JP7787743B2 - Finishing material fixing structure and finishing material fixing hardware - Google Patents

Description

This invention relates to a finishing material fixing structure and a finishing material fixing fixture.

For example, when covering a thick base material with a thin finishing material and fastening the two together from above, it is desirable to use small-diameter screw members that match the thin finishing material to fasten them together in a way that looks good, in order to improve the finish quality (see, for example, Patent Document 1).

Japanese Patent Application Laid-Open No. 2013-266566

When the base material to which a thin finishing material is fixed is thick, it is difficult to pre-machine small pilot holes for small-diameter screw components in the thick base material at the factory. This is because the tools used to drill small pilot holes are thin and small, and the thicker the base material and the smaller the diameter of the pilot hole, the less durable the tools become.

As a result, for example, thin finishing materials were fixed directly to thick base materials using drill screws that did not require pilot holes on site, or pilot holes had to be manually drilled on site in the thick base material before the thin finishing material was fixed to the thick base material, but this method was difficult to install.

The main purpose of this invention is to contribute to improving the above-mentioned problems.

In response to the above problems, the present invention provides:
A finishing material fixing structure in which a thin finishing material is placed on a thick base material and fastened from above,
A finishing material fixing metal fitting having a thickness intermediate between that of the base material and that of the finishing material is interposed between the base material and the finishing material,
The finishing material fixing fixture has a large-diameter first screw hole portion and a small-diameter second screw hole portion,
The finishing material fixing fixture is fastened and fixed onto the base material by passing a large-diameter first screw member through the large-diameter first screw hole portion,
The finishing material placed on the finishing material fixing fixture is fastened and fixed to the second small-diameter screw hole portion of the finishing material fixing fixture with a second small-diameter screw member ,
The base material is
a first pilot hole for attaching the first screw member having a large diameter at a position that matches the first screw hole portion having a large diameter;
The screw thread is characterized in that a second pilot hole having a larger diameter than the second small-diameter screw hole portion is provided at a position that coincides with the second small-diameter screw hole portion .

According to the present invention, the above-mentioned configuration can improve the ease of installation when fastening and fixing a thin finishing material to a thick base material.
The base material also has a first pilot hole and a second pilot hole that is larger than the second screw hole portion. This eliminates the need to provide a pilot hole in the base material with the same diameter as the small-diameter second screw hole portion. This makes it possible to pre-machine the first pilot hole and the second pilot hole in the base material at the factory. The second pilot hole has a diameter that allows the small-diameter second screw member to pass through without being threaded, so the small-diameter second screw member can be installed in the same condition as if the base material had a pilot hole.

1 is an overall perspective view of a finishing material fixing structure according to the present embodiment; 1 的上水面部分的大小图。 FIG. 1 shows the above-water side of the mounting bracket for the finishing material on the base material. 1 的上水面部分的大小图。 FIG. 1 shows the above-water side of the finishing material fastening bracket. FIG. 1A and 1B are component diagrams of a finishing material fixing fixture, in which (a) is a plan view and (b) is a side view. 3A is a side view (in the direction of the arrow in FIG. 3) of the attachment of the finishing material fixing bracket to the base material, and FIG. 3B is a side view of the attachment of the finishing material to the finishing material fixing bracket. 1. FIG. 4 is an enlarged perspective view of the underwater portion of FIG. 1, showing the attachment of the finishing material to the base material.

Hereinafter, this embodiment will be described in detail with reference to the drawings.
1 to 7 are provided to explain this embodiment.

<Configuration> The configuration of this example is explained below.

As shown in Figures 1 (through 3), a thin finishing material 2 is placed over a thick base material 1 and fastened from above to form a finishing material fixing structure.

Here, the base material 1 is a component that serves as a base for attaching the finishing material 2. The base material 1 is made of metal. A sturdy, thick component is used for the base material 1.

