JP7655719B2 - Ventilation structure and its construction method - Google Patents

Description

The present invention relates to a ventilation structure around the edge of a roof to bring outside air inside and a method for constructing the same.

It is known to provide a ventilation structure around the edge of a roof (see, for example, Patent Document 1).

Patent document 1 discloses a configuration in which a winding drain ventilation path extending vertically from the ventilation opening entrance toward the interior of the building is provided around the periphery of the roof.

JP 2011-99220 A

It is common to lengthen the ventilation path to prevent rainwater from entering it. In order to lengthen the ventilation path, the path is formed to straddle the mounting position of the support member that supports it on the roof. In this case, the support member is attached to the roof, and then the path forming member that forms the ventilation path is attached to the support member. This causes the problem that workers have to do more work on the roof.

The present invention aims to provide a ventilation structure and a method for constructing the same that can reduce the amount of work that workers have to do on the roof and improve workability.

In order to achieve the above object, the ventilation structure of the present invention comprises:
A ventilation structure around the edge of a roof to bring outside air inside,
An integral path forming member having a ventilation path formed therein in advance;
a support member attached to a mounting bracket provided on a periphery of the roof panel and supporting the path forming member;
The support member has a side parapet attached to a side thereof,
The path forming member is integrated by attaching a second path forming member, a third path forming member, and a fourth path forming member, which divide the inner space and form the ventilation path meandering up and down, to the inside of a first path forming member that forms the outer shape of the ventilation path,
The path forming member is attached to the lower part of the side parapet, and is disposed under the support member,
The path forming member is characterized in that it is positioned below the mounting position of the support member by the mounting bracket.

Here, in the ventilation structure of the present invention, the path forming member is provided with a side slit that opens in a direction along the outer edge of the roof panel with respect to the intrusion direction of the outside air from the side of the side parapet toward the side of the roof panel ,
The side slit may be formed by a through hole and a bridge having the side slit and covering the through hole .

In addition, in the ventilation structure of the present invention, an upper parapet may be attached to the upper part of the support member so as to slope obliquely upward from near the upper end of the side parapet toward the roof panel .

Furthermore, the method for constructing a ventilation structure of the present invention is a method for constructing a ventilation structure for a periphery of a roof that takes in outside air, comprising the steps of:
A second path forming member, a third path forming member, and a fourth path forming member which divide the inner space are attached to the inside of a first path forming member which defines the outer shape of the ventilation path, and the ventilation path which meanders upward and downward is formed in advance as an integrated path forming member;
a ventilation path installation step of attaching a side parapet to a side of a support member and attaching the path forming member to a lower portion of the side parapet, thereby disposing the path forming member under the lower portion of the support member;
a support member mounting step of mounting the support member to which the path forming member and the side parapet are attached, to a mounting fixture provided on a periphery of the roof panel at a mounting position above the path forming member;
The method may further include a parapet attachment step of attaching an upper parapet from above to the support member attached to the peripheral edge of the roof panel.

The ventilation structure of the present invention thus constructed includes an integral path forming member in which a ventilation path is formed in advance, and a support member attached to a mounting bracket provided on the periphery of a roof panel to support the path forming member, the support member having a side parapet attached to its side, and the path forming member is integrated by attaching a second path forming member, a third path forming member, and a fourth path forming member, which divide the inner space and form the ventilation path that meanders up and down, to the inside of a first path forming member that forms the outer shape of the ventilation path, and the path forming member is attached to the lower part of the side parapet, so that it is located at the lower part of the support member, and the path forming member is located below the mounting position of the support member by the mounting bracket. Therefore, a ventilation structure for the periphery of a roof can be formed in which the integral path forming member in which a ventilation path is formed in advance does not cross the mounting position of the support member to the roof. As a result, the support member to which the ventilation path forming member and the side parapet are attached can be attached to the periphery of a roof panel. This reduces the amount of work that workers need to do on the roof, improving workability.

In addition, the path forming member is provided with a side slit that opens in a direction along the outer edge of the roof panel with respect to the intrusion direction of outside air from the side parapet side toward the roof panel side , and when the side slit is formed of a through hole and a bridge having the side slit and covering the through hole , it is possible to prevent water from entering in the direction of the intrusion of outside air and to ensure a ventilation path. Therefore, it is possible to shorten the ventilation path while maintaining its waterproofness.

