JP3328561B2 - Roof-mounted rack mounting device and its mounting method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a roof mounting rack mounting apparatus for mounting a roof mounting object such as a solar panel on a flat tiled roof and a method of mounting the same.

[0002]

2. Description of the Related Art Slate flat roof tiles (hereinafter referred to as roof tiles)
There are various types in terms of design, but in general, the size of one tile is roughly divided into about 910 mm (Fig. 5) and about 6
There are two types, 10 mm (FIG. 6). Vertical length is approximately 1
It is a pentagon in which the upper end side of the tile has a mountain shape and is about 415 mm in type.
It is. KawaraAtsu is about 4 mm, prone state of tile, as shown in FIG. 1, the field with a predetermined amount of the wrap state column direction V two flat plates tiles 1 adjacent to the vertically along the slope of the roof It is laid down on the main plate. In this wrapped state, the lower end of the roof tile 1 at the upper position overlaps the upper end of the roof tile 2 at the lower position, and the amount of the wrap largely covers the upper end side, leaving about 185 mm from the lower end of the tile, as shown in FIG. ing. On the entire roof, almost two tiles are laid down.

[0003] When the tiles are folded down in the horizontal direction, the horizontal end faces are abutted on the same surface without overlapping the horizontal end faces. Also, since this tile is a flat plate, it does not have a curved curved surface that controls drainage and water flow like a normal Japanese tile, so rainwater on the tile surface is not controlled at all Flows arbitrarily. Then, rainwater will flow down from the mating surface of the side end surfaces. Therefore, the tiles are laid down in an alternately laid-down state in which the horizontal mating surfaces of the tiles are shifted down by half a tile for each row in the row direction H.

[0004] In the case of roofing, a waterproof sheet is stretched over the entire ground board before the roofing. Then, the roof tile is laid down on the two-layer stack described above. Here, the method of fixing the tile to the base plate is to assemble the tile from the lower side in the column direction, but the nail is fixed to the tile with several nails per sheet. The problem with mounting a rack to fix the objects mounted on the roof, such as solar panels, to the flat tiled roof is that there is no gap between the tile and the ground board, as in the case of Japanese tile, and the rafters in the attic body, etc. There is no space for fixing the support fittings at all, and a grip structure between the rafter and the support fittings cannot be established.

[0005] Conventional methods for mounting a rack on a flat tiled roof are roughly classified into two methods. One is to destroy and remove the required number of roof tiles and replace it with a special roof tile with a rack support stand.One is to support the existing roof tile without destroying the roof tile. Is to place it like a sleeper and fix it to the field board with a penetration nail.

[0006]

However, each of the above two methods has the following problems. The first method involves the removal of existing tiles in order to replace them with dedicated tiles with a support base, and the replacement of the tiles with special tiles to restore the roof surface, and the panels on the rack are replaced with the tiles. Fixtures that firmly grip the field board are required so that they are not blown away. For this purpose, the tensile strength is insufficient with only the nail hidden in the existing tile at the upper position, so that a screw nail is required around the dedicated tile, and a waterproof structure for the hole of the screw nail is also required. In addition, in this configuration, cost is high and workability is inefficient.

In the second method, a support base is placed in accordance with the position of the rafter, a through hole is formed up to the roof tile in this state, and a screw nail is inserted into the through hole to be fastened and fixed to the rafter. When fixing to rafters, there is a problem that the roof surface sinks due to the weight of the panel when using only the baseboard. In addition, since the rafter position is fixed, the rafter position must be accurately measured before forming the through hole.
Further, the above two methods have two more common problems.

One of the problems is the problem of waterproofing. In general, for waterproofing between rigid bodies such as metal, a waterproof rubber sheet or the like is generally sandwiched between the rigid bodies and tightened. Waterproofing is performed by a method, and even if it can be expected to be waterproof in the horizontal direction, it is difficult to waterproof because the rainwater transmitted through the hole of the screw nail does not have a perfect sealing property. Another problem is that it is not possible to correct the flatness of the wavy surface of the tile surface. The height of the support is fixed, and the height of the support placed on the tile surface is added to the wavy state of the tile surface as it is, so that the rack is installed in a wavy state. When such a rack undulates, the performance of a panel whose flatness is important, such as a solar panel, is affected.

