JP2010150879A - Decorative fascia board - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To surely prevent rainwater entering into a ventilation chamber from a vent hole in a decorative fascia board having the vent hole when rainwater coming in from an edge of eaves adheres to and flows along the front of the decorative fascia board. <P>SOLUTION: In the decorative fascia board A comprising a front cover 1 for covering the front surface 41 of a fascia board 4, and a bottom cover 2 for covering the bottom surface 42 of the fascia board 4 and forming a hollow ventilation chamber 20 under the bottom surface 42, a plurality of vent holes 21a are provided on the front wall 21 of the ventilation chamber 20, a drain piece 13 suspended from a front surface cover 1 is provided in front of the vent holes 21a, and a shielding plate 3 is protruded in the ventilation chamber 20 to partition the ventilation chamber 20 into front and rear spaces. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a nose cover decorative board provided with a ventilation hole for ventilating an attic space.

In order to prevent the flow of outside air to the attic from being blocked by the nose cover attached to the edge of the rafters protruding over the eaves, the front and bottom surfaces of the nose cover are integrally covered with a decorative plate, A structure of an eaves is known in which a ventilation chamber is formed on the side, outside air flows into the attic from a vent formed in the bottom wall of the ventilation chamber, and ventilation of the attic space can be performed (for example, Patent Document 1). reference).
However, with this structure, although the nasal cover is covered with a decorative board, when the eaves are looked up from below, the vents formed in the bottom wall of the ventilation chamber are conspicuous, and the appearance of the eaves looks worse. there were.

Then, a nose cover decorative board in which a vent hole is formed in the rear wall located on the building side of the ventilation chamber has been proposed so that the vent hole is not visible when looking up at the eaves edge (see, for example, Patent Document 2). .
However, with this nose cover panel, the vents are formed facing the outer wall of the building, so if the wind and rain are strong, rainwater blown up along the outer wall of the building will travel along the lower surface of the eaves ceiling from the vent hole. There was a risk of rainwater getting into the attic easily entering the ventilation room.

JP 7-259282 A JP-A-10-96314

In order to solve the above-mentioned conventional problems, the applicant of the present invention integrally covers the front and bottom surfaces of the nose cover 96 as shown in FIG. There has been proposed a nose masking decorative plate 91 in which a plurality of ventilation holes 93a are formed in the front wall 93 of the ventilation chamber 92. According to the nose cover decorative plate 91, the vent hole 93a is provided in the front wall 93 of the ventilating chamber 92. Therefore, the vent hole 93a is not noticeable when looking up at the eaves edge, and is also formed on the outer wall of the building. Rain water blown up along the lower surface of the eaves ceiling does not enter the vent hole 93a.
However, if a vent hole 93a is provided in the front wall 93 of the ventilation chamber 92 facing the eaves side, rainwater blown from the eaves attaches to the front surface 95 of the nose cover decorative plate 91 and flows down the front surface 95. When the underwater overhanging portion 94 passes below the front wall 93 of the ventilation chamber 92 and enters the ventilation chamber 92 through the vent hole 93a, or when rainwater falls from the tip of the overhanging portion 94. A new problem has arisen in that it is drawn into the air flowing into the ventilation chamber 92 from the vent hole 93a, enters the ventilation chamber 92, and blows into the attic as it is.

  In view of such a problem, the present invention provides a nose cover decorative board having a vent hole for ventilating an attic space. It is an object of the present invention to make it possible to reliably prevent rainwater from entering the roof and to prevent a flame or hot air from entering the attic during a fire.