In addition, when an upper parapet is attached to the top of the support member so as to slope diagonally upward from the vicinity of the upper end of the side parapet toward the roof panel , the upper parapet can be attached after the support member to which the side parapet is attached is attached to the periphery of the roof. This reduces the amount of work that workers have to do on the roof, improving workability.

Furthermore, in the method for constructing the ventilation structure of the present invention,
A second path forming member, a third path forming member, and a fourth path forming member which divide the inner space are attached to the inside of a first path forming member which defines the outer shape of the ventilation path, and the ventilation path which meanders upward and downward is formed in advance as an integrated path forming member;
a ventilation path installation step of attaching a side parapet to a side of a support member and attaching the path forming member to a lower portion of the side parapet, thereby disposing the path forming member under the lower portion of the support member;
a support member mounting step of mounting the support member to which the path forming member and the side parapet are attached to a mounting fixture provided on a periphery of a roof panel at a mounting position above the path forming member;
If the method includes a parapet installation process of attaching an upper parapet from above to the support member attached to the peripheral edge of the roof panel, the work that workers have to do on the roof can be reduced, improving workability.

FIG. 2 is a perspective view showing the configuration of the unit building of the first embodiment. FIG. 2 is an exploded perspective view showing the gable decorative material of Example 1. FIG. 2 is a cross-sectional view showing the gable decorative material of Example 1. FIG. 2 is a perspective view showing a support member according to the first embodiment. 5A and 5B are diagrams showing a side slit of a path forming member of Example 1, in which FIG. 5A is a plan view and FIG. 5B is a cross-sectional view. 10 is an exploded cross-sectional view for explaining a ventilation path installation process of the first embodiment. FIG. 10 is an exploded cross-sectional view for explaining a support member mounting step of the first embodiment. FIG. FIG. 13 is an exploded perspective view for explaining a support member mounting step in the first embodiment. FIG. 2 is an exploded cross-sectional view for explaining the parapet installation process of the first embodiment. FIG. 11 is an exploded cross-sectional view for explaining a method for constructing a conventional ventilation structure. FIG. 11 is an exploded cross-sectional view for explaining a method for constructing a conventional ventilation structure. FIG. 11 is an exploded cross-sectional view for explaining a method for constructing a conventional ventilation structure.

Below, an embodiment of the ventilation structure and method of constructing the same according to the present invention will be described based on Example 1 shown in the drawings.

The ventilation structure and its construction method in Example 1 are applied to a unit building that is constructed by transporting building units manufactured in advance at a factory to a construction site and arranging and assembling multiple building units at the construction site.

[Unit building composition]
Fig. 1 is a perspective view showing the configuration of a unit building of Example 1. The configuration of the unit building of Example 1 will be described below.

As shown in FIG. 1, the unit building 1 is constructed by assembling a first floor building unit 3, a second floor building unit 3, and roof panels 5 and 6 on a foundation 2.

The roof panel 5 is installed in a flat position with no inclination so as to cover the center of the unit building 1. The roof panel 5 forms a flat roof with no inclination.

Roof panel 6 is installed in an inclined position around roof panel 5. Roof panel 6 forms a sloped roof.

A gable decorative material 10 is installed on the periphery of the roof panel 5 to prevent rain from blowing into the unit building 1. The gable decorative material 10 is positioned so as to follow the outer edge of the roof panel 5.

[Configuration of gable decorative material]
Fig. 2 is an exploded perspective view showing the gable decorative material 10 of Example 1. Fig. 3 is a cross-sectional view showing the gable decorative material 10 of Example 1. Fig. 4 is a perspective view showing the support member of Example 1. Fig. 5 is a diagram showing the side slits of the path forming member of Example 1, Fig. 5(a) shows a plan view and Fig. 5(b) shows a cross-sectional view. The configuration of the gable decorative material 10 of Example 1 will be described below.

As shown in FIG. 2, the gable decorative material 10 is attached around the roof panel 5 to prevent rain from blowing into the unit building 1 and to draw in outside air to ventilate the attic of the unit building 1, etc.

As shown in FIG. 3, the gable decorative material 10 includes a support member 11, a path forming member 20 that forms a ventilation path, and a parapet 30 that includes a side parapet 31 and an upper parapet 32.

(Support member)
2, a plurality of support members 11 are disposed at predetermined intervals on the periphery of the roof panel 5. The support members 11 are installed in a perpendicular position to the tip surface of the roof panel 5.

As shown in Figures 3 and 4, the support member 11 is formed by bending a metal plate, and includes a main body portion 12, a first support portion 13 and a second support portion 14 formed in the front portion of the main body portion 12, a third support portion 15 formed in the upper portion of the main body portion 12, and a fourth support portion 16 formed in the rear portion of the main body portion 12.

