in a separated state, it is preferable to connect and fix them in an adjacent state and bring them closer to each other.

In the support fixing leg portion 23 of this embodiment, the fixing metal fitting 22 and the snow-covered reinforcing metal fitting 21 are arranged side by side in the extending direction 25 of the joint cover 9 with almost no gap, and the joint cover 9 is extended in the extending direction. By one connecting tool 29 extending to 25, they are connected and fixed to each other in the extending direction 25.

(C) The fixing metal fitting 22 may be connected and fixed to the outer side surface of the snow-covered reinforcing metal fitting 21 with respect to the solar cell panel 3 (FIG. 2).

Here, with respect to the solar cell panel 3, the outside of the snow-covered reinforcing metal fitting 21 is the side of the snow-covered reinforcing metal fitting 21 far from the center of the solar cell panel 3. On the contrary, with respect to the solar cell panel 3, the inside of the snow-covered reinforcing metal fitting 21 is the side of the snow-covered reinforcing metal fitting 21 near the center of the solar cell panel 3. The center of the solar cell panel 3 is the position of the intersection of the diagonal lines of the solar cell panel 3 having a substantially rectangular shape in a plan view.

Structurally, the fixing bracket 22 can be arranged on either the inside or the outside of the solar cell panel 3 with respect to the snow reinforcing bracket 21, but the snow reinforcing bracket 21 is inside and the fixing bracket 22 is outside. By arranging the fixing bracket 22 in the above position, the fixing bracket 22 is installed in a position where it can be easily reached.

Specifically, in FIG. 2, the short-legged snow-covered metal fittings 21 (S) are installed on the eaves side of the snow-covered metal fittings 21, and the long-legged snow-covered metal fittings 21 (H) are the eaves of the snow-covered metal fittings 21. It is installed on the original side. Then, as described above, since the snow-covered reinforcing metal fitting 21 is attached at a position substantially at the edge of the solar cell panel 3 when viewed from the direction 26 orthogonal to the extending direction 25, the fixing metal fitting 22 is the snow-covered reinforcing metal fitting. By being installed on the outside of 21, all the fixing brackets 22 are in a state of protruding (all or most of) from the peripheral edge of the solar cell panel 3 when viewed in a plane.

(D) The snow-covered reinforcing metal fitting 21 may have a recess 41 at the lower end for accommodating the joint cover 9 (FIG. 5).
The fixing bracket 22 may have a clamp portion 42 for fixing to the joint cover 9 at a position overlapping the recess 41 with respect to the extending direction 25 of the joint cover 9.

Here, the snow-covered reinforcing metal fitting 21 faces the vertical surface portion 43 extending vertically, the upper surface portion 44 bent so that the upper edge portion of the vertical surface portion 43 faces substantially laterally, and the lower edge portion of the vertical surface portion 43 substantially laterally. A vertical surface portion 45 having a bottom surface portion 45 bent to the same side as the upper surface portion 44 and both side wall portions 46 having left and right side edge portions of the vertical surface portion 43 bent to the same side as the upper surface portion 44 and the lower surface portion. It is a box-shaped member with an open surface on the opposite side of 43. By forming the box shape with such an open cross section, the snow reinforcing metal fitting 21 can obtain strength that can withstand the weight of snow. If there is a margin in strength, for example, a hole for weight reduction may be appropriately formed in the vertical surface portion 43 or the like. The snow-covered reinforcing metal fitting 21 can be formed by bending a single metal plate. The vertical surface portion 43 and the side wall portions 46 serve as the side surfaces of the snow reinforcing metal fitting 21.

The snow-covered reinforcing metal fitting 21 is placed on the roof 2 with the vertical surface portion 43 facing the outside of the solar cell panel 3 and the open surface opposite to the vertical surface portion 43 facing the inside of the solar cell panel 3. Will be installed. As a result, the vertical surface portion 43 becomes an outer side surface on which the fixing bracket 22 is attached.