Finishing material 2 is a decorative component that is exposed to the outside and forms the finished surface (the surface of the product). Finishing material 2 is made of metal. Relatively thin components are used for finishing material 2. Differences in thickness occur between base material 1 and finishing material 2 due to differences in the required functions. This difference in thickness (particularly when base material 1 is thick) can cause problems such as poor workability during fastening.

The finishing material fixing structure is a structure for fixing the finishing material 2 to the base material 1. In this embodiment, the finishing material fixing structure is a structure that fixes the material by fastening.

In addition to the basic configuration described above, this embodiment may also have the following configuration:

(1) In the finishing material fixing structure,
As shown in FIGS. 2 and 3, a finishing material fixing metal fitting 11 having a thickness intermediate between that of the base material 1 and the finishing material 2 is interposed between the base material 1 and the finishing material 2 .
As shown in FIG. 4 (FIG. 5), the finishing material fixing fixture 11 has a large-diameter first screw hole portion 12 and a small-diameter second screw hole portion 13.
As shown in Figures 2 and 6(a) and (b), the finishing material fixing bracket 11 is fastened and fixed onto the base material 1 by passing a large-diameter first screw member 14 through a large-diameter first screw hole portion 12.
As shown in Figures 3 and 6 (b), the finishing material 2 placed on the finishing material fixing bracket 11 is fastened and fixed to the small-diameter second screw hole portion 13 of the finishing material fixing bracket 11 with a small-diameter second screw member 15.

Here, the intermediate thickness means that the finishing material fixing bracket 11 is composed of a bracket body 11a that is thinner than the thick base material 1 and thicker than the thin finishing material 2.

The finishing material fixing bracket 11 is a bracket that is installed between the base material 1 and the finishing material 2, indirectly fixing the base material 1 and the finishing material 2 together. In this embodiment, the finishing material fixing bracket 11 is a pilot hole conversion bracket equipped with a small-diameter second screw hole portion 13, which is difficult to machine and form in a factory for thick base material 1.

The large-diameter first screw hole 12 is a through-hole with approximately the same diameter as the large-diameter first screw member 14, and is used to thread the large-diameter first screw member 14 into the base material 1. The large-diameter first screw hole 12 only needs to be able to accommodate the large-diameter first screw member 14, and may be a screw hole with a female thread or a simple through-hole without a female thread. In this embodiment, the large-diameter first screw hole 12 is an insertion hole with a diameter slightly larger than the large-diameter first screw member 14.

The small-diameter second screw hole 13 is a through-hole with approximately the same diameter as the small-diameter second screw member 15, for threading the small-diameter second screw member 15. The small-diameter second screw hole 13 may be a screw hole with a female thread, or a simple through-hole without a female thread, as long as it can threadably engage the small-diameter second screw member 15. In this embodiment, the small-diameter second screw hole 13 is a fixing hole with a diameter slightly smaller than the small-diameter second screw member 15.

The finishing material fixing bracket 11 is manufactured, for example, by press molding. The large-diameter first screw hole 12 and the small-diameter second screw hole 13 are formed during press molding.

The large-diameter first screw member 14 is a fastening member having a body portion 14a with approximately the same diameter as the large-diameter first screw hole portion 12. The large-diameter first screw member 14 is, for example, a drill screw that can be used for drilling and threading. A drill screw is a screw with a male thread on the outer periphery and a drill bit at the tip.

The small-diameter second screw member 15 is a fastening member having a body portion 15a with approximately the same diameter as the small-diameter second screw hole portion 13. The small-diameter second screw member 15 is, for example, a drill screw that can be used for drilling and threading. A drill screw is a screw with a male thread on the outer periphery and a drill bit at the tip.

The finishing material 2 may be pre-formed with a pilot hole 2a for passing the small-diameter second screw member 15 at a position that coincides with the small-diameter second screw hole portion 13. The finishing material 2 has a diameter that allows the body portion 15a of the small-diameter second screw member 15 to pass through but not the head portion 15b. In this embodiment, the pilot hole 2a has a diameter slightly larger than the small-diameter second screw hole portion 13.

