JP2023063659A - Eave soffit ventilation structure and eave soffit ventilation member - Google Patents

Abstract

To provide an eave soffit ventilation structure and an eave soffit ventilation member which achieve improved fireproof performance.SOLUTION: An eave soffit ventilation 1 includes an eave soffit member 10 and a ventilation member 20. The eave soffit member 10 is composed of: a first vertical part 11; a first horizontal part 12 which has one end side connected to an upper end side of the first vertical part 11 and extends in a horizontal direction; a second vertical part 13 which has an upper end side connected to the other end side of the first horizontal part 12 and extends vertically downward; a second horizontal part 14 which has one end side connected to the lower end side of the second vertical part 13, extends in a horizontal direction so as to be separated from the first vertical part 11, and is formed with an opening 15; an outer piece 17 which continuously extends in a horizontal direction from the outer end of the second horizontal part 14, and is folded; and a third vertical part 16 which has a lower end continuously extending vertically upward to the outer piece 17. The ventilation member 20 is mounted between the inner surface of the second vertical part 13 and the inner surface of the third vertical part 16, and has a ventilation function.SELECTED DRAWING: Figure 2

Description

The present invention relates to an eaves ventilation structure and an eaves ventilation member, and more particularly to an eaves ventilation structure and an eaves ventilation member installed between an exterior wall material and a gable base material.

As an eaves ventilation structure installed in the eaves, there is one shown in Patent Document 1.

FIG. 9 is a schematic cross-sectional view of the conventional eaves ventilation structure shown in Patent Document 1, and FIG. 10 is a schematic end face showing the state of attachment to the eaves portion of the eaves ventilation structure shown in FIG. It is a diagram.

First, referring to FIG. 9, an eaves ventilation structure 90 is composed of an eaves member 60 formed by pressing a steel plate, and a ventilation member 70 made of synthetic resin and attached inside the eaves member 60. The eaves member 60 and the ventilation member 70 exhibiting air permeability and waterproof performance are integrated.

The eaves member 60 is formed in an elongated shape, and is connected to a first vertical portion 61 extending in the vertical direction and the upper end side of the first vertical portion 61, and extends horizontally outward (to the left in FIG. 9). A first horizontal portion 62 extending, a second vertical portion 63 connected to the outer side of the first horizontal portion 62 and extending vertically downward, and a second vertical portion 63 connected to the lower side of the second vertical portion 63 and horizontally extending outward. A second horizontal portion 64 extending in the longitudinal direction and having a plurality of openings 65 formed at predetermined intervals in the longitudinal direction (the penetrating direction of the paper surface of FIG. 9); and a third vertical portion 66 extending therefrom. A lower end portion of the first vertical portion 61 is folded outward to form a folded piece 67 . The upper end of the third vertical portion 66 is bent inward to form a bent piece 68, which prevents the ventilation member 70 inserted from the end of the eaves member 60 from coming off upward.

The ventilation member 70 is formed in a rod shape having a polygonal shape with a trapezoidal cross section in the width direction (horizontal direction in FIG. 9) and extending in the longitudinal direction. and the inner surface of the third vertical portion 66 and its lower surface abuts the inner surface of the second horizontal portion 64 of the eave member 60 . The ventilation member 70 is made of a plurality of laminated synthetic resin sheets each having an uneven cross-sectional shape, which are connected to each other by heat sealing and integrated. A large number of vent holes 75 are formed to penetrate through. As a result, the ventilation member 70 enables ventilation through the ventilation holes 75, and exhibits ventilation performance and waterproof performance to prevent rainwater, insects, etc. from entering through the ventilation holes 75. - 特許庁

Next, referring to FIG. 10, the eaves ventilation structure 90 includes a plurality of furring strips 81 attached to the outer surface of the gable wall base material 80 at predetermined intervals in the longitudinal direction (the penetrating direction of the paper surface of FIG. 10). It is fixed by screwing through the first vertical portion 61 which abuts on the upper end portion. The eaves ventilation structure 90 fixed to the furring strip 81 has a space formed by the first vertical portion 61, the first horizontal portion 62 and the second vertical portion 63, and the end wall material 82 is inserted to form the eaves ventilation structure. The installation state of the body 90 is stable.

With the gable wall material 82 attached to the eaves ventilation structure 90 in this way, the gable base material 84 is installed on the outer side of the rafters 83 and the gable 85 is attached.

