JPH1096310A - Eaves draining structure for building - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an eaves draining structure which eliminates the need for a universal drain, an elbow, a goose neck, etc., provides an excellent look at the eaves, and can effectively drain rainwater that falls on the roof by use of the principle of the siphon. SOLUTION: An eaves draining structure of a building comprises a gutter 1 having a bottomed water collecting part 2 in its bottom; a leader 3 through which rainwater W flowing into the bottomed water collecting part 2 is drained; a bottomed retaining part 5 placed inside the upper end of the leader 3; and a communicating pipe 6 communicating the bottomed retaining part 5 with the bottomed water collecting part 2 from above. The communicating pipe 6 is filled with water and is disposed with one end 61 leading to the inside of the bottomed water collecting part 2 in which rainwater W is retained and with the other end 62 leading to the bottomed retaining part 5 in which rainwater is retained, so that the rainwater W flowing into the bottomed water collecting part 2 is drained into the bottomed retaining part 5 through the communicating pipe 6 by use of the principle of the siphon.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an eaves drainage structure for a building, and more particularly to an eaves drainage structure in which rainwater collected by a rain gutter is discharged to a downspout using the principle of siphon.

[0002]

2. Description of the Related Art In a conventional eaves drainage structure, as shown in FIG. 8, a vertical gutter 1a is held by a support fitting 2a fixed to an outer wall W of a building, and rainwater falling on a roof R is collected by an eaves gutter 3a. For example, funnel 4a, elbow 5a, call gutter 6a,
It flows into the downspout la through the elbow 7a, and flows down in the downspout 1a.
-190037). By the way, in this case,
There is a problem that the appearance of the eaves is inferior because the elbow and the gutter are visible from the outside.

As an eaves drainage structure that makes the eaves tip look beautiful, an improved eaves drainage structure is described in, for example, Japanese Utility Model Publication No. 4-11053 and Japanese Patent Application Laid-Open No. Hei 2-17658. That is, the actual fairness 4-1
In the drainage structure described in Japanese Patent No. 1053, as shown in FIG. 9, the eaves gutter main body is constituted by a plurality of box-shaped bottomed members 1b, and the box-shaped bottomed members 1b cover connection parts such as a call gutter. It is intended to have a role as a member. 9b is a drain pipe, 10b is a collecting pipe, 1
1b is an elbow, 12b is a downspout, 13b is a mounting plate, 14b
Is a plate-like portion, 15b is a joint, and 110b is a horizontal eave ceiling.

Further, as shown in FIG. 10, the drainage structure described in Japanese Patent Application Laid-Open No. 2-176058 discloses a drainage gutter 3c which communicates between an eaves gutter 1c and a vertical gutter 2c, which is arranged behind a horizontal eaves ceiling 5c. An eaves gutter 1c and a call gutter 3c are connected by a horizontal drain 7c, and a net 4c is provided on the horizontal drain 7c.

[0005]

However, the above-mentioned conventional drainage structure can be applied only when the eaves ceiling is horizontal. That is, it cannot be applied to the case where the back of the eaves has an inclined ceiling. Moreover, in the eaves drainage structure described in Japanese Utility Model Publication No. 4-11053, it is difficult to manufacture a box-shaped bottomed member having a special shape having a mounting plate and a plate-like portion. A pipe connection port must be opened on the rear wall of the box-shaped bottomed member and connected to one end of the drainage pipe, and the other ends of the multiple drainage pipes must be connected to a common collecting pipe. And the construction cost is greatly increased. Also, since there are many connection points, there is a high risk of rainwater leakage from the connection parts,
There is also the problem of poor reliability.

Further, in the drainage structure of the eaves described in Japanese Patent Laid-Open No. 2-176058, the elbow on the eaves gutter side becomes unnecessary by using the conventional free drain as the laterally drawn drain. By arranging the gutter behind the eaves ceiling, the appearance of the eaves is enhanced, but a drainage hole must be formed at a predetermined location at the bottom of the eaves gutter, and it becomes a specially shaped eaves gutter. It is difficult, and the connection between the drain of the eaves gutter and the opening of the horizontal drain must be carefully made. If the connection at this part is poor, there is a great risk of rainwater leaking behind the eaves ceiling.

[0007] The present invention can be applied to the case where the eaves lining is an inclined eaves ceiling parallel to the roof surface.
Buildings that do not require elbows, call gutters, etc., have excellent aesthetic appearance at the eaves, and can effectively drain rainwater from rain gutters to downspouts using the siphon principle. The purpose is to provide an eaves drainage structure.