(2) In the finishing material fixing structure,
The finishing material fixing bracket 11 is
The first portion 21 having the large diameter first screw hole 12 is provided with respect to the second portion 22 having the small diameter second screw hole 13.
It may be lower than the head 14 b of the large-diameter first screw member 14 .

Here, the first portion 21 is the portion of the finishing material fixing bracket 11 that is attached to the base material 1. The first portion 21 is a flat contact surface that is placed in contact with the top surface of the base material 1. The bottom surface of the first portion 21 is in contact with the top surface of the base material 1.

The second portion 22 is the portion of the finishing material fixing bracket 11 where the finishing material 2 is attached. The second portion 22 is a flat abutment surface against which the underside of the finishing material 2 abuts. The underside of the finishing material 2 abuts against the upper surface of the second portion 22. The lower surface of the second portion 22 is spaced apart from the upper surface of the base material 1.

The head 14b is a bulging operating portion located at one end (upper end) of the large-diameter first screw member 14. The head 14b is formed with a + or - groove for operation with a tool, for example. The head 14b protrudes laterally from the body 14a, providing a locking function for the fastened object (the finishing material fixing bracket 11 or the base material 1).

The small-diameter second screw member 15 also has a similar head 15b. It is preferable that the head 15b of the small-diameter second screw member 15 be flat so that it is not noticeable.

(3) In the finishing material fixing structure,
The base material 1 may have a first pilot hole 31 for attaching a large-diameter first screw member 14 at a position that coincides with the large-diameter first screw hole portion 12.
In addition, the base material 1 may have a second pilot hole 32 larger than the small-diameter second screw hole portion 13 at a position that coincides with the small-diameter second screw hole portion 13.

Here, the first pilot hole 31 is a through-hole portion with approximately the same diameter as the large-diameter first screw member 14, for threading the large-diameter first screw member 14. The first pilot hole 31 is connected to the large-diameter first screw hole portion 12. The first pilot hole 31 may be a screw hole with a female thread formed therein, or may be a simple through-hole without a female thread, as long as it can threadably engage the first screw member 14. In this embodiment, the first pilot hole 31 is a fixing hole with a diameter slightly smaller than the large-diameter first screw member 14. The first pilot hole 31 has a diameter slightly smaller than the large-diameter first screw hole portion 12.

The second pilot hole 32 is a through-hole with a larger diameter than the small-diameter second screw member 15, allowing the small-diameter second screw member 15 to pass through without any trouble. The second pilot hole 32 is connected to the small-diameter second screw hole 13. The second pilot hole 32 is simply a through-hole without a female thread. In this embodiment, the second pilot hole 32 is an insertion hole with a larger diameter than the small-diameter second screw member 15. The second pilot hole 32 has a larger diameter than the small-diameter second screw hole 13.

The first pilot hole 31 and the second pilot hole 32 are pre-machined in the base material 1 at a factory. The second pilot hole 32 has a diameter that can be easily machined at the factory. The second pilot hole 32 can be, for example, approximately the same diameter as the first pilot hole 31 or slightly smaller.

In this embodiment, the second pilot hole 32 is the smallest size that can be machined into the base material 1 in a factory. The second pilot hole 32 also has the same diameter as the first pilot hole 31.

As a more specific example, suppose the thickness of the base material 1 is 4.5 mm, the thickness of the finishing material 2 is 0.3-0.5 mm, and the thickness of the finishing material fixing bracket 11 is 1.2 mm. An M6 drill screw is used for the first screw member 14, and an M5 drill screw is used for the second screw member 15. The diameter of the first pilot hole 31 can be 6.5Φ, the diameter of the second pilot hole 32 can be 4Φ, the diameter of the first pilot hole 31 can be 5Φ, and the diameter of the second pilot hole 32 can be 5Φ. However, the dimensional relationships are not limited to the above. If the thickness of the base material 1 is 4.5 mm, the smallest size of the hole that can be machined in a factory is 5Φ.