The present invention provides a roof-mounted rack mounting apparatus and a method of mounting the same, which can easily install a rack on an existing roof tile, and have a function of correcting roof surface waving, uniform surface pressure distribution, and a reliable waterproof function. Providing is an issue to be solved.

[0010]

According to the present invention, there is provided an apparatus for mounting a rack on a roof according to the present invention, wherein a lower end of a flat tile at an upper position along an inclination of a base plate is wrapped at an upper position of an upper end of a flat tile at a lower position. A roof mounting rack mounting apparatus for installing a roof mounting object on a flat tile roof in which each flat tile is laid down on the field board, having a support bolt standing upright, and A base plate placed between the flat tiles at the lower position, a spacer interposed in a gap between the base plate and the flat tile at the lower position, and two upper and lower plates from the upper surface of the base plate. It is provided with a plurality of fastening members that are driven into the base plate through the flat roof tile and the spacer to fix the base plate to the base plate, and a rack fixed to an upper end portion of the support bolt. Features.

In the above-mentioned roof mounting rack mounting apparatus, a base plate to which a load on the roof mounting object is directly applied is installed straddling between a flat roof tile at an upper position and a flat roof tile at a lower position.
In addition, since the spacer is interposed between the base plate and the flat tile at the lower position, the base plate receiving the load from the base plate via the fastening member can reduce the surface pressure of the base plate near the base plate. Of the roof tiles. As a result, a load is not locally applied to the base plate, and a stable mounting structure is provided.

The method of mounting a rack on a roof according to the present invention comprises:
A base plate having pillar bolts rising upward, a spacer interposed in a gap between the base plate and the flat roof tile at a lower position, and two upper and lower flat roof tiles and the spacer from the upper surface of the base plate; A plurality of fastening members that penetrate and are driven into the base plate to fix the base plate to the base plate;
Using a rack fixed to the upper end of the support bolt, the upper and lower two sheets at a predetermined position are arranged so that the base plate is disposed over the flat tile at the upper position and the flat tile at the lower position. A step of forming a plurality of through-holes penetrating the flat roof tile, and aligning the through-holes formed in the base plate with the plurality of through-holes and aligning the through-holes with the through-holes. A plate mounting step of interposing the spacer between the base plate and the flat roof tile at a lower position and driving the fastening member into the base plate from the through hole of the base plate; And a rack fixing step of fixing the rack to the upper end.

According to the above-mentioned roof-top rack mounting method, the base plate can be securely fixed to the base plate by a simple operation of directly forming a through hole in the flat tile. In addition, since the base plate straddles the flat tile at the upper position and the flat tile at the lower position, the surface pressure on the base plate is dispersed over the area of the plurality of tiles near the base plate, so that a fixed weight of the roof tile is mounted on the roof. The number of use of the present apparatus for a fixture can be greatly reduced, and work efficiency on site can be greatly improved.

A waterproof sheet is inserted into the back of the base plate, between the upper and lower two flat tiles, and on the back of the spacer, and a caulking material is injected into the through holes of the two upper and lower flat tiles. Is preferred. In the above-mentioned rack mounting device, it is preferable that the upper end side of the base plate is cut into a triangular mountain shape. Thereby, drainage of rainwater can be performed well.

[0015] It is preferable that the end face on the upper end side of the base plate is chamfered into a single edge shape. Thereby, drainage of rainwater can be performed more favorably. It is preferable that the upper end side of the spacer is cut into a triangular mountain shape like the base plate. Thereby, drainage of the rainwater flowing around the spacer can be improved similarly to the base plate. More preferably, the upper end surface of the spacer can be chamfered into a single edge.