By doing so, the eaves portion, which is the space between the upper end of the gable wall material 82 and the lower end of the gable 85, is completely closed by the eaves ventilation structure 90.例文帳に追加As described above, the ventilation member 70 of the eaves ventilation structure 90 is difficult for water to pass through and has high air permeability. The air in the building such as the attic space 86 moves outward through each of the ventilation holes 75 of the ventilation member 70 and the openings 65 of the eaves member 60 . In the case of a situation in which outside air enters the building, the flow is opposite to the arrows in the figure. Also, since the ventilation member 70 is incorporated, it is possible to reliably prevent rainwater from entering.

JP 2014-031640 A

In the above conventional eaves ventilation structure 90 shown in Patent Document 1, the eaves ventilation structure 90 is deformed by heat in the event of a fire in the vicinity, and a gap is formed between the gable 85 and the eaves ventilation structure 90. There is a possibility that the heated outside air or flame may enter the attic space 86 or the like through the gap. In other words, it did not even have fireproof performance such as preventing the spread of fire.

SUMMARY OF THE INVENTION The present invention has been made to solve the problems described above, and an object of the present invention is to provide an eaves ventilation structure and an eaves ventilation member with improved fireproof performance.

In order to achieve the above object, the invention according to claim 1 is an eaves ventilation structure installed in a portion between an exterior wall material and a gable base material, wherein the eave ventilation structure is perpendicular to the inner side of the exterior wall material. a first vertical portion extending in a direction, a first horizontal portion connected to the upper end side of the first vertical portion and horizontally extending outward, and a first horizontal portion connected to the outer side of the first horizontal portion, a second vertical portion extending vertically downward with respect to the outer side of the upper end; and a plurality of openings connected to the lower end of the second vertical portion and extending outward in the horizontal direction at predetermined intervals in the longitudinal direction. a formed second horizontal portion; a third vertical portion connected to the outer side of the second horizontal portion and extending vertically upward with respect to the inner side of the gable base material; and an eaves member consisting of an outer piece that extends vertically and covers the lower surface of the gable base material; and a ventilation member having a ventilation function.

By doing so, it becomes difficult to form a gap between the eaves member and the gable base member.

According to the invention of claim 2, in the structure of the invention of claim 1, the eaves member is formed by bending a metal plate, and the outer piece is a horizontal part continuously extending from the outer end of the second horizontal part. It extends in the direction and folds back to continue to the lower end of the third vertical portion.

With this configuration, the outer piece is formed as an extension of the second horizontal portion.

The invention according to claim 3 is the structure of the invention according to claim 1 or claim 2, wherein the ventilation member is mounted between the inner surface of the second vertical portion and the inner surface of the third vertical portion, At least one ventilation component having a ventilation hole formed at a position spaced upwardly from the second horizontal portion is provided.

With this configuration, the waterproof performance of the eaves ventilation structure can be adjusted.

According to a fourth aspect of the invention, in the configuration of the third aspect of the invention, the thermal expansion material is arranged inside the ventilation component and between the opening and the ventilation hole.

With this configuration, the thermal expansion material expands in the space between the opening and the ventilation hole.

The invention according to claim 5 is the structure of the invention according to claim 1 or claim 2, wherein the ventilation member is mounted between the inner surface of the second vertical portion and the inner surface of the third vertical portion, It comprises at least one ventilation component having a cross section in the transverse direction of a polygonal shape and having a plurality of ventilation passages penetrating from the lower surface to the upper surface.

With this configuration, the waterproof performance of the eaves ventilation structure can be adjusted.

According to the sixth aspect of the invention, in the structure of the fifth aspect, the thermal expansion material is arranged on the upper surface of the first horizontal portion.

With this configuration, the thermal expansion material expands on the upper end side of the air passage.

The invention according to claim 7 is an eaves ventilation member used for natural ventilation of a house, comprising: a first vertical portion extending in a vertical direction; a second vertical portion having its upper end connected to the other end of the first horizontal portion and extending vertically downward; and a first horizontal portion having its one end connected to the lower end of the second vertical portion A second horizontal portion extending horizontally away from the vertical portion and having a plurality of openings formed at predetermined intervals in the longitudinal direction; and a third vertical portion connected to the other end of the second horizontal portion and extending vertically upward. and an outer piece extending from the third vertical portion in the same direction as the extending direction of the second horizontal portion; , and a ventilation member having a rod shape extending in the longitudinal direction and having a ventilation function.

