JP2020122259A - Eaves edge structure - Google Patents

Abstract

To dispense with an eaves edge rafter clearance and to improve ventilation efficiency.SOLUTION: An eaves edge structure 2 has a folded-plate roof 4 provided on an upper part of a building body 3 with an end part on the eaves edge side protruded outward the building body 3, an eaves gutter 7 provided under an end part on the eaves edge side of the folded-plate roof 4 via an eaves arm 5, an eaves decorative cover 8 covering the eaves gutter 7 from outside is mounted to an end part on the eaves edge side of the eaves arm 5 (via metal fittings 41), and an eaves cover 9 provided between an upper end of the eaves decorative cover 8 and the end part on the eaves edge side of the folded-plate roof 4. A water cut-off material 51 is provided between an upper edge part of a rising part 33 of the eaves gutter 7 of a building 1 side and an underside of the folded-plate roof 4, and ventilation parts 52, 53 are provided at a place higher than at least a lower part of the eaves arm 5 of the eaves decorative cover 8.SELECTED DRAWING: Figure 1

Description

The present invention relates to an eaves structure.

BACKGROUND ART There is a building in which a folded roof formed by bending a steel plate in a corrugated shape is installed above the main body of a building so that an end of the folded roof on the eaves side projects to the outside of the main body of the building.

In this building, by installing a mountain-shaped member (matched to the corrugated folded roof) called an eaves-end door between the upper part of the building body and the lower surface of the corrugated folded roof, The door is designed to cut off the water flowing from the edge of the folded roof toward the lower surface of the folded roof or to block wind and rain (for example, see Patent Document 1).

On the other hand, when a flat roof is provided on the upper part of the building main body, by covering the eaves gutter installed on the upper part of the building main body from the outside with a front eaves cover, it is possible to improve the eaves structure (for example, , Patent Document 2).

Utility model registration No. 3209118 JP 2012-47005 A

The eaves structure described in Patent Document 1 has a problem that an eaves front door is required to cut off the transmitted water and block wind and rain.

In addition, the eaves structure of Patent Document 2 has a problem that the ventilation efficiency is not good because the ventilation opening is provided only on the lower side of the eaves decorative cover for ventilation inside the eaves decorative cover. It was

Therefore, the present invention mainly aims to solve the above-mentioned problems.

In order to solve the above-mentioned problems, the present invention provides a folded roof on an upper part of a building main body in a state in which an end on the eaves side projects outward of the building main body, and an end on the eaves side of the folded roof. The eaves trough is installed below the part via the eaves arm, and the eaves side makeup cover that covers the eaves side from the outside is attached to the eaves side end of the eaves arm, and the top end of the eaves side makeup cover and the fold. The eaves structure is provided with an eaves cover between the eaves side end of the plate roof, and a stop is provided between the upper edge of the eaves gutter building side upright and the lower surface of the origami roof. The water material is provided, and the ventilation portion is provided at a position higher than at least the lower surface of the eaves arm of the eaves-edge decorative cover.

According to the present invention, with the above configuration, it is possible to eliminate the front door of the eaves and improve ventilation efficiency.

It is a longitudinal cross-sectional view of the eaves structure of the building according to the present embodiment. It is a longitudinal cross-sectional view of the eaves structure of a building according to a comparative example. FIG. 3 is a component diagram of an eaves-end door used in the eaves-end structure of FIG. Of these, (a) is a front view, (b) is a plan view, and (c) is a side view.

Hereinafter, the present embodiment will be described in detail with reference to the drawings.
1 to 3 are for explaining this embodiment.

<Structure> The structure will be described below.

FIG. 1 is a vertical cross-sectional view showing an eaves tip structure 2 of a building 1 according to the present embodiment.