(4) In the finishing material fixing structure,
As shown in FIG. 1 (FIGS. 2 and 3), the base material 1 may be a side frame 42 of a roof panel 41.
The finishing material 2 may be a joint cover 44 that covers the joints 43 between the roof panels 41.
The finishing material fixing bracket 11 may be attached to the above-water side 45 of the side frame 42 and the joint cover 44 .

Here, the roof panels 41 are panels that make up the roof of a building. The roof panels 41 are construction materials that can be used to directly construct a roof by simply placing them side by side on top of the main body of the building. The roof panels 41 are in the shape of a long, narrow rectangle.

The roof panel 41 is primarily composed of a pair of side frames 42 and a base steel plate 46. The pair of side frames 42 are vertical frame members that form both sides of the roof panel 41 in the longitudinal direction 47. The base steel plate 46 is installed between the pair of side frames 42.

The side frame 42 is a metal member with an inward C-shaped cross section. The side frame 42 is a thick member with a vertically oriented web portion 42a and upper and lower flange portions 42b that extend laterally from the upper and lower edges of the web portion 42a toward the inside of the roof panel 41.

The base steel plate 46 is a thin metal plate that forms the surface of the roof panel 41. The base steel plate 46 has a flat portion 46a that forms the surface of the roof panel 41, raised portions 46b that rise from both side edges of the flat portion 46a, and flange portions 46c that extend outward from the upper edge of the raised portions 46b. The flange portions 46c of the base steel plate 46 are positioned in abutting contact with the flange portions 42b of the side frames 42. The flange portions 46c of the base steel plate 46 are approximately the same width as the flange portions 42b of the side frames 42.

The first pilot hole 31 and the second pilot hole 32 are formed with approximately the same diameter at positions that match both the upper flange portion 42b of the side frame 42 and the flange portion 42b of the base steel plate 46. However, the thickness of the side frame 42 places restrictions on the diameter of the second pilot hole 32.

A solar panel 48 that generates electricity using sunlight can be installed on top of the base steel plate 46.

The joints 43 are gaps formed at the joints between the roof panels 41. The joints 43 are formed between both sides of adjacent roof panels 41 in the longitudinal direction 47.

The joint cover 44 is a metal cover member that covers the joints 43. When attached to the roof of a building on-site, the joint cover 44 seals the joints 43, waterproofing the roof, completing the roof and improving the appearance quality of the roof, thereby becoming the finishing material 2. It is preferable that the joint cover 44 be made of a thin plate material of the same material and thickness as the base steel plate 46.

The joint cover 44 is a long member that is approximately the same width as the joint portion 43 and approximately the same length as the side frame 42. The joint cover 44 is a downward-facing C-shaped cross-section member that is placed over the rising portions 46b of the roof panel 41. The joint cover 44 has an upper surface 44a that is wide enough to cover the joint portion 43, and a pair of left and right side surfaces 44b that extend downward from both side edges of the upper surface 44a.

The joint cover 44 is attached to the joint 43 at a slight incline to create a gentle drainage gradient. In this case, the above-water side 45 is the higher side, and the below-water side 49 is the lower side.

The joint cover 44 raises the above-water side 45 by installing a finishing material fixing bracket 11 on the above-water side 45. This allows the finishing material fixing bracket 11 to function as a height adjustment spacer.

As shown in Figure 7, a water-repellent eaves edge trimming member 51 is attached to the end of the underwater side 49 of the joint cover 44. The water-repellent eaves edge trimming member 51 is engaged laterally from the underwater side 49 to a rising portion 46d formed on the end surface of the base steel plate 46, and is fixed laterally from the underwater side 49 to the rising portion 46d with rivets 52.