With this configuration, the outer piece increases the area covered by the eaves member.

As described above, according to the first aspect of the present invention, the gap between the eaves member and the gable base material is less likely to form, thereby improving the fireproof performance.

According to the invention of claim 2, in addition to the effect of the invention of claim 1, since the outer piece is formed on the extension of the second horizontal portion, the formation of the outer piece is facilitated.

According to the third aspect of the invention, in addition to the effect of the first or second aspect of the invention, the waterproof performance of the eaves ventilation structure can be adjusted, thereby improving the reliability.

According to the invention of claim 4, in addition to the effect of the invention of claim 3, the thermal expansion material expands in the space between the opening and the ventilation hole, so that the fire prevention performance is further improved.

According to the fifth aspect of the invention, in addition to the effect of the first or second aspect of the invention, the waterproof performance of the eaves ventilation structure can be adjusted, thereby improving the reliability.

According to the sixth aspect of the invention, in addition to the effect of the fifth aspect of the invention, the thermal expansion material expands on the upper end side of the ventilation path, so that the fire prevention performance is further improved.

According to the seventh aspect of the invention, the outer piece increases the area covered by the eaves member, so that gaps are less likely to occur.

1 is a perspective view of an eave ventilation member according to a first embodiment of the present invention; FIG. 2 is an enlarged cross-sectional view taken along line II-II shown in FIG. 1; FIG. 3 is an enlarged perspective view schematically showing external shapes of a first ventilation component, a second ventilation component, and a third ventilation component that constitute the ventilation member shown in FIG. 2; FIG. 1. It is an installation drawing which shows the attachment process which attaches the eaves ventilation member shown in FIG. 1 to the eaves part of the gable side, and construct|assembles an eaves ventilation structure. FIG. 5 is a schematic side view showing the state of the eaves ventilation structure shown in FIG. 4 at the time of fire; 1 is attached to the eaves or to the eaves part on the side of the one-sided building to construct the eaves ventilation structure, and corresponds to (2) in FIG. 4. It is a diagram. FIG. 2 is an enlarged cross-sectional view of an eaves ventilation member according to a second embodiment of the present invention, corresponding to FIG. 2 according to the first embodiment, and a perspective view showing the external shape of the ventilation member; . FIG. 8 is a schematic side view showing the state of the eaves ventilation structure including the eaves ventilation member shown in FIG. 7 at the time of fire, and is a view corresponding to FIG. 5 according to the first embodiment; It is a cross-sectional schematic diagram of the conventional eaves ventilation structure shown in patent document 1. FIG. FIG. 10 is a schematic end view showing the attachment state of the eaves ventilation structure shown in FIG. 9 to the eaves portion;

1 is a perspective view of an eaves ventilation member according to a first embodiment of the present invention, FIG. 2 is an enlarged cross-sectional view taken along line II-II shown in FIG. 1, and FIG. 2 is an enlarged perspective view schematically showing external shapes of a first ventilation component, a second ventilation component, and a third ventilation component constituting the ventilation member shown in FIG.

First, referring to FIGS. 1 and 2, the eaves ventilation member 1 is formed by bending a steel plate having a thickness of 0.35 mm and forming an eaves member 10 formed by bending a steel plate having a thickness of 0.35 mm. and a ventilation member 20 .

The eaves member 10 is formed in an elongated shape with a length of 1820 mm, and includes a first vertical portion 11 extending in the vertical direction and a first vertical portion 11 extending in the horizontal direction with one end connected to the upper end side of the first vertical portion 11 . a horizontal portion 12; a second vertical portion 13 having an upper end connected to the other end of the first horizontal portion 12 and extending vertically downward; a second horizontal portion 14 extending horizontally away from the vertical portion 11 and having a plurality of openings 15 formed at predetermined intervals in the longitudinal direction; It consists of an outer piece 17 that extends and folds back to extend in the same direction as the extension direction of the second horizontal portion 14, and a third vertical portion 16 that is continuous with the outer piece 17 at its lower end and extends vertically upward. The third vertical portion 16 is connected to the other end side of the second horizontal portion 14 via an outer piece 17 . Further, the upper end portion of the third vertical portion 16 is bent inward to further form a bent piece 18, which exerts an effect of preventing the ventilation member 20 from coming off upward.