As an eaves structure 2 of a building 1 such as a detached house or an apartment house, a folding roof 4 is installed on the upper part of the building body 3 with the end of the eaves side protruding outside the building body 3. Then, the eaves gutter 7 is installed via the eave arm 5 below the position of the edge of the origami roof 4 on the eaves side (almost directly below). An eaves tip decorative cover 8 that covers the eaves gutter 7 from the outside is attached to the end of the eaves arm 5 on the eaves side. An eaves cover 9 is provided between the upper end of the eaves cover 8 and the end of the folding roof 4 on the eaves side.

Here, the building 1 may have any structure, but in this embodiment, it is a unit building 11. The unit building 11 is configured so that the building unit 12 having a substantially rectangular parallelepiped shape manufactured in advance in a factory is transported to a building site and assembled at the building site so that the building 1 can be constructed in a short period of time. The building unit 12 includes a steel unit (steel unit) and a wooden unit (wood unit), but in this embodiment, it is made of steel. The steel building unit 12 connects the upper ends of the four pillars in a rectangular shape with four ceiling beams 14, and connects the lower ends of the four pillars in a rectangular shape with four floor beams. It has a unit frame with a box ramen structure.

The building body 3 is composed of a plurality of building units 12. In the figure, the ceiling beam 14 of the building unit 12 on the top floor is shown. An outer wall panel forming an outer wall 21 is attached to the outside of the ceiling beam 14 of the building unit 12 on the top floor. The upper end of the outer wall 21 extends to a position substantially below the ceiling beam 14.

The origami roof 4 is a roof material formed by bending a steel plate into a corrugated shape. The origami roof 4 is installed in a downward slope from the eaves side toward the eaves side. The corrugated uneven portion is formed so as to extend from the eaves side toward the eaves side. The origami roof 4 is attached to the upper part of the ceiling beam 14 of the building unit 12 on the uppermost floor through a fitting such as a tight frame 22 which is fixed in the vertical direction using a fixture 23 such as a drill screw.

The eaves arm 5 is a support member that extends substantially horizontally toward the outside of the building body 3 from a position slightly higher than the upper end portion of the outer wall 21, and is provided in plural at intervals in the direction orthogonal to the paper surface. The eaves arm 5 is laterally fixed to the side surface of the ceiling beam 14 described above by using a fixture 24 such as a bolt or a nut.

At the lower part of the eaves arm 5, a substantially horizontal eave ceiling 25 is installed in a direction orthogonal to the paper surface. The eaves ceiling 25 can be composed of, for example, a heat insulating plate 26 such as a calcareous plate or an eaves ceiling panel 27 such as a vinyl chloride steel plate. The heat insulating plate 26 and the eaves ceiling panel 27 are attached to the lower surface of the eaves arm 5 at both ends in the longitudinal direction of the eaves arm 5 by using a receiving metal fitting 28 or the like.

The eaves gutter 7 is a water collecting member that collects the rainwater X that has fallen on the origami roof 4, and is also a water guiding member that guides the collected rainwater X. The eaves gutter 7 is extended in the direction orthogonal to the paper surface along the eaves-side end of the origami roof 4. The eaves gutter 7 has a substantially U-shaped cross section having a bottom surface 31 and front and rear rising portions 32 and 33 that rise substantially upward from the front and rear edges (the eaves side and the building 1 side) of the bottom surface 31.

The eaves gutter 7 is installed below the position of the eaves-side end of the origami roof 4 and above the middle part of the eaves arm 5 (position near the building 1). The eaves gutter 7 is held and fixed to the upper surface of the eaves arm 5 by using an eaves gutter support 34.

The eaves gutter 7 is installed with a required drainage gradient in the extending direction, and a vertical gutter is connected to the downstream side of the drainage gradient. An overflow gutter 35 is provided on the upstream side of the drainage gradient. The overflow gutter 35 overflows the rainwater X downwardly when the water level of the rainwater X in the eaves gutter 7 becomes a predetermined value or more.

