JPH0720323U - Drainage structure in the foundation of the building - Google Patents

Abstract

(57) [Summary] [Purpose] Even if a flood or the like occurs, or if a leak accident occurs inside the building, it is possible to maintain the building for a long time without causing the pool of water in the foundation. Propose a drainage structure within the foundation of a building that can. [Structure] In a drainage structure inside a foundation of a building in which a drainage passage that connects the inside and outside of the foundation surrounded by the rising of the foundation of the building is formed, a water backflow prevention valve is provided in the drainage passage. To do.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a drainage structure in a building foundation, and more specifically, to a foundation surrounded by rising edges of a building foundation, particularly a foundation of a building in which a drainage passage communicating between the moisture-proof foundation and the outside is formed. It is related to the internal drainage structure.

[0002]

[Prior art]

 Generally, in the foundation structure of a building, a rise 2 of the foundation is formed as shown in FIG. 5, and a drainage passage 4 composed of a drainage pipe is provided for each block 3 in the foundation surrounded by the rise 2. Further, a moisture-proof concrete 5 is laid inside the block 3, and if necessary, bundle stones 6, 6, ... Are provided at predetermined positions. The moisture-proof concrete 5 has a moisture-proof effect on the building, but since it is generally formed so as to be inclined toward the drainage passage 4, rainwater and the like accumulated during the construction of the building can be efficiently discharged to the outside through the drainage passage 4. It is being removed. Further, in the basic structure having such a drainage passage 4, when the building is completed, the drainage passage 4 is closed to prevent inflow of water due to flooding or the like from the outside.

[0003]

[Problems to be solved by the device]

 However, in the conventional drainage structure in the foundation of the building, after the building is completed, the structure prevents water from entering the block 3 due to flooding from the outside. When water is generated due to the reason, the water is not accumulated in the block 3 because there is no drainage route. Such pooling of water under the floor facilitates the formation of mold and the like. For this reason, if the discovery of the accumulated water in the block 3 is delayed, the building may be seriously affected. Therefore, the object of the present invention is to maintain the building satisfactorily for a long time without causing water accumulation in the foundation even if a flood or the like occurs or a water leakage accident occurs inside the building. It is to propose a drainage structure within the foundation of a building that can.

[0004]

[Means for Solving the Problems]

 According to the present invention, in a drainage structure inside a foundation of a building in which a drainage passage that connects the inside and the outside surrounded by the rising of the foundation of the building is formed, a backflow prevention valve for water is provided in the drainage passage. The above objective was achieved by proposing a drainage structure in the foundation of a characteristic building. Also, moisture-proof concrete is laid inside the foundation, and the check valve is attached to the drainage passage from outside of the rise of the foundation and has a buoyancy valve body that moves upward by buoyancy to close the passage. Is.

[0005]

[Action]

 In the present invention, the drainage passage is not blocked even after the building is completed, and instead, a check valve is provided in the drainage passage from outside the foundation rising. Such a check valve consists of a buoyancy valve body that can block the passage for drainage, and such a buoyancy valve body moves up when water overflows due to flooding etc. Has the effect of blocking. Therefore, even if submergence occurs, the water does not flow back through the drainage passage and does not collect in the foundation. On the other hand, even if there is a water leakage accident in the building, the water generated in the foundation will be drained through the drainage passage. Therefore, no accumulated water will occur in the foundation, and mold will not form under the floor or on the floor.

[0006]

【Example】

 Hereinafter, an embodiment of a drainage structure in a building according to the present invention will be described with reference to the drawings. FIG. 1 is a perspective view of a foundation portion provided with a drainage structure in the foundation of the building according to the present embodiment. FIG. 2 is a cross-sectional view of the drainage portion of the drainage structure in the foundation of the building of FIG. FIG. 3 is a sectional view of the check valve of the drainage structure in the foundation of the building of FIG. 1.

As shown in FIGS. 1 to 3, a drainage structure 1 in the foundation of a building of the present embodiment is provided with a drainage passage 4 that connects the inside 3 of the foundation surrounded by the rise 2 of the foundation of the building and the outside. In this respect, it is similar to the conventional drainage structure in the foundation of a building. Thus, the drainage structure 1 in the foundation of the building has the water check valve 10 in the drainage passage 4. In addition, a moisture-proof concrete 5 is laid inside the foundation 3, and the check valve 10 is attached to the drainage passage 4 from outside the rising edge 2 of the foundation and moves upward due to buoyancy to close the passage when flooding occurs. It has a buoyancy valve body 13.

The drainage structure 1 in the foundation of the building of the present embodiment will be further explained. As shown in FIGS. 1 to 3, a moisture-proof concrete 5 is laid in a portion surrounded by the foundation rising 2. Further, as shown in FIG. 2, a drainage passage 4 that connects the inside 3 of the foundation and the outside is formed in a predetermined foundation rise 2. The moisture-proof concrete 5 not only protects the floor of the building formed above from moisture, etc., but also drains rainwater collected in the foundation 3 during construction to the outside through the drainage passage 4. That is, the moisture-proof concrete 5 surface is inclined toward the drainage passage 4. Further, bundle stones 6, 6 ... Are provided on the surface of the moisture-proof concrete 5 in accordance with the large laying.