[0008]

According to a first aspect of the present invention, there is provided a drainage structure for an eaves of a building, wherein the drainage structure receives rainwater collected by a rain gutter, and flows into the bottomed water collection portion. A downpipe for draining rainwater, a bottomed reservoir disposed at an upper end of the downpipe, and a communication pipe communicating from above with the bottomed reservoir and the bottomed water collecting section. The communication pipe is filled with water, and one end of the communication pipe is provided so as to reach a bottomed collecting part where the rainwater is stored, and the other end is provided so as to reach a bottomed collecting part where the rainwater is stored. The rainwater flowing into the bottomed water collecting part is discharged into the bottomed reservoir through a communication pipe according to the siphon principle.

According to a second aspect of the present invention, there is provided a drainage structure for an eaves of a building, wherein the upper end of the bottomed collecting portion is located above the upper end of the bottomed collecting portion and reaches the inside of the bottomed collecting portion. The lower end of the provided communication pipe is located below the upper end of the bottomed reservoir.

According to a third aspect of the present invention, there is provided a drainage structure for an eaves of a building, wherein the top of the communication pipe is formed higher than the bottomed water collecting section and the bottomed pool, and a portion excluding both ends of the communication pipe is a roof. It is arranged inside.

According to a fourth aspect of the present invention, there is provided a drainage structure for an eaves in a building, wherein the bottomed water collecting portion and the bottomed pool are both opened at the upper end, and both upper end openings are covered with a floating body so that the water level of the rainwater can be reduced. Accordingly, the two floating bodies are installed so as to be movable in the vertical direction.

According to a fifth aspect of the present invention, there is provided an eaves drainage structure for a building, wherein a downspout is disposed in the building.

The bottomed water collecting section of the present invention may be of any form, such as a cylindrical body or a tank having a bottomed upper opening, as long as it collects rainwater collected and flowing through a rain gutter. May be. The cross-sectional shape of the cylindrical body and the tank may be any of a circle, a rectangle, an ellipse, and the like. And the bottomed water collecting part may be provided so as to project downward from the bottom of the rain gutter, or may be provided on the side or rear of the rain gutter separately from the rain gutter. In the case of a tank-shaped bottomed water collecting section, an air inlet / outlet may be provided somewhere on the upper wall of the tank. It is preferable that the size (capacity) of the bottomed collecting part is larger than that of the bottomed collecting part described later.

The bottomed reservoir in the present invention is used by being disposed at the upper end of a downspout for draining rainwater, and may be any cylindrical member having a bottom and an open upper part.

The cross-sectional shape of the communicating pipe used in the present invention is not particularly limited as long as it is a tubular body that communicates between the bottomed collecting part and the bottomed collecting part from above. The tubular body may be transparent or opaque, but if it is transparent, the state of water in the communication pipe can be grasped from the outside. The tubular body is a soft hose,
Alternatively, it may be a flexible tube having a smooth inner surface and having an uneven outer surface.

According to the present invention, when rainwater flows into the bottomed collecting part, the water level in the bottomed collecting part becomes higher than the water level in the bottomed collecting part.
Rainwater flows into the bottomed reservoir through the communication pipe according to the siphon principle, and is discharged to the downspout.

According to the second aspect of the present invention, a communication pipe is disposed such that the upper end of the bottomed collecting section is located above the upper end of the bottomed collecting section and reaches the inside of the bottomed collecting section. Is located below the upper end of the bottomed pool,
When the water level in the bottomed collecting section is higher than the upper end of the bottomed collecting section, the rainwater can be continuously discharged to the downspout through the communication pipe. Since the lower end of the communication pipe is always below the water surface, air does not enter and the water sealing of the communication pipe is not broken.

According to the third aspect of the present invention, even if the eaves lining has a sloping ceiling, the communication pipe is not visible from the outside because the portion excluding both ends of the communication pipe is disposed inside the roof. The appearance of the eaves is good.

According to the fourth aspect of the present invention, since both the bottomed water collecting portion and the upper end opening of the bottomed collecting portion are covered by the floating body which is installed so as to be vertically movable, the bottomed collecting portion is provided. Evaporation of rainwater accumulated in the water portion and the bottomed accumulation portion is prevented.

According to the fifth aspect of the present invention, since the downspout is disposed in the building, the appearance of the building including the eaves is further improved.

[0021]

An embodiment of the present invention will be described below with reference to the drawings. 1 is a schematic explanatory view showing one embodiment of the present invention, FIG. 2 is an enlarged longitudinal sectional view showing a main part of FIG. 1, FIG. 3 is a sectional view taken along line XX of FIG. 2, and FIG.
5 is a cross-sectional view taken along the line YY, and FIG. 5 is a cross-sectional view taken along the line ZZ in FIG.