In this embodiment, the overflow gutter 35 is vertically divided into an upper member 36 and a lower member 37. The upper member 36 and the lower member 37 are attached separately.

The upper member 36 is a substantially funnel-shaped member and is attached to the eaves gutter 7 side in a state of vertically penetrating the bottom surface 31 of the eaves gutter 7. The substantially funnel-shaped upper member 36 has an inflow port 36 a above the bottom surface 31 of the eaves gutter 7 and an outflow port 36 b below the bottom surface 31 of the eaves gutter 7. The inflow port 36a is provided at a position lower than the rising portion 33 on the side of the building 1 inside the eaves gutter 7. The outflow port 36b has a tubular shape having a smaller diameter than the upper portion of the upper member 36 provided with the inflow port 36a.

By attaching the upper member 36, the eaves gutter 7 is arranged such that the bottom surface 31 is higher than the upper surface of the eaves arm 5. This can facilitate ventilation through the lower side of the eaves gutter 7.

The lower member 37 serves as a receiver for receiving the rainwater X flowing out from the outlet 36b of the upper member 36, and is attached to the eaves ceiling 25 side. The receiver-shaped lower member 37 has a receiving port 37a on the upper side of the eaves ceiling 25 and an outlet 37b on the lower side of the eaves ceiling 25. The outlet 36b of the upper member 36 is inserted and arranged from the upper side inside the receiving port 37a. The receiving port 37a has a larger diameter than the upper portion of the upper member 36, and the rainwater X from the upper member 36 is collected and discharged from the discharging port 37b by a predetermined amount.

The eaves tip decorative cover 8 is attached to the tip of the eaves arm 5 with an attachment tool 42 such as a screw via an attachment fitting 41. The mounting bracket 41 is mainly composed of a metal plate or the like having a surface parallel to the paper surface. It is extended upward to be higher than that.

The eaves cover 9 is a member that covers the upper part of the eaves gutter 7 from above, and between the eaves top cover 8 and the upper ends of the mounting bracket 41 and the eaves side end of the folding roof 4 or its vicinity. And is attached to the upper surface of the eaves-edge makeup cover 8, the mounting bracket 41, and the folded roof 4 with a mounting tool 43 such as a screw. More specifically, the upper surface of the origami roof 4 is the top surface of the convex portion of the uneven portion of the origami roof 4.

Then, by surrounding the eaves gutter 7 with the eaves cover 9, the eaves vane cover 8, the eaves ceiling 25, etc., a space having a required hermeticity is formed around the eaves gutter 7. Therefore, it is necessary to ventilate this space and the inside of the building 1 connected to this space.

A bent portion 45 that bends substantially downward can be provided at the end of the eaves cover 9 on the folded roof 4 side. The bent portion 45 can have an uneven shape that matches the shape of the uneven portion of the origami roof 4. The bent portion 45 is formed at a position substantially the same as the erecting portion 33 of the eaves gutter 7 on the side of the building 1 or at a position slightly closer to the eaves with respect to the extending direction of the eaves arm 5.

In addition to the basic or overall structure as described above, this embodiment can have the following structure.

(1) A water stop material 51 is provided between the upper edge of the rising portion 33 of the eaves gutter 7 on the side of the building 1 and the lower surface of the origami roof 4. Further, the ventilation parts 52 and 53 are provided at a position higher than at least the lower surface of the eaves arm 5 of the eaves-edge makeup cover 8.

Here, the eaves gutter 7 extends upward so that the eaves-side rising portion 32 is higher than the eaves-side rising portion 33 on the building 1 side and the lower surface of the eaves-side end portion of the folded roof 4. This prevents the rainwater X flowing down the origami roof 4 from crossing the eaves gutter 7, and the rainwater X can be reliably collected in the eaves gutter 7.

