JPH1171871A - Rooftop rain drainage structure, and its water discharge member - Google Patents

Abstract

PROBLEM TO BE SOLVED: To surely drain the rain into an eaves gutter of a lower roof without splashing or scattering by arranging a lower end part of a vertical gutter of an upper roof on the lower roof, and providing a draining member to diffuse the rain. SOLUTION: A lower end part of a vertical gutter 3 of an upper roof 1 is arranged on a lower roof 2, and a draining member 4 to diffuse and drain the rain is provided on the lower roof 2. An eaves gutter 5 to receive the rain flowing on the lower roof 2 is provided on the lower roof 2. The rain on the upper roof 1 flows down in the vertical gutter 3, and is diffused by the draining member 4, and flows down over the lower roof 2, and is dropped in the eaves gutter 5 of the lower roof 2. Thus, the rain is not concentrated at one part of the eaves gutter 5, and surely enters the eaves gutter 5 and drained without splashing or scattering.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a roof rainwater drainage structure and a drainage member thereof, and more particularly to a roof rainwater drainage structure in which rainwater from an upper floor is received by an eaves gutter on a lower floor.

[0002]

2. Description of the Related Art As a conventional roof rainwater drainage structure and its drainage member, there is one as shown in FIG. As shown in this figure, in the roof rainwater drainage structure and the drainage member 4, a cylindrical gutter body called a crawler gutter is provided as the drainage member 4 along the downstairs roof 2. Then, the lower end of the drainage member 4 is bent into a substantially L-shape, and the bent end is dropped into the eaves gutter 5 downstairs, so that the rainwater of the upper roof 1 is joined to the lower floor and drained. . Alternatively, although not shown, the bent distal end of the drainage member 4 may be dropped into the water collector of the downstairs roof 2.

According to such a roof rainwater drainage structure and its drainage member 4, rainwater on the floor is removed from the eaves gutter 5 of the lower roof 2.
Since the rainwater is surely dropped, there is almost no fear that the rainwater hits the eaves gutter 5 of the downstairs roof 2 and bounces out.

[0004]

However, in the above-mentioned conventional example, since the drainage member 4 is provided along the surface of the downstairs roof 2, the drainage member 4 receives the solar heat to meander. Or discolored, easily deteriorated,
There is a problem that the aesthetic appearance is easily deteriorated, and that the maintenance of the construction takes time and effort. In addition, in the case where the drainage member 4 is dropped into the water collector of the downstairs roof 2, the position where the drainage member 4 is provided is further limited, and the construction is restricted.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to reliably receive rainwater on an upper floor roof onto an eaves gutter on a lower floor roof without using a gutter. It is an object of the present invention to provide a roof rainwater drainage structure and a drainage member having a preferable appearance and easy construction maintenance.

[0006]

According to a first aspect of the present invention, there is provided a roof rainwater drainage structure in which a lower end of a downspout 3 of an upper roof 1 is arranged on a lower roof 2 and the downspout 3 is provided with a lower floor. At the lower end, a drainage member 4 for diffusing and draining rainwater on the lower floor roof 2 is provided, and the lower floor roof 2 is provided with an eave gutter 5 for receiving rainwater flowing through the lower floor roof 2. I have.

In such a roof rainwater drainage structure, the rainwater on the upper roof 1 spreads down on the lower roof 2 and falls down, and falls on the eaves 5 of the lower roof 2. 5 will surely enter.

According to a second aspect of the present invention, there is provided a drainage member 4 forming the roof rainwater drainage structure according to the first aspect, wherein the drainage member main body 4a is formed as a substantially sealed container. The structure is characterized in that a downspout connection part 4b of the upper roof 1 is provided at the upper part, and a drainage hole 4c is provided in the front part or the lower part, which spreads in the lateral direction.

As the drainage hole 4a extending in the horizontal direction, a plurality of holes may be provided in parallel in the horizontal direction, or a horizontal slit may be used. In short, it is sufficient if the hole allows the rainwater to spread and drain in the lateral direction.