In FIG. 1, reference numeral 1 denotes an inner gutter type rain gutter, which is provided with a predetermined water gradient along an eave-side edge of a roof R of a building. The rain gutter 1 is made of, for example, a steel plate whose surface is coated with a vinyl chloride resin.
Reference numeral 2 denotes a short cylindrical bottomed water collecting portion having an upper opening, which is provided so as to project downward from a bottom portion of the rain gutter 1 on the underwater side. That is, as shown in FIG. 2, the bottomed water collecting portion 2 has an upper end flange portion 21 adhered and fixed to the bottom inner surface 11 of the rain gutter 1. The bottomed water collecting section 2 is made of, for example, a vinyl chloride resin.

Numeral 3 denotes a downspout having a circular cross section disposed in the house, and a socket-like joint 4 is connected to the outer surface of the upper end of the downspout 3 as shown in FIG. Fitting 4
An annular projection 41 is provided on the substantially central inner surface in the longitudinal direction. Reference numeral 5 denotes a short-cylindrical bottomed reservoir having an open upper portion, the outer diameter of which is smaller than the inner diameter of the downspout 3.
The bottomed reservoir 5 is made of, for example, a vinyl chloride resin.

As a result, the inner surface of the downspout 3 and the bottomed pool 5
An annular gap S is formed between the outer surface and the outer surface. As shown in FIG. 4, four support arms 51 are integrally provided on the outer surface of the upper part of the bottomed pool part 5 in four directions. Then, the lower end of the support arm 51 is locked to the upper surface of the annular projection 41 of the joint 4 so that the bottomed pool portion 5 is arranged in the joint 4 and the downspout 3 as shown in FIG. I have. The upper end position of the bottomed pool portion 5 is arranged so as to be located lower than the bottom inner surface 11 of the rain gutter 1, that is, the position of the flange portion 21 of the bottomed water collecting portion 2.

Between the bottomed water collecting section 2 and the bottomed collecting section 5,
The communication is performed by a communication pipe 6. The communication pipe 6 is a transparent pipe made of a vinyl chloride resin, and a portion excluding both ends thereof is disposed inside the eaves substantially parallel to the roof R. That is, the top of the communication pipe 6 is located at a position much higher than the bottomed water collecting section 2 and the bottomed pool 5 as is apparent from FIG. One end 61 of the communication pipe 6 on the rain gutter 1 side is
It is arranged from above so as to reach the inside of the bottomed water collecting section 2 where the rainwater W is stored. Specifically, as shown in FIG. 3, a support member 7 is attached to an outer surface of one end 61 of the communication pipe 6.

The support member 7 includes an annular portion 71 and the annular portion 7.
Four support arms 72 integrally protruded from four sides from the outer surface
It consists of: The inner diameter of the annular portion 71 is substantially equal to the outer diameter of the one end 61. Then, as shown in FIG. 2, one end 61 of the communication pipe 6 is connected to the bottomed water collecting portion 2 by the distal end surface of the support arm 72 abutting on the inner surface of the bottomed water collecting portion 2. It is arranged in. In this case, the lower end position of the one end portion 61 of the communication pipe 6 is disposed below the upper end position of the bottomed reservoir 5.

On the other hand, the other end 62 of the communication pipe 6 on the side of the downspout 3
Are disposed from above so that the rainwater W always reaches the bottomed pool 5 where the rainwater W is stored in a full state. Specifically, as shown in FIG. 5, the support member 8 is mounted on the outer surface of the other end 62 of the communication pipe 6. The supporting member 8 is an annular portion 81
And four support arms 82 integrally projecting in four directions from the outer surface of the annular portion 81. The inner diameter of the annular portion 81 is substantially equal to the outer diameter of the other end 62. The distal end surface of the support arm 82 abuts on the inner surface of the joint 4 and is locked, so that the other end 62 of the communication pipe 6 is disposed in the bottomed reservoir 5 as shown in FIG. Have been.

As described above, the space between the bottomed collecting part 2 and the bottomed collecting part 5 in which the rainwater W is stored is communicated by the communication pipe 6 filled with water. A drainage structure at the eaves is formed.