  In order to solve the above-mentioned problems, a nose cover decorative plate according to the present invention includes a front cover portion covering the front surface of the nose cover and a bottom cover portion covering the bottom surface of the nose cover and forming a hollow ventilation chamber below the front cover portion. A hidden decorative board, comprising a plurality of vent holes provided in a front wall of the ventilation chamber, and a draining piece hanging from the front covering portion provided in front of the vent hole. And

According to this, the rainwater blown into the eaves tip adheres to the front cover part of the nose cover decorative plate, flows down along the surface, and falls from the drain piece formed by hanging down from the front cover part to the eaves. Since a drain piece protrudes in front of the ventilation chamber, rainwater that flows down along the surface of the front cover is surely drained by the drain piece and flows around the front wall of the ventilation chamber or flows into the ventilation chamber from the vent hole. Therefore, it is possible to prevent rainwater from entering the ventilation chamber from the vent hole without being pulled into the ventilation chamber.
In addition, because the ventilation holes are provided on the front wall of the ventilation chamber, the ventilation holes do not become visible when the eaves are looked up from below, and the front and bottom surfaces of the nose cover are integrally covered with the nose cover. Combined with the appearance, the appearance under the eaves is treated neatly in a clean state.

  In the nasal cover with the above structure, a shielding plate is suspended from the front covering portion into the ventilation chamber, the ventilation chamber is partitioned into front and rear spaces by the shielding plate, and a ventilation path is formed below the shielding plate. It is preferable that a heating foam material is installed on the back side of the shielding plate facing the ventilation path.

  According to this, the ventilation chamber is partitioned into front and rear spaces by the shielding plate, and the outside air that has entered the ventilation chamber through the vent hole collides with the shielding plate, and its momentum is temporarily reduced and secured below the shielding plate. It flows into the attic through the ventilated passage. Therefore, even if the wind and rain are strong and the outside air containing rainwater enters the ventilation chamber through the ventilation hole, the outside air that has flowed in does not hit the shielding plate once and does not like the roof. Moreover, since the heating foam material is installed in the back side of the shielding board, the rain water which entered the ventilation chamber from the vent hole does not wet the heating foam material. When a fire or hot air enters the ventilation chamber from the vent when a fire breaks out, the heated foam expands and completely blocks the ventilation path from the ventilation path below the shielding plate to the attic. Can be reliably prevented from entering the attic. In addition, although a heating foam material can be directly mounted | worn on the back surface of a shielding board, the same effect can be acquired even if it installs in the rear wall of the ventilation chamber of the position facing a shielding board.

  The nose cover decorative board of the present invention has a plurality of ventilation holes on the front wall of the ventilation chamber, and a draining piece hanging from the front covering part is provided in front of the ventilation hole. The rainwater flowing along the surface falls from the drainage piece to the bottom of the eaves, and the rainwater can be prevented from entering the ventilation chamber from the vent hole. In addition, the inside of the ventilation chamber is divided into the front and rear spaces by a shielding plate, a ventilation path is formed below the shielding plate, and a heating foam material is installed on the back side of the shielding plate. Since it expands and the ventilation path on the back side of the shielding plate is completely blocked, it is possible to prevent a flame or hot air from entering the attic through the ventilation chamber.

A preferred embodiment of the present invention will be described with reference to the drawings.
1 is a sectional view of a nasal concealment with a nasal concealing decorative plate according to an embodiment of the present invention attached, FIG. 2 is an enlarged perspective view showing a vent hole of the nasal concealing decorative plate of FIG. 1, and FIG. It is sectional drawing which shows the state which attached the nose cover decorative board to the nose cover, and comprised the eaves of the roof. In each figure, the code | symbol A has shown the nose cover decorative board and B has shown the heating foam material, respectively.

  The illustrated nose cover decorative plate A includes a front cover portion 1 that covers the front face 41 of the nose cover 4 and a bottom cover portion 2 that covers the bottom face 42 of the nose cover 4 and forms a hollow ventilation chamber 20 therebelow. And a shielding plate 3 suspended in the ventilation chamber 20. These members are, for example, coated steel sheets that have been subjected to a corrosion-resistant process such as covering the surface with a vinyl chloride resin, materials having corrosion resistance, or materials having fire resistance such as galvanized steel sheets. It is formed by bending a steel plate along the longitudinal direction with a bender.