(5) The finishing material fixing metal fittings 11 interposed between the thick base material 1 and the thin finishing material 2 are
It has a metal fitting body 11a with a thickness intermediate between that of the base material 1 and the finishing material 2.
The metal fitting body 11 a has a first portion 21 that abuts the upper surface of the base material 1 and a second portion 22 that abuts the lower surface of the finishing material 2 .
The first portion 21 has a first screw hole 12 with a large diameter, and the second portion 22 has a second screw hole 13 with a small diameter.
The first portion 21 is lower than the head 14 b of the large-diameter first screw member 14 relative to the second portion 22 .

Here, the finishing material fixing bracket 11 is a bracket used in a finishing material fixing structure. The finishing material fixing bracket 11 is formed, for example, from a pressed bracket body 11a. The finishing material fixing bracket 11 is a roughly M-shaped, rectangular bracket with two peaks and a valley between them.

The two peaks each form a second portion 22. The valleys each form a first portion 21 located between the two second portions 22. The first portion 21 is parallel to the second portion 22. The two second portions 22 can each be the same size and height. One or both of the two second portions 22 can be used to secure the finishing material 2.

A step portion 61 is formed between the first portion 21 and the second portion 22. The step portion 61 has a height greater than the head portion 14b of the large-diameter first screw member 14 (the height of the step portion 61 is greater than the head portion 14b of the large-diameter first screw member 14).

The ends of the two second sections 22 opposite the step sections 61 form support legs 62 that are approximately the same height as the step sections 61. When the underside of the first sections 21 abuts against the top surface of the base material 1 (and the base steel plate 46), the lower ends of the support legs 62 abut against the top surface of the base material 1, providing stable support for the finishing material fixing bracket 11.

The step portion 61 and the support leg portion 62 may be formed at a right angle to the first portion 21 and the second portion 22. Rounded portions may be formed at the corners between the step portion 61 and the support leg portion 62 and the first portion 21 and the second portion 22.

<Function> The function of this embodiment is explained below.

A thick base material 1 is covered with a thin finishing material 2 and fastened from above. In this case, it is desirable to fasten it in an attractive manner using small-diameter screws that match the thin finishing material 2 in order to improve the finish quality.

However, if the base material 1 to which the thin finishing material 2 is fixed is thick, it is difficult to pre-machine pilot holes for small-diameter screw members in the thick base material 1 at the factory. This is because the tools used to drill the pilot holes become thinner and smaller, and the thicker the base material 1 and the smaller the diameter of the pilot holes, the lower the durability of the tools, making this impractical.

As a result, because it is not possible to pre-drill small-diameter pilot holes in the base material 1, the process of covering the thick base material 1 with the thin finishing material 2 and fastening them from above is time-consuming. Therefore, some ingenuity is needed to improve the ease of installation in this case.

In this embodiment, the above-mentioned configuration improves installation workability, etc.

In other words, configurations such as using a finishing material fixing bracket 11 or drilling a second pilot hole 32 in the base material 1 are effective.

For example, the roof panel 41 is manufactured in a factory, and the finishing material fixing brackets 11 are attached to the roof panel 41 in advance.

The roof panel 41 is manufactured by attaching a sheathing board between a pair of side frames 42, and then covering the sheathing board and side frames 42 with a base steel plate 46. The finishing material fixing brackets 11 are attached to the abovewater side 45 of the roof panel 41. In this embodiment, the side frames 42 and the base steel plate 46 (mainly the side frames 42) form the base material 1.

Specifically, the first portion 21 of the finishing material fixing bracket 11 is installed from above on the upper flange portion 42b of the side frame 42 and the flange portion 46c of the base steel plate 46. The first large-diameter screw member 14 is then fastened by threading it from above through the first large-diameter screw hole portion 12 and into the first pilot hole 31.

Then, at the construction site, the roof panels 41 are lined up and installed on top of the main body of the building, and joint covers 44, which serve as the finishing material 2, are attached to the joints 43 between the roof panels 41.