With this configuration, the outer piece 17 is formed on the extension of the second horizontal portion 14, so the formation of the outer piece 17 is facilitated in terms of sheet metal processing.

The ventilation member 20 has a bar shape extending in the longitudinal direction with a length substantially equal to the length of the eaves member 10, and an adhesive or adhesive is applied between the inner surface of the second vertical portion 13 and the inner surface of the third vertical portion 16. It is mounted in a fixed state using double-sided tape or the like, and has a ventilation function.

The effects of this configuration will be described later.

Next, referring also to FIG. 3 , the ventilation member 20 includes a first ventilation component 21 , a second ventilation component 22 and a third ventilation component 23 .

The first ventilation part 21 extends in the longitudinal direction with substantially the same length as the eaves member 10, and has a bar shape that can be freely inserted between the inner surface of the second vertical part 13 and the inner surface of the third vertical part 16. , and has a substantially inverted U-shaped cross section in the lateral direction, and includes a pair of side wall portions 24 a and 24 b and an upper surface portion 25 . A plurality of ventilation holes 26 formed by cutting and raising the first ventilation component 21 inwardly (downwardly) are formed in the upper surface portion 25 at predetermined intervals in the longitudinal direction. A strip-shaped thermal expansion member 27 is attached to the inner surface of the side wall portion 24b on one side.

The basic shape of the second ventilation component 22 is similar to that of the first ventilation component 21 . That is, the second ventilation part 22 extends in the longitudinal direction by substantially the same length as the eaves member 10 and is freely insertable between the inner surface of the second vertical part 13 and the inner surface of the third vertical part 16. It is formed in a bar shape, and has a substantially inverted U-shaped cross section in the lateral direction, and includes a pair of side wall portions 28a and 28b and an upper surface portion 29. The upper surface portion 29 is provided with an inner side ( A plurality of ventilation holes 30 are formed at predetermined intervals in the longitudinal direction.

The third ventilation part 23 extends in the longitudinal direction with substantially the same length as the eaves member 10 and has a bar shape that can be freely inserted between the inner surface of the second vertical part 13 and the inner surface of the third vertical part 16. has a substantially inverted J-shaped transverse cross section, and includes a first side wall portion 31 on one side, a second side wall portion 32 on the other side, and an upper surface portion 33. The upper surface portion 33 A plurality of ventilation holes 34 formed by cutting and raising the third ventilation component 23 inwardly (downwardly) are formed at predetermined intervals in the longitudinal direction. The height of the second side wall portion 32 is substantially the same as the sum of the heights of the side wall portion 24 a on one side, the side wall portion 28 a on one side, and the first side wall portion 31 .

When attaching to the eaves member 10, the first ventilation component 21 is placed at the bottom, the second ventilation component 22 is attached to the upper surface portion 25 of the first ventilation component 21, and the second side wall portion 32 is attached to the upper surface portion 25 of the first ventilation component 21. The third ventilation member 23 is superimposed on the upper surface 29 of the second ventilation member 22 so as to cover the outer surfaces of the side wall portion 24b and the side wall portion 28b, thereby forming the ventilation member 20. and the inner surface of the third vertical portion 16 , and the ventilation member 20 is fixed with the first ventilation component 21 placed on the inner surface of the second horizontal portion 14 .

Then, since the ventilation holes 26 of the first ventilation component 21 are formed in the upper surface portion 25, the ventilation member 20 has the first ventilation member 20 formed with the ventilation holes 26 at a position spaced upward from the second horizontal portion 14. A ventilation component 21 is provided. With this configuration, it is possible to adjust the waterproof performance of the below-described eaves ventilation structure, thereby improving the reliability. Incidentally, since the vent hole 30 of the second vent component 22 and the vent hole 34 of the third vent component 23 are also formed at positions separated from the second horizontal portion 14, the second vent component 22 and the 3 ventilation component 23 also has the same effects as the first ventilation component 21 . By cooperating with each other, the ventilation member 20 exhibits ventilation performance and waterproof performance.

Further, the thermal expansion material 27 attached to the inner surface of the side wall portion 24b is arranged inside the first ventilation component 21 and between the opening 15 and the ventilation hole 26. As shown in FIG. With this configuration, the thermal expansion material 27 expands in the space between the opening 15 and the ventilation hole 26, so the fire prevention performance is further improved.