The water return passage member 8, which has a generally U-shaped cross section and extends along the periphery of the roof panel 5, is attached to the first support portion 13 with rivets. The first support portion 13 is formed with a through hole 13a for the bolt 41 and a through hole 13b for the screw S formed above the through hole 13a. Like the first support portion 13, the water return passage member 8 is formed with a through hole for the bolt 41 and a through hole for the screw S.

The bolt 41 is installed in the mounting bracket 7 with its tip facing the outside of the unit building 1. The bolt 41 may be fixed to the mounting bracket 7 by, for example, welding.

In the ventilation structure configured in this manner, the first support portion 13 and the water return passage member 8 are attached to the mounting bracket 7 by the bolts 41, nuts 42, and screws S. The mounting position P1 (P) where the first support portion 13 and the water return passage member 8 are attached to the mounting bracket 7 by the bolts 41 and nuts 42, and the mounting position P2 (P) where they are attached to the mounting bracket 7 by the screws S, are formed above the path forming member 20.

The third support portion 15 has multiple through holes 15a (two in Example 1) for screws S. The upper parapet 32 is attached to the third support portion 15 by abutting the upper parapet 32 against the third support portion 15 and driving the screws S from above. In other words, the upper parapet 32 is attached to the top of the support member 11.

The fourth support portion 16 is formed with a through hole 16a (one in Example 1) for a screw S and a through hole 16b (one in Example 1) for a rivet D. The side parapet 31 is attached to the fourth support portion 16 by abutting the side parapet 31 against the fourth support portion 16, driving the screw S from above, and driving the rivet D from the side. In other words, the side parapet 31 is attached to the side of the support member 11.

(Parapet)
As shown in FIG. 3 , the parapet 30 is formed by a side parapet 31 and an upper parapet 32 so as to have a substantially L-shaped cross section.

The side parapet 31 is formed in a plate shape and is installed in an upright position. The upper parapet 32 is formed in a plate shape and is formed in a position that slopes diagonally upward from near the upper end of the side parapet 31. The upper parapet 32 is attached to the support member 11 with a screw S. The side parapet 31 is attached to the support member 11 with a screw S and a rivet D.

A path forming member 20 is attached to the lower part of the side parapet 31 by a rivet D. An Eptsealer 51 is provided as a waterproofing material between the upper parapet 32 and the side parapet 31. An Eptsealer 53 is provided as a waterproofing material between the upper parapet 32 and the roof panel 5.

(Path forming member)
3, the path forming member 20 is formed below the attachment positions P1 and P2. The path forming member 20 is composed of a first path forming member 21, a second path forming member 22, a third path forming member 23, and a fourth path forming member 24, and forms a ventilation path W. The ventilation path W is formed so as to meander up and down.

The first path forming member 21 is provided at the bottom of the path forming member 20. The first path forming member 21 has a side slit 21a, which will be described later. The side slit 21a constitutes a ventilation opening for the ventilation path W.

The second path forming member 22 is provided at the rear of the path forming member 20 and above the first path forming member 21 so as to block the ventilation path W. The second path forming member 22 has a lateral slit 22a, which will be described later.

The third path forming member 23 is provided at the rear of the path forming member 20 and above the second path forming member 22. The fourth path forming member 24 is provided in front of the third path forming member 23 and above the first path forming member 21.

The second path forming member 22, the third path forming member 23, and the fourth path forming member 24 are attached to the first path forming member 21 by rivets D and integrated together. The integrated path forming member 20 is attached to the side parapet 31 by rivets D.

An EPTSEALER 52 is provided as a waterproofing material between the path forming member 20 and the roof panel 6. A spacer member 9 is provided between the first path forming member 21 and the water return passage member 8.

(Side slit)
5(a) and 5(b), the side slits 21a, 22a are formed by a bridge portion B that is shaped like a bridge and extends in the front-rear direction, and a through hole A that is formed below the bridge portion B. As a result, the side slits 21a, 22a have an opening C on the side relative to the direction in which outside air enters.

Each side slit 21a, 22a can be formed in a plurality of positions at a predetermined interval (e.g., 3 mm) in the vertical direction perpendicular to the longitudinal direction.