Specifically, on the belowwater side 49 of the joint cover 44, the eaves edge water return member 51 is fixed to the rising portion 46d of the end face of the base steel plate 46 with rivets 52. On the abovewater side 45, the joint cover 44 is fastened from above to the finish material fixing bracket 11 with small-diameter second screw members 15. At this time, the small-diameter second screw members 15 are passed through second pilot holes 32 formed in the upper flange portion 42b of the side frame 42 and the flange portion 46c of the base steel plate 46.

As a result, the joint cover 44 is easily fixed to the roof panel 41. Furthermore, by making it possible to use a small-diameter second screw member 15, the appearance quality of the joint cover 44 attachment area and the entire roof can be improved.

<Effects> This embodiment provides the following effects:

(Effect 1) In the finishing material fixing structure, a finishing material fixing bracket 11, which has a thickness intermediate between that of the base material 1 and the finishing material 2, is fastened to the thick base material 1 with a large-diameter first screw member 14 through a large-diameter first screw hole 12. In this state, the finishing material 2 is placed over the base material 1 and the finishing material fixing bracket 11. As a result, the finishing material fixing bracket 11 and the large-diameter first screw member 14 are hidden by the finishing material 2 so that they are not visible from the outside. The finishing material 2 is then fastened to the finishing material fixing bracket 11 by threading a small-diameter second screw member 15 into the small-diameter second screw hole 13. As a result, the finishing material 2 is indirectly fixed to the base material 1 via the finishing material fixing bracket 11.

The finishing material fixing bracket 11 has a thickness intermediate between that of the base material 1 and the finishing material 2, so it can be easily, reliably, and firmly fastened to the base material 1 using the large-diameter first screw member 14. Furthermore, the finishing material 2 can be easily, reliably, and firmly fastened to the finishing material fixing bracket 11 using the small-diameter second screw member 15. This improves the ease of installation when fastening a thin finishing material 2 to a thick base material 1, ensuring installation strength and reliability.

In this case, the finishing material fixing bracket 11 may have a large-diameter first screw hole 12 for passing a large-diameter first screw member 14, and a small-diameter second screw hole 13 for threading a small-diameter second screw member 15. This makes it easier to fix the finishing material fixing bracket 11 to the base material 1 with the large-diameter first screw member 14 through the large-diameter first screw hole 12, and to fix the finishing material 2 to the finishing material fixing bracket 11 by threading the small-diameter second screw member 15 into the small-diameter second screw hole 13. Because the finishing material fixing bracket 11 is a relatively small bracket, the first screw hole 12 and the second screw hole 13 can be easily formed, for example, by press working.

Furthermore, if the finishing material fixing bracket 11 is fastened to the base material 1 in advance at the factory, then all that is required at the site is to fix the finishing material 2 to the fixing bracket's small-diameter second screw hole 13 with a small-diameter second screw member 15, which saves time and effort. Furthermore, by using a small-diameter second screw member 15 that matches the finishing material 2 to attach the finishing material 2 to the finishing material fixing bracket 11, the quality of the finish can be ensured and improved.

(Effect 2) In the finishing material fixing structure, the finishing material fixing bracket 11 may be configured so that the first portion 21, which has the large-diameter first screw hole 12, is lower than the head 14b of the large-diameter first screw member 14 relative to the second portion 22, which has the small-diameter second screw hole 13. This allows the finishing material 2 to be attached to the second portion 22, which is higher than the head 14b of the large-diameter first screw member 14. This prevents the head 14b of the large-diameter first screw member 14 from interfering with the fixing of the finishing material 2. Therefore, the finishing material 2 can be attached without any problems even when using the finishing material fixing bracket 11.