The upper surface portion 44 is inclined with respect to the horizontal as the upper end surface of the snow-covered reinforcing metal fitting 21 so as to match the inclination angle of the solar cell panel 3. A plurality of mounting holes 44a for passing the mounting bolts 27 are formed in the upper surface portion 44 in the lateral direction. Mounting holes 44a are provided at three locations on the upper surface portion 44, a central portion in the lateral direction and both end sides.

The bottom surface portion 45 is formed parallel to the upper surface of the roof 2 as the lower end surface of the snow reinforcing metal fitting 21, and is placed on the upper surface of the roof 2. The upper surface portion 44 and the bottom surface portion 45 have a rectangular shape that is substantially long in the lateral direction in a plan view.

Specifically, the upper end portion of the snow-covered reinforcing metal fitting 21 is a portion on the upper end side such as the vertical surface portion 43, the periphery of the upper edge portion of both side wall portions 46, and the upper surface portion 44. Further, the lower end portion of the snow-covered reinforcing metal fitting 21 is specifically a portion on the lower end side such as the vertical surface portion 43, the periphery of the lower edge portion of both side wall portions 46, and the bottom surface portion 45.

The recess 41 has a width dimension and a height dimension larger than the width and height of the joint cover 9, and is notched around the lower edge portion of the vertical surface portion 43. The recess 41 is formed in the central portion of the vertical surface portion 43 in the width direction. Along with this, on the bottom surface portion 45 of the snow-covered reinforcing metal fitting 21, a cut portion 41a having the same width as the recess 41, which is continuous with the recess 41 and becomes a part of the recess 41, is formed in the extending direction 25 of the joint cover 9. It is formed so as to divide the bottom surface portion 45 in the width direction.

The clamp portion 42 of the fixing bracket 22 may have any shape structure as long as it can be fixed to the joint cover 9, but when viewed from the extension direction 25 of the joint cover 9, it has approximately the same size as or slightly smaller than the recess 41. It is supposed to be small.

Specifically, the clamp portion 42 is attached to the joint cover 9 from above, and the joint cover 9 is sandwiched in a direction 26 orthogonal to the extension direction 25.

The clamp portion 42 has a pair of clamp pieces 47 having an inner surface having substantially the same shape as the outer shape of the joint cover 9, and the upper end portion and both side portions of the joint cover 9 are substantially in close contact with each other by the pair of clamp pieces 47. It can be carried. The pair of clamp pieces 47 have inwardly facing claws at the lower end that can lock the lower portions on both sides of the joint cover 9. The pair of clamp pieces 47 are integrally formed at the lower end of the downward U-shaped opening / closing arm 48, and can be opened / closed by the opening / closing arm 48. The opening / closing arm 48 opens and closes the clamp piece 47 at the lower end centering on the bent portion at the upper end. The opening / closing arm 48 is arranged above the recess 41 when viewed from the extension direction 25 of the joint cover 9. A tightening fixing member 49 such as a bolt or a nut extending in a direction 26 orthogonal to the extending direction 25 is pierced through the opening / closing arm 48, and the pair of clamp pieces 47 are the tightening fixing member 49. It is tightened and fixed to the joint cover 9 by.

Then, a connecting metal fitting 51 for connecting the opening / closing arm 48 of the fixing metal fitting 22 and the side surface of the snow-covered reinforcing metal fitting 21 is provided. The connecting metal fitting 51 may be configured as a part of the fixing metal fitting 22, may be configured as a part of the snow-covered reinforcing metal fitting 21, or may be configured as a member independent of these.

The connecting metal fitting 51 is, for example, an angle-shaped bracket formed by bending a metal plate having surfaces facing in the vertical direction 52 to form two surfaces orthogonal to each other. The two orthogonal surfaces are a first mounting piece 53 extending in the extending direction 25 and a second mounting piece 54 extending in a direction 26 orthogonal to the extending direction 25. The first mounting piece 53 is inserted between the opening / closing arms 48 having a downward U-shape, and the tightening fixing member 49 is arranged through the opening / closing arm 48 so as to be fastened together with the opening / closing arm 48. The second mounting piece 54 is directed in a direction parallel to the vertical surface portion 43 of the snow-covered reinforcing metal fitting 21, and is in contact with the vertical surface portion 43 of the snow-covered reinforcing metal fitting 21 from the outside, and is extended in the extending direction 25 by the connecting tool 29. It is fastened and fixed to. The connecting tool 29 and the connecting metal fitting 51 form a connecting portion between the snow-covered reinforcing metal fitting 21 and the fixing metal fitting 22.