FIG. 4 is an assembly diagram showing a mounting process for constructing an eaves ventilation structure by mounting the eaves ventilation member shown in FIG.

First, referring to FIG. 4(1), in the eaves part on the gable side, the outer wall base material 50 and the outer surface of the outer wall base material 50 are attached at predetermined intervals in the longitudinal direction (direction penetrating through FIG. 4) on the outer surface of the outer wall base material 50. A plurality of furring strips 51, a rafter 53 arranged above an attic space 56, and a roof base material 57 and a roof material 58 attached on the rafter 53 are installed.

In this state, first, the eaves ventilation member 1 is arranged so that the first vertical portion 11 of the eaves ventilation member 1 abuts on the outer side of the upper end portion of the furring strip 51, and the eaves ventilation member 1 is placed. It is fixed to the furring strip 51 by screwing along the slope of the roof material 58. - 特許庁

Next, the outer wall material 52 is inserted into the space formed by the first vertical portion 11, the first horizontal portion 12 and the second vertical portion 13 of the eaves ventilation member 1 fixed to the furring strip 51, and The roof ventilation member 1 is moved from below to above. In this manner, the exterior wall material 52 is sandwiched between the first vertical portion 11 and the second vertical portion 13 of the eaves ventilation member 1, and the installed state of the eaves ventilation member 1 is stabilized.

Next, referring to FIG. 4 ( 2 ), a gable base material 54 made of wood is installed between the upper surface of the outer piece 17 of the eaves ventilation member 1 and the lower surface of the roof base material 57 . At this time, the outer surface of the gable base material 54 is adjusted to be flush with the outer end of the outer piece 17 . For example, if the thickness of the gable base material 54 exceeds the width of the outer piece 17 , the gable base material 54 is partially cut to match the width of the outer piece 17 , and the thickness of the gable base material 54 exceeds the width of the outer piece 17 . If it is less than the width, the outer surface of the gable base material is aligned with the outer edge of the outer piece 17, or another base material is added to add thickness to the gable base material 54. Adjust the installation position. With this configuration, the gable base material 54 can be easily adjusted, and construction can be facilitated.

After the gable base material 54 is adjusted, screws are driven from the lower surface of the outer piece 17 toward the gable base material 54 to fix the gable base material 54 and the outer piece 17 with screws. By doing so, the entire lower surface of the gable base material 54 is covered with the outer piece 17 . The effects of this configuration will be described later.

Finally, using nails or the like, a gable 55 made of a metal-based or ceramic-based refractory material is placed so that the lower end is positioned below the lower surface of the gable base material 54 . to complete the installation process of the eaves ventilation member 1, and air travels between the outside of the eaves part and the attic space 56 as shown by the arrows in the figure via the opening 15 and the ventilation member 20. An eaves ventilation structure 2 having a ventilation path 38 that enables By arranging the gables 55 in this way, the gables 55 function as drainers below the opening 15, so rainwater is less likely to enter the inside of the eaves ventilation member 1. - 特許庁

The eaves ventilation structure 2 installed in the portion between the outer wall material 52 and the gable base material 54 includes a first vertical portion 11 extending vertically with respect to the inner side of the outer wall material 52 and a first A first horizontal portion 12 connected to the upper end side of the vertical portion 11 and extending horizontally outward, and a A second vertical portion 13 extending vertically downward, a second vertical portion 13 connected to the lower end side of the second vertical portion 13, extending horizontally outward, and having a plurality of openings 15 formed at predetermined intervals in the longitudinal direction. 2 horizontal portions 14, a third vertical portion 16 connected to the outer side of the second horizontal portion 14 and extending vertically upward with respect to the inner side of the gable base material 54, and the outer end of the second horizontal portion 14 The outer piece extends horizontally continuously from the part and folds back, continues to the lower end of the third vertical part 16, extends outward from the third vertical part 16, and covers the lower surface of the gable base material 54. 17, and an eaves member 10 detachably mounted between the inner surface of the second vertical portion 13 and the inner surface of the third vertical portion 16, having a bar shape extending in the longitudinal direction, and having a ventilation function. A member 20 is provided.