Next, the drainage action of the eaves drainage structure of the above embodiment will be described. Rain water that has fallen on the roof R is collected by the rain gutter 1, and the rain water flows below the rain gutter 1, and the water level in the bottomed water collecting part 2 rises. With this rise in water level,
There is a difference between the atmospheric pressure acting on the water surface in the bottomed collecting part 2 and the atmospheric pressure acting on the water surface in the bottomed collecting part 5. As a result, the rainwater flowing into the bottomed water collecting section 2 is sucked upward from the opening 61 at one end of the communication pipe 6 by the siphon principle, moves while rising through the communication pipe 6, and moves through the other end of the communication pipe 6. It is discharged into the bottomed reservoir 5 through the opening of the end 62.

Since the bottomed reservoir 5 is always full, the amount of rainwater accumulated in the bottomed reservoir 5 corresponds to the amount of rainwater flowing from the opening at the other end 62 of the communication pipe 6. Then, it overflows from the upper end opening of the bottomed pool part 5 and flows through the inside of the vertical trough 3 through the annular gap S existing between the inner surface of the vertical trough 3 and the outer surface of the bottomed pool part 4. And flows into a drain pipe (not shown) connected to the outside of the building. This draining action is performed during the rain,
It will be performed continuously.

When the rain stops and there is almost no rainwater flowing into the bottomed water collecting part 2, the water level in the bottomed water collecting part 2 falls and the rainwater flowing into the bottomed water collecting part 5 through the communication pipe 6. The amount decreases, and as shown in FIG.
In a state where the water level in the inside becomes equal to the upper end position of the bottomed pool part 5, the movement of rainwater from the bottomed water collecting part 2 side to the bottomed pool part 5 side stops. Then, when it rains again, the same draining action as described above is repeatedly performed.

If rain does not fall for a long time from the state shown in FIG. 6, the rainwater accumulated in the bottomed water collecting section 2 and the bottomed collecting section 5 evaporates, and the sealing of the communication pipe 6 is broken. However, there is a possibility that the principle of the siphon does not work. At this time, since the communication pipe 6 is transparent, it is easy to grasp the state of water in the communication pipe 6.

For this purpose, for example, as shown in FIG.
It is desirable to cover both the upper end openings of the bottomed water collecting section 2 and the bottomed pool section 5 with floating bodies 9 and 10 to prevent evaporation of rainwater. Each of the floating bodies 9 and 10 is a disc-shaped one made of expanded styrene, and holes 9a and 10a slightly larger than the outer diameter of the communication pipe 6 are formed at the center thereof. These holes 9a, 1
The floating bodies 9 and 10 are installed so as to be movable in the vertical direction along the communication pipe 6 by utilizing Oa. In addition, the floating body 10 is installed between the upper end of the bottomed reservoir 5 and the support member.

When rain falls and the rainwater collected by the rain gutter 1 flows downward, the water level of the rainwater around the bottomed water collecting part 2 rises. With the rise of the water level, the floating body 9 rises along the communication pipe 6 due to the buoyancy of the water as shown by a two-dot chain line in FIG. As a result, the upper end opening of the bottomed water collecting section 2 covered by the floating body 9 is opened, and the bottomed water collecting section 2 is opened.
Rainwater flows inside, and the water level inside rises. As the water level rises, the above-mentioned siphon principle works,
Rainwater in the bottomed water collecting part 2 is discharged into the bottomed reservoir 5 through the communication pipe 6. At this time, as shown by a two-dot chain line in FIG. 7, the floating body 10 is lifted by the rising pressure at which the water level in the bottomed pool 5 rises, and the rainwater stored in the bottomed pool 5 is , Overflows from the upper end opening of the bottomed pool portion 5 and is drained through the downspout 3.

When there is no rainwater flowing into the bottomed water collecting part 2, the floating body 9 descends along the communication pipe 6 and returns to the original position, and covers the upper end opening of the bottomed water collecting part 2 again. Will be. On the other hand, as the amount of rainwater flowing into the bottomed pool portion 5 decreases, the rising pressure for lifting the floating body 10 also decreases, and the floating body 10 descends along the communication pipe 6 to return to the original position, and the bottomed pool portion 5 Will again cover the top opening. As a result, evaporation of rainwater in the bottomed water collecting section 2 and the bottomed collecting section 5 can be prevented.

In the above embodiment, the present invention is applied to the inner gutter type rain gutter. However, the present invention can also be applied to the outer gutter type rain gutter attached to the eaves such as a nose shield with a gutter support.