  More specifically, the front surface covering portion 1 has a vertical plate 11 that covers the front surface 41 of the nasal cover 4, and a hook-shaped protrusion 12 that protrudes forward of the eaves is formed below the vertical plate 11. A draining piece 13 that is folded and drooped is integrally provided. The upper end of the vertical plate 11 is bent at a substantially right angle to the front of the eaves with respect to the vertical plate 11, and the end is bent obliquely downward, and the front end portion 14 is engaged with a folded portion 61 of the drainer 6 described later. It comes to match.

  The bottom surface covering portion 2 is bent to have a substantially U-shaped cross section, and a ventilation chamber 20 that is a hollow space is formed by the front wall 21, the bottom wall 22, and the rear wall 23. The rear wall 23 of the ventilation chamber 20 is formed with a step 231 that supports the end of the eaves ceiling 7 (see FIG. 3). The rear wall 23 is bent upward from the step 231, and the rear wall 23 is inclined rearward. A rear end support 24 that is bent upward is extended. Further, a connecting piece 25 that protrudes obliquely forward and downward is provided at the upper end of the front wall 21 of the ventilation chamber 20.

  In addition, the front wall 21 of the ventilation chamber 20 is provided with a plurality of vent holes 21a at predetermined intervals along the longitudinal direction thereof, that is, the eave (horizontal) direction attached to the nose cover 4. As shown in FIG. 2, each vent 21 a is formed by a punching process in which the upper and lower edges of the surface of the front wall 21 are coupled to the front wall 21, and the left and right edges are divided to sink into the ventilation chamber 3 side. A gap between both sides of the bent plate 211 and the surface of the front wall 21 is a vent hole 21a.

  The shielding plate 3 has a connecting piece 31 that is inclined obliquely forward and downward at its upper end, and the connecting piece 31 is interposed between the protruding portion 12 of the front surface covering portion 1 and the connecting piece 25 of the bottom surface covering portion 2 as will be described later. While being sandwiched and fixed, the shielding plate 3 hangs down from the back side of the front covering portion 1 into the ventilation chamber 20 and divides the inside of the ventilation chamber 20 into front and rear space portions, and secures a ventilation path below it. And it is provided so that the space in the ventilated chamber 20 divided into two may be communicated. The lower end of the shielding plate 3 is provided with a locking piece 32 bent in a key shape to the back side, and the heating foam B is supported and fixed to the locking piece 32.

The nose cover decorative plate A made of these members is configured such that the protruding portion 12 of the front surface covering portion 1 and the connecting piece 25 of the bottom surface covering portion 2 are overlapped with the connecting piece 31 of the shielding plate 3 interposed therebetween to overlap the overlapping portion. It is configured by using rivets, screws, or the like, or by fixing them together by welding.
As shown in FIG. 1, the nose cover decorative plate A is attached such that the front surface 41 is formed substantially along the vertical surface and the bottom surface 42 is inclined at substantially the same angle as the bottom surface 51 of the rafter 5. The vertical plate 11 of the front cover 1 is applied to the front surface 41 of the nose cover 4 with respect to the nose cover 4 that is formed so that the bottom surface 42 is located above the bottom surface 51 of the rafter 5. The portion 2 is disposed below the bottom surface 42 of the nose cover 4, and the rear end support portion 24 of the bottom surface covering portion 2 is joined to the bottom surface 51 of the rafter 5. A support fitting P such as a screw or a nail is driven into and fixed to the vertical plate 11 of the front surface covering portion 1 covering the front surface 41, and the rear end support portion 24 joined to the bottom surface 51 is also attached to the rear end support portion 24. By attaching and fixing the support fitting P, the attachment to the nose cover 4 is completed.