As shown in FIG. 3, the drainage passage 4 is provided with a drainage pipe 7 made of vinyl chloride or the like. The diameter of the drainage pipe 7 is used in accordance with the diameter of the drainage passage 4, but the diameter is preferably 15 to 20 mm. Used. A check valve 10 is attached to the outer end 7A of the drainage pipe 7 via a relay pipe 8. The check valve 10 includes an elbow pipe 11, a valve seat 12 provided in the elbow pipe 11, a spherical buoyancy valve body 13, and a lattice lid 14 attached to the lower end opening of the elbow pipe 11. The curved end of the elbow pipe 11 is connected to the intermediate pipe 8, and the valve seat 12 forms a vertical movement champer 15 of the buoyancy valve body 13 together with the lattice lid 14. The buoyancy valve body 13 moves up and down in the vertical movement chamber 15 in the direction of the arrow shown in the figure, and closes the opening 12A of the valve seat 12 when positioned above.

In the drainage structure 1 in the foundation of the building configured as described above, the backflow of water such as submersion is prevented from moving upward even after the building is completed without blocking the drainage passage 4. It can be prevented by On the other hand, even if there is a water leakage accident in the building, the water generated in the foundation 3 is promptly drained through the drainage passage 4. For this reason, there is no accumulated water in the foundation 3 and no mold or the like is generated under the floor or on the floor, and damage due to moisture does not occur.

In the above-described embodiment, the buoyancy valve body 13 has a spherical shape, but the shape is not limited to this. It is not limited. Further, the valve body does not have to be freely held in the chamber 15, but one that closes the opening 12A of the valve seat 12 by buoyancy, for example, one end is fixed near the valve seat opening 12A and the free end is flexible. If the valve body structure is flexible and buoyant, the moving chamber or the like is not always necessary.

Next, another embodiment of this embodiment will be described with reference to FIGS. 4 (A) and 4 (B). FIGS. 4 (A) and 4 (B) are cross-sectional views of the check valve of the drainage structure in the foundation of the building according to different embodiments. The structure of the drainage structure in the foundation of the building according to the present embodiment is constructed in substantially the same manner as the embodiment shown in FIG. 1, and the same members as those in the embodiment shown in FIG. Although the detailed description is omitted, unlike the embodiment shown in FIG. 1, the check valve 20A shown in FIG. 4 (A) has a female screw formed on the inner surface of the bent end 11A of the elbow pipe 11. That is, a male screw is formed on the outer surface of the end portion 7A of the drainage pipe 7. Further, in the check valve 20B of FIG. 4 (B), a male screw is formed on the outer surface of the bent end 11A of the elbow pipe 11 and a female screw is formed on the inner surface of the end 7A of the drain pipe 7. is there. Therefore, the check valves 20A and 20B in the drainage structure in the foundation of such a building can be easily attached to the drainage pipe 7 in addition to the same effects as the embodiment of FIG.

[0013]

[Effect of device]

 The drainage structure in the foundation of the building according to the present invention does not cause the accumulation of water in the foundation even in the event of flooding or a leak accident in the building, and the Can be maintained.

[Brief description of drawings]

FIG. 1 is a perspective view of a foundation portion provided with a drainage structure in a foundation of a building according to the present embodiment.

2 is a cross-sectional view of a drainage portion of the drainage structure in the foundation of the building of FIG.

3 is a cross-sectional view of the check valve of the drainage structure in the foundation of the building of FIG.

4A and 4B are cross-sectional views of the check valve of the drainage structure in the foundation of the building in different embodiments.

FIG. 5 is a perspective view of a foundation portion provided with a conventional drainage structure in a foundation of a building.

[Explanation of symbols]

 1 Drainage structure inside the foundation of the building 2 Rise of the foundation 3 Inside the foundation 4 Drainage passage 5 Moisture-proof concrete 6 Slab stone 7 Drain pipe 8 Intermediate pipe 10, 20A, 20B Check valve 11 Elbow pipe 12 Valve seat 13 Buoyant valve body 14 Lattice lid 15 Vertical movement chamber

Claims (2)

[Scope of utility model registration request] 1. In a drainage structure in a foundation of a building in which a drainage passage that connects the inside and the outside surrounded by the rising of the foundation of the building is formed, a backflow prevention valve for water is provided in the drainage passage. Drainage structure in the foundation of the characteristic building. 2. A moisture-proof concrete is laid in the foundation, and the check valve is attached to the drainage passage from the outside of the rising of the foundation, and a buoyancy valve body that moves upward by buoyancy to close the passage is formed. The drainage structure in the foundation of a building according to claim 1, which has.