With this configuration, it becomes difficult to form a gap between the eaves member 10 and the gable base material 54, so that the fireproof performance of the eaves ventilation member 1 and the eaves ventilation structure 2 is improved. In addition, since the outer piece 17 increases the area covered by the eaves member 10, gaps are less likely to form, and the fireproof performance of the eaves ventilation member 1 and the eaves ventilation structure 2 is improved. A more specific description of this fireproof performance is as follows.

FIG. 5 is a schematic side view showing the state of the eaves ventilation structure shown in FIG. 4 at the time of fire.

Referring to the figure, the eaves member 10 of the eaves ventilation member 1 is covered with the gable base material 54, and the lower surface of the gable base material 54 is covered with the outer piece 17, and the gap between the eaves member 10 and the gable base material 54 is covered. Even if a fire breaks out near the eaves ventilation structure 2, the gable base material 54, which is made of wood and is flammable, is fixed to the outer piece 17 (eaves member 10). hard to be exposed. Further, even if the eaves member 10 is deformed by heat, the fixed state of the eaves member 10 and the gable base material 54 via the outer piece 17 is maintained. Therefore, gaps are less likely to occur between the eaves member 10 and the gable base material 54, and as indicated by the arrows on the left side of the figure, high-temperature outside air and flames are less likely to enter the room through the gaps. Therefore, the fireproof performance of the eaves ventilation member 1 and the eaves ventilation structure 2 is improved.

Further, when the ambient temperature of the eaves ventilation structure 2 reaches a predetermined temperature, the thermal expansion material 27 foams inside the first ventilation component 21 and expands so as to fill the space between the opening 15 and the ventilation hole 26. do. That is, the ventilation path 38 is blocked by the thermal expansion material 27, and the outside air is blocked outside the eaves ventilation member 1 as indicated by the arrow on the right side of the figure, so the eaves ventilation member 1 and the eaves ventilation structure The fireproof performance of the body 2 is further improved.

FIG. 6 is a fitting diagram showing a state in which an eaves ventilation structure is constructed by attaching the eaves ventilation member shown in FIG. ).

First, referring to FIG. 6 (1), the eaves ventilation structure 3 is composed of the eaves ventilation member 1 attached to the eaves portion of the eaves. Further, referring to FIG. 6(2), the eaves ventilation structure 4 is composed of the eaves ventilation member 1 attached to the eaves portion on the side of the single-flow ridge. Since other components are the same as those of the eaves ventilation structure 2, the description here will not be repeated.

With this configuration, the outer piece 17 makes it difficult for a gap to form between the eaves member 10 and the gable base material 54, so that the fireproof performance of the eaves ventilation structure 3 and the eaves ventilation structure 4 is improved.

FIG. 7 is an enlarged cross-sectional view of an eaves ventilation member according to a second embodiment of the present invention, showing a view corresponding to FIG. 2 according to the first embodiment and an external shape of the ventilation member. It is a perspective view.

First, referring to (1) of FIG. 7, the eaves ventilation member 6 replaces the ventilation member 20 in the eaves ventilation member 1 according to the first embodiment with a ventilation member 40, and the position of the thermal expansion member is modified from Other components are the same as those of the eaves ventilation member 1 according to the first embodiment, so the description here will not be repeated.

The ventilation member 40 is inserted between the inner surface of the second vertical portion 13 and the inner surface of the third vertical portion 16, and is attached in a fixed state using an adhesive, double-sided tape, or the like, and has a trapezoidal transverse cross section. A ventilation part 41 is provided which has a shape and is formed in a bar shape extending in the longitudinal direction with a length substantially equal to the length of the eaves member 10 . With this configuration, it is possible to adjust the waterproof performance of the below-described eaves ventilation structure, thereby improving the reliability.

Next, also referring to FIG. 7(2), the ventilation part 41 is formed by laminating a plurality of synthetic resin sheets each having an uneven cross-sectional shape and connecting them to each other by heat sealing to integrate them. It has a plurality of air passages 45 penetrating from one side surface (lower surface 43) to the other side surface (upper surface 44).

In addition, the lower surface 43 of the ventilation member 40 is in contact with the inner surface of the second horizontal portion 14 . Also, the thermal expansion material 47 is arranged on the upper surface of the first horizontal portion 12 .

The effects of this configuration will be described later.

8 is a schematic side view showing the state of the eaves ventilation structure provided with the eaves ventilation member shown in FIG. 7 at the time of fire, and is a view corresponding to FIG. 5 according to the first embodiment.