It is preferable that the upper end of the spacer has a gap with the lower end of the flat roof tile at the upper position. This allows
A gap is formed between the lower end of the flat tile at the upper position and the upper end surface of the spacer, so that the occurrence of puddles can be prevented. The fastening member that penetrates the flat tile at the upper position is driven upward by a predetermined distance from the lower end of the flat tile at the upper position, and the fastening member that penetrates the flat tile at the lower position is the flat tile at the lower position. It is preferable to drive a predetermined distance upward from the lower end of the head.
As a result, it is possible to avoid a water climbing phenomenon in which rainwater is transmitted by a capillary phenomenon to a gap between the upper and lower two flat roof tiles through which the fastening member penetrates.

[0017]

BEST MODE FOR CARRYING OUT THE INVENTION The rack mounting apparatus for mounting on a roof according to the present invention is installed on a flat tiled roof, and the flat tiled roof is a Japanese tile between a flat tile on a field board and the field board. Is laid down in a predetermined wrap state (a state in which two flat roof tiles adjacent to each other in the column direction along the inclination of the base plate are wrapped up and down by a predetermined amount) without such a gap.

The base plate is disposed so as to straddle the lower end of the upper tile and the lower end of the lower tile. As the position of the base plate in the row direction, any position that is not restricted by the position of the rafters or the like can be selected. As the fastening member, a screw nail or the like fastened by screwing into the field board can be used.
Among the plurality of fastening members, a group of fastening members that penetrates the tile at the upper position is shifted upward by a predetermined distance from a lower end of the tile at the upper position, and a group of fastening members that penetrates the tile at the lower position is It is preferable to drive the tile closer to the upper side by a predetermined distance from the lower end of the tile.

The spacer fills the gap between the base plate and the flat roof tile at the lower position, and it is preferable to use an elastic member such as rubber. Further, it is preferable to interpose a waterproof sheet between the base plate and the roof tile and between the base plate and the spacer. Further, it is preferable to interpose a waterproof sheet between the upper and lower two tiles through which the fastening member passes.

It is preferable that the rack is made of stainless steel having excellent rust prevention. In the roof mounting rack mounting method of the present invention, the through hole forming step forms a through hole penetrating the upper and lower two tiles in accordance with the position of the through hole in the base plate. In the base plate, it is preferable that the support bolt is erected in advance at a substantially central position by welding or the like, and a through hole for a fastening member is formed along the outer edge.
It is preferable to inject a caulking material for waterproofing into the formed through-hole.

In the plate installation step, the through hole of the base plate is made to coincide with the through hole, and a fastening member is driven into the base plate from the through hole of the base plate.

[0022]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A specific embodiment of the present invention will be described with reference to the drawings. As shown in FIG. 1, the flat tile roof has a plurality of flat tiles (also referred to as slate tiles) arranged in a vertical row V and a horizontal row H along a slope of a base plate 17 (see FIGS. 2 to 4). Specifically, in the row direction H, adjacent tiles are arranged side by side with their lateral end faces abutting, and in the column direction V, two adjacent tiles wrap vertically. In the horizontal direction H, the tiles are alternately shifted left and right for each row, and the roof is laid down so that almost two tiles are overlapped on the entire roof. In addition,
The waterproof sheet 6 is stretched on the upper surface of the field board 17.

The on-roof mounting rack mounting apparatus (hereinafter abbreviated as the present apparatus) of the embodiment is configured as shown in FIG. In FIG. 2, reference numerals 1 and 2 denote a roof tile at an upper position and a roof tile at a lower position at a position where the present apparatus is mounted. The present apparatus comprises a base plate 11 installed across the upper tile 1 and the lower tile 2, a column bolt 12 erected substantially at the center of the base plate 11, and a lower position between the base plate 11 and the lower position. The main components are a spacer 13 made of flat rubber and interposed in the gap between the roof tile 2 and a rack 14 composed of a vertical rack 14A and a horizontal rack 14B fixed to the upper end of the column bolt 12.