Further, the rising portion 33 of the eaves gutter 7 on the side of the building 1 is extended upward toward the lower surface of the origami roof 4 so that the length does not slightly reach the lower surface of the origami roof 4. This makes it possible to provide the water blocking material 51 between the upper edge of the rising portion 33 of the eaves gutter 7 on the side of the building 1 and the lower surface of the folded roof 4.

As the water blocking material 51, a foam material or the like can be used. The waterproofing material 51 is extended in the direction orthogonal to the paper surface along the upper edge of the rising portion 33 of the eaves gutter 7 on the side of the building 1. The lower surface of the water blocking member 51 can be fixed to the upper edge of the rising portion 33 of the eaves gutter 7 on the side of the building 1 with an adhesive or an adhesive. The upper surface of the water blocking member 51 is brought into contact with the lower surface of the folded roof 4. The upper surface of the water blocking member 51 can be fixed to the lower surface of the folded roof 4 with an adhesive or an adhesive. Specifically, the lower surface of the origami roof 4 is the lower surface of the bottom surface of the concave portion of the uneven portion of the origami roof 4.

The eaves makeup cover 8 is divided into a plurality of pieces in the vertical direction. For example, the eaves decorative cover 8 is divided into an upper cover 55, an intermediate cover 56, and a lower cover 57.

Then, by arranging the lower end portion of the upper cover 55 on the upper side of the upper end portion of the intermediate cover 56 with a gap 58 therebetween, the first ventilation part 52 is formed in the gap 58 portion. The first ventilation part 52 can be provided at a position substantially the same as or higher than the upper edge part of the upright part 32 on the eaves side of the eaves gutter 7. The first ventilation part 52 can be formed in a labyrinth shape so that it is difficult for wind and rain to enter. In this embodiment, the lower end portion of the upper cover 55 is bent toward the outside in a downward slope or downward direction, and the upper end portion of the intermediate cover 56 is bent toward the building 1 side in an upward slope, so that the gap 58 is filled with the labyrinth. It has a shape.

Further, by arranging the lower end portion of the intermediate cover 56 on the outer side of the upper end portion of the lower cover 57 so as to have a gap 59, the second ventilation portion 53 is formed in the gap 59 portion. The second ventilation part 53 can be provided at a position between the lower surface and the upper surface of the eaves arm 5. The second ventilation part 53 can be formed in a labyrinth shape so that it is difficult for wind and rain to enter. In this embodiment, the lower end portion of the intermediate cover 56 is bent substantially horizontally toward the building 1 side, and the upper end portion of the lower cover 57 is bent substantially horizontally toward the outside to form the gap 59 in a labyrinth shape. ..

In addition, a third ventilation part 54 may be formed between the lower cover 57 and the end of the eaves ceiling 25 on the eaves side. The third ventilation part 54 is formed at a position lower than the lower surface of the eaves arm 5. The third ventilation section 54 is similar to the existing one.

<Operation> The operation of this embodiment will be described below.

In the eaves structure 2 of the building 1 according to this embodiment, the folding roof 4 is installed on the upper part of the building body 3 with the end of the eaves side protruding outward of the building body 3. The eaves gutter 7 is installed below the end of the eaves side via the eaves arm 5. As a result, the rainwater X that has fallen on the origami roof 4 flows down through the origami roof 4 and is collected in the eaves gutter 7. The rainwater X collected in the eaves gutter 7 is discharged to a sewer or the like through a vertical gutter provided on the downstream side of the eaves gutter 7. Further, when trouble such as clogging of the eaves gutter 7 occurs and more than a predetermined amount of rainwater X is accumulated in the eaves gutter 7, the accumulated rainwater X is drained from the overflow gutter 35 to a position directly below. This prevents the accumulated rainwater X from flowing into the indoor side, and the resident can directly know the trouble of the eaves gutter 7.