According to such a drain member 4, the drain hole 4c
Rainwater is drained onto the downstairs roof 2. Since the drain holes 4c are wide in the horizontal direction, they spread down on the downstairs roof 2 and run down. In other words, the eaves gutter 5 falls on the wide area of the eaves gutter 5 of the downstairs roof 2, so that the momentum hitting the eaves gutter 5 is small, and the bounce is unlikely to occur.

According to a third aspect of the present invention, in the second aspect of the invention, the drain hole 4c is formed as a plurality of slits or a plurality of holes arranged in parallel, and the opening area thereof increases as the distance from the downspout connection portion 4b increases. It is characterized by being formed.

According to such a drainage member 4, the amount of rainwater in the drainage member main body 4a decreases as the distance from the downspout connection portion 4b increases, and the pressure for draining the rainwater tends to decrease. However, in this drainage member 4, since the opening area becomes larger as it goes away from the gutter connection portion 4b, the drainage is drained to compensate for the decrease in the pressure for draining the rainwater, and the drainage hole in the portion that goes away from the gutter connection portion 4b. Rainwater drained from 4c is prevented from decreasing.

The invention according to claim 4 is the invention according to claim 2 or 3.
In the invention described in any one of the above, the inspection lid 4d is provided on the upper surface of the drainage member main body 4a.

According to such a drainage member 4, the inspection lid 4d
Can be opened to check for clogging or the like in the drainage member main body 4a and take measures.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS.

FIG. 1 is a perspective view showing a house provided with a roof rainwater drainage structure of this embodiment, and FIG. 2 is a perspective view showing a drainage member 4 constituting the roof rainwater drainage structure.

As shown in these figures, this roof rainwater drainage structure is such that the lower end of the downspout 3 of the upper roof 1 is arranged on the lower downstairs 2, and the lower end of the downspout 3 allows rainwater to flow to the lower roof 2. A drainage member 4 for diffusing and draining water is provided, and an eaves gutter 5 for receiving rainwater flowing through the lower floor roof 2 is provided on the lower floor roof 2 of the same floor. In other words, the rainwater on the upper roof 1 flows down the downspout 3, but is once diffused by the drainage member 4 and
It is drained up.

The drainage member 4 is made of a vinyl chloride resin or the like, and the drainage member main body 4a is formed as a substantially sealed container. In addition to the above, the drainage hole 4c is formed on the front surface or the lower surface so as to extend in the lateral direction.

In this case, the drainage member main body 4a is formed as a horizontally long rectangular parallelepiped container, and a cylindrical connection port serving as a downspout connection section 4b is provided upright at a side end of the upper surface. In addition, the drainage member main body 4a has a plurality of holes arranged in a horizontal direction on a front surface and a lower surface, respectively, and these holes are formed as drainage holes 4c extending in the horizontal direction. Further, the drain holes 4c are arranged side by side with the rectangular holes formed vertically, and the opening area thereof is increased as the distance from the downspout connection portion 4b increases.

Although not shown in the drawing, such a drain hole 4c that spreads in the horizontal direction may be a horizontal slit or the like, in short, rainwater spreads in the horizontal direction and is drained. It is only necessary that the holes have such shapes. Further, the drain hole 4c may be provided only on the front surface or the lower surface.

In the roof rainwater drainage structure configured as described above, the rainwater of the upper roof 1 spreads down on the lower roof 2 and falls down, and falls on the eaves gutter 5 of the lower roof 2. Therefore, since the rainwater does not concentrate on one place of the eaves gutter 5, the rainwater hits the front plate of the eaves gutter 5 and rebounds, so that the rainwater does not jump out and enters the eaves gutter 5 without fail. In other words, when a conventional gutter is provided on a lower floor roof, the gutter is likely to be deformed or discolored by solar heat and deteriorated easily. The rainwater on the upper floor can be reliably received by the eaves on the lower floor without using easy gutters. For this reason, it is possible to escape from the drawback that the crawler trough is deformed, meandering, discolored, or damaged, so that the appearance is preferable and the construction maintenance is easy.