The base plate 11 is made of a rust-preventive alloy such as stainless steel and has a plate thickness substantially equal to that of a tile. The shape of the base plate 11 is, as shown in FIG. 11A, and the tip surface of the angled portion 11A has a blade surface 11 chamfered into a single blade as shown in FIG.
B. The lower end of the base plate 11 is square,
The planar shape of the base plate 11 is a vertically long pentagon.
Specifically, the length of the base plate 11 is approximately 330 m when compared with the length of the flat tile of 415 mm shown in FIGS.
m (the length from the top to the bottom of the chevron 11A) is preferred.

The column bolt 12 uses a threaded rod having a thread formed over its entire length. Base plate 11 and support bolt 1
2, the base plate 11 and the support bolt 12 are integrated by previously screwing a reinforcing nut 15 to the lower end of the support bolt 12 and
And fixing the lower ends of the support bolts 12 to the upper surface of the base plate 11 by welding or the like.

The base plate 11, as shown in FIG.
A through hole P through which a predetermined number of screw nails 16 (fastening members) are inserted is formed in the outer edge portion, and the screw nails 16 inserted through the through holes P are formed.
Is fastened to the field board 17 through the two wrapped roof tiles. In addition, a common through hole Q is formed in a position where the screw nail 16 is to be driven, in the tile wrapped in advance. By the way, the following waterproof means is provided for waterproofing rainwater transmitted through the hole of the screw nail 16. The waterproofing means is stretched on the back surface of the base plate 11, extends over the lower surface of the upper tile 1 and the upper surface of the spacer 13, and stretches on the back surface of the spacer 13. A waterproof sheet 19 interposed between the lower end of the position tile 2, a waterproof sheet 20 interposed between the lower end of the upper position tile 1 and the upper end of the lower position tile 2, and a lower position tile 2, a waterproof sheet 21 interposed between the lower tile 2 and the upper end of the lower tile 2A. Waterproof sheet 1
8 is preferably formed in the same pentagon as the base plate 11, and the waterproof sheet 19 is preferably formed in the same shape as the spacer 13.

Here, the spacer 13 is provided on the base plate 1.
It is a pentagonal plate-like member shorter than 1. The upper end forms a mountain-shaped portion 13A like the upper end of the base plate 11.
A gap S is formed between the apex of the chevron 13A and the lower end of the roof tile 1. The gap S is for preventing the formation of rainwater between the lower end of the upper tile 1 and the upper end of the spacer 13.

The screw nail 16 penetrating the roof tile 1 from the upper end side of the base plate 11 is driven upward by a predetermined distance from the lower end position of the roof tile 1. Also, a screw nail 1 penetrating the lower tile 2 from the lower end side of the base plate 11
6 is driven upward by a predetermined distance from the lower end position of the lower tile 2. It is preferable to set these screw nail positions at positions 60 to 70 mm or more above the lower end of the position tile 2 called the upper position tile 1.

As shown in the circle of FIG. 2, an arm-shaped waterproof washer 30 having a waterproof packing 29 embedded therein and having a metal stopper function is covered under the head of each screw nail 16. The waterproof packing 29 may be replaced with an O-ring.
The metal stopper function of the waterproof washer 30 is as follows.
This is because the waterproof packing 29 will not be damaged even if is excessively tightened. The caulking material 31 is filled between the waterproof sheet 6 on the base plate 17 around the screw nail 16 and the back surface of the tile.

As shown in FIGS. 2 and 3, a level nut 22, a support plate 23, and a packing 24 are fitted to a predetermined position of the upper end of the support bolt 12 in this order from the lower side. The vertical rack 14 </ b> A is placed in a form supported on the top 24. The vertical rack 14
A is fixed to the upper end of the column bolt 12 by a top nut 25 screwed from the upper end of the column bolt 12 as shown in FIGS. Top nut 2
5 and a flat washer 2 from the top
6. Elastic washers 27 are interposed in this order.

The present apparatus can be mounted at the positions indicated by reference numerals 3 to 5 in FIG. Position 3 is a position straddling between the upper position tile 1 and the horizontal butting surfaces of the two lower position tiles 2 and 2 adjacent in the row direction H, and position 4 is the right half of the upper position tile 1 and the lower position. It is a position that straddles the left half of the roof tile 2, and position 5 is
This is a position straddling between the horizontal abutting surfaces of the two upper tiles 1 and 1 adjacent to each other in the row direction H and the lower tile 2.