  Then, as shown in FIG. 3, the eaves hanger 8 is attached to the front surface covering portion 1 of the nose cover decorative plate A to support the eave surface 9, and the front end portion 14 of the front surface covering portion 1 is fixed to the field plate. The folded portion 61 of the drainer 6 to be engaged is engaged, the roofing material is attached to the upper surface of the field board by covering the roofing and waterproofing, and the end portion of the eaves ceiling 7 is attached to the step portion 231 of the bottom surface covering portion 2 And the eaves around the eaves is completed by attaching the eaves ceiling 7 to the eaves.

According to the nose cover decorative board A of the present invention, the ventilation chamber 20 of the bottom covering portion 2 communicates with the space of the attic, and outside air is taken in from the vent holes 21a formed in the front wall 21 of the ventilation chamber 20 to make the space of the attic. It can be well ventilated.
Since a draining piece 13 hanging from the front covering portion 1 is provided in front of the vent hole 21a, rainwater that adheres to the front covering portion 1 and flows along the surface falls from the draining piece 13 to the eaves, and the rainwater is vented. There is no risk of entering the ventilation chamber 20 from 21a. In the event of a fire, the heated foam material B expands its volume and blocks the ventilation path between the ventilation chamber 20 and the attic space, so that outside air does not flow into the attic space from the vent hole 21a. Flames and hot air do not enter the attic through the ventilation chamber 20, and it is possible to suppress the spread of fire.

In addition, the shape of the illustrated nose cover decorative board A is an example, and can be formed into an appropriate shape according to the configuration or shape of the eaves of the house.
Further, instead of supporting and fixing the heating foam material B to the locking piece 32 of the shielding plate 3, the heating foam material B may be supported and fixed on the rear wall 23 side facing the shielding plate 3 in the ventilation chamber 20. Good. As the heating foam B, graphite-based thermal expansion material (manufactured by Intsumex), butyl-based and epoxy-based thermal expansion material are suitable, but in addition to this, volume expansion occurs when receiving a flame or hot air during a fire. Any material can be used as long as it has a function of blocking the ventilation path on the back side of the shielding plate 3.

It is sectional drawing of a nose cover of the state which attached the nose cover decorative board of one Embodiment of this invention. It is an expansion perspective view which shows the vent hole of the nose cover decorative board of FIG. It is sectional drawing which shows the state which attached the nose cover decorative board of FIG. 1 to the nose cover, and comprised the eaves of the roof. It is sectional drawing of the eaves edge of the roof which attached the conventional nose cover decorative board.

Explanation of symbols

A Nose cover plate, B Heating foam material, 1 Front cover, 11 Vertical plate, 12 Projection, 13 Drip piece, 14 Tip, 2 Bottom cover, 20 Ventilation chamber, 21 Front wall, 22 Bottom wall, 23 Rear wall, 24 Rear end support part, 25 connecting piece, 3 shielding plate, 31 connecting piece, 32 locking piece, 4 nose cover, 41 front face, 42 bottom face, 5 rafters, 51 bottom face, 6 drainer, 61 folding part, 7 Eaves ceiling, 8 eaves hanger, 9 eaves

Claims (2)

  A front covering portion (1) covering the front surface (41) of the nasal concealment (4) and a bottom covering portion covering the bottom surface (42) of the nasal concealment (4) and forming a hollow ventilation chamber (20) below the front covering portion (1). (2) A nose cover decorative board, wherein a plurality of vent holes (21a) are provided in the front wall (21) of the ventilating chamber (20), and the vent hole (21a) is in front of the vent hole (21a). A nose masking decorative board characterized by having a configuration in which a draining piece (13) hanging from the front covering portion (1) is provided.   A shielding plate (3) is suspended from the front covering portion (1) into the ventilation chamber (20), and the ventilation chamber (20) is partitioned into front and rear space portions by the shielding plate (3). The nasal cover according to claim 1, wherein a ventilation path is formed below (3), and a heating foam (B) is installed on the back side of the shielding plate (3) facing the ventilation path. Board.

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