Then, a front eaves cover 8 that covers the eaves gutter 7 from the outside is attached to the end of the eaves arm 5 on the eaves side, and the eaves are provided between the upper end of the eaves top cover 8 and the front side of the folding roof 4. A cover 9 is provided. As a result, the eaves gutter 7 can be covered with the eaves decorative cover 8 and the eaves cover 9 so that it cannot be easily seen from the outside. Therefore, the appearance quality of the eaves structure 2 can be improved. Ventilation with respect to the inside of the eaves cover 8 and the eaves cover 9 can be performed by the ventilation parts 52 and 53 provided in the upper part or the middle part of the eaves cover 8.

At this time, in the existing eaves structure 2 as shown in the comparative example of FIG. 2, in the vicinity of the mounting metal fitting called the tight frame 22, as shown in FIGS. (Equipped with a mountain-shaped eaves door 71 according to the shape of the part), the eaves door 71 cuts off the water flowing from the end of the eaves side of the origami roof 4 to the lower side, and blocks wind and rain. However, the cost of the parts and the labor of installation are increased accordingly.

Further, in the comparative example of FIG. 2, since the ventilation part (corresponding to the third ventilation part 54) was provided only in the lower part of the eaves-edge makeup cover 8, the ventilation efficiency was not good.

<Effect> According to this embodiment, the following effects can be obtained.

(Effect 1) In the eaves structure 2, the water stop material 51 is provided between the upper edge of the upright portion 33 of the eaves gutter 7 on the side of the building 1 and the lower surface of the folded roof 4, and the eaves decorative cover 8 is provided. The ventilation parts 52 and 53 may be provided at a position higher than the lower surface of the eaves arm 5.

As a result, the water flowing from the edge of the origami roof 4 toward the rear side of the origami roof 4 is cut by the water stop material 51 at the upper edge of the rising portion 33 of the eaves gutter 7 on the side of the building 1. be able to. Therefore, the eaves front door 71 for draining water can be eliminated.

Further, wind and rain can be blocked by the eaves cover 8 and the eaves cover 9. Ventilation can be performed by one or a plurality of ventilation sections 52, 53 provided at a position higher than the lower surface of the eaves arm 5 of the eaves-edge makeup cover 8 as shown by an arrow Y. Therefore, even if the eaves-side door 71 is omitted, the eaves-side structure 2 can be provided with a drainage function and a function of blocking wind and rain while improving ventilation efficiency.

In addition, the first ventilation part 52 is provided on the upper part of the eaves cover 8 and the second ventilation part 53 is provided on the middle part of the eaves cover 8 to provide ventilation at least at two positions, the upper part and the middle part. Ventilation efficiency can be further improved by making it perform. In this embodiment, the air that has entered from the upper first ventilation part 52 passes through the lower side of the eaves gutter 7 and from the rear side of the eaves gutter 7 (the rear side of the rising portion 33 on the side of the building 1) to the building main body 3. Is passed inside. Similarly, the air that has entered the second ventilation section 53 in the middle portion passes through the lower side of the eaves gutter 7 and from the rear side of the eaves gutter 7 (the back side of the rising portion 33 on the side of the building 1) of the building body 3. Threaded inside.

2 eaves structure 3 building body 4 folded roof 5 eaves arm 7 eaves gutter 8 eaves make-up cover 9 eaves cover 33 rising part 51 water stop material 52 ventilation part 53 ventilation part

Claims (1)

On the upper part of the building body, a folding roof is installed with the end on the eaves side protruding outward of the building body, and below the end on the eaves side of the folding roof, the eaves gutter is provided via an eave arm. Is installed, at the eaves side end of the eaves arm, an eaves side decorative cover that covers the eaves gutter from the outside is attached, and between the upper end of the eaves side decorative cover and the eaves side end of the folding roof. It is an eaves structure with an eaves cover,
A water-stopping material is provided between the upper edge of the eaves on the building side of the eaves and the lower surface of the folding roof, and at a position higher than at least the lower part of the eaves arm of the eaves decorative cover. The eaves structure is characterized by having a ventilation section.