Overlapping with the recess 41 means that when the recess 41 is viewed in the extending direction 25 of the joint cover 9, the clamp portion 42 of the fixing bracket 22 appears to exist inside the recess 41. When the recess 41 is viewed in the direction 26 orthogonal to the extension direction 25 of the joint cover 9, the fixing bracket 22 does not have to be located in the recess 41.

Then, in contrast to the above configuration, this embodiment can be provided with the following configuration.

(1) The snow-covered reinforcing metal fitting 21 that supports the solar cell panel 3 on the upper surface of the roof 2 has at least a bottom surface portion 45 mounted on the upper surface of the roof 2 and an upper surface portion 44 attached to the lower surface of the solar cell panel 3. The bottom surface portion 45 has at least the bottom surface portion 45 in the vertical direction (extending direction 25 of the joint cover 9) and the lateral direction (direction 26 orthogonal to the extending direction 25 of the joint cover 9) with respect to the top surface portion 44. It has expansion portions 45a and 45b that extend to one side.

Here, the expansion portions 45a and 45b of the bottom surface portion 45 are an expansion portion 45a in the vertical direction and an expansion portion 45b in the horizontal direction. The expansion portions 45a and 45b are said to have the edges of the bottom surface portion 45 expanded in parallel to the outside. The expansion portions 45a and 45b are most preferably provided on all the edges of the bottom surface portion 45, but may be provided on at least one or more edge portions of the bottom surface portion 45. In this embodiment, since the extension portion 45a in the vertical direction is not provided on the side of the vertical surface portion 43, it is provided only at the position of the edge portion on the outside of the bottom surface portion 45. The lateral expansion portion 45b is provided on both side edges of the bottom surface portion 45. The expansion portions 45a and 45b can be provided on at least one or both of the short-legged snow-covered reinforcing metal fittings 21 (S) and the long-legged snow-covered reinforcing metal fittings 21 (H).

(2) The bottom surface portion 45 of the snow-covered reinforcing metal fitting 21 has a rising portion 62 that extends upward via the bent portion 61 at least at the edge portion of the expansion portion 45a that protrudes in the vertical direction from the upper surface portion 44 when viewed in a plane. You may have.

Here, the bent portion 61 is a portion in which the edge portion of the extended portion 45a in the vertical direction is bent upward, and it is preferable that the bent portion 61 has a rounded shape. The rising portion 62 may have a portion that bends upward even slightly. The bent portion 61 and the rising portion 62 can also be provided on the edge portion of the lateral expansion portion 45b.

(3) The snow-covered reinforcing metal fitting 21 may be integrally provided with a fall prevention member 65 on the side opposite to the rising portion 62 in the vertical direction.

Here, the fall prevention member 65 is a member for preventing the snow-covered reinforcing metal fitting 21 from falling in the vertical direction. The above-mentioned expansion portions 45a and 45b also function as a member for preventing the snow-covered reinforcing metal fitting 21 from tipping over. be. In addition, in order to prevent the snow-covered reinforcing metal fitting 21 from falling in the lateral direction, another fall prevention member may be provided.

(4) The fall prevention member 65 may be a fixing bracket 22 for fixing to the joint cover 9 of the roof 2.
The snow-covered reinforcing metal fitting 21 is formed with a recess 41 capable of accommodating the joint cover 9, and the fall prevention member 65 may be provided at a position where it vertically overlaps the recess 41.

Here, the positional relationship between the recess 41 and the fall prevention member 65 (fixing metal fitting 22) is as described above.