Referring to the figure, the eaves ventilation structure 7 is formed by replacing the eaves ventilation member 1 in the eaves ventilation structure 2 according to the first embodiment with an eaves ventilation member 6 . Other components are the same as those of the eaves ventilation structure 2 according to the first embodiment, so the description here will not be repeated.

When the installation process of the eaves ventilation member 6 is completed and a fire breaks out in the vicinity of the eaves ventilation structure 7 provided with the ventilation path 48 via the opening 15 and the ventilation member 40, as indicated by the arrow on the left side of the figure In addition, high-temperature outside air and flames are unlikely to enter the room through the gap between the eaves member 10 and the gable base material 54, so the fireproof performance of the eaves ventilation member 6 and the eaves ventilation structure 7 is improved. .

Further, when the ambient temperature of the eaves ventilation structure 7 reaches a predetermined temperature, the thermal expansion material 47 foams and expands on the upper end side of the ventilation path 45 . The upper surface 44 of the ventilation member 40 is covered with the thermal expansion material 47 to block the upper end of the ventilation path 45 . That is, the ventilation path 48 is blocked by the thermal expansion material 47, and as indicated by the arrow on the right side of the figure, outside air is blocked before reaching the attic space 56, so the eaves ventilation member 6 and the eaves ventilation structure The fireproof performance of the body 7 is further improved.

In each of the above-described embodiments, the outer piece extends horizontally continuously from the outer end of the second horizontal portion, folds back, and continues to the lower end of the third vertical portion. It may extend from any portion of the third vertical portion as long as it extends in the extending direction of the second horizontal portion from the third vertical portion. With this configuration, a gap is less likely to form between the eaves member and the gable base material, thereby improving the fireproof performance.

Further, in each of the embodiments described above, the outer piece is formed by folding it back, but it may be formed in the shape of a single flat plate, or may be formed in another shape.

Furthermore, in each of the above embodiments, the outer piece covers the entire lower surface of the gable base material, but it may cover a part of the lower surface of the gable base material.

Furthermore, in the first embodiment described above, the ventilation member was provided with three ventilation parts, but it is attached between the inner surface of the second vertical section and the inner surface of the third vertical section, and the second horizontal It is sufficient that at least one ventilation part having a ventilation hole formed at a position spaced upward from the part is provided.

Furthermore, in the above-described first embodiment, the ventilation member is formed by stacking three ventilation parts, but it may be formed by stacking two or four or more ventilation parts.

Furthermore, in the above-described first embodiment, each of the ventilation parts is formed in a specific shape, but may be formed in another shape.

Furthermore, in the above-described first embodiment, the thermal expansion material is attached to the side wall on one side and arranged inside the first ventilation component, but it may be attached to the side wall on the other side, It may be located between the opening and the vent, such as within the second vent component or the third vent component. Also, it may be arranged so as to close the ventilation hole of the third ventilation component from above, for example, so as to block the ventilation path.

Furthermore, in the above-described first embodiment, each of the ventilation holes is formed by cutting and bending, but they may be formed in other shapes such as a simple oblong hole.

Furthermore, in the above-described second embodiment, the ventilation member is provided with one ventilation component having a cross section in the transverse direction of a polygonal shape and having a plurality of ventilation paths penetrating from the lower surface to the upper surface. However, a plurality of similar ventilation parts may be provided.

Furthermore, in the above-described second embodiment, the ventilation component is formed in a specific shape, but it may be formed in another polygonal shape in cross section in the transverse direction.

Furthermore, in the above-described second embodiment, the thermal expansion material is arranged on the upper surface of the first horizontal portion. A space may be provided between them, and they may be arranged within the space.

Furthermore, in each of the above-described embodiments, the ventilation component is inserted between the inner surface of the second vertical portion and the inner surface of the third vertical portion, and fixed with an adhesive or the like. It may be attached by other methods as long as it is attached between the inner surface of the second vertical portion and the inner surface of the third vertical portion, and may be detachable.

Furthermore, in each of the embodiments described above, the bent piece is further formed at the upper end of the third vertical portion, but it may be omitted.

Furthermore, in the above-described second embodiment, the eaves ventilation member is attached and the eaves ventilation structure is constructed at the eaves part on the gable side. It can be done in parts.

Furthermore, in each of the above embodiments, the eaves member is formed by bending a steel plate, but it may be formed by bending another metal plate, or may be formed of another material.