By supporting the on-roof mounted object 28 by the on-roof mounted rack mounting apparatus having such a configuration,
The following effects are achieved. (1) Surface Pressure Dispersing Function The base plate 11 is disposed across the upper tile 1 and the lower tile 2, and the lower end of the base plate 11 and the lower tile 2 are filled by the spacer 13 with a step. The load applied to the base plate 11 is
It is distributed to a plurality of tiles near one. For this reason, the field board 17
No load is applied only to a portion corresponding to the area of the base plate 11, the surface pressure on the base plate 17 is dispersed over a wide area of a plurality of tiles, and a stable mounting structure that reduces the load on the base plate 17. Becomes (2) Waterproof function The waterproof function provided in the present device includes waterproof sheets 18 and 19 between the base plate 11 and the tiles, waterproof sheets 20 and 21 between the upper and lower two tiles, and a waterproof washer on the screw nail head. 30 to prevent rainwater from entering the hole through which the screw nail 16 has penetrated. (3) Drainage performance The angled portion 11A of the base plate 11 is shaped in consideration of drainage of rainwater flowing from the upstream of the tile, and can prevent water from stagnating on the upper end side of the base plate 11.

Further, the tip of the chevron 11A is formed with a blade surface 11B chamfered in the shape of a blade edge, and has a shape that quickly flows away from rainwater flowing from above the tile surface.
The angle of the chevron 11A is approximately 112 degrees, and the blade surface 11B
Was 34 degrees. The basis for this angle was determined by experiment. For the same reason as the angled portion 11A of the base plate 11, the angled portion 13A at the upper end side of the spacer 13 also avoids stagnation of water around the base plate and makes drainage good.

A screw nail 16 penetrating through the upper tile 1 from the upper end side of the base plate 11 is moved from the lower end position of the upper tile 1 by six.
Since it is set at a position of 0 to 70 mm or more on the upper side, the gap between the mating surfaces of the upper tile 1 and the lower tile 2 can be narrowed toward the upper side of the roof slope, and the water transmitted by the capillary phenomenon in the gap can be obtained. It has a structure that suppresses the phenomenon of climbing. Similarly, the screw nail 16 penetrating through the lower position tile 2 from the lower end side of the base plate 11 is 60-70 from the lower end position of the lower position tile 2.
mm, the water climbing phenomenon between the mating surfaces of the lower tile 2 and the lower tile 2A is suppressed.

The reason why the position of the screw nail 16 is set at the above-mentioned distance from the lower end of the roof tile is as follows. Normally the tile surface has considerable irregularities, and between the tiled surfaces in the wrapped state,
This is a joined state having a gap of 0.4 mm or more. Under these conditions, the degree of the capillary water climbing phenomenon assuming heavy rain was examined. As a result, it was found that approximately 30 mm was climbed along the slope of the roof. From these results, the setting position of the screw nail 16 was set to a position of 60 to 70 mm with a margin from the lower end of the roof tile.

In addition, these measures for improving drainage are designed to support a waterproof function and to reliably prevent water leakage from the holes of the screw nails 16. (4) Roof Surface Ripple Correction Function In this device, the mounting height position of the rack 14 can be adjusted by raising and lowering the position of the level nut 22 on the support bolt 12. This makes it possible to absorb the waving of the tile surface so that the load on the object placed on the roof is evenly applied to the roof surface. In particular, when the solar panel 33 (FIG. 4) is mounted as the object 28 placed on the roof, The space between the rack and the rack 14 can be secured so that a sufficient heat radiation effect can be obtained, and the flatness can be increased and the power generation efficiency can be optimized.