[How to construct a ventilation structure]
Fig. 6 is an exploded cross-sectional view for explaining the ventilation path installation step of the embodiment 1. Fig. 7 is an exploded cross-sectional view for explaining the support member installation step of the embodiment 1. Fig. 8 is an exploded perspective view for explaining the support member installation step of the embodiment 1. Fig. 9 is an exploded cross-sectional view for explaining the parapet installation step of the embodiment 1. A method for constructing the ventilation structure of the embodiment 1 will be described below.

(Ventilation path installation process)
6, in the ventilation path installation process, the side parapet 31 is attached to the support member 11 with screws S and rivets D. Also, the path forming member 20 is attached to the side parapet 31 with rivets D. Also, the water return passing member 8 is attached to the support member 11 with rivets D. In this way, the side parapet 31, the path forming member 20, and the water return passing member 8 are attached to the support member 11.

(Support member mounting process)
As shown in Figure 7, in the support member installation process, the support member 11 is moved from the outside to the inside of the roof panel 5, and the bolt 41 attached to the mounting bracket 7 provided on the periphery of the roof panel 5 is inserted into the through holes of the first support portion 13 and the water return passage member 8.

Then, with the water return passage member 8 in contact with the mounting bracket 7, as shown in FIG. 8, a worker M standing on the roof panel 5 tightens the nuts 42 and drives in the screws S to attach the support member 11 to the periphery of the roof panel 5. That is, the support member 11 with the path forming member 20 attached is attached to the mounting bracket 7 attached to the periphery of the roof panel 5 at mounting positions P1 and P2 above the path forming member 20.

At this time, the mounting position P1 where the nut 42 is attached to the bolt 41, and the mounting position P2 where the screw S is used for mounting, are located above the path forming member 20, so that the path forming member 20 does not interfere with the work of the worker M standing on the roof panel 5.

(Parapet installation process)
As shown in Figure 9, in the parapet installation process, the upper parapet 32 is placed from above on the support member 11 attached to the peripheral edge of the roof panel 5, and the upper parapet 32 is attached to the support member 11 with screws S.

At this time, an epsealer 51 is placed between the upper parapet 32 and the support member 11. An epsealer 53 is placed between the upper parapet 32 and the roof panel 5. Through the above steps, a ventilation structure is constructed around the periphery of the roof panel 5.

[Function of ventilation structure and its construction method]
The following describes the operation of the ventilation structure and the method of constructing the same according to the first embodiment. The ventilation structure according to the first embodiment is a ventilation structure for the periphery of a roof (roof panel 5) for taking in outside air. This ventilation structure includes a path forming member 20 that forms a ventilation path W, and a support member 11 that supports the path forming member 20, and the path forming member 20 is formed below the mounting position P of the support member 11 that is attached to the periphery of the roof (FIG. 3).

This allows for a ventilation structure on the periphery of the roof (roof panel 5) where the ventilation path W does not cross the mounting position P of the support member 11 to the roof (roof panel 5). Therefore, the support member 11 to which the ventilation path W is attached can be attached to the periphery of the roof (roof panel 5). This reduces the amount of work that worker M has to do on the roof (roof panel 5), improving workability.

In addition, the worker M can use tools or the like to attach the support member 11 to which the path forming member 20 is attached, from inside the periphery of the roof (roof panel 5), to the periphery of the roof (roof panel 5) at an attachment position P above the path forming member 20. In other words, the worker M does not need to work outside the periphery of the roof (roof panel 5). This ensures work safety and improves workability.

In the ventilation structure of Example 1, the path forming member 20 is provided with side slits 21a and 22a that open to the side relative to the direction in which outside air enters (Figure 5).

By providing the side slits 21a, 22a, it is possible to prevent water from entering in the direction of outside air intrusion and to secure the ventilation path W. Therefore, it is possible to shorten the ventilation path W while maintaining its waterproofness.

In the ventilation structure of Example 1, the support member 11 is provided with a side parapet 31 attached to the side of the support member 11 and an upper parapet 32 attached to the upper part of the support member 11 (Figure 3).

This allows the upper parapet 32 to be attached after the support member 11 with the side parapet 31 attached is attached to the periphery of the roof (roof panel 5). This reduces the amount of work that worker M has to do on the roof (roof panel 5), improving workability.

In addition, the worker M, who is inside the edge of the roof (roof panel 5), can install the upper parapet 32. In other words, the worker M does not need to work outside the edge of the roof (roof panel 5). As a result, the ventilation structure can be easily assembled by the worker M.