(5) The fall prevention member 65 may be connected to the snow reinforcing metal fitting 21 at a position laterally deviated from the recess 41 (offset amount 67).

Here, the vertical surface portion 43 of the snow-covered reinforcing metal fitting 21 is formed with left and right bolt holes 64 on the upper side of the recess 41 and on both sides of the recess 41 so that the connecting metal fitting 51 can be attached to the left and right sides in opposite directions. .. The connecting metal fitting 51 is connected to the snow-covered reinforcing metal fitting 21 by the connecting tool 29 at a position laterally detached from the clamp portion 42 of the recess 41 and the fixing metal fitting 22. The distance from the center of the recess 41 to the bolt hole 64 is the offset amount 67.

<Action> The action of this example will be described below.

The solar cell mounting structure may include a snow-covered reinforcing metal fitting 21 and a fixing metal fitting 22. The snow-covered reinforcing metal fitting 21 supports the solar cell panel 3 on the upper surface of the roof 2 and reinforces the solar cell panel 3 against (load) snow. The fixing bracket 22 fixes the roof 2 to the joint cover 9.

(Action A) At this time, the fixing metal fitting 22 may be integrally connected to the snow-covered reinforcing metal fitting 21 to form the supporting and fixing leg portion 23. Then, in the support fixing leg portion 23, the snow-covered reinforcing metal fitting 21 extends vertically and is interposed between the solar cell panel 3 and the roof 2, and the upper end portion of the snow-covered reinforcing metal fitting 21 is attached to the solar cell panel 3. The lower end of the snow-covered reinforcing metal fitting 21 may be placed on the upper surface of the roof 2. Further, the support fixing leg portion 23 may be fixed to the joint cover 9 in a state where the fixing metal fitting 22 is connected and fixed to the side surface of the lower end portion of the snow-covered reinforcing metal fitting 21.

As a result, the number of parts can be reduced by integrating the fixing metal fitting 22 and the snow-covered reinforcing metal fitting 21 into an integrated part. Further, simply by attaching the upper end portion of the snow-covered reinforcing metal fitting 21 to the solar cell panel 3, the fixing metal fitting 22 integrated with the snow-covered reinforcing metal fitting 21 is installed on the solar cell panel 3 at the same time. It is not necessary to attach the fixing bracket 22, and it is possible to reduce the trouble of attaching the fixing bracket 22 to the solar cell panel 3. Further, since it is not necessary to directly attach the fixing bracket 22 to the solar cell panel 3, the fixing bracket 22 can be simplified.

Then, by mounting the solar cell panel 3 to which the support fixing leg portion 23 is attached in advance on the roof 2, the solar cell panel 3 is stabilized on the roof 2 by the snow-covered reinforcing metal fitting 21 of the support fixing leg portion 23. In this state, the solar cell panel 3 can be easily fixed to the roof 2 in a stable state by simply attaching the fixing bracket 22 to the joint cover 9 of the roof 2. Therefore, it is possible to reduce the time and effort required to attach the solar cell panel 3 to the roof 2. Further, by integrating the fixing metal fitting 22 and the snow-covered reinforcing metal fitting 21 into the supporting and fixing leg portion 23, the mounting accuracy of the solar cell panel 3 on the roof 2 can be improved.

Further, since the support fixing leg portion 23 has the snow-covered reinforcing metal fitting 21 and the fixing metal fitting 22 on a one-to-one basis, the snow-covered reinforcing metal fitting 21 is more firmly fixed to the joint cover 9 of the roof 2. Therefore, it is possible to eliminate the need for a cross beam or the like that horizontally connects the adjacent snow reinforcing metal fittings 21.

(Action B) The snow-covered reinforcing metal fitting 21 and the fixing metal fitting 22 may be connected and fixed to each other in a state of being adjacent to the extension direction 25 of the joint cover 9. As a result, the snow-covered reinforcing metal fitting 21 and the fixing metal fitting 22 can be arranged at the shortest distance in the extending direction 25 of the joint cover 9. Therefore, the connection strength of the fixing metal fitting 22 to the snow-covered reinforcing metal fitting 21 can be increased, and the mounting strength of the supporting and fixing leg portion 23 to the joint cover 9 can be increased. Then, the support and fixing legs 23 and the fixing metal fittings 22 can be reduced in size and weight.