Next, a method of mounting the present apparatus will be described. (1) First, the number of the devices used for one roof-mounted object 28 is appropriately selected according to the planar size and weight of the roof-mounted object 28. The mounting position of this device is determined as follows. As shown in FIG. 4, reference marking lines 34A and 34B relatively close in the column direction V on the flat tiled roof are drawn, and reference marking lines 35 are drawn in the row direction H. The reference marking line 34A matches the left lateral end face of the base plate 11, for example, and the reference marking line 34B corresponds to the chevron 1
This is to match the vertices of 1A. The reference marking line 35 is for matching the lower ends of the base plate 11. Then, in a later plate setting step, the mounting position can be determined by aligning the left rear end angle of the reference plate 11 with the intersection of the reference marking lines 34A and 35. Further, the mounting position is not limited to the position of the rafter 31 (FIGS. 3 and 4) such as the positions 3 to 5 shown in FIG. (2) As shown in FIG. 3, the waterproof sheets 20 and 21 are inserted into the rear surface of the upper tile 1 and the rear surface of the lower tile 2 at the determined mounting positions, respectively. The waterproof sheets 20, 21 may have the same shape and the same size as the base plate 11, or may be slightly wider. This insertion can be easily performed with a gap without removing the tile with a thin flat blade tool. (3) Top tile 1 aligned with through hole P of base plate 11
A through hole Q is formed in the upper tile 2 and the lower tile 2 and the lower tile 2 and the lower tile 2A using a drill or the like from a predetermined point of the lower tile 2 (through hole). Forming step). (4) Nozzle-like container 3 shown in FIG.
The caulking material 31 is injected using 2 or the like. The caulking material 31 is sufficiently injected around the lower end of the through hole Q so as to hang down on the waterproof sheet 6 on the field board. (5) A waterproof sheet 19 is provided on the upper surface of the lower tile 2 and a spacer 13 is provided thereon by bonding or the like. At this time, the top of the chevron 13A of the spacer 13 forms a gap S with the lower end of the upper tile 1. (6) The waterproof sheet 18 and the base plate 11 are positioned over the lower end of the roof tile 1 and the spacer 13.
In addition, it is preferable that through holes 18A, 13B and 19A corresponding to the through holes P and the through holes P of the base plate 11 are formed in the waterproof sheet 18, the spacer 13 and the waterproof sheet 19 in advance. (7) The screw nail 16 as a fastening member is inserted through the through hole P.
The screw nail 16 is driven so that its tip is fastened to the base plate 17 (plate installation step). The screw nail 16 has a waterproof washer 30 previously filled with a waterproof packing 29 inside.
Is attached. (8) Prop bolt 12 standing from each base plate 11
Of the level nut 22 is adjusted by stretching a level thread or the like. (9) The mounting holes of the vertical rack 14A are aligned with the support bolts 12 in which the positions of the level nuts 22 are set.
Is placed on the packing 24 above the level nut 22. Subsequently, an elastic washer 27 and a flat washer 26 are placed on the upper end of the column bolt 12 protruding from the vertical rack 14A in this order, and the top nut 25 is screwed together to fasten and fix the rack 14 to the column bolt 12 (rack fixing step). ).

Thus, the on-roof mounting rack mounting device capable of stably mounting the on-roof mounting object can be installed on a flat tiled roof. In this installation method, through-hole P
Opening the base plate 11 with the base plate 17
In addition to being able to securely fix to the roof tile, the base plate 11 straddles the upper tile 1 and the lower tile 2, so that the load on the roof mounted object is dispersed, and the use of the present apparatus for the roof mounted object 28 of a fixed weight or size. The number can be greatly reduced. This has a great effect of improving work efficiency on site.

[0039]

As described above, according to the present invention, through-holes are directly opened in flat tiles without peeling off existing tiles or using special tiles with a support base, thereby efficiently installing the roof tiles. The rack can be mounted on the ground board, and it has not only a function to correct the wavy surface of the tile surface, but also a sufficient drainage performance and waterproof function, and secures a stable load on the roof surface by ensuring the load distribution received on the tile surface. Structure can be provided.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram showing a position where the present apparatus is mounted on a flat tiled roof.