The method for constructing a ventilation structure in Example 1 is a method for constructing a ventilation structure on the periphery of a roof (roof panel 5) that takes in outside air. This construction method includes a path forming member attachment step of attaching a path forming member 20 that forms a ventilation path W to a support member 11, a support member attachment step of attaching the support member 11 to which the path forming member 20 is attached, to the periphery of the roof (roof panel 5) at an attachment position P above the path forming member 20, and a parapet attachment step of attaching a parapet (upper parapet 32) from above to the support member 11 attached to the periphery of the roof (roof panel 5) (Figures 6 to 9).

The conventional method of constructing a ventilation path involves attaching a support member 110 to the roof panel 5 at mounting positions P3 and P4 with screws S as shown in Figure 10, attaching a path forming member 120 across mounting positions P3 and P4 as shown in Figure 11, and then attaching a parapet 130 as shown in Figure 12. This lengthens the ventilation path W and prevents water from entering the ventilation path W. This causes the problem that worker M has to do more work on the roof.

In the first embodiment, the support member 11 to which the ventilation path W is attached can be attached to the periphery of the roof (roof panel 5) at attachment positions P1 and P2 above the ventilation path W. This reduces the amount of work that the worker M must do on the roof (roof panel 5), improving workability.

In addition, the worker M can use tools or the like to attach the support member 11 to which the path forming member 20 is attached, from inside the periphery of the roof (roof panel 5), to the periphery of the roof (roof panel 5) at an attachment position P above the path forming member 20. In other words, the worker M does not need to work outside the periphery of the roof (roof panel 5). This ensures work safety and improves workability.

The ventilation structure and method of constructing the same of the present disclosure have been described above based on Example 1. However, the specific configuration is not limited to this Example, and design changes and the like are permitted as long as they do not deviate from the gist of the invention according to each claim in the scope of the claims.

In the first embodiment, the side slits 21a and 22a are formed in a bridge shape. However, the side slits may be formed in any shape as long as they open to the side relative to the direction in which the outside air enters, and may be formed in a lance shape or louver shape, for example.

In Example 1, an example was shown in which the gable decorative material 10 was installed on the periphery of a flat roof panel 5 that had no inclination. However, the gable decorative material of the present invention can also be installed on the periphery of a sloped roof.

In Example 1, an example of applying the present invention to a unit building is shown. However, the present invention can also be applied to buildings constructed using other construction methods, such as the traditional construction method or the two-by-four construction method.

1 Unit building 5 Roof panel (example of roof)
REFERENCE SIGNS LIST 11 Support member 20 Path forming member 21a Side slit 22a Side slit 31 Side parapet 32 Upper parapet P1 Mounting position P2 Mounting position W Ventilation path

Claims (4)

A ventilation structure around the edge of a roof to bring outside air inside,
An integral path forming member having a ventilation path formed therein in advance;
a support member attached to a mounting bracket provided on a periphery of the roof panel and supporting the path forming member;
The support member has a side parapet attached to a side thereof,
The path forming member is integrated by attaching a second path forming member, a third path forming member, and a fourth path forming member, which divide the inner space and form the ventilation path meandering up and down, to the inside of a first path forming member that forms the outer shape of the ventilation path,
The path forming member is attached to the lower part of the side parapet, and is disposed under the support member,
The ventilation structure, wherein the path forming member is positioned below a mounting position of the support member by the mounting bracket. The path forming member is provided with a side slit that opens in a direction along the outer edge of the roof panel with respect to the intrusion direction of the outside air from the side of the side parapet toward the side of the roof panel,
The ventilation structure according to claim 1 , wherein the side slit is formed by a through hole and a bridge having the side slit and covering the through hole. 3. The ventilation structure according to claim 1, wherein an upper parapet is attached to an upper portion of the support member so as to incline obliquely upward from near the upper end of the side parapet toward the roof panel. A method for constructing a roof perimeter ventilation structure that takes in outside air, comprising the steps of:
A second path forming member, a third path forming member, and a fourth path forming member which divide the inner space are attached to the inside of a first path forming member which defines the outer shape of the ventilation path, and the ventilation path which meanders upward and downward is formed in advance as an integrated path forming member;
a ventilation path installation step of attaching a side parapet to a side of a support member and attaching the path forming member to a lower portion of the side parapet, thereby disposing the path forming member under the lower portion of the support member;
a support member mounting step of mounting the support member to which the path forming member and the side parapet are attached to a mounting fixture provided on a periphery of a roof panel at a mounting position above the path forming member;
a parapet installation step of installing an upper parapet from above to the support member attached to the peripheral edge of the roof panel.