(Action C) The fixing metal fitting 22 may be connected and fixed to the outer side surface of the snow-covered reinforcing metal fitting 21 with respect to the solar cell panel 3. As a result, the fixing bracket 22 is arranged at a position outside the solar cell panel 3 that is easily accessible during the mounting work, so that the fixing bracket 22 can be easily attached to the joint cover 9 of the roof 2. Therefore, it is possible to improve the efficiency of the work of attaching the solar cell panel 3 to the roof 2.

(Action D) The snow-covered reinforcing metal fitting 21 may have a recess 41 at the lower end for accommodating the joint cover 9. As a result, by placing the snow-covered reinforcing metal fitting 21 on the roof 2 so that the joint cover 9 is accommodated in the recess 41, the snow-covered reinforcing metal fitting 21 is placed at the position of the joint cover 9 without being interfered with by the joint cover 9. It will be possible to install it in.

The fixing bracket 22 may be provided at a position where the clamp portion 42 for fixing to the joint cover 9 overlaps with the recess 41 with respect to the extending direction 25 of the joint cover 9. As a result, by installing the snow reinforcing metal fitting 21 at the position of the joint cover 9, the clamp portion 42 of the fixing metal fitting 22 provided at a position overlapping the recess 41 with respect to the extension direction 25 naturally becomes the joint cover 9. Since it comes to the overlapping position, the fixing bracket 22 can be easily fixed to the joint cover 9.

<Effect> According to this embodiment, the following effects can be obtained.

(Effect 1) The snow-covered reinforcing metal fitting 21 has at least a bottom surface portion 45 and a top surface portion 44, and the bottom surface portion 45 is an extension that extends the bottom surface portion 45 in at least one of the vertical direction and the horizontal direction with respect to the top surface portion 44. It may have parts 45a and 45b. As a result, the contact area of the bottom surface portion 45 of the snow-covered reinforcing metal fitting 21 with respect to the roof 2 is larger than that of the top surface portion 44 by the amount of the expansion portions 45a and 45b, so that the load per unit area applied to the contact portion of the roof 2 is increased. Can be reduced. Further, by expanding the bottom surface portion 45 of the snow-covered reinforcing metal fitting 21 from the top surface portion 44 to at least one of the vertical direction and the horizontal direction by the amount of the expansion portions 45a and 45b, the posture of the snow-covered reinforcing metal fitting 21 with respect to the roof 2 is stable. However, since the snow reinforcing metal fitting 21 whose bottom surface 45 is not fixed to the roof 2 is less likely to tilt in the vertical or horizontal direction, the snow reinforcing metal fitting 21 tilts with respect to the roof 2 to tilt the roof of the peripheral edge of the bottom surface 45. It is possible to prevent one-sided contact with 2 and an unbalanced load on the roof 2 due to one-sided contact. Therefore, since the load applied to the roof 2 by the snow reinforcing metal fitting 21 is reduced as a whole, the rubber spacer or the like interposed between the bottom surface 45 of the snow reinforcing metal fitting 21 and the roof 2 is not required. , It becomes possible to prevent damage to the roof 2.

(Effect 2) The bottom surface portion 45 of the snow-covered reinforcing metal fitting 21 is located at least on the edge portion of the expansion portion 45a protruding in the vertical direction from the top surface portion 44 when viewed in a plane, and the rising portion 62 upwards via the bending portion 61. May have. As a result, even if the snow reinforcing metal fitting 21 is tilted in the vertical direction with respect to the roof 2, the bent portion 61 hits the roof 2 on the side of the expansion portion 45a provided with the rising portion 62, so that the bending portion 61 hits the roof 2 on one side. The impact can be mitigated. Then, by providing the rising portion 62, the edge portion of the bottom surface portion 45 on the bent portion 61 side can be separated from the roof 2.