FIG. 2 is a cross-sectional view illustrating a state where the apparatus is mounted.

FIG. 3 is an exploded perspective view showing a construction method of the present apparatus.

FIG. 4 is a perspective view showing a state in which a solar panel is mounted on the apparatus.

FIG. 5 is a plan view showing a flat roof tile having a wide width.

FIG. 6 is a plan view showing a flat roof tile having a small width.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Top roof tile, 2 ... Bottom roof tile, 3-5 ... Base plate installation position, 6 ... Waterproof sheet, 11 ... Base plate, 11A
... Angle section, 11B ... Blade surface, 12 ... Post bolt, 13 ... Spacer, 13 ... Angle section, 14 ... Rack, 15 ... Level nut, 16 ... Screw nail (fastening member), 18-20 ... Waterproof sheet.

Claims (11)

(57) [Claims] The flat tiles are laid flat on the base plate with the lower end of the flat tile placed at the upper position along the slope of the base plate wrapped at the upper position of the upper end of the flat tile at the lower position. A roof mounting rack mounting device for mounting a roof mounting object on a tiled roof, comprising a support bolt that stands upright, and a base installed between the flat roof tile at an upper position and the flat roof tile at a lower position. A plate, a spacer interposed in a gap between the base plate and the flat roof tile at a lower position, and driving the upper and lower two flat roof tiles and the spacer from the upper surface of the base plate and driving the flat roof tile. A rack mounting device on a roof, comprising: a plurality of fastening members for fixing the base plate to the base plate; and a rack fixed to an upper end of the support bolt. 2. The rack mounting device according to claim 1, wherein a waterproof sheet is inserted into the back surface of the base plate, between the upper and lower flat tiles, and the back surface of the spacer. 3. Aligning with the position of the through hole of the base plate
2. The rack mounting device according to claim 1, further comprising a caulking material injected into a through hole penetrating the two upper and lower flat tiles . 4. The rack mounting apparatus according to claim 1 , wherein an upper end of the base plate is cut into a triangular mountain shape. 5. Before SL foundation upper end surface of the upper side of the plate is covered on the mounting rack mounting apparatus according to claim 4, characterized in that the chamfered edged shape. 6. The rack mounting device according to claim 1, wherein the upper end of the spacer is cut into a triangular mountain shape. 7. The on-roof mounting rack mounting apparatus according to claim 1, wherein the spacer has a gap between a lower end of the flat tile at an upper position and a lower end of the flat tile. 8. The group of fastening members that penetrates the flat tile at the upper position among the plurality of fastening members is driven upward by a predetermined distance from the lower end of the flat tile at the upper position, and 2. The rack mounting device according to claim 1, wherein the fastening member group penetrating the flat tile at the position is driven upward by a predetermined distance from a lower end of the flat tile at the lower position. 3. 9. A base plate having pillar bolts standing upright, a spacer interposed in a gap between the base plate and the flat tile at a lower position, and two upper and lower flat plates from the upper surface of the base plate. The flat roof tile, comprising: a plurality of fastening members that penetrate the roof tile and the spacer and are driven into the base plate to fix the base plate to the base plate; and a rack fixed to an upper end portion of the support bolt. Forming a plurality of through-holes penetrating the upper and lower two flat roof tiles at a predetermined position so that the base plate is disposed over the flat roof tile at the upper position and the flat roof tile at the lower position. And positioning the through-holes formed in the base plate corresponding to the plurality of through-holes with the through-holes, and interposing the spacer between the base plate and the flat roof tile below. And
A plate installation step of driving the fastening member into the base plate from the through hole of the base plate, and a rack fixing step of fixing the rack to an upper end of a support bolt of the base plate. Roof-top rack mounting method. 10. The method of mounting a rack on a roof according to claim 9 , further comprising a step of injecting a caulking material into the through hole before driving the fastening member into the base plate. 11. The rack mounting method according to claim 9, further comprising a sheet inserting step of inserting a waterproof sheet into the back surface of the base plate, between the upper and lower two flat tiles, and into the back surface of the spacer.