[0037]

According to the present invention as set forth in claims 1 to 5, the communication between the bottomed collecting portion where the rainwater is stored and the bottomed collecting portion where the rainwater is stored is provided in the communication pipe communicating from above. Water is filled, and one end of the communication pipe is disposed so as to reach the bottomed collecting part, and the other end is disposed so as to reach the bottomed collecting part, and rainwater flowing into the bottomed collecting part is formed by the siphon. Since it is configured to be discharged into the bottomed reservoir through the communication pipe in principle, rainwater falling on the roof can be effectively discharged. Therefore, the invention can be effectively applied even when the eaves lining is an inclined ceiling almost parallel to the roof surface. Further, since there is almost no connection between the joint members as in the related art, there is no danger of rainwater leakage.

According to the second aspect of the present invention, a communication pipe is disposed such that the upper end of the bottomed collecting section is located above the upper end of the bottomed collecting section and reaches the inside of the bottomed collecting section. Is located below the upper end of the bottomed pool,
Rainwater can be drained from the bottomed water collecting section to the bottomed pooling section through the communication pipe. And even after the rainwater drains,
Since the lower end of the communication pipe in the bottomed catchment is always below the water surface,
No air enters, and the seal of the communication pipe is not broken.

According to the third aspect of the present invention, the top of the communicating pipe is made higher than the bottomed water collecting section and the bottomed collecting section, and the portion excluding both ends of the communicating pipe is disposed inside the roof. The communication pipe is not visible from the outside, and the eaves have a good appearance.

According to the fourth aspect of the present invention, since both the bottomed water collecting portion and the upper end opening of the bottomed collecting portion are covered by the floating body which is vertically movable, the bottomed collecting portion is provided. Evaporation of rainwater accumulated in the water portion and the bottomed accumulation portion is prevented. For this reason, even if clear weather continues and rain does not fall for a long time, the sealing of the communication pipe is not broken, and drainage of rainwater by the siphon principle is continued again.

According to the fifth aspect of the present invention, since the downspout is disposed in the building, the appearance of the building including the eaves is further improved.

[Brief description of the drawings]

FIG. 1 is a schematic explanatory view showing one embodiment of the present invention.

FIG. 2 is an enlarged vertical sectional view showing a main part of FIG.

FIG. 3 is a sectional view taken along line XX of FIG. 2;

FIG. 4 is a sectional view taken along line YY of FIG. 2;

FIG. 5 is a sectional view taken along line ZZ of FIG. 2;

FIG. 6 is an enlarged vertical sectional view showing a steady state of FIG. 2;

FIG. 7 is an enlarged sectional view showing a main part of another embodiment of the present invention.

FIG. 8 is an explanatory view showing a conventional eaves drainage structure.

FIG. 9 is an explanatory view showing a conventional improved eaves drainage structure.

FIG. 10 is an explanatory view showing another conventional eaves drainage structure improved.

[Explanation of symbols]

 R Roof 1 Rain gutter 11 Bottom inner surface 2 Bottom water collecting part 21 Flange part 3 Vertical gutter 4 Joint 41 Annular projection 5 Bottom reservoir part 51 Support arm S Annular gap 6 Communication pipe 61 One end 62 Other end 7, 8 Supporting members 71, 81 Annular parts 72, 82 Supporting arm W Rainwater 9, 10 Floating body

Claims (5)

[Claims] 1. A bottomed water collecting section into which rainwater collected by a rain gutter flows, a downspout for draining rainwater flowing into the bottomed water collecting section, and an upper end of the downpipe. A bottomed reservoir, and a communication pipe communicating from above with the bottomed pool and the bottomed water collecting part, and the communication pipe is filled with water;
And one end thereof is disposed so as to reach the bottomed collecting part where the rainwater is stored, and the other end is disposed so as to reach the bottomed collecting part where the rainwater is stored, respectively. A drainage structure at the eaves of a building, wherein rainwater that flows in is drained into a bottomed reservoir through a communication pipe according to a siphon principle. 2. A bottomed collecting part, wherein the upper end of the collecting part is located above the upper end of the collecting part, and the lower end of the communication pipe arranged to reach the inside of the collecting part has a lower end of the collecting part. The eaves drainage structure for a building according to claim 1, wherein the drainage structure is located below the upper end. 3. The communication pipe according to claim 1, wherein the top of the communication pipe is higher than the bottomed water collecting section and the bottomed pool, and a portion excluding both ends of the communication pipe is disposed inside the roof. The drainage structure at the eaves of the building described. 4. An upper end of the bottomed water collecting portion and the bottomed pool portion are both opened, and both upper end openings are covered with a floating body, so that the both floating bodies can move up and down in accordance with the water level of rainwater. The drainage structure at the eaves of a building according to any one of claims 1 to 3, which is installed. 5. The downspout is located in the building.
3. The drainage structure at the eaves of the building according to 4.