(Effect 3) In the finishing material fixing structure, the base material 1 may have a first pilot hole 31 for attaching the large-diameter first screw member 14 at a position that coincides with the large-diameter first screw hole 12, and a second pilot hole 32 larger than the small-diameter second screw hole 13 at a position that coincides with the small-diameter second screw hole 13. This eliminates the need to drill a pilot hole in the base material 1 with the same diameter as the small-diameter second screw hole 13. This makes it possible to pre-machine the first pilot hole 31 and second pilot hole 32 in the base material 1 at the factory. Furthermore, because the second pilot hole 32 has a diameter that allows the small-diameter second screw member 15 to pass through without threading, the small-diameter second screw member 15 can be attached in the same condition as if the base material 1 had a pilot hole.

(Effect 4) The finishing material fixing structure may use the base material 1 as the side frame 42 of the roof panel 41, and the finishing material 2 as a joint cover 44 that covers the joints 43 between the roof panels 41. This allows the joints 43 between the roof panels 41 to be covered with the joint cover 44, and the joint cover 44 can be fixed to the joints 43 with small-diameter screw members via the finishing material fixing brackets 11.

In the finishing material fixing structure, the finishing material fixing brackets 11 may be attached to the above-water side 45 of the side frame 42 and joint cover 44. This allows the above-water side 45 to be elevated by the finishing material fixing brackets 11, creating a slope in the joint cover 44.

(Effect 5) With the above-described configuration, the finishing material fixing bracket 11 can achieve the same effects as the above-described finishing material fixing structure.

REFERENCE SIGNS LIST 1 Base material 2 Finishing material 11 Finishing material fixing metal fitting 11a Metal fitting body 12 Large diameter first screw hole 13 Small diameter second screw hole 14 Large diameter first screw member 14b Head 15 Small diameter second screw member 15b Head 21 First part 22 Second part 31 First pilot hole 32 Second pilot hole 41 Roof panel 42 Side frame 43 Joint part 44 Joint cover 45 Above water side

Claims (4)

A finishing material fixing structure in which a thin finishing material is placed on a thick base material and fastened from above,
A finishing material fixing metal fitting having a thickness intermediate between that of the base material and that of the finishing material is interposed between the base material and the finishing material,
The finishing material fixing fixture has a large-diameter first screw hole portion and a small-diameter second screw hole portion,
The finishing material fixing fixture is fastened and fixed onto the base material by passing a large-diameter first screw member through the large-diameter first screw hole portion,
The finishing material placed on the finishing material fixing fixture is fastened and fixed to the second small-diameter screw hole portion of the finishing material fixing fixture with a second small-diameter screw member ,
The base material is
a first pilot hole for attaching the first screw member having a large diameter at a position that matches the first screw hole portion having a large diameter;
A finishing material fixing structure characterized by having a second pilot hole larger than the small diameter second screw hole portion at a position that coincides with the small diameter second screw hole portion . The finishing material fixing structure according to claim 1,
The finishing material fixing bracket is
A first portion having a large diameter first screw hole is provided with respect to a second portion having a small diameter second screw hole,
A finishing material fixing structure characterized in that it is lower than the head of the first screw member with a large diameter. The finishing material fixing structure according to claim 1 or 2 ,
The base material is a side frame of a roof panel,
The finishing material is a joint cover that covers the joints between the roof panels,
A finishing material fixing structure characterized in that the finishing material fixing fittings are attached to the above-water side of the side frame and the joint cover. A finishing material fixing bracket interposed between a thick base material and a thin finishing material,
The metal fitting body has a thickness intermediate between that of the base material and that of the finishing material,
The metal fitting body has one valley-shaped first portion that contacts the upper surface of the base material, and two mountain-shaped second portions that are located on both sides of the first portion and contact the lower surface of the finishing material,
the first portion has a large-diameter first screw hole at a position that matches a first pilot hole that is provided in the base material and through which a large-diameter first screw member is attached from above , and the second portion has a second screw hole at a top position that matches a second pilot hole that is provided in the base material and through which a small-diameter second screw member is inserted from above, the second screw hole having a smaller diameter than the second pilot hole and through which the second screw member is attached ,
A finishing material fixing bracket characterized in that the first portion is lower than the head of the first screw member, which has a larger diameter, relative to the second portion.