Furthermore, in the above-described first embodiment, the plate thickness of the eaves member and ventilation member was set to 0.35 mm, but other thicknesses may be used.

Furthermore, in each of the above-described embodiments, each of the eaves member and the ventilation member is formed of predetermined dimensions and of predetermined materials, but may be formed of other dimensions and materials.

Furthermore, in each of the above embodiments, the outer piece covers the lower surface of the gable base material and is fixed to the gable base material. good too. Even with this construction, a gap is less likely to form between the eaves member and the gable, and the gable base material made of wood is less likely to be exposed, thereby improving the fireproof performance of the eaves ventilation member and the eaves ventilation structure.

1 Eaves ventilation member 2 Eaves ventilation structure 3 Eaves ventilation structure 4 Eaves ventilation structure 6 Eaves ventilation member 7 Eaves ventilation structure 10 Eaves member 11 First vertical Parts 12 First horizontal part 13 Second vertical part 14 Second horizontal part 15 Opening 16 Third vertical part 17 Outer piece 20 Ventilation member 21 First ventilation component 22 Second ventilation Components 23 Third ventilation component 26 Ventilation hole 27 Thermal expansion material 30 Ventilation hole 34 Ventilation hole 40 Ventilation member 41 Ventilation component 43 Lower surface 44 Upper surface 45 Ventilation path 47 Thermal expansion material 52: Outer wall material 54: Gable base material In each figure, the same reference numerals indicate the same or corresponding parts.

Claims (7)

An eaves ventilation structure installed in a portion between an exterior wall material and a gable base material,
a first vertical portion extending vertically with respect to the inner side of the outer wall material; a first horizontal portion connected to the upper end side of the first vertical portion and extending horizontally outward; a second vertical portion connected to the outer side of the horizontal portion and extending vertically downward with respect to the outer side of the upper end portion of the exterior wall material; a second horizontal portion extending in the horizontal direction and having a plurality of openings formed at predetermined intervals in the longitudinal direction; connected to the outer side of the second horizontal portion and vertically upward with respect to the inner side of the gable base material; an eaves member comprising a third vertical portion extending outward and an outer piece extending outward from the third vertical portion and covering the lower surface of the gable base material;
An soffit ventilation structure, comprising: a ventilation member having a rod shape extending in the longitudinal direction and having a ventilation function, which is attached between the inner surface of the second vertical portion and the inner surface of the third vertical portion. The eaves member is formed by bending a metal plate, and the outer piece extends horizontally continuously from the outer end of the second horizontal portion and folds back to reach the lower end of the third vertical portion. 2. The soffit ventilation structure of claim 1, wherein the soffit ventilation structure is continuous. The ventilation member includes at least one ventilation part mounted between the inner surface of the second vertical portion and the inner surface of the third vertical portion and having a ventilation hole formed at a position spaced upward from the second horizontal portion. 3. An eaves ventilation structure according to claim 1 or claim 2, comprising: 4. The eaves ventilation structure of claim 3, wherein the thermal expansion material is positioned within the vent component and between the opening and the vent. The ventilation member is mounted between the inner surface of the second vertical portion and the inner surface of the third vertical portion, and has a cross section in the transverse direction of a polygonal shape, and a plurality of ventilation passages penetrating from the lower surface to the upper surface. 3. An eaves ventilation structure according to either claim 1 or claim 2, comprising at least one ventilation component having a . 6. The eaves ventilation structure of claim 5, wherein the thermal expansion material is disposed on the upper surface of the first horizontal portion. An eaves ventilation member used for natural ventilation of a house,
a first vertical portion extending in the vertical direction, a first horizontal portion having one end connected to the upper end of the first vertical portion and extending in the horizontal direction, and an upper end connected to the other end of the first horizontal portion A second vertical portion extending vertically downward, one end side of which is connected to the lower end side of the second vertical portion, extends horizontally away from the first vertical portion, and a plurality of openings are formed at predetermined intervals in the longitudinal direction. a third vertical portion connected to the other end side of the second horizontal portion and extending vertically upward; and a direction in which the second horizontal portion extends from the third vertical portion. an eaves member comprising an extending outer piece;
an eaves ventilation member having a rod shape extending in the longitudinal direction and having a ventilation function attached between the inner surface of the second vertical portion and the inner surface of the third vertical portion.

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