Further, as the distance from the downspout connection portion 4b increases, the amount of rainwater in the drainage member main body 4a is reduced by being drained.
The pressure to drain rainwater tends to decrease. However, in the drainage member 4, since the opening area of the drainage hole 4c increases as the distance from the gutter connection portion 4b increases, the drainage is drained to compensate for the decrease in pressure for draining rainwater, and the drainage hole 4c is drained.
A decrease in drainage from the drainage hole 4c in a portion away from the drainage hole is prevented. In other words, the drainage hole 4c
, The water is surely spread and drained, and the wide drainage state is reliably obtained. Therefore, rainwater can flow into the eaves gutter 5 more reliably without bouncing off.

An inspection lid 4d is provided on the upper surface of the drainage member main body 4a.
The inspection lid 4d can be opened as appropriate to take measures such as checking and removing clogging of the drainage member main body 4a with foreign matter such as fallen leaves.

[0024]

According to the first aspect of the present invention, the rainwater on the upper floor spreads on the lower floor roof by the drainage member and falls down, and falls on the wide part of the eaves gutter of the lower floor roof, so that it bounces out. Without entering the eaves gutter,
Drained.

That is, according to such a roof rainwater drainage structure, it is possible to reliably receive rainwater from an upper floor roof to an eaves gutter of a lower floor roof without providing a conventional gutter on the lower floor roof. For this reason, since it is possible to escape from the drawbacks caused by the meandering or discoloration of the crawler due to damage, the appearance is preferable and the construction maintenance is easy.

According to the second aspect of the present invention, rainwater is drained from the drain hole of the drain member by spreading horizontally on the lower roof. Therefore, it spreads down on the downstairs roof in the horizontal direction, falls down, and falls over a wide area of the eaves gutter of the downstairs roof, so that it is less likely to hit the eaves gutter and to be surely drained into the eaves gutter.

According to the third aspect of the invention, as the distance from the downspout connection increases, the amount of rainwater in the drain member body decreases, and the pressure for draining the rainwater tends to decrease. However, in this drainage member, since the opening area becomes larger as it goes away from the gutter connection portion, the drainage is drained to compensate for the decrease in the pressure for draining rainwater, and the drainage hole in the portion far from the gutter connection portion. The reduction of wastewater is prevented.

Therefore, the drainage from the drainage hole at a position away from the downspout connection is not reduced and the water is surely spread and drained over a wide range, so that a wide drainage state is reliably obtained.

According to the fourth aspect of the present invention, the inspection lid can be opened to easily perform inspection and treatment of clogging or the like in the drainage member main body.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a house provided with a roof rainwater drainage structure according to an embodiment of the present invention.

FIG. 2 is a perspective view showing a drainage member constituting the roof rainwater drainage structure according to the first embodiment.

FIG. 3 is a perspective view showing a conventional example.

[Description of Signs] 1 roof above floor 2 floor below roof 3 Downspout 4 Drainage member 4a Drainage member body 4b Downspout connection 4c Drainage hole 4d Inspection lid 5 Spout gutter

Claims (4)

[Claims] 1. A lower end of a downspout of a downstairs roof is disposed on a downstairs roof, and a drainage member is provided at the lower end of the downspout to diffuse rainwater to the downstairs roof and drains the rainwater. A roof rainwater drainage structure comprising an eave gutter to be received on a lower roof of the same floor. 2. The drainage member main body is formed as a substantially hermetically sealed container, and a downspout connection portion of an upper floor is provided at an upper portion of the drainage member main body, and the drainage member main body has a laterally extending surface at a front surface or a lower surface. The drainage member for forming a roof rainwater drainage structure according to claim 1, wherein a drainage hole is provided. 3. The drainage hole is formed such that the opening area of the drainage hole increases as the distance from the downspout connection part increases.
A drainage member as described. 4. The drainage member according to claim 2, wherein an inspection lid is provided on an upper surface of the drainage member main body.