(Effect 3) The snow-covered reinforcing metal fitting 21 may be integrally provided with a fall prevention member 65 on the side opposite to the rising portion 62 in the vertical direction. As a result, when the snow reinforcement metal fitting 21 tries to tilt in the vertical direction with respect to the roof 2, the fall prevention member 65 causes the snow reinforcement metal fitting 21 to fall in the vertical direction (the snow reinforcement metal fitting 21 falls to the side of the fall prevention member 65 and It is possible to prevent the fall to the opposite side).

(Effect 4) The fall prevention member 65 may be used as a fixing bracket 22 for fixing to the roof 2. As a result, by fixing the solar cell panel 3 to the joint cover 9 of the roof 2 by the fixing metal fitting 22, it is possible to prevent the snow-covered reinforcing metal fitting 21 from tipping over in the vertical direction by the fixing metal fitting 22 at the same time. It is possible to eliminate the need to separately facilitate the fall prevention means of 21. Further, a recess 41 capable of accommodating the joint cover 9 may be formed in the snow reinforcing metal fitting 21, and the fall prevention member 65 may be provided at a position where the joint cover 9 overlaps the recess 41 in the vertical direction. As a result, the snow reinforcing metal fitting 21 can be installed at the position of the joint cover 9 without being interfered with by the joint cover 9, and the fixing metal fitting 22 can be made into a fall prevention member 65 that can be fixed to the joint cover 9 without any trouble. become.

(Effect 5) The fall prevention member 65 may be connected to the snow-covered reinforcing metal fitting 21 at a position laterally detached from the recess 41. As a result, the installation position and the connection position of the fall prevention member 65 with respect to the snow reinforcement metal fitting 21 are offset in the lateral direction, and the position of the tilt center of the snow reinforcement metal fitting 21 in the lateral direction becomes the connection position outside the recess 41. Compared with the case where the installation position and the connection position are simply arranged vertically without being offset in the lateral direction, the snow reinforcing metal fitting 21 can be made less likely to fall sideways.

1 Building 2 Roof 3 Solar panel 4 Unit building 9 Joint cover 21 Snow-covered reinforcement metal fittings 22 Fixing metal fittings 25 Extension direction of joint cover (vertical direction)
26 Direction orthogonal to the extension direction of the joint cover (horizontal direction)
41 Recess 44 Top surface 45 Bottom surface 45a Expansion 45b Expansion 61 Bending 62 Standing 65 Fall prevention member

Claims (5)

It is a solar cell mounting structure that mounts the solar cell panel on the roof.
A snow-covered reinforcing metal fitting for supporting the solar cell panel on the upper surface of the roof is provided.
The snow-covered reinforcing metal fitting has at least a bottom surface portion mounted on the upper surface of the roof and an upper surface portion attached to the lower surface of the solar cell panel, and the bottom surface portion has the bottom surface portion with respect to the upper surface portion. A solar cell mounting structure characterized by having an extension portion that extends in at least one of the vertical direction and the horizontal direction. The solar cell mounting structure according to claim 1.
The bottom surface portion of the snow-covered reinforcing metal fitting has a rising portion that extends upward through a bent portion at least at the edge portion of the expansion portion that protrudes in the vertical direction from the top surface portion when viewed in a plane. The solar cell mounting structure is characterized by. The solar cell mounting structure according to claim 2.
The snow-covered reinforcing metal fitting has a solar cell mounting structure characterized in that a fall prevention member is integrally provided on the side opposite to the rising portion in the vertical direction. The solar cell mounting structure according to claim 3.
The fall prevention member is a fixing bracket for fixing to the joint cover of the roof.
The solar cell mounting structure is characterized in that the snow-covered reinforcing metal fitting is formed with a recess capable of accommodating the joint cover, and the fall prevention member is provided at a position vertically overlapping the recess. The solar cell mounting structure according to claim 4.
The solar cell mounting structure is characterized in that the fall prevention member is connected to the snow reinforcing metal fitting at a position detached from the recess in the lateral direction.

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